From 00b9de9c249f51f09c19aa41cbbb3e3eb4eea807 Mon Sep 17 00:00:00 2001 From: Paul Mundt Date: Wed, 24 Jun 2009 17:53:33 +0900 Subject: serial: sh-sci: Move SCSCR_INIT in to platform data. This moves all of the SCSCR_INIT definitions in to the platform data, for future consolidation. Signed-off-by: Paul Mundt --- include/linux/serial_sci.h | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'include/linux') diff --git a/include/linux/serial_sci.h b/include/linux/serial_sci.h index 1c297ddc9d5a..f722a2275add 100644 --- a/include/linux/serial_sci.h +++ b/include/linux/serial_sci.h @@ -7,6 +7,15 @@ * Generic header for SuperH SCI(F) (used by sh/sh64/h8300 and related parts) */ +#define SCSCR_TIE (1 << 7) +#define SCSCR_RIE (1 << 6) +#define SCSCR_TE (1 << 5) +#define SCSCR_RE (1 << 4) +#define SCSCR_REIE (1 << 3) +#define SCSCR_TOIE (1 << 2) /* not supported by all parts */ +#define SCSCR_CKE1 (1 << 1) +#define SCSCR_CKE0 (1 << 0) + /* Offsets into the sci_port->irqs array */ enum { SCIx_ERI_IRQ, @@ -26,6 +35,8 @@ struct plat_sci_port { unsigned int type; /* SCI / SCIF / IRDA */ upf_t flags; /* UPF_* flags */ char *clk; /* clock string */ + + unsigned int scscr; /* SCSCR initialization */ }; #endif /* __LINUX_SERIAL_SCI_H */ -- cgit v1.2.3 From 26c92f3728d738aaa7e4859d5581323cd68096dd Mon Sep 17 00:00:00 2001 From: Paul Mundt Date: Wed, 24 Jun 2009 18:23:52 +0900 Subject: serial: sh-sci: Move SCBRR calculation algo in to platform data. This permits each port to select its own SCBRR calculation algorithm, rather than having it all ifdef'ed in the header. There are presently only 5 different variations that all parts fall under. Signed-off-by: Paul Mundt --- include/linux/serial_sci.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include/linux') diff --git a/include/linux/serial_sci.h b/include/linux/serial_sci.h index f722a2275add..ff856b5bd276 100644 --- a/include/linux/serial_sci.h +++ b/include/linux/serial_sci.h @@ -7,6 +7,14 @@ * Generic header for SuperH SCI(F) (used by sh/sh64/h8300 and related parts) */ +enum { + SCBRR_ALGO_1, /* ((clk + 16 * bps) / (16 * bps) - 1) */ + SCBRR_ALGO_2, /* ((clk + 16 * bps) / (32 * bps) - 1) */ + SCBRR_ALGO_3, /* (((clk * 2) + 16 * bps) / (16 * bps) - 1) */ + SCBRR_ALGO_4, /* (((clk * 2) + 16 * bps) / (32 * bps) - 1) */ + SCBRR_ALGO_5, /* (((clk * 1000 / 32) / bps) - 1) */ +}; + #define SCSCR_TIE (1 << 7) #define SCSCR_RIE (1 << 6) #define SCSCR_TE (1 << 5) @@ -36,6 +44,7 @@ struct plat_sci_port { upf_t flags; /* UPF_* flags */ char *clk; /* clock string */ + unsigned int scbrr_algo_id; /* SCBRR calculation algo */ unsigned int scscr; /* SCSCR initialization */ }; -- cgit v1.2.3 From d0959024d8fb6555ba8bfdc6624cc7b7c2e675fd Mon Sep 17 00:00:00 2001 From: Richard Kennedy Date: Wed, 20 Oct 2010 15:57:30 -0700 Subject: timer_list: Remove alignment padding on 64 bit when CONFIG_TIMER_STATS Reorder struct timer_list to remove 8 bytes of alignment padding on 64 bit builds when CONFIG_TIMER_STATS is selected. timer_list is widely used across the kernel so many structures will benefit and shrink in size. For example, with my config on x86_64 per_cpu_dm_data shrinks from 136 to 128 bytes and ahci_port_priv shrinks from 1032 to 968 bytes. Signed-off-by: Richard Kennedy Cc: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Thomas Gleixner --- include/linux/timer.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/timer.h b/include/linux/timer.h index 38cf093ef62c..f3dccdb44f95 100644 --- a/include/linux/timer.h +++ b/include/linux/timer.h @@ -24,9 +24,9 @@ struct timer_list { int slack; #ifdef CONFIG_TIMER_STATS + int start_pid; void *start_site; char start_comm[16]; - int start_pid; #endif #ifdef CONFIG_LOCKDEP struct lockdep_map lockdep_map; -- cgit v1.2.3 From aaabe31c25a439b92cc281b14ca18b85bae7e7a6 Mon Sep 17 00:00:00 2001 From: Changli Gao Date: Wed, 20 Oct 2010 15:57:30 -0700 Subject: timer: Initialize the field slack of timer_list TIMER_INITIALIZER() should initialize the field slack of timer_list as __init_timer() does. Signed-off-by: Changli Gao Cc: Arjan van de Ven Signed-off-by: Andrew Morton Signed-off-by: Thomas Gleixner --- include/linux/timer.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/timer.h b/include/linux/timer.h index f3dccdb44f95..1794674c1a52 100644 --- a/include/linux/timer.h +++ b/include/linux/timer.h @@ -54,6 +54,7 @@ extern struct tvec_base boot_tvec_bases; .expires = (_expires), \ .data = (_data), \ .base = &boot_tvec_bases, \ + .slack = -1, \ __TIMER_LOCKDEP_MAP_INITIALIZER( \ __FILE__ ":" __stringify(__LINE__)) \ } -- cgit v1.2.3 From dd6414b50fa2b1cd247a8aa8f8bd42414b7453e1 Mon Sep 17 00:00:00 2001 From: Phil Carmody Date: Wed, 20 Oct 2010 15:57:33 -0700 Subject: timer: Permit statically-declared work with deferrable timers Currently, you have to just define a delayed_work uninitialised, and then initialise it before first use. That's a tad clumsy. At risk of playing mind-games with the compiler, fooling it into doing pointer arithmetic with compile-time-constants, this lets clients properly initialise delayed work with deferrable timers statically. This patch was inspired by the issues which lead Artem Bityutskiy to commit 8eab945c5616fc984 ("sunrpc: make the cache cleaner workqueue deferrable"). Signed-off-by: Phil Carmody Acked-by: Artem Bityutskiy Cc: Arjan van de Ven Signed-off-by: Andrew Morton Signed-off-by: Thomas Gleixner --- include/linux/timer.h | 25 +++++++++++++++++++++++++ include/linux/workqueue.h | 8 ++++++++ 2 files changed, 33 insertions(+) (limited to 'include/linux') diff --git a/include/linux/timer.h b/include/linux/timer.h index 1794674c1a52..cbfb7a355d30 100644 --- a/include/linux/timer.h +++ b/include/linux/timer.h @@ -48,6 +48,18 @@ extern struct tvec_base boot_tvec_bases; #define __TIMER_LOCKDEP_MAP_INITIALIZER(_kn) #endif +/* + * Note that all tvec_bases are 2 byte aligned and lower bit of + * base in timer_list is guaranteed to be zero. Use the LSB to + * indicate whether the timer is deferrable. + * + * A deferrable timer will work normally when the system is busy, but + * will not cause a CPU to come out of idle just to service it; instead, + * the timer will be serviced when the CPU eventually wakes up with a + * subsequent non-deferrable timer. + */ +#define TBASE_DEFERRABLE_FLAG (0x1) + #define TIMER_INITIALIZER(_function, _expires, _data) { \ .entry = { .prev = TIMER_ENTRY_STATIC }, \ .function = (_function), \ @@ -59,6 +71,19 @@ extern struct tvec_base boot_tvec_bases; __FILE__ ":" __stringify(__LINE__)) \ } +#define TBASE_MAKE_DEFERRED(ptr) ((struct tvec_base *) \ + ((unsigned char *)(ptr) + TBASE_DEFERRABLE_FLAG)) + +#define TIMER_DEFERRED_INITIALIZER(_function, _expires, _data) {\ + .entry = { .prev = TIMER_ENTRY_STATIC }, \ + .function = (_function), \ + .expires = (_expires), \ + .data = (_data), \ + .base = TBASE_MAKE_DEFERRED(&boot_tvec_bases), \ + __TIMER_LOCKDEP_MAP_INITIALIZER( \ + __FILE__ ":" __stringify(__LINE__)) \ + } + #define DEFINE_TIMER(_name, _function, _expires, _data) \ struct timer_list _name = \ TIMER_INITIALIZER(_function, _expires, _data) diff --git a/include/linux/workqueue.h b/include/linux/workqueue.h index f11100f96482..88238c15ec3e 100644 --- a/include/linux/workqueue.h +++ b/include/linux/workqueue.h @@ -127,12 +127,20 @@ struct execute_work { .timer = TIMER_INITIALIZER(NULL, 0, 0), \ } +#define __DEFERRED_WORK_INITIALIZER(n, f) { \ + .work = __WORK_INITIALIZER((n).work, (f)), \ + .timer = TIMER_DEFERRED_INITIALIZER(NULL, 0, 0), \ + } + #define DECLARE_WORK(n, f) \ struct work_struct n = __WORK_INITIALIZER(n, f) #define DECLARE_DELAYED_WORK(n, f) \ struct delayed_work n = __DELAYED_WORK_INITIALIZER(n, f) +#define DECLARE_DEFERRED_WORK(n, f) \ + struct delayed_work n = __DEFERRED_WORK_INITIALIZER(n, f) + /* * initialize a work item's function pointer */ -- cgit v1.2.3 From 6f1bc451e6a79470b122a37ee1fc6bbca450f444 Mon Sep 17 00:00:00 2001 From: Yong Zhang Date: Wed, 20 Oct 2010 15:57:31 -0700 Subject: timer: Make try_to_del_timer_sync() the same on SMP and UP On UP try_to_del_timer_sync() is mapped to del_timer() which does not take the running timer callback into account, so it has different semantics. Remove the SMP dependency of try_to_del_timer_sync() by using base->running_timer in the UP case as well. [ tglx: Removed set_running_timer() inline and tweaked the changelog ] Signed-off-by: Yong Zhang Cc: Ingo Molnar Cc: Peter Zijlstra Acked-by: Oleg Nesterov Signed-off-by: Andrew Morton Signed-off-by: Thomas Gleixner --- include/linux/timer.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/timer.h b/include/linux/timer.h index cbfb7a355d30..6abd9138beda 100644 --- a/include/linux/timer.h +++ b/include/linux/timer.h @@ -274,11 +274,11 @@ static inline void timer_stats_timer_clear_start_info(struct timer_list *timer) extern void add_timer(struct timer_list *timer); +extern int try_to_del_timer_sync(struct timer_list *timer); + #ifdef CONFIG_SMP - extern int try_to_del_timer_sync(struct timer_list *timer); extern int del_timer_sync(struct timer_list *timer); #else -# define try_to_del_timer_sync(t) del_timer(t) # define del_timer_sync(t) del_timer(t) #endif -- cgit v1.2.3 From fe7de49f9d4e53f24ec9ef762a503f70b562341c Mon Sep 17 00:00:00 2001 From: KOSAKI Motohiro Date: Wed, 20 Oct 2010 16:01:12 -0700 Subject: sched: Make sched_param argument static in sched_setscheduler() callers Andrew Morton pointed out almost all sched_setscheduler() callers are using fixed parameters and can be converted to static. It reduces runtime memory use a little. Signed-off-by: KOSAKI Motohiro Reported-by: Andrew Morton Acked-by: James Morris Cc: Ingo Molnar Cc: Steven Rostedt Signed-off-by: Andrew Morton Signed-off-by: Thomas Gleixner Signed-off-by: Ingo Molnar --- include/linux/sched.h | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index 0383601a927c..849c8670583d 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1942,9 +1942,10 @@ extern int task_nice(const struct task_struct *p); extern int can_nice(const struct task_struct *p, const int nice); extern int task_curr(const struct task_struct *p); extern int idle_cpu(int cpu); -extern int sched_setscheduler(struct task_struct *, int, struct sched_param *); +extern int sched_setscheduler(struct task_struct *, int, + const struct sched_param *); extern int sched_setscheduler_nocheck(struct task_struct *, int, - struct sched_param *); + const struct sched_param *); extern struct task_struct *idle_task(int cpu); extern struct task_struct *curr_task(int cpu); extern void set_curr_task(int cpu, struct task_struct *p); -- cgit v1.2.3 From 4b6ba8aacbb3185703b797286547d0f8f3859b02 Mon Sep 17 00:00:00 2001 From: David Daney Date: Tue, 26 Oct 2010 15:07:13 -0700 Subject: of/net: Move of_get_mac_address() to a common source file. There are two identical implementations of of_get_mac_address(), one each in arch/powerpc/kernel/prom_parse.c and arch/microblaze/kernel/prom_parse.c. Move this function to a new common file of_net.{c,h} and adjust all the callers to include the new header. Signed-off-by: David Daney [grant.likely@secretlab.ca: protect header with #ifdef] Signed-off-by: Grant Likely --- include/linux/of_net.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) create mode 100644 include/linux/of_net.h (limited to 'include/linux') diff --git a/include/linux/of_net.h b/include/linux/of_net.h new file mode 100644 index 000000000000..e913081fb52a --- /dev/null +++ b/include/linux/of_net.h @@ -0,0 +1,15 @@ +/* + * OF helpers for network devices. + * + * This file is released under the GPLv2 + */ + +#ifndef __LINUX_OF_NET_H +#define __LINUX_OF_NET_H + +#ifdef CONFIG_OF_NET +#include +extern const void *of_get_mac_address(struct device_node *np); +#endif + +#endif /* __LINUX_OF_NET_H */ -- cgit v1.2.3 From b595076a180a56d1bb170e6eceda6eb9d76f4cd3 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Mon, 1 Nov 2010 15:38:34 -0400 Subject: tree-wide: fix comment/printk typos MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit "gadget", "through", "command", "maintain", "maintain", "controller", "address", "between", "initiali[zs]e", "instead", "function", "select", "already", "equal", "access", "management", "hierarchy", "registration", "interest", "relative", "memory", "offset", "already", Signed-off-by: Uwe Kleine-König Signed-off-by: Jiri Kosina --- include/linux/cgroup.h | 2 +- include/linux/firewire-cdev.h | 2 +- include/linux/mfd/core.h | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h index ed4ba111bc8d..ce104e33cd22 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -564,7 +564,7 @@ struct cgroup_iter { /* * To iterate across the tasks in a cgroup: * - * 1) call cgroup_iter_start to intialize an iterator + * 1) call cgroup_iter_start to initialize an iterator * * 2) call cgroup_iter_next() to retrieve member tasks until it * returns NULL or until you want to end the iteration diff --git a/include/linux/firewire-cdev.h b/include/linux/firewire-cdev.h index 68c642d8843d..59ea406be7f6 100644 --- a/include/linux/firewire-cdev.h +++ b/include/linux/firewire-cdev.h @@ -273,7 +273,7 @@ struct fw_cdev_event_iso_interrupt { * @closure: See &fw_cdev_event_common; * set by %FW_CDEV_CREATE_ISO_CONTEXT ioctl * @type: %FW_CDEV_EVENT_ISO_INTERRUPT_MULTICHANNEL - * @completed: Offset into the receive buffer; data before this offest is valid + * @completed: Offset into the receive buffer; data before this offset is valid * * This event is sent in multichannel contexts (context type * %FW_CDEV_ISO_CONTEXT_RECEIVE_MULTICHANNEL) for &fw_cdev_iso_packet buffer diff --git a/include/linux/mfd/core.h b/include/linux/mfd/core.h index cb93d80aa642..5582ab3d3e48 100644 --- a/include/linux/mfd/core.h +++ b/include/linux/mfd/core.h @@ -39,7 +39,7 @@ struct mfd_cell { size_t data_size; /* - * This resources can be specified relatievly to the parent device. + * This resources can be specified relatively to the parent device. * For accessing device you should use resources from device */ int num_resources; -- cgit v1.2.3 From 4a92379bdfb48680a5e6775dd53a586df7b6b0b1 Mon Sep 17 00:00:00 2001 From: Richard Kennedy Date: Thu, 21 Oct 2010 10:29:19 +0100 Subject: slub tracing: move trace calls out of always inlined functions to reduce kernel code size Having the trace calls defined in the always inlined kmalloc functions in include/linux/slub_def.h causes a lot of code duplication as the trace functions get instantiated for each kamalloc call site. This can simply be removed by pushing the trace calls down into the functions in slub.c. On my x86_64 built this patch shrinks the code size of the kernel by approx 36K and also shrinks the code size of many modules -- too many to list here ;) size vmlinux (2.6.36) reports text data bss dec hex filename 5410611 743172 828928 6982711 6a8c37 vmlinux 5373738 744244 828928 6946910 6a005e vmlinux + patch The resulting kernel has had some testing & kmalloc trace still seems to work. This patch - moves trace_kmalloc out of the inlined kmalloc() and pushes it down into kmem_cache_alloc_trace() so this it only get instantiated once. - rename kmem_cache_alloc_notrace() to kmem_cache_alloc_trace() to indicate that now is does have tracing. (maybe this would better being called something like kmalloc_kmem_cache ?) - adds a new function kmalloc_order() to handle allocation and tracing of large allocations of page order. - removes tracing from the inlined kmalloc_large() replacing them with a call to kmalloc_order(); - move tracing out of inlined kmalloc_node() and pushing it down into kmem_cache_alloc_node_trace - rename kmem_cache_alloc_node_notrace() to kmem_cache_alloc_node_trace() - removes the include of trace/events/kmem.h from slub_def.h. v2 - keep kmalloc_order_trace inline when !CONFIG_TRACE Signed-off-by: Richard Kennedy Signed-off-by: Pekka Enberg --- include/linux/slub_def.h | 55 +++++++++++++++++++++++------------------------- 1 file changed, 26 insertions(+), 29 deletions(-) (limited to 'include/linux') diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h index e4f5ed180b9b..8b6e8ae5d5ca 100644 --- a/include/linux/slub_def.h +++ b/include/linux/slub_def.h @@ -10,9 +10,8 @@ #include #include #include -#include -#include +#include enum stat_item { ALLOC_FASTPATH, /* Allocation from cpu slab */ @@ -216,31 +215,40 @@ static __always_inline struct kmem_cache *kmalloc_slab(size_t size) void *kmem_cache_alloc(struct kmem_cache *, gfp_t); void *__kmalloc(size_t size, gfp_t flags); +static __always_inline void * +kmalloc_order(size_t size, gfp_t flags, unsigned int order) +{ + void *ret = (void *) __get_free_pages(flags | __GFP_COMP, order); + kmemleak_alloc(ret, size, 1, flags); + return ret; +} + #ifdef CONFIG_TRACING -extern void *kmem_cache_alloc_notrace(struct kmem_cache *s, gfp_t gfpflags); +extern void * +kmem_cache_alloc_trace(struct kmem_cache *s, gfp_t gfpflags, size_t size); +extern void *kmalloc_order_trace(size_t size, gfp_t flags, unsigned int order); #else static __always_inline void * -kmem_cache_alloc_notrace(struct kmem_cache *s, gfp_t gfpflags) +kmem_cache_alloc_trace(struct kmem_cache *s, gfp_t gfpflags, size_t size) { return kmem_cache_alloc(s, gfpflags); } + +static __always_inline void * +kmalloc_order_trace(size_t size, gfp_t flags, unsigned int order) +{ + return kmalloc_order(size, flags, order); +} #endif static __always_inline void *kmalloc_large(size_t size, gfp_t flags) { unsigned int order = get_order(size); - void *ret = (void *) __get_free_pages(flags | __GFP_COMP, order); - - kmemleak_alloc(ret, size, 1, flags); - trace_kmalloc(_THIS_IP_, ret, size, PAGE_SIZE << order, flags); - - return ret; + return kmalloc_order_trace(size, flags, order); } static __always_inline void *kmalloc(size_t size, gfp_t flags) { - void *ret; - if (__builtin_constant_p(size)) { if (size > SLUB_MAX_SIZE) return kmalloc_large(size, flags); @@ -251,11 +259,7 @@ static __always_inline void *kmalloc(size_t size, gfp_t flags) if (!s) return ZERO_SIZE_PTR; - ret = kmem_cache_alloc_notrace(s, flags); - - trace_kmalloc(_THIS_IP_, ret, size, s->size, flags); - - return ret; + return kmem_cache_alloc_trace(s, flags, size); } } return __kmalloc(size, flags); @@ -266,14 +270,14 @@ void *__kmalloc_node(size_t size, gfp_t flags, int node); void *kmem_cache_alloc_node(struct kmem_cache *, gfp_t flags, int node); #ifdef CONFIG_TRACING -extern void *kmem_cache_alloc_node_notrace(struct kmem_cache *s, +extern void *kmem_cache_alloc_node_trace(struct kmem_cache *s, gfp_t gfpflags, - int node); + int node, size_t size); #else static __always_inline void * -kmem_cache_alloc_node_notrace(struct kmem_cache *s, +kmem_cache_alloc_node_trace(struct kmem_cache *s, gfp_t gfpflags, - int node) + int node, size_t size) { return kmem_cache_alloc_node(s, gfpflags, node); } @@ -281,8 +285,6 @@ kmem_cache_alloc_node_notrace(struct kmem_cache *s, static __always_inline void *kmalloc_node(size_t size, gfp_t flags, int node) { - void *ret; - if (__builtin_constant_p(size) && size <= SLUB_MAX_SIZE && !(flags & SLUB_DMA)) { struct kmem_cache *s = kmalloc_slab(size); @@ -290,12 +292,7 @@ static __always_inline void *kmalloc_node(size_t size, gfp_t flags, int node) if (!s) return ZERO_SIZE_PTR; - ret = kmem_cache_alloc_node_notrace(s, flags, node); - - trace_kmalloc_node(_THIS_IP_, ret, - size, s->size, flags, node); - - return ret; + return kmem_cache_alloc_node_trace(s, flags, node, size); } return __kmalloc_node(size, flags, node); } -- cgit v1.2.3 From fc766e4c4965915ab52a1d1fa3c7a7b3e7bc07f0 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Fri, 29 Oct 2010 03:09:24 +0000 Subject: decnet: RCU conversion and get rid of dev_base_lock While tracking dev_base_lock users, I found decnet used it in dnet_select_source(), but for a wrong purpose: Writers only hold RTNL, not dev_base_lock, so readers must use RCU if they cannot use RTNL. Adds an rcu_head in struct dn_ifaddr and handle proper RCU management. Adds __rcu annotation in dn_route as well. Signed-off-by: Eric Dumazet Acked-by: Steven Whitehouse Signed-off-by: David S. Miller --- include/linux/netdevice.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index d8fd2c23a1b9..578debb801f4 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -951,7 +951,7 @@ struct net_device { #endif void *atalk_ptr; /* AppleTalk link */ struct in_device __rcu *ip_ptr; /* IPv4 specific data */ - void *dn_ptr; /* DECnet specific data */ + struct dn_dev __rcu *dn_ptr; /* DECnet specific data */ struct inet6_dev __rcu *ip6_ptr; /* IPv6 specific data */ void *ec_ptr; /* Econet specific data */ void *ax25_ptr; /* AX.25 specific data */ -- cgit v1.2.3 From 1da4b1c6a4dfb5a13d7147a27c1ac53fed09befd Mon Sep 17 00:00:00 2001 From: Feng Tang Date: Tue, 9 Nov 2010 11:22:58 +0000 Subject: x86/mrst: Add SFI platform device parsing code MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit SFI provides a series of tables. These describe the platform devices present including SPI and I²C devices, as well as various sensors, keypads and other glue as well as interfaces provided via the SCU IPC mechanism (intel_scu_ipc.c) This patch is a merge of the core elements and relevant fixes from the Intel development code by Feng, Alek, myself into a single coherent patch for upstream submission. It provides the needed infrastructure to register I2C, SPI and platform devices described by the tables, as well as handlers for some of the hardware already supported in kernel. The 0.8 firmware also provides GPIO tables. Devices are created at boot time or if they are SCU dependant at the point an SCU is discovered. The existing Linux device mechanisms will then handle the device binding. At an abstract level this is an SFI to Linux device translator. Device/platform specific setup/glue is in this file. This is done so that the drivers for the generic I²C and SPI bus devices remain cross platform as they should. (Updated from RFC version to correct the emc1403 name used by the firmware and a wrongly used #define) Signed-off-by: Alek Du LKML-Reference: <20101109112158.20013.6158.stgit@localhost.localdomain> [Clean ups, removal of 0.7 support] Signed-off-by: Feng Tang [Clean ups] Signed-off-by: Alan Cox Signed-off-by: Thomas Gleixner --- include/linux/sfi.h | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/sfi.h b/include/linux/sfi.h index 7f770c638e99..fe817918b30e 100644 --- a/include/linux/sfi.h +++ b/include/linux/sfi.h @@ -77,6 +77,8 @@ #define SFI_OEM_ID_SIZE 6 #define SFI_OEM_TABLE_ID_SIZE 8 +#define SFI_NAME_LEN 16 + #define SFI_SYST_SEARCH_BEGIN 0x000E0000 #define SFI_SYST_SEARCH_END 0x000FFFFF @@ -156,13 +158,13 @@ struct sfi_device_table_entry { u16 addr; u8 irq; u32 max_freq; - char name[16]; + char name[SFI_NAME_LEN]; } __packed; struct sfi_gpio_table_entry { - char controller_name[16]; + char controller_name[SFI_NAME_LEN]; u16 pin_no; - char pin_name[16]; + char pin_name[SFI_NAME_LEN]; } __packed; typedef int (*sfi_table_handler) (struct sfi_table_header *table); -- cgit v1.2.3 From 751305d9b2fd3e03eaab7808e976241d85ca4353 Mon Sep 17 00:00:00 2001 From: Daniel Drake Date: Thu, 28 Oct 2010 18:23:01 +0100 Subject: viafb: General power management infrastructure Multiple devices need S/R hooks (framebuffer, GPIO, camera). Add infrastructure and convert existing framebuffer code to the new model. This patch should create no functional change. Based on earlier work by Jonathan Corbet. Signed-off-by: Daniel Drake Acked-by: Jonathan Corbet Signed-off-by: Florian Tobias Schandinat --- include/linux/via-core.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'include/linux') diff --git a/include/linux/via-core.h b/include/linux/via-core.h index 7ffb521e1a7a..a4327a0c8efc 100644 --- a/include/linux/via-core.h +++ b/include/linux/via-core.h @@ -59,6 +59,21 @@ struct via_port_cfg { u8 ioport_index; }; +/* + * Allow subdevs to register suspend/resume hooks. + */ +#ifdef CONFIG_PM +struct viafb_pm_hooks { + struct list_head list; + int (*suspend)(void *private); + int (*resume)(void *private); + void *private; +}; + +void viafb_pm_register(struct viafb_pm_hooks *hooks); +void viafb_pm_unregister(struct viafb_pm_hooks *hooks); +#endif /* CONFIG_PM */ + /* * This is the global viafb "device" containing stuff needed by * all subdevs. -- cgit v1.2.3 From 4d17aeb1c5b2375769446d13012a98e6d265ec13 Mon Sep 17 00:00:00 2001 From: Paul Walmsley Date: Tue, 21 Sep 2010 19:37:15 +0530 Subject: OMAP: I2C: split device registration and convert OMAP2+ to omap_device Split the OMAP1 and OMAP2+ platform_device build and register code. Convert the OMAP2+ variant to use omap_device. This patch was developed in collaboration with Rajendra Nayak . Signed-off-by: Paul Walmsley Signed-off-by: Rajendra Nayak Cc: Kevin Hilman Signed-off-by: Kevin Hilman --- include/linux/i2c-omap.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/i2c-omap.h b/include/linux/i2c-omap.h index 78ebf507ce56..7472449cbb74 100644 --- a/include/linux/i2c-omap.h +++ b/include/linux/i2c-omap.h @@ -1,9 +1,14 @@ #ifndef __I2C_OMAP_H__ #define __I2C_OMAP_H__ +#include + struct omap_i2c_bus_platform_data { u32 clkrate; void (*set_mpu_wkup_lat)(struct device *dev, long set); + int (*device_enable) (struct platform_device *pdev); + int (*device_shutdown) (struct platform_device *pdev); + int (*device_idle) (struct platform_device *pdev); }; #endif -- cgit v1.2.3 From 074e61ec3751da9ab88ee66d3818574556c03489 Mon Sep 17 00:00:00 2001 From: James Morris Date: Wed, 10 Nov 2010 09:01:31 +1100 Subject: kernel: add roundup() code comment from akpm Add roundup() code comment from akpm. Signed-off-by: Andrew Morton Signed-off-by: James Morris --- include/linux/kernel.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/kernel.h b/include/linux/kernel.h index b526947bdf48..3f648d204c37 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -58,6 +58,8 @@ extern const char linux_proc_banner[]; #define FIELD_SIZEOF(t, f) (sizeof(((t*)0)->f)) #define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d)) + +/* The `const' in roundup() prevents gcc-3.3 from calling __divdi3 */ #define roundup(x, y) ( \ { \ const typeof(y) __y = y; \ -- cgit v1.2.3 From f6cd24777513fcc673d432cc29ef59881d3e4df1 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Thu, 4 Nov 2010 11:13:48 +0100 Subject: irq: Better struct irqaction layout We currently use kmalloc-96 slab for struct irqaction allocations on 64bit arches. This is unfortunate because of possible false sharing and two cache lines accesses. Move 'name' and 'dir' fields at the end of the structure, and force a suitable alignement. Hot path fields now use one cache line on x86_64. Signed-off-by: Eric Dumazet Reviewed-by: Andi Kleen Cc: Peter Zijlstra LKML-Reference: <1288865628.2659.69.camel@edumazet-laptop> Signed-off-by: Thomas Gleixner --- include/linux/interrupt.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h index 79d0c4f6d071..55e0d4253e49 100644 --- a/include/linux/interrupt.h +++ b/include/linux/interrupt.h @@ -114,15 +114,15 @@ typedef irqreturn_t (*irq_handler_t)(int, void *); struct irqaction { irq_handler_t handler; unsigned long flags; - const char *name; void *dev_id; struct irqaction *next; int irq; - struct proc_dir_entry *dir; irq_handler_t thread_fn; struct task_struct *thread; unsigned long thread_flags; -}; + const char *name; + struct proc_dir_entry *dir; +} ____cacheline_internodealigned_in_smp; extern irqreturn_t no_action(int cpl, void *dev_id); -- cgit v1.2.3 From da1d39e3903bc35be2b5e8d2116fdd5d337244d4 Mon Sep 17 00:00:00 2001 From: Simon Horman Date: Tue, 9 Nov 2010 17:47:02 +0900 Subject: mmc, sh: Move constants to sh_mmcif.h This moves some constants from sh_mmcif.c to sh_mmcif.h so that they can be used in sh_mmcif_boot_init(). It also alters the definition of SOFT_RST_OFF from (0 << 31) to ~SOFT_RST_ON (= ~(1 << 31)). The former seems bogus. The latter is consistent with the code in sh_mmcif_boot_init(). Cc: Yusuke Goda Cc: Magnus Damm Signed-off-by: Simon Horman Signed-off-by: Paul Mundt --- include/linux/mmc/sh_mmcif.h | 39 ++++++++++++++++++++++++++++++++++----- 1 file changed, 34 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mmc/sh_mmcif.h b/include/linux/mmc/sh_mmcif.h index 5c99da1078aa..a6bfa5296495 100644 --- a/include/linux/mmc/sh_mmcif.h +++ b/include/linux/mmc/sh_mmcif.h @@ -59,6 +59,29 @@ struct sh_mmcif_plat_data { #define MMCIF_CE_HOST_STS2 0x0000004C #define MMCIF_CE_VERSION 0x0000007C +/* CE_BUF_ACC */ +#define BUF_ACC_DMAWEN (1 << 25) +#define BUF_ACC_DMAREN (1 << 24) +#define BUF_ACC_BUSW_32 (0 << 17) +#define BUF_ACC_BUSW_16 (1 << 17) +#define BUF_ACC_ATYP (1 << 16) + +/* CE_CLK_CTRL */ +#define CLK_ENABLE (1 << 24) /* 1: output mmc clock */ +#define CLK_CLEAR ((1 << 19) | (1 << 18) | (1 << 17) | (1 << 16)) +#define CLK_SUP_PCLK ((1 << 19) | (1 << 18) | (1 << 17) | (1 << 16)) +#define SRSPTO_256 ((1 << 13) | (0 << 12)) /* resp timeout */ +#define SRBSYTO_29 ((1 << 11) | (1 << 10) | \ + (1 << 9) | (1 << 8)) /* resp busy timeout */ +#define SRWDTO_29 ((1 << 7) | (1 << 6) | \ + (1 << 5) | (1 << 4)) /* read/write timeout */ +#define SCCSTO_29 ((1 << 3) | (1 << 2) | \ + (1 << 1) | (1 << 0)) /* ccs timeout */ + +/* CE_VERSION */ +#define SOFT_RST_ON (1 << 31) +#define SOFT_RST_OFF ~SOFT_RST_ON + static inline u32 sh_mmcif_readl(void __iomem *addr, int reg) { return readl(addr + reg); @@ -149,17 +172,23 @@ static inline void sh_mmcif_boot_init(void __iomem *base) /* reset */ tmp = sh_mmcif_readl(base, MMCIF_CE_VERSION); - sh_mmcif_writel(base, MMCIF_CE_VERSION, tmp | 0x80000000); - sh_mmcif_writel(base, MMCIF_CE_VERSION, tmp & ~0x80000000); + sh_mmcif_writel(base, MMCIF_CE_VERSION, tmp | SOFT_RST_ON); + sh_mmcif_writel(base, MMCIF_CE_VERSION, tmp & SOFT_RST_OFF); /* byte swap */ - sh_mmcif_writel(base, MMCIF_CE_BUF_ACC, 0x00010000); + sh_mmcif_writel(base, MMCIF_CE_BUF_ACC, BUF_ACC_ATYP); /* Set block size in MMCIF hardware */ sh_mmcif_writel(base, MMCIF_CE_BLOCK_SET, SH_MMCIF_BBS); - /* Enable the clock, set it to Bus clock/256 (about 325Khz)*/ - sh_mmcif_writel(base, MMCIF_CE_CLK_CTRL, 0x01072fff); + /* Enable the clock, set it to Bus clock/256 (about 325Khz). + * It is unclear where 0x70000 comes from or if it is even needed. + * It is there for byte-compatibility with code that is known to + * work. + */ + sh_mmcif_writel(base, MMCIF_CE_CLK_CTRL, + CLK_ENABLE | SRSPTO_256 | SRBSYTO_29 | SRWDTO_29 | + SCCSTO_29 | 0x70000); /* CMD0 */ sh_mmcif_boot_cmd(base, 0x00000040, 0); -- cgit v1.2.3 From 5e4f083f78d03e9f8d2e327daccde16976f9bb00 Mon Sep 17 00:00:00 2001 From: Yong Zhang Date: Sun, 24 Oct 2010 11:50:53 +0800 Subject: hrtimer: Remove stale comment on curr_timer curr_timer doesn't resident in struct hrtimer_cpu_base anymore. Signed-off-by: Yong Zhang LKML-Reference: <1287892253-2587-1-git-send-email-yong.zhang0@gmail.com> Signed-off-by: Thomas Gleixner --- include/linux/hrtimer.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/hrtimer.h b/include/linux/hrtimer.h index fd0c1b857d3d..dd9954b79342 100644 --- a/include/linux/hrtimer.h +++ b/include/linux/hrtimer.h @@ -158,7 +158,6 @@ struct hrtimer_clock_base { * @lock: lock protecting the base and associated clock bases * and timers * @clock_base: array of clock bases for this cpu - * @curr_timer: the timer which is executing a callback right now * @expires_next: absolute time of the next event which was scheduled * via clock_set_next_event() * @hres_active: State of high resolution mode -- cgit v1.2.3 From 0eadcc09203349b11ca477ec367079b23d32ab91 Mon Sep 17 00:00:00 2001 From: Tatyana Brokhman Date: Mon, 1 Nov 2010 18:18:24 +0200 Subject: usb: USB3.0 ch11 definitions Adding hub SuperSpeed usb definitions as defined by ch10 of the USB3.0 spec. Signed-off-by: Tatyana Brokhman Signed-off-by: Greg Kroah-Hartman --- include/linux/usb/ch11.h | 47 +++++++++++++++++++++++++++++++++++++++++++++++ include/linux/usb/hcd.h | 4 ++++ 2 files changed, 51 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb/ch11.h b/include/linux/usb/ch11.h index 119194c85d10..10ec0699bea4 100644 --- a/include/linux/usb/ch11.h +++ b/include/linux/usb/ch11.h @@ -27,6 +27,13 @@ #define HUB_GET_TT_STATE 10 #define HUB_STOP_TT 11 +/* + * Hub class additional requests defined by USB 3.0 spec + * See USB 3.0 spec Table 10-6 + */ +#define HUB_SET_DEPTH 12 +#define HUB_GET_PORT_ERR_COUNT 13 + /* * Hub Class feature numbers * See USB 2.0 spec Table 11-17 @@ -55,6 +62,20 @@ #define USB_PORT_FEAT_INDICATOR 22 #define USB_PORT_FEAT_C_PORT_L1 23 +/* + * Port feature selectors added by USB 3.0 spec. + * See USB 3.0 spec Table 10-7 + */ +#define USB_PORT_FEAT_LINK_STATE 5 +#define USB_PORT_FEAT_U1_TIMEOUT 23 +#define USB_PORT_FEAT_U2_TIMEOUT 24 +#define USB_PORT_FEAT_C_LINK_STATE 25 +#define USB_PORT_FEAT_C_CONFIG_ERR 26 +#define USB_PORT_FEAT_REMOTE_WAKE_MASK 27 +#define USB_PORT_FEAT_BH_PORT_RESET 28 +#define USB_PORT_FEAT_C_BH_PORT_RESET 29 +#define USB_PORT_FEAT_FORCE_LINKPM_ACCEPT 30 + /* * Hub Status and Hub Change results * See USB 2.0 spec Table 11-19 and Table 11-20 @@ -83,6 +104,32 @@ struct usb_port_status { /* bits 13 to 15 are reserved */ #define USB_PORT_STAT_SUPER_SPEED 0x8000 /* Linux-internal */ +/* + * Additions to wPortStatus bit field from USB 3.0 + * See USB 3.0 spec Table 10-10 + */ +#define USB_PORT_STAT_LINK_STATE 0x01e0 +#define USB_SS_PORT_STAT_POWER 0x0200 +#define USB_PORT_STAT_SPEED_5GBPS 0x0000 +/* Valid only if port is enabled */ + +/* + * Definitions for PORT_LINK_STATE values + * (bits 5-8) in wPortStatus + */ +#define USB_SS_PORT_LS_U0 0x0000 +#define USB_SS_PORT_LS_U1 0x0020 +#define USB_SS_PORT_LS_U2 0x0040 +#define USB_SS_PORT_LS_U3 0x0060 +#define USB_SS_PORT_LS_SS_DISABLED 0x0080 +#define USB_SS_PORT_LS_RX_DETECT 0x00a0 +#define USB_SS_PORT_LS_SS_INACTIVE 0x00c0 +#define USB_SS_PORT_LS_POLLING 0x00e0 +#define USB_SS_PORT_LS_RECOVERY 0x0100 +#define USB_SS_PORT_LS_HOT_RESET 0x0120 +#define USB_SS_PORT_LS_COMP_MOD 0x0140 +#define USB_SS_PORT_LS_LOOPBACK 0x0160 + /* * wPortChange bit field * See USB 2.0 spec Table 11-22 diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h index 0b6e751ea0b1..dd6ee49a0844 100644 --- a/include/linux/usb/hcd.h +++ b/include/linux/usb/hcd.h @@ -471,6 +471,10 @@ extern void usb_ep0_reinit(struct usb_device *); /*-------------------------------------------------------------------------*/ +/* class requests from USB 3.0 hub spec, table 10-5 */ +#define SetHubDepth (0x3000 | HUB_SET_DEPTH) +#define GetPortErrorCount (0x8000 | HUB_GET_PORT_ERR_COUNT) + /* * Generic bandwidth allocation constants/support */ -- cgit v1.2.3 From af3b8881f4c9852eefe9c7f1a997b3ecf580561b Mon Sep 17 00:00:00 2001 From: Russ Gorby Date: Tue, 26 Oct 2010 14:13:52 +0100 Subject: ifx6x60: SPI protocol driver for Infineon 6x60 modem Prototype driver for the IFX6x60 series of SPI attached modems by Jim Stanley and Russ Gorby Signed-off-by: Russ Gorby [Some reworking and a major cleanup] Signed-off-by: Alan Cox Signed-off-by: Greg Kroah-Hartman --- include/linux/spi/ifx_modem.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) create mode 100644 include/linux/spi/ifx_modem.h (limited to 'include/linux') diff --git a/include/linux/spi/ifx_modem.h b/include/linux/spi/ifx_modem.h new file mode 100644 index 000000000000..a68f3b19d112 --- /dev/null +++ b/include/linux/spi/ifx_modem.h @@ -0,0 +1,14 @@ +#ifndef LINUX_IFX_MODEM_H +#define LINUX_IFX_MODEM_H + +struct ifx_modem_platform_data { + unsigned short rst_out; /* modem reset out */ + unsigned short pwr_on; /* power on */ + unsigned short rst_pmu; /* reset modem */ + unsigned short tx_pwr; /* modem power threshold */ + unsigned short srdy; /* SRDY */ + unsigned short mrdy; /* MRDY */ + unsigned short is_6160; /* Modem type */ +}; + +#endif -- cgit v1.2.3 From 304e12665a4a7b8b25dfe8c64fa4fd56a04a67ea Mon Sep 17 00:00:00 2001 From: Alexey Charkov Date: Mon, 8 Nov 2010 20:33:20 +0300 Subject: serial: Add support for UART on VIA VT8500 and compatibles This adds a driver for the serial ports found in VIA and WonderMedia Systems-on-Chip. Interrupt-driven FIFO operation is implemented. The hardware also supports pure register-based operation (which is slower) and DMA-based FIFO operation. As the FIFOs are only 16 bytes long, DMA operation is probably not worth the hassle. Signed-off-by: Alexey Charkov Signed-off-by: Greg Kroah-Hartman --- include/linux/serial_core.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index 212eb4c67797..41603d690433 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -199,6 +199,9 @@ /* TI OMAP-UART */ #define PORT_OMAP 96 +/* VIA VT8500 SoC */ +#define PORT_VT8500 97 + #ifdef __KERNEL__ #include -- cgit v1.2.3 From 1d7138de878d1d4210727c1200193e69596f93b3 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Fri, 12 Nov 2010 05:46:50 +0000 Subject: igmp: RCU conversion of in_dev->mc_list MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit in_dev->mc_list is protected by one rwlock (in_dev->mc_list_lock). This can easily be converted to a RCU protection. Writers hold RTNL, so mc_list_lock is removed, not replaced by a spinlock. Signed-off-by: Eric Dumazet Cc: Cypher Wu Cc: Américo Wang Signed-off-by: David S. Miller --- include/linux/igmp.h | 12 ++++++++---- include/linux/inetdevice.h | 5 ++--- 2 files changed, 10 insertions(+), 7 deletions(-) (limited to 'include/linux') diff --git a/include/linux/igmp.h b/include/linux/igmp.h index 93fc2449af10..7d164670f264 100644 --- a/include/linux/igmp.h +++ b/include/linux/igmp.h @@ -167,10 +167,10 @@ struct ip_sf_socklist { */ struct ip_mc_socklist { - struct ip_mc_socklist *next; + struct ip_mc_socklist __rcu *next_rcu; struct ip_mreqn multi; unsigned int sfmode; /* MCAST_{INCLUDE,EXCLUDE} */ - struct ip_sf_socklist *sflist; + struct ip_sf_socklist __rcu *sflist; struct rcu_head rcu; }; @@ -186,11 +186,14 @@ struct ip_sf_list { struct ip_mc_list { struct in_device *interface; __be32 multiaddr; + unsigned int sfmode; struct ip_sf_list *sources; struct ip_sf_list *tomb; - unsigned int sfmode; unsigned long sfcount[2]; - struct ip_mc_list *next; + union { + struct ip_mc_list *next; + struct ip_mc_list __rcu *next_rcu; + }; struct timer_list timer; int users; atomic_t refcnt; @@ -201,6 +204,7 @@ struct ip_mc_list { char loaded; unsigned char gsquery; /* check source marks? */ unsigned char crcount; + struct rcu_head rcu; }; /* V3 exponential field decoding */ diff --git a/include/linux/inetdevice.h b/include/linux/inetdevice.h index ccd5b07d678d..380ba6bc5db1 100644 --- a/include/linux/inetdevice.h +++ b/include/linux/inetdevice.h @@ -52,9 +52,8 @@ struct in_device { atomic_t refcnt; int dead; struct in_ifaddr *ifa_list; /* IP ifaddr chain */ - rwlock_t mc_list_lock; - struct ip_mc_list *mc_list; /* IP multicast filter chain */ - int mc_count; /* Number of installed mcasts */ + struct ip_mc_list __rcu *mc_list; /* IP multicast filter chain */ + int mc_count; /* Number of installed mcasts */ spinlock_t mc_tomb_lock; struct ip_mc_list *mc_tomb; unsigned long mr_v1_seen; -- cgit v1.2.3 From e09b457bdb7e8d23fc54dcef0930ac697d8de895 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Sat, 13 Nov 2010 11:55:17 +0100 Subject: block: simplify holder symlink handling Code to manage symlinks in /sys/block/*/{holders|slaves} are overly complex with multiple holder considerations, redundant extra references to all involved kobjects, unused generic kobject holder support and unnecessary mixup with bd_claim/release functionalities. Strip it down to what's necessary (single gendisk holder) and make it use a separate interface. This is a step for cleaning up bd_claim/release. This patch makes dm-table slightly more complex but it will be simplified again with further changes. Signed-off-by: Tejun Heo Acked-by: Neil Brown Acked-by: Mike Snitzer Cc: dm-devel@redhat.com --- include/linux/fs.h | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index 334d68a17108..66b7f2c5d7e9 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -663,7 +663,7 @@ struct block_device { void * bd_holder; int bd_holders; #ifdef CONFIG_SYSFS - struct list_head bd_holder_list; + struct gendisk * bd_holder_disk; /* for sysfs slave linkng */ #endif struct block_device * bd_contains; unsigned bd_block_size; @@ -2042,11 +2042,17 @@ extern int blkdev_put(struct block_device *, fmode_t); extern int bd_claim(struct block_device *, void *); extern void bd_release(struct block_device *); #ifdef CONFIG_SYSFS -extern int bd_claim_by_disk(struct block_device *, void *, struct gendisk *); -extern void bd_release_from_disk(struct block_device *, struct gendisk *); +extern int bd_link_disk_holder(struct block_device *bdev, struct gendisk *disk); +extern void bd_unlink_disk_holder(struct block_device *bdev); #else -#define bd_claim_by_disk(bdev, holder, disk) bd_claim(bdev, holder) -#define bd_release_from_disk(bdev, disk) bd_release(bdev) +static inline int bd_link_disk_holder(struct block_device *bdev, + struct gendisk *disk) +{ + return 0; +} +static inline void bd_unlink_disk_holder(struct block_device *bdev) +{ +} #endif #endif -- cgit v1.2.3 From e525fd89d380c4a94c0d63913a1dd1a593ed25e7 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Sat, 13 Nov 2010 11:55:17 +0100 Subject: block: make blkdev_get/put() handle exclusive access Over time, block layer has accumulated a set of APIs dealing with bdev open, close, claim and release. * blkdev_get/put() are the primary open and close functions. * bd_claim/release() deal with exclusive open. * open/close_bdev_exclusive() are combination of open and claim and the other way around, respectively. * bd_link/unlink_disk_holder() to create and remove holder/slave symlinks. * open_by_devnum() wraps bdget() + blkdev_get(). The interface is a bit confusing and the decoupling of open and claim makes it impossible to properly guarantee exclusive access as in-kernel open + claim sequence can disturb the existing exclusive open even before the block layer knows the current open if for another exclusive access. Reorganize the interface such that, * blkdev_get() is extended to include exclusive access management. @holder argument is added and, if is @FMODE_EXCL specified, it will gain exclusive access atomically w.r.t. other exclusive accesses. * blkdev_put() is similarly extended. It now takes @mode argument and if @FMODE_EXCL is set, it releases an exclusive access. Also, when the last exclusive claim is released, the holder/slave symlinks are removed automatically. * bd_claim/release() and close_bdev_exclusive() are no longer necessary and either made static or removed. * bd_link_disk_holder() remains the same but bd_unlink_disk_holder() is no longer necessary and removed. * open_bdev_exclusive() becomes a simple wrapper around lookup_bdev() and blkdev_get(). It also has an unexpected extra bdev_read_only() test which probably should be moved into blkdev_get(). * open_by_devnum() is modified to take @holder argument and pass it to blkdev_get(). Most of bdev open/close operations are unified into blkdev_get/put() and most exclusive accesses are tested atomically at the open time (as it should). This cleans up code and removes some, both valid and invalid, but unnecessary all the same, corner cases. open_bdev_exclusive() and open_by_devnum() can use further cleanup - rename to blkdev_get_by_path() and blkdev_get_by_devt() and drop special features. Well, let's leave them for another day. Most conversions are straight-forward. drbd conversion is a bit more involved as there was some reordering, but the logic should stay the same. Signed-off-by: Tejun Heo Acked-by: Neil Brown Acked-by: Ryusuke Konishi Acked-by: Mike Snitzer Acked-by: Philipp Reisner Cc: Peter Osterlund Cc: Martin Schwidefsky Cc: Heiko Carstens Cc: Jan Kara Cc: Andrew Morton Cc: Andreas Dilger Cc: "Theodore Ts'o" Cc: Mark Fasheh Cc: Joel Becker Cc: Alex Elder Cc: Christoph Hellwig Cc: dm-devel@redhat.com Cc: drbd-dev@lists.linbit.com Cc: Leo Chen Cc: Scott Branden Cc: Chris Mason Cc: Steven Whitehouse Cc: Dave Kleikamp Cc: Joern Engel Cc: reiserfs-devel@vger.kernel.org Cc: Alexander Viro --- include/linux/fs.h | 14 ++++---------- 1 file changed, 4 insertions(+), 10 deletions(-) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index 66b7f2c5d7e9..1a033e8ebe4c 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2006,7 +2006,8 @@ extern struct block_device *bdgrab(struct block_device *bdev); extern void bd_set_size(struct block_device *, loff_t size); extern void bd_forget(struct inode *inode); extern void bdput(struct block_device *); -extern struct block_device *open_by_devnum(dev_t, fmode_t); +extern struct block_device *open_by_devnum(dev_t dev, fmode_t mode, + void *holder); extern void invalidate_bdev(struct block_device *); extern int sync_blockdev(struct block_device *bdev); extern struct super_block *freeze_bdev(struct block_device *); @@ -2037,22 +2038,16 @@ extern const struct file_operations def_fifo_fops; extern int ioctl_by_bdev(struct block_device *, unsigned, unsigned long); extern int blkdev_ioctl(struct block_device *, fmode_t, unsigned, unsigned long); extern long compat_blkdev_ioctl(struct file *, unsigned, unsigned long); -extern int blkdev_get(struct block_device *, fmode_t); -extern int blkdev_put(struct block_device *, fmode_t); -extern int bd_claim(struct block_device *, void *); -extern void bd_release(struct block_device *); +extern int blkdev_get(struct block_device *bdev, fmode_t mode, void *holder); +extern int blkdev_put(struct block_device *bdev, fmode_t mode); #ifdef CONFIG_SYSFS extern int bd_link_disk_holder(struct block_device *bdev, struct gendisk *disk); -extern void bd_unlink_disk_holder(struct block_device *bdev); #else static inline int bd_link_disk_holder(struct block_device *bdev, struct gendisk *disk) { return 0; } -static inline void bd_unlink_disk_holder(struct block_device *bdev) -{ -} #endif #endif @@ -2089,7 +2084,6 @@ extern const char *__bdevname(dev_t, char *buffer); extern const char *bdevname(struct block_device *bdev, char *buffer); extern struct block_device *lookup_bdev(const char *); extern struct block_device *open_bdev_exclusive(const char *, fmode_t, void *); -extern void close_bdev_exclusive(struct block_device *, fmode_t); extern void blkdev_show(struct seq_file *,off_t); #else -- cgit v1.2.3 From d4d77629953eabd3c14f6fa5746f6b28babfc55f Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Sat, 13 Nov 2010 11:55:18 +0100 Subject: block: clean up blkdev_get() wrappers and their users After recent blkdev_get() modifications, open_by_devnum() and open_bdev_exclusive() are simple wrappers around blkdev_get(). Replace them with blkdev_get_by_dev() and blkdev_get_by_path(). blkdev_get_by_dev() is identical to open_by_devnum(). blkdev_get_by_path() is slightly different in that it doesn't automatically add %FMODE_EXCL to @mode. All users are converted. Most conversions are mechanical and don't introduce any behavior difference. There are several exceptions. * btrfs now sets FMODE_EXCL in btrfs_device->mode, so there's no reason to OR it explicitly on blkdev_put(). * gfs2, nilfs2 and the generic mount_bdev() now set FMODE_EXCL in sb->s_mode. * With the above changes, sb->s_mode now always should contain FMODE_EXCL. WARN_ON_ONCE() added to kill_block_super() to detect errors. The new blkdev_get_*() functions are with proper docbook comments. While at it, add function description to blkdev_get() too. Signed-off-by: Tejun Heo Cc: Philipp Reisner Cc: Neil Brown Cc: Mike Snitzer Cc: Joern Engel Cc: Chris Mason Cc: Jan Kara Cc: "Theodore Ts'o" Cc: KONISHI Ryusuke Cc: reiserfs-devel@vger.kernel.org Cc: xfs-masters@oss.sgi.com Cc: Alexander Viro --- include/linux/fs.h | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index 1a033e8ebe4c..f48501563917 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2006,8 +2006,6 @@ extern struct block_device *bdgrab(struct block_device *bdev); extern void bd_set_size(struct block_device *, loff_t size); extern void bd_forget(struct inode *inode); extern void bdput(struct block_device *); -extern struct block_device *open_by_devnum(dev_t dev, fmode_t mode, - void *holder); extern void invalidate_bdev(struct block_device *); extern int sync_blockdev(struct block_device *bdev); extern struct super_block *freeze_bdev(struct block_device *); @@ -2039,6 +2037,10 @@ extern int ioctl_by_bdev(struct block_device *, unsigned, unsigned long); extern int blkdev_ioctl(struct block_device *, fmode_t, unsigned, unsigned long); extern long compat_blkdev_ioctl(struct file *, unsigned, unsigned long); extern int blkdev_get(struct block_device *bdev, fmode_t mode, void *holder); +extern struct block_device *blkdev_get_by_path(const char *path, fmode_t mode, + void *holder); +extern struct block_device *blkdev_get_by_dev(dev_t dev, fmode_t mode, + void *holder); extern int blkdev_put(struct block_device *bdev, fmode_t mode); #ifdef CONFIG_SYSFS extern int bd_link_disk_holder(struct block_device *bdev, struct gendisk *disk); @@ -2083,7 +2085,6 @@ static inline void unregister_chrdev(unsigned int major, const char *name) extern const char *__bdevname(dev_t, char *buffer); extern const char *bdevname(struct block_device *bdev, char *buffer); extern struct block_device *lookup_bdev(const char *); -extern struct block_device *open_bdev_exclusive(const char *, fmode_t, void *); extern void blkdev_show(struct seq_file *,off_t); #else -- cgit v1.2.3 From 9fbbdde93231ad7f35c217aa6bbbc7995133f483 Mon Sep 17 00:00:00 2001 From: Erik Gilling Date: Thu, 11 Nov 2010 15:44:43 +0100 Subject: video: add fb_edid_add_monspecs for parsing extended edid information Modern monitors/tvs have more extended EDID information blocks which can contain extra detailed modes. This adds a fb_edid_add_monspecs function which drivers can use to parse those additions blocks. Signed-off-by: Erik Gilling Signed-off-by: Guennadi Liakhovetski Signed-off-by: Paul Mundt --- include/linux/fb.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/fb.h b/include/linux/fb.h index 7fca3dc4e475..6f0274d96f0c 100644 --- a/include/linux/fb.h +++ b/include/linux/fb.h @@ -1092,6 +1092,8 @@ extern int fb_parse_edid(unsigned char *edid, struct fb_var_screeninfo *var); extern const unsigned char *fb_firmware_edid(struct device *device); extern void fb_edid_to_monspecs(unsigned char *edid, struct fb_monspecs *specs); +extern void fb_edid_add_monspecs(unsigned char *edid, + struct fb_monspecs *specs); extern void fb_destroy_modedb(struct fb_videomode *modedb); extern int fb_find_mode_cvt(struct fb_videomode *mode, int margins, int rb); extern unsigned char *fb_ddc_read(struct i2c_adapter *adapter); -- cgit v1.2.3 From 0ad83f6882c41df1a7fa387086029e162038c1f2 Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Thu, 11 Nov 2010 15:45:04 +0100 Subject: fbdev: when parsing E-EDID blocks, also use SVD entries Add parsing of E-EDID SVD entries. In this first version only a few CEA/EIA-861E modes are implemented, more can be added as needed. Signed-off-by: Guennadi Liakhovetski Signed-off-by: Paul Mundt --- include/linux/fb.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/fb.h b/include/linux/fb.h index 6f0274d96f0c..e154a79b8322 100644 --- a/include/linux/fb.h +++ b/include/linux/fb.h @@ -1151,6 +1151,7 @@ struct fb_videomode { extern const char *fb_mode_option; extern const struct fb_videomode vesa_modes[]; +extern const struct fb_videomode cea_modes[64]; struct fb_modelist { struct list_head list; -- cgit v1.2.3 From d83447f0944e73d690218d79c07762ffa4ceb9e4 Mon Sep 17 00:00:00 2001 From: Gerrit Renker Date: Sun, 14 Nov 2010 17:25:46 +0100 Subject: dccp ccid-2: Schedule Sync as out-of-band mechanism The problem with Ack Vectors is that i) their length is variable and can in principle grow quite large, ii) it is hard to predict exactly how large they will be. Due to the second point it seems not a good idea to reduce the MPS; in particular when on average there is enough room for the Ack Vector and an increase in length is momentarily due to some burst loss, after which the Ack Vector returns to its normal/average length. The solution taken by this patch is to subtract a minimum-expected Ack Vector length from the MPS, and to defer any larger Ack Vectors onto a separate Sync - but only if indeed there is no space left on the skb. This patch provides the infrastructure to schedule Sync-packets for transporting (urgent) out-of-band data. Its signalling is quicker than scheduling an Ack, since it does not need to wait for new application data. Signed-off-by: Gerrit Renker --- include/linux/dccp.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/dccp.h b/include/linux/dccp.h index 749f01ccd26e..eed52bcd35d0 100644 --- a/include/linux/dccp.h +++ b/include/linux/dccp.h @@ -462,6 +462,7 @@ struct dccp_ackvec; * @dccps_hc_rx_insert_options - receiver wants to add options when acking * @dccps_hc_tx_insert_options - sender wants to add options when sending * @dccps_server_timewait - server holds timewait state on close (RFC 4340, 8.3) + * @dccps_sync_scheduled - flag which signals "send out-of-band message soon" * @dccps_xmitlet - tasklet scheduled by the TX CCID to dequeue data packets * @dccps_xmit_timer - used by the TX CCID to delay sending (rate-based pacing) * @dccps_syn_rtt - RTT sample from Request/Response exchange (in usecs) @@ -503,6 +504,7 @@ struct dccp_sock { __u8 dccps_hc_rx_insert_options:1; __u8 dccps_hc_tx_insert_options:1; __u8 dccps_server_timewait:1; + __u8 dccps_sync_scheduled:1; struct tasklet_struct dccps_xmitlet; struct timer_list dccps_xmit_timer; }; -- cgit v1.2.3 From 0e60ebe04c51807db972d03665651ae6b5c26d7e Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Mon, 15 Nov 2010 18:17:21 +0100 Subject: netfilter: add __rcu annotations Add some __rcu annotations and use helpers to reduce number of sparse warnings (CONFIG_SPARSE_RCU_POINTER=y) Signed-off-by: Eric Dumazet Signed-off-by: Patrick McHardy --- include/linux/netfilter.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/netfilter.h b/include/linux/netfilter.h index 89341c32631a..928a35ec21c7 100644 --- a/include/linux/netfilter.h +++ b/include/linux/netfilter.h @@ -265,7 +265,7 @@ struct nf_afinfo { int route_key_size; }; -extern const struct nf_afinfo *nf_afinfo[NFPROTO_NUMPROTO]; +extern const struct nf_afinfo __rcu *nf_afinfo[NFPROTO_NUMPROTO]; static inline const struct nf_afinfo *nf_get_afinfo(unsigned short family) { return rcu_dereference(nf_afinfo[family]); @@ -355,9 +355,9 @@ nf_nat_decode_session(struct sk_buff *skb, struct flowi *fl, u_int8_t family) #endif /*CONFIG_NETFILTER*/ #if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE) -extern void (*ip_ct_attach)(struct sk_buff *, struct sk_buff *); +extern void (*ip_ct_attach)(struct sk_buff *, struct sk_buff *) __rcu; extern void nf_ct_attach(struct sk_buff *, struct sk_buff *); -extern void (*nf_ct_destroy)(struct nf_conntrack *); +extern void (*nf_ct_destroy)(struct nf_conntrack *) __rcu; #else static inline void nf_ct_attach(struct sk_buff *new, struct sk_buff *skb) {} #endif -- cgit v1.2.3 From 58e998c6d23988490162cef0784b19ea274d90bb Mon Sep 17 00:00:00 2001 From: Jesse Gross Date: Fri, 29 Oct 2010 12:14:55 +0000 Subject: offloading: Force software GSO for multiple vlan tags. We currently use vlan_features to check for TSO support if there is a vlan tag. However, it's quite likely that the NIC is not able to do TSO when there is an arbitrary number of tags. Therefore if there is more than one tag (in-band or out-of-band), fall back to software emulation. Signed-off-by: Jesse Gross CC: Ben Hutchings Signed-off-by: David S. Miller --- include/linux/netdevice.h | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 578debb801f4..6e4cfbc53d4c 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -2239,6 +2239,8 @@ unsigned long netdev_fix_features(unsigned long features, const char *name); void netif_stacked_transfer_operstate(const struct net_device *rootdev, struct net_device *dev); +int netif_get_vlan_features(struct sk_buff *skb, struct net_device *dev); + static inline int net_gso_ok(int features, int gso_type) { int feature = gso_type << NETIF_F_GSO_SHIFT; @@ -2254,10 +2256,7 @@ static inline int skb_gso_ok(struct sk_buff *skb, int features) static inline int netif_needs_gso(struct net_device *dev, struct sk_buff *skb) { if (skb_is_gso(skb)) { - int features = dev->features; - - if (skb->protocol == htons(ETH_P_8021Q) || skb->vlan_tci) - features &= dev->vlan_features; + int features = netif_get_vlan_features(skb, dev); return (!skb_gso_ok(skb, features) || unlikely(skb->ip_summed != CHECKSUM_PARTIAL)); -- cgit v1.2.3 From 2e48928d8a0f38c1b5c81eb3f1294de8a6382c68 Mon Sep 17 00:00:00 2001 From: Stephen Hemminger Date: Wed, 20 Oct 2010 10:16:58 -0700 Subject: rfkill: remove dead code The following code is defined but never used. Signed-off-by: Stephen Hemminger Signed-off-by: John W. Linville --- include/linux/rfkill.h | 31 ------------------------------- 1 file changed, 31 deletions(-) (limited to 'include/linux') diff --git a/include/linux/rfkill.h b/include/linux/rfkill.h index 08c32e4f261a..c6c608482cba 100644 --- a/include/linux/rfkill.h +++ b/include/linux/rfkill.h @@ -354,37 +354,6 @@ static inline bool rfkill_blocked(struct rfkill *rfkill) } #endif /* RFKILL || RFKILL_MODULE */ - -#ifdef CONFIG_RFKILL_LEDS -/** - * rfkill_get_led_trigger_name - Get the LED trigger name for the button's LED. - * This function might return a NULL pointer if registering of the - * LED trigger failed. Use this as "default_trigger" for the LED. - */ -const char *rfkill_get_led_trigger_name(struct rfkill *rfkill); - -/** - * rfkill_set_led_trigger_name -- set the LED trigger name - * @rfkill: rfkill struct - * @name: LED trigger name - * - * This function sets the LED trigger name of the radio LED - * trigger that rfkill creates. It is optional, but if called - * must be called before rfkill_register() to be effective. - */ -void rfkill_set_led_trigger_name(struct rfkill *rfkill, const char *name); -#else -static inline const char *rfkill_get_led_trigger_name(struct rfkill *rfkill) -{ - return NULL; -} - -static inline void -rfkill_set_led_trigger_name(struct rfkill *rfkill, const char *name) -{ -} -#endif - #endif /* __KERNEL__ */ #endif /* RFKILL_H */ -- cgit v1.2.3 From ca4ffe8f2848169a8ded0ea8a60b2d81925564c9 Mon Sep 17 00:00:00 2001 From: "Luis R. Rodriguez" Date: Wed, 20 Oct 2010 10:18:55 -0700 Subject: cfg80211: fix disabling channels based on hints After a module loads you will have loaded the world roaming regulatory domain or a custom regulatory domain. Further regulatory hints are welcomed and should be respected unless the regulatory hint is coming from a country IE as the IEEE spec allows for a country IE to be a subset of what is allowed by the local regulatory agencies. So disable all channels that do not fit a regulatory domain sent from a unless the hint is from a country IE and the country IE had no information about the band we are currently processing. This fixes a few regulatory issues, for example for drivers that depend on CRDA and had no 5 GHz freqencies allowed were not properly disabling 5 GHz at all, furthermore it also allows users to restrict devices further as was intended. If you recieve a country IE upon association we will also disable the channels that are not allowed if the country IE had at least one channel on the respective band we are procesing. This was the original intention behind this design but it was completely overlooked... Cc: David Quan Cc: Jouni Malinen cc: Easwar Krishnan Cc: stable@kernel.org Signed-off-by: Luis R. Rodriguez Signed-off-by: John W. Linville --- include/linux/nl80211.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index 0edb2566c14c..fb877b5621b7 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -1307,7 +1307,11 @@ enum nl80211_bitrate_attr { * wireless core it thinks its knows the regulatory domain we should be in. * @NL80211_REGDOM_SET_BY_COUNTRY_IE: the wireless core has received an * 802.11 country information element with regulatory information it - * thinks we should consider. + * thinks we should consider. cfg80211 only processes the country + * code from the IE, and relies on the regulatory domain information + * structure pased by userspace (CRDA) from our wireless-regdb. + * If a channel is enabled but the country code indicates it should + * be disabled we disable the channel and re-enable it upon disassociation. */ enum nl80211_reg_initiator { NL80211_REGDOM_SET_BY_CORE, -- cgit v1.2.3 From c8aea565e8f715d9f10064b1cbfbc15bf75df501 Mon Sep 17 00:00:00 2001 From: Gery Kahn Date: Tue, 5 Oct 2010 16:09:05 +0200 Subject: wl1271: ref_clock cosmetic changes Cosmetic cleanup for ref_clock code while configured by board. Signed-off-by: Gery Kahn Signed-off-by: Luciano Coelho --- include/linux/wl12xx.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/linux') diff --git a/include/linux/wl12xx.h b/include/linux/wl12xx.h index 4f902e1908aa..bebb8efea0a6 100644 --- a/include/linux/wl12xx.h +++ b/include/linux/wl12xx.h @@ -24,6 +24,14 @@ #ifndef _LINUX_WL12XX_H #define _LINUX_WL12XX_H +/* The board reference clock values */ +enum { + WL12XX_REFCLOCK_19 = 0, /* 19.2 MHz */ + WL12XX_REFCLOCK_26 = 1, /* 26 MHz */ + WL12XX_REFCLOCK_38 = 2, /* 38.4 MHz */ + WL12XX_REFCLOCK_54 = 3, /* 54 MHz */ +}; + struct wl12xx_platform_data { void (*set_power)(bool enable); /* SDIO only: IRQ number if WLAN_IRQ line is used, 0 for SDIO IRQs */ -- cgit v1.2.3 From 7919a57bc608140aa8614c19eac40c6916fb61d2 Mon Sep 17 00:00:00 2001 From: Andreas Herrmann Date: Mon, 30 Aug 2010 19:04:01 +0000 Subject: bitops: Provide generic sign_extend32 function This patch moves code out from wireless drivers where two different functions are defined in three code locations for the same purpose and provides a common function to sign extend a 32-bit value. Signed-off-by: Andreas Herrmann Signed-off-by: John W. Linville --- include/linux/bitops.h | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'include/linux') diff --git a/include/linux/bitops.h b/include/linux/bitops.h index 827cc95711ef..2184c6b97aeb 100644 --- a/include/linux/bitops.h +++ b/include/linux/bitops.h @@ -109,6 +109,17 @@ static inline __u8 ror8(__u8 word, unsigned int shift) return (word >> shift) | (word << (8 - shift)); } +/** + * sign_extend32 - sign extend a 32-bit value using specified bit as sign-bit + * @value: value to sign extend + * @index: 0 based bit index (0<=index<32) to sign bit + */ +static inline __s32 sign_extend32(__u32 value, int index) +{ + __u8 shift = 31 - index; + return (__s32)(value << shift) >> shift; +} + static inline unsigned fls_long(unsigned long l) { if (sizeof(l) == 4) -- cgit v1.2.3 From fe8222406c8277a21172479d3a8283d31c209028 Mon Sep 17 00:00:00 2001 From: Tom Herbert Date: Tue, 9 Nov 2010 10:47:38 +0000 Subject: net: Simplify RX queue allocation This patch move RX queue allocation to alloc_netdev_mq and freeing of the queues to free_netdev (symmetric to TX queue allocation). Each kobject RX queue takes a reference to the queue's device so that the device can't be freed before all the kobjects have been released-- this obviates the need for reference counts specific to RX queues. Signed-off-by: Tom Herbert Signed-off-by: David S. Miller --- include/linux/netdevice.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 6e4cfbc53d4c..fccb11f879e5 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -592,8 +592,7 @@ struct netdev_rx_queue { struct rps_map __rcu *rps_map; struct rps_dev_flow_table __rcu *rps_flow_table; struct kobject kobj; - struct netdev_rx_queue *first; - atomic_t count; + struct net_device *dev; } ____cacheline_aligned_in_smp; #endif /* CONFIG_RPS */ -- cgit v1.2.3 From c59504ebc5baa628706d10c2d3c7e1f4bc3c2147 Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Sun, 14 Nov 2010 17:04:57 +0000 Subject: include/linux/if_macvlan.h: Remove unnecessary semicolons Signed-off-by: Joe Perches Signed-off-by: David S. Miller --- include/linux/if_macvlan.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/if_macvlan.h b/include/linux/if_macvlan.h index 8a2fd66a8b5f..ac96a2d76291 100644 --- a/include/linux/if_macvlan.h +++ b/include/linux/if_macvlan.h @@ -69,7 +69,7 @@ static inline void macvlan_count_rx(const struct macvlan_dev *vlan, rx_stats = this_cpu_ptr(vlan->rx_stats); if (likely(success)) { u64_stats_update_begin(&rx_stats->syncp); - rx_stats->rx_packets++;; + rx_stats->rx_packets++; rx_stats->rx_bytes += len; if (multicast) rx_stats->rx_multicast++; -- cgit v1.2.3 From a386f99025f13b32502fe5dedf223c20d7283826 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Mon, 15 Nov 2010 06:38:11 +0000 Subject: bridge: add proper RCU annotation to should_route_hook Add br_should_route_hook_t typedef, this is the only way we can get a clean RCU implementation for function pointer. Move route_hook to location where it is used. Signed-off-by: Eric Dumazet Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller --- include/linux/if_bridge.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/if_bridge.h b/include/linux/if_bridge.h index 0d241a5c4909..f7e73c338c40 100644 --- a/include/linux/if_bridge.h +++ b/include/linux/if_bridge.h @@ -102,7 +102,9 @@ struct __fdb_entry { #include extern void brioctl_set(int (*ioctl_hook)(struct net *, unsigned int, void __user *)); -extern int (*br_should_route_hook)(struct sk_buff *skb); + +typedef int (*br_should_route_hook_t)(struct sk_buff *skb); +extern br_should_route_hook_t __rcu *br_should_route_hook; #endif -- cgit v1.2.3 From 61391cde9eefac5cfcf6d214aa80c77e58b1626b Mon Sep 17 00:00:00 2001 From: stephen hemminger Date: Mon, 15 Nov 2010 06:38:12 +0000 Subject: netdev: add rcu annotations to receive handler hook Suggested by Eric's bridge RCU changes. Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller --- include/linux/netdevice.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index fccb11f879e5..b45c1b8b1d19 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -994,8 +994,8 @@ struct net_device { unsigned int real_num_rx_queues; #endif - rx_handler_func_t *rx_handler; - void *rx_handler_data; + rx_handler_func_t __rcu *rx_handler; + void __rcu *rx_handler_data; struct netdev_queue __rcu *ingress_queue; -- cgit v1.2.3 From 073ef1f6e508688392580e4f35dcad9aabd1e100 Mon Sep 17 00:00:00 2001 From: Lionel Debroux Date: Tue, 9 Nov 2010 21:48:49 +0100 Subject: hibernation: constify platform_hibernation_ops Patch against mainline. Changes since v1: added one hunk; no longer adding "const" qualifier to pointers in platform_hibernation_ops after seeing b4144e4f6e3b448d322095ca08af393682a69e33. Signed-off-by: Jiri Kosina --- include/linux/suspend.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/suspend.h b/include/linux/suspend.h index 26697514c5ec..40ead943fd6a 100644 --- a/include/linux/suspend.h +++ b/include/linux/suspend.h @@ -245,7 +245,7 @@ extern void swsusp_set_page_free(struct page *); extern void swsusp_unset_page_free(struct page *); extern unsigned long get_safe_page(gfp_t gfp_mask); -extern void hibernation_set_ops(struct platform_hibernation_ops *ops); +extern void hibernation_set_ops(const struct platform_hibernation_ops *ops); extern int hibernate(void); extern bool system_entering_hibernation(void); #else /* CONFIG_HIBERNATION */ @@ -253,7 +253,7 @@ static inline int swsusp_page_is_forbidden(struct page *p) { return 0; } static inline void swsusp_set_page_free(struct page *p) {} static inline void swsusp_unset_page_free(struct page *p) {} -static inline void hibernation_set_ops(struct platform_hibernation_ops *ops) {} +static inline void hibernation_set_ops(const struct platform_hibernation_ops *ops) {} static inline int hibernate(void) { return -ENOSYS; } static inline bool system_entering_hibernation(void) { return false; } #endif /* CONFIG_HIBERNATION */ -- cgit v1.2.3 From 2f55ac072f5344519348c0c94b3d2f4cca46847b Mon Sep 17 00:00:00 2001 From: Lionel Debroux Date: Tue, 16 Nov 2010 14:14:02 +0100 Subject: suspend: constify platform_suspend_ops While at it, fix two checkpatch errors. Several non-const struct instances constified by this patch were added after the introduction of platform_suspend_ops in checkpatch.pl's list of "should be const" structs (79404849e90a41ea2109bd0e2f7c7164b0c4ce73). Patch against mainline. Inspired by hunks of the grsecurity patch, updated for newer kernels. Signed-off-by: Lionel Debroux Acked-by: Ingo Molnar Signed-off-by: Jiri Kosina --- include/linux/suspend.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/suspend.h b/include/linux/suspend.h index 40ead943fd6a..f45f3ccfdfa9 100644 --- a/include/linux/suspend.h +++ b/include/linux/suspend.h @@ -122,7 +122,7 @@ struct platform_suspend_ops { * suspend_set_ops - set platform dependent suspend operations * @ops: The new suspend operations to set. */ -extern void suspend_set_ops(struct platform_suspend_ops *ops); +extern void suspend_set_ops(const struct platform_suspend_ops *ops); extern int suspend_valid_only_mem(suspend_state_t state); /** @@ -147,7 +147,7 @@ extern int pm_suspend(suspend_state_t state); #else /* !CONFIG_SUSPEND */ #define suspend_valid_only_mem NULL -static inline void suspend_set_ops(struct platform_suspend_ops *ops) {} +static inline void suspend_set_ops(const struct platform_suspend_ops *ops) {} static inline int pm_suspend(suspend_state_t state) { return -ENOSYS; } #endif /* !CONFIG_SUSPEND */ -- cgit v1.2.3 From 8ffab51b3dfc54876f145f15b351c41f3f703195 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Wed, 10 Nov 2010 21:14:04 +0000 Subject: macvlan: lockless tx path macvlan is a stacked device, like tunnels. We should use the lockless mechanism we are using in tunnels and loopback. This patch completely removes locking in TX path. tx stat counters are added into existing percpu stat structure, renamed from rx_stats to pcpu_stats. Note : this reverts commit 2c11455321f37 (macvlan: add multiqueue capability) Note : rx_errors converted to a 32bit counter, like tx_dropped, since they dont need 64bit range. Signed-off-by: Eric Dumazet Cc: Patrick McHardy Cc: Ben Greear Cc: Ben Hutchings Acked-by: Patrick McHardy Signed-off-by: David S. Miller --- include/linux/if_macvlan.h | 34 ++++++++++++++++++++-------------- 1 file changed, 20 insertions(+), 14 deletions(-) (limited to 'include/linux') diff --git a/include/linux/if_macvlan.h b/include/linux/if_macvlan.h index ac96a2d76291..e28b2e4959d4 100644 --- a/include/linux/if_macvlan.h +++ b/include/linux/if_macvlan.h @@ -25,19 +25,25 @@ struct macvlan_port; struct macvtap_queue; /** - * struct macvlan_rx_stats - MACVLAN percpu rx stats + * struct macvlan_pcpu_stats - MACVLAN percpu stats * @rx_packets: number of received packets * @rx_bytes: number of received bytes * @rx_multicast: number of received multicast packets + * @tx_packets: number of transmitted packets + * @tx_bytes: number of transmitted bytes * @syncp: synchronization point for 64bit counters - * @rx_errors: number of errors + * @rx_errors: number of rx errors + * @tx_dropped: number of tx dropped packets */ -struct macvlan_rx_stats { +struct macvlan_pcpu_stats { u64 rx_packets; u64 rx_bytes; u64 rx_multicast; + u64 tx_packets; + u64 tx_bytes; struct u64_stats_sync syncp; - unsigned long rx_errors; + u32 rx_errors; + u32 tx_dropped; }; /* @@ -52,7 +58,7 @@ struct macvlan_dev { struct hlist_node hlist; struct macvlan_port *port; struct net_device *lowerdev; - struct macvlan_rx_stats __percpu *rx_stats; + struct macvlan_pcpu_stats __percpu *pcpu_stats; enum macvlan_mode mode; int (*receive)(struct sk_buff *skb); int (*forward)(struct net_device *dev, struct sk_buff *skb); @@ -64,18 +70,18 @@ static inline void macvlan_count_rx(const struct macvlan_dev *vlan, unsigned int len, bool success, bool multicast) { - struct macvlan_rx_stats *rx_stats; - - rx_stats = this_cpu_ptr(vlan->rx_stats); if (likely(success)) { - u64_stats_update_begin(&rx_stats->syncp); - rx_stats->rx_packets++; - rx_stats->rx_bytes += len; + struct macvlan_pcpu_stats *pcpu_stats; + + pcpu_stats = this_cpu_ptr(vlan->pcpu_stats); + u64_stats_update_begin(&pcpu_stats->syncp); + pcpu_stats->rx_packets++; + pcpu_stats->rx_bytes += len; if (multicast) - rx_stats->rx_multicast++; - u64_stats_update_end(&rx_stats->syncp); + pcpu_stats->rx_multicast++; + u64_stats_update_end(&pcpu_stats->syncp); } else { - rx_stats->rx_errors++; + this_cpu_inc(vlan->pcpu_stats->rx_errors); } } -- cgit v1.2.3 From a75d946f42ae1771424a9582129fc5182ff48a1b Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Thu, 4 Nov 2010 16:20:20 +0100 Subject: console: move for_each_console to linux/console.h Move it out of printk.c so that we can use it all over the code. There are some potential users which will be converted to that macro in next patches. Signed-off-by: Jiri Slaby Signed-off-by: Greg Kroah-Hartman --- include/linux/console.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/console.h b/include/linux/console.h index 95cf6f08a59d..875cfb1c8132 100644 --- a/include/linux/console.h +++ b/include/linux/console.h @@ -126,6 +126,12 @@ struct console { struct console *next; }; +/* + * for_each_console() allows you to iterate on each console + */ +#define for_each_console(con) \ + for (con = console_drivers; con != NULL; con = con->next) + extern int console_set_on_cmdline; extern int add_preferred_console(char *name, int idx, char *options); -- cgit v1.2.3 From 3dfbd044d0d99cad2fe50e4f6c79845703fa0558 Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Thu, 4 Nov 2010 16:20:23 +0100 Subject: TTY: include termios.h in tty_driver.h We reference termios and termiox in tty_driver.h, but we do not include linux/termios.h where these are defined. Add the #include properly. Otherwise when we include tty_driver.h, we get compile errors. Signed-off-by: Jiri Slaby Cc: Alan Cox Cc: Greg KH Signed-off-by: Greg Kroah-Hartman --- include/linux/tty_driver.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/tty_driver.h b/include/linux/tty_driver.h index db2d227694da..09678ed370f8 100644 --- a/include/linux/tty_driver.h +++ b/include/linux/tty_driver.h @@ -235,6 +235,7 @@ #include #include #include +#include struct tty_struct; struct tty_driver; -- cgit v1.2.3 From e44dcb6c377529805bbaae505d5b333daab69111 Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Fri, 12 Nov 2010 19:47:47 +0100 Subject: serial: mpc52xx: make printout for type more generic The printout for the type should be just "5xxx", so 512x users won't wonder why they have a mpc52xx-type UART. Signed-off-by: Wolfram Sang Cc: Grant Likely Cc: Greg Kroah-Hartman Signed-off-by: Greg Kroah-Hartman --- include/linux/serial_core.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index 41603d690433..9ff9b7db293b 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -95,7 +95,7 @@ /* PPC CPM type number */ #define PORT_CPM 58 -/* MPC52xx type numbers */ +/* MPC52xx (and MPC512x) type numbers */ #define PORT_MPC52xx 59 /* IBM icom */ -- cgit v1.2.3 From afe0cbf87500f0585d217deb8c6fd329793a7957 Mon Sep 17 00:00:00 2001 From: Bruno Randolf Date: Wed, 10 Nov 2010 12:50:50 +0900 Subject: cfg80211: Add nl80211 antenna configuration Allow setting of TX and RX antennas configuration via nl80211. The antenna configuration is defined as a bitmap of allowed antennas to use. This API can be used to mask out antennas which are not attached or should not be used for other reasons like regulatory concerns or special setups. Separate bitmaps are used for RX and TX to allow configuring different antennas for receiving and transmitting. Each bitmap is 32 bit long, each bit representing one antenna, starting with antenna 1 at the first bit. If an antenna bit is set, this means the driver is allowed to use this antenna for RX or TX respectively; if the bit is not set the hardware is not allowed to use this antenna. Using bitmaps has the benefit of allowing for a flexible configuration interface which can support many different configurations and which can be used for 802.11n as well as non-802.11n devices. Instead of relying on some hardware specific assumptions, drivers can use this information to know which antennas are actually attached to the system and derive their capabilities based on that. 802.11n devices should enable or disable chains, based on which antennas are present (If all antennas belonging to a particular chain are disabled, the entire chain should be disabled). HT capabilities (like STBC, TX Beamforming, Antenna selection) should be calculated based on the available chains after applying the antenna masks. Should a 802.11n device have diversity antennas attached to one of their chains, diversity can be enabled or disabled based on the antenna information. Non-802.11n drivers can use the antenna masks to select RX and TX antennas and to enable or disable antenna diversity. While covering chainmasks for 802.11n and the standard "legacy" modes "fixed antenna 1", "fixed antenna 2" and "diversity" this API also allows more rare, but useful configurations as follows: 1) Send on antenna 1, receive on antenna 2 (or vice versa). This can be used to have a low gain antenna for TX in order to keep within the regulatory constraints and a high gain antenna for RX in order to receive weaker signals ("speak softly, but listen harder"). This can be useful for building long-shot outdoor links. Another usage of this setup is having a low-noise pre-amplifier on antenna 1 and a power amplifier on the other antenna. This way transmit noise is mostly kept out of the low noise receive channel. (This would be bitmaps: tx 1 rx 2). 2) Another similar setup is: Use RX diversity on both antennas, but always send on antenna 1. Again that would allow us to benefit from a higher gain RX antenna, while staying within the legal limits. (This would be: tx 0 rx 3). 3) And finally there can be special experimental setups in research and development even with pre 802.11n hardware where more than 2 antennas are available. It's good to keep the API simple, yet flexible. Signed-off-by: Bruno Randolf -- v7: Made bitmasks 32 bit wide and rebased to latest wireless-testing. Signed-off-by: John W. Linville --- include/linux/nl80211.h | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index fb877b5621b7..17c5c8849250 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -804,6 +804,28 @@ enum nl80211_commands { * @NL80211_ATTR_SUPPORT_IBSS_RSN: The device supports IBSS RSN, which mostly * means support for per-station GTKs. * + * @NL80211_ATTR_WIPHY_ANTENNA_TX: Bitmap of allowed antennas for transmitting. + * This can be used to mask out antennas which are not attached or should + * not be used for transmitting. If an antenna is not selected in this + * bitmap the hardware is not allowed to transmit on this antenna. + * + * Each bit represents one antenna, starting with antenna 1 at the first + * bit. Depending on which antennas are selected in the bitmap, 802.11n + * drivers can derive which chainmasks to use (if all antennas belonging to + * a particular chain are disabled this chain should be disabled) and if + * a chain has diversity antennas wether diversity should be used or not. + * HT capabilities (STBC, TX Beamforming, Antenna selection) can be + * derived from the available chains after applying the antenna mask. + * Non-802.11n drivers can derive wether to use diversity or not. + * Drivers may reject configurations or RX/TX mask combinations they cannot + * support by returning -EINVAL. + * + * @NL80211_ATTR_WIPHY_ANTENNA_RX: Bitmap of allowed antennas for receiving. + * This can be used to mask out antennas which are not attached or should + * not be used for receiving. If an antenna is not selected in this bitmap + * the hardware should not be configured to receive on this antenna. + * For a more detailed descripton see @NL80211_ATTR_WIPHY_ANTENNA_TX. + * * @NL80211_ATTR_MAX: highest attribute number currently defined * @__NL80211_ATTR_AFTER_LAST: internal use */ @@ -973,6 +995,9 @@ enum nl80211_attrs { NL80211_ATTR_SUPPORT_IBSS_RSN, + NL80211_ATTR_WIPHY_ANTENNA_TX, + NL80211_ATTR_WIPHY_ANTENNA_RX, + /* add attributes here, update the policy in nl80211.c */ __NL80211_ATTR_AFTER_LAST, -- cgit v1.2.3 From 885a46d0f7942d76c2f3860acb45f75237d3bb42 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Thu, 11 Nov 2010 15:07:22 +0100 Subject: cfg80211: add support for setting the ad-hoc multicast rate Signed-off-by: Felix Fietkau Signed-off-by: John W. Linville --- include/linux/nl80211.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index 17c5c8849250..037b4e498890 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -826,6 +826,8 @@ enum nl80211_commands { * the hardware should not be configured to receive on this antenna. * For a more detailed descripton see @NL80211_ATTR_WIPHY_ANTENNA_TX. * + * @NL80211_ATTR_MCAST_RATE: Multicast tx rate (in 100 kbps) for IBSS + * * @NL80211_ATTR_MAX: highest attribute number currently defined * @__NL80211_ATTR_AFTER_LAST: internal use */ @@ -998,6 +1000,8 @@ enum nl80211_attrs { NL80211_ATTR_WIPHY_ANTENNA_TX, NL80211_ATTR_WIPHY_ANTENNA_RX, + NL80211_ATTR_MCAST_RATE, + /* add attributes here, update the policy in nl80211.c */ __NL80211_ATTR_AFTER_LAST, -- cgit v1.2.3 From 6ddf27cdbc218a412d7e993fdc08e30eec2042ce Mon Sep 17 00:00:00 2001 From: Ming Lei Date: Mon, 15 Nov 2010 15:57:30 -0500 Subject: USB: make usb_mark_last_busy use pm_runtime_mark_last_busy Since the runtime-PM core already defines a .last_busy field in device.power, this patch uses it to replace the .last_busy field defined in usb_device and uses pm_runtime_mark_last_busy to implement usb_mark_last_busy. Signed-off-by: Ming Lei Reviewed-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- include/linux/usb.h | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/usb.h b/include/linux/usb.h index 35fe6ab222bb..7d22b3340a7f 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -20,6 +20,7 @@ #include /* for struct completion */ #include /* for current && schedule_timeout */ #include /* for struct mutex */ +#include /* for runtime PM */ struct usb_device; struct usb_driver; @@ -407,7 +408,6 @@ struct usb_tt; * @quirks: quirks of the whole device * @urbnum: number of URBs submitted for the whole device * @active_duration: total time device is not suspended - * @last_busy: time of last use * @autosuspend_delay: in jiffies * @connect_time: time device was first connected * @do_remote_wakeup: remote wakeup should be enabled @@ -481,7 +481,6 @@ struct usb_device { unsigned long active_duration; #ifdef CONFIG_PM - unsigned long last_busy; int autosuspend_delay; unsigned long connect_time; @@ -527,7 +526,7 @@ extern void usb_autopm_put_interface_no_suspend(struct usb_interface *intf); static inline void usb_mark_last_busy(struct usb_device *udev) { - udev->last_busy = jiffies; + pm_runtime_mark_last_busy(&udev->dev); } #else -- cgit v1.2.3 From fcc4a01eb8661226e80632327673f67bf6a5840b Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Mon, 15 Nov 2010 15:57:51 -0500 Subject: USB: use the runtime-PM autosuspend implementation This patch (as1428) converts USB over to the new runtime-PM core autosuspend framework. One slightly awkward aspect of the conversion is that USB devices will now have two suspend-delay attributes: the old power/autosuspend file and the new power/autosuspend_delay_ms file. One expresses the delay time in seconds and the other in milliseconds, but otherwise they do the same thing. The old attribute can be deprecated and then removed eventually. Signed-off-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- include/linux/usb.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/usb.h b/include/linux/usb.h index 7d22b3340a7f..5ee2223af08c 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -408,7 +408,6 @@ struct usb_tt; * @quirks: quirks of the whole device * @urbnum: number of URBs submitted for the whole device * @active_duration: total time device is not suspended - * @autosuspend_delay: in jiffies * @connect_time: time device was first connected * @do_remote_wakeup: remote wakeup should be enabled * @reset_resume: needs reset instead of resume @@ -481,7 +480,6 @@ struct usb_device { unsigned long active_duration; #ifdef CONFIG_PM - int autosuspend_delay; unsigned long connect_time; unsigned do_remote_wakeup:1; -- cgit v1.2.3 From da6836500414ae734cd9873c2d553db594f831e9 Mon Sep 17 00:00:00 2001 From: Eric Paris Date: Tue, 16 Nov 2010 11:52:38 +0000 Subject: netfilter: allow hooks to pass error code back up the stack SELinux would like to pass certain fatal errors back up the stack. This patch implements the generic netfilter support for this functionality. Based-on-patch-by: Patrick McHardy Signed-off-by: Eric Paris Signed-off-by: David S. Miller --- include/linux/netfilter.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/netfilter.h b/include/linux/netfilter.h index 03317c8d4077..1893837b3966 100644 --- a/include/linux/netfilter.h +++ b/include/linux/netfilter.h @@ -33,6 +33,8 @@ #define NF_QUEUE_NR(x) ((((x) << NF_VERDICT_BITS) & NF_VERDICT_QMASK) | NF_QUEUE) +#define NF_DROP_ERR(x) (((-x) << NF_VERDICT_BITS) | NF_DROP) + /* only for userspace compatibility */ #ifndef __KERNEL__ /* Generic cache responses from hook functions. -- cgit v1.2.3 From f8ff182c716c6f11ca3061961f5722f26a14e101 Mon Sep 17 00:00:00 2001 From: Thomas Graf Date: Tue, 16 Nov 2010 04:30:14 +0000 Subject: rtnetlink: Link address family API Each net_device contains address family specific data such as per device settings and statistics. We already expose this data via procfs/sysfs and partially netlink. The netlink method requires the requester to send one RTM_GETLINK request for each address family it wishes to receive data of and then merge this data itself. This patch implements a new API which combines all address family specific link data in a new netlink attribute IFLA_AF_SPEC. IFLA_AF_SPEC contains a sequence of nested attributes, one for each address family which in turn defines the structure of its own attribute. Example: [IFLA_AF_SPEC] = { [AF_INET] = { [IFLA_INET_CONF] = ..., }, [AF_INET6] = { [IFLA_INET6_FLAGS] = ..., [IFLA_INET6_CONF] = ..., } } The API also allows for address families to implement a function which parses the IFLA_AF_SPEC attribute sent by userspace to implement address family specific link options. Signed-off-by: Thomas Graf Signed-off-by: David S. Miller --- include/linux/if_link.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'include/linux') diff --git a/include/linux/if_link.h b/include/linux/if_link.h index 2fc66dd783ee..443d04a66a79 100644 --- a/include/linux/if_link.h +++ b/include/linux/if_link.h @@ -80,6 +80,24 @@ struct rtnl_link_ifmap { __u8 port; }; +/* + * IFLA_AF_SPEC + * Contains nested attributes for address family specific attributes. + * Each address family may create a attribute with the address family + * number as type and create its own attribute structure in it. + * + * Example: + * [IFLA_AF_SPEC] = { + * [AF_INET] = { + * [IFLA_INET_CONF] = ..., + * }, + * [AF_INET6] = { + * [IFLA_INET6_FLAGS] = ..., + * [IFLA_INET6_CONF] = ..., + * } + * } + */ + enum { IFLA_UNSPEC, IFLA_ADDRESS, @@ -116,6 +134,7 @@ enum { IFLA_STATS64, IFLA_VF_PORTS, IFLA_PORT_SELF, + IFLA_AF_SPEC, __IFLA_MAX }; -- cgit v1.2.3 From ca7479ebbd9f7621646bf2792cb7143647f035bb Mon Sep 17 00:00:00 2001 From: Thomas Graf Date: Tue, 16 Nov 2010 04:31:20 +0000 Subject: inet: Define IPV4_DEVCONF_MAX Define IPV4_DEVCONF_MAX to get rid of MAX - 1 notation. Signed-off-by: Thomas Graf Signed-off-by: David S. Miller --- include/linux/inetdevice.h | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/inetdevice.h b/include/linux/inetdevice.h index 380ba6bc5db1..2b86eaf11773 100644 --- a/include/linux/inetdevice.h +++ b/include/linux/inetdevice.h @@ -41,10 +41,12 @@ enum __IPV4_DEVCONF_MAX }; +#define IPV4_DEVCONF_MAX (__IPV4_DEVCONF_MAX - 1) + struct ipv4_devconf { void *sysctl; - int data[__IPV4_DEVCONF_MAX - 1]; - DECLARE_BITMAP(state, __IPV4_DEVCONF_MAX - 1); + int data[IPV4_DEVCONF_MAX]; + DECLARE_BITMAP(state, IPV4_DEVCONF_MAX); }; struct in_device { @@ -90,7 +92,7 @@ static inline void ipv4_devconf_set(struct in_device *in_dev, int index, static inline void ipv4_devconf_setall(struct in_device *in_dev) { - bitmap_fill(in_dev->cnf.state, __IPV4_DEVCONF_MAX - 1); + bitmap_fill(in_dev->cnf.state, IPV4_DEVCONF_MAX); } #define IN_DEV_CONF_GET(in_dev, attr) \ -- cgit v1.2.3 From 9f0f7272ac9506f4c8c05cc597b7e376b0b9f3e4 Mon Sep 17 00:00:00 2001 From: Thomas Graf Date: Tue, 16 Nov 2010 04:32:48 +0000 Subject: ipv4: AF_INET link address family Implements the AF_INET link address family exposing the per device configuration settings via netlink using the attribute IFLA_INET_CONF. The format of IFLA_INET_CONF differs depending on the direction the attribute is sent. The attribute sent by the kernel consists of a u32 array, basically a 1:1 copy of in_device->cnf.data[]. The attribute expected by the kernel must consist of a sequence of nested u32 attributes, each representing a change request, e.g. [IFLA_INET_CONF] = { [IPV4_DEVCONF_FORWARDING] = 1, [IPV4_DEVCONF_NOXFRM] = 0, } libnl userspace API documentation and example available from: http://www.infradead.org/~tgr/libnl/doc-git/group__link__inet.html Signed-off-by: Thomas Graf Signed-off-by: David S. Miller --- include/linux/if_link.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/linux') diff --git a/include/linux/if_link.h b/include/linux/if_link.h index 443d04a66a79..2e02e4d7b11e 100644 --- a/include/linux/if_link.h +++ b/include/linux/if_link.h @@ -147,6 +147,14 @@ enum { #define IFLA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifinfomsg)) #endif +enum { + IFLA_INET_UNSPEC, + IFLA_INET_CONF, + __IFLA_INET_MAX, +}; + +#define IFLA_INET_MAX (__IFLA_INET_MAX - 1) + /* ifi_flags. IFF_* flags. -- cgit v1.2.3 From 6b6e39a6a8da7234c538d14c43d3583da8875f9c Mon Sep 17 00:00:00 2001 From: Kay Sievers Date: Mon, 15 Nov 2010 23:13:18 +0100 Subject: driver-core: merge private parts of class and bus As classes and busses are pretty much the same thing, and we want to merge them together into a 'subsystem' in the future, let us share the same private data parts to make that merge easier. Signed-off-by: Kay Sievers Signed-off-by: Greg Kroah-Hartman --- include/linux/device.h | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/device.h b/include/linux/device.h index dd4895313468..1e2d335ab683 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -30,9 +30,8 @@ struct device_private; struct device_driver; struct driver_private; struct class; -struct class_private; +struct subsys_private; struct bus_type; -struct bus_type_private; struct device_node; struct bus_attribute { @@ -65,7 +64,7 @@ struct bus_type { const struct dev_pm_ops *pm; - struct bus_type_private *p; + struct subsys_private *p; }; extern int __must_check bus_register(struct bus_type *bus); @@ -213,7 +212,7 @@ struct class { const struct dev_pm_ops *pm; - struct class_private *p; + struct subsys_private *p; }; struct class_dev_iter { -- cgit v1.2.3 From b2c0710c464ede15e1fc52fb1e7ee9ba54cea186 Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Thu, 9 Sep 2010 13:40:39 -0700 Subject: rcu: move TINY_RCU from softirq to kthread If RCU priority boosting is to be meaningful, callback invocation must be boosted in addition to preempted RCU readers. Otherwise, in presence of CPU real-time threads, the grace period ends, but the callbacks don't get invoked. If the callbacks don't get invoked, the associated memory doesn't get freed, so the system is still subject to OOM. But it is not reasonable to priority-boost RCU_SOFTIRQ, so this commit moves the callback invocations to a kthread, which can be boosted easily. Signed-off-by: Paul E. McKenney Signed-off-by: Paul E. McKenney --- include/linux/rcupdate.h | 1 - include/linux/rcutiny.h | 8 +++----- include/linux/rcutree.h | 1 + 3 files changed, 4 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h index 03cda7bed985..7142ee3304ab 100644 --- a/include/linux/rcupdate.h +++ b/include/linux/rcupdate.h @@ -118,7 +118,6 @@ static inline int rcu_preempt_depth(void) #endif /* #else #ifdef CONFIG_PREEMPT_RCU */ /* Internal to kernel */ -extern void rcu_init(void); extern void rcu_sched_qs(int cpu); extern void rcu_bh_qs(int cpu); extern void rcu_check_callbacks(int cpu, int user); diff --git a/include/linux/rcutiny.h b/include/linux/rcutiny.h index 13877cb93a60..ea025a611fcc 100644 --- a/include/linux/rcutiny.h +++ b/include/linux/rcutiny.h @@ -27,7 +27,9 @@ #include -#define rcu_init_sched() do { } while (0) +static inline void rcu_init(void) +{ +} #ifdef CONFIG_TINY_RCU @@ -125,16 +127,12 @@ static inline void rcu_cpu_stall_reset(void) } #ifdef CONFIG_DEBUG_LOCK_ALLOC - extern int rcu_scheduler_active __read_mostly; extern void rcu_scheduler_starting(void); - #else /* #ifdef CONFIG_DEBUG_LOCK_ALLOC */ - static inline void rcu_scheduler_starting(void) { } - #endif /* #else #ifdef CONFIG_DEBUG_LOCK_ALLOC */ #endif /* __LINUX_RCUTINY_H */ diff --git a/include/linux/rcutree.h b/include/linux/rcutree.h index 95518e628794..c0e96833aa73 100644 --- a/include/linux/rcutree.h +++ b/include/linux/rcutree.h @@ -30,6 +30,7 @@ #ifndef __LINUX_RCUTREE_H #define __LINUX_RCUTREE_H +extern void rcu_init(void); extern void rcu_note_context_switch(int cpu); extern int rcu_needs_cpu(int cpu); extern void rcu_cpu_stall_reset(void); -- cgit v1.2.3 From 5f2b0ba4d94b3ac23cbc4b7f675d98eb677a760a Mon Sep 17 00:00:00 2001 From: Don Zickus Date: Fri, 12 Nov 2010 11:22:23 -0500 Subject: x86, nmi_watchdog: Remove the old nmi_watchdog Now that we have a new nmi_watchdog that is more generic and sits on top of the perf subsystem, we really do not need the old nmi_watchdog any more. In addition, the old nmi_watchdog doesn't really work if you are using the default clocksource, hpet. The old nmi_watchdog code relied on local apic interrupts to determine if the cpu is still alive. With hpet as the clocksource, these interrupts don't increment any more and the old nmi_watchdog triggers false postives. This piece removes the old nmi_watchdog code and stubs out any variables and functions calls. The stubs are the same ones used by the new nmi_watchdog code, so it should be well tested. Signed-off-by: Don Zickus Cc: fweisbec@gmail.com Cc: gorcunov@openvz.org LKML-Reference: <1289578944-28564-2-git-send-email-dzickus@redhat.com> Signed-off-by: Ingo Molnar --- include/linux/nmi.h | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/nmi.h b/include/linux/nmi.h index 06aab5eee134..0cb3e5c246d0 100644 --- a/include/linux/nmi.h +++ b/include/linux/nmi.h @@ -16,10 +16,7 @@ */ #ifdef ARCH_HAS_NMI_WATCHDOG #include -extern void touch_nmi_watchdog(void); -extern void acpi_nmi_disable(void); -extern void acpi_nmi_enable(void); -#else +#endif #ifndef CONFIG_HARDLOCKUP_DETECTOR static inline void touch_nmi_watchdog(void) { @@ -30,7 +27,6 @@ extern void touch_nmi_watchdog(void); #endif static inline void acpi_nmi_disable(void) { } static inline void acpi_nmi_enable(void) { } -#endif /* * Create trigger_all_cpu_backtrace() out of the arch-provided -- cgit v1.2.3 From 072b198a4ad48bd722ec6d203d65422a4698eae7 Mon Sep 17 00:00:00 2001 From: Don Zickus Date: Fri, 12 Nov 2010 11:22:24 -0500 Subject: x86, nmi_watchdog: Remove all stub function calls from old nmi_watchdog Now that the bulk of the old nmi_watchdog is gone, remove all the stub variables and hooks associated with it. This touches lots of files mainly because of how the io_apic nmi_watchdog was implemented. Now that the io_apic nmi_watchdog is forever gone, remove all its fingers. Most of this code was not being exercised by virtue of nmi_watchdog != NMI_IO_APIC, so there shouldn't be anything to risky here. Signed-off-by: Don Zickus Cc: fweisbec@gmail.com Cc: gorcunov@openvz.org LKML-Reference: <1289578944-28564-3-git-send-email-dzickus@redhat.com> Signed-off-by: Ingo Molnar --- include/linux/nmi.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/nmi.h b/include/linux/nmi.h index 0cb3e5c246d0..1c451e6ecc17 100644 --- a/include/linux/nmi.h +++ b/include/linux/nmi.h @@ -25,8 +25,6 @@ static inline void touch_nmi_watchdog(void) #else extern void touch_nmi_watchdog(void); #endif -static inline void acpi_nmi_disable(void) { } -static inline void acpi_nmi_enable(void) { } /* * Create trigger_all_cpu_backtrace() out of the arch-provided -- cgit v1.2.3 From 48c5ccae88dcd989d9de507e8510313c6cbd352b Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Sat, 13 Nov 2010 19:32:29 +0100 Subject: sched: Simplify cpu-hot-unplug task migration While discussing the need for sched_idle_next(), Oleg remarked that since try_to_wake_up() ensures sleeping tasks will end up running on a sane cpu, we can do away with migrate_live_tasks(). If we then extend the existing hack of migrating current from CPU_DYING to migrating the full rq worth of tasks from CPU_DYING, the need for the sched_idle_next() abomination disappears as well, since idle will be the only possible thread left after the migration thread stops. This greatly simplifies the hot-unplug task migration path, as can be seen from the resulting code reduction (and about half the new lines are comments). Suggested-by: Oleg Nesterov Signed-off-by: Peter Zijlstra LKML-Reference: <1289851597.2109.547.camel@laptop> Signed-off-by: Ingo Molnar --- include/linux/sched.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index 3cd70cf91fde..29d953abb5ad 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1871,14 +1871,11 @@ extern void sched_clock_idle_sleep_event(void); extern void sched_clock_idle_wakeup_event(u64 delta_ns); #ifdef CONFIG_HOTPLUG_CPU -extern void move_task_off_dead_cpu(int dead_cpu, struct task_struct *p); extern void idle_task_exit(void); #else static inline void idle_task_exit(void) {} #endif -extern void sched_idle_next(void); - #if defined(CONFIG_NO_HZ) && defined(CONFIG_SMP) extern void wake_up_idle_cpu(int cpu); #else -- cgit v1.2.3 From 2069dd75c7d0f49355939e5586daf5a9ab216db7 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Mon, 15 Nov 2010 15:47:00 -0800 Subject: sched: Rewrite tg_shares_up) By tracking a per-cpu load-avg for each cfs_rq and folding it into a global task_group load on each tick we can rework tg_shares_up to be strictly per-cpu. This should improve cpu-cgroup performance for smp systems significantly. [ Paul: changed to use queueing cfs_rq + bug fixes ] Signed-off-by: Paul Turner Signed-off-by: Peter Zijlstra LKML-Reference: <20101115234937.580480400@google.com> Signed-off-by: Ingo Molnar --- include/linux/sched.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index 29d953abb5ad..8abb8aa59664 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1885,8 +1885,6 @@ static inline void wake_up_idle_cpu(int cpu) { } extern unsigned int sysctl_sched_latency; extern unsigned int sysctl_sched_min_granularity; extern unsigned int sysctl_sched_wakeup_granularity; -extern unsigned int sysctl_sched_shares_ratelimit; -extern unsigned int sysctl_sched_shares_thresh; extern unsigned int sysctl_sched_child_runs_first; enum sched_tunable_scaling { -- cgit v1.2.3 From a7a4f8a752ec734b2eab904fc863d5dc873de338 Mon Sep 17 00:00:00 2001 From: Paul Turner Date: Mon, 15 Nov 2010 15:47:06 -0800 Subject: sched: Add sysctl_sched_shares_window Introduce a new sysctl for the shares window and disambiguate it from sched_time_avg. A 10ms window appears to be a good compromise between accuracy and performance. Signed-off-by: Paul Turner Signed-off-by: Peter Zijlstra LKML-Reference: <20101115234938.112173964@google.com> Signed-off-by: Ingo Molnar --- include/linux/sched.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index 8abb8aa59664..840f1277492f 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1900,6 +1900,7 @@ extern unsigned int sysctl_sched_migration_cost; extern unsigned int sysctl_sched_nr_migrate; extern unsigned int sysctl_sched_time_avg; extern unsigned int sysctl_timer_migration; +extern unsigned int sysctl_sched_shares_window; int sched_proc_update_handler(struct ctl_table *table, int write, void __user *buffer, size_t *length, -- cgit v1.2.3 From 84e1c6bb38eb318e456558b610396d9f1afaabf0 Mon Sep 17 00:00:00 2001 From: matthieu castet Date: Tue, 16 Nov 2010 22:35:16 +0100 Subject: x86: Add RO/NX protection for loadable kernel modules This patch is a logical extension of the protection provided by CONFIG_DEBUG_RODATA to LKMs. The protection is provided by splitting module_core and module_init into three logical parts each and setting appropriate page access permissions for each individual section: 1. Code: RO+X 2. RO data: RO+NX 3. RW data: RW+NX In order to achieve proper protection, layout_sections() have been modified to align each of the three parts mentioned above onto page boundary. Next, the corresponding page access permissions are set right before successful exit from load_module(). Further, free_module() and sys_init_module have been modified to set module_core and module_init as RW+NX right before calling module_free(). By default, the original section layout and access flags are preserved. When compiled with CONFIG_DEBUG_SET_MODULE_RONX=y, the patch will page-align each group of sections to ensure that each page contains only one type of content and will enforce RO/NX for each group of pages. -v1: Initial proof-of-concept patch. -v2: The patch have been re-written to reduce the number of #ifdefs and to make it architecture-agnostic. Code formatting has also been corrected. -v3: Opportunistic RO/NX protection is now unconditional. Section page-alignment is enabled when CONFIG_DEBUG_RODATA=y. -v4: Removed most macros and improved coding style. -v5: Changed page-alignment and RO/NX section size calculation -v6: Fixed comments. Restricted RO/NX enforcement to x86 only -v7: Introduced CONFIG_DEBUG_SET_MODULE_RONX, added calls to set_all_modules_text_rw() and set_all_modules_text_ro() in ftrace -v8: updated for compatibility with linux 2.6.33-rc5 -v9: coding style fixes -v10: more coding style fixes -v11: minor adjustments for -tip -v12: minor adjustments for v2.6.35-rc2-tip -v13: minor adjustments for v2.6.37-rc1-tip Signed-off-by: Siarhei Liakh Signed-off-by: Xuxian Jiang Acked-by: Arjan van de Ven Reviewed-by: James Morris Signed-off-by: H. Peter Anvin Cc: Andi Kleen Cc: Rusty Russell Cc: Stephen Rothwell Cc: Dave Jones Cc: Kees Cook Cc: Linus Torvalds LKML-Reference: <4CE2F914.9070106@free.fr> [ minor cleanliness edits, -v14: build failure fix ] Signed-off-by: Ingo Molnar --- include/linux/module.h | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/module.h b/include/linux/module.h index b29e7458b966..ddaa689d71bd 100644 --- a/include/linux/module.h +++ b/include/linux/module.h @@ -308,6 +308,9 @@ struct module /* The size of the executable code in each section. */ unsigned int init_text_size, core_text_size; + /* Size of RO sections of the module (text+rodata) */ + unsigned int init_ro_size, core_ro_size; + /* Arch-specific module values */ struct mod_arch_specific arch; @@ -672,7 +675,6 @@ static inline int module_get_iter_tracepoints(struct tracepoint_iter *iter) { return 0; } - #endif /* CONFIG_MODULES */ #ifdef CONFIG_SYSFS @@ -687,6 +689,13 @@ extern int module_sysfs_initialized; #define __MODULE_STRING(x) __stringify(x) +#ifdef CONFIG_DEBUG_SET_MODULE_RONX +extern void set_all_modules_text_rw(void); +extern void set_all_modules_text_ro(void); +#else +static inline void set_all_modules_text_rw(void) { } +static inline void set_all_modules_text_ro(void) { } +#endif #ifdef CONFIG_GENERIC_BUG void module_bug_finalize(const Elf_Ehdr *, const Elf_Shdr *, -- cgit v1.2.3 From 9c0729dc8062bed96189bd14ac6d4920f3958743 Mon Sep 17 00:00:00 2001 From: Soeren Sandmann Pedersen Date: Fri, 5 Nov 2010 05:59:39 -0400 Subject: x86: Eliminate bp argument from the stack tracing routines The various stack tracing routines take a 'bp' argument in which the caller is supposed to provide the base pointer to use, or 0 if doesn't have one. Since bp is garbage whenever CONFIG_FRAME_POINTER is not defined, this means all callers in principle should either always pass 0, or be conditional on CONFIG_FRAME_POINTER. However, there are only really three use cases for stack tracing: (a) Trace the current task, including IRQ stack if any (b) Trace the current task, but skip IRQ stack (c) Trace some other task In all cases, if CONFIG_FRAME_POINTER is not defined, bp should just be 0. If it _is_ defined, then - in case (a) bp should be gotten directly from the CPU's register, so the caller should pass NULL for regs, - in case (b) the caller should should pass the IRQ registers to dump_trace(), - in case (c) bp should be gotten from the top of the task's stack, so the caller should pass NULL for regs. Hence, the bp argument is not necessary because the combination of task and regs is sufficient to determine an appropriate value for bp. This patch introduces a new inline function stack_frame(task, regs) that computes the desired bp. This function is then called from the two versions of dump_stack(). Signed-off-by: Soren Sandmann Acked-by: Steven Rostedt Cc: Thomas Gleixner Cc: Ingo Molnar Cc: H. Peter Anvin Cc: Peter Zijlstra Cc: Arjan van de Ven , Cc: Frederic Weisbecker , Cc: Arnaldo Carvalho de Melo , LKML-Reference: > Signed-off-by: Frederic Weisbecker --- include/linux/stacktrace.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/stacktrace.h b/include/linux/stacktrace.h index 51efbef38fb0..25310f1d7f37 100644 --- a/include/linux/stacktrace.h +++ b/include/linux/stacktrace.h @@ -2,6 +2,7 @@ #define __LINUX_STACKTRACE_H struct task_struct; +struct pt_regs; #ifdef CONFIG_STACKTRACE struct task_struct; @@ -13,7 +14,8 @@ struct stack_trace { }; extern void save_stack_trace(struct stack_trace *trace); -extern void save_stack_trace_bp(struct stack_trace *trace, unsigned long bp); +extern void save_stack_trace_regs(struct stack_trace *trace, + struct pt_regs *regs); extern void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace); -- cgit v1.2.3 From 61c32659b12c44e62de32fbf99f7e4ca783dc38b Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Thu, 18 Nov 2010 01:39:17 +0100 Subject: tracing: New flag to allow non privileged users to use a trace event This adds a new trace event internal flag that allows them to be used in perf by non privileged users in case of task bound tracing. This is desired for syscalls tracepoint because they don't leak global system informations, like some other tracepoints. Signed-off-by: Frederic Weisbecker Cc: Ingo Molnar Cc: Peter Zijlstra Cc: Arnaldo Carvalho de Melo Cc: Thomas Gleixner Cc: Steven Rostedt Cc: Li Zefan Cc: Jason Baron --- include/linux/ftrace_event.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ftrace_event.h b/include/linux/ftrace_event.h index 8beabb958f61..312dce7e0d52 100644 --- a/include/linux/ftrace_event.h +++ b/include/linux/ftrace_event.h @@ -154,12 +154,14 @@ enum { TRACE_EVENT_FL_ENABLED_BIT, TRACE_EVENT_FL_FILTERED_BIT, TRACE_EVENT_FL_RECORDED_CMD_BIT, + TRACE_EVENT_FL_CAP_ANY_BIT, }; enum { TRACE_EVENT_FL_ENABLED = (1 << TRACE_EVENT_FL_ENABLED_BIT), TRACE_EVENT_FL_FILTERED = (1 << TRACE_EVENT_FL_FILTERED_BIT), TRACE_EVENT_FL_RECORDED_CMD = (1 << TRACE_EVENT_FL_RECORDED_CMD_BIT), + TRACE_EVENT_FL_CAP_ANY = (1 << TRACE_EVENT_FL_CAP_ANY_BIT), }; struct ftrace_event_call { -- cgit v1.2.3 From 1ed0c5971159974185653170543a764cc061c857 Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Thu, 18 Nov 2010 01:46:57 +0100 Subject: tracing: New macro to set up initial event flags value This introduces the new TRACE_EVENT_FLAGS() macro in order to set up initial event flags value. This macro must simply follow the definition of a trace event and take the event name and the flag value as parameters: TRACE_EVENT(my_event, ..... .... ); TRACE_EVENT_FLAGS(my_event, 1) This will set up 1 as the initial my_event->flags value. Signed-off-by: Frederic Weisbecker Cc: Ingo Molnar Cc: Peter Zijlstra Cc: Arnaldo Carvalho de Melo Cc: Thomas Gleixner Cc: Steven Rostedt Cc: Li Zefan Cc: Jason Baron --- include/linux/tracepoint.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/tracepoint.h b/include/linux/tracepoint.h index a4a90b6726ce..5a6074fcd81d 100644 --- a/include/linux/tracepoint.h +++ b/include/linux/tracepoint.h @@ -234,6 +234,8 @@ do_trace: \ PARAMS(void *__data, proto), \ PARAMS(__data, args)) +#define TRACE_EVENT_FLAGS(event, flag) + #endif /* DECLARE_TRACE */ #ifndef TRACE_EVENT @@ -354,4 +356,6 @@ do_trace: \ assign, print, reg, unreg) \ DECLARE_TRACE(name, PARAMS(proto), PARAMS(args)) +#define TRACE_EVENT_FLAGS(event, flag) + #endif /* ifdef TRACE_EVENT (see note above) */ -- cgit v1.2.3 From 53cf810b1934f08a68e131aeeb16267a778f43df Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Thu, 18 Nov 2010 02:11:42 +0100 Subject: tracing: Allow syscall trace events for non privileged users As for the raw syscalls events, individual syscall events won't leak system wide information on task bound tracing. Allow non privileged users to use them in such workflow. Signed-off-by: Frederic Weisbecker Cc: Ingo Molnar Cc: Peter Zijlstra Cc: Arnaldo Carvalho de Melo Cc: Thomas Gleixner Cc: Steven Rostedt Cc: Li Zefan Cc: Jason Baron --- include/linux/ftrace_event.h | 8 ++++++++ include/linux/syscalls.h | 6 ++++-- 2 files changed, 12 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ftrace_event.h b/include/linux/ftrace_event.h index 312dce7e0d52..725bf6bd39f7 100644 --- a/include/linux/ftrace_event.h +++ b/include/linux/ftrace_event.h @@ -198,6 +198,14 @@ struct ftrace_event_call { #endif }; +#define __TRACE_EVENT_FLAGS(name, value) \ + static int __init trace_init_flags_##name(void) \ + { \ + event_##name.flags = value; \ + return 0; \ + } \ + early_initcall(trace_init_flags_##name); + #define PERF_MAX_TRACE_SIZE 2048 #define MAX_FILTER_PRED 32 diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index cacc27a0e285..13b9731d30cf 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -137,7 +137,8 @@ extern struct trace_event_functions exit_syscall_print_funcs; .class = &event_class_syscall_enter, \ .event.funcs = &enter_syscall_print_funcs, \ .data = (void *)&__syscall_meta_##sname,\ - } + }; \ + __TRACE_EVENT_FLAGS(enter_##sname, TRACE_EVENT_FL_CAP_ANY) #define SYSCALL_TRACE_EXIT_EVENT(sname) \ static struct syscall_metadata \ @@ -152,7 +153,8 @@ extern struct trace_event_functions exit_syscall_print_funcs; .class = &event_class_syscall_exit, \ .event.funcs = &exit_syscall_print_funcs, \ .data = (void *)&__syscall_meta_##sname,\ - } + }; \ + __TRACE_EVENT_FLAGS(exit_##sname, TRACE_EVENT_FL_CAP_ANY) #define SYSCALL_METADATA(sname, nb) \ SYSCALL_TRACE_ENTER_EVENT(sname); \ -- cgit v1.2.3 From 423478cde453eebdfcfebf4b8d378d8f5d49b853 Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Thu, 18 Nov 2010 02:21:26 +0100 Subject: tracing: Remove useless syscall ftrace_event_call declaration It is defined right after, which makes the declaration completely useless. Signed-off-by: Frederic Weisbecker Cc: Ingo Molnar Cc: Peter Zijlstra Cc: Arnaldo Carvalho de Melo Cc: Thomas Gleixner Cc: Steven Rostedt Cc: Li Zefan Cc: Jason Baron --- include/linux/syscalls.h | 4 ---- 1 file changed, 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 13b9731d30cf..18cd0684fc4e 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -127,8 +127,6 @@ extern struct trace_event_functions exit_syscall_print_funcs; #define SYSCALL_TRACE_ENTER_EVENT(sname) \ static struct syscall_metadata \ __attribute__((__aligned__(4))) __syscall_meta_##sname; \ - static struct ftrace_event_call \ - __attribute__((__aligned__(4))) event_enter_##sname; \ static struct ftrace_event_call __used \ __attribute__((__aligned__(4))) \ __attribute__((section("_ftrace_events"))) \ @@ -143,8 +141,6 @@ extern struct trace_event_functions exit_syscall_print_funcs; #define SYSCALL_TRACE_EXIT_EVENT(sname) \ static struct syscall_metadata \ __attribute__((__aligned__(4))) __syscall_meta_##sname; \ - static struct ftrace_event_call \ - __attribute__((__aligned__(4))) event_exit_##sname; \ static struct ftrace_event_call __used \ __attribute__((__aligned__(4))) \ __attribute__((section("_ftrace_events"))) \ -- cgit v1.2.3 From 5070437cd99511f69ae561f2ab417142a47a85ec Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Thu, 21 Oct 2010 17:55:01 +0200 Subject: power_supply: Add gpio charger driver This patch adds a simple driver for chargers indicating their online status through a GPIO pin. Signed-off-by: Lars-Peter Clausen Signed-off-by: Anton Vorontsov --- include/linux/power/gpio-charger.h | 41 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 include/linux/power/gpio-charger.h (limited to 'include/linux') diff --git a/include/linux/power/gpio-charger.h b/include/linux/power/gpio-charger.h new file mode 100644 index 000000000000..de1dfe09a03d --- /dev/null +++ b/include/linux/power/gpio-charger.h @@ -0,0 +1,41 @@ +/* + * Copyright (C) 2010, Lars-Peter Clausen + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 675 Mass Ave, Cambridge, MA 02139, USA. + * + */ + +#ifndef __LINUX_POWER_GPIO_CHARGER_H__ +#define __LINUX_POWER_GPIO_CHARGER_H__ + +#include +#include + +/** + * struct gpio_charger_platform_data - platform_data for gpio_charger devices + * @name: Name for the chargers power_supply device + * @type: Type of the charger + * @gpio: GPIO which is used to indicate the chargers status + * @gpio_active_low: Should be set to 1 if the GPIO is active low otherwise 0 + * @supplied_to: Array of battery names to which this chargers supplies power + * @num_supplicants: Number of entries in the supplied_to array + */ +struct gpio_charger_platform_data { + const char *name; + enum power_supply_type type; + + int gpio; + int gpio_active_low; + + char **supplied_to; + size_t num_supplicants; +}; + +#endif -- cgit v1.2.3 From 866f3b25a2eb60d7529c227a0ecd80c3aba443fd Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Thu, 18 Nov 2010 09:33:19 -0800 Subject: bonding: IGMP handling cleanup Instead of iterating in_dev->mc_list from bonding driver, its better to call a helper function provided by igmp.c Details of implementation (locking) are private to igmp code. ip_mc_rejoin_group(struct ip_mc_list *im) becomes ip_mc_rejoin_groups(struct in_device *in_dev); Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- include/linux/igmp.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/igmp.h b/include/linux/igmp.h index 7d164670f264..c4987f265109 100644 --- a/include/linux/igmp.h +++ b/include/linux/igmp.h @@ -238,7 +238,7 @@ extern void ip_mc_unmap(struct in_device *); extern void ip_mc_remap(struct in_device *); extern void ip_mc_dec_group(struct in_device *in_dev, __be32 addr); extern void ip_mc_inc_group(struct in_device *in_dev, __be32 addr); -extern void ip_mc_rejoin_group(struct ip_mc_list *im); +extern void ip_mc_rejoin_groups(struct in_device *in_dev); #endif #endif -- cgit v1.2.3 From 4c3710afbc333c33100739dec10662b4ee64e219 Mon Sep 17 00:00:00 2001 From: Changli Gao Date: Tue, 16 Nov 2010 20:28:24 +0000 Subject: net: move definitions of BPF_S_* to net/core/filter.c BPF_S_* are used internally, should not be exposed to the others. Signed-off-by: Changli Gao Acked-by: Eric Dumazet Acked-by: Hagen Paul Pfeifer Signed-off-by: David S. Miller --- include/linux/filter.h | 48 ------------------------------------------------ 1 file changed, 48 deletions(-) (limited to 'include/linux') diff --git a/include/linux/filter.h b/include/linux/filter.h index 69b43dbea6c6..151f5d703b7e 100644 --- a/include/linux/filter.h +++ b/include/linux/filter.h @@ -91,54 +91,6 @@ struct sock_fprog { /* Required for SO_ATTACH_FILTER. */ #define BPF_TAX 0x00 #define BPF_TXA 0x80 -enum { - BPF_S_RET_K = 0, - BPF_S_RET_A, - BPF_S_ALU_ADD_K, - BPF_S_ALU_ADD_X, - BPF_S_ALU_SUB_K, - BPF_S_ALU_SUB_X, - BPF_S_ALU_MUL_K, - BPF_S_ALU_MUL_X, - BPF_S_ALU_DIV_X, - BPF_S_ALU_AND_K, - BPF_S_ALU_AND_X, - BPF_S_ALU_OR_K, - BPF_S_ALU_OR_X, - BPF_S_ALU_LSH_K, - BPF_S_ALU_LSH_X, - BPF_S_ALU_RSH_K, - BPF_S_ALU_RSH_X, - BPF_S_ALU_NEG, - BPF_S_LD_W_ABS, - BPF_S_LD_H_ABS, - BPF_S_LD_B_ABS, - BPF_S_LD_W_LEN, - BPF_S_LD_W_IND, - BPF_S_LD_H_IND, - BPF_S_LD_B_IND, - BPF_S_LD_IMM, - BPF_S_LDX_W_LEN, - BPF_S_LDX_B_MSH, - BPF_S_LDX_IMM, - BPF_S_MISC_TAX, - BPF_S_MISC_TXA, - BPF_S_ALU_DIV_K, - BPF_S_LD_MEM, - BPF_S_LDX_MEM, - BPF_S_ST, - BPF_S_STX, - BPF_S_JMP_JA, - BPF_S_JMP_JEQ_K, - BPF_S_JMP_JEQ_X, - BPF_S_JMP_JGE_K, - BPF_S_JMP_JGE_X, - BPF_S_JMP_JGT_K, - BPF_S_JMP_JGT_X, - BPF_S_JMP_JSET_K, - BPF_S_JMP_JSET_X, -}; - #ifndef BPF_MAXINSNS #define BPF_MAXINSNS 4096 #endif -- cgit v1.2.3 From c5485a7e7569ab32eea240c850198519e2a765ef Mon Sep 17 00:00:00 2001 From: Bruno Randolf Date: Tue, 16 Nov 2010 10:58:37 +0900 Subject: lib: Add generic exponentially weighted moving average (EWMA) function This adds generic functions for calculating Exponentially Weighted Moving Averages (EWMA). This implementation makes use of a structure which keeps the EWMA parameters and a scaled up internal representation to reduce rounding errors. The original idea for this implementation came from the rt2x00 driver (rt2x00link.c). I would like to use it in several places in the mac80211 and ath5k code and I hope it can be useful in many other places in the kernel code. Signed-off-by: Bruno Randolf Reviewed-by: KOSAKI Motohiro Signed-off-by: John W. Linville --- include/linux/average.h | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 include/linux/average.h (limited to 'include/linux') diff --git a/include/linux/average.h b/include/linux/average.h new file mode 100644 index 000000000000..7706e40f95fa --- /dev/null +++ b/include/linux/average.h @@ -0,0 +1,32 @@ +#ifndef _LINUX_AVERAGE_H +#define _LINUX_AVERAGE_H + +#include + +/* Exponentially weighted moving average (EWMA) */ + +/* For more documentation see lib/average.c */ + +struct ewma { + unsigned long internal; + unsigned long factor; + unsigned long weight; +}; + +extern void ewma_init(struct ewma *avg, unsigned long factor, + unsigned long weight); + +extern struct ewma *ewma_add(struct ewma *avg, unsigned long val); + +/** + * ewma_read() - Get average value + * @avg: Average structure + * + * Returns the average value held in @avg. + */ +static inline unsigned long ewma_read(const struct ewma *avg) +{ + return DIV_ROUND_CLOSEST(avg->internal, avg->factor); +} + +#endif /* _LINUX_AVERAGE_H */ -- cgit v1.2.3 From 86107fd170bc379869250eb7e1bd393a3a70e8ae Mon Sep 17 00:00:00 2001 From: Bruno Randolf Date: Tue, 16 Nov 2010 10:58:48 +0900 Subject: nl80211/mac80211: Report signal average Extend nl80211 to report an exponential weighted moving average (EWMA) of the signal value. Since the signal value usually fluctuates between different packets, an average can be more useful than the value of the last packet. This uses the recently added generic EWMA library function. Signed-off-by: Bruno Randolf Signed-off-by: John W. Linville --- include/linux/nl80211.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index 037b4e498890..1ce3775e9e26 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -1161,6 +1161,7 @@ enum nl80211_rate_info { * @__NL80211_STA_INFO_AFTER_LAST: internal * @NL80211_STA_INFO_MAX: highest possible station info attribute * @NL80211_STA_INFO_SIGNAL: signal strength of last received PPDU (u8, dBm) + * @NL80211_STA_INFO_SIGNAL_AVG: signal strength average (u8, dBm) * @NL80211_STA_INFO_TX_BITRATE: current unicast tx rate, nested attribute * containing info as possible, see &enum nl80211_sta_info_txrate. * @NL80211_STA_INFO_RX_PACKETS: total received packet (u32, from this station) @@ -1178,6 +1179,7 @@ enum nl80211_sta_info { NL80211_STA_INFO_PLID, NL80211_STA_INFO_PLINK_STATE, NL80211_STA_INFO_SIGNAL, + NL80211_STA_INFO_SIGNAL_AVG, NL80211_STA_INFO_TX_BITRATE, NL80211_STA_INFO_RX_PACKETS, NL80211_STA_INFO_TX_PACKETS, -- cgit v1.2.3 From c2f9bff5ace07fbea03a53c6c3253f6c3a81e9f9 Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Tue, 19 Oct 2010 21:04:42 +0800 Subject: net - Add AF_ALG macros This patch adds the socket family/level macros for the yet-to-be-born AF_ALG family. The AF_ALG family provides the user-space interface for the kernel crypto API. Signed-off-by: Herbert Xu Acked-by: David S. Miller --- include/linux/socket.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/socket.h b/include/linux/socket.h index 5146b50202ce..ebc081b18da6 100644 --- a/include/linux/socket.h +++ b/include/linux/socket.h @@ -193,7 +193,8 @@ struct ucred { #define AF_PHONET 35 /* Phonet sockets */ #define AF_IEEE802154 36 /* IEEE802154 sockets */ #define AF_CAIF 37 /* CAIF sockets */ -#define AF_MAX 38 /* For now.. */ +#define AF_ALG 38 /* Algorithm sockets */ +#define AF_MAX 39 /* For now.. */ /* Protocol families, same as address families. */ #define PF_UNSPEC AF_UNSPEC @@ -234,6 +235,7 @@ struct ucred { #define PF_PHONET AF_PHONET #define PF_IEEE802154 AF_IEEE802154 #define PF_CAIF AF_CAIF +#define PF_ALG AF_ALG #define PF_MAX AF_MAX /* Maximum queue length specifiable by listen. */ @@ -307,6 +309,7 @@ struct ucred { #define SOL_RDS 276 #define SOL_IUCV 277 #define SOL_CAIF 278 +#define SOL_ALG 279 /* IPX options */ #define IPX_TYPE 1 -- cgit v1.2.3 From 03c8efc1ffeb6b82a22c1af8dd908af349563314 Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Tue, 19 Oct 2010 21:12:39 +0800 Subject: crypto: af_alg - User-space interface for Crypto API This patch creates the backbone of the user-space interface for the Crypto API, through a new socket family AF_ALG. Each session corresponds to one or more connections obtained from that socket. The number depends on the number of inputs/outputs of that particular type of operation. For most types there will be a s ingle connection/file descriptor that is used for both input and output. AEAD is one of the few that require two inputs. Each algorithm type will provide its own implementation that plugs into af_alg. They're keyed using a string such as "skcipher" or "hash". IOW this patch only contains the boring bits that is required to hold everything together. Thakns to Miloslav Trmac for reviewing this and contributing fixes and improvements. Signed-off-by: Herbert Xu Acked-by: David S. Miller Tested-by: Martin Willi --- include/linux/if_alg.h | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 include/linux/if_alg.h (limited to 'include/linux') diff --git a/include/linux/if_alg.h b/include/linux/if_alg.h new file mode 100644 index 000000000000..0f9acce5b1ff --- /dev/null +++ b/include/linux/if_alg.h @@ -0,0 +1,40 @@ +/* + * if_alg: User-space algorithm interface + * + * Copyright (c) 2010 Herbert Xu + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the Free + * Software Foundation; either version 2 of the License, or (at your option) + * any later version. + * + */ + +#ifndef _LINUX_IF_ALG_H +#define _LINUX_IF_ALG_H + +#include + +struct sockaddr_alg { + __u16 salg_family; + __u8 salg_type[14]; + __u32 salg_feat; + __u32 salg_mask; + __u8 salg_name[64]; +}; + +struct af_alg_iv { + __u32 ivlen; + __u8 iv[0]; +}; + +/* Socket options */ +#define ALG_SET_KEY 1 +#define ALG_SET_IV 2 +#define ALG_SET_OP 3 + +/* Operations */ +#define ALG_OP_DECRYPT 0 +#define ALG_OP_ENCRYPT 1 + +#endif /* _LINUX_IF_ALG_H */ -- cgit v1.2.3 From 042957801626465492b9428860de39a3cb2a8219 Mon Sep 17 00:00:00 2001 From: Steven Rostedt Date: Fri, 12 Nov 2010 22:32:11 -0500 Subject: tracing/events: Show real number in array fields Currently we have in something like the sched_switch event: field:char prev_comm[TASK_COMM_LEN]; offset:12; size:16; signed:1; When a userspace tool such as perf tries to parse this, the TASK_COMM_LEN is meaningless. This is done because the TRACE_EVENT() macro simply uses a #len to show the string of the length. When the length is an enum, we get a string that means nothing for tools. By adding a static buffer and a mutex to protect it, we can store the string into that buffer with snprintf and show the actual number. Now we get: field:char prev_comm[16]; offset:12; size:16; signed:1; Something much more useful. Signed-off-by: Steven Rostedt --- include/linux/ftrace_event.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ftrace_event.h b/include/linux/ftrace_event.h index 725bf6bd39f7..47e3997f7b5c 100644 --- a/include/linux/ftrace_event.h +++ b/include/linux/ftrace_event.h @@ -225,6 +225,10 @@ enum { FILTER_PTR_STRING, }; +#define EVENT_STORAGE_SIZE 128 +extern struct mutex event_storage_mutex; +extern char event_storage[EVENT_STORAGE_SIZE]; + extern int trace_event_raw_init(struct ftrace_event_call *call); extern int trace_define_field(struct ftrace_event_call *call, const char *type, const char *name, int offset, int size, -- cgit v1.2.3 From 93aaae2e01e57483256b7da05c9a7ebd65ad4686 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Fri, 19 Nov 2010 09:49:59 -0800 Subject: filter: optimize sk_run_filter Remove pc variable to avoid arithmetic to compute fentry at each filter instruction. Jumps directly manipulate fentry pointer. As the last instruction of filter[] is guaranteed to be a RETURN, and all jumps are before the last instruction, we dont need to check filter bounds (number of instructions in filter array) at each iteration, so we remove it from sk_run_filter() params. On x86_32 remove f_k var introduced in commit 57fe93b374a6b871 (filter: make sure filters dont read uninitialized memory) Note : We could use a CONFIG_ARCH_HAS_{FEW|MANY}_REGISTERS in order to avoid too many ifdefs in this code. This helps compiler to use cpu registers to hold fentry and A accumulator. On x86_32, this saves 401 bytes, and more important, sk_run_filter() runs much faster because less register pressure (One less conditional branch per BPF instruction) # size net/core/filter.o net/core/filter_pre.o text data bss dec hex filename 2948 0 0 2948 b84 net/core/filter.o 3349 0 0 3349 d15 net/core/filter_pre.o on x86_64 : # size net/core/filter.o net/core/filter_pre.o text data bss dec hex filename 5173 0 0 5173 1435 net/core/filter.o 5224 0 0 5224 1468 net/core/filter_pre.o Signed-off-by: Eric Dumazet Acked-by: Changli Gao Signed-off-by: David S. Miller --- include/linux/filter.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/filter.h b/include/linux/filter.h index 151f5d703b7e..447a775878fb 100644 --- a/include/linux/filter.h +++ b/include/linux/filter.h @@ -147,7 +147,7 @@ struct sock; extern int sk_filter(struct sock *sk, struct sk_buff *skb); extern unsigned int sk_run_filter(struct sk_buff *skb, - struct sock_filter *filter, int flen); + const struct sock_filter *filter); extern int sk_attach_filter(struct sock_fprog *fprog, struct sock *sk); extern int sk_detach_filter(struct sock *sk); extern int sk_chk_filter(struct sock_filter *filter, int flen); -- cgit v1.2.3 From ecf7ace9a8450303a987aa8364e53860cd50e554 Mon Sep 17 00:00:00 2001 From: Thomas Hellstrom Date: Tue, 16 Nov 2010 15:21:07 +0100 Subject: kref: Add a kref_sub function Makes it possible to optimize batched multiple unrefs. Initial user will be drivers/gpu/ttm which accumulates unrefs to be processed outside of atomic code. Signed-off-by: Thomas Hellstrom Signed-off-by: Dave Airlie --- include/linux/kref.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/kref.h b/include/linux/kref.h index 6cc38fc07ab7..d4a62ab2ee5e 100644 --- a/include/linux/kref.h +++ b/include/linux/kref.h @@ -24,5 +24,7 @@ struct kref { void kref_init(struct kref *kref); void kref_get(struct kref *kref); int kref_put(struct kref *kref, void (*release) (struct kref *kref)); +int kref_sub(struct kref *kref, unsigned int count, + void (*release) (struct kref *kref)); #endif /* _KREF_H_ */ -- cgit v1.2.3 From eb06acdc85585f28864261f28659157848762ee4 Mon Sep 17 00:00:00 2001 From: Sridhar Samudrala Date: Thu, 28 Oct 2010 13:10:50 +0000 Subject: macvlan: Introduce 'passthru' mode to takeover the underlying device With the current default 'vepa' mode, a KVM guest using virtio with macvtap backend has the following limitations. - cannot change/add a mac address on the guest virtio-net - cannot create a vlan device on the guest virtio-net - cannot enable promiscuous mode on guest virtio-net To address these limitations, this patch introduces a new mode called 'passthru' when creating a macvlan device which allows takeover of the underlying device and passing it to a guest using virtio with macvtap backend. Only one macvlan device is allowed in passthru mode and it inherits the mac address from the underlying device and sets it in promiscuous mode to receive and forward all the packets. Signed-off-by: Sridhar Samudrala ------------------------------------------------------------------------- Signed-off-by: David S. Miller --- include/linux/if_link.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/if_link.h b/include/linux/if_link.h index 2e02e4d7b11e..6485d2a89bec 100644 --- a/include/linux/if_link.h +++ b/include/linux/if_link.h @@ -259,6 +259,7 @@ enum macvlan_mode { MACVLAN_MODE_PRIVATE = 1, /* don't talk to other macvlans */ MACVLAN_MODE_VEPA = 2, /* talk to other ports through ext bridge */ MACVLAN_MODE_BRIDGE = 4, /* talk to bridge ports directly */ + MACVLAN_MODE_PASSTHRU = 8,/* take over the underlying device */ }; /* SR-IOV virtual function management section */ -- cgit v1.2.3 From 23ed992a5ebe6964ebe312b54142fbc5e8185cdc Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Fri, 5 Nov 2010 18:04:52 +0100 Subject: drm/i915|intel-gtt: consolidate intel-gtt.h headers ... and a few other defines. Signed-off-by: Daniel Vetter Signed-off-by: Chris Wilson --- include/linux/intel-gtt.h | 20 -------------------- 1 file changed, 20 deletions(-) delete mode 100644 include/linux/intel-gtt.h (limited to 'include/linux') diff --git a/include/linux/intel-gtt.h b/include/linux/intel-gtt.h deleted file mode 100644 index 1d19ab2afa39..000000000000 --- a/include/linux/intel-gtt.h +++ /dev/null @@ -1,20 +0,0 @@ -/* - * Common Intel AGPGART and GTT definitions. - */ -#ifndef _INTEL_GTT_H -#define _INTEL_GTT_H - -#include - -/* This is for Intel only GTT controls. - * - * Sandybridge: AGP_USER_CACHED_MEMORY default to LLC only - */ - -#define AGP_USER_CACHED_MEMORY_LLC_MLC (AGP_USER_TYPES + 2) -#define AGP_USER_UNCACHED_MEMORY (AGP_USER_TYPES + 4) - -/* flag for GFDT type */ -#define AGP_USER_CACHED_MEMORY_GFDT (1 << 3) - -#endif -- cgit v1.2.3 From f050a8abbda0efcd597c6b1825e3b9ce4d613383 Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Fri, 5 Nov 2010 18:40:56 +0100 Subject: agp: kill agp_flush_chipset and corresponding ioctl The intel drm calls the chipset functions now directly. Userspace never called the corresponding ioctl, hence it can be killed, too. Cc: Dave Airlie Signed-off-by: Daniel Vetter Signed-off-by: Chris Wilson --- include/linux/agp_backend.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/agp_backend.h b/include/linux/agp_backend.h index 09ea4a1e9505..a479b4885d25 100644 --- a/include/linux/agp_backend.h +++ b/include/linux/agp_backend.h @@ -106,6 +106,5 @@ extern int agp_rebind_memory(void); extern void agp_enable(struct agp_bridge_data *, u32); extern struct agp_bridge_data *agp_backend_acquire(struct pci_dev *); extern void agp_backend_release(struct agp_bridge_data *); -extern void agp_flush_chipset(struct agp_bridge_data *); #endif /* _AGP_BACKEND_H */ -- cgit v1.2.3 From cb16b67b5cb33b7d6732e0c416d29d933eea13ce Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Fri, 5 Nov 2010 22:27:10 +0100 Subject: agp: kill agp_rebind_memory Its only user, intel-gtt.c is now gone. Cc: Dave Airlie Signed-off-by: Daniel Vetter Signed-off-by: Chris Wilson --- include/linux/agp_backend.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/agp_backend.h b/include/linux/agp_backend.h index a479b4885d25..eaf6cd75a1b1 100644 --- a/include/linux/agp_backend.h +++ b/include/linux/agp_backend.h @@ -102,7 +102,6 @@ extern struct agp_memory *agp_allocate_memory(struct agp_bridge_data *, size_t, extern int agp_copy_info(struct agp_bridge_data *, struct agp_kern_info *); extern int agp_bind_memory(struct agp_memory *, off_t); extern int agp_unbind_memory(struct agp_memory *); -extern int agp_rebind_memory(void); extern void agp_enable(struct agp_bridge_data *, u32); extern struct agp_bridge_data *agp_backend_acquire(struct pci_dev *); extern void agp_backend_release(struct agp_bridge_data *); -- cgit v1.2.3 From 293bb1c41b728d4aa248fe8a0acd2b9066ff5c34 Mon Sep 17 00:00:00 2001 From: Giuseppe CAVALLARO Date: Wed, 24 Nov 2010 02:38:05 +0000 Subject: stmmac: add init/exit callback in plat_stmmacenet_data struct This patch adds in the plat_stmmacenet_data the init and exit callbacks that can be used for invoking specific platform functions. For example, on ST targets, these call the PAD manager functions to set PIO lines and syscfg registers. The patch removes the stmmac_claim_resource only used on STM Kernels as well. Signed-off-by: Giuseppe Cavallaro Signed-off-by: David S. Miller --- include/linux/stmmac.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/stmmac.h b/include/linux/stmmac.h index d66c61774d95..e10352915698 100644 --- a/include/linux/stmmac.h +++ b/include/linux/stmmac.h @@ -40,9 +40,9 @@ struct plat_stmmacenet_data { int pmt; void (*fix_mac_speed)(void *priv, unsigned int speed); void (*bus_setup)(void __iomem *ioaddr); -#ifdef CONFIG_STM_DRIVERS - struct stm_pad_config *pad_config; -#endif + int (*init)(struct platform_device *pdev); + void (*exit)(struct platform_device *pdev); + void *custom_cfg; void *bsp_priv; }; -- cgit v1.2.3 From 456b61bca8ee324ab6c18b065e632c9a8c88aa39 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Tue, 23 Nov 2010 13:12:15 +0000 Subject: ipv6: mcast: RCU conversion ipv6_sk_mc_lock rwlock becomes a spinlock. readers (inet6_mc_check()) now takes rcu_read_lock() instead of read lock. Writers dont need to disable BH anymore. struct ipv6_mc_socklist objects are reclaimed after one RCU grace period. Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- include/linux/ipv6.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h index 8e429d0e0405..0c997767429a 100644 --- a/include/linux/ipv6.h +++ b/include/linux/ipv6.h @@ -364,7 +364,7 @@ struct ipv6_pinfo { __u32 dst_cookie; - struct ipv6_mc_socklist *ipv6_mc_list; + struct ipv6_mc_socklist __rcu *ipv6_mc_list; struct ipv6_ac_socklist *ipv6_ac_list; struct ipv6_fl_socklist *ipv6_fl_list; -- cgit v1.2.3 From 3853b5841c01a3f492fe137afaad9c209e5162c6 Mon Sep 17 00:00:00 2001 From: Tom Herbert Date: Sun, 21 Nov 2010 13:17:29 +0000 Subject: xps: Improvements in TX queue selection In dev_pick_tx, don't do work in calculating queue index or setting the index in the sock unless the device has more than one queue. This allows the sock to be set only with a queue index of a multi-queue device which is desirable if device are stacked like in a tunnel. We also allow the mapping of a socket to queue to be changed. To maintain in order packet transmission a flag (ooo_okay) has been added to the sk_buff structure. If a transport layer sets this flag on a packet, the transmit queue can be changed for the socket. Presumably, the transport would set this if there was no possbility of creating OOO packets (for instance, there are no packets in flight for the socket). This patch includes the modification in TCP output for setting this flag. Signed-off-by: Tom Herbert Signed-off-by: David S. Miller --- include/linux/skbuff.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index e6ba898de61c..19f37a6ee6c4 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -386,9 +386,10 @@ struct sk_buff { #else __u8 deliver_no_wcard:1; #endif + __u8 ooo_okay:1; kmemcheck_bitfield_end(flags2); - /* 0/14 bit hole */ + /* 0/13 bit hole */ #ifdef CONFIG_NET_DMA dma_cookie_t dma_cookie; -- cgit v1.2.3 From 1d24eb4815d1e0e8b451ecc546645f8ef1176d4f Mon Sep 17 00:00:00 2001 From: Tom Herbert Date: Sun, 21 Nov 2010 13:17:27 +0000 Subject: xps: Transmit Packet Steering This patch implements transmit packet steering (XPS) for multiqueue devices. XPS selects a transmit queue during packet transmission based on configuration. This is done by mapping the CPU transmitting the packet to a queue. This is the transmit side analogue to RPS-- where RPS is selecting a CPU based on receive queue, XPS selects a queue based on the CPU (previously there was an XPS patch from Eric Dumazet, but that might more appropriately be called transmit completion steering). Each transmit queue can be associated with a number of CPUs which will use the queue to send packets. This is configured as a CPU mask on a per queue basis in: /sys/class/net/eth/queues/tx-/xps_cpus The mappings are stored per device in an inverted data structure that maps CPUs to queues. In the netdevice structure this is an array of num_possible_cpu structures where each structure holds and array of queue_indexes for queues which that CPU can use. The benefits of XPS are improved locality in the per queue data structures. Also, transmit completions are more likely to be done nearer to the sending thread, so this should promote locality back to the socket on free (e.g. UDP). The benefits of XPS are dependent on cache hierarchy, application load, and other factors. XPS would nominally be configured so that a queue would only be shared by CPUs which are sharing a cache, the degenerative configuration woud be that each CPU has it's own queue. Below are some benchmark results which show the potential benfit of this patch. The netperf test has 500 instances of netperf TCP_RR test with 1 byte req. and resp. bnx2x on 16 core AMD XPS (16 queues, 1 TX queue per CPU) 1234K at 100% CPU No XPS (16 queues) 996K at 100% CPU Signed-off-by: Tom Herbert Signed-off-by: David S. Miller --- include/linux/netdevice.h | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index b45c1b8b1d19..badf9285fe0d 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -503,6 +503,10 @@ struct netdev_queue { struct Qdisc *qdisc; unsigned long state; struct Qdisc *qdisc_sleeping; +#ifdef CONFIG_RPS + struct kobject kobj; +#endif + /* * write mostly part */ @@ -529,6 +533,30 @@ struct rps_map { }; #define RPS_MAP_SIZE(_num) (sizeof(struct rps_map) + (_num * sizeof(u16))) +/* + * This structure holds an XPS map which can be of variable length. The + * map is an array of queues. + */ +struct xps_map { + unsigned int len; + unsigned int alloc_len; + struct rcu_head rcu; + u16 queues[0]; +}; +#define XPS_MAP_SIZE(_num) (sizeof(struct xps_map) + (_num * sizeof(u16))) +#define XPS_MIN_MAP_ALLOC ((L1_CACHE_BYTES - sizeof(struct xps_map)) \ + / sizeof(u16)) + +/* + * This structure holds all XPS maps for device. Maps are indexed by CPU. + */ +struct xps_dev_maps { + struct rcu_head rcu; + struct xps_map *cpu_map[0]; +}; +#define XPS_DEV_MAPS_SIZE (sizeof(struct xps_dev_maps) + \ + (nr_cpu_ids * sizeof(struct xps_map *))) + /* * The rps_dev_flow structure contains the mapping of a flow to a CPU and the * tail pointer for that CPU's input queue at the time of last enqueue. @@ -1016,6 +1044,8 @@ struct net_device { unsigned long tx_queue_len; /* Max frames per queue allowed */ spinlock_t tx_global_lock; + struct xps_dev_maps *xps_maps; + /* These may be needed for future network-power-down code. */ /* -- cgit v1.2.3 From ccb14354017272ddac002e859a2711610b6af174 Mon Sep 17 00:00:00 2001 From: "John W. Linville" Date: Wed, 24 Nov 2010 16:18:36 -0500 Subject: Revert "nl80211/mac80211: Report signal average" This reverts commit 86107fd170bc379869250eb7e1bd393a3a70e8ae. This patch inadvertantly changed the userland ABI. Signed-off-by: John W. Linville --- include/linux/nl80211.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index 1ce3775e9e26..037b4e498890 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -1161,7 +1161,6 @@ enum nl80211_rate_info { * @__NL80211_STA_INFO_AFTER_LAST: internal * @NL80211_STA_INFO_MAX: highest possible station info attribute * @NL80211_STA_INFO_SIGNAL: signal strength of last received PPDU (u8, dBm) - * @NL80211_STA_INFO_SIGNAL_AVG: signal strength average (u8, dBm) * @NL80211_STA_INFO_TX_BITRATE: current unicast tx rate, nested attribute * containing info as possible, see &enum nl80211_sta_info_txrate. * @NL80211_STA_INFO_RX_PACKETS: total received packet (u32, from this station) @@ -1179,7 +1178,6 @@ enum nl80211_sta_info { NL80211_STA_INFO_PLID, NL80211_STA_INFO_PLINK_STATE, NL80211_STA_INFO_SIGNAL, - NL80211_STA_INFO_SIGNAL_AVG, NL80211_STA_INFO_TX_BITRATE, NL80211_STA_INFO_RX_PACKETS, NL80211_STA_INFO_TX_PACKETS, -- cgit v1.2.3 From c063dbf52b998b852122dff07a8b8dd430b38437 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Wed, 24 Nov 2010 08:10:05 +0100 Subject: cfg80211: allow using CQM event to notify packet loss This adds the ability for drivers to use CQM events to notify about packet loss for specific stations (which could be the AP for the managed mode case). Since the threshold might be determined by the driver (it isn't passed in right now) it will be passed out of the driver to userspace in the event. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- include/linux/nl80211.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index 037b4e498890..d706bf3badc8 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -1819,6 +1819,8 @@ enum nl80211_ps_state { * the minimum amount the RSSI level must change after an event before a * new event may be issued (to reduce effects of RSSI oscillation). * @NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT: RSSI threshold event + * @NL80211_ATTR_CQM_PKT_LOSS_EVENT: a u32 value indicating that this many + * consecutive packets were not acknowledged by the peer * @__NL80211_ATTR_CQM_AFTER_LAST: internal * @NL80211_ATTR_CQM_MAX: highest key attribute */ @@ -1827,6 +1829,7 @@ enum nl80211_attr_cqm { NL80211_ATTR_CQM_RSSI_THOLD, NL80211_ATTR_CQM_RSSI_HYST, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT, + NL80211_ATTR_CQM_PKT_LOSS_EVENT, /* keep last */ __NL80211_ATTR_CQM_AFTER_LAST, -- cgit v1.2.3 From fe5e7a1efb664df0280f10377813d7099fb7eb0f Mon Sep 17 00:00:00 2001 From: Hans Schillstrom Date: Fri, 19 Nov 2010 14:25:12 +0100 Subject: IPVS: Backup, Adding Version 1 receive capability Functionality improvements * flags changed from 16 to 32 bits * fwmark added (32 bits) * timeout in sec. added (32 bits) * pe data added (Variable length) * IPv6 capabilities (3x16 bytes for addr.) * Version and type in every conn msg. ip_vs_process_message() now handles Version 1 messages and will call ip_vs_process_message_v0() for version 0 messages. ip_vs_proc_conn() is common for both version, and handles the update of connection hash. ip_vs_conn_fill_param_sync() - Version 1 messages only ip_vs_conn_fill_param_sync_v0() - Version 0 messages only Signed-off-by: Hans Schillstrom Acked-by: Julian Anastasov Signed-off-by: Simon Horman --- include/linux/ip_vs.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ip_vs.h b/include/linux/ip_vs.h index 5f43a3b2e3ad..4deb3834d62c 100644 --- a/include/linux/ip_vs.h +++ b/include/linux/ip_vs.h @@ -89,6 +89,14 @@ #define IP_VS_CONN_F_TEMPLATE 0x1000 /* template, not connection */ #define IP_VS_CONN_F_ONE_PACKET 0x2000 /* forward only one packet */ +#define IP_VS_CONN_F_BACKUP_MASK (IP_VS_CONN_F_FWD_MASK | \ + IP_VS_CONN_F_NOOUTPUT | \ + IP_VS_CONN_F_INACTIVE | \ + IP_VS_CONN_F_SEQ_MASK | \ + IP_VS_CONN_F_NO_CPORT | \ + IP_VS_CONN_F_TEMPLATE \ + ) + /* Flags that are not sent to backup server start from bit 16 */ #define IP_VS_CONN_F_NFCT (1 << 16) /* use netfilter conntrack */ -- cgit v1.2.3 From a782d688e9c6f9ca9a7a9a28e8e2876969ddef53 Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Wed, 24 Nov 2010 10:05:22 +0000 Subject: mmc: sh_mmcif: add DMA support The MMCIF controller on sh-mobile platforms can use the DMA controller for data transfers. Interface to the SH dmaengine driver to enable DMA. We also have to lower the maximum number of segments to match with the number od DMA descriptors on SuperH, this doesn't significantly affect driver's PIO performance. Signed-off-by: Guennadi Liakhovetski Signed-off-by: Paul Mundt --- include/linux/mmc/sh_mmcif.h | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mmc/sh_mmcif.h b/include/linux/mmc/sh_mmcif.h index a6bfa5296495..f216a8879b58 100644 --- a/include/linux/mmc/sh_mmcif.h +++ b/include/linux/mmc/sh_mmcif.h @@ -14,8 +14,9 @@ #ifndef __SH_MMCIF_H__ #define __SH_MMCIF_H__ -#include #include +#include +#include /* * MMCIF : CE_CLK_CTRL [19:16] @@ -31,13 +32,19 @@ * 1111 : Peripheral clock (sup_pclk set '1') */ +struct sh_mmcif_dma { + struct sh_dmae_slave chan_priv_tx; + struct sh_dmae_slave chan_priv_rx; +}; + struct sh_mmcif_plat_data { void (*set_pwr)(struct platform_device *pdev, int state); void (*down_pwr)(struct platform_device *pdev); int (*get_cd)(struct platform_device *pdef); - u8 sup_pclk; /* 1 :SH7757, 0: SH7724/SH7372 */ - unsigned long caps; - u32 ocr; + struct sh_mmcif_dma *dma; + u8 sup_pclk; /* 1 :SH7757, 0: SH7724/SH7372 */ + unsigned long caps; + u32 ocr; }; #define MMCIF_CE_CMD_SET 0x00000000 -- cgit v1.2.3 From 6d803ba736abb5e122dede70a4720e4843dd6df4 Mon Sep 17 00:00:00 2001 From: Jean-Christop PLAGNIOL-VILLARD Date: Wed, 17 Nov 2010 10:04:33 +0100 Subject: ARM: 6483/1: arm & sh: factorised duplicated clkdev.c factorise some generic infrastructure to assist looking up struct clks for the ARM & SH architecture. as the code is identical at 99% put the arch specific code for allocation as example in asm/clkdev.h Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD Acked-by: Paul Mundt Signed-off-by: Russell King --- include/linux/clkdev.h | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 include/linux/clkdev.h (limited to 'include/linux') diff --git a/include/linux/clkdev.h b/include/linux/clkdev.h new file mode 100644 index 000000000000..457bcb0a310a --- /dev/null +++ b/include/linux/clkdev.h @@ -0,0 +1,36 @@ +/* + * include/linux/clkdev.h + * + * Copyright (C) 2008 Russell King. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * Helper for the clk API to assist looking up a struct clk. + */ +#ifndef __CLKDEV_H +#define __CLKDEV_H + +#include + +struct clk; +struct device; + +struct clk_lookup { + struct list_head node; + const char *dev_id; + const char *con_id; + struct clk *clk; +}; + +struct clk_lookup *clkdev_alloc(struct clk *clk, const char *con_id, + const char *dev_fmt, ...); + +void clkdev_add(struct clk_lookup *cl); +void clkdev_drop(struct clk_lookup *cl); + +void clkdev_add_table(struct clk_lookup *, size_t); +int clk_add_alias(const char *, const char *, char *, struct device *); + +#endif -- cgit v1.2.3 From 65500fa94aaeb3475e39c0c5180f188014164ca4 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Thu, 4 Nov 2010 13:06:59 +0100 Subject: ARM: 6467/1: amba: optional PrimeCell core voltage switch On some contemporary sub-micron SoCs, peripherals on the chip have power domain switches, i.e. the voltage to the core may be turned off to conserve power. In the Ux500 we have this for out PrimeCell derivates. This patch makes it possible to specify an (optional) regulator to handle the voltage domain switch on AMBA PrimeCells, modeled very similar to how block clocks are handled. Additional amba_vcore_[enable|disable] calls are supplied to make it possible introduce optional powering off of the core voltage. Using this will require code to spool/unspool any core HW state. Cc: Rabin Vincent Cc: Bengt Jonsson Cc: Jonas Aaberg Signed-off-by: Linus Walleij Signed-off-by: Russell King --- include/linux/amba/bus.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/linux') diff --git a/include/linux/amba/bus.h b/include/linux/amba/bus.h index c6454cca0447..9e7f259346e1 100644 --- a/include/linux/amba/bus.h +++ b/include/linux/amba/bus.h @@ -18,6 +18,7 @@ #include #include #include +#include #define AMBA_NR_IRQS 2 #define AMBA_CID 0xb105f00d @@ -28,6 +29,7 @@ struct amba_device { struct device dev; struct resource res; struct clk *pclk; + struct regulator *vcore; u64 dma_mask; unsigned int periphid; unsigned int irq[AMBA_NR_IRQS]; @@ -71,6 +73,12 @@ void amba_release_regions(struct amba_device *); #define amba_pclk_disable(d) \ do { if (!IS_ERR((d)->pclk)) clk_disable((d)->pclk); } while (0) +#define amba_vcore_enable(d) \ + (IS_ERR((d)->vcore) ? 0 : regulator_enable((d)->vcore)) + +#define amba_vcore_disable(d) \ + do { if (!IS_ERR((d)->vcore)) regulator_disable((d)->vcore); } while (0) + /* Some drivers don't use the struct amba_device */ #define AMBA_CONFIG_BITS(a) (((a) >> 24) & 0xff) #define AMBA_REV_BITS(a) (((a) >> 20) & 0x0f) -- cgit v1.2.3 From 335d7afbfb71faac833734a94240c1e07cf0ead8 Mon Sep 17 00:00:00 2001 From: Gerald Schaefer Date: Mon, 22 Nov 2010 15:47:36 +0100 Subject: mutexes, sched: Introduce arch_mutex_cpu_relax() The spinning mutex implementation uses cpu_relax() in busy loops as a compiler barrier. Depending on the architecture, cpu_relax() may do more than needed in this specific mutex spin loops. On System z we also give up the time slice of the virtual cpu in cpu_relax(), which prevents effective spinning on the mutex. This patch replaces cpu_relax() in the spinning mutex code with arch_mutex_cpu_relax(), which can be defined by each architecture that selects HAVE_ARCH_MUTEX_CPU_RELAX. The default is still cpu_relax(), so this patch should not affect other architectures than System z for now. Signed-off-by: Gerald Schaefer Signed-off-by: Peter Zijlstra LKML-Reference: <1290437256.7455.4.camel@thinkpad> Signed-off-by: Ingo Molnar --- include/linux/mutex.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mutex.h b/include/linux/mutex.h index f363bc8fdc74..94b48bd40dd7 100644 --- a/include/linux/mutex.h +++ b/include/linux/mutex.h @@ -160,4 +160,8 @@ extern int mutex_trylock(struct mutex *lock); extern void mutex_unlock(struct mutex *lock); extern int atomic_dec_and_mutex_lock(atomic_t *cnt, struct mutex *lock); +#ifndef CONFIG_HAVE_ARCH_MUTEX_CPU_RELAX +#define arch_mutex_cpu_relax() cpu_relax() +#endif + #endif -- cgit v1.2.3 From 6c7e550f13f8ad82efb6a5653ae628c2543c1768 Mon Sep 17 00:00:00 2001 From: Franck Bui-Huu Date: Tue, 23 Nov 2010 16:21:43 +0100 Subject: perf: Introduce is_sampling_event() and use it when appropriate. Signed-off-by: Franck Bui-Huu Signed-off-by: Peter Zijlstra LKML-Reference: <1290525705-6265-1-git-send-email-fbuihuu@gmail.com> Signed-off-by: Ingo Molnar --- include/linux/perf_event.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index de2c41758e29..cbf04cc1e630 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -969,6 +969,11 @@ extern int perf_event_overflow(struct perf_event *event, int nmi, struct perf_sample_data *data, struct pt_regs *regs); +static inline bool is_sampling_event(struct perf_event *event) +{ + return event->attr.sample_period != 0; +} + /* * Return 1 for a software event, 0 for a hardware event */ -- cgit v1.2.3 From 004417a6d468e24399e383645c068b498eed84ad Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Thu, 25 Nov 2010 18:38:29 +0100 Subject: perf, arch: Cleanup perf-pmu init vs lockup-detector The perf hardware pmu got initialized at various points in the boot, some before early_initcall() some after (notably arch_initcall). The problem is that the NMI lockup detector is ran from early_initcall() and expects the hardware pmu to be present. Sanitize this by moving all architecture hardware pmu implementations to initialize at early_initcall() and move the lockup detector to an explicit initcall right after that. Cc: paulus Cc: davem Cc: Michael Cree Cc: Deng-Cheng Zhu Acked-by: Paul Mundt Acked-by: Will Deacon Signed-off-by: Peter Zijlstra LKML-Reference: <1290707759.2145.119.camel@laptop> Signed-off-by: Ingo Molnar --- include/linux/sched.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index 2c79e921a68b..d2e63d1e725c 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -316,6 +316,7 @@ extern int proc_dowatchdog_thresh(struct ctl_table *table, int write, size_t *lenp, loff_t *ppos); extern unsigned int softlockup_panic; extern int softlockup_thresh; +void lockup_detector_init(void); #else static inline void touch_softlockup_watchdog(void) { @@ -326,6 +327,9 @@ static inline void touch_softlockup_watchdog_sync(void) static inline void touch_all_softlockup_watchdogs(void) { } +static inline void lockup_detector_init(void) +{ +} #endif #ifdef CONFIG_DETECT_HUNG_TASK -- cgit v1.2.3 From 559e0df6b3ffbc218a11bb9dada5320a217cb7a6 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Tue, 31 Aug 2010 19:25:12 +0100 Subject: mfd: Add initial WM8958 support The WM8958 is a derivative of the WM8994 which is register compatible with the addition of some extra features, mostly in the CODEC side. The major change visible at the MFD level is that rather than a single DBVDD supply we now have three separate DBVDDs so we must request and enable a different set of supplies. Signed-off-by: Mark Brown Acked-by: Samuel Ortiz Acked-by: Liam Girdwood --- include/linux/mfd/wm8994/core.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/wm8994/core.h b/include/linux/mfd/wm8994/core.h index de79baee4925..3fd36845ca45 100644 --- a/include/linux/mfd/wm8994/core.h +++ b/include/linux/mfd/wm8994/core.h @@ -17,6 +17,11 @@ #include +enum wm8994_type { + WM8994 = 0, + WM8958 = 1, +}; + struct regulator_dev; struct regulator_bulk_data; @@ -48,6 +53,8 @@ struct wm8994 { struct mutex io_lock; struct mutex irq_lock; + enum wm8994_type type; + struct device *dev; int (*read_dev)(struct wm8994 *wm8994, unsigned short reg, int bytes, void *dest); @@ -68,6 +75,7 @@ struct wm8994 { u16 gpio_regs[WM8994_NUM_GPIO_REGS]; struct regulator_dev *dbvdd; + int num_supplies; struct regulator_bulk_data *supplies; }; -- cgit v1.2.3 From c4431df050ff124cae7716e301cead1e8f33c575 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Fri, 26 Nov 2010 15:21:07 +0000 Subject: ASoC: Implement support for enhanced AIF3 on WM8958 Additional audio routing options are available on the WM8958 audio interface 3. Add support for these. Signed-off-by: Mark Brown Acked-by: Liam Girdwood --- include/linux/mfd/wm8994/registers.h | 67 ++++++++++++++++++++++++++++++++++++ 1 file changed, 67 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/wm8994/registers.h b/include/linux/mfd/wm8994/registers.h index 967f62f54159..3eb70a4e7681 100644 --- a/include/linux/mfd/wm8994/registers.h +++ b/include/linux/mfd/wm8994/registers.h @@ -109,6 +109,10 @@ #define WM8994_AIF2DAC_LRCLK 0x315 #define WM8994_AIF2DAC_DATA 0x316 #define WM8994_AIF2ADC_DATA 0x317 +#define WM8958_AIF3_CONTROL_1 0x320 +#define WM8958_AIF3_CONTROL_2 0x321 +#define WM8958_AIF3DAC_DATA 0x322 +#define WM8958_AIF3ADC_DATA 0x323 #define WM8994_AIF1_ADC1_LEFT_VOLUME 0x400 #define WM8994_AIF1_ADC1_RIGHT_VOLUME 0x401 #define WM8994_AIF1_DAC1_LEFT_VOLUME 0x402 @@ -992,6 +996,12 @@ /* * R6 (0x06) - Power Management (6) */ +#define WM8958_AIF3ADC_SRC_MASK 0x0600 /* AIF3ADC_SRC - [10:9] */ +#define WM8958_AIF3ADC_SRC_SHIFT 9 /* AIF3ADC_SRC - [10:9] */ +#define WM8958_AIF3ADC_SRC_WIDTH 2 /* AIF3ADC_SRC - [10:9] */ +#define WM8958_AIF2DAC_SRC_MASK 0x0180 /* AIF2DAC_SRC - [8:7] */ +#define WM8958_AIF2DAC_SRC_SHIFT 7 /* AIF2DAC_SRC - [8:7] */ +#define WM8958_AIF2DAC_SRC_WIDTH 2 /* AIF2DAC_SRC - [8:7] */ #define WM8994_AIF3_TRI 0x0020 /* AIF3_TRI */ #define WM8994_AIF3_TRI_MASK 0x0020 /* AIF3_TRI */ #define WM8994_AIF3_TRI_SHIFT 5 /* AIF3_TRI */ @@ -2552,6 +2562,63 @@ #define WM8994_AIF2ADCR_DAT_INV_SHIFT 0 /* AIF2ADCR_DAT_INV */ #define WM8994_AIF2ADCR_DAT_INV_WIDTH 1 /* AIF2ADCR_DAT_INV */ +/* + * R800 (0x320) - AIF3 Control (1) + */ +#define WM8958_AIF3_LRCLK_INV 0x0080 /* AIF3_LRCLK_INV */ +#define WM8958_AIF3_LRCLK_INV_MASK 0x0080 /* AIF3_LRCLK_INV */ +#define WM8958_AIF3_LRCLK_INV_SHIFT 7 /* AIF3_LRCLK_INV */ +#define WM8958_AIF3_LRCLK_INV_WIDTH 1 /* AIF3_LRCLK_INV */ +#define WM8958_AIF3_WL_MASK 0x0060 /* AIF3_WL - [6:5] */ +#define WM8958_AIF3_WL_SHIFT 5 /* AIF3_WL - [6:5] */ +#define WM8958_AIF3_WL_WIDTH 2 /* AIF3_WL - [6:5] */ +#define WM8958_AIF3_FMT_MASK 0x0018 /* AIF3_FMT - [4:3] */ +#define WM8958_AIF3_FMT_SHIFT 3 /* AIF3_FMT - [4:3] */ +#define WM8958_AIF3_FMT_WIDTH 2 /* AIF3_FMT - [4:3] */ + +/* + * R801 (0x321) - AIF3 Control (2) + */ +#define WM8958_AIF3DAC_BOOST_MASK 0x0C00 /* AIF3DAC_BOOST - [11:10] */ +#define WM8958_AIF3DAC_BOOST_SHIFT 10 /* AIF3DAC_BOOST - [11:10] */ +#define WM8958_AIF3DAC_BOOST_WIDTH 2 /* AIF3DAC_BOOST - [11:10] */ +#define WM8958_AIF3DAC_COMP 0x0010 /* AIF3DAC_COMP */ +#define WM8958_AIF3DAC_COMP_MASK 0x0010 /* AIF3DAC_COMP */ +#define WM8958_AIF3DAC_COMP_SHIFT 4 /* AIF3DAC_COMP */ +#define WM8958_AIF3DAC_COMP_WIDTH 1 /* AIF3DAC_COMP */ +#define WM8958_AIF3DAC_COMPMODE 0x0008 /* AIF3DAC_COMPMODE */ +#define WM8958_AIF3DAC_COMPMODE_MASK 0x0008 /* AIF3DAC_COMPMODE */ +#define WM8958_AIF3DAC_COMPMODE_SHIFT 3 /* AIF3DAC_COMPMODE */ +#define WM8958_AIF3DAC_COMPMODE_WIDTH 1 /* AIF3DAC_COMPMODE */ +#define WM8958_AIF3ADC_COMP 0x0004 /* AIF3ADC_COMP */ +#define WM8958_AIF3ADC_COMP_MASK 0x0004 /* AIF3ADC_COMP */ +#define WM8958_AIF3ADC_COMP_SHIFT 2 /* AIF3ADC_COMP */ +#define WM8958_AIF3ADC_COMP_WIDTH 1 /* AIF3ADC_COMP */ +#define WM8958_AIF3ADC_COMPMODE 0x0002 /* AIF3ADC_COMPMODE */ +#define WM8958_AIF3ADC_COMPMODE_MASK 0x0002 /* AIF3ADC_COMPMODE */ +#define WM8958_AIF3ADC_COMPMODE_SHIFT 1 /* AIF3ADC_COMPMODE */ +#define WM8958_AIF3ADC_COMPMODE_WIDTH 1 /* AIF3ADC_COMPMODE */ +#define WM8958_AIF3_LOOPBACK 0x0001 /* AIF3_LOOPBACK */ +#define WM8958_AIF3_LOOPBACK_MASK 0x0001 /* AIF3_LOOPBACK */ +#define WM8958_AIF3_LOOPBACK_SHIFT 0 /* AIF3_LOOPBACK */ +#define WM8958_AIF3_LOOPBACK_WIDTH 1 /* AIF3_LOOPBACK */ + +/* + * R802 (0x322) - AIF3DAC Data + */ +#define WM8958_AIF3DAC_DAT_INV 0x0001 /* AIF3DAC_DAT_INV */ +#define WM8958_AIF3DAC_DAT_INV_MASK 0x0001 /* AIF3DAC_DAT_INV */ +#define WM8958_AIF3DAC_DAT_INV_SHIFT 0 /* AIF3DAC_DAT_INV */ +#define WM8958_AIF3DAC_DAT_INV_WIDTH 1 /* AIF3DAC_DAT_INV */ + +/* + * R803 (0x323) - AIF3ADC Data + */ +#define WM8958_AIF3ADC_DAT_INV 0x0001 /* AIF3ADC_DAT_INV */ +#define WM8958_AIF3ADC_DAT_INV_MASK 0x0001 /* AIF3ADC_DAT_INV */ +#define WM8958_AIF3ADC_DAT_INV_SHIFT 0 /* AIF3ADC_DAT_INV */ +#define WM8958_AIF3ADC_DAT_INV_WIDTH 1 /* AIF3ADC_DAT_INV */ + /* * R1024 (0x400) - AIF1 ADC1 Left Volume */ -- cgit v1.2.3 From d6addcc9d88aeac4a0cc63a06d36baef04f5dc3b Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Fri, 26 Nov 2010 15:21:08 +0000 Subject: ASoC: Add WM8958 Multi-band compressor support The WM8958 features a multi-band compressor which can be enabled on any of the AIF inputs. The MBC allows different gains to be applied to differnt audio bands, providing an improvement in perceived loudness of the signal by avoiding overdriving the output transducers. This patch enables support for the MBC. Signed-off-by: Mark Brown Acked-by: Liam Girdwood --- include/linux/mfd/wm8994/registers.h | 115 +++++++++++++++++++++++++++++++++++ 1 file changed, 115 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/wm8994/registers.h b/include/linux/mfd/wm8994/registers.h index 3eb70a4e7681..423b2b5c94ea 100644 --- a/include/linux/mfd/wm8994/registers.h +++ b/include/linux/mfd/wm8994/registers.h @@ -246,6 +246,15 @@ #define WM8994_INTERRUPT_STATUS_2_MASK 0x739 #define WM8994_INTERRUPT_CONTROL 0x740 #define WM8994_IRQ_DEBOUNCE 0x748 +#define WM8958_DSP2_PROGRAM 0x900 +#define WM8958_DSP2_CONFIG 0x901 +#define WM8958_DSP2_MAGICNUM 0xA00 +#define WM8958_DSP2_RELEASEYEAR 0xA01 +#define WM8958_DSP2_RELEASEMONTHDAY 0xA02 +#define WM8958_DSP2_RELEASETIME 0xA03 +#define WM8958_DSP2_VERMAJMIN 0xA04 +#define WM8958_DSP2_VERBUILD 0xA05 +#define WM8958_DSP2_EXECCONTROL 0xA0D #define WM8994_WRITE_SEQUENCER_0 0x3000 #define WM8994_WRITE_SEQUENCER_1 0x3001 #define WM8994_WRITE_SEQUENCER_2 0x3002 @@ -2079,6 +2088,14 @@ /* * R520 (0x208) - Clocking (1) */ +#define WM8958_DSP2CLK_ENA 0x4000 /* DSP2CLK_ENA */ +#define WM8958_DSP2CLK_ENA_MASK 0x4000 /* DSP2CLK_ENA */ +#define WM8958_DSP2CLK_ENA_SHIFT 14 /* DSP2CLK_ENA */ +#define WM8958_DSP2CLK_ENA_WIDTH 1 /* DSP2CLK_ENA */ +#define WM8958_DSP2CLK_SRC 0x1000 /* DSP2CLK_SRC */ +#define WM8958_DSP2CLK_SRC_MASK 0x1000 /* DSP2CLK_SRC */ +#define WM8958_DSP2CLK_SRC_SHIFT 12 /* DSP2CLK_SRC */ +#define WM8958_DSP2CLK_SRC_WIDTH 1 /* DSP2CLK_SRC */ #define WM8994_TOCLK_ENA 0x0010 /* TOCLK_ENA */ #define WM8994_TOCLK_ENA_MASK 0x0010 /* TOCLK_ENA */ #define WM8994_TOCLK_ENA_SHIFT 4 /* TOCLK_ENA */ @@ -4356,4 +4373,102 @@ #define WM8994_TEMP_SHUT_DB_SHIFT 0 /* TEMP_SHUT_DB */ #define WM8994_TEMP_SHUT_DB_WIDTH 1 /* TEMP_SHUT_DB */ +/* + * R2304 (0x900) - DSP2_Program + */ +#define WM8958_DSP2_ENA 0x0001 /* DSP2_ENA */ +#define WM8958_DSP2_ENA_MASK 0x0001 /* DSP2_ENA */ +#define WM8958_DSP2_ENA_SHIFT 0 /* DSP2_ENA */ +#define WM8958_DSP2_ENA_WIDTH 1 /* DSP2_ENA */ + +/* + * R2305 (0x901) - DSP2_Config + */ +#define WM8958_MBC_SEL_MASK 0x0030 /* MBC_SEL - [5:4] */ +#define WM8958_MBC_SEL_SHIFT 4 /* MBC_SEL - [5:4] */ +#define WM8958_MBC_SEL_WIDTH 2 /* MBC_SEL - [5:4] */ +#define WM8958_MBC_ENA 0x0001 /* MBC_ENA */ +#define WM8958_MBC_ENA_MASK 0x0001 /* MBC_ENA */ +#define WM8958_MBC_ENA_SHIFT 0 /* MBC_ENA */ +#define WM8958_MBC_ENA_WIDTH 1 /* MBC_ENA */ + +/* + * R2560 (0xA00) - DSP2_MagicNum + */ +#define WM8958_DSP2_MAGIC_NUM_MASK 0xFFFF /* DSP2_MAGIC_NUM - [15:0] */ +#define WM8958_DSP2_MAGIC_NUM_SHIFT 0 /* DSP2_MAGIC_NUM - [15:0] */ +#define WM8958_DSP2_MAGIC_NUM_WIDTH 16 /* DSP2_MAGIC_NUM - [15:0] */ + +/* + * R2561 (0xA01) - DSP2_ReleaseYear + */ +#define WM8958_DSP2_RELEASE_YEAR_MASK 0xFFFF /* DSP2_RELEASE_YEAR - [15:0] */ +#define WM8958_DSP2_RELEASE_YEAR_SHIFT 0 /* DSP2_RELEASE_YEAR - [15:0] */ +#define WM8958_DSP2_RELEASE_YEAR_WIDTH 16 /* DSP2_RELEASE_YEAR - [15:0] */ + +/* + * R2562 (0xA02) - DSP2_ReleaseMonthDay + */ +#define WM8958_DSP2_RELEASE_MONTH_MASK 0xFF00 /* DSP2_RELEASE_MONTH - [15:8] */ +#define WM8958_DSP2_RELEASE_MONTH_SHIFT 8 /* DSP2_RELEASE_MONTH - [15:8] */ +#define WM8958_DSP2_RELEASE_MONTH_WIDTH 8 /* DSP2_RELEASE_MONTH - [15:8] */ +#define WM8958_DSP2_RELEASE_DAY_MASK 0x00FF /* DSP2_RELEASE_DAY - [7:0] */ +#define WM8958_DSP2_RELEASE_DAY_SHIFT 0 /* DSP2_RELEASE_DAY - [7:0] */ +#define WM8958_DSP2_RELEASE_DAY_WIDTH 8 /* DSP2_RELEASE_DAY - [7:0] */ + +/* + * R2563 (0xA03) - DSP2_ReleaseTime + */ +#define WM8958_DSP2_RELEASE_HOURS_MASK 0xFF00 /* DSP2_RELEASE_HOURS - [15:8] */ +#define WM8958_DSP2_RELEASE_HOURS_SHIFT 8 /* DSP2_RELEASE_HOURS - [15:8] */ +#define WM8958_DSP2_RELEASE_HOURS_WIDTH 8 /* DSP2_RELEASE_HOURS - [15:8] */ +#define WM8958_DSP2_RELEASE_MINS_MASK 0x00FF /* DSP2_RELEASE_MINS - [7:0] */ +#define WM8958_DSP2_RELEASE_MINS_SHIFT 0 /* DSP2_RELEASE_MINS - [7:0] */ +#define WM8958_DSP2_RELEASE_MINS_WIDTH 8 /* DSP2_RELEASE_MINS - [7:0] */ + +/* + * R2564 (0xA04) - DSP2_VerMajMin + */ +#define WM8958_DSP2_MAJOR_VER_MASK 0xFF00 /* DSP2_MAJOR_VER - [15:8] */ +#define WM8958_DSP2_MAJOR_VER_SHIFT 8 /* DSP2_MAJOR_VER - [15:8] */ +#define WM8958_DSP2_MAJOR_VER_WIDTH 8 /* DSP2_MAJOR_VER - [15:8] */ +#define WM8958_DSP2_MINOR_VER_MASK 0x00FF /* DSP2_MINOR_VER - [7:0] */ +#define WM8958_DSP2_MINOR_VER_SHIFT 0 /* DSP2_MINOR_VER - [7:0] */ +#define WM8958_DSP2_MINOR_VER_WIDTH 8 /* DSP2_MINOR_VER - [7:0] */ + +/* + * R2565 (0xA05) - DSP2_VerBuild + */ +#define WM8958_DSP2_BUILD_VER_MASK 0xFFFF /* DSP2_BUILD_VER - [15:0] */ +#define WM8958_DSP2_BUILD_VER_SHIFT 0 /* DSP2_BUILD_VER - [15:0] */ +#define WM8958_DSP2_BUILD_VER_WIDTH 16 /* DSP2_BUILD_VER - [15:0] */ + +/* + * R2573 (0xA0D) - DSP2_ExecControl + */ +#define WM8958_DSP2_STOPC 0x0020 /* DSP2_STOPC */ +#define WM8958_DSP2_STOPC_MASK 0x0020 /* DSP2_STOPC */ +#define WM8958_DSP2_STOPC_SHIFT 5 /* DSP2_STOPC */ +#define WM8958_DSP2_STOPC_WIDTH 1 /* DSP2_STOPC */ +#define WM8958_DSP2_STOPS 0x0010 /* DSP2_STOPS */ +#define WM8958_DSP2_STOPS_MASK 0x0010 /* DSP2_STOPS */ +#define WM8958_DSP2_STOPS_SHIFT 4 /* DSP2_STOPS */ +#define WM8958_DSP2_STOPS_WIDTH 1 /* DSP2_STOPS */ +#define WM8958_DSP2_STOPI 0x0008 /* DSP2_STOPI */ +#define WM8958_DSP2_STOPI_MASK 0x0008 /* DSP2_STOPI */ +#define WM8958_DSP2_STOPI_SHIFT 3 /* DSP2_STOPI */ +#define WM8958_DSP2_STOPI_WIDTH 1 /* DSP2_STOPI */ +#define WM8958_DSP2_STOP 0x0004 /* DSP2_STOP */ +#define WM8958_DSP2_STOP_MASK 0x0004 /* DSP2_STOP */ +#define WM8958_DSP2_STOP_SHIFT 2 /* DSP2_STOP */ +#define WM8958_DSP2_STOP_WIDTH 1 /* DSP2_STOP */ +#define WM8958_DSP2_RUNR 0x0002 /* DSP2_RUNR */ +#define WM8958_DSP2_RUNR_MASK 0x0002 /* DSP2_RUNR */ +#define WM8958_DSP2_RUNR_SHIFT 1 /* DSP2_RUNR */ +#define WM8958_DSP2_RUNR_WIDTH 1 /* DSP2_RUNR */ +#define WM8958_DSP2_RUN 0x0001 /* DSP2_RUN */ +#define WM8958_DSP2_RUN_MASK 0x0001 /* DSP2_RUN */ +#define WM8958_DSP2_RUN_SHIFT 0 /* DSP2_RUN */ +#define WM8958_DSP2_RUN_WIDTH 1 /* DSP2_RUN */ + #endif -- cgit v1.2.3 From 821edd2fb5b289b84d715fb744106019fa2e1920 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Fri, 26 Nov 2010 15:21:09 +0000 Subject: ASoC: Add WM8958 microphone detection support The WM8958 contains an advanced accessory detection feature which allows detection of up to seven different impedence levels on the microphone bias output, including detection of video outputs. Since some of the more involved accessory interfaces may involve noticable interactions with external components a simple detection scheme is provided by default with the option to provide custom handling of accessory detect. Signed-off-by: Mark Brown Acked-by: Liam Girdwood --- include/linux/mfd/wm8994/registers.h | 43 ++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/wm8994/registers.h b/include/linux/mfd/wm8994/registers.h index 423b2b5c94ea..a610c8746436 100644 --- a/include/linux/mfd/wm8994/registers.h +++ b/include/linux/mfd/wm8994/registers.h @@ -70,6 +70,9 @@ #define WM8994_DC_SERVO_4 0x57 #define WM8994_DC_SERVO_READBACK 0x58 #define WM8994_ANALOGUE_HP_1 0x60 +#define WM8958_MIC_DETECT_1 0xD0 +#define WM8958_MIC_DETECT_2 0xD1 +#define WM8958_MIC_DETECT_3 0xD2 #define WM8994_CHIP_REVISION 0x100 #define WM8994_CONTROL_INTERFACE 0x101 #define WM8994_WRITE_SEQUENCER_CTRL_1 0x110 @@ -1970,6 +1973,46 @@ #define WM8994_HPOUT1R_DLY_SHIFT 1 /* HPOUT1R_DLY */ #define WM8994_HPOUT1R_DLY_WIDTH 1 /* HPOUT1R_DLY */ +/* + * R208 (0xD0) - Mic Detect 1 + */ +#define WM8958_MICD_BIAS_STARTTIME_MASK 0xF000 /* MICD_BIAS_STARTTIME - [15:12] */ +#define WM8958_MICD_BIAS_STARTTIME_SHIFT 12 /* MICD_BIAS_STARTTIME - [15:12] */ +#define WM8958_MICD_BIAS_STARTTIME_WIDTH 4 /* MICD_BIAS_STARTTIME - [15:12] */ +#define WM8958_MICD_RATE_MASK 0x0F00 /* MICD_RATE - [11:8] */ +#define WM8958_MICD_RATE_SHIFT 8 /* MICD_RATE - [11:8] */ +#define WM8958_MICD_RATE_WIDTH 4 /* MICD_RATE - [11:8] */ +#define WM8958_MICD_DBTIME 0x0002 /* MICD_DBTIME */ +#define WM8958_MICD_DBTIME_MASK 0x0002 /* MICD_DBTIME */ +#define WM8958_MICD_DBTIME_SHIFT 1 /* MICD_DBTIME */ +#define WM8958_MICD_DBTIME_WIDTH 1 /* MICD_DBTIME */ +#define WM8958_MICD_ENA 0x0001 /* MICD_ENA */ +#define WM8958_MICD_ENA_MASK 0x0001 /* MICD_ENA */ +#define WM8958_MICD_ENA_SHIFT 0 /* MICD_ENA */ +#define WM8958_MICD_ENA_WIDTH 1 /* MICD_ENA */ + +/* + * R209 (0xD1) - Mic Detect 2 + */ +#define WM8958_MICD_LVL_SEL_MASK 0x00FF /* MICD_LVL_SEL - [7:0] */ +#define WM8958_MICD_LVL_SEL_SHIFT 0 /* MICD_LVL_SEL - [7:0] */ +#define WM8958_MICD_LVL_SEL_WIDTH 8 /* MICD_LVL_SEL - [7:0] */ + +/* + * R210 (0xD2) - Mic Detect 3 + */ +#define WM8958_MICD_LVL_MASK 0x07FC /* MICD_LVL - [10:2] */ +#define WM8958_MICD_LVL_SHIFT 2 /* MICD_LVL - [10:2] */ +#define WM8958_MICD_LVL_WIDTH 9 /* MICD_LVL - [10:2] */ +#define WM8958_MICD_VALID 0x0002 /* MICD_VALID */ +#define WM8958_MICD_VALID_MASK 0x0002 /* MICD_VALID */ +#define WM8958_MICD_VALID_SHIFT 1 /* MICD_VALID */ +#define WM8958_MICD_VALID_WIDTH 1 /* MICD_VALID */ +#define WM8958_MICD_STS 0x0001 /* MICD_STS */ +#define WM8958_MICD_STS_MASK 0x0001 /* MICD_STS */ +#define WM8958_MICD_STS_SHIFT 0 /* MICD_STS */ +#define WM8958_MICD_STS_WIDTH 1 /* MICD_STS */ + /* * R256 (0x100) - Chip Revision */ -- cgit v1.2.3 From 5a0d2268d259886f0c87131639d19eb4a67b4532 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Tue, 23 Nov 2010 10:42:02 +0000 Subject: net: add netif_tx_queue_frozen_or_stopped When testing struct netdev_queue state against FROZEN bit, we also test XOFF bit. We can test both bits at once and save some cycles. Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- include/linux/netdevice.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index badf9285fe0d..7c6ae2f4b9ab 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -493,6 +493,8 @@ static inline void napi_synchronize(const struct napi_struct *n) enum netdev_queue_state_t { __QUEUE_STATE_XOFF, __QUEUE_STATE_FROZEN, +#define QUEUE_STATE_XOFF_OR_FROZEN ((1 << __QUEUE_STATE_XOFF) | \ + (1 << __QUEUE_STATE_FROZEN)) }; struct netdev_queue { @@ -1629,9 +1631,9 @@ static inline int netif_queue_stopped(const struct net_device *dev) return netif_tx_queue_stopped(netdev_get_tx_queue(dev, 0)); } -static inline int netif_tx_queue_frozen(const struct netdev_queue *dev_queue) +static inline int netif_tx_queue_frozen_or_stopped(const struct netdev_queue *dev_queue) { - return test_bit(__QUEUE_STATE_FROZEN, &dev_queue->state); + return dev_queue->state & QUEUE_STATE_XOFF_OR_FROZEN; } /** -- cgit v1.2.3 From 85beb5869a4f6abb52a7cf8e01de6fa57e9ee47d Mon Sep 17 00:00:00 2001 From: Steven Rostedt Date: Wed, 24 Nov 2010 16:23:34 -0500 Subject: tracing/slab: Move kmalloc tracepoint out of inline code The tracepoint for kmalloc is in the slab inlined code which causes every instance of kmalloc to have the tracepoint. This patch moves the tracepoint out of the inline code to the slab C file, which removes a large number of inlined trace points. objdump -dr vmlinux.slab| grep 'jmpq.* Signed-off-by: Pekka Enberg --- include/linux/slab_def.h | 33 +++++++++++++-------------------- 1 file changed, 13 insertions(+), 20 deletions(-) (limited to 'include/linux') diff --git a/include/linux/slab_def.h b/include/linux/slab_def.h index 791a502f6906..83203ae9390b 100644 --- a/include/linux/slab_def.h +++ b/include/linux/slab_def.h @@ -138,11 +138,12 @@ void *kmem_cache_alloc(struct kmem_cache *, gfp_t); void *__kmalloc(size_t size, gfp_t flags); #ifdef CONFIG_TRACING -extern void *kmem_cache_alloc_notrace(struct kmem_cache *cachep, gfp_t flags); +extern void *kmem_cache_alloc_trace(size_t size, + struct kmem_cache *cachep, gfp_t flags); extern size_t slab_buffer_size(struct kmem_cache *cachep); #else static __always_inline void * -kmem_cache_alloc_notrace(struct kmem_cache *cachep, gfp_t flags) +kmem_cache_alloc_trace(size_t size, struct kmem_cache *cachep, gfp_t flags) { return kmem_cache_alloc(cachep, flags); } @@ -179,10 +180,7 @@ found: #endif cachep = malloc_sizes[i].cs_cachep; - ret = kmem_cache_alloc_notrace(cachep, flags); - - trace_kmalloc(_THIS_IP_, ret, - size, slab_buffer_size(cachep), flags); + ret = kmem_cache_alloc_trace(size, cachep, flags); return ret; } @@ -194,14 +192,16 @@ extern void *__kmalloc_node(size_t size, gfp_t flags, int node); extern void *kmem_cache_alloc_node(struct kmem_cache *, gfp_t flags, int node); #ifdef CONFIG_TRACING -extern void *kmem_cache_alloc_node_notrace(struct kmem_cache *cachep, - gfp_t flags, - int nodeid); +extern void *kmem_cache_alloc_node_trace(size_t size, + struct kmem_cache *cachep, + gfp_t flags, + int nodeid); #else static __always_inline void * -kmem_cache_alloc_node_notrace(struct kmem_cache *cachep, - gfp_t flags, - int nodeid) +kmem_cache_alloc_node_trace(size_t size, + struct kmem_cache *cachep, + gfp_t flags, + int nodeid) { return kmem_cache_alloc_node(cachep, flags, nodeid); } @@ -210,7 +210,6 @@ kmem_cache_alloc_node_notrace(struct kmem_cache *cachep, static __always_inline void *kmalloc_node(size_t size, gfp_t flags, int node) { struct kmem_cache *cachep; - void *ret; if (__builtin_constant_p(size)) { int i = 0; @@ -234,13 +233,7 @@ found: #endif cachep = malloc_sizes[i].cs_cachep; - ret = kmem_cache_alloc_node_notrace(cachep, flags, node); - - trace_kmalloc_node(_THIS_IP_, ret, - size, slab_buffer_size(cachep), - flags, node); - - return ret; + return kmem_cache_alloc_node_trace(size, cachep, flags, node); } return __kmalloc_node(size, flags, node); } -- cgit v1.2.3 From ce6ada35bdf710d16582cc4869c26722547e6f11 Mon Sep 17 00:00:00 2001 From: "Serge E. Hallyn" Date: Thu, 25 Nov 2010 17:11:32 +0000 Subject: security: Define CAP_SYSLOG Privileged syslog operations currently require CAP_SYS_ADMIN. Split this off into a new CAP_SYSLOG privilege which we can sanely take away from a container through the capability bounding set. With this patch, an lxc container can be prevented from messing with the host's syslog (i.e. dmesg -c). Changelog: mar 12 2010: add selinux capability2:cap_syslog perm Changelog: nov 22 2010: . port to new kernel . add a WARN_ONCE if userspace isn't using CAP_SYSLOG Signed-off-by: Serge Hallyn Acked-by: Andrew G. Morgan Acked-By: Kees Cook Cc: James Morris Cc: Michael Kerrisk Cc: Stephen Smalley Cc: "Christopher J. PeBenito" Cc: Eric Paris Signed-off-by: James Morris --- include/linux/capability.h | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/capability.h b/include/linux/capability.h index 90012b9ddbf3..fb16a3699b99 100644 --- a/include/linux/capability.h +++ b/include/linux/capability.h @@ -246,7 +246,6 @@ struct cpu_vfs_cap_data { /* Allow configuration of the secure attention key */ /* Allow administration of the random device */ /* Allow examination and configuration of disk quotas */ -/* Allow configuring the kernel's syslog (printk behaviour) */ /* Allow setting the domainname */ /* Allow setting the hostname */ /* Allow calling bdflush() */ @@ -352,7 +351,11 @@ struct cpu_vfs_cap_data { #define CAP_MAC_ADMIN 33 -#define CAP_LAST_CAP CAP_MAC_ADMIN +/* Allow configuring the kernel's syslog (printk behaviour) */ + +#define CAP_SYSLOG 34 + +#define CAP_LAST_CAP CAP_SYSLOG #define cap_valid(x) ((x) >= 0 && (x) <= CAP_LAST_CAP) -- cgit v1.2.3 From dc88e46029486ed475c71fe1bb696d39511ac8fe Mon Sep 17 00:00:00 2001 From: Mimi Zohar Date: Tue, 23 Nov 2010 17:50:31 -0500 Subject: lib: hex2bin converts ascii hexadecimal string to binary Similar to the kgdb_hex2mem() code, hex2bin converts a string to binary using the hex_to_bin() library call. Changelog: - Replace parameter names with src/dst (based on David Howell's comment) - Add 'const' where needed (based on David Howell's comment) - Replace int with size_t (based on David Howell's comment) Signed-off-by: Mimi Zohar Acked-by: Serge E. Hallyn Acked-by: David Howells Signed-off-by: James Morris --- include/linux/kernel.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/kernel.h b/include/linux/kernel.h index a35b4f7332f0..d0fbc043de60 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -265,6 +265,7 @@ static inline char *pack_hex_byte(char *buf, u8 byte) } extern int hex_to_bin(char ch); +extern void hex2bin(u8 *dst, const char *src, size_t count); /* * General tracing related utility functions - trace_printk(), -- cgit v1.2.3 From c749ba912e87ccebd674ae24b97462176c63732e Mon Sep 17 00:00:00 2001 From: Mimi Zohar Date: Tue, 23 Nov 2010 18:54:16 -0500 Subject: key: add tpm_send command Add internal kernel tpm_send() command used to seal/unseal keys. Changelog: - replaced module_put in tpm_send() with new tpm_chip_put() wrapper (suggested by David Howells) - Make tpm_send() cmd argument a 'void *' (suggested by David Howells) Signed-off-by: David Safford Signed-off-by: Mimi Zohar Acked-by: David Howells Acked-by: Serge E. Hallyn Signed-off-by: James Morris --- include/linux/tpm.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/tpm.h b/include/linux/tpm.h index ac5d1c1285d9..fdc718abf83b 100644 --- a/include/linux/tpm.h +++ b/include/linux/tpm.h @@ -31,6 +31,7 @@ extern int tpm_pcr_read(u32 chip_num, int pcr_idx, u8 *res_buf); extern int tpm_pcr_extend(u32 chip_num, int pcr_idx, const u8 *hash); +extern int tpm_send(u32 chip_num, void *cmd, size_t buflen); #else static inline int tpm_pcr_read(u32 chip_num, int pcr_idx, u8 *res_buf) { return -ENODEV; @@ -38,5 +39,8 @@ static inline int tpm_pcr_read(u32 chip_num, int pcr_idx, u8 *res_buf) { static inline int tpm_pcr_extend(u32 chip_num, int pcr_idx, const u8 *hash) { return -ENODEV; } +static inline int tpm_send(u32 chip_num, void *cmd, size_t buflen) { + return -ENODEV; +} #endif #endif -- cgit v1.2.3 From d00a1c72f7f4661212299e6cb132dfa58030bcdb Mon Sep 17 00:00:00 2001 From: Mimi Zohar Date: Tue, 23 Nov 2010 17:50:34 -0500 Subject: keys: add new trusted key-type Define a new kernel key-type called 'trusted'. Trusted keys are random number symmetric keys, generated and RSA-sealed by the TPM. The TPM only unseals the keys, if the boot PCRs and other criteria match. Userspace can only ever see encrypted blobs. Based on suggestions by Jason Gunthorpe, several new options have been added to support additional usages. The new options are: migratable= designates that the key may/may not ever be updated (resealed under a new key, new pcrinfo or new auth.) pcrlock=n extends the designated PCR 'n' with a random value, so that a key sealed to that PCR may not be unsealed again until after a reboot. keyhandle= specifies the sealing/unsealing key handle. keyauth= specifies the sealing/unsealing key auth. blobauth= specifies the sealed data auth. Implementation of a kernel reserved locality for trusted keys will be investigated for a possible future extension. Changelog: - Updated and added examples to Documentation/keys-trusted-encrypted.txt - Moved generic TPM constants to include/linux/tpm_command.h (David Howell's suggestion.) - trusted_defined.c: replaced kzalloc with kmalloc, added pcrlock failure error handling, added const qualifiers where appropriate. - moved to late_initcall - updated from hash to shash (suggestion by David Howells) - reduced worst stack usage (tpm_seal) from 530 to 312 bytes - moved documentation to Documentation directory (suggestion by David Howells) - all the other code cleanups suggested by David Howells - Add pcrlock CAP_SYS_ADMIN dependency (based on comment by Jason Gunthorpe) - New options: migratable, pcrlock, keyhandle, keyauth, blobauth (based on discussions with Jason Gunthorpe) - Free payload on failure to create key(reported/fixed by Roberto Sassu) - Updated Kconfig and other descriptions (based on Serge Hallyn's suggestion) - Replaced kzalloc() with kmalloc() (reported by Serge Hallyn) Signed-off-by: David Safford Signed-off-by: Mimi Zohar Signed-off-by: James Morris --- include/linux/tpm_command.h | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 include/linux/tpm_command.h (limited to 'include/linux') diff --git a/include/linux/tpm_command.h b/include/linux/tpm_command.h new file mode 100644 index 000000000000..727512e249b5 --- /dev/null +++ b/include/linux/tpm_command.h @@ -0,0 +1,28 @@ +#ifndef __LINUX_TPM_COMMAND_H__ +#define __LINUX_TPM_COMMAND_H__ + +/* + * TPM Command constants from specifications at + * http://www.trustedcomputinggroup.org + */ + +/* Command TAGS */ +#define TPM_TAG_RQU_COMMAND 193 +#define TPM_TAG_RQU_AUTH1_COMMAND 194 +#define TPM_TAG_RQU_AUTH2_COMMAND 195 +#define TPM_TAG_RSP_COMMAND 196 +#define TPM_TAG_RSP_AUTH1_COMMAND 197 +#define TPM_TAG_RSP_AUTH2_COMMAND 198 + +/* Command Ordinals */ +#define TPM_ORD_GETRANDOM 70 +#define TPM_ORD_OSAP 11 +#define TPM_ORD_OIAP 10 +#define TPM_ORD_SEAL 23 +#define TPM_ORD_UNSEAL 24 + +/* Other constants */ +#define SRKHANDLE 0x40000000 +#define TPM_NONCE_SIZE 20 + +#endif -- cgit v1.2.3 From fa9f90be745d3b600a9d97a063be404c5e5d9071 Mon Sep 17 00:00:00 2001 From: Jesper Juhl Date: Sun, 28 Nov 2010 21:39:34 +0100 Subject: =?UTF-8?q?Kill=20off=20a=20bunch=20of=20warning:=20=E2=80=98inlin?= =?UTF-8?q?e=E2=80=99=20is=20not=20at=20beginning=20of=20declaration?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit These warnings are spewed during a build of a 'allnoconfig' kernel (especially the ones from u64_stats_sync.h show up a lot) when building with -Wextra (which I often do).. They are a) annoying b) easy to get rid of. This patch kills them off. include/linux/u64_stats_sync.h:70:1: warning: ‘inline’ is not at beginning of declaration include/linux/u64_stats_sync.h:77:1: warning: ‘inline’ is not at beginning of declaration include/linux/u64_stats_sync.h:84:1: warning: ‘inline’ is not at beginning of declaration include/linux/u64_stats_sync.h:96:1: warning: ‘inline’ is not at beginning of declaration include/linux/u64_stats_sync.h:115:1: warning: ‘inline’ is not at beginning of declaration include/linux/u64_stats_sync.h:127:1: warning: ‘inline’ is not at beginning of declaration kernel/time.c:241:1: warning: ‘inline’ is not at beginning of declaration kernel/time.c:257:1: warning: ‘inline’ is not at beginning of declaration kernel/perf_event.c:4513:1: warning: ‘inline’ is not at beginning of declaration mm/page_alloc.c:4012:1: warning: ‘inline’ is not at beginning of declaration Signed-off-by: Jesper Juhl Signed-off-by: Jiri Kosina --- include/linux/u64_stats_sync.h | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/u64_stats_sync.h b/include/linux/u64_stats_sync.h index fa261a0da280..8da8c4e87da3 100644 --- a/include/linux/u64_stats_sync.h +++ b/include/linux/u64_stats_sync.h @@ -67,21 +67,21 @@ struct u64_stats_sync { #endif }; -static void inline u64_stats_update_begin(struct u64_stats_sync *syncp) +static inline void u64_stats_update_begin(struct u64_stats_sync *syncp) { #if BITS_PER_LONG==32 && defined(CONFIG_SMP) write_seqcount_begin(&syncp->seq); #endif } -static void inline u64_stats_update_end(struct u64_stats_sync *syncp) +static inline void u64_stats_update_end(struct u64_stats_sync *syncp) { #if BITS_PER_LONG==32 && defined(CONFIG_SMP) write_seqcount_end(&syncp->seq); #endif } -static unsigned int inline u64_stats_fetch_begin(const struct u64_stats_sync *syncp) +static inline unsigned int u64_stats_fetch_begin(const struct u64_stats_sync *syncp) { #if BITS_PER_LONG==32 && defined(CONFIG_SMP) return read_seqcount_begin(&syncp->seq); @@ -93,7 +93,7 @@ static unsigned int inline u64_stats_fetch_begin(const struct u64_stats_sync *sy #endif } -static bool inline u64_stats_fetch_retry(const struct u64_stats_sync *syncp, +static inline bool u64_stats_fetch_retry(const struct u64_stats_sync *syncp, unsigned int start) { #if BITS_PER_LONG==32 && defined(CONFIG_SMP) @@ -112,7 +112,7 @@ static bool inline u64_stats_fetch_retry(const struct u64_stats_sync *syncp, * - UP 32bit must disable BH. * - 64bit have no problem atomically reading u64 values, irq safe. */ -static unsigned int inline u64_stats_fetch_begin_bh(const struct u64_stats_sync *syncp) +static inline unsigned int u64_stats_fetch_begin_bh(const struct u64_stats_sync *syncp) { #if BITS_PER_LONG==32 && defined(CONFIG_SMP) return read_seqcount_begin(&syncp->seq); @@ -124,7 +124,7 @@ static unsigned int inline u64_stats_fetch_begin_bh(const struct u64_stats_sync #endif } -static bool inline u64_stats_fetch_retry_bh(const struct u64_stats_sync *syncp, +static inline bool u64_stats_fetch_retry_bh(const struct u64_stats_sync *syncp, unsigned int start) { #if BITS_PER_LONG==32 && defined(CONFIG_SMP) -- cgit v1.2.3 From bf26414510103448ad3dc069c7422462f03ea3d7 Mon Sep 17 00:00:00 2001 From: Tom Herbert Date: Fri, 26 Nov 2010 08:36:09 +0000 Subject: xps: Add CONFIG_XPS This patch adds XPS_CONFIG option to enable and disable XPS. This is done in the same manner as RPS_CONFIG. This is also fixes build failure in XPS code when SMP is not enabled. Signed-off-by: Tom Herbert Signed-off-by: David S. Miller --- include/linux/netdevice.h | 52 +++++++++++++++++++++++++---------------------- 1 file changed, 28 insertions(+), 24 deletions(-) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 7c6ae2f4b9ab..9ae4544f0cf0 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -535,30 +535,6 @@ struct rps_map { }; #define RPS_MAP_SIZE(_num) (sizeof(struct rps_map) + (_num * sizeof(u16))) -/* - * This structure holds an XPS map which can be of variable length. The - * map is an array of queues. - */ -struct xps_map { - unsigned int len; - unsigned int alloc_len; - struct rcu_head rcu; - u16 queues[0]; -}; -#define XPS_MAP_SIZE(_num) (sizeof(struct xps_map) + (_num * sizeof(u16))) -#define XPS_MIN_MAP_ALLOC ((L1_CACHE_BYTES - sizeof(struct xps_map)) \ - / sizeof(u16)) - -/* - * This structure holds all XPS maps for device. Maps are indexed by CPU. - */ -struct xps_dev_maps { - struct rcu_head rcu; - struct xps_map *cpu_map[0]; -}; -#define XPS_DEV_MAPS_SIZE (sizeof(struct xps_dev_maps) + \ - (nr_cpu_ids * sizeof(struct xps_map *))) - /* * The rps_dev_flow structure contains the mapping of a flow to a CPU and the * tail pointer for that CPU's input queue at the time of last enqueue. @@ -626,6 +602,32 @@ struct netdev_rx_queue { } ____cacheline_aligned_in_smp; #endif /* CONFIG_RPS */ +#ifdef CONFIG_XPS +/* + * This structure holds an XPS map which can be of variable length. The + * map is an array of queues. + */ +struct xps_map { + unsigned int len; + unsigned int alloc_len; + struct rcu_head rcu; + u16 queues[0]; +}; +#define XPS_MAP_SIZE(_num) (sizeof(struct xps_map) + (_num * sizeof(u16))) +#define XPS_MIN_MAP_ALLOC ((L1_CACHE_BYTES - sizeof(struct xps_map)) \ + / sizeof(u16)) + +/* + * This structure holds all XPS maps for device. Maps are indexed by CPU. + */ +struct xps_dev_maps { + struct rcu_head rcu; + struct xps_map *cpu_map[0]; +}; +#define XPS_DEV_MAPS_SIZE (sizeof(struct xps_dev_maps) + \ + (nr_cpu_ids * sizeof(struct xps_map *))) +#endif /* CONFIG_XPS */ + /* * This structure defines the management hooks for network devices. * The following hooks can be defined; unless noted otherwise, they are @@ -1046,7 +1048,9 @@ struct net_device { unsigned long tx_queue_len; /* Max frames per queue allowed */ spinlock_t tx_global_lock; +#ifdef CONFIG_XPS struct xps_dev_maps *xps_maps; +#endif /* These may be needed for future network-power-down code. */ -- cgit v1.2.3 From 1ae0affedce1d3e401991fbe7f2674753f0a7641 Mon Sep 17 00:00:00 2001 From: Simon Horman Date: Fri, 26 Nov 2010 23:02:58 +0000 Subject: mmc, sh: Correct value for reset This resolves a regression that I introduced in "mmc, sh: Move constants to sh_mmcif.h". Having examined the manual and tested the code on an AP4EVB board it seems that the correct sequence is. 1) Write 1 to bit 31 and zeros to all other bits 2) Write zero to all bits Cc: Yusuke Goda Cc: Magnus Damm Signed-off-by: Simon Horman Signed-off-by: Paul Mundt --- include/linux/mmc/sh_mmcif.h | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mmc/sh_mmcif.h b/include/linux/mmc/sh_mmcif.h index a6bfa5296495..342ec1a38684 100644 --- a/include/linux/mmc/sh_mmcif.h +++ b/include/linux/mmc/sh_mmcif.h @@ -80,7 +80,7 @@ struct sh_mmcif_plat_data { /* CE_VERSION */ #define SOFT_RST_ON (1 << 31) -#define SOFT_RST_OFF ~SOFT_RST_ON +#define SOFT_RST_OFF 0 static inline u32 sh_mmcif_readl(void __iomem *addr, int reg) { @@ -168,12 +168,9 @@ static inline int sh_mmcif_boot_do_read(void __iomem *base, static inline void sh_mmcif_boot_init(void __iomem *base) { - unsigned long tmp; - /* reset */ - tmp = sh_mmcif_readl(base, MMCIF_CE_VERSION); - sh_mmcif_writel(base, MMCIF_CE_VERSION, tmp | SOFT_RST_ON); - sh_mmcif_writel(base, MMCIF_CE_VERSION, tmp & SOFT_RST_OFF); + sh_mmcif_writel(base, MMCIF_CE_VERSION, SOFT_RST_ON); + sh_mmcif_writel(base, MMCIF_CE_VERSION, SOFT_RST_OFF); /* byte swap */ sh_mmcif_writel(base, MMCIF_CE_BUF_ACC, BUF_ACC_ATYP); -- cgit v1.2.3 From 22efa0fee32d9e7f6f6fbc396a872b5708d86048 Mon Sep 17 00:00:00 2001 From: Simon Horman Date: Sat, 27 Nov 2010 00:11:55 +0000 Subject: sh, mmc: Use defines when setting CE_CLK_CTRL The 16-19th bits of CE_CLK_CTRL set the MMC clock frequency. Cc: Yusuke Goda Cc: Magnus Damm Signed-off-by: Simon Horman Signed-off-by: Paul Mundt --- include/linux/mmc/sh_mmcif.h | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mmc/sh_mmcif.h b/include/linux/mmc/sh_mmcif.h index 342ec1a38684..ffabf8c0a531 100644 --- a/include/linux/mmc/sh_mmcif.h +++ b/include/linux/mmc/sh_mmcif.h @@ -70,6 +70,9 @@ struct sh_mmcif_plat_data { #define CLK_ENABLE (1 << 24) /* 1: output mmc clock */ #define CLK_CLEAR ((1 << 19) | (1 << 18) | (1 << 17) | (1 << 16)) #define CLK_SUP_PCLK ((1 << 19) | (1 << 18) | (1 << 17) | (1 << 16)) +#define CLKDIV_4 (1<<16) /* mmc clock frequency. + * n: bus clock/(2^(n+1)) */ +#define CLKDIV_256 (7<<16) /* mmc clock frequency. (see above) */ #define SRSPTO_256 ((1 << 13) | (0 << 12)) /* resp timeout */ #define SRBSYTO_29 ((1 << 11) | (1 << 10) | \ (1 << 9) | (1 << 8)) /* resp busy timeout */ @@ -178,14 +181,10 @@ static inline void sh_mmcif_boot_init(void __iomem *base) /* Set block size in MMCIF hardware */ sh_mmcif_writel(base, MMCIF_CE_BLOCK_SET, SH_MMCIF_BBS); - /* Enable the clock, set it to Bus clock/256 (about 325Khz). - * It is unclear where 0x70000 comes from or if it is even needed. - * It is there for byte-compatibility with code that is known to - * work. - */ + /* Enable the clock, set it to Bus clock/256 (about 325Khz). */ sh_mmcif_writel(base, MMCIF_CE_CLK_CTRL, - CLK_ENABLE | SRSPTO_256 | SRBSYTO_29 | SRWDTO_29 | - SCCSTO_29 | 0x70000); + CLK_ENABLE | CLKDIV_256 | SRSPTO_256 | + SRBSYTO_29 | SRWDTO_29 | SCCSTO_29); /* CMD0 */ sh_mmcif_boot_cmd(base, 0x00000040, 0); @@ -210,7 +209,9 @@ static inline void sh_mmcif_boot_slurp(void __iomem *base, unsigned long tmp; /* In data transfer mode: Set clock to Bus clock/4 (about 20Mhz) */ - sh_mmcif_writel(base, MMCIF_CE_CLK_CTRL, 0x01012fff); + sh_mmcif_writel(base, MMCIF_CE_CLK_CTRL, + CLK_ENABLE | CLKDIV_4 | SRSPTO_256 | + SRBSYTO_29 | SRWDTO_29 | SCCSTO_29); /* CMD9 - Get CSD */ sh_mmcif_boot_cmd(base, 0x09806000, 0x00010000); -- cgit v1.2.3 From a41778694806ac1ccd4b1dafed1abef8d5ba98ac Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Sun, 28 Nov 2010 21:43:02 +0000 Subject: xps: add __rcu annotations Avoid sparse warnings : add __rcu annotations and use rcu_dereference_protected() where necessary. Signed-off-by: Eric Dumazet Cc: Tom Herbert Signed-off-by: David S. Miller --- include/linux/netdevice.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 9ae4544f0cf0..4b0c7f3aa32b 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -622,7 +622,7 @@ struct xps_map { */ struct xps_dev_maps { struct rcu_head rcu; - struct xps_map *cpu_map[0]; + struct xps_map __rcu *cpu_map[0]; }; #define XPS_DEV_MAPS_SIZE (sizeof(struct xps_dev_maps) + \ (nr_cpu_ids * sizeof(struct xps_map *))) @@ -1049,7 +1049,7 @@ struct net_device { spinlock_t tx_global_lock; #ifdef CONFIG_XPS - struct xps_dev_maps *xps_maps; + struct xps_dev_maps __rcu *xps_maps; #endif /* These may be needed for future network-power-down code. */ -- cgit v1.2.3 From 62a8c3a32e4143812ed8e0f3783ef1ea40dc87e4 Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Wed, 24 Nov 2010 19:33:43 +0000 Subject: Staging: sep: handle the rar definition stuff in the header SEP isn't the only driver that may need to handle both cases easily Signed-off-by: Alan Cox Signed-off-by: Greg Kroah-Hartman --- include/linux/rar_register.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'include/linux') diff --git a/include/linux/rar_register.h b/include/linux/rar_register.h index ffa805780f85..5c6118189363 100644 --- a/include/linux/rar_register.h +++ b/include/linux/rar_register.h @@ -34,11 +34,27 @@ struct rar_device; +#if defined(CONFIG_RAR_REGISTER) int register_rar(int num, int (*callback)(unsigned long data), unsigned long data); void unregister_rar(int num); int rar_get_address(int rar_index, dma_addr_t *start, dma_addr_t *end); int rar_lock(int rar_index); +#else +extern void unregister_rar(int num) { } +extern int rar_lock(int rar_index) { return -EIO; } + +extern inline int register_rar(int num, + int (*callback)(unsigned long data), unsigned long data) +{ + return -ENODEV; +} + +extern int rar_get_address(int rar_index, dma_addr_t *start, dma_addr_t *end) +{ + return -ENODEV; +} +#endif /* RAR_REGISTER */ #endif /* __KERNEL__ */ #endif /* _RAR_REGISTER_H */ -- cgit v1.2.3 From f7ca38dfe58c20cb1aa2ed9643187e8b194b5bae Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Thu, 25 Nov 2010 10:02:29 +0100 Subject: nl80211/cfg80211: extend mgmt-tx API for off-channel With p2p, it is sometimes necessary to transmit a frame (typically an action frame) on another channel than the current channel. Enable this through the CMD_FRAME API, and allow it to wait for a response. A new command allows that wait to be aborted. However, allow userspace to specify whether or not it wants to allow off-channel TX, it may actually want to use the same channel only. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- include/linux/nl80211.h | 25 ++++++++++++++++++++----- 1 file changed, 20 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index d706bf3badc8..5cfa579df476 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -358,11 +358,16 @@ * user space application). %NL80211_ATTR_FRAME is used to specify the * frame contents (including header). %NL80211_ATTR_WIPHY_FREQ (and * optionally %NL80211_ATTR_WIPHY_CHANNEL_TYPE) is used to indicate on - * which channel the frame is to be transmitted or was received. This - * channel has to be the current channel (remain-on-channel or the - * operational channel). When called, this operation returns a cookie - * (%NL80211_ATTR_COOKIE) that will be included with the TX status event - * pertaining to the TX request. + * which channel the frame is to be transmitted or was received. If this + * channel is not the current channel (remain-on-channel or the + * operational channel) the device will switch to the given channel and + * transmit the frame, optionally waiting for a response for the time + * specified using %NL80211_ATTR_DURATION. When called, this operation + * returns a cookie (%NL80211_ATTR_COOKIE) that will be included with the + * TX status event pertaining to the TX request. + * @NL80211_CMD_FRAME_WAIT_CANCEL: When an off-channel TX was requested, this + * command may be used with the corresponding cookie to cancel the wait + * time if it is known that it is no longer necessary. * @NL80211_CMD_ACTION: Alias for @NL80211_CMD_FRAME for backward compatibility. * @NL80211_CMD_FRAME_TX_STATUS: Report TX status of a management frame * transmitted with %NL80211_CMD_FRAME. %NL80211_ATTR_COOKIE identifies @@ -493,6 +498,8 @@ enum nl80211_commands { NL80211_CMD_SET_CHANNEL, NL80211_CMD_SET_WDS_PEER, + NL80211_CMD_FRAME_WAIT_CANCEL, + /* add new commands above here */ /* used to define NL80211_CMD_MAX below */ @@ -828,6 +835,12 @@ enum nl80211_commands { * * @NL80211_ATTR_MCAST_RATE: Multicast tx rate (in 100 kbps) for IBSS * + * @NL80211_ATTR_OFFCHANNEL_TX_OK: For management frame TX, the frame may be + * transmitted on another channel when the channel given doesn't match + * the current channel. If the current channel doesn't match and this + * flag isn't set, the frame will be rejected. This is also used as an + * nl80211 capability flag. + * * @NL80211_ATTR_MAX: highest attribute number currently defined * @__NL80211_ATTR_AFTER_LAST: internal use */ @@ -1002,6 +1015,8 @@ enum nl80211_attrs { NL80211_ATTR_MCAST_RATE, + NL80211_ATTR_OFFCHANNEL_TX_OK, + /* add attributes here, update the policy in nl80211.c */ __NL80211_ATTR_AFTER_LAST, -- cgit v1.2.3 From 24278d148316d2180be6df40e06db013d8b232b8 Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Mon, 27 Sep 2010 17:25:23 -0700 Subject: rcu: priority boosting for TINY_PREEMPT_RCU Add priority boosting, but only for TINY_PREEMPT_RCU. This is enabled by the default-off RCU_BOOST kernel parameter. The priority to which to boost preempted RCU readers is controlled by the RCU_BOOST_PRIO kernel parameter (defaulting to real-time priority 1) and the time to wait before boosting the readers blocking a given grace period is controlled by the RCU_BOOST_DELAY kernel parameter (defaulting to 500 milliseconds). Signed-off-by: Paul E. McKenney Signed-off-by: Paul E. McKenney --- include/linux/init_task.h | 9 ++++++++- include/linux/sched.h | 11 +++++++++-- 2 files changed, 17 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/init_task.h b/include/linux/init_task.h index 2fea6c8ef6ba..69f91aacdeee 100644 --- a/include/linux/init_task.h +++ b/include/linux/init_task.h @@ -81,6 +81,12 @@ extern struct group_info init_groups; */ # define CAP_INIT_BSET CAP_FULL_SET +#ifdef CONFIG_RCU_BOOST +#define INIT_TASK_RCU_BOOST() \ + .rcu_boost_mutex = NULL, +#else +#define INIT_TASK_RCU_BOOST() +#endif #ifdef CONFIG_TREE_PREEMPT_RCU #define INIT_TASK_RCU_TREE_PREEMPT() \ .rcu_blocked_node = NULL, @@ -92,7 +98,8 @@ extern struct group_info init_groups; .rcu_read_lock_nesting = 0, \ .rcu_read_unlock_special = 0, \ .rcu_node_entry = LIST_HEAD_INIT(tsk.rcu_node_entry), \ - INIT_TASK_RCU_TREE_PREEMPT() + INIT_TASK_RCU_TREE_PREEMPT() \ + INIT_TASK_RCU_BOOST() #else #define INIT_TASK_RCU_PREEMPT(tsk) #endif diff --git a/include/linux/sched.h b/include/linux/sched.h index e18473f0eb78..ed1a9bc52b2f 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1210,6 +1210,9 @@ struct task_struct { #ifdef CONFIG_TREE_PREEMPT_RCU struct rcu_node *rcu_blocked_node; #endif /* #ifdef CONFIG_TREE_PREEMPT_RCU */ +#ifdef CONFIG_RCU_BOOST + struct rt_mutex *rcu_boost_mutex; +#endif /* #ifdef CONFIG_RCU_BOOST */ #if defined(CONFIG_SCHEDSTATS) || defined(CONFIG_TASK_DELAY_ACCT) struct sched_info sched_info; @@ -1745,7 +1748,8 @@ extern void thread_group_times(struct task_struct *p, cputime_t *ut, cputime_t * #ifdef CONFIG_PREEMPT_RCU #define RCU_READ_UNLOCK_BLOCKED (1 << 0) /* blocked while in RCU read-side. */ -#define RCU_READ_UNLOCK_NEED_QS (1 << 1) /* RCU core needs CPU response. */ +#define RCU_READ_UNLOCK_BOOSTED (1 << 1) /* boosted while in RCU read-side. */ +#define RCU_READ_UNLOCK_NEED_QS (1 << 2) /* RCU core needs CPU response. */ static inline void rcu_copy_process(struct task_struct *p) { @@ -1753,7 +1757,10 @@ static inline void rcu_copy_process(struct task_struct *p) p->rcu_read_unlock_special = 0; #ifdef CONFIG_TREE_PREEMPT_RCU p->rcu_blocked_node = NULL; -#endif +#endif /* #ifdef CONFIG_TREE_PREEMPT_RCU */ +#ifdef CONFIG_RCU_BOOST + p->rcu_boost_mutex = NULL; +#endif /* #ifdef CONFIG_RCU_BOOST */ INIT_LIST_HEAD(&p->rcu_node_entry); } -- cgit v1.2.3 From 7b27d5475f86186914e54e4a6bb994e9a985337b Mon Sep 17 00:00:00 2001 From: Lai Jiangshan Date: Thu, 21 Oct 2010 11:29:05 +0800 Subject: rcu,cleanup: move synchronize_sched_expedited() out of sched.c The first version of synchronize_sched_expedited() used the migration code in the scheduler, and was therefore implemented in kernel/sched.c. However, the more recent version of this code no longer uses the migration code, so this commit moves it to the main RCU source files. Signed-off-by: Lai Jiangshan Signed-off-by: Paul E. McKenney --- include/linux/rcupdate.h | 1 - include/linux/rcutiny.h | 5 +++++ include/linux/rcutree.h | 1 + 3 files changed, 6 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h index 7142ee3304ab..49e8e16308e1 100644 --- a/include/linux/rcupdate.h +++ b/include/linux/rcupdate.h @@ -66,7 +66,6 @@ extern void call_rcu_sched(struct rcu_head *head, extern void synchronize_sched(void); extern void rcu_barrier_bh(void); extern void rcu_barrier_sched(void); -extern void synchronize_sched_expedited(void); extern int sched_expedited_torture_stats(char *page); static inline void __rcu_read_lock_bh(void) diff --git a/include/linux/rcutiny.h b/include/linux/rcutiny.h index ea025a611fcc..30ebd7c8d874 100644 --- a/include/linux/rcutiny.h +++ b/include/linux/rcutiny.h @@ -60,6 +60,11 @@ static inline void synchronize_rcu_bh_expedited(void) synchronize_sched(); } +static inline void synchronize_sched_expedited(void) +{ + synchronize_sched(); +} + #ifdef CONFIG_TINY_RCU static inline void rcu_preempt_note_context_switch(void) diff --git a/include/linux/rcutree.h b/include/linux/rcutree.h index c0e96833aa73..3a933482734a 100644 --- a/include/linux/rcutree.h +++ b/include/linux/rcutree.h @@ -48,6 +48,7 @@ static inline void exit_rcu(void) #endif /* #else #ifdef CONFIG_TREE_PREEMPT_RCU */ extern void synchronize_rcu_bh(void); +extern void synchronize_sched_expedited(void); extern void synchronize_rcu_expedited(void); static inline void synchronize_rcu_bh_expedited(void) -- cgit v1.2.3 From 9833c39400c3e6ee19daeded6910df648741611e Mon Sep 17 00:00:00 2001 From: Mika Westerberg Date: Fri, 19 Nov 2010 09:29:24 +0100 Subject: ARM: 6485/5: proc/vmcore - allow archs to override vmcore_elf_check_arch() Allow architectures to redefine this macro if needed. This is useful for example in architectures where 64-bit ELF vmcores are not supported. Specifying zero vmcore_elf64_check_arch() allows compiler to optimize away unnecessary parts of parse_crash_elf64_headers(). We also rename the macro to vmcore_elf64_check_arch() to reflect that it is used for 64-bit vmcores only. Signed-off-by: Mika Westerberg Signed-off-by: Russell King --- include/linux/crash_dump.h | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/crash_dump.h b/include/linux/crash_dump.h index 0026f267da20..088cd4ace4ef 100644 --- a/include/linux/crash_dump.h +++ b/include/linux/crash_dump.h @@ -20,7 +20,14 @@ extern ssize_t copy_oldmem_page(unsigned long, char *, size_t, #define vmcore_elf_check_arch_cross(x) 0 #endif -#define vmcore_elf_check_arch(x) (elf_check_arch(x) || vmcore_elf_check_arch_cross(x)) +/* + * Architecture code can redefine this if there are any special checks + * needed for 64-bit ELF vmcores. In case of 32-bit only architecture, + * this can be set to zero. + */ +#ifndef vmcore_elf64_check_arch +#define vmcore_elf64_check_arch(x) (elf_check_arch(x) || vmcore_elf_check_arch_cross(x)) +#endif /* * is_kdump_kernel() checks whether this kernel is booting after a panic of -- cgit v1.2.3 From 5091faa449ee0b7d73bc296a93bca9540fc51d0a Mon Sep 17 00:00:00 2001 From: Mike Galbraith Date: Tue, 30 Nov 2010 14:18:03 +0100 Subject: sched: Add 'autogroup' scheduling feature: automated per session task groups A recurring complaint from CFS users is that parallel kbuild has a negative impact on desktop interactivity. This patch implements an idea from Linus, to automatically create task groups. Currently, only per session autogroups are implemented, but the patch leaves the way open for enhancement. Implementation: each task's signal struct contains an inherited pointer to a refcounted autogroup struct containing a task group pointer, the default for all tasks pointing to the init_task_group. When a task calls setsid(), a new task group is created, the process is moved into the new task group, and a reference to the preveious task group is dropped. Child processes inherit this task group thereafter, and increase it's refcount. When the last thread of a process exits, the process's reference is dropped, such that when the last process referencing an autogroup exits, the autogroup is destroyed. At runqueue selection time, IFF a task has no cgroup assignment, its current autogroup is used. Autogroup bandwidth is controllable via setting it's nice level through the proc filesystem: cat /proc//autogroup Displays the task's group and the group's nice level. echo > /proc//autogroup Sets the task group's shares to the weight of nice task. Setting nice level is rate limited for !admin users due to the abuse risk of task group locking. The feature is enabled from boot by default if CONFIG_SCHED_AUTOGROUP=y is selected, but can be disabled via the boot option noautogroup, and can also be turned on/off on the fly via: echo [01] > /proc/sys/kernel/sched_autogroup_enabled ... which will automatically move tasks to/from the root task group. Signed-off-by: Mike Galbraith Acked-by: Linus Torvalds Acked-by: Peter Zijlstra Cc: Markus Trippelsdorf Cc: Mathieu Desnoyers Cc: Paul Turner Cc: Oleg Nesterov [ Removed the task_group_path() debug code, and fixed !EVENTFD build failure. ] Signed-off-by: Ingo Molnar LKML-Reference: <1290281700.28711.9.camel@maggy.simson.net> Signed-off-by: Ingo Molnar --- include/linux/sched.h | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index a5b92c70c737..9c2d46da486e 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -509,6 +509,8 @@ struct thread_group_cputimer { spinlock_t lock; }; +struct autogroup; + /* * NOTE! "signal_struct" does not have it's own * locking, because a shared signal_struct always @@ -576,6 +578,9 @@ struct signal_struct { struct tty_struct *tty; /* NULL if no tty */ +#ifdef CONFIG_SCHED_AUTOGROUP + struct autogroup *autogroup; +#endif /* * Cumulative resource counters for dead threads in the group, * and for reaped dead child processes forked by this group. @@ -1927,6 +1932,24 @@ int sched_rt_handler(struct ctl_table *table, int write, extern unsigned int sysctl_sched_compat_yield; +#ifdef CONFIG_SCHED_AUTOGROUP +extern unsigned int sysctl_sched_autogroup_enabled; + +extern void sched_autogroup_create_attach(struct task_struct *p); +extern void sched_autogroup_detach(struct task_struct *p); +extern void sched_autogroup_fork(struct signal_struct *sig); +extern void sched_autogroup_exit(struct signal_struct *sig); +#ifdef CONFIG_PROC_FS +extern void proc_sched_autogroup_show_task(struct task_struct *p, struct seq_file *m); +extern int proc_sched_autogroup_set_nice(struct task_struct *p, int *nice); +#endif +#else +static inline void sched_autogroup_create_attach(struct task_struct *p) { } +static inline void sched_autogroup_detach(struct task_struct *p) { } +static inline void sched_autogroup_fork(struct signal_struct *sig) { } +static inline void sched_autogroup_exit(struct signal_struct *sig) { } +#endif + #ifdef CONFIG_RT_MUTEXES extern int rt_mutex_getprio(struct task_struct *p); extern void rt_mutex_setprio(struct task_struct *p, int prio); -- cgit v1.2.3 From c320c7b7d380e630f595de1236d9d085b035d5b4 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Wed, 20 Oct 2010 12:50:11 -0200 Subject: perf events: Precalculate the header space for PERF_SAMPLE_ fields MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit PERF_SAMPLE_{CALLCHAIN,RAW} have variable lenghts per sample, but the others can be precalculated, reducing a bit the per sample cost. Acked-by: Peter Zijlstra Cc: Frédéric Weisbecker Cc: Ian Munsie Cc: Mike Galbraith Cc: Peter Zijlstra Cc: Paul Mackerras Cc: Stephane Eranian LKML-Reference: Signed-off-by: Arnaldo Carvalho de Melo --- include/linux/perf_event.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index cbf04cc1e630..adf6d9931643 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -758,6 +758,8 @@ struct perf_event { u64 shadow_ctx_time; struct perf_event_attr attr; + u16 header_size; + u16 read_size; struct hw_perf_event hw; struct perf_event_context *ctx; -- cgit v1.2.3 From 498cb95175c29ed96bf32f30df2d11ec1c7f3879 Mon Sep 17 00:00:00 2001 From: Andrei Emeltchenko Date: Tue, 30 Nov 2010 14:11:49 -0800 Subject: OMAP: Serial: Define OMAP uart MDR1 reg and remove magic numbers Define MDR1 register serial definitions used in serial and bluetooth drivers. Change magic number to ones defined in serial_reg for omap1/2 serial driver. Remove redefined MDR1 register definitions in omap-serial driver. Signed-off-by: Andrei Emeltchenko Acked-by: G, Manjunath Kondaiah Acked-by: Govindraj.R Acked-by: Greg Kroah-Hartman Signed-off-by: Tony Lindgren --- include/linux/serial_reg.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'include/linux') diff --git a/include/linux/serial_reg.h b/include/linux/serial_reg.h index c7a0ce11cd47..6f3823474e6c 100644 --- a/include/linux/serial_reg.h +++ b/include/linux/serial_reg.h @@ -341,5 +341,17 @@ #define UART_OMAP_SYSS 0x16 /* System status register */ #define UART_OMAP_WER 0x17 /* Wake-up enable register */ +/* + * These are the definitions for the MDR1 register + */ +#define UART_OMAP_MDR1_16X_MODE 0x00 /* UART 16x mode */ +#define UART_OMAP_MDR1_SIR_MODE 0x01 /* SIR mode */ +#define UART_OMAP_MDR1_16X_ABAUD_MODE 0x02 /* UART 16x auto-baud */ +#define UART_OMAP_MDR1_13X_MODE 0x03 /* UART 13x mode */ +#define UART_OMAP_MDR1_MIR_MODE 0x04 /* MIR mode */ +#define UART_OMAP_MDR1_FIR_MODE 0x05 /* FIR mode */ +#define UART_OMAP_MDR1_CIR_MODE 0x06 /* CIR mode */ +#define UART_OMAP_MDR1_DISABLE 0x07 /* Disable (default state) */ + #endif /* _LINUX_SERIAL_REG_H */ -- cgit v1.2.3 From 662b083a87a3489f3f19c6e0651c1b99b0de5df0 Mon Sep 17 00:00:00 2001 From: Andrei Emeltchenko Date: Tue, 30 Nov 2010 14:11:49 -0800 Subject: omap: Serial: Define register access modes in LCR MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Access to some registers depends on register access mode Three different modes are available for OMAP (at least) • Operational mode LCR_REG[7] = 0x0 • Configuration mode A LCR_REG[7] = 0x1 and LCR_REG[7:0]! = 0xBF • Configuration mode B LCR_REG[7] = 0x1 and LCR_REG[7:0] = 0xBF Define access modes and remove redefinitions and magic numbers in serial drivers (and later in bluetooth driver). Signed-off-by: Andrei Emeltchenko Acked-by: Govindraj.R Acked-by: Greg Kroah-Hartman Signed-off-by: Tony Lindgren --- include/linux/serial_reg.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/serial_reg.h b/include/linux/serial_reg.h index 6f3823474e6c..3ecb71a9e505 100644 --- a/include/linux/serial_reg.h +++ b/include/linux/serial_reg.h @@ -99,6 +99,13 @@ #define UART_LCR_WLEN7 0x02 /* Wordlength: 7 bits */ #define UART_LCR_WLEN8 0x03 /* Wordlength: 8 bits */ +/* + * Access to some registers depends on register access / configuration + * mode. + */ +#define UART_LCR_CONF_MODE_A UART_LCR_DLAB /* Configutation mode A */ +#define UART_LCR_CONF_MODE_B 0xBF /* Configutation mode B */ + #define UART_MCR 4 /* Out: Modem Control Register */ #define UART_MCR_CLKSEL 0x80 /* Divide clock by 4 (TI16C752, EFR[4]=1) */ #define UART_MCR_TCRTLR 0x40 /* Access TCR/TLR (TI16C752, EFR[4]=1) */ -- cgit v1.2.3 From ad9c2b048b605fbc8d50526e330b88abdd631ab2 Mon Sep 17 00:00:00 2001 From: Tetsuo Handa Date: Tue, 30 Nov 2010 11:06:47 +0900 Subject: security: Fix comment of security_key_permission Comment for return value of security_key_permission() has been wrong since it was added in 2.6.15. Signed-off-by: Tetsuo Handa Signed-off-by: James Morris --- include/linux/security.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/security.h b/include/linux/security.h index fd4d55fb8845..e7d89b0c1fd8 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -1058,8 +1058,7 @@ static inline void security_free_mnt_opts(struct security_mnt_opts *opts) * @cred points to the credentials to provide the context against which to * evaluate the security data on the key. * @perm describes the combination of permissions required of this key. - * Return 1 if permission granted, 0 if permission denied and -ve it the - * normal permissions model should be effected. + * Return 0 if permission is granted, -ve error otherwise. * @key_getsecurity: * Get a textual representation of the security context attached to a key * for the purposes of honouring KEYCTL_GETSECURITY. This function -- cgit v1.2.3 From c41ab6a1b9028de33e74101cb0aae13098a56fdb Mon Sep 17 00:00:00 2001 From: Eric Paris Date: Mon, 29 Nov 2010 15:47:09 -0500 Subject: flex_array: fix flex_array_put_ptr macro to be valid C MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Using flex_array_put_ptr() results in a compile error "error: lvalue required as unary ‘&’ operand" fix the casting order to fix this. Signed-off-by: Eric Paris --- include/linux/flex_array.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/flex_array.h b/include/linux/flex_array.h index 631b77f2ac70..70e4efabe0fb 100644 --- a/include/linux/flex_array.h +++ b/include/linux/flex_array.h @@ -71,7 +71,7 @@ void *flex_array_get(struct flex_array *fa, unsigned int element_nr); int flex_array_shrink(struct flex_array *fa); #define flex_array_put_ptr(fa, nr, src, gfp) \ - flex_array_put(fa, nr, &(void *)(src), gfp) + flex_array_put(fa, nr, (void *)&(src), gfp) void *flex_array_get_ptr(struct flex_array *fa, unsigned int element_nr); -- cgit v1.2.3 From 5b275ce27077d6463ca28c9671dce7c2c1f622e2 Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Thu, 11 Nov 2010 15:27:29 +0000 Subject: thermal: make ops constant And while touching that function definition do something about the disaster of formatting there. Signed-off-by: Alan Cox Acked-by: Zhang Rui Signed-off-by: Len Brown --- include/linux/thermal.h | 15 +++++---------- 1 file changed, 5 insertions(+), 10 deletions(-) (limited to 'include/linux') diff --git a/include/linux/thermal.h b/include/linux/thermal.h index 1de8b9eb841b..06626904daa0 100644 --- a/include/linux/thermal.h +++ b/include/linux/thermal.h @@ -77,7 +77,7 @@ struct thermal_cooling_device { char type[THERMAL_NAME_LENGTH]; struct device device; void *devdata; - struct thermal_cooling_device_ops *ops; + const struct thermal_cooling_device_ops *ops; struct list_head node; }; @@ -114,7 +114,7 @@ struct thermal_zone_device { int last_temperature; bool passive; unsigned int forced_passive; - struct thermal_zone_device_ops *ops; + const struct thermal_zone_device_ops *ops; struct list_head cooling_devices; struct idr idr; struct mutex lock; /* protect cooling devices list */ @@ -129,11 +129,8 @@ struct thermal_zone_device { }; struct thermal_zone_device *thermal_zone_device_register(char *, int, void *, - struct - thermal_zone_device_ops - *, int tc1, int tc2, - int passive_freq, - int polling_freq); + const struct thermal_zone_device_ops *, int tc1, int tc2, + int passive_freq, int polling_freq); void thermal_zone_device_unregister(struct thermal_zone_device *); int thermal_zone_bind_cooling_device(struct thermal_zone_device *, int, @@ -142,9 +139,7 @@ int thermal_zone_unbind_cooling_device(struct thermal_zone_device *, int, struct thermal_cooling_device *); void thermal_zone_device_update(struct thermal_zone_device *); struct thermal_cooling_device *thermal_cooling_device_register(char *, void *, - struct - thermal_cooling_device_ops - *); + const struct thermal_cooling_device_ops *); void thermal_cooling_device_unregister(struct thermal_cooling_device *); #endif /* __THERMAL_H__ */ -- cgit v1.2.3 From 7fc56f0d9908fe140a01387d59954e3d0a2e7744 Mon Sep 17 00:00:00 2001 From: Luo Andy Date: Tue, 23 Nov 2010 10:41:21 +0800 Subject: usb: gadget: langwell_udc: add usb test mode support This patch adds test mode support for Langwell gadget driver. Signed-off-by: Henry Yuan Signed-off-by: Andy Luo Signed-off-by: Greg Kroah-Hartman --- include/linux/usb/ch9.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb/ch9.h b/include/linux/usb/ch9.h index f917bbbc8901..ab461948b579 100644 --- a/include/linux/usb/ch9.h +++ b/include/linux/usb/ch9.h @@ -123,6 +123,16 @@ #define USB_DEVICE_A_ALT_HNP_SUPPORT 5 /* (otg) other RH port does */ #define USB_DEVICE_DEBUG_MODE 6 /* (special devices only) */ +/* + * Test Mode Selectors + * See USB 2.0 spec Table 9-7 + */ +#define TEST_J 1 +#define TEST_K 2 +#define TEST_SE0_NAK 3 +#define TEST_PACKET 4 +#define TEST_FORCE_EN 5 + /* * New Feature Selectors as added by USB 3.0 * See USB 3.0 spec Table 9-6 -- cgit v1.2.3 From b029ffafe89cf4b97cf39e0225a5205cbbf9e02f Mon Sep 17 00:00:00 2001 From: Hemanth V Date: Tue, 30 Nov 2010 23:03:54 -0800 Subject: Input: add CMA3000 accelerometer driver Add support for CMA3000 Tri-axis accelerometer, which supports Motion detect, Measurement and Free fall modes. CMA3000 supports both I2C/SPI bus for communication, currently the driver supports I2C based communication. Signed-off-by: Hemanth V Reviewed-by: Jonathan Cameron Reviewed-by: Sergio Aguirre Reviewed-by: Shubhrajyoti Signed-off-by: Dmitry Torokhov --- include/linux/input/cma3000.h | 59 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 59 insertions(+) create mode 100644 include/linux/input/cma3000.h (limited to 'include/linux') diff --git a/include/linux/input/cma3000.h b/include/linux/input/cma3000.h new file mode 100644 index 000000000000..cbbaac27d311 --- /dev/null +++ b/include/linux/input/cma3000.h @@ -0,0 +1,59 @@ +/* + * VTI CMA3000_Dxx Accelerometer driver + * + * Copyright (C) 2010 Texas Instruments + * Author: Hemanth V + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see . + */ + +#ifndef _LINUX_CMA3000_H +#define _LINUX_CMA3000_H + +#define CMAMODE_DEFAULT 0 +#define CMAMODE_MEAS100 1 +#define CMAMODE_MEAS400 2 +#define CMAMODE_MEAS40 3 +#define CMAMODE_MOTDET 4 +#define CMAMODE_FF100 5 +#define CMAMODE_FF400 6 +#define CMAMODE_POFF 7 + +#define CMARANGE_2G 2000 +#define CMARANGE_8G 8000 + +/** + * struct cma3000_i2c_platform_data - CMA3000 Platform data + * @fuzz_x: Noise on X Axis + * @fuzz_y: Noise on Y Axis + * @fuzz_z: Noise on Z Axis + * @g_range: G range in milli g i.e 2000 or 8000 + * @mode: Operating mode + * @mdthr: Motion detect threshold value + * @mdfftmr: Motion detect and free fall time value + * @ffthr: Free fall threshold value + */ + +struct cma3000_platform_data { + int fuzz_x; + int fuzz_y; + int fuzz_z; + int g_range; + uint8_t mode; + uint8_t mdthr; + uint8_t mdfftmr; + uint8_t ffthr; + unsigned long irqflags; +}; + +#endif -- cgit v1.2.3 From 0417596f66dd6621f4fd46563c7c56a95311dbe8 Mon Sep 17 00:00:00 2001 From: Bastien Nocera Date: Mon, 29 Nov 2010 23:33:05 -0800 Subject: Input: add keycodes for touchpad on/off keys Some laptops will have a "touchpad toggle" soft button, which expects user-space to turn off the touchpad themselves, some other devices will do this in hardware, but send key events telling us that the touchpad has been turned off/on. KEY_TOUCHPAD_ON/KEY_TOUCHPAD_OFF will be used by user-space to show a popup with the status of the touchpad. Signed-off-by: Bastien Nocera Signed-off-by: Dmitry Torokhov --- include/linux/input.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/input.h b/include/linux/input.h index 6ef44465db8d..a50046f15372 100644 --- a/include/linux/input.h +++ b/include/linux/input.h @@ -624,6 +624,10 @@ struct input_keymap_entry { #define KEY_CAMERA_FOCUS 0x210 #define KEY_WPS_BUTTON 0x211 /* WiFi Protected Setup key */ +#define KEY_TOUCHPAD_TOGGLE 0x212 /* Request switch touchpad on or off */ +#define KEY_TOUCHPAD_ON 0x213 +#define KEY_TOUCHPAD_OFF 0x214 + #define BTN_TRIGGER_HAPPY 0x2c0 #define BTN_TRIGGER_HAPPY1 0x2c0 #define BTN_TRIGGER_HAPPY2 0x2c1 -- cgit v1.2.3 From 86b17f76f462db460d6d916e105a4c44cb353e36 Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Mon, 29 Nov 2010 23:33:04 -0800 Subject: Input: document struct input_absinfo Add documentation for struct input_absinfo that is used in EVIOCGABS and EVIOCSABS ioctl and specify units of measure used for reporting resolution for an axis. Acked-by: Henrik Rydberg Signed-off-by: Dmitry Torokhov --- include/linux/input.h | 21 ++++++++++++++++++++- 1 file changed, 20 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/input.h b/include/linux/input.h index a50046f15372..a8af21d42bc1 100644 --- a/include/linux/input.h +++ b/include/linux/input.h @@ -47,6 +47,25 @@ struct input_id { __u16 version; }; +/** + * struct input_absinfo - used by EVIOCGABS/EVIOCSABS ioctls + * @value: latest reported value for the axis. + * @minimum: specifies minimum value for the axis. + * @maximum: specifies maximum value for the axis. + * @fuzz: specifies fuzz value that is used to filter noise from + * the event stream. + * @flat: values that are within this value will be discarded by + * joydev interface and reported as 0 instead. + * @resolution: specifies resolution for the values reported for + * the axis. + * + * Note that input core does not clamp reported values to the + * [minimum, maximum] limits, such task is left to userspace. + * + * Resolution for main axes (ABS_X, ABS_Y, ABS_Z) is reported in + * units per millimeter (units/mm), resolution for rotational axes + * (ABS_RX, ABS_RY, ABS_RZ) is reported in units per radian. + */ struct input_absinfo { __s32 value; __s32 minimum; @@ -1134,7 +1153,7 @@ struct input_mt_slot { * of tracked contacts * @mtsize: number of MT slots the device uses * @slot: MT slot currently being transmitted - * @absinfo: array of &struct absinfo elements holding information + * @absinfo: array of &struct input_absinfo elements holding information * about absolute axes (current value, min, max, flat, fuzz, * resolution) * @key: reflects current state of device's keys/buttons -- cgit v1.2.3 From 8348c259dd6a6019a8fa01b0a3443409480f7b9d Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Mon, 22 Nov 2010 17:12:15 -0800 Subject: arm/pxa2xx: reorgazine SSP and SPI header files The PXA-SPI driver relies on some files / defines which are arm specific and are within the ARM tree. The CE4100 SoC which is x86 has also the SPI core. This patch moves the ssp and spi files from arm/mach-pxa and plat-pxa to include/linux where the CE4100 can access them. This move got verified by building the following defconfigs: cm_x2xx_defconfig corgi_defconfig em_x270_defconfig ezx_defconfig imote2_defconfig pxa3xx_defconfig spitz_defconfig zeus_defconfig raumfeld_defconfig magician_defconfig Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Dirk Brandewie --- include/linux/pxa2xx_ssp.h | 187 +++++++++++++++++++++++++++++++++++++++++ include/linux/spi/pxa2xx_spi.h | 49 +++++++++++ 2 files changed, 236 insertions(+) create mode 100644 include/linux/pxa2xx_ssp.h create mode 100644 include/linux/spi/pxa2xx_spi.h (limited to 'include/linux') diff --git a/include/linux/pxa2xx_ssp.h b/include/linux/pxa2xx_ssp.h new file mode 100644 index 000000000000..84465d4a51b7 --- /dev/null +++ b/include/linux/pxa2xx_ssp.h @@ -0,0 +1,187 @@ +/* + * pxa2xx_ssp.h + * + * Copyright (C) 2003 Russell King, All Rights Reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This driver supports the following PXA CPU/SSP ports:- + * + * PXA250 SSP + * PXA255 SSP, NSSP + * PXA26x SSP, NSSP, ASSP + * PXA27x SSP1, SSP2, SSP3 + * PXA3xx SSP1, SSP2, SSP3, SSP4 + */ + +#ifndef __LINUX_SSP_H +#define __LINUX_SSP_H + +#include +#include + +/* + * SSP Serial Port Registers + * PXA250, PXA255, PXA26x and PXA27x SSP controllers are all slightly different. + * PXA255, PXA26x and PXA27x have extra ports, registers and bits. + */ + +#define SSCR0 (0x00) /* SSP Control Register 0 */ +#define SSCR1 (0x04) /* SSP Control Register 1 */ +#define SSSR (0x08) /* SSP Status Register */ +#define SSITR (0x0C) /* SSP Interrupt Test Register */ +#define SSDR (0x10) /* SSP Data Write/Data Read Register */ + +#define SSTO (0x28) /* SSP Time Out Register */ +#define SSPSP (0x2C) /* SSP Programmable Serial Protocol */ +#define SSTSA (0x30) /* SSP Tx Timeslot Active */ +#define SSRSA (0x34) /* SSP Rx Timeslot Active */ +#define SSTSS (0x38) /* SSP Timeslot Status */ +#define SSACD (0x3C) /* SSP Audio Clock Divider */ +#define SSACDD (0x40) /* SSP Audio Clock Dither Divider */ + +/* Common PXA2xx bits first */ +#define SSCR0_DSS (0x0000000f) /* Data Size Select (mask) */ +#define SSCR0_DataSize(x) ((x) - 1) /* Data Size Select [4..16] */ +#define SSCR0_FRF (0x00000030) /* FRame Format (mask) */ +#define SSCR0_Motorola (0x0 << 4) /* Motorola's Serial Peripheral Interface (SPI) */ +#define SSCR0_TI (0x1 << 4) /* Texas Instruments' Synchronous Serial Protocol (SSP) */ +#define SSCR0_National (0x2 << 4) /* National Microwire */ +#define SSCR0_ECS (1 << 6) /* External clock select */ +#define SSCR0_SSE (1 << 7) /* Synchronous Serial Port Enable */ +#define SSCR0_SCR(x) ((x) << 8) /* Serial Clock Rate (mask) */ + +/* PXA27x, PXA3xx */ +#define SSCR0_EDSS (1 << 20) /* Extended data size select */ +#define SSCR0_NCS (1 << 21) /* Network clock select */ +#define SSCR0_RIM (1 << 22) /* Receive FIFO overrrun interrupt mask */ +#define SSCR0_TUM (1 << 23) /* Transmit FIFO underrun interrupt mask */ +#define SSCR0_FRDC (0x07000000) /* Frame rate divider control (mask) */ +#define SSCR0_SlotsPerFrm(x) (((x) - 1) << 24) /* Time slots per frame [1..8] */ +#define SSCR0_FPCKE (1 << 29) /* FIFO packing enable */ +#define SSCR0_ACS (1 << 30) /* Audio clock select */ +#define SSCR0_MOD (1 << 31) /* Mode (normal or network) */ + + +#define SSCR1_RIE (1 << 0) /* Receive FIFO Interrupt Enable */ +#define SSCR1_TIE (1 << 1) /* Transmit FIFO Interrupt Enable */ +#define SSCR1_LBM (1 << 2) /* Loop-Back Mode */ +#define SSCR1_SPO (1 << 3) /* Motorola SPI SSPSCLK polarity setting */ +#define SSCR1_SPH (1 << 4) /* Motorola SPI SSPSCLK phase setting */ +#define SSCR1_MWDS (1 << 5) /* Microwire Transmit Data Size */ +#define SSCR1_TFT (0x000003c0) /* Transmit FIFO Threshold (mask) */ +#define SSCR1_TxTresh(x) (((x) - 1) << 6) /* level [1..16] */ +#define SSCR1_RFT (0x00003c00) /* Receive FIFO Threshold (mask) */ +#define SSCR1_RxTresh(x) (((x) - 1) << 10) /* level [1..16] */ + +#define SSSR_TNF (1 << 2) /* Transmit FIFO Not Full */ +#define SSSR_RNE (1 << 3) /* Receive FIFO Not Empty */ +#define SSSR_BSY (1 << 4) /* SSP Busy */ +#define SSSR_TFS (1 << 5) /* Transmit FIFO Service Request */ +#define SSSR_RFS (1 << 6) /* Receive FIFO Service Request */ +#define SSSR_ROR (1 << 7) /* Receive FIFO Overrun */ +#define SSSR_TFL_MASK (0xf << 8) /* Transmit FIFO Level mask */ +#define SSSR_RFL_MASK (0xf << 12) /* Receive FIFO Level mask */ + +/* extra bits in PXA255, PXA26x and PXA27x SSP ports */ +#define SSCR0_TISSP (1 << 4) /* TI Sync Serial Protocol */ +#define SSCR0_PSP (3 << 4) /* PSP - Programmable Serial Protocol */ +#define SSCR1_TTELP (1 << 31) /* TXD Tristate Enable Last Phase */ +#define SSCR1_TTE (1 << 30) /* TXD Tristate Enable */ +#define SSCR1_EBCEI (1 << 29) /* Enable Bit Count Error interrupt */ +#define SSCR1_SCFR (1 << 28) /* Slave Clock free Running */ +#define SSCR1_ECRA (1 << 27) /* Enable Clock Request A */ +#define SSCR1_ECRB (1 << 26) /* Enable Clock request B */ +#define SSCR1_SCLKDIR (1 << 25) /* Serial Bit Rate Clock Direction */ +#define SSCR1_SFRMDIR (1 << 24) /* Frame Direction */ +#define SSCR1_RWOT (1 << 23) /* Receive Without Transmit */ +#define SSCR1_TRAIL (1 << 22) /* Trailing Byte */ +#define SSCR1_TSRE (1 << 21) /* Transmit Service Request Enable */ +#define SSCR1_RSRE (1 << 20) /* Receive Service Request Enable */ +#define SSCR1_TINTE (1 << 19) /* Receiver Time-out Interrupt enable */ +#define SSCR1_PINTE (1 << 18) /* Peripheral Trailing Byte Interupt Enable */ +#define SSCR1_IFS (1 << 16) /* Invert Frame Signal */ +#define SSCR1_STRF (1 << 15) /* Select FIFO or EFWR */ +#define SSCR1_EFWR (1 << 14) /* Enable FIFO Write/Read */ + +#define SSSR_BCE (1 << 23) /* Bit Count Error */ +#define SSSR_CSS (1 << 22) /* Clock Synchronisation Status */ +#define SSSR_TUR (1 << 21) /* Transmit FIFO Under Run */ +#define SSSR_EOC (1 << 20) /* End Of Chain */ +#define SSSR_TINT (1 << 19) /* Receiver Time-out Interrupt */ +#define SSSR_PINT (1 << 18) /* Peripheral Trailing Byte Interrupt */ + + +#define SSPSP_SCMODE(x) ((x) << 0) /* Serial Bit Rate Clock Mode */ +#define SSPSP_SFRMP (1 << 2) /* Serial Frame Polarity */ +#define SSPSP_ETDS (1 << 3) /* End of Transfer data State */ +#define SSPSP_STRTDLY(x) ((x) << 4) /* Start Delay */ +#define SSPSP_DMYSTRT(x) ((x) << 7) /* Dummy Start */ +#define SSPSP_SFRMDLY(x) ((x) << 9) /* Serial Frame Delay */ +#define SSPSP_SFRMWDTH(x) ((x) << 16) /* Serial Frame Width */ +#define SSPSP_DMYSTOP(x) ((x) << 23) /* Dummy Stop */ +#define SSPSP_FSRT (1 << 25) /* Frame Sync Relative Timing */ + +/* PXA3xx */ +#define SSPSP_EDMYSTRT(x) ((x) << 26) /* Extended Dummy Start */ +#define SSPSP_EDMYSTOP(x) ((x) << 28) /* Extended Dummy Stop */ +#define SSPSP_TIMING_MASK (0x7f8001f0) + +#define SSACD_SCDB (1 << 3) /* SSPSYSCLK Divider Bypass */ +#define SSACD_ACPS(x) ((x) << 4) /* Audio clock PLL select */ +#define SSACD_ACDS(x) ((x) << 0) /* Audio clock divider select */ +#define SSACD_SCDX8 (1 << 7) /* SYSCLK division ratio select */ + +enum pxa_ssp_type { + SSP_UNDEFINED = 0, + PXA25x_SSP, /* pxa 210, 250, 255, 26x */ + PXA25x_NSSP, /* pxa 255, 26x (including ASSP) */ + PXA27x_SSP, + PXA168_SSP, +}; + +struct ssp_device { + struct platform_device *pdev; + struct list_head node; + + struct clk *clk; + void __iomem *mmio_base; + unsigned long phys_base; + + const char *label; + int port_id; + int type; + int use_count; + int irq; + int drcmr_rx; + int drcmr_tx; +}; + +/** + * pxa_ssp_write_reg - Write to a SSP register + * + * @dev: SSP device to access + * @reg: Register to write to + * @val: Value to be written. + */ +static inline void pxa_ssp_write_reg(struct ssp_device *dev, u32 reg, u32 val) +{ + __raw_writel(val, dev->mmio_base + reg); +} + +/** + * pxa_ssp_read_reg - Read from a SSP register + * + * @dev: SSP device to access + * @reg: Register to read from + */ +static inline u32 pxa_ssp_read_reg(struct ssp_device *dev, u32 reg) +{ + return __raw_readl(dev->mmio_base + reg); +} + +struct ssp_device *pxa_ssp_request(int port, const char *label); +void pxa_ssp_free(struct ssp_device *); +#endif diff --git a/include/linux/spi/pxa2xx_spi.h b/include/linux/spi/pxa2xx_spi.h new file mode 100644 index 000000000000..471ed6889113 --- /dev/null +++ b/include/linux/spi/pxa2xx_spi.h @@ -0,0 +1,49 @@ +/* + * Copyright (C) 2005 Stephen Street / StreetFire Sound Labs + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ +#ifndef __linux_pxa2xx_spi_h +#define __linux_pxa2xx_spi_h + +#include +#include + +#define PXA2XX_CS_ASSERT (0x01) +#define PXA2XX_CS_DEASSERT (0x02) + +/* device.platform_data for SSP controller devices */ +struct pxa2xx_spi_master { + u32 clock_enable; + u16 num_chipselect; + u8 enable_dma; +}; + +/* spi_board_info.controller_data for SPI slave devices, + * copied to spi_device.platform_data ... mostly for dma tuning + */ +struct pxa2xx_spi_chip { + u8 tx_threshold; + u8 rx_threshold; + u8 dma_burst_size; + u32 timeout; + u8 enable_loopback; + int gpio_cs; + void (*cs_control)(u32 command); +}; + +extern void pxa2xx_set_spi_info(unsigned id, struct pxa2xx_spi_master *info); + +#endif -- cgit v1.2.3 From 131d81061eba5ffd436b5d132530ac5205b16892 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Tue, 30 Nov 2010 17:03:39 +0000 Subject: ASoC: Allow user-specified WM8958 multiband compressor configurations The paramters of the WM8958 multiband compressor can be tuned by the user for their system using a graphical configuration tool on the host. Allow the user to specify a set of such paramters in platform data and select between them at runtime. Signed-off-by: Mark Brown Acked-by: Liam Girdwood --- include/linux/mfd/wm8994/pdata.h | 17 +++++++++ include/linux/mfd/wm8994/registers.h | 68 ++++++++++++++++++++++++++++++++++++ 2 files changed, 85 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/wm8994/pdata.h b/include/linux/mfd/wm8994/pdata.h index 5c51f367c061..882b51aefbc0 100644 --- a/include/linux/mfd/wm8994/pdata.h +++ b/include/linux/mfd/wm8994/pdata.h @@ -30,6 +30,8 @@ struct wm8994_ldo_pdata { #define WM8994_DRC_REGS 5 #define WM8994_EQ_REGS 19 +#define WM8958_MBC_CUTOFF_REGS 20 +#define WM8958_MBC_COEFF_REGS 48 /** * DRC configurations are specified with a label and a set of register @@ -59,6 +61,18 @@ struct wm8994_retune_mobile_cfg { u16 regs[WM8994_EQ_REGS]; }; +/** + * Multiband compressor configurations are specified with a label and + * two sets of values to write. Configurations are expected to be + * generated using the multiband compressor configuration panel in + * WISCE - see http://www.wolfsonmicro.com/wisce/ + */ +struct wm8958_mbc_cfg { + const char *name; + u16 cutoff_regs[WM8958_MBC_CUTOFF_REGS]; + u16 coeff_regs[WM8958_MBC_COEFF_REGS]; +}; + struct wm8994_pdata { int gpio_base; @@ -78,6 +92,9 @@ struct wm8994_pdata { int num_retune_mobile_cfgs; struct wm8994_retune_mobile_cfg *retune_mobile_cfgs; + int num_mbc_cfgs; + struct wm8958_mbc_cfg *mbc_cfgs; + /* LINEOUT can be differential or single ended */ unsigned int lineout1_diff:1; unsigned int lineout2_diff:1; diff --git a/include/linux/mfd/wm8994/registers.h b/include/linux/mfd/wm8994/registers.h index a610c8746436..ccf3a774fe36 100644 --- a/include/linux/mfd/wm8994/registers.h +++ b/include/linux/mfd/wm8994/registers.h @@ -258,6 +258,74 @@ #define WM8958_DSP2_VERMAJMIN 0xA04 #define WM8958_DSP2_VERBUILD 0xA05 #define WM8958_DSP2_EXECCONTROL 0xA0D +#define WM8958_MBC_BAND_2_LOWER_CUTOFF_C1_1 0x2200 +#define WM8958_MBC_BAND_2_LOWER_CUTOFF_C1_2 0x2201 +#define WM8958_MBC_BAND_2_LOWER_CUTOFF_C2_1 0x2202 +#define WM8958_MBC_BAND_2_LOWER_CUTOFF_C2_2 0x2203 +#define WM8958_MBC_BAND_2_LOWER_CUTOFF_C3_1 0x2204 +#define WM8958_MBC_BAND_2_LOWER_CUTOFF_C3_2 0x2205 +#define WM8958_MBC_BAND_2_UPPER_CUTOFF_C2_1 0x2206 +#define WM8958_MBC_BAND_2_UPPER_CUTOFF_C2_2 0x2207 +#define WM8958_MBC_BAND_2_UPPER_CUTOFF_C3_1 0x2208 +#define WM8958_MBC_BAND_2_UPPER_CUTOFF_C3_2 0x2209 +#define WM8958_MBC_BAND_2_UPPER_CUTOFF_C1_1 0x220A +#define WM8958_MBC_BAND_2_UPPER_CUTOFF_C1_2 0x220B +#define WM8958_MBC_BAND_1_UPPER_CUTOFF_C1_1 0x220C +#define WM8958_MBC_BAND_1_UPPER_CUTOFF_C1_2 0x220D +#define WM8958_MBC_BAND_1_UPPER_CUTOFF_C2_1 0x220E +#define WM8958_MBC_BAND_1_UPPER_CUTOFF_C2_2 0x220F +#define WM8958_MBC_BAND_1_UPPER_CUTOFF_C3_1 0x2210 +#define WM8958_MBC_BAND_1_UPPER_CUTOFF_C3_2 0x2211 +#define WM8958_MBC_BAND_1_LOWER_CUTOFF_1 0x2212 +#define WM8958_MBC_BAND_1_LOWER_CUTOFF_2 0x2213 +#define WM8958_MBC_BAND_1_K_1 0x2400 +#define WM8958_MBC_BAND_1_K_2 0x2401 +#define WM8958_MBC_BAND_1_N1_1 0x2402 +#define WM8958_MBC_BAND_1_N1_2 0x2403 +#define WM8958_MBC_BAND_1_N2_1 0x2404 +#define WM8958_MBC_BAND_1_N2_2 0x2405 +#define WM8958_MBC_BAND_1_N3_1 0x2406 +#define WM8958_MBC_BAND_1_N3_2 0x2407 +#define WM8958_MBC_BAND_1_N4_1 0x2408 +#define WM8958_MBC_BAND_1_N4_2 0x2409 +#define WM8958_MBC_BAND_1_N5_1 0x240A +#define WM8958_MBC_BAND_1_N5_2 0x240B +#define WM8958_MBC_BAND_1_X1_1 0x240C +#define WM8958_MBC_BAND_1_X1_2 0x240D +#define WM8958_MBC_BAND_1_X2_1 0x240E +#define WM8958_MBC_BAND_1_X2_2 0x240F +#define WM8958_MBC_BAND_1_X3_1 0x2410 +#define WM8958_MBC_BAND_1_X3_2 0x2411 +#define WM8958_MBC_BAND_1_ATTACK_1 0x2412 +#define WM8958_MBC_BAND_1_ATTACK_2 0x2413 +#define WM8958_MBC_BAND_1_DECAY_1 0x2414 +#define WM8958_MBC_BAND_1_DECAY_2 0x2415 +#define WM8958_MBC_BAND_2_K_1 0x2416 +#define WM8958_MBC_BAND_2_K_2 0x2417 +#define WM8958_MBC_BAND_2_N1_1 0x2418 +#define WM8958_MBC_BAND_2_N1_2 0x2419 +#define WM8958_MBC_BAND_2_N2_1 0x241A +#define WM8958_MBC_BAND_2_N2_2 0x241B +#define WM8958_MBC_BAND_2_N3_1 0x241C +#define WM8958_MBC_BAND_2_N3_2 0x241D +#define WM8958_MBC_BAND_2_N4_1 0x241E +#define WM8958_MBC_BAND_2_N4_2 0x241F +#define WM8958_MBC_BAND_2_N5_1 0x2420 +#define WM8958_MBC_BAND_2_N5_2 0x2421 +#define WM8958_MBC_BAND_2_X1_1 0x2422 +#define WM8958_MBC_BAND_2_X1_2 0x2423 +#define WM8958_MBC_BAND_2_X2_1 0x2424 +#define WM8958_MBC_BAND_2_X2_2 0x2425 +#define WM8958_MBC_BAND_2_X3_1 0x2426 +#define WM8958_MBC_BAND_2_X3_2 0x2427 +#define WM8958_MBC_BAND_2_ATTACK_1 0x2428 +#define WM8958_MBC_BAND_2_ATTACK_2 0x2429 +#define WM8958_MBC_BAND_2_DECAY_1 0x242A +#define WM8958_MBC_BAND_2_DECAY_2 0x242B +#define WM8958_MBC_B2_PG2_1 0x242C +#define WM8958_MBC_B2_PG2_2 0x242D +#define WM8958_MBC_B1_PG2_1 0x242E +#define WM8958_MBC_B1_PG2_2 0x242F #define WM8994_WRITE_SEQUENCER_0 0x3000 #define WM8994_WRITE_SEQUENCER_1 0x3001 #define WM8994_WRITE_SEQUENCER_2 0x3002 -- cgit v1.2.3 From d6ea3df0d470fb9260db93883f97764cf9f0e562 Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Wed, 24 Nov 2010 10:17:14 +0100 Subject: spi/pxa2xx: Add CE4100 support Sodaville's SPI controller is very much the same as in PXA25x. The difference: - The RX/TX FIFO is only 4 words deep instead of 16 - No DMA support - The SPI controller offers a CS functionality Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Dirk Brandewie --- include/linux/spi/pxa2xx_spi.h | 105 ++++++++++++++++++++++++++++++++++++++++- 1 file changed, 104 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/spi/pxa2xx_spi.h b/include/linux/spi/pxa2xx_spi.h index 471ed6889113..d3e1075f7b60 100644 --- a/include/linux/spi/pxa2xx_spi.h +++ b/include/linux/spi/pxa2xx_spi.h @@ -19,7 +19,6 @@ #define __linux_pxa2xx_spi_h #include -#include #define PXA2XX_CS_ASSERT (0x01) #define PXA2XX_CS_DEASSERT (0x02) @@ -44,6 +43,110 @@ struct pxa2xx_spi_chip { void (*cs_control)(u32 command); }; +#ifdef CONFIG_ARCH_PXA + +#include +#include + extern void pxa2xx_set_spi_info(unsigned id, struct pxa2xx_spi_master *info); +#else +/* + * This is the implemtation for CE4100 on x86. ARM defines them in mach/ or + * plat/ include path. + * The CE4100 does not provide DMA support. This bits are here to let the driver + * compile and will never be used. Maybe we get DMA support at a later point in + * time. + */ + +#define DCSR(n) (n) +#define DSADR(n) (n) +#define DTADR(n) (n) +#define DCMD(n) (n) +#define DRCMR(n) (n) + +#define DCSR_RUN (1 << 31) /* Run Bit */ +#define DCSR_NODESC (1 << 30) /* No-Descriptor Fetch */ +#define DCSR_STOPIRQEN (1 << 29) /* Stop Interrupt Enable */ +#define DCSR_REQPEND (1 << 8) /* Request Pending (read-only) */ +#define DCSR_STOPSTATE (1 << 3) /* Stop State (read-only) */ +#define DCSR_ENDINTR (1 << 2) /* End Interrupt */ +#define DCSR_STARTINTR (1 << 1) /* Start Interrupt */ +#define DCSR_BUSERR (1 << 0) /* Bus Error Interrupt */ + +#define DCSR_EORIRQEN (1 << 28) /* End of Receive Interrupt Enable */ +#define DCSR_EORJMPEN (1 << 27) /* Jump to next descriptor on EOR */ +#define DCSR_EORSTOPEN (1 << 26) /* STOP on an EOR */ +#define DCSR_SETCMPST (1 << 25) /* Set Descriptor Compare Status */ +#define DCSR_CLRCMPST (1 << 24) /* Clear Descriptor Compare Status */ +#define DCSR_CMPST (1 << 10) /* The Descriptor Compare Status */ +#define DCSR_EORINTR (1 << 9) /* The end of Receive */ + +#define DRCMR_MAPVLD (1 << 7) /* Map Valid */ +#define DRCMR_CHLNUM 0x1f /* mask for Channel Number */ + +#define DDADR_DESCADDR 0xfffffff0 /* Address of next descriptor */ +#define DDADR_STOP (1 << 0) /* Stop */ + +#define DCMD_INCSRCADDR (1 << 31) /* Source Address Increment Setting. */ +#define DCMD_INCTRGADDR (1 << 30) /* Target Address Increment Setting. */ +#define DCMD_FLOWSRC (1 << 29) /* Flow Control by the source. */ +#define DCMD_FLOWTRG (1 << 28) /* Flow Control by the target. */ +#define DCMD_STARTIRQEN (1 << 22) /* Start Interrupt Enable */ +#define DCMD_ENDIRQEN (1 << 21) /* End Interrupt Enable */ +#define DCMD_ENDIAN (1 << 18) /* Device Endian-ness. */ +#define DCMD_BURST8 (1 << 16) /* 8 byte burst */ +#define DCMD_BURST16 (2 << 16) /* 16 byte burst */ +#define DCMD_BURST32 (3 << 16) /* 32 byte burst */ +#define DCMD_WIDTH1 (1 << 14) /* 1 byte width */ +#define DCMD_WIDTH2 (2 << 14) /* 2 byte width (HalfWord) */ +#define DCMD_WIDTH4 (3 << 14) /* 4 byte width (Word) */ +#define DCMD_LENGTH 0x01fff /* length mask (max = 8K - 1) */ + +/* + * Descriptor structure for PXA's DMA engine + * Note: this structure must always be aligned to a 16-byte boundary. + */ + +typedef enum { + DMA_PRIO_HIGH = 0, + DMA_PRIO_MEDIUM = 1, + DMA_PRIO_LOW = 2 +} pxa_dma_prio; + +/* + * DMA registration + */ + +static inline int pxa_request_dma(char *name, + pxa_dma_prio prio, + void (*irq_handler)(int, void *), + void *data) +{ + return -ENODEV; +} + +static inline void pxa_free_dma(int dma_ch) +{ +} + +/* + * The CE4100 does not have the clk framework implemented and SPI clock can + * not be switched on/off or the divider changed. + */ +static inline void clk_disable(struct clk *clk) +{ +} + +static inline int clk_enable(struct clk *clk) +{ + return 0; +} + +static inline unsigned long clk_get_rate(struct clk *clk) +{ + return 3686400; +} + +#endif #endif -- cgit v1.2.3 From d0777f2c3eda180e3fc549e0efbe741014f17689 Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Mon, 22 Nov 2010 17:12:16 -0800 Subject: spi/pxa2xx: Consider CE4100's FIFO depth For PXA the default threshold is FIFO_DEPTH / 2. Adjust this value for CE4100. Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Dirk Brandewie --- include/linux/pxa2xx_ssp.h | 32 ++++++++++++++++++++++++++------ 1 file changed, 26 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/pxa2xx_ssp.h b/include/linux/pxa2xx_ssp.h index 84465d4a51b7..c3aa334cbb9b 100644 --- a/include/linux/pxa2xx_ssp.h +++ b/include/linux/pxa2xx_ssp.h @@ -71,10 +71,6 @@ #define SSCR1_SPO (1 << 3) /* Motorola SPI SSPSCLK polarity setting */ #define SSCR1_SPH (1 << 4) /* Motorola SPI SSPSCLK phase setting */ #define SSCR1_MWDS (1 << 5) /* Microwire Transmit Data Size */ -#define SSCR1_TFT (0x000003c0) /* Transmit FIFO Threshold (mask) */ -#define SSCR1_TxTresh(x) (((x) - 1) << 6) /* level [1..16] */ -#define SSCR1_RFT (0x00003c00) /* Receive FIFO Threshold (mask) */ -#define SSCR1_RxTresh(x) (((x) - 1) << 10) /* level [1..16] */ #define SSSR_TNF (1 << 2) /* Transmit FIFO Not Full */ #define SSSR_RNE (1 << 3) /* Receive FIFO Not Empty */ @@ -82,8 +78,32 @@ #define SSSR_TFS (1 << 5) /* Transmit FIFO Service Request */ #define SSSR_RFS (1 << 6) /* Receive FIFO Service Request */ #define SSSR_ROR (1 << 7) /* Receive FIFO Overrun */ -#define SSSR_TFL_MASK (0xf << 8) /* Transmit FIFO Level mask */ -#define SSSR_RFL_MASK (0xf << 12) /* Receive FIFO Level mask */ + +#ifdef CONFIG_ARCH_PXA +#define RX_THRESH_DFLT 8 +#define TX_THRESH_DFLT 8 + +#define SSSR_TFL_MASK (0xf << 8) /* Transmit FIFO Level mask */ +#define SSSR_RFL_MASK (0xf << 12) /* Receive FIFO Level mask */ + +#define SSCR1_TFT (0x000003c0) /* Transmit FIFO Threshold (mask) */ +#define SSCR1_TxTresh(x) (((x) - 1) << 6) /* level [1..16] */ +#define SSCR1_RFT (0x00003c00) /* Receive FIFO Threshold (mask) */ +#define SSCR1_RxTresh(x) (((x) - 1) << 10) /* level [1..16] */ + +#else + +#define RX_THRESH_DFLT 2 +#define TX_THRESH_DFLT 2 + +#define SSSR_TFL_MASK (0x3 << 8) /* Transmit FIFO Level mask */ +#define SSSR_RFL_MASK (0x3 << 12) /* Receive FIFO Level mask */ + +#define SSCR1_TFT (0x000000c0) /* Transmit FIFO Threshold (mask) */ +#define SSCR1_TxTresh(x) (((x) - 1) << 6) /* level [1..4] */ +#define SSCR1_RFT (0x00000c00) /* Receive FIFO Threshold (mask) */ +#define SSCR1_RxTresh(x) (((x) - 1) << 10) /* level [1..4] */ +#endif /* extra bits in PXA255, PXA26x and PXA27x SSP ports */ #define SSCR0_TISSP (1 << 4) /* TI Sync Serial Protocol */ -- cgit v1.2.3 From f2cd2d3e9b3ef960612e362f0ad129d735452df2 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Mon, 29 Nov 2010 08:14:37 +0000 Subject: net sched: use xps information for qdisc NUMA affinity Allocate qdisc memory according to NUMA properties of cpus included in xps map. To be effective, qdisc should be (re)setup after changes of /sys/class/net/eth/queues/tx-/xps_cpus I added a numa_node field in struct netdev_queue, containing NUMA node if all cpus included in xps_cpus share same node, else -1. Signed-off-by: Eric Dumazet Cc: Ben Hutchings Cc: Tom Herbert Signed-off-by: David S. Miller --- include/linux/netdevice.h | 20 +++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 4b0c7f3aa32b..a9ac5dc26e3c 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -508,7 +508,9 @@ struct netdev_queue { #ifdef CONFIG_RPS struct kobject kobj; #endif - +#if defined(CONFIG_XPS) && defined(CONFIG_NUMA) + int numa_node; +#endif /* * write mostly part */ @@ -523,6 +525,22 @@ struct netdev_queue { u64 tx_dropped; } ____cacheline_aligned_in_smp; +static inline int netdev_queue_numa_node_read(const struct netdev_queue *q) +{ +#if defined(CONFIG_XPS) && defined(CONFIG_NUMA) + return q->numa_node; +#else + return -1; +#endif +} + +static inline void netdev_queue_numa_node_write(struct netdev_queue *q, int node) +{ +#if defined(CONFIG_XPS) && defined(CONFIG_NUMA) + q->numa_node = node; +#endif +} + #ifdef CONFIG_RPS /* * This structure holds an RPS map which can be of variable length. The -- cgit v1.2.3 From 8bc3c2c207dc82d47ffc6ef7b788e04ea637d3f1 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Tue, 30 Nov 2010 14:56:18 +0000 Subject: ASoC: Tune performance of WM8958 revision A Update some of the default configuration for the device to improve the performance. Signed-off-by: Mark Brown Acked-by: Liam Girdwood --- include/linux/mfd/wm8994/registers.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/wm8994/registers.h b/include/linux/mfd/wm8994/registers.h index ccf3a774fe36..be072faec6f0 100644 --- a/include/linux/mfd/wm8994/registers.h +++ b/include/linux/mfd/wm8994/registers.h @@ -64,6 +64,7 @@ #define WM8994_LDO_1 0x3B #define WM8994_LDO_2 0x3C #define WM8994_CHARGE_PUMP_1 0x4C +#define WM8958_CHARGE_PUMP_2 0x4D #define WM8994_CLASS_W_1 0x51 #define WM8994_DC_SERVO_1 0x54 #define WM8994_DC_SERVO_2 0x55 @@ -1925,6 +1926,14 @@ #define WM8994_CP_ENA_SHIFT 15 /* CP_ENA */ #define WM8994_CP_ENA_WIDTH 1 /* CP_ENA */ +/* + * R77 (0x4D) - Charge Pump (2) + */ +#define WM8958_CP_DISCH 0x8000 /* CP_DISCH */ +#define WM8958_CP_DISCH_MASK 0x8000 /* CP_DISCH */ +#define WM8958_CP_DISCH_SHIFT 15 /* CP_DISCH */ +#define WM8958_CP_DISCH_WIDTH 1 /* CP_DISCH */ + /* * R81 (0x51) - Class W (1) */ -- cgit v1.2.3 From 676dac4b1bee0469d6932f698aeb77e8489f5861 Mon Sep 17 00:00:00 2001 From: Casey Schaufler Date: Thu, 2 Dec 2010 06:43:39 -0800 Subject: This patch adds a new security attribute to Smack called SMACK64EXEC. It defines label that is used while task is running. Exception: in smack_task_wait() child task is checked for write access to parent task using label inherited from the task that forked it. Fixed issues from previous submit: - SMACK64EXEC was not read when SMACK64 was not set. - inode security blob was not updated after setting SMACK64EXEC - inode security blob was not updated when removing SMACK64EXEC --- include/linux/xattr.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/xattr.h b/include/linux/xattr.h index f1e5bde4b35a..351c7901d74a 100644 --- a/include/linux/xattr.h +++ b/include/linux/xattr.h @@ -40,9 +40,11 @@ #define XATTR_SMACK_SUFFIX "SMACK64" #define XATTR_SMACK_IPIN "SMACK64IPIN" #define XATTR_SMACK_IPOUT "SMACK64IPOUT" +#define XATTR_SMACK_EXEC "SMACK64EXEC" #define XATTR_NAME_SMACK XATTR_SECURITY_PREFIX XATTR_SMACK_SUFFIX #define XATTR_NAME_SMACKIPIN XATTR_SECURITY_PREFIX XATTR_SMACK_IPIN #define XATTR_NAME_SMACKIPOUT XATTR_SECURITY_PREFIX XATTR_SMACK_IPOUT +#define XATTR_NAME_SMACKEXEC XATTR_SECURITY_PREFIX XATTR_SMACK_EXEC #define XATTR_CAPS_SUFFIX "capability" #define XATTR_NAME_CAPS XATTR_SECURITY_PREFIX XATTR_CAPS_SUFFIX -- cgit v1.2.3 From 6072d13c429373c5d63b69dadbbef40a9b035552 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Wed, 1 Dec 2010 13:35:19 -0500 Subject: Call the filesystem back whenever a page is removed from the page cache NFS needs to be able to release objects that are stored in the page cache once the page itself is no longer visible from the page cache. This patch adds a callback to the address space operations that allows filesystems to perform page cleanups once the page has been removed from the page cache. Original patch by: Linus Torvalds [trondmy: cover the cases of invalidate_inode_pages2() and truncate_inode_pages()] Signed-off-by: Trond Myklebust --- include/linux/fs.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index c9e06cc70dad..090f0eacde29 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -602,6 +602,7 @@ struct address_space_operations { sector_t (*bmap)(struct address_space *, sector_t); void (*invalidatepage) (struct page *, unsigned long); int (*releasepage) (struct page *, gfp_t); + void (*freepage)(struct page *); ssize_t (*direct_IO)(int, struct kiocb *, const struct iovec *iov, loff_t offset, unsigned long nr_segs); int (*get_xip_mem)(struct address_space *, pgoff_t, int, -- cgit v1.2.3 From 11de3b11e08cac26d59e88efaf4e316701883552 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Wed, 1 Dec 2010 14:17:06 -0500 Subject: NFS: Fix a memory leak in nfs_readdir We need to ensure that the entries in the nfs_cache_array get cleared when the page is removed from the page cache. To do so, we use the freepage address_space operation. Change nfs_readdir_clear_array to use kmap_atomic(), so that the function can be safely called from all contexts. Finally, modify the cache_page_release helper to call nfs_readdir_clear_array directly, when dealing with an anonymous page from 'uncached_readdir'. Signed-off-by: Trond Myklebust --- include/linux/nfs_fs.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h index c66fdb7d6998..29d504d5d1c3 100644 --- a/include/linux/nfs_fs.h +++ b/include/linux/nfs_fs.h @@ -401,6 +401,7 @@ extern const struct inode_operations nfs3_file_inode_operations; #endif /* CONFIG_NFS_V3 */ extern const struct file_operations nfs_file_operations; extern const struct address_space_operations nfs_file_aops; +extern const struct address_space_operations nfs_dir_aops; static inline struct nfs_open_context *nfs_file_open_context(struct file *filp) { -- cgit v1.2.3 From 2a8626a9e2d86d114a2d9f813a1acebf9d53dd10 Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Mon, 22 Nov 2010 17:12:17 -0800 Subject: spi/pxa2xx: Add chipselect support for Sodaville The SPI core on Sodaville supports chip selects. Its configuration moved into the SSSR register at bit 0 and 1. Thus Sodaville can be hooked up with up to 4 devices. This patch ensures that the bits which are otherwiese reserved are only touched on Sodaville and not on any other PXAs. Also it makes sure that the status register does not lose the CS information while clearing the ROR bit. Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Dirk Brandewie --- include/linux/pxa2xx_ssp.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pxa2xx_ssp.h b/include/linux/pxa2xx_ssp.h index c3aa334cbb9b..2f691e4e6222 100644 --- a/include/linux/pxa2xx_ssp.h +++ b/include/linux/pxa2xx_ssp.h @@ -72,6 +72,7 @@ #define SSCR1_SPH (1 << 4) /* Motorola SPI SSPSCLK phase setting */ #define SSCR1_MWDS (1 << 5) /* Microwire Transmit Data Size */ +#define SSSR_ALT_FRM_MASK 3 /* Masks the SFRM signal number */ #define SSSR_TNF (1 << 2) /* Transmit FIFO Not Full */ #define SSSR_RNE (1 << 3) /* Receive FIFO Not Empty */ #define SSSR_BSY (1 << 4) /* SSP Busy */ @@ -160,6 +161,7 @@ enum pxa_ssp_type { PXA25x_NSSP, /* pxa 255, 26x (including ASSP) */ PXA27x_SSP, PXA168_SSP, + CE4100_SSP, }; struct ssp_device { -- cgit v1.2.3 From 172c69a47675dc1ca9c7243c031d8d77701bccc0 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Sun, 28 Nov 2010 10:39:35 +0100 Subject: ssb: extract indexes for power tables MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Rafał Miłecki Acked-by: Michael Buesch Signed-off-by: John W. Linville --- include/linux/ssb/ssb.h | 4 ++++ include/linux/ssb/ssb_regs.h | 40 ++++++++++++++++++++++++++++++++++++++++ 2 files changed, 44 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ssb/ssb.h b/include/linux/ssb/ssb.h index 623b704fdc42..9659eff52ca2 100644 --- a/include/linux/ssb/ssb.h +++ b/include/linux/ssb/ssb.h @@ -55,6 +55,10 @@ struct ssb_sprom { u8 tri5gl; /* 5.2GHz TX isolation */ u8 tri5g; /* 5.3GHz TX isolation */ u8 tri5gh; /* 5.8GHz TX isolation */ + u8 txpid2g[4]; /* 2GHz TX power index */ + u8 txpid5gl[4]; /* 4.9 - 5.1GHz TX power index */ + u8 txpid5g[4]; /* 5.1 - 5.5GHz TX power index */ + u8 txpid5gh[4]; /* 5.5 - ...GHz TX power index */ u8 rxpo2g; /* 2GHz RX power offset */ u8 rxpo5g; /* 5GHz RX power offset */ u8 rssisav2g; /* 2GHz RSSI params */ diff --git a/include/linux/ssb/ssb_regs.h b/include/linux/ssb/ssb_regs.h index 11daf9c140e7..489f7b6d61c5 100644 --- a/include/linux/ssb/ssb_regs.h +++ b/include/linux/ssb/ssb_regs.h @@ -299,6 +299,46 @@ #define SSB_SPROM4_AGAIN2_SHIFT 0 #define SSB_SPROM4_AGAIN3 0xFF00 /* Antenna 3 */ #define SSB_SPROM4_AGAIN3_SHIFT 8 +#define SSB_SPROM4_TXPID2G01 0x0062 /* TX Power Index 2GHz */ +#define SSB_SPROM4_TXPID2G0 0x00FF +#define SSB_SPROM4_TXPID2G0_SHIFT 0 +#define SSB_SPROM4_TXPID2G1 0xFF00 +#define SSB_SPROM4_TXPID2G1_SHIFT 8 +#define SSB_SPROM4_TXPID2G23 0x0064 /* TX Power Index 2GHz */ +#define SSB_SPROM4_TXPID2G2 0x00FF +#define SSB_SPROM4_TXPID2G2_SHIFT 0 +#define SSB_SPROM4_TXPID2G3 0xFF00 +#define SSB_SPROM4_TXPID2G3_SHIFT 8 +#define SSB_SPROM4_TXPID5G01 0x0066 /* TX Power Index 5GHz middle subband */ +#define SSB_SPROM4_TXPID5G0 0x00FF +#define SSB_SPROM4_TXPID5G0_SHIFT 0 +#define SSB_SPROM4_TXPID5G1 0xFF00 +#define SSB_SPROM4_TXPID5G1_SHIFT 8 +#define SSB_SPROM4_TXPID5G23 0x0068 /* TX Power Index 5GHz middle subband */ +#define SSB_SPROM4_TXPID5G2 0x00FF +#define SSB_SPROM4_TXPID5G2_SHIFT 0 +#define SSB_SPROM4_TXPID5G3 0xFF00 +#define SSB_SPROM4_TXPID5G3_SHIFT 8 +#define SSB_SPROM4_TXPID5GL01 0x006A /* TX Power Index 5GHz low subband */ +#define SSB_SPROM4_TXPID5GL0 0x00FF +#define SSB_SPROM4_TXPID5GL0_SHIFT 0 +#define SSB_SPROM4_TXPID5GL1 0xFF00 +#define SSB_SPROM4_TXPID5GL1_SHIFT 8 +#define SSB_SPROM4_TXPID5GL23 0x006C /* TX Power Index 5GHz low subband */ +#define SSB_SPROM4_TXPID5GL2 0x00FF +#define SSB_SPROM4_TXPID5GL2_SHIFT 0 +#define SSB_SPROM4_TXPID5GL3 0xFF00 +#define SSB_SPROM4_TXPID5GL3_SHIFT 8 +#define SSB_SPROM4_TXPID5GH01 0x006E /* TX Power Index 5GHz high subband */ +#define SSB_SPROM4_TXPID5GH0 0x00FF +#define SSB_SPROM4_TXPID5GH0_SHIFT 0 +#define SSB_SPROM4_TXPID5GH1 0xFF00 +#define SSB_SPROM4_TXPID5GH1_SHIFT 8 +#define SSB_SPROM4_TXPID5GH23 0x0070 /* TX Power Index 5GHz high subband */ +#define SSB_SPROM4_TXPID5GH2 0x00FF +#define SSB_SPROM4_TXPID5GH2_SHIFT 0 +#define SSB_SPROM4_TXPID5GH3 0xFF00 +#define SSB_SPROM4_TXPID5GH3_SHIFT 8 #define SSB_SPROM4_MAXP_BG 0x0080 /* Max Power BG in path 1 */ #define SSB_SPROM4_MAXP_BG_MASK 0x00FF /* Mask for Max Power BG */ #define SSB_SPROM4_ITSSI_BG 0xFF00 /* Mask for path 1 itssi_bg */ -- cgit v1.2.3 From 87de5ac782761a3ebf806e434e8c9cc205a87274 Mon Sep 17 00:00:00 2001 From: John Stultz Date: Mon, 20 Sep 2010 17:42:46 -0700 Subject: timers: Introduce timerlist infrastructure. The timerlist infrastructure is a thin layer over the rbtree code that implements a simple list of timers sorted by an expires value, and a getnext function that provides a pointer to the earliest timer. This infrastructure allows drivers and other kernel infrastructure to easily implement timers without duplicating code. Signed-off-by: John Stultz LKML Reference: <1290136329-18291-2-git-send-email-john.stultz@linaro.org> Reviewed-by: Thomas Gleixner CC: Alessandro Zummo CC: Thomas Gleixner CC: Richard Cochran --- include/linux/timerlist.h | 37 +++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 include/linux/timerlist.h (limited to 'include/linux') diff --git a/include/linux/timerlist.h b/include/linux/timerlist.h new file mode 100644 index 000000000000..c46b28ae6e4d --- /dev/null +++ b/include/linux/timerlist.h @@ -0,0 +1,37 @@ +#ifndef _LINUX_TIMERLIST_H +#define _LINUX_TIMERLIST_H + +#include +#include + + +struct timerlist_node { + struct rb_node node; + ktime_t expires; +}; + +struct timerlist_head { + struct rb_root head; + struct timerlist_node *next; +}; + + +extern void timerlist_add(struct timerlist_head *head, + struct timerlist_node *node); +extern void timerlist_del(struct timerlist_head *head, + struct timerlist_node *node); +extern struct timerlist_node *timerlist_getnext(struct timerlist_head *head); +extern struct timerlist_node *timerlist_iterate_next( + struct timerlist_node *node); + +static inline void timerlist_init(struct timerlist_node *node) +{ + RB_CLEAR_NODE(&node->node); +} + +static inline void timerlist_init_head(struct timerlist_head *head) +{ + head->head = RB_ROOT; + head->next = NULL; +} +#endif /* _LINUX_TIMERLIST_H */ -- cgit v1.2.3 From f689b34bfbd2154a8fa255060dd872a6db3b4742 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Miloslav=20Trma=C4=8D?= Date: Fri, 3 Dec 2010 13:51:52 +0800 Subject: include: Install linux/if_alg.h for user-space crypto API MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Miloslav Trmač Signed-off-by: Herbert Xu --- include/linux/Kbuild | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/Kbuild b/include/linux/Kbuild index 831c4634162c..b3cca8c88e86 100644 --- a/include/linux/Kbuild +++ b/include/linux/Kbuild @@ -154,6 +154,7 @@ header-y += icmpv6.h header-y += if.h header-y += if_addr.h header-y += if_addrlabel.h +header-y += if_alg.h header-y += if_arcnet.h header-y += if_arp.h header-y += if_bonding.h -- cgit v1.2.3 From 287050d390264402e11bea8b811859e42e8faa29 Mon Sep 17 00:00:00 2001 From: Steven Rostedt Date: Thu, 2 Dec 2010 16:46:18 -0500 Subject: tracing: Add TRACE_EVENT_CONDITIONAL() There are instances in the kernel that we only want to trace a tracepoint when a certain condition is set. But we do not want to test for that condition in the core kernel. If we test for that condition before calling the tracepoin, then we will be performing that test even when tracing is not enabled. This is 99.99% of the time. We currently can just filter out on that condition, but that happens after we write to the trace buffer. We just wasted time writing to the ring buffer for an event we never cared about. This patch adds: TRACE_EVENT_CONDITION() and DEFINE_EVENT_CONDITION() These have a new TP_CONDITION() argument that comes right after the TP_ARGS(). This condition can use the parameters of TP_ARGS() in the TRACE_EVENT() to determine if the tracepoint should be traced or not. The TP_CONDITION() will be placed in a if (cond) trace; For example, for the tracepoint sched_wakeup, it is useless to trace a wakeup event where the caller never actually wakes anything up (where success == 0). So adding: TP_CONDITION(success), which uses the "success" parameter of the wakeup tracepoint will have it only trace when we have successfully woken up a task. Acked-by: Mathieu Desnoyers Acked-by: Frederic Weisbecker Cc: Arjan van de Ven Cc: Thomas Gleixner Signed-off-by: Steven Rostedt --- include/linux/tracepoint.h | 29 +++++++++++++++++++++++------ 1 file changed, 23 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/tracepoint.h b/include/linux/tracepoint.h index 5a6074fcd81d..d3e4f87e95c0 100644 --- a/include/linux/tracepoint.h +++ b/include/linux/tracepoint.h @@ -106,6 +106,7 @@ static inline void tracepoint_update_probe_range(struct tracepoint *begin, #define TP_PROTO(args...) args #define TP_ARGS(args...) args +#define TP_CONDITION(args...) args #ifdef CONFIG_TRACEPOINTS @@ -119,12 +120,14 @@ static inline void tracepoint_update_probe_range(struct tracepoint *begin, * as "(void *, void)". The DECLARE_TRACE_NOARGS() will pass in just * "void *data", where as the DECLARE_TRACE() will pass in "void *data, proto". */ -#define __DO_TRACE(tp, proto, args) \ +#define __DO_TRACE(tp, proto, args, cond) \ do { \ struct tracepoint_func *it_func_ptr; \ void *it_func; \ void *__data; \ \ + if (!(cond)) \ + return; \ rcu_read_lock_sched_notrace(); \ it_func_ptr = rcu_dereference_sched((tp)->funcs); \ if (it_func_ptr) { \ @@ -142,7 +145,7 @@ static inline void tracepoint_update_probe_range(struct tracepoint *begin, * not add unwanted padding between the beginning of the section and the * structure. Force alignment to the same alignment as the section start. */ -#define __DECLARE_TRACE(name, proto, args, data_proto, data_args) \ +#define __DECLARE_TRACE(name, proto, args, cond, data_proto, data_args) \ extern struct tracepoint __tracepoint_##name; \ static inline void trace_##name(proto) \ { \ @@ -151,7 +154,8 @@ static inline void tracepoint_update_probe_range(struct tracepoint *begin, do_trace: \ __DO_TRACE(&__tracepoint_##name, \ TP_PROTO(data_proto), \ - TP_ARGS(data_args)); \ + TP_ARGS(data_args), \ + TP_CONDITION(cond)); \ } \ static inline int \ register_trace_##name(void (*probe)(data_proto), void *data) \ @@ -186,7 +190,7 @@ do_trace: \ EXPORT_SYMBOL(__tracepoint_##name) #else /* !CONFIG_TRACEPOINTS */ -#define __DECLARE_TRACE(name, proto, args, data_proto, data_args) \ +#define __DECLARE_TRACE(name, proto, args, cond, data_proto, data_args) \ static inline void trace_##name(proto) \ { } \ static inline int \ @@ -227,13 +231,18 @@ do_trace: \ * "void *__data, proto" as the callback prototype. */ #define DECLARE_TRACE_NOARGS(name) \ - __DECLARE_TRACE(name, void, , void *__data, __data) + __DECLARE_TRACE(name, void, , 1, void *__data, __data) #define DECLARE_TRACE(name, proto, args) \ - __DECLARE_TRACE(name, PARAMS(proto), PARAMS(args), \ + __DECLARE_TRACE(name, PARAMS(proto), PARAMS(args), 1, \ PARAMS(void *__data, proto), \ PARAMS(__data, args)) +#define DECLARE_TRACE_CONDITION(name, proto, args, cond) \ + __DECLARE_TRACE(name, PARAMS(proto), PARAMS(args), PARAMS(cond), \ + PARAMS(void *__data, proto), \ + PARAMS(__data, args)) + #define TRACE_EVENT_FLAGS(event, flag) #endif /* DECLARE_TRACE */ @@ -349,12 +358,20 @@ do_trace: \ DECLARE_TRACE(name, PARAMS(proto), PARAMS(args)) #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ DECLARE_TRACE(name, PARAMS(proto), PARAMS(args)) +#define DEFINE_EVENT_CONDITION(template, name, proto, \ + args, cond) \ + DECLARE_TRACE_CONDITION(name, PARAMS(proto), \ + PARAMS(args), PARAMS(cond)) #define TRACE_EVENT(name, proto, args, struct, assign, print) \ DECLARE_TRACE(name, PARAMS(proto), PARAMS(args)) #define TRACE_EVENT_FN(name, proto, args, struct, \ assign, print, reg, unreg) \ DECLARE_TRACE(name, PARAMS(proto), PARAMS(args)) +#define TRACE_EVENT_CONDITION(name, proto, args, cond, \ + struct, assign, print) \ + DECLARE_TRACE_CONDITION(name, PARAMS(proto), \ + PARAMS(args), PARAMS(cond)) #define TRACE_EVENT_FLAGS(event, flag) -- cgit v1.2.3 From 3e3198f1adda8e0fbd499bde806781237d6c841f Mon Sep 17 00:00:00 2001 From: Roman Tereshonkov Date: Wed, 3 Nov 2010 12:55:19 +0200 Subject: mtd: onenand: add option and variable for cache program feature A new option is added for cache program feature. A new variable ongoing is introduced for onenand_chip to handle the multi-command cache program operation. Signed-off-by: Roman Tereshonkov Acked-by: Kyungmin Park Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- include/linux/mtd/onenand.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mtd/onenand.h b/include/linux/mtd/onenand.h index 0c8815bfae1c..6da3fe314828 100644 --- a/include/linux/mtd/onenand.h +++ b/include/linux/mtd/onenand.h @@ -137,6 +137,14 @@ struct onenand_chip { void *bbm; void *priv; + + /* + * Shows that the current operation is composed + * of sequence of commands. For example, cache program. + * Such command status OnGo bit is checked at the end of + * sequence. + */ + unsigned int ongoing; }; /* @@ -171,6 +179,9 @@ struct onenand_chip { #define ONENAND_IS_2PLANE(this) (0) #endif +#define ONENAND_IS_CACHE_PROGRAM(this) \ + (this->options & ONENAND_HAS_CACHE_PROGRAM) + /* Check byte access in OneNAND */ #define ONENAND_CHECK_BYTE_ACCESS(addr) (addr & 0x1) @@ -181,6 +192,7 @@ struct onenand_chip { #define ONENAND_HAS_UNLOCK_ALL (0x0002) #define ONENAND_HAS_2PLANE (0x0004) #define ONENAND_HAS_4KB_PAGE (0x0008) +#define ONENAND_HAS_CACHE_PROGRAM (0x0010) #define ONENAND_SKIP_UNLOCK_CHECK (0x0100) #define ONENAND_PAGEBUF_ALLOC (0x1000) #define ONENAND_OOBBUF_ALLOC (0x2000) -- cgit v1.2.3 From 65ab220c30bc2120eaa39753cadec68616e3f906 Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Mon, 8 Nov 2010 11:17:54 +0530 Subject: mtd: fsmc.h: including linux/io.h for definition of readl Signed-off-by: Viresh Kumar Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- include/linux/mtd/fsmc.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/mtd/fsmc.h b/include/linux/mtd/fsmc.h index 5d2556700ec2..e210b87e6cd6 100644 --- a/include/linux/mtd/fsmc.h +++ b/include/linux/mtd/fsmc.h @@ -16,6 +16,7 @@ #ifndef __MTD_FSMC_H #define __MTD_FSMC_H +#include #include #include #include -- cgit v1.2.3 From cc31822250236ec173bb2aa149ebe2ba35405db2 Mon Sep 17 00:00:00 2001 From: Guillaume LECERF Date: Wed, 17 Nov 2010 12:35:50 +0100 Subject: mtd: cfi_fixup: remove unused 'param' parameter The 'param' parameter has never been used since its introduction, so simply remove it. Signed-off-by: Guillaume LECERF Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- include/linux/mtd/cfi.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mtd/cfi.h b/include/linux/mtd/cfi.h index 4dd0c2cd7659..a9baee6864af 100644 --- a/include/linux/mtd/cfi.h +++ b/include/linux/mtd/cfi.h @@ -527,8 +527,7 @@ struct cfi_extquery *cfi_read_pri(struct map_info *map, uint16_t adr, uint16_t s struct cfi_fixup { uint16_t mfr; uint16_t id; - void (*fixup)(struct mtd_info *mtd, void* param); - void* param; + void (*fixup)(struct mtd_info *mtd); }; #define CFI_MFR_ANY 0xFFFF -- cgit v1.2.3 From 1534b8b09757190ce6e97fa97f9ad77c49082cd8 Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Thu, 18 Nov 2010 15:02:21 -0800 Subject: mtd: fix nand kernel-doc warnings Warning(include/linux/mtd/nand.h:543): No description found for parameter 'badblockbits' Warning(drivers/mtd/nand/nand_bbt.c:1101): No description found for parameter 'mtd' Signed-off-by: Randy Dunlap Cc: David Woodhouse Cc: linux-mtd@lists.infradead.org Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- include/linux/mtd/nand.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 63e17d01fde9..1f489b247a29 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -448,6 +448,8 @@ struct nand_buffers { * See the defines for further explanation. * @badblockpos: [INTERN] position of the bad block marker in the oob * area. + * @badblockbits: [INTERN] number of bits to left-shift the bad block + * number * @cellinfo: [INTERN] MLC/multichip data from chip ident * @numchips: [INTERN] number of physical chips * @chipsize: [INTERN] the size of one chip for multichip arrays -- cgit v1.2.3 From a7e93dcd9aacb3ef4acfcc4310577f3ae0741821 Mon Sep 17 00:00:00 2001 From: Roman Tereshonkov Date: Tue, 23 Nov 2010 14:17:17 +0200 Subject: mtd: fix master device identification for mtd repartition Function mtd_has_master renamed as mtd_is_partition to follow the function logic. The patch fixes the problem of checking the right mtd device for partition creation. To delete partition checking is not needed here so as it is done in mtd_del_partition. By master we consider the mtd device which does not belong to any partition. Signed-off-by: Roman Tereshonkov Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- include/linux/mtd/partitions.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mtd/partitions.h b/include/linux/mtd/partitions.h index 2b54316591d2..4a0a8ba90a72 100644 --- a/include/linux/mtd/partitions.h +++ b/include/linux/mtd/partitions.h @@ -89,7 +89,7 @@ static inline int mtd_has_cmdlinepart(void) { return 1; } static inline int mtd_has_cmdlinepart(void) { return 0; } #endif -int mtd_is_master(struct mtd_info *mtd); +int mtd_is_partition(struct mtd_info *mtd); int mtd_add_partition(struct mtd_info *master, char *name, long long offset, long long length); int mtd_del_partition(struct mtd_info *master, int partno); -- cgit v1.2.3 From 593cd8711221c9661dbf9beb2fb42fecca03e693 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Mon, 29 Nov 2010 13:52:19 +0100 Subject: mtd: FSMC NAND use the PrimeCell identifier macros The FSMC actually has a standard ARM PrimeCell ID register, and the "revision" part of that register contains the thing that the code is looking at. Reuse the infrastructure from the AMBA bus abstraction and rid local defines. Signed-off-by: Linus Walleij Signed-off-by: David Woodhouse --- include/linux/mtd/fsmc.h | 19 ------------------- 1 file changed, 19 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mtd/fsmc.h b/include/linux/mtd/fsmc.h index e210b87e6cd6..96e8e67a053e 100644 --- a/include/linux/mtd/fsmc.h +++ b/include/linux/mtd/fsmc.h @@ -115,25 +115,6 @@ struct fsmc_regs { #define FSMC_THOLD_4 (4 << 16) #define FSMC_THIZ_1 (1 << 24) -/* peripid2 register definitions */ -#define FSMC_REVISION_MSK (0xf) -#define FSMC_REVISION_SHFT (0x4) - -#define FSMC_VER1 1 -#define FSMC_VER2 2 -#define FSMC_VER3 3 -#define FSMC_VER4 4 -#define FSMC_VER5 5 -#define FSMC_VER6 6 -#define FSMC_VER7 7 -#define FSMC_VER8 8 - -static inline uint32_t get_fsmc_version(struct fsmc_regs *regs) -{ - return (readl(®s->peripid2) >> FSMC_REVISION_SHFT) & - FSMC_REVISION_MSK; -} - /* * There are 13 bytes of ecc for every 512 byte block in FSMC version 8 * and it has to be read consecutively and immediately after the 512 -- cgit v1.2.3 From b5602e86432aaf0cc90dd207bf74e3a2bfb5078b Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Mon, 29 Nov 2010 13:52:27 +0100 Subject: mtd: FSMC NAND fix obvious speling errors Fix spelling in the interface file. Signed-off-by: Linus Walleij Signed-off-by: David Woodhouse --- include/linux/mtd/fsmc.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mtd/fsmc.h b/include/linux/mtd/fsmc.h index 96e8e67a053e..6987995ad3cf 100644 --- a/include/linux/mtd/fsmc.h +++ b/include/linux/mtd/fsmc.h @@ -28,7 +28,7 @@ /* * The placement of the Command Latch Enable (CLE) and - * Address Latch Enable (ALE) is twised around in the + * Address Latch Enable (ALE) is twisted around in the * SPEAR310 implementation. */ #if defined(CONFIG_MACH_SPEAR310) @@ -63,7 +63,7 @@ struct fsmc_nor_bank_regs { /* ctrl_tim register definitions */ -struct fsms_nand_bank_regs { +struct fsmc_nand_bank_regs { uint32_t pc; uint32_t sts; uint32_t comm; @@ -79,7 +79,7 @@ struct fsms_nand_bank_regs { struct fsmc_regs { struct fsmc_nor_bank_regs nor_bank_regs[FSMC_MAX_NOR_BANKS]; uint8_t reserved_1[0x40 - 0x20]; - struct fsms_nand_bank_regs bank_regs[FSMC_MAX_NAND_BANKS]; + struct fsmc_nand_bank_regs bank_regs[FSMC_MAX_NAND_BANKS]; uint8_t reserved_2[0xfe0 - 0xc0]; uint32_t peripid0; /* 0xfe0 */ uint32_t peripid1; /* 0xfe4 */ -- cgit v1.2.3 From 6844c09d849aeb00e8ddfe9525e8567a531c22d0 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Fri, 3 Dec 2010 16:36:35 -0200 Subject: perf events: Separate the routines handling the PERF_SAMPLE_ identity fields MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Those will be made available in sample like events like MMAP, EXEC, etc in a followup patch. So precalculate the extra id header space and have a separate routine to fill them up. V2: Thomas noticed that the id header needs to be precalculated at inherit_events too: LKML-Reference: Tested-by: Thomas Gleixner Reviewed-by: Thomas Gleixner Acked-by: Ian Munsie Acked-by: Peter Zijlstra Acked-by: Thomas Gleixner Cc: Frédéric Weisbecker Cc: Ian Munsie Cc: Mike Galbraith Cc: Peter Zijlstra Cc: Paul Mackerras Cc: Stephane Eranian Cc: Thomas Gleixner LKML-Reference: <1291318772-30880-2-git-send-email-acme@infradead.org> Signed-off-by: Arnaldo Carvalho de Melo --- include/linux/perf_event.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index adf6d9931643..b9950b1620d8 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -759,6 +759,7 @@ struct perf_event { struct perf_event_attr attr; u16 header_size; + u16 id_header_size; u16 read_size; struct hw_perf_event hw; -- cgit v1.2.3 From c980d1091810df13f21aabbce545fd98f545bbf7 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Sat, 4 Dec 2010 23:02:20 -0200 Subject: perf events: Make sample_type identity fields available in all PERF_RECORD_ events MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit If perf_event_attr.sample_id_all is set it will add the PERF_SAMPLE_ identity info: TID, TIME, ID, CPU, STREAM_ID As a trailer, so that older perf tools can process new files, just ignoring the extra payload. With this its possible to do further analysis on problems in the event stream, like detecting reordering of MMAP and FORK events, etc. V2: Fixup header size in comm, mmap and task processing, as we have to take into account different sample_types for each matching event, noticed by Thomas Gleixner. Thomas also noticed a problem in v2 where if we didn't had space in the buffer we wouldn't restore the header size. Tested-by: Thomas Gleixner Reviewed-by: Thomas Gleixner Acked-by: Ian Munsie Acked-by: Peter Zijlstra Acked-by: Thomas Gleixner Cc: Frédéric Weisbecker Cc: Ian Munsie Cc: Mike Galbraith Cc: Peter Zijlstra Cc: Paul Mackerras Cc: Stephane Eranian Cc: Thomas Gleixner LKML-Reference: Signed-off-by: Arnaldo Carvalho de Melo --- include/linux/perf_event.h | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index b9950b1620d8..2814ead4adb8 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -215,8 +215,9 @@ struct perf_event_attr { */ precise_ip : 2, /* skid constraint */ mmap_data : 1, /* non-exec mmap data */ + sample_id_all : 1, /* sample_type all events */ - __reserved_1 : 46; + __reserved_1 : 45; union { __u32 wakeup_events; /* wakeup every n events */ @@ -327,6 +328,15 @@ struct perf_event_header { enum perf_event_type { /* + * If perf_event_attr.sample_id_all is set then all event types will + * have the sample_type selected fields related to where/when + * (identity) an event took place (TID, TIME, ID, CPU, STREAM_ID) + * described in PERF_RECORD_SAMPLE below, it will be stashed just after + * the perf_event_header and the fields already present for the existing + * fields, i.e. at the end of the payload. That way a newer perf.data + * file will be supported by older perf tools, with these new optional + * fields being ignored. + * * The MMAP events record the PROT_EXEC mappings so that we can * correlate userspace IPs to code. They have the following structure: * -- cgit v1.2.3 From 3fcc0afbb9c93f3599ba03273e59915670b6c2c2 Mon Sep 17 00:00:00 2001 From: Uk Kim Date: Sun, 5 Dec 2010 17:32:16 +0900 Subject: ASoC: Fix off by one error in WM8994 EQ register bank size Signed-off-by: Uk Kim Acked-by: Liam Girdwood Signed-off-by: Mark Brown Cc: stable@kernel.org --- include/linux/mfd/wm8994/pdata.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mfd/wm8994/pdata.h b/include/linux/mfd/wm8994/pdata.h index 5c51f367c061..add8a1b8bcf0 100644 --- a/include/linux/mfd/wm8994/pdata.h +++ b/include/linux/mfd/wm8994/pdata.h @@ -29,7 +29,7 @@ struct wm8994_ldo_pdata { #define WM8994_CONFIGURE_GPIO 0x8000 #define WM8994_DRC_REGS 5 -#define WM8994_EQ_REGS 19 +#define WM8994_EQ_REGS 20 /** * DRC configurations are specified with a label and a set of register -- cgit v1.2.3 From cd7ebe2298ff1c3112232878678ce5fe6be8a15b Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Fri, 3 Dec 2010 18:54:28 +0900 Subject: kprobes: Use text_poke_smp_batch for optimizing Use text_poke_smp_batch() in optimization path for reducing the number of stop_machine() issues. If the number of optimizing probes is more than MAX_OPTIMIZE_PROBES(=256), kprobes optimizes first MAX_OPTIMIZE_PROBES probes and kicks optimizer for remaining probes. Changes in v5: - Use kick_kprobe_optimizer() instead of directly calling schedule_delayed_work(). - Rescheduling optimizer outside of kprobe mutex lock. Changes in v2: - Allocate code buffer and parameters in arch_init_kprobes() instead of using static arraies. - Merge previous max optimization limit patch into this patch. So, this patch introduces upper limit of optimization at once. Signed-off-by: Masami Hiramatsu Cc: Rusty Russell Cc: Frederic Weisbecker Cc: Ananth N Mavinakayanahalli Cc: Jason Baron Cc: Mathieu Desnoyers Cc: 2nddept-manager@sdl.hitachi.co.jp Cc: Peter Zijlstra Cc: Steven Rostedt LKML-Reference: <20101203095428.2961.8994.stgit@ltc236.sdl.hitachi.co.jp> Signed-off-by: Ingo Molnar --- include/linux/kprobes.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/kprobes.h b/include/linux/kprobes.h index e7d1b2e0070d..fe157ba6aa0e 100644 --- a/include/linux/kprobes.h +++ b/include/linux/kprobes.h @@ -275,7 +275,7 @@ extern int arch_prepared_optinsn(struct arch_optimized_insn *optinsn); extern int arch_check_optimized_kprobe(struct optimized_kprobe *op); extern int arch_prepare_optimized_kprobe(struct optimized_kprobe *op); extern void arch_remove_optimized_kprobe(struct optimized_kprobe *op); -extern int arch_optimize_kprobe(struct optimized_kprobe *op); +extern void arch_optimize_kprobes(struct list_head *oplist); extern void arch_unoptimize_kprobe(struct optimized_kprobe *op); extern kprobe_opcode_t *get_optinsn_slot(void); extern void free_optinsn_slot(kprobe_opcode_t *slot, int dirty); -- cgit v1.2.3 From f984ba4eb575e4a27ed28a76d4126d2aa9233c32 Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Fri, 3 Dec 2010 18:54:34 +0900 Subject: kprobes: Use text_poke_smp_batch for unoptimizing Use text_poke_smp_batch() on unoptimization path for reducing the number of stop_machine() issues. If the number of unoptimizing probes is more than MAX_OPTIMIZE_PROBES(=256), kprobes unoptimizes first MAX_OPTIMIZE_PROBES probes and kicks optimizer for remaining probes. Signed-off-by: Masami Hiramatsu Cc: Rusty Russell Cc: Frederic Weisbecker Cc: Ananth N Mavinakayanahalli Cc: Jason Baron Cc: Mathieu Desnoyers Cc: 2nddept-manager@sdl.hitachi.co.jp Cc: Peter Zijlstra Cc: Steven Rostedt LKML-Reference: <20101203095434.2961.22657.stgit@ltc236.sdl.hitachi.co.jp> Signed-off-by: Ingo Molnar --- include/linux/kprobes.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/kprobes.h b/include/linux/kprobes.h index fe157ba6aa0e..b78edb58ee66 100644 --- a/include/linux/kprobes.h +++ b/include/linux/kprobes.h @@ -276,6 +276,8 @@ extern int arch_check_optimized_kprobe(struct optimized_kprobe *op); extern int arch_prepare_optimized_kprobe(struct optimized_kprobe *op); extern void arch_remove_optimized_kprobe(struct optimized_kprobe *op); extern void arch_optimize_kprobes(struct list_head *oplist); +extern void arch_unoptimize_kprobes(struct list_head *oplist, + struct list_head *done_list); extern void arch_unoptimize_kprobe(struct optimized_kprobe *op); extern kprobe_opcode_t *get_optinsn_slot(void); extern void free_optinsn_slot(kprobe_opcode_t *slot, int dirty); -- cgit v1.2.3 From 3110f5f5545a645c50ef66b1f705d08dfd1df404 Mon Sep 17 00:00:00 2001 From: Matt Carlson Date: Mon, 6 Dec 2010 08:28:50 +0000 Subject: tg3: Move EEE definitions into mdio.h In commit 52b02d04c801fff51ca49ad033210846d1713253 entitled "tg3: Add EEE support", Ben Hutchings had commented that the EEE advertisement register will be in a standard location. This patch moves that definition into mdio.h and changes the code to use it. Signed-off-by: Matt Carlson Reviewed-by: Benjamin Li Signed-off-by: David S. Miller --- include/linux/mdio.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mdio.h b/include/linux/mdio.h index c779b49a1fda..b1494aced217 100644 --- a/include/linux/mdio.h +++ b/include/linux/mdio.h @@ -55,6 +55,7 @@ #define MDIO_PCS_10GBRT_STAT2 33 /* 10GBASE-R/-T PCS status 2 */ #define MDIO_AN_10GBT_CTRL 32 /* 10GBASE-T auto-negotiation control */ #define MDIO_AN_10GBT_STAT 33 /* 10GBASE-T auto-negotiation status */ +#define MDIO_AN_EEE_ADV 60 /* EEE advertisement */ /* LASI (Link Alarm Status Interrupt) registers, defined by XENPAK MSA. */ #define MDIO_PMA_LASI_RXCTRL 0x9000 /* RX_ALARM control */ @@ -235,6 +236,10 @@ #define MDIO_AN_10GBT_STAT_MS 0x4000 /* Master/slave config */ #define MDIO_AN_10GBT_STAT_MSFLT 0x8000 /* Master/slave config fault */ +/* AN EEE Advertisement register. */ +#define MDIO_AN_EEE_ADV_100TX 0x0002 /* Advertise 100TX EEE cap */ +#define MDIO_AN_EEE_ADV_1000T 0x0004 /* Advertise 1000T EEE cap */ + /* LASI RX_ALARM control/status registers. */ #define MDIO_PMA_LASI_RX_PHYXSLFLT 0x0001 /* PHY XS RX local fault */ #define MDIO_PMA_LASI_RX_PCSLFLT 0x0008 /* PCS RX local fault */ -- cgit v1.2.3 From af5568843594fb71055debe36e521fa8072fcecc Mon Sep 17 00:00:00 2001 From: Bruno Randolf Date: Thu, 2 Dec 2010 19:50:37 +0900 Subject: lib: Improve EWMA efficiency by using bitshifts Using bitshifts instead of division and multiplication should improve performance. That requires weight and factor to be powers of two, but i think this is something we can live with. Thanks to Peter Zijlstra for the improved formula! Signed-off-by: Bruno Randolf -- v2: use log2.h functions Signed-off-by: John W. Linville --- include/linux/average.h | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/average.h b/include/linux/average.h index 7706e40f95fa..c6028fd742c1 100644 --- a/include/linux/average.h +++ b/include/linux/average.h @@ -1,8 +1,6 @@ #ifndef _LINUX_AVERAGE_H #define _LINUX_AVERAGE_H -#include - /* Exponentially weighted moving average (EWMA) */ /* For more documentation see lib/average.c */ @@ -26,7 +24,7 @@ extern struct ewma *ewma_add(struct ewma *avg, unsigned long val); */ static inline unsigned long ewma_read(const struct ewma *avg) { - return DIV_ROUND_CLOSEST(avg->internal, avg->factor); + return avg->internal >> avg->factor; } #endif /* _LINUX_AVERAGE_H */ -- cgit v1.2.3 From 073285fd392f6dc901da7c698d46e1e2a7e26436 Mon Sep 17 00:00:00 2001 From: Alexey Orishko Date: Mon, 29 Nov 2010 23:23:27 +0000 Subject: usbnet: changes for upcoming cdc_ncm driver Changes: include/linux/usb/usbnet.h: - a new flag to indicate driver's capability to accumulate IP packets in Tx direction and extract several packets from single skb in Rx direction. drivers/net/usb/usbnet.c: - the procedure of counting packets in usbnet was updated due to the accumulating of IP packets in the driver - no short packets are sent if indicated by the flag in driver_info structure Signed-off-by: Alexey Orishko Signed-off-by: David S. Miller --- include/linux/usb/usbnet.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb/usbnet.h b/include/linux/usb/usbnet.h index 7ae27a473818..44842c8d38c0 100644 --- a/include/linux/usb/usbnet.h +++ b/include/linux/usb/usbnet.h @@ -97,6 +97,12 @@ struct driver_info { #define FLAG_LINK_INTR 0x0800 /* updates link (carrier) status */ +/* + * Indicates to usbnet, that USB driver accumulates multiple IP packets. + * Affects statistic (counters) and short packet handling. + */ +#define FLAG_MULTI_PACKET 0x1000 + /* init device ... can sleep, or cause probe() failure */ int (*bind)(struct usbnet *, struct usb_interface *); -- cgit v1.2.3 From da2033c282264bfba4e339b7cb3df62adb5c5fc8 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Tue, 30 Nov 2010 21:45:56 +0000 Subject: filter: add SKF_AD_RXHASH and SKF_AD_CPU Add SKF_AD_RXHASH and SKF_AD_CPU to filter ancillary mechanism, to be able to build advanced filters. This can help spreading packets on several sockets with a fast selection, after RPS dispatch to N cpus for example, or to catch a percentage of flows in one queue. tcpdump -s 500 "cpu = 1" : [0] ld CPU [1] jeq #1 jt 2 jf 3 [2] ret #500 [3] ret #0 # take 12.5 % of flows (average) tcpdump -s 1000 "rxhash & 7 = 2" : [0] ld RXHASH [1] and #7 [2] jeq #2 jt 3 jf 4 [3] ret #1000 [4] ret #0 Signed-off-by: Eric Dumazet Cc: Rui Acked-by: Changli Gao Signed-off-by: David S. Miller --- include/linux/filter.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/filter.h b/include/linux/filter.h index 447a775878fb..5334adaf4072 100644 --- a/include/linux/filter.h +++ b/include/linux/filter.h @@ -124,7 +124,9 @@ struct sock_fprog { /* Required for SO_ATTACH_FILTER. */ #define SKF_AD_MARK 20 #define SKF_AD_QUEUE 24 #define SKF_AD_HATYPE 28 -#define SKF_AD_MAX 32 +#define SKF_AD_RXHASH 32 +#define SKF_AD_CPU 36 +#define SKF_AD_MAX 40 #define SKF_NET_OFF (-0x100000) #define SKF_LL_OFF (-0x200000) -- cgit v1.2.3 From 06a9701f4b3e3381dea96fee1cc8a3bb41b0a1f1 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Wed, 1 Dec 2010 01:37:42 +0000 Subject: __in_dev_get_rtnl() can use rtnl_dereference() If caller holds RTNL, we dont need a memory barrier (smp_read_barrier_depends) included in rcu_dereference(). Just use rtnl_dereference() to properly document the assertions. Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- include/linux/inetdevice.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/inetdevice.h b/include/linux/inetdevice.h index 2b86eaf11773..ae8fdc54e0c0 100644 --- a/include/linux/inetdevice.h +++ b/include/linux/inetdevice.h @@ -222,7 +222,7 @@ static inline struct in_device *in_dev_get(const struct net_device *dev) static inline struct in_device *__in_dev_get_rtnl(const struct net_device *dev) { - return rcu_dereference_check(dev->ip_ptr, lockdep_rtnl_is_held()); + return rtnl_dereference(dev->ip_ptr); } extern void in_dev_finish_destroy(struct in_device *idev); -- cgit v1.2.3 From 45904f21655cf4f0ae7d0fab5906fe51bf56ecf4 Mon Sep 17 00:00:00 2001 From: Javier Cardona Date: Fri, 3 Dec 2010 09:20:40 +0100 Subject: nl80211/mac80211: define and allow configuring mesh element TTL The TTL in path selection information elements is different from the mesh ttl used in mesh data frames. Version 7.03 of the 11s draft calls this ttl 'Element TTL'. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- include/linux/nl80211.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index 5cfa579df476..9e541452d805 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -1547,6 +1547,9 @@ enum nl80211_mntr_flags { * @NL80211_MESHCONF_TTL: specifies the value of TTL field set at a source mesh * point. * + * @NL80211_MESHCONF_ELEMENT_TTL: specifies the value of TTL field set at a + * source mesh point for path selection elements. + * * @NL80211_MESHCONF_AUTO_OPEN_PLINKS: whether we should automatically * open peer links when we detect compatible mesh peers. * @@ -1593,6 +1596,7 @@ enum nl80211_meshconf_params { NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, NL80211_MESHCONF_HWMP_ROOTMODE, + NL80211_MESHCONF_ELEMENT_TTL, /* keep last */ __NL80211_MESHCONF_ATTR_AFTER_LAST, -- cgit v1.2.3 From 29cbe68c516a48a9a88b3226878570c6cbd83c02 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Fri, 3 Dec 2010 09:20:44 +0100 Subject: cfg80211/mac80211: add mesh join/leave commands Instead of tying mesh activity to interface up, add join and leave commands for mesh. Since we must be backward compatible, let cfg80211 handle joining a mesh if a mesh ID was pre-configured when the device goes up. Note that this therefore must modify mac80211 as well since mac80211 needs to lose the logic to start the mesh on interface up. We now allow querying mesh parameters before the mesh is connected, which simply returns defaults. Setting them (internally renamed to "update") is only allowed while connected. Specify them with the new mesh join command instead where needed. In mac80211, beaconing must now also follow the mesh enabled/not enabled state, which is done by testing the mesh ID. Signed-off-by: Javier Cardona Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- include/linux/nl80211.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index 9e541452d805..410a06ea551b 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -394,6 +394,11 @@ * * @NL80211_CMD_SET_WDS_PEER: Set the MAC address of the peer on a WDS interface. * + * @NL80211_CMD_JOIN_MESH: Join a mesh. The mesh ID must be given, and initial + * mesh config parameters may be given. + * @NL80211_CMD_LEAVE_MESH: Leave the mesh network -- no special arguments, the + * network is determined by the network interface. + * * @NL80211_CMD_MAX: highest used command number * @__NL80211_CMD_AFTER_LAST: internal use */ @@ -500,6 +505,9 @@ enum nl80211_commands { NL80211_CMD_FRAME_WAIT_CANCEL, + NL80211_CMD_JOIN_MESH, + NL80211_CMD_LEAVE_MESH, + /* add new commands above here */ /* used to define NL80211_CMD_MAX below */ -- cgit v1.2.3 From 0e7d0c860a0dee49dacb7bbb248d1eba637075ad Mon Sep 17 00:00:00 2001 From: Gabor Juhos Date: Mon, 6 Dec 2010 17:14:47 -0800 Subject: Input: add input driver for polled GPIO buttons The existing gpio-keys driver can be usable only for GPIO lines with interrupt support. Several devices have buttons connected to a GPIO line which is not capable to generate interrupts. This patch adds a new input driver using the generic GPIO layer and the input-polldev to support such buttons. [Ben Gardiner Signed-off-by: Ben Gardiner Tested-by: Ben Gardiner Signed-off-by: Dmitry Torokhov --- include/linux/gpio_keys.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/gpio_keys.h b/include/linux/gpio_keys.h index ce73a30113b4..dd1a56fbe924 100644 --- a/include/linux/gpio_keys.h +++ b/include/linux/gpio_keys.h @@ -16,6 +16,8 @@ struct gpio_keys_button { struct gpio_keys_platform_data { struct gpio_keys_button *buttons; int nbuttons; + unsigned int poll_interval; /* polling interval in msecs - + for polling driver only */ unsigned int rep:1; /* enable input subsystem auto repeat */ int (*enable)(struct device *dev); void (*disable)(struct device *dev); -- cgit v1.2.3 From 871a2c16c21b988688b4ab1a78eadd969765c0a3 Mon Sep 17 00:00:00 2001 From: Tomasz Grobelny Date: Sat, 4 Dec 2010 13:38:01 +0100 Subject: dccp: Policy-based packet dequeueing infrastructure This patch adds a generic infrastructure for policy-based dequeueing of TX packets and provides two policies: * a simple FIFO policy (which is the default) and * a priority based policy (set via socket options). Both policies honour the tx_qlen sysctl for the maximum size of the write queue (can be overridden via socket options). The priority policy uses skb->priority internally to assign an u32 priority identifier, using the same ranking as SO_PRIORITY. The skb->priority field is set to 0 when the packet leaves DCCP. The priority is supplied as ancillary data using cmsg(3), the patch also provides the requisite parsing routines. Signed-off-by: Tomasz Grobelny Signed-off-by: Gerrit Renker --- include/linux/dccp.h | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) (limited to 'include/linux') diff --git a/include/linux/dccp.h b/include/linux/dccp.h index eed52bcd35d0..010e2d87ed75 100644 --- a/include/linux/dccp.h +++ b/include/linux/dccp.h @@ -197,6 +197,21 @@ enum dccp_feature_numbers { DCCPF_MAX_CCID_SPECIFIC = 255, }; +/* DCCP socket control message types for cmsg */ +enum dccp_cmsg_type { + DCCP_SCM_PRIORITY = 1, + DCCP_SCM_QPOLICY_MAX = 0xFFFF, + /* ^-- Up to here reserved exclusively for qpolicy parameters */ + DCCP_SCM_MAX +}; + +/* DCCP priorities for outgoing/queued packets */ +enum dccp_packet_dequeueing_policy { + DCCPQ_POLICY_SIMPLE, + DCCPQ_POLICY_PRIO, + DCCPQ_POLICY_MAX +}; + /* DCCP socket options */ #define DCCP_SOCKOPT_PACKET_SIZE 1 /* XXX deprecated, without effect */ #define DCCP_SOCKOPT_SERVICE 2 @@ -210,6 +225,8 @@ enum dccp_feature_numbers { #define DCCP_SOCKOPT_CCID 13 #define DCCP_SOCKOPT_TX_CCID 14 #define DCCP_SOCKOPT_RX_CCID 15 +#define DCCP_SOCKOPT_QPOLICY_ID 16 +#define DCCP_SOCKOPT_QPOLICY_TXQLEN 17 #define DCCP_SOCKOPT_CCID_RX_INFO 128 #define DCCP_SOCKOPT_CCID_TX_INFO 192 @@ -458,6 +475,8 @@ struct dccp_ackvec; * @dccps_hc_rx_ccid - CCID used for the receiver (or receiving half-connection) * @dccps_hc_tx_ccid - CCID used for the sender (or sending half-connection) * @dccps_options_received - parsed set of retrieved options + * @dccps_qpolicy - TX dequeueing policy, one of %dccp_packet_dequeueing_policy + * @dccps_tx_qlen - maximum length of the TX queue * @dccps_role - role of this sock, one of %dccp_role * @dccps_hc_rx_insert_options - receiver wants to add options when acking * @dccps_hc_tx_insert_options - sender wants to add options when sending @@ -500,6 +519,8 @@ struct dccp_sock { struct ccid *dccps_hc_rx_ccid; struct ccid *dccps_hc_tx_ccid; struct dccp_options_received dccps_options_received; + __u8 dccps_qpolicy; + __u32 dccps_tx_qlen; enum dccp_role dccps_role:2; __u8 dccps_hc_rx_insert_options:1; __u8 dccps_hc_tx_insert_options:1; -- cgit v1.2.3 From 02c048b919455aaa38628563cdcc2e691c8a9f53 Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Tue, 7 Dec 2010 20:16:56 +0100 Subject: fuse: allow batching of FORGET requests Terje Malmedal reports that a fuse filesystem with 32 million inodes on a machine with lots of memory can take up to 30 minutes to process FORGET requests when all those inodes are evicted from the icache. To solve this, create a BATCH_FORGET request that allows up to about 8000 FORGET requests to be sent in a single message. This request is only sent if userspace supports interface version 7.16 or later, otherwise fall back to sending individual FORGET messages. Reported-by: Terje Malmedal Signed-off-by: Miklos Szeredi --- include/linux/fuse.h | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/fuse.h b/include/linux/fuse.h index c3c578e09833..cf11881f4938 100644 --- a/include/linux/fuse.h +++ b/include/linux/fuse.h @@ -41,6 +41,9 @@ * 7.15 * - add store notify * - add retrieve notify + * + * 7.16 + * - add BATCH_FORGET request */ #ifndef _LINUX_FUSE_H @@ -72,7 +75,7 @@ #define FUSE_KERNEL_VERSION 7 /** Minor version number of this interface */ -#define FUSE_KERNEL_MINOR_VERSION 15 +#define FUSE_KERNEL_MINOR_VERSION 16 /** The node ID of the root inode */ #define FUSE_ROOT_ID 1 @@ -256,6 +259,7 @@ enum fuse_opcode { FUSE_IOCTL = 39, FUSE_POLL = 40, FUSE_NOTIFY_REPLY = 41, + FUSE_BATCH_FORGET = 42, /* CUSE specific operations */ CUSE_INIT = 4096, @@ -290,6 +294,16 @@ struct fuse_forget_in { __u64 nlookup; }; +struct fuse_forget_one { + __u64 nodeid; + __u64 nlookup; +}; + +struct fuse_batch_forget_in { + __u32 count; + __u32 dummy; +}; + struct fuse_getattr_in { __u32 getattr_flags; __u32 dummy; -- cgit v1.2.3 From 1baa26b2be92fe9917e2f7ef46d423b5dfa4da71 Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Tue, 7 Dec 2010 20:16:56 +0100 Subject: fuse: fix ioctl ABI In kernel ABI version 7.16 and later FUSE_IOCTL_RETRY reply from a unrestricted IOCTL request shall return with an array of 'struct fuse_ioctl_iovec' instead of 'struct iovec'. This fixes the ABI ambiguity of 32bit vs. 64bit. Reported-by: "ccmail111" Signed-off-by: Miklos Szeredi CC: Tejun Heo --- include/linux/fuse.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/linux') diff --git a/include/linux/fuse.h b/include/linux/fuse.h index cf11881f4938..d464de53db43 100644 --- a/include/linux/fuse.h +++ b/include/linux/fuse.h @@ -44,6 +44,9 @@ * * 7.16 * - add BATCH_FORGET request + * - FUSE_IOCTL_UNRESTRICTED shall now return with array of 'struct + * fuse_ioctl_iovec' instead of ambiguous 'struct iovec' + * - add FUSE_IOCTL_32BIT flag */ #ifndef _LINUX_FUSE_H @@ -203,12 +206,14 @@ struct fuse_file_lock { * FUSE_IOCTL_COMPAT: 32bit compat ioctl on 64bit machine * FUSE_IOCTL_UNRESTRICTED: not restricted to well-formed ioctls, retry allowed * FUSE_IOCTL_RETRY: retry with new iovecs + * FUSE_IOCTL_32BIT: 32bit ioctl * * FUSE_IOCTL_MAX_IOV: maximum of in_iovecs + out_iovecs */ #define FUSE_IOCTL_COMPAT (1 << 0) #define FUSE_IOCTL_UNRESTRICTED (1 << 1) #define FUSE_IOCTL_RETRY (1 << 2) +#define FUSE_IOCTL_32BIT (1 << 3) #define FUSE_IOCTL_MAX_IOV 256 @@ -524,6 +529,11 @@ struct fuse_ioctl_in { __u32 out_size; }; +struct fuse_ioctl_iovec { + __u64 base; + __u64 len; +}; + struct fuse_ioctl_out { __s32 result; __u32 flags; -- cgit v1.2.3 From 541a45a142df281c974d74eac2066138fc107b23 Mon Sep 17 00:00:00 2001 From: Bruno Randolf Date: Thu, 2 Dec 2010 19:12:43 +0900 Subject: nl80211/mac80211: Report signal average Extend nl80211 to report an exponential weighted moving average (EWMA) of the signal value. Since the signal value usually fluctuates between different packets, an average can be more useful than the value of the last packet. This uses the recently added generic EWMA library function. -- v2: fix ABI breakage and change factor to be a power of 2. Signed-off-by: Bruno Randolf Signed-off-by: John W. Linville --- include/linux/nl80211.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index 410a06ea551b..8e28053ea423 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -1191,6 +1191,7 @@ enum nl80211_rate_info { * station) * @NL80211_STA_INFO_TX_RETRIES: total retries (u32, to this station) * @NL80211_STA_INFO_TX_FAILED: total failed packets (u32, to this station) + * @NL80211_STA_INFO_SIGNAL_AVG: signal strength average (u8, dBm) */ enum nl80211_sta_info { __NL80211_STA_INFO_INVALID, @@ -1206,6 +1207,7 @@ enum nl80211_sta_info { NL80211_STA_INFO_TX_PACKETS, NL80211_STA_INFO_TX_RETRIES, NL80211_STA_INFO_TX_FAILED, + NL80211_STA_INFO_SIGNAL_AVG, /* keep last */ __NL80211_STA_INFO_AFTER_LAST, -- cgit v1.2.3 From 88d60c32765716289abeb362c44adf6c35c6824c Mon Sep 17 00:00:00 2001 From: Eric Paris Date: Mon, 8 Nov 2010 18:19:22 -0500 Subject: fanotify: remove packed from access response message Since fanotify has decided to be careful about alignment and packing rather than rely on __attribute__((packed)) for multiarch support. Since this attribute isn't doing anything on fanotify_response we just drop it. This does not break API/ABI. Suggested-by: Tvrtko Ursulin Signed-off-by: Eric Paris --- include/linux/fanotify.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/fanotify.h b/include/linux/fanotify.h index 0f0121467fc4..bdbf9bb29b54 100644 --- a/include/linux/fanotify.h +++ b/include/linux/fanotify.h @@ -96,7 +96,7 @@ struct fanotify_event_metadata { struct fanotify_response { __s32 fd; __u32 response; -} __attribute__ ((packed)); +}; /* Legit userspace responses to a _PERM event */ #define FAN_ALLOW 0x01 -- cgit v1.2.3 From b1085ba80cd2784400a7beec3fda5099198ed01c Mon Sep 17 00:00:00 2001 From: Lino Sanfilippo Date: Fri, 5 Nov 2010 17:05:27 +0100 Subject: fanotify: if set by user unset FMODE_NONOTIFY before fsnotify_perm() is called Unsetting FMODE_NONOTIFY in fsnotify_open() is too late, since fsnotify_perm() is called before. If FMODE_NONOTIFY is set fsnotify_perm() will skip permission checks, so a user can still disable permission checks by setting this flag in an open() call. This patch corrects this by unsetting the flag before fsnotify_perm is called. Signed-off-by: Lino Sanfilippo Signed-off-by: Eric Paris --- include/linux/fsnotify.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/fsnotify.h b/include/linux/fsnotify.h index 5c185fa27089..b10bcdeaef76 100644 --- a/include/linux/fsnotify.h +++ b/include/linux/fsnotify.h @@ -235,9 +235,6 @@ static inline void fsnotify_open(struct file *file) if (S_ISDIR(inode->i_mode)) mask |= FS_ISDIR; - /* FMODE_NONOTIFY must never be set from user */ - file->f_mode &= ~FMODE_NONOTIFY; - fsnotify_parent(path, NULL, mask); fsnotify(inode, mask, path, FSNOTIFY_EVENT_PATH, NULL, 0); } -- cgit v1.2.3 From 09e5f14e57c70f9d357862bb56e57026c51092a1 Mon Sep 17 00:00:00 2001 From: Lino Sanfilippo Date: Fri, 19 Nov 2010 10:58:07 +0100 Subject: fanotify: on group destroy allow all waiters to bypass permission check When fanotify_release() is called, there may still be processes waiting for access permission. Currently only processes for which an event has already been queued into the groups access list will be woken up. Processes for which no event has been queued will continue to sleep and thus cause a deadlock when fsnotify_put_group() is called. Furthermore there is a race allowing further processes to be waiting on the access wait queue after wake_up (if they arrive before clear_marks_by_group() is called). This patch corrects this by setting a flag to inform processes that the group is about to be destroyed and thus not to wait for access permission. [additional changelog from eparis] Lets think about the 4 relevant code paths from the PoV of the 'operator' 'listener' 'responder' and 'closer'. Where operator is the process doing an action (like open/read) which could require permission. Listener is the task (or in this case thread) slated with reading from the fanotify file descriptor. The 'responder' is the thread responsible for responding to access requests. 'Closer' is the thread attempting to close the fanotify file descriptor. The 'operator' is going to end up in: fanotify_handle_event() get_response_from_access() (THIS BLOCKS WAITING ON USERSPACE) The 'listener' interesting code path fanotify_read() copy_event_to_user() prepare_for_access_response() (THIS CREATES AN fanotify_response_event) The 'responder' code path: fanotify_write() process_access_response() (REMOVE A fanotify_response_event, SET RESPONSE, WAKE UP 'operator') The 'closer': fanotify_release() (SUPPOSED TO CLEAN UP THE REST OF THIS MESS) What we have today is that in the closer we remove all of the fanotify_response_events and set a bit so no more response events are ever created in prepare_for_access_response(). The bug is that we never wake all of the operators up and tell them to move along. You fix that in fanotify_get_response_from_access(). You also fix other operators which haven't gotten there yet. So I agree that's a good fix. [/additional changelog from eparis] [remove additional changes to minimize patch size] [move initialization so it was inside CONFIG_FANOTIFY_PERMISSION] Signed-off-by: Lino Sanfilippo Signed-off-by: Eric Paris --- include/linux/fsnotify_backend.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/fsnotify_backend.h b/include/linux/fsnotify_backend.h index 0a68f924f06f..7380763595d3 100644 --- a/include/linux/fsnotify_backend.h +++ b/include/linux/fsnotify_backend.h @@ -166,7 +166,7 @@ struct fsnotify_group { struct mutex access_mutex; struct list_head access_list; wait_queue_head_t access_waitq; - bool bypass_perm; /* protected by access_mutex */ + atomic_t bypass_perm; #endif /* CONFIG_FANOTIFY_ACCESS_PERMISSIONS */ int f_flags; unsigned int max_marks; -- cgit v1.2.3 From e9a3854fd4ff3907e6c200a3980e19365ee695e9 Mon Sep 17 00:00:00 2001 From: Lino Sanfilippo Date: Wed, 24 Nov 2010 18:22:09 +0100 Subject: fanotify: Introduce FAN_NOFD FAN_NOFD is used in fanotify events that do not provide an open file descriptor (like the overflow_event). Signed-off-by: Lino Sanfilippo Signed-off-by: Eric Paris --- include/linux/fanotify.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/fanotify.h b/include/linux/fanotify.h index bdbf9bb29b54..c73224315aee 100644 --- a/include/linux/fanotify.h +++ b/include/linux/fanotify.h @@ -101,6 +101,8 @@ struct fanotify_response { /* Legit userspace responses to a _PERM event */ #define FAN_ALLOW 0x01 #define FAN_DENY 0x02 +/* No fd set in event */ +#define FAN_NOFD -1 /* Helper functions to deal with fanotify_event_metadata buffers */ #define FAN_EVENT_METADATA_LEN (sizeof(struct fanotify_event_metadata)) -- cgit v1.2.3 From 5c6d1125f8dbd1bfef39e38fbc2837003be78a59 Mon Sep 17 00:00:00 2001 From: Jarkko Sakkinen Date: Tue, 7 Dec 2010 13:34:01 +0200 Subject: Smack: Transmute labels on specified directories In a situation where Smack access rules allow processes with multiple labels to write to a directory it is easy to get into a situation where the directory gets cluttered with files that the owner can't deal with because while they could be written to the directory a process at the label of the directory can't write them. This is generally the desired behavior, but when it isn't it is a real issue. This patch introduces a new attribute SMACK64TRANSMUTE that instructs Smack to create the file with the label of the directory under certain circumstances. A new access mode, "t" for transmute, is made available to Smack access rules, which are expanded from "rwxa" to "rwxat". If a file is created in a directory marked as transmutable and if access was granted to perform the operation by a rule that included the transmute mode, then the file gets the Smack label of the directory instead of the Smack label of the creating process. Note that this is equivalent to creating an empty file at the label of the directory and then having the other process write to it. The transmute scheme requires that both the access rule allows transmutation and that the directory be explicitly marked. Signed-off-by: Jarkko Sakkinen Signed-off-by: Casey Schaufler --- include/linux/xattr.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/xattr.h b/include/linux/xattr.h index 351c7901d74a..e6131ef98d8f 100644 --- a/include/linux/xattr.h +++ b/include/linux/xattr.h @@ -41,10 +41,12 @@ #define XATTR_SMACK_IPIN "SMACK64IPIN" #define XATTR_SMACK_IPOUT "SMACK64IPOUT" #define XATTR_SMACK_EXEC "SMACK64EXEC" +#define XATTR_SMACK_TRANSMUTE "SMACK64TRANSMUTE" #define XATTR_NAME_SMACK XATTR_SECURITY_PREFIX XATTR_SMACK_SUFFIX #define XATTR_NAME_SMACKIPIN XATTR_SECURITY_PREFIX XATTR_SMACK_IPIN #define XATTR_NAME_SMACKIPOUT XATTR_SECURITY_PREFIX XATTR_SMACK_IPOUT #define XATTR_NAME_SMACKEXEC XATTR_SECURITY_PREFIX XATTR_SMACK_EXEC +#define XATTR_NAME_SMACKTRANSMUTE XATTR_SECURITY_PREFIX XATTR_SMACK_TRANSMUTE #define XATTR_CAPS_SUFFIX "capability" #define XATTR_NAME_CAPS XATTR_SECURITY_PREFIX XATTR_CAPS_SUFFIX -- cgit v1.2.3 From 2df485a774ba59c3f43bfe84107672c1d9b731a0 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 7 Dec 2010 22:39:17 -0500 Subject: nfs: remove extraneous and problematic calls to nfs_clear_request When a nfs_page is freed, nfs_free_request is called which also calls nfs_clear_request to clean out the lock and open contexts and free the pagecache page. However, a couple of places in the nfs code call nfs_clear_request themselves. What happens here if the refcount on the request is still high? We'll be releasing contexts and freeing pointers while the request is possibly still in use. Remove those bare calls to nfs_clear_context. That should only be done when the request is being freed. Note that when doing this, we need to watch out for tests of req->wb_page. Previously, nfs_set_page_tag_locked() and nfs_clear_page_tag_locked() would check the value of req->wb_page to figure out if the page is mapped into the nfsi->nfs_page_tree. We now indicate the page is mapped using the new bit PG_MAPPED in req->wb_flags . Reported-by: Jeff Layton Signed-off-by: Trond Myklebust --- include/linux/nfs_page.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/nfs_page.h b/include/linux/nfs_page.h index f8b60e7f4c44..d55cee73f634 100644 --- a/include/linux/nfs_page.h +++ b/include/linux/nfs_page.h @@ -29,6 +29,7 @@ */ enum { PG_BUSY = 0, + PG_MAPPED, PG_CLEAN, PG_NEED_COMMIT, PG_NEED_RESCHED, -- cgit v1.2.3 From 9f843706bb87837b823228467f4f83973fd110e9 Mon Sep 17 00:00:00 2001 From: Simon Horman Date: Mon, 6 Dec 2010 00:12:44 +0000 Subject: mmc, sh: Move MMCIF_PROGRESS_* into sh_mmcif.h Allow MMCIF_PROGRESS_* to be shared. Cc: Magnus Damm Signed-off-by: Simon Horman Signed-off-by: Paul Mundt --- include/linux/mmc/sh_mmcif.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mmc/sh_mmcif.h b/include/linux/mmc/sh_mmcif.h index ffabf8c0a531..6a98e97c49f8 100644 --- a/include/linux/mmc/sh_mmcif.h +++ b/include/linux/mmc/sh_mmcif.h @@ -97,6 +97,9 @@ static inline void sh_mmcif_writel(void __iomem *addr, int reg, u32 val) #define SH_MMCIF_BBS 512 /* boot block size */ +enum { MMCIF_PROGRESS_ENTER, MMCIF_PROGRESS_INIT, + MMCIF_PROGRESS_LOAD, MMCIF_PROGRESS_DONE }; + static inline void sh_mmcif_boot_cmd_send(void __iomem *base, unsigned long cmd, unsigned long arg) { -- cgit v1.2.3 From 54b384634f7083bcacf9a9ed2e6f4c3d0a246e49 Mon Sep 17 00:00:00 2001 From: Simon Horman Date: Mon, 6 Dec 2010 00:12:45 +0000 Subject: mmc, sh: Remove sh_mmcif_boot_slurp() As the only caller of sh_mmcif_boot_do_read() is sh_mmcif_boot_slurp() the configuration portion of sh_mmcif_boot_slurp() can be merged into sh_mmcif_boot_do_read(). Once this is done sh_mmcif_boot_slurp() is only a call to sh_mmcif_boot_do_read() with platform specific information - the offset that images are stored on MMC. So make the sh_mmcif_boot_do_read() call directly from platform code and remove sh_mmcif_boot_slurp() altogether. Cc: Magnus Damm Signed-off-by: Simon Horman Signed-off-by: Paul Mundt --- include/linux/mmc/sh_mmcif.h | 34 +++++++++++----------------------- 1 file changed, 11 insertions(+), 23 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mmc/sh_mmcif.h b/include/linux/mmc/sh_mmcif.h index 6a98e97c49f8..cfcc6e320e2f 100644 --- a/include/linux/mmc/sh_mmcif.h +++ b/include/linux/mmc/sh_mmcif.h @@ -162,6 +162,17 @@ static inline int sh_mmcif_boot_do_read(void __iomem *base, unsigned long k; int ret = 0; + /* In data transfer mode: Set clock to Bus clock/4 (about 20Mhz) */ + sh_mmcif_writel(base, MMCIF_CE_CLK_CTRL, + CLK_ENABLE | CLKDIV_4 | SRSPTO_256 | + SRBSYTO_29 | SRWDTO_29 | SCCSTO_29); + + /* CMD9 - Get CSD */ + sh_mmcif_boot_cmd(base, 0x09806000, 0x00010000); + + /* CMD7 - Select the card */ + sh_mmcif_boot_cmd(base, 0x07400000, 0x00010000); + /* CMD16 - Set the block size */ sh_mmcif_boot_cmd(base, 0x10400000, SH_MMCIF_BBS); @@ -205,27 +216,4 @@ static inline void sh_mmcif_boot_init(void __iomem *base) sh_mmcif_boot_cmd(base, 0x03400040, 0x00010000); } -static inline void sh_mmcif_boot_slurp(void __iomem *base, - unsigned char *buf, - unsigned long no_bytes) -{ - unsigned long tmp; - - /* In data transfer mode: Set clock to Bus clock/4 (about 20Mhz) */ - sh_mmcif_writel(base, MMCIF_CE_CLK_CTRL, - CLK_ENABLE | CLKDIV_4 | SRSPTO_256 | - SRBSYTO_29 | SRWDTO_29 | SCCSTO_29); - - /* CMD9 - Get CSD */ - sh_mmcif_boot_cmd(base, 0x09806000, 0x00010000); - - /* CMD7 - Select the card */ - sh_mmcif_boot_cmd(base, 0x07400000, 0x00010000); - - tmp = no_bytes / SH_MMCIF_BBS; - tmp += (no_bytes % SH_MMCIF_BBS) ? 1 : 0; - - sh_mmcif_boot_do_read(base, 512, tmp, buf); -} - #endif /* __SH_MMCIF_H__ */ -- cgit v1.2.3 From 5bea7660bba973dc5e8e9d92b11fb1dd5b524ebf Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Tue, 7 Dec 2010 23:02:48 -0800 Subject: HID: add hid_hw_open/close/power() handlers Instead of exposing the guts of hid->ll_driver relationship to HID sub-drivers provide these helpers to encapsulate the details. Signed-off-by: Dmitry Torokhov Signed-off-by: Jiri Kosina --- include/linux/hid.h | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) (limited to 'include/linux') diff --git a/include/linux/hid.h b/include/linux/hid.h index bb0f56f5c01e..e2af195d8b46 100644 --- a/include/linux/hid.h +++ b/include/linux/hid.h @@ -820,6 +820,49 @@ static inline void hid_hw_stop(struct hid_device *hdev) hdev->ll_driver->stop(hdev); } +/** + * hid_hw_open - signal underlaying HW to start delivering events + * + * @hdev: hid device + * + * Tell underlying HW to start delivering events from the device. + * This function should be called sometime after successful call + * to hid_hiw_start(). + */ +static inline int __must_check hid_hw_open(struct hid_device *hdev) +{ + return hdev->ll_driver->open(hdev); +} + +/** + * hid_hw_close - signal underlaying HW to stop delivering events + * + * @hdev: hid device + * + * This function indicates that we are not interested in the events + * from this device anymore. Delivery of events may or may not stop, + * depending on the number of users still outstanding. + */ +static inline void hid_hw_close(struct hid_device *hdev) +{ + hdev->ll_driver->close(hdev); +} + +/** + * hid_hw_power - requests underlying HW to go into given power mode + * + * @hdev: hid device + * @level: requested power level (one of %PM_HINT_* defines) + * + * This function requests underlying hardware to enter requested power + * mode. + */ + +static inline int hid_hw_power(struct hid_device *hdev, int level) +{ + return hdev->ll_driver->power ? hdev->ll_driver->power(hdev, level) : 0; +} + void hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size, int interrupt); -- cgit v1.2.3 From 941666c2e3e0f9f6a1cb5808d02352d445bd702c Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Sun, 5 Dec 2010 01:23:53 +0000 Subject: net: RCU conversion of dev_getbyhwaddr() and arp_ioctl() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Le dimanche 05 décembre 2010 à 09:19 +0100, Eric Dumazet a écrit : > Hmm.. > > If somebody can explain why RTNL is held in arp_ioctl() (and therefore > in arp_req_delete()), we might first remove RTNL use in arp_ioctl() so > that your patch can be applied. > > Right now it is not good, because RTNL wont be necessarly held when you > are going to call arp_invalidate() ? While doing this analysis, I found a refcount bug in llc, I'll send a patch for net-2.6 Meanwhile, here is the patch for net-next-2.6 Your patch then can be applied after mine. Thanks [PATCH] net: RCU conversion of dev_getbyhwaddr() and arp_ioctl() dev_getbyhwaddr() was called under RTNL. Rename it to dev_getbyhwaddr_rcu() and change all its caller to now use RCU locking instead of RTNL. Change arp_ioctl() to use RCU instead of RTNL locking. Note: this fix a dev refcount bug in llc Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- include/linux/netdevice.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index a9ac5dc26e3c..d31bc3c94717 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -1360,7 +1360,8 @@ static inline struct net_device *first_net_device(struct net *net) extern int netdev_boot_setup_check(struct net_device *dev); extern unsigned long netdev_boot_base(const char *prefix, int unit); -extern struct net_device *dev_getbyhwaddr(struct net *net, unsigned short type, char *hwaddr); +extern struct net_device *dev_getbyhwaddr_rcu(struct net *net, unsigned short type, + const char *hwaddr); extern struct net_device *dev_getfirstbyhwtype(struct net *net, unsigned short type); extern struct net_device *__dev_getfirstbyhwtype(struct net *net, unsigned short type); extern void dev_add_pack(struct packet_type *pt); -- cgit v1.2.3 From 62ab0812137ec4f9884dd7de346238841ac03283 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Mon, 6 Dec 2010 20:50:09 +0000 Subject: filter: constify sk_run_filter() sk_run_filter() doesnt write on skb, change its prototype to reflect this. Fix two af_packet comments. Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- include/linux/filter.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/filter.h b/include/linux/filter.h index 5334adaf4072..45266b75409a 100644 --- a/include/linux/filter.h +++ b/include/linux/filter.h @@ -148,7 +148,7 @@ struct sk_buff; struct sock; extern int sk_filter(struct sock *sk, struct sk_buff *skb); -extern unsigned int sk_run_filter(struct sk_buff *skb, +extern unsigned int sk_run_filter(const struct sk_buff *skb, const struct sock_filter *filter); extern int sk_attach_filter(struct sock_fprog *fprog, struct sock *sk); extern int sk_detach_filter(struct sock *sk); -- cgit v1.2.3 From 5167695753c63444a9e6cbbef136200a16c7a225 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Tue, 7 Dec 2010 14:18:20 +0100 Subject: perf: Fix duplicate events with multiple-pmu vs software events Because the multi-pmu bits can share contexts between struct pmu instances we could get duplicate events by iterating the pmu list. Signed-off-by: Peter Zijlstra Signed-off-by: Thomas Gleixner LKML-Reference: Signed-off-by: Ingo Molnar --- include/linux/perf_event.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index de2c41758e29..4f1279e105ee 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -887,6 +887,7 @@ struct perf_cpu_context { int exclusive; struct list_head rotation_list; int jiffies_interval; + struct pmu *active_pmu; }; struct perf_output_handle { -- cgit v1.2.3 From 0f004f5a696a9434b7214d0d3cbd0525ee77d428 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Tue, 30 Nov 2010 19:48:45 +0100 Subject: sched: Cure more NO_HZ load average woes There's a long-running regression that proved difficult to fix and which is hitting certain people and is rather annoying in its effects. Damien reported that after 74f5187ac8 (sched: Cure load average vs NO_HZ woes) his load average is unnaturally high, he also noted that even with that patch reverted the load avgerage numbers are not correct. The problem is that the previous patch only solved half the NO_HZ problem, it addressed the part of going into NO_HZ mode, not of comming out of NO_HZ mode. This patch implements that missing half. When comming out of NO_HZ mode there are two important things to take care of: - Folding the pending idle delta into the global active count. - Correctly aging the averages for the idle-duration. So with this patch the NO_HZ interaction should be complete and behaviour between CONFIG_NO_HZ=[yn] should be equivalent. Furthermore, this patch slightly changes the load average computation by adding a rounding term to the fixed point multiplication. Reported-by: Damien Wyart Reported-by: Tim McGrath Tested-by: Damien Wyart Tested-by: Orion Poplawski Tested-by: Kyle McMartin Signed-off-by: Peter Zijlstra Cc: stable@kernel.org Cc: Chase Douglas LKML-Reference: <1291129145.32004.874.camel@laptop> Signed-off-by: Ingo Molnar --- include/linux/sched.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index 2c79e921a68b..223874538b33 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -143,7 +143,7 @@ extern unsigned long nr_iowait_cpu(int cpu); extern unsigned long this_cpu_load(void); -extern void calc_global_load(void); +extern void calc_global_load(unsigned long ticks); extern unsigned long get_parent_ip(unsigned long addr); -- cgit v1.2.3 From 806c09a7db457be3758e14b1f152761135d89af5 Mon Sep 17 00:00:00 2001 From: Dario Faggioli Date: Tue, 30 Nov 2010 19:51:33 +0100 Subject: sched: Make pushable_tasks CONFIG_SMP dependant As noted by Peter Zijlstra at https://lkml.org/lkml/2010/11/10/391 (while reviewing other stuff, though), tracking pushable tasks only makes sense on SMP systems. Signed-off-by: Dario Faggioli Acked-by: Steven Rostedt Acked-by: Gregory Haskins Signed-off-by: Peter Zijlstra LKML-Reference: <1291143093.2697.298.camel@Palantir> Signed-off-by: Ingo Molnar --- include/linux/init_task.h | 9 ++++++++- include/linux/sched.h | 2 ++ 2 files changed, 10 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/init_task.h b/include/linux/init_task.h index 1f8c06ce0fa6..6ed8812bfe2d 100644 --- a/include/linux/init_task.h +++ b/include/linux/init_task.h @@ -12,6 +12,13 @@ #include #include +#ifdef CONFIG_SMP +# define INIT_PUSHABLE_TASKS(tsk) \ + .pushable_tasks = PLIST_NODE_INIT(tsk.pushable_tasks, MAX_PRIO), +#else +# define INIT_PUSHABLE_TASKS(tsk) +#endif + extern struct files_struct init_files; extern struct fs_struct init_fs; @@ -137,7 +144,7 @@ extern struct cred init_cred; .nr_cpus_allowed = NR_CPUS, \ }, \ .tasks = LIST_HEAD_INIT(tsk.tasks), \ - .pushable_tasks = PLIST_NODE_INIT(tsk.pushable_tasks, MAX_PRIO), \ + INIT_PUSHABLE_TASKS(tsk) \ .ptraced = LIST_HEAD_INIT(tsk.ptraced), \ .ptrace_entry = LIST_HEAD_INIT(tsk.ptrace_entry), \ .real_parent = &tsk, \ diff --git a/include/linux/sched.h b/include/linux/sched.h index 9c2d46da486e..4f92a239c14d 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1240,7 +1240,9 @@ struct task_struct { #endif struct list_head tasks; +#ifdef CONFIG_SMP struct plist_node pushable_tasks; +#endif struct mm_struct *mm, *active_mm; #if defined(SPLIT_RSS_COUNTING) -- cgit v1.2.3 From 67631510a318d5a930055fe927607f483716e100 Mon Sep 17 00:00:00 2001 From: Tom Herbert Date: Wed, 8 Dec 2010 12:16:33 -0800 Subject: tcp: Replace time wait bucket msg by counter Rather than printing the message to the log, use a mib counter to keep track of the count of occurences of time wait bucket overflow. Reduces spam in logs. Signed-off-by: Tom Herbert Signed-off-by: David S. Miller --- include/linux/snmp.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/snmp.h b/include/linux/snmp.h index ebb0c80ffd6e..12b2b18e50c1 100644 --- a/include/linux/snmp.h +++ b/include/linux/snmp.h @@ -230,6 +230,7 @@ enum LINUX_MIB_TCPMINTTLDROP, /* RFC 5082 */ LINUX_MIB_TCPDEFERACCEPTDROP, LINUX_MIB_IPRPFILTER, /* IP Reverse Path Filter (rp_filter) */ + LINUX_MIB_TCPTIMEWAITOVERFLOW, /* TCPTimeWaitOverflow */ __LINUX_MIB_MAX }; -- cgit v1.2.3 From 50b12f597be354a5a224f05c65c54c0667e57aec Mon Sep 17 00:00:00 2001 From: Helmut Schaa Date: Fri, 19 Nov 2010 12:40:25 +0100 Subject: cfg80211: Add new BSS attribute ht_opmode Add a new BSS attribute to allow hostapd to set the current HT opmode. Otherwise drivers won't be able to set up protection for HT rates in AP mode. Cc: Johannes Berg Signed-off-by: Helmut Schaa Signed-off-by: John W. Linville --- include/linux/nl80211.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index 8e28053ea423..380421253d16 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -849,6 +849,8 @@ enum nl80211_commands { * flag isn't set, the frame will be rejected. This is also used as an * nl80211 capability flag. * + * @NL80211_ATTR_BSS_HTOPMODE: HT operation mode (u16) + * * @NL80211_ATTR_MAX: highest attribute number currently defined * @__NL80211_ATTR_AFTER_LAST: internal use */ @@ -1025,6 +1027,8 @@ enum nl80211_attrs { NL80211_ATTR_OFFCHANNEL_TX_OK, + NL80211_ATTR_BSS_HT_OPMODE, + /* add attributes here, update the policy in nl80211.c */ __NL80211_ATTR_AFTER_LAST, -- cgit v1.2.3 From b7e8941b2df518186d9f7679c007f6b619bb4e89 Mon Sep 17 00:00:00 2001 From: Amitkumar Karwar Date: Tue, 7 Dec 2010 13:43:03 -0800 Subject: cfg80211: add some element IDs in enum ieee80211_eid 1)WLAN_EID_BSS_COEX_2040 2)WLAN_EID_OVERLAP_BSS_SCAN_PARAM 3)WLAN_EID_EXT_CAPABILITY Signed-off-by: Amitkumar Karwar Signed-off-by: John W. Linville --- include/linux/ieee80211.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h index ed5a03cbe184..351c0ab4e284 100644 --- a/include/linux/ieee80211.h +++ b/include/linux/ieee80211.h @@ -1223,6 +1223,9 @@ enum ieee80211_eid { WLAN_EID_BSS_AC_ACCESS_DELAY = 68, WLAN_EID_RRM_ENABLED_CAPABILITIES = 70, WLAN_EID_MULTIPLE_BSSID = 71, + WLAN_EID_BSS_COEX_2040 = 72, + WLAN_EID_OVERLAP_BSS_SCAN_PARAM = 74, + WLAN_EID_EXT_CAPABILITY = 127, WLAN_EID_MOBILITY_DOMAIN = 54, WLAN_EID_FAST_BSS_TRANSITION = 55, -- cgit v1.2.3 From 96a84c20d635fb1e98ab92f9fc517c4441f5c424 Mon Sep 17 00:00:00 2001 From: Don Zickus Date: Mon, 29 Nov 2010 17:07:16 -0500 Subject: lockup detector: Compile fixes from removing the old x86 nmi watchdog My patch that removed the old x86 nmi watchdog broke other arches. This change reverts a piece of that patch and puts the change in the correct spot. Signed-off-by: Don Zickus Reviewed-by: Cyrill Gorcunov Cc: fweisbec@gmail.com Cc: yinghai@kernel.org LKML-Reference: <1291068437-5331-2-git-send-email-dzickus@redhat.com> Signed-off-by: Ingo Molnar --- include/linux/nmi.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/nmi.h b/include/linux/nmi.h index 1c451e6ecc17..17ccf44e7dcb 100644 --- a/include/linux/nmi.h +++ b/include/linux/nmi.h @@ -16,7 +16,8 @@ */ #ifdef ARCH_HAS_NMI_WATCHDOG #include -#endif +extern void touch_nmi_watchdog(void); +#else #ifndef CONFIG_HARDLOCKUP_DETECTOR static inline void touch_nmi_watchdog(void) { @@ -25,6 +26,7 @@ static inline void touch_nmi_watchdog(void) #else extern void touch_nmi_watchdog(void); #endif +#endif /* * Create trigger_all_cpu_backtrace() out of the arch-provided -- cgit v1.2.3 From 60d509c823cca21e77d537bd356785f7cfe8f0d1 Mon Sep 17 00:00:00 2001 From: Jozsef Kadlecsik Date: Fri, 3 Dec 2010 02:39:01 +0000 Subject: The new jhash implementation The current jhash.h implements the lookup2() hash function by Bob Jenkins. However, lookup2() is outdated as Bob wrote a new hash function called lookup3(). The patch replaces the lookup2() implementation of the 'jhash*' functions with that of lookup3(). You can read a longer comparison of the two and other hash functions at http://burtleburtle.net/bob/hash/doobs.html. Signed-off-by: Jozsef Kadlecsik Acked-by: Rusty Russell Signed-off-by: David S. Miller --- include/linux/jhash.h | 183 +++++++++++++++++++++++++++++--------------------- 1 file changed, 105 insertions(+), 78 deletions(-) (limited to 'include/linux') diff --git a/include/linux/jhash.h b/include/linux/jhash.h index ced1159fa4f2..47cb09edec1a 100644 --- a/include/linux/jhash.h +++ b/include/linux/jhash.h @@ -3,129 +3,156 @@ /* jhash.h: Jenkins hash support. * - * Copyright (C) 1996 Bob Jenkins (bob_jenkins@burtleburtle.net) + * Copyright (C) 2006. Bob Jenkins (bob_jenkins@burtleburtle.net) * * http://burtleburtle.net/bob/hash/ * * These are the credits from Bob's sources: * - * lookup2.c, by Bob Jenkins, December 1996, Public Domain. - * hash(), hash2(), hash3, and mix() are externally useful functions. - * Routines to test the hash are included if SELF_TEST is defined. - * You can use this free for any purpose. It has no warranty. + * lookup3.c, by Bob Jenkins, May 2006, Public Domain. * - * Copyright (C) 2003 David S. Miller (davem@redhat.com) + * These are functions for producing 32-bit hashes for hash table lookup. + * hashword(), hashlittle(), hashlittle2(), hashbig(), mix(), and final() + * are externally useful functions. Routines to test the hash are included + * if SELF_TEST is defined. You can use this free for any purpose. It's in + * the public domain. It has no warranty. + * + * Copyright (C) 2009-2010 Jozsef Kadlecsik (kadlec@blackhole.kfki.hu) * * I've modified Bob's hash to be useful in the Linux kernel, and - * any bugs present are surely my fault. -DaveM + * any bugs present are my fault. + * Jozsef */ +#include +#include + +/* Best hash sizes are of power of two */ +#define jhash_size(n) ((u32)1<<(n)) +/* Mask the hash value, i.e (value & jhash_mask(n)) instead of (value % n) */ +#define jhash_mask(n) (jhash_size(n)-1) + +/* __jhash_mix -- mix 3 32-bit values reversibly. */ +#define __jhash_mix(a, b, c) \ +{ \ + a -= c; a ^= rol32(c, 4); c += b; \ + b -= a; b ^= rol32(a, 6); a += c; \ + c -= b; c ^= rol32(b, 8); b += a; \ + a -= c; a ^= rol32(c, 16); c += b; \ + b -= a; b ^= rol32(a, 19); a += c; \ + c -= b; c ^= rol32(b, 4); b += a; \ +} -/* NOTE: Arguments are modified. */ -#define __jhash_mix(a, b, c) \ -{ \ - a -= b; a -= c; a ^= (c>>13); \ - b -= c; b -= a; b ^= (a<<8); \ - c -= a; c -= b; c ^= (b>>13); \ - a -= b; a -= c; a ^= (c>>12); \ - b -= c; b -= a; b ^= (a<<16); \ - c -= a; c -= b; c ^= (b>>5); \ - a -= b; a -= c; a ^= (c>>3); \ - b -= c; b -= a; b ^= (a<<10); \ - c -= a; c -= b; c ^= (b>>15); \ +/* __jhash_final - final mixing of 3 32-bit values (a,b,c) into c */ +#define __jhash_final(a, b, c) \ +{ \ + c ^= b; c -= rol32(b, 14); \ + a ^= c; a -= rol32(c, 11); \ + b ^= a; b -= rol32(a, 25); \ + c ^= b; c -= rol32(b, 16); \ + a ^= c; a -= rol32(c, 4); \ + b ^= a; b -= rol32(a, 14); \ + c ^= b; c -= rol32(b, 24); \ } -/* The golden ration: an arbitrary value */ -#define JHASH_GOLDEN_RATIO 0x9e3779b9 +/* An arbitrary initial parameter */ +#define JHASH_INITVAL 0xdeadbeef -/* The most generic version, hashes an arbitrary sequence - * of bytes. No alignment or length assumptions are made about - * the input key. +/* jhash - hash an arbitrary key + * @k: sequence of bytes as key + * @length: the length of the key + * @initval: the previous hash, or an arbitray value + * + * The generic version, hashes an arbitrary sequence of bytes. + * No alignment or length assumptions are made about the input key. + * + * Returns the hash value of the key. The result depends on endianness. */ static inline u32 jhash(const void *key, u32 length, u32 initval) { - u32 a, b, c, len; + u32 a, b, c; const u8 *k = key; - len = length; - a = b = JHASH_GOLDEN_RATIO; - c = initval; - - while (len >= 12) { - a += (k[0] +((u32)k[1]<<8) +((u32)k[2]<<16) +((u32)k[3]<<24)); - b += (k[4] +((u32)k[5]<<8) +((u32)k[6]<<16) +((u32)k[7]<<24)); - c += (k[8] +((u32)k[9]<<8) +((u32)k[10]<<16)+((u32)k[11]<<24)); - - __jhash_mix(a,b,c); + /* Set up the internal state */ + a = b = c = JHASH_INITVAL + length + initval; + /* All but the last block: affect some 32 bits of (a,b,c) */ + while (length > 12) { + a += __get_unaligned_cpu32(k); + b += __get_unaligned_cpu32(k + 4); + c += __get_unaligned_cpu32(k + 8); + __jhash_mix(a, b, c); + length -= 12; k += 12; - len -= 12; } - - c += length; - switch (len) { - case 11: c += ((u32)k[10]<<24); - case 10: c += ((u32)k[9]<<16); - case 9 : c += ((u32)k[8]<<8); - case 8 : b += ((u32)k[7]<<24); - case 7 : b += ((u32)k[6]<<16); - case 6 : b += ((u32)k[5]<<8); - case 5 : b += k[4]; - case 4 : a += ((u32)k[3]<<24); - case 3 : a += ((u32)k[2]<<16); - case 2 : a += ((u32)k[1]<<8); - case 1 : a += k[0]; - }; - - __jhash_mix(a,b,c); + /* Last block: affect all 32 bits of (c) */ + /* All the case statements fall through */ + switch (length) { + case 12: c += (u32)k[11]<<24; + case 11: c += (u32)k[10]<<16; + case 10: c += (u32)k[9]<<8; + case 9: c += k[8]; + case 8: b += (u32)k[7]<<24; + case 7: b += (u32)k[6]<<16; + case 6: b += (u32)k[5]<<8; + case 5: b += k[4]; + case 4: a += (u32)k[3]<<24; + case 3: a += (u32)k[2]<<16; + case 2: a += (u32)k[1]<<8; + case 1: a += k[0]; + __jhash_final(a, b, c); + case 0: /* Nothing left to add */ + break; + } return c; } -/* A special optimized version that handles 1 or more of u32s. - * The length parameter here is the number of u32s in the key. +/* jhash2 - hash an array of u32's + * @k: the key which must be an array of u32's + * @length: the number of u32's in the key + * @initval: the previous hash, or an arbitray value + * + * Returns the hash value of the key. */ static inline u32 jhash2(const u32 *k, u32 length, u32 initval) { - u32 a, b, c, len; + u32 a, b, c; - a = b = JHASH_GOLDEN_RATIO; - c = initval; - len = length; + /* Set up the internal state */ + a = b = c = JHASH_INITVAL + (length<<2) + initval; - while (len >= 3) { + /* Handle most of the key */ + while (length > 3) { a += k[0]; b += k[1]; c += k[2]; __jhash_mix(a, b, c); - k += 3; len -= 3; + length -= 3; + k += 3; } - c += length * 4; - - switch (len) { - case 2 : b += k[1]; - case 1 : a += k[0]; - }; - - __jhash_mix(a,b,c); + /* Handle the last 3 u32's: all the case statements fall through */ + switch (length) { + case 3: c += k[2]; + case 2: b += k[1]; + case 1: a += k[0]; + __jhash_final(a, b, c); + case 0: /* Nothing left to add */ + break; + } return c; } -/* A special ultra-optimized versions that knows they are hashing exactly - * 3, 2 or 1 word(s). - * - * NOTE: In particular the "c += length; __jhash_mix(a,b,c);" normally - * done at the end is not done here. - */ +/* jhash_3words - hash exactly 3, 2 or 1 word(s) */ static inline u32 jhash_3words(u32 a, u32 b, u32 c, u32 initval) { - a += JHASH_GOLDEN_RATIO; - b += JHASH_GOLDEN_RATIO; + a += JHASH_INITVAL; + b += JHASH_INITVAL; c += initval; - __jhash_mix(a, b, c); + __jhash_final(a, b, c); return c; } -- cgit v1.2.3 From 05ac10dd6862a3fcce33d2203fbb2ef285e3ca87 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Thu, 2 Dec 2010 08:49:26 +0200 Subject: usb: musb: trivial search and replace patch change all ocurrences of musb_hdrc to musb-hdrc. We will call glue layer drivers musb-, so in order to keep things somewhat standard, let's change the underscore into a dash. Signed-off-by: Felipe Balbi --- include/linux/usb/musb.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/usb/musb.h b/include/linux/usb/musb.h index ee2dd1d506ed..e2191d4db4dd 100644 --- a/include/linux/usb/musb.h +++ b/include/linux/usb/musb.h @@ -3,7 +3,7 @@ * Inventra (Multidrop) Highspeed Dual-Role Controllers: (M)HDRC. * * Board initialization should put one of these into dev->platform_data, - * probably on some platform_device named "musb_hdrc". It encapsulates + * probably on some platform_device named "musb-hdrc". It encapsulates * key configuration differences between boards. */ -- cgit v1.2.3 From f7ec94370f417fedad4db1054228ef958d48b926 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Thu, 2 Dec 2010 09:48:58 +0200 Subject: usb: musb: pass platform_ops via platform_data ... then we don't need to export any symbols from glue layer to musb_core. Signed-off-by: Felipe Balbi --- include/linux/usb/musb.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb/musb.h b/include/linux/usb/musb.h index e2191d4db4dd..6f4e5014cf5e 100644 --- a/include/linux/usb/musb.h +++ b/include/linux/usb/musb.h @@ -126,6 +126,9 @@ struct musb_hdrc_platform_data { /* Architecture specific board data */ void *board_data; + + /* Platform specific struct musb_ops pointer */ + const void *platform_ops; }; -- cgit v1.2.3 From 3b7029670d39d22f288ece95254e9ba5ceddd6ba Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Thu, 2 Dec 2010 09:51:00 +0200 Subject: usb: musb: mark ->set_clock deprecated ... we will completely drop that need by moving clock handling to platform glue layer. Marking as deprecated will allow us to catch all users easily. Signed-off-by: Felipe Balbi --- include/linux/usb/musb.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/usb/musb.h b/include/linux/usb/musb.h index 6f4e5014cf5e..0b72b5741645 100644 --- a/include/linux/usb/musb.h +++ b/include/linux/usb/musb.h @@ -119,7 +119,7 @@ struct musb_hdrc_platform_data { int (*set_power)(int state); /* Turn device clock on or off */ - int (*set_clock)(struct clk *clock, int is_on); + int (*set_clock)(struct clk *clock, int is_on) __deprecated; /* MUSB configuration-specific details */ struct musb_hdrc_config *config; -- cgit v1.2.3 From fa56df915d101770a495569473b4c13b1904087b Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Thu, 2 Dec 2010 10:55:29 +0200 Subject: usb: musb: drop the set_clock magic now that platform glue layer handles clock completely, that function is completely useless for us. Drop it. Signed-off-by: Felipe Balbi --- include/linux/usb/musb.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/usb/musb.h b/include/linux/usb/musb.h index 0b72b5741645..0b0e383035e5 100644 --- a/include/linux/usb/musb.h +++ b/include/linux/usb/musb.h @@ -118,9 +118,6 @@ struct musb_hdrc_platform_data { /* Power the device on or off */ int (*set_power)(int state); - /* Turn device clock on or off */ - int (*set_clock)(struct clk *clock, int is_on) __deprecated; - /* MUSB configuration-specific details */ struct musb_hdrc_config *config; -- cgit v1.2.3 From e70357e35c522776d9f56f6800af4ed7a5bdbaaf Mon Sep 17 00:00:00 2001 From: Hema HK Date: Fri, 10 Dec 2010 18:09:52 +0530 Subject: mfd: TWL6030: OMAP4: Registering the TWL6030-usb device Registering the twl6030-usb transceiver device as a child to twl6030 core. Removed the NOP transceiver init call from board file. Populated twl4030_usb_data platform data structure with the function pointers for OMAP4430 internal PHY operation to be used by twl630-usb driver. Signed-off-by: Hema HK Cc: Samuel Ortiz Cc: Tony Lindgren Signed-off-by: Felipe Balbi --- include/linux/i2c/twl.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/i2c/twl.h b/include/linux/i2c/twl.h index c760991b354a..61b9609e55f2 100644 --- a/include/linux/i2c/twl.h +++ b/include/linux/i2c/twl.h @@ -593,6 +593,13 @@ enum twl4030_usb_mode { struct twl4030_usb_data { enum twl4030_usb_mode usb_mode; + + int (*phy_init)(struct device *dev); + int (*phy_exit)(struct device *dev); + /* Power on/off the PHY */ + int (*phy_power)(struct device *dev, int iD, int on); + /* enable/disable phy clocks */ + int (*phy_set_clock)(struct device *dev, int on); }; struct twl4030_ins { -- cgit v1.2.3 From dac36dd87de10d1fd81dc7b7a40256cb2e965abc Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Fri, 10 Dec 2010 01:57:07 +0900 Subject: poll: fix a typo in comment Convert duplicated sys_poll to select. As Kosaki suggests, sys_poll() and sys_select() are now hidden by SYSCALL_DEFINEx() macros so it would be better to use plain select/poll syscall name. Signed-off-by: Namhyung Kim Reviewed-by: KOSAKI Motohiro Signed-off-by: Jiri Kosina --- include/linux/poll.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/poll.h b/include/linux/poll.h index 56e76af78102..1a2ccd6f3823 100644 --- a/include/linux/poll.h +++ b/include/linux/poll.h @@ -57,7 +57,7 @@ struct poll_table_entry { }; /* - * Structures and helpers for sys_poll/sys_poll + * Structures and helpers for select/poll syscall */ struct poll_wqueues { poll_table pt; -- cgit v1.2.3 From 4291ee305e9bb0699504a66f0e2b7aefcf0512a5 Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Thu, 9 Dec 2010 19:29:03 -0800 Subject: HID: Add and use hid_: dev_ equivalents Neaten current uses of dev_ by adding and using hid specific hid_ macros. Convert existing uses of dev_ uses to hid_. Convert hid-pidff printk uses to hid_. Remove err_hid and use hid_err instead. Add missing newlines to logging messages where necessary. Coalesce format strings. Add and use pr_fmt(fmt) KBUILD_MODNAME ": " fmt Other miscellaneous changes: Add const struct hid_device * argument to hid-core functions extract() and implement() so hid_ can be used by them. Fix bad indentation in hid-core hid_input_field function that calls extract() function above. Signed-off-by: Joe Perches Signed-off-by: Jiri Kosina --- include/linux/hid.h | 32 ++++++++++++++++++++++++++------ 1 file changed, 26 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/hid.h b/include/linux/hid.h index e2af195d8b46..20b9801f669b 100644 --- a/include/linux/hid.h +++ b/include/linux/hid.h @@ -881,12 +881,32 @@ int hid_pidff_init(struct hid_device *hid); #define hid_pidff_init NULL #endif -#define dbg_hid(format, arg...) if (hid_debug) \ - printk(KERN_DEBUG "%s: " format ,\ - __FILE__ , ## arg) -#define err_hid(format, arg...) printk(KERN_ERR "%s: " format "\n" , \ - __FILE__ , ## arg) -#endif /* HID_FF */ +#define dbg_hid(format, arg...) \ +do { \ + if (hid_debug) \ + printk(KERN_DEBUG "%s: " format, __FILE__, ##arg); \ +} while (0) + +#define hid_printk(level, hid, fmt, arg...) \ + dev_printk(level, &(hid)->dev, fmt, ##arg) +#define hid_emerg(hid, fmt, arg...) \ + dev_emerg(&(hid)->dev, fmt, ##arg) +#define hid_crit(hid, fmt, arg...) \ + dev_crit(&(hid)->dev, fmt, ##arg) +#define hid_alert(hid, fmt, arg...) \ + dev_alert(&(hid)->dev, fmt, ##arg) +#define hid_err(hid, fmt, arg...) \ + dev_err(&(hid)->dev, fmt, ##arg) +#define hid_notice(hid, fmt, arg...) \ + dev_notice(&(hid)->dev, fmt, ##arg) +#define hid_warn(hid, fmt, arg...) \ + dev_warn(&(hid)->dev, fmt, ##arg) +#define hid_info(hid, fmt, arg...) \ + dev_info(&(hid)->dev, fmt, ##arg) +#define hid_dbg(hid, fmt, arg...) \ + dev_dbg(&(hid)->dev, fmt, ##arg) + +#endif /* __KERNEL__ */ #endif -- cgit v1.2.3 From 1f5a24794a54588ea3a9efd521be31d826e0b9d7 Mon Sep 17 00:00:00 2001 From: John Stultz Date: Thu, 9 Dec 2010 12:02:18 -0800 Subject: timers: Rename timerlist infrastructure to timerqueue Thomas pointed out a namespace collision between the new timerlist infrastructure I introduced and the existing timer_list.c So to avoid confusion, I've renamed the timerlist infrastructure to timerqueue. Reported-by: Thomas Gleixner Signed-off-by: John Stultz --- include/linux/timerlist.h | 37 ------------------------------------- include/linux/timerqueue.h | 37 +++++++++++++++++++++++++++++++++++++ 2 files changed, 37 insertions(+), 37 deletions(-) delete mode 100644 include/linux/timerlist.h create mode 100644 include/linux/timerqueue.h (limited to 'include/linux') diff --git a/include/linux/timerlist.h b/include/linux/timerlist.h deleted file mode 100644 index c46b28ae6e4d..000000000000 --- a/include/linux/timerlist.h +++ /dev/null @@ -1,37 +0,0 @@ -#ifndef _LINUX_TIMERLIST_H -#define _LINUX_TIMERLIST_H - -#include -#include - - -struct timerlist_node { - struct rb_node node; - ktime_t expires; -}; - -struct timerlist_head { - struct rb_root head; - struct timerlist_node *next; -}; - - -extern void timerlist_add(struct timerlist_head *head, - struct timerlist_node *node); -extern void timerlist_del(struct timerlist_head *head, - struct timerlist_node *node); -extern struct timerlist_node *timerlist_getnext(struct timerlist_head *head); -extern struct timerlist_node *timerlist_iterate_next( - struct timerlist_node *node); - -static inline void timerlist_init(struct timerlist_node *node) -{ - RB_CLEAR_NODE(&node->node); -} - -static inline void timerlist_init_head(struct timerlist_head *head) -{ - head->head = RB_ROOT; - head->next = NULL; -} -#endif /* _LINUX_TIMERLIST_H */ diff --git a/include/linux/timerqueue.h b/include/linux/timerqueue.h new file mode 100644 index 000000000000..406b103894bd --- /dev/null +++ b/include/linux/timerqueue.h @@ -0,0 +1,37 @@ +#ifndef _LINUX_TIMERQUEUE_H +#define _LINUX_TIMERQUEUE_H + +#include +#include + + +struct timerqueue_node { + struct rb_node node; + ktime_t expires; +}; + +struct timerqueue_head { + struct rb_root head; + struct timerqueue_node *next; +}; + + +extern void timerqueue_add(struct timerqueue_head *head, + struct timerqueue_node *node); +extern void timerqueue_del(struct timerqueue_head *head, + struct timerqueue_node *node); +extern struct timerqueue_node *timerqueue_getnext(struct timerqueue_head *head); +extern struct timerqueue_node *timerqueue_iterate_next( + struct timerqueue_node *node); + +static inline void timerqueue_init(struct timerqueue_node *node) +{ + RB_CLEAR_NODE(&node->node); +} + +static inline void timerqueue_init_head(struct timerqueue_head *head) +{ + head->head = RB_ROOT; + head->next = NULL; +} +#endif /* _LINUX_TIMERQUEUE_H */ -- cgit v1.2.3 From 998adc3dda59f811966b3ccb21eb223680b25ec4 Mon Sep 17 00:00:00 2001 From: John Stultz Date: Mon, 20 Sep 2010 19:19:17 -0700 Subject: hrtimers: Convert hrtimers to use timerlist infrastructure Converts the hrtimer code to use the new timerlist infrastructure Signed-off-by: John Stultz LKML Reference: <1290136329-18291-3-git-send-email-john.stultz@linaro.org> Reviewed-by: Thomas Gleixner CC: Alessandro Zummo CC: Thomas Gleixner CC: Richard Cochran --- include/linux/hrtimer.h | 32 +++++++++++++++----------------- 1 file changed, 15 insertions(+), 17 deletions(-) (limited to 'include/linux') diff --git a/include/linux/hrtimer.h b/include/linux/hrtimer.h index dd9954b79342..330586ffffbb 100644 --- a/include/linux/hrtimer.h +++ b/include/linux/hrtimer.h @@ -22,7 +22,7 @@ #include #include #include - +#include struct hrtimer_clock_base; struct hrtimer_cpu_base; @@ -79,8 +79,8 @@ enum hrtimer_restart { /** * struct hrtimer - the basic hrtimer structure - * @node: red black tree node for time ordered insertion - * @_expires: the absolute expiry time in the hrtimers internal + * @node: timerqueue node, which also manages node.expires, + * the absolute expiry time in the hrtimers internal * representation. The time is related to the clock on * which the timer is based. Is setup by adding * slack to the _softexpires value. For non range timers @@ -101,8 +101,7 @@ enum hrtimer_restart { * The hrtimer structure must be initialized by hrtimer_init() */ struct hrtimer { - struct rb_node node; - ktime_t _expires; + struct timerqueue_node node; ktime_t _softexpires; enum hrtimer_restart (*function)(struct hrtimer *); struct hrtimer_clock_base *base; @@ -141,8 +140,7 @@ struct hrtimer_sleeper { struct hrtimer_clock_base { struct hrtimer_cpu_base *cpu_base; clockid_t index; - struct rb_root active; - struct rb_node *first; + struct timerqueue_head active; ktime_t resolution; ktime_t (*get_time)(void); ktime_t softirq_time; @@ -183,43 +181,43 @@ struct hrtimer_cpu_base { static inline void hrtimer_set_expires(struct hrtimer *timer, ktime_t time) { - timer->_expires = time; + timer->node.expires = time; timer->_softexpires = time; } static inline void hrtimer_set_expires_range(struct hrtimer *timer, ktime_t time, ktime_t delta) { timer->_softexpires = time; - timer->_expires = ktime_add_safe(time, delta); + timer->node.expires = ktime_add_safe(time, delta); } static inline void hrtimer_set_expires_range_ns(struct hrtimer *timer, ktime_t time, unsigned long delta) { timer->_softexpires = time; - timer->_expires = ktime_add_safe(time, ns_to_ktime(delta)); + timer->node.expires = ktime_add_safe(time, ns_to_ktime(delta)); } static inline void hrtimer_set_expires_tv64(struct hrtimer *timer, s64 tv64) { - timer->_expires.tv64 = tv64; + timer->node.expires.tv64 = tv64; timer->_softexpires.tv64 = tv64; } static inline void hrtimer_add_expires(struct hrtimer *timer, ktime_t time) { - timer->_expires = ktime_add_safe(timer->_expires, time); + timer->node.expires = ktime_add_safe(timer->node.expires, time); timer->_softexpires = ktime_add_safe(timer->_softexpires, time); } static inline void hrtimer_add_expires_ns(struct hrtimer *timer, u64 ns) { - timer->_expires = ktime_add_ns(timer->_expires, ns); + timer->node.expires = ktime_add_ns(timer->node.expires, ns); timer->_softexpires = ktime_add_ns(timer->_softexpires, ns); } static inline ktime_t hrtimer_get_expires(const struct hrtimer *timer) { - return timer->_expires; + return timer->node.expires; } static inline ktime_t hrtimer_get_softexpires(const struct hrtimer *timer) @@ -229,7 +227,7 @@ static inline ktime_t hrtimer_get_softexpires(const struct hrtimer *timer) static inline s64 hrtimer_get_expires_tv64(const struct hrtimer *timer) { - return timer->_expires.tv64; + return timer->node.expires.tv64; } static inline s64 hrtimer_get_softexpires_tv64(const struct hrtimer *timer) { @@ -238,12 +236,12 @@ static inline s64 hrtimer_get_softexpires_tv64(const struct hrtimer *timer) static inline s64 hrtimer_get_expires_ns(const struct hrtimer *timer) { - return ktime_to_ns(timer->_expires); + return ktime_to_ns(timer->node.expires); } static inline ktime_t hrtimer_expires_remaining(const struct hrtimer *timer) { - return ktime_sub(timer->_expires, timer->base->get_time()); + return ktime_sub(timer->node.expires, timer->base->get_time()); } #ifdef CONFIG_HIGH_RES_TIMERS -- cgit v1.2.3 From 352a337832774a6929c16b569abe9cedc3db01cc Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Thu, 9 Dec 2010 22:46:29 +0100 Subject: USB: otg: fix link breakage, when the NOP USB Xceiver is a module If the NOP USB OTG transceiver driver is built as a module, the otg.h header declares external functions, but if they are referenced from the kernel proper, as, e.g., in the OMAP3 case, where the omap3evm board is calling the usb_nop_xceiv_register() function, linkage breaks. This patch fixes this problem. Signed-off-by: Guennadi Liakhovetski Signed-off-by: Greg Kroah-Hartman --- include/linux/usb/otg.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/usb/otg.h b/include/linux/usb/otg.h index 0a5b3711e502..a1a1e7a73ec9 100644 --- a/include/linux/usb/otg.h +++ b/include/linux/usb/otg.h @@ -116,7 +116,7 @@ struct otg_transceiver { /* for board-specific init logic */ extern int otg_set_transceiver(struct otg_transceiver *); -#if defined(CONFIG_NOP_USB_XCEIV) || defined(CONFIG_NOP_USB_XCEIV_MODULE) +#if defined(CONFIG_NOP_USB_XCEIV) || (defined(CONFIG_NOP_USB_XCEIV_MODULE) && defined(MODULE)) /* sometimes transceivers are accessed only through e.g. ULPI */ extern void usb_nop_xceiv_register(void); extern void usb_nop_xceiv_unregister(void); -- cgit v1.2.3 From e0c201f339fe7fc38d1b0f6f4755ff627686c7e0 Mon Sep 17 00:00:00 2001 From: Pavankumar Kondeti Date: Tue, 7 Dec 2010 17:53:55 +0530 Subject: USB: Add MSM OTG Controller driver This driver implements PHY initialization, clock management, ULPI IO ops and simple OTG state machine to kick host/peripheral based on Id/VBUS line status. VBUS/Id lines are tied to a reference voltage on some boards. Hence provide debugfs interface to select host/peripheral mode. Signed-off-by: Pavankumar Kondeti Signed-off-by: Greg Kroah-Hartman --- include/linux/usb/msm_hsusb.h | 108 +++++++++++++++++++++++++++++++++++++++ include/linux/usb/msm_hsusb_hw.h | 56 ++++++++++++++++++++ 2 files changed, 164 insertions(+) create mode 100644 include/linux/usb/msm_hsusb.h create mode 100644 include/linux/usb/msm_hsusb_hw.h (limited to 'include/linux') diff --git a/include/linux/usb/msm_hsusb.h b/include/linux/usb/msm_hsusb.h new file mode 100644 index 000000000000..b796df94ec72 --- /dev/null +++ b/include/linux/usb/msm_hsusb.h @@ -0,0 +1,108 @@ +/* linux/include/asm-arm/arch-msm/hsusb.h + * + * Copyright (C) 2008 Google, Inc. + * Author: Brian Swetland + * Copyright (c) 2009-2010, Code Aurora Forum. All rights reserved. + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#ifndef __ASM_ARCH_MSM_HSUSB_H +#define __ASM_ARCH_MSM_HSUSB_H + +#include +#include + +/** + * Supported USB modes + * + * USB_PERIPHERAL Only peripheral mode is supported. + * USB_HOST Only host mode is supported. + * USB_OTG OTG mode is supported. + * + */ +enum usb_mode_type { + USB_NONE = 0, + USB_PERIPHERAL, + USB_HOST, + USB_OTG, +}; + +/** + * OTG control + * + * OTG_NO_CONTROL Id/VBUS notifications not required. Useful in host + * only configuration. + * OTG_PHY_CONTROL Id/VBUS notifications comes form USB PHY. + * OTG_PMIC_CONTROL Id/VBUS notifications comes from PMIC hardware. + * OTG_USER_CONTROL Id/VBUS notifcations comes from User via sysfs. + * + */ +enum otg_control_type { + OTG_NO_CONTROL = 0, + OTG_PHY_CONTROL, + OTG_PMIC_CONTROL, + OTG_USER_CONTROL, +}; + +/** + * struct msm_otg_platform_data - platform device data + * for msm72k_otg driver. + * @phy_init_seq: PHY configuration sequence. val, reg pairs + * terminated by -1. + * @vbus_power: VBUS power on/off routine. + * @power_budget: VBUS power budget in mA (0 will be treated as 500mA). + * @mode: Supported mode (OTG/peripheral/host). + * @otg_control: OTG switch controlled by user/Id pin + * @default_mode: Default operational mode. Applicable only if + * OTG switch is controller by user. + * + */ +struct msm_otg_platform_data { + int *phy_init_seq; + void (*vbus_power)(bool on); + unsigned power_budget; + enum usb_mode_type mode; + enum otg_control_type otg_control; + enum usb_mode_type default_mode; + void (*setup_gpio)(enum usb_otg_state state); +}; + +/** + * struct msm_otg: OTG driver data. Shared by HCD and DCD. + * @otg: USB OTG Transceiver structure. + * @pdata: otg device platform data. + * @irq: IRQ number assigned for HSUSB controller. + * @clk: clock struct of usb_hs_clk. + * @pclk: clock struct of usb_hs_pclk. + * @phy_reset_clk: clock struct of usb_phy_clk. + * @core_clk: clock struct of usb_hs_core_clk. + * @regs: ioremapped register base address. + * @inputs: OTG state machine inputs(Id, SessValid etc). + * @sm_work: OTG state machine work. + * + */ +struct msm_otg { + struct otg_transceiver otg; + struct msm_otg_platform_data *pdata; + int irq; + struct clk *clk; + struct clk *pclk; + struct clk *phy_reset_clk; + struct clk *core_clk; + void __iomem *regs; +#define ID 0 +#define B_SESS_VLD 1 + unsigned long inputs; + struct work_struct sm_work; +}; + +#endif diff --git a/include/linux/usb/msm_hsusb_hw.h b/include/linux/usb/msm_hsusb_hw.h new file mode 100644 index 000000000000..b061cffcf048 --- /dev/null +++ b/include/linux/usb/msm_hsusb_hw.h @@ -0,0 +1,56 @@ +/* + * Copyright (C) 2007 Google, Inc. + * Author: Brian Swetland + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#ifndef __LINUX_USB_GADGET_MSM72K_UDC_H__ +#define __LINUX_USB_GADGET_MSM72K_UDC_H__ + +#ifdef CONFIG_ARCH_MSM7X00A +#define USB_SBUSCFG (MSM_USB_BASE + 0x0090) +#else +#define USB_AHBBURST (MSM_USB_BASE + 0x0090) +#define USB_AHBMODE (MSM_USB_BASE + 0x0098) +#endif +#define USB_CAPLENGTH (MSM_USB_BASE + 0x0100) /* 8 bit */ + +#define USB_USBCMD (MSM_USB_BASE + 0x0140) +#define USB_PORTSC (MSM_USB_BASE + 0x0184) +#define USB_OTGSC (MSM_USB_BASE + 0x01A4) +#define USB_USBMODE (MSM_USB_BASE + 0x01A8) + +#define USBCMD_RESET 2 +#define USB_USBINTR (MSM_USB_BASE + 0x0148) + +#define PORTSC_PHCD (1 << 23) /* phy suspend mode */ +#define PORTSC_PTS_MASK (3 << 30) +#define PORTSC_PTS_ULPI (3 << 30) + +#define USB_ULPI_VIEWPORT (MSM_USB_BASE + 0x0170) +#define ULPI_RUN (1 << 30) +#define ULPI_WRITE (1 << 29) +#define ULPI_READ (0 << 29) +#define ULPI_ADDR(n) (((n) & 255) << 16) +#define ULPI_DATA(n) ((n) & 255) +#define ULPI_DATA_READ(n) (((n) >> 8) & 255) + +/* OTG definitions */ +#define OTGSC_INTSTS_MASK (0x7f << 16) +#define OTGSC_ID (1 << 8) +#define OTGSC_BSV (1 << 11) +#define OTGSC_IDIS (1 << 16) +#define OTGSC_BSVIS (1 << 19) +#define OTGSC_IDIE (1 << 24) +#define OTGSC_BSVIE (1 << 27) + +#endif /* __LINUX_USB_GADGET_MSM72K_UDC_H__ */ -- cgit v1.2.3 From 87c0104af742af2acfcbd685f2b9a40f33770dc0 Mon Sep 17 00:00:00 2001 From: Pavankumar Kondeti Date: Tue, 7 Dec 2010 17:53:58 +0530 Subject: USB: OTG: msm: Add support for power management Implement runtime and system pm ops to put hardware into low power mode (LPM). As part of LPM, USB clocks are turned off, PHY is put into suspend state and PHY comparators are turned off if VBUS/Id notifications are not required from PHY. Signed-off-by: Pavankumar Kondeti Signed-off-by: Greg Kroah-Hartman --- include/linux/usb/msm_hsusb.h | 4 ++++ include/linux/usb/msm_hsusb_hw.h | 3 +++ 2 files changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb/msm_hsusb.h b/include/linux/usb/msm_hsusb.h index b796df94ec72..3675e03b1539 100644 --- a/include/linux/usb/msm_hsusb.h +++ b/include/linux/usb/msm_hsusb.h @@ -88,6 +88,8 @@ struct msm_otg_platform_data { * @regs: ioremapped register base address. * @inputs: OTG state machine inputs(Id, SessValid etc). * @sm_work: OTG state machine work. + * @in_lpm: indicates low power mode (LPM) state. + * @async_int: Async interrupt arrived. * */ struct msm_otg { @@ -103,6 +105,8 @@ struct msm_otg { #define B_SESS_VLD 1 unsigned long inputs; struct work_struct sm_work; + atomic_t in_lpm; + int async_int; }; #endif diff --git a/include/linux/usb/msm_hsusb_hw.h b/include/linux/usb/msm_hsusb_hw.h index b061cffcf048..b92e17349c7b 100644 --- a/include/linux/usb/msm_hsusb_hw.h +++ b/include/linux/usb/msm_hsusb_hw.h @@ -44,6 +44,9 @@ #define ULPI_DATA(n) ((n) & 255) #define ULPI_DATA_READ(n) (((n) >> 8) & 255) +#define ASYNC_INTR_CTRL (1 << 29) /* Enable async interrupt */ +#define ULPI_STP_CTRL (1 << 30) /* Block communication with PHY */ + /* OTG definitions */ #define OTGSC_INTSTS_MASK (0x7f << 16) #define OTGSC_ID (1 << 8) -- cgit v1.2.3 From 35d2856b4693e8de5d616307b56cef296b839157 Mon Sep 17 00:00:00 2001 From: Martin Willi Date: Wed, 8 Dec 2010 04:37:49 +0000 Subject: xfrm: Add Traffic Flow Confidentiality padding XFRM attribute The XFRMA_TFCPAD attribute for XFRM state installation configures Traffic Flow Confidentiality by padding ESP packets to a specified length. Signed-off-by: Martin Willi Acked-by: Herbert Xu Signed-off-by: David S. Miller --- include/linux/xfrm.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/xfrm.h b/include/linux/xfrm.h index b971e3848493..930fdd2de79c 100644 --- a/include/linux/xfrm.h +++ b/include/linux/xfrm.h @@ -283,6 +283,7 @@ enum xfrm_attr_type_t { XFRMA_KMADDRESS, /* struct xfrm_user_kmaddress */ XFRMA_ALG_AUTH_TRUNC, /* struct xfrm_algo_auth */ XFRMA_MARK, /* struct xfrm_mark */ + XFRMA_TFCPAD, /* __u32 */ __XFRMA_MAX #define XFRMA_MAX (__XFRMA_MAX - 1) -- cgit v1.2.3 From a3ae0fc34f58e7163b7724feb3d77aa4603f0dc3 Mon Sep 17 00:00:00 2001 From: Jamie Iles Date: Wed, 1 Dec 2010 23:39:36 +0000 Subject: 8250: add a UPIO_DWAPB32 for 32 bit accesses Some platforms contain a Synopsys DesignWare APB UART that is attached to a 32-bit APB bus where sub-word accesses are not allowed. Add a new IO type (UPIO_DWAPB32) that performs 32 bit acccesses to the UART. v2: - don't test for 32 bit in the output fast path, provide a separate dwabp32_serial_out() function. Refactor dwabp_serial_out() so that we can reuse the LCR saving code. v3: - rebased on top of "8250: use container_of() instead of casting" Signed-off-by: Jamie Iles Signed-off-by: Greg Kroah-Hartman --- include/linux/serial_core.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index 9ff9b7db293b..7a6daf189995 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -314,6 +314,7 @@ struct uart_port { #define UPIO_TSI (5) /* Tsi108/109 type IO */ #define UPIO_DWAPB (6) /* DesignWare APB UART */ #define UPIO_RM9000 (7) /* RM9000 type IO */ +#define UPIO_DWAPB32 (8) /* DesignWare APB UART (32 bit accesses) */ unsigned int read_status_mask; /* driver specific */ unsigned int ignore_status_mask; /* driver specific */ -- cgit v1.2.3 From d9ca676bcb26e1fdff9265a3e70f697cd381c889 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Wed, 8 Dec 2010 19:40:47 +0000 Subject: atm: correct sysfs 'device' link creation and parent relationships The ATM subsystem was incorrectly creating the 'device' link for ATM nodes in sysfs. This led to incorrect device/parent relationships exposed by sysfs and udev. Instead of rolling the 'device' link by hand in the generic ATM code, pass each ATM driver's bus device down to the sysfs code and let sysfs do this stuff correctly. Signed-off-by: Dan Williams Signed-off-by: David S. Miller --- include/linux/atmdev.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/atmdev.h b/include/linux/atmdev.h index a8e4e832cdbb..475f8c42c0e9 100644 --- a/include/linux/atmdev.h +++ b/include/linux/atmdev.h @@ -427,8 +427,10 @@ extern rwlock_t vcc_sklist_lock; #define ATM_SKB(skb) (((struct atm_skb_data *) (skb)->cb)) -struct atm_dev *atm_dev_register(const char *type,const struct atmdev_ops *ops, - int number,unsigned long *flags); /* number == -1: pick first available */ +struct atm_dev *atm_dev_register(const char *type, struct device *parent, + const struct atmdev_ops *ops, + int number, /* -1 == pick first available */ + unsigned long *flags); struct atm_dev *atm_dev_lookup(int number); void atm_dev_deregister(struct atm_dev *dev); -- cgit v1.2.3 From e596e6e4d578f2639416e620d367a3af34814a40 Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Thu, 9 Dec 2010 12:08:35 +0000 Subject: ethtool: Report link-down while interface is down While an interface is down, many implementations of ethtool_ops::get_link, including the default, ethtool_op_get_link(), will report the last link state seen while the interface was up. In general the current physical link state is not available if the interface is down. Define ETHTOOL_GLINK to reflect whether the interface *and* any physical port have a working link, and consistently return 0 when the interface is down. Signed-off-by: Ben Hutchings Signed-off-by: David S. Miller --- include/linux/ethtool.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h index 6628a507fd3b..1908929204a9 100644 --- a/include/linux/ethtool.h +++ b/include/linux/ethtool.h @@ -691,7 +691,9 @@ struct ethtool_ops { #define ETHTOOL_GMSGLVL 0x00000007 /* Get driver message level */ #define ETHTOOL_SMSGLVL 0x00000008 /* Set driver msg level. */ #define ETHTOOL_NWAY_RST 0x00000009 /* Restart autonegotiation. */ -#define ETHTOOL_GLINK 0x0000000a /* Get link status (ethtool_value) */ +/* Get link status for host, i.e. whether the interface *and* the + * physical port (if there is one) are up (ethtool_value). */ +#define ETHTOOL_GLINK 0x0000000a #define ETHTOOL_GEEPROM 0x0000000b /* Get EEPROM data */ #define ETHTOOL_SEEPROM 0x0000000c /* Set EEPROM data. */ #define ETHTOOL_GCOALESCE 0x0000000e /* Get coalesce config */ -- cgit v1.2.3 From 6610e0893b8bc6f59b14fed7f089c5997f035f88 Mon Sep 17 00:00:00 2001 From: John Stultz Date: Thu, 23 Sep 2010 15:07:34 -0700 Subject: RTC: Rework RTC code to use timerqueue for events This patch reworks a large portion of the generic RTC code to in-effect virtualize the rtc interrupt code. The current RTC interface is very much a raw hardware interface. Via the proc, /dev/, or sysfs interfaces, applciations can set the hardware to trigger interrupts in one of three modes: AIE: Alarm interrupt UIE: Update interrupt (ie: once per second) PIE: Periodic interrupt (sub-second irqs) The problem with this interface is that it limits the RTC hardware so it can only be used by one application at a time. The purpose of this patch is to extend the RTC code so that we can multiplex multiple applications event needs onto a single RTC device. This is done by utilizing the timerqueue infrastructure to manage a list of events, which cause the RTC hardware to be programmed to fire an interrupt for the next event in the list. In order to preserve the functionality of the exsting proc,/dev/ and sysfs interfaces, we emulate the different interrupt modes as follows: AIE: We create a rtc_timer dedicated to AIE mode interrupts. There is only one per device, so we don't change existing interface semantics. UIE: Again, a dedicated rtc_timer, set for periodic mode, is used to emulate UIE interrupts. Again, only one per device. PIE: Since PIE mode interrupts fire faster then the RTC's clock read granularity, we emulate PIE mode interrupts using a hrtimer. Again, one per device. With this patch, the rtctest.c application in Documentation/rtc.txt passes fine on x86 hardware. However, there may very well still be bugs, so greatly I'd appreciate any feedback or testing! Signed-off-by: John Stultz LKML Reference: <1290136329-18291-4-git-send-email-john.stultz@linaro.org> Acked-by: Alessandro Zummo Reviewed-by: Thomas Gleixner CC: Alessandro Zummo CC: Thomas Gleixner CC: Richard Cochran --- include/linux/rtc.h | 43 ++++++++++++++++++++++++++++++++++++++----- 1 file changed, 38 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/rtc.h b/include/linux/rtc.h index 14dbc83ded20..a3421abca703 100644 --- a/include/linux/rtc.h +++ b/include/linux/rtc.h @@ -107,12 +107,17 @@ extern int rtc_year_days(unsigned int day, unsigned int month, unsigned int year extern int rtc_valid_tm(struct rtc_time *tm); extern int rtc_tm_to_time(struct rtc_time *tm, unsigned long *time); extern void rtc_time_to_tm(unsigned long time, struct rtc_time *tm); +ktime_t rtc_tm_to_ktime(struct rtc_time tm); +struct rtc_time rtc_ktime_to_tm(ktime_t kt); + #include #include #include #include #include +#include +#include extern struct class *rtc_class; @@ -151,7 +156,19 @@ struct rtc_class_ops { }; #define RTC_DEVICE_NAME_SIZE 20 -struct rtc_task; +typedef struct rtc_task { + void (*func)(void *private_data); + void *private_data; +} rtc_task_t; + + +struct rtc_timer { + struct rtc_task task; + struct timerqueue_node node; + ktime_t period; + int enabled; +}; + /* flags */ #define RTC_DEV_BUSY 0 @@ -179,6 +196,15 @@ struct rtc_device spinlock_t irq_task_lock; int irq_freq; int max_user_freq; + + struct timerqueue_head timerqueue; + struct rtc_timer aie_timer; + struct rtc_timer uie_rtctimer; + struct hrtimer pie_timer; /* sub second exp, so needs hrtimer */ + int pie_enabled; + struct work_struct irqwork; + + #ifdef CONFIG_RTC_INTF_DEV_UIE_EMUL struct work_struct uie_task; struct timer_list uie_timer; @@ -224,15 +250,22 @@ extern int rtc_alarm_irq_enable(struct rtc_device *rtc, unsigned int enabled); extern int rtc_dev_update_irq_enable_emul(struct rtc_device *rtc, unsigned int enabled); -typedef struct rtc_task { - void (*func)(void *private_data); - void *private_data; -} rtc_task_t; +void rtc_aie_update_irq(void *private); +void rtc_uie_update_irq(void *private); +enum hrtimer_restart rtc_pie_update_irq(struct hrtimer *timer); int rtc_register(rtc_task_t *task); int rtc_unregister(rtc_task_t *task); int rtc_control(rtc_task_t *t, unsigned int cmd, unsigned long arg); +void rtctimer_enqueue(struct rtc_device *rtc, struct rtc_timer *timer); +void rtctimer_remove(struct rtc_device *rtc, struct rtc_timer *timer); +void rtctimer_init(struct rtc_timer *timer, void (*f)(void* p), void* data); +int rtctimer_start(struct rtc_device *rtc, struct rtc_timer* timer, + ktime_t expires, ktime_t period); +int rtctimer_cancel(struct rtc_device *rtc, struct rtc_timer* timer); +void rtctimer_do_work(struct work_struct *work); + static inline bool is_leap_year(unsigned int year) { return (!(year % 4) && (year % 100)) || !(year % 400); -- cgit v1.2.3 From 042620a018afcfba1d678062b62e463b9e43a68d Mon Sep 17 00:00:00 2001 From: John Stultz Date: Thu, 14 Oct 2010 16:22:33 -0700 Subject: RTC: Remove UIE emulation Since we provide UIE interrupts via a rtc_timer, the old emulation code can be removed. Signed-off-by: John Stultz LKML Reference: <1290136329-18291-5-git-send-email-john.stultz@linaro.org> Acked-by: Alessandro Zummo Reviewed-by: Thomas Gleixner CC: Alessandro Zummo CC: Thomas Gleixner CC: Richard Cochran --- include/linux/rtc.h | 12 ------------ 1 file changed, 12 deletions(-) (limited to 'include/linux') diff --git a/include/linux/rtc.h b/include/linux/rtc.h index a3421abca703..44e18a2523a3 100644 --- a/include/linux/rtc.h +++ b/include/linux/rtc.h @@ -203,18 +203,6 @@ struct rtc_device struct hrtimer pie_timer; /* sub second exp, so needs hrtimer */ int pie_enabled; struct work_struct irqwork; - - -#ifdef CONFIG_RTC_INTF_DEV_UIE_EMUL - struct work_struct uie_task; - struct timer_list uie_timer; - /* Those fields are protected by rtc->irq_lock */ - unsigned int oldsecs; - unsigned int uie_irq_active:1; - unsigned int stop_uie_polling:1; - unsigned int uie_task_active:1; - unsigned int uie_timer_active:1; -#endif }; #define to_rtc_device(d) container_of(d, struct rtc_device, dev) -- cgit v1.2.3 From d90aa92c0c1625d7f02050e4d2924805840cda3d Mon Sep 17 00:00:00 2001 From: Lin Ming Date: Thu, 9 Dec 2010 16:50:52 +0800 Subject: acpi: fix _OSI string setup regression commit b0ed7a91(ACPICA/ACPI: Add new host interfaces for _OSI suppor) introduced a regression that _OSI string setup fails. There are 2 paths to setup _OSI string. DMI: acpi_dmi_osi_linux -> set_osi_linux -> acpi_osi_setup -> copy _OSI string to osi_setup_string Boot command line: acpi_osi_setup -> copy _OSI string to osi_setup_string Later, acpi_osi_setup_late will be called to handle osi_setup_string. If _OSI string is "Linux" or "!Linux", then the call path is, acpi_osi_setup_late -> acpi_cmdline_osi_linux -> set_osi_linux -> acpi_osi_setup -> copy _OSI string to osi_setup_string This actually never installs _OSI string(acpi_install_interface not called), but just copy the _OSI string to osi_setup_string. This patch fixes the regression. Reported-and-tested-by: Lukas Hejtmanek Signed-off-by: Lin Ming Signed-off-by: Len Brown --- include/linux/acpi.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 050a7bccb836..67c91b4418b0 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -219,7 +219,7 @@ static inline int acpi_video_display_switch_support(void) extern int acpi_blacklisted(void); extern void acpi_dmi_osi_linux(int enable, const struct dmi_system_id *d); -extern int acpi_osi_setup(char *str); +extern void acpi_osi_setup(char *str); #ifdef CONFIG_ACPI_NUMA int acpi_get_pxm(acpi_handle handle); -- cgit v1.2.3 From 3353bebe7c89725ab2f476b9d8d618259402d52e Mon Sep 17 00:00:00 2001 From: Len Brown Date: Tue, 30 Nov 2010 18:21:46 -0500 Subject: ACPI: video: fix build for VIDEO_OUTPUT_CONTROL=n drivers/built-in.o: In function `acpi_video_bus_put_devices': video.c:(.text+0x79663): undefined reference to `video_output_unregister' drivers/built-in.o: In function `acpi_video_bus_add': video.c:(.text+0x7b0b3): undefined reference to `video_output_register' Signed-off-by: Len Brown --- include/linux/video_output.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'include/linux') diff --git a/include/linux/video_output.h b/include/linux/video_output.h index 2fb46bc9340d..ed5cdeb3604d 100644 --- a/include/linux/video_output.h +++ b/include/linux/video_output.h @@ -23,6 +23,7 @@ #ifndef _LINUX_VIDEO_OUTPUT_H #define _LINUX_VIDEO_OUTPUT_H #include +#include struct output_device; struct output_properties { int (*set_state)(struct output_device *); @@ -34,9 +35,23 @@ struct output_device { struct device dev; }; #define to_output_device(obj) container_of(obj, struct output_device, dev) +#if defined(CONFIG_VIDEO_OUTPUT_CONTROL) || defined(CONFIG_VIDEO_OUTPUT_CONTROL_MODULE) struct output_device *video_output_register(const char *name, struct device *dev, void *devdata, struct output_properties *op); void video_output_unregister(struct output_device *dev); +#else +static struct output_device *video_output_register(const char *name, + struct device *dev, + void *devdata, + struct output_properties *op) +{ + return ERR_PTR(-ENODEV); +} +static void video_output_unregister(struct output_device *dev) +{ + return; +} +#endif #endif -- cgit v1.2.3 From 45f74264e18449cf3c93cccaf098ee6e9524ab78 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Sat, 11 Dec 2010 12:34:34 +0100 Subject: timerqueue: Make timerqueue_getnext() static inline No point in calling a function just to dereference a pointer. Signed-off-by: Thomas Gleixner Cc: John Stultz --- include/linux/timerqueue.h | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/timerqueue.h b/include/linux/timerqueue.h index 406b103894bd..d24aabaca474 100644 --- a/include/linux/timerqueue.h +++ b/include/linux/timerqueue.h @@ -20,10 +20,23 @@ extern void timerqueue_add(struct timerqueue_head *head, struct timerqueue_node *node); extern void timerqueue_del(struct timerqueue_head *head, struct timerqueue_node *node); -extern struct timerqueue_node *timerqueue_getnext(struct timerqueue_head *head); extern struct timerqueue_node *timerqueue_iterate_next( struct timerqueue_node *node); +/** + * timerqueue_getnext - Returns the timer with the earlies expiration time + * + * @head: head of timerqueue + * + * Returns a pointer to the timer node that has the + * earliest expiration time. + */ +static inline +struct timerqueue_node *timerqueue_getnext(struct timerqueue_head *head) +{ + return head->next; +} + static inline void timerqueue_init(struct timerqueue_node *node) { RB_CLEAR_NODE(&node->node); -- cgit v1.2.3 From dbd2fd656f2060abfd3a16257f8b51ec60f6d2ed Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Thu, 9 Dec 2010 19:58:59 +0100 Subject: cfg80211/nl80211: separate unicast/multicast default TX keys Allow userspace to specify that a given key is default only for unicast and/or multicast transmissions. Only WEP keys are for both, WPA/RSN keys set here are GTKs for multicast only. For more future flexibility, allow to specify all combiations. Wireless extensions can only set both so use nl80211; WEP keys (connect keys) must be set as default for both (but 802.1X WEP is still possible). Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- include/linux/nl80211.h | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index 380421253d16..b8fa25d741ba 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -851,6 +851,10 @@ enum nl80211_commands { * * @NL80211_ATTR_BSS_HTOPMODE: HT operation mode (u16) * + * @NL80211_ATTR_KEY_DEFAULT_TYPES: A nested attribute containing flags + * attributes, specifying what a key should be set as default as. + * See &enum nl80211_key_default_types. + * * @NL80211_ATTR_MAX: highest attribute number currently defined * @__NL80211_ATTR_AFTER_LAST: internal use */ @@ -1029,6 +1033,8 @@ enum nl80211_attrs { NL80211_ATTR_BSS_HT_OPMODE, + NL80211_ATTR_KEY_DEFAULT_TYPES, + /* add attributes here, update the policy in nl80211.c */ __NL80211_ATTR_AFTER_LAST, @@ -1774,6 +1780,23 @@ enum nl80211_wpa_versions { NL80211_WPA_VERSION_2 = 1 << 1, }; +/** + * enum nl80211_key_default_types - key default types + * @__NL80211_KEY_DEFAULT_TYPE_INVALID: invalid + * @NL80211_KEY_DEFAULT_TYPE_UNICAST: key should be used as default + * unicast key + * @NL80211_KEY_DEFAULT_TYPE_MULTICAST: key should be used as default + * multicast key + * @NUM_NL80211_KEY_DEFAULT_TYPES: number of default types + */ +enum nl80211_key_default_types { + __NL80211_KEY_DEFAULT_TYPE_INVALID, + NL80211_KEY_DEFAULT_TYPE_UNICAST, + NL80211_KEY_DEFAULT_TYPE_MULTICAST, + + NUM_NL80211_KEY_DEFAULT_TYPES +}; + /** * enum nl80211_key_attributes - key attributes * @__NL80211_KEY_INVALID: invalid @@ -1790,6 +1813,9 @@ enum nl80211_wpa_versions { * @NL80211_KEY_TYPE: the key type from enum nl80211_key_type, if not * specified the default depends on whether a MAC address was * given with the command using the key or not (u32) + * @NL80211_KEY_DEFAULT_TYPES: A nested attribute containing flags + * attributes, specifying what a key should be set as default as. + * See &enum nl80211_key_default_types. * @__NL80211_KEY_AFTER_LAST: internal * @NL80211_KEY_MAX: highest key attribute */ @@ -1802,6 +1828,7 @@ enum nl80211_key_attributes { NL80211_KEY_DEFAULT, NL80211_KEY_DEFAULT_MGMT, NL80211_KEY_TYPE, + NL80211_KEY_DEFAULT_TYPES, /* keep last */ __NL80211_KEY_AFTER_LAST, -- cgit v1.2.3 From 44316cb1e97a1e7f76eb3f07e5b0ba91d72e9693 Mon Sep 17 00:00:00 2001 From: Bing Zhao Date: Thu, 9 Dec 2010 18:24:41 -0800 Subject: ieee80211: add Parameter Set Count bitmask WMM IE QoS Info field lower 4 bits: Parameter Set Count Signed-off-by: Bing Zhao Signed-off-by: John W. Linville --- include/linux/ieee80211.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h index 351c0ab4e284..7f2354534242 100644 --- a/include/linux/ieee80211.h +++ b/include/linux/ieee80211.h @@ -122,6 +122,7 @@ /* U-APSD queue for WMM IEs sent by AP */ #define IEEE80211_WMM_IE_AP_QOSINFO_UAPSD (1<<7) +#define IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK 0x0f /* U-APSD queues for WMM IEs sent by STA */ #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VO (1<<0) -- cgit v1.2.3 From 96c8f06a0fb359a9a89701a7afab6d837e466ab0 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Mon, 13 Dec 2010 22:45:48 +0100 Subject: rtc: Namespace fixup rtctimer_* is already occupied by sound/core/rtctimer.c. Instead of fiddling with that, rename the new functions to rtc_timer_* which reads nicer anyway. Signed-off-by: Thomas Gleixner Cc: John Stultz --- include/linux/rtc.h | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/rtc.h b/include/linux/rtc.h index 44e18a2523a3..3c995b4d742c 100644 --- a/include/linux/rtc.h +++ b/include/linux/rtc.h @@ -246,13 +246,13 @@ int rtc_register(rtc_task_t *task); int rtc_unregister(rtc_task_t *task); int rtc_control(rtc_task_t *t, unsigned int cmd, unsigned long arg); -void rtctimer_enqueue(struct rtc_device *rtc, struct rtc_timer *timer); -void rtctimer_remove(struct rtc_device *rtc, struct rtc_timer *timer); -void rtctimer_init(struct rtc_timer *timer, void (*f)(void* p), void* data); -int rtctimer_start(struct rtc_device *rtc, struct rtc_timer* timer, +void rtc_timer_enqueue(struct rtc_device *rtc, struct rtc_timer *timer); +void rtc_timer_remove(struct rtc_device *rtc, struct rtc_timer *timer); +void rtc_timer_init(struct rtc_timer *timer, void (*f)(void* p), void* data); +int rtc_timer_start(struct rtc_device *rtc, struct rtc_timer* timer, ktime_t expires, ktime_t period); -int rtctimer_cancel(struct rtc_device *rtc, struct rtc_timer* timer); -void rtctimer_do_work(struct work_struct *work); +int rtc_timer_cancel(struct rtc_device *rtc, struct rtc_timer* timer); +void rtc_timer_do_work(struct work_struct *work); static inline bool is_leap_year(unsigned int year) { -- cgit v1.2.3 From 53dde5f385bc56e312f78b7cb25ffaf8efd4735d Mon Sep 17 00:00:00 2001 From: Suresh Siddha Date: Tue, 16 Nov 2010 13:23:50 -0800 Subject: bootmem: Add alloc_bootmem_align() Add an alloc_bootmem_align() interface to allocate bootmem with specified alignment. This is necessary to be able to allocate the xsave area in a subsequent patch. Signed-off-by: Suresh Siddha LKML-Reference: <20101116212441.977574826@sbsiddha-MOBL3.sc.intel.com> Acked-by: H. Peter Anvin Signed-off-by: H. Peter Anvin Cc: --- include/linux/bootmem.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/bootmem.h b/include/linux/bootmem.h index 266ab9291232..499dfe982a0e 100644 --- a/include/linux/bootmem.h +++ b/include/linux/bootmem.h @@ -105,6 +105,8 @@ extern void *__alloc_bootmem_low_node(pg_data_t *pgdat, #define alloc_bootmem(x) \ __alloc_bootmem(x, SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS)) +#define alloc_bootmem_align(x, align) \ + __alloc_bootmem(x, align, __pa(MAX_DMA_ADDRESS)) #define alloc_bootmem_nopanic(x) \ __alloc_bootmem_nopanic(x, SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS)) #define alloc_bootmem_pages(x) \ -- cgit v1.2.3 From c9aa308fd5c373faeda588cfb02b04f116904613 Mon Sep 17 00:00:00 2001 From: Huang Ying Date: Tue, 7 Dec 2010 10:22:29 +0800 Subject: Add CPER PCIe error section structure and constants definition On some machine, PCIe error is reported via APEI (ACPI Platform Error Interface). The error data is passed from firmware to Linux via CPER PCIe error section structure. This patch adds CPER PCIe error section structure and constants definition. Signed-off-by: Huang Ying Signed-off-by: Len Brown --- include/linux/cper.h | 86 +++++++++++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 82 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/cper.h b/include/linux/cper.h index bf972f81e2a7..3104aaff5dd0 100644 --- a/include/linux/cper.h +++ b/include/linux/cper.h @@ -39,10 +39,12 @@ * Severity difinition for error_severity in struct cper_record_header * and section_severity in struct cper_section_descriptor */ -#define CPER_SEV_RECOVERABLE 0x0 -#define CPER_SEV_FATAL 0x1 -#define CPER_SEV_CORRECTED 0x2 -#define CPER_SEV_INFORMATIONAL 0x3 +enum { + CPER_SEV_RECOVERABLE, + CPER_SEV_FATAL, + CPER_SEV_CORRECTED, + CPER_SEV_INFORMATIONAL, +}; /* * Validation bits difinition for validation_bits in struct @@ -201,6 +203,47 @@ UUID_LE(0x036F84E1, 0x7F37, 0x428c, 0xA7, 0x9E, 0x57, 0x5F, \ 0xDF, 0xAA, 0x84, 0xEC) +#define CPER_PROC_VALID_TYPE 0x0001 +#define CPER_PROC_VALID_ISA 0x0002 +#define CPER_PROC_VALID_ERROR_TYPE 0x0004 +#define CPER_PROC_VALID_OPERATION 0x0008 +#define CPER_PROC_VALID_FLAGS 0x0010 +#define CPER_PROC_VALID_LEVEL 0x0020 +#define CPER_PROC_VALID_VERSION 0x0040 +#define CPER_PROC_VALID_BRAND_INFO 0x0080 +#define CPER_PROC_VALID_ID 0x0100 +#define CPER_PROC_VALID_TARGET_ADDRESS 0x0200 +#define CPER_PROC_VALID_REQUESTOR_ID 0x0400 +#define CPER_PROC_VALID_RESPONDER_ID 0x0800 +#define CPER_PROC_VALID_IP 0x1000 + +#define CPER_MEM_VALID_ERROR_STATUS 0x0001 +#define CPER_MEM_VALID_PHYSICAL_ADDRESS 0x0002 +#define CPER_MEM_VALID_PHYSICAL_ADDRESS_MASK 0x0004 +#define CPER_MEM_VALID_NODE 0x0008 +#define CPER_MEM_VALID_CARD 0x0010 +#define CPER_MEM_VALID_MODULE 0x0020 +#define CPER_MEM_VALID_BANK 0x0040 +#define CPER_MEM_VALID_DEVICE 0x0080 +#define CPER_MEM_VALID_ROW 0x0100 +#define CPER_MEM_VALID_COLUMN 0x0200 +#define CPER_MEM_VALID_BIT_POSITION 0x0400 +#define CPER_MEM_VALID_REQUESTOR_ID 0x0800 +#define CPER_MEM_VALID_RESPONDER_ID 0x1000 +#define CPER_MEM_VALID_TARGET_ID 0x2000 +#define CPER_MEM_VALID_ERROR_TYPE 0x4000 + +#define CPER_PCIE_VALID_PORT_TYPE 0x0001 +#define CPER_PCIE_VALID_VERSION 0x0002 +#define CPER_PCIE_VALID_COMMAND_STATUS 0x0004 +#define CPER_PCIE_VALID_DEVICE_ID 0x0008 +#define CPER_PCIE_VALID_SERIAL_NUMBER 0x0010 +#define CPER_PCIE_VALID_BRIDGE_CONTROL_STATUS 0x0020 +#define CPER_PCIE_VALID_CAPABILITY 0x0040 +#define CPER_PCIE_VALID_AER_INFO 0x0080 + +#define CPER_PCIE_SLOT_SHIFT 3 + /* * All tables and structs must be byte-packed to match CPER * specification, since the tables are provided by the system BIOS @@ -306,6 +349,41 @@ struct cper_sec_mem_err { __u8 error_type; }; +struct cper_sec_pcie { + __u64 validation_bits; + __u32 port_type; + struct { + __u8 minor; + __u8 major; + __u8 reserved[2]; + } version; + __u16 command; + __u16 status; + __u32 reserved; + struct { + __u16 vendor_id; + __u16 device_id; + __u8 class_code[3]; + __u8 function; + __u8 device; + __u16 segment; + __u8 bus; + __u8 secondary_bus; + __u16 slot; + __u8 reserved; + } device_id; + struct { + __u32 lower; + __u32 upper; + } serial_number; + struct { + __u16 secondary_status; + __u16 control; + } bridge; + __u8 capability[60]; + __u8 aer_info[96]; +}; + /* Reset to default packing */ #pragma pack() -- cgit v1.2.3 From 16f4232ce4d6855361b4eb56262f4a202295c978 Mon Sep 17 00:00:00 2001 From: Zhao Yakui Date: Wed, 8 Dec 2010 10:10:16 +0800 Subject: IPMI: Add one interface to get more info of low-level IPMI device The IPMI smi_watcher will be used to catch the IPMI interface as they come or go. In order to communicate with the correct IPMI device, it should be confirmed whether it is what we wanted especially on the system with multiple IPMI devices. But the new_smi callback function of smi_watcher provides very limited info(only the interface number and dev pointer) and there is no detailed info about the low level interface. For example: which mechansim registers the IPMI interface(ACPI, PCI, DMI and so on). This is to add one interface that can get more info of low-level IPMI device. For example: the ACPI device handle will be returned for the pnp_acpi IPMI device. Signed-off-by: Zhao Yakui Signed-off-by: Corey Minyard Signed-off-by: Len Brown --- include/linux/ipmi.h | 38 ++++++++++++++++++++++++++++++++++++++ include/linux/ipmi_smi.h | 8 ++++++++ 2 files changed, 46 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ipmi.h b/include/linux/ipmi.h index 65aae34759de..045f2f275cd0 100644 --- a/include/linux/ipmi.h +++ b/include/linux/ipmi.h @@ -454,6 +454,44 @@ unsigned int ipmi_addr_length(int addr_type); /* Validate that the given IPMI address is valid. */ int ipmi_validate_addr(struct ipmi_addr *addr, int len); +/* + * How did the IPMI driver find out about the device? + */ +enum ipmi_addr_src { + SI_INVALID = 0, SI_HOTMOD, SI_HARDCODED, SI_SPMI, SI_ACPI, SI_SMBIOS, + SI_PCI, SI_DEVICETREE, SI_DEFAULT +}; + +union ipmi_smi_info_union { + /* + * the acpi_info element is defined for the SI_ACPI + * address type + */ + struct { + void *acpi_handle; + } acpi_info; +}; + +struct ipmi_smi_info { + enum ipmi_addr_src addr_src; + + /* + * Base device for the interface. Don't forget to put this when + * you are done. + */ + struct device *dev; + + /* + * The addr_info provides more detailed info for some IPMI + * devices, depending on the addr_src. Currently only SI_ACPI + * info is provided. + */ + union ipmi_smi_info_union addr_info; +}; + +/* This is to get the private info of ipmi_smi_t */ +extern int ipmi_get_smi_info(int if_num, struct ipmi_smi_info *data); + #endif /* __KERNEL__ */ diff --git a/include/linux/ipmi_smi.h b/include/linux/ipmi_smi.h index 4b48318ac542..906590aa6907 100644 --- a/include/linux/ipmi_smi.h +++ b/include/linux/ipmi_smi.h @@ -39,6 +39,7 @@ #include #include #include +#include /* This files describes the interface for IPMI system management interface drivers to bind into the IPMI message handler. */ @@ -86,6 +87,13 @@ struct ipmi_smi_handlers { int (*start_processing)(void *send_info, ipmi_smi_t new_intf); + /* + * Get the detailed private info of the low level interface and store + * it into the structure of ipmi_smi_data. For example: the + * ACPI device handle will be returned for the pnp_acpi IPMI device. + */ + int (*get_smi_info)(void *send_info, struct ipmi_smi_info *data); + /* Called to enqueue an SMI message to be sent. This operation is not allowed to fail. If an error occurs, it should report back the error in a received message. It may -- cgit v1.2.3 From ba9effa2ecdc08325bd297d541b4207b2df38184 Mon Sep 17 00:00:00 2001 From: "Kirill A. Shutemov" Date: Mon, 13 Dec 2010 19:10:29 +0200 Subject: kbuild: export linux/{a.out,kvm,kvm_para}.h on headers_install_all Export linux/a.out.h, linux/kvm.h and linux/kvm_para.h on headers_install_all if at least one architecture has appropriate files in arch-dependent headers. Signed-off-by: Kirill A. Shutemov Signed-off-by: Michal Marek --- include/linux/Kbuild | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/Kbuild b/include/linux/Kbuild index 97319a8fc1e0..ae31f9521a6d 100644 --- a/include/linux/Kbuild +++ b/include/linux/Kbuild @@ -20,15 +20,18 @@ header-y += wimax/ objhdr-y += version.h ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/include/asm/a.out.h \ - $(srctree)/include/asm-$(SRCARCH)/a.out.h),) + $(srctree)/include/asm-$(SRCARCH)/a.out.h \ + $(INSTALL_HDR_PATH)/include/asm-*/a.out.h),) header-y += a.out.h endif ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/include/asm/kvm.h \ - $(srctree)/include/asm-$(SRCARCH)/kvm.h),) + $(srctree)/include/asm-$(SRCARCH)/kvm.h \ + $(INSTALL_HDR_PATH)/include/asm-*/kvm.h),) header-y += kvm.h endif ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/include/asm/kvm_para.h \ - $(srctree)/include/asm-$(SRCARCH)/kvm_para.h),) + $(srctree)/include/asm-$(SRCARCH)/kvm_para.h \ + $(INSTALL_HDR_PATH)/include/asm-*/kvm_para.h),) header-y += kvm_para.h endif -- cgit v1.2.3 From ab4e0192196b8d4e43a3945742d4996da934a86f Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Tue, 14 Dec 2010 23:53:21 -0800 Subject: Input: define separate EVIOCGKEYCODE_V2/EVIOCSKEYCODE_V2 The desire to keep old names for the EVIOCGKEYCODE/EVIOCSKEYCODE while extending them to support large scancodes was a mistake. While we tried to keep ABI intact (and we succeeded in doing that, programs compiled on older kernels will work on newer ones) there is still a problem with recompiling existing software with newer kernel headers. New kernel headers will supply updated ioctl numbers and kernel will expect that userspace will use struct input_keymap_entry to set and retrieve keymap data. But since the names of ioctls are still the same userspace will happily compile even if not adjusted to make use of the new structure and will start miraculously fail in the field. To avoid this issue let's revert EVIOCGKEYCODE/EVIOCSKEYCODE definitions and add EVIOCGKEYCODE_V2/EVIOCSKEYCODE_V2 so that userspace can explicitly select the style of ioctls it wants to employ. Reviewed-by: Henrik Rydberg Acked-by: Jarod Wilson Acked-by: Mauro Carvalho Chehab Signed-off-by: Dmitry Torokhov --- include/linux/input.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/input.h b/include/linux/input.h index a8af21d42bc1..9777668883be 100644 --- a/include/linux/input.h +++ b/include/linux/input.h @@ -104,8 +104,10 @@ struct input_keymap_entry { #define EVIOCGREP _IOR('E', 0x03, unsigned int[2]) /* get repeat settings */ #define EVIOCSREP _IOW('E', 0x03, unsigned int[2]) /* set repeat settings */ -#define EVIOCGKEYCODE _IOR('E', 0x04, struct input_keymap_entry) /* get keycode */ -#define EVIOCSKEYCODE _IOW('E', 0x04, struct input_keymap_entry) /* set keycode */ +#define EVIOCGKEYCODE _IOR('E', 0x04, unsigned int[2]) /* get keycode */ +#define EVIOCGKEYCODE_V2 _IOR('E', 0x04, struct input_keymap_entry) +#define EVIOCSKEYCODE _IOW('E', 0x04, unsigned int[2]) /* set keycode */ +#define EVIOCSKEYCODE_V2 _IOW('E', 0x04, struct input_keymap_entry) #define EVIOCGNAME(len) _IOC(_IOC_READ, 'E', 0x06, len) /* get device name */ #define EVIOCGPHYS(len) _IOC(_IOC_READ, 'E', 0x07, len) /* get physical location */ -- cgit v1.2.3 From ed41390fa57a21d06e6e3a3c4bc238bab8957fbb Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 14 Dec 2010 16:23:10 +0100 Subject: workqueue: deprecate cancel_rearming_delayed_work[queue]() There's no in-kernel user left for these two obsolete functions. Mark them deprecated and schedule for removal during 2.6.39 cycle. Signed-off-by: Tejun Heo Acked-by: David S. Miller --- include/linux/workqueue.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/workqueue.h b/include/linux/workqueue.h index 0c0771f06bfa..6b5193d70268 100644 --- a/include/linux/workqueue.h +++ b/include/linux/workqueue.h @@ -401,7 +401,7 @@ static inline bool __cancel_delayed_work(struct delayed_work *work) } /* Obsolete. use cancel_delayed_work_sync() */ -static inline +static inline __deprecated void cancel_rearming_delayed_workqueue(struct workqueue_struct *wq, struct delayed_work *work) { @@ -409,7 +409,7 @@ void cancel_rearming_delayed_workqueue(struct workqueue_struct *wq, } /* Obsolete. use cancel_delayed_work_sync() */ -static inline +static inline __deprecated void cancel_rearming_delayed_work(struct delayed_work *work) { cancel_delayed_work_sync(work); -- cgit v1.2.3 From 62731fa0c893515dc6cbc3e0a2879a92793c735f Mon Sep 17 00:00:00 2001 From: Alexey Zaytsev Date: Mon, 22 Nov 2010 00:33:03 +0000 Subject: fanotify: split version into version and metadata_len To implement per event type optional headers we are interested in knowing how long the metadata structure is. This patch slits the __u32 version field into a __u8 version and a __u16 metadata_len field (with __u8 left over). This should allow for backwards compat ABI. Signed-off-by: Alexey Zaytsev [rewrote descrtion and changed object sizes and ordering - eparis] Signed-off-by: Eric Paris --- include/linux/fanotify.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/fanotify.h b/include/linux/fanotify.h index c73224315aee..6c6133f76e16 100644 --- a/include/linux/fanotify.h +++ b/include/linux/fanotify.h @@ -83,11 +83,13 @@ FAN_ALL_PERM_EVENTS |\ FAN_Q_OVERFLOW) -#define FANOTIFY_METADATA_VERSION 2 +#define FANOTIFY_METADATA_VERSION 3 struct fanotify_event_metadata { __u32 event_len; - __u32 vers; + __u8 vers; + __u8 reserved; + __u16 metadata_len; __aligned_u64 mask; __s32 fd; __s32 pid; -- cgit v1.2.3 From f1c722295e029eace7960fc687efd5afd67dc555 Mon Sep 17 00:00:00 2001 From: Jan Engelhardt Date: Wed, 15 Dec 2010 22:58:53 +0100 Subject: netfilter: xtables: use guarded types We are supposed to use the kernel's own types in userspace exports. Signed-off-by: Jan Engelhardt Signed-off-by: Patrick McHardy --- include/linux/netfilter/xt_CT.h | 10 +++++----- include/linux/netfilter/xt_TCPOPTSTRIP.h | 2 +- include/linux/netfilter/xt_TPROXY.h | 8 ++++---- include/linux/netfilter/xt_cluster.h | 8 ++++---- include/linux/netfilter/xt_quota.h | 6 +++--- include/linux/netfilter/xt_time.h | 14 +++++++------- include/linux/netfilter/xt_u32.h | 16 ++++++++-------- 7 files changed, 32 insertions(+), 32 deletions(-) (limited to 'include/linux') diff --git a/include/linux/netfilter/xt_CT.h b/include/linux/netfilter/xt_CT.h index 1b564106891d..fbf4c5658554 100644 --- a/include/linux/netfilter/xt_CT.h +++ b/include/linux/netfilter/xt_CT.h @@ -4,11 +4,11 @@ #define XT_CT_NOTRACK 0x1 struct xt_ct_target_info { - u_int16_t flags; - u_int16_t zone; - u_int32_t ct_events; - u_int32_t exp_events; - char helper[16]; + __u16 flags; + __u16 zone; + __u32 ct_events; + __u32 exp_events; + char helper[16]; /* Used internally by the kernel */ struct nf_conn *ct __attribute__((aligned(8))); diff --git a/include/linux/netfilter/xt_TCPOPTSTRIP.h b/include/linux/netfilter/xt_TCPOPTSTRIP.h index 2db543214ff5..342ef14b1761 100644 --- a/include/linux/netfilter/xt_TCPOPTSTRIP.h +++ b/include/linux/netfilter/xt_TCPOPTSTRIP.h @@ -7,7 +7,7 @@ (((1U << (idx & 31)) & bmap[(idx) >> 5]) != 0) struct xt_tcpoptstrip_target_info { - u_int32_t strip_bmap[8]; + __u32 strip_bmap[8]; }; #endif /* _XT_TCPOPTSTRIP_H */ diff --git a/include/linux/netfilter/xt_TPROXY.h b/include/linux/netfilter/xt_TPROXY.h index 3f3d69361289..8097e0b4c15e 100644 --- a/include/linux/netfilter/xt_TPROXY.h +++ b/include/linux/netfilter/xt_TPROXY.h @@ -5,15 +5,15 @@ * redirection. We can get rid of that whenever we get support for * mutliple targets in the same rule. */ struct xt_tproxy_target_info { - u_int32_t mark_mask; - u_int32_t mark_value; + __u32 mark_mask; + __u32 mark_value; __be32 laddr; __be16 lport; }; struct xt_tproxy_target_info_v1 { - u_int32_t mark_mask; - u_int32_t mark_value; + __u32 mark_mask; + __u32 mark_value; union nf_inet_addr laddr; __be16 lport; }; diff --git a/include/linux/netfilter/xt_cluster.h b/include/linux/netfilter/xt_cluster.h index 886682656f09..66cfa3c782ac 100644 --- a/include/linux/netfilter/xt_cluster.h +++ b/include/linux/netfilter/xt_cluster.h @@ -6,10 +6,10 @@ enum xt_cluster_flags { }; struct xt_cluster_match_info { - u_int32_t total_nodes; - u_int32_t node_mask; - u_int32_t hash_seed; - u_int32_t flags; + __u32 total_nodes; + __u32 node_mask; + __u32 hash_seed; + __u32 flags; }; #define XT_CLUSTER_NODES_MAX 32 diff --git a/include/linux/netfilter/xt_quota.h b/include/linux/netfilter/xt_quota.h index b0d28c659ab7..8bda65f0bc92 100644 --- a/include/linux/netfilter/xt_quota.h +++ b/include/linux/netfilter/xt_quota.h @@ -9,9 +9,9 @@ enum xt_quota_flags { struct xt_quota_priv; struct xt_quota_info { - u_int32_t flags; - u_int32_t pad; - aligned_u64 quota; + __u32 flags; + __u32 pad; + aligned_u64 quota; /* Used internally by the kernel */ struct xt_quota_priv *master; diff --git a/include/linux/netfilter/xt_time.h b/include/linux/netfilter/xt_time.h index 14b6df412c9f..b8bd4568efdb 100644 --- a/include/linux/netfilter/xt_time.h +++ b/include/linux/netfilter/xt_time.h @@ -2,13 +2,13 @@ #define _XT_TIME_H 1 struct xt_time_info { - u_int32_t date_start; - u_int32_t date_stop; - u_int32_t daytime_start; - u_int32_t daytime_stop; - u_int32_t monthdays_match; - u_int8_t weekdays_match; - u_int8_t flags; + __u32 date_start; + __u32 date_stop; + __u32 daytime_start; + __u32 daytime_stop; + __u32 monthdays_match; + __u8 weekdays_match; + __u8 flags; }; enum { diff --git a/include/linux/netfilter/xt_u32.h b/include/linux/netfilter/xt_u32.h index 9947f56cdbdd..e8c3d8722bae 100644 --- a/include/linux/netfilter/xt_u32.h +++ b/include/linux/netfilter/xt_u32.h @@ -9,13 +9,13 @@ enum xt_u32_ops { }; struct xt_u32_location_element { - u_int32_t number; - u_int8_t nextop; + __u32 number; + __u8 nextop; }; struct xt_u32_value_element { - u_int32_t min; - u_int32_t max; + __u32 min; + __u32 max; }; /* @@ -27,14 +27,14 @@ struct xt_u32_value_element { struct xt_u32_test { struct xt_u32_location_element location[XT_U32_MAXSIZE+1]; struct xt_u32_value_element value[XT_U32_MAXSIZE+1]; - u_int8_t nnums; - u_int8_t nvalues; + __u8 nnums; + __u8 nvalues; }; struct xt_u32 { struct xt_u32_test tests[XT_U32_MAXSIZE+1]; - u_int8_t ntests; - u_int8_t invert; + __u8 ntests; + __u8 invert; }; #endif /* _XT_U32_H */ -- cgit v1.2.3 From a293911d4fd5e8593dbf478399a77f990d466269 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Tue, 14 Dec 2010 17:54:28 +0100 Subject: nl80211: advertise maximum remain-on-channel duration With the upcoming hardware offload implementation, some devices will have a different maximum duration for the remain-on-channel command. Advertise the maximum duration in mac80211, and make mac80211 set it. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- include/linux/nl80211.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index b8fa25d741ba..1cee56b3a79a 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -773,6 +773,9 @@ enum nl80211_commands { * cache, a wiphy attribute. * * @NL80211_ATTR_DURATION: Duration of an operation in milliseconds, u32. + * @NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION: Device attribute that + * specifies the maximum duration that can be requested with the + * remain-on-channel operation, in milliseconds, u32. * * @NL80211_ATTR_COOKIE: Generic 64-bit cookie to identify objects. * @@ -1035,6 +1038,8 @@ enum nl80211_attrs { NL80211_ATTR_KEY_DEFAULT_TYPES, + NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION, + /* add attributes here, update the policy in nl80211.c */ __NL80211_ATTR_AFTER_LAST, -- cgit v1.2.3 From ae90bdeaeac6b964b7a1e853a90a19f358a9ac20 Mon Sep 17 00:00:00 2001 From: KOVACS Krisztian Date: Wed, 15 Dec 2010 23:53:41 +0100 Subject: netfilter: fix compilation when conntrack is disabled but tproxy is enabled The IPv6 tproxy patches split IPv6 defragmentation off of conntrack, but failed to update the #ifdef stanzas guarding the defragmentation related fields and code in skbuff and conntrack related code in nf_defrag_ipv6.c. This patch adds the required #ifdefs so that IPv6 tproxy can truly be used without connection tracking. Original report: http://marc.info/?l=linux-netdev&m=129010118516341&w=2 Reported-by: Randy Dunlap Signed-off-by: KOVACS Krisztian Acked-by: Randy Dunlap Signed-off-by: Patrick McHardy --- include/linux/skbuff.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'include/linux') diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index e6ba898de61c..4f2db79a2abb 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -255,6 +255,11 @@ typedef unsigned int sk_buff_data_t; typedef unsigned char *sk_buff_data_t; #endif +#if defined(CONFIG_NF_DEFRAG_IPV4) || defined(CONFIG_NF_DEFRAG_IPV4_MODULE) || \ + defined(CONFIG_NF_DEFRAG_IPV6) || defined(CONFIG_NF_DEFRAG_IPV6_MODULE) +#define NET_SKBUFF_NF_DEFRAG_NEEDED 1 +#endif + /** * struct sk_buff - socket buffer * @next: Next buffer in list @@ -362,6 +367,8 @@ struct sk_buff { void (*destructor)(struct sk_buff *skb); #if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE) struct nf_conntrack *nfct; +#endif +#ifdef NET_SKBUFF_NF_DEFRAG_NEEDED struct sk_buff *nfct_reasm; #endif #ifdef CONFIG_BRIDGE_NETFILTER @@ -2051,6 +2058,8 @@ static inline void nf_conntrack_get(struct nf_conntrack *nfct) if (nfct) atomic_inc(&nfct->use); } +#endif +#ifdef NET_SKBUFF_NF_DEFRAG_NEEDED static inline void nf_conntrack_get_reasm(struct sk_buff *skb) { if (skb) @@ -2079,6 +2088,8 @@ static inline void nf_reset(struct sk_buff *skb) #if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE) nf_conntrack_put(skb->nfct); skb->nfct = NULL; +#endif +#ifdef NET_SKBUFF_NF_DEFRAG_NEEDED nf_conntrack_put_reasm(skb->nfct_reasm); skb->nfct_reasm = NULL; #endif @@ -2095,6 +2106,8 @@ static inline void __nf_copy(struct sk_buff *dst, const struct sk_buff *src) dst->nfct = src->nfct; nf_conntrack_get(src->nfct); dst->nfctinfo = src->nfctinfo; +#endif +#ifdef NET_SKBUFF_NF_DEFRAG_NEEDED dst->nfct_reasm = src->nfct_reasm; nf_conntrack_get_reasm(src->nfct_reasm); #endif @@ -2108,6 +2121,8 @@ static inline void nf_copy(struct sk_buff *dst, const struct sk_buff *src) { #if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE) nf_conntrack_put(dst->nfct); +#endif +#ifdef NET_SKBUFF_NF_DEFRAG_NEEDED nf_conntrack_put_reasm(dst->nfct_reasm); #endif #ifdef CONFIG_BRIDGE_NETFILTER -- cgit v1.2.3 From 47c78e891323513e9909729b44033e2c6649e2b7 Mon Sep 17 00:00:00 2001 From: Henrik Rydberg Date: Sat, 27 Nov 2010 09:16:48 +0100 Subject: input: mt: Break out slots handling In preparation for common code to handle a larger set of MT slots devices, move the slots handling over to a separate file. Signed-off-by: Henrik Rydberg --- include/linux/input.h | 16 ---------------- include/linux/input/mt.h | 44 ++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 44 insertions(+), 16 deletions(-) create mode 100644 include/linux/input/mt.h (limited to 'include/linux') diff --git a/include/linux/input.h b/include/linux/input.h index 51af441f3a21..99e2a52c0509 100644 --- a/include/linux/input.h +++ b/include/linux/input.h @@ -1082,14 +1082,6 @@ struct ff_effect { #include #include -/** - * struct input_mt_slot - represents the state of an input MT slot - * @abs: holds current values of ABS_MT axes for this slot - */ -struct input_mt_slot { - int abs[ABS_MT_LAST - ABS_MT_FIRST + 1]; -}; - /** * struct input_dev - represents an input device * @name: name of the device @@ -1461,11 +1453,6 @@ static inline void input_mt_sync(struct input_dev *dev) input_event(dev, EV_SYN, SYN_MT_REPORT, 0); } -static inline void input_mt_slot(struct input_dev *dev, int slot) -{ - input_event(dev, EV_ABS, ABS_MT_SLOT, slot); -} - void input_set_capability(struct input_dev *dev, unsigned int type, unsigned int code); /** @@ -1578,8 +1565,5 @@ int input_ff_erase(struct input_dev *dev, int effect_id, struct file *file); int input_ff_create_memless(struct input_dev *dev, void *data, int (*play_effect)(struct input_dev *, void *, struct ff_effect *)); -int input_mt_create_slots(struct input_dev *dev, unsigned int num_slots); -void input_mt_destroy_slots(struct input_dev *dev); - #endif #endif diff --git a/include/linux/input/mt.h b/include/linux/input/mt.h new file mode 100644 index 000000000000..4f5e9d0e2eae --- /dev/null +++ b/include/linux/input/mt.h @@ -0,0 +1,44 @@ +#ifndef _INPUT_MT_H +#define _INPUT_MT_H + +/* + * Input Multitouch Library + * + * Copyright (c) 2010 Henrik Rydberg + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + */ + +#include + +/** + * struct input_mt_slot - represents the state of an input MT slot + * @abs: holds current values of ABS_MT axes for this slot + */ +struct input_mt_slot { + int abs[ABS_MT_LAST - ABS_MT_FIRST + 1]; +}; + +static inline void input_mt_set_value(struct input_mt_slot *slot, + unsigned code, int value) +{ + slot->abs[code - ABS_MT_FIRST] = value; +} + +static inline int input_mt_get_value(const struct input_mt_slot *slot, + unsigned code) +{ + return slot->abs[code - ABS_MT_FIRST]; +} + +int input_mt_create_slots(struct input_dev *dev, unsigned int num_slots); +void input_mt_destroy_slots(struct input_dev *dev); + +static inline void input_mt_slot(struct input_dev *dev, int slot) +{ + input_event(dev, EV_ABS, ABS_MT_SLOT, slot); +} + +#endif -- cgit v1.2.3 From 8cde81001626c4c60b26ef2eb5fc522885ed9fd0 Mon Sep 17 00:00:00 2001 From: Henrik Rydberg Date: Sat, 27 Nov 2010 10:50:54 +0100 Subject: input: mt: Collect slots initialization code The MT slots devices all follow the same initialization pattern of creating slots and hinting about buffer size. Let drivers call an initialization function instead, and make sure it can be called repeatedly without side effects. Signed-off-by: Henrik Rydberg --- include/linux/input/mt.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/input/mt.h b/include/linux/input/mt.h index 4f5e9d0e2eae..d7f6518e3222 100644 --- a/include/linux/input/mt.h +++ b/include/linux/input/mt.h @@ -33,7 +33,7 @@ static inline int input_mt_get_value(const struct input_mt_slot *slot, return slot->abs[code - ABS_MT_FIRST]; } -int input_mt_create_slots(struct input_dev *dev, unsigned int num_slots); +int input_mt_init_slots(struct input_dev *dev, unsigned int num_slots); void input_mt_destroy_slots(struct input_dev *dev); static inline void input_mt_slot(struct input_dev *dev, int slot) -- cgit v1.2.3 From c5f4dec1ceb6ab773bbbefbe64a7c990c7d6b17f Mon Sep 17 00:00:00 2001 From: Henrik Rydberg Date: Wed, 15 Dec 2010 13:50:34 +0100 Subject: input: mt: Move tracking and pointer emulation to input-mt The drivers using the type B protocol all report tracking information the same way. The contact id is semantically equivalent to ABS_MT_SLOT, and the handling of ABS_MT_TRACKING_ID only complicates the driver. The situation can be improved upon by providing a common pointer emulation code, thereby removing the need for the tracking id in the driver. This patch moves all tracking event handling over to the input core, simplifying both the existing drivers and the ones currently in preparation. Acked-by: Ping Cheng Acked-by: Jiri Kosina Signed-off-by: Henrik Rydberg --- include/linux/input.h | 3 +++ include/linux/input/mt.h | 13 +++++++++++++ 2 files changed, 16 insertions(+) (limited to 'include/linux') diff --git a/include/linux/input.h b/include/linux/input.h index 99e2a52c0509..6de145df4c1c 100644 --- a/include/linux/input.h +++ b/include/linux/input.h @@ -848,6 +848,7 @@ struct input_keymap_entry { */ #define MT_TOOL_FINGER 0 #define MT_TOOL_PEN 1 +#define MT_TOOL_MAX 1 /* * Values describing the status of a force-feedback effect @@ -1122,6 +1123,7 @@ struct ff_effect { * of tracked contacts * @mtsize: number of MT slots the device uses * @slot: MT slot currently being transmitted + * @trkid: stores MT tracking ID for the current contact * @absinfo: array of &struct absinfo elements holding information * about absolute axes (current value, min, max, flat, fuzz, * resolution) @@ -1206,6 +1208,7 @@ struct input_dev { struct input_mt_slot *mt; int mtsize; int slot; + int trkid; struct input_absinfo *absinfo; diff --git a/include/linux/input/mt.h b/include/linux/input/mt.h index d7f6518e3222..b3ac06a4435d 100644 --- a/include/linux/input/mt.h +++ b/include/linux/input/mt.h @@ -13,6 +13,8 @@ #include +#define TRKID_MAX 0xffff + /** * struct input_mt_slot - represents the state of an input MT slot * @abs: holds current values of ABS_MT axes for this slot @@ -36,9 +38,20 @@ static inline int input_mt_get_value(const struct input_mt_slot *slot, int input_mt_init_slots(struct input_dev *dev, unsigned int num_slots); void input_mt_destroy_slots(struct input_dev *dev); +static inline int input_mt_new_trkid(struct input_dev *dev) +{ + return dev->trkid++ & TRKID_MAX; +} + static inline void input_mt_slot(struct input_dev *dev, int slot) { input_event(dev, EV_ABS, ABS_MT_SLOT, slot); } +void input_mt_report_slot_state(struct input_dev *dev, + unsigned int tool_type, bool active); + +void input_mt_report_finger_count(struct input_dev *dev, int count); +void input_mt_report_pointer_emulation(struct input_dev *dev, bool use_count); + #endif -- cgit v1.2.3 From e42a98b520bb22535687ead3120e80edc268279a Mon Sep 17 00:00:00 2001 From: Henrik Rydberg Date: Mon, 6 Dec 2010 10:05:43 +0100 Subject: input: mt: Add hovering distance axis Touch devices capable of hovering, i.e., fingers detected a distance from the surface, are not supported by the current input MT protocol. This patch adds ABS_MT_DISTANCE, which may be used to indicate the distance between the contact and the surface. Signed-off-by: Henrik Rydberg --- include/linux/input.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/input.h b/include/linux/input.h index 6de145df4c1c..b3a1e02080c0 100644 --- a/include/linux/input.h +++ b/include/linux/input.h @@ -733,11 +733,12 @@ struct input_keymap_entry { #define ABS_MT_BLOB_ID 0x38 /* Group a set of packets as a blob */ #define ABS_MT_TRACKING_ID 0x39 /* Unique ID of initiated contact */ #define ABS_MT_PRESSURE 0x3a /* Pressure on contact area */ +#define ABS_MT_DISTANCE 0x3b /* Contact hover distance */ #ifdef __KERNEL__ /* Implementation details, userspace should not care about these */ #define ABS_MT_FIRST ABS_MT_TOUCH_MAJOR -#define ABS_MT_LAST ABS_MT_PRESSURE +#define ABS_MT_LAST ABS_MT_DISTANCE #endif #define ABS_MAX 0x3f -- cgit v1.2.3 From 2e80a82a49c4c7eca4e35734380f28298ba5db19 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Wed, 17 Nov 2010 23:17:36 +0100 Subject: perf: Dynamic pmu types Extend the perf_pmu_register() interface to allow for named and dynamic pmu types. Because we need to support the existing static types we cannot use dynamic types for everything, hence provide a type argument. If we want to enumerate the PMUs they need a name, provide one. Signed-off-by: Peter Zijlstra LKML-Reference: <20101117222056.259707703@chello.nl> Signed-off-by: Ingo Molnar --- include/linux/perf_event.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index 30e50e2c7f30..21206d27466b 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -588,6 +588,9 @@ struct perf_event; struct pmu { struct list_head entry; + char *name; + int type; + int * __percpu pmu_disable_count; struct perf_cpu_context * __percpu pmu_cpu_context; int task_ctx_nr; @@ -916,7 +919,7 @@ struct perf_output_handle { #ifdef CONFIG_PERF_EVENTS -extern int perf_pmu_register(struct pmu *pmu); +extern int perf_pmu_register(struct pmu *pmu, char *name, int type); extern void perf_pmu_unregister(struct pmu *pmu); extern int perf_num_counters(void); -- cgit v1.2.3 From abe43400579d5de0078c2d3a760e6598e183f871 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Wed, 17 Nov 2010 23:17:37 +0100 Subject: perf: Sysfs enumeration Simple sysfs emumeration of the PMUs. Use a "event_source" bus, and add PMU devices using their name. Each PMU device has a type attribute which contrains the value needed for perf_event_attr::type to identify this PMU. This is the minimal stub needed to start using this interface, we'll consider extending the sysfs usage later. Cc: Kay Sievers Cc: Greg KH Signed-off-by: Peter Zijlstra LKML-Reference: <20101117222056.316982569@chello.nl> Signed-off-by: Ingo Molnar --- include/linux/perf_event.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index 21206d27466b..dda5b0a3ff60 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -588,6 +588,7 @@ struct perf_event; struct pmu { struct list_head entry; + struct device *dev; char *name; int type; -- cgit v1.2.3 From f08f5a0add20834d3f3d876dfe08005a5df656db Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Thu, 16 Dec 2010 17:11:58 +0100 Subject: PM / Runtime: Fix pm_runtime_suspended() There are some situations (e.g. in __pm_generic_call()), where pm_runtime_suspended() is used to decide whether or not to execute a device's (system) ->suspend() callback. The callback is not executed if pm_runtime_suspended() returns true, but it does so for devices that don't even support runtime PM, because the power.disable_depth device field is ignored by it. This leads to problems (i.e. devices are not suspened when they should), so rework pm_runtime_suspended() so that it returns false if the device's power.disable_depth field is different from zero. Signed-off-by: Rafael J. Wysocki Cc: stable@kernel.org --- include/linux/pm_runtime.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h index 3ec2358f8692..d19f1cca7f74 100644 --- a/include/linux/pm_runtime.h +++ b/include/linux/pm_runtime.h @@ -77,7 +77,8 @@ static inline void device_set_run_wake(struct device *dev, bool enable) static inline bool pm_runtime_suspended(struct device *dev) { - return dev->power.runtime_status == RPM_SUSPENDED; + return dev->power.runtime_status == RPM_SUSPENDED + && !dev->power.disable_depth; } static inline void pm_runtime_mark_last_busy(struct device *dev) -- cgit v1.2.3 From dddd9dc340ae1a41d90e084529ca979c77c4ecfe Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 8 Dec 2010 20:57:35 +0100 Subject: block: kill genhd_media_change_notify() There's no user of the facility. Kill it. Signed-off-by: Tejun Heo Signed-off-by: Jens Axboe --- include/linux/genhd.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/genhd.h b/include/linux/genhd.h index 7a7b9c1644e4..5e4e6928387c 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -173,7 +173,6 @@ struct gendisk { struct timer_rand_state *random; atomic_t sync_io; /* RAID */ - struct work_struct async_notify; #ifdef CONFIG_BLK_DEV_INTEGRITY struct blk_integrity *integrity; #endif -- cgit v1.2.3 From d2bf1b6723ed0eab378363649d15b7893bf14e91 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 8 Dec 2010 20:57:36 +0100 Subject: block: move register_disk() and del_gendisk() to block/genhd.c There's no reason for register_disk() and del_gendisk() to be in fs/partitions/check.c. Move both to genhd.c. While at it, collapse unlink_gendisk(), which was artificially in a separate function due to genhd.c / check.c split, into del_gendisk(). Signed-off-by: Tejun Heo Signed-off-by: Jens Axboe --- include/linux/blkdev.h | 1 - include/linux/genhd.h | 1 - 2 files changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index aae86fd10c4f..83031bcf8366 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -643,7 +643,6 @@ static inline void rq_flush_dcache_pages(struct request *rq) extern int blk_register_queue(struct gendisk *disk); extern void blk_unregister_queue(struct gendisk *disk); -extern void register_disk(struct gendisk *dev); extern void generic_make_request(struct bio *bio); extern void blk_rq_init(struct request_queue *q, struct request *rq); extern void blk_put_request(struct request *); diff --git a/include/linux/genhd.h b/include/linux/genhd.h index 5e4e6928387c..56e17ed24816 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -394,7 +394,6 @@ extern void part_round_stats(int cpu, struct hd_struct *part); /* block/genhd.c */ extern void add_disk(struct gendisk *disk); extern void del_gendisk(struct gendisk *gp); -extern void unlink_gendisk(struct gendisk *gp); extern struct gendisk *get_gendisk(dev_t dev, int *partno); extern struct block_device *bdget_disk(struct gendisk *disk, int partno); -- cgit v1.2.3 From 77ea887e433ad8389d416826936c110fa7910f80 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 8 Dec 2010 20:57:37 +0100 Subject: implement in-kernel gendisk events handling Currently, media presence polling for removeable block devices is done from userland. There are several issues with this. * Polling is done by periodically opening the device. For SCSI devices, the command sequence generated by such action involves a few different commands including TEST_UNIT_READY. This behavior, while perfectly legal, is different from Windows which only issues single command, GET_EVENT_STATUS_NOTIFICATION. Unfortunately, some ATAPI devices lock up after being periodically queried such command sequences. * There is no reliable and unintrusive way for a userland program to tell whether the target device is safe for media presence polling. For example, polling for media presence during an on-going burning session can make it fail. The polling program can avoid this by opening the device with O_EXCL but then it risks making a valid exclusive user of the device fail w/ -EBUSY. * Userland polling is unnecessarily heavy and in-kernel implementation is lighter and better coordinated (workqueue, timer slack). This patch implements framework for in-kernel disk event handling, which includes media presence polling. * bdops->check_events() is added, which supercedes ->media_changed(). It should check whether there's any pending event and return if so. Currently, two events are defined - DISK_EVENT_MEDIA_CHANGE and DISK_EVENT_EJECT_REQUEST. ->check_events() is guaranteed not to be called parallelly. * gendisk->events and ->async_events are added. These should be initialized by block driver before passing the device to add_disk(). The former contains the mask of all supported events and the latter the mask of all events which the device can report without polling. /sys/block/*/events[_async] export these to userland. * Kernel parameter block.events_dfl_poll_msecs controls the system polling interval (default is 0 which means disable) and /sys/block/*/events_poll_msecs control polling intervals for individual devices (default is -1 meaning use system setting). Note that if a device can report all supported events asynchronously and its polling interval isn't explicitly set, the device won't be polled regardless of the system polling interval. * If a device is opened exclusively with write access, event checking is automatically disabled until all write exclusive accesses are released. * There are event 'clearing' events. For example, both of currently defined events are cleared after the device has been successfully opened. This information is passed to ->check_events() callback using @clearing argument as a hint. * Event checking is always performed from system_nrt_wq and timer slack is set to 25% for polling. * Nothing changes for drivers which implement ->media_changed() but not ->check_events(). Going forward, all drivers will be converted to ->check_events() and ->media_change() will be dropped. Signed-off-by: Tejun Heo Cc: Kay Sievers Cc: Jan Kara Signed-off-by: Jens Axboe --- include/linux/blkdev.h | 3 +++ include/linux/fs.h | 1 + include/linux/genhd.h | 18 +++++++++++++++++- 3 files changed, 21 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 83031bcf8366..05667e6989f1 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -1251,6 +1251,9 @@ struct block_device_operations { int (*compat_ioctl) (struct block_device *, fmode_t, unsigned, unsigned long); int (*direct_access) (struct block_device *, sector_t, void **, unsigned long *); + unsigned int (*check_events) (struct gendisk *disk, + unsigned int clearing); + /* ->media_changed() is DEPRECATED, use ->check_events() instead */ int (*media_changed) (struct gendisk *); void (*unlock_native_capacity) (struct gendisk *); int (*revalidate_disk) (struct gendisk *); diff --git a/include/linux/fs.h b/include/linux/fs.h index f48501563917..997d22efdef0 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -662,6 +662,7 @@ struct block_device { void * bd_claiming; void * bd_holder; int bd_holders; + bool bd_write_holder; #ifdef CONFIG_SYSFS struct gendisk * bd_holder_disk; /* for sysfs slave linkng */ #endif diff --git a/include/linux/genhd.h b/include/linux/genhd.h index 56e17ed24816..13893aa2ac9d 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -127,6 +127,11 @@ struct hd_struct { #define GENHD_FL_EXT_DEVT 64 /* allow extended devt */ #define GENHD_FL_NATIVE_CAPACITY 128 +enum { + DISK_EVENT_MEDIA_CHANGE = 1 << 0, /* media changed */ + DISK_EVENT_EJECT_REQUEST = 1 << 1, /* eject requested */ +}; + #define BLK_SCSI_MAX_CMDS (256) #define BLK_SCSI_CMD_PER_LONG (BLK_SCSI_MAX_CMDS / (sizeof(long) * 8)) @@ -143,6 +148,8 @@ struct disk_part_tbl { struct hd_struct __rcu *part[]; }; +struct disk_events; + struct gendisk { /* major, first_minor and minors are input parameters only, * don't use directly. Use disk_devt() and disk_max_parts(). @@ -154,6 +161,10 @@ struct gendisk { char disk_name[DISK_NAME_LEN]; /* name of major driver */ char *(*devnode)(struct gendisk *gd, mode_t *mode); + + unsigned int events; /* supported events */ + unsigned int async_events; /* async events, subset of all */ + /* Array of pointers to partitions indexed by partno. * Protected with matching bdev lock but stat and other * non-critical accesses use RCU. Always access through @@ -171,8 +182,8 @@ struct gendisk { struct kobject *slave_dir; struct timer_rand_state *random; - atomic_t sync_io; /* RAID */ + struct disk_events *ev; #ifdef CONFIG_BLK_DEV_INTEGRITY struct blk_integrity *integrity; #endif @@ -405,6 +416,11 @@ static inline int get_disk_ro(struct gendisk *disk) return disk->part0.policy; } +extern void disk_block_events(struct gendisk *disk); +extern void disk_unblock_events(struct gendisk *disk); +extern void disk_check_events(struct gendisk *disk); +extern unsigned int disk_clear_events(struct gendisk *disk, unsigned int mask); + /* drivers/char/random.c */ extern void add_disk_randomness(struct gendisk *disk); extern void rand_initialize_disk(struct gendisk *disk); -- cgit v1.2.3 From 2d9217296bfa6fdc0d3707264076e5296faffdbd Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 8 Dec 2010 20:57:38 +0100 Subject: cdrom: add ->check_events() support In principle, cdrom just needs to pass through ->check_events() but CDROM_MEDIA_CHANGED ioctl makes things a bit more complex. Just as with ->media_changed() support, cdrom code needs to buffer the events and serve them to ioctl and vfs as requested. As the code has to deal with both ->check_events() and ->media_changed(), and vfs and ioctl event buffering, this patch adds check_events caching on top of the existing cdi->mc_flags buffering. It may be a good idea to deprecate CDROM_MEDIA_CHANGED ioctl and remove all this mess. Signed-off-by: Tejun Heo Signed-off-by: Jens Axboe --- include/linux/cdrom.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/cdrom.h b/include/linux/cdrom.h index 78e904796622..35eae4b67503 100644 --- a/include/linux/cdrom.h +++ b/include/linux/cdrom.h @@ -946,6 +946,8 @@ struct cdrom_device_info { /* device-related storage */ unsigned int options : 30; /* options flags */ unsigned mc_flags : 2; /* media change buffer flags */ + unsigned int vfs_events; /* cached events for vfs path */ + unsigned int ioctl_events; /* cached events for ioctl path */ int use_count; /* number of times device opened */ char name[20]; /* name of the device type */ /* per-device flags */ @@ -965,6 +967,8 @@ struct cdrom_device_ops { int (*open) (struct cdrom_device_info *, int); void (*release) (struct cdrom_device_info *); int (*drive_status) (struct cdrom_device_info *, int); + unsigned int (*check_events) (struct cdrom_device_info *cdi, + unsigned int clearing, int slot); int (*media_changed) (struct cdrom_device_info *, int); int (*tray_move) (struct cdrom_device_info *, int); int (*lock_door) (struct cdrom_device_info *, int); @@ -993,6 +997,8 @@ extern int cdrom_open(struct cdrom_device_info *cdi, struct block_device *bdev, extern void cdrom_release(struct cdrom_device_info *cdi, fmode_t mode); extern int cdrom_ioctl(struct cdrom_device_info *cdi, struct block_device *bdev, fmode_t mode, unsigned int cmd, unsigned long arg); +extern unsigned int cdrom_check_events(struct cdrom_device_info *cdi, + unsigned int clearing); extern int cdrom_media_changed(struct cdrom_device_info *); extern int register_cdrom(struct cdrom_device_info *cdi); -- cgit v1.2.3 From d9c407b138926132e1f93c01fb2dee50eb0bb615 Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Tue, 14 Dec 2010 14:55:50 +0000 Subject: NFS: Introduce new-style XDR encoding functions for NFSv3 We're interested in taking advantage of the safety benefits of xdr_streams. These data structures allow more careful checking for buffer overflow while encoding. More careful type checking is also introduced in the new functions. For efficiency, we also eventually want to be able to pass xdr_streams from call_encode() to all XDR encoding functions, rather than building an xdr_stream in every XDR encoding function in the kernel. To do this means all encoders must be ready to handle a passed-in xdr_stream. The new encoders follow the modern paradigm for XDR encoders: BUG on error, and always return a zero status code. Static helper functions are left without the "inline" directive. This allows the compiler to choose automatically how to optimize these for size or speed. Signed-off-by: Chuck Lever Tested-by: J. Bruce Fields Signed-off-by: Trond Myklebust --- include/linux/nfs3.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nfs3.h b/include/linux/nfs3.h index ac33806ec7f9..e2ee14fd0083 100644 --- a/include/linux/nfs3.h +++ b/include/linux/nfs3.h @@ -11,6 +11,8 @@ #define NFS3_MAXGROUPS 16 #define NFS3_FHSIZE 64 #define NFS3_COOKIESIZE 4 +#define NFS3_CREATEVERFSIZE 8 +#define NFS3_COOKIEVERFSIZE 8 #define NFS3_FIFO_DEV (-1) #define NFS3MODE_FMT 0170000 #define NFS3MODE_DIR 0040000 -- cgit v1.2.3 From e4f9323409369a3aeb01885c0c4409d2eeec794a Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Tue, 14 Dec 2010 14:56:30 +0000 Subject: NFS: Introduce new-style XDR decoding functions for NFSv2 We'd like to prevent local buffer overflows caused by malicious or broken servers. New xdr_stream style decoders can do that. For efficiency, we also eventually want to be able to pass xdr_streams from call_decode() to all XDR decoding functions, rather than building an xdr_stream in every XDR decoding function in the kernel. Static helper functions are left without the "inline" directive. This allows the compiler to choose automatically how to optimize these for size or speed. Signed-off-by: Chuck Lever Tested-by: J. Bruce Fields Signed-off-by: Trond Myklebust --- include/linux/nfs3.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/nfs3.h b/include/linux/nfs3.h index e2ee14fd0083..6ccfe3b641e1 100644 --- a/include/linux/nfs3.h +++ b/include/linux/nfs3.h @@ -13,6 +13,7 @@ #define NFS3_COOKIESIZE 4 #define NFS3_CREATEVERFSIZE 8 #define NFS3_COOKIEVERFSIZE 8 +#define NFS3_WRITEVERFSIZE 8 #define NFS3_FIFO_DEV (-1) #define NFS3MODE_FMT 0170000 #define NFS3MODE_DIR 0040000 -- cgit v1.2.3 From d8367c504e39528a057a5d7a267b6724f7fdb4b8 Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Tue, 14 Dec 2010 14:57:52 +0000 Subject: lockd: Move nlmdbg_cookie2a() to svclock.c Clean up. nlmdbg_cookie2a() is used only in svclock.c. Signed-off-by: Chuck Lever Tested-by: J. Bruce Fields Signed-off-by: Trond Myklebust --- include/linux/lockd/debug.h | 10 ---------- 1 file changed, 10 deletions(-) (limited to 'include/linux') diff --git a/include/linux/lockd/debug.h b/include/linux/lockd/debug.h index 34b2b7f33c3b..257d3779f2ab 100644 --- a/include/linux/lockd/debug.h +++ b/include/linux/lockd/debug.h @@ -44,14 +44,4 @@ #define NLMDBG_XDR 0x0100 #define NLMDBG_ALL 0x7fff - -/* - * Support for printing NLM cookies in dprintk() - */ -#ifdef RPC_DEBUG -struct nlm_cookie; -/* Call this function with the BKL held (it uses a static buffer) */ -extern const char *nlmdbg_cookie2a(const struct nlm_cookie *); -#endif - #endif /* LINUX_LOCKD_DEBUG_H */ -- cgit v1.2.3 From 573c4e1ef53a6b891b73cc2257e1604da754a2e4 Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Tue, 14 Dec 2010 14:58:11 +0000 Subject: NFS: Simplify ->decode_dirent() calling sequence Clean up. The pointer returned by ->decode_dirent() is no longer used as a pointer. The only call site (xdr_decode() in fs/nfs/dir.c) simply extracts the errno value encoded in the pointer. Replace the returned pointer with a standard integer errno return value. Also, pass the "server" argument as part of the nfs_entry instead of as a separate parameter. It's faster to derive "server" in nfs_readdir_xdr_to_array() since we already have the directory's inode handy. "server" ought to be invariant for a set of entries in the same directory, right? The legacy versions of decode_dirent() don't use "server" anyway, so it's wasted work for them to derive and pass "server" for each entry. Signed-off-by: Chuck Lever Tested-by: J. Bruce Fields Signed-off-by: Trond Myklebust --- include/linux/nfs_xdr.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 80f07198a31a..236e7e4b99a0 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -484,6 +484,7 @@ struct nfs_entry { struct nfs_fh * fh; struct nfs_fattr * fattr; unsigned char d_type; + struct nfs_server * server; }; /* @@ -1089,7 +1090,7 @@ struct nfs_rpc_ops { int (*pathconf) (struct nfs_server *, struct nfs_fh *, struct nfs_pathconf *); int (*set_capabilities)(struct nfs_server *, struct nfs_fh *); - __be32 *(*decode_dirent)(struct xdr_stream *, struct nfs_entry *, struct nfs_server *, int plus); + int (*decode_dirent)(struct xdr_stream *, struct nfs_entry *, int); void (*read_setup) (struct nfs_read_data *, struct rpc_message *); int (*read_done) (struct rpc_task *, struct nfs_read_data *); void (*write_setup) (struct nfs_write_data *, struct rpc_message *); -- cgit v1.2.3 From 9f06c719f474be7003763284a990bed6377bb0d4 Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Tue, 14 Dec 2010 14:59:18 +0000 Subject: SUNRPC: New xdr_streams XDR encoder API Now that all client-side XDR encoder routines use xdr_streams, there should be no need to support the legacy calling sequence [rpc_rqst *, __be32 *, RPC arg *] anywhere. We can construct an xdr_stream in the generic RPC code, instead of in each encoder function. Also, all the client-side encoder functions return 0 now, making a return value superfluous. Take this opportunity to convert them to return void instead. This is a refactoring change. It should not cause different behavior. Signed-off-by: Chuck Lever Tested-by: J. Bruce Fields Signed-off-by: Trond Myklebust --- include/linux/sunrpc/auth.h | 4 ++-- include/linux/sunrpc/clnt.h | 2 +- include/linux/sunrpc/xdr.h | 9 +++++++-- 3 files changed, 10 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/sunrpc/auth.h b/include/linux/sunrpc/auth.h index b2024757edd5..d88cffbaa6df 100644 --- a/include/linux/sunrpc/auth.h +++ b/include/linux/sunrpc/auth.h @@ -110,7 +110,7 @@ struct rpc_credops { __be32 * (*crmarshal)(struct rpc_task *, __be32 *); int (*crrefresh)(struct rpc_task *); __be32 * (*crvalidate)(struct rpc_task *, __be32 *); - int (*crwrap_req)(struct rpc_task *, kxdrproc_t, + int (*crwrap_req)(struct rpc_task *, kxdreproc_t, void *, __be32 *, void *); int (*crunwrap_resp)(struct rpc_task *, kxdrproc_t, void *, __be32 *, void *); @@ -139,7 +139,7 @@ struct rpc_cred * rpcauth_generic_bind_cred(struct rpc_task *, struct rpc_cred * void put_rpccred(struct rpc_cred *); __be32 * rpcauth_marshcred(struct rpc_task *, __be32 *); __be32 * rpcauth_checkverf(struct rpc_task *, __be32 *); -int rpcauth_wrap_req(struct rpc_task *task, kxdrproc_t encode, void *rqstp, __be32 *data, void *obj); +int rpcauth_wrap_req(struct rpc_task *task, kxdreproc_t encode, void *rqstp, __be32 *data, void *obj); int rpcauth_unwrap_resp(struct rpc_task *task, kxdrproc_t decode, void *rqstp, __be32 *data, void *obj); int rpcauth_refreshcred(struct rpc_task *); void rpcauth_invalcred(struct rpc_task *); diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h index a5a55f284b7d..7b19c4e1ce53 100644 --- a/include/linux/sunrpc/clnt.h +++ b/include/linux/sunrpc/clnt.h @@ -89,7 +89,7 @@ struct rpc_version { */ struct rpc_procinfo { u32 p_proc; /* RPC procedure number */ - kxdrproc_t p_encode; /* XDR encode function */ + kxdreproc_t p_encode; /* XDR encode function */ kxdrproc_t p_decode; /* XDR decode function */ unsigned int p_arglen; /* argument hdr length (u32) */ unsigned int p_replen; /* reply hdr length (u32) */ diff --git a/include/linux/sunrpc/xdr.h b/include/linux/sunrpc/xdr.h index 498ab93a81e4..a21cf5378c1d 100644 --- a/include/linux/sunrpc/xdr.h +++ b/include/linux/sunrpc/xdr.h @@ -33,8 +33,8 @@ struct xdr_netobj { }; /* - * This is the generic XDR function. rqstp is either a rpc_rqst (client - * side) or svc_rqst pointer (server side). + * This is the legacy generic XDR function. rqstp is either a rpc_rqst + * (client side) or svc_rqst pointer (server side). * Encode functions always assume there's enough room in the buffer. */ typedef int (*kxdrproc_t)(void *rqstp, __be32 *data, void *obj); @@ -203,6 +203,11 @@ struct xdr_stream { struct kvec *iov; /* pointer to the current kvec */ }; +/* + * This is the xdr_stream style generic XDR function. + */ +typedef void (*kxdreproc_t)(void *rqstp, struct xdr_stream *xdr, void *obj); + extern void xdr_init_encode(struct xdr_stream *xdr, struct xdr_buf *buf, __be32 *p); extern __be32 *xdr_reserve_space(struct xdr_stream *xdr, size_t nbytes); extern void xdr_write_pages(struct xdr_stream *xdr, struct page **pages, -- cgit v1.2.3 From bf2695516db982e90a22fc94f93491b481796bb1 Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Tue, 14 Dec 2010 14:59:29 +0000 Subject: SUNRPC: New xdr_streams XDR decoder API Now that all client-side XDR decoder routines use xdr_streams, there should be no need to support the legacy calling sequence [rpc_rqst *, __be32 *, RPC res *] anywhere. We can construct an xdr_stream in the generic RPC code, instead of in each decoder function. This is a refactoring change. It should not cause different behavior. Signed-off-by: Chuck Lever Tested-by: J. Bruce Fields Signed-off-by: Trond Myklebust --- include/linux/sunrpc/auth.h | 4 ++-- include/linux/sunrpc/clnt.h | 2 +- include/linux/sunrpc/xdr.h | 3 ++- 3 files changed, 5 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/sunrpc/auth.h b/include/linux/sunrpc/auth.h index d88cffbaa6df..8521067ed4f7 100644 --- a/include/linux/sunrpc/auth.h +++ b/include/linux/sunrpc/auth.h @@ -112,7 +112,7 @@ struct rpc_credops { __be32 * (*crvalidate)(struct rpc_task *, __be32 *); int (*crwrap_req)(struct rpc_task *, kxdreproc_t, void *, __be32 *, void *); - int (*crunwrap_resp)(struct rpc_task *, kxdrproc_t, + int (*crunwrap_resp)(struct rpc_task *, kxdrdproc_t, void *, __be32 *, void *); }; @@ -140,7 +140,7 @@ void put_rpccred(struct rpc_cred *); __be32 * rpcauth_marshcred(struct rpc_task *, __be32 *); __be32 * rpcauth_checkverf(struct rpc_task *, __be32 *); int rpcauth_wrap_req(struct rpc_task *task, kxdreproc_t encode, void *rqstp, __be32 *data, void *obj); -int rpcauth_unwrap_resp(struct rpc_task *task, kxdrproc_t decode, void *rqstp, __be32 *data, void *obj); +int rpcauth_unwrap_resp(struct rpc_task *task, kxdrdproc_t decode, void *rqstp, __be32 *data, void *obj); int rpcauth_refreshcred(struct rpc_task *); void rpcauth_invalcred(struct rpc_task *); int rpcauth_uptodatecred(struct rpc_task *); diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h index 7b19c4e1ce53..ef9476a36ff7 100644 --- a/include/linux/sunrpc/clnt.h +++ b/include/linux/sunrpc/clnt.h @@ -90,7 +90,7 @@ struct rpc_version { struct rpc_procinfo { u32 p_proc; /* RPC procedure number */ kxdreproc_t p_encode; /* XDR encode function */ - kxdrproc_t p_decode; /* XDR decode function */ + kxdrdproc_t p_decode; /* XDR decode function */ unsigned int p_arglen; /* argument hdr length (u32) */ unsigned int p_replen; /* reply hdr length (u32) */ unsigned int p_count; /* call count */ diff --git a/include/linux/sunrpc/xdr.h b/include/linux/sunrpc/xdr.h index a21cf5378c1d..9a21e8102c42 100644 --- a/include/linux/sunrpc/xdr.h +++ b/include/linux/sunrpc/xdr.h @@ -204,9 +204,10 @@ struct xdr_stream { }; /* - * This is the xdr_stream style generic XDR function. + * These are the xdr_stream style generic XDR encode and decode functions. */ typedef void (*kxdreproc_t)(void *rqstp, struct xdr_stream *xdr, void *obj); +typedef int (*kxdrdproc_t)(void *rqstp, struct xdr_stream *xdr, void *obj); extern void xdr_init_encode(struct xdr_stream *xdr, struct xdr_buf *buf, __be32 *p); extern __be32 *xdr_reserve_space(struct xdr_stream *xdr, size_t nbytes); -- cgit v1.2.3 From 7db836d4a427c3c64406b00b6d8d745d6335d72a Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Tue, 14 Dec 2010 15:05:42 +0000 Subject: lockd: Split nlm_release_call() The nlm_release_call() function is invoked from both the server and the client side. We're about to introduce a distinct server- and client-side nlm_release_host(), so nlm_release_call() must first be split into a client-side and a server-side version. Signed-off-by: Chuck Lever Signed-off-by: Trond Myklebust --- include/linux/lockd/lockd.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/lockd/lockd.h b/include/linux/lockd/lockd.h index 2dee05e5119a..a32ba62455af 100644 --- a/include/linux/lockd/lockd.h +++ b/include/linux/lockd/lockd.h @@ -202,9 +202,9 @@ extern u32 nsm_local_state; * Lockd client functions */ struct nlm_rqst * nlm_alloc_call(struct nlm_host *host); -void nlm_release_call(struct nlm_rqst *); int nlm_async_call(struct nlm_rqst *, u32, const struct rpc_call_ops *); int nlm_async_reply(struct nlm_rqst *, u32, const struct rpc_call_ops *); +void nlmclnt_release_call(struct nlm_rqst *); struct nlm_wait * nlmclnt_prepare_block(struct nlm_host *host, struct file_lock *fl); void nlmclnt_finish_block(struct nlm_wait *block); int nlmclnt_block(struct nlm_wait *block, struct nlm_rqst *req, long timeout); @@ -267,6 +267,7 @@ unsigned long nlmsvc_retry_blocked(void); void nlmsvc_traverse_blocks(struct nlm_host *, struct nlm_file *, nlm_host_match_fn_t match); void nlmsvc_grant_reply(struct nlm_cookie *, __be32); +void nlmsvc_release_call(struct nlm_rqst *); /* * File handling for the server personality -- cgit v1.2.3 From 8ea6ecc8b0759756a766c05dc7c98c51ec90de37 Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Tue, 14 Dec 2010 15:05:52 +0000 Subject: lockd: Create client-side nlm_host cache NFS clients don't need the garbage collection processing that is performed on nlm_host structures. The client picks up an nlm_host at mount time and holds a reference to it until the file system is unmounted. Servers, on the other hand, don't have a precise way to tell when an nlm_host is no longer being used, so zero refcount nlm_host entries are left to expire in the cache after a time. Basically there's nothing holding a reference to an nlm_host between individual server-side NLM requests, but we can't afford the expense of recreating them for every new NLM request from a client. The nlm_host cache adds some lifetime hysteresis to entries in the cache so the next time a particular nlm_host is needed, it's likely to be discovered by a lookup rather than created from whole cloth. With the new implementation, client nlm_host cache items are no longer garbage collected, and are destroyed directly by a new release function specialized for client entries, nlmclnt_release_host(). They are cached in their own data structure, and have their own lookup logic, simplified and specialized for client nlm_host entries. However, the client nlm_host cache still shares reboot recovery logic with the server nlm_host cache. The NSM "peer rebooted" downcall for clients and servers still come through the same RPC call. This is a legacy formal API that would be difficult to alter, and besides, the user space NSM implementation can't tell the difference between peers that are clients or servers. For this reason, the client cache continues to share the nlm_host_mutex (and reboot recovery logic) with the server cache. Signed-off-by: Chuck Lever Signed-off-by: Trond Myklebust --- include/linux/lockd/lockd.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/lockd/lockd.h b/include/linux/lockd/lockd.h index a32ba62455af..6c2a0e2f298e 100644 --- a/include/linux/lockd/lockd.h +++ b/include/linux/lockd/lockd.h @@ -223,6 +223,7 @@ struct nlm_host *nlmclnt_lookup_host(const struct sockaddr *sap, const u32 version, const char *hostname, int noresvport); +void nlmclnt_release_host(struct nlm_host *); struct nlm_host *nlmsvc_lookup_host(const struct svc_rqst *rqstp, const char *hostname, const size_t hostname_len); -- cgit v1.2.3 From 67216b94d498f5880d8bba2a6b841880739dd524 Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Tue, 14 Dec 2010 15:06:12 +0000 Subject: lockd: Clean up nlmsvc_lookup_host() Clean up. Change nlmsvc_lookup_host() to be purpose-built for server-side nlm_host management. This replaces the generic nlm_lookup_host() helper function, just like on the client side. The lookup logic is specialized for server host lookups. The server side cache also gets its own specialized equivalent of the nlm_release_host() function. Signed-off-by: Chuck Lever Signed-off-by: Trond Myklebust --- include/linux/lockd/lockd.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/lockd/lockd.h b/include/linux/lockd/lockd.h index 6c2a0e2f298e..ff9abff55aa0 100644 --- a/include/linux/lockd/lockd.h +++ b/include/linux/lockd/lockd.h @@ -227,10 +227,10 @@ void nlmclnt_release_host(struct nlm_host *); struct nlm_host *nlmsvc_lookup_host(const struct svc_rqst *rqstp, const char *hostname, const size_t hostname_len); +void nlmsvc_release_host(struct nlm_host *); struct rpc_clnt * nlm_bind_host(struct nlm_host *); void nlm_rebind_host(struct nlm_host *); struct nlm_host * nlm_get_host(struct nlm_host *); -void nlm_release_host(struct nlm_host *); void nlm_shutdown_hosts(void); void nlm_host_rebooted(const struct nlm_reboot *); -- cgit v1.2.3 From 3f84622d7c7818077f5e6cf4b8a0d1b10dc65147 Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Sat, 27 Nov 2010 19:26:32 +0100 Subject: SSB: Fix nvram_get on BCM47xx platform The nvram_get function was never in the mainline kernel, it only existed in an external OpenWrt patch. Use nvram_getenv function, which is in mainline and use an include instead of an extra function declaration. et0macaddr contains the mac address in text from like 00:11:22:33:44:55. We have to parse it before adding it into macaddr. nvram_parse_macaddr will be merged into asm/mach-bcm47xx/nvram.h through the MIPS git tree and will be available soon. It will not build now without nvram_parse_macaddr, but it hasn't before either. Signed-off-by: Hauke Mehrtens To: linux-mips@linux-mips.org Cc: mb@bu3sch.de Cc: netdev@vger.kernel.org Cc: Hauke Mehrtens Acked-by: Michael Buesch Patchwork: https://patchwork.linux-mips.org/patch/1849/ Signed-off-by: Ralf Baechle --- include/linux/ssb/ssb_driver_gige.h | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ssb/ssb_driver_gige.h b/include/linux/ssb/ssb_driver_gige.h index 942e38736901..eba52a100533 100644 --- a/include/linux/ssb/ssb_driver_gige.h +++ b/include/linux/ssb/ssb_driver_gige.h @@ -96,16 +96,21 @@ static inline bool ssb_gige_must_flush_posted_writes(struct pci_dev *pdev) return 0; } -extern char * nvram_get(const char *name); +#ifdef CONFIG_BCM47XX +#include /* Get the device MAC address */ static inline void ssb_gige_get_macaddr(struct pci_dev *pdev, u8 *macaddr) { -#ifdef CONFIG_BCM47XX - char *res = nvram_get("et0macaddr"); - if (res) - memcpy(macaddr, res, 6); -#endif + char buf[20]; + if (nvram_getenv("et0macaddr", buf, sizeof(buf)) < 0) + return; + nvram_parse_macaddr(buf, macaddr); } +#else +static inline void ssb_gige_get_macaddr(struct pci_dev *pdev, u8 *macaddr) +{ +} +#endif extern int ssb_gige_pcibios_plat_dev_init(struct ssb_device *sdev, struct pci_dev *pdev); -- cgit v1.2.3 From cf4e594ea7e55555e81647b74a3a8e8b2826a529 Mon Sep 17 00:00:00 2001 From: Jouni Malinen Date: Thu, 16 Dec 2010 00:52:40 +0200 Subject: nl80211: Add notification for dropped Deauth/Disassoc Add a new notification to indicate that a received, unprotected Deauthentication or Disassociation frame was dropped due to management frame protection being in use. This notification is needed to allow user space (e.g., wpa_supplicant) to implement SA Query procedure to recover from association state mismatch between an AP and STA. This is needed to avoid getting stuck in non-working state when MFP (IEEE 802.11w) is used and a protected Deauthentication or Disassociation frame is dropped for any reason. After that, the station would silently discard any unprotected Deauthentication or Disassociation frame that could be indicating that the AP does not have association for the STA (when the Reason Code would be 6 or 7). IEEE Std 802.11w-2009, 11.13 describes this recovery mechanism. Signed-off-by: Jouni Malinen Signed-off-by: John W. Linville --- include/linux/nl80211.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index 1cee56b3a79a..7483a89cee8f 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -399,6 +399,13 @@ * @NL80211_CMD_LEAVE_MESH: Leave the mesh network -- no special arguments, the * network is determined by the network interface. * + * @NL80211_CMD_UNPROT_DEAUTHENTICATE: Unprotected deauthentication frame + * notification. This event is used to indicate that an unprotected + * deauthentication frame was dropped when MFP is in use. + * @NL80211_CMD_UNPROT_DISASSOCIATE: Unprotected disassociation frame + * notification. This event is used to indicate that an unprotected + * disassociation frame was dropped when MFP is in use. + * * @NL80211_CMD_MAX: highest used command number * @__NL80211_CMD_AFTER_LAST: internal use */ @@ -508,6 +515,9 @@ enum nl80211_commands { NL80211_CMD_JOIN_MESH, NL80211_CMD_LEAVE_MESH, + NL80211_CMD_UNPROT_DEAUTHENTICATE, + NL80211_CMD_UNPROT_DISASSOCIATE, + /* add new commands above here */ /* used to define NL80211_CMD_MAX below */ -- cgit v1.2.3 From 6ce5b1ce5f6922db32599e73bcb22f5cdcbf241f Mon Sep 17 00:00:00 2001 From: Timur Tabi Date: Mon, 13 Dec 2010 14:08:53 -0600 Subject: tty: fix typos/errors in tty_driver.h comments Fix various typos and other errors in comments of tty_driver.h. The most significant is the wrong name of a function for the description of TTY_DRIVER_DYNAMIC_DEV. Signed-off-by: Timur Tabi Signed-off-by: Greg Kroah-Hartman --- include/linux/tty_driver.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/tty_driver.h b/include/linux/tty_driver.h index 09678ed370f8..c3d43eb4150c 100644 --- a/include/linux/tty_driver.h +++ b/include/linux/tty_driver.h @@ -102,7 +102,7 @@ * unsigned int cmd, unsigned long arg); * * This routine allows the tty driver to implement - * device-specific ioctl's. If the ioctl number passed in cmd + * device-specific ioctls. If the ioctl number passed in cmd * is not recognized by the driver, it should return ENOIOCTLCMD. * * Optional @@ -167,12 +167,12 @@ * * void (*hangup)(struct tty_struct *tty); * - * This routine notifies the tty driver that it should hangup the + * This routine notifies the tty driver that it should hang up the * tty device. * * Optional: * - * int (*break_ctl)(struct tty_stuct *tty, int state); + * int (*break_ctl)(struct tty_struct *tty, int state); * * This optional routine requests the tty driver to turn on or * off BREAK status on the RS-232 port. If state is -1, @@ -358,7 +358,7 @@ static inline struct tty_driver *tty_driver_kref_get(struct tty_driver *d) * overruns, either.) * * TTY_DRIVER_DYNAMIC_DEV --- if set, the individual tty devices need - * to be registered with a call to tty_register_driver() when the + * to be registered with a call to tty_register_device() when the * device is found in the system and unregistered with a call to * tty_unregister_device() so the devices will be show up * properly in sysfs. If not set, driver->num entries will be -- cgit v1.2.3 From 3f960dbb9dfe29ff283810624c4340c79fde87f5 Mon Sep 17 00:00:00 2001 From: "Govindraj.R" Date: Thu, 16 Dec 2010 18:12:47 +0530 Subject: Serial: Avoid unbalanced IRQ wake disable during resume To avoid unbalanced IRQ wake disable, ensure that wakeups are disabled only when wakeups have been successfully enabled. Tested on OMAP3630SDP/ZOOM3. Signed-off-by: Govindraj.R Reported-by: Paul Walmsley Cc: Santosh Shilimkar Acked-by: Kevin Hilman Signed-off-by: Greg Kroah-Hartman --- include/linux/serial_core.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index 7a6daf189995..a23fa29d4eb0 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -365,6 +365,7 @@ struct uart_port { struct device *dev; /* parent device */ unsigned char hub6; /* this should be in the 8250 driver */ unsigned char suspended; + unsigned char irq_wake; unsigned char unused[2]; void *private_data; /* generic platform data pointer */ }; -- cgit v1.2.3 From a3d22a68d752ccc1a01bb0a64dd70b7a98bf9e23 Mon Sep 17 00:00:00 2001 From: Vladislav Zolotarov Date: Mon, 13 Dec 2010 06:27:10 +0000 Subject: bnx2x: Take the distribution range definition out of skb_tx_hash() Move the calcualation of the Tx hash for a given hash range into a separate function and define the skb_tx_hash(), which calculates a Tx hash for a [0; dev->real_num_tx_queues - 1] hash values range, using this function (__skb_tx_hash()). Signed-off-by: Vladislav Zolotarov Signed-off-by: Eilon Greenstein Signed-off-by: David S. Miller --- include/linux/netdevice.h | 10 ++++++++++ include/linux/skbuff.h | 5 +++-- 2 files changed, 13 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index d31bc3c94717..445e6825f8eb 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -1747,6 +1747,16 @@ static inline void netif_wake_subqueue(struct net_device *dev, u16 queue_index) __netif_schedule(txq->qdisc); } +/* + * Returns a Tx hash for the given packet when dev->real_num_tx_queues is used + * as a distribution range limit for the returned value. + */ +static inline u16 skb_tx_hash(const struct net_device *dev, + const struct sk_buff *skb) +{ + return __skb_tx_hash(dev, skb, dev->real_num_tx_queues); +} + /** * netif_is_multiqueue - test if device has multiple transmit queues * @dev: network device diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 19f37a6ee6c4..4c4bec6316d9 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -2165,8 +2165,9 @@ static inline bool skb_rx_queue_recorded(const struct sk_buff *skb) return skb->queue_mapping != 0; } -extern u16 skb_tx_hash(const struct net_device *dev, - const struct sk_buff *skb); +extern u16 __skb_tx_hash(const struct net_device *dev, + const struct sk_buff *skb, + unsigned int num_tx_queues); #ifdef CONFIG_XFRM static inline struct sec_path *skb_sec_path(struct sk_buff *skb) -- cgit v1.2.3 From b236da6931e2482bfe44a7865dd4e7bb036f3496 Mon Sep 17 00:00:00 2001 From: Changli Gao Date: Tue, 14 Dec 2010 03:09:15 +0000 Subject: net: use NUMA_NO_NODE instead of the magic number -1 Signed-off-by: Changli Gao Signed-off-by: David S. Miller --- include/linux/netdevice.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 445e6825f8eb..cc916c5c3279 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -530,7 +530,7 @@ static inline int netdev_queue_numa_node_read(const struct netdev_queue *q) #if defined(CONFIG_XPS) && defined(CONFIG_NUMA) return q->numa_node; #else - return -1; + return NUMA_NO_NODE; #endif } -- cgit v1.2.3 From 04fb451eff978ca059399eab83d5594b073caf6f Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Micha=C5=82=20Miros=C5=82aw?= Date: Tue, 14 Dec 2010 15:24:08 +0000 Subject: net: Introduce skb_checksum_start_offset() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Introduce skb_checksum_start_offset() to replace repetitive calculation. Signed-off-by: Michał Mirosław Signed-off-by: David S. Miller --- include/linux/skbuff.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 4c4bec6316d9..20ec0a64cb9f 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -1355,6 +1355,11 @@ static inline void skb_set_mac_header(struct sk_buff *skb, const int offset) } #endif /* NET_SKBUFF_DATA_USES_OFFSET */ +static inline int skb_checksum_start_offset(const struct sk_buff *skb) +{ + return skb->csum_start - skb_headroom(skb); +} + static inline int skb_transport_offset(const struct sk_buff *skb) { return skb_transport_header(skb) - skb->data; -- cgit v1.2.3 From fbc92a3455577ab17615cbcb91826399061bd789 Mon Sep 17 00:00:00 2001 From: Kay Sievers Date: Wed, 1 Dec 2010 18:51:05 +0100 Subject: tty: add 'active' sysfs attribute to tty0 and console device tty: add 'active' sysfs attribute to tty0 and console device Userspace can query the actual virtual console, and the configured console devices behind /dev/tt0 and /dev/console. The last entry in the list of devices is the active device, analog to the console= kernel command line option. The attribute supports poll(), which is raised when the virtual console is changed or /dev/console is reconfigured. Signed-off-by: Kay Sievers Signed-off-by: Greg Kroah-Hartman index 0000000..b138b66 --- include/linux/console.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/console.h b/include/linux/console.h index 875cfb1c8132..9774fe6a1a97 100644 --- a/include/linux/console.h +++ b/include/linux/console.h @@ -151,7 +151,7 @@ extern int is_console_locked(void); extern int braille_register_console(struct console *, int index, char *console_options, char *braille_options); extern int braille_unregister_console(struct console *); - +extern void console_sysfs_notify(void); extern int console_suspend_enabled; /* Suspend and resume console messages over PM events */ -- cgit v1.2.3 From e692cb668fdd5a712c6ed2a2d6f2a36ee83997b4 Mon Sep 17 00:00:00 2001 From: "Martin K. Petersen" Date: Wed, 1 Dec 2010 19:41:49 +0100 Subject: block: Deprecate QUEUE_FLAG_CLUSTER and use queue_limits instead When stacking devices, a request_queue is not always available. This forced us to have a no_cluster flag in the queue_limits that could be used as a carrier until the request_queue had been set up for a metadevice. There were several problems with that approach. First of all it was up to the stacking device to remember to set queue flag after stacking had completed. Also, the queue flag and the queue limits had to be kept in sync at all times. We got that wrong, which could lead to us issuing commands that went beyond the max scatterlist limit set by the driver. The proper fix is to avoid having two flags for tracking the same thing. We deprecate QUEUE_FLAG_CLUSTER and use the queue limit directly in the block layer merging functions. The queue_limit 'no_cluster' is turned into 'cluster' to avoid double negatives and to ease stacking. Clustering defaults to being enabled as before. The queue flag logic is removed from the stacking function, and explicitly setting the cluster flag is no longer necessary in DM and MD. Reported-by: Ed Lin Signed-off-by: Martin K. Petersen Acked-by: Mike Snitzer Cc: stable@kernel.org Signed-off-by: Jens Axboe --- include/linux/blkdev.h | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index aae86fd10c4f..95aeeeb49e8b 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -250,7 +250,7 @@ struct queue_limits { unsigned char misaligned; unsigned char discard_misaligned; - unsigned char no_cluster; + unsigned char cluster; signed char discard_zeroes_data; }; @@ -380,7 +380,6 @@ struct request_queue #endif }; -#define QUEUE_FLAG_CLUSTER 0 /* cluster several segments into 1 */ #define QUEUE_FLAG_QUEUED 1 /* uses generic tag queueing */ #define QUEUE_FLAG_STOPPED 2 /* queue is stopped */ #define QUEUE_FLAG_SYNCFULL 3 /* read queue has been filled */ @@ -403,7 +402,6 @@ struct request_queue #define QUEUE_FLAG_SECDISCARD 19 /* supports SECDISCARD */ #define QUEUE_FLAG_DEFAULT ((1 << QUEUE_FLAG_IO_STAT) | \ - (1 << QUEUE_FLAG_CLUSTER) | \ (1 << QUEUE_FLAG_STACKABLE) | \ (1 << QUEUE_FLAG_SAME_COMP) | \ (1 << QUEUE_FLAG_ADD_RANDOM)) @@ -510,6 +508,11 @@ static inline void queue_flag_clear(unsigned int flag, struct request_queue *q) #define rq_data_dir(rq) ((rq)->cmd_flags & 1) +static inline unsigned int blk_queue_cluster(struct request_queue *q) +{ + return q->limits.cluster; +} + /* * We regard a request as sync, if either a read or a sync write */ -- cgit v1.2.3 From 72d4cd9f38b5ed96b75df4c622be25e1c2648dd3 Mon Sep 17 00:00:00 2001 From: Mike Snitzer Date: Fri, 17 Dec 2010 08:34:20 +0100 Subject: block: max hardware sectors limit wrapper Implement blk_limits_max_hw_sectors() and make blk_queue_max_hw_sectors() a wrapper around it. DM needs this to avoid setting queue_limits' max_hw_sectors and max_sectors directly. dm_set_device_limits() now leverages blk_limits_max_hw_sectors() logic to establish the appropriate max_hw_sectors minimum (PAGE_SIZE). Fixes issue where DM was incorrectly setting max_sectors rather than max_hw_sectors (which caused dm_merge_bvec()'s max_hw_sectors check to be ineffective). Signed-off-by: Mike Snitzer Cc: stable@kernel.org Acked-by: Martin K. Petersen Signed-off-by: Jens Axboe --- include/linux/blkdev.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 95aeeeb49e8b..36ab42c9bb99 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -808,6 +808,7 @@ extern struct request_queue *blk_init_allocated_queue(struct request_queue *, extern void blk_cleanup_queue(struct request_queue *); extern void blk_queue_make_request(struct request_queue *, make_request_fn *); extern void blk_queue_bounce_limit(struct request_queue *, u64); +extern void blk_limits_max_hw_sectors(struct queue_limits *, unsigned int); extern void blk_queue_max_hw_sectors(struct request_queue *, unsigned int); extern void blk_queue_max_segments(struct request_queue *, unsigned short); extern void blk_queue_max_segment_size(struct request_queue *, unsigned int); -- cgit v1.2.3 From b76834bc1b6db0a0923eed85c81b1113021b0612 Mon Sep 17 00:00:00 2001 From: Christoph Lameter Date: Mon, 6 Dec 2010 11:16:25 -0600 Subject: kprobes: Use this_cpu_ops Use this_cpu ops in various places to optimize per cpu data access. Cc: Jason Baron Cc: Namhyung Kim Acked-by: H. Peter Anvin Signed-off-by: Christoph Lameter Signed-off-by: Tejun Heo --- include/linux/kprobes.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/kprobes.h b/include/linux/kprobes.h index e7d1b2e0070d..0c251e9f0507 100644 --- a/include/linux/kprobes.h +++ b/include/linux/kprobes.h @@ -303,12 +303,12 @@ struct hlist_head * kretprobe_inst_table_head(struct task_struct *tsk); /* kprobe_running() will just return the current_kprobe on this CPU */ static inline struct kprobe *kprobe_running(void) { - return (__get_cpu_var(current_kprobe)); + return (__this_cpu_read(current_kprobe)); } static inline void reset_current_kprobe(void) { - __get_cpu_var(current_kprobe) = NULL; + __this_cpu_write(current_kprobe, NULL); } static inline struct kprobe_ctlblk *get_kprobe_ctlblk(void) -- cgit v1.2.3 From 909ea96468096b07fbb41aaf69be060d92bd9271 Mon Sep 17 00:00:00 2001 From: Christoph Lameter Date: Wed, 8 Dec 2010 16:22:55 +0100 Subject: core: Replace __get_cpu_var with __this_cpu_read if not used for an address. __get_cpu_var() can be replaced with this_cpu_read and will then use a single read instruction with implied address calculation to access the correct per cpu instance. However, the address of a per cpu variable passed to __this_cpu_read() cannot be determined (since it's an implied address conversion through segment prefixes). Therefore apply this only to uses of __get_cpu_var where the address of the variable is not used. Cc: Pekka Enberg Cc: Hugh Dickins Cc: Thomas Gleixner Acked-by: H. Peter Anvin Signed-off-by: Christoph Lameter Signed-off-by: Tejun Heo --- include/linux/elevator.h | 12 +++--------- include/linux/kernel_stat.h | 2 +- 2 files changed, 4 insertions(+), 10 deletions(-) (limited to 'include/linux') diff --git a/include/linux/elevator.h b/include/linux/elevator.h index 4fd978e7eb83..4d857973d2c9 100644 --- a/include/linux/elevator.h +++ b/include/linux/elevator.h @@ -195,15 +195,9 @@ enum { /* * io context count accounting */ -#define elv_ioc_count_mod(name, __val) \ - do { \ - preempt_disable(); \ - __get_cpu_var(name) += (__val); \ - preempt_enable(); \ - } while (0) - -#define elv_ioc_count_inc(name) elv_ioc_count_mod(name, 1) -#define elv_ioc_count_dec(name) elv_ioc_count_mod(name, -1) +#define elv_ioc_count_mod(name, __val) this_cpu_add(name, __val) +#define elv_ioc_count_inc(name) this_cpu_inc(name) +#define elv_ioc_count_dec(name) this_cpu_dec(name) #define elv_ioc_count_read(name) \ ({ \ diff --git a/include/linux/kernel_stat.h b/include/linux/kernel_stat.h index ad54c846911b..44e83ba12b5b 100644 --- a/include/linux/kernel_stat.h +++ b/include/linux/kernel_stat.h @@ -47,7 +47,7 @@ extern unsigned long long nr_context_switches(void); #ifndef CONFIG_GENERIC_HARDIRQS #define kstat_irqs_this_cpu(irq) \ - (kstat_this_cpu.irqs[irq]) + (this_cpu_read(kstat.irqs[irq]) struct irq_desc; -- cgit v1.2.3 From a663ffff1d2e94a7c549a37d08ed9169ce83bdd6 Mon Sep 17 00:00:00 2001 From: Christoph Lameter Date: Mon, 6 Dec 2010 11:39:59 -0600 Subject: percpu: Generic support for this_cpu_add, sub, dec, inc_return Introduce generic support for this_cpu_add_return etc. The fallback is to realize these operations with simpler __this_cpu_ops. tj: - Reformatted __cpu_size_call_return2() to make it more consistent with its neighbors. - Dropped unnecessary temp variable ret__ from __this_cpu_generic_add_return(). Reviewed-by: Tejun Heo Reviewed-by: Mathieu Desnoyers Acked-by: H. Peter Anvin Signed-off-by: Christoph Lameter Signed-off-by: Tejun Heo --- include/linux/percpu.h | 71 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 71 insertions(+) (limited to 'include/linux') diff --git a/include/linux/percpu.h b/include/linux/percpu.h index 5095b834a6fb..4d593defc47d 100644 --- a/include/linux/percpu.h +++ b/include/linux/percpu.h @@ -240,6 +240,21 @@ extern void __bad_size_call_parameter(void); pscr_ret__; \ }) +#define __pcpu_size_call_return2(stem, variable, ...) \ +({ \ + typeof(variable) pscr2_ret__; \ + __verify_pcpu_ptr(&(variable)); \ + switch(sizeof(variable)) { \ + case 1: pscr2_ret__ = stem##1(variable, __VA_ARGS__); break; \ + case 2: pscr2_ret__ = stem##2(variable, __VA_ARGS__); break; \ + case 4: pscr2_ret__ = stem##4(variable, __VA_ARGS__); break; \ + case 8: pscr2_ret__ = stem##8(variable, __VA_ARGS__); break; \ + default: \ + __bad_size_call_parameter(); break; \ + } \ + pscr2_ret__; \ +}) + #define __pcpu_size_call(stem, variable, ...) \ do { \ __verify_pcpu_ptr(&(variable)); \ @@ -529,6 +544,62 @@ do { \ # define __this_cpu_xor(pcp, val) __pcpu_size_call(__this_cpu_xor_, (pcp), (val)) #endif +#define _this_cpu_generic_add_return(pcp, val) \ +({ \ + typeof(pcp) ret__; \ + preempt_disable(); \ + __this_cpu_add(pcp, val); \ + ret__ = __this_cpu_read(pcp); \ + preempt_enable(); \ + ret__; \ +}) + +#ifndef this_cpu_add_return +# ifndef this_cpu_add_return_1 +# define this_cpu_add_return_1(pcp, val) _this_cpu_generic_add_return(pcp, val) +# endif +# ifndef this_cpu_add_return_2 +# define this_cpu_add_return_2(pcp, val) _this_cpu_generic_add_return(pcp, val) +# endif +# ifndef this_cpu_add_return_4 +# define this_cpu_add_return_4(pcp, val) _this_cpu_generic_add_return(pcp, val) +# endif +# ifndef this_cpu_add_return_8 +# define this_cpu_add_return_8(pcp, val) _this_cpu_generic_add_return(pcp, val) +# endif +# define this_cpu_add_return(pcp, val) __pcpu_size_call_return2(this_cpu_add_return_, pcp, val) +#endif + +#define this_cpu_sub_return(pcp, val) this_cpu_add_return(pcp, -(val)) +#define this_cpu_inc_return(pcp) this_cpu_add_return(pcp, 1) +#define this_cpu_dec_return(pcp) this_cpu_add_return(pcp, -1) + +#define __this_cpu_generic_add_return(pcp, val) \ +({ \ + __this_cpu_add(pcp, val); \ + __this_cpu_read(pcp); \ +}) + +#ifndef __this_cpu_add_return +# ifndef __this_cpu_add_return_1 +# define __this_cpu_add_return_1(pcp, val) __this_cpu_generic_add_return(pcp, val) +# endif +# ifndef __this_cpu_add_return_2 +# define __this_cpu_add_return_2(pcp, val) __this_cpu_generic_add_return(pcp, val) +# endif +# ifndef __this_cpu_add_return_4 +# define __this_cpu_add_return_4(pcp, val) __this_cpu_generic_add_return(pcp, val) +# endif +# ifndef __this_cpu_add_return_8 +# define __this_cpu_add_return_8(pcp, val) __this_cpu_generic_add_return(pcp, val) +# endif +# define __this_cpu_add_return(pcp, val) __pcpu_size_call_return2(this_cpu_add_return_, pcp, val) +#endif + +#define __this_cpu_sub_return(pcp, val) this_cpu_add_return(pcp, -(val)) +#define __this_cpu_inc_return(pcp) this_cpu_add_return(pcp, 1) +#define __this_cpu_dec_return(pcp) this_cpu_add_return(pcp, -1) + /* * IRQ safe versions of the per cpu RMW operations. Note that these operations * are *not* safe against modification of the same variable from another -- cgit v1.2.3 From cfb824349556904b319464139be5c75fce983b0d Mon Sep 17 00:00:00 2001 From: Christoph Lameter Date: Mon, 6 Dec 2010 11:40:03 -0600 Subject: highmem: Use this_cpu_xx_return() operations Use this_cpu operations to optimize access primitives for highmem. The main effect is the avoidance of address calculations through the use of a segment prefix. V3->V4 - kmap_atomic_idx: Do not return a value. - Use __this_cpu_dec without HIGHMEM_DEBUG Cc: Peter Zijlstra Cc: Catalin Marinas Acked-by: H. Peter Anvin Signed-off-by: Christoph Lameter Signed-off-by: Tejun Heo --- include/linux/highmem.h | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/highmem.h b/include/linux/highmem.h index b676c585574e..3a93f73a8acc 100644 --- a/include/linux/highmem.h +++ b/include/linux/highmem.h @@ -81,7 +81,8 @@ DECLARE_PER_CPU(int, __kmap_atomic_idx); static inline int kmap_atomic_idx_push(void) { - int idx = __get_cpu_var(__kmap_atomic_idx)++; + int idx = __this_cpu_inc_return(__kmap_atomic_idx) - 1; + #ifdef CONFIG_DEBUG_HIGHMEM WARN_ON_ONCE(in_irq() && !irqs_disabled()); BUG_ON(idx > KM_TYPE_NR); @@ -91,16 +92,18 @@ static inline int kmap_atomic_idx_push(void) static inline int kmap_atomic_idx(void) { - return __get_cpu_var(__kmap_atomic_idx) - 1; + return __this_cpu_read(__kmap_atomic_idx) - 1; } -static inline int kmap_atomic_idx_pop(void) +static inline void kmap_atomic_idx_pop(void) { - int idx = --__get_cpu_var(__kmap_atomic_idx); #ifdef CONFIG_DEBUG_HIGHMEM + int idx = __this_cpu_dec_return(__kmap_atomic_idx); + BUG_ON(idx < 0); +#else + __this_cpu_dec(__kmap_atomic_idx); #endif - return idx; } #endif -- cgit v1.2.3 From 403047754cf690b012369b8fb563b738b88086e6 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Fri, 17 Dec 2010 15:47:04 +0100 Subject: percpu,x86: relocate this_cpu_add_return() and friends - include/linux/percpu.h: this_cpu_add_return() and friends were located next to __this_cpu_add_return(). However, the overall organization is to first group by preemption safeness. Relocate this_cpu_add_return() and friends to preemption-safe area. - arch/x86/include/asm/percpu.h: Relocate percpu_add_return_op() after other more basic operations. Relocate [__]this_cpu_add_return_8() so that they're first grouped by preemption safeness. Signed-off-by: Tejun Heo Cc: Christoph Lameter --- include/linux/percpu.h | 60 +++++++++++++++++++++++++------------------------- 1 file changed, 30 insertions(+), 30 deletions(-) (limited to 'include/linux') diff --git a/include/linux/percpu.h b/include/linux/percpu.h index 4d593defc47d..3484e88d93f8 100644 --- a/include/linux/percpu.h +++ b/include/linux/percpu.h @@ -417,6 +417,36 @@ do { \ # define this_cpu_xor(pcp, val) __pcpu_size_call(this_cpu_or_, (pcp), (val)) #endif +#define _this_cpu_generic_add_return(pcp, val) \ +({ \ + typeof(pcp) ret__; \ + preempt_disable(); \ + __this_cpu_add(pcp, val); \ + ret__ = __this_cpu_read(pcp); \ + preempt_enable(); \ + ret__; \ +}) + +#ifndef this_cpu_add_return +# ifndef this_cpu_add_return_1 +# define this_cpu_add_return_1(pcp, val) _this_cpu_generic_add_return(pcp, val) +# endif +# ifndef this_cpu_add_return_2 +# define this_cpu_add_return_2(pcp, val) _this_cpu_generic_add_return(pcp, val) +# endif +# ifndef this_cpu_add_return_4 +# define this_cpu_add_return_4(pcp, val) _this_cpu_generic_add_return(pcp, val) +# endif +# ifndef this_cpu_add_return_8 +# define this_cpu_add_return_8(pcp, val) _this_cpu_generic_add_return(pcp, val) +# endif +# define this_cpu_add_return(pcp, val) __pcpu_size_call_return2(this_cpu_add_return_, pcp, val) +#endif + +#define this_cpu_sub_return(pcp, val) this_cpu_add_return(pcp, -(val)) +#define this_cpu_inc_return(pcp) this_cpu_add_return(pcp, 1) +#define this_cpu_dec_return(pcp) this_cpu_add_return(pcp, -1) + /* * Generic percpu operations that do not require preemption handling. * Either we do not care about races or the caller has the @@ -544,36 +574,6 @@ do { \ # define __this_cpu_xor(pcp, val) __pcpu_size_call(__this_cpu_xor_, (pcp), (val)) #endif -#define _this_cpu_generic_add_return(pcp, val) \ -({ \ - typeof(pcp) ret__; \ - preempt_disable(); \ - __this_cpu_add(pcp, val); \ - ret__ = __this_cpu_read(pcp); \ - preempt_enable(); \ - ret__; \ -}) - -#ifndef this_cpu_add_return -# ifndef this_cpu_add_return_1 -# define this_cpu_add_return_1(pcp, val) _this_cpu_generic_add_return(pcp, val) -# endif -# ifndef this_cpu_add_return_2 -# define this_cpu_add_return_2(pcp, val) _this_cpu_generic_add_return(pcp, val) -# endif -# ifndef this_cpu_add_return_4 -# define this_cpu_add_return_4(pcp, val) _this_cpu_generic_add_return(pcp, val) -# endif -# ifndef this_cpu_add_return_8 -# define this_cpu_add_return_8(pcp, val) _this_cpu_generic_add_return(pcp, val) -# endif -# define this_cpu_add_return(pcp, val) __pcpu_size_call_return2(this_cpu_add_return_, pcp, val) -#endif - -#define this_cpu_sub_return(pcp, val) this_cpu_add_return(pcp, -(val)) -#define this_cpu_inc_return(pcp) this_cpu_add_return(pcp, 1) -#define this_cpu_dec_return(pcp) this_cpu_add_return(pcp, -1) - #define __this_cpu_generic_add_return(pcp, val) \ ({ \ __this_cpu_add(pcp, val); \ -- cgit v1.2.3 From b6aa5901c7a2bd90d0b6b9866300d2648b2568f3 Mon Sep 17 00:00:00 2001 From: Henry C Chang Date: Wed, 15 Dec 2010 20:45:41 -0800 Subject: ceph: mark user pages dirty on direct-io reads For read operation, we have to set the argument _write_ of get_user_pages to 1 since we will write data to pages. Also, we need to SetPageDirty before releasing these pages. Signed-off-by: Henry C Chang Signed-off-by: Sage Weil --- include/linux/ceph/libceph.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ceph/libceph.h b/include/linux/ceph/libceph.h index 9e76d35670d2..72c72bfccb88 100644 --- a/include/linux/ceph/libceph.h +++ b/include/linux/ceph/libceph.h @@ -227,8 +227,10 @@ extern int ceph_open_session(struct ceph_client *client); extern void ceph_release_page_vector(struct page **pages, int num_pages); extern struct page **ceph_get_direct_page_vector(const char __user *data, - int num_pages); -extern void ceph_put_page_vector(struct page **pages, int num_pages); + int num_pages, + bool write_page); +extern void ceph_put_page_vector(struct page **pages, int num_pages, + bool dirty); extern void ceph_release_page_vector(struct page **pages, int num_pages); extern struct page **ceph_alloc_page_vector(int num_pages, gfp_t flags); extern int ceph_copy_user_to_page_vector(struct page **pages, -- cgit v1.2.3 From c0f5ac5426f7fd82b23dd5c6a1e633b290294a08 Mon Sep 17 00:00:00 2001 From: Bjorn Helgaas Date: Thu, 16 Dec 2010 10:38:41 -0700 Subject: Revert "resources: support allocating space within a region from the top down" This reverts commit e7f8567db9a7f6b3151b0b275e245c1cef0d9c70. Acked-by: H. Peter Anvin Signed-off-by: Bjorn Helgaas Signed-off-by: Jesse Barnes --- include/linux/ioport.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/ioport.h b/include/linux/ioport.h index d377ea815d45..b22790268b64 100644 --- a/include/linux/ioport.h +++ b/include/linux/ioport.h @@ -112,7 +112,6 @@ struct resource_list { /* PC/ISA/whatever - the normal PC address spaces: IO and memory */ extern struct resource ioport_resource; extern struct resource iomem_resource; -extern int resource_alloc_from_bottom; extern struct resource *request_resource_conflict(struct resource *root, struct resource *new); extern int request_resource(struct resource *root, struct resource *new); -- cgit v1.2.3 From fcb119183c73bf0781009713f303e28b1fb13d3e Mon Sep 17 00:00:00 2001 From: Bjorn Helgaas Date: Thu, 16 Dec 2010 10:38:46 -0700 Subject: resources: add arch hook for preventing allocation in reserved areas This adds arch_remove_reservations(), which an arch can implement if it needs to protect part of the address space from allocation. Sometimes that can be done by just putting a region in the resource tree, but there are cases where that doesn't work well. For example, x86 BIOS E820 reservations are not related to devices, so they may overlap part of, all of, or more than a device resource, so they may not end up at the correct spot in the resource tree. Acked-by: H. Peter Anvin Signed-off-by: Bjorn Helgaas Signed-off-by: Jesse Barnes --- include/linux/ioport.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/ioport.h b/include/linux/ioport.h index b22790268b64..e9bb22cba764 100644 --- a/include/linux/ioport.h +++ b/include/linux/ioport.h @@ -123,6 +123,7 @@ extern void reserve_region_with_split(struct resource *root, extern struct resource *insert_resource_conflict(struct resource *parent, struct resource *new); extern int insert_resource(struct resource *parent, struct resource *new); extern void insert_resource_expand_to_fit(struct resource *root, struct resource *new); +extern void arch_remove_reservations(struct resource *avail); extern int allocate_resource(struct resource *root, struct resource *new, resource_size_t size, resource_size_t min, resource_size_t max, resource_size_t align, -- cgit v1.2.3 From 4b8fe66300acb2fba8b16d62606e0d30204022fc Mon Sep 17 00:00:00 2001 From: "Dmitry V. Levin" Date: Fri, 17 Dec 2010 12:03:14 -0800 Subject: netlink: fix gcc -Wconversion compilation warning $ cat << EOF | gcc -Wconversion -xc -S -o/dev/null - unsigned f(void) {return NLMSG_HDRLEN;} EOF : In function 'f': :3:26: warning: negative integer implicitly converted to unsigned type Signed-off-by: Dmitry V. Levin Signed-off-by: Kirill A. Shutemov Signed-off-by: David S. Miller --- include/linux/netlink.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/netlink.h b/include/linux/netlink.h index 123566912d73..e2b9e63afa68 100644 --- a/include/linux/netlink.h +++ b/include/linux/netlink.h @@ -70,7 +70,7 @@ struct nlmsghdr { Check NLM_F_EXCL */ -#define NLMSG_ALIGNTO 4 +#define NLMSG_ALIGNTO 4U #define NLMSG_ALIGN(len) ( ((len)+NLMSG_ALIGNTO-1) & ~(NLMSG_ALIGNTO-1) ) #define NLMSG_HDRLEN ((int) NLMSG_ALIGN(sizeof(struct nlmsghdr))) #define NLMSG_LENGTH(len) ((len)+NLMSG_ALIGN(NLMSG_HDRLEN)) -- cgit v1.2.3 From e27fc9641e8ddc8146f8e01f06e5eba2469698de Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Mon, 22 Nov 2010 21:36:11 -0800 Subject: rcu: increase synchronize_sched_expedited() batching The fix in commit #6a0cc49 requires more than three concurrent instances of synchronize_sched_expedited() before batching is possible. This patch uses a ticket-counter-like approach that is also not unrelated to Lai Jiangshan's Ring RCU to allow sharing of expedited grace periods even when there are only two concurrent instances of synchronize_sched_expedited(). This commit builds on Tejun's original posting, which may be found at http://lkml.org/lkml/2010/11/9/204, adding memory barriers, avoiding overflow of signed integers (other than via atomic_t), and fixing the detection of batching. Signed-off-by: Tejun Heo Signed-off-by: Paul E. McKenney --- include/linux/rcupdate.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h index 49e8e16308e1..af5614856285 100644 --- a/include/linux/rcupdate.h +++ b/include/linux/rcupdate.h @@ -47,6 +47,8 @@ extern int rcutorture_runnable; /* for sysctl */ #endif /* #ifdef CONFIG_RCU_TORTURE_TEST */ +#define UINT_CMP_GE(a, b) (UINT_MAX / 2 >= (a) - (b)) +#define UINT_CMP_LT(a, b) (UINT_MAX / 2 < (a) - (b)) #define ULONG_CMP_GE(a, b) (ULONG_MAX / 2 >= (a) - (b)) #define ULONG_CMP_LT(a, b) (ULONG_MAX / 2 < (a) - (b)) -- cgit v1.2.3 From 8a9c1cee26c0ece23b38c45b92b724438878f842 Mon Sep 17 00:00:00 2001 From: Mariusz Kozlowski Date: Wed, 15 Dec 2010 23:11:12 +0100 Subject: rculist: fix borked __list_for_each_rcu() macro This restores parentheses blance. Signed-off-by: Mariusz Kozlowski Signed-off-by: Paul E. McKenney --- include/linux/rculist.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/rculist.h b/include/linux/rculist.h index f31ef61f1c65..70d3ba504d17 100644 --- a/include/linux/rculist.h +++ b/include/linux/rculist.h @@ -244,7 +244,7 @@ static inline void list_splice_init_rcu(struct list_head *list, #define __list_for_each_rcu(pos, head) \ for (pos = rcu_dereference_raw(list_next_rcu(head)); \ pos != (head); \ - pos = rcu_dereference_raw(list_next_rcu((pos))) + pos = rcu_dereference_raw(list_next_rcu(pos))) /** * list_for_each_entry_rcu - iterate over rcu list of given type -- cgit v1.2.3 From 3c2dcf2aed5ea22ecf65a9a871c4963faec421b3 Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Wed, 15 Dec 2010 21:12:15 -0800 Subject: rcu: remove unused __list_for_each_rcu() macro Signed-off-by: Paul E. McKenney --- include/linux/rculist.h | 5 ----- 1 file changed, 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/rculist.h b/include/linux/rculist.h index 70d3ba504d17..2dea94fc4402 100644 --- a/include/linux/rculist.h +++ b/include/linux/rculist.h @@ -241,11 +241,6 @@ static inline void list_splice_init_rcu(struct list_head *list, #define list_first_entry_rcu(ptr, type, member) \ list_entry_rcu((ptr)->next, type, member) -#define __list_for_each_rcu(pos, head) \ - for (pos = rcu_dereference_raw(list_next_rcu(head)); \ - pos != (head); \ - pos = rcu_dereference_raw(list_next_rcu(pos))) - /** * list_for_each_entry_rcu - iterate over rcu list of given type * @pos: the type * to use as a loop cursor. -- cgit v1.2.3 From 7c96aef75949a56ec427fc6a2522dace2af33605 Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Mon, 15 Nov 2010 11:27:01 +1100 Subject: sunrpc: remove xpt_pool The xpt_pool field is only used for reporting BUGs. And it isn't used correctly. In particular, when it is cleared in svc_xprt_received before XPT_BUSY is cleared, there is no guarantee that either the compiler or the CPU might not re-order to two assignments, just setting xpt_pool to NULL after XPT_BUSY is cleared. If a different cpu were running svc_xprt_enqueue at this moment, it might see XPT_BUSY clear and then xpt_pool non-NULL, and so BUG. This could be fixed by calling smp_mb__before_clear_bit() before the clear_bit. However as xpt_pool isn't really used, it seems safest to simply remove xpt_pool. Another alternate would be to change the clear_bit to clear_bit_unlock, and the test_and_set_bit to test_and_set_bit_lock. Signed-off-by: NeilBrown Signed-off-by: J. Bruce Fields --- include/linux/sunrpc/svc_xprt.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/sunrpc/svc_xprt.h b/include/linux/sunrpc/svc_xprt.h index aea0d438e3c7..c8f81da15c7e 100644 --- a/include/linux/sunrpc/svc_xprt.h +++ b/include/linux/sunrpc/svc_xprt.h @@ -63,7 +63,6 @@ struct svc_xprt { #define XPT_LISTENER 11 /* listening endpoint */ #define XPT_CACHE_AUTH 12 /* cache auth info */ - struct svc_pool *xpt_pool; /* current pool iff queued */ struct svc_serv *xpt_server; /* service for transport */ atomic_t xpt_reserved; /* space on outq that is rsvd */ struct mutex xpt_mutex; /* to serialize sending data */ -- cgit v1.2.3 From 04f4ad16b231abbfde34c762697ad035a3af0b5f Mon Sep 17 00:00:00 2001 From: "J. Bruce Fields" Date: Thu, 16 Dec 2010 09:51:13 -0500 Subject: nfsd4: implement secinfo_no_name Implementation of this operation is mandatory for NFSv4.1. Signed-off-by: J. Bruce Fields --- include/linux/nfs4.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nfs4.h b/include/linux/nfs4.h index 4925b22219d2..26afa3021ed6 100644 --- a/include/linux/nfs4.h +++ b/include/linux/nfs4.h @@ -136,6 +136,9 @@ #define SEQ4_STATUS_CB_PATH_DOWN_SESSION 0x00000200 #define SEQ4_STATUS_BACKCHANNEL_FAULT 0x00000400 +#define NFS4_SECINFO_STYLE4_CURRENT_FH 0 +#define NFS4_SECINFO_STYLE4_PARENT 1 + #define NFS4_MAX_UINT64 (~(u64)0) /* An NFS4 sessions server must support at least NFS4_MAX_OPS operations. -- cgit v1.2.3 From 2b7124428561c7c3cfa4a58cc4c6feea53f3148e Mon Sep 17 00:00:00 2001 From: Christoph Lameter Date: Sat, 18 Dec 2010 15:54:04 +0100 Subject: percpu: Generic this_cpu_cmpxchg() and this_cpu_xchg support Generic code to provide new per cpu atomic features this_cpu_cmpxchg this_cpu_xchg Fallback occurs to functions using interrupts disable/enable to ensure correct per cpu atomicity. Fallback to regular cmpxchg and xchg is not possible since per cpu atomic semantics include the guarantee that the current cpus per cpu data is accessed atomically. Use of regular cmpxchg and xchg requires the determination of the address of the per cpu data before regular cmpxchg or xchg which therefore cannot be atomically included in an xchg or cmpxchg without segment override. tj: - Relocated new ops to conform better to the general organization. - This patch contains a trivial comment fix. Signed-off-by: Christoph Lameter Signed-off-by: Tejun Heo --- include/linux/percpu.h | 134 ++++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 133 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/percpu.h b/include/linux/percpu.h index 3484e88d93f8..27c3c6fcfad3 100644 --- a/include/linux/percpu.h +++ b/include/linux/percpu.h @@ -447,6 +447,59 @@ do { \ #define this_cpu_inc_return(pcp) this_cpu_add_return(pcp, 1) #define this_cpu_dec_return(pcp) this_cpu_add_return(pcp, -1) +#define _this_cpu_generic_xchg(pcp, nval) \ +({ typeof(pcp) ret__; \ + preempt_disable(); \ + ret__ = __this_cpu_read(pcp); \ + __this_cpu_write(pcp, nval); \ + preempt_enable(); \ + ret__; \ +}) + +#ifndef this_cpu_xchg +# ifndef this_cpu_xchg_1 +# define this_cpu_xchg_1(pcp, nval) _this_cpu_generic_xchg(pcp, nval) +# endif +# ifndef this_cpu_xchg_2 +# define this_cpu_xchg_2(pcp, nval) _this_cpu_generic_xchg(pcp, nval) +# endif +# ifndef this_cpu_xchg_4 +# define this_cpu_xchg_4(pcp, nval) _this_cpu_generic_xchg(pcp, nval) +# endif +# ifndef this_cpu_xchg_8 +# define this_cpu_xchg_8(pcp, nval) _this_cpu_generic_xchg(pcp, nval) +# endif +# define this_cpu_xchg(pcp, nval) \ + __pcpu_size_call_return2(this_cpu_xchg_, (pcp), nval) +#endif + +#define _this_cpu_generic_cmpxchg(pcp, oval, nval) \ +({ typeof(pcp) ret__; \ + preempt_disable(); \ + ret__ = __this_cpu_read(pcp); \ + if (ret__ == (oval)) \ + __this_cpu_write(pcp, nval); \ + preempt_enable(); \ + ret__; \ +}) + +#ifndef this_cpu_cmpxchg +# ifndef this_cpu_cmpxchg_1 +# define this_cpu_cmpxchg_1(pcp, oval, nval) _this_cpu_generic_cmpxchg(pcp, oval, nval) +# endif +# ifndef this_cpu_cmpxchg_2 +# define this_cpu_cmpxchg_2(pcp, oval, nval) _this_cpu_generic_cmpxchg(pcp, oval, nval) +# endif +# ifndef this_cpu_cmpxchg_4 +# define this_cpu_cmpxchg_4(pcp, oval, nval) _this_cpu_generic_cmpxchg(pcp, oval, nval) +# endif +# ifndef this_cpu_cmpxchg_8 +# define this_cpu_cmpxchg_8(pcp, oval, nval) _this_cpu_generic_cmpxchg(pcp, oval, nval) +# endif +# define this_cpu_cmpxchg(pcp, oval, nval) \ + __pcpu_size_call_return2(this_cpu_cmpxchg_, pcp, oval, nval) +#endif + /* * Generic percpu operations that do not require preemption handling. * Either we do not care about races or the caller has the @@ -600,11 +653,61 @@ do { \ #define __this_cpu_inc_return(pcp) this_cpu_add_return(pcp, 1) #define __this_cpu_dec_return(pcp) this_cpu_add_return(pcp, -1) +#define __this_cpu_generic_xchg(pcp, nval) \ +({ typeof(pcp) ret__; \ + ret__ = __this_cpu_read(pcp); \ + __this_cpu_write(pcp, nval); \ + ret__; \ +}) + +#ifndef __this_cpu_xchg +# ifndef __this_cpu_xchg_1 +# define __this_cpu_xchg_1(pcp, nval) __this_cpu_generic_xchg(pcp, nval) +# endif +# ifndef __this_cpu_xchg_2 +# define __this_cpu_xchg_2(pcp, nval) __this_cpu_generic_xchg(pcp, nval) +# endif +# ifndef __this_cpu_xchg_4 +# define __this_cpu_xchg_4(pcp, nval) __this_cpu_generic_xchg(pcp, nval) +# endif +# ifndef __this_cpu_xchg_8 +# define __this_cpu_xchg_8(pcp, nval) __this_cpu_generic_xchg(pcp, nval) +# endif +# define __this_cpu_xchg(pcp, nval) \ + __pcpu_size_call_return2(__this_cpu_xchg_, (pcp), nval) +#endif + +#define __this_cpu_generic_cmpxchg(pcp, oval, nval) \ +({ \ + typeof(pcp) ret__; \ + ret__ = __this_cpu_read(pcp); \ + if (ret__ == (oval)) \ + __this_cpu_write(pcp, nval); \ + ret__; \ +}) + +#ifndef __this_cpu_cmpxchg +# ifndef __this_cpu_cmpxchg_1 +# define __this_cpu_cmpxchg_1(pcp, oval, nval) __this_cpu_generic_cmpxchg(pcp, oval, nval) +# endif +# ifndef __this_cpu_cmpxchg_2 +# define __this_cpu_cmpxchg_2(pcp, oval, nval) __this_cpu_generic_cmpxchg(pcp, oval, nval) +# endif +# ifndef __this_cpu_cmpxchg_4 +# define __this_cpu_cmpxchg_4(pcp, oval, nval) __this_cpu_generic_cmpxchg(pcp, oval, nval) +# endif +# ifndef __this_cpu_cmpxchg_8 +# define __this_cpu_cmpxchg_8(pcp, oval, nval) __this_cpu_generic_cmpxchg(pcp, oval, nval) +# endif +# define __this_cpu_cmpxchg(pcp, oval, nval) \ + __pcpu_size_call_return2(__this_cpu_cmpxchg_, pcp, oval, nval) +#endif + /* * IRQ safe versions of the per cpu RMW operations. Note that these operations * are *not* safe against modification of the same variable from another * processors (which one gets when using regular atomic operations) - . They are guaranteed to be atomic vs. local interrupts and + * They are guaranteed to be atomic vs. local interrupts and * preemption only. */ #define irqsafe_cpu_generic_to_op(pcp, val, op) \ @@ -691,4 +794,33 @@ do { \ # define irqsafe_cpu_xor(pcp, val) __pcpu_size_call(irqsafe_cpu_xor_, (val)) #endif +#define irqsafe_cpu_generic_cmpxchg(pcp, oval, nval) \ +({ \ + typeof(pcp) ret__; \ + unsigned long flags; \ + local_irq_save(flags); \ + ret__ = __this_cpu_read(pcp); \ + if (ret__ == (oval)) \ + __this_cpu_write(pcp, nval); \ + local_irq_restore(flags); \ + ret__; \ +}) + +#ifndef irqsafe_cpu_cmpxchg +# ifndef irqsafe_cpu_cmpxchg_1 +# define irqsafe_cpu_cmpxchg_1(pcp, oval, nval) irqsafe_cpu_generic_cmpxchg(pcp, oval, nval) +# endif +# ifndef irqsafe_cpu_cmpxchg_2 +# define irqsafe_cpu_cmpxchg_2(pcp, oval, nval) irqsafe_cpu_generic_cmpxchg(pcp, oval, nval) +# endif +# ifndef irqsafe_cpu_cmpxchg_4 +# define irqsafe_cpu_cmpxchg_4(pcp, oval, nval) irqsafe_cpu_generic_cmpxchg(pcp, oval, nval) +# endif +# ifndef irqsafe_cpu_cmpxchg_8 +# define irqsafe_cpu_cmpxchg_8(pcp, oval, nval) irqsafe_cpu_generic_cmpxchg(pcp, oval, nval) +# endif +# define irqsafe_cpu_cmpxchg(pcp, oval, nval) \ + __pcpu_size_call_return2(irqsafe_cpu_cmpxchg_, (pcp), oval, nval) +#endif + #endif /* __LINUX_PERCPU_H */ -- cgit v1.2.3 From c6eda6c5eeb357ff231121619fb49d2bc0605faf Mon Sep 17 00:00:00 2001 From: Sundar Iyer Date: Mon, 13 Dec 2010 09:33:12 +0530 Subject: mfd/tc35892: rename tc35892 header to tc3589x Rename the header file to include further variants within the same mfd core driver Acked-by: Samuel Ortiz Signed-off-by: Sundar Iyer Signed-off-by: Linus Walleij --- include/linux/mfd/tc35892.h | 136 -------------------------------------------- include/linux/mfd/tc3589x.h | 136 ++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 136 insertions(+), 136 deletions(-) delete mode 100644 include/linux/mfd/tc35892.h create mode 100644 include/linux/mfd/tc3589x.h (limited to 'include/linux') diff --git a/include/linux/mfd/tc35892.h b/include/linux/mfd/tc35892.h deleted file mode 100644 index eff3094ca84e..000000000000 --- a/include/linux/mfd/tc35892.h +++ /dev/null @@ -1,136 +0,0 @@ -/* - * Copyright (C) ST-Ericsson SA 2010 - * - * License Terms: GNU General Public License, version 2 - */ - -#ifndef __LINUX_MFD_TC35892_H -#define __LINUX_MFD_TC35892_H - -#include - -#define TC35892_RSTCTRL_IRQRST (1 << 4) -#define TC35892_RSTCTRL_TIMRST (1 << 3) -#define TC35892_RSTCTRL_ROTRST (1 << 2) -#define TC35892_RSTCTRL_KBDRST (1 << 1) -#define TC35892_RSTCTRL_GPIRST (1 << 0) - -#define TC35892_IRQST 0x91 - -#define TC35892_MANFCODE_MAGIC 0x03 -#define TC35892_MANFCODE 0x80 -#define TC35892_VERSION 0x81 -#define TC35892_IOCFG 0xA7 - -#define TC35892_CLKMODE 0x88 -#define TC35892_CLKCFG 0x89 -#define TC35892_CLKEN 0x8A - -#define TC35892_RSTCTRL 0x82 -#define TC35892_EXTRSTN 0x83 -#define TC35892_RSTINTCLR 0x84 - -#define TC35892_GPIOIS0 0xC9 -#define TC35892_GPIOIS1 0xCA -#define TC35892_GPIOIS2 0xCB -#define TC35892_GPIOIBE0 0xCC -#define TC35892_GPIOIBE1 0xCD -#define TC35892_GPIOIBE2 0xCE -#define TC35892_GPIOIEV0 0xCF -#define TC35892_GPIOIEV1 0xD0 -#define TC35892_GPIOIEV2 0xD1 -#define TC35892_GPIOIE0 0xD2 -#define TC35892_GPIOIE1 0xD3 -#define TC35892_GPIOIE2 0xD4 -#define TC35892_GPIORIS0 0xD6 -#define TC35892_GPIORIS1 0xD7 -#define TC35892_GPIORIS2 0xD8 -#define TC35892_GPIOMIS0 0xD9 -#define TC35892_GPIOMIS1 0xDA -#define TC35892_GPIOMIS2 0xDB -#define TC35892_GPIOIC0 0xDC -#define TC35892_GPIOIC1 0xDD -#define TC35892_GPIOIC2 0xDE - -#define TC35892_GPIODATA0 0xC0 -#define TC35892_GPIOMASK0 0xc1 -#define TC35892_GPIODATA1 0xC2 -#define TC35892_GPIOMASK1 0xc3 -#define TC35892_GPIODATA2 0xC4 -#define TC35892_GPIOMASK2 0xC5 - -#define TC35892_GPIODIR0 0xC6 -#define TC35892_GPIODIR1 0xC7 -#define TC35892_GPIODIR2 0xC8 - -#define TC35892_GPIOSYNC0 0xE6 -#define TC35892_GPIOSYNC1 0xE7 -#define TC35892_GPIOSYNC2 0xE8 - -#define TC35892_GPIOWAKE0 0xE9 -#define TC35892_GPIOWAKE1 0xEA -#define TC35892_GPIOWAKE2 0xEB - -#define TC35892_GPIOODM0 0xE0 -#define TC35892_GPIOODE0 0xE1 -#define TC35892_GPIOODM1 0xE2 -#define TC35892_GPIOODE1 0xE3 -#define TC35892_GPIOODM2 0xE4 -#define TC35892_GPIOODE2 0xE5 - -#define TC35892_INT_GPIIRQ 0 -#define TC35892_INT_TI0IRQ 1 -#define TC35892_INT_TI1IRQ 2 -#define TC35892_INT_TI2IRQ 3 -#define TC35892_INT_ROTIRQ 5 -#define TC35892_INT_KBDIRQ 6 -#define TC35892_INT_PORIRQ 7 - -#define TC35892_NR_INTERNAL_IRQS 8 -#define TC35892_INT_GPIO(x) (TC35892_NR_INTERNAL_IRQS + (x)) - -struct tc35892 { - struct mutex lock; - struct device *dev; - struct i2c_client *i2c; - - int irq_base; - int num_gpio; - struct tc35892_platform_data *pdata; -}; - -extern int tc35892_reg_write(struct tc35892 *tc35892, u8 reg, u8 data); -extern int tc35892_reg_read(struct tc35892 *tc35892, u8 reg); -extern int tc35892_block_read(struct tc35892 *tc35892, u8 reg, u8 length, - u8 *values); -extern int tc35892_block_write(struct tc35892 *tc35892, u8 reg, u8 length, - const u8 *values); -extern int tc35892_set_bits(struct tc35892 *tc35892, u8 reg, u8 mask, u8 val); - -/** - * struct tc35892_gpio_platform_data - TC35892 GPIO platform data - * @gpio_base: first gpio number assigned to TC35892. A maximum of - * %TC35892_NR_GPIOS GPIOs will be allocated. - * @setup: callback for board-specific initialization - * @remove: callback for board-specific teardown - */ -struct tc35892_gpio_platform_data { - int gpio_base; - void (*setup)(struct tc35892 *tc35892, unsigned gpio_base); - void (*remove)(struct tc35892 *tc35892, unsigned gpio_base); -}; - -/** - * struct tc35892_platform_data - TC35892 platform data - * @irq_base: base IRQ number. %TC35892_NR_IRQS irqs will be used. - * @gpio: GPIO-specific platform data - */ -struct tc35892_platform_data { - int irq_base; - struct tc35892_gpio_platform_data *gpio; -}; - -#define TC35892_NR_GPIOS 24 -#define TC35892_NR_IRQS TC35892_INT_GPIO(TC35892_NR_GPIOS) - -#endif diff --git a/include/linux/mfd/tc3589x.h b/include/linux/mfd/tc3589x.h new file mode 100644 index 000000000000..eff3094ca84e --- /dev/null +++ b/include/linux/mfd/tc3589x.h @@ -0,0 +1,136 @@ +/* + * Copyright (C) ST-Ericsson SA 2010 + * + * License Terms: GNU General Public License, version 2 + */ + +#ifndef __LINUX_MFD_TC35892_H +#define __LINUX_MFD_TC35892_H + +#include + +#define TC35892_RSTCTRL_IRQRST (1 << 4) +#define TC35892_RSTCTRL_TIMRST (1 << 3) +#define TC35892_RSTCTRL_ROTRST (1 << 2) +#define TC35892_RSTCTRL_KBDRST (1 << 1) +#define TC35892_RSTCTRL_GPIRST (1 << 0) + +#define TC35892_IRQST 0x91 + +#define TC35892_MANFCODE_MAGIC 0x03 +#define TC35892_MANFCODE 0x80 +#define TC35892_VERSION 0x81 +#define TC35892_IOCFG 0xA7 + +#define TC35892_CLKMODE 0x88 +#define TC35892_CLKCFG 0x89 +#define TC35892_CLKEN 0x8A + +#define TC35892_RSTCTRL 0x82 +#define TC35892_EXTRSTN 0x83 +#define TC35892_RSTINTCLR 0x84 + +#define TC35892_GPIOIS0 0xC9 +#define TC35892_GPIOIS1 0xCA +#define TC35892_GPIOIS2 0xCB +#define TC35892_GPIOIBE0 0xCC +#define TC35892_GPIOIBE1 0xCD +#define TC35892_GPIOIBE2 0xCE +#define TC35892_GPIOIEV0 0xCF +#define TC35892_GPIOIEV1 0xD0 +#define TC35892_GPIOIEV2 0xD1 +#define TC35892_GPIOIE0 0xD2 +#define TC35892_GPIOIE1 0xD3 +#define TC35892_GPIOIE2 0xD4 +#define TC35892_GPIORIS0 0xD6 +#define TC35892_GPIORIS1 0xD7 +#define TC35892_GPIORIS2 0xD8 +#define TC35892_GPIOMIS0 0xD9 +#define TC35892_GPIOMIS1 0xDA +#define TC35892_GPIOMIS2 0xDB +#define TC35892_GPIOIC0 0xDC +#define TC35892_GPIOIC1 0xDD +#define TC35892_GPIOIC2 0xDE + +#define TC35892_GPIODATA0 0xC0 +#define TC35892_GPIOMASK0 0xc1 +#define TC35892_GPIODATA1 0xC2 +#define TC35892_GPIOMASK1 0xc3 +#define TC35892_GPIODATA2 0xC4 +#define TC35892_GPIOMASK2 0xC5 + +#define TC35892_GPIODIR0 0xC6 +#define TC35892_GPIODIR1 0xC7 +#define TC35892_GPIODIR2 0xC8 + +#define TC35892_GPIOSYNC0 0xE6 +#define TC35892_GPIOSYNC1 0xE7 +#define TC35892_GPIOSYNC2 0xE8 + +#define TC35892_GPIOWAKE0 0xE9 +#define TC35892_GPIOWAKE1 0xEA +#define TC35892_GPIOWAKE2 0xEB + +#define TC35892_GPIOODM0 0xE0 +#define TC35892_GPIOODE0 0xE1 +#define TC35892_GPIOODM1 0xE2 +#define TC35892_GPIOODE1 0xE3 +#define TC35892_GPIOODM2 0xE4 +#define TC35892_GPIOODE2 0xE5 + +#define TC35892_INT_GPIIRQ 0 +#define TC35892_INT_TI0IRQ 1 +#define TC35892_INT_TI1IRQ 2 +#define TC35892_INT_TI2IRQ 3 +#define TC35892_INT_ROTIRQ 5 +#define TC35892_INT_KBDIRQ 6 +#define TC35892_INT_PORIRQ 7 + +#define TC35892_NR_INTERNAL_IRQS 8 +#define TC35892_INT_GPIO(x) (TC35892_NR_INTERNAL_IRQS + (x)) + +struct tc35892 { + struct mutex lock; + struct device *dev; + struct i2c_client *i2c; + + int irq_base; + int num_gpio; + struct tc35892_platform_data *pdata; +}; + +extern int tc35892_reg_write(struct tc35892 *tc35892, u8 reg, u8 data); +extern int tc35892_reg_read(struct tc35892 *tc35892, u8 reg); +extern int tc35892_block_read(struct tc35892 *tc35892, u8 reg, u8 length, + u8 *values); +extern int tc35892_block_write(struct tc35892 *tc35892, u8 reg, u8 length, + const u8 *values); +extern int tc35892_set_bits(struct tc35892 *tc35892, u8 reg, u8 mask, u8 val); + +/** + * struct tc35892_gpio_platform_data - TC35892 GPIO platform data + * @gpio_base: first gpio number assigned to TC35892. A maximum of + * %TC35892_NR_GPIOS GPIOs will be allocated. + * @setup: callback for board-specific initialization + * @remove: callback for board-specific teardown + */ +struct tc35892_gpio_platform_data { + int gpio_base; + void (*setup)(struct tc35892 *tc35892, unsigned gpio_base); + void (*remove)(struct tc35892 *tc35892, unsigned gpio_base); +}; + +/** + * struct tc35892_platform_data - TC35892 platform data + * @irq_base: base IRQ number. %TC35892_NR_IRQS irqs will be used. + * @gpio: GPIO-specific platform data + */ +struct tc35892_platform_data { + int irq_base; + struct tc35892_gpio_platform_data *gpio; +}; + +#define TC35892_NR_GPIOS 24 +#define TC35892_NR_IRQS TC35892_INT_GPIO(TC35892_NR_GPIOS) + +#endif -- cgit v1.2.3 From 20406ebff4a298e6e3abbc1717a90bb3e55dc820 Mon Sep 17 00:00:00 2001 From: Sundar Iyer Date: Mon, 13 Dec 2010 09:33:14 +0530 Subject: mfd/tc3589x: rename tc35892 structs/registers to tc359x Most of the register layout, client IRQ numbers on the TC35892 is shared also by other variants. Make this generic as tc3589x Acked-by: Samuel Ortiz Signed-off-by: Sundar Iyer Signed-off-by: Linus Walleij --- include/linux/mfd/tc3589x.h | 202 ++++++++++++++++++++++---------------------- 1 file changed, 101 insertions(+), 101 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/tc3589x.h b/include/linux/mfd/tc3589x.h index eff3094ca84e..ea1918896f5b 100644 --- a/include/linux/mfd/tc3589x.h +++ b/include/linux/mfd/tc3589x.h @@ -4,133 +4,133 @@ * License Terms: GNU General Public License, version 2 */ -#ifndef __LINUX_MFD_TC35892_H -#define __LINUX_MFD_TC35892_H +#ifndef __LINUX_MFD_TC3589x_H +#define __LINUX_MFD_TC3589x_H #include -#define TC35892_RSTCTRL_IRQRST (1 << 4) -#define TC35892_RSTCTRL_TIMRST (1 << 3) -#define TC35892_RSTCTRL_ROTRST (1 << 2) -#define TC35892_RSTCTRL_KBDRST (1 << 1) -#define TC35892_RSTCTRL_GPIRST (1 << 0) - -#define TC35892_IRQST 0x91 - -#define TC35892_MANFCODE_MAGIC 0x03 -#define TC35892_MANFCODE 0x80 -#define TC35892_VERSION 0x81 -#define TC35892_IOCFG 0xA7 - -#define TC35892_CLKMODE 0x88 -#define TC35892_CLKCFG 0x89 -#define TC35892_CLKEN 0x8A - -#define TC35892_RSTCTRL 0x82 -#define TC35892_EXTRSTN 0x83 -#define TC35892_RSTINTCLR 0x84 - -#define TC35892_GPIOIS0 0xC9 -#define TC35892_GPIOIS1 0xCA -#define TC35892_GPIOIS2 0xCB -#define TC35892_GPIOIBE0 0xCC -#define TC35892_GPIOIBE1 0xCD -#define TC35892_GPIOIBE2 0xCE -#define TC35892_GPIOIEV0 0xCF -#define TC35892_GPIOIEV1 0xD0 -#define TC35892_GPIOIEV2 0xD1 -#define TC35892_GPIOIE0 0xD2 -#define TC35892_GPIOIE1 0xD3 -#define TC35892_GPIOIE2 0xD4 -#define TC35892_GPIORIS0 0xD6 -#define TC35892_GPIORIS1 0xD7 -#define TC35892_GPIORIS2 0xD8 -#define TC35892_GPIOMIS0 0xD9 -#define TC35892_GPIOMIS1 0xDA -#define TC35892_GPIOMIS2 0xDB -#define TC35892_GPIOIC0 0xDC -#define TC35892_GPIOIC1 0xDD -#define TC35892_GPIOIC2 0xDE - -#define TC35892_GPIODATA0 0xC0 -#define TC35892_GPIOMASK0 0xc1 -#define TC35892_GPIODATA1 0xC2 -#define TC35892_GPIOMASK1 0xc3 -#define TC35892_GPIODATA2 0xC4 -#define TC35892_GPIOMASK2 0xC5 - -#define TC35892_GPIODIR0 0xC6 -#define TC35892_GPIODIR1 0xC7 -#define TC35892_GPIODIR2 0xC8 - -#define TC35892_GPIOSYNC0 0xE6 -#define TC35892_GPIOSYNC1 0xE7 -#define TC35892_GPIOSYNC2 0xE8 - -#define TC35892_GPIOWAKE0 0xE9 -#define TC35892_GPIOWAKE1 0xEA -#define TC35892_GPIOWAKE2 0xEB - -#define TC35892_GPIOODM0 0xE0 -#define TC35892_GPIOODE0 0xE1 -#define TC35892_GPIOODM1 0xE2 -#define TC35892_GPIOODE1 0xE3 -#define TC35892_GPIOODM2 0xE4 -#define TC35892_GPIOODE2 0xE5 - -#define TC35892_INT_GPIIRQ 0 -#define TC35892_INT_TI0IRQ 1 -#define TC35892_INT_TI1IRQ 2 -#define TC35892_INT_TI2IRQ 3 -#define TC35892_INT_ROTIRQ 5 -#define TC35892_INT_KBDIRQ 6 -#define TC35892_INT_PORIRQ 7 - -#define TC35892_NR_INTERNAL_IRQS 8 -#define TC35892_INT_GPIO(x) (TC35892_NR_INTERNAL_IRQS + (x)) - -struct tc35892 { +#define TC3589x_RSTCTRL_IRQRST (1 << 4) +#define TC3589x_RSTCTRL_TIMRST (1 << 3) +#define TC3589x_RSTCTRL_ROTRST (1 << 2) +#define TC3589x_RSTCTRL_KBDRST (1 << 1) +#define TC3589x_RSTCTRL_GPIRST (1 << 0) + +#define TC3589x_IRQST 0x91 + +#define TC3589x_MANFCODE_MAGIC 0x03 +#define TC3589x_MANFCODE 0x80 +#define TC3589x_VERSION 0x81 +#define TC3589x_IOCFG 0xA7 + +#define TC3589x_CLKMODE 0x88 +#define TC3589x_CLKCFG 0x89 +#define TC3589x_CLKEN 0x8A + +#define TC3589x_RSTCTRL 0x82 +#define TC3589x_EXTRSTN 0x83 +#define TC3589x_RSTINTCLR 0x84 + +#define TC3589x_GPIOIS0 0xC9 +#define TC3589x_GPIOIS1 0xCA +#define TC3589x_GPIOIS2 0xCB +#define TC3589x_GPIOIBE0 0xCC +#define TC3589x_GPIOIBE1 0xCD +#define TC3589x_GPIOIBE2 0xCE +#define TC3589x_GPIOIEV0 0xCF +#define TC3589x_GPIOIEV1 0xD0 +#define TC3589x_GPIOIEV2 0xD1 +#define TC3589x_GPIOIE0 0xD2 +#define TC3589x_GPIOIE1 0xD3 +#define TC3589x_GPIOIE2 0xD4 +#define TC3589x_GPIORIS0 0xD6 +#define TC3589x_GPIORIS1 0xD7 +#define TC3589x_GPIORIS2 0xD8 +#define TC3589x_GPIOMIS0 0xD9 +#define TC3589x_GPIOMIS1 0xDA +#define TC3589x_GPIOMIS2 0xDB +#define TC3589x_GPIOIC0 0xDC +#define TC3589x_GPIOIC1 0xDD +#define TC3589x_GPIOIC2 0xDE + +#define TC3589x_GPIODATA0 0xC0 +#define TC3589x_GPIOMASK0 0xc1 +#define TC3589x_GPIODATA1 0xC2 +#define TC3589x_GPIOMASK1 0xc3 +#define TC3589x_GPIODATA2 0xC4 +#define TC3589x_GPIOMASK2 0xC5 + +#define TC3589x_GPIODIR0 0xC6 +#define TC3589x_GPIODIR1 0xC7 +#define TC3589x_GPIODIR2 0xC8 + +#define TC3589x_GPIOSYNC0 0xE6 +#define TC3589x_GPIOSYNC1 0xE7 +#define TC3589x_GPIOSYNC2 0xE8 + +#define TC3589x_GPIOWAKE0 0xE9 +#define TC3589x_GPIOWAKE1 0xEA +#define TC3589x_GPIOWAKE2 0xEB + +#define TC3589x_GPIOODM0 0xE0 +#define TC3589x_GPIOODE0 0xE1 +#define TC3589x_GPIOODM1 0xE2 +#define TC3589x_GPIOODE1 0xE3 +#define TC3589x_GPIOODM2 0xE4 +#define TC3589x_GPIOODE2 0xE5 + +#define TC3589x_INT_GPIIRQ 0 +#define TC3589x_INT_TI0IRQ 1 +#define TC3589x_INT_TI1IRQ 2 +#define TC3589x_INT_TI2IRQ 3 +#define TC3589x_INT_ROTIRQ 5 +#define TC3589x_INT_KBDIRQ 6 +#define TC3589x_INT_PORIRQ 7 + +#define TC3589x_NR_INTERNAL_IRQS 8 +#define TC3589x_INT_GPIO(x) (TC3589x_NR_INTERNAL_IRQS + (x)) + +struct tc3589x { struct mutex lock; struct device *dev; struct i2c_client *i2c; int irq_base; int num_gpio; - struct tc35892_platform_data *pdata; + struct tc3589x_platform_data *pdata; }; -extern int tc35892_reg_write(struct tc35892 *tc35892, u8 reg, u8 data); -extern int tc35892_reg_read(struct tc35892 *tc35892, u8 reg); -extern int tc35892_block_read(struct tc35892 *tc35892, u8 reg, u8 length, +extern int tc3589x_reg_write(struct tc3589x *tc3589x, u8 reg, u8 data); +extern int tc3589x_reg_read(struct tc3589x *tc3589x, u8 reg); +extern int tc3589x_block_read(struct tc3589x *tc3589x, u8 reg, u8 length, u8 *values); -extern int tc35892_block_write(struct tc35892 *tc35892, u8 reg, u8 length, +extern int tc3589x_block_write(struct tc3589x *tc3589x, u8 reg, u8 length, const u8 *values); -extern int tc35892_set_bits(struct tc35892 *tc35892, u8 reg, u8 mask, u8 val); +extern int tc3589x_set_bits(struct tc3589x *tc3589x, u8 reg, u8 mask, u8 val); /** - * struct tc35892_gpio_platform_data - TC35892 GPIO platform data - * @gpio_base: first gpio number assigned to TC35892. A maximum of - * %TC35892_NR_GPIOS GPIOs will be allocated. + * struct tc3589x_gpio_platform_data - TC3589x GPIO platform data + * @gpio_base: first gpio number assigned to TC3589x. A maximum of + * %TC3589x_NR_GPIOS GPIOs will be allocated. * @setup: callback for board-specific initialization * @remove: callback for board-specific teardown */ -struct tc35892_gpio_platform_data { +struct tc3589x_gpio_platform_data { int gpio_base; - void (*setup)(struct tc35892 *tc35892, unsigned gpio_base); - void (*remove)(struct tc35892 *tc35892, unsigned gpio_base); + void (*setup)(struct tc3589x *tc3589x, unsigned gpio_base); + void (*remove)(struct tc3589x *tc3589x, unsigned gpio_base); }; /** - * struct tc35892_platform_data - TC35892 platform data - * @irq_base: base IRQ number. %TC35892_NR_IRQS irqs will be used. + * struct tc3589x_platform_data - TC3589x platform data + * @irq_base: base IRQ number. %TC3589x_NR_IRQS irqs will be used. * @gpio: GPIO-specific platform data */ -struct tc35892_platform_data { +struct tc3589x_platform_data { int irq_base; - struct tc35892_gpio_platform_data *gpio; + struct tc3589x_gpio_platform_data *gpio; }; -#define TC35892_NR_GPIOS 24 -#define TC35892_NR_IRQS TC35892_INT_GPIO(TC35892_NR_GPIOS) +#define TC3589x_NR_GPIOS 24 +#define TC3589x_NR_IRQS TC3589x_INT_GPIO(TC3589x_NR_GPIOS) #endif -- cgit v1.2.3 From 611b7590afa6e6c6b0942b1d3efef17fbb348ef5 Mon Sep 17 00:00:00 2001 From: Sundar Iyer Date: Mon, 13 Dec 2010 09:33:15 +0530 Subject: mfd/tc3589x: add block identifier for multiple child devices Add block identifier to be able to add multiple mfd clients to the mfd core Acked-by: Samuel Ortiz Signed-off-by: Sundar Iyer Signed-off-by: Linus Walleij --- include/linux/mfd/tc3589x.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/tc3589x.h b/include/linux/mfd/tc3589x.h index ea1918896f5b..da00958b12d9 100644 --- a/include/linux/mfd/tc3589x.h +++ b/include/linux/mfd/tc3589x.h @@ -9,6 +9,11 @@ #include +enum tx3589x_block { + TC3589x_BLOCK_GPIO = 1 << 0, + TC3589x_BLOCK_KEYPAD = 1 << 1, +}; + #define TC3589x_RSTCTRL_IRQRST (1 << 4) #define TC3589x_RSTCTRL_TIMRST (1 << 3) #define TC3589x_RSTCTRL_ROTRST (1 << 2) @@ -122,10 +127,12 @@ struct tc3589x_gpio_platform_data { /** * struct tc3589x_platform_data - TC3589x platform data + * @block: bitmask of blocks to enable (use TC3589x_BLOCK_*) * @irq_base: base IRQ number. %TC3589x_NR_IRQS irqs will be used. * @gpio: GPIO-specific platform data */ struct tc3589x_platform_data { + unsigned int block; int irq_base; struct tc3589x_gpio_platform_data *gpio; }; -- cgit v1.2.3 From 85b7720039fc000b561c20fe2aaa3b54cddae4a7 Mon Sep 17 00:00:00 2001 From: Henrik Rydberg Date: Sat, 18 Dec 2010 20:51:13 +0100 Subject: Input: introduce device properties Today, userspace sets up an input device based on the data it emits. This is not always enough; a tablet and a touchscreen may emit exactly the same data, for instance, but the former should be set up with a pointer whereas the latter does not need to. Recently, a new type of touchpad has emerged where the buttons are under the pad, which changes logic without changing the emitted data. This patch introduces a new ioctl, EVIOCGPROP, which enables user access to a set of device properties useful during setup. The properties are given as a bitmap in the same fashion as the event types, and are also made available via sysfs, uevent and /proc/bus/input/devices. Acked-by: Ping Cheng Acked-by: Chase Douglas Acked-by: Dmitry Torokhov Signed-off-by: Henrik Rydberg --- include/linux/input.h | 16 ++++++++++++++++ include/linux/uinput.h | 1 + 2 files changed, 17 insertions(+) (limited to 'include/linux') diff --git a/include/linux/input.h b/include/linux/input.h index b3a1e02080c0..8d9c76cd3c43 100644 --- a/include/linux/input.h +++ b/include/linux/input.h @@ -91,6 +91,7 @@ struct input_keymap_entry { #define EVIOCGNAME(len) _IOC(_IOC_READ, 'E', 0x06, len) /* get device name */ #define EVIOCGPHYS(len) _IOC(_IOC_READ, 'E', 0x07, len) /* get physical location */ #define EVIOCGUNIQ(len) _IOC(_IOC_READ, 'E', 0x08, len) /* get unique identifier */ +#define EVIOCGPROP(len) _IOC(_IOC_READ, 'E', 0x09, len) /* get device properties */ #define EVIOCGKEY(len) _IOC(_IOC_READ, 'E', 0x18, len) /* get global key state */ #define EVIOCGLED(len) _IOC(_IOC_READ, 'E', 0x19, len) /* get all LEDs */ @@ -107,6 +108,18 @@ struct input_keymap_entry { #define EVIOCGRAB _IOW('E', 0x90, int) /* Grab/Release device */ +/* + * Device properties and quirks + */ + +#define INPUT_PROP_POINTER 0x00 /* needs a pointer */ +#define INPUT_PROP_DIRECT 0x01 /* direct input devices */ +#define INPUT_PROP_BUTTONPAD 0x02 /* has button(s) under pad */ +#define INPUT_PROP_SEMI_MT 0x03 /* touch rectangle only */ + +#define INPUT_PROP_MAX 0x1f +#define INPUT_PROP_CNT (INPUT_PROP_MAX + 1) + /* * Event types */ @@ -1090,6 +1103,7 @@ struct ff_effect { * @phys: physical path to the device in the system hierarchy * @uniq: unique identification code for the device (if device has it) * @id: id of the device (struct input_id) + * @propbit: bitmap of device properties and quirks * @evbit: bitmap of types of events supported by the device (EV_KEY, * EV_REL, etc.) * @keybit: bitmap of keys/buttons this device has @@ -1173,6 +1187,8 @@ struct input_dev { const char *uniq; struct input_id id; + unsigned long propbit[BITS_TO_LONGS(INPUT_PROP_CNT)]; + unsigned long evbit[BITS_TO_LONGS(EV_CNT)]; unsigned long keybit[BITS_TO_LONGS(KEY_CNT)]; unsigned long relbit[BITS_TO_LONGS(REL_CNT)]; diff --git a/include/linux/uinput.h b/include/linux/uinput.h index 05f7fed2b173..d28c726ede4f 100644 --- a/include/linux/uinput.h +++ b/include/linux/uinput.h @@ -104,6 +104,7 @@ struct uinput_ff_erase { #define UI_SET_FFBIT _IOW(UINPUT_IOCTL_BASE, 107, int) #define UI_SET_PHYS _IOW(UINPUT_IOCTL_BASE, 108, char*) #define UI_SET_SWBIT _IOW(UINPUT_IOCTL_BASE, 109, int) +#define UI_SET_PROPBIT _IOW(UINPUT_IOCTL_BASE, 110, int) #define UI_BEGIN_FF_UPLOAD _IOWR(UINPUT_IOCTL_BASE, 200, struct uinput_ff_upload) #define UI_END_FF_UPLOAD _IOW(UINPUT_IOCTL_BASE, 201, struct uinput_ff_upload) -- cgit v1.2.3 From b8da46d3d55807037b58f14621a0949f18053bde Mon Sep 17 00:00:00 2001 From: Nicolas Pitre Date: Mon, 20 Dec 2010 00:29:32 -0500 Subject: clarify a usage constraint for cnt32_to_63() The cnt32_to_63 algorithm relies on proper counter data evaluation ordering to work properly. This was missing from the provided documentation. Let's augment the documentation with the missing usage constraint and fix the only instance that got it wrong. Signed-off-by: Nicolas Pitre Acked-by: David Howells Signed-off-by: Linus Torvalds --- include/linux/cnt32_to_63.h | 20 +++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/cnt32_to_63.h b/include/linux/cnt32_to_63.h index 7605fdd1eb65..e3d8bf26e5eb 100644 --- a/include/linux/cnt32_to_63.h +++ b/include/linux/cnt32_to_63.h @@ -61,13 +61,31 @@ union cnt32_to_63 { * * 2) this code must not be preempted for a duration longer than the * 32-bit counter half period minus the longest period between two - * calls to this code. + * calls to this code; * * Those requirements ensure proper update to the state bit in memory. * This is usually not a problem in practice, but if it is then a kernel * timer should be scheduled to manage for this code to be executed often * enough. * + * And finally: + * + * 3) the cnt_lo argument must be seen as a globally incrementing value, + * meaning that it should be a direct reference to the counter data which + * can be evaluated according to a specific ordering within the macro, + * and not the result of a previous evaluation stored in a variable. + * + * For example, this is wrong: + * + * u32 partial = get_hw_count(); + * u64 full = cnt32_to_63(partial); + * return full; + * + * This is fine: + * + * u64 full = cnt32_to_63(get_hw_count()); + * return full; + * * Note that the top bit (bit 63) in the returned value should be considered * as garbage. It is not cleared here because callers are likely to use a * multiplier on the returned value which can get rid of the top bit -- cgit v1.2.3 From 24bdd9f4c9af75b33b438d60381a67626de0128d Mon Sep 17 00:00:00 2001 From: Javier Cardona Date: Thu, 16 Dec 2010 17:37:48 -0800 Subject: mac80211: Rename mesh_params to mesh_config to prepare for mesh_setup Mesh parameters can be to setup a mesh or to configure it. This patch renames the ambiguous name mesh_params to mesh_config in preparation for mesh_setup. Signed-off-by: Javier Cardona Signed-off-by: John W. Linville --- include/linux/nl80211.h | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index 7483a89cee8f..11a1de67b618 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -172,10 +172,10 @@ * to the specified ISO/IEC 3166-1 alpha2 country code. The core will * store this as a valid request and then query userspace for it. * - * @NL80211_CMD_GET_MESH_PARAMS: Get mesh networking properties for the + * @NL80211_CMD_GET_MESH_CONFIG: Get mesh networking properties for the * interface identified by %NL80211_ATTR_IFINDEX * - * @NL80211_CMD_SET_MESH_PARAMS: Set mesh networking properties for the + * @NL80211_CMD_SET_MESH_CONFIG: Set mesh networking properties for the * interface identified by %NL80211_ATTR_IFINDEX * * @NL80211_CMD_SET_MGMT_EXTRA_IE: Set extra IEs for management frames. The @@ -448,8 +448,8 @@ enum nl80211_commands { NL80211_CMD_SET_REG, NL80211_CMD_REQ_SET_REG, - NL80211_CMD_GET_MESH_PARAMS, - NL80211_CMD_SET_MESH_PARAMS, + NL80211_CMD_GET_MESH_CONFIG, + NL80211_CMD_SET_MESH_CONFIG, NL80211_CMD_SET_MGMT_EXTRA_IE /* reserved; not used */, @@ -538,6 +538,10 @@ enum nl80211_commands { #define NL80211_CMD_DISASSOCIATE NL80211_CMD_DISASSOCIATE #define NL80211_CMD_REG_BEACON_HINT NL80211_CMD_REG_BEACON_HINT +/* source-level API compatibility */ +#define NL80211_CMD_GET_MESH_PARAMS NL80211_CMD_GET_MESH_CONFIG +#define NL80211_CMD_SET_MESH_PARAMS NL80211_CMD_SET_MESH_CONFIG + /** * enum nl80211_attrs - nl80211 netlink attributes * @@ -922,7 +926,7 @@ enum nl80211_attrs { NL80211_ATTR_REG_ALPHA2, NL80211_ATTR_REG_RULES, - NL80211_ATTR_MESH_PARAMS, + NL80211_ATTR_MESH_CONFIG, NL80211_ATTR_BSS_BASIC_RATES, @@ -1058,6 +1062,7 @@ enum nl80211_attrs { /* source-level API compatibility */ #define NL80211_ATTR_SCAN_GENERATION NL80211_ATTR_GENERATION +#define NL80211_ATTR_MESH_PARAMS NL80211_ATTR_MESH_CONFIG /* * Allow user space programs to use #ifdef on new attributes by defining them -- cgit v1.2.3 From c80d545da3f7c0e534ccd4a780f322f80a92cff1 Mon Sep 17 00:00:00 2001 From: Javier Cardona Date: Thu, 16 Dec 2010 17:37:49 -0800 Subject: mac80211: Let userspace enable and configure vendor specific path selection. Userspace will now be allowed to toggle between the default path selection algorithm (HWMP, implemented in the kernel), and a vendor specific alternative. Also in the same patch, allow userspace to add information elements to mesh beacons. This is accordance with the Extensible Path Selection Framework specified in version 7.0 of the 802.11s draft. Signed-off-by: Javier Cardona Signed-off-by: John W. Linville --- include/linux/ieee80211.h | 25 +++++++++++++++++++++++++ include/linux/nl80211.h | 47 +++++++++++++++++++++++++++++++++++++++++++---- 2 files changed, 68 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h index 7f2354534242..cd681681d211 100644 --- a/include/linux/ieee80211.h +++ b/include/linux/ieee80211.h @@ -1291,6 +1291,31 @@ enum ieee80211_key_len { WLAN_KEY_LEN_AES_CMAC = 16, }; +/** + * enum - mesh path selection protocol identifier + * + * @IEEE80211_PATH_PROTOCOL_HWMP: the default path selection protocol + * @IEEE80211_PATH_PROTOCOL_VENDOR: a vendor specific protocol that will + * be specified in a vendor specific information element + */ +enum { + IEEE80211_PATH_PROTOCOL_HWMP = 0, + IEEE80211_PATH_PROTOCOL_VENDOR = 255, +}; + +/** + * enum - mesh path selection metric identifier + * + * @IEEE80211_PATH_METRIC_AIRTIME: the default path selection metric + * @IEEE80211_PATH_METRIC_VENDOR: a vendor specific metric that will be + * specified in a vendor specific information element + */ +enum { + IEEE80211_PATH_METRIC_AIRTIME = 0, + IEEE80211_PATH_METRIC_VENDOR = 255, +}; + + /* * IEEE 802.11-2007 7.3.2.9 Country information element * diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index 11a1de67b618..69eaccac78c4 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -872,6 +872,9 @@ enum nl80211_commands { * attributes, specifying what a key should be set as default as. * See &enum nl80211_key_default_types. * + * @NL80211_ATTR_MESH_SETUP: Optional mesh setup parameters. These cannot be + * changed once the mesh is active. + * * @NL80211_ATTR_MAX: highest attribute number currently defined * @__NL80211_ATTR_AFTER_LAST: internal use */ @@ -1054,6 +1057,8 @@ enum nl80211_attrs { NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION, + NL80211_ATTR_MESH_SETUP, + /* add attributes here, update the policy in nl80211.c */ __NL80211_ATTR_AFTER_LAST, @@ -1564,7 +1569,8 @@ enum nl80211_mntr_flags { /** * enum nl80211_meshconf_params - mesh configuration parameters * - * Mesh configuration parameters + * Mesh configuration parameters. These can be changed while the mesh is + * active. * * @__NL80211_MESHCONF_INVALID: internal use * @@ -1587,9 +1593,6 @@ enum nl80211_mntr_flags { * @NL80211_MESHCONF_TTL: specifies the value of TTL field set at a source mesh * point. * - * @NL80211_MESHCONF_ELEMENT_TTL: specifies the value of TTL field set at a - * source mesh point for path selection elements. - * * @NL80211_MESHCONF_AUTO_OPEN_PLINKS: whether we should automatically * open peer links when we detect compatible mesh peers. * @@ -1616,6 +1619,9 @@ enum nl80211_mntr_flags { * * @NL80211_MESHCONF_ROOTMODE: whether root mode is enabled or not * + * @NL80211_MESHCONF_ELEMENT_TTL: specifies the value of TTL field set at a + * source mesh point for path selection elements. + * * @NL80211_MESHCONF_ATTR_MAX: highest possible mesh configuration attribute * * @__NL80211_MESHCONF_ATTR_AFTER_LAST: internal use @@ -1643,6 +1649,39 @@ enum nl80211_meshconf_params { NL80211_MESHCONF_ATTR_MAX = __NL80211_MESHCONF_ATTR_AFTER_LAST - 1 }; +/** + * enum nl80211_mesh_setup_params - mesh setup parameters + * + * Mesh setup parameters. These are used to start/join a mesh and cannot be + * changed while the mesh is active. + * + * @__NL80211_MESH_SETUP_INVALID: Internal use + * + * @NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL: Enable this option to use a + * vendor specific path selection algorithm or disable it to use the default + * HWMP. + * + * @NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC: Enable this option to use a + * vendor specific path metric or disable it to use the default Airtime + * metric. + * + * @NL80211_MESH_SETUP_VENDOR_PATH_SEL_IE: A vendor specific information + * element that vendors will use to identify the path selection methods and + * metrics in use. + * + * @__NL80211_MESH_SETUP_ATTR_AFTER_LAST: Internal use + */ +enum nl80211_mesh_setup_params { + __NL80211_MESH_SETUP_INVALID, + NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL, + NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC, + NL80211_MESH_SETUP_VENDOR_PATH_SEL_IE, + + /* keep last */ + __NL80211_MESH_SETUP_ATTR_AFTER_LAST, + NL80211_MESH_SETUP_ATTR_MAX = __NL80211_MESH_SETUP_ATTR_AFTER_LAST - 1 +}; + /** * enum nl80211_txq_attr - TX queue parameter attributes * @__NL80211_TXQ_ATTR_INVALID: Attribute number 0 is reserved -- cgit v1.2.3 From 39fd5de4472b7b222c6cec78d72b069133f694e4 Mon Sep 17 00:00:00 2001 From: Bruno Randolf Date: Thu, 16 Dec 2010 11:30:28 +0900 Subject: nl80211: Export available antennas Export the information which antennas are available for configuration as TX or RX antennas via nl80211. Signed-off-by: Bruno Randolf Signed-off-by: John W. Linville --- include/linux/nl80211.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index 69eaccac78c4..2b89b712565b 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -858,6 +858,12 @@ enum nl80211_commands { * the hardware should not be configured to receive on this antenna. * For a more detailed descripton see @NL80211_ATTR_WIPHY_ANTENNA_TX. * + * @NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX: Bitmap of antennas which are available + * for configuration as TX antennas via the above parameters. + * + * @NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX: Bitmap of antennas which are available + * for configuration as RX antennas via the above parameters. + * * @NL80211_ATTR_MCAST_RATE: Multicast tx rate (in 100 kbps) for IBSS * * @NL80211_ATTR_OFFCHANNEL_TX_OK: For management frame TX, the frame may be @@ -1059,6 +1065,9 @@ enum nl80211_attrs { NL80211_ATTR_MESH_SETUP, + NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX, + NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX, + /* add attributes here, update the policy in nl80211.c */ __NL80211_ATTR_AFTER_LAST, -- cgit v1.2.3 From 61ad5394590c5c5338ab4ec50553d809a9996d50 Mon Sep 17 00:00:00 2001 From: Javier Cardona Date: Thu, 16 Dec 2010 17:23:34 -0800 Subject: mac80211: Remove unused third address from mesh address extension header. The Mesh Control header only includes 0, 1 or 2 addresses. If there is one address, it should be interpreted as Address 4. If there are 2, they are interpreted as Addresses 5 and 6 (Address 4 being the 4th address in the 802.11 header). The address extension used to hold up to 3 addresses instead of the current 2. I'm not sure which draft version changed this, but it is very unlikely that it will change again given the state of the approval process of this draft. See section 7.1.3.6.3 in current draft (8.0). Also, note that the extra address that I'm removing was not being used, so this change has no effect on over-the-air frame formats. But I thought I better remove it before someone does start using it. Signed-off-by: Javier Cardona Signed-off-by: John W. Linville --- include/linux/ieee80211.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h index cd681681d211..6042228954a7 100644 --- a/include/linux/ieee80211.h +++ b/include/linux/ieee80211.h @@ -536,7 +536,6 @@ struct ieee80211s_hdr { __le32 seqnum; u8 eaddr1[6]; u8 eaddr2[6]; - u8 eaddr3[6]; } __attribute__ ((packed)); /* Mesh flags */ -- cgit v1.2.3 From c66ae9bb4dcaac78cc5e30d0ce7ff2bf3dcb48d9 Mon Sep 17 00:00:00 2001 From: Vasily Khoruzhick Date: Mon, 13 Dec 2010 12:26:21 +0200 Subject: s3c_adc_battery: Add gpio_inverted field to pdata Add support for inverted gpio_charge_finished values. This change is necessary for H1940 support. Signed-off-by: Vasily Khoruzhick Signed-off-by: Anton Vorontsov --- include/linux/s3c_adc_battery.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/s3c_adc_battery.h b/include/linux/s3c_adc_battery.h index dbce22faa660..fbe58b7e63eb 100644 --- a/include/linux/s3c_adc_battery.h +++ b/include/linux/s3c_adc_battery.h @@ -14,6 +14,7 @@ struct s3c_adc_bat_pdata { void (*disable_charger)(void); int gpio_charge_finished; + int gpio_inverted; const struct s3c_adc_bat_thresh *lut_noac; unsigned int lut_noac_cnt; -- cgit v1.2.3 From 4f32e9b1f812fd6c00cc85a127583fefbdedaedc Mon Sep 17 00:00:00 2001 From: Yong Zhang Date: Wed, 22 Dec 2010 10:27:53 +0100 Subject: kthread_work: make lockdep happy spinlock in kthread_worker and wait_queue_head in kthread_work both should be lockdep sensible, so change the interface to make it suiltable for CONFIG_LOCKDEP. tj: comment update Reported-by: Nicolas Signed-off-by: Yong Zhang Signed-off-by: Andy Walls Tested-by: Andy Walls Cc: Tejun Heo Cc: Andrew Morton Signed-off-by: Tejun Heo --- include/linux/kthread.h | 45 +++++++++++++++++++++++++++++++++++---------- 1 file changed, 35 insertions(+), 10 deletions(-) (limited to 'include/linux') diff --git a/include/linux/kthread.h b/include/linux/kthread.h index 685ea65eb803..ce0775aa64c3 100644 --- a/include/linux/kthread.h +++ b/include/linux/kthread.h @@ -81,16 +81,41 @@ struct kthread_work { #define DEFINE_KTHREAD_WORK(work, fn) \ struct kthread_work work = KTHREAD_WORK_INIT(work, fn) -static inline void init_kthread_worker(struct kthread_worker *worker) -{ - *worker = (struct kthread_worker)KTHREAD_WORKER_INIT(*worker); -} - -static inline void init_kthread_work(struct kthread_work *work, - kthread_work_func_t fn) -{ - *work = (struct kthread_work)KTHREAD_WORK_INIT(*work, fn); -} +/* + * kthread_worker.lock and kthread_work.done need their own lockdep class + * keys if they are defined on stack with lockdep enabled. Use the + * following macros when defining them on stack. + */ +#ifdef CONFIG_LOCKDEP +# define KTHREAD_WORKER_INIT_ONSTACK(worker) \ + ({ init_kthread_worker(&worker); worker; }) +# define DEFINE_KTHREAD_WORKER_ONSTACK(worker) \ + struct kthread_worker worker = KTHREAD_WORKER_INIT_ONSTACK(worker) +# define KTHREAD_WORK_INIT_ONSTACK(work, fn) \ + ({ init_kthread_work((&work), fn); work; }) +# define DEFINE_KTHREAD_WORK_ONSTACK(work, fn) \ + struct kthread_work work = KTHREAD_WORK_INIT_ONSTACK(work, fn) +#else +# define DEFINE_KTHREAD_WORKER_ONSTACK(worker) DEFINE_KTHREAD_WORKER(worker) +# define DEFINE_KTHREAD_WORK_ONSTACK(work, fn) DEFINE_KTHREAD_WORK(work, fn) +#endif + +extern void __init_kthread_worker(struct kthread_worker *worker, + const char *name, struct lock_class_key *key); + +#define init_kthread_worker(worker) \ + do { \ + static struct lock_class_key __key; \ + __init_kthread_worker((worker), "("#worker")->lock", &__key); \ + } while (0) + +#define init_kthread_work(work, fn) \ + do { \ + memset((work), 0, sizeof(struct kthread_work)); \ + INIT_LIST_HEAD(&(work)->node); \ + (work)->func = (fn); \ + init_waitqueue_head(&(work)->done); \ + } while (0) int kthread_worker_fn(void *worker_ptr); -- cgit v1.2.3 From da1f026b532ce944d74461497dc6d8c16456466e Mon Sep 17 00:00:00 2001 From: Janusz Krzysztofik Date: Mon, 20 Dec 2010 21:09:22 +0000 Subject: Keyboard: omap-keypad: use matrix_keypad.h Most keypad drivers make use of the defined macros, structures and inline functions. Convert omap-keypad driver to use those as well, as suggested by a compile time warning, hardcoded into the OMAP . Created against linux-2.6.37-rc5. Tested on Amstrad Delta. Compile tested with omap1_defconfig and omap2plus_defconfig shrinked to board-h4. Signed-off-by: Janusz Krzysztofik Reviewed-by: Aaro Koskinen Acked-by: Dmitry Torokhov Signed-off-by: Tony Lindgren --- include/linux/input/matrix_keypad.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/input/matrix_keypad.h b/include/linux/input/matrix_keypad.h index 80352ad6581a..697474691749 100644 --- a/include/linux/input/matrix_keypad.h +++ b/include/linux/input/matrix_keypad.h @@ -9,7 +9,7 @@ #define KEY(row, col, val) ((((row) & (MATRIX_MAX_ROWS - 1)) << 24) |\ (((col) & (MATRIX_MAX_COLS - 1)) << 16) |\ - (val & 0xffff)) + ((val) & 0xffff)) #define KEY_ROW(k) (((k) >> 24) & 0xff) #define KEY_COL(k) (((k) >> 16) & 0xff) -- cgit v1.2.3 From 4a7863cc2eb5f9804f1c4e9156619a801cd7f14f Mon Sep 17 00:00:00 2001 From: Don Zickus Date: Wed, 22 Dec 2010 14:00:03 -0500 Subject: x86, nmi_watchdog: Remove ARCH_HAS_NMI_WATCHDOG and rely on CONFIG_HARDLOCKUP_DETECTOR The x86 arch has shifted its use of the nmi_watchdog from a local implementation to the global one provide by kernel/watchdog.c. This shift has caused a whole bunch of compile problems under different config options. I attempt to simplify things with the patch below. In order to simplify things, I had to come to terms with the meaning of two terms ARCH_HAS_NMI_WATCHDOG and CONFIG_HARDLOCKUP_DETECTOR. Basically they mean the same thing, the former on a local level and the latter on a global level. With the old x86 nmi watchdog gone, there is no need to rely on defining the ARCH_HAS_NMI_WATCHDOG variable because it doesn't make sense any more. x86 will now use the global implementation. The changes below do a few things. First it changes the few places that relied on ARCH_HAS_NMI_WATCHDOG to use CONFIG_X86_LOCAL_APIC (the former was an alias for the latter anyway, so nothing unusual here). Those pieces of code were relying more on local apic functionality the nmi watchdog functionality, so the change should make sense. Second, I removed the x86 implementation of touch_nmi_watchdog(). It isn't need now, instead x86 will rely on kernel/watchdog.c's implementation. Third, I removed the #define ARCH_HAS_NMI_WATCHDOG itself from x86. And tweaked the include/linux/nmi.h file to tell users to look for an externally defined touch_nmi_watchdog in the case of ARCH_HAS_NMI_WATCHDOG _or_ CONFIG_HARDLOCKUP_DETECTOR. This changes removes some of the ugliness in that file. Finally, I added a Kconfig dependency for CONFIG_HARDLOCKUP_DETECTOR that said you can't have ARCH_HAS_NMI_WATCHDOG _and_ CONFIG_HARDLOCKUP_DETECTOR. You can only have one nmi_watchdog. Tested with ARCH=i386: allnoconfig, defconfig, allyesconfig, (various broken configs) ARCH=x86_64: allnoconfig, defconfig, allyesconfig, (various broken configs) Hopefully, after this patch I won't get any more compile broken emails. :-) v3: changed a couple of 'linux/nmi.h' -> 'asm/nmi.h' to pick-up correct function prototypes when CONFIG_HARDLOCKUP_DETECTOR is not set. Signed-off-by: Don Zickus Cc: Peter Zijlstra Cc: fweisbec@gmail.com LKML-Reference: <1293044403-14117-1-git-send-email-dzickus@redhat.com> Signed-off-by: Ingo Molnar --- include/linux/nmi.h | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/nmi.h b/include/linux/nmi.h index 17ccf44e7dcb..c536f8545f74 100644 --- a/include/linux/nmi.h +++ b/include/linux/nmi.h @@ -14,18 +14,14 @@ * may be used to reset the timeout - for code which intentionally * disables interrupts for a long time. This call is stateless. */ -#ifdef ARCH_HAS_NMI_WATCHDOG +#if defined(ARCH_HAS_NMI_WATCHDOG) || defined(CONFIG_HARDLOCKUP_DETECTOR) #include extern void touch_nmi_watchdog(void); #else -#ifndef CONFIG_HARDLOCKUP_DETECTOR static inline void touch_nmi_watchdog(void) { touch_softlockup_watchdog(); } -#else -extern void touch_nmi_watchdog(void); -#endif #endif /* -- cgit v1.2.3 From 4e06fd14d5fa78826397c891654a37e5a36ee827 Mon Sep 17 00:00:00 2001 From: Will Newton Date: Tue, 21 Dec 2010 17:24:29 -0800 Subject: include/linux/unaligned: pack the whole struct rather than just the field The current packed struct implementation of unaligned access adds the packed attribute only to the field within the unaligned struct rather than to the struct as a whole. This is not sufficient to enforce proper behaviour on architectures with a default struct alignment of more than one byte. For example, the current implementation of __get_unaligned_cpu16 when compiled for arm with gcc -O1 -mstructure-size-boundary=32 assumes the struct is on a 4 byte boundary so performs the load of the 16bit packed field as if it were on a 4 byte boundary: __get_unaligned_cpu16: ldrh r0, [r0, #0] bx lr Moving the packed attribute to the struct rather than the field causes the proper unaligned access code to be generated: __get_unaligned_cpu16: ldrb r3, [r0, #0] @ zero_extendqisi2 ldrb r0, [r0, #1] @ zero_extendqisi2 orr r0, r3, r0, asl #8 bx lr Signed-off-by: Will Newton Cc: Arnd Bergmann Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/unaligned/packed_struct.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/unaligned/packed_struct.h b/include/linux/unaligned/packed_struct.h index 2498bb9fe002..c9a6abd972a1 100644 --- a/include/linux/unaligned/packed_struct.h +++ b/include/linux/unaligned/packed_struct.h @@ -3,9 +3,9 @@ #include -struct __una_u16 { u16 x __attribute__((packed)); }; -struct __una_u32 { u32 x __attribute__((packed)); }; -struct __una_u64 { u64 x __attribute__((packed)); }; +struct __una_u16 { u16 x; } __attribute__((packed)); +struct __una_u32 { u32 x; } __attribute__((packed)); +struct __una_u64 { u64 x; } __attribute__((packed)); static inline u16 __get_unaligned_cpu16(const void *p) { -- cgit v1.2.3 From 4be2c95d1f7706ca0e74499f2bd118e1cee19669 Mon Sep 17 00:00:00 2001 From: Jeff Mahoney Date: Tue, 21 Dec 2010 17:24:30 -0800 Subject: taskstats: pad taskstats netlink response for aligment issues on ia64 The taskstats structure is internally aligned on 8 byte boundaries but the layout of the aggregrate reply, with two NLA headers and the pid (each 4 bytes), actually force the entire structure to be unaligned. This causes the kernel to issue unaligned access warnings on some architectures like ia64. Unfortunately, some software out there doesn't properly unroll the NLA packet and assumes that the start of the taskstats structure will always be 20 bytes from the start of the netlink payload. Aligning the start of the taskstats structure breaks this software, which we don't want. So, for now the alignment only happens on architectures that require it and those users will have to update to fixed versions of those packages. Space is reserved in the packet only when needed. This ifdef should be removed in several years e.g. 2012 once we can be confident that fixed versions are installed on most systems. We add the padding before the aggregate since the aggregate is already a defined type. Commit 85893120 ("delayacct: align to 8 byte boundary on 64-bit systems") previously addressed the alignment issues by padding out the pid field. This was supposed to be a compatible change but the circumstances described above mean that it wasn't. This patch backs out that change, since it was a hack, and introduces a new NULL attribute type to provide the padding. Padding the response with 4 bytes avoids allocating an aligned taskstats structure and copying it back. Since the structure weighs in at 328 bytes, it's too big to do it on the stack. Signed-off-by: Jeff Mahoney Reported-by: Brian Rogers Cc: Jeff Mahoney Cc: Guillaume Chazarain Cc: Balbir Singh Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/taskstats.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/taskstats.h b/include/linux/taskstats.h index 341dddb55090..2466e550a41d 100644 --- a/include/linux/taskstats.h +++ b/include/linux/taskstats.h @@ -33,7 +33,7 @@ */ -#define TASKSTATS_VERSION 7 +#define TASKSTATS_VERSION 8 #define TS_COMM_LEN 32 /* should be >= TASK_COMM_LEN * in linux/sched.h */ @@ -188,6 +188,7 @@ enum { TASKSTATS_TYPE_STATS, /* taskstats structure */ TASKSTATS_TYPE_AGGR_PID, /* contains pid + stats */ TASKSTATS_TYPE_AGGR_TGID, /* contains tgid + stats */ + TASKSTATS_TYPE_NULL, /* contains nothing */ __TASKSTATS_TYPE_MAX, }; -- cgit v1.2.3 From 00aaaef9a51a1a25c5d6d52ce510772f149a0eb0 Mon Sep 17 00:00:00 2001 From: Sheng Yang Date: Thu, 11 Nov 2010 15:46:54 +0800 Subject: PCI: MSI: Move MSI-X entry definition to pci_regs.h Then it can be used by others. Reviewed-by: Hidetoshi Seto Reviewed-by: Matthew Wilcox Signed-off-by: Sheng Yang Signed-off-by: Jesse Barnes --- include/linux/pci_regs.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pci_regs.h b/include/linux/pci_regs.h index af83076c31a6..b21d33e4bc2a 100644 --- a/include/linux/pci_regs.h +++ b/include/linux/pci_regs.h @@ -309,6 +309,13 @@ #define PCI_MSIX_PBA 8 #define PCI_MSIX_FLAGS_BIRMASK (7 << 0) +/* MSI-X entry's format */ +#define PCI_MSIX_ENTRY_SIZE 16 +#define PCI_MSIX_ENTRY_LOWER_ADDR 0 +#define PCI_MSIX_ENTRY_UPPER_ADDR 4 +#define PCI_MSIX_ENTRY_DATA 8 +#define PCI_MSIX_ENTRY_VECTOR_CTRL 12 + /* CompactPCI Hotswap Register */ #define PCI_CHSWP_CSR 2 /* Control and Status Register */ -- cgit v1.2.3 From 8d805286968811223cca002134ba3d81244d5313 Mon Sep 17 00:00:00 2001 From: Sheng Yang Date: Thu, 11 Nov 2010 15:46:55 +0800 Subject: PCI: Add mask bit definition for MSI-X table Then we can use it instead of magic number 1. Reviewed-by: Hidetoshi Seto Cc: Matthew Wilcox Signed-off-by: Sheng Yang Signed-off-by: Jesse Barnes --- include/linux/pci_regs.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/pci_regs.h b/include/linux/pci_regs.h index b21d33e4bc2a..d4f2c80a6c3e 100644 --- a/include/linux/pci_regs.h +++ b/include/linux/pci_regs.h @@ -315,6 +315,7 @@ #define PCI_MSIX_ENTRY_UPPER_ADDR 4 #define PCI_MSIX_ENTRY_DATA 8 #define PCI_MSIX_ENTRY_VECTOR_CTRL 12 +#define PCI_MSIX_ENTRY_CTRL_MASKBIT 1 /* CompactPCI Hotswap Register */ -- cgit v1.2.3 From 2f671e2dbff6eb5ef4e2600adbec550c13b8fe72 Mon Sep 17 00:00:00 2001 From: Matthew Garrett Date: Mon, 6 Dec 2010 14:00:56 -0500 Subject: PCI: Disable ASPM if BIOS asks us to We currently refuse to touch the ASPM registers if the BIOS tells us that ASPM isn't supported. This can cause problems if the BIOS has (for any reason) enabled ASPM on some devices anyway. Change the code such that we explicitly clear ASPM if the FADT indicates that ASPM isn't supported, and make sure we tidy up appropriately on device removal in order to deal with the hotplug case. If ASPM is disabled because the BIOS doesn't hand over control then we won't touch the registers. Signed-off-by: Matthew Garrett Signed-off-by: Jesse Barnes --- include/linux/pci-aspm.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/pci-aspm.h b/include/linux/pci-aspm.h index 91ba0b338b47..ce6810512c66 100644 --- a/include/linux/pci-aspm.h +++ b/include/linux/pci-aspm.h @@ -27,6 +27,7 @@ extern void pcie_aspm_init_link_state(struct pci_dev *pdev); extern void pcie_aspm_exit_link_state(struct pci_dev *pdev); extern void pcie_aspm_pm_state_change(struct pci_dev *pdev); extern void pci_disable_link_state(struct pci_dev *pdev, int state); +extern void pcie_clear_aspm(void); extern void pcie_no_aspm(void); #else static inline void pcie_aspm_init_link_state(struct pci_dev *pdev) @@ -41,7 +42,9 @@ static inline void pcie_aspm_pm_state_change(struct pci_dev *pdev) static inline void pci_disable_link_state(struct pci_dev *pdev, int state) { } - +static inline void pcie_clear_aspm(void) +{ +} static inline void pcie_no_aspm(void) { } -- cgit v1.2.3 From 1d3c16a818e992c199844954d95c17fd7ce6cbba Mon Sep 17 00:00:00 2001 From: Jon Mason Date: Tue, 30 Nov 2010 17:43:26 -0600 Subject: PCI: make pci_restore_state return void pci_restore_state only ever returns 0, thus there is no benefit in having it return any value. Also, a large majority of the callers do not check the return code of pci_restore_state. Make the pci_restore_state a void return and avoid the overhead. Acked-by: Mauro Carvalho Chehab Signed-off-by: Jon Mason Signed-off-by: Jesse Barnes --- include/linux/pci.h | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/pci.h b/include/linux/pci.h index 7454408c41b6..63cbadce337e 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -806,7 +806,7 @@ size_t pci_get_rom_size(struct pci_dev *pdev, void __iomem *rom, size_t size); /* Power management related routines */ int pci_save_state(struct pci_dev *dev); -int pci_restore_state(struct pci_dev *dev); +void pci_restore_state(struct pci_dev *dev); int __pci_complete_power_transition(struct pci_dev *dev, pci_power_t state); int pci_set_power_state(struct pci_dev *dev, pci_power_t state); pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state); @@ -1168,10 +1168,8 @@ static inline int pci_save_state(struct pci_dev *dev) return 0; } -static inline int pci_restore_state(struct pci_dev *dev) -{ - return 0; -} +static inline void pci_restore_state(struct pci_dev *dev) +{ } static inline int pci_set_power_state(struct pci_dev *dev, pci_power_t state) { -- cgit v1.2.3 From 9b444b36fee16d2aaae9cc91ce594ecb15d922a9 Mon Sep 17 00:00:00 2001 From: Seth Heasley Date: Wed, 17 Nov 2010 12:12:08 -0700 Subject: x86/PCI: irq and pci_ids patch for Intel Patsburg This patch adds an additional LPC Controller DeviceID for the Intel Patsburg PCH. Signed-off-by: Seth Heasley Signed-off-by: Jesse Barnes --- include/linux/pci_ids.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h index cb845c16ad7d..d830106827fd 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -2468,7 +2468,8 @@ #define PCI_DEVICE_ID_INTEL_COUGARPOINT_LPC_MIN 0x1c41 #define PCI_DEVICE_ID_INTEL_COUGARPOINT_LPC_MAX 0x1c5f #define PCI_DEVICE_ID_INTEL_PATSBURG_SMBUS 0x1d22 -#define PCI_DEVICE_ID_INTEL_PATSBURG_LPC 0x1d40 +#define PCI_DEVICE_ID_INTEL_PATSBURG_LPC_0 0x1d40 +#define PCI_DEVICE_ID_INTEL_PATSBURG_LPC_1 0x1d41 #define PCI_DEVICE_ID_INTEL_82801AA_0 0x2410 #define PCI_DEVICE_ID_INTEL_82801AA_1 0x2411 #define PCI_DEVICE_ID_INTEL_82801AA_3 0x2413 -- cgit v1.2.3 From fe31e69740eddc7316071ed5165fed6703c8cd12 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Sun, 19 Dec 2010 15:57:16 +0100 Subject: PCI/PCIe: Clear Root PME Status bits early during system resume I noticed that PCI Express PMEs don't work on my Toshiba Portege R500 after the system has been woken up from a sleep state by a PME (through Wake-on-LAN). After some investigation it turned out that the BIOS didn't clear the Root PME Status bit in the root port that received the wakeup PME and since the Requester ID was also set in the port's Root Status register, any subsequent PMEs didn't trigger interrupts. This problem can be avoided by clearing the Root PME Status bits in all PCI Express root ports during early resume. For this purpose, add an early resume routine to the PCIe port driver and make this driver be always registered, even if pci_ports_disable is set (in which case the driver's only function is to provide the early resume callback). Signed-off-by: Rafael J. Wysocki Signed-off-by: Jesse Barnes --- include/linux/pci_regs.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pci_regs.h b/include/linux/pci_regs.h index d4f2c80a6c3e..5b7e6b1ba54f 100644 --- a/include/linux/pci_regs.h +++ b/include/linux/pci_regs.h @@ -504,6 +504,8 @@ #define PCI_EXP_RTCTL_CRSSVE 0x10 /* CRS Software Visibility Enable */ #define PCI_EXP_RTCAP 30 /* Root Capabilities */ #define PCI_EXP_RTSTA 32 /* Root Status */ +#define PCI_EXP_RTSTA_PME 0x10000 /* PME status */ +#define PCI_EXP_RTSTA_PENDING 0x20000 /* PME pending */ #define PCI_EXP_DEVCAP2 36 /* Device Capabilities 2 */ #define PCI_EXP_DEVCAP2_ARI 0x20 /* Alternative Routing-ID */ #define PCI_EXP_DEVCTL2 40 /* Device Control 2 */ -- cgit v1.2.3 From 0131d8973c8b9bd9d40fee8fae24eab24821efdb Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Wed, 1 Dec 2010 10:54:46 +0100 Subject: of/address: use proper endianess in get_flags This patch changes u32 to __be32 for all "ranges", "prop" and "addr" and such. Those variables are pointing to the device tree which contains integers in big endian format. Most functions are doing it right because of_read_number() is doing the right thing for them. of_bus_isa_get_flags(), of_bus_pci_get_flags() and of_bus_isa_map() were accessing the data directly and were doing it wrong. Signed-off-by: Sebastian Andrzej Siewior Acked-by: Benjamin Herrenschmidt Signed-off-by: Grant Likely --- include/linux/of_address.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/of_address.h b/include/linux/of_address.h index 8aea06f0564c..2feda6ee6140 100644 --- a/include/linux/of_address.h +++ b/include/linux/of_address.h @@ -3,7 +3,7 @@ #include #include -extern u64 of_translate_address(struct device_node *np, const u32 *addr); +extern u64 of_translate_address(struct device_node *np, const __be32 *addr); extern int of_address_to_resource(struct device_node *dev, int index, struct resource *r); extern void __iomem *of_iomap(struct device_node *device, int index); @@ -21,7 +21,7 @@ static inline unsigned long pci_address_to_pio(phys_addr_t addr) { return -1; } #endif #ifdef CONFIG_PCI -extern const u32 *of_get_pci_address(struct device_node *dev, int bar_no, +extern const __be32 *of_get_pci_address(struct device_node *dev, int bar_no, u64 *size, unsigned int *flags); extern int of_pci_address_to_resource(struct device_node *dev, int bar, struct resource *r); @@ -32,7 +32,7 @@ static inline int of_pci_address_to_resource(struct device_node *dev, int bar, return -ENOSYS; } -static inline const u32 *of_get_pci_address(struct device_node *dev, +static inline const __be32 *of_get_pci_address(struct device_node *dev, int bar_no, u64 *size, unsigned int *flags) { return NULL; -- cgit v1.2.3 From 7063c0d942a1af2993531fbe52b4c74c1db818c4 Mon Sep 17 00:00:00 2001 From: Feng Tang Date: Fri, 24 Dec 2010 13:59:11 +0800 Subject: spi/dw_spi: add DMA support dw_spi driver in upstream only supports PIO mode, and this patch will support it to cowork with the Designware dma controller used on Intel Moorestown platform, at the same time it provides a general framework to support dw_spi core to cowork with dma controllers on other platforms It has been tested with a Option GTM501L 3G modem and Infenion 60x60 modem. To use DMA mode, DMA controller 2 of Moorestown has to be enabled Also change the dma interface suggested by Linus Walleij. Acked-by: Linus Walleij Signed-off-by: Feng Tang [Typo fix and renames to match intel_mid_dma renaming] Signed-off-by: Vinod Koul Signed-off-by: Alan Cox Signed-off-by: Grant Likely --- include/linux/spi/dw_spi.h | 24 +++++++++++++++++++----- 1 file changed, 19 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/spi/dw_spi.h b/include/linux/spi/dw_spi.h index c91302f3a257..6cd10f6ad472 100644 --- a/include/linux/spi/dw_spi.h +++ b/include/linux/spi/dw_spi.h @@ -1,5 +1,6 @@ #ifndef DW_SPI_HEADER_H #define DW_SPI_HEADER_H + #include /* Bit fields in CTRLR0 */ @@ -82,6 +83,13 @@ struct dw_spi_reg { though only low 16 bits matters */ } __packed; +struct dw_spi; +struct dw_spi_dma_ops { + int (*dma_init)(struct dw_spi *dws); + void (*dma_exit)(struct dw_spi *dws); + int (*dma_transfer)(struct dw_spi *dws, int cs_change); +}; + struct dw_spi { struct spi_master *master; struct spi_device *cur_dev; @@ -136,13 +144,15 @@ struct dw_spi { /* Dma info */ int dma_inited; struct dma_chan *txchan; + struct scatterlist tx_sgl; struct dma_chan *rxchan; - int txdma_done; - int rxdma_done; - u64 tx_param; - u64 rx_param; + struct scatterlist rx_sgl; + int dma_chan_done; struct device *dma_dev; - dma_addr_t dma_addr; + dma_addr_t dma_addr; /* phy address of the Data register */ + struct dw_spi_dma_ops *dma_ops; + void *dma_priv; /* platform relate info */ + struct pci_dev *dmac; /* Bus interface info */ void *priv; @@ -216,4 +226,8 @@ extern int dw_spi_add_host(struct dw_spi *dws); extern void dw_spi_remove_host(struct dw_spi *dws); extern int dw_spi_suspend_host(struct dw_spi *dws); extern int dw_spi_resume_host(struct dw_spi *dws); +extern void dw_spi_xfer_done(struct dw_spi *dws); + +/* platform related setup */ +extern int dw_spi_mid_init(struct dw_spi *dws); /* Intel MID platforms */ #endif /* DW_SPI_HEADER_H */ -- cgit v1.2.3 From c7b61de5b7b17f0df34dc7d2f8b9576f8bd36fce Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Wed, 1 Dec 2010 00:14:42 +0100 Subject: PM / Runtime: Add synchronous runtime interface for interrupt handlers (v3) This patch (as1431c) makes the synchronous runtime-PM interface suitable for use in interrupt handlers. Subsystems can call the new pm_runtime_irq_safe() function to tell the PM core that a device's runtime_suspend and runtime_resume callbacks should be invoked with interrupts disabled and the spinlock held. This permits the pm_runtime_get_sync() and the new pm_runtime_put_sync_suspend() routines to be called from within interrupt handlers. When a device is declared irq-safe in this way, the PM core increments the parent's usage count, so the parent will never be runtime suspended. This prevents difficult situations in which an irq-safe device can't resume because it is forced to wait for its non-irq-safe parent. Signed-off-by: Alan Stern Signed-off-by: Rafael J. Wysocki --- include/linux/pm.h | 1 + include/linux/pm_runtime.h | 7 +++++++ 2 files changed, 8 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pm.h b/include/linux/pm.h index 40f3f45702ba..61f2066e6852 100644 --- a/include/linux/pm.h +++ b/include/linux/pm.h @@ -486,6 +486,7 @@ struct dev_pm_info { unsigned int run_wake:1; unsigned int runtime_auto:1; unsigned int no_callbacks:1; + unsigned int irq_safe:1; unsigned int use_autosuspend:1; unsigned int timer_autosuspends:1; enum rpm_request request; diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h index d19f1cca7f74..e9cc049ccb62 100644 --- a/include/linux/pm_runtime.h +++ b/include/linux/pm_runtime.h @@ -40,6 +40,7 @@ extern int pm_generic_runtime_idle(struct device *dev); extern int pm_generic_runtime_suspend(struct device *dev); extern int pm_generic_runtime_resume(struct device *dev); extern void pm_runtime_no_callbacks(struct device *dev); +extern void pm_runtime_irq_safe(struct device *dev); extern void __pm_runtime_use_autosuspend(struct device *dev, bool use); extern void pm_runtime_set_autosuspend_delay(struct device *dev, int delay); extern unsigned long pm_runtime_autosuspend_expiration(struct device *dev); @@ -124,6 +125,7 @@ static inline int pm_generic_runtime_idle(struct device *dev) { return 0; } static inline int pm_generic_runtime_suspend(struct device *dev) { return 0; } static inline int pm_generic_runtime_resume(struct device *dev) { return 0; } static inline void pm_runtime_no_callbacks(struct device *dev) {} +static inline void pm_runtime_irq_safe(struct device *dev) {} static inline void pm_runtime_mark_last_busy(struct device *dev) {} static inline void __pm_runtime_use_autosuspend(struct device *dev, @@ -196,6 +198,11 @@ static inline int pm_runtime_put_sync(struct device *dev) return __pm_runtime_idle(dev, RPM_GET_PUT); } +static inline int pm_runtime_put_sync_suspend(struct device *dev) +{ + return __pm_runtime_suspend(dev, RPM_GET_PUT); +} + static inline int pm_runtime_put_sync_autosuspend(struct device *dev) { return __pm_runtime_suspend(dev, RPM_GET_PUT | RPM_AUTO); -- cgit v1.2.3 From a2867e08c8e3bdbc00caf56bc3bdde19ccc058e3 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Fri, 3 Dec 2010 22:58:31 +0100 Subject: PM / Wakeup: Replace pm_check_wakeup_events() with pm_wakeup_pending() To avoid confusion with the meaning and return value of pm_check_wakeup_events() replace it with pm_wakeup_pending() that will work the other way around (ie. return true when system-wide power transition should be aborted). Signed-off-by: Rafael J. Wysocki --- include/linux/suspend.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/suspend.h b/include/linux/suspend.h index 26697514c5ec..144b34be5c32 100644 --- a/include/linux/suspend.h +++ b/include/linux/suspend.h @@ -292,7 +292,7 @@ extern int unregister_pm_notifier(struct notifier_block *nb); /* drivers/base/power/wakeup.c */ extern bool events_check_enabled; -extern bool pm_check_wakeup_events(void); +extern bool pm_wakeup_pending(void); extern bool pm_get_wakeup_count(unsigned int *count); extern bool pm_save_wakeup_count(unsigned int count); #else /* !CONFIG_PM_SLEEP */ @@ -309,7 +309,7 @@ static inline int unregister_pm_notifier(struct notifier_block *nb) #define pm_notifier(fn, pri) do { (void)(fn); } while (0) -static inline bool pm_check_wakeup_events(void) { return true; } +static inline bool pm_wakeup_pending(void) { return false; } #endif /* !CONFIG_PM_SLEEP */ extern struct mutex pm_mutex; -- cgit v1.2.3 From b8c76f6aed0ab7df73a6410f3f82de2c831bb144 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Thu, 16 Dec 2010 00:51:21 +0100 Subject: PM: Replace the device power.status field with a bit field The device power.status field is too complicated for its purpose (storing the information about whether or not the device is in the "active" state from the PM core's point of view), so replace it with a bit field and modify all of its users accordingly. Signed-off-by: Rafael J. Wysocki --- include/linux/device.h | 4 ++-- include/linux/pm.h | 43 ++----------------------------------------- 2 files changed, 4 insertions(+), 43 deletions(-) (limited to 'include/linux') diff --git a/include/linux/device.h b/include/linux/device.h index dd4895313468..45bc8c1669d2 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -508,13 +508,13 @@ static inline int device_is_registered(struct device *dev) static inline void device_enable_async_suspend(struct device *dev) { - if (dev->power.status == DPM_ON) + if (!dev->power.in_suspend) dev->power.async_suspend = true; } static inline void device_disable_async_suspend(struct device *dev) { - if (dev->power.status == DPM_ON) + if (!dev->power.in_suspend) dev->power.async_suspend = false; } diff --git a/include/linux/pm.h b/include/linux/pm.h index 61f2066e6852..c1756dfeb8c5 100644 --- a/include/linux/pm.h +++ b/include/linux/pm.h @@ -366,45 +366,6 @@ extern struct dev_pm_ops generic_subsys_pm_ops; #define PMSG_AUTO_RESUME ((struct pm_message) \ { .event = PM_EVENT_AUTO_RESUME, }) -/** - * Device power management states - * - * These state labels are used internally by the PM core to indicate the current - * status of a device with respect to the PM core operations. - * - * DPM_ON Device is regarded as operational. Set this way - * initially and when ->complete() is about to be called. - * Also set when ->prepare() fails. - * - * DPM_PREPARING Device is going to be prepared for a PM transition. Set - * when ->prepare() is about to be called. - * - * DPM_RESUMING Device is going to be resumed. Set when ->resume(), - * ->thaw(), or ->restore() is about to be called. - * - * DPM_SUSPENDING Device has been prepared for a power transition. Set - * when ->prepare() has just succeeded. - * - * DPM_OFF Device is regarded as inactive. Set immediately after - * ->suspend(), ->freeze(), or ->poweroff() has succeeded. - * Also set when ->resume()_noirq, ->thaw_noirq(), or - * ->restore_noirq() is about to be called. - * - * DPM_OFF_IRQ Device is in a "deep sleep". Set immediately after - * ->suspend_noirq(), ->freeze_noirq(), or - * ->poweroff_noirq() has just succeeded. - */ - -enum dpm_state { - DPM_INVALID, - DPM_ON, - DPM_PREPARING, - DPM_RESUMING, - DPM_SUSPENDING, - DPM_OFF, - DPM_OFF_IRQ, -}; - /** * Device run-time power management status. * @@ -463,8 +424,8 @@ struct wakeup_source; struct dev_pm_info { pm_message_t power_state; unsigned int can_wakeup:1; - unsigned async_suspend:1; - enum dpm_state status; /* Owned by the PM core */ + unsigned int async_suspend:1; + unsigned int in_suspend:1; /* Owned by the PM core */ spinlock_t lock; #ifdef CONFIG_PM_SLEEP struct list_head entry; -- cgit v1.2.3 From 4b31db8a16fa0d4d6a0fa42d044e7a4f4dad3641 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Fri, 24 Dec 2010 15:04:06 +0100 Subject: PM / Runtime: Generic resume shouldn't set RPM_ACTIVE unconditionally The __pm_generic_resume() function changes the given device's runtime PM status to RPM_ACTIVE if its driver's callback returns 0, but it only should do that if the rumtime PM is enabled for the device. Signed-off-by: Rafael J. Wysocki --- include/linux/pm_runtime.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h index e9cc049ccb62..d34f067e2a7f 100644 --- a/include/linux/pm_runtime.h +++ b/include/linux/pm_runtime.h @@ -82,6 +82,11 @@ static inline bool pm_runtime_suspended(struct device *dev) && !dev->power.disable_depth; } +static inline bool pm_runtime_enabled(struct device *dev) +{ + return !dev->power.disable_depth; +} + static inline void pm_runtime_mark_last_busy(struct device *dev) { ACCESS_ONCE(dev->power.last_busy) = jiffies; @@ -120,6 +125,7 @@ static inline void pm_runtime_put_noidle(struct device *dev) {} static inline bool device_run_wake(struct device *dev) { return false; } static inline void device_set_run_wake(struct device *dev, bool enable) {} static inline bool pm_runtime_suspended(struct device *dev) { return false; } +static inline bool pm_runtime_enabled(struct device *dev) { return false; } static inline int pm_generic_runtime_idle(struct device *dev) { return 0; } static inline int pm_generic_runtime_suspend(struct device *dev) { return 0; } -- cgit v1.2.3 From 62bcb91573425975d6ad2389d7ab1d8feca88ab4 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Fri, 24 Dec 2010 15:04:41 +0100 Subject: PM: Prototype the pm_generic_ operations The pm_generic_ operations are all exported but are not prototyped in any header file for direct use. Do so. [rjw: Added extern.] Signed-off-by: Mark Brown Signed-off-by: Rafael J. Wysocki --- include/linux/pm.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pm.h b/include/linux/pm.h index c1756dfeb8c5..dd9c7ab38270 100644 --- a/include/linux/pm.h +++ b/include/linux/pm.h @@ -572,4 +572,11 @@ extern unsigned int pm_flags; #define PM_APM 1 #define PM_ACPI 2 +extern int pm_generic_suspend(struct device *dev); +extern int pm_generic_resume(struct device *dev); +extern int pm_generic_freeze(struct device *dev); +extern int pm_generic_thaw(struct device *dev); +extern int pm_generic_restore(struct device *dev); +extern int pm_generic_poweroff(struct device *dev); + #endif /* _LINUX_PM_H */ -- cgit v1.2.3 From ca01d6dd2d7a2652000307520777538740efc286 Mon Sep 17 00:00:00 2001 From: Tony Luck Date: Tue, 28 Dec 2010 14:25:21 -0800 Subject: pstore: new filesystem interface to platform persistent storage Some platforms have a small amount of non-volatile storage that can be used to store information useful to diagnose the cause of a system crash. This is the generic part of a file system interface that presents information from the crash as a series of files in /dev/pstore. Once the information has been seen, the underlying storage is freed by deleting the files. Signed-off-by: Tony Luck --- include/linux/magic.h | 1 + include/linux/pstore.h | 60 ++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 61 insertions(+) create mode 100644 include/linux/pstore.h (limited to 'include/linux') diff --git a/include/linux/magic.h b/include/linux/magic.h index ff690d05f129..e87fd5ac3e5e 100644 --- a/include/linux/magic.h +++ b/include/linux/magic.h @@ -26,6 +26,7 @@ #define ISOFS_SUPER_MAGIC 0x9660 #define JFFS2_SUPER_MAGIC 0x72b6 #define ANON_INODE_FS_MAGIC 0x09041934 +#define PSTOREFS_MAGIC 0x6165676C #define MINIX_SUPER_MAGIC 0x137F /* original minix fs */ #define MINIX_SUPER_MAGIC2 0x138F /* minix fs, 30 char names */ diff --git a/include/linux/pstore.h b/include/linux/pstore.h new file mode 100644 index 000000000000..41977737bb7d --- /dev/null +++ b/include/linux/pstore.h @@ -0,0 +1,60 @@ +/* + * Persistent Storage - pstore.h + * + * Copyright (C) 2010 Intel Corporation + * + * This code is the generic layer to export data records from platform + * level persistent storage via a file system. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ +#ifndef _LINUX_PSTORE_H +#define _LINUX_PSTORE_H + +/* types */ +enum pstore_type_id { + PSTORE_TYPE_DMESG = 0, + PSTORE_TYPE_MCE = 1, + PSTORE_TYPE_UNKNOWN = 255 +}; + +struct pstore_info { + struct module *owner; + char *name; + struct mutex buf_mutex; /* serialize access to 'buf' */ + char *buf; + size_t bufsize; + size_t (*read)(u64 *id, enum pstore_type_id *type, + struct timespec *time); + u64 (*write)(enum pstore_type_id type, size_t size); + int (*erase)(u64 id); +}; + +#ifdef CONFIG_PSTORE +extern int pstore_register(struct pstore_info *); +extern int pstore_write(enum pstore_type_id type, char *buf, size_t size); +#else +static inline int +pstore_register(struct pstore_info *psi) +{ + return -ENODEV; +} +static inline int +pstore_write(enum pstore_type_id type, char *buf, size_t size) +{ + return -ENODEV; +} +#endif + +#endif /*_LINUX_PSTORE_H*/ -- cgit v1.2.3 From eac8ae087ac66b21de94fee3e920210b43d43076 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Mariusz=20Bia=C5=82o=C5=84czyk?= Date: Mon, 15 Nov 2010 15:50:13 -0300 Subject: [media] Fix rc-tbs-nec table after converting the cx88 driver to ir-core MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The patch fixes the rc-tbs-nec table after converting drivers/media/video/cx88 to ir-core (commit ba7e90c9f878e0ac3c0614a5446fe5c62ccc33ec). It is also adds two missing buttons (10- and 10+) with its definition (KEY_10CHANNELSUP and KEY_10CHANNELSDOWN). [mchehab@redhat.com: move keycode numbers to 0x1b8/0x1b9 as requested by the input Maintainer] Signed-off-by: Mariusz Białończyk Signed-off-by: Mauro Carvalho Chehab --- include/linux/input.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/input.h b/include/linux/input.h index 9777668883be..f7a6e1966df3 100644 --- a/include/linux/input.h +++ b/include/linux/input.h @@ -590,6 +590,8 @@ struct input_keymap_entry { #define KEY_FRAMEFORWARD 0x1b5 #define KEY_CONTEXT_MENU 0x1b6 /* GenDesc - system context menu */ #define KEY_MEDIA_REPEAT 0x1b7 /* Consumer - transport control */ +#define KEY_10CHANNELSUP 0x1b8 /* 10 channels up (10+) */ +#define KEY_10CHANNELSDOWN 0x1b9 /* 10 channels down (10-) */ #define KEY_DEL_EOL 0x1c0 #define KEY_DEL_EOS 0x1c1 -- cgit v1.2.3 From 383268a8e282fb549dabe3a33ccafc9434ab6006 Mon Sep 17 00:00:00 2001 From: Matti Aaltonen Date: Fri, 10 Dec 2010 11:41:33 -0300 Subject: [media] MFD: WL1273 FM Radio: MFD driver for the FM radio This is the core of the WL1273 FM radio driver, it connects the two child modules. The two child drivers are drivers/media/radio/radio-wl1273.c and sound/soc/codecs/wl1273.c. The radio-wl1273 driver implements the V4L2 interface and communicates with the device. The ALSA codec offers digital audio, without it only analog audio is available. Signed-off-by: Matti J. Aaltonen Acked-by: Samuel Ortiz Signed-off-by: Mauro Carvalho Chehab --- include/linux/mfd/wl1273-core.h | 288 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 288 insertions(+) create mode 100644 include/linux/mfd/wl1273-core.h (limited to 'include/linux') diff --git a/include/linux/mfd/wl1273-core.h b/include/linux/mfd/wl1273-core.h new file mode 100644 index 000000000000..9787293eae5f --- /dev/null +++ b/include/linux/mfd/wl1273-core.h @@ -0,0 +1,288 @@ +/* + * include/linux/mfd/wl1273-core.h + * + * Some definitions for the wl1273 radio receiver/transmitter chip. + * + * Copyright (C) 2010 Nokia Corporation + * Author: Matti J. Aaltonen + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA + * 02110-1301 USA + */ + +#ifndef WL1273_CORE_H +#define WL1273_CORE_H + +#include +#include + +#define WL1273_FM_DRIVER_NAME "wl1273-fm" +#define RX71_FM_I2C_ADDR 0x22 + +#define WL1273_STEREO_GET 0 +#define WL1273_RSSI_LVL_GET 1 +#define WL1273_IF_COUNT_GET 2 +#define WL1273_FLAG_GET 3 +#define WL1273_RDS_SYNC_GET 4 +#define WL1273_RDS_DATA_GET 5 +#define WL1273_FREQ_SET 10 +#define WL1273_AF_FREQ_SET 11 +#define WL1273_MOST_MODE_SET 12 +#define WL1273_MOST_BLEND_SET 13 +#define WL1273_DEMPH_MODE_SET 14 +#define WL1273_SEARCH_LVL_SET 15 +#define WL1273_BAND_SET 16 +#define WL1273_MUTE_STATUS_SET 17 +#define WL1273_RDS_PAUSE_LVL_SET 18 +#define WL1273_RDS_PAUSE_DUR_SET 19 +#define WL1273_RDS_MEM_SET 20 +#define WL1273_RDS_BLK_B_SET 21 +#define WL1273_RDS_MSK_B_SET 22 +#define WL1273_RDS_PI_MASK_SET 23 +#define WL1273_RDS_PI_SET 24 +#define WL1273_RDS_SYSTEM_SET 25 +#define WL1273_INT_MASK_SET 26 +#define WL1273_SEARCH_DIR_SET 27 +#define WL1273_VOLUME_SET 28 +#define WL1273_AUDIO_ENABLE 29 +#define WL1273_PCM_MODE_SET 30 +#define WL1273_I2S_MODE_CONFIG_SET 31 +#define WL1273_POWER_SET 32 +#define WL1273_INTX_CONFIG_SET 33 +#define WL1273_PULL_EN_SET 34 +#define WL1273_HILO_SET 35 +#define WL1273_SWITCH2FREF 36 +#define WL1273_FREQ_DRIFT_REPORT 37 + +#define WL1273_PCE_GET 40 +#define WL1273_FIRM_VER_GET 41 +#define WL1273_ASIC_VER_GET 42 +#define WL1273_ASIC_ID_GET 43 +#define WL1273_MAN_ID_GET 44 +#define WL1273_TUNER_MODE_SET 45 +#define WL1273_STOP_SEARCH 46 +#define WL1273_RDS_CNTRL_SET 47 + +#define WL1273_WRITE_HARDWARE_REG 100 +#define WL1273_CODE_DOWNLOAD 101 +#define WL1273_RESET 102 + +#define WL1273_FM_POWER_MODE 254 +#define WL1273_FM_INTERRUPT 255 + +/* Transmitter API */ + +#define WL1273_CHANL_SET 55 +#define WL1273_SCAN_SPACING_SET 56 +#define WL1273_REF_SET 57 +#define WL1273_POWER_ENB_SET 90 +#define WL1273_POWER_ATT_SET 58 +#define WL1273_POWER_LEV_SET 59 +#define WL1273_AUDIO_DEV_SET 60 +#define WL1273_PILOT_DEV_SET 61 +#define WL1273_RDS_DEV_SET 62 +#define WL1273_PUPD_SET 91 +#define WL1273_AUDIO_IO_SET 63 +#define WL1273_PREMPH_SET 64 +#define WL1273_MONO_SET 66 +#define WL1273_MUTE 92 +#define WL1273_MPX_LMT_ENABLE 67 +#define WL1273_PI_SET 93 +#define WL1273_ECC_SET 69 +#define WL1273_PTY 70 +#define WL1273_AF 71 +#define WL1273_DISPLAY_MODE 74 +#define WL1273_RDS_REP_SET 77 +#define WL1273_RDS_CONFIG_DATA_SET 98 +#define WL1273_RDS_DATA_SET 99 +#define WL1273_RDS_DATA_ENB 94 +#define WL1273_TA_SET 78 +#define WL1273_TP_SET 79 +#define WL1273_DI_SET 80 +#define WL1273_MS_SET 81 +#define WL1273_PS_SCROLL_SPEED 82 +#define WL1273_TX_AUDIO_LEVEL_TEST 96 +#define WL1273_TX_AUDIO_LEVEL_TEST_THRESHOLD 73 +#define WL1273_TX_AUDIO_INPUT_LEVEL_RANGE_SET 54 +#define WL1273_RX_ANTENNA_SELECT 87 +#define WL1273_I2C_DEV_ADDR_SET 86 +#define WL1273_REF_ERR_CALIB_PARAM_SET 88 +#define WL1273_REF_ERR_CALIB_PERIODICITY_SET 89 +#define WL1273_SOC_INT_TRIGGER 52 +#define WL1273_SOC_AUDIO_PATH_SET 83 +#define WL1273_SOC_PCMI_OVERRIDE 84 +#define WL1273_SOC_I2S_OVERRIDE 85 +#define WL1273_RSSI_BLOCK_SCAN_FREQ_SET 95 +#define WL1273_RSSI_BLOCK_SCAN_START 97 +#define WL1273_RSSI_BLOCK_SCAN_DATA_GET 5 +#define WL1273_READ_FMANT_TUNE_VALUE 104 + +#define WL1273_RDS_OFF 0 +#define WL1273_RDS_ON 1 +#define WL1273_RDS_RESET 2 + +#define WL1273_AUDIO_DIGITAL 0 +#define WL1273_AUDIO_ANALOG 1 + +#define WL1273_MODE_RX BIT(0) +#define WL1273_MODE_TX BIT(1) +#define WL1273_MODE_OFF BIT(2) +#define WL1273_MODE_SUSPENDED BIT(3) + +#define WL1273_RADIO_CHILD BIT(0) +#define WL1273_CODEC_CHILD BIT(1) + +#define WL1273_RX_MONO 1 +#define WL1273_RX_STEREO 0 +#define WL1273_TX_MONO 0 +#define WL1273_TX_STEREO 1 + +#define WL1273_MAX_VOLUME 0xffff +#define WL1273_DEFAULT_VOLUME 0x78b8 + +/* I2S protocol, left channel first, data width 16 bits */ +#define WL1273_PCM_DEF_MODE 0x00 + +/* Rx */ +#define WL1273_AUDIO_ENABLE_I2S BIT(0) +#define WL1273_AUDIO_ENABLE_ANALOG BIT(1) + +/* Tx */ +#define WL1273_AUDIO_IO_SET_ANALOG 0 +#define WL1273_AUDIO_IO_SET_I2S 1 + +#define WL1273_PUPD_SET_OFF 0x00 +#define WL1273_PUPD_SET_ON 0x01 +#define WL1273_PUPD_SET_RETENTION 0x10 + +/* I2S mode */ +#define WL1273_IS2_WIDTH_32 0x0 +#define WL1273_IS2_WIDTH_40 0x1 +#define WL1273_IS2_WIDTH_22_23 0x2 +#define WL1273_IS2_WIDTH_23_22 0x3 +#define WL1273_IS2_WIDTH_48 0x4 +#define WL1273_IS2_WIDTH_50 0x5 +#define WL1273_IS2_WIDTH_60 0x6 +#define WL1273_IS2_WIDTH_64 0x7 +#define WL1273_IS2_WIDTH_80 0x8 +#define WL1273_IS2_WIDTH_96 0x9 +#define WL1273_IS2_WIDTH_128 0xa +#define WL1273_IS2_WIDTH 0xf + +#define WL1273_IS2_FORMAT_STD (0x0 << 4) +#define WL1273_IS2_FORMAT_LEFT (0x1 << 4) +#define WL1273_IS2_FORMAT_RIGHT (0x2 << 4) +#define WL1273_IS2_FORMAT_USER (0x3 << 4) + +#define WL1273_IS2_MASTER (0x0 << 6) +#define WL1273_IS2_SLAVEW (0x1 << 6) + +#define WL1273_IS2_TRI_AFTER_SENDING (0x0 << 7) +#define WL1273_IS2_TRI_ALWAYS_ACTIVE (0x1 << 7) + +#define WL1273_IS2_SDOWS_RR (0x0 << 8) +#define WL1273_IS2_SDOWS_RF (0x1 << 8) +#define WL1273_IS2_SDOWS_FR (0x2 << 8) +#define WL1273_IS2_SDOWS_FF (0x3 << 8) + +#define WL1273_IS2_TRI_OPT (0x0 << 10) +#define WL1273_IS2_TRI_ALWAYS (0x1 << 10) + +#define WL1273_IS2_RATE_48K (0x0 << 12) +#define WL1273_IS2_RATE_44_1K (0x1 << 12) +#define WL1273_IS2_RATE_32K (0x2 << 12) +#define WL1273_IS2_RATE_22_05K (0x4 << 12) +#define WL1273_IS2_RATE_16K (0x5 << 12) +#define WL1273_IS2_RATE_12K (0x8 << 12) +#define WL1273_IS2_RATE_11_025 (0x9 << 12) +#define WL1273_IS2_RATE_8K (0xa << 12) +#define WL1273_IS2_RATE (0xf << 12) + +#define WL1273_I2S_DEF_MODE (WL1273_IS2_WIDTH_32 | \ + WL1273_IS2_FORMAT_STD | \ + WL1273_IS2_MASTER | \ + WL1273_IS2_TRI_AFTER_SENDING | \ + WL1273_IS2_SDOWS_RR | \ + WL1273_IS2_TRI_OPT | \ + WL1273_IS2_RATE_48K) + +#define SCHAR_MIN (-128) +#define SCHAR_MAX 127 + +#define WL1273_FR_EVENT BIT(0) +#define WL1273_BL_EVENT BIT(1) +#define WL1273_RDS_EVENT BIT(2) +#define WL1273_BBLK_EVENT BIT(3) +#define WL1273_LSYNC_EVENT BIT(4) +#define WL1273_LEV_EVENT BIT(5) +#define WL1273_IFFR_EVENT BIT(6) +#define WL1273_PI_EVENT BIT(7) +#define WL1273_PD_EVENT BIT(8) +#define WL1273_STIC_EVENT BIT(9) +#define WL1273_MAL_EVENT BIT(10) +#define WL1273_POW_ENB_EVENT BIT(11) +#define WL1273_SCAN_OVER_EVENT BIT(12) +#define WL1273_ERROR_EVENT BIT(13) + +#define TUNER_MODE_STOP_SEARCH 0 +#define TUNER_MODE_PRESET 1 +#define TUNER_MODE_AUTO_SEEK 2 +#define TUNER_MODE_AF 3 +#define TUNER_MODE_AUTO_SEEK_PI 4 +#define TUNER_MODE_AUTO_SEEK_BULK 5 + +#define RDS_BLOCK_SIZE 3 + +struct wl1273_fm_platform_data { + int (*request_resources) (struct i2c_client *client); + void (*free_resources) (void); + void (*enable) (void); + void (*disable) (void); + + u8 forbidden_modes; + unsigned int children; +}; + +#define WL1273_FM_CORE_CELLS 2 + +#define WL1273_BAND_OTHER 0 +#define WL1273_BAND_JAPAN 1 + +#define WL1273_BAND_JAPAN_LOW 76000 +#define WL1273_BAND_JAPAN_HIGH 90000 +#define WL1273_BAND_OTHER_LOW 87500 +#define WL1273_BAND_OTHER_HIGH 108000 + +#define WL1273_BAND_TX_LOW 76000 +#define WL1273_BAND_TX_HIGH 108000 + +struct wl1273_core { + struct mfd_cell cells[WL1273_FM_CORE_CELLS]; + struct wl1273_fm_platform_data *pdata; + + unsigned int mode; + unsigned int i2s_mode; + unsigned int volume; + unsigned int audio_mode; + unsigned int channel_number; + struct mutex lock; /* for serializing fm radio operations */ + + struct i2c_client *client; + + int (*write)(struct wl1273_core *core, u8, u16); + int (*set_audio)(struct wl1273_core *core, unsigned int); + int (*set_volume)(struct wl1273_core *core, unsigned int); +}; + +#endif /* ifndef WL1273_CORE_H */ -- cgit v1.2.3 From 08af245de0cf6ab5f4ed008ee2bb99273774fce0 Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Fri, 24 Dec 2010 10:33:19 -0300 Subject: [media] V4L: remove V4L1 compatibility mode Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- include/linux/videodev.h | 22 ++-------------------- 1 file changed, 2 insertions(+), 20 deletions(-) (limited to 'include/linux') diff --git a/include/linux/videodev.h b/include/linux/videodev.h index b19eab140977..8a7aead76a38 100644 --- a/include/linux/videodev.h +++ b/include/linux/videodev.h @@ -16,24 +16,7 @@ #include #include -#if defined(__MIN_V4L1) && defined (__KERNEL__) - -/* - * Used by those V4L2 core functions that need a minimum V4L1 support, - * in order to allow V4L1 Compatibilty code compilation. - */ - -struct video_mbuf -{ - int size; /* Total memory to map */ - int frames; /* Frames */ - int offsets[VIDEO_MAX_FRAME]; -}; - -#define VIDIOCGMBUF _IOR('v',20, struct video_mbuf) /* Memory map buffer info */ - -#else -#if defined(CONFIG_VIDEO_V4L1_COMPAT) || !defined (__KERNEL__) +#if defined(CONFIG_VIDEO_V4L1) || defined(CONFIG_VIDEO_V4L1_MODULE) || !defined(__KERNEL__) #define VID_TYPE_CAPTURE 1 /* Can capture */ #define VID_TYPE_TUNER 2 /* Can tune */ @@ -328,8 +311,7 @@ struct video_code #define VID_PLAY_RESET 13 #define VID_PLAY_END_MARK 14 -#endif /* CONFIG_VIDEO_V4L1_COMPAT */ -#endif /* __MIN_V4L1 */ +#endif /* CONFIG_VIDEO_V4L1 */ #endif /* __LINUX_VIDEODEV_H */ -- cgit v1.2.3 From 58c66df3e38ffb1d59cc5162bb9e07c859288034 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Mon, 27 Dec 2010 07:38:48 -0300 Subject: [media] Remove VIDEO_V4L1 Kconfig option There's no sense on keeping VIDEO_V4L1 Kconfig option just because of two deprecated drivers moved to staging scheduled to die on 2.6.39. Reviewed-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- include/linux/videodev.h | 4 ---- 1 file changed, 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/videodev.h b/include/linux/videodev.h index 8a7aead76a38..f11efbef1c05 100644 --- a/include/linux/videodev.h +++ b/include/linux/videodev.h @@ -16,8 +16,6 @@ #include #include -#if defined(CONFIG_VIDEO_V4L1) || defined(CONFIG_VIDEO_V4L1_MODULE) || !defined(__KERNEL__) - #define VID_TYPE_CAPTURE 1 /* Can capture */ #define VID_TYPE_TUNER 2 /* Can tune */ #define VID_TYPE_TELETEXT 4 /* Does teletext */ @@ -311,8 +309,6 @@ struct video_code #define VID_PLAY_RESET 13 #define VID_PLAY_END_MARK 14 -#endif /* CONFIG_VIDEO_V4L1 */ - #endif /* __LINUX_VIDEODEV_H */ /* -- cgit v1.2.3 From 88ae7624a6fe890e5a8ca57b25420f66e1389f8b Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Mon, 27 Dec 2010 07:47:54 -0300 Subject: [media] V4L1 removal: Remove linux/videodev.h There's no sense on keeping it on 2.6.38, as nobody is using it anymore, at the kernel tree, and installing it at the userspace API. As two deprecated drivers still need it, move it to their internal directories. Reviewed-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- include/linux/Kbuild | 1 - include/linux/videodev.h | 318 ----------------------------------------------- 2 files changed, 319 deletions(-) delete mode 100644 include/linux/videodev.h (limited to 'include/linux') diff --git a/include/linux/Kbuild b/include/linux/Kbuild index 97319a8fc1e0..a354c199ab98 100644 --- a/include/linux/Kbuild +++ b/include/linux/Kbuild @@ -367,7 +367,6 @@ header-y += utime.h header-y += utsname.h header-y += veth.h header-y += vhost.h -header-y += videodev.h header-y += videodev2.h header-y += virtio_9p.h header-y += virtio_balloon.h diff --git a/include/linux/videodev.h b/include/linux/videodev.h deleted file mode 100644 index f11efbef1c05..000000000000 --- a/include/linux/videodev.h +++ /dev/null @@ -1,318 +0,0 @@ -/* - * Video for Linux version 1 - OBSOLETE - * - * Header file for v4l1 drivers and applications, for - * Linux kernels 2.2.x or 2.4.x. - * - * Provides header for legacy drivers and applications - * - * See http://linuxtv.org for more info - * - */ -#ifndef __LINUX_VIDEODEV_H -#define __LINUX_VIDEODEV_H - -#include -#include -#include - -#define VID_TYPE_CAPTURE 1 /* Can capture */ -#define VID_TYPE_TUNER 2 /* Can tune */ -#define VID_TYPE_TELETEXT 4 /* Does teletext */ -#define VID_TYPE_OVERLAY 8 /* Overlay onto frame buffer */ -#define VID_TYPE_CHROMAKEY 16 /* Overlay by chromakey */ -#define VID_TYPE_CLIPPING 32 /* Can clip */ -#define VID_TYPE_FRAMERAM 64 /* Uses the frame buffer memory */ -#define VID_TYPE_SCALES 128 /* Scalable */ -#define VID_TYPE_MONOCHROME 256 /* Monochrome only */ -#define VID_TYPE_SUBCAPTURE 512 /* Can capture subareas of the image */ -#define VID_TYPE_MPEG_DECODER 1024 /* Can decode MPEG streams */ -#define VID_TYPE_MPEG_ENCODER 2048 /* Can encode MPEG streams */ -#define VID_TYPE_MJPEG_DECODER 4096 /* Can decode MJPEG streams */ -#define VID_TYPE_MJPEG_ENCODER 8192 /* Can encode MJPEG streams */ - -struct video_capability -{ - char name[32]; - int type; - int channels; /* Num channels */ - int audios; /* Num audio devices */ - int maxwidth; /* Supported width */ - int maxheight; /* And height */ - int minwidth; /* Supported width */ - int minheight; /* And height */ -}; - - -struct video_channel -{ - int channel; - char name[32]; - int tuners; - __u32 flags; -#define VIDEO_VC_TUNER 1 /* Channel has a tuner */ -#define VIDEO_VC_AUDIO 2 /* Channel has audio */ - __u16 type; -#define VIDEO_TYPE_TV 1 -#define VIDEO_TYPE_CAMERA 2 - __u16 norm; /* Norm set by channel */ -}; - -struct video_tuner -{ - int tuner; - char name[32]; - unsigned long rangelow, rangehigh; /* Tuner range */ - __u32 flags; -#define VIDEO_TUNER_PAL 1 -#define VIDEO_TUNER_NTSC 2 -#define VIDEO_TUNER_SECAM 4 -#define VIDEO_TUNER_LOW 8 /* Uses KHz not MHz */ -#define VIDEO_TUNER_NORM 16 /* Tuner can set norm */ -#define VIDEO_TUNER_STEREO_ON 128 /* Tuner is seeing stereo */ -#define VIDEO_TUNER_RDS_ON 256 /* Tuner is seeing an RDS datastream */ -#define VIDEO_TUNER_MBS_ON 512 /* Tuner is seeing an MBS datastream */ - __u16 mode; /* PAL/NTSC/SECAM/OTHER */ -#define VIDEO_MODE_PAL 0 -#define VIDEO_MODE_NTSC 1 -#define VIDEO_MODE_SECAM 2 -#define VIDEO_MODE_AUTO 3 - __u16 signal; /* Signal strength 16bit scale */ -}; - -struct video_picture -{ - __u16 brightness; - __u16 hue; - __u16 colour; - __u16 contrast; - __u16 whiteness; /* Black and white only */ - __u16 depth; /* Capture depth */ - __u16 palette; /* Palette in use */ -#define VIDEO_PALETTE_GREY 1 /* Linear greyscale */ -#define VIDEO_PALETTE_HI240 2 /* High 240 cube (BT848) */ -#define VIDEO_PALETTE_RGB565 3 /* 565 16 bit RGB */ -#define VIDEO_PALETTE_RGB24 4 /* 24bit RGB */ -#define VIDEO_PALETTE_RGB32 5 /* 32bit RGB */ -#define VIDEO_PALETTE_RGB555 6 /* 555 15bit RGB */ -#define VIDEO_PALETTE_YUV422 7 /* YUV422 capture */ -#define VIDEO_PALETTE_YUYV 8 -#define VIDEO_PALETTE_UYVY 9 /* The great thing about standards is ... */ -#define VIDEO_PALETTE_YUV420 10 -#define VIDEO_PALETTE_YUV411 11 /* YUV411 capture */ -#define VIDEO_PALETTE_RAW 12 /* RAW capture (BT848) */ -#define VIDEO_PALETTE_YUV422P 13 /* YUV 4:2:2 Planar */ -#define VIDEO_PALETTE_YUV411P 14 /* YUV 4:1:1 Planar */ -#define VIDEO_PALETTE_YUV420P 15 /* YUV 4:2:0 Planar */ -#define VIDEO_PALETTE_YUV410P 16 /* YUV 4:1:0 Planar */ -#define VIDEO_PALETTE_PLANAR 13 /* start of planar entries */ -#define VIDEO_PALETTE_COMPONENT 7 /* start of component entries */ -}; - -struct video_audio -{ - int audio; /* Audio channel */ - __u16 volume; /* If settable */ - __u16 bass, treble; - __u32 flags; -#define VIDEO_AUDIO_MUTE 1 -#define VIDEO_AUDIO_MUTABLE 2 -#define VIDEO_AUDIO_VOLUME 4 -#define VIDEO_AUDIO_BASS 8 -#define VIDEO_AUDIO_TREBLE 16 -#define VIDEO_AUDIO_BALANCE 32 - char name[16]; -#define VIDEO_SOUND_MONO 1 -#define VIDEO_SOUND_STEREO 2 -#define VIDEO_SOUND_LANG1 4 -#define VIDEO_SOUND_LANG2 8 - __u16 mode; - __u16 balance; /* Stereo balance */ - __u16 step; /* Step actual volume uses */ -}; - -struct video_clip -{ - __s32 x,y; - __s32 width, height; - struct video_clip *next; /* For user use/driver use only */ -}; - -struct video_window -{ - __u32 x,y; /* Position of window */ - __u32 width,height; /* Its size */ - __u32 chromakey; - __u32 flags; - struct video_clip __user *clips; /* Set only */ - int clipcount; -#define VIDEO_WINDOW_INTERLACE 1 -#define VIDEO_WINDOW_CHROMAKEY 16 /* Overlay by chromakey */ -#define VIDEO_CLIP_BITMAP -1 -/* bitmap is 1024x625, a '1' bit represents a clipped pixel */ -#define VIDEO_CLIPMAP_SIZE (128 * 625) -}; - -struct video_capture -{ - __u32 x,y; /* Offsets into image */ - __u32 width, height; /* Area to capture */ - __u16 decimation; /* Decimation divider */ - __u16 flags; /* Flags for capture */ -#define VIDEO_CAPTURE_ODD 0 /* Temporal */ -#define VIDEO_CAPTURE_EVEN 1 -}; - -struct video_buffer -{ - void *base; - int height,width; - int depth; - int bytesperline; -}; - -struct video_mmap -{ - unsigned int frame; /* Frame (0 - n) for double buffer */ - int height,width; - unsigned int format; /* should be VIDEO_PALETTE_* */ -}; - -struct video_key -{ - __u8 key[8]; - __u32 flags; -}; - -struct video_mbuf -{ - int size; /* Total memory to map */ - int frames; /* Frames */ - int offsets[VIDEO_MAX_FRAME]; -}; - -#define VIDEO_NO_UNIT (-1) - -struct video_unit -{ - int video; /* Video minor */ - int vbi; /* VBI minor */ - int radio; /* Radio minor */ - int audio; /* Audio minor */ - int teletext; /* Teletext minor */ -}; - -struct vbi_format { - __u32 sampling_rate; /* in Hz */ - __u32 samples_per_line; - __u32 sample_format; /* VIDEO_PALETTE_RAW only (1 byte) */ - __s32 start[2]; /* starting line for each frame */ - __u32 count[2]; /* count of lines for each frame */ - __u32 flags; -#define VBI_UNSYNC 1 /* can distingues between top/bottom field */ -#define VBI_INTERLACED 2 /* lines are interlaced */ -}; - -/* video_info is biased towards hardware mpeg encode/decode */ -/* but it could apply generically to any hardware compressor/decompressor */ -struct video_info -{ - __u32 frame_count; /* frames output since decode/encode began */ - __u32 h_size; /* current unscaled horizontal size */ - __u32 v_size; /* current unscaled veritcal size */ - __u32 smpte_timecode; /* current SMPTE timecode (for current GOP) */ - __u32 picture_type; /* current picture type */ - __u32 temporal_reference; /* current temporal reference */ - __u8 user_data[256]; /* user data last found in compressed stream */ - /* user_data[0] contains user data flags, user_data[1] has count */ -}; - -/* generic structure for setting playback modes */ -struct video_play_mode -{ - int mode; - int p1; - int p2; -}; - -/* for loading microcode / fpga programming */ -struct video_code -{ - char loadwhat[16]; /* name or tag of file being passed */ - int datasize; - __u8 *data; -}; - -#define VIDIOCGCAP _IOR('v',1,struct video_capability) /* Get capabilities */ -#define VIDIOCGCHAN _IOWR('v',2,struct video_channel) /* Get channel info (sources) */ -#define VIDIOCSCHAN _IOW('v',3,struct video_channel) /* Set channel */ -#define VIDIOCGTUNER _IOWR('v',4,struct video_tuner) /* Get tuner abilities */ -#define VIDIOCSTUNER _IOW('v',5,struct video_tuner) /* Tune the tuner for the current channel */ -#define VIDIOCGPICT _IOR('v',6,struct video_picture) /* Get picture properties */ -#define VIDIOCSPICT _IOW('v',7,struct video_picture) /* Set picture properties */ -#define VIDIOCCAPTURE _IOW('v',8,int) /* Start, end capture */ -#define VIDIOCGWIN _IOR('v',9, struct video_window) /* Get the video overlay window */ -#define VIDIOCSWIN _IOW('v',10, struct video_window) /* Set the video overlay window - passes clip list for hardware smarts , chromakey etc */ -#define VIDIOCGFBUF _IOR('v',11, struct video_buffer) /* Get frame buffer */ -#define VIDIOCSFBUF _IOW('v',12, struct video_buffer) /* Set frame buffer - root only */ -#define VIDIOCKEY _IOR('v',13, struct video_key) /* Video key event - to dev 255 is to all - cuts capture on all DMA windows with this key (0xFFFFFFFF == all) */ -#define VIDIOCGFREQ _IOR('v',14, unsigned long) /* Set tuner */ -#define VIDIOCSFREQ _IOW('v',15, unsigned long) /* Set tuner */ -#define VIDIOCGAUDIO _IOR('v',16, struct video_audio) /* Get audio info */ -#define VIDIOCSAUDIO _IOW('v',17, struct video_audio) /* Audio source, mute etc */ -#define VIDIOCSYNC _IOW('v',18, int) /* Sync with mmap grabbing */ -#define VIDIOCMCAPTURE _IOW('v',19, struct video_mmap) /* Grab frames */ -#define VIDIOCGMBUF _IOR('v',20, struct video_mbuf) /* Memory map buffer info */ -#define VIDIOCGUNIT _IOR('v',21, struct video_unit) /* Get attached units */ -#define VIDIOCGCAPTURE _IOR('v',22, struct video_capture) /* Get subcapture */ -#define VIDIOCSCAPTURE _IOW('v',23, struct video_capture) /* Set subcapture */ -#define VIDIOCSPLAYMODE _IOW('v',24, struct video_play_mode) /* Set output video mode/feature */ -#define VIDIOCSWRITEMODE _IOW('v',25, int) /* Set write mode */ -#define VIDIOCGPLAYINFO _IOR('v',26, struct video_info) /* Get current playback info from hardware */ -#define VIDIOCSMICROCODE _IOW('v',27, struct video_code) /* Load microcode into hardware */ -#define VIDIOCGVBIFMT _IOR('v',28, struct vbi_format) /* Get VBI information */ -#define VIDIOCSVBIFMT _IOW('v',29, struct vbi_format) /* Set VBI information */ - - -#define BASE_VIDIOCPRIVATE 192 /* 192-255 are private */ - -/* VIDIOCSWRITEMODE */ -#define VID_WRITE_MPEG_AUD 0 -#define VID_WRITE_MPEG_VID 1 -#define VID_WRITE_OSD 2 -#define VID_WRITE_TTX 3 -#define VID_WRITE_CC 4 -#define VID_WRITE_MJPEG 5 - -/* VIDIOCSPLAYMODE */ -#define VID_PLAY_VID_OUT_MODE 0 - /* p1: = VIDEO_MODE_PAL, VIDEO_MODE_NTSC, etc ... */ -#define VID_PLAY_GENLOCK 1 - /* p1: 0 = OFF, 1 = ON */ - /* p2: GENLOCK FINE DELAY value */ -#define VID_PLAY_NORMAL 2 -#define VID_PLAY_PAUSE 3 -#define VID_PLAY_SINGLE_FRAME 4 -#define VID_PLAY_FAST_FORWARD 5 -#define VID_PLAY_SLOW_MOTION 6 -#define VID_PLAY_IMMEDIATE_NORMAL 7 -#define VID_PLAY_SWITCH_CHANNELS 8 -#define VID_PLAY_FREEZE_FRAME 9 -#define VID_PLAY_STILL_MODE 10 -#define VID_PLAY_MASTER_MODE 11 - /* p1: see below */ -#define VID_PLAY_MASTER_NONE 1 -#define VID_PLAY_MASTER_VIDEO 2 -#define VID_PLAY_MASTER_AUDIO 3 -#define VID_PLAY_ACTIVE_SCANLINES 12 - /* p1 = first active; p2 = last active */ -#define VID_PLAY_RESET 13 -#define VID_PLAY_END_MARK 14 - -#endif /* __LINUX_VIDEODEV_H */ - -/* - * Local variables: - * c-basic-offset: 8 - * End: - */ -- cgit v1.2.3 From 09c730a488c32c2cadb31cdb8dcc4df528441197 Mon Sep 17 00:00:00 2001 From: Sundar Iyer Date: Tue, 21 Dec 2010 15:53:31 +0530 Subject: input/tc3589x: add tc3589x keypad support Add support for the keypad controller module found on the TC3589X devices. This driver default adds the support for TC35893 device. Signed-off-by: Sundar Iyer Acked-by: Dmitry Torokhov [Some minor fixups for compilation] Signed-off-by: Linus Walleij --- include/linux/mfd/tc3589x.h | 52 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/tc3589x.h b/include/linux/mfd/tc3589x.h index da00958b12d9..16c76e124f9c 100644 --- a/include/linux/mfd/tc3589x.h +++ b/include/linux/mfd/tc3589x.h @@ -20,6 +20,17 @@ enum tx3589x_block { #define TC3589x_RSTCTRL_KBDRST (1 << 1) #define TC3589x_RSTCTRL_GPIRST (1 << 0) +/* Keyboard Configuration Registers */ +#define TC3589x_KBDSETTLE_REG 0x01 +#define TC3589x_KBDBOUNCE 0x02 +#define TC3589x_KBDSIZE 0x03 +#define TC3589x_KBCFG_LSB 0x04 +#define TC3589x_KBCFG_MSB 0x05 +#define TC3589x_KBDIC 0x08 +#define TC3589x_KBDMSK 0x09 +#define TC3589x_EVTCODE_FIFO 0x10 +#define TC3589x_KBDMFS 0x8F + #define TC3589x_IRQST 0x91 #define TC3589x_MANFCODE_MAGIC 0x03 @@ -35,6 +46,14 @@ enum tx3589x_block { #define TC3589x_EXTRSTN 0x83 #define TC3589x_RSTINTCLR 0x84 +/* Pull up/down configuration registers */ +#define TC3589x_IOCFG 0xA7 +#define TC3589x_IOPULLCFG0_LSB 0xAA +#define TC3589x_IOPULLCFG0_MSB 0xAB +#define TC3589x_IOPULLCFG1_LSB 0xAC +#define TC3589x_IOPULLCFG1_MSB 0xAD +#define TC3589x_IOPULLCFG2_LSB 0xAE + #define TC3589x_GPIOIS0 0xC9 #define TC3589x_GPIOIS1 0xCA #define TC3589x_GPIOIS2 0xCB @@ -112,6 +131,37 @@ extern int tc3589x_block_write(struct tc3589x *tc3589x, u8 reg, u8 length, const u8 *values); extern int tc3589x_set_bits(struct tc3589x *tc3589x, u8 reg, u8 mask, u8 val); +/* + * Keypad related platform specific constants + * These values may be modified for fine tuning + */ +#define TC_KPD_ROWS 0x8 +#define TC_KPD_COLUMNS 0x8 +#define TC_KPD_DEBOUNCE_PERIOD 0xA3 +#define TC_KPD_SETTLE_TIME 0xA3 + +/** + * struct tc35893_platform_data - data structure for platform specific data + * @keymap_data: matrix scan code table for keycodes + * @krow: mask for available rows, value is 0xFF + * @kcol: mask for available columns, value is 0xFF + * @debounce_period: platform specific debounce time + * @settle_time: platform specific settle down time + * @irqtype: type of interrupt, falling or rising edge + * @enable_wakeup: specifies if keypad event can wake up system from sleep + * @no_autorepeat: flag for auto repetition + */ +struct tc3589x_keypad_platform_data { + const struct matrix_keymap_data *keymap_data; + u8 krow; + u8 kcol; + u8 debounce_period; + u8 settle_time; + unsigned long irqtype; + bool enable_wakeup; + bool no_autorepeat; +}; + /** * struct tc3589x_gpio_platform_data - TC3589x GPIO platform data * @gpio_base: first gpio number assigned to TC3589x. A maximum of @@ -130,11 +180,13 @@ struct tc3589x_gpio_platform_data { * @block: bitmask of blocks to enable (use TC3589x_BLOCK_*) * @irq_base: base IRQ number. %TC3589x_NR_IRQS irqs will be used. * @gpio: GPIO-specific platform data + * @keypad: keypad-specific platform data */ struct tc3589x_platform_data { unsigned int block; int irq_base; struct tc3589x_gpio_platform_data *gpio; + const struct tc3589x_keypad_platform_data *keypad; }; #define TC3589x_NR_GPIOS 24 -- cgit v1.2.3 From 9706a36e35c4ce04f28a62cfe1205b4e3b0dd13c Mon Sep 17 00:00:00 2001 From: Stephen Neuendorffer Date: Thu, 18 Nov 2010 15:54:59 -0800 Subject: of/flattree: Add non-boottime device tree functions In preparation for providing run-time handling of device trees, factor out some of the basic functions so that they take an arbitrary blob, rather than relying on the single boot-time tree. V2: - functions have of_fdt_* names - removed find_flat_dt_string - blob argument is first Signed-off-by: Stephen Neuendorffer Signed-off-by: Grant Likely --- include/linux/of_fdt.h | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'include/linux') diff --git a/include/linux/of_fdt.h b/include/linux/of_fdt.h index 7bbf5b328438..70c5b736f0a3 100644 --- a/include/linux/of_fdt.h +++ b/include/linux/of_fdt.h @@ -58,6 +58,17 @@ struct boot_param_header { }; #if defined(CONFIG_OF_FLATTREE) + +/* For scanning an arbitrary device-tree at any time */ +extern char *of_fdt_get_string(struct boot_param_header *blob, u32 offset); +extern void *of_fdt_get_property(struct boot_param_header *blob, + unsigned long node, + const char *name, + unsigned long *size); +extern int of_fdt_is_compatible(struct boot_param_header *blob, + unsigned long node, + const char *compat); + /* TBD: Temporary export of fdt globals - remove when code fully merged */ extern int __initdata dt_root_addr_cells; extern int __initdata dt_root_size_cells; -- cgit v1.2.3 From fe14042358fac0673d4b6362a73796fd64379938 Mon Sep 17 00:00:00 2001 From: Stephen Neuendorffer Date: Thu, 18 Nov 2010 15:55:02 -0800 Subject: of/flattree: Refactor unflatten_device_tree and add fdt_unflatten_tree unflatten_device_tree has two dependencies on things that happen during boot time. Firstly, it references the initial device tree directly. Secondly, it allocates memory using the early boot allocator. This patch factors out these dependencies and uses the new __unflatten_device_tree function to implement a driver-visible fdt_unflatten_tree function, which can be used to unflatten a blob after boot time. V2: - remove extra __va() call - make dt_alloc functions return void *. This doesn't fix the general strangeness in this code that constantly casts back and forth between unsigned long and __be32 * Signed-off-by: Stephen Neuendorffer Signed-off-by: Grant Likely --- include/linux/of_fdt.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/of_fdt.h b/include/linux/of_fdt.h index 70c5b736f0a3..9ce5dfd2186a 100644 --- a/include/linux/of_fdt.h +++ b/include/linux/of_fdt.h @@ -68,6 +68,8 @@ extern void *of_fdt_get_property(struct boot_param_header *blob, extern int of_fdt_is_compatible(struct boot_param_header *blob, unsigned long node, const char *compat); +extern void of_fdt_unflatten_tree(unsigned long *blob, + struct device_node **mynodes); /* TBD: Temporary export of fdt globals - remove when code fully merged */ extern int __initdata dt_root_addr_cells; -- cgit v1.2.3 From 3e29027af43728c2a91fe3f735ab2822edaf54a8 Mon Sep 17 00:00:00 2001 From: John Fastabend Date: Thu, 30 Dec 2010 09:25:46 +0000 Subject: dcbnl: add support for ieee8021Qaz attributes The IEEE8021Qaz is the IEEE standard version of CEE. The standard has had enough significant changes from the CEE version that many of the CEE attributes have no meaning in the new spec or do not easily map to IEEE standards. Rather then attempt to create a complicated mapping between CEE and IEEE standards this patch adds a nested IEEE attribute to the list of DCB attributes. The policy is, [DCB_ATTR_IFNAME] [DCB_ATTR_STATE] ... [DCB_ATTR_IEEE] [DCB_ATTR_IEEE_ETS] [DCB_ATTR_IEEE_PFC] [DCB_ATTR_IEEE_APP_TABLE] [DCB_ATTR_IEEE_APP] ... The following dcbnl_rtnl_ops routines were added to handle the IEEE standard, int (*ieee_getets) (struct net_device *, struct ieee_ets *); int (*ieee_setets) (struct net_device *, struct ieee_ets *); int (*ieee_getpfc) (struct net_device *, struct ieee_pfc *); int (*ieee_setpfc) (struct net_device *, struct ieee_pfc *); int (*ieee_getapp) (struct net_device *, struct dcb_app *); int (*ieee_setapp) (struct net_device *, struct dcb_app *); Signed-off-by: John Fastabend Signed-off-by: David S. Miller --- include/linux/dcbnl.h | 106 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 106 insertions(+) (limited to 'include/linux') diff --git a/include/linux/dcbnl.h b/include/linux/dcbnl.h index 8723491f7dfd..287b5618e296 100644 --- a/include/linux/dcbnl.h +++ b/include/linux/dcbnl.h @@ -22,6 +22,87 @@ #include +/* IEEE 802.1Qaz std supported values */ +#define IEEE_8021QAZ_MAX_TCS 8 + +/* This structure contains the IEEE 802.1Qaz ETS managed object + * + * @willing: willing bit in ETS configuratin TLV + * @ets_cap: indicates supported capacity of ets feature + * @cbs: credit based shaper ets algorithm supported + * @tc_tx_bw: tc tx bandwidth indexed by traffic class + * @tc_rx_bw: tc rx bandwidth indexed by traffic class + * @tc_tsa: TSA Assignment table, indexed by traffic class + * @prio_tc: priority assignment table mapping 8021Qp to traffic class + * @tc_reco_bw: recommended tc bandwidth indexed by traffic class for TLV + * @tc_reco_tsa: recommended tc bandwidth indexed by traffic class for TLV + * @reco_prio_tc: recommended tc tx bandwidth indexed by traffic class for TLV + * + * Recommended values are used to set fields in the ETS recommendation TLV + * with hardware offloaded LLDP. + * + * ---- + * TSA Assignment 8 bit identifiers + * 0 strict priority + * 1 credit-based shaper + * 2 enhanced transmission selection + * 3-254 reserved + * 255 vendor specific + */ +struct ieee_ets { + __u8 willing; + __u8 ets_cap; + __u8 cbs; + __u8 tc_tx_bw[IEEE_8021QAZ_MAX_TCS]; + __u8 tc_rx_bw[IEEE_8021QAZ_MAX_TCS]; + __u8 tc_tsa[IEEE_8021QAZ_MAX_TCS]; + __u8 prio_tc[IEEE_8021QAZ_MAX_TCS]; + __u8 tc_reco_bw[IEEE_8021QAZ_MAX_TCS]; + __u8 tc_reco_tsa[IEEE_8021QAZ_MAX_TCS]; + __u8 reco_prio_tc[IEEE_8021QAZ_MAX_TCS]; +}; + +/* This structure contains the IEEE 802.1Qaz PFC managed object + * + * @pfc_cap: Indicates the number of traffic classes on the local device + * that may simultaneously have PFC enabled. + * @pfc_en: bitmap indicating pfc enabled traffic classes + * @mbc: enable macsec bypass capability + * @delay: the allowance made for a round-trip propagation delay of the + * link in bits. + * @requests: count of the sent pfc frames + * @indications: count of the received pfc frames + */ +struct ieee_pfc { + __u8 pfc_cap; + __u8 pfc_en; + __u8 mbc; + __u16 delay; + __u64 requests[IEEE_8021QAZ_MAX_TCS]; + __u64 indications[IEEE_8021QAZ_MAX_TCS]; +}; + +/* This structure contains the IEEE 802.1Qaz APP managed object + * + * @selector: protocol identifier type + * @protocol: protocol of type indicated + * @priority: 3-bit unsigned integer indicating priority + * + * ---- + * Selector field values + * 0 Reserved + * 1 Ethertype + * 2 Well known port number over TCP or SCTP + * 3 Well known port number over UDP or DCCP + * 4 Well known port number over TCP, SCTP, UDP, or DCCP + * 5-7 Reserved + */ +struct dcb_app { + __u8 selector; + __u32 protocol; + __u8 priority; +}; + struct dcbmsg { __u8 dcb_family; __u8 cmd; @@ -50,6 +131,8 @@ struct dcbmsg { * @DCB_CMD_SBCN: get backward congestion notification configration. * @DCB_CMD_GAPP: get application protocol configuration * @DCB_CMD_SAPP: set application protocol configuration + * @DCB_CMD_IEEE_SET: set IEEE 802.1Qaz configuration + * @DCB_CMD_IEEE_GET: get IEEE 802.1Qaz configuration */ enum dcbnl_commands { DCB_CMD_UNDEFINED, @@ -83,6 +166,9 @@ enum dcbnl_commands { DCB_CMD_GAPP, DCB_CMD_SAPP, + DCB_CMD_IEEE_SET, + DCB_CMD_IEEE_GET, + __DCB_CMD_ENUM_MAX, DCB_CMD_MAX = __DCB_CMD_ENUM_MAX - 1, }; @@ -102,6 +188,7 @@ enum dcbnl_commands { * @DCB_ATTR_CAP: DCB capabilities of the device (NLA_NESTED) * @DCB_ATTR_NUMTCS: number of traffic classes supported (NLA_NESTED) * @DCB_ATTR_BCN: backward congestion notification configuration (NLA_NESTED) + * @DCB_ATTR_IEEE: IEEE 802.1Qaz supported attributes (NLA_NESTED) */ enum dcbnl_attrs { DCB_ATTR_UNDEFINED, @@ -119,10 +206,29 @@ enum dcbnl_attrs { DCB_ATTR_BCN, DCB_ATTR_APP, + /* IEEE std attributes */ + DCB_ATTR_IEEE, + __DCB_ATTR_ENUM_MAX, DCB_ATTR_MAX = __DCB_ATTR_ENUM_MAX - 1, }; +enum ieee_attrs { + DCB_ATTR_IEEE_UNSPEC, + DCB_ATTR_IEEE_ETS, + DCB_ATTR_IEEE_PFC, + DCB_ATTR_IEEE_APP_TABLE, + __DCB_ATTR_IEEE_MAX +}; +#define DCB_ATTR_IEEE_MAX (__DCB_ATTR_IEEE_MAX - 1) + +enum ieee_attrs_app { + DCB_ATTR_IEEE_APP_UNSPEC, + DCB_ATTR_IEEE_APP, + __DCB_ATTR_IEEE_APP_MAX +}; +#define DCB_ATTR_IEEE_APP_MAX (__DCB_ATTR_IEEE_APP_MAX - 1) + /** * enum dcbnl_pfc_attrs - DCB Priority Flow Control user priority nested attrs * -- cgit v1.2.3 From 9ab933ab2cc80f04690d6aa385b1110075c5e507 Mon Sep 17 00:00:00 2001 From: John Fastabend Date: Thu, 30 Dec 2010 09:26:31 +0000 Subject: dcbnl: add appliction tlv handlers This patch adds application tlv handlers. Networking stacks may use the application priority to set the skb priority of their stack using the negoatiated dcbx priority. This patch provides the dcb_{get|set}app() routines for the stack to query these parameters. Notice lower layer drivers can use the dcbnl_ops routines if additional handling is needed. Perhaps in the firmware case for example Signed-off-by: John Fastabend Signed-off-by: Shmulik Ravid Signed-off-by: David S. Miller --- include/linux/dcbnl.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/dcbnl.h b/include/linux/dcbnl.h index 287b5618e296..775bdb4465bf 100644 --- a/include/linux/dcbnl.h +++ b/include/linux/dcbnl.h @@ -82,7 +82,9 @@ struct ieee_pfc { __u64 indications[IEEE_8021QAZ_MAX_TCS]; }; -/* This structure contains the IEEE 802.1Qaz APP managed object +/* This structure contains the IEEE 802.1Qaz APP managed object. This + * object is also used for the CEE std as well. There is no difference + * between the objects. * * @selector: protocol identifier type * @protocol: protocol of type indicated -- cgit v1.2.3 From 6241b6259b16aa390ff4bf50f520685b3801200b Mon Sep 17 00:00:00 2001 From: Shmulik Ravid Date: Thu, 30 Dec 2010 06:26:48 +0000 Subject: dcbnl: adding DCBX engine capability Adding an optional DCBX capability and a pair for get-set routines for setting the device DCBX mode. The DCBX capability is a bit field of supported attributes. The user is expected to set the DCBX mode with a subset of the advertised attributes. This patch is dependent on the following patches: [net-next-2.6 PATCH 1/3] dcbnl: add support for ieee8021Qaz attributes [net-next-2.6 PATCH 2/3] dcbnl: add appliction tlv handlers [net-next-2.6 PATCH 3/3] net_dcb: add application notifiers Signed-off-by: Shmulik Ravid Acked-by: John Fastabend Signed-off-by: David S. Miller --- include/linux/dcbnl.h | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) (limited to 'include/linux') diff --git a/include/linux/dcbnl.h b/include/linux/dcbnl.h index 775bdb4465bf..16eea36d8934 100644 --- a/include/linux/dcbnl.h +++ b/include/linux/dcbnl.h @@ -135,6 +135,8 @@ struct dcbmsg { * @DCB_CMD_SAPP: set application protocol configuration * @DCB_CMD_IEEE_SET: set IEEE 802.1Qaz configuration * @DCB_CMD_IEEE_GET: get IEEE 802.1Qaz configuration + * @DCB_CMD_GDCBX: get DCBX engine configuration + * @DCB_CMD_SDCBX: set DCBX engine configuration */ enum dcbnl_commands { DCB_CMD_UNDEFINED, @@ -171,6 +173,9 @@ enum dcbnl_commands { DCB_CMD_IEEE_SET, DCB_CMD_IEEE_GET, + DCB_CMD_GDCBX, + DCB_CMD_SDCBX, + __DCB_CMD_ENUM_MAX, DCB_CMD_MAX = __DCB_CMD_ENUM_MAX - 1, }; @@ -191,6 +196,7 @@ enum dcbnl_commands { * @DCB_ATTR_NUMTCS: number of traffic classes supported (NLA_NESTED) * @DCB_ATTR_BCN: backward congestion notification configuration (NLA_NESTED) * @DCB_ATTR_IEEE: IEEE 802.1Qaz supported attributes (NLA_NESTED) + * @DCB_ATTR_DCBX: DCBX engine configuration in the device (NLA_U8) */ enum dcbnl_attrs { DCB_ATTR_UNDEFINED, @@ -211,6 +217,8 @@ enum dcbnl_attrs { /* IEEE std attributes */ DCB_ATTR_IEEE, + DCB_ATTR_DCBX, + __DCB_ATTR_ENUM_MAX, DCB_ATTR_MAX = __DCB_ATTR_ENUM_MAX - 1, }; @@ -370,6 +378,8 @@ enum dcbnl_tc_attrs { * @DCB_CAP_ATTR_GSP: (NLA_U8) device supports group strict priority * @DCB_CAP_ATTR_BCN: (NLA_U8) device supports Backwards Congestion * Notification + * @DCB_CAP_ATTR_DCBX: (NLA_U8) device supports DCBX engine + * */ enum dcbnl_cap_attrs { DCB_CAP_ATTR_UNDEFINED, @@ -381,11 +391,44 @@ enum dcbnl_cap_attrs { DCB_CAP_ATTR_PFC_TCS, DCB_CAP_ATTR_GSP, DCB_CAP_ATTR_BCN, + DCB_CAP_ATTR_DCBX, __DCB_CAP_ATTR_ENUM_MAX, DCB_CAP_ATTR_MAX = __DCB_CAP_ATTR_ENUM_MAX - 1, }; +/** + * DCBX capability flags + * + * @DCB_CAP_DCBX_HOST: DCBX negotiation is performed by the host LLDP agent. + * 'set' routines are used to configure the device with + * the negotiated parameters + * + * @DCB_CAP_DCBX_LLD_MANAGED: DCBX negotiation is not performed in the host but + * by another entity + * 'get' routines are used to retrieve the + * negotiated parameters + * 'set' routines can be used to set the initial + * negotiation configuration + * + * @DCB_CAP_DCBX_VER_CEE: for a non-host DCBX engine, indicates the engine + * supports the CEE protocol flavor + * + * @DCB_CAP_DCBX_VER_IEEE: for a non-host DCBX engine, indicates the engine + * supports the IEEE protocol flavor + * + * @DCB_CAP_DCBX_STATIC: for a non-host DCBX engine, indicates the engine + * supports static configuration (i.e no actual + * negotiation is performed negotiated parameters equal + * the initial configuration) + * + */ +#define DCB_CAP_DCBX_HOST 0x01 +#define DCB_CAP_DCBX_LLD_MANAGED 0x02 +#define DCB_CAP_DCBX_VER_CEE 0x04 +#define DCB_CAP_DCBX_VER_IEEE 0x08 +#define DCB_CAP_DCBX_STATIC 0x10 + /** * enum dcbnl_numtcs_attrs - number of traffic classes * -- cgit v1.2.3 From ea45fe4e176a42d2396878f530cfdc8265bef37b Mon Sep 17 00:00:00 2001 From: Shmulik Ravid Date: Thu, 30 Dec 2010 06:26:55 +0000 Subject: dcbnl: adding DCBX feature flags get-set Adding a pair of set-get routines to dcbnl for setting the negotiation flags of the various DCB features. Conforms to the CEE flavor of DCBX The user sets these flags (enable, advertise, willing) for each feature to be used by the DCBX engine. The 'get' routine returns which of the features is enabled after the negotiation. This patch is dependent on the following patches: [net-next-2.6 PATCH 1/3] dcbnl: add support for ieee8021Qaz attributes [net-next-2.6 PATCH 2/3] dcbnl: add appliction tlv handlers [net-next-2.6 PATCH 3/3] net_dcb: add application notifiers Signed-off-by: Shmulik Ravid Signed-off-by: David S. Miller --- include/linux/dcbnl.h | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) (limited to 'include/linux') diff --git a/include/linux/dcbnl.h b/include/linux/dcbnl.h index 16eea36d8934..68cd248f6d3e 100644 --- a/include/linux/dcbnl.h +++ b/include/linux/dcbnl.h @@ -137,6 +137,8 @@ struct dcbmsg { * @DCB_CMD_IEEE_GET: get IEEE 802.1Qaz configuration * @DCB_CMD_GDCBX: get DCBX engine configuration * @DCB_CMD_SDCBX: set DCBX engine configuration + * @DCB_CMD_GFEATCFG: get DCBX features flags + * @DCB_CMD_SFEATCFG: set DCBX features negotiation flags */ enum dcbnl_commands { DCB_CMD_UNDEFINED, @@ -176,6 +178,9 @@ enum dcbnl_commands { DCB_CMD_GDCBX, DCB_CMD_SDCBX, + DCB_CMD_GFEATCFG, + DCB_CMD_SFEATCFG, + __DCB_CMD_ENUM_MAX, DCB_CMD_MAX = __DCB_CMD_ENUM_MAX - 1, }; @@ -197,6 +202,7 @@ enum dcbnl_commands { * @DCB_ATTR_BCN: backward congestion notification configuration (NLA_NESTED) * @DCB_ATTR_IEEE: IEEE 802.1Qaz supported attributes (NLA_NESTED) * @DCB_ATTR_DCBX: DCBX engine configuration in the device (NLA_U8) + * @DCB_ATTR_FEATCFG: DCBX features flags (NLA_NESTED) */ enum dcbnl_attrs { DCB_ATTR_UNDEFINED, @@ -218,6 +224,7 @@ enum dcbnl_attrs { DCB_ATTR_IEEE, DCB_ATTR_DCBX, + DCB_ATTR_FEATCFG, __DCB_ATTR_ENUM_MAX, DCB_ATTR_MAX = __DCB_ATTR_ENUM_MAX - 1, @@ -506,4 +513,30 @@ enum dcbnl_app_attrs { DCB_APP_ATTR_MAX = __DCB_APP_ATTR_ENUM_MAX - 1, }; +/** + * enum dcbnl_featcfg_attrs - features conifiguration flags + * + * @DCB_FEATCFG_ATTR_UNDEFINED: unspecified attribute to catch errors + * @DCB_FEATCFG_ATTR_ALL: (NLA_FLAG) all features configuration attributes + * @DCB_FEATCFG_ATTR_PG: (NLA_U8) configuration flags for priority groups + * @DCB_FEATCFG_ATTR_PFC: (NLA_U8) configuration flags for priority + * flow control + * @DCB_FEATCFG_ATTR_APP: (NLA_U8) configuration flags for application TLV + * + */ +#define DCB_FEATCFG_ERROR 0x01 /* error in feature resolution */ +#define DCB_FEATCFG_ENABLE 0x02 /* enable feature */ +#define DCB_FEATCFG_WILLING 0x04 /* feature is willing */ +#define DCB_FEATCFG_ADVERTISE 0x08 /* advertise feature */ +enum dcbnl_featcfg_attrs { + DCB_FEATCFG_ATTR_UNDEFINED, + DCB_FEATCFG_ATTR_ALL, + DCB_FEATCFG_ATTR_PG, + DCB_FEATCFG_ATTR_PFC, + DCB_FEATCFG_ATTR_APP, + + __DCB_FEATCFG_ATTR_ENUM_MAX, + DCB_FEATCFG_ATTR_MAX = __DCB_FEATCFG_ATTR_ENUM_MAX - 1, +}; + #endif /* __LINUX_DCBNL_H__ */ -- cgit v1.2.3 From a4f740cf33f7f6c164bbde3c0cdbcc77b0c4997c Mon Sep 17 00:00:00 2001 From: Grant Likely Date: Sat, 30 Oct 2010 11:49:09 -0400 Subject: of/flattree: Add of_flat_dt_match() helper function This patch adds of_flat_dt_match() which tests a node for compatibility with a list of values and converts the relevant powerpc platform code to use it. This approach simplifies the board support code a bit. Signed-off-by: Grant Likely Reviewed-by: Stephen Neuendorffer --- include/linux/of_fdt.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/of_fdt.h b/include/linux/of_fdt.h index 9ce5dfd2186a..ee96091f7d25 100644 --- a/include/linux/of_fdt.h +++ b/include/linux/of_fdt.h @@ -68,6 +68,8 @@ extern void *of_fdt_get_property(struct boot_param_header *blob, extern int of_fdt_is_compatible(struct boot_param_header *blob, unsigned long node, const char *compat); +extern int of_fdt_match(struct boot_param_header *blob, unsigned long node, + const char **compat); extern void of_fdt_unflatten_tree(unsigned long *blob, struct device_node **mynodes); @@ -84,6 +86,7 @@ extern int of_scan_flat_dt(int (*it)(unsigned long node, const char *uname, extern void *of_get_flat_dt_prop(unsigned long node, const char *name, unsigned long *size); extern int of_flat_dt_is_compatible(unsigned long node, const char *name); +extern int of_flat_dt_match(unsigned long node, const char **matches); extern unsigned long of_get_flat_dt_root(void); extern int early_init_dt_scan_chosen(unsigned long node, const char *uname, -- cgit v1.2.3 From 51f98a8d70583b18cb08b19353aeed5efb0244af Mon Sep 17 00:00:00 2001 From: Allan Stephens Date: Fri, 31 Dec 2010 18:59:16 +0000 Subject: tipc: Remove prototype code for supporting multiple zones Eliminates routines, data structures, and files that were intended to allows TIPC to support a network containing multiple zones. Currently, TIPC supports only networks consisting of a single cluster within a single zone, so this code is unnecessary. Signed-off-by: Allan Stephens Signed-off-by: Paul Gortmaker Signed-off-by: David S. Miller --- include/linux/tipc_config.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/tipc_config.h b/include/linux/tipc_config.h index 9cde86c32412..fa3aeaafeab1 100644 --- a/include/linux/tipc_config.h +++ b/include/linux/tipc_config.h @@ -94,7 +94,7 @@ #define TIPC_CMD_GET_MAX_PORTS 0x4004 /* tx none, rx unsigned */ #define TIPC_CMD_GET_MAX_PUBL 0x4005 /* tx none, rx unsigned */ #define TIPC_CMD_GET_MAX_SUBSCR 0x4006 /* tx none, rx unsigned */ -#define TIPC_CMD_GET_MAX_ZONES 0x4007 /* tx none, rx unsigned */ +#define TIPC_CMD_GET_MAX_ZONES 0x4007 /* obsoleted */ #define TIPC_CMD_GET_MAX_CLUSTERS 0x4008 /* tx none, rx unsigned */ #define TIPC_CMD_GET_MAX_NODES 0x4009 /* tx none, rx unsigned */ #define TIPC_CMD_GET_MAX_SLAVES 0x400A /* tx none, rx unsigned */ @@ -130,7 +130,7 @@ #define TIPC_CMD_SET_MAX_PORTS 0x8004 /* tx unsigned, rx none */ #define TIPC_CMD_SET_MAX_PUBL 0x8005 /* tx unsigned, rx none */ #define TIPC_CMD_SET_MAX_SUBSCR 0x8006 /* tx unsigned, rx none */ -#define TIPC_CMD_SET_MAX_ZONES 0x8007 /* tx unsigned, rx none */ +#define TIPC_CMD_SET_MAX_ZONES 0x8007 /* obsoleted */ #define TIPC_CMD_SET_MAX_CLUSTERS 0x8008 /* tx unsigned, rx none */ #define TIPC_CMD_SET_MAX_NODES 0x8009 /* tx unsigned, rx none */ #define TIPC_CMD_SET_MAX_SLAVES 0x800A /* tx unsigned, rx none */ -- cgit v1.2.3 From 08c80e9a031df0a8f0269477a32f5eae47d7a146 Mon Sep 17 00:00:00 2001 From: Allan Stephens Date: Fri, 31 Dec 2010 18:59:17 +0000 Subject: tipc: Remove prototype code for supporting slave nodes Simplifies routines and data structures that were intended to allow TIPC to support slave nodes (i.e. nodes that did not have links to all of the other nodes in its cluster, forcing TIPC to route messages that it could not deliver directly through a non-slave node). Currently, TIPC supports only networks containing non-slave nodes, so this code is unnecessary. Note: The latest edition of the TIPC 2.0 Specification has eliminated the concept of slave nodes entirely. Signed-off-by: Allan Stephens Signed-off-by: Paul Gortmaker Signed-off-by: David S. Miller --- include/linux/tipc_config.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/tipc_config.h b/include/linux/tipc_config.h index fa3aeaafeab1..dcc2b8796d0a 100644 --- a/include/linux/tipc_config.h +++ b/include/linux/tipc_config.h @@ -97,7 +97,7 @@ #define TIPC_CMD_GET_MAX_ZONES 0x4007 /* obsoleted */ #define TIPC_CMD_GET_MAX_CLUSTERS 0x4008 /* tx none, rx unsigned */ #define TIPC_CMD_GET_MAX_NODES 0x4009 /* tx none, rx unsigned */ -#define TIPC_CMD_GET_MAX_SLAVES 0x400A /* tx none, rx unsigned */ +#define TIPC_CMD_GET_MAX_SLAVES 0x400A /* obsoleted */ #define TIPC_CMD_GET_NETID 0x400B /* tx none, rx unsigned */ #define TIPC_CMD_ENABLE_BEARER 0x4101 /* tx bearer_config, rx none */ @@ -133,7 +133,7 @@ #define TIPC_CMD_SET_MAX_ZONES 0x8007 /* obsoleted */ #define TIPC_CMD_SET_MAX_CLUSTERS 0x8008 /* tx unsigned, rx none */ #define TIPC_CMD_SET_MAX_NODES 0x8009 /* tx unsigned, rx none */ -#define TIPC_CMD_SET_MAX_SLAVES 0x800A /* tx unsigned, rx none */ +#define TIPC_CMD_SET_MAX_SLAVES 0x800A /* obsoleted */ #define TIPC_CMD_SET_NETID 0x800B /* tx unsigned, rx none */ /* -- cgit v1.2.3 From 51a8e4dee7653698ba4c6e7de71053665f075273 Mon Sep 17 00:00:00 2001 From: Allan Stephens Date: Fri, 31 Dec 2010 18:59:18 +0000 Subject: tipc: Remove prototype code for supporting inter-cluster routing Eliminates routines and data structures that were intended to allow TIPC to route messages to other clusters. Currently, TIPC supports only networks consisting of a single cluster within a single zone, so this code is unnecessary. Signed-off-by: Allan Stephens Signed-off-by: Paul Gortmaker Signed-off-by: David S. Miller --- include/linux/tipc_config.h | 5 ----- 1 file changed, 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/tipc_config.h b/include/linux/tipc_config.h index dcc2b8796d0a..1f38df1202ba 100644 --- a/include/linux/tipc_config.h +++ b/include/linux/tipc_config.h @@ -254,11 +254,6 @@ struct tipc_link_create { struct tipc_media_addr peer_addr; char bearer_name[TIPC_MAX_BEARER_NAME]; }; - -struct tipc_route_info { - __u32 dest; - __u32 router; -}; #endif /* -- cgit v1.2.3 From 8f92df6ad49da958d97e171762d0a97a3dc738f1 Mon Sep 17 00:00:00 2001 From: Allan Stephens Date: Fri, 31 Dec 2010 18:59:19 +0000 Subject: tipc: Remove prototype code for supporting multiple clusters Eliminates routines, data structures, and files that were intended to allow TIPC to support a network containing multiple clusters. Currently, TIPC supports only networks consisting of a single cluster within a single zone, so this code is unnecessary. Signed-off-by: Allan Stephens Signed-off-by: Paul Gortmaker Signed-off-by: David S. Miller --- include/linux/tipc_config.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/tipc_config.h b/include/linux/tipc_config.h index 1f38df1202ba..677aa13dc5d7 100644 --- a/include/linux/tipc_config.h +++ b/include/linux/tipc_config.h @@ -95,7 +95,7 @@ #define TIPC_CMD_GET_MAX_PUBL 0x4005 /* tx none, rx unsigned */ #define TIPC_CMD_GET_MAX_SUBSCR 0x4006 /* tx none, rx unsigned */ #define TIPC_CMD_GET_MAX_ZONES 0x4007 /* obsoleted */ -#define TIPC_CMD_GET_MAX_CLUSTERS 0x4008 /* tx none, rx unsigned */ +#define TIPC_CMD_GET_MAX_CLUSTERS 0x4008 /* obsoleted */ #define TIPC_CMD_GET_MAX_NODES 0x4009 /* tx none, rx unsigned */ #define TIPC_CMD_GET_MAX_SLAVES 0x400A /* obsoleted */ #define TIPC_CMD_GET_NETID 0x400B /* tx none, rx unsigned */ @@ -131,7 +131,7 @@ #define TIPC_CMD_SET_MAX_PUBL 0x8005 /* tx unsigned, rx none */ #define TIPC_CMD_SET_MAX_SUBSCR 0x8006 /* tx unsigned, rx none */ #define TIPC_CMD_SET_MAX_ZONES 0x8007 /* obsoleted */ -#define TIPC_CMD_SET_MAX_CLUSTERS 0x8008 /* tx unsigned, rx none */ +#define TIPC_CMD_SET_MAX_CLUSTERS 0x8008 /* obsoleted */ #define TIPC_CMD_SET_MAX_NODES 0x8009 /* tx unsigned, rx none */ #define TIPC_CMD_SET_MAX_SLAVES 0x800A /* obsoleted */ #define TIPC_CMD_SET_NETID 0x800B /* tx unsigned, rx none */ -- cgit v1.2.3 From 0e65967e33be61e5f67727edd4ea829b47676fc0 Mon Sep 17 00:00:00 2001 From: Allan Stephens Date: Fri, 31 Dec 2010 18:59:32 +0000 Subject: tipc: cleanup various cosmetic whitespace issues Cleans up TIPC's source code to eliminate deviations from generally accepted coding conventions relating to leading/trailing white space and white space around commas, braces, cases, and sizeof. These changes are purely cosmetic and do not alter the operation of TIPC in any way. Signed-off-by: Allan Stephens Signed-off-by: Paul Gortmaker Signed-off-by: David S. Miller --- include/linux/tipc.h | 18 +++++++------- include/linux/tipc_config.h | 59 ++++++++++++++++++++++----------------------- 2 files changed, 38 insertions(+), 39 deletions(-) (limited to 'include/linux') diff --git a/include/linux/tipc.h b/include/linux/tipc.h index d10614b29d59..1eefa3f6d1f4 100644 --- a/include/linux/tipc.h +++ b/include/linux/tipc.h @@ -1,6 +1,6 @@ /* * include/linux/tipc.h: Include file for TIPC socket interface - * + * * Copyright (c) 2003-2006, Ericsson AB * Copyright (c) 2005, Wind River Systems * All rights reserved. @@ -42,7 +42,7 @@ /* * TIPC addressing primitives */ - + struct tipc_portid { __u32 ref; __u32 node; @@ -89,7 +89,7 @@ static inline unsigned int tipc_node(__u32 addr) #define TIPC_TOP_SRV 1 /* topology service name type */ #define TIPC_RESERVED_TYPES 64 /* lowest user-publishable name type */ -/* +/* * Publication scopes when binding port names and port name sequences */ @@ -112,7 +112,7 @@ static inline unsigned int tipc_node(__u32 addr) #define TIPC_HIGH_IMPORTANCE 2 #define TIPC_CRITICAL_IMPORTANCE 3 -/* +/* * Msg rejection/connection shutdown reasons */ @@ -127,9 +127,9 @@ static inline unsigned int tipc_node(__u32 addr) * TIPC topology subscription service definitions */ -#define TIPC_SUB_PORTS 0x01 /* filter for port availability */ -#define TIPC_SUB_SERVICE 0x02 /* filter for service availability */ -#define TIPC_SUB_CANCEL 0x04 /* cancel a subscription */ +#define TIPC_SUB_PORTS 0x01 /* filter for port availability */ +#define TIPC_SUB_SERVICE 0x02 /* filter for service availability */ +#define TIPC_SUB_CANCEL 0x04 /* cancel a subscription */ #if 0 /* The following filter options are not currently implemented */ #define TIPC_SUB_NO_BIND_EVTS 0x04 /* filter out "publish" events */ @@ -137,12 +137,12 @@ static inline unsigned int tipc_node(__u32 addr) #define TIPC_SUB_SINGLE_EVT 0x10 /* expire after first event */ #endif -#define TIPC_WAIT_FOREVER ~0 /* timeout for permanent subscription */ +#define TIPC_WAIT_FOREVER (~0) /* timeout for permanent subscription */ struct tipc_subscr { struct tipc_name_seq seq; /* name sequence of interest */ __u32 timeout; /* subscription duration (in ms) */ - __u32 filter; /* bitmask of filter options */ + __u32 filter; /* bitmask of filter options */ char usr_handle[8]; /* available for subscriber use */ }; diff --git a/include/linux/tipc_config.h b/include/linux/tipc_config.h index 677aa13dc5d7..7d42460a5e3c 100644 --- a/include/linux/tipc_config.h +++ b/include/linux/tipc_config.h @@ -1,6 +1,6 @@ /* * include/linux/tipc_config.h: Include file for TIPC configuration interface - * + * * Copyright (c) 2003-2006, Ericsson AB * Copyright (c) 2005-2007, Wind River Systems * All rights reserved. @@ -54,19 +54,19 @@ * which specify parameters or results for the operation. * * For many operations, the request and reply messages have a fixed number - * of TLVs (usually zero or one); however, some reply messages may return + * of TLVs (usually zero or one); however, some reply messages may return * a variable number of TLVs. A failed request is denoted by the presence * of an "error string" TLV in the reply message instead of the TLV(s) the * reply should contain if the request succeeds. */ - -/* + +/* * Public commands: * May be issued by any process. - * Accepted by own node, or by remote node only if remote management enabled. + * Accepted by own node, or by remote node only if remote management enabled. */ - -#define TIPC_CMD_NOOP 0x0000 /* tx none, rx none */ + +#define TIPC_CMD_NOOP 0x0000 /* tx none, rx none */ #define TIPC_CMD_GET_NODES 0x0001 /* tx net_addr, rx node_info(s) */ #define TIPC_CMD_GET_MEDIA_NAMES 0x0002 /* tx none, rx media_name(s) */ #define TIPC_CMD_GET_BEARER_NAMES 0x0003 /* tx none, rx bearer_name(s) */ @@ -83,11 +83,11 @@ #define TIPC_CMD_GET_LINK_PEER 0x000D /* tx link_name, rx ? */ #endif -/* +/* * Protected commands: * May only be issued by "network administration capable" process. * Accepted by own node, or by remote node only if remote management enabled - * and this node is zone manager. + * and this node is zone manager. */ #define TIPC_CMD_GET_REMOTE_MNG 0x4003 /* tx none, rx unsigned */ @@ -116,10 +116,10 @@ #define TIPC_CMD_UNBLOCK_LINK 0x4106 /* tx link_name, rx none */ #endif -/* +/* * Private commands: * May only be issued by "network administration capable" process. - * Accepted by own node only; cannot be used on a remote node. + * Accepted by own node only; cannot be used on a remote node. */ #define TIPC_CMD_SET_NODE_ADDR 0x8001 /* tx net_addr, rx none */ @@ -156,20 +156,20 @@ #define TIPC_TLV_ULTRA_STRING 5 /* char[32768] (max) */ #define TIPC_TLV_ERROR_STRING 16 /* char[128] containing "error code" */ -#define TIPC_TLV_NET_ADDR 17 /* 32-bit integer denoting */ +#define TIPC_TLV_NET_ADDR 17 /* 32-bit integer denoting */ #define TIPC_TLV_MEDIA_NAME 18 /* char[TIPC_MAX_MEDIA_NAME] */ #define TIPC_TLV_BEARER_NAME 19 /* char[TIPC_MAX_BEARER_NAME] */ #define TIPC_TLV_LINK_NAME 20 /* char[TIPC_MAX_LINK_NAME] */ #define TIPC_TLV_NODE_INFO 21 /* struct tipc_node_info */ #define TIPC_TLV_LINK_INFO 22 /* struct tipc_link_info */ -#define TIPC_TLV_BEARER_CONFIG 23 /* struct tipc_bearer_config */ -#define TIPC_TLV_LINK_CONFIG 24 /* struct tipc_link_config */ +#define TIPC_TLV_BEARER_CONFIG 23 /* struct tipc_bearer_config */ +#define TIPC_TLV_LINK_CONFIG 24 /* struct tipc_link_config */ #define TIPC_TLV_NAME_TBL_QUERY 25 /* struct tipc_name_table_query */ -#define TIPC_TLV_PORT_REF 26 /* 32-bit port reference */ +#define TIPC_TLV_PORT_REF 26 /* 32-bit port reference */ /* * Maximum sizes of TIPC bearer-related names (including terminating NUL) - */ + */ #define TIPC_MAX_MEDIA_NAME 16 /* format = media */ #define TIPC_MAX_IF_NAME 16 /* format = interface */ @@ -234,7 +234,7 @@ struct tipc_name_table_query { }; /* - * The error string TLV is a null-terminated string describing the cause + * The error string TLV is a null-terminated string describing the cause * of the request failure. To simplify error processing (and to save space) * the first character of the string can be a special error code character * (lying by the range 0x80 to 0xFF) which represents a pre-defined reason. @@ -258,7 +258,7 @@ struct tipc_link_create { /* * A TLV consists of a descriptor, followed by the TLV value. - * TLV descriptor fields are stored in network byte order; + * TLV descriptor fields are stored in network byte order; * TLV values must also be stored in network byte order (where applicable). * TLV descriptors must be aligned to addresses which are multiple of 4, * so up to 3 bytes of padding may exist at the end of the TLV value area. @@ -294,7 +294,7 @@ static inline int TLV_OK(const void *tlv, __u16 space) static inline int TLV_CHECK(const void *tlv, __u16 space, __u16 exp_type) { - return TLV_OK(tlv, space) && + return TLV_OK(tlv, space) && (ntohs(((struct tlv_desc *)tlv)->tlv_type) == exp_type); } @@ -313,7 +313,7 @@ static inline int TLV_SET(void *tlv, __u16 type, void *data, __u16 len) } /* - * A TLV list descriptor simplifies processing of messages + * A TLV list descriptor simplifies processing of messages * containing multiple TLVs. */ @@ -322,15 +322,15 @@ struct tlv_list_desc { __u32 tlv_space; /* # bytes from curr TLV to list end */ }; -static inline void TLV_LIST_INIT(struct tlv_list_desc *list, +static inline void TLV_LIST_INIT(struct tlv_list_desc *list, void *data, __u32 space) { list->tlv_ptr = (struct tlv_desc *)data; list->tlv_space = space; } - + static inline int TLV_LIST_EMPTY(struct tlv_list_desc *list) -{ +{ return (list->tlv_space == 0); } @@ -348,7 +348,7 @@ static inline void TLV_LIST_STEP(struct tlv_list_desc *list) { __u16 tlv_space = TLV_ALIGN(ntohs(list->tlv_ptr->tlv_len)); - list->tlv_ptr = (struct tlv_desc *)((char *)list->tlv_ptr + tlv_space); + list->tlv_ptr = (struct tlv_desc *)((char *)list->tlv_ptr + tlv_space); list->tlv_space -= tlv_space; } @@ -372,15 +372,14 @@ struct tipc_genlmsghdr { #define TIPC_GENL_HDRLEN NLMSG_ALIGN(sizeof(struct tipc_genlmsghdr)) /* - * Configuration messages exchanged via TIPC sockets use the TIPC configuration - * message header, which is defined below. This structure is analogous - * to the Netlink message header, but fields are stored in network byte order - * and no padding is permitted between the header and the message data + * Configuration messages exchanged via TIPC sockets use the TIPC configuration + * message header, which is defined below. This structure is analogous + * to the Netlink message header, but fields are stored in network byte order + * and no padding is permitted between the header and the message data * that follows. */ -struct tipc_cfg_msg_hdr -{ +struct tipc_cfg_msg_hdr { __be32 tcm_len; /* Message length (including header) */ __be16 tcm_type; /* Command type */ __be16 tcm_flags; /* Additional flags */ -- cgit v1.2.3 From 8f33d5277fada0291ea495f7fd44a3e7b7aa41d3 Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Wed, 22 Dec 2010 14:46:46 +0100 Subject: dmaengine: provide dummy functions for DMA_ENGINE=n This lets drivers, optionally using the dmaengine, build with DMA_ENGINE unselected. Signed-off-by: Guennadi Liakhovetski Signed-off-by: Dan Williams --- include/linux/dmaengine.h | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index 9d8688b92d8b..8cd00ad98d37 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -824,6 +824,8 @@ enum dma_status dma_sync_wait(struct dma_chan *chan, dma_cookie_t cookie); #ifdef CONFIG_DMA_ENGINE enum dma_status dma_wait_for_async_tx(struct dma_async_tx_descriptor *tx); void dma_issue_pending_all(void); +struct dma_chan *__dma_request_channel(dma_cap_mask_t *mask, dma_filter_fn fn, void *fn_param); +void dma_release_channel(struct dma_chan *chan); #else static inline enum dma_status dma_wait_for_async_tx(struct dma_async_tx_descriptor *tx) { @@ -831,7 +833,14 @@ static inline enum dma_status dma_wait_for_async_tx(struct dma_async_tx_descript } static inline void dma_issue_pending_all(void) { - do { } while (0); +} +static inline struct dma_chan *__dma_request_channel(dma_cap_mask_t *mask, + dma_filter_fn fn, void *fn_param) +{ + return NULL; +} +static inline void dma_release_channel(struct dma_chan *chan) +{ } #endif @@ -842,8 +851,6 @@ void dma_async_device_unregister(struct dma_device *device); void dma_run_dependencies(struct dma_async_tx_descriptor *tx); struct dma_chan *dma_find_channel(enum dma_transaction_type tx_type); #define dma_request_channel(mask, x, y) __dma_request_channel(&(mask), x, y) -struct dma_chan *__dma_request_channel(dma_cap_mask_t *mask, dma_filter_fn fn, void *fn_param); -void dma_release_channel(struct dma_chan *chan); /* --- Helper iov-locking functions --- */ -- cgit v1.2.3 From 68763c890eb2a60f9b50a061502f94e0cf20fdfe Mon Sep 17 00:00:00 2001 From: Michal Simek Date: Sun, 2 Jan 2011 22:54:09 +0000 Subject: trivial: Fix typo fault in netdevice.h Signed-off-by: Michal Simek Signed-off-by: David S. Miller --- include/linux/netdevice.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index cc916c5c3279..0f6b1c965815 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -732,7 +732,7 @@ struct xps_dev_maps { * neither operation. * * void (*ndo_vlan_rx_register)(struct net_device *dev, struct vlan_group *grp); - * If device support VLAN receive accleration + * If device support VLAN receive acceleration * (ie. dev->features & NETIF_F_HW_VLAN_RX), then this function is called * when vlan groups for the device changes. Note: grp is NULL * if no vlan's groups are being used. -- cgit v1.2.3 From 7b26e5ebd8b27b0126a84ae7f9a42aa8293d6c48 Mon Sep 17 00:00:00 2001 From: Francois-Xavier Le Bail Date: Tue, 4 Jan 2011 09:10:20 +0000 Subject: net: typos in comments in include/linux/igmp.h There are typos in comments in include/linux/igmp.h: 83 #define IGMP_HOST_MEMBERSHIP_QUERY 0x11 /* From RFC1112 */ 84 #define IGMP_HOST_MEMBERSHIP_REPORT 0x12 /* Ditto */ [snip] 88 #define IGMPV2_HOST_MEMBERSHIP_REPORT 0x16 /* V2 version of 0x11 */ 89 #define IGMP_HOST_LEAVE_MESSAGE 0x17 90 #define IGMPV3_HOST_MEMBERSHIP_REPORT 0x22 /* V3 version of 0x11 */ The line 88 and 90 are about REPORT messages. The IGMP_HOST_MEMBERSHIP_REPORT (IGMP V1) value is 0x12. So the comment on line 88 must be /* V2 version of 0x12 */, and the comment on line 90 must be /* V3 version of 0x12 */. Signed-off-by: Francois-Xavier Le Bail Signed-off-by: David S. Miller --- include/linux/igmp.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/igmp.h b/include/linux/igmp.h index c4987f265109..74cfcff0148b 100644 --- a/include/linux/igmp.h +++ b/include/linux/igmp.h @@ -85,9 +85,9 @@ struct igmpv3_query { #define IGMP_DVMRP 0x13 /* DVMRP routing */ #define IGMP_PIM 0x14 /* PIM routing */ #define IGMP_TRACE 0x15 -#define IGMPV2_HOST_MEMBERSHIP_REPORT 0x16 /* V2 version of 0x11 */ +#define IGMPV2_HOST_MEMBERSHIP_REPORT 0x16 /* V2 version of 0x12 */ #define IGMP_HOST_LEAVE_MESSAGE 0x17 -#define IGMPV3_HOST_MEMBERSHIP_REPORT 0x22 /* V3 version of 0x11 */ +#define IGMPV3_HOST_MEMBERSHIP_REPORT 0x22 /* V3 version of 0x12 */ #define IGMP_MTRACE_RESP 0x1e #define IGMP_MTRACE 0x1f -- cgit v1.2.3 From bdd5f05d91e8ae68075b812ce244c918d3d752cd Mon Sep 17 00:00:00 2001 From: "J. Bruce Fields" Date: Tue, 4 Jan 2011 13:31:45 -0500 Subject: SUNRPC: Remove more code when NFSD_DEPRECATED is not configured Signed-off-by: NeilBrown [bfields@redhat.com: moved svcauth_unix_purge outside ifdef's.] Signed-off-by: J. Bruce Fields --- include/linux/sunrpc/cache.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/sunrpc/cache.h b/include/linux/sunrpc/cache.h index 6950c981882d..c2aebe8eeffd 100644 --- a/include/linux/sunrpc/cache.h +++ b/include/linux/sunrpc/cache.h @@ -255,10 +255,13 @@ static inline time_t get_expiry(char **bpp) return rv - boot.tv_sec; } +#ifdef CONFIG_NFSD_DEPRECATED static inline void sunrpc_invalidate(struct cache_head *h, struct cache_detail *detail) { h->expiry_time = seconds_since_boot() - 1; detail->nextcheck = seconds_since_boot(); } +#endif /* CONFIG_NFSD_DEPRECATED */ + #endif /* _LINUX_SUNRPC_CACHE_H_ */ -- cgit v1.2.3 From 9e701c610923aaeac8b38b9202a686d1cc9ee35d Mon Sep 17 00:00:00 2001 From: "J. Bruce Fields" Date: Sun, 2 Jan 2011 21:56:36 -0500 Subject: svcrpc: simpler request dropping Currently we use -EAGAIN returns to determine when to drop a deferred request. On its own, that is error-prone, as it makes us treat -EAGAIN returns from other functions specially to prevent inadvertent dropping. So, use a flag on the request instead. Returning an error on request deferral is still required, to prevent further processing, but we no longer need worry that an error return on its own could result in a drop. Signed-off-by: J. Bruce Fields --- include/linux/sunrpc/svc.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h index 5a3085b9b394..d45c482b6444 100644 --- a/include/linux/sunrpc/svc.h +++ b/include/linux/sunrpc/svc.h @@ -269,6 +269,7 @@ struct svc_rqst { struct cache_req rq_chandle; /* handle passed to caches for * request delaying */ + bool rq_dropme; /* Catering to nfsd */ struct auth_domain * rq_client; /* RPC peer info */ struct auth_domain * rq_gssclient; /* "gss/"-style peer info */ -- cgit v1.2.3 From c45821d263a8a5109d69a9e8942b8d65bcd5f31a Mon Sep 17 00:00:00 2001 From: "J. Bruce Fields" Date: Sun, 31 Oct 2010 00:04:44 -0400 Subject: locks: eliminate fl_mylease callback The nfs server only supports read delegations for now, so we don't care how conflicts are determined. All we care is that unlocks are recognized as matching the leases they are meant to remove. After the last patch, a comparison of struct files will work for that purpose. So we no longer need this callback. Signed-off-by: J. Bruce Fields --- include/linux/fs.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index 090f0eacde29..73ce69f728e1 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1059,7 +1059,6 @@ struct lock_manager_operations { int (*fl_grant)(struct file_lock *, struct file_lock *, int); void (*fl_release_private)(struct file_lock *); void (*fl_break)(struct file_lock *); - int (*fl_mylease)(struct file_lock *, struct file_lock *); int (*fl_change)(struct file_lock **, int); }; -- cgit v1.2.3 From 2ca72e17e5acb1052c35c9faba609c2289ce7a92 Mon Sep 17 00:00:00 2001 From: "J. Bruce Fields" Date: Tue, 4 Jan 2011 17:37:15 -0500 Subject: nfsd4: move idmap and acl header files into fs/nfsd These are internal nfsd interfaces. Signed-off-by: J. Bruce Fields --- include/linux/nfs4_acl.h | 61 ------------------------------------------- include/linux/nfsd_idmap.h | 64 ---------------------------------------------- 2 files changed, 125 deletions(-) delete mode 100644 include/linux/nfs4_acl.h delete mode 100644 include/linux/nfsd_idmap.h (limited to 'include/linux') diff --git a/include/linux/nfs4_acl.h b/include/linux/nfs4_acl.h deleted file mode 100644 index c9c05a78e9bb..000000000000 --- a/include/linux/nfs4_acl.h +++ /dev/null @@ -1,61 +0,0 @@ -/* - * include/linux/nfs4_acl.c - * - * Common NFSv4 ACL handling definitions. - * - * Copyright (c) 2002 The Regents of the University of Michigan. - * All rights reserved. - * - * Marius Aamodt Eriksen - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the University nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE - * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR - * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#ifndef LINUX_NFS4_ACL_H -#define LINUX_NFS4_ACL_H - -#include - -/* Maximum ACL we'll accept from client; chosen (somewhat arbitrarily) to - * fit in a page: */ -#define NFS4_ACL_MAX 170 - -struct nfs4_acl *nfs4_acl_new(int); -int nfs4_acl_get_whotype(char *, u32); -int nfs4_acl_write_who(int who, char *p); -int nfs4_acl_permission(struct nfs4_acl *acl, uid_t owner, gid_t group, - uid_t who, u32 mask); - -#define NFS4_ACL_TYPE_DEFAULT 0x01 -#define NFS4_ACL_DIR 0x02 -#define NFS4_ACL_OWNER 0x04 - -struct nfs4_acl *nfs4_acl_posix_to_nfsv4(struct posix_acl *, - struct posix_acl *, unsigned int flags); -int nfs4_acl_nfsv4_to_posix(struct nfs4_acl *, struct posix_acl **, - struct posix_acl **, unsigned int flags); - -#endif /* LINUX_NFS4_ACL_H */ diff --git a/include/linux/nfsd_idmap.h b/include/linux/nfsd_idmap.h deleted file mode 100644 index d4a2ac18bd4c..000000000000 --- a/include/linux/nfsd_idmap.h +++ /dev/null @@ -1,64 +0,0 @@ -/* - * include/linux/nfsd_idmap.h - * - * Mapping of UID to name and vice versa. - * - * Copyright (c) 2002, 2003 The Regents of the University of - * Michigan. All rights reserved. -> * - * Marius Aamodt Eriksen - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the University nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE - * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR - * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#ifndef LINUX_NFSD_IDMAP_H -#define LINUX_NFSD_IDMAP_H - -#include -#include - -/* XXX from linux/nfs_idmap.h */ -#define IDMAP_NAMESZ 128 - -#ifdef CONFIG_NFSD_V4 -int nfsd_idmap_init(void); -void nfsd_idmap_shutdown(void); -#else -static inline int nfsd_idmap_init(void) -{ - return 0; -} -static inline void nfsd_idmap_shutdown(void) -{ -} -#endif - -int nfsd_map_name_to_uid(struct svc_rqst *, const char *, size_t, __u32 *); -int nfsd_map_name_to_gid(struct svc_rqst *, const char *, size_t, __u32 *); -int nfsd_map_uid_to_name(struct svc_rqst *, __u32, char *); -int nfsd_map_gid_to_name(struct svc_rqst *, __u32, char *); - -#endif /* LINUX_NFSD_IDMAP_H */ -- cgit v1.2.3 From 91aa5fadb831e7b6ea473a526a6b49c6dc4819ce Mon Sep 17 00:00:00 2001 From: Russell King - ARM Linux Date: Mon, 3 Jan 2011 22:31:04 +0000 Subject: ARM: PL08x: fix atomic_t usage and tx_submit() return value range The last_issued variable uses an atomic type, which is only incremented inside a protected region, and then read. Everywhere else only reads the value, so it isn't using atomic_t correctly, and it doesn't even need to. Moreover, the DMA engine code provides us with a variable for this already - chan.cookie. Use chan.cookie instead. Also, avoid negative dma_cookie_t values - negative returns from tx_submit() mean failure, yet in reality we always succeed. Restart from cookie 1, just like other DMA engine drivers do. Signed-off-by: Russell King Acked-by: Linus Walleij Signed-off-by: Dan Williams --- include/linux/amba/pl08x.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/amba/pl08x.h b/include/linux/amba/pl08x.h index 521a0f8974ac..4ae62b4684f9 100644 --- a/include/linux/amba/pl08x.h +++ b/include/linux/amba/pl08x.h @@ -174,7 +174,6 @@ struct pl08x_dma_chan { struct pl08x_channel_data *cd; dma_addr_t runtime_addr; enum dma_data_direction runtime_direction; - atomic_t last_issued; dma_cookie_t lc; struct list_head desc_list; struct pl08x_txd *at; -- cgit v1.2.3 From 7cb72ad959b16ac594118977b7954a7d2ec7a052 Mon Sep 17 00:00:00 2001 From: Russell King - ARM Linux Date: Mon, 3 Jan 2011 22:35:28 +0000 Subject: ARM: PL08x: avoid 'void *' struct fields when we can type them properly Avoid using 'void *' struct fields when the structs are not defined in linux/amba/pl08x.h - instead, forward declare the struct names, and use these instead. This ensures we have proper typechecking. Signed-off-by: Russell King Acked-by: Linus Walleij Signed-off-by: Dan Williams --- include/linux/amba/pl08x.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/amba/pl08x.h b/include/linux/amba/pl08x.h index 4ae62b4684f9..3ecc20fce26a 100644 --- a/include/linux/amba/pl08x.h +++ b/include/linux/amba/pl08x.h @@ -22,6 +22,9 @@ #include #include +struct pl08x_lli; +struct pl08x_driver_data; + /** * struct pl08x_channel_data - data structure to pass info between * platform and PL08x driver regarding channel configuration @@ -179,7 +182,7 @@ struct pl08x_dma_chan { struct pl08x_txd *at; unsigned long lockflags; spinlock_t lock; - void *host; + struct pl08x_driver_data *host; enum pl08x_dma_chan_state state; bool slave; struct pl08x_txd *waiting; -- cgit v1.2.3 From cace658572ba5d1075f3891e823130a66f3e330f Mon Sep 17 00:00:00 2001 From: Russell King - ARM Linux Date: Mon, 3 Jan 2011 22:37:31 +0000 Subject: ARM: PL08x: use 'size_t' for lengths Use size_t for variables denoting lengths throughout, and use the 'z' qualifier for printing the value. For safety, add a BUG_ON() in pl08x_fill_lli_for_desc() to catch the remainder potentially becoming negative. Signed-off-by: Russell King Acked-by: Linus Walleij Signed-off-by: Dan Williams --- include/linux/amba/pl08x.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/amba/pl08x.h b/include/linux/amba/pl08x.h index 3ecc20fce26a..2c834ed5f41f 100644 --- a/include/linux/amba/pl08x.h +++ b/include/linux/amba/pl08x.h @@ -77,7 +77,7 @@ struct pl08x_bus_data { dma_addr_t addr; u8 maxwidth; u8 buswidth; - u32 fill_bytes; + size_t fill_bytes; }; /** @@ -113,7 +113,7 @@ struct pl08x_txd { enum dma_data_direction direction; struct pl08x_bus_data srcbus; struct pl08x_bus_data dstbus; - int len; + size_t len; dma_addr_t llis_bus; void *llis_va; struct pl08x_channel_data *cd; -- cgit v1.2.3 From 19524d77ec34faf58d313ba34fb755ef6e159216 Mon Sep 17 00:00:00 2001 From: Russell King - ARM Linux Date: Mon, 3 Jan 2011 22:39:13 +0000 Subject: ARM: PL08x: avoid duplicating registers in txd and phychan structures As we now have all the code accessing the phychan {csrc,cdst,clli,cctl, ccfg} members in one function, there's no point storing the data into the struct. Get rid of the struct members. Re-order the register dump in the dev_dbg() to reflect the order we write the registers to the DMA device. The txd {csrc,cdst,clli,cctl} values are duplicates of the lli[0] values, so there's no point duplicating these either. Program the DMAC registers directly from the lli[0] values. Signed-off-by: Russell King Acked-by: Linus Walleij Signed-off-by: Dan Williams --- include/linux/amba/pl08x.h | 13 ------------- 1 file changed, 13 deletions(-) (limited to 'include/linux') diff --git a/include/linux/amba/pl08x.h b/include/linux/amba/pl08x.h index 2c834ed5f41f..29d974562df9 100644 --- a/include/linux/amba/pl08x.h +++ b/include/linux/amba/pl08x.h @@ -95,11 +95,6 @@ struct pl08x_phy_chan { spinlock_t lock; int signal; struct pl08x_dma_chan *serving; - u32 csrc; - u32 cdst; - u32 clli; - u32 cctl; - u32 ccfg; }; /** @@ -118,14 +113,6 @@ struct pl08x_txd { void *llis_va; struct pl08x_channel_data *cd; bool active; - /* - * Settings to be put into the physical channel when we - * trigger this txd - */ - u32 csrc; - u32 cdst; - u32 clli; - u32 cctl; }; /** -- cgit v1.2.3 From 4983a04fd2562986360b646b378f267308bc22c0 Mon Sep 17 00:00:00 2001 From: Russell King - ARM Linux Date: Mon, 3 Jan 2011 22:39:33 +0000 Subject: ARM: PL08x: move ccfg into txd structure The ccfg register is used to configure the channel parameters - the type and direction of transfer, the flow control signal and IRQ mask enables. The type and direction of transfer is known in the relevent prep_* function where a txd is created. The IRQ mask enables are always set, and the flow control signals are always set when we start processing a txd according to phychan->signal. If we store the ccfg value in the txd structure, we can avoid modifying platform data - and even having it in platform data at all. So, remove it from platform data too. Signed-off-by: Russell King Acked-by: Linus Walleij Signed-off-by: Dan Williams --- include/linux/amba/pl08x.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/amba/pl08x.h b/include/linux/amba/pl08x.h index 29d974562df9..8e74cb1845dd 100644 --- a/include/linux/amba/pl08x.h +++ b/include/linux/amba/pl08x.h @@ -58,7 +58,6 @@ struct pl08x_channel_data { int max_signal; u32 muxval; u32 cctl; - u32 ccfg; dma_addr_t addr; bool circular_buffer; bool single; @@ -113,6 +112,11 @@ struct pl08x_txd { void *llis_va; struct pl08x_channel_data *cd; bool active; + /* + * Settings to be put into the physical channel when we + * trigger this txd. Other registers are in llis_va[0]. + */ + u32 ccfg; }; /** -- cgit v1.2.3 From 70b5ed6b6d72cd8b1a3d4b7b878a0dd132bec7ba Mon Sep 17 00:00:00 2001 From: Russell King - ARM Linux Date: Mon, 3 Jan 2011 22:40:13 +0000 Subject: ARM: PL08x: move default cctl into txd structure Rather than modifying platform data while preparing a transfer, copy the cctl value into the txd structure and modify the value there. Signed-off-by: Russell King Acked-by: Linus Walleij Signed-off-by: Dan Williams --- include/linux/amba/pl08x.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/amba/pl08x.h b/include/linux/amba/pl08x.h index 8e74cb1845dd..8d9083067d3d 100644 --- a/include/linux/amba/pl08x.h +++ b/include/linux/amba/pl08x.h @@ -110,8 +110,9 @@ struct pl08x_txd { size_t len; dma_addr_t llis_bus; void *llis_va; - struct pl08x_channel_data *cd; bool active; + /* Default cctl value for LLIs */ + u32 cctl; /* * Settings to be put into the physical channel when we * trigger this txd. Other registers are in llis_va[0]. -- cgit v1.2.3 From 30749cb4a40f02a199640011e5ab5c5f60b8482e Mon Sep 17 00:00:00 2001 From: Russell King - ARM Linux Date: Mon, 3 Jan 2011 22:41:13 +0000 Subject: ARM: PL08x: allow AHB master port selection to be configured Platforms need to be able to control which AHB master interface is used, as each AHB master interface may be asymetric. Allow the interfaces used for fetching LLIs, memory, and each peripheral to be configured individually. Signed-off-by: Russell King Acked-by: Linus Walleij Signed-off-by: Dan Williams --- include/linux/amba/pl08x.h | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/amba/pl08x.h b/include/linux/amba/pl08x.h index 8d9083067d3d..f858651027fd 100644 --- a/include/linux/amba/pl08x.h +++ b/include/linux/amba/pl08x.h @@ -25,6 +25,12 @@ struct pl08x_lli; struct pl08x_driver_data; +/* Bitmasks for selecting AHB ports for DMA transfers */ +enum { + PL08X_AHB1 = (1 << 0), + PL08X_AHB2 = (1 << 1) +}; + /** * struct pl08x_channel_data - data structure to pass info between * platform and PL08x driver regarding channel configuration @@ -51,6 +57,8 @@ struct pl08x_driver_data; * round round round) * @single: the device connected to this channel will request single * DMA transfers, not bursts. (Bursts are default.) + * @periph_buses: the device connected to this channel is accessible via + * these buses (use PL08X_AHB1 | PL08X_AHB2). */ struct pl08x_channel_data { char *bus_id; @@ -61,6 +69,7 @@ struct pl08x_channel_data { dma_addr_t addr; bool circular_buffer; bool single; + u8 periph_buses; }; /** @@ -193,8 +202,8 @@ struct pl08x_dma_chan { * less than zero, else it returns the allocated signal number * @put_signal: indicate to the platform that this physical signal is not * running any DMA transfer and multiplexing can be recycled - * @bus_bit_lli: Bit[0] of the address indicated which AHB bus master the - * LLI addresses are on 0/1 Master 1/2. + * @lli_buses: buses which LLIs can be fetched from: PL08X_AHB1 | PL08X_AHB2 + * @mem_buses: buses which memory can be accessed from: PL08X_AHB1 | PL08X_AHB2 */ struct pl08x_platform_data { struct pl08x_channel_data *slave_channels; @@ -202,6 +211,8 @@ struct pl08x_platform_data { struct pl08x_channel_data memcpy_channel; int (*get_signal)(struct pl08x_dma_chan *); void (*put_signal)(struct pl08x_dma_chan *); + u8 lli_buses; + u8 mem_buses; }; #ifdef CONFIG_AMBA_PL08X -- cgit v1.2.3 From d7244e9a27a3da27d62aabf560ee828d7991493e Mon Sep 17 00:00:00 2001 From: Russell King - ARM Linux Date: Mon, 3 Jan 2011 22:43:35 +0000 Subject: ARM: PL08x: shrink srcbus/dstbus in txd structure We only need to store the dma address. Signed-off-by: Russell King Acked-by: Linus Walleij Signed-off-by: Dan Williams --- include/linux/amba/pl08x.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/amba/pl08x.h b/include/linux/amba/pl08x.h index f858651027fd..4e9e71860e1c 100644 --- a/include/linux/amba/pl08x.h +++ b/include/linux/amba/pl08x.h @@ -114,8 +114,8 @@ struct pl08x_txd { struct dma_async_tx_descriptor tx; struct list_head node; enum dma_data_direction direction; - struct pl08x_bus_data srcbus; - struct pl08x_bus_data dstbus; + dma_addr_t src_addr; + dma_addr_t dst_addr; size_t len; dma_addr_t llis_bus; void *llis_va; -- cgit v1.2.3 From 15c17232fbd1f7687c740c3c26f9e7f337bd9e36 Mon Sep 17 00:00:00 2001 From: Russell King - ARM Linux Date: Mon, 3 Jan 2011 22:44:36 +0000 Subject: ARM: PL08x: rename 'desc_list' as 'pend_list' This 'desc_list' is actually a list of pending descriptors, so name it after its function (pending list) rather than what it contains (descriptors). Signed-off-by: Russell King Acked-by: Linus Walleij Signed-off-by: Dan Williams --- include/linux/amba/pl08x.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/amba/pl08x.h b/include/linux/amba/pl08x.h index 4e9e71860e1c..08a9024e2d2f 100644 --- a/include/linux/amba/pl08x.h +++ b/include/linux/amba/pl08x.h @@ -158,7 +158,7 @@ enum pl08x_dma_chan_state { * @runtime_direction: current direction of this channel according to * runtime config * @lc: last completed transaction on this channel - * @desc_list: queued transactions pending on this channel + * @pend_list: queued transactions pending on this channel * @at: active transaction on this channel * @lockflags: sometimes we let a lock last between two function calls, * especially prep/submit, and then we need to store the IRQ flags @@ -179,7 +179,7 @@ struct pl08x_dma_chan { dma_addr_t runtime_addr; enum dma_data_direction runtime_direction; dma_cookie_t lc; - struct list_head desc_list; + struct list_head pend_list; struct pl08x_txd *at; unsigned long lockflags; spinlock_t lock; -- cgit v1.2.3 From 8087aacda040bdbf84940712d132ce80c30b9d5d Mon Sep 17 00:00:00 2001 From: Russell King - ARM Linux Date: Mon, 3 Jan 2011 22:45:17 +0000 Subject: ARM: PL08x: introduce 'phychan_hold' to hold on to physical channels Introduce 'phychan_hold' to hold on to physical DMA channels while we're preparing a new descriptor for it. This will be incremented when we allocate a physical channel and set the MUX registers during the preparation of the TXD, and will only be decremented when the TXD is submitted. This prevents the physical channel being given up before the new TXD is placed on the queue. Signed-off-by: Russell King Acked-by: Linus Walleij Signed-off-by: Dan Williams --- include/linux/amba/pl08x.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/amba/pl08x.h b/include/linux/amba/pl08x.h index 08a9024e2d2f..95b76ea1829f 100644 --- a/include/linux/amba/pl08x.h +++ b/include/linux/amba/pl08x.h @@ -151,6 +151,8 @@ enum pl08x_dma_chan_state { * struct pl08x_dma_chan - this structure wraps a DMA ENGINE channel * @chan: wrappped abstract channel * @phychan: the physical channel utilized by this channel, if there is one + * @phychan_hold: if non-zero, hold on to the physical channel even if we + * have no pending entries * @tasklet: tasklet scheduled by the IRQ to handle actual work etc * @name: name of channel * @cd: channel platform data @@ -173,6 +175,7 @@ enum pl08x_dma_chan_state { struct pl08x_dma_chan { struct dma_chan chan; struct pl08x_phy_chan *phychan; + int phychan_hold; struct tasklet_struct tasklet; char *name; struct pl08x_channel_data *cd; -- cgit v1.2.3 From c370e594efe2993620d24d41a78f325102e99d1c Mon Sep 17 00:00:00 2001 From: Russell King - ARM Linux Date: Mon, 3 Jan 2011 22:45:37 +0000 Subject: ARM: PL08x: fix locking between prepare function and submit function The PL08x driver holds on to the channel lock with interrupts disabled between the prepare and the subsequent submit API functions. This means that the locking state when the prepare function returns is dependent on whether it suceeeds or not. It did this to ensure that the physical channel wasn't released, and as it used to add the descriptor onto the pending list at prepare time rather than submit time. Now that we have reorganized the code to remove those reasons, we can now safely release the spinlock at the end of preparation and reacquire it in our submit function. Signed-off-by: Russell King Acked-by: Linus Walleij Signed-off-by: Dan Williams --- include/linux/amba/pl08x.h | 4 ---- 1 file changed, 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/amba/pl08x.h b/include/linux/amba/pl08x.h index 95b76ea1829f..933b4ed12be5 100644 --- a/include/linux/amba/pl08x.h +++ b/include/linux/amba/pl08x.h @@ -162,9 +162,6 @@ enum pl08x_dma_chan_state { * @lc: last completed transaction on this channel * @pend_list: queued transactions pending on this channel * @at: active transaction on this channel - * @lockflags: sometimes we let a lock last between two function calls, - * especially prep/submit, and then we need to store the IRQ flags - * in the channel state, here * @lock: a lock for this channel data * @host: a pointer to the host (internal use) * @state: whether the channel is idle, paused, running etc @@ -184,7 +181,6 @@ struct pl08x_dma_chan { dma_cookie_t lc; struct list_head pend_list; struct pl08x_txd *at; - unsigned long lockflags; spinlock_t lock; struct pl08x_driver_data *host; enum pl08x_dma_chan_state state; -- cgit v1.2.3 From 8d608aa6295242fe4c4b6105b8c59c6a5b232d89 Mon Sep 17 00:00:00 2001 From: Dave Airlie Date: Tue, 7 Dec 2010 08:57:57 +1000 Subject: vga_switcheroo: add reprobe hook for fbcon to recheck connected outputs. This adds a hook after the mux is switched for the driver to reprobe the connected outputs. Signed-off-by: Dave Airlie --- include/linux/vga_switcheroo.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/vga_switcheroo.h b/include/linux/vga_switcheroo.h index ae9ab13b963d..f80fa9de5b82 100644 --- a/include/linux/vga_switcheroo.h +++ b/include/linux/vga_switcheroo.h @@ -33,6 +33,7 @@ struct vga_switcheroo_handler { void vga_switcheroo_unregister_client(struct pci_dev *dev); int vga_switcheroo_register_client(struct pci_dev *dev, void (*set_gpu_state)(struct pci_dev *dev, enum vga_switcheroo_state), + void (*reprobe)(struct pci_dev *dev), bool (*can_switch)(struct pci_dev *dev)); void vga_switcheroo_client_fb_set(struct pci_dev *dev, -- cgit v1.2.3 From 6bf4123760a5aece6e4829ce90b70b6ffd751d65 Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Wed, 5 Jan 2011 12:50:16 +1100 Subject: sched: Change wait_for_completion_*_timeout() to return a signed long wait_for_completion_*_timeout() can return: 0: if the wait timed out -ve: if the wait was interrupted +ve: if the completion was completed. As they currently return an 'unsigned long', the last two cases are not easily distinguished which can easily result in buggy code, as is the case for the recently added wait_for_completion_interruptible_timeout() call in net/sunrpc/cache.c So change them both to return 'long'. As MAX_SCHEDULE_TIMEOUT is LONG_MAX, a large +ve return value should never overflow. Signed-off-by: NeilBrown Cc: Peter Zijlstra Cc: J. Bruce Fields Cc: Andrew Morton Cc: Linus Torvalds LKML-Reference: <20110105125016.64ccab0e@notabene.brown> Signed-off-by: Ingo Molnar --- include/linux/completion.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/completion.h b/include/linux/completion.h index 36d57f74cd01..51494e6b5548 100644 --- a/include/linux/completion.h +++ b/include/linux/completion.h @@ -81,10 +81,10 @@ extern int wait_for_completion_interruptible(struct completion *x); extern int wait_for_completion_killable(struct completion *x); extern unsigned long wait_for_completion_timeout(struct completion *x, unsigned long timeout); -extern unsigned long wait_for_completion_interruptible_timeout( - struct completion *x, unsigned long timeout); -extern unsigned long wait_for_completion_killable_timeout( - struct completion *x, unsigned long timeout); +extern long wait_for_completion_interruptible_timeout( + struct completion *x, unsigned long timeout); +extern long wait_for_completion_killable_timeout( + struct completion *x, unsigned long timeout); extern bool try_wait_for_completion(struct completion *x); extern bool completion_done(struct completion *x); -- cgit v1.2.3 From e4a683c899cd5a49f8d684a054c95bd115a0c005 Mon Sep 17 00:00:00 2001 From: Jerome Marchand Date: Wed, 5 Jan 2011 16:57:37 +0100 Subject: kref: add kref_test_and_get Add kref_test_and_get() function, which atomically add a reference only if refcount is not zero. This prevent to add a reference to an object that is already being removed. Signed-off-by: Jerome Marchand Cc: stable@kernel.org Signed-off-by: Jens Axboe --- include/linux/kref.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/kref.h b/include/linux/kref.h index 6cc38fc07ab7..90b9e44abf54 100644 --- a/include/linux/kref.h +++ b/include/linux/kref.h @@ -23,6 +23,7 @@ struct kref { void kref_init(struct kref *kref); void kref_get(struct kref *kref); +int kref_test_and_get(struct kref *kref); int kref_put(struct kref *kref, void (*release) (struct kref *kref)); #endif /* _KREF_H_ */ -- cgit v1.2.3 From 09e099d4bafea3b15be003d548bdf94b4b6e0e17 Mon Sep 17 00:00:00 2001 From: Jerome Marchand Date: Wed, 5 Jan 2011 16:57:38 +0100 Subject: block: fix accounting bug on cross partition merges /proc/diskstats would display a strange output as follows. $ cat /proc/diskstats |grep sda 8 0 sda 90524 7579 102154 20464 0 0 0 0 0 14096 20089 8 1 sda1 19085 1352 21841 4209 0 0 0 0 4294967064 15689 4293424691 ~~~~~~~~~~ 8 2 sda2 71252 3624 74891 15950 0 0 0 0 232 23995 1562390 8 3 sda3 54 487 2188 92 0 0 0 0 0 88 92 8 4 sda4 4 0 8 0 0 0 0 0 0 0 0 8 5 sda5 81 2027 2130 138 0 0 0 0 0 87 137 Its reason is the wrong way of accounting hd_struct->in_flight. When a bio is merged into a request belongs to different partition by ELEVATOR_FRONT_MERGE. The detailed root cause is as follows. Assuming that there are two partition, sda1 and sda2. 1. A request for sda2 is in request_queue. Hence sda1's hd_struct->in_flight is 0 and sda2's one is 1. | hd_struct->in_flight --------------------------- sda1 | 0 sda2 | 1 --------------------------- 2. A bio belongs to sda1 is issued and is merged into the request mentioned on step1 by ELEVATOR_BACK_MERGE. The first sector of the request is changed from sda2 region to sda1 region. However the two partition's hd_struct->in_flight are not changed. | hd_struct->in_flight --------------------------- sda1 | 0 sda2 | 1 --------------------------- 3. The request is finished and blk_account_io_done() is called. In this case, sda2's hd_struct->in_flight, not a sda1's one, is decremented. | hd_struct->in_flight --------------------------- sda1 | -1 sda2 | 1 --------------------------- The patch fixes the problem by caching the partition lookup inside the request structure, hence making sure that the increment and decrement will always happen on the same partition struct. This also speeds up IO with accounting enabled, since it cuts down on the number of lookups we have to do. Also add a refcount to struct hd_struct to keep the partition in memory as long as users exist. We use kref_test_and_get() to ensure we don't add a reference to a partition which is going away. Signed-off-by: Jerome Marchand Signed-off-by: Yasuaki Ishimatsu Cc: stable@kernel.org Signed-off-by: Jens Axboe --- include/linux/blkdev.h | 1 + include/linux/genhd.h | 2 ++ 2 files changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index aae86fd10c4f..482a7fd48831 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -115,6 +115,7 @@ struct request { void *elevator_private3; struct gendisk *rq_disk; + struct hd_struct *part; unsigned long start_time; #ifdef CONFIG_BLK_CGROUP unsigned long long start_time_ns; diff --git a/include/linux/genhd.h b/include/linux/genhd.h index 7a7b9c1644e4..2ba2792a3dd4 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -116,6 +116,7 @@ struct hd_struct { struct disk_stats dkstats; #endif struct rcu_head rcu_head; + struct kref ref; }; #define GENHD_FL_REMOVABLE 1 @@ -583,6 +584,7 @@ extern struct hd_struct * __must_check add_partition(struct gendisk *disk, sector_t len, int flags, struct partition_meta_info *info); +extern void __delete_partition(struct kref *ref); extern void delete_partition(struct gendisk *, int); extern void printk_all_partitions(void); -- cgit v1.2.3 From 68b65f7305e54b822b2483c60de7d7b017526a92 Mon Sep 17 00:00:00 2001 From: Russell King Date: Wed, 22 Dec 2010 17:24:39 +0000 Subject: ARM: PL011: Add support for transmit DMA Add DMA engine support for transmit to the PL011 driver. Based on a patch from Linus Walliej, with the following changes: - remove RX DMA support. As PL011 doesn't give us receive timeout interrupts, we only get notified of received data when the RX DMA has completed. This rather sucks for interactive use of the TTY. - remove abuse of completions. Completions are supposed to be for events, not to tell what condition buffers are in. Replace it with a simple 'queued' bool. - fix locking - it is only safe to access the circular buffer with the port lock held. - only map the DMA buffer when required - if we're ever behind an IOMMU this helps keep IOMMU usage down, and also ensures that we're legal when we change the scatterlist entry length. - fix XON/XOFF sending - we must send XON/XOFF characters out as soon as possible - waiting for up to 4095 characters in the DMA buffer to be sent first is not acceptable. - fix XON/XOFF receive handling - we need to stop DMA when instructed to by the TTY layer, and restart it again when instructed to. There is a subtle problem here: we must not completely empty the circular buffer with DMA, otherwise we will not be notified of XON. - change the 'enable_dma' flag into a 'using DMA' flag, and track whether we can use TX DMA by whether the channel pointer is non-NULL. This gives us more control over whether we use DMA in the driver. - we don't need to have the TX DMA buffer continually allocated for each port - instead, allocate it when the port starts up, and free it when it's shut down. Update the 'using DMA' flag if we get the buffer, and adjust the TTY FIFO size appropriately. - if we're going to use PIO to send characters, use the existing IRQ based functionality rather than reimplementing it. This also ensures we call uart_write_wakeup() at the appropriate time, otherwise we'll stall. - use DMA engine helper functions for type safety. - fix init when built as a module - we can't have to initcall functions, so we must settle on one. This means we can eliminate the deferred DMA initialization. - there is no need to terminate transfers on a failed prep_slave_sg() call - nothing has been setup, so nothing needs to be terminated. This avoids a potential deadlock in the DMA engine code (tasklet->callback->failed prepare->terminate->tasklet_disable which then ends up waiting for the tasklet to finish running.) - Dan says that the submission callback should not return an error: | dma_submit_error() is something I should have removed after commit | a0587bcf "ioat1: move descriptor allocation from submit to prep" all | errors should be notified by prep failing to return a descriptor | handle. Negative dma_cookie_t values are only returned by the | dma_async_memcpy* calls which translate a prep failure into -ENOMEM. So remove the error handling at that point. This also solves the potential deadlock mentioned in the previous comment. Acked-by: Linus Walleij Signed-off-by: Russell King --- include/linux/amba/serial.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/amba/serial.h b/include/linux/amba/serial.h index 6021588ba0a8..577f22eb9225 100644 --- a/include/linux/amba/serial.h +++ b/include/linux/amba/serial.h @@ -180,6 +180,13 @@ struct amba_device; /* in uncompress this is included but amba/bus.h is not */ struct amba_pl010_data { void (*set_mctrl)(struct amba_device *dev, void __iomem *base, unsigned int mctrl); }; + +struct dma_chan; +struct amba_pl011_data { + bool (*dma_filter)(struct dma_chan *chan, void *filter_param); + void *dma_rx_param; + void *dma_tx_param; +}; #endif #endif -- cgit v1.2.3 From 38d624361b2a82d6317c379aebf81b1b28210bb0 Mon Sep 17 00:00:00 2001 From: Russell King Date: Wed, 22 Dec 2010 17:59:16 +0000 Subject: ARM: PL011: add DMA burst threshold support for ST variants ST Micro variants has some specific dma burst threshold compensation, which allows them to make better use of a DMA controller. Add support to set this up. Based on a patch from Linus Walleij. Acked-by: Linus Walleij Signed-off-by: Russell King --- include/linux/amba/serial.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'include/linux') diff --git a/include/linux/amba/serial.h b/include/linux/amba/serial.h index 577f22eb9225..5479fdc849e9 100644 --- a/include/linux/amba/serial.h +++ b/include/linux/amba/serial.h @@ -113,6 +113,21 @@ #define UART01x_LCRH_PEN 0x02 #define UART01x_LCRH_BRK 0x01 +#define ST_UART011_DMAWM_RX_1 (0 << 3) +#define ST_UART011_DMAWM_RX_2 (1 << 3) +#define ST_UART011_DMAWM_RX_4 (2 << 3) +#define ST_UART011_DMAWM_RX_8 (3 << 3) +#define ST_UART011_DMAWM_RX_16 (4 << 3) +#define ST_UART011_DMAWM_RX_32 (5 << 3) +#define ST_UART011_DMAWM_RX_48 (6 << 3) +#define ST_UART011_DMAWM_TX_1 0 +#define ST_UART011_DMAWM_TX_2 1 +#define ST_UART011_DMAWM_TX_4 2 +#define ST_UART011_DMAWM_TX_8 3 +#define ST_UART011_DMAWM_TX_16 4 +#define ST_UART011_DMAWM_TX_32 5 +#define ST_UART011_DMAWM_TX_48 6 + #define UART010_IIR_RTIS 0x08 #define UART010_IIR_TIS 0x04 #define UART010_IIR_RIS 0x02 -- cgit v1.2.3 From 3610cda53f247e176bcbb7a7cca64bc53b12acdb Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Wed, 5 Jan 2011 15:38:53 -0800 Subject: af_unix: Avoid socket->sk NULL OOPS in stream connect security hooks. unix_release() can asynchornously set socket->sk to NULL, and it does so without holding the unix_state_lock() on "other" during stream connects. However, the reverse mapping, sk->sk_socket, is only transitioned to NULL under the unix_state_lock(). Therefore make the security hooks follow the reverse mapping instead of the forward mapping. Reported-by: Jeremy Fitzhardinge Reported-by: Linus Torvalds Signed-off-by: David S. Miller --- include/linux/security.h | 15 +++++++-------- 1 file changed, 7 insertions(+), 8 deletions(-) (limited to 'include/linux') diff --git a/include/linux/security.h b/include/linux/security.h index fd4d55fb8845..d47a4c24b3e4 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -796,8 +796,9 @@ static inline void security_free_mnt_opts(struct security_mnt_opts *opts) * @unix_stream_connect: * Check permissions before establishing a Unix domain stream connection * between @sock and @other. - * @sock contains the socket structure. - * @other contains the peer socket structure. + * @sock contains the sock structure. + * @other contains the peer sock structure. + * @newsk contains the new sock structure. * Return 0 if permission is granted. * @unix_may_send: * Check permissions before connecting or sending datagrams from @sock to @@ -1568,8 +1569,7 @@ struct security_operations { int (*inode_getsecctx)(struct inode *inode, void **ctx, u32 *ctxlen); #ifdef CONFIG_SECURITY_NETWORK - int (*unix_stream_connect) (struct socket *sock, - struct socket *other, struct sock *newsk); + int (*unix_stream_connect) (struct sock *sock, struct sock *other, struct sock *newsk); int (*unix_may_send) (struct socket *sock, struct socket *other); int (*socket_create) (int family, int type, int protocol, int kern); @@ -2525,8 +2525,7 @@ static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 #ifdef CONFIG_SECURITY_NETWORK -int security_unix_stream_connect(struct socket *sock, struct socket *other, - struct sock *newsk); +int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk); int security_unix_may_send(struct socket *sock, struct socket *other); int security_socket_create(int family, int type, int protocol, int kern); int security_socket_post_create(struct socket *sock, int family, @@ -2567,8 +2566,8 @@ void security_tun_dev_post_create(struct sock *sk); int security_tun_dev_attach(struct sock *sk); #else /* CONFIG_SECURITY_NETWORK */ -static inline int security_unix_stream_connect(struct socket *sock, - struct socket *other, +static inline int security_unix_stream_connect(struct sock *sock, + struct sock *other, struct sock *newsk) { return 0; -- cgit v1.2.3 From b27dcfb0670ea7352a67137f4ff7947c2a9f6892 Mon Sep 17 00:00:00 2001 From: Jeff Garzik Date: Wed, 17 Nov 2010 22:56:48 -0500 Subject: [libata] avoid needlessly passing around ptr to SCSI completion func It's stored in struct scsi_cmnd->scsi_done, making several 'done' parameters to functions redundant. Signed-off-by: Jeff Garzik --- include/linux/libata.h | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/libata.h b/include/linux/libata.h index d947b1231662..c9c5d7ad1a2b 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -996,8 +996,7 @@ extern int ata_sas_port_init(struct ata_port *); extern int ata_sas_port_start(struct ata_port *ap); extern void ata_sas_port_stop(struct ata_port *ap); extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *); -extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *), - struct ata_port *ap); +extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap); extern int sata_scr_valid(struct ata_link *link); extern int sata_scr_read(struct ata_link *link, int reg, u32 *val); extern int sata_scr_write(struct ata_link *link, int reg, u32 val); @@ -1040,8 +1039,7 @@ extern unsigned int ata_do_dev_read_id(struct ata_device *dev, struct ata_taskfile *tf, u16 *id); extern void ata_qc_complete(struct ata_queued_cmd *qc); extern int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active); -extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd, - void (*done)(struct scsi_cmnd *)); +extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd); extern int ata_std_bios_param(struct scsi_device *sdev, struct block_device *bdev, sector_t capacity, int geom[]); -- cgit v1.2.3 From af5dd83b873efd4e1477f2265b6fa15a825aff26 Mon Sep 17 00:00:00 2001 From: Dave Airlie Date: Thu, 6 Jan 2011 13:04:32 +1000 Subject: vga_switcheroo: fix build with non switcheroo enabled path. Signed-off-by: Dave Airlie --- include/linux/vga_switcheroo.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/vga_switcheroo.h b/include/linux/vga_switcheroo.h index f80fa9de5b82..4b9a7f596f92 100644 --- a/include/linux/vga_switcheroo.h +++ b/include/linux/vga_switcheroo.h @@ -49,6 +49,7 @@ int vga_switcheroo_process_delayed_switch(void); static inline void vga_switcheroo_unregister_client(struct pci_dev *dev) {} static inline int vga_switcheroo_register_client(struct pci_dev *dev, void (*set_gpu_state)(struct pci_dev *dev, enum vga_switcheroo_state), + void (*reprobe)(struct pci_dev *dev), bool (*can_switch)(struct pci_dev *dev)) { return 0; } static inline void vga_switcheroo_client_fb_set(struct pci_dev *dev, struct fb_info *info) {} static inline int vga_switcheroo_register_handler(struct vga_switcheroo_handler *handler) { return 0; } -- cgit v1.2.3 From cf24dc85ff29a41abd8e73730e5feb22b2666bd3 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Fri, 19 Feb 2010 15:39:52 +0100 Subject: mtd: OneNAND: add enable / disable methods to onenand_chip Add enable / disable methods called from get_device() / release_device(). These can be used, for example, to allow the driver to prevent the voltage regulator from being put to sleep while OneNAND is in use. Signed-off-by: Adrian Hunter Signed-off-by: David Woodhouse --- include/linux/mtd/onenand.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mtd/onenand.h b/include/linux/mtd/onenand.h index 6da3fe314828..ae418e41d8f5 100644 --- a/include/linux/mtd/onenand.h +++ b/include/linux/mtd/onenand.h @@ -118,6 +118,8 @@ struct onenand_chip { int (*chip_probe)(struct mtd_info *mtd); int (*block_markbad)(struct mtd_info *mtd, loff_t ofs); int (*scan_bbt)(struct mtd_info *mtd); + int (*enable)(struct mtd_info *mtd); + int (*disable)(struct mtd_info *mtd); struct completion complete; int irq; -- cgit v1.2.3 From 0e4ca7e5101e7f4054452b8d71c535eec64a187b Mon Sep 17 00:00:00 2001 From: Anatolij Gustschin Date: Thu, 16 Dec 2010 23:42:14 +0100 Subject: mtd: add writebufsize field to mtd_info struct This field will be used to indicate the write buffer size of the MTD device. UBI will set it's minimal I/O unit size (min_io_size) to the indicated write buffer size. By this change we intend to fix failed recovery of UBIFS partitions we currently observe on NOR flash when mounting the partition after unclean unmount. Currently the min_io_size is set to mtd->writesize (which is 1 byte for NOR flash). But flash programming is often done from prepared write buffer containing multiple bytes and is performed in one programming operation which could be interrupted by a power cut or a system reset causing corrupted (partially written) areas in a flash sector. Knowing the size of potentially corrupted areas UBIFS scanning and recovery algorithms are able to perform successful recovery. In case of NOR flash minimal I/O size must be equal to the maximal size of the write buffer used by embedded flash programming algorithm. In case of NAND flash mtd->writebufsize should be equivalent to mtd->writesize. The subsequent patches will add mtd->writebufsize initialization where needed. Signed-off-by: Anatolij Gustschin Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- include/linux/mtd/mtd.h | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index fe8d77ebec13..9d5306bad117 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -144,6 +144,17 @@ struct mtd_info { */ uint32_t writesize; + /* + * Size of the write buffer used by the MTD. MTD devices having a write + * buffer can write multiple writesize chunks at a time. E.g. while + * writing 4 * writesize bytes to a device with 2 * writesize bytes + * buffer the MTD driver can (but doesn't have to) do 2 writesize + * operations, but not 4. Currently, all NANDs have writebufsize + * equivalent to writesize (NAND page size). Some NOR flashes do have + * writebufsize greater than writesize. + */ + uint32_t writebufsize; + uint32_t oobsize; // Amount of OOB data per block (e.g. 16) uint32_t oobavail; // Available OOB bytes per block -- cgit v1.2.3 From 238c855805c853eaec95b0bc3065effb64f955a0 Mon Sep 17 00:00:00 2001 From: Henry Ptasinski Date: Tue, 4 Jan 2011 16:07:14 +0000 Subject: include/linux/if_ether.h: Add #define ETH_P_LINK_CTL for HPNA and wlan local tunnel Ethertype used by HPNA control protocols (LARQ, rate, link, etc) and by Broadcom wlan drivers for local signalling. Signed-off-by: Henry Ptasinski Signed-off-by: David S. Miller --- include/linux/if_ether.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/if_ether.h b/include/linux/if_ether.h index f9c3df03db0f..be69043d2896 100644 --- a/include/linux/if_ether.h +++ b/include/linux/if_ether.h @@ -72,6 +72,7 @@ #define ETH_P_MPLS_UC 0x8847 /* MPLS Unicast traffic */ #define ETH_P_MPLS_MC 0x8848 /* MPLS Multicast traffic */ #define ETH_P_ATMMPOA 0x884c /* MultiProtocol Over ATM */ +#define ETH_P_LINK_CTL 0x886c /* HPNA, wlan link local tunnel */ #define ETH_P_ATMFATE 0x8884 /* Frame-based ATM Transport * over Ethernet */ -- cgit v1.2.3 From 2ad0d9d413abc3380fc1d89a9da7f8db59d9746b Mon Sep 17 00:00:00 2001 From: Changli Gao Date: Thu, 6 Jan 2011 11:41:42 -0800 Subject: net: remove the duplicate #ifdef __KERNEL__ Since we are already in #ifdef __KERNEL__, we don't need to check it again. Signed-off-by: Changli Gao Signed-off-by: David S. Miller --- include/linux/socket.h | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/socket.h b/include/linux/socket.h index 86b652fabf6e..5f65f14c4f44 100644 --- a/include/linux/socket.h +++ b/include/linux/socket.h @@ -30,12 +30,10 @@ struct cred; #define __sockaddr_check_size(size) \ BUILD_BUG_ON(((size) > sizeof(struct __kernel_sockaddr_storage))) -#ifdef __KERNEL__ -# ifdef CONFIG_PROC_FS +#ifdef CONFIG_PROC_FS struct seq_file; extern void socket_seq_show(struct seq_file *seq); -# endif -#endif /* __KERNEL__ */ +#endif typedef unsigned short sa_family_t; @@ -311,7 +309,6 @@ struct ucred { /* IPX options */ #define IPX_TYPE 1 -#ifdef __KERNEL__ extern void cred_to_ucred(struct pid *pid, const struct cred *cred, struct ucred *ucred); extern int memcpy_fromiovec(unsigned char *kdata, struct iovec *iov, int len); @@ -333,6 +330,5 @@ struct timespec; extern int __sys_recvmmsg(int fd, struct mmsghdr __user *mmsg, unsigned int vlen, unsigned int flags, struct timespec *timeout); -#endif #endif /* not kernel and not glibc */ #endif /* _LINUX_SOCKET_H */ -- cgit v1.2.3 From 1f11a034cdc4b45ee56d51b87a9e37cb776fb15b Mon Sep 17 00:00:00 2001 From: Andy Adamson Date: Thu, 6 Jan 2011 02:04:26 +0000 Subject: SUNRPC new transport for the NFSv4.1 shared back channel Move the current sock create and destroy routines into the new transport ops. Back channel socket will be destroyed by the svc_closs_all call in svc_destroy. Added check: only TCP supported on shared back channel. Signed-off-by: Andy Adamson Acked-by: Bruce Fields Signed-off-by: Trond Myklebust --- include/linux/sunrpc/svcsock.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/sunrpc/svcsock.h b/include/linux/sunrpc/svcsock.h index 1b353a76c304..3a45a80760b9 100644 --- a/include/linux/sunrpc/svcsock.h +++ b/include/linux/sunrpc/svcsock.h @@ -45,6 +45,7 @@ int svc_sock_names(struct svc_serv *serv, char *buf, int svc_addsock(struct svc_serv *serv, const int fd, char *name_return, const size_t len); void svc_init_xprt_sock(void); +void svc_init_bc_xprt_sock(void); void svc_cleanup_xprt_sock(void); struct svc_xprt *svc_sock_create(struct svc_serv *serv, int prot); void svc_sock_destroy(struct svc_xprt *); -- cgit v1.2.3 From 16b2d1e1d12de000404d7c845d0db1226511f84d Mon Sep 17 00:00:00 2001 From: Andy Adamson Date: Thu, 6 Jan 2011 02:04:27 +0000 Subject: SUNRPC register and unregister the back channel transport Signed-off-by: Andy Adamson Signed-off-by: Trond Myklebust --- include/linux/sunrpc/svcsock.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/sunrpc/svcsock.h b/include/linux/sunrpc/svcsock.h index 3a45a80760b9..1b353a76c304 100644 --- a/include/linux/sunrpc/svcsock.h +++ b/include/linux/sunrpc/svcsock.h @@ -45,7 +45,6 @@ int svc_sock_names(struct svc_serv *serv, char *buf, int svc_addsock(struct svc_serv *serv, const int fd, char *name_return, const size_t len); void svc_init_xprt_sock(void); -void svc_init_bc_xprt_sock(void); void svc_cleanup_xprt_sock(void); struct svc_xprt *svc_sock_create(struct svc_serv *serv, int prot); void svc_sock_destroy(struct svc_xprt *); -- cgit v1.2.3 From f4eecd5da3422e82e88e36c33cbd2595eebcacb1 Mon Sep 17 00:00:00 2001 From: Andy Adamson Date: Thu, 6 Jan 2011 02:04:30 +0000 Subject: NFS implement v4.0 callback_ident Use the small id to pointer translator service to provide a unique callback identifier per SETCLIENTID call used to identify the v4.0 callback service associated with the clientid. Signed-off-by: Andy Adamson Signed-off-by: Trond Myklebust --- include/linux/nfs_fs_sb.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h index 452d96436d26..1eaa054a2c7d 100644 --- a/include/linux/nfs_fs_sb.h +++ b/include/linux/nfs_fs_sb.h @@ -71,6 +71,7 @@ struct nfs_client { */ char cl_ipaddr[48]; unsigned char cl_id_uniquifier; + u32 cl_cb_ident; /* v4.0 callback identifier */ const struct nfs4_minor_version_ops *cl_mvops; #endif /* CONFIG_NFS_V4 */ -- cgit v1.2.3 From 2c2618c6f29c41a0a966f14f05c8bf45fcabb750 Mon Sep 17 00:00:00 2001 From: Andy Adamson Date: Thu, 6 Jan 2011 02:04:31 +0000 Subject: NFS associate sessionid with callback connection The sessions based callback service is started prior to the CREATE_SESSION call so that it can handle CB_NULL requests which can be sent before the CREATE_SESSION call returns and the session ID is known. Set the callback sessionid after a sucessful CREATE_SESSION. Signed-off-by: Andy Adamson Signed-off-by: Trond Myklebust --- include/linux/sunrpc/svc_xprt.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/sunrpc/svc_xprt.h b/include/linux/sunrpc/svc_xprt.h index aea0d438e3c7..357da5e0daa3 100644 --- a/include/linux/sunrpc/svc_xprt.h +++ b/include/linux/sunrpc/svc_xprt.h @@ -78,6 +78,7 @@ struct svc_xprt { size_t xpt_remotelen; /* length of address */ struct rpc_wait_queue xpt_bc_pending; /* backchannel wait queue */ struct list_head xpt_users; /* callbacks on free */ + void *xpt_bc_sid; /* back channel session ID */ struct net *xpt_net; }; -- cgit v1.2.3 From c36fca52f5e4594ffd0ff175b328966b0d393184 Mon Sep 17 00:00:00 2001 From: Andy Adamson Date: Thu, 6 Jan 2011 02:04:32 +0000 Subject: NFS refactor nfs_find_client and reference client across callback processing Fixes a bug where the nfs_client could be freed during callback processing. Refactor nfs_find_client to use minorversion specific means to locate the correct nfs_client structure. In the NFS layer, V4.0 clients are found using the callback_ident field in the CB_COMPOUND header. V4.1 clients are found using the sessionID in the CB_SEQUENCE operation which is also compared against the sessionID associated with the back channel thread after a successful CREATE_SESSION. Each of these methods finds the one an only nfs_client associated with the incoming callback request - so nfs_find_client_next is not needed. In the RPC layer, the pg_authenticate call needs to find the nfs_client. For the v4.0 callback service, the callback identifier has not been decoded so a search by address, version, and minorversion is used. The sessionid for the sessions based callback service has (usually) not been set for the pg_authenticate on a CB_NULL call which can be sent prior to the return of a CREATE_SESSION call, so the sessionid associated with the back channel thread is not used to find the client in pg_authenticate for CB_NULL calls. Pass the referenced nfs_client to each CB_COMPOUND operation being proceesed via the new cb_process_state structure. The reference is held across cb_compound processing. Use the new cb_process_state struct to move the NFS4ERR_RETRY_UNCACHED_REP processing from process_op into nfs4_callback_sequence where it belongs. Signed-off-by: Andy Adamson Signed-off-by: Trond Myklebust --- include/linux/sunrpc/bc_xprt.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'include/linux') diff --git a/include/linux/sunrpc/bc_xprt.h b/include/linux/sunrpc/bc_xprt.h index 7c91260c44a9..2c60e094fdec 100644 --- a/include/linux/sunrpc/bc_xprt.h +++ b/include/linux/sunrpc/bc_xprt.h @@ -47,6 +47,14 @@ static inline int svc_is_backchannel(const struct svc_rqst *rqstp) return 1; return 0; } +static inline struct nfs4_sessionid *bc_xprt_sid(struct svc_rqst *rqstp) +{ + if (svc_is_backchannel(rqstp)) + return (struct nfs4_sessionid *) + rqstp->rq_server->bc_xprt->xpt_bc_sid; + return NULL; +} + #else /* CONFIG_NFS_V4_1 */ static inline int xprt_setup_backchannel(struct rpc_xprt *xprt, unsigned int min_reqs) @@ -59,6 +67,11 @@ static inline int svc_is_backchannel(const struct svc_rqst *rqstp) return 0; } +static inline struct nfs4_sessionid *bc_xprt_sid(struct svc_rqst *rqstp) +{ + return NULL; +} + static inline void xprt_free_bc_request(struct rpc_rqst *req) { } -- cgit v1.2.3 From 42acd021824578fa0eeb6eb58d457c23ec5dc9c0 Mon Sep 17 00:00:00 2001 From: Andy Adamson Date: Thu, 6 Jan 2011 02:04:34 +0000 Subject: NFS add session back channel draining Currently session draining only drains the fore channel. The back channel processing must also be drained. Use the back channel highest_slot_used to indicate that a callback is being processed by the callback thread. Move the session complete to be per channel. When the session is draininig, wait for any current back channel processing to complete and stop all new back channel processing by returning NFS4ERR_DELAY to the back channel client. Drain the back channel, then the fore channel. Signed-off-by: Andy Adamson Signed-off-by: Trond Myklebust --- include/linux/nfs_fs_sb.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h index 1eaa054a2c7d..e93ada0565fc 100644 --- a/include/linux/nfs_fs_sb.h +++ b/include/linux/nfs_fs_sb.h @@ -197,6 +197,7 @@ struct nfs4_slot_table { * op for dynamic resizing */ int target_max_slots; /* Set by CB_RECALL_SLOT as * the new max_slots */ + struct completion complete; }; static inline int slot_idx(struct nfs4_slot_table *tbl, struct nfs4_slot *sp) @@ -213,7 +214,6 @@ struct nfs4_session { unsigned long session_state; u32 hash_alg; u32 ssv_len; - struct completion complete; /* The fore and back channel */ struct nfs4_channel_attrs fc_attrs; -- cgit v1.2.3 From 4a19de0f4b693139bb10b7cc3cfe1f618576ba67 Mon Sep 17 00:00:00 2001 From: Andy Adamson Date: Thu, 6 Jan 2011 02:04:35 +0000 Subject: NFS rename client back channel transport field Differentiate from server backchannel Signed-off-by: Andy Adamson Acked-by: Bruce Fields Signed-off-by: Trond Myklebust --- include/linux/sunrpc/bc_xprt.h | 4 ++-- include/linux/sunrpc/svc.h | 2 +- 2 files changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/sunrpc/bc_xprt.h b/include/linux/sunrpc/bc_xprt.h index 2c60e094fdec..c50b458b8a3f 100644 --- a/include/linux/sunrpc/bc_xprt.h +++ b/include/linux/sunrpc/bc_xprt.h @@ -43,7 +43,7 @@ int bc_send(struct rpc_rqst *req); */ static inline int svc_is_backchannel(const struct svc_rqst *rqstp) { - if (rqstp->rq_server->bc_xprt) + if (rqstp->rq_server->sv_bc_xprt) return 1; return 0; } @@ -51,7 +51,7 @@ static inline struct nfs4_sessionid *bc_xprt_sid(struct svc_rqst *rqstp) { if (svc_is_backchannel(rqstp)) return (struct nfs4_sessionid *) - rqstp->rq_server->bc_xprt->xpt_bc_sid; + rqstp->rq_server->sv_bc_xprt->xpt_bc_sid; return NULL; } diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h index 5a3085b9b394..c81d4d8be3a9 100644 --- a/include/linux/sunrpc/svc.h +++ b/include/linux/sunrpc/svc.h @@ -99,7 +99,7 @@ struct svc_serv { spinlock_t sv_cb_lock; /* protects the svc_cb_list */ wait_queue_head_t sv_cb_waitq; /* sleep here if there are no * entries in the svc_cb_list */ - struct svc_xprt *bc_xprt; + struct svc_xprt *sv_bc_xprt; /* callback on fore channel */ #endif /* CONFIG_NFS_V4_1 */ }; -- cgit v1.2.3 From daaa82d1c72e10dc16cad3a810e225f9188dc7aa Mon Sep 17 00:00:00 2001 From: Fred Isaman Date: Thu, 6 Jan 2011 11:36:19 +0000 Subject: pnfs: remove unnecessary field lgp->status Signed-off-by: Fred Isaman Signed-off-by: Benny Halevy Signed-off-by: Trond Myklebust --- include/linux/nfs_xdr.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 236e7e4b99a0..8fcc54267bba 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -223,7 +223,6 @@ struct nfs4_layoutget { struct nfs4_layoutget_args args; struct nfs4_layoutget_res res; struct pnfs_layout_segment **lsegpp; - int status; }; struct nfs4_getdeviceinfo_args { -- cgit v1.2.3 From cf7d63f1f9895713551df2e6d18b006f8af26e91 Mon Sep 17 00:00:00 2001 From: Fred Isaman Date: Thu, 6 Jan 2011 11:36:25 +0000 Subject: pnfs: serialize LAYOUTGET(openstateid) We shouldn't send a LAYOUTGET(openstateid) unless all outstanding RPCs using the previous stateid are completed. This requires choosing the stateid to encode earlier, so we can abort if one is not available (we want to use the open stateid, but a LAYOUTGET is already out using it), and adding a count of the number of outstanding rpc calls using layout state (which for now consist solely of LAYOUTGETs). Signed-off-by: Fred Isaman Signed-off-by: Trond Myklebust --- include/linux/nfs_xdr.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 8fcc54267bba..83d36d3a12e6 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -208,6 +208,7 @@ struct nfs4_layoutget_args { struct inode *inode; struct nfs_open_context *ctx; struct nfs4_sequence_args seq_args; + nfs4_stateid stateid; }; struct nfs4_layoutget_res { -- cgit v1.2.3 From f7e8917a67980924651a9e244510e63ef05c7755 Mon Sep 17 00:00:00 2001 From: Fred Isaman Date: Thu, 6 Jan 2011 11:36:32 +0000 Subject: pnfs: layout roc code A layout can request return-on-close. How this interacts with the forgetful model of never sending LAYOUTRETURNS is a bit ambiguous. We forget any layouts marked roc, and wait for them to be completely forgotten before continuing with the close. In addition, to compensate for races with any inflight LAYOUTGETs, and the fact that we do not get any layout stateid back from the server, we set the barrier to the worst case scenario of current_seqid + number of outstanding LAYOUTGETS. Signed-off-by: Fred Isaman Signed-off-by: Trond Myklebust --- include/linux/nfs_fs_sb.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h index e93ada0565fc..7f20c0b47a91 100644 --- a/include/linux/nfs_fs_sb.h +++ b/include/linux/nfs_fs_sb.h @@ -149,6 +149,7 @@ struct nfs_server { that are supported on this filesystem */ struct pnfs_layoutdriver_type *pnfs_curr_ld; /* Active layout driver */ + struct rpc_wait_queue roc_rpcwaitq; #endif void (*destroy)(struct nfs_server *); -- cgit v1.2.3 From 24d292b894273495f9664bb495e575f8cb7e8cac Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Fri, 24 Dec 2010 01:32:43 +0000 Subject: NFS: Move cl_state_owners and related fields to the nfs_server struct NFSv4 migration needs to reassociate state owners from the source to the destination nfs_server data structures. To make that easier, move the cl_state_owners field to the nfs_server struct. cl_openowner_id and cl_lockowner_id accompany this move, as they are used in conjunction with cl_state_owners. The cl_lock field in the parent nfs_client continues to protect all three of these fields. Signed-off-by: Chuck Lever Signed-off-by: Trond Myklebust --- include/linux/nfs_fs_sb.h | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h index 7f20c0b47a91..27255ffdbe10 100644 --- a/include/linux/nfs_fs_sb.h +++ b/include/linux/nfs_fs_sb.h @@ -47,11 +47,7 @@ struct nfs_client { u64 cl_clientid; /* constant */ unsigned long cl_state; - struct rb_root cl_openowner_id; - struct rb_root cl_lockowner_id; - struct list_head cl_delegations; - struct rb_root cl_state_owners; spinlock_t cl_lock; unsigned long cl_lease_time; @@ -150,6 +146,11 @@ struct nfs_server { filesystem */ struct pnfs_layoutdriver_type *pnfs_curr_ld; /* Active layout driver */ struct rpc_wait_queue roc_rpcwaitq; + + /* the following fields are protected by nfs_client->cl_lock */ + struct rb_root state_owners; + struct rb_root openowner_id; + struct rb_root lockowner_id; #endif void (*destroy)(struct nfs_server *); -- cgit v1.2.3 From d3978bb325510f0a26ebd92f211b36c5f98b2306 Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Fri, 24 Dec 2010 01:33:04 +0000 Subject: NFS: Move cl_delegations to the nfs_server struct Delegations are per-inode, not per-nfs_client. When a server file system is migrated, delegations on the client must be moved from the source to the destination nfs_server. Make it easier to manage a mount point's delegation list across a migration event by moving the list to the nfs_server struct. Clean up: I added documenting comments to public functions I changed in this patch. For consistency I added comments to all the other public functions in fs/nfs/delegation.c. Signed-off-by: Chuck Lever Signed-off-by: Trond Myklebust --- include/linux/nfs_fs_sb.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h index 27255ffdbe10..b197563913bf 100644 --- a/include/linux/nfs_fs_sb.h +++ b/include/linux/nfs_fs_sb.h @@ -47,7 +47,6 @@ struct nfs_client { u64 cl_clientid; /* constant */ unsigned long cl_state; - struct list_head cl_delegations; spinlock_t cl_lock; unsigned long cl_lease_time; @@ -152,6 +151,7 @@ struct nfs_server { struct rb_root openowner_id; struct rb_root lockowner_id; #endif + struct list_head delegations; void (*destroy)(struct nfs_server *); atomic_t active; /* Keep trace of any activity to this server */ -- cgit v1.2.3 From d035c36c58dd9183ad6aa7875dea89893faedb55 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 21 Dec 2010 10:45:27 -0500 Subject: NFSv4: Ensure continued open and lockowner name uniqueness In order to enable migration support, we will want to move some of the structures that are subject to migration into the struct nfs_server. In particular, if we are to move the state_owner and state_owner_id to being a per-filesystem structure, then we should label the resulting open/lock owners with a per-filesytem label to ensure global uniqueness. This patch does so by adding the super block s_dev to the open/lock owner name. Signed-off-by: Trond Myklebust --- include/linux/nfs_xdr.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 83d36d3a12e6..b0068579bec2 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -317,6 +317,7 @@ struct nfs_closeres { struct nfs_lowner { __u64 clientid; __u64 id; + dev_t s_dev; }; struct nfs_lock_args { -- cgit v1.2.3 From 26fcaf60fe3861409eb4c455c5c0d0f00f599b08 Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Fri, 7 Jan 2011 01:42:31 +0100 Subject: PM: Fix oops in suspend/hibernate code related to failing ioremap() When ioremap() fails (which might happen for some reason), we nicely oops in suspend_nvs_save() due to NULL dereference by memcpy() in there. Fail gracefully instead. Signed-off-by: Jiri Slaby Signed-off-by: Rafael J. Wysocki Signed-off-by: Len Brown --- include/linux/suspend.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/suspend.h b/include/linux/suspend.h index 26697514c5ec..acb7d911bb0c 100644 --- a/include/linux/suspend.h +++ b/include/linux/suspend.h @@ -262,7 +262,7 @@ static inline bool system_entering_hibernation(void) { return false; } extern int suspend_nvs_register(unsigned long start, unsigned long size); extern int suspend_nvs_alloc(void); extern void suspend_nvs_free(void); -extern void suspend_nvs_save(void); +extern int suspend_nvs_save(void); extern void suspend_nvs_restore(void); #else /* CONFIG_SUSPEND_NVS */ static inline int suspend_nvs_register(unsigned long a, unsigned long b) @@ -271,7 +271,7 @@ static inline int suspend_nvs_register(unsigned long a, unsigned long b) } static inline int suspend_nvs_alloc(void) { return 0; } static inline void suspend_nvs_free(void) {} -static inline void suspend_nvs_save(void) {} +static inline int suspend_nvs_save(void) {} static inline void suspend_nvs_restore(void) {} #endif /* CONFIG_SUSPEND_NVS */ -- cgit v1.2.3 From 976513dbfc1547c7b1822566923058655f0c32fd Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Fri, 7 Jan 2011 01:43:44 +0100 Subject: PM / ACPI: Move NVS saving and restoring code to drivers/acpi The saving of the ACPI NVS area during hibernation and suspend and restoring it during the subsequent resume is entirely specific to ACPI, so move it to drivers/acpi and drop the CONFIG_SUSPEND_NVS configuration option which is redundant. Signed-off-by: Rafael J. Wysocki Signed-off-by: Len Brown --- include/linux/acpi.h | 9 +++++++++ include/linux/suspend.h | 17 ----------------- 2 files changed, 9 insertions(+), 17 deletions(-) (limited to 'include/linux') diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 67c91b4418b0..fa7ed6a983d0 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -254,6 +254,15 @@ void __init acpi_old_suspend_ordering(void); void __init acpi_nvs_nosave(void); #endif /* CONFIG_PM_SLEEP */ +#ifdef CONFIG_ACPI_SLEEP +int suspend_nvs_register(unsigned long start, unsigned long size); +#else +static inline int suspend_nvs_register(unsigned long a, unsigned long b) +{ + return 0; +} +#endif + struct acpi_osc_context { char *uuid_str; /* uuid string */ int rev; diff --git a/include/linux/suspend.h b/include/linux/suspend.h index acb7d911bb0c..0e288e3c37be 100644 --- a/include/linux/suspend.h +++ b/include/linux/suspend.h @@ -258,23 +258,6 @@ static inline int hibernate(void) { return -ENOSYS; } static inline bool system_entering_hibernation(void) { return false; } #endif /* CONFIG_HIBERNATION */ -#ifdef CONFIG_SUSPEND_NVS -extern int suspend_nvs_register(unsigned long start, unsigned long size); -extern int suspend_nvs_alloc(void); -extern void suspend_nvs_free(void); -extern int suspend_nvs_save(void); -extern void suspend_nvs_restore(void); -#else /* CONFIG_SUSPEND_NVS */ -static inline int suspend_nvs_register(unsigned long a, unsigned long b) -{ - return 0; -} -static inline int suspend_nvs_alloc(void) { return 0; } -static inline void suspend_nvs_free(void) {} -static inline int suspend_nvs_save(void) {} -static inline void suspend_nvs_restore(void) {} -#endif /* CONFIG_SUSPEND_NVS */ - #ifdef CONFIG_PM_SLEEP void save_processor_state(void); void restore_processor_state(void); -- cgit v1.2.3 From ccd35fb9f4da856b105ea0f1e0cab3702e8ae6ba Mon Sep 17 00:00:00 2001 From: Nick Piggin Date: Fri, 7 Jan 2011 17:49:17 +1100 Subject: kernel: kmem_ptr_validate considered harmful This is a nasty and error prone API. It is no longer used, remove it. Signed-off-by: Nick Piggin --- include/linux/slab.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/slab.h b/include/linux/slab.h index 59260e21bdf5..fa9086647eb7 100644 --- a/include/linux/slab.h +++ b/include/linux/slab.h @@ -106,8 +106,6 @@ int kmem_cache_shrink(struct kmem_cache *); void kmem_cache_free(struct kmem_cache *, void *); unsigned int kmem_cache_size(struct kmem_cache *); const char *kmem_cache_name(struct kmem_cache *); -int kern_ptr_validate(const void *ptr, unsigned long size); -int kmem_ptr_validate(struct kmem_cache *cachep, const void *ptr); /* * Please use this macro to create slab caches. Simply specify the -- cgit v1.2.3 From 5eef7fa905c814826f518aca2d414ca77508ce30 Mon Sep 17 00:00:00 2001 From: Nick Piggin Date: Fri, 7 Jan 2011 17:49:22 +1100 Subject: fs: dcache documentation cleanup Remove redundant (and incorrect, since dcache RCU lookup) dentry locking documentation and point to the canonical document. Signed-off-by: Nick Piggin --- include/linux/dcache.h | 18 ++++++------------ 1 file changed, 6 insertions(+), 12 deletions(-) (limited to 'include/linux') diff --git a/include/linux/dcache.h b/include/linux/dcache.h index 6a4aea30aa09..fff975576b5b 100644 --- a/include/linux/dcache.h +++ b/include/linux/dcache.h @@ -141,22 +141,16 @@ struct dentry_operations { char *(*d_dname)(struct dentry *, char *, int); }; -/* the dentry parameter passed to d_hash and d_compare is the parent +/* + * Locking rules for dentry_operations callbacks are to be found in + * Documentation/filesystems/Locking. Keep it updated! + * + * the dentry parameter passed to d_hash and d_compare is the parent * directory of the entries to be compared. It is used in case these * functions need any directory specific information for determining * equivalency classes. Using the dentry itself might not work, as it * might be a negative dentry which has no information associated with - * it */ - -/* -locking rules: - big lock dcache_lock d_lock may block -d_revalidate: no no no yes -d_hash no no no yes -d_compare: no yes yes no -d_delete: no yes no no -d_release: no no no yes -d_iput: no no no yes + * it. */ /* d_flags entries */ -- cgit v1.2.3 From fe15ce446beb3a33583af81ffe6c9d01a75314ed Mon Sep 17 00:00:00 2001 From: Nick Piggin Date: Fri, 7 Jan 2011 17:49:23 +1100 Subject: fs: change d_delete semantics Change d_delete from a dentry deletion notification to a dentry caching advise, more like ->drop_inode. Require it to be constant and idempotent, and not take d_lock. This is how all existing filesystems use the callback anyway. This makes fine grained dentry locking of dput and dentry lru scanning much simpler. Signed-off-by: Nick Piggin --- include/linux/dcache.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/dcache.h b/include/linux/dcache.h index fff975576b5b..cbfc9567e4e9 100644 --- a/include/linux/dcache.h +++ b/include/linux/dcache.h @@ -133,9 +133,9 @@ enum dentry_d_lock_class struct dentry_operations { int (*d_revalidate)(struct dentry *, struct nameidata *); - int (*d_hash) (struct dentry *, struct qstr *); - int (*d_compare) (struct dentry *, struct qstr *, struct qstr *); - int (*d_delete)(struct dentry *); + int (*d_hash)(struct dentry *, struct qstr *); + int (*d_compare)(struct dentry *, struct qstr *, struct qstr *); + int (*d_delete)(const struct dentry *); void (*d_release)(struct dentry *); void (*d_iput)(struct dentry *, struct inode *); char *(*d_dname)(struct dentry *, char *, int); -- cgit v1.2.3 From fb2d5b86aff355a27ebfc132d3c99f4a940cc3fe Mon Sep 17 00:00:00 2001 From: Nick Piggin Date: Fri, 7 Jan 2011 17:49:26 +1100 Subject: fs: name case update method smpfs and ncpfs want to update a live dentry name in-place. Rather than have them open code the locking, provide a documented dcache API. Signed-off-by: Nick Piggin --- include/linux/dcache.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/dcache.h b/include/linux/dcache.h index cbfc9567e4e9..6cdf4995c90a 100644 --- a/include/linux/dcache.h +++ b/include/linux/dcache.h @@ -290,6 +290,8 @@ static inline struct dentry *d_add_unique(struct dentry *entry, struct inode *in return res; } +extern void dentry_update_name_case(struct dentry *, struct qstr *); + /* used for rename() and baskets */ extern void d_move(struct dentry *, struct dentry *); extern struct dentry *d_ancestor(struct dentry *, struct dentry *); -- cgit v1.2.3 From 621e155a3591962420eacdd39f6f0aa29ceb221e Mon Sep 17 00:00:00 2001 From: Nick Piggin Date: Fri, 7 Jan 2011 17:49:27 +1100 Subject: fs: change d_compare for rcu-walk Change d_compare so it may be called from lock-free RCU lookups. This does put significant restrictions on what may be done from the callback, however there don't seem to have been any problems with in-tree fses. If some strange use case pops up that _really_ cannot cope with the rcu-walk rules, we can just add new rcu-unaware callbacks, which would cause name lookup to drop out of rcu-walk mode. For in-tree filesystems, this is just a mechanical change. Signed-off-by: Nick Piggin --- include/linux/dcache.h | 12 +++++------- include/linux/ncp_fs.h | 4 ++-- 2 files changed, 7 insertions(+), 9 deletions(-) (limited to 'include/linux') diff --git a/include/linux/dcache.h b/include/linux/dcache.h index 6cdf4995c90a..75a072bf2a34 100644 --- a/include/linux/dcache.h +++ b/include/linux/dcache.h @@ -134,7 +134,9 @@ enum dentry_d_lock_class struct dentry_operations { int (*d_revalidate)(struct dentry *, struct nameidata *); int (*d_hash)(struct dentry *, struct qstr *); - int (*d_compare)(struct dentry *, struct qstr *, struct qstr *); + int (*d_compare)(const struct dentry *, const struct inode *, + const struct dentry *, const struct inode *, + unsigned int, const char *, const struct qstr *); int (*d_delete)(const struct dentry *); void (*d_release)(struct dentry *); void (*d_iput)(struct dentry *, struct inode *); @@ -145,12 +147,8 @@ struct dentry_operations { * Locking rules for dentry_operations callbacks are to be found in * Documentation/filesystems/Locking. Keep it updated! * - * the dentry parameter passed to d_hash and d_compare is the parent - * directory of the entries to be compared. It is used in case these - * functions need any directory specific information for determining - * equivalency classes. Using the dentry itself might not work, as it - * might be a negative dentry which has no information associated with - * it. + * FUrther descriptions are found in Documentation/filesystems/vfs.txt. + * Keep it updated too! */ /* d_flags entries */ diff --git a/include/linux/ncp_fs.h b/include/linux/ncp_fs.h index ef663061d5ac..1c27f201c856 100644 --- a/include/linux/ncp_fs.h +++ b/include/linux/ncp_fs.h @@ -184,13 +184,13 @@ struct ncp_entry_info { __u8 file_handle[6]; }; -static inline struct ncp_server *NCP_SBP(struct super_block *sb) +static inline struct ncp_server *NCP_SBP(const struct super_block *sb) { return sb->s_fs_info; } #define NCP_SERVER(inode) NCP_SBP((inode)->i_sb) -static inline struct ncp_inode_info *NCP_FINFO(struct inode *inode) +static inline struct ncp_inode_info *NCP_FINFO(const struct inode *inode) { return container_of(inode, struct ncp_inode_info, vfs_inode); } -- cgit v1.2.3 From b1e6a015a580ad145689ad1d6b4aa0e03e6c868b Mon Sep 17 00:00:00 2001 From: Nick Piggin Date: Fri, 7 Jan 2011 17:49:28 +1100 Subject: fs: change d_hash for rcu-walk Change d_hash so it may be called from lock-free RCU lookups. See similar patch for d_compare for details. For in-tree filesystems, this is just a mechanical change. Signed-off-by: Nick Piggin --- include/linux/dcache.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/dcache.h b/include/linux/dcache.h index 75a072bf2a34..1149e706f04d 100644 --- a/include/linux/dcache.h +++ b/include/linux/dcache.h @@ -133,7 +133,8 @@ enum dentry_d_lock_class struct dentry_operations { int (*d_revalidate)(struct dentry *, struct nameidata *); - int (*d_hash)(struct dentry *, struct qstr *); + int (*d_hash)(const struct dentry *, const struct inode *, + struct qstr *); int (*d_compare)(const struct dentry *, const struct inode *, const struct dentry *, const struct inode *, unsigned int, const char *, const struct qstr *); -- cgit v1.2.3 From ec2447c278ee973d35f38e53ca16ba7f965ae33d Mon Sep 17 00:00:00 2001 From: Nick Piggin Date: Fri, 7 Jan 2011 17:49:29 +1100 Subject: hostfs: simplify locking Remove dcache_lock locking from hostfs filesystem, and move it into dcache helpers. All that is required is a coherent path name. Protection from concurrent modification of the namespace after path name generation is not provided in current code, because dcache_lock is dropped before the path is used. Signed-off-by: Nick Piggin --- include/linux/dcache.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/dcache.h b/include/linux/dcache.h index 1149e706f04d..cea27dfca532 100644 --- a/include/linux/dcache.h +++ b/include/linux/dcache.h @@ -311,7 +311,7 @@ extern char *dynamic_dname(struct dentry *, char *, int, const char *, ...); extern char *__d_path(const struct path *path, struct path *root, char *, int); extern char *d_path(const struct path *, char *, int); extern char *d_path_with_unreachable(const struct path *, char *, int); -extern char *__dentry_path(struct dentry *, char *, int); +extern char *dentry_path_raw(struct dentry *, char *, int); extern char *dentry_path(struct dentry *, char *, int); /* Allocation counts.. */ -- cgit v1.2.3 From 789680d1ee9311cdf095241dc02bd9784d799cd1 Mon Sep 17 00:00:00 2001 From: Nick Piggin Date: Fri, 7 Jan 2011 17:49:30 +1100 Subject: fs: dcache scale hash Add a new lock, dcache_hash_lock, to protect the dcache hash table from concurrent modification. d_hash is also protected by d_lock. Signed-off-by: Nick Piggin --- include/linux/dcache.h | 35 ++--------------------------------- 1 file changed, 2 insertions(+), 33 deletions(-) (limited to 'include/linux') diff --git a/include/linux/dcache.h b/include/linux/dcache.h index cea27dfca532..2feb624b67f1 100644 --- a/include/linux/dcache.h +++ b/include/linux/dcache.h @@ -184,39 +184,6 @@ struct dentry_operations { extern spinlock_t dcache_lock; extern seqlock_t rename_lock; -/** - * d_drop - drop a dentry - * @dentry: dentry to drop - * - * d_drop() unhashes the entry from the parent dentry hashes, so that it won't - * be found through a VFS lookup any more. Note that this is different from - * deleting the dentry - d_delete will try to mark the dentry negative if - * possible, giving a successful _negative_ lookup, while d_drop will - * just make the cache lookup fail. - * - * d_drop() is used mainly for stuff that wants to invalidate a dentry for some - * reason (NFS timeouts or autofs deletes). - * - * __d_drop requires dentry->d_lock. - */ - -static inline void __d_drop(struct dentry *dentry) -{ - if (!(dentry->d_flags & DCACHE_UNHASHED)) { - dentry->d_flags |= DCACHE_UNHASHED; - hlist_del_rcu(&dentry->d_hash); - } -} - -static inline void d_drop(struct dentry *dentry) -{ - spin_lock(&dcache_lock); - spin_lock(&dentry->d_lock); - __d_drop(dentry); - spin_unlock(&dentry->d_lock); - spin_unlock(&dcache_lock); -} - static inline int dname_external(struct dentry *dentry) { return dentry->d_name.name != dentry->d_iname; @@ -228,6 +195,8 @@ static inline int dname_external(struct dentry *dentry) extern void d_instantiate(struct dentry *, struct inode *); extern struct dentry * d_instantiate_unique(struct dentry *, struct inode *); extern struct dentry * d_materialise_unique(struct dentry *, struct inode *); +extern void __d_drop(struct dentry *dentry); +extern void d_drop(struct dentry *dentry); extern void d_delete(struct dentry *); /* allocate/de-allocate */ -- cgit v1.2.3 From b7ab39f631f505edc2bbdb86620d5493f995c9da Mon Sep 17 00:00:00 2001 From: Nick Piggin Date: Fri, 7 Jan 2011 17:49:32 +1100 Subject: fs: dcache scale dentry refcount Make d_count non-atomic and protect it with d_lock. This allows us to ensure a 0 refcount dentry remains 0 without dcache_lock. It is also fairly natural when we start protecting many other dentry members with d_lock. Signed-off-by: Nick Piggin --- include/linux/dcache.h | 29 +++++++++++++++-------------- 1 file changed, 15 insertions(+), 14 deletions(-) (limited to 'include/linux') diff --git a/include/linux/dcache.h b/include/linux/dcache.h index 2feb624b67f1..b0ade2d46805 100644 --- a/include/linux/dcache.h +++ b/include/linux/dcache.h @@ -87,7 +87,7 @@ full_name_hash(const unsigned char *name, unsigned int len) #endif struct dentry { - atomic_t d_count; + unsigned int d_count; /* protected by d_lock */ unsigned int d_flags; /* protected by d_lock */ spinlock_t d_lock; /* per dentry lock */ int d_mounted; @@ -297,17 +297,28 @@ extern char *dentry_path(struct dentry *, char *, int); * needs and they take necessary precautions) you should hold dcache_lock * and call dget_locked() instead of dget(). */ - +static inline struct dentry *dget_dlock(struct dentry *dentry) +{ + if (dentry) { + BUG_ON(!dentry->d_count); + dentry->d_count++; + } + return dentry; +} static inline struct dentry *dget(struct dentry *dentry) { if (dentry) { - BUG_ON(!atomic_read(&dentry->d_count)); - atomic_inc(&dentry->d_count); + spin_lock(&dentry->d_lock); + dget_dlock(dentry); + spin_unlock(&dentry->d_lock); } return dentry; } extern struct dentry * dget_locked(struct dentry *); +extern struct dentry * dget_locked_dlock(struct dentry *); + +extern struct dentry *dget_parent(struct dentry *dentry); /** * d_unhashed - is dentry hashed @@ -338,16 +349,6 @@ static inline void dont_mount(struct dentry *dentry) spin_unlock(&dentry->d_lock); } -static inline struct dentry *dget_parent(struct dentry *dentry) -{ - struct dentry *ret; - - spin_lock(&dentry->d_lock); - ret = dget(dentry->d_parent); - spin_unlock(&dentry->d_lock); - return ret; -} - extern void dput(struct dentry *); static inline int d_mountpoint(struct dentry *dentry) -- cgit v1.2.3 From 2fd6b7f50797f2e993eea59e0a0b8c6399c811dc Mon Sep 17 00:00:00 2001 From: Nick Piggin Date: Fri, 7 Jan 2011 17:49:34 +1100 Subject: fs: dcache scale subdirs Protect d_subdirs and d_child with d_lock, except in filesystems that aren't using dcache_lock for these anyway (eg. using i_mutex). Note: if we change the locking rule in future so that ->d_child protection is provided only with ->d_parent->d_lock, it may allow us to reduce some locking. But it would be an exception to an otherwise regular locking scheme, so we'd have to see some good results. Probably not worthwhile. Signed-off-by: Nick Piggin --- include/linux/dcache.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/dcache.h b/include/linux/dcache.h index b0ade2d46805..ddf4f55624f7 100644 --- a/include/linux/dcache.h +++ b/include/linux/dcache.h @@ -305,6 +305,7 @@ static inline struct dentry *dget_dlock(struct dentry *dentry) } return dentry; } + static inline struct dentry *dget(struct dentry *dentry) { if (dentry) { -- cgit v1.2.3 From b23fb0a60379a95e10c671f646b259ea2558421e Mon Sep 17 00:00:00 2001 From: Nick Piggin Date: Fri, 7 Jan 2011 17:49:35 +1100 Subject: fs: scale inode alias list Add a new lock, dcache_inode_lock, to protect the inode's i_dentry list from concurrent modification. d_alias is also protected by d_lock. Signed-off-by: Nick Piggin --- include/linux/dcache.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/dcache.h b/include/linux/dcache.h index ddf4f55624f7..bda5ec0b077d 100644 --- a/include/linux/dcache.h +++ b/include/linux/dcache.h @@ -181,6 +181,7 @@ struct dentry_operations { #define DCACHE_CANT_MOUNT 0x0100 +extern spinlock_t dcache_inode_lock; extern spinlock_t dcache_lock; extern seqlock_t rename_lock; -- cgit v1.2.3 From 949854d02455080d20cd3e1db28a3a18daf7599d Mon Sep 17 00:00:00 2001 From: Nick Piggin Date: Fri, 7 Jan 2011 17:49:37 +1100 Subject: fs: Use rename lock and RCU for multi-step operations The remaining usages for dcache_lock is to allow atomic, multi-step read-side operations over the directory tree by excluding modifications to the tree. Also, to walk in the leaf->root direction in the tree where we don't have a natural d_lock ordering. This could be accomplished by taking every d_lock, but this would mean a huge number of locks and actually gets very tricky. Solve this instead by using the rename seqlock for multi-step read-side operations, retry in case of a rename so we don't walk up the wrong parent. Concurrent dentry insertions are not serialised against. Concurrent deletes are tricky when walking up the directory: our parent might have been deleted when dropping locks so also need to check and retry for that. We can also use the rename lock in cases where livelock is a worry (and it is introduced in subsequent patch). Signed-off-by: Nick Piggin --- include/linux/dcache.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/dcache.h b/include/linux/dcache.h index bda5ec0b077d..c963ebada922 100644 --- a/include/linux/dcache.h +++ b/include/linux/dcache.h @@ -180,6 +180,7 @@ struct dentry_operations { #define DCACHE_FSNOTIFY_PARENT_WATCHED 0x0080 /* Parent inode is watched by some fsnotify listener */ #define DCACHE_CANT_MOUNT 0x0100 +#define DCACHE_GENOCIDE 0x0200 extern spinlock_t dcache_inode_lock; extern spinlock_t dcache_lock; -- cgit v1.2.3 From b5c84bf6f6fa3a7dfdcb556023a62953574b60ee Mon Sep 17 00:00:00 2001 From: Nick Piggin Date: Fri, 7 Jan 2011 17:49:38 +1100 Subject: fs: dcache remove dcache_lock dcache_lock no longer protects anything. remove it. Signed-off-by: Nick Piggin --- include/linux/dcache.h | 5 ++--- include/linux/fs.h | 6 +++++- include/linux/fsnotify.h | 2 -- include/linux/fsnotify_backend.h | 11 +++++++---- include/linux/namei.h | 1 - 5 files changed, 14 insertions(+), 11 deletions(-) (limited to 'include/linux') diff --git a/include/linux/dcache.h b/include/linux/dcache.h index c963ebada922..a2ceb94b0e38 100644 --- a/include/linux/dcache.h +++ b/include/linux/dcache.h @@ -183,7 +183,6 @@ struct dentry_operations { #define DCACHE_GENOCIDE 0x0200 extern spinlock_t dcache_inode_lock; -extern spinlock_t dcache_lock; extern seqlock_t rename_lock; static inline int dname_external(struct dentry *dentry) @@ -296,8 +295,8 @@ extern char *dentry_path(struct dentry *, char *, int); * destroyed when it has references. dget() should never be * called for dentries with zero reference counter. For these cases * (preferably none, functions in dcache.c are sufficient for normal - * needs and they take necessary precautions) you should hold dcache_lock - * and call dget_locked() instead of dget(). + * needs and they take necessary precautions) you should hold d_lock + * and call dget_dlock() instead of dget(). */ static inline struct dentry *dget_dlock(struct dentry *dentry) { diff --git a/include/linux/fs.h b/include/linux/fs.h index 090f0eacde29..296cf2fde945 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1378,7 +1378,7 @@ struct super_block { #else struct list_head s_files; #endif - /* s_dentry_lru and s_nr_dentry_unused are protected by dcache_lock */ + /* s_dentry_lru, s_nr_dentry_unused protected by dcache.c lru locks */ struct list_head s_dentry_lru; /* unused dentry lru */ int s_nr_dentry_unused; /* # of dentry on lru */ @@ -2446,6 +2446,10 @@ static inline ino_t parent_ino(struct dentry *dentry) { ino_t res; + /* + * Don't strictly need d_lock here? If the parent ino could change + * then surely we'd have a deeper race in the caller? + */ spin_lock(&dentry->d_lock); res = dentry->d_parent->d_inode->i_ino; spin_unlock(&dentry->d_lock); diff --git a/include/linux/fsnotify.h b/include/linux/fsnotify.h index b10bcdeaef76..2a53f10712b3 100644 --- a/include/linux/fsnotify.h +++ b/include/linux/fsnotify.h @@ -17,7 +17,6 @@ /* * fsnotify_d_instantiate - instantiate a dentry for inode - * Called with dcache_lock held. */ static inline void fsnotify_d_instantiate(struct dentry *dentry, struct inode *inode) @@ -62,7 +61,6 @@ static inline int fsnotify_perm(struct file *file, int mask) /* * fsnotify_d_move - dentry has been moved - * Called with dcache_lock and dentry->d_lock held. */ static inline void fsnotify_d_move(struct dentry *dentry) { diff --git a/include/linux/fsnotify_backend.h b/include/linux/fsnotify_backend.h index 7380763595d3..69ad89b50489 100644 --- a/include/linux/fsnotify_backend.h +++ b/include/linux/fsnotify_backend.h @@ -329,9 +329,15 @@ static inline void __fsnotify_update_dcache_flags(struct dentry *dentry) { struct dentry *parent; - assert_spin_locked(&dcache_lock); assert_spin_locked(&dentry->d_lock); + /* + * Serialisation of setting PARENT_WATCHED on the dentries is provided + * by d_lock. If inotify_inode_watched changes after we have taken + * d_lock, the following __fsnotify_update_child_dentry_flags call will + * find our entry, so it will spin until we complete here, and update + * us with the new state. + */ parent = dentry->d_parent; if (parent->d_inode && fsnotify_inode_watches_children(parent->d_inode)) dentry->d_flags |= DCACHE_FSNOTIFY_PARENT_WATCHED; @@ -341,15 +347,12 @@ static inline void __fsnotify_update_dcache_flags(struct dentry *dentry) /* * fsnotify_d_instantiate - instantiate a dentry for inode - * Called with dcache_lock held. */ static inline void __fsnotify_d_instantiate(struct dentry *dentry, struct inode *inode) { if (!inode) return; - assert_spin_locked(&dcache_lock); - spin_lock(&dentry->d_lock); __fsnotify_update_dcache_flags(dentry); spin_unlock(&dentry->d_lock); diff --git a/include/linux/namei.h b/include/linux/namei.h index 05b441d93642..aec730b53935 100644 --- a/include/linux/namei.h +++ b/include/linux/namei.h @@ -41,7 +41,6 @@ enum {LAST_NORM, LAST_ROOT, LAST_DOT, LAST_DOTDOT, LAST_BIND}; * - require a directory * - ending slashes ok even for nonexistent files * - internal "there are more path components" flag - * - locked when lookup done with dcache_lock held * - dentry cache is untrusted; force a real lookup */ #define LOOKUP_FOLLOW 1 -- cgit v1.2.3 From dc0474be3e27463d4d4a2793f82366eed906f223 Mon Sep 17 00:00:00 2001 From: Nick Piggin Date: Fri, 7 Jan 2011 17:49:43 +1100 Subject: fs: dcache rationalise dget variants dget_locked was a shortcut to avoid the lazy lru manipulation when we already held dcache_lock (lru manipulation was relatively cheap at that point). However, how that the lru lock is an innermost one, we never hold it at any caller, so the lock cost can now be avoided. We already have well working lazy dcache LRU, so it should be fine to defer LRU manipulations to scan time. Signed-off-by: Nick Piggin --- include/linux/dcache.h | 15 +++------------ 1 file changed, 3 insertions(+), 12 deletions(-) (limited to 'include/linux') diff --git a/include/linux/dcache.h b/include/linux/dcache.h index a2ceb94b0e38..ca648685f0cc 100644 --- a/include/linux/dcache.h +++ b/include/linux/dcache.h @@ -287,23 +287,17 @@ extern char *dentry_path(struct dentry *, char *, int); /* Allocation counts.. */ /** - * dget, dget_locked - get a reference to a dentry + * dget, dget_dlock - get a reference to a dentry * @dentry: dentry to get a reference to * * Given a dentry or %NULL pointer increment the reference count * if appropriate and return the dentry. A dentry will not be - * destroyed when it has references. dget() should never be - * called for dentries with zero reference counter. For these cases - * (preferably none, functions in dcache.c are sufficient for normal - * needs and they take necessary precautions) you should hold d_lock - * and call dget_dlock() instead of dget(). + * destroyed when it has references. */ static inline struct dentry *dget_dlock(struct dentry *dentry) { - if (dentry) { - BUG_ON(!dentry->d_count); + if (dentry) dentry->d_count++; - } return dentry; } @@ -317,9 +311,6 @@ static inline struct dentry *dget(struct dentry *dentry) return dentry; } -extern struct dentry * dget_locked(struct dentry *); -extern struct dentry * dget_locked_dlock(struct dentry *); - extern struct dentry *dget_parent(struct dentry *dentry); /** -- cgit v1.2.3 From fa0d7e3de6d6fc5004ad9dea0dd6b286af8f03e9 Mon Sep 17 00:00:00 2001 From: Nick Piggin Date: Fri, 7 Jan 2011 17:49:49 +1100 Subject: fs: icache RCU free inodes RCU free the struct inode. This will allow: - Subsequent store-free path walking patch. The inode must be consulted for permissions when walking, so an RCU inode reference is a must. - sb_inode_list_lock to be moved inside i_lock because sb list walkers who want to take i_lock no longer need to take sb_inode_list_lock to walk the list in the first place. This will simplify and optimize locking. - Could remove some nested trylock loops in dcache code - Could potentially simplify things a bit in VM land. Do not need to take the page lock to follow page->mapping. The downsides of this is the performance cost of using RCU. In a simple creat/unlink microbenchmark, performance drops by about 10% due to inability to reuse cache-hot slab objects. As iterations increase and RCU freeing starts kicking over, this increases to about 20%. In cases where inode lifetimes are longer (ie. many inodes may be allocated during the average life span of a single inode), a lot of this cache reuse is not applicable, so the regression caused by this patch is smaller. The cache-hot regression could largely be avoided by using SLAB_DESTROY_BY_RCU, however this adds some complexity to list walking and store-free path walking, so I prefer to implement this at a later date, if it is shown to be a win in real situations. I haven't found a regression in any non-micro benchmark so I doubt it will be a problem. Signed-off-by: Nick Piggin --- include/linux/fs.h | 5 ++++- include/linux/net.h | 1 - 2 files changed, 4 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index 296cf2fde945..1ff4d0a33b25 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -737,7 +737,10 @@ struct inode { struct list_head i_wb_list; /* backing dev IO list */ struct list_head i_lru; /* inode LRU list */ struct list_head i_sb_list; - struct list_head i_dentry; + union { + struct list_head i_dentry; + struct rcu_head i_rcu; + }; unsigned long i_ino; atomic_t i_count; unsigned int i_nlink; diff --git a/include/linux/net.h b/include/linux/net.h index 16faa130088c..06bde4908473 100644 --- a/include/linux/net.h +++ b/include/linux/net.h @@ -120,7 +120,6 @@ enum sock_shutdown_cmd { struct socket_wq { wait_queue_head_t wait; struct fasync_struct *fasync_list; - struct rcu_head rcu; } ____cacheline_aligned_in_smp; /** -- cgit v1.2.3 From ff0c7d15f9787b7e8c601533c015295cc68329f8 Mon Sep 17 00:00:00 2001 From: Nick Piggin Date: Fri, 7 Jan 2011 17:49:50 +1100 Subject: fs: avoid inode RCU freeing for pseudo fs Pseudo filesystems that don't put inode on RCU list or reachable by rcu-walk dentries do not need to RCU free their inodes. Signed-off-by: Nick Piggin --- include/linux/fs.h | 1 + include/linux/net.h | 1 + 2 files changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index 1ff4d0a33b25..ea202fff44f8 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2233,6 +2233,7 @@ extern void iget_failed(struct inode *); extern void end_writeback(struct inode *); extern void __destroy_inode(struct inode *); extern struct inode *new_inode(struct super_block *); +extern void free_inode_nonrcu(struct inode *inode); extern int should_remove_suid(struct dentry *); extern int file_remove_suid(struct file *); diff --git a/include/linux/net.h b/include/linux/net.h index 06bde4908473..16faa130088c 100644 --- a/include/linux/net.h +++ b/include/linux/net.h @@ -120,6 +120,7 @@ enum sock_shutdown_cmd { struct socket_wq { wait_queue_head_t wait; struct fasync_struct *fasync_list; + struct rcu_head rcu; } ____cacheline_aligned_in_smp; /** -- cgit v1.2.3 From 3c22cd5709e8143444a6d08682a87f4c57902df3 Mon Sep 17 00:00:00 2001 From: Nick Piggin Date: Fri, 7 Jan 2011 17:49:51 +1100 Subject: kernel: optimise seqlock Add branch annotations for seqlock read fastpath, and introduce __read_seqcount_begin and __read_seqcount_end functions, that can avoid the smp_rmb() if used carefully. These will be used by store-free path walking algorithm performance is critical and seqlocks are in use. Signed-off-by: Nick Piggin --- include/linux/seqlock.h | 80 ++++++++++++++++++++++++++++++++++++++++++++----- 1 file changed, 73 insertions(+), 7 deletions(-) (limited to 'include/linux') diff --git a/include/linux/seqlock.h b/include/linux/seqlock.h index 632205ccc25d..e98cd2e57194 100644 --- a/include/linux/seqlock.h +++ b/include/linux/seqlock.h @@ -107,7 +107,7 @@ static __always_inline int read_seqretry(const seqlock_t *sl, unsigned start) { smp_rmb(); - return (sl->sequence != start); + return unlikely(sl->sequence != start); } @@ -125,14 +125,25 @@ typedef struct seqcount { #define SEQCNT_ZERO { 0 } #define seqcount_init(x) do { *(x) = (seqcount_t) SEQCNT_ZERO; } while (0) -/* Start of read using pointer to a sequence counter only. */ -static inline unsigned read_seqcount_begin(const seqcount_t *s) +/** + * __read_seqcount_begin - begin a seq-read critical section (without barrier) + * @s: pointer to seqcount_t + * Returns: count to be passed to read_seqcount_retry + * + * __read_seqcount_begin is like read_seqcount_begin, but has no smp_rmb() + * barrier. Callers should ensure that smp_rmb() or equivalent ordering is + * provided before actually loading any of the variables that are to be + * protected in this critical section. + * + * Use carefully, only in critical code, and comment how the barrier is + * provided. + */ +static inline unsigned __read_seqcount_begin(const seqcount_t *s) { unsigned ret; repeat: ret = s->sequence; - smp_rmb(); if (unlikely(ret & 1)) { cpu_relax(); goto repeat; @@ -140,14 +151,56 @@ repeat: return ret; } -/* - * Test if reader processed invalid data because sequence number has changed. +/** + * read_seqcount_begin - begin a seq-read critical section + * @s: pointer to seqcount_t + * Returns: count to be passed to read_seqcount_retry + * + * read_seqcount_begin opens a read critical section of the given seqcount. + * Validity of the critical section is tested by checking read_seqcount_retry + * function. + */ +static inline unsigned read_seqcount_begin(const seqcount_t *s) +{ + unsigned ret = __read_seqcount_begin(s); + smp_rmb(); + return ret; +} + +/** + * __read_seqcount_retry - end a seq-read critical section (without barrier) + * @s: pointer to seqcount_t + * @start: count, from read_seqcount_begin + * Returns: 1 if retry is required, else 0 + * + * __read_seqcount_retry is like read_seqcount_retry, but has no smp_rmb() + * barrier. Callers should ensure that smp_rmb() or equivalent ordering is + * provided before actually loading any of the variables that are to be + * protected in this critical section. + * + * Use carefully, only in critical code, and comment how the barrier is + * provided. + */ +static inline int __read_seqcount_retry(const seqcount_t *s, unsigned start) +{ + return unlikely(s->sequence != start); +} + +/** + * read_seqcount_retry - end a seq-read critical section + * @s: pointer to seqcount_t + * @start: count, from read_seqcount_begin + * Returns: 1 if retry is required, else 0 + * + * read_seqcount_retry closes a read critical section of the given seqcount. + * If the critical section was invalid, it must be ignored (and typically + * retried). */ static inline int read_seqcount_retry(const seqcount_t *s, unsigned start) { smp_rmb(); - return s->sequence != start; + return __read_seqcount_retry(s, start); } @@ -167,6 +220,19 @@ static inline void write_seqcount_end(seqcount_t *s) s->sequence++; } +/** + * write_seqcount_barrier - invalidate in-progress read-side seq operations + * @s: pointer to seqcount_t + * + * After write_seqcount_barrier, no read-side seq operations will complete + * successfully and see data older than this. + */ +static inline void write_seqcount_barrier(seqcount_t *s) +{ + smp_wmb(); + s->sequence+=2; +} + /* * Possible sw/hw IRQ protected versions of the interfaces. */ -- cgit v1.2.3 From 31e6b01f4183ff419a6d1f86177cbf4662347cec Mon Sep 17 00:00:00 2001 From: Nick Piggin Date: Fri, 7 Jan 2011 17:49:52 +1100 Subject: fs: rcu-walk for path lookup Perform common cases of path lookups without any stores or locking in the ancestor dentry elements. This is called rcu-walk, as opposed to the current algorithm which is a refcount based walk, or ref-walk. This results in far fewer atomic operations on every path element, significantly improving path lookup performance. It also avoids cacheline bouncing on common dentries, significantly improving scalability. The overall design is like this: * LOOKUP_RCU is set in nd->flags, which distinguishes rcu-walk from ref-walk. * Take the RCU lock for the entire path walk, starting with the acquiring of the starting path (eg. root/cwd/fd-path). So now dentry refcounts are not required for dentry persistence. * synchronize_rcu is called when unregistering a filesystem, so we can access d_ops and i_ops during rcu-walk. * Similarly take the vfsmount lock for the entire path walk. So now mnt refcounts are not required for persistence. Also we are free to perform mount lookups, and to assume dentry mount points and mount roots are stable up and down the path. * Have a per-dentry seqlock to protect the dentry name, parent, and inode, so we can load this tuple atomically, and also check whether any of its members have changed. * Dentry lookups (based on parent, candidate string tuple) recheck the parent sequence after the child is found in case anything changed in the parent during the path walk. * inode is also RCU protected so we can load d_inode and use the inode for limited things. * i_mode, i_uid, i_gid can be tested for exec permissions during path walk. * i_op can be loaded. When we reach the destination dentry, we lock it, recheck lookup sequence, and increment its refcount and mountpoint refcount. RCU and vfsmount locks are dropped. This is termed "dropping rcu-walk". If the dentry refcount does not match, we can not drop rcu-walk gracefully at the current point in the lokup, so instead return -ECHILD (for want of a better errno). This signals the path walking code to re-do the entire lookup with a ref-walk. Aside from the final dentry, there are other situations that may be encounted where we cannot continue rcu-walk. In that case, we drop rcu-walk (ie. take a reference on the last good dentry) and continue with a ref-walk. Again, if we can drop rcu-walk gracefully, we return -ECHILD and do the whole lookup using ref-walk. But it is very important that we can continue with ref-walk for most cases, particularly to avoid the overhead of double lookups, and to gain the scalability advantages on common path elements (like cwd and root). The cases where rcu-walk cannot continue are: * NULL dentry (ie. any uncached path element) * parent with d_inode->i_op->permission or ACLs * dentries with d_revalidate * Following links In future patches, permission checks and d_revalidate become rcu-walk aware. It may be possible eventually to make following links rcu-walk aware. Uncached path elements will always require dropping to ref-walk mode, at the very least because i_mutex needs to be grabbed, and objects allocated. Signed-off-by: Nick Piggin --- include/linux/dcache.h | 32 +++++++++++++++++++++++++++++--- include/linux/namei.h | 15 ++++++++++----- include/linux/security.h | 8 +++++++- 3 files changed, 46 insertions(+), 9 deletions(-) (limited to 'include/linux') diff --git a/include/linux/dcache.h b/include/linux/dcache.h index ca648685f0cc..c2e7390289cc 100644 --- a/include/linux/dcache.h +++ b/include/linux/dcache.h @@ -5,6 +5,7 @@ #include #include #include +#include #include #include @@ -90,6 +91,7 @@ struct dentry { unsigned int d_count; /* protected by d_lock */ unsigned int d_flags; /* protected by d_lock */ spinlock_t d_lock; /* per dentry lock */ + seqcount_t d_seq; /* per dentry seqlock */ int d_mounted; struct inode *d_inode; /* Where the name belongs to - NULL is * negative */ @@ -266,9 +268,33 @@ extern void d_move(struct dentry *, struct dentry *); extern struct dentry *d_ancestor(struct dentry *, struct dentry *); /* appendix may either be NULL or be used for transname suffixes */ -extern struct dentry * d_lookup(struct dentry *, struct qstr *); -extern struct dentry * __d_lookup(struct dentry *, struct qstr *); -extern struct dentry * d_hash_and_lookup(struct dentry *, struct qstr *); +extern struct dentry *d_lookup(struct dentry *, struct qstr *); +extern struct dentry *d_hash_and_lookup(struct dentry *, struct qstr *); +extern struct dentry *__d_lookup(struct dentry *, struct qstr *); +extern struct dentry *__d_lookup_rcu(struct dentry *parent, struct qstr *name, + unsigned *seq, struct inode **inode); + +/** + * __d_rcu_to_refcount - take a refcount on dentry if sequence check is ok + * @dentry: dentry to take a ref on + * @seq: seqcount to verify against + * @Returns: 0 on failure, else 1. + * + * __d_rcu_to_refcount operates on a dentry,seq pair that was returned + * by __d_lookup_rcu, to get a reference on an rcu-walk dentry. + */ +static inline int __d_rcu_to_refcount(struct dentry *dentry, unsigned seq) +{ + int ret = 0; + + assert_spin_locked(&dentry->d_lock); + if (!read_seqcount_retry(&dentry->d_seq, seq)) { + ret = 1; + dentry->d_count++; + } + + return ret; +} /* validate "insecure" dentry pointer */ extern int d_validate(struct dentry *, struct dentry *); diff --git a/include/linux/namei.h b/include/linux/namei.h index aec730b53935..18d06add0a40 100644 --- a/include/linux/namei.h +++ b/include/linux/namei.h @@ -19,7 +19,10 @@ struct nameidata { struct path path; struct qstr last; struct path root; + struct file *file; + struct inode *inode; /* path.dentry.d_inode */ unsigned int flags; + unsigned seq; int last_type; unsigned depth; char *saved_names[MAX_NESTED_LINKS + 1]; @@ -43,11 +46,13 @@ enum {LAST_NORM, LAST_ROOT, LAST_DOT, LAST_DOTDOT, LAST_BIND}; * - internal "there are more path components" flag * - dentry cache is untrusted; force a real lookup */ -#define LOOKUP_FOLLOW 1 -#define LOOKUP_DIRECTORY 2 -#define LOOKUP_CONTINUE 4 -#define LOOKUP_PARENT 16 -#define LOOKUP_REVAL 64 +#define LOOKUP_FOLLOW 0x0001 +#define LOOKUP_DIRECTORY 0x0002 +#define LOOKUP_CONTINUE 0x0004 + +#define LOOKUP_PARENT 0x0010 +#define LOOKUP_REVAL 0x0020 +#define LOOKUP_RCU 0x0040 /* * Intent data */ diff --git a/include/linux/security.h b/include/linux/security.h index fd4d55fb8845..ed95401970c7 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -457,7 +457,6 @@ static inline void security_free_mnt_opts(struct security_mnt_opts *opts) * called when the actual read/write operations are performed. * @inode contains the inode structure to check. * @mask contains the permission mask. - * @nd contains the nameidata (may be NULL). * Return 0 if permission is granted. * @inode_setattr: * Check permission before setting file attributes. Note that the kernel @@ -1713,6 +1712,7 @@ int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, int security_inode_readlink(struct dentry *dentry); int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd); int security_inode_permission(struct inode *inode, int mask); +int security_inode_exec_permission(struct inode *inode, unsigned int flags); int security_inode_setattr(struct dentry *dentry, struct iattr *attr); int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry); int security_inode_setxattr(struct dentry *dentry, const char *name, @@ -2102,6 +2102,12 @@ static inline int security_inode_permission(struct inode *inode, int mask) return 0; } +static inline int security_inode_exec_permission(struct inode *inode, + unsigned int flags) +{ + return 0; +} + static inline int security_inode_setattr(struct dentry *dentry, struct iattr *attr) { -- cgit v1.2.3 From c28cc36469554dc55540f059fbdc7fa22a2c31fc Mon Sep 17 00:00:00 2001 From: Nick Piggin Date: Fri, 7 Jan 2011 17:49:53 +1100 Subject: fs: fs_struct use seqlock Use a seqlock in the fs_struct to enable us to take an atomic copy of the complete cwd and root paths. Use this in the RCU lookup path to avoid a thread-shared spinlock in RCU lookup operations. Multi-threaded apps may now perform path lookups with scalability matching multi-process apps. Operations such as stat(2) become very scalable for multi-threaded workload. Signed-off-by: Nick Piggin --- include/linux/fs_struct.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/fs_struct.h b/include/linux/fs_struct.h index a42b5bf02f8b..003dc0fd7347 100644 --- a/include/linux/fs_struct.h +++ b/include/linux/fs_struct.h @@ -2,10 +2,13 @@ #define _LINUX_FS_STRUCT_H #include +#include +#include struct fs_struct { int users; spinlock_t lock; + seqcount_t seq; int umask; int in_exec; struct path root, pwd; -- cgit v1.2.3 From 5f57cbcc02cf18f6b22ef4066bb10afeb8f930ff Mon Sep 17 00:00:00 2001 From: Nick Piggin Date: Fri, 7 Jan 2011 17:49:54 +1100 Subject: fs: dcache remove d_mounted Rather than keep a d_mounted count in the dentry, set a dentry flag instead. The flag can be cleared by checking the hash table to see if there are any mounts left, which is not time critical because it is performed at detach time. The mounted state of a dentry is only used to speculatively take a look in the mount hash table if it is set -- before following the mount, vfsmount lock is taken and mount re-checked without races. This saves 4 bytes on 32-bit, nothing on 64-bit but it does provide a hole I might use later (and some configs have larger than 32-bit spinlocks which might make use of the hole). Autofs4 conversion and changelog by Ian Kent : In autofs4, when expring direct (or offset) mounts we need to ensure that we block user path walks into the autofs mount, which is covered by another mount. To do this we clear the mounted status so that follows stop before walking into the mount and are essentially blocked until the expire is completed. The automount daemon still finds the correct dentry for the umount due to the follow mount logic in fs/autofs4/root.c:autofs4_follow_link(), which is set as an inode operation for direct and offset mounts only and is called following the lookup that stopped at the covered mount. At the end of the expire the covering mount probably has gone away so the mounted status need not be restored. But we need to check this and only restore the mounted status if the expire failed. XXX: autofs may not work right if we have other mounts go over the top of it? Signed-off-by: Nick Piggin --- include/linux/dcache.h | 42 +++++++++++++++++++++--------------------- 1 file changed, 21 insertions(+), 21 deletions(-) (limited to 'include/linux') diff --git a/include/linux/dcache.h b/include/linux/dcache.h index c2e7390289cc..e4414693065e 100644 --- a/include/linux/dcache.h +++ b/include/linux/dcache.h @@ -92,7 +92,6 @@ struct dentry { unsigned int d_flags; /* protected by d_lock */ spinlock_t d_lock; /* per dentry lock */ seqcount_t d_seq; /* per dentry seqlock */ - int d_mounted; struct inode *d_inode; /* Where the name belongs to - NULL is * negative */ /* @@ -156,33 +155,34 @@ struct dentry_operations { /* d_flags entries */ #define DCACHE_AUTOFS_PENDING 0x0001 /* autofs: "under construction" */ -#define DCACHE_NFSFS_RENAMED 0x0002 /* this dentry has been "silly - * renamed" and has to be - * deleted on the last dput() - */ -#define DCACHE_DISCONNECTED 0x0004 - /* This dentry is possibly not currently connected to the dcache tree, - * in which case its parent will either be itself, or will have this - * flag as well. nfsd will not use a dentry with this bit set, but will - * first endeavour to clear the bit either by discovering that it is - * connected, or by performing lookup operations. Any filesystem which - * supports nfsd_operations MUST have a lookup function which, if it finds - * a directory inode with a DCACHE_DISCONNECTED dentry, will d_move - * that dentry into place and return that dentry rather than the passed one, - * typically using d_splice_alias. - */ +#define DCACHE_NFSFS_RENAMED 0x0002 + /* this dentry has been "silly renamed" and has to be deleted on the last + * dput() */ + +#define DCACHE_DISCONNECTED 0x0004 + /* This dentry is possibly not currently connected to the dcache tree, in + * which case its parent will either be itself, or will have this flag as + * well. nfsd will not use a dentry with this bit set, but will first + * endeavour to clear the bit either by discovering that it is connected, + * or by performing lookup operations. Any filesystem which supports + * nfsd_operations MUST have a lookup function which, if it finds a + * directory inode with a DCACHE_DISCONNECTED dentry, will d_move that + * dentry into place and return that dentry rather than the passed one, + * typically using d_splice_alias. */ #define DCACHE_REFERENCED 0x0008 /* Recently used, don't discard. */ #define DCACHE_UNHASHED 0x0010 - -#define DCACHE_INOTIFY_PARENT_WATCHED 0x0020 /* Parent inode is watched by inotify */ +#define DCACHE_INOTIFY_PARENT_WATCHED 0x0020 + /* Parent inode is watched by inotify */ #define DCACHE_COOKIE 0x0040 /* For use by dcookie subsystem */ - -#define DCACHE_FSNOTIFY_PARENT_WATCHED 0x0080 /* Parent inode is watched by some fsnotify listener */ +#define DCACHE_FSNOTIFY_PARENT_WATCHED 0x0080 + /* Parent inode is watched by some fsnotify listener */ #define DCACHE_CANT_MOUNT 0x0100 #define DCACHE_GENOCIDE 0x0200 +#define DCACHE_MOUNTED 0x0400 /* is a mountpoint */ + extern spinlock_t dcache_inode_lock; extern seqlock_t rename_lock; @@ -372,7 +372,7 @@ extern void dput(struct dentry *); static inline int d_mountpoint(struct dentry *dentry) { - return dentry->d_mounted; + return dentry->d_flags & DCACHE_MOUNTED; } extern struct vfsmount *lookup_mnt(struct path *); -- cgit v1.2.3 From fb045adb99d9b7c562dc7fef834857f78249daa1 Mon Sep 17 00:00:00 2001 From: Nick Piggin Date: Fri, 7 Jan 2011 17:49:55 +1100 Subject: fs: dcache reduce branches in lookup path Reduce some branches and memory accesses in dcache lookup by adding dentry flags to indicate common d_ops are set, rather than having to check them. This saves a pointer memory access (dentry->d_op) in common path lookup situations, and saves another pointer load and branch in cases where we have d_op but not the particular operation. Patched with: git grep -E '[.>]([[:space:]])*d_op([[:space:]])*=' | xargs sed -e 's/\([^\t ]*\)->d_op = \(.*\);/d_set_d_op(\1, \2);/' -e 's/\([^\t ]*\)\.d_op = \(.*\);/d_set_d_op(\&\1, \2);/' -i Signed-off-by: Nick Piggin --- include/linux/dcache.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/dcache.h b/include/linux/dcache.h index e4414693065e..f4b40a751f09 100644 --- a/include/linux/dcache.h +++ b/include/linux/dcache.h @@ -183,6 +183,11 @@ struct dentry_operations { #define DCACHE_GENOCIDE 0x0200 #define DCACHE_MOUNTED 0x0400 /* is a mountpoint */ +#define DCACHE_OP_HASH 0x1000 +#define DCACHE_OP_COMPARE 0x2000 +#define DCACHE_OP_REVALIDATE 0x4000 +#define DCACHE_OP_DELETE 0x8000 + extern spinlock_t dcache_inode_lock; extern seqlock_t rename_lock; @@ -201,6 +206,7 @@ extern struct dentry * d_materialise_unique(struct dentry *, struct inode *); extern void __d_drop(struct dentry *dentry); extern void d_drop(struct dentry *dentry); extern void d_delete(struct dentry *); +extern void d_set_d_op(struct dentry *dentry, const struct dentry_operations *op); /* allocate/de-allocate */ extern struct dentry * d_alloc(struct dentry *, const struct qstr *); -- cgit v1.2.3 From 44a7d7a878c9cbb74f236ea755b25b6b2e26a9a9 Mon Sep 17 00:00:00 2001 From: Nick Piggin Date: Fri, 7 Jan 2011 17:49:56 +1100 Subject: fs: cache optimise dentry and inode for rcu-walk Put dentry and inode fields into top of data structure. This allows RCU path traversal to perform an RCU dentry lookup in a path walk by touching only the first 56 bytes of the dentry. We also fit in 8 bytes of inline name in the first 64 bytes, so for short names, only 64 bytes needs to be touched to perform the lookup. We should get rid of the hash->prev pointer from the first 64 bytes, and fit 16 bytes of name in there, which will take care of 81% rather than 32% of the kernel tree. inode is also rearranged so that RCU lookup will only touch a single cacheline in the inode, plus one in the i_ops structure. This is important for directory component lookups in RCU path walking. In the kernel source, directory names average is around 6 chars, so this works. When we reach the last element of the lookup, we need to lock it and take its refcount which requires another cacheline access. Align dentry and inode operations structs, so members will be at predictable offsets and we can group common operations into head of structure. Signed-off-by: Nick Piggin --- include/linux/dcache.h | 36 +++++++++++++++++++----------------- include/linux/fs.h | 42 +++++++++++++++++++++++------------------- 2 files changed, 42 insertions(+), 36 deletions(-) (limited to 'include/linux') diff --git a/include/linux/dcache.h b/include/linux/dcache.h index f4b40a751f09..b1aeda077258 100644 --- a/include/linux/dcache.h +++ b/include/linux/dcache.h @@ -82,25 +82,33 @@ full_name_hash(const unsigned char *name, unsigned int len) * large memory footprint increase). */ #ifdef CONFIG_64BIT -#define DNAME_INLINE_LEN_MIN 32 /* 192 bytes */ +# define DNAME_INLINE_LEN 32 /* 192 bytes */ #else -#define DNAME_INLINE_LEN_MIN 40 /* 128 bytes */ +# ifdef CONFIG_SMP +# define DNAME_INLINE_LEN 36 /* 128 bytes */ +# else +# define DNAME_INLINE_LEN 40 /* 128 bytes */ +# endif #endif struct dentry { - unsigned int d_count; /* protected by d_lock */ + /* RCU lookup touched fields */ unsigned int d_flags; /* protected by d_lock */ - spinlock_t d_lock; /* per dentry lock */ seqcount_t d_seq; /* per dentry seqlock */ - struct inode *d_inode; /* Where the name belongs to - NULL is - * negative */ - /* - * The next three fields are touched by __d_lookup. Place them here - * so they all fit in a cache line. - */ struct hlist_node d_hash; /* lookup hash list */ struct dentry *d_parent; /* parent directory */ struct qstr d_name; + struct inode *d_inode; /* Where the name belongs to - NULL is + * negative */ + unsigned char d_iname[DNAME_INLINE_LEN]; /* small names */ + + /* Ref lookup also touches following */ + unsigned int d_count; /* protected by d_lock */ + spinlock_t d_lock; /* per dentry lock */ + const struct dentry_operations *d_op; + struct super_block *d_sb; /* The root of the dentry tree */ + unsigned long d_time; /* used by d_revalidate */ + void *d_fsdata; /* fs-specific data */ struct list_head d_lru; /* LRU list */ /* @@ -112,12 +120,6 @@ struct dentry { } d_u; struct list_head d_subdirs; /* our children */ struct list_head d_alias; /* inode alias list */ - unsigned long d_time; /* used by d_revalidate */ - const struct dentry_operations *d_op; - struct super_block *d_sb; /* The root of the dentry tree */ - void *d_fsdata; /* fs-specific data */ - - unsigned char d_iname[DNAME_INLINE_LEN_MIN]; /* small names */ }; /* @@ -143,7 +145,7 @@ struct dentry_operations { void (*d_release)(struct dentry *); void (*d_iput)(struct dentry *, struct inode *); char *(*d_dname)(struct dentry *, char *, int); -}; +} ____cacheline_aligned; /* * Locking rules for dentry_operations callbacks are to be found in diff --git a/include/linux/fs.h b/include/linux/fs.h index ea202fff44f8..a04aa96acb71 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -733,6 +733,20 @@ struct posix_acl; #define ACL_NOT_CACHED ((void *)(-1)) struct inode { + /* RCU path lookup touches following: */ + umode_t i_mode; + uid_t i_uid; + gid_t i_gid; + const struct inode_operations *i_op; + struct super_block *i_sb; + + spinlock_t i_lock; /* i_blocks, i_bytes, maybe i_size */ + unsigned int i_flags; + struct mutex i_mutex; + + unsigned long i_state; + unsigned long dirtied_when; /* jiffies of first dirtying */ + struct hlist_node i_hash; struct list_head i_wb_list; /* backing dev IO list */ struct list_head i_lru; /* inode LRU list */ @@ -744,8 +758,6 @@ struct inode { unsigned long i_ino; atomic_t i_count; unsigned int i_nlink; - uid_t i_uid; - gid_t i_gid; dev_t i_rdev; unsigned int i_blkbits; u64 i_version; @@ -758,13 +770,8 @@ struct inode { struct timespec i_ctime; blkcnt_t i_blocks; unsigned short i_bytes; - umode_t i_mode; - spinlock_t i_lock; /* i_blocks, i_bytes, maybe i_size */ - struct mutex i_mutex; struct rw_semaphore i_alloc_sem; - const struct inode_operations *i_op; const struct file_operations *i_fop; /* former ->i_op->default_file_ops */ - struct super_block *i_sb; struct file_lock *i_flock; struct address_space *i_mapping; struct address_space i_data; @@ -785,11 +792,6 @@ struct inode { struct hlist_head i_fsnotify_marks; #endif - unsigned long i_state; - unsigned long dirtied_when; /* jiffies of first dirtying */ - - unsigned int i_flags; - #ifdef CONFIG_IMA /* protected by i_lock */ unsigned int i_readcount; /* struct files open RO */ @@ -1549,8 +1551,15 @@ struct file_operations { }; struct inode_operations { - int (*create) (struct inode *,struct dentry *,int, struct nameidata *); struct dentry * (*lookup) (struct inode *,struct dentry *, struct nameidata *); + void * (*follow_link) (struct dentry *, struct nameidata *); + int (*permission) (struct inode *, int); + int (*check_acl)(struct inode *, int); + + int (*readlink) (struct dentry *, char __user *,int); + void (*put_link) (struct dentry *, struct nameidata *, void *); + + int (*create) (struct inode *,struct dentry *,int, struct nameidata *); int (*link) (struct dentry *,struct inode *,struct dentry *); int (*unlink) (struct inode *,struct dentry *); int (*symlink) (struct inode *,struct dentry *,const char *); @@ -1559,12 +1568,7 @@ struct inode_operations { int (*mknod) (struct inode *,struct dentry *,int,dev_t); int (*rename) (struct inode *, struct dentry *, struct inode *, struct dentry *); - int (*readlink) (struct dentry *, char __user *,int); - void * (*follow_link) (struct dentry *, struct nameidata *); - void (*put_link) (struct dentry *, struct nameidata *, void *); void (*truncate) (struct inode *); - int (*permission) (struct inode *, int); - int (*check_acl)(struct inode *, int); int (*setattr) (struct dentry *, struct iattr *); int (*getattr) (struct vfsmount *mnt, struct dentry *, struct kstat *); int (*setxattr) (struct dentry *, const char *,const void *,size_t,int); @@ -1576,7 +1580,7 @@ struct inode_operations { loff_t len); int (*fiemap)(struct inode *, struct fiemap_extent_info *, u64 start, u64 len); -}; +} ____cacheline_aligned; struct seq_file; -- cgit v1.2.3 From 34286d6662308d82aed891852d04c7c3a2649b16 Mon Sep 17 00:00:00 2001 From: Nick Piggin Date: Fri, 7 Jan 2011 17:49:57 +1100 Subject: fs: rcu-walk aware d_revalidate method Require filesystems be aware of .d_revalidate being called in rcu-walk mode (nd->flags & LOOKUP_RCU). For now do a simple push down, returning -ECHILD from all implementations. Signed-off-by: Nick Piggin --- include/linux/dcache.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/dcache.h b/include/linux/dcache.h index b1aeda077258..8b2064d02928 100644 --- a/include/linux/dcache.h +++ b/include/linux/dcache.h @@ -190,7 +190,6 @@ struct dentry_operations { #define DCACHE_OP_REVALIDATE 0x4000 #define DCACHE_OP_DELETE 0x8000 - extern spinlock_t dcache_inode_lock; extern seqlock_t rename_lock; -- cgit v1.2.3 From b74c79e99389cd79b31fcc08f82c24e492e63c7e Mon Sep 17 00:00:00 2001 From: Nick Piggin Date: Fri, 7 Jan 2011 17:49:58 +1100 Subject: fs: provide rcu-walk aware permission i_ops Signed-off-by: Nick Piggin --- include/linux/coda_linux.h | 2 +- include/linux/fs.h | 10 ++++++---- include/linux/generic_acl.h | 2 +- include/linux/nfs_fs.h | 2 +- include/linux/reiserfs_xattr.h | 2 +- 5 files changed, 10 insertions(+), 8 deletions(-) (limited to 'include/linux') diff --git a/include/linux/coda_linux.h b/include/linux/coda_linux.h index 2e914d0771b9..4ccc59c1ea82 100644 --- a/include/linux/coda_linux.h +++ b/include/linux/coda_linux.h @@ -37,7 +37,7 @@ extern const struct file_operations coda_ioctl_operations; /* operations shared over more than one file */ int coda_open(struct inode *i, struct file *f); int coda_release(struct inode *i, struct file *f); -int coda_permission(struct inode *inode, int mask); +int coda_permission(struct inode *inode, int mask, unsigned int flags); int coda_revalidate_inode(struct dentry *); int coda_getattr(struct vfsmount *, struct dentry *, struct kstat *); int coda_setattr(struct dentry *, struct iattr *); diff --git a/include/linux/fs.h b/include/linux/fs.h index a04aa96acb71..d5a4d42f655b 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1550,11 +1550,13 @@ struct file_operations { int (*setlease)(struct file *, long, struct file_lock **); }; +#define IPERM_FLAG_RCU 0x0001 + struct inode_operations { struct dentry * (*lookup) (struct inode *,struct dentry *, struct nameidata *); void * (*follow_link) (struct dentry *, struct nameidata *); - int (*permission) (struct inode *, int); - int (*check_acl)(struct inode *, int); + int (*permission) (struct inode *, int, unsigned int); + int (*check_acl)(struct inode *, int, unsigned int); int (*readlink) (struct dentry *, char __user *,int); void (*put_link) (struct dentry *, struct nameidata *, void *); @@ -2165,8 +2167,8 @@ extern sector_t bmap(struct inode *, sector_t); #endif extern int notify_change(struct dentry *, struct iattr *); extern int inode_permission(struct inode *, int); -extern int generic_permission(struct inode *, int, - int (*check_acl)(struct inode *, int)); +extern int generic_permission(struct inode *, int, unsigned int, + int (*check_acl)(struct inode *, int, unsigned int)); static inline bool execute_ok(struct inode *inode) { diff --git a/include/linux/generic_acl.h b/include/linux/generic_acl.h index 574bea4013b6..0437e377b555 100644 --- a/include/linux/generic_acl.h +++ b/include/linux/generic_acl.h @@ -10,6 +10,6 @@ extern const struct xattr_handler generic_acl_default_handler; int generic_acl_init(struct inode *, struct inode *); int generic_acl_chmod(struct inode *); -int generic_check_acl(struct inode *inode, int mask); +int generic_check_acl(struct inode *inode, int mask, unsigned int flags); #endif /* LINUX_GENERIC_ACL_H */ diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h index 29d504d5d1c3..0779bb8f95be 100644 --- a/include/linux/nfs_fs.h +++ b/include/linux/nfs_fs.h @@ -351,7 +351,7 @@ extern int nfs_refresh_inode(struct inode *, struct nfs_fattr *); extern int nfs_post_op_update_inode(struct inode *inode, struct nfs_fattr *fattr); extern int nfs_post_op_update_inode_force_wcc(struct inode *inode, struct nfs_fattr *fattr); extern int nfs_getattr(struct vfsmount *, struct dentry *, struct kstat *); -extern int nfs_permission(struct inode *, int); +extern int nfs_permission(struct inode *, int, unsigned int); extern int nfs_open(struct inode *, struct file *); extern int nfs_release(struct inode *, struct file *); extern int nfs_attribute_timeout(struct inode *inode); diff --git a/include/linux/reiserfs_xattr.h b/include/linux/reiserfs_xattr.h index b2cf2089769b..3b94c91f20a6 100644 --- a/include/linux/reiserfs_xattr.h +++ b/include/linux/reiserfs_xattr.h @@ -41,7 +41,7 @@ int reiserfs_xattr_init(struct super_block *sb, int mount_flags); int reiserfs_lookup_privroot(struct super_block *sb); int reiserfs_delete_xattrs(struct inode *inode); int reiserfs_chown_xattrs(struct inode *inode, struct iattr *attrs); -int reiserfs_permission(struct inode *inode, int mask); +int reiserfs_permission(struct inode *inode, int mask, unsigned int flags); #ifdef CONFIG_REISERFS_FS_XATTR #define has_xattr_dir(inode) (REISERFS_I(inode)->i_flags & i_has_xattr_dir) -- cgit v1.2.3 From 1e1743ebe35ec7e3c1fa732408358fbc614cbbe5 Mon Sep 17 00:00:00 2001 From: Nick Piggin Date: Fri, 7 Jan 2011 17:49:59 +1100 Subject: fs: provide simple rcu-walk generic_check_acl implementation This simple implementation just checks for no ACLs on the inode, and if so, then the rcu-walk may proceed, otherwise fail it. This could easily be extended to put acls under RCU and check them under seqlock, if need be. But this implementation is enough to show the rcu-walk aware permissions code for path lookups is working, and will handle cases where there are no ACLs or ACLs in just the final element. This patch implicity converts tmpfs to rcu-aware permission check. Subsequent patches onvert ext*, xfs, and, btrfs. Each of these uses acl/permission code in a different way, so convert them all to provide templates and proof of concept. Signed-off-by: Nick Piggin --- include/linux/posix_acl.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'include/linux') diff --git a/include/linux/posix_acl.h b/include/linux/posix_acl.h index 67608161df6b..d68283a898bb 100644 --- a/include/linux/posix_acl.h +++ b/include/linux/posix_acl.h @@ -108,6 +108,25 @@ static inline struct posix_acl *get_cached_acl(struct inode *inode, int type) return acl; } +static inline int negative_cached_acl(struct inode *inode, int type) +{ + struct posix_acl **p, *acl; + switch (type) { + case ACL_TYPE_ACCESS: + p = &inode->i_acl; + break; + case ACL_TYPE_DEFAULT: + p = &inode->i_default_acl; + break; + default: + BUG(); + } + acl = ACCESS_ONCE(*p); + if (acl) + return 0; + return 1; +} + static inline void set_cached_acl(struct inode *inode, int type, struct posix_acl *acl) -- cgit v1.2.3 From 4e35e6070b1ceed89c3bba2af4216c286fb1dafd Mon Sep 17 00:00:00 2001 From: Nick Piggin Date: Fri, 7 Jan 2011 17:50:03 +1100 Subject: kernel: add bl_list Introduce a type of hlist that can support the use of the lowest bit in the hlist_head. This will be subsequently used to implement per-bucket bit spinlock for inode and dentry hashes, and may be useful in other cases such as network hashes. Reviewed-by: Paul E. McKenney Signed-off-by: Nick Piggin --- include/linux/list_bl.h | 144 +++++++++++++++++++++++++++++++++++++++++++++ include/linux/rculist_bl.h | 127 +++++++++++++++++++++++++++++++++++++++ 2 files changed, 271 insertions(+) create mode 100644 include/linux/list_bl.h create mode 100644 include/linux/rculist_bl.h (limited to 'include/linux') diff --git a/include/linux/list_bl.h b/include/linux/list_bl.h new file mode 100644 index 000000000000..9ee97e7f2be4 --- /dev/null +++ b/include/linux/list_bl.h @@ -0,0 +1,144 @@ +#ifndef _LINUX_LIST_BL_H +#define _LINUX_LIST_BL_H + +#include + +/* + * Special version of lists, where head of the list has a lock in the lowest + * bit. This is useful for scalable hash tables without increasing memory + * footprint overhead. + * + * For modification operations, the 0 bit of hlist_bl_head->first + * pointer must be set. + * + * With some small modifications, this can easily be adapted to store several + * arbitrary bits (not just a single lock bit), if the need arises to store + * some fast and compact auxiliary data. + */ + +#if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK) +#define LIST_BL_LOCKMASK 1UL +#else +#define LIST_BL_LOCKMASK 0UL +#endif + +#ifdef CONFIG_DEBUG_LIST +#define LIST_BL_BUG_ON(x) BUG_ON(x) +#else +#define LIST_BL_BUG_ON(x) +#endif + + +struct hlist_bl_head { + struct hlist_bl_node *first; +}; + +struct hlist_bl_node { + struct hlist_bl_node *next, **pprev; +}; +#define INIT_HLIST_BL_HEAD(ptr) \ + ((ptr)->first = NULL) + +static inline void INIT_HLIST_BL_NODE(struct hlist_bl_node *h) +{ + h->next = NULL; + h->pprev = NULL; +} + +#define hlist_bl_entry(ptr, type, member) container_of(ptr,type,member) + +static inline int hlist_bl_unhashed(const struct hlist_bl_node *h) +{ + return !h->pprev; +} + +static inline struct hlist_bl_node *hlist_bl_first(struct hlist_bl_head *h) +{ + return (struct hlist_bl_node *) + ((unsigned long)h->first & ~LIST_BL_LOCKMASK); +} + +static inline void hlist_bl_set_first(struct hlist_bl_head *h, + struct hlist_bl_node *n) +{ + LIST_BL_BUG_ON((unsigned long)n & LIST_BL_LOCKMASK); + LIST_BL_BUG_ON(!((unsigned long)h->first & LIST_BL_LOCKMASK)); + h->first = (struct hlist_bl_node *)((unsigned long)n | LIST_BL_LOCKMASK); +} + +static inline int hlist_bl_empty(const struct hlist_bl_head *h) +{ + return !((unsigned long)h->first & ~LIST_BL_LOCKMASK); +} + +static inline void hlist_bl_add_head(struct hlist_bl_node *n, + struct hlist_bl_head *h) +{ + struct hlist_bl_node *first = hlist_bl_first(h); + + n->next = first; + if (first) + first->pprev = &n->next; + n->pprev = &h->first; + hlist_bl_set_first(h, n); +} + +static inline void __hlist_bl_del(struct hlist_bl_node *n) +{ + struct hlist_bl_node *next = n->next; + struct hlist_bl_node **pprev = n->pprev; + + LIST_BL_BUG_ON((unsigned long)n & LIST_BL_LOCKMASK); + + /* pprev may be `first`, so be careful not to lose the lock bit */ + *pprev = (struct hlist_bl_node *) + ((unsigned long)next | + ((unsigned long)*pprev & LIST_BL_LOCKMASK)); + if (next) + next->pprev = pprev; +} + +static inline void hlist_bl_del(struct hlist_bl_node *n) +{ + __hlist_bl_del(n); + n->next = LIST_POISON1; + n->pprev = LIST_POISON2; +} + +static inline void hlist_bl_del_init(struct hlist_bl_node *n) +{ + if (!hlist_bl_unhashed(n)) { + __hlist_bl_del(n); + INIT_HLIST_BL_NODE(n); + } +} + +/** + * hlist_bl_for_each_entry - iterate over list of given type + * @tpos: the type * to use as a loop cursor. + * @pos: the &struct hlist_node to use as a loop cursor. + * @head: the head for your list. + * @member: the name of the hlist_node within the struct. + * + */ +#define hlist_bl_for_each_entry(tpos, pos, head, member) \ + for (pos = hlist_bl_first(head); \ + pos && \ + ({ tpos = hlist_bl_entry(pos, typeof(*tpos), member); 1;}); \ + pos = pos->next) + +/** + * hlist_bl_for_each_entry_safe - iterate over list of given type safe against removal of list entry + * @tpos: the type * to use as a loop cursor. + * @pos: the &struct hlist_node to use as a loop cursor. + * @n: another &struct hlist_node to use as temporary storage + * @head: the head for your list. + * @member: the name of the hlist_node within the struct. + */ +#define hlist_bl_for_each_entry_safe(tpos, pos, n, head, member) \ + for (pos = hlist_bl_first(head); \ + pos && ({ n = pos->next; 1; }) && \ + ({ tpos = hlist_bl_entry(pos, typeof(*tpos), member); 1;}); \ + pos = n) + +#endif diff --git a/include/linux/rculist_bl.h b/include/linux/rculist_bl.h new file mode 100644 index 000000000000..b872b493724d --- /dev/null +++ b/include/linux/rculist_bl.h @@ -0,0 +1,127 @@ +#ifndef _LINUX_RCULIST_BL_H +#define _LINUX_RCULIST_BL_H + +/* + * RCU-protected bl list version. See include/linux/list_bl.h. + */ +#include +#include + +static inline void hlist_bl_set_first_rcu(struct hlist_bl_head *h, + struct hlist_bl_node *n) +{ + LIST_BL_BUG_ON((unsigned long)n & LIST_BL_LOCKMASK); + LIST_BL_BUG_ON(!((unsigned long)h->first & LIST_BL_LOCKMASK)); + rcu_assign_pointer(h->first, + (struct hlist_bl_node *)((unsigned long)n | LIST_BL_LOCKMASK)); +} + +static inline struct hlist_bl_node *hlist_bl_first_rcu(struct hlist_bl_head *h) +{ + return (struct hlist_bl_node *) + ((unsigned long)rcu_dereference(h->first) & ~LIST_BL_LOCKMASK); +} + +/** + * hlist_bl_del_init_rcu - deletes entry from hash list with re-initialization + * @n: the element to delete from the hash list. + * + * Note: hlist_bl_unhashed() on the node returns true after this. It is + * useful for RCU based read lockfree traversal if the writer side + * must know if the list entry is still hashed or already unhashed. + * + * In particular, it means that we can not poison the forward pointers + * that may still be used for walking the hash list and we can only + * zero the pprev pointer so list_unhashed() will return true after + * this. + * + * The caller must take whatever precautions are necessary (such as + * holding appropriate locks) to avoid racing with another + * list-mutation primitive, such as hlist_bl_add_head_rcu() or + * hlist_bl_del_rcu(), running on this same list. However, it is + * perfectly legal to run concurrently with the _rcu list-traversal + * primitives, such as hlist_bl_for_each_entry_rcu(). + */ +static inline void hlist_bl_del_init_rcu(struct hlist_bl_node *n) +{ + if (!hlist_bl_unhashed(n)) { + __hlist_bl_del(n); + n->pprev = NULL; + } +} + +/** + * hlist_bl_del_rcu - deletes entry from hash list without re-initialization + * @n: the element to delete from the hash list. + * + * Note: hlist_bl_unhashed() on entry does not return true after this, + * the entry is in an undefined state. It is useful for RCU based + * lockfree traversal. + * + * In particular, it means that we can not poison the forward + * pointers that may still be used for walking the hash list. + * + * The caller must take whatever precautions are necessary + * (such as holding appropriate locks) to avoid racing + * with another list-mutation primitive, such as hlist_bl_add_head_rcu() + * or hlist_bl_del_rcu(), running on this same list. + * However, it is perfectly legal to run concurrently with + * the _rcu list-traversal primitives, such as + * hlist_bl_for_each_entry(). + */ +static inline void hlist_bl_del_rcu(struct hlist_bl_node *n) +{ + __hlist_bl_del(n); + n->pprev = LIST_POISON2; +} + +/** + * hlist_bl_add_head_rcu + * @n: the element to add to the hash list. + * @h: the list to add to. + * + * Description: + * Adds the specified element to the specified hlist_bl, + * while permitting racing traversals. + * + * The caller must take whatever precautions are necessary + * (such as holding appropriate locks) to avoid racing + * with another list-mutation primitive, such as hlist_bl_add_head_rcu() + * or hlist_bl_del_rcu(), running on this same list. + * However, it is perfectly legal to run concurrently with + * the _rcu list-traversal primitives, such as + * hlist_bl_for_each_entry_rcu(), used to prevent memory-consistency + * problems on Alpha CPUs. Regardless of the type of CPU, the + * list-traversal primitive must be guarded by rcu_read_lock(). + */ +static inline void hlist_bl_add_head_rcu(struct hlist_bl_node *n, + struct hlist_bl_head *h) +{ + struct hlist_bl_node *first; + + /* don't need hlist_bl_first_rcu because we're under lock */ + first = hlist_bl_first(h); + + n->next = first; + if (first) + first->pprev = &n->next; + n->pprev = &h->first; + + /* need _rcu because we can have concurrent lock free readers */ + hlist_bl_set_first_rcu(h, n); +} +/** + * hlist_bl_for_each_entry_rcu - iterate over rcu list of given type + * @tpos: the type * to use as a loop cursor. + * @pos: the &struct hlist_bl_node to use as a loop cursor. + * @head: the head for your list. + * @member: the name of the hlist_bl_node within the struct. + * + */ +#define hlist_bl_for_each_entry_rcu(tpos, pos, head, member) \ + for (pos = hlist_bl_first_rcu(head); \ + pos && \ + ({ tpos = hlist_bl_entry(pos, typeof(*tpos), member); 1; }); \ + pos = rcu_dereference_raw(pos->next)) + +#endif -- cgit v1.2.3 From 626d607435617cc0f033522083e2bb195b81813c Mon Sep 17 00:00:00 2001 From: Nick Piggin Date: Fri, 7 Jan 2011 17:50:04 +1100 Subject: bit_spinlock: add required includes Signed-off-by: Nick Piggin --- include/linux/bit_spinlock.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/bit_spinlock.h b/include/linux/bit_spinlock.h index 7113a32a86ea..e612575a2596 100644 --- a/include/linux/bit_spinlock.h +++ b/include/linux/bit_spinlock.h @@ -1,6 +1,10 @@ #ifndef __LINUX_BIT_SPINLOCK_H #define __LINUX_BIT_SPINLOCK_H +#include +#include +#include + /* * bit-based spin_lock() * -- cgit v1.2.3 From ceb5bdc2d246f6d81cf61ed70f325308a11821d2 Mon Sep 17 00:00:00 2001 From: Nick Piggin Date: Fri, 7 Jan 2011 17:50:05 +1100 Subject: fs: dcache per-bucket dcache hash locking We can turn the dcache hash locking from a global dcache_hash_lock into per-bucket locking. Signed-off-by: Nick Piggin --- include/linux/dcache.h | 3 ++- include/linux/fs.h | 3 ++- 2 files changed, 4 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/dcache.h b/include/linux/dcache.h index 8b2064d02928..5f0392ef759b 100644 --- a/include/linux/dcache.h +++ b/include/linux/dcache.h @@ -4,6 +4,7 @@ #include #include #include +#include #include #include #include @@ -95,7 +96,7 @@ struct dentry { /* RCU lookup touched fields */ unsigned int d_flags; /* protected by d_lock */ seqcount_t d_seq; /* per dentry seqlock */ - struct hlist_node d_hash; /* lookup hash list */ + struct hlist_bl_node d_hash; /* lookup hash list */ struct dentry *d_parent; /* parent directory */ struct qstr d_name; struct inode *d_inode; /* Where the name belongs to - NULL is diff --git a/include/linux/fs.h b/include/linux/fs.h index d5a4d42f655b..baf3e556ff0e 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -392,6 +392,7 @@ struct inodes_stat_t { #include #include #include +#include #include #include @@ -1377,7 +1378,7 @@ struct super_block { const struct xattr_handler **s_xattr; struct list_head s_inodes; /* all inodes */ - struct hlist_head s_anon; /* anonymous dentries for (nfs) exporting */ + struct hlist_bl_head s_anon; /* anonymous dentries for (nfs) exporting */ #ifdef CONFIG_SMP struct list_head __percpu *s_files; #else -- cgit v1.2.3 From 873feea09ebc980cbd3631b767356ce1eee65ec1 Mon Sep 17 00:00:00 2001 From: Nick Piggin Date: Fri, 7 Jan 2011 17:50:06 +1100 Subject: fs: dcache per-inode inode alias locking dcache_inode_lock can be replaced with per-inode locking. Use existing inode->i_lock for this. This is slightly non-trivial because we sometimes need to find the inode from the dentry, which requires d_inode to be stabilised (either with refcount or d_lock). Signed-off-by: Nick Piggin --- include/linux/dcache.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/dcache.h b/include/linux/dcache.h index 5f0392ef759b..d719e4de8046 100644 --- a/include/linux/dcache.h +++ b/include/linux/dcache.h @@ -191,7 +191,6 @@ struct dentry_operations { #define DCACHE_OP_REVALIDATE 0x4000 #define DCACHE_OP_DELETE 0x8000 -extern spinlock_t dcache_inode_lock; extern seqlock_t rename_lock; static inline int dname_external(struct dentry *dentry) -- cgit v1.2.3 From 4b936885ab04dc6e0bb0ef35e0e23c1a7364d9e5 Mon Sep 17 00:00:00 2001 From: Nick Piggin Date: Fri, 7 Jan 2011 17:50:07 +1100 Subject: fs: improve scalability of pseudo filesystems Regardless of how much we possibly try to scale dcache, there is likely always going to be some fundamental contention when adding or removing children under the same parent. Pseudo filesystems do not seem need to have connected dentries because by definition they are disconnected. Signed-off-by: Nick Piggin --- include/linux/dcache.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/dcache.h b/include/linux/dcache.h index d719e4de8046..c0a2ca97c72f 100644 --- a/include/linux/dcache.h +++ b/include/linux/dcache.h @@ -211,6 +211,7 @@ extern void d_set_d_op(struct dentry *dentry, const struct dentry_operations *op /* allocate/de-allocate */ extern struct dentry * d_alloc(struct dentry *, const struct qstr *); +extern struct dentry * d_alloc_pseudo(struct super_block *, const struct qstr *); extern struct dentry * d_splice_alias(struct inode *, struct dentry *); extern struct dentry * d_add_ci(struct dentry *, struct inode *, struct qstr *); extern struct dentry * d_obtain_alias(struct inode *); -- cgit v1.2.3 From 9d55c369bb5e695e629bc35cba2ef607755b3bee Mon Sep 17 00:00:00 2001 From: Nick Piggin Date: Fri, 7 Jan 2011 17:50:09 +1100 Subject: fs: implement faster dentry memcmp The standard memcmp function on a Westmere system shows up hot in profiles in the `git diff` workload (both parallel and single threaded), and it is likely due to the costs associated with trapping into microcode, and little opportunity to improve memory access (dentry name is not likely to take up more than a cacheline). So replace it with an open-coded byte comparison. This increases code size by 8 bytes in the critical __d_lookup_rcu function, but the speedup is huge, averaging 10 runs of each: git diff st user sys elapsed CPU before 1.15 2.57 3.82 97.1 after 1.14 2.35 3.61 96.8 git diff mt user sys elapsed CPU before 1.27 3.85 1.46 349 after 1.26 3.54 1.43 333 Elapsed time for single threaded git diff at 95.0% confidence: -0.21 +/- 0.01 -5.45% +/- 0.24% It's -0.66% +/- 0.06% elapsed time on my Opteron, so rep cmp costs on the fam10h seem to be relatively smaller, but there is still a win. Signed-off-by: Nick Piggin --- include/linux/dcache.h | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) (limited to 'include/linux') diff --git a/include/linux/dcache.h b/include/linux/dcache.h index c0a2ca97c72f..bd07758943e0 100644 --- a/include/linux/dcache.h +++ b/include/linux/dcache.h @@ -47,6 +47,27 @@ struct dentry_stat_t { }; extern struct dentry_stat_t dentry_stat; +/* + * Compare 2 name strings, return 0 if they match, otherwise non-zero. + * The strings are both count bytes long, and count is non-zero. + */ +static inline int dentry_cmp(const unsigned char *cs, size_t scount, + const unsigned char *ct, size_t tcount) +{ + int ret; + if (scount != tcount) + return 1; + do { + ret = (*cs != *ct); + if (ret) + break; + cs++; + ct++; + tcount--; + } while (tcount); + return ret; +} + /* Name hashing routines. Initial hash value */ /* Hash courtesy of the R5 hash in reiserfs modulo sign bits */ #define init_name_hash() 0 -- cgit v1.2.3 From b3e19d924b6eaf2ca7d22cba99a517c5171007b6 Mon Sep 17 00:00:00 2001 From: Nick Piggin Date: Fri, 7 Jan 2011 17:50:11 +1100 Subject: fs: scale mntget/mntput The problem that this patch aims to fix is vfsmount refcounting scalability. We need to take a reference on the vfsmount for every successful path lookup, which often go to the same mount point. The fundamental difficulty is that a "simple" reference count can never be made scalable, because any time a reference is dropped, we must check whether that was the last reference. To do that requires communication with all other CPUs that may have taken a reference count. We can make refcounts more scalable in a couple of ways, involving keeping distributed counters, and checking for the global-zero condition less frequently. - check the global sum once every interval (this will delay zero detection for some interval, so it's probably a showstopper for vfsmounts). - keep a local count and only taking the global sum when local reaches 0 (this is difficult for vfsmounts, because we can't hold preempt off for the life of a reference, so a counter would need to be per-thread or tied strongly to a particular CPU which requires more locking). - keep a local difference of increments and decrements, which allows us to sum the total difference and hence find the refcount when summing all CPUs. Then, keep a single integer "long" refcount for slow and long lasting references, and only take the global sum of local counters when the long refcount is 0. This last scheme is what I implemented here. Attached mounts and process root and working directory references are "long" references, and everything else is a short reference. This allows scalable vfsmount references during path walking over mounted subtrees and unattached (lazy umounted) mounts with processes still running in them. This results in one fewer atomic op in the fastpath: mntget is now just a per-CPU inc, rather than an atomic inc; and mntput just requires a spinlock and non-atomic decrement in the common case. However code is otherwise bigger and heavier, so single threaded performance is basically a wash. Signed-off-by: Nick Piggin --- include/linux/mount.h | 53 +++++++++++++++++---------------------------------- include/linux/path.h | 2 ++ 2 files changed, 19 insertions(+), 36 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mount.h b/include/linux/mount.h index 5e7a59408dd4..1869ea24a739 100644 --- a/include/linux/mount.h +++ b/include/linux/mount.h @@ -13,6 +13,7 @@ #include #include #include +#include #include struct super_block; @@ -46,12 +47,24 @@ struct mnt_namespace; #define MNT_INTERNAL 0x4000 +struct mnt_pcp { + int mnt_count; + int mnt_writers; +}; + struct vfsmount { struct list_head mnt_hash; struct vfsmount *mnt_parent; /* fs we are mounted on */ struct dentry *mnt_mountpoint; /* dentry of mountpoint */ struct dentry *mnt_root; /* root of the mounted tree */ struct super_block *mnt_sb; /* pointer to superblock */ +#ifdef CONFIG_SMP + struct mnt_pcp __percpu *mnt_pcp; + atomic_t mnt_longrefs; +#else + int mnt_count; + int mnt_writers; +#endif struct list_head mnt_mounts; /* list of children, anchored here */ struct list_head mnt_child; /* and going through their mnt_child */ int mnt_flags; @@ -70,57 +83,25 @@ struct vfsmount { struct mnt_namespace *mnt_ns; /* containing namespace */ int mnt_id; /* mount identifier */ int mnt_group_id; /* peer group identifier */ - /* - * We put mnt_count & mnt_expiry_mark at the end of struct vfsmount - * to let these frequently modified fields in a separate cache line - * (so that reads of mnt_flags wont ping-pong on SMP machines) - */ - atomic_t mnt_count; int mnt_expiry_mark; /* true if marked for expiry */ int mnt_pinned; int mnt_ghosts; -#ifdef CONFIG_SMP - int __percpu *mnt_writers; -#else - int mnt_writers; -#endif }; -static inline int *get_mnt_writers_ptr(struct vfsmount *mnt) -{ -#ifdef CONFIG_SMP - return mnt->mnt_writers; -#else - return &mnt->mnt_writers; -#endif -} - -static inline struct vfsmount *mntget(struct vfsmount *mnt) -{ - if (mnt) - atomic_inc(&mnt->mnt_count); - return mnt; -} - struct file; /* forward dec */ extern int mnt_want_write(struct vfsmount *mnt); extern int mnt_want_write_file(struct file *file); extern int mnt_clone_write(struct vfsmount *mnt); extern void mnt_drop_write(struct vfsmount *mnt); -extern void mntput_no_expire(struct vfsmount *mnt); +extern void mntput(struct vfsmount *mnt); +extern struct vfsmount *mntget(struct vfsmount *mnt); +extern void mntput_long(struct vfsmount *mnt); +extern struct vfsmount *mntget_long(struct vfsmount *mnt); extern void mnt_pin(struct vfsmount *mnt); extern void mnt_unpin(struct vfsmount *mnt); extern int __mnt_is_readonly(struct vfsmount *mnt); -static inline void mntput(struct vfsmount *mnt) -{ - if (mnt) { - mnt->mnt_expiry_mark = 0; - mntput_no_expire(mnt); - } -} - extern struct vfsmount *do_kern_mount(const char *fstype, int flags, const char *name, void *data); diff --git a/include/linux/path.h b/include/linux/path.h index edc98dec6266..a581e8c06533 100644 --- a/include/linux/path.h +++ b/include/linux/path.h @@ -10,7 +10,9 @@ struct path { }; extern void path_get(struct path *); +extern void path_get_long(struct path *); extern void path_put(struct path *); +extern void path_put_long(struct path *); static inline int path_equal(const struct path *path1, const struct path *path2) { -- cgit v1.2.3 From 6c23a9681c0fe7fb7dd331b39dda11926f43746e Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Fri, 7 Jan 2011 08:43:37 +0100 Subject: block: add internal hd part table references We can't use krefs since it's apparently restricted to very basic reference counting. This reverts commit e4a683c8. Signed-off-by: Jens Axboe --- include/linux/genhd.h | 27 +++++++++++++++++++++++++-- include/linux/kref.h | 1 - 2 files changed, 25 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/genhd.h b/include/linux/genhd.h index 2ba2792a3dd4..2d0468145967 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -115,8 +115,8 @@ struct hd_struct { #else struct disk_stats dkstats; #endif + atomic_t ref; struct rcu_head rcu_head; - struct kref ref; }; #define GENHD_FL_REMOVABLE 1 @@ -584,7 +584,7 @@ extern struct hd_struct * __must_check add_partition(struct gendisk *disk, sector_t len, int flags, struct partition_meta_info *info); -extern void __delete_partition(struct kref *ref); +extern void __delete_partition(struct hd_struct *); extern void delete_partition(struct gendisk *, int); extern void printk_all_partitions(void); @@ -613,6 +613,29 @@ extern ssize_t part_fail_store(struct device *dev, const char *buf, size_t count); #endif /* CONFIG_FAIL_MAKE_REQUEST */ +static inline void hd_ref_init(struct hd_struct *part) +{ + atomic_set(&part->ref, 1); + smp_mb(); +} + +static inline void hd_struct_get(struct hd_struct *part) +{ + atomic_inc(&part->ref); + smp_mb__after_atomic_inc(); +} + +static inline int hd_struct_try_get(struct hd_struct *part) +{ + return atomic_inc_not_zero(&part->ref); +} + +static inline void hd_struct_put(struct hd_struct *part) +{ + if (atomic_dec_and_test(&part->ref)) + __delete_partition(part); +} + #else /* CONFIG_BLOCK */ static inline void printk_all_partitions(void) { } diff --git a/include/linux/kref.h b/include/linux/kref.h index 90b9e44abf54..6cc38fc07ab7 100644 --- a/include/linux/kref.h +++ b/include/linux/kref.h @@ -23,7 +23,6 @@ struct kref { void kref_init(struct kref *kref); void kref_get(struct kref *kref); -int kref_test_and_get(struct kref *kref); int kref_put(struct kref *kref, void (*release) (struct kref *kref)); #endif /* _KREF_H_ */ -- cgit v1.2.3 From ca86828ccd3128513f6d4e200b437deac95408db Mon Sep 17 00:00:00 2001 From: Robert Richter Date: Thu, 6 Jan 2011 17:51:07 +0100 Subject: x86, AMD, PCI: Add AMD northbridge PCI device id for CPU families 12h and 14h This patch adds the PCI northbridge device id for AMD CPU families 12h and 14h. Both families have implemented the same PCI northbridge device. There are some future use cases that use this PCI device and we would like to clarify its naming. Signed-off-by: Robert Richter Cc: xen-devel@lists.xensource.com Cc: Keir Fraser Cc: Jan Beulich LKML-Reference: <20110106165107.GL4739@erda.amd.com> Signed-off-by: Ingo Molnar --- include/linux/pci_ids.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h index cb845c16ad7d..dd7d4e20d39b 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -518,6 +518,7 @@ #define PCI_DEVICE_ID_AMD_11H_NB_MISC 0x1303 #define PCI_DEVICE_ID_AMD_11H_NB_LINK 0x1304 #define PCI_DEVICE_ID_AMD_15H_NB_MISC 0x1603 +#define PCI_DEVICE_ID_AMD_CNB17H_F3 0x1703 #define PCI_DEVICE_ID_AMD_LANCE 0x2000 #define PCI_DEVICE_ID_AMD_LANCE_HOME 0x2001 #define PCI_DEVICE_ID_AMD_SCSI 0x2020 -- cgit v1.2.3 From 07e06b011db2b3300f6c975ebf293fc4c8c59942 Mon Sep 17 00:00:00 2001 From: Yong Zhang Date: Fri, 7 Jan 2011 15:17:36 +0800 Subject: sched: Consolidate the name of root_task_group and init_task_group root_task_group is the leftover of USER_SCHED, now it's always same to init_task_group. But as Mike suggested, root_task_group is maybe the suitable name to keep for a tree. So in this patch: init_task_group --> root_task_group init_task_group_load --> root_task_group_load INIT_TASK_GROUP_LOAD --> ROOT_TASK_GROUP_LOAD Suggested-by: Mike Galbraith Signed-off-by: Yong Zhang Signed-off-by: Peter Zijlstra LKML-Reference: <20110107071736.GA32635@windriver.com> Signed-off-by: Ingo Molnar --- include/linux/sched.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index 777cd01e240e..341acbbc434a 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -2511,7 +2511,7 @@ extern void normalize_rt_tasks(void); #ifdef CONFIG_CGROUP_SCHED -extern struct task_group init_task_group; +extern struct task_group root_task_group; extern struct task_group *sched_create_group(struct task_group *parent); extern void sched_destroy_group(struct task_group *tg); -- cgit v1.2.3 From c97415a72521071c235e0879f9a600014afd87b1 Mon Sep 17 00:00:00 2001 From: Stefan Achatz Date: Fri, 26 Nov 2010 19:57:29 +0000 Subject: sysfs: Introducing binary attributes for struct class Added dev_bin_attrs to struct class similar to existing dev_attrs. Signed-off-by: Stefan Achatz Acked-by: Greg Kroah-Hartman Signed-off-by: Jiri Kosina --- include/linux/device.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/device.h b/include/linux/device.h index dd4895313468..032bdb5406a2 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -197,6 +197,7 @@ struct class { struct class_attribute *class_attrs; struct device_attribute *dev_attrs; + struct bin_attribute *dev_bin_attrs; struct kobject *dev_kobj; int (*dev_uevent)(struct device *dev, struct kobj_uevent_env *env); -- cgit v1.2.3 From ec6e7c3ae39cb1dc279b5274aaaadd09ff8e224b Mon Sep 17 00:00:00 2001 From: Mathieu Desnoyers Date: Thu, 6 Jan 2011 13:45:32 -0500 Subject: tracing/trivial: Add missing comma in TRACE_EVENT comment Add missing comma within the TRACE_EVENT() example in tracepoint.h. Signed-off-by: Mathieu Desnoyers LKML-Reference: <20110106184532.GA2526@Krystal> CC: Frederic Weisbecker CC: Ingo Molnar CC: Thomas Gleixner Signed-off-by: Steven Rostedt --- include/linux/tracepoint.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/tracepoint.h b/include/linux/tracepoint.h index d3e4f87e95c0..899103c8f6f2 100644 --- a/include/linux/tracepoint.h +++ b/include/linux/tracepoint.h @@ -326,7 +326,7 @@ do_trace: \ * memcpy(__entry->prev_comm, prev->comm, TASK_COMM_LEN); * __entry->next_pid = next->pid; * __entry->next_prio = next->prio; - * ) + * ), * * * * * Formatted output of a trace record via TP_printk(). -- cgit v1.2.3 From bd1c8b22b7b81c6f6c4f5c19cb2387da3d02fb0f Mon Sep 17 00:00:00 2001 From: Lai Jiangshan Date: Tue, 4 Jan 2011 16:06:09 +0800 Subject: tracepoint: Add __rcu annotation Add __rcu annotation to : (struct tracepoint)->funcs Acked-by: Mathieu Desnoyers Signed-off-by: Lai Jiangshan LKML-Reference: <4D22D4F1.50505@cn.fujitsu.com> Signed-off-by: Steven Rostedt --- include/linux/tracepoint.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/tracepoint.h b/include/linux/tracepoint.h index 899103c8f6f2..c6814616653b 100644 --- a/include/linux/tracepoint.h +++ b/include/linux/tracepoint.h @@ -32,7 +32,7 @@ struct tracepoint { int state; /* State. */ void (*regfunc)(void); void (*unregfunc)(void); - struct tracepoint_func *funcs; + struct tracepoint_func __rcu *funcs; } __attribute__((aligned(32))); /* * Aligned on 32 bytes because it is * globally visible and gcc happily -- cgit v1.2.3 From 2d75af2f2a7a6103a6d539a492fe81deacabde44 Mon Sep 17 00:00:00 2001 From: Jason Baron Date: Fri, 7 Jan 2011 13:36:58 -0500 Subject: dynamic debug: Fix build issue with older gcc On older gcc (3.3) dynamic debug fails to compile: include/net/inet_connection_sock.h: In function `inet_csk_reset_xmit_timer': include/net/inet_connection_sock.h:236: error: duplicate label declaration `do_printk' include/net/inet_connection_sock.h:219: error: this is a previous declaration include/net/inet_connection_sock.h:236: error: duplicate label declaration `out' include/net/inet_connection_sock.h:219: error: this is a previous declaration include/net/inet_connection_sock.h:236: error: duplicate label `do_printk' include/net/inet_connection_sock.h:236: error: duplicate label `out' Fix, by reverting the usage of JUMP_LABEL() in dynamic debug for now. Cc: Reported-by: Tetsuo Handa Tested-by: Tetsuo Handa Signed-off-by: Jason Baron Signed-off-by: Steven Rostedt --- include/linux/dynamic_debug.h | 18 ++++-------------- 1 file changed, 4 insertions(+), 14 deletions(-) (limited to 'include/linux') diff --git a/include/linux/dynamic_debug.h b/include/linux/dynamic_debug.h index a90b3892074a..1c70028f81f9 100644 --- a/include/linux/dynamic_debug.h +++ b/include/linux/dynamic_debug.h @@ -44,34 +44,24 @@ int ddebug_add_module(struct _ddebug *tab, unsigned int n, extern int ddebug_remove_module(const char *mod_name); #define dynamic_pr_debug(fmt, ...) do { \ - __label__ do_printk; \ - __label__ out; \ static struct _ddebug descriptor \ __used \ __attribute__((section("__verbose"), aligned(8))) = \ { KBUILD_MODNAME, __func__, __FILE__, fmt, __LINE__, \ _DPRINTK_FLAGS_DEFAULT }; \ - JUMP_LABEL(&descriptor.enabled, do_printk); \ - goto out; \ -do_printk: \ - printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__); \ -out: ; \ + if (unlikely(descriptor.enabled)) \ + printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__); \ } while (0) #define dynamic_dev_dbg(dev, fmt, ...) do { \ - __label__ do_printk; \ - __label__ out; \ static struct _ddebug descriptor \ __used \ __attribute__((section("__verbose"), aligned(8))) = \ { KBUILD_MODNAME, __func__, __FILE__, fmt, __LINE__, \ _DPRINTK_FLAGS_DEFAULT }; \ - JUMP_LABEL(&descriptor.enabled, do_printk); \ - goto out; \ -do_printk: \ - dev_printk(KERN_DEBUG, dev, fmt, ##__VA_ARGS__); \ -out: ; \ + if (unlikely(descriptor.enabled)) \ + dev_printk(KERN_DEBUG, dev, fmt, ##__VA_ARGS__); \ } while (0) #else -- cgit v1.2.3 From 26daa1ed40c6b31b4220581431982814c47c608a Mon Sep 17 00:00:00 2001 From: Jennifer Li Date: Wed, 17 Nov 2010 23:01:59 -0500 Subject: mmc: sdhci: Disable ADMA on some O2Micro SD/MMC parts. This patch disables the broken ADMA on selected O2Micro devices. Signed-off-by: Jennifer Li Reviewed-by: Chris Ball Signed-off-by: Chris Ball --- include/linux/pci_ids.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h index cb845c16ad7d..7a58875cdad5 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -1650,6 +1650,11 @@ #define PCI_DEVICE_ID_O2_6836 0x6836 #define PCI_DEVICE_ID_O2_6812 0x6872 #define PCI_DEVICE_ID_O2_6933 0x6933 +#define PCI_DEVICE_ID_O2_8120 0x8120 +#define PCI_DEVICE_ID_O2_8220 0x8220 +#define PCI_DEVICE_ID_O2_8221 0x8221 +#define PCI_DEVICE_ID_O2_8320 0x8320 +#define PCI_DEVICE_ID_O2_8321 0x8321 #define PCI_VENDOR_ID_3DFX 0x121a #define PCI_DEVICE_ID_3DFX_VOODOO 0x0001 -- cgit v1.2.3 From 04566831a703ae3ef4b49a2deae261c9ed26e020 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Mon, 8 Nov 2010 21:36:50 -0500 Subject: mmc: Aggressive clock gating framework This patch modifies the MMC core code to optionally call the set_ios() operation on the driver with the clock frequency set to 0 (gate) after a grace period of at least 8 MCLK cycles, then restore it (ungate) before any new request. This gives the driver the option to shut down the MCI clock to the MMC/SD card when the clock frequency is 0, i.e. the core has stated that the MCI clock does not need to be generated. It is inspired by existing clock gating code found in the OMAP and Atmel drivers and brings this up to the host abstraction. Gating is performed before and after any MMC request. This patchset implements this for the MMCI/PL180 MMC/SD host controller, but it should be simple to switch OMAP/Atmel over to using this instead. mmc_set_{gated,ungated}() add variable protection to the state holders for the clock gating code. This is particularly important when ordinary .set_ios() calls would race with the .set_ios() call resulting from a delayed gate operation. Signed-off-by: Linus Walleij Reviewed-by: Chris Ball Tested-by: Chris Ball Signed-off-by: Chris Ball --- include/linux/mmc/host.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index 30f6fad99a58..381c77fd4dca 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -172,6 +172,16 @@ struct mmc_host { mmc_pm_flag_t pm_caps; /* supported pm features */ +#ifdef CONFIG_MMC_CLKGATE + int clk_requests; /* internal reference counter */ + unsigned int clk_delay; /* number of MCI clk hold cycles */ + bool clk_gated; /* clock gated */ + struct work_struct clk_gate_work; /* delayed clock gate */ + unsigned int clk_old; /* old clock value cache */ + spinlock_t clk_lock; /* lock for clk fields */ + struct mutex clk_gate_mutex; /* mutex for clock gating */ +#endif + /* host specific block data */ unsigned int max_seg_size; /* see blk_queue_max_segment_size */ unsigned short max_segs; /* see blk_queue_max_segments */ -- cgit v1.2.3 From 8f230f454fe04ba326ffaead3a6b88dcf44eaf4b Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Wed, 8 Dec 2010 10:04:30 +0100 Subject: mmc: Add support for JMicron 388 SD/MMC controller JMicron 388 SD/MMC combo controller supports the 1.8V low-voltage for SD, but MMC doesn't work with the low-voltage, resulting in an error at probing. This patch adds the support for multiple voltage mask per device type, so that SD works with 1.8V while MMC forces 3.3V. Here new ocr_avail_* fields for each device are introduced, so that the actual OCR mask is switched dynamically. Also, the restriction of low-voltage in core/sd.c is removed when the bit is allowed explicitly via ocr_avail_sd mask. This patch was rewritten from scratch based on Aries' original code. Signed-off-by: Aries Lee Signed-off-by: Takashi Iwai Reviewed-by: Chris Ball Signed-off-by: Chris Ball --- include/linux/mmc/host.h | 3 +++ include/linux/mmc/sdhci.h | 4 ++++ include/linux/pci_ids.h | 2 ++ 3 files changed, 9 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index 381c77fd4dca..4a9d9d2589c7 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -131,6 +131,9 @@ struct mmc_host { unsigned int f_max; unsigned int f_init; u32 ocr_avail; + u32 ocr_avail_sdio; /* SDIO-specific OCR */ + u32 ocr_avail_sd; /* SD-specific OCR */ + u32 ocr_avail_mmc; /* MMC-specific OCR */ struct notifier_block pm_notify; #define MMC_VDD_165_195 0x00000080 /* VDD voltage 1.65 - 1.95 */ diff --git a/include/linux/mmc/sdhci.h b/include/linux/mmc/sdhci.h index 1fdc673f2396..0d953f513d81 100644 --- a/include/linux/mmc/sdhci.h +++ b/include/linux/mmc/sdhci.h @@ -139,6 +139,10 @@ struct sdhci_host { unsigned int caps; /* Alternative capabilities */ + unsigned int ocr_avail_sdio; /* OCR bit masks */ + unsigned int ocr_avail_sd; + unsigned int ocr_avail_mmc; + unsigned long private[0] ____cacheline_aligned; }; #endif /* __SDHCI_H */ diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h index 7a58875cdad5..2f17b4ccbb58 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -2368,6 +2368,8 @@ #define PCI_DEVICE_ID_JMICRON_JMB38X_SD 0x2381 #define PCI_DEVICE_ID_JMICRON_JMB38X_MMC 0x2382 #define PCI_DEVICE_ID_JMICRON_JMB38X_MS 0x2383 +#define PCI_DEVICE_ID_JMICRON_JMB388_SD 0x2391 +#define PCI_DEVICE_ID_JMICRON_JMB388_ESD 0x2392 #define PCI_VENDOR_ID_KORENIX 0x1982 #define PCI_DEVICE_ID_KORENIX_JETCARDF0 0x1600 -- cgit v1.2.3 From 080bc9774b6f1e3866747b18631bad26f47c22ce Mon Sep 17 00:00:00 2001 From: Ohad Ben-Cohen Date: Sun, 28 Nov 2010 07:21:29 +0200 Subject: mmc: sdio: don't reinitialize nonremovable powered-resumed cards Upon system resume, SDIO core must reinitialize cards that were powered off during suspend. If the card had its power kept during suspend (and thus it is 'powered-resumed'), SDIO core performs only a limited reinitializing, mainly needed to make sure that the card wasn't removed/replaced. If a __nonremovable__ card is powered-resumed, we can safely skip the reinitializing phase. Note: 9b966aa (mmc: sdio: fully reconfigure oldcard on resume) removed the bus width reconfiguration since mmc_sdio_init_card already does it. It is brought back now in case mmc_sdio_init_card is skipped. Signed-off-by: Ohad Ben-Cohen Signed-off-by: Chris Ball --- include/linux/mmc/host.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index 4a9d9d2589c7..3a85e73a38a9 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -320,5 +320,10 @@ static inline int mmc_card_is_removable(struct mmc_host *host) return !(host->caps & MMC_CAP_NONREMOVABLE) && mmc_assume_removable; } +static inline int mmc_card_is_powered_resumed(struct mmc_host *host) +{ + return host->pm_flags & MMC_PM_KEEP_POWER; +} + #endif -- cgit v1.2.3 From a081748735c5feb96b1365e78a5ff0fb6ca7e3a4 Mon Sep 17 00:00:00 2001 From: Grant Likely Date: Sat, 8 Jan 2011 21:42:42 -0700 Subject: of/flattree: forward declare struct device_node in of_fdt.h This patch forward declares struct device_node to fix a compile error when of_fdt.h is included, but of.h is not. Alternately, including linux/of.h could have been added to of_fdt.h, but that pulls in a lot of unnecessary declarations when only working with the flattened form. Signed-off-by: Grant Likely --- include/linux/of_fdt.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/of_fdt.h b/include/linux/of_fdt.h index ee96091f7d25..0ef22a1f129e 100644 --- a/include/linux/of_fdt.h +++ b/include/linux/of_fdt.h @@ -59,6 +59,8 @@ struct boot_param_header { #if defined(CONFIG_OF_FLATTREE) +struct device_node; + /* For scanning an arbitrary device-tree at any time */ extern char *of_fdt_get_string(struct boot_param_header *blob, u32 offset); extern void *of_fdt_get_property(struct boot_param_header *blob, -- cgit v1.2.3 From 22113efd00491310da802f3b1a9a66cfcf415fac Mon Sep 17 00:00:00 2001 From: Aries Lee Date: Wed, 15 Dec 2010 08:14:24 +0100 Subject: mmc: Test bus-width for old MMC devices Some old MMC devices fail with the 4/8 bits the driver tries to use exclusively. This patch adds a test for the given bus setup and falls back to the lower bit mode (until 1-bit mode) when the test fails. [Major rework and refactoring by tiwai] [Quirk addition and many fixes by prakity] Signed-off-by: Aries Lee Signed-off-by: Takashi Iwai Signed-off-by: Philip Rakity Tested-by: Philip Rakity Signed-off-by: Chris Ball --- include/linux/mmc/host.h | 1 + include/linux/mmc/mmc.h | 2 ++ 2 files changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index 3a85e73a38a9..bcb793ec7374 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -172,6 +172,7 @@ struct mmc_host { #define MMC_CAP_1_2V_DDR (1 << 12) /* can support */ /* DDR mode at 1.2V */ #define MMC_CAP_POWER_OFF_CARD (1 << 13) /* Can power off after boot */ +#define MMC_CAP_BUS_WIDTH_TEST (1 << 14) /* CMD14/CMD19 bus width ok */ mmc_pm_flag_t pm_caps; /* supported pm features */ diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h index 956fbd877692..612301f85d14 100644 --- a/include/linux/mmc/mmc.h +++ b/include/linux/mmc/mmc.h @@ -40,7 +40,9 @@ #define MMC_READ_DAT_UNTIL_STOP 11 /* adtc [31:0] dadr R1 */ #define MMC_STOP_TRANSMISSION 12 /* ac R1b */ #define MMC_SEND_STATUS 13 /* ac [31:16] RCA R1 */ +#define MMC_BUS_TEST_R 14 /* adtc R1 */ #define MMC_GO_INACTIVE_STATE 15 /* ac [31:16] RCA */ +#define MMC_BUS_TEST_W 19 /* adtc R1 */ #define MMC_SPI_READ_OCR 58 /* spi spi_R3 */ #define MMC_SPI_CRC_ON_OFF 59 /* spi [0:0] flag spi_R1 */ -- cgit v1.2.3 From 30652aa36b58d57fcc1a0acce51e391bbb6edf5e Mon Sep 17 00:00:00 2001 From: Olof Johansson Date: Sat, 1 Jan 2011 18:37:32 -0600 Subject: mmc: sdhci: add quirk for max len ADMA descriptors Some controllers misparse segment length 0 as being 0, not 65536. Add a quirk to deal with it. Signed-off-by: Olof Johansson Reviewed-by: Chris Ball Signed-off-by: Chris Ball --- include/linux/mmc/sdhci.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mmc/sdhci.h b/include/linux/mmc/sdhci.h index 0d953f513d81..83bd9f76709a 100644 --- a/include/linux/mmc/sdhci.h +++ b/include/linux/mmc/sdhci.h @@ -83,6 +83,8 @@ struct sdhci_host { #define SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12 (1<<28) /* Controller doesn't have HISPD bit field in HI-SPEED SD card */ #define SDHCI_QUIRK_NO_HISPD_BIT (1<<29) +/* Controller treats ADMA descriptors with length 0000h incorrectly */ +#define SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC (1<<30) int irq; /* Device IRQ */ void __iomem *ioaddr; /* Mapped address */ -- cgit v1.2.3 From f95f3850f7a9e1d49ebc5b6e72e7cc3ec3685b0b Mon Sep 17 00:00:00 2001 From: Will Newton Date: Sun, 2 Jan 2011 01:11:59 -0500 Subject: mmc: dw_mmc: Add Synopsys DesignWare mmc host driver. This adds the mmc host driver for the Synopsys DesignWare mmc host controller, found in a number of embedded SoC designs. Signed-off-by: Will Newton Reviewed-by: Matt Fleming Reviewed-by: Chris Ball Signed-off-by: Chris Ball --- include/linux/mmc/dw_mmc.h | 217 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 217 insertions(+) create mode 100644 include/linux/mmc/dw_mmc.h (limited to 'include/linux') diff --git a/include/linux/mmc/dw_mmc.h b/include/linux/mmc/dw_mmc.h new file mode 100644 index 000000000000..16b0261763ed --- /dev/null +++ b/include/linux/mmc/dw_mmc.h @@ -0,0 +1,217 @@ +/* + * Synopsys DesignWare Multimedia Card Interface driver + * (Based on NXP driver for lpc 31xx) + * + * Copyright (C) 2009 NXP Semiconductors + * Copyright (C) 2009, 2010 Imagination Technologies Ltd. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#ifndef _LINUX_MMC_DW_MMC_H_ +#define _LINUX_MMC_DW_MMC_H_ + +#define MAX_MCI_SLOTS 2 + +enum dw_mci_state { + STATE_IDLE = 0, + STATE_SENDING_CMD, + STATE_SENDING_DATA, + STATE_DATA_BUSY, + STATE_SENDING_STOP, + STATE_DATA_ERROR, +}; + +enum { + EVENT_CMD_COMPLETE = 0, + EVENT_XFER_COMPLETE, + EVENT_DATA_COMPLETE, + EVENT_DATA_ERROR, + EVENT_XFER_ERROR +}; + +struct mmc_data; + +/** + * struct dw_mci - MMC controller state shared between all slots + * @lock: Spinlock protecting the queue and associated data. + * @regs: Pointer to MMIO registers. + * @sg: Scatterlist entry currently being processed by PIO code, if any. + * @pio_offset: Offset into the current scatterlist entry. + * @cur_slot: The slot which is currently using the controller. + * @mrq: The request currently being processed on @cur_slot, + * or NULL if the controller is idle. + * @cmd: The command currently being sent to the card, or NULL. + * @data: The data currently being transferred, or NULL if no data + * transfer is in progress. + * @use_dma: Whether DMA channel is initialized or not. + * @sg_dma: Bus address of DMA buffer. + * @sg_cpu: Virtual address of DMA buffer. + * @dma_ops: Pointer to platform-specific DMA callbacks. + * @cmd_status: Snapshot of SR taken upon completion of the current + * command. Only valid when EVENT_CMD_COMPLETE is pending. + * @data_status: Snapshot of SR taken upon completion of the current + * data transfer. Only valid when EVENT_DATA_COMPLETE or + * EVENT_DATA_ERROR is pending. + * @stop_cmdr: Value to be loaded into CMDR when the stop command is + * to be sent. + * @dir_status: Direction of current transfer. + * @tasklet: Tasklet running the request state machine. + * @card_tasklet: Tasklet handling card detect. + * @pending_events: Bitmask of events flagged by the interrupt handler + * to be processed by the tasklet. + * @completed_events: Bitmask of events which the state machine has + * processed. + * @state: Tasklet state. + * @queue: List of slots waiting for access to the controller. + * @bus_hz: The rate of @mck in Hz. This forms the basis for MMC bus + * rate and timeout calculations. + * @current_speed: Configured rate of the controller. + * @num_slots: Number of slots available. + * @pdev: Platform device associated with the MMC controller. + * @pdata: Platform data associated with the MMC controller. + * @slot: Slots sharing this MMC controller. + * @data_shift: log2 of FIFO item size. + * @push_data: Pointer to FIFO push function. + * @pull_data: Pointer to FIFO pull function. + * @quirks: Set of quirks that apply to specific versions of the IP. + * + * Locking + * ======= + * + * @lock is a softirq-safe spinlock protecting @queue as well as + * @cur_slot, @mrq and @state. These must always be updated + * at the same time while holding @lock. + * + * The @mrq field of struct dw_mci_slot is also protected by @lock, + * and must always be written at the same time as the slot is added to + * @queue. + * + * @pending_events and @completed_events are accessed using atomic bit + * operations, so they don't need any locking. + * + * None of the fields touched by the interrupt handler need any + * locking. However, ordering is important: Before EVENT_DATA_ERROR or + * EVENT_DATA_COMPLETE is set in @pending_events, all data-related + * interrupts must be disabled and @data_status updated with a + * snapshot of SR. Similarly, before EVENT_CMD_COMPLETE is set, the + * CMDRDY interupt must be disabled and @cmd_status updated with a + * snapshot of SR, and before EVENT_XFER_COMPLETE can be set, the + * bytes_xfered field of @data must be written. This is ensured by + * using barriers. + */ +struct dw_mci { + spinlock_t lock; + void __iomem *regs; + + struct scatterlist *sg; + unsigned int pio_offset; + + struct dw_mci_slot *cur_slot; + struct mmc_request *mrq; + struct mmc_command *cmd; + struct mmc_data *data; + + /* DMA interface members*/ + int use_dma; + + dma_addr_t sg_dma; + void *sg_cpu; + struct dw_mci_dma_ops *dma_ops; +#ifdef CONFIG_MMC_DW_IDMAC + unsigned int ring_size; +#else + struct dw_mci_dma_data *dma_data; +#endif + u32 cmd_status; + u32 data_status; + u32 stop_cmdr; + u32 dir_status; + struct tasklet_struct tasklet; + struct tasklet_struct card_tasklet; + unsigned long pending_events; + unsigned long completed_events; + enum dw_mci_state state; + struct list_head queue; + + u32 bus_hz; + u32 current_speed; + u32 num_slots; + struct platform_device *pdev; + struct dw_mci_board *pdata; + struct dw_mci_slot *slot[MAX_MCI_SLOTS]; + + /* FIFO push and pull */ + int data_shift; + void (*push_data)(struct dw_mci *host, void *buf, int cnt); + void (*pull_data)(struct dw_mci *host, void *buf, int cnt); + + /* Workaround flags */ + u32 quirks; +}; + +/* DMA ops for Internal/External DMAC interface */ +struct dw_mci_dma_ops { + /* DMA Ops */ + int (*init)(struct dw_mci *host); + void (*start)(struct dw_mci *host, unsigned int sg_len); + void (*complete)(struct dw_mci *host); + void (*stop)(struct dw_mci *host); + void (*cleanup)(struct dw_mci *host); + void (*exit)(struct dw_mci *host); +}; + +/* IP Quirks/flags. */ +/* No special quirks or flags to cater for */ +#define DW_MCI_QUIRK_NONE 0 +/* DTO fix for command transmission with IDMAC configured */ +#define DW_MCI_QUIRK_IDMAC_DTO 1 +/* delay needed between retries on some 2.11a implementations */ +#define DW_MCI_QUIRK_RETRY_DELAY 2 +/* High Speed Capable - Supports HS cards (upto 50MHz) */ +#define DW_MCI_QUIRK_HIGHSPEED 4 + + +struct dma_pdata; + +struct block_settings { + unsigned short max_segs; /* see blk_queue_max_segments */ + unsigned int max_blk_size; /* maximum size of one mmc block */ + unsigned int max_blk_count; /* maximum number of blocks in one req*/ + unsigned int max_req_size; /* maximum number of bytes in one req*/ + unsigned int max_seg_size; /* see blk_queue_max_segment_size */ +}; + +/* Board platform data */ +struct dw_mci_board { + u32 num_slots; + + u32 quirks; /* Workaround / Quirk flags */ + unsigned int bus_hz; /* Bus speed */ + + /* delay in mS before detecting cards after interrupt */ + u32 detect_delay_ms; + + int (*init)(u32 slot_id, irq_handler_t , void *); + int (*get_ro)(u32 slot_id); + int (*get_cd)(u32 slot_id); + int (*get_ocr)(u32 slot_id); + int (*get_bus_wd)(u32 slot_id); + /* + * Enable power to selected slot and set voltage to desired level. + * Voltage levels are specified using MMC_VDD_xxx defines defined + * in linux/mmc/host.h file. + */ + void (*setpower)(u32 slot_id, u32 volt); + void (*exit)(u32 slot_id); + void (*select_slot)(u32 slot_id); + + struct dw_mci_dma_ops *dma_ops; + struct dma_pdata *data; + struct block_settings *blk_settings; +}; + +#endif /* _LINUX_MMC_DW_MMC_H_ */ -- cgit v1.2.3 From 93173054f2979de41b1912b19f0b57edfb35fcdc Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Wed, 22 Dec 2010 12:02:15 +0100 Subject: mmc: tmio_mmc: implement a bounce buffer for unaligned DMA For example, with SDIO WLAN cards, some transfers happen with buffers at odd addresses, whereas the SH-Mobile DMA engine requires even addresses for SDHI. This patch extends the tmio driver with a bounce buffer, that is used for single entry scatter-gather lists both for sending and receiving. If we ever encounter unaligned transfers with multi-element sg lists, this patch will have to be extended. For now it just falls back to PIO in this and other unsupported cases. Signed-off-by: Guennadi Liakhovetski Acked-by: Samuel Ortiz Signed-off-by: Chris Ball --- include/linux/mfd/tmio.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/mfd/tmio.h b/include/linux/mfd/tmio.h index 085f041197dc..dbfc053b1f95 100644 --- a/include/linux/mfd/tmio.h +++ b/include/linux/mfd/tmio.h @@ -66,6 +66,7 @@ void tmio_core_mmc_clk_div(void __iomem *cnf, int shift, int state); struct tmio_mmc_dma { void *chan_priv_tx; void *chan_priv_rx; + int alignment_shift; }; /* -- cgit v1.2.3 From 845ecd20239c28e97e766ff54078a58be19f3a91 Mon Sep 17 00:00:00 2001 From: Arnd Hannemann Date: Tue, 28 Dec 2010 23:22:31 +0100 Subject: mmc: tmio_mmc: implement SDIO IRQ support This patch implements SDIO IRQ support for mfds which announce the TMIO_MMC_SDIO_IRQ flag for tmio_mmc. If MMC_CAP_SDIO_IRQ is also set SDIO IRQ signalling is activated. Tested with a b43-based wireless SDIO card and sh_mobile_sdhi. Signed-off-by: Arnd Hannemann Signed-off-by: Chris Ball --- include/linux/mfd/tmio.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/tmio.h b/include/linux/mfd/tmio.h index dbfc053b1f95..8e70310ee945 100644 --- a/include/linux/mfd/tmio.h +++ b/include/linux/mfd/tmio.h @@ -57,6 +57,10 @@ * is configured in 4-bit mode. */ #define TMIO_MMC_BLKSZ_2BYTES (1 << 1) +/* + * Some controllers can support SDIO IRQ signalling. + */ +#define TMIO_MMC_SDIO_IRQ (1 << 2) int tmio_core_mmc_enable(void __iomem *cnf, int shift, unsigned long base); int tmio_core_mmc_resume(void __iomem *cnf, int shift, unsigned long base); -- cgit v1.2.3 From 6099469805c24af14250e182bb9ca082b8a6b716 Mon Sep 17 00:00:00 2001 From: Roland Stigge Date: Sun, 9 Jan 2011 09:31:39 -0500 Subject: hwmon: Support for Dallas Semiconductor DS620 Driver for Dallas Semiconductor DS620 temperature sensor and thermostat Signed-off-by: Roland Stigge Signed-off-by: Guenter Roeck --- include/linux/i2c/ds620.h | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) create mode 100644 include/linux/i2c/ds620.h (limited to 'include/linux') diff --git a/include/linux/i2c/ds620.h b/include/linux/i2c/ds620.h new file mode 100644 index 000000000000..736bb87ac0fc --- /dev/null +++ b/include/linux/i2c/ds620.h @@ -0,0 +1,21 @@ +#ifndef _LINUX_DS620_H +#define _LINUX_DS620_H + +#include +#include + +/* platform data for the DS620 temperature sensor and thermostat */ + +struct ds620_platform_data { + /* + * Thermostat output pin PO mode: + * 0 = always low (default) + * 1 = PO_LOW + * 2 = PO_HIGH + * + * (see Documentation/hwmon/ds620) + */ + int pomode; +}; + +#endif /* _LINUX_DS620_H */ -- cgit v1.2.3 From 49da97dcb6b00a6869bbc3fa6ec7fdfd8a6e41a3 Mon Sep 17 00:00:00 2001 From: Shawn Guo Date: Wed, 5 Jan 2011 21:13:11 +0000 Subject: net/fec: add mac field into platform data and consolidate fec_get_mac Add mac field into fec_platform_data and consolidate function fec_get_mac to get mac address in following order. 1) module parameter via kernel command line fec.macaddr=0x00,0x04,... 2) from flash in case of CONFIG_M5272 or fec_platform_data mac field for others, which typically have mac stored in fuse 3) fec mac address registers set by bootloader Signed-off-by: Shawn Guo Signed-off-by: David S. Miller --- include/linux/fec.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/fec.h b/include/linux/fec.h index 5d3523d8dd0c..bcff455d1d53 100644 --- a/include/linux/fec.h +++ b/include/linux/fec.h @@ -3,6 +3,8 @@ * Copyright (c) 2009 Orex Computed Radiography * Baruch Siach * + * Copyright (C) 2010 Freescale Semiconductor, Inc. + * * Header file for the FEC platform data * * This program is free software; you can redistribute it and/or modify @@ -16,6 +18,7 @@ struct fec_platform_data { phy_interface_t phy; + unsigned char mac[ETH_ALEN]; }; #endif -- cgit v1.2.3 From f01a5236bd4b140198fbcc550f085e8361fd73fa Mon Sep 17 00:00:00 2001 From: Jesse Gross Date: Sun, 9 Jan 2011 06:23:31 +0000 Subject: net offloading: Generalize netif_get_vlan_features(). MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit netif_get_vlan_features() is currently only used by netif_needs_gso(), so it only concerns itself with GSO features. However, several other places also should take into account the contents of the packet when deciding whether to offload to hardware. This generalizes the function to return features about all of the various forms of offloading. Since offloads tend to be linked together, this avoids duplicating the logic in each location (i.e. the scatter/gather code also needs the checksum logic). Suggested-by: Michał Mirosław Signed-off-by: Jesse Gross Signed-off-by: David S. Miller --- include/linux/netdevice.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 0f6b1c965815..d4dac09a5ad2 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -2303,7 +2303,7 @@ unsigned long netdev_fix_features(unsigned long features, const char *name); void netif_stacked_transfer_operstate(const struct net_device *rootdev, struct net_device *dev); -int netif_get_vlan_features(struct sk_buff *skb, struct net_device *dev); +int netif_skb_features(struct sk_buff *skb); static inline int net_gso_ok(int features, int gso_type) { @@ -2320,7 +2320,7 @@ static inline int skb_gso_ok(struct sk_buff *skb, int features) static inline int netif_needs_gso(struct net_device *dev, struct sk_buff *skb) { if (skb_is_gso(skb)) { - int features = netif_get_vlan_features(skb, dev); + int features = netif_skb_features(skb); return (!skb_gso_ok(skb, features) || unlikely(skb->ip_summed != CHECKSUM_PARTIAL)); -- cgit v1.2.3 From fc741216db156994c554ac31c1151fe0e00d8f0e Mon Sep 17 00:00:00 2001 From: Jesse Gross Date: Sun, 9 Jan 2011 06:23:32 +0000 Subject: net offloading: Pass features into netif_needs_gso(). Now that there is a single function that can compute the device features relevant to a packet, we don't want to run it for each offload. This converts netif_needs_gso() to take the features of the device, rather than computing them itself. Signed-off-by: Jesse Gross Signed-off-by: David S. Miller --- include/linux/netdevice.h | 12 +++--------- 1 file changed, 3 insertions(+), 9 deletions(-) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index d4dac09a5ad2..de2bfe6da359 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -2317,16 +2317,10 @@ static inline int skb_gso_ok(struct sk_buff *skb, int features) (!skb_has_frag_list(skb) || (features & NETIF_F_FRAGLIST)); } -static inline int netif_needs_gso(struct net_device *dev, struct sk_buff *skb) +static inline int netif_needs_gso(struct sk_buff *skb, int features) { - if (skb_is_gso(skb)) { - int features = netif_skb_features(skb); - - return (!skb_gso_ok(skb, features) || - unlikely(skb->ip_summed != CHECKSUM_PARTIAL)); - } - - return 0; + return skb_is_gso(skb) && (!skb_gso_ok(skb, features) || + unlikely(skb->ip_summed != CHECKSUM_PARTIAL)); } static inline void netif_set_gso_max_size(struct net_device *dev, -- cgit v1.2.3 From 2a8c0c68487a68441e701f493f43fd547d87c8df Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Sat, 8 Jan 2011 19:37:20 -0800 Subject: fs: fix dcache.h kernel-doc notation Fix new kernel-doc notation warning in dcache.h: Warning(include/linux/dcache.h:316): Excess function parameter 'Returns' description in '__d_rcu_to_refcount' Signed-off-by: Randy Dunlap Cc: Nick Piggin Signed-off-by: Linus Torvalds --- include/linux/dcache.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/dcache.h b/include/linux/dcache.h index bd07758943e0..59fcd24b1468 100644 --- a/include/linux/dcache.h +++ b/include/linux/dcache.h @@ -307,7 +307,7 @@ extern struct dentry *__d_lookup_rcu(struct dentry *parent, struct qstr *name, * __d_rcu_to_refcount - take a refcount on dentry if sequence check is ok * @dentry: dentry to take a ref on * @seq: seqcount to verify against - * @Returns: 0 on failure, else 1. + * Returns: 0 on failure, else 1. * * __d_rcu_to_refcount operates on a dentry,seq pair that was returned * by __d_lookup_rcu, to get a reference on an rcu-walk dentry. -- cgit v1.2.3 From 175881db8916a5f5cdf920d32214caef588870fd Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Sat, 8 Jan 2011 19:38:02 -0800 Subject: hrtimer.h: fix kernel-doc warning Fix new kernel-doc notation warning in hrtimer.h: Warning(include/linux/hrtimer.h:150): Excess struct/union/enum/typedef member 'first' description in 'hrtimer_clock_base' Signed-off-by: Randy Dunlap Signed-off-by: Linus Torvalds --- include/linux/hrtimer.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/hrtimer.h b/include/linux/hrtimer.h index 330586ffffbb..f376ddc64c4d 100644 --- a/include/linux/hrtimer.h +++ b/include/linux/hrtimer.h @@ -131,7 +131,6 @@ struct hrtimer_sleeper { * @index: clock type index for per_cpu support when moving a * timer to a base on another cpu. * @active: red black tree root node for the active timers - * @first: pointer to the timer node which expires first * @resolution: the resolution of the clock, in nanoseconds * @get_time: function to retrieve the current time of the clock * @softirq_time: the time when running the hrtimer queue in the softirq -- cgit v1.2.3 From 0dc1488527a3c01383a50e5df7187219567586a3 Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Sat, 8 Jan 2011 19:40:33 -0800 Subject: pipe_fs_i.h: fix kernel-doc warning Fix kernel-doc notation warnings in pipe_fs_i.h: Warning(include/linux/pipe_fs_i.h:58): No description found for parameter 'buffers' Signed-off-by: Randy Dunlap Signed-off-by: Linus Torvalds --- include/linux/pipe_fs_i.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/pipe_fs_i.h b/include/linux/pipe_fs_i.h index bb27d7ec2fb9..77257c92155a 100644 --- a/include/linux/pipe_fs_i.h +++ b/include/linux/pipe_fs_i.h @@ -30,6 +30,7 @@ struct pipe_buffer { * struct pipe_inode_info - a linux kernel pipe * @wait: reader/writer wait point in case of empty/full pipe * @nrbufs: the number of non-empty pipe buffers in this pipe + * @buffers: total number of buffers (should be a power of 2) * @curbuf: the current pipe buffer entry * @tmp_page: cached released page * @readers: number of current readers of this pipe -- cgit v1.2.3 From 37721e1b0cf98cb65895f234d8c500d270546529 Mon Sep 17 00:00:00 2001 From: Alexey Dobriyan Date: Mon, 10 Jan 2011 08:17:10 +0200 Subject: headers: path.h redux Remove path.h from sched.h and other files. Signed-off-by: Alexey Dobriyan Signed-off-by: Linus Torvalds --- include/linux/audit.h | 1 + include/linux/dcookies.h | 2 +- include/linux/sched.h | 1 - 3 files changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/audit.h b/include/linux/audit.h index 8b5c0620abf9..359df0487690 100644 --- a/include/linux/audit.h +++ b/include/linux/audit.h @@ -372,6 +372,7 @@ struct audit_buffer; struct audit_context; struct inode; struct netlink_skb_parms; +struct path; struct linux_binprm; struct mq_attr; struct mqstat; diff --git a/include/linux/dcookies.h b/include/linux/dcookies.h index 24c806f12a6c..5ac3bdd5cee6 100644 --- a/include/linux/dcookies.h +++ b/include/linux/dcookies.h @@ -13,10 +13,10 @@ #ifdef CONFIG_PROFILING #include -#include #include struct dcookie_user; +struct path; /** * dcookie_register - register a user of dcookies diff --git a/include/linux/sched.h b/include/linux/sched.h index 341acbbc434a..c118a7f203aa 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -70,7 +70,6 @@ struct sched_param { #include #include #include -#include #include #include #include -- cgit v1.2.3 From 57cc7215b70856dc6bae8e55b00ecd7b1d7429b1 Mon Sep 17 00:00:00 2001 From: Alexey Dobriyan Date: Mon, 10 Jan 2011 08:18:25 +0200 Subject: headers: kobject.h redux Remove kobject.h from files which don't need it, notably, sched.h and fs.h. Signed-off-by: Alexey Dobriyan Signed-off-by: Linus Torvalds --- include/linux/firmware-map.h | 1 - include/linux/fs.h | 2 +- include/linux/sched.h | 1 - include/linux/sunrpc/cache.h | 1 + 4 files changed, 2 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/firmware-map.h b/include/linux/firmware-map.h index c6dcc1dfe781..43fe52fcef0f 100644 --- a/include/linux/firmware-map.h +++ b/include/linux/firmware-map.h @@ -17,7 +17,6 @@ #define _LINUX_FIRMWARE_MAP_H #include -#include /* * provide a dummy interface if CONFIG_FIRMWARE_MEMMAP is disabled diff --git a/include/linux/fs.h b/include/linux/fs.h index baf3e556ff0e..f84d9928bdb1 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -382,7 +382,6 @@ struct inodes_stat_t { #include #include #include -#include #include #include #include @@ -402,6 +401,7 @@ struct hd_geometry; struct iovec; struct nameidata; struct kiocb; +struct kobject; struct pipe_inode_info; struct poll_table_struct; struct kstatfs; diff --git a/include/linux/sched.h b/include/linux/sched.h index c118a7f203aa..abc527aa8550 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -87,7 +87,6 @@ struct sched_param { #include #include #include -#include #include #include diff --git a/include/linux/sunrpc/cache.h b/include/linux/sunrpc/cache.h index 6950c981882d..78aa104250b7 100644 --- a/include/linux/sunrpc/cache.h +++ b/include/linux/sunrpc/cache.h @@ -13,6 +13,7 @@ #ifndef _LINUX_SUNRPC_CACHE_H_ #define _LINUX_SUNRPC_CACHE_H_ +#include #include #include #include -- cgit v1.2.3 From 1a7d946993aaf2a79e9c65abbe169a108e351bcb Mon Sep 17 00:00:00 2001 From: Mattia Dongili Date: Sat, 8 Jan 2011 18:47:29 +0900 Subject: sony-laptop: support new hotkeys on the P, Z and EC series Add new mappings for assist, VAIO, zoom and eject buttons present on refurbished P, Z and EC models. Reported-by: Gyorgy Jeney Reported-by: Stephan Mueller Cc: Dmitry Torokhov Cc: Matthew Garrett Signed-off-by: Mattia Dongili Signed-off-by: Matthew Garrett --- include/linux/sonypi.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/sonypi.h b/include/linux/sonypi.h index 4f95c1aac2fd..0e6dc3891942 100644 --- a/include/linux/sonypi.h +++ b/include/linux/sonypi.h @@ -112,6 +112,7 @@ #define SONYPI_EVENT_VOLUME_DEC_PRESSED 70 #define SONYPI_EVENT_BRIGHTNESS_PRESSED 71 #define SONYPI_EVENT_MEDIA_PRESSED 72 +#define SONYPI_EVENT_VENDOR_PRESSED 73 /* get/set brightness */ #define SONYPI_IOCGBRT _IOR('v', 0, __u8) -- cgit v1.2.3 From 8aefcd557d26d0023a36f9ec5afbf55e59f8f26b Mon Sep 17 00:00:00 2001 From: Theodore Ts'o Date: Mon, 10 Jan 2011 12:29:43 -0500 Subject: ext4: dynamically allocate the jbd2_inode in ext4_inode_info as necessary Replace the jbd2_inode structure (which is 48 bytes) with a pointer and only allocate the jbd2_inode when it is needed --- that is, when the file system has a journal present and the inode has been opened for writing. This allows us to further slim down the ext4_inode_info structure. Signed-off-by: "Theodore Ts'o" --- include/linux/jbd2.h | 20 ++++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h index 2ae86aa21fce..27e79c27ba08 100644 --- a/include/linux/jbd2.h +++ b/include/linux/jbd2.h @@ -94,7 +94,7 @@ extern void jbd2_free(void *ptr, size_t size); * * This is an opaque datatype. **/ -typedef struct handle_s handle_t; /* Atomic operation type */ +typedef struct jbd2_journal_handle handle_t; /* Atomic operation type */ /** @@ -416,7 +416,7 @@ struct jbd2_revoke_table_s; * in so it can be fixed later. */ -struct handle_s +struct jbd2_journal_handle { /* Which compound transaction is this update a part of? */ transaction_t *h_transaction; @@ -1158,6 +1158,22 @@ static inline void jbd2_free_handle(handle_t *handle) kmem_cache_free(jbd2_handle_cache, handle); } +/* + * jbd2_inode management (optional, for those file systems that want to use + * dynamically allocated jbd2_inode structures) + */ +extern struct kmem_cache *jbd2_inode_cache; + +static inline struct jbd2_inode *jbd2_alloc_inode(gfp_t gfp_flags) +{ + return kmem_cache_alloc(jbd2_inode_cache, gfp_flags); +} + +static inline void jbd2_free_inode(struct jbd2_inode *jinode) +{ + kmem_cache_free(jbd2_inode_cache, jinode); +} + /* Primary revoke support */ #define JOURNAL_REVOKE_DEFAULT_HASH 256 extern int jbd2_journal_init_revoke(journal_t *, int); -- cgit v1.2.3 From b853b96b1dbdc05fc8eae141a595366d8172962b Mon Sep 17 00:00:00 2001 From: Lukas Czerner Date: Mon, 22 Nov 2010 12:29:17 +0100 Subject: ext3: Add batched discard support for ext3 Walk through allocation groups and trim all free extents. It can be invoked through FITRIM ioctl on the file system. The main idea is to provide a way to trim the whole file system if needed, since some SSD's may suffer from performance loss after the whole device was filled (it does not mean that fs is full!). It search for free extents in allocation groups specified by Byte range start -> start+len. When the free extent is within this range, blocks are marked as used and then trimmed. Afterwards these blocks are marked as free in per-group bitmap. [JK: Fixed up error handling and trimming of a single group] Signed-off-by: Lukas Czerner Reviewed-by: Jan Kara Reviewed-by: Dmitry Monakhov Signed-off-by: Jan Kara --- include/linux/ext3_fs.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/ext3_fs.h b/include/linux/ext3_fs.h index 6ce1bca01724..a443965946bb 100644 --- a/include/linux/ext3_fs.h +++ b/include/linux/ext3_fs.h @@ -856,6 +856,7 @@ extern struct ext3_group_desc * ext3_get_group_desc(struct super_block * sb, extern int ext3_should_retry_alloc(struct super_block *sb, int *retries); extern void ext3_init_block_alloc_info(struct inode *); extern void ext3_rsv_window_add(struct super_block *sb, struct ext3_reserve_window_node *rsv); +extern int ext3_trim_fs(struct super_block *sb, struct fstrim_range *range); /* dir.c */ extern int ext3_check_dir_entry(const char *, struct inode *, -- cgit v1.2.3 From 055adcbd7da75868697e767adc4f3272f6cae76c Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Tue, 23 Nov 2010 18:49:54 -0800 Subject: quota: Use %pV and __attribute__((format (printf in __quota_error and fix fallout Use %pV in __quota_error so a single printk can not be interleaved with other logging messages. Add __attribute__((format (printf, 3, 4))) so format and arguments can be verified by compiler. Make sure printk formats and arguments match. Block # needed a pointer dereference. Signed-off-by: Joe Perches Signed-off-by: Jan Kara --- include/linux/quotaops.h | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/quotaops.h b/include/linux/quotaops.h index d1a9193960f1..223b14cd129c 100644 --- a/include/linux/quotaops.h +++ b/include/linux/quotaops.h @@ -31,8 +31,9 @@ static inline bool is_quota_modification(struct inode *inode, struct iattr *ia) #define quota_error(sb, fmt, args...) \ __quota_error((sb), __func__, fmt , ## args) -extern void __quota_error(struct super_block *sb, const char *func, - const char *fmt, ...); +extern __attribute__((format (printf, 3, 4))) +void __quota_error(struct super_block *sb, const char *func, + const char *fmt, ...); /* * declaration of quota_function calls in kernel. -- cgit v1.2.3 From a4ae3094869f18e26ece25ad175bbe4cd740e60b Mon Sep 17 00:00:00 2001 From: Eric Sandeen Date: Tue, 7 Dec 2010 11:55:27 -0600 Subject: ext3: speed up file creates by optimizing rec_len functions The addition of 64k block capability in the rec_len_from_disk and rec_len_to_disk functions added a bit of math overhead which slows down file create workloads needlessly when the architecture cannot even support 64k blocks, thanks to page size limits. Similar changes already exist in the ext4 codebase. The directory entry checking can also be optimized a bit by sprinkling in some unlikely() conditions to move the error handling out of line. bonnie++ sequential file creates on a 512MB ramdisk speeds up from about 77,000/s to about 82,000/s, about a 6% improvement. Signed-off-by: Eric Sandeen Signed-off-by: Jan Kara --- include/linux/ext3_fs.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ext3_fs.h b/include/linux/ext3_fs.h index a443965946bb..65990ef612f5 100644 --- a/include/linux/ext3_fs.h +++ b/include/linux/ext3_fs.h @@ -724,21 +724,30 @@ struct ext3_dir_entry_2 { ~EXT3_DIR_ROUND) #define EXT3_MAX_REC_LEN ((1<<16)-1) +/* + * Tests against MAX_REC_LEN etc were put in place for 64k block + * sizes; if that is not possible on this arch, we can skip + * those tests and speed things up. + */ static inline unsigned ext3_rec_len_from_disk(__le16 dlen) { unsigned len = le16_to_cpu(dlen); +#if (PAGE_CACHE_SIZE >= 65536) if (len == EXT3_MAX_REC_LEN) return 1 << 16; +#endif return len; } static inline __le16 ext3_rec_len_to_disk(unsigned len) { +#if (PAGE_CACHE_SIZE >= 65536) if (len == (1 << 16)) return cpu_to_le16(EXT3_MAX_REC_LEN); else if (len > (1 << 16)) BUG(); +#endif return cpu_to_le16(len); } -- cgit v1.2.3 From d96336b05d718b03ff03c94c0dc0cc283a29d534 Mon Sep 17 00:00:00 2001 From: Josh Hunt Date: Mon, 27 Dec 2010 13:46:38 -0800 Subject: ext2: Resolve 'dereferencing pointer to incomplete type' when enabling EXT2_XATTR_DEBUG When I enable EXT2_XATTR_DEBUG in fs/ext2/xattr.c I get a build error stating the following: CC fs/ext2/xattr.o fs/ext2/xattr.c: In function 'ext2_xattr_cache_insert': fs/ext2/xattr.c:841: error: dereferencing pointer to incomplete type fs/ext2/xattr.c:846: error: dereferencing pointer to incomplete type make[2]: *** [fs/ext2/xattr.o] Error 1 make[1]: *** [fs/ext2] Error 2 make: *** [fs] Error 2 These lines reference ext2_xattr_cache->c_entry_count which is defined in struct mb_cache. struct mb_cache is currently only defined in fs/mbcache.c. Moving struct mb_cache definition to include/linux/mbcache.h to resolve the issue. Signed-off-by: Josh Hunt Signed-off-by: Jan Kara --- include/linux/mbcache.h | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mbcache.h b/include/linux/mbcache.h index 54cbbac1e71d..5525d370701d 100644 --- a/include/linux/mbcache.h +++ b/include/linux/mbcache.h @@ -18,6 +18,17 @@ struct mb_cache_entry { } e_index; }; +struct mb_cache { + struct list_head c_cache_list; + const char *c_name; + atomic_t c_entry_count; + int c_max_entries; + int c_bucket_bits; + struct kmem_cache *c_entry_cache; + struct list_head *c_block_hash; + struct list_head *c_index_hash; +}; + /* Functions on caches */ struct mb_cache *mb_cache_create(const char *, int); -- cgit v1.2.3 From 9d084a3d5dffd076a9a006164ea0dbd9c495f2b0 Mon Sep 17 00:00:00 2001 From: Fabien Marteau Date: Mon, 10 Jan 2011 11:01:13 -0800 Subject: Input: add Austria Microsystem AS5011 joystick driver This is driver for EasyPoint AS5011 2 axis joystick chip. This chip is plugged on an I2C bus. Tested on ARM processor (i.MX27). Signed-off-by: Fabien Marteau Signed-off-by: Dmitry Torokhov --- include/linux/input/as5011.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) create mode 100644 include/linux/input/as5011.h (limited to 'include/linux') diff --git a/include/linux/input/as5011.h b/include/linux/input/as5011.h new file mode 100644 index 000000000000..1affd0ddfa9d --- /dev/null +++ b/include/linux/input/as5011.h @@ -0,0 +1,20 @@ +#ifndef _AS5011_H +#define _AS5011_H + +/* + * Copyright (c) 2010, 2011 Fabien Marteau + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + */ + +struct as5011_platform_data { + unsigned int button_gpio; + unsigned int axis_irq; /* irq number */ + unsigned long axis_irqflags; + char xp, xn; /* threshold for x axis */ + char yp, yn; /* threshold for y axis */ +}; + +#endif /* _AS5011_H */ -- cgit v1.2.3 From 83723d60717f8da0f53f91cf42a845ed56c09662 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Mon, 10 Jan 2011 20:11:38 +0100 Subject: netfilter: x_tables: dont block BH while reading counters Using "iptables -L" with a lot of rules have a too big BH latency. Jesper mentioned ~6 ms and worried of frame drops. Switch to a per_cpu seqlock scheme, so that taking a snapshot of counters doesnt need to block BH (for this cpu, but also other cpus). This adds two increments on seqlock sequence per ipt_do_table() call, its a reasonable cost for allowing "iptables -L" not block BH processing. Reported-by: Jesper Dangaard Brouer Signed-off-by: Eric Dumazet CC: Patrick McHardy Acked-by: Stephen Hemminger Acked-by: Jesper Dangaard Brouer Signed-off-by: Pablo Neira Ayuso --- include/linux/netfilter/x_tables.h | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/netfilter/x_tables.h b/include/linux/netfilter/x_tables.h index 742bec051440..6712e713b299 100644 --- a/include/linux/netfilter/x_tables.h +++ b/include/linux/netfilter/x_tables.h @@ -472,7 +472,7 @@ extern void xt_free_table_info(struct xt_table_info *info); * necessary for reading the counters. */ struct xt_info_lock { - spinlock_t lock; + seqlock_t lock; unsigned char readers; }; DECLARE_PER_CPU(struct xt_info_lock, xt_info_locks); @@ -497,7 +497,7 @@ static inline void xt_info_rdlock_bh(void) local_bh_disable(); lock = &__get_cpu_var(xt_info_locks); if (likely(!lock->readers++)) - spin_lock(&lock->lock); + write_seqlock(&lock->lock); } static inline void xt_info_rdunlock_bh(void) @@ -505,7 +505,7 @@ static inline void xt_info_rdunlock_bh(void) struct xt_info_lock *lock = &__get_cpu_var(xt_info_locks); if (likely(!--lock->readers)) - spin_unlock(&lock->lock); + write_sequnlock(&lock->lock); local_bh_enable(); } @@ -516,12 +516,12 @@ static inline void xt_info_rdunlock_bh(void) */ static inline void xt_info_wrlock(unsigned int cpu) { - spin_lock(&per_cpu(xt_info_locks, cpu).lock); + write_seqlock(&per_cpu(xt_info_locks, cpu).lock); } static inline void xt_info_wrunlock(unsigned int cpu) { - spin_unlock(&per_cpu(xt_info_locks, cpu).lock); + write_sequnlock(&per_cpu(xt_info_locks, cpu).lock); } /* -- cgit v1.2.3 From 6650239a4b01077e80d5a4468562756d77afaa59 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Sat, 8 Jan 2011 17:45:38 -0500 Subject: NFS: Don't use vm_map_ram() in readdir vm_map_ram() is not available on NOMMU platforms, and causes trouble on incoherrent architectures such as ARM when we access the page data through both the direct and the virtual mapping. The alternative is to use the direct mapping to access page data for the case when we are not crossing a page boundary, but to copy the data into a linear scratch buffer when we are accessing data that spans page boundaries. Signed-off-by: Trond Myklebust Tested-by: Marc Kleine-Budde Cc: stable@kernel.org [2.6.37] --- include/linux/sunrpc/xdr.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/sunrpc/xdr.h b/include/linux/sunrpc/xdr.h index 498ab93a81e4..7783c687c777 100644 --- a/include/linux/sunrpc/xdr.h +++ b/include/linux/sunrpc/xdr.h @@ -201,6 +201,8 @@ struct xdr_stream { __be32 *end; /* end of available buffer space */ struct kvec *iov; /* pointer to the current kvec */ + struct kvec scratch; /* Scratch buffer */ + struct page **page_ptr; /* pointer to the current page */ }; extern void xdr_init_encode(struct xdr_stream *xdr, struct xdr_buf *buf, __be32 *p); @@ -208,7 +210,7 @@ extern __be32 *xdr_reserve_space(struct xdr_stream *xdr, size_t nbytes); extern void xdr_write_pages(struct xdr_stream *xdr, struct page **pages, unsigned int base, unsigned int len); extern void xdr_init_decode(struct xdr_stream *xdr, struct xdr_buf *buf, __be32 *p); -extern __be32 *xdr_inline_peek(struct xdr_stream *xdr, size_t nbytes); +extern void xdr_set_scratch_buffer(struct xdr_stream *xdr, void *buf, size_t buflen); extern __be32 *xdr_inline_decode(struct xdr_stream *xdr, size_t nbytes); extern void xdr_read_pages(struct xdr_stream *xdr, unsigned int len); extern void xdr_enter_page(struct xdr_stream *xdr, unsigned int len); -- cgit v1.2.3 From 45007fd590c6b099cec5d36ea7056b00f8b4916a Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Thu, 6 Jan 2011 22:36:46 +0100 Subject: nl80211: add/fix mesh docs Some mesh attribute/command docs are missing or have errors in the name so they don't match, fix all of them. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- include/linux/nl80211.h | 20 +++++++++++++++----- 1 file changed, 15 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index 2b89b712565b..821ffb954f14 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -148,6 +148,10 @@ * @NL80211_CMD_SET_MPATH: Set mesh path attributes for mesh path to * destination %NL80211_ATTR_MAC on the interface identified by * %NL80211_ATTR_IFINDEX. + * @NL80211_CMD_NEW_MPATH: Create a new mesh path for the destination given by + * %NL80211_ATTR_MAC via %NL80211_ATTR_MPATH_NEXT_HOP. + * @NL80211_CMD_DEL_MPATH: Delete a mesh path to the destination given by + * %NL80211_ATTR_MAC. * @NL80211_CMD_NEW_PATH: Add a mesh path with given attributes to the * the interface identified by %NL80211_ATTR_IFINDEX. * @NL80211_CMD_DEL_PATH: Remove a mesh path identified by %NL80211_ATTR_MAC @@ -612,7 +616,7 @@ enum nl80211_commands { * consisting of a nested array. * * @NL80211_ATTR_MESH_ID: mesh id (1-32 bytes). - * @NL80211_ATTR_PLINK_ACTION: action to perform on the mesh peer link. + * @NL80211_ATTR_STA_PLINK_ACTION: action to perform on the mesh peer link. * @NL80211_ATTR_MPATH_NEXT_HOP: MAC address of the next hop for a mesh path. * @NL80211_ATTR_MPATH_INFO: information about a mesh_path, part of mesh path * info given for %NL80211_CMD_GET_MPATH, nested attribute described at @@ -879,7 +883,9 @@ enum nl80211_commands { * See &enum nl80211_key_default_types. * * @NL80211_ATTR_MESH_SETUP: Optional mesh setup parameters. These cannot be - * changed once the mesh is active. + * changed once the mesh is active. + * @NL80211_ATTR_MESH_CONFIG: Mesh configuration parameters, a nested attribute + * containing attributes from &enum nl80211_meshconf_params. * * @NL80211_ATTR_MAX: highest attribute number currently defined * @__NL80211_ATTR_AFTER_LAST: internal use @@ -1225,8 +1231,6 @@ enum nl80211_rate_info { * @NL80211_STA_INFO_INACTIVE_TIME: time since last activity (u32, msecs) * @NL80211_STA_INFO_RX_BYTES: total received bytes (u32, from this station) * @NL80211_STA_INFO_TX_BYTES: total transmitted bytes (u32, to this station) - * @__NL80211_STA_INFO_AFTER_LAST: internal - * @NL80211_STA_INFO_MAX: highest possible station info attribute * @NL80211_STA_INFO_SIGNAL: signal strength of last received PPDU (u8, dBm) * @NL80211_STA_INFO_TX_BITRATE: current unicast tx rate, nested attribute * containing info as possible, see &enum nl80211_sta_info_txrate. @@ -1236,6 +1240,11 @@ enum nl80211_rate_info { * @NL80211_STA_INFO_TX_RETRIES: total retries (u32, to this station) * @NL80211_STA_INFO_TX_FAILED: total failed packets (u32, to this station) * @NL80211_STA_INFO_SIGNAL_AVG: signal strength average (u8, dBm) + * @NL80211_STA_INFO_LLID: the station's mesh LLID + * @NL80211_STA_INFO_PLID: the station's mesh PLID + * @NL80211_STA_INFO_PLINK_STATE: peer link state for the station + * @__NL80211_STA_INFO_AFTER_LAST: internal + * @NL80211_STA_INFO_MAX: highest possible station info attribute */ enum nl80211_sta_info { __NL80211_STA_INFO_INVALID, @@ -1626,7 +1635,7 @@ enum nl80211_mntr_flags { * @NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME: The interval of time (in TUs) * that it takes for an HWMP information element to propagate across the mesh * - * @NL80211_MESHCONF_ROOTMODE: whether root mode is enabled or not + * @NL80211_MESHCONF_HWMP_ROOTMODE: whether root mode is enabled or not * * @NL80211_MESHCONF_ELEMENT_TTL: specifies the value of TTL field set at a * source mesh point for path selection elements. @@ -1678,6 +1687,7 @@ enum nl80211_meshconf_params { * element that vendors will use to identify the path selection methods and * metrics in use. * + * @NL80211_MESH_SETUP_ATTR_MAX: highest possible mesh setup attribute number * @__NL80211_MESH_SETUP_ATTR_AFTER_LAST: Internal use */ enum nl80211_mesh_setup_params { -- cgit v1.2.3 From 92ed1a76ca31774eb27de14b2215841367c68056 Mon Sep 17 00:00:00 2001 From: Peter Korsgaard Date: Mon, 10 Jan 2011 22:11:23 +0100 Subject: i2c: Add generic I2C multiplexer using GPIO API Add an i2c mux driver providing access to i2c bus segments using a hardware MUX sitting on a master bus and controlled through gpio pins. E.G. something like: ---------- ---------- Bus segment 1 - - - - - | | SCL/SDA | |-------------- | | | |------------| | | | | | Bus segment 2 | | | Linux | GPIO 1..N | MUX |--------------- Devices | |------------| | | | | | | | Bus segment M | | | |---------------| | ---------- ---------- - - - - - SCL/SDA of the master I2C bus is multiplexed to bus segment 1..M according to the settings of the GPIO pins 1..N. Signed-off-by: Peter Korsgaard Signed-off-by: Jean Delvare --- include/linux/gpio-i2cmux.h | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 include/linux/gpio-i2cmux.h (limited to 'include/linux') diff --git a/include/linux/gpio-i2cmux.h b/include/linux/gpio-i2cmux.h new file mode 100644 index 000000000000..4a333bb0bd0d --- /dev/null +++ b/include/linux/gpio-i2cmux.h @@ -0,0 +1,38 @@ +/* + * gpio-i2cmux interface to platform code + * + * Peter Korsgaard + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef _LINUX_GPIO_I2CMUX_H +#define _LINUX_GPIO_I2CMUX_H + +/* MUX has no specific idle mode */ +#define GPIO_I2CMUX_NO_IDLE ((unsigned)-1) + +/** + * struct gpio_i2cmux_platform_data - Platform-dependent data for gpio-i2cmux + * @parent: Parent I2C bus adapter number + * @base_nr: Base I2C bus number to number adapters from or zero for dynamic + * @values: Array of bitmasks of GPIO settings (low/high) for each + * position + * @n_values: Number of multiplexer positions (busses to instantiate) + * @gpios: Array of GPIO numbers used to control MUX + * @n_gpios: Number of GPIOs used to control MUX + * @idle: Bitmask to write to MUX when idle or GPIO_I2CMUX_NO_IDLE if not used + */ +struct gpio_i2cmux_platform_data { + int parent; + int base_nr; + const unsigned *values; + int n_values; + const unsigned *gpios; + int n_gpios; + unsigned idle; +}; + +#endif /* _LINUX_GPIO_I2CMUX_H */ -- cgit v1.2.3 From 0cc43a1806f078f7fd414850d8f1f1761696e4af Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Mon, 10 Jan 2011 22:11:23 +0100 Subject: i2c: Constify i2c_client where possible Helper functions for I2C and SMBus transactions don't modify the i2c_client that is passed to them, so it can be marked const. Signed-off-by: Jean Delvare --- include/linux/i2c.h | 27 +++++++++++++++------------ 1 file changed, 15 insertions(+), 12 deletions(-) (limited to 'include/linux') diff --git a/include/linux/i2c.h b/include/linux/i2c.h index 56cfe23ffb39..903576df88dc 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -57,9 +57,10 @@ struct i2c_board_info; * transmit an arbitrary number of messages without interruption. * @count must be be less than 64k since msg.len is u16. */ -extern int i2c_master_send(struct i2c_client *client, const char *buf, +extern int i2c_master_send(const struct i2c_client *client, const char *buf, + int count); +extern int i2c_master_recv(const struct i2c_client *client, char *buf, int count); -extern int i2c_master_recv(struct i2c_client *client, char *buf, int count); /* Transfer num messages. */ @@ -78,23 +79,25 @@ extern s32 i2c_smbus_xfer(struct i2c_adapter *adapter, u16 addr, /* Now follow the 'nice' access routines. These also document the calling conventions of i2c_smbus_xfer. */ -extern s32 i2c_smbus_read_byte(struct i2c_client *client); -extern s32 i2c_smbus_write_byte(struct i2c_client *client, u8 value); -extern s32 i2c_smbus_read_byte_data(struct i2c_client *client, u8 command); -extern s32 i2c_smbus_write_byte_data(struct i2c_client *client, +extern s32 i2c_smbus_read_byte(const struct i2c_client *client); +extern s32 i2c_smbus_write_byte(const struct i2c_client *client, u8 value); +extern s32 i2c_smbus_read_byte_data(const struct i2c_client *client, + u8 command); +extern s32 i2c_smbus_write_byte_data(const struct i2c_client *client, u8 command, u8 value); -extern s32 i2c_smbus_read_word_data(struct i2c_client *client, u8 command); -extern s32 i2c_smbus_write_word_data(struct i2c_client *client, +extern s32 i2c_smbus_read_word_data(const struct i2c_client *client, + u8 command); +extern s32 i2c_smbus_write_word_data(const struct i2c_client *client, u8 command, u16 value); /* Returns the number of read bytes */ -extern s32 i2c_smbus_read_block_data(struct i2c_client *client, +extern s32 i2c_smbus_read_block_data(const struct i2c_client *client, u8 command, u8 *values); -extern s32 i2c_smbus_write_block_data(struct i2c_client *client, +extern s32 i2c_smbus_write_block_data(const struct i2c_client *client, u8 command, u8 length, const u8 *values); /* Returns the number of read bytes */ -extern s32 i2c_smbus_read_i2c_block_data(struct i2c_client *client, +extern s32 i2c_smbus_read_i2c_block_data(const struct i2c_client *client, u8 command, u8 length, u8 *values); -extern s32 i2c_smbus_write_i2c_block_data(struct i2c_client *client, +extern s32 i2c_smbus_write_i2c_block_data(const struct i2c_client *client, u8 command, u8 length, const u8 *values); #endif /* I2C */ -- cgit v1.2.3 From c599bd6b9ac8926b03e6bf332a8c14ae2ffb43a3 Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Mon, 10 Jan 2011 02:54:32 +0000 Subject: netdev: bfin_mac: let boards set vlan masks Signed-off-by: Mike Frysinger Signed-off-by: David S. Miller --- include/linux/bfin_mac.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/bfin_mac.h b/include/linux/bfin_mac.h index 904dec7d03a1..a69554ef8476 100644 --- a/include/linux/bfin_mac.h +++ b/include/linux/bfin_mac.h @@ -24,6 +24,7 @@ struct bfin_mii_bus_platform_data { const unsigned short *mac_peripherals; int phy_mode; unsigned int phy_mask; + unsigned short vlan1_mask, vlan2_mask; }; #endif -- cgit v1.2.3 From 36909ea43814cba34f7c921e99cba33d770a54e1 Mon Sep 17 00:00:00 2001 From: Tom Herbert Date: Sun, 9 Jan 2011 19:36:31 +0000 Subject: net: Add alloc_netdev_mqs function Added alloc_netdev_mqs function which allows the number of transmit and receive queues to be specified independenty. alloc_netdev_mq was changed to a macro to call the new function. Also added alloc_etherdev_mqs with same purpose. Signed-off-by: Tom Herbert Signed-off-by: David S. Miller --- include/linux/etherdevice.h | 4 +++- include/linux/netdevice.h | 10 +++++++--- 2 files changed, 10 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/etherdevice.h b/include/linux/etherdevice.h index f16a01081e15..bec8b82889bf 100644 --- a/include/linux/etherdevice.h +++ b/include/linux/etherdevice.h @@ -48,8 +48,10 @@ extern int eth_validate_addr(struct net_device *dev); -extern struct net_device *alloc_etherdev_mq(int sizeof_priv, unsigned int queue_count); +extern struct net_device *alloc_etherdev_mqs(int sizeof_priv, unsigned int txqs, + unsigned int rxqs); #define alloc_etherdev(sizeof_priv) alloc_etherdev_mq(sizeof_priv, 1) +#define alloc_etherdev_mq(sizeof_priv, count) alloc_etherdev_mqs(sizeof_priv, count, count) /** * is_zero_ether_addr - Determine if give Ethernet address is all zeros. diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index de2bfe6da359..be4957cf6511 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -2191,11 +2191,15 @@ static inline void netif_addr_unlock_bh(struct net_device *dev) extern void ether_setup(struct net_device *dev); /* Support for loadable net-drivers */ -extern struct net_device *alloc_netdev_mq(int sizeof_priv, const char *name, +extern struct net_device *alloc_netdev_mqs(int sizeof_priv, const char *name, void (*setup)(struct net_device *), - unsigned int queue_count); + unsigned int txqs, unsigned int rxqs); #define alloc_netdev(sizeof_priv, name, setup) \ - alloc_netdev_mq(sizeof_priv, name, setup, 1) + alloc_netdev_mqs(sizeof_priv, name, setup, 1, 1) + +#define alloc_netdev_mq(sizeof_priv, name, setup, count) \ + alloc_netdev_mqs(sizeof_priv, name, setup, count, count) + extern int register_netdev(struct net_device *dev); extern void unregister_netdev(struct net_device *dev); -- cgit v1.2.3 From e159489baa717dbae70f9903770a6a4990865887 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Sun, 9 Jan 2011 23:32:15 +0100 Subject: workqueue: relax lockdep annotation on flush_work() Currently, the lockdep annotation in flush_work() requires exclusive access on the workqueue the target work is queued on and triggers warning if a work is trying to flush another work on the same workqueue; however, this is no longer true as workqueues can now execute multiple works concurrently. This patch adds lock_map_acquire_read() and make process_one_work() hold read access to the workqueue while executing a work and start_flush_work() check for write access if concurrnecy level is one or the workqueue has a rescuer (as only one execution resource - the rescuer - is guaranteed to be available under memory pressure), and read access if higher. This better represents what's going on and removes spurious lockdep warnings which are triggered by fake dependency chain created through flush_work(). * Peter pointed out that flushing another work from a WQ_MEM_RECLAIM wq breaks forward progress guarantee under memory pressure. Condition check accordingly updated. Signed-off-by: Tejun Heo Reported-by: "Rafael J. Wysocki" Tested-by: "Rafael J. Wysocki" Cc: Peter Zijlstra Cc: stable@kernel.org --- include/linux/lockdep.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h index 71c09b26c759..9f19430c7d07 100644 --- a/include/linux/lockdep.h +++ b/include/linux/lockdep.h @@ -522,12 +522,15 @@ static inline void print_irqtrace_events(struct task_struct *curr) #ifdef CONFIG_DEBUG_LOCK_ALLOC # ifdef CONFIG_PROVE_LOCKING # define lock_map_acquire(l) lock_acquire(l, 0, 0, 0, 2, NULL, _THIS_IP_) +# define lock_map_acquire_read(l) lock_acquire(l, 0, 0, 2, 2, NULL, _THIS_IP_) # else # define lock_map_acquire(l) lock_acquire(l, 0, 0, 0, 1, NULL, _THIS_IP_) +# define lock_map_acquire_read(l) lock_acquire(l, 0, 0, 2, 1, NULL, _THIS_IP_) # endif # define lock_map_release(l) lock_release(l, 1, _THIS_IP_) #else # define lock_map_acquire(l) do { } while (0) +# define lock_map_acquire_read(l) do { } while (0) # define lock_map_release(l) do { } while (0) #endif -- cgit v1.2.3 From 925268a06dc2b1ff7bfcc37419a6827a0e739639 Mon Sep 17 00:00:00 2001 From: KAMEZAWA Hiroyuki Date: Tue, 11 Jan 2011 16:44:01 +0900 Subject: memory hotplug: one more lock on memory hotplug Now, memory_hotplug_(un)lock() is used for add/remove/offline pages for avoiding races with hibernation. But this should be held in online_pages(), too. It seems asymmetric. There are cases where one has to avoid a race with memory hotplug notifier and his own local code, and hotplug v.s. hotplug. This will add a generic solution for avoiding races. In other view, having lock here has no big impacts. online pages is tend to be done by udev script at el against each memory section one by one. Then, it's better to have lock here, too. Cc: # 2.6.37 Reviewed-by: Christoph Lameter Acked-by: David Rientjes Signed-off-by: KAMEZAWA Hiroyuki Signed-off-by: Pekka Enberg --- include/linux/memory_hotplug.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h index 31c237a00c48..12b9eb5a36c3 100644 --- a/include/linux/memory_hotplug.h +++ b/include/linux/memory_hotplug.h @@ -161,6 +161,12 @@ extern void register_page_bootmem_info_node(struct pglist_data *pgdat); extern void put_page_bootmem(struct page *page); #endif +/* + * Lock for memory hotplug guarantees 1) all callbacks for memory hotplug + * notifier will be called under this. 2) offline/online/add/remove memory + * will not run simultaneously. + */ + void lock_memory_hotplug(void); void unlock_memory_hotplug(void); -- cgit v1.2.3 From 357f54d6b38252737116a6d631f6ac28ded018ed Mon Sep 17 00:00:00 2001 From: Andy Adamson Date: Tue, 14 Dec 2010 10:11:57 -0500 Subject: NFS fix the setting of exchange id flag Indicate support for referrals. Do not set any PNFS roles. Check the flags returned by the server for validity. Do not use exchange flags from an old client ID instance when recovering a client ID. Update the EXCHID4_FLAG_XXX set to RFC 5661. Signed-off-by: Andy Adamson Signed-off-by: Trond Myklebust --- include/linux/nfs4.h | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/nfs4.h b/include/linux/nfs4.h index 4925b22219d2..9b46300b4305 100644 --- a/include/linux/nfs4.h +++ b/include/linux/nfs4.h @@ -111,9 +111,13 @@ #define EXCHGID4_FLAG_SUPP_MOVED_REFER 0x00000001 #define EXCHGID4_FLAG_SUPP_MOVED_MIGR 0x00000002 +#define EXCHGID4_FLAG_BIND_PRINC_STATEID 0x00000100 + #define EXCHGID4_FLAG_USE_NON_PNFS 0x00010000 #define EXCHGID4_FLAG_USE_PNFS_MDS 0x00020000 #define EXCHGID4_FLAG_USE_PNFS_DS 0x00040000 +#define EXCHGID4_FLAG_MASK_PNFS 0x00070000 + #define EXCHGID4_FLAG_UPD_CONFIRMED_REC_A 0x40000000 #define EXCHGID4_FLAG_CONFIRMED_R 0x80000000 /* @@ -121,8 +125,8 @@ * they're set in the argument or response, have separate * invalid flag masks for arg (_A) and resp (_R). */ -#define EXCHGID4_FLAG_MASK_A 0x40070003 -#define EXCHGID4_FLAG_MASK_R 0x80070003 +#define EXCHGID4_FLAG_MASK_A 0x40070103 +#define EXCHGID4_FLAG_MASK_R 0x80070103 #define SEQ4_STATUS_CB_PATH_DOWN 0x00000001 #define SEQ4_STATUS_CB_GSS_CONTEXTS_EXPIRING 0x00000002 -- cgit v1.2.3 From 1d1bc8f2074f0b728dfca2a3c16f2f5a3f298ffc Mon Sep 17 00:00:00 2001 From: "J. Bruce Fields" Date: Mon, 4 Oct 2010 23:12:59 -0400 Subject: nfsd4: support BIND_CONN_TO_SESSION Basic xdr and processing for BIND_CONN_TO_SESSION. This adds a connection to the list of connections associated with a session. Signed-off-by: J. Bruce Fields --- include/linux/nfs4.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nfs4.h b/include/linux/nfs4.h index 26afa3021ed6..a5918938e41e 100644 --- a/include/linux/nfs4.h +++ b/include/linux/nfs4.h @@ -65,6 +65,9 @@ #define NFS4_CDFC4_FORE 0x1 #define NFS4_CDFC4_BACK 0x2 +#define NFS4_CDFC4_BOTH 0x3 +#define NFS4_CDFC4_FORE_OR_BOTH 0x3 +#define NFS4_CDFC4_BACK_OR_BOTH 0x7 #define NFS4_SET_TO_SERVER_TIME 0 #define NFS4_SET_TO_CLIENT_TIME 1 -- cgit v1.2.3 From d75faea330dbd1873c9094e9926ae306590c0998 Mon Sep 17 00:00:00 2001 From: "J. Bruce Fields" Date: Tue, 30 Nov 2010 19:15:01 -0500 Subject: rpc: move sk_bc_xprt to svc_xprt This seems obviously transport-level information even if it's currently used only by the server socket code. Signed-off-by: J. Bruce Fields --- include/linux/sunrpc/svc_xprt.h | 1 + include/linux/sunrpc/svcsock.h | 1 - 2 files changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/sunrpc/svc_xprt.h b/include/linux/sunrpc/svc_xprt.h index c8f81da15c7e..7ad9751a0d87 100644 --- a/include/linux/sunrpc/svc_xprt.h +++ b/include/linux/sunrpc/svc_xprt.h @@ -79,6 +79,7 @@ struct svc_xprt { struct list_head xpt_users; /* callbacks on free */ struct net *xpt_net; + struct rpc_xprt *xpt_bc_xprt; /* NFSv4.1 backchannel */ }; static inline void unregister_xpt_user(struct svc_xprt *xpt, struct svc_xpt_user *u) diff --git a/include/linux/sunrpc/svcsock.h b/include/linux/sunrpc/svcsock.h index 1b353a76c304..04dba23c59f2 100644 --- a/include/linux/sunrpc/svcsock.h +++ b/include/linux/sunrpc/svcsock.h @@ -28,7 +28,6 @@ struct svc_sock { /* private TCP part */ u32 sk_reclen; /* length of record */ u32 sk_tcplen; /* current read length */ - struct rpc_xprt *sk_bc_xprt; /* NFSv4.1 backchannel xprt */ }; /* -- cgit v1.2.3 From f0418aa4b1103f959d64dc18273efa04ee0140e9 Mon Sep 17 00:00:00 2001 From: "J. Bruce Fields" Date: Wed, 8 Dec 2010 13:48:19 -0500 Subject: rpc: allow xprt_class->setup to return a preexisting xprt This allows us to reuse the xprt associated with a server connection if one has already been set up. Signed-off-by: J. Bruce Fields --- include/linux/sunrpc/xprt.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/sunrpc/xprt.h b/include/linux/sunrpc/xprt.h index 89d10d279a20..bef0f535f746 100644 --- a/include/linux/sunrpc/xprt.h +++ b/include/linux/sunrpc/xprt.h @@ -321,6 +321,7 @@ void xprt_conditional_disconnect(struct rpc_xprt *xprt, unsigned int cookie); #define XPRT_CLOSING (6) #define XPRT_CONNECTION_ABORT (7) #define XPRT_CONNECTION_CLOSE (8) +#define XPRT_INITIALIZED (9) static inline void xprt_set_connected(struct rpc_xprt *xprt) { -- cgit v1.2.3 From 0d2689c0f054f6a8bf3115d6386bd9c2d65dc44b Mon Sep 17 00:00:00 2001 From: Benjamin Tissoires Date: Fri, 7 Jan 2011 23:44:32 +0100 Subject: HID: add feature_mapping callback Currently hid doesn't export the features it knows to the specific modules. Some information can be really important in such features: MosArt and Cypress devices are by default not in a multitouch mode. We have to send the value 2 on the right feature. This patch exports to the module the features report so they can find the right feature to set up the correct mode. Signed-off-by: Benjamin Tissoires Acked-by: Henrik Rydberg Signed-off-by: Jiri Kosina --- include/linux/hid.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/hid.h b/include/linux/hid.h index bb0f56f5c01e..96bd7920a01a 100644 --- a/include/linux/hid.h +++ b/include/linux/hid.h @@ -593,6 +593,7 @@ struct hid_usage_id { * @report_fixup: called before report descriptor parsing (NULL means nop) * @input_mapping: invoked on input registering before mapping an usage * @input_mapped: invoked on input registering after mapping an usage + * @feature_mapping: invoked on feature registering * @suspend: invoked on suspend (NULL means nop) * @resume: invoked on resume if device was not reset (NULL means nop) * @reset_resume: invoked on resume if device was reset (NULL means nop) @@ -636,6 +637,9 @@ struct hid_driver { int (*input_mapped)(struct hid_device *hdev, struct hid_input *hidinput, struct hid_field *field, struct hid_usage *usage, unsigned long **bit, int *max); + void (*feature_mapping)(struct hid_device *hdev, + struct hid_input *hidinput, struct hid_field *field, + struct hid_usage *usage); #ifdef CONFIG_PM int (*suspend)(struct hid_device *hdev, pm_message_t message); int (*resume)(struct hid_device *hdev); -- cgit v1.2.3 From 281054ac8dfc083442c571be44f1c5b9821812ae Mon Sep 17 00:00:00 2001 From: Benjamin Tissoires Date: Fri, 7 Jan 2011 23:45:11 +0100 Subject: HID: set HID_MAX_FIELD at 128 Stantums multitouch panels sends more than 64 reports and this results in not being able to handle all the touches given by this device. This patch is required to be able to include Stantum panels in the unified hid-multitouch driver. Signed-off-by: Benjamin Tissoires Acked-by: Henrik Rydberg Signed-off-by: Jiri Kosina --- include/linux/hid.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/hid.h b/include/linux/hid.h index 96bd7920a01a..1ebc6e39f20d 100644 --- a/include/linux/hid.h +++ b/include/linux/hid.h @@ -402,7 +402,7 @@ struct hid_field { __u16 dpad; /* dpad input code */ }; -#define HID_MAX_FIELDS 64 +#define HID_MAX_FIELDS 128 struct hid_report { struct list_head list; -- cgit v1.2.3 From 2f46e07995734a363608e974a82fd05d5b610750 Mon Sep 17 00:00:00 2001 From: Florian Westphal Date: Tue, 11 Jan 2011 23:55:51 +0100 Subject: netfilter: ebtables: make broute table work again broute table init hook sets up the "br_should_route_hook" pointer, which then gets called from br_input. commit a386f99025f13b32502fe5dedf223c20d7283826 (bridge: add proper RCU annotation to should_route_hook) introduced a typedef, and then changed this to: br_should_route_hook_t *rhook; [..] rhook = rcu_dereference(br_should_route_hook); if (*rhook(skb)) problem is that "br_should_route_hook" contains the address of the function, so calling *rhook() results in kernel panic. Signed-off-by: Florian Westphal Acked-by: Eric Dumazet Signed-off-by: Pablo Neira Ayuso --- include/linux/if_bridge.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/if_bridge.h b/include/linux/if_bridge.h index f7e73c338c40..dd3f20139640 100644 --- a/include/linux/if_bridge.h +++ b/include/linux/if_bridge.h @@ -103,7 +103,7 @@ struct __fdb_entry { extern void brioctl_set(int (*ioctl_hook)(struct net *, unsigned int, void __user *)); -typedef int (*br_should_route_hook_t)(struct sk_buff *skb); +typedef int br_should_route_hook_t(struct sk_buff *skb); extern br_should_route_hook_t __rcu *br_should_route_hook; #endif -- cgit v1.2.3 From 4cb18728709683c91a5f6f8d5f337bfb498b089a Mon Sep 17 00:00:00 2001 From: "R.Durgadoss" Date: Wed, 27 Oct 2010 03:33:29 +0530 Subject: thermal: Add event notification to thermal framework This patch adds event notification support to the generic thermal sysfs framework in the kernel. The notification is in the form of a netlink event. Signed-off-by: R.Durgadoss Signed-off-by: Len Brown --- include/linux/thermal.h | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) (limited to 'include/linux') diff --git a/include/linux/thermal.h b/include/linux/thermal.h index 1de8b9eb841b..784644961279 100644 --- a/include/linux/thermal.h +++ b/include/linux/thermal.h @@ -127,6 +127,37 @@ struct thermal_zone_device { struct thermal_hwmon_attr temp_crit; /* hwmon sys attr */ #endif }; +/* Adding event notification support elements */ +#define THERMAL_GENL_FAMILY_NAME "thermal_event" +#define THERMAL_GENL_VERSION 0x01 +#define THERMAL_GENL_MCAST_GROUP_NAME "thermal_mc_group" + +enum events { + THERMAL_AUX0, + THERMAL_AUX1, + THERMAL_CRITICAL, + THERMAL_DEV_FAULT, +}; + +struct thermal_genl_event { + u32 orig; + enum events event; +}; +/* attributes of thermal_genl_family */ +enum { + THERMAL_GENL_ATTR_UNSPEC, + THERMAL_GENL_ATTR_EVENT, + __THERMAL_GENL_ATTR_MAX, +}; +#define THERMAL_GENL_ATTR_MAX (__THERMAL_GENL_ATTR_MAX - 1) + +/* commands supported by the thermal_genl_family */ +enum { + THERMAL_GENL_CMD_UNSPEC, + THERMAL_GENL_CMD_EVENT, + __THERMAL_GENL_CMD_MAX, +}; +#define THERMAL_GENL_CMD_MAX (__THERMAL_GENL_CMD_MAX - 1) struct thermal_zone_device *thermal_zone_device_register(char *, int, void *, struct @@ -146,5 +177,6 @@ struct thermal_cooling_device *thermal_cooling_device_register(char *, void *, thermal_cooling_device_ops *); void thermal_cooling_device_unregister(struct thermal_cooling_device *); +extern int generate_netlink_event(u32 orig, enum events event); #endif /* __THERMAL_H__ */ -- cgit v1.2.3 From 50a88cb7eddb971077ae7dff76b116747c12c371 Mon Sep 17 00:00:00 2001 From: Jekyll Lai Date: Tue, 11 Jan 2011 21:53:55 -0800 Subject: Input: add SW_ROTATE_LOCK switch type This switch is used to signal that user want to disable screen transitions from portrait to landscape mode and back. Signed-off-by: Jekyll Lai Signed-off-by: Alan Cox Signed-off-by: Dmitry Torokhov --- include/linux/input.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/input.h b/include/linux/input.h index 6c407e553a40..4bdacada8d2a 100644 --- a/include/linux/input.h +++ b/include/linux/input.h @@ -775,6 +775,7 @@ struct input_keymap_entry { #define SW_CAMERA_LENS_COVER 0x09 /* set = lens covered */ #define SW_KEYPAD_SLIDE 0x0a /* set = keypad slide out */ #define SW_FRONT_PROXIMITY 0x0b /* set = front proximity sensor active */ +#define SW_ROTATE_LOCK 0x0c /* set = rotate locked/disabled */ #define SW_MAX 0x0f #define SW_CNT (SW_MAX+1) -- cgit v1.2.3 From af585b921e5d1e919947c4b1164b59507fe7cd7b Mon Sep 17 00:00:00 2001 From: Gleb Natapov Date: Thu, 14 Oct 2010 11:22:46 +0200 Subject: KVM: Halt vcpu if page it tries to access is swapped out If a guest accesses swapped out memory do not swap it in from vcpu thread context. Schedule work to do swapping and put vcpu into halted state instead. Interrupts will still be delivered to the guest and if interrupt will cause reschedule guest will continue to run another task. [avi: remove call to get_user_pages_noio(), nacked by Linus; this makes everything synchrnous again] Acked-by: Rik van Riel Signed-off-by: Gleb Natapov Signed-off-by: Marcelo Tosatti --- include/linux/kvm_host.h | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) (limited to 'include/linux') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index a0557422715e..e56acc7857e2 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -40,6 +40,7 @@ #define KVM_REQ_KICK 9 #define KVM_REQ_DEACTIVATE_FPU 10 #define KVM_REQ_EVENT 11 +#define KVM_REQ_APF_HALT 12 #define KVM_USERSPACE_IRQ_SOURCE_ID 0 @@ -74,6 +75,26 @@ int kvm_io_bus_register_dev(struct kvm *kvm, enum kvm_bus bus_idx, int kvm_io_bus_unregister_dev(struct kvm *kvm, enum kvm_bus bus_idx, struct kvm_io_device *dev); +#ifdef CONFIG_KVM_ASYNC_PF +struct kvm_async_pf { + struct work_struct work; + struct list_head link; + struct list_head queue; + struct kvm_vcpu *vcpu; + struct mm_struct *mm; + gva_t gva; + unsigned long addr; + struct kvm_arch_async_pf arch; + struct page *page; + bool done; +}; + +void kvm_clear_async_pf_completion_queue(struct kvm_vcpu *vcpu); +void kvm_check_async_pf_completion(struct kvm_vcpu *vcpu); +int kvm_setup_async_pf(struct kvm_vcpu *vcpu, gva_t gva, gfn_t gfn, + struct kvm_arch_async_pf *arch); +#endif + struct kvm_vcpu { struct kvm *kvm; #ifdef CONFIG_PREEMPT_NOTIFIERS @@ -104,6 +125,15 @@ struct kvm_vcpu { gpa_t mmio_phys_addr; #endif +#ifdef CONFIG_KVM_ASYNC_PF + struct { + u32 queued; + struct list_head queue; + struct list_head done; + spinlock_t lock; + } async_pf; +#endif + struct kvm_vcpu_arch arch; }; @@ -302,6 +332,7 @@ void kvm_set_page_accessed(struct page *page); pfn_t hva_to_pfn_atomic(struct kvm *kvm, unsigned long addr); pfn_t gfn_to_pfn_atomic(struct kvm *kvm, gfn_t gfn); +pfn_t gfn_to_pfn_async(struct kvm *kvm, gfn_t gfn, bool *async); pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn); pfn_t gfn_to_pfn_memslot(struct kvm *kvm, struct kvm_memory_slot *slot, gfn_t gfn); -- cgit v1.2.3 From 49c7754ce57063b819b01eb8a4290841ad0886c4 Mon Sep 17 00:00:00 2001 From: Gleb Natapov Date: Mon, 18 Oct 2010 15:22:23 +0200 Subject: KVM: Add memory slot versioning and use it to provide fast guest write interface Keep track of memslots changes by keeping generation number in memslots structure. Provide kvm_write_guest_cached() function that skips gfn_to_hva() translation if memslots was not changed since previous invocation. Acked-by: Rik van Riel Signed-off-by: Gleb Natapov Signed-off-by: Marcelo Tosatti --- include/linux/kvm_host.h | 7 +++++++ include/linux/kvm_types.h | 7 +++++++ 2 files changed, 14 insertions(+) (limited to 'include/linux') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index e56acc7857e2..e6748204cd56 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -199,6 +199,7 @@ struct kvm_irq_routing_table {}; struct kvm_memslots { int nmemslots; + u64 generation; struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS]; }; @@ -352,12 +353,18 @@ int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data, int offset, int len); int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data, unsigned long len); +int kvm_write_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, + void *data, unsigned long len); +int kvm_gfn_to_hva_cache_init(struct kvm *kvm, struct gfn_to_hva_cache *ghc, + gpa_t gpa); int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len); int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len); struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn); int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn); unsigned long kvm_host_page_size(struct kvm *kvm, gfn_t gfn); void mark_page_dirty(struct kvm *kvm, gfn_t gfn); +void mark_page_dirty_in_slot(struct kvm *kvm, struct kvm_memory_slot *memslot, + gfn_t gfn); void kvm_vcpu_block(struct kvm_vcpu *vcpu); void kvm_vcpu_on_spin(struct kvm_vcpu *vcpu); diff --git a/include/linux/kvm_types.h b/include/linux/kvm_types.h index 7ac0d4eee430..fa7cc7244cbd 100644 --- a/include/linux/kvm_types.h +++ b/include/linux/kvm_types.h @@ -67,4 +67,11 @@ struct kvm_lapic_irq { u32 dest_id; }; +struct gfn_to_hva_cache { + u64 generation; + gpa_t gpa; + unsigned long hva; + struct kvm_memory_slot *memslot; +}; + #endif /* __KVM_TYPES_H__ */ -- cgit v1.2.3 From 344d9588a9df06182684168be4f1408b55c7da3e Mon Sep 17 00:00:00 2001 From: Gleb Natapov Date: Thu, 14 Oct 2010 11:22:50 +0200 Subject: KVM: Add PV MSR to enable asynchronous page faults delivery. Guest enables async PF vcpu functionality using this MSR. Reviewed-by: Rik van Riel Signed-off-by: Gleb Natapov Signed-off-by: Marcelo Tosatti --- include/linux/kvm.h | 1 + include/linux/kvm_host.h | 1 + 2 files changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/kvm.h b/include/linux/kvm.h index 919ae53adc5c..ea2dc1a2e13d 100644 --- a/include/linux/kvm.h +++ b/include/linux/kvm.h @@ -540,6 +540,7 @@ struct kvm_ppc_pvinfo { #endif #define KVM_CAP_PPC_GET_PVINFO 57 #define KVM_CAP_PPC_IRQ_LEVEL 58 +#define KVM_CAP_ASYNC_PF 59 #ifdef KVM_CAP_IRQ_ROUTING diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index e6748204cd56..ee4314e15ead 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -93,6 +93,7 @@ void kvm_clear_async_pf_completion_queue(struct kvm_vcpu *vcpu); void kvm_check_async_pf_completion(struct kvm_vcpu *vcpu); int kvm_setup_async_pf(struct kvm_vcpu *vcpu, gva_t gva, gfn_t gfn, struct kvm_arch_async_pf *arch); +int kvm_async_pf_wakeup_all(struct kvm_vcpu *vcpu); #endif struct kvm_vcpu { -- cgit v1.2.3 From 612819c3c6e67bac8fceaa7cc402f13b1b63f7e4 Mon Sep 17 00:00:00 2001 From: Marcelo Tosatti Date: Fri, 22 Oct 2010 14:18:18 -0200 Subject: KVM: propagate fault r/w information to gup(), allow read-only memory As suggested by Andrea, pass r/w error code to gup(), upgrading read fault to writable if host pte allows it. Signed-off-by: Marcelo Tosatti Signed-off-by: Avi Kivity --- include/linux/kvm_host.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index ee4314e15ead..462b982fedfb 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -334,8 +334,11 @@ void kvm_set_page_accessed(struct page *page); pfn_t hva_to_pfn_atomic(struct kvm *kvm, unsigned long addr); pfn_t gfn_to_pfn_atomic(struct kvm *kvm, gfn_t gfn); -pfn_t gfn_to_pfn_async(struct kvm *kvm, gfn_t gfn, bool *async); +pfn_t gfn_to_pfn_async(struct kvm *kvm, gfn_t gfn, bool *async, + bool write_fault, bool *writable); pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn); +pfn_t gfn_to_pfn_prot(struct kvm *kvm, gfn_t gfn, bool write_fault, + bool *writable); pfn_t gfn_to_pfn_memslot(struct kvm *kvm, struct kvm_memory_slot *slot, gfn_t gfn); int memslot_id(struct kvm *kvm, gfn_t gfn); -- cgit v1.2.3 From 515a01279a187415322a80736800a7d6325876ab Mon Sep 17 00:00:00 2001 From: Takuya Yoshikawa Date: Wed, 27 Oct 2010 18:23:54 +0900 Subject: KVM: pre-allocate one more dirty bitmap to avoid vmalloc() Currently x86's kvm_vm_ioctl_get_dirty_log() needs to allocate a bitmap by vmalloc() which will be used in the next logging and this has been causing bad effect to VGA and live-migration: vmalloc() consumes extra systime, triggers tlb flush, etc. This patch resolves this issue by pre-allocating one more bitmap and switching between two bitmaps during dirty logging. Performance improvement: I measured performance for the case of VGA update by trace-cmd. The result was 1.5 times faster than the original one. In the case of live migration, the improvement ratio depends on the workload and the guest memory size. In general, the larger the memory size is the more benefits we get. Note: This does not change other architectures's logic but the allocation size becomes twice. This will increase the actual memory consumption only when the new size changes the number of pages allocated by vmalloc(). Signed-off-by: Takuya Yoshikawa Signed-off-by: Fernando Luis Vazquez Cao Signed-off-by: Marcelo Tosatti --- include/linux/kvm_host.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 462b982fedfb..bcf71c7730f0 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -150,6 +150,7 @@ struct kvm_memory_slot { unsigned long flags; unsigned long *rmap; unsigned long *dirty_bitmap; + unsigned long *dirty_bitmap_head; struct { unsigned long rmap_pde; int write_count; -- cgit v1.2.3 From d89f5eff70a31237ffa1e21c51d23ca532110aea Mon Sep 17 00:00:00 2001 From: Jan Kiszka Date: Tue, 9 Nov 2010 17:02:49 +0100 Subject: KVM: Clean up vm creation and release IA64 support forces us to abstract the allocation of the kvm structure. But instead of mixing this up with arch-specific initialization and doing the same on destruction, split both steps. This allows to move generic destruction calls into generic code. It also fixes error clean-up on failures of kvm_create_vm for IA64. Signed-off-by: Jan Kiszka Signed-off-by: Avi Kivity --- include/linux/kvm_host.h | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index bcf71c7730f0..2d63f2c0137c 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -16,6 +16,7 @@ #include #include #include +#include #include #include @@ -441,7 +442,19 @@ int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu); void kvm_free_physmem(struct kvm *kvm); -struct kvm *kvm_arch_create_vm(void); +#ifndef __KVM_HAVE_ARCH_VM_ALLOC +static inline struct kvm *kvm_arch_alloc_vm(void) +{ + return kzalloc(sizeof(struct kvm), GFP_KERNEL); +} + +static inline void kvm_arch_free_vm(struct kvm *kvm) +{ + kfree(kvm); +} +#endif + +int kvm_arch_init_vm(struct kvm *kvm); void kvm_arch_destroy_vm(struct kvm *kvm); void kvm_free_all_assigned_devices(struct kvm *kvm); void kvm_arch_sync_events(struct kvm *kvm); -- cgit v1.2.3 From 0645211c43df0b96c51e12980066b3227e10b164 Mon Sep 17 00:00:00 2001 From: Jan Kiszka Date: Tue, 16 Nov 2010 22:30:03 +0100 Subject: KVM: Switch assigned device IRQ forwarding to threaded handler This improves the IRQ forwarding for assigned devices: By using the kernel's threaded IRQ scheme, we can get rid of the latency-prone work queue and simplify the code in the same run. Moreover, we no longer have to hold assigned_dev_lock while raising the guest IRQ, which can be a lenghty operation as we may have to iterate over all VCPUs. The lock is now only used for synchronizing masking vs. unmasking of INTx-type IRQs, thus is renames to intx_lock. Acked-by: Alex Williamson Acked-by: Michael S. Tsirkin Signed-off-by: Jan Kiszka Signed-off-by: Marcelo Tosatti --- include/linux/kvm_host.h | 12 ++---------- 1 file changed, 2 insertions(+), 10 deletions(-) (limited to 'include/linux') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 2d63f2c0137c..9fe7fefe76b1 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -470,16 +470,8 @@ struct kvm_irq_ack_notifier { void (*irq_acked)(struct kvm_irq_ack_notifier *kian); }; -#define KVM_ASSIGNED_MSIX_PENDING 0x1 -struct kvm_guest_msix_entry { - u32 vector; - u16 entry; - u16 flags; -}; - struct kvm_assigned_dev_kernel { struct kvm_irq_ack_notifier ack_notifier; - struct work_struct interrupt_work; struct list_head list; int assigned_dev_id; int host_segnr; @@ -490,13 +482,13 @@ struct kvm_assigned_dev_kernel { bool host_irq_disabled; struct msix_entry *host_msix_entries; int guest_irq; - struct kvm_guest_msix_entry *guest_msix_entries; + struct msix_entry *guest_msix_entries; unsigned long irq_requested_type; int irq_source_id; int flags; struct pci_dev *dev; struct kvm *kvm; - spinlock_t assigned_dev_lock; + spinlock_t intx_lock; }; struct kvm_irq_mask_notifier { -- cgit v1.2.3 From 1e001d49f9f9a0e3eb72939ad49d9a2c7754e9c1 Mon Sep 17 00:00:00 2001 From: Jan Kiszka Date: Tue, 16 Nov 2010 22:30:04 +0100 Subject: KVM: Refactor IRQ names of assigned devices Cosmetic change, but it helps to correlate IRQs with PCI devices. Acked-by: Alex Williamson Acked-by: Michael S. Tsirkin Signed-off-by: Jan Kiszka Signed-off-by: Marcelo Tosatti --- include/linux/kvm_host.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 9fe7fefe76b1..4bd663d6443d 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -489,6 +489,7 @@ struct kvm_assigned_dev_kernel { struct pci_dev *dev; struct kvm *kvm; spinlock_t intx_lock; + char irq_name[32]; }; struct kvm_irq_mask_notifier { -- cgit v1.2.3 From bd2b53b20fcd0d6c4c815b54e6d464e34429d3a4 Mon Sep 17 00:00:00 2001 From: "Michael S. Tsirkin" Date: Thu, 18 Nov 2010 19:09:08 +0200 Subject: KVM: fast-path msi injection with irqfd Store irq routing table pointer in the irqfd object, and use that to inject MSI directly without bouncing out to a kernel thread. While we touch this structure, rearrange irqfd fields to make fastpath better packed for better cache utilization. This also adds some comments about locking rules and rcu usage in code. Some notes on the design: - Use pointer into the rt instead of copying an entry, to make it possible to use rcu, thus side-stepping locking complexities. We also save some memory this way. - Old workqueue code is still used for level irqs. I don't think we DTRT with level anyway, however, it seems easier to keep the code around as it has been thought through and debugged, and fix level later than rip out and re-instate it later. Signed-off-by: Michael S. Tsirkin Acked-by: Marcelo Tosatti Acked-by: Gregory Haskins Signed-off-by: Avi Kivity --- include/linux/kvm_host.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'include/linux') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 4bd663d6443d..f17beae3cca0 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -17,6 +17,7 @@ #include #include #include +#include #include #include @@ -240,6 +241,10 @@ struct kvm { struct mutex irq_lock; #ifdef CONFIG_HAVE_KVM_IRQCHIP + /* + * Update side is protected by irq_lock and, + * if configured, irqfds.lock. + */ struct kvm_irq_routing_table __rcu *irq_routing; struct hlist_head mask_notifier_list; struct hlist_head irq_ack_notifier_list; @@ -511,6 +516,8 @@ void kvm_get_intr_delivery_bitmask(struct kvm_ioapic *ioapic, unsigned long *deliver_bitmask); #endif int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level); +int kvm_set_msi(struct kvm_kernel_irq_routing_entry *irq_entry, struct kvm *kvm, + int irq_source_id, int level); void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin); void kvm_register_irq_ack_notifier(struct kvm *kvm, struct kvm_irq_ack_notifier *kian); @@ -652,17 +659,26 @@ static inline void kvm_free_irq_routing(struct kvm *kvm) {} void kvm_eventfd_init(struct kvm *kvm); int kvm_irqfd(struct kvm *kvm, int fd, int gsi, int flags); void kvm_irqfd_release(struct kvm *kvm); +void kvm_irq_routing_update(struct kvm *, struct kvm_irq_routing_table *); int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args); #else static inline void kvm_eventfd_init(struct kvm *kvm) {} + static inline int kvm_irqfd(struct kvm *kvm, int fd, int gsi, int flags) { return -EINVAL; } static inline void kvm_irqfd_release(struct kvm *kvm) {} + +static inline void kvm_irq_routing_update(struct kvm *kvm, + struct kvm_irq_routing_table *irq_rt) +{ + rcu_assign_pointer(kvm->irq_routing, irq_rt); +} + static inline int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args) { return -ENOSYS; -- cgit v1.2.3 From 27923eb19c5d1197bd9d1472abdc2e749f21387a Mon Sep 17 00:00:00 2001 From: Alexander Graf Date: Thu, 25 Nov 2010 10:25:44 +0100 Subject: KVM: PPC: Fix compile warning KVM compilation fails with the following warning: include/linux/kvm_host.h: In function 'kvm_irq_routing_update': include/linux/kvm_host.h:679:2: error: 'struct kvm' has no member named 'irq_routing' That function is only used and reasonable to have on systems that implement an in-kernel interrupt chip. PPC doesn't. Fix by #ifdef'ing it out when no irqchip is available. Signed-off-by: Alexander Graf Signed-off-by: Avi Kivity --- include/linux/kvm_host.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index f17beae3cca0..da0794f707f6 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -673,11 +673,13 @@ static inline int kvm_irqfd(struct kvm *kvm, int fd, int gsi, int flags) static inline void kvm_irqfd_release(struct kvm *kvm) {} +#ifdef CONFIG_HAVE_KVM_IRQCHIP static inline void kvm_irq_routing_update(struct kvm *kvm, struct kvm_irq_routing_table *irq_rt) { rcu_assign_pointer(kvm->irq_routing, irq_rt); } +#endif static inline int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args) { -- cgit v1.2.3 From a4ee1ca4a36e7857d90ae8c2b85f1bde9a042c10 Mon Sep 17 00:00:00 2001 From: Xiao Guangrong Date: Tue, 23 Nov 2010 11:13:00 +0800 Subject: KVM: MMU: delay flush all tlbs on sync_page path Quote from Avi: | I don't think we need to flush immediately; set a "tlb dirty" bit somewhere | that is cleareded when we flush the tlb. kvm_mmu_notifier_invalidate_page() | can consult the bit and force a flush if set. Signed-off-by: Xiao Guangrong Signed-off-by: Marcelo Tosatti --- include/linux/kvm_host.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index da0794f707f6..ac4e83a1a10d 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -254,6 +254,7 @@ struct kvm { struct mmu_notifier mmu_notifier; unsigned long mmu_notifier_seq; long mmu_notifier_count; + long tlbs_dirty; #endif }; @@ -382,6 +383,7 @@ void kvm_vcpu_on_spin(struct kvm_vcpu *vcpu); void kvm_resched(struct kvm_vcpu *vcpu); void kvm_load_guest_fpu(struct kvm_vcpu *vcpu); void kvm_put_guest_fpu(struct kvm_vcpu *vcpu); + void kvm_flush_remote_tlbs(struct kvm *kvm); void kvm_reload_remote_mmus(struct kvm *kvm); -- cgit v1.2.3 From d4dbf470096c51cb4785167ea59fdbdea87ccbe4 Mon Sep 17 00:00:00 2001 From: Takuya Yoshikawa Date: Tue, 7 Dec 2010 12:59:07 +0900 Subject: KVM: MMU: Make the way of accessing lpage_info more generic Large page information has two elements but one of them, write_count, alone is accessed by a helper function. This patch replaces this helper function with more generic one which returns newly named kvm_lpage_info structure and use it to access the other element rmap_pde. Signed-off-by: Takuya Yoshikawa Signed-off-by: Avi Kivity --- include/linux/kvm_host.h | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index ac4e83a1a10d..bd0da8f12500 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -146,6 +146,11 @@ struct kvm_vcpu { */ #define KVM_MEM_MAX_NR_PAGES ((1UL << 31) - 1) +struct kvm_lpage_info { + unsigned long rmap_pde; + int write_count; +}; + struct kvm_memory_slot { gfn_t base_gfn; unsigned long npages; @@ -153,10 +158,7 @@ struct kvm_memory_slot { unsigned long *rmap; unsigned long *dirty_bitmap; unsigned long *dirty_bitmap_head; - struct { - unsigned long rmap_pde; - int write_count; - } *lpage_info[KVM_NR_PAGE_SIZES - 1]; + struct kvm_lpage_info *lpage_info[KVM_NR_PAGE_SIZES - 1]; unsigned long userspace_addr; int user_alloc; int id; -- cgit v1.2.3 From 5c663a1534d27d817e17eed06a83d08f497f9f4f Mon Sep 17 00:00:00 2001 From: Avi Kivity Date: Wed, 8 Dec 2010 18:04:51 +0200 Subject: KVM: Fix build error on s390 due to missing tlbs_dirty Make it available for all archs. Signed-off-by: Avi Kivity --- include/linux/kvm_host.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index bd0da8f12500..b5021db21858 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -256,8 +256,8 @@ struct kvm { struct mmu_notifier mmu_notifier; unsigned long mmu_notifier_seq; long mmu_notifier_count; - long tlbs_dirty; #endif + long tlbs_dirty; }; /* The guest did something we don't support. */ -- cgit v1.2.3 From 3a93f2a9f4d8f73d74c0e552feb68a10f778a219 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Wed, 10 Nov 2010 14:38:29 +0000 Subject: regulator: Report actual configured voltage to set_voltage() Change the interface used by set_voltage() to report the selected value to the regulator core in terms of a selector used by list_voltage(). This allows the regulator core to know the voltage that was chosen without having to do an explict get_voltage(), which would be much more expensive as it will generally access hardware. Signed-off-by: Mark Brown Signed-off-by: Liam Girdwood --- include/linux/regulator/driver.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h index 592cd7c642c2..4275cd475eac 100644 --- a/include/linux/regulator/driver.h +++ b/include/linux/regulator/driver.h @@ -79,7 +79,8 @@ struct regulator_ops { int (*list_voltage) (struct regulator_dev *, unsigned selector); /* get/set regulator voltage */ - int (*set_voltage) (struct regulator_dev *, int min_uV, int max_uV); + int (*set_voltage) (struct regulator_dev *, int min_uV, int max_uV, + unsigned *selector); int (*get_voltage) (struct regulator_dev *); /* get/set regulator current */ -- cgit v1.2.3 From f8c12fe329c8da9f50d8b2b1183eeaa4d587e747 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Mon, 29 Nov 2010 15:55:17 +0000 Subject: regulator: Copy constraints from regulators when initialising them Currently the regulator API uses the constraints structure passed in to the core throughout the lifetime of the object. This means that it is not possible to mark the constraints as __initdata so if the kernel supports many boards the constraints for all of them are kept around throughout the lifetime of the system, consuming memory needlessly. By copying constraints that are actually used we allow the use of __initdata, saving memory when multiple boards are supported. This also means the constraints can be const. Signed-off-by: Mark Brown Signed-off-by: Liam Girdwood --- include/linux/regulator/driver.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h index 4275cd475eac..cce575359712 100644 --- a/include/linux/regulator/driver.h +++ b/include/linux/regulator/driver.h @@ -192,7 +192,7 @@ struct regulator_dev { }; struct regulator_dev *regulator_register(struct regulator_desc *regulator_desc, - struct device *dev, struct regulator_init_data *init_data, + struct device *dev, const struct regulator_init_data *init_data, void *driver_data); void regulator_unregister(struct regulator_dev *rdev); -- cgit v1.2.3 From 476c2d83c7ffb2429b2a504fbdb4326fc8a9d0e8 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Fri, 10 Dec 2010 17:28:07 +0000 Subject: regulator: Allow drivers to report voltages as selectors Since drivers already have to provide an API for translating selectors into voltages they may as well just report the selector values directly to the core API rather than implement the lookup themselves. The old interface is left in place for now, but may be removed in future. Signed-off-by: Mark Brown Signed-off-by: Liam Girdwood --- include/linux/regulator/driver.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h index cce575359712..bf3e653591b9 100644 --- a/include/linux/regulator/driver.h +++ b/include/linux/regulator/driver.h @@ -43,6 +43,8 @@ enum regulator_status { * @set_voltage: Set the voltage for the regulator within the range specified. * The driver should select the voltage closest to min_uV. * @get_voltage: Return the currently configured voltage for the regulator. + * @get_voltage_sel: Return the currently configured voltage selector for the + * regulator. * @list_voltage: Return one of the supported voltages, in microvolts; zero * if the selector indicates a voltage that is unusable on this system; * or negative errno. Selectors range from zero to one less than @@ -82,6 +84,7 @@ struct regulator_ops { int (*set_voltage) (struct regulator_dev *, int min_uV, int max_uV, unsigned *selector); int (*get_voltage) (struct regulator_dev *); + int (*get_voltage_sel) (struct regulator_dev *); /* get/set regulator current */ int (*set_current_limit) (struct regulator_dev *, -- cgit v1.2.3 From cb189b07d57b574cc14382e2130960b0a0193c23 Mon Sep 17 00:00:00 2001 From: Bengt Jonsson Date: Fri, 10 Dec 2010 11:08:40 +0100 Subject: regulators: Moved define for number of regulators in ab8500 The define for number of regulators is moved from ab8500-core to ab8500-regulator so that the regulator driver can be updated independently of ab8500-core. This also changes the platform configuration structure of ab8500-core so that it contains a pointer to the regulator_init_data array plus number of regulators instead of an fixed size array of pointers to regulator_init_data. Signed-off-by: Bengt Jonsson Acked-by: Linus Walleij Acked-by: Mark Brown Signed-off-by: Liam Girdwood --- include/linux/mfd/ab8500.h | 5 ++--- include/linux/regulator/ab8500.h | 24 +++++++++++++----------- 2 files changed, 15 insertions(+), 14 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/ab8500.h b/include/linux/mfd/ab8500.h index d63b6050b183..85cf2c28fac6 100644 --- a/include/linux/mfd/ab8500.h +++ b/include/linux/mfd/ab8500.h @@ -99,8 +99,6 @@ #define AB8500_NR_IRQS 104 #define AB8500_NUM_IRQ_REGS 13 -#define AB8500_NUM_REGULATORS 15 - /** * struct ab8500 - ab8500 internal structure * @dev: parent device @@ -145,7 +143,8 @@ struct regulator_init_data; struct ab8500_platform_data { int irq_base; void (*init) (struct ab8500 *); - struct regulator_init_data *regulator[AB8500_NUM_REGULATORS]; + int num_regulator; + struct regulator_init_data *regulator; }; extern int __devinit ab8500_init(struct ab8500 *ab8500); diff --git a/include/linux/regulator/ab8500.h b/include/linux/regulator/ab8500.h index f509877c2ed4..6a210f1511fc 100644 --- a/include/linux/regulator/ab8500.h +++ b/include/linux/regulator/ab8500.h @@ -11,15 +11,17 @@ #define __LINUX_MFD_AB8500_REGULATOR_H /* AB8500 regulators */ -#define AB8500_LDO_AUX1 0 -#define AB8500_LDO_AUX2 1 -#define AB8500_LDO_AUX3 2 -#define AB8500_LDO_INTCORE 3 -#define AB8500_LDO_TVOUT 4 -#define AB8500_LDO_AUDIO 5 -#define AB8500_LDO_ANAMIC1 6 -#define AB8500_LDO_ANAMIC2 7 -#define AB8500_LDO_DMIC 8 -#define AB8500_LDO_ANA 9 - +enum ab8500_regulator_id { + AB8500_LDO_AUX1, + AB8500_LDO_AUX2, + AB8500_LDO_AUX3, + AB8500_LDO_INTCORE, + AB8500_LDO_TVOUT, + AB8500_LDO_AUDIO, + AB8500_LDO_ANAMIC1, + AB8500_LDO_ANAMIC2, + AB8500_LDO_DMIC, + AB8500_LDO_ANA, + AB8500_NUM_REGULATORS, +}; #endif -- cgit v1.2.3 From 57c78e359a35c69eca4c88f107500f74ef7f0acf Mon Sep 17 00:00:00 2001 From: Yong Shen Date: Tue, 14 Dec 2010 14:00:53 +0800 Subject: Change the register name definitions for mc13783 To make mc13783 and mc13892 share code, the register names should be changed to fit the new macro definitions in the comming patch. Signed-off-by: Yong Shen Acked-by: Sascha Hauer Acked-by: Samuel Ortiz Acked-by: Mark Brown Signed-off-by: Liam Girdwood --- include/linux/mfd/mc13783.h | 67 +++++++++++++++++++++++---------------------- 1 file changed, 34 insertions(+), 33 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/mc13783.h b/include/linux/mfd/mc13783.h index b4c741e352c2..7d0f3d6a0002 100644 --- a/include/linux/mfd/mc13783.h +++ b/include/linux/mfd/mc13783.h @@ -1,4 +1,5 @@ /* + * Copyright 2010 Yong Shen * Copyright 2009-2010 Pengutronix * Uwe Kleine-Koenig * @@ -122,39 +123,39 @@ int mc13783_adc_do_conversion(struct mc13783 *mc13783, unsigned int mode, unsigned int channel, unsigned int *sample); -#define MC13783_SW_SW1A 0 -#define MC13783_SW_SW1B 1 -#define MC13783_SW_SW2A 2 -#define MC13783_SW_SW2B 3 -#define MC13783_SW_SW3 4 -#define MC13783_SW_PLL 5 -#define MC13783_REGU_VAUDIO 6 -#define MC13783_REGU_VIOHI 7 -#define MC13783_REGU_VIOLO 8 -#define MC13783_REGU_VDIG 9 -#define MC13783_REGU_VGEN 10 -#define MC13783_REGU_VRFDIG 11 -#define MC13783_REGU_VRFREF 12 -#define MC13783_REGU_VRFCP 13 -#define MC13783_REGU_VSIM 14 -#define MC13783_REGU_VESIM 15 -#define MC13783_REGU_VCAM 16 -#define MC13783_REGU_VRFBG 17 -#define MC13783_REGU_VVIB 18 -#define MC13783_REGU_VRF1 19 -#define MC13783_REGU_VRF2 20 -#define MC13783_REGU_VMMC1 21 -#define MC13783_REGU_VMMC2 22 -#define MC13783_REGU_GPO1 23 -#define MC13783_REGU_GPO2 24 -#define MC13783_REGU_GPO3 25 -#define MC13783_REGU_GPO4 26 -#define MC13783_REGU_V1 27 -#define MC13783_REGU_V2 28 -#define MC13783_REGU_V3 29 -#define MC13783_REGU_V4 30 -#define MC13783_REGU_PWGT1SPI 31 -#define MC13783_REGU_PWGT2SPI 32 +#define MC13783_REG_SW1A 0 +#define MC13783_REG_SW1B 1 +#define MC13783_REG_SW2A 2 +#define MC13783_REG_SW2B 3 +#define MC13783_REG_SW3 4 +#define MC13783_REG_PLL 5 +#define MC13783_REG_VAUDIO 6 +#define MC13783_REG_VIOHI 7 +#define MC13783_REG_VIOLO 8 +#define MC13783_REG_VDIG 9 +#define MC13783_REG_VGEN 10 +#define MC13783_REG_VRFDIG 11 +#define MC13783_REG_VRFREF 12 +#define MC13783_REG_VRFCP 13 +#define MC13783_REG_VSIM 14 +#define MC13783_REG_VESIM 15 +#define MC13783_REG_VCAM 16 +#define MC13783_REG_VRFBG 17 +#define MC13783_REG_VVIB 18 +#define MC13783_REG_VRF1 19 +#define MC13783_REG_VRF2 20 +#define MC13783_REG_VMMC1 21 +#define MC13783_REG_VMMC2 22 +#define MC13783_REG_GPO1 23 +#define MC13783_REG_GPO2 24 +#define MC13783_REG_GPO3 25 +#define MC13783_REG_GPO4 26 +#define MC13783_REG_V1 27 +#define MC13783_REG_V2 28 +#define MC13783_REG_V3 29 +#define MC13783_REG_V4 30 +#define MC13783_REG_PWGT1SPI 31 +#define MC13783_REG_PWGT2SPI 32 #define MC13783_IRQ_ADCDONE MC13XXX_IRQ_ADCDONE #define MC13783_IRQ_ADCBISDONE MC13XXX_IRQ_ADCBISDONE -- cgit v1.2.3 From 5e428d5cecc3f109b52e993a1bd91f82137867b3 Mon Sep 17 00:00:00 2001 From: Yong Shen Date: Tue, 14 Dec 2010 14:00:55 +0800 Subject: regulator: support PMIC mc13892 add support for mc13892, tested on mx51 babbage board Signed-off-by: Arnaud Patard Signed-off-by: Yong Shen Acked-by: Sascha Hauer Acked-by: Samuel Ortiz Acked-by: Mark Brown Signed-off-by: Liam Girdwood --- include/linux/mfd/mc13892.h | 39 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100644 include/linux/mfd/mc13892.h (limited to 'include/linux') diff --git a/include/linux/mfd/mc13892.h b/include/linux/mfd/mc13892.h new file mode 100644 index 000000000000..a00f2bec178c --- /dev/null +++ b/include/linux/mfd/mc13892.h @@ -0,0 +1,39 @@ +/* + * Copyright 2010 Yong Shen + * + * This program is free software; you can redistribute it and/or modify it under + * the terms of the GNU General Public License version 2 as published by the + * Free Software Foundation. + */ + +#ifndef __LINUX_MFD_MC13892_H +#define __LINUX_MFD_MC13892_H + +#include + +#define MC13892_SW1 0 +#define MC13892_SW2 1 +#define MC13892_SW3 2 +#define MC13892_SW4 3 +#define MC13892_SWBST 4 +#define MC13892_VIOHI 5 +#define MC13892_VPLL 6 +#define MC13892_VDIG 7 +#define MC13892_VSD 8 +#define MC13892_VUSB2 9 +#define MC13892_VVIDEO 10 +#define MC13892_VAUDIO 11 +#define MC13892_VCAM 12 +#define MC13892_VGEN1 13 +#define MC13892_VGEN2 14 +#define MC13892_VGEN3 15 +#define MC13892_VUSB 16 +#define MC13892_GPO1 17 +#define MC13892_GPO2 18 +#define MC13892_GPO3 19 +#define MC13892_GPO4 20 +#define MC13892_PWGT1SPI 21 +#define MC13892_PWGT2SPI 22 +#define MC13892_VCOINCELL 23 + +#endif -- cgit v1.2.3 From e8eef82b2c652d031bee9dff9762325672f5a1e0 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Sun, 12 Dec 2010 14:36:17 +0000 Subject: regulator: Provide a selector based set_voltage_sel() operation Many regulator drivers implement voltage setting by looping through a table of possible values, normally because the set of available voltages can't be mapped onto selectors with simple calcuation. Factor out these loops by providing a variant of set_voltage() which takes a selector rather than a voltage range as an argument and implementing a loop through the available selectors in the core. This is not going to be suitable for use with all devices as when the regulator voltage can be mapped onto selector values with a simple calculation the linear scan through the available values will be more expensive than just doing the calculation, especially for regulators that provide fine grained voltage control. Signed-off-by: Mark Brown Signed-off-by: Liam Girdwood --- include/linux/regulator/driver.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h index bf3e653591b9..975ae06cb634 100644 --- a/include/linux/regulator/driver.h +++ b/include/linux/regulator/driver.h @@ -42,6 +42,8 @@ enum regulator_status { * * @set_voltage: Set the voltage for the regulator within the range specified. * The driver should select the voltage closest to min_uV. + * @set_voltage_sel: Set the voltage for the regulator using the specified + * selector. * @get_voltage: Return the currently configured voltage for the regulator. * @get_voltage_sel: Return the currently configured voltage selector for the * regulator. @@ -83,6 +85,7 @@ struct regulator_ops { /* get/set regulator voltage */ int (*set_voltage) (struct regulator_dev *, int min_uV, int max_uV, unsigned *selector); + int (*set_voltage_sel) (struct regulator_dev *, unsigned selector); int (*get_voltage) (struct regulator_dev *); int (*get_voltage_sel) (struct regulator_dev *); -- cgit v1.2.3 From 606a25628187ce863b48d43ca42bc0cbe8342de9 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Thu, 16 Dec 2010 15:49:36 +0000 Subject: regulator: Add API to re-apply voltage to hardware When cooperating with an external control source the regulator setup may be changed underneath the API. Currently consumers can just redo the regulator_set_voltage() to restore a previously set configuration but provide an explicit API for doing this as optimsations in the regulator_set_voltage() implementation will shortly prevent that. Signed-off-by: Mark Brown Signed-off-by: Liam Girdwood --- include/linux/regulator/consumer.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/regulator/consumer.h b/include/linux/regulator/consumer.h index ebd747265294..7954f6bd7edb 100644 --- a/include/linux/regulator/consumer.h +++ b/include/linux/regulator/consumer.h @@ -154,6 +154,7 @@ int regulator_is_supported_voltage(struct regulator *regulator, int min_uV, int max_uV); int regulator_set_voltage(struct regulator *regulator, int min_uV, int max_uV); int regulator_get_voltage(struct regulator *regulator); +int regulator_sync_voltage(struct regulator *regulator); int regulator_set_current_limit(struct regulator *regulator, int min_uA, int max_uA); int regulator_get_current_limit(struct regulator *regulator); -- cgit v1.2.3 From 1130e5b3ff4a7f3f54a48d46e9d0d81b47765bd8 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Tue, 21 Dec 2010 23:49:31 +0000 Subject: regulator: Add initial per-regulator debugfs support We only expose the use and open counts to userspace, providing a tiny bit of insight into what the API is up to. Signed-off-by: Mark Brown Signed-off-by: Liam Girdwood --- include/linux/regulator/driver.h | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h index 975ae06cb634..b8ed16a33c47 100644 --- a/include/linux/regulator/driver.h +++ b/include/linux/regulator/driver.h @@ -175,9 +175,9 @@ struct regulator_desc { */ struct regulator_dev { struct regulator_desc *desc; - int use_count; - int open_count; int exclusive; + u32 use_count; + u32 open_count; /* lists we belong to */ struct list_head list; /* list of all regulators */ @@ -195,6 +195,10 @@ struct regulator_dev { struct regulator_dev *supply; /* for tree */ void *reg_data; /* regulator_dev data */ + +#ifdef CONFIG_DEBUG_FS + struct dentry *debugfs; +#endif }; struct regulator_dev *regulator_register(struct regulator_desc *regulator_desc, -- cgit v1.2.3 From d247632c08c674864d438733280422ddb7130ff8 Mon Sep 17 00:00:00 2001 From: Len Brown Date: Wed, 12 Jan 2011 02:34:59 -0500 Subject: cpuidle: delete NOP CPUIDLE_FLAG_POLL it serves no purpose Signed-off-by: Len Brown --- include/linux/cpuidle.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h index 1be416bbbb82..dee32853b0da 100644 --- a/include/linux/cpuidle.h +++ b/include/linux/cpuidle.h @@ -48,7 +48,6 @@ struct cpuidle_state { /* Idle State Flags */ #define CPUIDLE_FLAG_TIME_VALID (0x01) /* is residency time measurable? */ #define CPUIDLE_FLAG_CHECK_BM (0x02) /* BM activity will exit state */ -#define CPUIDLE_FLAG_POLL (0x10) /* no latency, no savings */ #define CPUIDLE_FLAG_SHALLOW (0x20) /* low latency, minimal savings */ #define CPUIDLE_FLAG_BALANCED (0x40) /* medium latency, moderate savings */ #define CPUIDLE_FLAG_DEEP (0x80) /* high latency, large savings */ -- cgit v1.2.3 From 642f11c53f17aee991d97d14e6922172849ef227 Mon Sep 17 00:00:00 2001 From: Len Brown Date: Wed, 12 Jan 2011 02:45:00 -0500 Subject: cpuidle: delete unused CPUIDLE_FLAG_SHALLOW, BALANCED, DEEP definitions Signed-off-by: Len Brown --- include/linux/cpuidle.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h index dee32853b0da..c25295337382 100644 --- a/include/linux/cpuidle.h +++ b/include/linux/cpuidle.h @@ -48,9 +48,6 @@ struct cpuidle_state { /* Idle State Flags */ #define CPUIDLE_FLAG_TIME_VALID (0x01) /* is residency time measurable? */ #define CPUIDLE_FLAG_CHECK_BM (0x02) /* BM activity will exit state */ -#define CPUIDLE_FLAG_SHALLOW (0x20) /* low latency, minimal savings */ -#define CPUIDLE_FLAG_BALANCED (0x40) /* medium latency, moderate savings */ -#define CPUIDLE_FLAG_DEEP (0x80) /* high latency, large savings */ #define CPUIDLE_FLAG_IGNORE (0x100) /* ignore during this idle period */ #define CPUIDLE_FLAG_TLB_FLUSHED (0x200) /* tlb will be flushed */ -- cgit v1.2.3 From 956d033fb2eb3f8818260cdf01644bf4dc1a9e33 Mon Sep 17 00:00:00 2001 From: Len Brown Date: Wed, 12 Jan 2011 02:51:20 -0500 Subject: cpuidle: CPUIDLE_FLAG_TLB_FLUSHED is specific to intel_idle Signed-off-by: Len Brown --- include/linux/cpuidle.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h index c25295337382..6be722c725d5 100644 --- a/include/linux/cpuidle.h +++ b/include/linux/cpuidle.h @@ -49,7 +49,6 @@ struct cpuidle_state { #define CPUIDLE_FLAG_TIME_VALID (0x01) /* is residency time measurable? */ #define CPUIDLE_FLAG_CHECK_BM (0x02) /* BM activity will exit state */ #define CPUIDLE_FLAG_IGNORE (0x100) /* ignore during this idle period */ -#define CPUIDLE_FLAG_TLB_FLUSHED (0x200) /* tlb will be flushed */ #define CPUIDLE_DRIVER_FLAGS_MASK (0xFFFF0000) -- cgit v1.2.3 From 5392083748a340f68052c0b83a7ce28b10324972 Mon Sep 17 00:00:00 2001 From: Len Brown Date: Wed, 12 Jan 2011 02:56:15 -0500 Subject: cpuidle: CPUIDLE_FLAG_CHECK_BM is omap3_idle specific Signed-off-by: Len Brown --- include/linux/cpuidle.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h index 6be722c725d5..36719ead50e8 100644 --- a/include/linux/cpuidle.h +++ b/include/linux/cpuidle.h @@ -47,7 +47,6 @@ struct cpuidle_state { /* Idle State Flags */ #define CPUIDLE_FLAG_TIME_VALID (0x01) /* is residency time measurable? */ -#define CPUIDLE_FLAG_CHECK_BM (0x02) /* BM activity will exit state */ #define CPUIDLE_FLAG_IGNORE (0x100) /* ignore during this idle period */ #define CPUIDLE_DRIVER_FLAGS_MASK (0xFFFF0000) -- cgit v1.2.3 From f00c9e44ad1a9660fe8cd3ca15b6cd9497172eab Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Wed, 15 Sep 2010 17:38:58 +0200 Subject: quota: Fix deadlock during path resolution As Al Viro pointed out path resolution during Q_QUOTAON calls to quotactl is prone to deadlocks. We hold s_umount semaphore for reading during the path resolution and resolution itself may need to acquire the semaphore for writing when e. g. autofs mountpoint is passed. Solve the problem by performing the resolution before we get hold of the superblock (and thus s_umount semaphore). The whole thing is complicated by the fact that some filesystems (OCFS2) ignore the path argument. So to distinguish between filesystem which want the path and which do not we introduce new .quota_on_meta callback which does not get the path. OCFS2 then uses this callback instead of old .quota_on. CC: Al Viro CC: Christoph Hellwig CC: Ted Ts'o CC: Joel Becker Signed-off-by: Jan Kara --- include/linux/quota.h | 5 ++++- include/linux/quotaops.h | 4 +--- 2 files changed, 5 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/quota.h b/include/linux/quota.h index 94c1f03b50eb..9a85412e0db6 100644 --- a/include/linux/quota.h +++ b/include/linux/quota.h @@ -322,9 +322,12 @@ struct dquot_operations { qsize_t *(*get_reserved_space) (struct inode *); }; +struct path; + /* Operations handling requests from userspace */ struct quotactl_ops { - int (*quota_on)(struct super_block *, int, int, char *); + int (*quota_on)(struct super_block *, int, int, struct path *); + int (*quota_on_meta)(struct super_block *, int, int); int (*quota_off)(struct super_block *, int); int (*quota_sync)(struct super_block *, int, int); int (*get_info)(struct super_block *, int, struct if_dqinfo *); diff --git a/include/linux/quotaops.h b/include/linux/quotaops.h index 223b14cd129c..eb354f6f26b3 100644 --- a/include/linux/quotaops.h +++ b/include/linux/quotaops.h @@ -76,11 +76,9 @@ int dquot_mark_dquot_dirty(struct dquot *dquot); int dquot_file_open(struct inode *inode, struct file *file); -int dquot_quota_on(struct super_block *sb, int type, int format_id, - char *path); int dquot_enable(struct inode *inode, int type, int format_id, unsigned int flags); -int dquot_quota_on_path(struct super_block *sb, int type, int format_id, +int dquot_quota_on(struct super_block *sb, int type, int format_id, struct path *path); int dquot_quota_on_mount(struct super_block *sb, char *qf_name, int format_id, int type); -- cgit v1.2.3 From 2fc72c7b84002ffb3c66918e2a7b0ee607d8b5aa Mon Sep 17 00:00:00 2001 From: KOVACS Krisztian Date: Wed, 12 Jan 2011 20:25:08 +0100 Subject: netfilter: fix compilation when conntrack is disabled but tproxy is enabled The IPv6 tproxy patches split IPv6 defragmentation off of conntrack, but failed to update the #ifdef stanzas guarding the defragmentation related fields and code in skbuff and conntrack related code in nf_defrag_ipv6.c. This patch adds the required #ifdefs so that IPv6 tproxy can truly be used without connection tracking. Original report: http://marc.info/?l=linux-netdev&m=129010118516341&w=2 Reported-by: Randy Dunlap Acked-by: Randy Dunlap Signed-off-by: KOVACS Krisztian Signed-off-by: Pablo Neira Ayuso --- include/linux/skbuff.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'include/linux') diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 20ec0a64cb9f..bf221d65d9ad 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -255,6 +255,11 @@ typedef unsigned int sk_buff_data_t; typedef unsigned char *sk_buff_data_t; #endif +#if defined(CONFIG_NF_DEFRAG_IPV4) || defined(CONFIG_NF_DEFRAG_IPV4_MODULE) || \ + defined(CONFIG_NF_DEFRAG_IPV6) || defined(CONFIG_NF_DEFRAG_IPV6_MODULE) +#define NET_SKBUFF_NF_DEFRAG_NEEDED 1 +#endif + /** * struct sk_buff - socket buffer * @next: Next buffer in list @@ -362,6 +367,8 @@ struct sk_buff { void (*destructor)(struct sk_buff *skb); #if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE) struct nf_conntrack *nfct; +#endif +#ifdef NET_SKBUFF_NF_DEFRAG_NEEDED struct sk_buff *nfct_reasm; #endif #ifdef CONFIG_BRIDGE_NETFILTER @@ -2057,6 +2064,8 @@ static inline void nf_conntrack_get(struct nf_conntrack *nfct) if (nfct) atomic_inc(&nfct->use); } +#endif +#ifdef NET_SKBUFF_NF_DEFRAG_NEEDED static inline void nf_conntrack_get_reasm(struct sk_buff *skb) { if (skb) @@ -2085,6 +2094,8 @@ static inline void nf_reset(struct sk_buff *skb) #if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE) nf_conntrack_put(skb->nfct); skb->nfct = NULL; +#endif +#ifdef NET_SKBUFF_NF_DEFRAG_NEEDED nf_conntrack_put_reasm(skb->nfct_reasm); skb->nfct_reasm = NULL; #endif @@ -2101,6 +2112,8 @@ static inline void __nf_copy(struct sk_buff *dst, const struct sk_buff *src) dst->nfct = src->nfct; nf_conntrack_get(src->nfct); dst->nfctinfo = src->nfctinfo; +#endif +#ifdef NET_SKBUFF_NF_DEFRAG_NEEDED dst->nfct_reasm = src->nfct_reasm; nf_conntrack_get_reasm(src->nfct_reasm); #endif @@ -2114,6 +2127,8 @@ static inline void nf_copy(struct sk_buff *dst, const struct sk_buff *src) { #if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE) nf_conntrack_put(dst->nfct); +#endif +#ifdef NET_SKBUFF_NF_DEFRAG_NEEDED nf_conntrack_put_reasm(dst->nfct_reasm); #endif #ifdef CONFIG_BRIDGE_NETFILTER -- cgit v1.2.3 From 6fed05c9c9812b5882bc708f4da4fa8d5df2875c Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Wed, 12 Jan 2011 22:03:20 +0100 Subject: ACPI / PM: Fix build problems for !CONFIG_ACPI related to NVS rework The recent rework of the NVS saving/restoring code introduced two build issues for !CONFIG_ACPI, a warning in drivers/acpi/internal.h and an error in arch/x86/kernel/e820.c. Fix them by providing suitable static inline definitions of the relevant functions. Signed-off-by: Rafael J. Wysocki Acked-by: Randy Dunlap Signed-off-by: Len Brown --- include/linux/acpi.h | 19 ++++++++++--------- 1 file changed, 10 insertions(+), 9 deletions(-) (limited to 'include/linux') diff --git a/include/linux/acpi.h b/include/linux/acpi.h index fa7ed6a983d0..eb176bb1b15b 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -254,15 +254,6 @@ void __init acpi_old_suspend_ordering(void); void __init acpi_nvs_nosave(void); #endif /* CONFIG_PM_SLEEP */ -#ifdef CONFIG_ACPI_SLEEP -int suspend_nvs_register(unsigned long start, unsigned long size); -#else -static inline int suspend_nvs_register(unsigned long a, unsigned long b) -{ - return 0; -} -#endif - struct acpi_osc_context { char *uuid_str; /* uuid string */ int rev; @@ -361,4 +352,14 @@ static inline int acpi_table_parse(char *id, return -1; } #endif /* !CONFIG_ACPI */ + +#ifdef CONFIG_ACPI_SLEEP +int suspend_nvs_register(unsigned long start, unsigned long size); +#else +static inline int suspend_nvs_register(unsigned long a, unsigned long b) +{ + return 0; +} +#endif + #endif /*_LINUX_ACPI_H*/ -- cgit v1.2.3 From da995a8aee044bc5d0847e19e351cd48a2cb8bcc Mon Sep 17 00:00:00 2001 From: Aleksey Senin Date: Thu, 2 Dec 2010 11:44:49 +0000 Subject: IB/mlx4: Handle protocol field in multicast table The newest device firmware stores IB vs. Ethernet protocol in two bits in members_count field of multicast group table (0: Infiniband, 1: Ethernet). When changing the QP members count for a multicast group, it important not to reset this information. When calling multicast attach first time, the protocol type should be specified. In this patch we always set it IB, but in the future we will handle Ethernet too. When looking for a QP, the protocol type shoud be checked too. Signed-off-by: Aleksey Senin Signed-off-by: Roland Dreier --- include/linux/mlx4/device.h | 10 ++++++++-- include/linux/mlx4/driver.h | 6 +----- 2 files changed, 9 insertions(+), 7 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h index a7b15bc7648e..049214642036 100644 --- a/include/linux/mlx4/device.h +++ b/include/linux/mlx4/device.h @@ -144,6 +144,11 @@ enum { MLX4_STAT_RATE_OFFSET = 5 }; +enum mlx4_protocol { + MLX4_PROTOCOL_IB, + MLX4_PROTOCOL_EN, +}; + enum { MLX4_MTT_FLAG_PRESENT = 1 }; @@ -500,8 +505,9 @@ int mlx4_INIT_PORT(struct mlx4_dev *dev, int port); int mlx4_CLOSE_PORT(struct mlx4_dev *dev, int port); int mlx4_multicast_attach(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16], - int block_mcast_loopback); -int mlx4_multicast_detach(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16]); + int block_mcast_loopback, enum mlx4_protocol protocol); +int mlx4_multicast_detach(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16], + enum mlx4_protocol protocol); int mlx4_register_mac(struct mlx4_dev *dev, u8 port, u64 mac, int *index); void mlx4_unregister_mac(struct mlx4_dev *dev, u8 port, int index); diff --git a/include/linux/mlx4/driver.h b/include/linux/mlx4/driver.h index f407cd4bfb34..e1eebf78caba 100644 --- a/include/linux/mlx4/driver.h +++ b/include/linux/mlx4/driver.h @@ -34,6 +34,7 @@ #define MLX4_DRIVER_H #include +#include struct mlx4_dev; @@ -44,11 +45,6 @@ enum mlx4_dev_event { MLX4_DEV_EVENT_PORT_REINIT, }; -enum mlx4_protocol { - MLX4_PROTOCOL_IB, - MLX4_PROTOCOL_EN, -}; - struct mlx4_interface { void * (*add) (struct mlx4_dev *dev); void (*remove)(struct mlx4_dev *dev, void *context); -- cgit v1.2.3 From 6c0f3af72cb1622a66962a1180c36ef8c41be8e2 Mon Sep 17 00:00:00 2001 From: Sage Weil Date: Tue, 16 Nov 2010 11:14:34 -0800 Subject: ceph: add dir_layout to inode Add a ceph_dir_layout to the inode, and calculate dentry hash values based on the parent directory's specified dir_hash function. This is needed because the old default Linux dcache hash function is extremely week and leads to a poor distribution of files among dir fragments. Signed-off-by: Sage Weil --- include/linux/ceph/ceph_fs.h | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ceph/ceph_fs.h b/include/linux/ceph/ceph_fs.h index c3c74aef289d..09dcc0c2ffd5 100644 --- a/include/linux/ceph/ceph_fs.h +++ b/include/linux/ceph/ceph_fs.h @@ -43,6 +43,10 @@ #define CEPH_FEATURE_NOSRCADDR (1<<1) #define CEPH_FEATURE_MONCLOCKCHECK (1<<2) #define CEPH_FEATURE_FLOCK (1<<3) +#define CEPH_FEATURE_SUBSCRIBE2 (1<<4) +#define CEPH_FEATURE_MONNAMES (1<<5) +#define CEPH_FEATURE_RECONNECT_SEQ (1<<6) +#define CEPH_FEATURE_DIRLAYOUTHASH (1<<7) /* @@ -55,10 +59,10 @@ struct ceph_file_layout { __le32 fl_stripe_count; /* over this many objects */ __le32 fl_object_size; /* until objects are this big, then move to new objects */ - __le32 fl_cas_hash; /* 0 = none; 1 = sha256 */ + __le32 fl_cas_hash; /* UNUSED. 0 = none; 1 = sha256 */ /* pg -> disk layout */ - __le32 fl_object_stripe_unit; /* for per-object parity, if any */ + __le32 fl_object_stripe_unit; /* UNUSED. for per-object parity, if any */ /* object -> pg layout */ __le32 fl_pg_preferred; /* preferred primary for pg (-1 for none) */ @@ -69,6 +73,12 @@ struct ceph_file_layout { int ceph_file_layout_is_valid(const struct ceph_file_layout *layout); +struct ceph_dir_layout { + __u8 dl_dir_hash; /* see ceph_hash.h for ids */ + __u8 dl_unused1; + __u16 dl_unused2; + __u32 dl_unused3; +} __attribute__ ((packed)); /* crypto algorithms */ #define CEPH_CRYPTO_NONE 0x0 @@ -457,7 +467,7 @@ struct ceph_mds_reply_inode { struct ceph_timespec rctime; struct ceph_frag_tree_head fragtree; /* (must be at end of struct) */ } __attribute__ ((packed)); -/* followed by frag array, then symlink string, then xattr blob */ +/* followed by frag array, symlink string, dir layout, xattr blob */ /* reply_lease follows dname, and reply_inode */ struct ceph_mds_reply_lease { -- cgit v1.2.3 From f363e45fd1184219b472ea549cb7e192e24ef4d2 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Mon, 3 Jan 2011 14:49:46 +0100 Subject: net/ceph: make ceph_msgr_wq non-reentrant ceph messenger code does a rather complex dancing around multithread workqueue to make sure the same work item isn't executed concurrently on different CPUs. This restriction can be provided by workqueue with WQ_NON_REENTRANT. Make ceph_msgr_wq non-reentrant workqueue with the default concurrency level and remove the QUEUED/BUSY logic. * This removes backoff handling in con_work() but it couldn't reliably block execution of con_work() to begin with - queue_con() can be called after the work started but before BUSY is set. It seems that it was an optimization for a rather cold path and can be safely removed. * The number of concurrent work items is bound by the number of connections and connetions are independent from each other. With the default concurrency level, different connections will be executed independently. Signed-off-by: Tejun Heo Cc: Sage Weil Cc: ceph-devel@vger.kernel.org Signed-off-by: Sage Weil --- include/linux/ceph/messenger.h | 5 ----- 1 file changed, 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ceph/messenger.h b/include/linux/ceph/messenger.h index a108b425fee2..c3011beac30d 100644 --- a/include/linux/ceph/messenger.h +++ b/include/linux/ceph/messenger.h @@ -110,17 +110,12 @@ struct ceph_msg_pos { /* * ceph_connection state bit flags - * - * QUEUED and BUSY are used together to ensure that only a single - * thread is currently opening, reading or writing data to the socket. */ #define LOSSYTX 0 /* we can close channel or drop messages on errors */ #define CONNECTING 1 #define NEGOTIATING 2 #define KEEPALIVE_PENDING 3 #define WRITE_PENDING 4 /* we have data ready to send */ -#define QUEUED 5 /* there is work queued on this connection */ -#define BUSY 6 /* work is being done */ #define STANDBY 8 /* no outgoing messages, socket closed. we keep * the ceph_connection around to maintain shared * state with the peer. */ -- cgit v1.2.3 From c8aebb0c9f8c7471643d5f8ba68328de8013005f Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sat, 18 Dec 2010 10:22:30 -0500 Subject: per-superblock default ->d_op Signed-off-by: Al Viro --- include/linux/fs.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index f84d9928bdb1..3e4c27486e74 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1423,6 +1423,7 @@ struct super_block { * generic_show_options() */ char __rcu *s_options; + const struct dentry_operations *s_d_op; /* default d_op for dentries */ }; extern struct timespec current_fs_time(struct super_block *sb); -- cgit v1.2.3 From 9501e4c48e1561443e1a16c2c9917ec6c63118a4 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Wed, 12 Jan 2011 16:25:02 -0500 Subject: switch coda Coda ->d_revalidate() actually checks for root, ->d_delete() is irrelevant. So we can use the same d_op for all coda dentries Signed-off-by: Al Viro --- include/linux/coda_linux.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/coda_linux.h b/include/linux/coda_linux.h index 4ccc59c1ea82..490c56b40864 100644 --- a/include/linux/coda_linux.h +++ b/include/linux/coda_linux.h @@ -27,6 +27,8 @@ extern const struct inode_operations coda_dir_inode_operations; extern const struct inode_operations coda_file_inode_operations; extern const struct inode_operations coda_ioctl_inode_operations; +extern const struct dentry_operations coda_dentry_operations; + extern const struct address_space_operations coda_file_aops; extern const struct address_space_operations coda_symlink_aops; -- cgit v1.2.3 From 31a203df9c109480fc6d48ba0a68763e89199acb Mon Sep 17 00:00:00 2001 From: Al Viro Date: Wed, 12 Jan 2011 16:36:09 -0500 Subject: take coda-private headers out of include/linux Signed-off-by: Al Viro --- include/linux/coda_cache.h | 22 ---------- include/linux/coda_fs_i.h | 58 -------------------------- include/linux/coda_linux.h | 101 --------------------------------------------- 3 files changed, 181 deletions(-) delete mode 100644 include/linux/coda_cache.h delete mode 100644 include/linux/coda_fs_i.h delete mode 100644 include/linux/coda_linux.h (limited to 'include/linux') diff --git a/include/linux/coda_cache.h b/include/linux/coda_cache.h deleted file mode 100644 index c910b5eb1ceb..000000000000 --- a/include/linux/coda_cache.h +++ /dev/null @@ -1,22 +0,0 @@ -/* Coda filesystem -- Linux Minicache - * - * Copyright (C) 1989 - 1997 Carnegie Mellon University - * - * Carnegie Mellon University encourages users of this software to - * contribute improvements to the Coda project. Contact Peter Braam - * - */ - -#ifndef _CFSNC_HEADER_ -#define _CFSNC_HEADER_ - -/* credential cache */ -void coda_cache_enter(struct inode *inode, int mask); -void coda_cache_clear_inode(struct inode *); -void coda_cache_clear_all(struct super_block *sb); -int coda_cache_check(struct inode *inode, int mask); - -/* for downcalls and attributes and lookups */ -void coda_flag_inode_children(struct inode *inode, int flag); - -#endif /* _CFSNC_HEADER_ */ diff --git a/include/linux/coda_fs_i.h b/include/linux/coda_fs_i.h deleted file mode 100644 index e35071b1de0e..000000000000 --- a/include/linux/coda_fs_i.h +++ /dev/null @@ -1,58 +0,0 @@ -/* - * coda_fs_i.h - * - * Copyright (C) 1998 Carnegie Mellon University - * - */ - -#ifndef _LINUX_CODA_FS_I -#define _LINUX_CODA_FS_I - -#include -#include -#include -#include - -/* - * coda fs inode data - * c_lock protects accesses to c_flags, c_mapcount, c_cached_epoch, c_uid and - * c_cached_perm. - * vfs_inode is set only when the inode is created and never changes. - * c_fid is set when the inode is created and should be considered immutable. - */ -struct coda_inode_info { - struct CodaFid c_fid; /* Coda identifier */ - u_short c_flags; /* flags (see below) */ - unsigned int c_mapcount; /* nr of times this inode is mapped */ - unsigned int c_cached_epoch; /* epoch for cached permissions */ - vuid_t c_uid; /* fsuid for cached permissions */ - unsigned int c_cached_perm; /* cached access permissions */ - spinlock_t c_lock; - struct inode vfs_inode; -}; - -/* - * coda fs file private data - */ -#define CODA_MAGIC 0xC0DAC0DA -struct coda_file_info { - int cfi_magic; /* magic number */ - struct file *cfi_container; /* container file for this cnode */ - unsigned int cfi_mapcount; /* nr of times this file is mapped */ -}; - -#define CODA_FTOC(file) ((struct coda_file_info *)((file)->private_data)) - -/* flags */ -#define C_VATTR 0x1 /* Validity of vattr in inode */ -#define C_FLUSH 0x2 /* used after a flush */ -#define C_DYING 0x4 /* from venus (which died) */ -#define C_PURGE 0x8 - -int coda_cnode_make(struct inode **, struct CodaFid *, struct super_block *); -struct inode *coda_iget(struct super_block *sb, struct CodaFid *fid, struct coda_vattr *attr); -int coda_cnode_makectl(struct inode **inode, struct super_block *sb); -struct inode *coda_fid_to_inode(struct CodaFid *fid, struct super_block *sb); -void coda_replace_fid(struct inode *, struct CodaFid *, struct CodaFid *); - -#endif diff --git a/include/linux/coda_linux.h b/include/linux/coda_linux.h deleted file mode 100644 index 490c56b40864..000000000000 --- a/include/linux/coda_linux.h +++ /dev/null @@ -1,101 +0,0 @@ -/* - * Coda File System, Linux Kernel module - * - * Original version, adapted from cfs_mach.c, (C) Carnegie Mellon University - * Linux modifications (C) 1996, Peter J. Braam - * Rewritten for Linux 2.1 (C) 1997 Carnegie Mellon University - * - * Carnegie Mellon University encourages users of this software to - * contribute improvements to the Coda project. - */ - -#ifndef _LINUX_CODA_FS -#define _LINUX_CODA_FS - -#include -#include -#include -#include -#include -#include -#include -#include -#include - -/* operations */ -extern const struct inode_operations coda_dir_inode_operations; -extern const struct inode_operations coda_file_inode_operations; -extern const struct inode_operations coda_ioctl_inode_operations; - -extern const struct dentry_operations coda_dentry_operations; - -extern const struct address_space_operations coda_file_aops; -extern const struct address_space_operations coda_symlink_aops; - -extern const struct file_operations coda_dir_operations; -extern const struct file_operations coda_file_operations; -extern const struct file_operations coda_ioctl_operations; - -/* operations shared over more than one file */ -int coda_open(struct inode *i, struct file *f); -int coda_release(struct inode *i, struct file *f); -int coda_permission(struct inode *inode, int mask, unsigned int flags); -int coda_revalidate_inode(struct dentry *); -int coda_getattr(struct vfsmount *, struct dentry *, struct kstat *); -int coda_setattr(struct dentry *, struct iattr *); - -/* this file: heloers */ -char *coda_f2s(struct CodaFid *f); -int coda_isroot(struct inode *i); -int coda_iscontrol(const char *name, size_t length); - -void coda_vattr_to_iattr(struct inode *, struct coda_vattr *); -void coda_iattr_to_vattr(struct iattr *, struct coda_vattr *); -unsigned short coda_flags_to_cflags(unsigned short); - -/* sysctl.h */ -void coda_sysctl_init(void); -void coda_sysctl_clean(void); - -#define CODA_ALLOC(ptr, cast, size) do { \ - if (size < PAGE_SIZE) \ - ptr = kmalloc((unsigned long) size, GFP_KERNEL); \ - else \ - ptr = (cast)vmalloc((unsigned long) size); \ - if (!ptr) \ - printk("kernel malloc returns 0 at %s:%d\n", __FILE__, __LINE__); \ - else memset( ptr, 0, size ); \ -} while (0) - - -#define CODA_FREE(ptr,size) \ - do { if (size < PAGE_SIZE) kfree((ptr)); else vfree((ptr)); } while (0) - -/* inode to cnode access functions */ - -static inline struct coda_inode_info *ITOC(struct inode *inode) -{ - return list_entry(inode, struct coda_inode_info, vfs_inode); -} - -static __inline__ struct CodaFid *coda_i2f(struct inode *inode) -{ - return &(ITOC(inode)->c_fid); -} - -static __inline__ char *coda_i2s(struct inode *inode) -{ - return coda_f2s(&(ITOC(inode)->c_fid)); -} - -/* this will not zap the inode away */ -static __inline__ void coda_flag_inode(struct inode *inode, int flag) -{ - struct coda_inode_info *cii = ITOC(inode); - - spin_lock(&cii->c_lock); - cii->c_flags |= flag; - spin_unlock(&cii->c_lock); -} - -#endif -- cgit v1.2.3 From c74a1cbb3cac348f276fabc381758f5b0b4713b2 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Wed, 12 Jan 2011 16:59:34 -0500 Subject: pass default dentry_operations to mount_pseudo() Signed-off-by: Al Viro --- include/linux/fs.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index 3e4c27486e74..c0701288d204 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1835,7 +1835,9 @@ struct super_block *sget(struct file_system_type *type, int (*set)(struct super_block *,void *), void *data); extern struct dentry *mount_pseudo(struct file_system_type *, char *, - const struct super_operations *ops, unsigned long); + const struct super_operations *ops, + const struct dentry_operations *dops, + unsigned long); extern void simple_set_mnt(struct vfsmount *mnt, struct super_block *sb); static inline void sb_mark_dirty(struct super_block *sb) -- cgit v1.2.3 From 0378c4051a621303ae919f1cee832206a4c1aa68 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Wed, 12 Jan 2011 17:25:03 -0500 Subject: switch ncpfs merge dentry_operations for root and non-root Signed-off-by: Al Viro --- include/linux/ncp_fs.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/ncp_fs.h b/include/linux/ncp_fs.h index 1c27f201c856..2d79c8a58598 100644 --- a/include/linux/ncp_fs.h +++ b/include/linux/ncp_fs.h @@ -204,7 +204,7 @@ void ncp_update_inode2(struct inode *, struct ncp_entry_info *); /* linux/fs/ncpfs/dir.c */ extern const struct inode_operations ncp_dir_inode_operations; extern const struct file_operations ncp_dir_operations; -extern const struct dentry_operations ncp_root_dentry_operations; +extern const struct dentry_operations ncp_dentry_operations; int ncp_conn_logged_in(struct super_block *); int ncp_date_dos2unix(__le16 time, __le16 date); void ncp_date_unix2dos(int unix_date, __le16 * time, __le16 * date); -- cgit v1.2.3 From 32c419d95f3d1da891ab9bd032a214ee05b94ed4 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Wed, 12 Jan 2011 17:37:47 -0500 Subject: move internal-only parts of ncpfs headers to fs/ncpfs Signed-off-by: Al Viro --- include/linux/ncp_fs.h | 100 ---------------------------- include/linux/ncp_fs_i.h | 29 -------- include/linux/ncp_fs_sb.h | 164 ---------------------------------------------- include/linux/ncp_mount.h | 22 ------- 4 files changed, 315 deletions(-) delete mode 100644 include/linux/ncp_fs_i.h delete mode 100644 include/linux/ncp_fs_sb.h (limited to 'include/linux') diff --git a/include/linux/ncp_fs.h b/include/linux/ncp_fs.h index 2d79c8a58598..e13eefef0653 100644 --- a/include/linux/ncp_fs.h +++ b/include/linux/ncp_fs.h @@ -143,104 +143,4 @@ struct ncp_nls_ioctl #define NCP_MAXPATHLEN 255 #define NCP_MAXNAMELEN 14 -#ifdef __KERNEL__ - -#include -#include - -/* define because it is easy to change PRINTK to {*}PRINTK */ -#define PRINTK(format, args...) printk(KERN_DEBUG format , ## args) - -#undef NCPFS_PARANOIA -#ifdef NCPFS_PARANOIA -#define PPRINTK(format, args...) PRINTK(format , ## args) -#else -#define PPRINTK(format, args...) -#endif - -#ifndef DEBUG_NCP -#define DEBUG_NCP 0 -#endif -#if DEBUG_NCP > 0 -#define DPRINTK(format, args...) PRINTK(format , ## args) -#else -#define DPRINTK(format, args...) -#endif -#if DEBUG_NCP > 1 -#define DDPRINTK(format, args...) PRINTK(format , ## args) -#else -#define DDPRINTK(format, args...) -#endif - -#define NCP_MAX_RPC_TIMEOUT (6*HZ) - - -struct ncp_entry_info { - struct nw_info_struct i; - ino_t ino; - int opened; - int access; - unsigned int volume; - __u8 file_handle[6]; -}; - -static inline struct ncp_server *NCP_SBP(const struct super_block *sb) -{ - return sb->s_fs_info; -} - -#define NCP_SERVER(inode) NCP_SBP((inode)->i_sb) -static inline struct ncp_inode_info *NCP_FINFO(const struct inode *inode) -{ - return container_of(inode, struct ncp_inode_info, vfs_inode); -} - -/* linux/fs/ncpfs/inode.c */ -int ncp_notify_change(struct dentry *, struct iattr *); -struct inode *ncp_iget(struct super_block *, struct ncp_entry_info *); -void ncp_update_inode(struct inode *, struct ncp_entry_info *); -void ncp_update_inode2(struct inode *, struct ncp_entry_info *); - -/* linux/fs/ncpfs/dir.c */ -extern const struct inode_operations ncp_dir_inode_operations; -extern const struct file_operations ncp_dir_operations; -extern const struct dentry_operations ncp_dentry_operations; -int ncp_conn_logged_in(struct super_block *); -int ncp_date_dos2unix(__le16 time, __le16 date); -void ncp_date_unix2dos(int unix_date, __le16 * time, __le16 * date); - -/* linux/fs/ncpfs/ioctl.c */ -long ncp_ioctl(struct file *, unsigned int, unsigned long); -long ncp_compat_ioctl(struct file *, unsigned int, unsigned long); - -/* linux/fs/ncpfs/sock.c */ -int ncp_request2(struct ncp_server *server, int function, - void* reply, int max_reply_size); -static inline int ncp_request(struct ncp_server *server, int function) { - return ncp_request2(server, function, server->packet, server->packet_size); -} -int ncp_connect(struct ncp_server *server); -int ncp_disconnect(struct ncp_server *server); -void ncp_lock_server(struct ncp_server *server); -void ncp_unlock_server(struct ncp_server *server); - -/* linux/fs/ncpfs/symlink.c */ -#if defined(CONFIG_NCPFS_EXTRAS) || defined(CONFIG_NCPFS_NFS_NS) -extern const struct address_space_operations ncp_symlink_aops; -int ncp_symlink(struct inode*, struct dentry*, const char*); -#endif - -/* linux/fs/ncpfs/file.c */ -extern const struct inode_operations ncp_file_inode_operations; -extern const struct file_operations ncp_file_operations; -int ncp_make_open(struct inode *, int); - -/* linux/fs/ncpfs/mmap.c */ -int ncp_mmap(struct file *, struct vm_area_struct *); - -/* linux/fs/ncpfs/ncplib_kernel.c */ -int ncp_make_closed(struct inode *); - -#endif /* __KERNEL__ */ - #endif /* _LINUX_NCP_FS_H */ diff --git a/include/linux/ncp_fs_i.h b/include/linux/ncp_fs_i.h deleted file mode 100644 index 4b0bec477846..000000000000 --- a/include/linux/ncp_fs_i.h +++ /dev/null @@ -1,29 +0,0 @@ -/* - * ncp_fs_i.h - * - * Copyright (C) 1995 Volker Lendecke - * - */ - -#ifndef _LINUX_NCP_FS_I -#define _LINUX_NCP_FS_I - -/* - * This is the ncpfs part of the inode structure. This must contain - * all the information we need to work with an inode after creation. - */ -struct ncp_inode_info { - __le32 dirEntNum; - __le32 DosDirNum; - __u8 volNumber; - __le32 nwattr; - struct mutex open_mutex; - atomic_t opened; - int access; - int flags; -#define NCPI_KLUDGE_SYMLINK 0x0001 - __u8 file_handle[6]; - struct inode vfs_inode; -}; - -#endif /* _LINUX_NCP_FS_I */ diff --git a/include/linux/ncp_fs_sb.h b/include/linux/ncp_fs_sb.h deleted file mode 100644 index d64b0e894336..000000000000 --- a/include/linux/ncp_fs_sb.h +++ /dev/null @@ -1,164 +0,0 @@ -/* - * ncp_fs_sb.h - * - * Copyright (C) 1995, 1996 by Volker Lendecke - * - */ - -#ifndef _NCP_FS_SB -#define _NCP_FS_SB - -#include -#include -#include -#include -#include - -#ifdef __KERNEL__ - -#include - -#define NCP_DEFAULT_OPTIONS 0 /* 2 for packet signatures */ - -struct sock; - -struct ncp_server { - - struct ncp_mount_data_kernel m; /* Nearly all of the mount data is of - interest for us later, so we store - it completely. */ - - __u8 name_space[NCP_NUMBER_OF_VOLUMES + 2]; - - struct file *ncp_filp; /* File pointer to ncp socket */ - struct socket *ncp_sock;/* ncp socket */ - struct file *info_filp; - struct socket *info_sock; - - u8 sequence; - u8 task; - u16 connection; /* Remote connection number */ - - u8 completion; /* Status message from server */ - u8 conn_status; /* Bit 4 = 1 ==> Server going down, no - requests allowed anymore. - Bit 0 = 1 ==> Server is down. */ - - int buffer_size; /* Negotiated bufsize */ - - int reply_size; /* Size of last reply */ - - int packet_size; - unsigned char *packet; /* Here we prepare requests and - receive replies */ - unsigned char *txbuf; /* Storage for current request */ - unsigned char *rxbuf; /* Storage for reply to current request */ - - int lock; /* To prevent mismatch in protocols. */ - struct mutex mutex; - - int current_size; /* for packet preparation */ - int has_subfunction; - int ncp_reply_size; - - int root_setuped; - struct mutex root_setup_lock; - - /* info for packet signing */ - int sign_wanted; /* 1=Server needs signed packets */ - int sign_active; /* 0=don't do signing, 1=do */ - char sign_root[8]; /* generated from password and encr. key */ - char sign_last[16]; - - /* Authentication info: NDS or BINDERY, username */ - struct { - int auth_type; - size_t object_name_len; - void* object_name; - int object_type; - } auth; - /* Password info */ - struct { - size_t len; - void* data; - } priv; - struct rw_semaphore auth_rwsem; - - /* nls info: codepage for volume and charset for I/O */ - struct nls_table *nls_vol; - struct nls_table *nls_io; - - /* maximum age in jiffies */ - atomic_t dentry_ttl; - - /* miscellaneous */ - unsigned int flags; - - spinlock_t requests_lock; /* Lock accesses to tx.requests, tx.creq and rcv.creq when STREAM mode */ - - void (*data_ready)(struct sock* sk, int len); - void (*error_report)(struct sock* sk); - void (*write_space)(struct sock* sk); /* STREAM mode only */ - struct { - struct work_struct tq; /* STREAM/DGRAM: data/error ready */ - struct ncp_request_reply* creq; /* STREAM/DGRAM: awaiting reply from this request */ - struct mutex creq_mutex; /* DGRAM only: lock accesses to rcv.creq */ - - unsigned int state; /* STREAM only: receiver state */ - struct { - __u32 magic __packed; - __u32 len __packed; - __u16 type __packed; - __u16 p1 __packed; - __u16 p2 __packed; - __u16 p3 __packed; - __u16 type2 __packed; - } buf; /* STREAM only: temporary buffer */ - unsigned char* ptr; /* STREAM only: pointer to data */ - size_t len; /* STREAM only: length of data to receive */ - } rcv; - struct { - struct list_head requests; /* STREAM only: queued requests */ - struct work_struct tq; /* STREAM only: transmitter ready */ - struct ncp_request_reply* creq; /* STREAM only: currently transmitted entry */ - } tx; - struct timer_list timeout_tm; /* DGRAM only: timeout timer */ - struct work_struct timeout_tq; /* DGRAM only: associated queue, we run timers from process context */ - int timeout_last; /* DGRAM only: current timeout length */ - int timeout_retries; /* DGRAM only: retries left */ - struct { - size_t len; - __u8 data[128]; - } unexpected_packet; - struct backing_dev_info bdi; -}; - -extern void ncp_tcp_rcv_proc(struct work_struct *work); -extern void ncp_tcp_tx_proc(struct work_struct *work); -extern void ncpdgram_rcv_proc(struct work_struct *work); -extern void ncpdgram_timeout_proc(struct work_struct *work); -extern void ncpdgram_timeout_call(unsigned long server); -extern void ncp_tcp_data_ready(struct sock* sk, int len); -extern void ncp_tcp_write_space(struct sock* sk); -extern void ncp_tcp_error_report(struct sock* sk); - -#define NCP_FLAG_UTF8 1 - -#define NCP_CLR_FLAG(server, flag) ((server)->flags &= ~(flag)) -#define NCP_SET_FLAG(server, flag) ((server)->flags |= (flag)) -#define NCP_IS_FLAG(server, flag) ((server)->flags & (flag)) - -static inline int ncp_conn_valid(struct ncp_server *server) -{ - return ((server->conn_status & 0x11) == 0); -} - -static inline void ncp_invalidate_conn(struct ncp_server *server) -{ - server->conn_status |= 0x01; -} - -#endif /* __KERNEL__ */ - -#endif - diff --git a/include/linux/ncp_mount.h b/include/linux/ncp_mount.h index a2b549eb1eca..dfcbea2d889f 100644 --- a/include/linux/ncp_mount.h +++ b/include/linux/ncp_mount.h @@ -68,26 +68,4 @@ struct ncp_mount_data_v4 { #define NCP_MOUNT_VERSION_V5 (5) /* Text only */ -#ifdef __KERNEL__ - -struct ncp_mount_data_kernel { - unsigned long flags; /* NCP_MOUNT_* flags */ - unsigned int int_flags; /* internal flags */ -#define NCP_IMOUNT_LOGGEDIN_POSSIBLE 0x0001 - __kernel_uid32_t mounted_uid; /* Who may umount() this filesystem? */ - struct pid *wdog_pid; /* Who cares for our watchdog packets? */ - unsigned int ncp_fd; /* The socket to the ncp port */ - unsigned int time_out; /* How long should I wait after - sending a NCP request? */ - unsigned int retry_count; /* And how often should I retry? */ - unsigned char mounted_vol[NCP_VOLNAME_LEN + 1]; - __kernel_uid32_t uid; - __kernel_gid32_t gid; - __kernel_mode_t file_mode; - __kernel_mode_t dir_mode; - int info_fd; -}; - -#endif /* __KERNEL__ */ - #endif -- cgit v1.2.3 From 79124f18b335172e1916075c633745e12dae1dac Mon Sep 17 00:00:00 2001 From: Josef Bacik Date: Wed, 17 Nov 2010 20:46:15 -0500 Subject: fs: add hole punching to fallocate Hole punching has already been implemented by XFS and OCFS2, and has the potential to be implemented on both BTRFS and EXT4 so we need a generic way to get to this feature. The simplest way in my mind is to add FALLOC_FL_PUNCH_HOLE to fallocate() since it already looks like the normal fallocate() operation. I've tested this patch with XFS and BTRFS to make sure XFS did what it's supposed to do and that BTRFS failed like it was supposed to. Thank you, Signed-off-by: Josef Bacik Signed-off-by: Al Viro --- include/linux/falloc.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/falloc.h b/include/linux/falloc.h index 3c155107d61f..73e0b628e058 100644 --- a/include/linux/falloc.h +++ b/include/linux/falloc.h @@ -2,6 +2,7 @@ #define _FALLOC_H_ #define FALLOC_FL_KEEP_SIZE 0x01 /* default is extend size */ +#define FALLOC_FL_PUNCH_HOLE 0x02 /* de-allocates range */ #ifdef __KERNEL__ -- cgit v1.2.3 From 5df15196a2bbf16ca4c6a797ec00ff36d0d5c179 Mon Sep 17 00:00:00 2001 From: Jan Engelhardt Date: Sun, 26 Dec 2010 10:22:22 +0100 Subject: netfilter: xt_comment: drop unneeded unsigned qualifier Since a string is stored, and not something like a MAC address that would rely on (un)signedness, drop the qualifier. Signed-off-by: Jan Engelhardt Signed-off-by: Pablo Neira Ayuso --- include/linux/netfilter/xt_comment.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/netfilter/xt_comment.h b/include/linux/netfilter/xt_comment.h index eacfedc6b5d0..0ea5e79f5bd7 100644 --- a/include/linux/netfilter/xt_comment.h +++ b/include/linux/netfilter/xt_comment.h @@ -4,7 +4,7 @@ #define XT_MAX_COMMENT_LEN 256 struct xt_comment_info { - unsigned char comment[XT_MAX_COMMENT_LEN]; + char comment[XT_MAX_COMMENT_LEN]; }; #endif /* XT_COMMENT_H */ -- cgit v1.2.3 From b017900aac4a158b9bf7ffdcb8a369a91115b3e4 Mon Sep 17 00:00:00 2001 From: Patrick McHardy Date: Wed, 15 Dec 2010 09:46:26 +0100 Subject: netfilter: xt_conntrack: support matching on port ranges Add a new revision 3 that contains port ranges for all of origsrc, origdst, replsrc and repldst. The high ports are appended to the original v2 data structure to allow sharing most of the code with v1 and v2. Use of the revision specific port matching function is made dependant on par->match->revision. Signed-off-by: Patrick McHardy Signed-off-by: Pablo Neira Ayuso --- include/linux/netfilter/xt_conntrack.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'include/linux') diff --git a/include/linux/netfilter/xt_conntrack.h b/include/linux/netfilter/xt_conntrack.h index 54f47a2f6152..74b904d8f99c 100644 --- a/include/linux/netfilter/xt_conntrack.h +++ b/include/linux/netfilter/xt_conntrack.h @@ -58,4 +58,19 @@ struct xt_conntrack_mtinfo2 { __u16 state_mask, status_mask; }; +struct xt_conntrack_mtinfo3 { + union nf_inet_addr origsrc_addr, origsrc_mask; + union nf_inet_addr origdst_addr, origdst_mask; + union nf_inet_addr replsrc_addr, replsrc_mask; + union nf_inet_addr repldst_addr, repldst_mask; + __u32 expires_min, expires_max; + __u16 l4proto; + __u16 origsrc_port, origdst_port; + __u16 replsrc_port, repldst_port; + __u16 match_flags, invert_flags; + __u16 state_mask, status_mask; + __u16 origsrc_port_high, origdst_port_high; + __u16 replsrc_port_high, repldst_port_high; +}; + #endif /*_XT_CONNTRACK_H*/ -- cgit v1.2.3 From 255d0dc34068a976550ce555e153c0bfcfec7cc6 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Sat, 18 Dec 2010 18:35:15 +0100 Subject: netfilter: x_table: speedup compat operations One iptables invocation with 135000 rules takes 35 seconds of cpu time on a recent server, using a 32bit distro and a 64bit kernel. We eventually trigger NMI/RCU watchdog. INFO: rcu_sched_state detected stall on CPU 3 (t=6000 jiffies) COMPAT mode has quadratic behavior and consume 16 bytes of memory per rule. Switch the xt_compat algos to use an array instead of list, and use a binary search to locate an offset in the sorted array. This halves memory need (8 bytes per rule), and removes quadratic behavior [ O(N*N) -> O(N*log2(N)) ] Time of iptables goes from 35 s to 150 ms. Signed-off-by: Eric Dumazet Signed-off-by: Pablo Neira Ayuso --- include/linux/netfilter/x_tables.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/netfilter/x_tables.h b/include/linux/netfilter/x_tables.h index 742bec051440..0f04d985b41c 100644 --- a/include/linux/netfilter/x_tables.h +++ b/include/linux/netfilter/x_tables.h @@ -611,8 +611,9 @@ struct _compat_xt_align { extern void xt_compat_lock(u_int8_t af); extern void xt_compat_unlock(u_int8_t af); -extern int xt_compat_add_offset(u_int8_t af, unsigned int offset, short delta); +extern int xt_compat_add_offset(u_int8_t af, unsigned int offset, int delta); extern void xt_compat_flush_offsets(u_int8_t af); +extern void xt_compat_init_offsets(u_int8_t af, unsigned int number); extern int xt_compat_calc_jump(u_int8_t af, unsigned int offset); extern int xt_compat_match_offset(const struct xt_match *match); -- cgit v1.2.3 From 6faee60a4e82075853a437831768cc9e2e563e4e Mon Sep 17 00:00:00 2001 From: Florian Westphal Date: Mon, 20 Dec 2010 15:57:47 +0100 Subject: netfilter: ebt_ip6: allow matching on ipv6-icmp types/codes To avoid adding a new match revision icmp type/code are stored in the sport/dport area. Signed-off-by: Florian Westphal Reviewed-by: Holger Eitzenberger Reviewed-by: Bart De Schuymer Signed-off-by: Pablo Neira Ayuso --- include/linux/netfilter_bridge/ebt_ip6.h | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/netfilter_bridge/ebt_ip6.h b/include/linux/netfilter_bridge/ebt_ip6.h index e5de98701519..22af18a3c16b 100644 --- a/include/linux/netfilter_bridge/ebt_ip6.h +++ b/include/linux/netfilter_bridge/ebt_ip6.h @@ -18,8 +18,11 @@ #define EBT_IP6_PROTO 0x08 #define EBT_IP6_SPORT 0x10 #define EBT_IP6_DPORT 0x20 +#define EBT_IP6_ICMP6 0x40 + #define EBT_IP6_MASK (EBT_IP6_SOURCE | EBT_IP6_DEST | EBT_IP6_TCLASS |\ - EBT_IP6_PROTO | EBT_IP6_SPORT | EBT_IP6_DPORT) + EBT_IP6_PROTO | EBT_IP6_SPORT | EBT_IP6_DPORT | \ + EBT_IP6_ICMP6) #define EBT_IP6_MATCH "ip6" /* the same values are used for the invflags */ @@ -32,8 +35,14 @@ struct ebt_ip6_info { uint8_t protocol; uint8_t bitmask; uint8_t invflags; - uint16_t sport[2]; - uint16_t dport[2]; + union { + uint16_t sport[2]; + uint8_t icmpv6_type[2]; + }; + union { + uint16_t dport[2]; + uint8_t icmpv6_code[2]; + }; }; #endif -- cgit v1.2.3 From 278ad4fd0e7517f1d74b8fc1c8347cad34a09b02 Mon Sep 17 00:00:00 2001 From: Samu Onkalo Date: Wed, 12 Jan 2011 16:59:17 -0800 Subject: leds: leds-lp5523: modify the way of setting led device name Currently all leds channels begins with string lp5523. Patch adds a possibility to provide name via platform data. This makes it possible to have several chips without overlapping sysfs names. Signed-off-by: Samu Onkalo Cc: Arun Murthy Cc: Ilkka Koskinen Cc: Richard Purdie Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/leds-lp5523.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/leds-lp5523.h b/include/linux/leds-lp5523.h index 796747637b80..2694289babd0 100644 --- a/include/linux/leds-lp5523.h +++ b/include/linux/leds-lp5523.h @@ -42,6 +42,7 @@ struct lp5523_platform_data { int (*setup_resources)(void); void (*release_resources)(void); void (*enable)(bool state); + const char *label; }; #endif /* __LINUX_LP5523_H */ -- cgit v1.2.3 From 61a83932b8b3f1624d753e06aab2fdf0a119e100 Mon Sep 17 00:00:00 2001 From: Arun Murthy Date: Wed, 12 Jan 2011 16:59:20 -0800 Subject: leds-lp5521: modify the way of setting led device name Currently the led device name is fetched from the device_type in I2C_BOARD_INFO which comes from the platform data. This name is in turn used to create an entry in sysfs. If there exists two or more lp5521 on a particular platform, the device_type in I2C_BOARD_INFO has to be the same, else lp5521 driver probe wont be called and if used so, results in run time warning "cannot create sysfs with same name" and hence a failure. The name that is used to create sysfs entry is to be passed by the struct led_platform_data. Hence adding an element of type const char * and change in lp5521 driver to use this name in creating the led device if present else use the name obtained by I2C_BOARD_INFO. Signed-off-by: Arun Murthy Acked-by: Samu Onkalo Cc: Ilkka Koskinen Cc: Richard Purdie Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/leds-lp5521.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/leds-lp5521.h b/include/linux/leds-lp5521.h index 38368d785f08..fd548d2a8775 100644 --- a/include/linux/leds-lp5521.h +++ b/include/linux/leds-lp5521.h @@ -42,6 +42,7 @@ struct lp5521_platform_data { int (*setup_resources)(void); void (*release_resources)(void); void (*enable)(bool state); + const char *label; }; #endif /* __LINUX_LP5521_H */ -- cgit v1.2.3 From 04c6862c055fb687c90d9652f32c11a063df15cf Mon Sep 17 00:00:00 2001 From: Seiji Aguchi Date: Wed, 12 Jan 2011 16:59:30 -0800 Subject: kmsg_dump: add kmsg_dump() calls to the reboot, halt, poweroff and emergency_restart paths We need to know the reason why system rebooted in support service. However, we can't inform our customers of the reason because final messages are lost on current Linux kernel. This patch improves the situation above because the final messages are saved by adding kmsg_dump() to reboot, halt, poweroff and emergency_restart path. Signed-off-by: Seiji Aguchi Cc: David Woodhouse Cc: Marco Stornelli Reviewed-by: Artem Bityutskiy Reviewed-by: KOSAKI Motohiro Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/kmsg_dump.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/kmsg_dump.h b/include/linux/kmsg_dump.h index 24b44145a886..2a0d7d651dc3 100644 --- a/include/linux/kmsg_dump.h +++ b/include/linux/kmsg_dump.h @@ -18,6 +18,10 @@ enum kmsg_dump_reason { KMSG_DUMP_OOPS, KMSG_DUMP_PANIC, KMSG_DUMP_KEXEC, + KMSG_DUMP_RESTART, + KMSG_DUMP_HALT, + KMSG_DUMP_POWEROFF, + KMSG_DUMP_EMERG, }; /** -- cgit v1.2.3 From 71a9048448de302d1e968f336de01060d02fae71 Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Wed, 12 Jan 2011 16:59:35 -0800 Subject: include/linux/kernel.h: abs(): fix handling of 32-bit unsigneds on 64-bit Michal reports: In the framebuffer subsystem the abs() macro is often used as a part of the calculation of a Manhattan metric, which in turn is used as a measure of similarity between video modes. The arguments of abs() are sometimes unsigned numbers. This worked fine until commit a49c59c0 ("Make sure the value in abs() does not get truncated if it is greater than 2^32:) , which changed the definition of abs() to prevent truncation. As a result of this change, in the following piece of code: u32 a = 0, b = 1; u32 c = abs(a - b); 'c' will end up with a value of 0xffffffff instead of the expected 0x1. A problem caused by this change and visible by the end user is that framebuffer drivers relying on functions from modedb.c will fail to find high resolution video modes similar to that explicitly requested by the user if an exact match cannot be found (see e.g. Fix this by special-casing `long' types within abs(). This patch reduces x86_64 code size a bit - drivers/video/uvesafb.o shrunk by 15 bytes, presumably because it is doing abs() on 4-byte quantities, and expanding those to 8-byte longs adds code. testcase: #define oldabs(x) ({ \ long __x = (x); \ (__x < 0) ? -__x : __x; \ }) #define newabs(x) ({ \ long ret; \ if (sizeof(x) == sizeof(long)) { \ long __x = (x); \ ret = (__x < 0) ? -__x : __x; \ } else { \ int __x = (x); \ ret = (__x < 0) ? -__x : __x; \ } \ ret; \ }) typedef unsigned int u32; main() { u32 a = 0; u32 b = 1; u32 oldc = oldabs(a - b); u32 newc = newabs(a - b); printf("%u %u\n", oldc, newc); } akpm:/home/akpm> gcc t.c akpm:/home/akpm> ./a.out 4294967295 1 Reported-by: Michal Januszewski Cc: Rolf Eike Beer Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/kernel.h | 19 ++++++++++++++++--- 1 file changed, 16 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/kernel.h b/include/linux/kernel.h index d0fbc043de60..57dac7022b63 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -143,9 +143,22 @@ extern int _cond_resched(void); #define might_sleep_if(cond) do { if (cond) might_sleep(); } while (0) -#define abs(x) ({ \ - long __x = (x); \ - (__x < 0) ? -__x : __x; \ +/* + * abs() handles unsigned and signed longs, ints, shorts and chars. For all + * input types abs() returns a signed long. + * abs() should not be used for 64-bit types (s64, u64, long long) - use abs64() + * for those. + */ +#define abs(x) ({ \ + long ret; \ + if (sizeof(x) == sizeof(long)) { \ + long __x = (x); \ + ret = (__x < 0) ? -__x : __x; \ + } else { \ + int __x = (x); \ + ret = (__x < 0) ? -__x : __x; \ + } \ + ret; \ }) #define abs64(x) ({ \ -- cgit v1.2.3 From 049763db6cd002cb447a5684b5a543a69d647d42 Mon Sep 17 00:00:00 2001 From: Alexander Shishkin Date: Wed, 12 Jan 2011 16:59:35 -0800 Subject: toshiba.h: hide a function prototypes behind __KERNEL__ macro Currently, tosh_smm() prototype is present in a header file exported to userland. This patch fixes it. Signed-off-by: Alexander Shishkin Cc: Jonathan Buzzard Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/toshiba.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/toshiba.h b/include/linux/toshiba.h index 6a7c4edf0e13..772dedbc3a22 100644 --- a/include/linux/toshiba.h +++ b/include/linux/toshiba.h @@ -33,6 +33,8 @@ typedef struct { unsigned int edi __attribute__ ((packed)); } SMMRegisters; +#ifdef __KERNEL__ int tosh_smm(SMMRegisters *regs); +#endif /* __KERNEL__ */ #endif -- cgit v1.2.3 From 1725310324163f56fea71bb77c5d6e88f9ce4192 Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Wed, 12 Jan 2011 16:59:37 -0800 Subject: include/linux/unaligned/packed_struct.h: use __packed Cc: Will Newton Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/unaligned/packed_struct.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/unaligned/packed_struct.h b/include/linux/unaligned/packed_struct.h index c9a6abd972a1..c0d817de4df2 100644 --- a/include/linux/unaligned/packed_struct.h +++ b/include/linux/unaligned/packed_struct.h @@ -3,9 +3,9 @@ #include -struct __una_u16 { u16 x; } __attribute__((packed)); -struct __una_u32 { u32 x; } __attribute__((packed)); -struct __una_u64 { u64 x; } __attribute__((packed)); +struct __una_u16 { u16 x; } __packed; +struct __una_u32 { u32 x; } __packed; +struct __una_u64 { u64 x; } __packed; static inline u16 __get_unaligned_cpu16(const void *p) { -- cgit v1.2.3 From 455cd5ab305c90ffc422dd2e0fb634730942b257 Mon Sep 17 00:00:00 2001 From: Dan Rosenberg Date: Wed, 12 Jan 2011 16:59:41 -0800 Subject: kptr_restrict for hiding kernel pointers from unprivileged users Add the %pK printk format specifier and the /proc/sys/kernel/kptr_restrict sysctl. The %pK format specifier is designed to hide exposed kernel pointers, specifically via /proc interfaces. Exposing these pointers provides an easy target for kernel write vulnerabilities, since they reveal the locations of writable structures containing easily triggerable function pointers. The behavior of %pK depends on the kptr_restrict sysctl. If kptr_restrict is set to 0, no deviation from the standard %p behavior occurs. If kptr_restrict is set to 1, the default, if the current user (intended to be a reader via seq_printf(), etc.) does not have CAP_SYSLOG (currently in the LSM tree), kernel pointers using %pK are printed as 0's. If kptr_restrict is set to 2, kernel pointers using %pK are printed as 0's regardless of privileges. Replacing with 0's was chosen over the default "(null)", which cannot be parsed by userland %p, which expects "(nil)". [akpm@linux-foundation.org: check for IRQ context when !kptr_restrict, save an indent level, s/WARN/WARN_ONCE/] [akpm@linux-foundation.org: coding-style fixup] [randy.dunlap@oracle.com: fix kernel/sysctl.c warning] Signed-off-by: Dan Rosenberg Signed-off-by: Randy Dunlap Cc: James Morris Cc: Eric Dumazet Cc: Thomas Graf Cc: Eugene Teo Cc: Kees Cook Cc: Ingo Molnar Cc: David S. Miller Cc: Peter Zijlstra Cc: Eric Paris Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/printk.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/printk.h b/include/linux/printk.h index b772ca5fbdf0..9adfba6ec28a 100644 --- a/include/linux/printk.h +++ b/include/linux/printk.h @@ -83,6 +83,7 @@ extern bool printk_timed_ratelimit(unsigned long *caller_jiffies, extern int printk_delay_msec; extern int dmesg_restrict; +extern int kptr_restrict; /* * Print a one-time message (analogous to WARN_ONCE() et al): -- cgit v1.2.3 From a9747cc3addf81e56ea9b8a4374fbdb9d1737eae Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Wed, 12 Jan 2011 16:59:43 -0800 Subject: include/linux/printk.h: move console functions and variables together There are many uses of printk_once(KERN_, so add pr__once macros to avoid printk_once(KERN_ pr_fmt(fmt). Add an #ifdef CONFIG_PRINTK for print_hex_dump and static inline void functions for the #else cases to reduce embedded code size. Neaten and organize the rest of the code. This patch: Move console functions and variables together. Signed-off-by: Joe Perches Cc: Matt Mackall Cc: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/printk.h | 22 +++++++++++----------- 1 file changed, 11 insertions(+), 11 deletions(-) (limited to 'include/linux') diff --git a/include/linux/printk.h b/include/linux/printk.h index 9adfba6ec28a..bd43c727c0a0 100644 --- a/include/linux/printk.h +++ b/include/linux/printk.h @@ -29,6 +29,17 @@ extern int console_printk[]; #define minimum_console_loglevel (console_printk[2]) #define default_console_loglevel (console_printk[3]) +static inline void console_silent(void) +{ + console_loglevel = 0; +} + +static inline void console_verbose(void) +{ + if (console_loglevel) + console_loglevel = 15; +} + struct va_format { const char *fmt; va_list *va; @@ -131,17 +142,6 @@ extern void printk_tick(void); extern void asmlinkage __attribute__((format(printf, 1, 2))) early_printk(const char *fmt, ...); -static inline void console_silent(void) -{ - console_loglevel = 0; -} - -static inline void console_verbose(void) -{ - if (console_loglevel) - console_loglevel = 15; -} - extern void dump_stack(void) __cold; enum { -- cgit v1.2.3 From 7d1e91aeb317c3c747369d8594fc1b742c265a07 Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Wed, 12 Jan 2011 16:59:45 -0800 Subject: include/linux/printk.h: use space after #define Signed-off-by: Joe Perches Cc: Matt Mackall Cc: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/printk.h | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) (limited to 'include/linux') diff --git a/include/linux/printk.h b/include/linux/printk.h index bd43c727c0a0..b71131116878 100644 --- a/include/linux/printk.h +++ b/include/linux/printk.h @@ -4,14 +4,14 @@ extern const char linux_banner[]; extern const char linux_proc_banner[]; -#define KERN_EMERG "<0>" /* system is unusable */ -#define KERN_ALERT "<1>" /* action must be taken immediately */ -#define KERN_CRIT "<2>" /* critical conditions */ -#define KERN_ERR "<3>" /* error conditions */ -#define KERN_WARNING "<4>" /* warning conditions */ -#define KERN_NOTICE "<5>" /* normal but significant condition */ -#define KERN_INFO "<6>" /* informational */ -#define KERN_DEBUG "<7>" /* debug-level messages */ +#define KERN_EMERG "<0>" /* system is unusable */ +#define KERN_ALERT "<1>" /* action must be taken immediately */ +#define KERN_CRIT "<2>" /* critical conditions */ +#define KERN_ERR "<3>" /* error conditions */ +#define KERN_WARNING "<4>" /* warning conditions */ +#define KERN_NOTICE "<5>" /* normal but significant condition */ +#define KERN_INFO "<6>" /* informational */ +#define KERN_DEBUG "<7>" /* debug-level messages */ /* Use the default kernel loglevel */ #define KERN_DEFAULT "" @@ -20,7 +20,7 @@ extern const char linux_proc_banner[]; * line that had no enclosing \n). Only to be used by core/arch code * during early bootup (a continued line is not SMP-safe otherwise). */ -#define KERN_CONT "" +#define KERN_CONT "" extern int console_printk[]; -- cgit v1.2.3 From 5264f2f75d8678f3e9683042a4639baa5884bda9 Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Wed, 12 Jan 2011 16:59:45 -0800 Subject: include/linux/printk.h: use and neaten no_printk - Move no_printk above first CONFIG_PRINTK block so it can be used by printk_once. - Convert statement expression if (0) printk macros to no_printk. - Convert printk_once(x...) to more normally used (fmt, ...) fmt, ##__VA_ARGS__. - Standardize __attribute__ use. - Expand single line inline functions. - Remove space before pointer. Signed-off-by: Joe Perches Cc: Matt Mackall Cc: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/printk.h | 75 +++++++++++++++++++++++++++++--------------------- 1 file changed, 43 insertions(+), 32 deletions(-) (limited to 'include/linux') diff --git a/include/linux/printk.h b/include/linux/printk.h index b71131116878..4788c2887e65 100644 --- a/include/linux/printk.h +++ b/include/linux/printk.h @@ -76,11 +76,27 @@ struct va_format { */ #define HW_ERR "[Hardware Error]: " +/* + * Dummy printk for disabled debugging statements to use whilst maintaining + * gcc's format and side-effect checking. + */ +static inline __attribute__ ((format (printf, 1, 2))) +int no_printk(const char *fmt, ...) +{ + return 0; +} + +extern asmlinkage __attribute__ ((format (printf, 1, 2))) +void early_printk(const char *fmt, ...); + +extern int printk_needs_cpu(int cpu); +extern void printk_tick(void); + #ifdef CONFIG_PRINTK -asmlinkage int vprintk(const char *fmt, va_list args) - __attribute__ ((format (printf, 1, 0))); -asmlinkage int printk(const char * fmt, ...) - __attribute__ ((format (printf, 1, 2))) __cold; +asmlinkage __attribute__ ((format (printf, 1, 0))) +int vprintk(const char *fmt, va_list args); +asmlinkage __attribute__ ((format (printf, 1, 2))) __cold +int printk(const char *fmt, ...); /* * Please don't use printk_ratelimit(), because it shares ratelimiting state @@ -110,38 +126,34 @@ extern int kptr_restrict; void log_buf_kexec_setup(void); #else -static inline int vprintk(const char *s, va_list args) - __attribute__ ((format (printf, 1, 0))); -static inline int vprintk(const char *s, va_list args) { return 0; } -static inline int printk(const char *s, ...) - __attribute__ ((format (printf, 1, 2))); -static inline int __cold printk(const char *s, ...) { return 0; } -static inline int printk_ratelimit(void) { return 0; } -static inline bool printk_timed_ratelimit(unsigned long *caller_jiffies, \ - unsigned int interval_msec) \ - { return false; } +static inline __attribute__ ((format (printf, 1, 0))) +int vprintk(const char *s, va_list args) +{ + return 0; +} +static inline __attribute__ ((format (printf, 1, 2))) __cold +int printk(const char *s, ...) +{ + return 0; +} +static inline int printk_ratelimit(void) +{ + return 0; +} +static inline bool printk_timed_ratelimit(unsigned long *caller_jiffies, + unsigned int interval_msec) +{ + return false; +} /* No effect, but we still get type checking even in the !PRINTK case: */ -#define printk_once(x...) printk(x) +#define printk_once(fmt, ...) no_printk(fmt, ##__VA_ARGS__) static inline void log_buf_kexec_setup(void) { } #endif -/* - * Dummy printk for disabled debugging statements to use whilst maintaining - * gcc's format and side-effect checking. - */ -static inline __attribute__ ((format (printf, 1, 2))) -int no_printk(const char *s, ...) { return 0; } - -extern int printk_needs_cpu(int cpu); -extern void printk_tick(void); - -extern void asmlinkage __attribute__((format(printf, 1, 2))) - early_printk(const char *fmt, ...); - extern void dump_stack(void) __cold; enum { @@ -186,7 +198,7 @@ extern void print_hex_dump_bytes(const char *prefix_str, int prefix_type, printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) #else #define pr_devel(fmt, ...) \ - ({ if (0) printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__); 0; }) + no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) #endif /* If you are writing a driver, please use dev_dbg instead */ @@ -199,7 +211,7 @@ extern void print_hex_dump_bytes(const char *prefix_str, int prefix_type, dynamic_pr_debug(fmt, ##__VA_ARGS__) #else #define pr_debug(fmt, ...) \ - ({ if (0) printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__); 0; }) + no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) #endif /* @@ -242,8 +254,7 @@ extern void print_hex_dump_bytes(const char *prefix_str, int prefix_type, printk_ratelimited(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) #else #define pr_debug_ratelimited(fmt, ...) \ - ({ if (0) printk_ratelimited(KERN_DEBUG pr_fmt(fmt), \ - ##__VA_ARGS__); 0; }) + no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) #endif #endif -- cgit v1.2.3 From 16cb839f13324978bd58082e69de81a711802b11 Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Wed, 12 Jan 2011 16:59:46 -0800 Subject: include/linux/printk.h: add pr__once macros - Move printk_once definitions and add an #ifdef CONFIG_PRINTK - Add pr__once so printks can use pr_fmt Signed-off-by: Joe Perches Cc: Matt Mackall Cc: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/printk.h | 59 +++++++++++++++++++++++++++++++++++++------------- 1 file changed, 44 insertions(+), 15 deletions(-) (limited to 'include/linux') diff --git a/include/linux/printk.h b/include/linux/printk.h index 4788c2887e65..6442156707c9 100644 --- a/include/linux/printk.h +++ b/include/linux/printk.h @@ -112,18 +112,6 @@ extern int printk_delay_msec; extern int dmesg_restrict; extern int kptr_restrict; -/* - * Print a one-time message (analogous to WARN_ONCE() et al): - */ -#define printk_once(x...) ({ \ - static bool __print_once; \ - \ - if (!__print_once) { \ - __print_once = true; \ - printk(x); \ - } \ -}) - void log_buf_kexec_setup(void); #else static inline __attribute__ ((format (printf, 1, 0))) @@ -146,9 +134,6 @@ static inline bool printk_timed_ratelimit(unsigned long *caller_jiffies, return false; } -/* No effect, but we still get type checking even in the !PRINTK case: */ -#define printk_once(fmt, ...) no_printk(fmt, ##__VA_ARGS__) - static inline void log_buf_kexec_setup(void) { } @@ -214,6 +199,50 @@ extern void print_hex_dump_bytes(const char *prefix_str, int prefix_type, no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) #endif +/* + * Print a one-time message (analogous to WARN_ONCE() et al): + */ + +#ifdef CONFIG_PRINTK +#define printk_once(fmt, ...) \ +({ \ + static bool __print_once; \ + \ + if (!__print_once) { \ + __print_once = true; \ + printk(fmt, ##__VA_ARGS__); \ + } \ +}) +#else +#define printk_once(fmt, ...) \ + no_printk(fmt, ##__VA_ARGS__) +#endif + +#define pr_emerg_once(fmt, ...) \ + printk_once(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__) +#define pr_alert_once(fmt, ...) \ + printk_once(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__) +#define pr_crit_once(fmt, ...) \ + printk_once(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__) +#define pr_err_once(fmt, ...) \ + printk_once(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__) +#define pr_warn_once(fmt, ...) \ + printk_once(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__) +#define pr_notice_once(fmt, ...) \ + printk_once(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__) +#define pr_info_once(fmt, ...) \ + printk_once(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__) +#define pr_cont_once(fmt, ...) \ + printk_once(KERN_CONT pr_fmt(fmt), ##__VA_ARGS__) +/* If you are writing a driver, please use dev_dbg instead */ +#if defined(DEBUG) +#define pr_debug_once(fmt, ...) \ + printk_once(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) +#else +#define pr_debug_once(fmt, ...) \ + no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) +#endif + /* * ratelimited messages with local ratelimit_state, * no local ratelimit_state used in the !PRINTK case -- cgit v1.2.3 From ac83ed687837a44c6e46fb16411fb0d299fffd80 Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Wed, 12 Jan 2011 16:59:47 -0800 Subject: include/linux/printk.h lib/hexdump.c: neatening and add CONFIG_PRINTK guard - Move prototypes and align arguments. - Add CONFIG_PRINTK guard for print_hex functions Signed-off-by: Joe Perches Cc: Matt Mackall Cc: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/printk.h | 42 ++++++++++++++++++++++++++++-------------- 1 file changed, 28 insertions(+), 14 deletions(-) (limited to 'include/linux') diff --git a/include/linux/printk.h b/include/linux/printk.h index 6442156707c9..e96bd41491bd 100644 --- a/include/linux/printk.h +++ b/include/linux/printk.h @@ -141,20 +141,6 @@ static inline void log_buf_kexec_setup(void) extern void dump_stack(void) __cold; -enum { - DUMP_PREFIX_NONE, - DUMP_PREFIX_ADDRESS, - DUMP_PREFIX_OFFSET -}; -extern void hex_dump_to_buffer(const void *buf, size_t len, - int rowsize, int groupsize, - char *linebuf, size_t linebuflen, bool ascii); -extern void print_hex_dump(const char *level, const char *prefix_str, - int prefix_type, int rowsize, int groupsize, - const void *buf, size_t len, bool ascii); -extern void print_hex_dump_bytes(const char *prefix_str, int prefix_type, - const void *buf, size_t len); - #ifndef pr_fmt #define pr_fmt(fmt) fmt #endif @@ -286,4 +272,32 @@ extern void print_hex_dump_bytes(const char *prefix_str, int prefix_type, no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) #endif + +enum { + DUMP_PREFIX_NONE, + DUMP_PREFIX_ADDRESS, + DUMP_PREFIX_OFFSET +}; +extern void hex_dump_to_buffer(const void *buf, size_t len, + int rowsize, int groupsize, + char *linebuf, size_t linebuflen, bool ascii); +#ifdef CONFIG_PRINTK +extern void print_hex_dump(const char *level, const char *prefix_str, + int prefix_type, int rowsize, int groupsize, + const void *buf, size_t len, bool ascii); +extern void print_hex_dump_bytes(const char *prefix_str, int prefix_type, + const void *buf, size_t len); +#else +static inline void print_hex_dump(const char *level, const char *prefix_str, + int prefix_type, int rowsize, int groupsize, + const void *buf, size_t len, bool ascii) +{ +} +static inline void print_hex_dump_bytes(const char *prefix_str, int prefix_type, + const void *buf, size_t len) +{ +} + +#endif + #endif -- cgit v1.2.3 From 6ec42a56e258462cda510421aecc2680d3642e21 Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Wed, 12 Jan 2011 16:59:47 -0800 Subject: include/linux/printk.h: organize printk_ratelimited macros - Use no_printk for !CONFIG_PRINTK printk_ratelimited. - Whitespace cleanup. Signed-off-by: Joe Perches Cc: Matt Mackall Cc: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/printk.h | 25 ++++++++++++------------- 1 file changed, 12 insertions(+), 13 deletions(-) (limited to 'include/linux') diff --git a/include/linux/printk.h b/include/linux/printk.h index e96bd41491bd..d30f579c6f97 100644 --- a/include/linux/printk.h +++ b/include/linux/printk.h @@ -234,7 +234,8 @@ extern void dump_stack(void) __cold; * no local ratelimit_state used in the !PRINTK case */ #ifdef CONFIG_PRINTK -#define printk_ratelimited(fmt, ...) ({ \ +#define printk_ratelimited(fmt, ...) \ +({ \ static DEFINE_RATELIMIT_STATE(_rs, \ DEFAULT_RATELIMIT_INTERVAL, \ DEFAULT_RATELIMIT_BURST); \ @@ -243,36 +244,34 @@ extern void dump_stack(void) __cold; printk(fmt, ##__VA_ARGS__); \ }) #else -/* No effect, but we still get type checking even in the !PRINTK case: */ -#define printk_ratelimited printk +#define printk_ratelimited(fmt, ...) \ + no_printk(fmt, ##__VA_ARGS__) #endif -#define pr_emerg_ratelimited(fmt, ...) \ +#define pr_emerg_ratelimited(fmt, ...) \ printk_ratelimited(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__) -#define pr_alert_ratelimited(fmt, ...) \ +#define pr_alert_ratelimited(fmt, ...) \ printk_ratelimited(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__) -#define pr_crit_ratelimited(fmt, ...) \ +#define pr_crit_ratelimited(fmt, ...) \ printk_ratelimited(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__) -#define pr_err_ratelimited(fmt, ...) \ +#define pr_err_ratelimited(fmt, ...) \ printk_ratelimited(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__) -#define pr_warning_ratelimited(fmt, ...) \ +#define pr_warn_ratelimited(fmt, ...) \ printk_ratelimited(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__) -#define pr_warn_ratelimited pr_warning_ratelimited -#define pr_notice_ratelimited(fmt, ...) \ +#define pr_notice_ratelimited(fmt, ...) \ printk_ratelimited(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__) -#define pr_info_ratelimited(fmt, ...) \ +#define pr_info_ratelimited(fmt, ...) \ printk_ratelimited(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__) /* no pr_cont_ratelimited, don't do that... */ /* If you are writing a driver, please use dev_dbg instead */ #if defined(DEBUG) -#define pr_debug_ratelimited(fmt, ...) \ +#define pr_debug_ratelimited(fmt, ...) \ printk_ratelimited(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) #else #define pr_debug_ratelimited(fmt, ...) \ no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) #endif - enum { DUMP_PREFIX_NONE, DUMP_PREFIX_ADDRESS, -- cgit v1.2.3 From a3f938bf6f5746d39e013d03ba13118a393fee96 Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Wed, 12 Jan 2011 16:59:48 -0800 Subject: include/linux/printk.h: use tab not spaces for indent Signed-off-by: Joe Perches Cc: Matt Mackall Cc: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/printk.h | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) (limited to 'include/linux') diff --git a/include/linux/printk.h b/include/linux/printk.h index d30f579c6f97..ee048e77e1ae 100644 --- a/include/linux/printk.h +++ b/include/linux/printk.h @@ -146,20 +146,20 @@ extern void dump_stack(void) __cold; #endif #define pr_emerg(fmt, ...) \ - printk(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__) + printk(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__) #define pr_alert(fmt, ...) \ - printk(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__) + printk(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__) #define pr_crit(fmt, ...) \ - printk(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__) + printk(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__) #define pr_err(fmt, ...) \ - printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__) + printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__) #define pr_warning(fmt, ...) \ - printk(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__) + printk(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__) #define pr_warn pr_warning #define pr_notice(fmt, ...) \ - printk(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__) + printk(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__) #define pr_info(fmt, ...) \ - printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__) + printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__) #define pr_cont(fmt, ...) \ printk(KERN_CONT fmt, ##__VA_ARGS__) -- cgit v1.2.3 From 52bd19f7691b2ea6433aef0ef94c08c57efd7e79 Mon Sep 17 00:00:00 2001 From: Robin Holt Date: Wed, 12 Jan 2011 17:00:01 -0800 Subject: epoll: convert max_user_watches to long On a 16TB machine, max_user_watches has an integer overflow. Convert it to use a long and handle the associated fallout. Signed-off-by: Robin Holt Cc: "Eric W. Biederman" Acked-by: Davide Libenzi Cc: Pekka Enberg Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/sched.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index abc527aa8550..96e23215e276 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -683,7 +683,7 @@ struct user_struct { atomic_t fanotify_listeners; #endif #ifdef CONFIG_EPOLL - atomic_t epoll_watches; /* The number of file descriptors currently watched */ + atomic_long_t epoll_watches; /* The number of file descriptors currently watched */ #endif #ifdef CONFIG_POSIX_MQUEUE /* protected by mq_lock */ -- cgit v1.2.3 From f670d0ecda73b7438eec9ed108680bc5f5362ad8 Mon Sep 17 00:00:00 2001 From: Mikael Pettersson Date: Wed, 12 Jan 2011 17:00:02 -0800 Subject: binfmt_elf: cleanups This cleans up a few bits in binfmt_elf.c and binfmts.h: - the hasvdso field in struct linux_binfmt is unused, so remove it and the only initialization of it - the elf_map CPP symbol is not defined anywhere in the kernel, so remove an unnecessary #ifndef elf_map - reduce excessive indentation in elf_format's initializer - add missing spaces, remove extraneous spaces No functional changes, but tested on x86 (32 and 64 bit), powerpc (32 and 64 bit), sparc64, arm, and alpha. Signed-off-by: Mikael Pettersson Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/binfmts.h | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/binfmts.h b/include/linux/binfmts.h index 64a7114a9394..c3d6512eded1 100644 --- a/include/linux/binfmts.h +++ b/include/linux/binfmts.h @@ -25,7 +25,7 @@ struct pt_regs; /* * This structure is used to hold the arguments that are used when loading binaries. */ -struct linux_binprm{ +struct linux_binprm { char buf[BINPRM_BUF_SIZE]; #ifdef CONFIG_MMU struct vm_area_struct *vma; @@ -93,7 +93,6 @@ struct linux_binfmt { int (*load_shlib)(struct file *); int (*core_dump)(struct coredump_params *cprm); unsigned long min_coredump; /* minimal dump size */ - int hasvdso; }; extern int __register_binfmt(struct linux_binfmt *fmt, int insert); @@ -113,7 +112,7 @@ extern void unregister_binfmt(struct linux_binfmt *); extern int prepare_binprm(struct linux_binprm *); extern int __must_check remove_arg_zero(struct linux_binprm *); -extern int search_binary_handler(struct linux_binprm *,struct pt_regs *); +extern int search_binary_handler(struct linux_binprm *, struct pt_regs *); extern int flush_old_exec(struct linux_binprm * bprm); extern void setup_new_exec(struct linux_binprm * bprm); -- cgit v1.2.3 From 1b912c1bca5c162e611384fe7d39c916e081701a Mon Sep 17 00:00:00 2001 From: Andres Salomon Date: Wed, 12 Jan 2011 17:00:10 -0800 Subject: drivers/gpio/cs5535-gpio.c: add some additional cs5535-specific GPIO functionality This adds (well, re-adds actually) handling for events/IRQs through cs5535 GPIOs. In the wild and wooly world of CS5535, setup_event() is for assigning an IRQ to a GPIO filter/event pair, and set_irq() sets up the pair to trigger IRQs. These should really only be used in highly platform-specific drivers (such as OLPC's DCON driver). Sadly, because set_irq() uses MSRs, this causes the driver to become X86-specific. Signed-off-by: Andres Salomon Signed-off-by: Daniel Drake Cc: Grant Likely Cc: Greg KH Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/cs5535.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/cs5535.h b/include/linux/cs5535.h index d5a1d4810b80..213cc50b5809 100644 --- a/include/linux/cs5535.h +++ b/include/linux/cs5535.h @@ -111,6 +111,8 @@ static inline int cs5535_has_vsa2(void) void cs5535_gpio_set(unsigned offset, unsigned int reg); void cs5535_gpio_clear(unsigned offset, unsigned int reg); int cs5535_gpio_isset(unsigned offset, unsigned int reg); +int cs5535_gpio_set_irq(unsigned group, unsigned irq); +void cs5535_gpio_setup_event(unsigned offset, int pair, int pme); /* MFGPTs */ -- cgit v1.2.3 From 7637c9259f7b6dd841471ccf1120d484b7364f99 Mon Sep 17 00:00:00 2001 From: Andres Salomon Date: Wed, 12 Jan 2011 17:00:11 -0800 Subject: drivers/staging/olpc_dcon: convert to new cs5535 gpio API Drop the old geode_gpio crud, as well as the raw outl() calls; instead, use the Linux GPIO API where possible, and the cs5535_gpio API in other places. Note that we don't actually clean up the driver properly yet (once loaded, it always remains loaded). That'll come later.. This patch is necessary for building the driver. Signed-off-by: Andres Salomon Cc: Greg KH Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/cs5535.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/cs5535.h b/include/linux/cs5535.h index 213cc50b5809..6fe2114f8ad2 100644 --- a/include/linux/cs5535.h +++ b/include/linux/cs5535.h @@ -103,11 +103,15 @@ static inline int cs5535_has_vsa2(void) #define GPIO_POSITIVE_EDGE_STS 0x48 #define GPIO_NEGATIVE_EDGE_STS 0x4C +#define GPIO_FLTR7_AMOUNT 0xD8 + #define GPIO_MAP_X 0xE0 #define GPIO_MAP_Y 0xE4 #define GPIO_MAP_Z 0xE8 #define GPIO_MAP_W 0xEC +#define GPIO_FE7_SEL 0xF7 + void cs5535_gpio_set(unsigned offset, unsigned int reg); void cs5535_gpio_clear(unsigned offset, unsigned int reg); int cs5535_gpio_isset(unsigned offset, unsigned int reg); -- cgit v1.2.3 From 0fdae42d361bbb431ca0ab0efed5126a94821177 Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Wed, 12 Jan 2011 17:00:23 -0800 Subject: gpiolib: annotate gpio-intialization with __must_check Because GPIOs can have crucial functions especially in embedded systems, we are better safe than sorry regarding their configuration. For gpio_request, the documentation is simply enforced: "The return value of gpio_request() must be checked." For gpio_direction_* and gpio_request_*, we now act accordingly. Signed-off-by: Wolfram Sang Cc: David Brownell Cc: Greg KH Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/gpio.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/gpio.h b/include/linux/gpio.h index e41f7dd1ae67..1d5214a89110 100644 --- a/include/linux/gpio.h +++ b/include/linux/gpio.h @@ -29,7 +29,7 @@ static inline int gpio_is_valid(int number) return 0; } -static inline int gpio_request(unsigned gpio, const char *label) +static inline int __must_check gpio_request(unsigned gpio, const char *label) { return -ENOSYS; } @@ -42,12 +42,12 @@ static inline void gpio_free(unsigned gpio) WARN_ON(1); } -static inline int gpio_direction_input(unsigned gpio) +static inline int __must_check gpio_direction_input(unsigned gpio) { return -ENOSYS; } -static inline int gpio_direction_output(unsigned gpio, int value) +static inline int __must_check gpio_direction_output(unsigned gpio, int value) { return -ENOSYS; } -- cgit v1.2.3 From 5f829e405ec4e96f711165a4a7b55c271d4363e2 Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Wed, 12 Jan 2011 17:00:24 -0800 Subject: gpiolib: add missing functions to generic fallback Signed-off-by: Wolfram Sang Cc: David Brownell Cc: Greg KH Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/gpio.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'include/linux') diff --git a/include/linux/gpio.h b/include/linux/gpio.h index 1d5214a89110..f79d67f413e4 100644 --- a/include/linux/gpio.h +++ b/include/linux/gpio.h @@ -13,6 +13,7 @@ #include struct device; +struct gpio; struct gpio_chip; /* @@ -34,6 +35,17 @@ static inline int __must_check gpio_request(unsigned gpio, const char *label) return -ENOSYS; } +static inline int __must_check gpio_request_one(unsigned gpio, + unsigned long flags, const char *label) +{ + return -ENOSYS; +} + +static inline int __must_check gpio_request_array(struct gpio *array, size_t num) +{ + return -ENOSYS; +} + static inline void gpio_free(unsigned gpio) { might_sleep(); @@ -42,6 +54,14 @@ static inline void gpio_free(unsigned gpio) WARN_ON(1); } +static inline void gpio_free_array(struct gpio *array, size_t num) +{ + might_sleep(); + + /* GPIO can never have been requested */ + WARN_ON(1); +} + static inline int __must_check gpio_direction_input(unsigned gpio) { return -ENOSYS; -- cgit v1.2.3 From e6d7202b66d99bf514c8e901db68386b1fcd6d56 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Wed, 12 Jan 2011 17:00:37 -0800 Subject: fs/char_dev.c: remove unused cdev_index() Commit 66fa12c571d3 ("ieee1394: remove the old IEEE 1394 driver stack") eliminated the only user of cdev_index(). So it can be removed too. Signed-off-by: Namhyung Kim Cc: Stefan Richter Cc: Theodore Ts'o Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/cdev.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/cdev.h b/include/linux/cdev.h index f389e319a454..fb4591977b03 100644 --- a/include/linux/cdev.h +++ b/include/linux/cdev.h @@ -28,8 +28,6 @@ int cdev_add(struct cdev *, dev_t, unsigned); void cdev_del(struct cdev *); -int cdev_index(struct inode *inode); - void cd_forget(struct inode *); extern struct backing_dev_info directly_mappable_cdev_bdi; -- cgit v1.2.3 From a93192a5d245a262dc52fa426de5b20467308a77 Mon Sep 17 00:00:00 2001 From: Alexandre Bounine Date: Wed, 12 Jan 2011 17:00:38 -0800 Subject: rapidio: use common destid storage for endpoints and switches Change code to use one storage location common for switches and endpoints. This eliminates unnecessary device type checks during basic access operations. Logic that assigns destid to RIO devices stays unchanged - as before, switches use an associated destid because they do not have their own. Signed-off-by: Alexandre Bounine Cc: Kumar Gala Cc: Matt Porter Cc: Li Yang Cc: Thomas Moll Cc: Micha Nelissen Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/rio.h | 8 +++--- include/linux/rio_drv.h | 72 +++++++++---------------------------------------- 2 files changed, 15 insertions(+), 65 deletions(-) (limited to 'include/linux') diff --git a/include/linux/rio.h b/include/linux/rio.h index 0bed941f9b13..f6e25b3a6967 100644 --- a/include/linux/rio.h +++ b/include/linux/rio.h @@ -98,7 +98,8 @@ union rio_pw_msg; * @dev: Device model device * @riores: RIO resources this device owns * @pwcback: port-write callback function for this device - * @destid: Network destination ID + * @destid: Network destination ID (or associated destid for switch) + * @hopcount: Hopcount to this device * @prev: Previous RIO device connected to the current one */ struct rio_dev { @@ -126,6 +127,7 @@ struct rio_dev { struct resource riores[RIO_MAX_DEV_RESOURCES]; int (*pwcback) (struct rio_dev *rdev, union rio_pw_msg *msg, int step); u16 destid; + u8 hopcount; struct rio_dev *prev; }; @@ -229,8 +231,6 @@ struct rio_net { * @node: Node in global list of switches * @rdev: Associated RIO device structure * @switchid: Switch ID that is unique across a network - * @hopcount: Hopcount to this switch - * @destid: Associated destid in the path * @route_table: Copy of switch routing table * @port_ok: Status of each port (one bit per port) - OK=1 or UNINIT=0 * @add_entry: Callback for switch-specific route add function @@ -247,8 +247,6 @@ struct rio_switch { struct list_head node; struct rio_dev *rdev; u16 switchid; - u16 hopcount; - u16 destid; u8 *route_table; u32 port_ok; int (*add_entry) (struct rio_mport * mport, u16 destid, u8 hopcount, diff --git a/include/linux/rio_drv.h b/include/linux/rio_drv.h index edc55da717b3..e09e565c4bce 100644 --- a/include/linux/rio_drv.h +++ b/include/linux/rio_drv.h @@ -150,16 +150,8 @@ static inline int rio_local_write_config_8(struct rio_mport *port, u32 offset, static inline int rio_read_config_32(struct rio_dev *rdev, u32 offset, u32 * data) { - u8 hopcount = 0xff; - u16 destid = rdev->destid; - - if (rdev->rswitch) { - destid = rdev->rswitch->destid; - hopcount = rdev->rswitch->hopcount; - } - - return rio_mport_read_config_32(rdev->net->hport, destid, hopcount, - offset, data); + return rio_mport_read_config_32(rdev->net->hport, rdev->destid, + rdev->hopcount, offset, data); }; /** @@ -174,16 +166,8 @@ static inline int rio_read_config_32(struct rio_dev *rdev, u32 offset, static inline int rio_write_config_32(struct rio_dev *rdev, u32 offset, u32 data) { - u8 hopcount = 0xff; - u16 destid = rdev->destid; - - if (rdev->rswitch) { - destid = rdev->rswitch->destid; - hopcount = rdev->rswitch->hopcount; - } - - return rio_mport_write_config_32(rdev->net->hport, destid, hopcount, - offset, data); + return rio_mport_write_config_32(rdev->net->hport, rdev->destid, + rdev->hopcount, offset, data); }; /** @@ -198,16 +182,8 @@ static inline int rio_write_config_32(struct rio_dev *rdev, u32 offset, static inline int rio_read_config_16(struct rio_dev *rdev, u32 offset, u16 * data) { - u8 hopcount = 0xff; - u16 destid = rdev->destid; - - if (rdev->rswitch) { - destid = rdev->rswitch->destid; - hopcount = rdev->rswitch->hopcount; - } - - return rio_mport_read_config_16(rdev->net->hport, destid, hopcount, - offset, data); + return rio_mport_read_config_16(rdev->net->hport, rdev->destid, + rdev->hopcount, offset, data); }; /** @@ -222,16 +198,8 @@ static inline int rio_read_config_16(struct rio_dev *rdev, u32 offset, static inline int rio_write_config_16(struct rio_dev *rdev, u32 offset, u16 data) { - u8 hopcount = 0xff; - u16 destid = rdev->destid; - - if (rdev->rswitch) { - destid = rdev->rswitch->destid; - hopcount = rdev->rswitch->hopcount; - } - - return rio_mport_write_config_16(rdev->net->hport, destid, hopcount, - offset, data); + return rio_mport_write_config_16(rdev->net->hport, rdev->destid, + rdev->hopcount, offset, data); }; /** @@ -245,16 +213,8 @@ static inline int rio_write_config_16(struct rio_dev *rdev, u32 offset, */ static inline int rio_read_config_8(struct rio_dev *rdev, u32 offset, u8 * data) { - u8 hopcount = 0xff; - u16 destid = rdev->destid; - - if (rdev->rswitch) { - destid = rdev->rswitch->destid; - hopcount = rdev->rswitch->hopcount; - } - - return rio_mport_read_config_8(rdev->net->hport, destid, hopcount, - offset, data); + return rio_mport_read_config_8(rdev->net->hport, rdev->destid, + rdev->hopcount, offset, data); }; /** @@ -268,16 +228,8 @@ static inline int rio_read_config_8(struct rio_dev *rdev, u32 offset, u8 * data) */ static inline int rio_write_config_8(struct rio_dev *rdev, u32 offset, u8 data) { - u8 hopcount = 0xff; - u16 destid = rdev->destid; - - if (rdev->rswitch) { - destid = rdev->rswitch->destid; - hopcount = rdev->rswitch->hopcount; - } - - return rio_mport_write_config_8(rdev->net->hport, destid, hopcount, - offset, data); + return rio_mport_write_config_8(rdev->net->hport, rdev->destid, + rdev->hopcount, offset, data); }; extern int rio_mport_send_doorbell(struct rio_mport *mport, u16 destid, -- cgit v1.2.3 From ded05782719d0f7e79af98be7cf88c7e23a90435 Mon Sep 17 00:00:00 2001 From: Alexandre Bounine Date: Wed, 12 Jan 2011 17:00:39 -0800 Subject: rapidio: integrate rio_switch into rio_dev Convert RIO switches device structures (rio_dev + rio_switch) into a single allocation unit. This change is based on the fact that RIO switches are using common RIO device objects anyway. Allocating RIO switch objects as RIO devices with added space for switch information simplifies handling of RIO switch devices. Signed-off-by: Alexandre Bounine Cc: Kumar Gala Cc: Matt Porter Cc: Li Yang Cc: Thomas Moll Cc: Micha Nelissen Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/rio.h | 82 ++++++++++++++++++++++++++--------------------------- 1 file changed, 41 insertions(+), 41 deletions(-) (limited to 'include/linux') diff --git a/include/linux/rio.h b/include/linux/rio.h index f6e25b3a6967..9b558856a8b6 100644 --- a/include/linux/rio.h +++ b/include/linux/rio.h @@ -71,8 +71,46 @@ extern struct device rio_bus; extern struct list_head rio_devices; /* list of all devices */ struct rio_mport; +struct rio_dev; union rio_pw_msg; +/** + * struct rio_switch - RIO switch info + * @node: Node in global list of switches + * @switchid: Switch ID that is unique across a network + * @route_table: Copy of switch routing table + * @port_ok: Status of each port (one bit per port) - OK=1 or UNINIT=0 + * @add_entry: Callback for switch-specific route add function + * @get_entry: Callback for switch-specific route get function + * @clr_table: Callback for switch-specific clear route table function + * @set_domain: Callback for switch-specific domain setting function + * @get_domain: Callback for switch-specific domain get function + * @em_init: Callback for switch-specific error management init function + * @em_handle: Callback for switch-specific error management handler function + * @sw_sysfs: Callback that initializes switch-specific sysfs attributes + * @nextdev: Array of per-port pointers to the next attached device + */ +struct rio_switch { + struct list_head node; + u16 switchid; + u8 *route_table; + u32 port_ok; + int (*add_entry) (struct rio_mport *mport, u16 destid, u8 hopcount, + u16 table, u16 route_destid, u8 route_port); + int (*get_entry) (struct rio_mport *mport, u16 destid, u8 hopcount, + u16 table, u16 route_destid, u8 *route_port); + int (*clr_table) (struct rio_mport *mport, u16 destid, u8 hopcount, + u16 table); + int (*set_domain) (struct rio_mport *mport, u16 destid, u8 hopcount, + u8 sw_domain); + int (*get_domain) (struct rio_mport *mport, u16 destid, u8 hopcount, + u8 *sw_domain); + int (*em_init) (struct rio_dev *dev); + int (*em_handle) (struct rio_dev *dev, u8 swport); + int (*sw_sysfs) (struct rio_dev *dev, int create); + struct rio_dev *nextdev[0]; +}; + /** * struct rio_dev - RIO device info * @global_list: Node in list of all RIO devices @@ -93,7 +131,6 @@ union rio_pw_msg; * @phys_efptr: RIO device extended features pointer * @em_efptr: RIO Error Management features pointer * @dma_mask: Mask of bits of RIO address this device implements - * @rswitch: Pointer to &struct rio_switch if valid for this device * @driver: Driver claiming this device * @dev: Device model device * @riores: RIO resources this device owns @@ -101,6 +138,7 @@ union rio_pw_msg; * @destid: Network destination ID (or associated destid for switch) * @hopcount: Hopcount to this device * @prev: Previous RIO device connected to the current one + * @rswitch: struct rio_switch (if valid for this device) */ struct rio_dev { struct list_head global_list; /* node in list of all RIO devices */ @@ -121,7 +159,6 @@ struct rio_dev { u32 phys_efptr; u32 em_efptr; u64 dma_mask; - struct rio_switch *rswitch; /* RIO switch info */ struct rio_driver *driver; /* RIO driver claiming this device */ struct device dev; /* LDM device structure */ struct resource riores[RIO_MAX_DEV_RESOURCES]; @@ -129,11 +166,13 @@ struct rio_dev { u16 destid; u8 hopcount; struct rio_dev *prev; + struct rio_switch rswitch[0]; /* RIO switch info */ }; #define rio_dev_g(n) list_entry(n, struct rio_dev, global_list) #define rio_dev_f(n) list_entry(n, struct rio_dev, net_list) #define to_rio_dev(n) container_of(n, struct rio_dev, dev) +#define sw_to_rio_dev(n) container_of(n, struct rio_dev, rswitch[0]) /** * struct rio_msg - RIO message event @@ -226,45 +265,6 @@ struct rio_net { #define RIO_SW_SYSFS_CREATE 1 /* Create switch attributes */ #define RIO_SW_SYSFS_REMOVE 0 /* Remove switch attributes */ -/** - * struct rio_switch - RIO switch info - * @node: Node in global list of switches - * @rdev: Associated RIO device structure - * @switchid: Switch ID that is unique across a network - * @route_table: Copy of switch routing table - * @port_ok: Status of each port (one bit per port) - OK=1 or UNINIT=0 - * @add_entry: Callback for switch-specific route add function - * @get_entry: Callback for switch-specific route get function - * @clr_table: Callback for switch-specific clear route table function - * @set_domain: Callback for switch-specific domain setting function - * @get_domain: Callback for switch-specific domain get function - * @em_init: Callback for switch-specific error management initialization function - * @em_handle: Callback for switch-specific error management handler function - * @sw_sysfs: Callback that initializes switch-specific sysfs attributes - * @nextdev: Array of per-port pointers to the next attached device - */ -struct rio_switch { - struct list_head node; - struct rio_dev *rdev; - u16 switchid; - u8 *route_table; - u32 port_ok; - int (*add_entry) (struct rio_mport * mport, u16 destid, u8 hopcount, - u16 table, u16 route_destid, u8 route_port); - int (*get_entry) (struct rio_mport * mport, u16 destid, u8 hopcount, - u16 table, u16 route_destid, u8 * route_port); - int (*clr_table) (struct rio_mport *mport, u16 destid, u8 hopcount, - u16 table); - int (*set_domain) (struct rio_mport *mport, u16 destid, u8 hopcount, - u8 sw_domain); - int (*get_domain) (struct rio_mport *mport, u16 destid, u8 hopcount, - u8 *sw_domain); - int (*em_init) (struct rio_dev *dev); - int (*em_handle) (struct rio_dev *dev, u8 swport); - int (*sw_sysfs) (struct rio_dev *dev, int create); - struct rio_dev *nextdev[0]; -}; - /* Low-level architecture-dependent routines */ /** -- cgit v1.2.3 From e6536927e64a2511864f2141d3e5b198b3f25ba6 Mon Sep 17 00:00:00 2001 From: Alexandre Bounine Date: Wed, 12 Jan 2011 17:00:40 -0800 Subject: rapidio: add definitions of Component Tag fields Add definition of the unique device identifier field in the component tag. RIO_CTAG_UDEVID does not take all 32 bits of the component tag value to allow future extensions to the component tag use. Selected size of the RIO_CTAG_UDEVID field (17 bits) is sufficient to accommodate maximum number of endpoints in large RIO network (16-bit id) plus switches. Signed-off-by: Alexandre Bounine Cc: Kumar Gala Cc: Matt Porter Cc: Li Yang Cc: Thomas Moll Cc: Micha Nelissen Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/rio.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/linux') diff --git a/include/linux/rio.h b/include/linux/rio.h index 9b558856a8b6..ff681ebba585 100644 --- a/include/linux/rio.h +++ b/include/linux/rio.h @@ -66,6 +66,16 @@ #define RIO_PW_MSG_SIZE 64 +/* + * A component tag value (stored in the component tag CSR) is used as device's + * unique identifier assigned during enumeration. Besides being used for + * identifying switches (which do not have device ID register), it also is used + * by error management notification and therefore has to be assigned + * to endpoints as well. + */ +#define RIO_CTAG_RESRVD 0xfffe0000 /* Reserved */ +#define RIO_CTAG_UDEVID 0x0001ffff /* Unique device identifier */ + extern struct bus_type rio_bus_type; extern struct device rio_bus; extern struct list_head rio_devices; /* list of all devices */ -- cgit v1.2.3 From 2e9d4d84847b5b05c8a049b681f15906a91e0f78 Mon Sep 17 00:00:00 2001 From: Alexandre Bounine Date: Wed, 12 Jan 2011 17:00:43 -0800 Subject: rapidio: add new idt sRIO switches Add new sRIO switch device IDs and enable a basic support for them. Signed-off-by: Alexandre Bounine Cc: Kumar Gala Cc: Matt Porter Cc: Li Yang Cc: Thomas Moll Cc: Micha Nelissen Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/rio_ids.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/rio_ids.h b/include/linux/rio_ids.h index ee7b6ada188f..7410d3365e2a 100644 --- a/include/linux/rio_ids.h +++ b/include/linux/rio_ids.h @@ -36,5 +36,7 @@ #define RIO_DID_IDTCPS10Q 0x035e #define RIO_DID_IDTCPS1848 0x0374 #define RIO_DID_IDTCPS1616 0x0379 +#define RIO_DID_IDTVPS1616 0x0377 +#define RIO_DID_IDTSPS1616 0x0378 #endif /* LINUX_RIO_IDS_H */ -- cgit v1.2.3 From 6164281ab7a4d3bd42588d6b25984e960a2e032f Mon Sep 17 00:00:00 2001 From: Pavel Emelyanov Date: Wed, 12 Jan 2011 17:00:46 -0800 Subject: user_ns: improve the user_ns on-the-slab packaging Currently on 64-bit arch the user_namespace is 2096 and when being kmalloc-ed it resides on a 4k slab wasting 2003 bytes. If we allocate a separate cache for it and reduce the hash size from 128 to 64 chains the packaging becomes *much* better - the struct is 1072 bytes and the hole between is 98 bytes. [akpm@linux-foundation.org: s/__initcall/module_init/] Signed-off-by: Pavel Emelyanov Acked-by: Serge E. Hallyn Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/user_namespace.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/user_namespace.h b/include/linux/user_namespace.h index 8178156711f9..faf467944baf 100644 --- a/include/linux/user_namespace.h +++ b/include/linux/user_namespace.h @@ -6,7 +6,7 @@ #include #include -#define UIDHASH_BITS (CONFIG_BASE_SMALL ? 3 : 8) +#define UIDHASH_BITS (CONFIG_BASE_SMALL ? 3 : 7) #define UIDHASH_SZ (1 << UIDHASH_BITS) struct user_namespace { -- cgit v1.2.3 From 0329326e85aaa30fb8d427828c718d565c287385 Mon Sep 17 00:00:00 2001 From: "Matti J. Aaltonen" Date: Wed, 12 Jan 2011 17:00:47 -0800 Subject: NFC: Driver for NXP Semiconductors PN544 NFC chip. Creates a new "Near Field Communication" subsystem in drivers/nfc. http://en.wikipedia.org/wiki/Near_Field_Communication is useful ;) This is a driver for the pn544 NFC device. The driver transfers ETSI messages between the device and the user space. Signed-off-by: Matti J. Aaltonen Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/nfc/pn544.h | 97 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 97 insertions(+) create mode 100644 include/linux/nfc/pn544.h (limited to 'include/linux') diff --git a/include/linux/nfc/pn544.h b/include/linux/nfc/pn544.h new file mode 100644 index 000000000000..7ab8521f2347 --- /dev/null +++ b/include/linux/nfc/pn544.h @@ -0,0 +1,97 @@ +/* + * Driver include for the PN544 NFC chip. + * + * Copyright (C) Nokia Corporation + * + * Author: Jari Vanhala + * Contact: Matti Aaltoenn + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#ifndef _PN544_H_ +#define _PN544_H_ + +#include + +#define PN544_DRIVER_NAME "pn544" +#define PN544_MAXWINDOW_SIZE 7 +#define PN544_WINDOW_SIZE 4 +#define PN544_RETRIES 10 +#define PN544_MAX_I2C_TRANSFER 0x0400 +#define PN544_MSG_MAX_SIZE 0x21 /* at normal HCI mode */ + +/* ioctl */ +#define PN544_CHAR_BASE 'P' +#define PN544_IOR(num, dtype) _IOR(PN544_CHAR_BASE, num, dtype) +#define PN544_IOW(num, dtype) _IOW(PN544_CHAR_BASE, num, dtype) +#define PN544_GET_FW_MODE PN544_IOW(1, unsigned int) +#define PN544_SET_FW_MODE PN544_IOW(2, unsigned int) +#define PN544_GET_DEBUG PN544_IOW(3, unsigned int) +#define PN544_SET_DEBUG PN544_IOW(4, unsigned int) + +/* Timing restrictions (ms) */ +#define PN544_RESETVEN_TIME 30 /* 7 */ +#define PN544_PVDDVEN_TIME 0 +#define PN544_VBATVEN_TIME 0 +#define PN544_GPIO4VEN_TIME 0 +#define PN544_WAKEUP_ACK 5 +#define PN544_WAKEUP_GUARD (PN544_WAKEUP_ACK + 1) +#define PN544_INACTIVITY_TIME 1000 +#define PN544_INTERFRAME_DELAY 200 /* us */ +#define PN544_BAUDRATE_CHANGE 150 /* us */ + +/* Debug bits */ +#define PN544_DEBUG_BUF 0x01 +#define PN544_DEBUG_READ 0x02 +#define PN544_DEBUG_WRITE 0x04 +#define PN544_DEBUG_IRQ 0x08 +#define PN544_DEBUG_CALLS 0x10 +#define PN544_DEBUG_MODE 0x20 + +/* Normal (HCI) mode */ +#define PN544_LLC_HCI_OVERHEAD 3 /* header + crc (to length) */ +#define PN544_LLC_MIN_SIZE (1 + PN544_LLC_HCI_OVERHEAD) /* length + */ +#define PN544_LLC_MAX_DATA (PN544_MSG_MAX_SIZE - 2) +#define PN544_LLC_MAX_HCI_SIZE (PN544_LLC_MAX_DATA - 2) + +struct pn544_llc_packet { + unsigned char length; /* of rest of packet */ + unsigned char header; + unsigned char data[PN544_LLC_MAX_DATA]; /* includes crc-ccitt */ +}; + +/* Firmware upgrade mode */ +#define PN544_FW_HEADER_SIZE 3 +/* max fw transfer is 1024bytes, but I2C limits it to 0xC0 */ +#define PN544_MAX_FW_DATA (PN544_MAX_I2C_TRANSFER - PN544_FW_HEADER_SIZE) + +struct pn544_fw_packet { + unsigned char command; /* status in answer */ + unsigned char length[2]; /* big-endian order (msf) */ + unsigned char data[PN544_MAX_FW_DATA]; +}; + +#ifdef __KERNEL__ +/* board config */ +struct pn544_nfc_platform_data { + int (*request_resources) (struct i2c_client *client); + void (*free_resources) (void); + void (*enable) (int fw); + int (*test) (void); + void (*disable) (void); +}; +#endif /* __KERNEL__ */ + +#endif /* _PN544_H_ */ -- cgit v1.2.3 From 7a21a3cc0be92e70474cc2ab06cb074f6a7c3f09 Mon Sep 17 00:00:00 2001 From: Alexander Gordeev Date: Wed, 12 Jan 2011 17:00:49 -0800 Subject: pps: trivial fixes Here are some very trivial fixes combined: - add macro definitions to protect header file from including several times - remove declaration for an unexistent array - fix typos Signed-off-by: Alexander Gordeev Acked-by: Rodolfo Giometti Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/pps_kernel.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/pps_kernel.h b/include/linux/pps_kernel.h index e0a193f830ef..23f63c3263bb 100644 --- a/include/linux/pps_kernel.h +++ b/include/linux/pps_kernel.h @@ -18,6 +18,9 @@ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ +#ifndef LINUX_PPS_KERNEL_H +#define LINUX_PPS_KERNEL_H + #include #include @@ -71,7 +74,6 @@ struct pps_device { extern spinlock_t pps_idr_lock; extern struct idr pps_idr; -extern struct timespec pps_irq_ts[]; extern struct device_attribute pps_attrs[]; @@ -87,3 +89,5 @@ extern void pps_unregister_source(int source); extern int pps_register_cdev(struct pps_device *pps); extern void pps_unregister_cdev(struct pps_device *pps); extern void pps_event(int source, struct pps_ktime *ts, int event, void *data); + +#endif /* LINUX_PPS_KERNEL_H */ -- cgit v1.2.3 From 3003d55b59aa98aeaff2773df69732b27c0cbf6a Mon Sep 17 00:00:00 2001 From: Alexander Gordeev Date: Wed, 12 Jan 2011 17:00:50 -0800 Subject: pps: fix race in PPS_FETCH handler There was a race in PPS_FETCH ioctl handler when several processes want to obtain PPS data simultaneously using sleeping PPS_FETCH. They all sleep most of the time in the system call. With the old approach when the first process waiting on the pps queue is waken up it makes new system call right away and zeroes pps->go. So other processes continue to sleep. This is a clear race condition because of the global 'go' variable. With the new approach pps->last_ev holds some value increasing at each PPS event. PPS_FETCH ioctl handler saves current value to the local variable at the very beginning so it can safely check that there is a new event by just comparing both variables. Signed-off-by: Alexander Gordeev Acked-by: Rodolfo Giometti Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/pps_kernel.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/pps_kernel.h b/include/linux/pps_kernel.h index 23f63c3263bb..65194fe498bb 100644 --- a/include/linux/pps_kernel.h +++ b/include/linux/pps_kernel.h @@ -55,7 +55,7 @@ struct pps_device { struct pps_ktime clear_tu; int current_mode; /* PPS mode at event time */ - int go; /* PPS event is arrived? */ + unsigned int last_ev; /* last PPS event id */ wait_queue_head_t queue; /* PPS event queue */ unsigned int id; /* PPS source unique ID */ -- cgit v1.2.3 From 6f4229b51106cbc859e9d8209b22c8a2ec749e64 Mon Sep 17 00:00:00 2001 From: Alexander Gordeev Date: Wed, 12 Jan 2011 17:00:50 -0800 Subject: pps: unify timestamp gathering Add a helper function to gather timestamps. This way clients don't have to duplicate it. Signed-off-by: Alexander Gordeev Acked-by: Rodolfo Giometti Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/pps_kernel.h | 20 +++++++++++++++++++- include/linux/serial_core.h | 5 +++-- include/linux/tty_ldisc.h | 5 +++-- 3 files changed, 25 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/pps_kernel.h b/include/linux/pps_kernel.h index 65194fe498bb..32aa6763ca1b 100644 --- a/include/linux/pps_kernel.h +++ b/include/linux/pps_kernel.h @@ -43,6 +43,10 @@ struct pps_source_info { struct device *dev; }; +struct pps_event_time { + struct timespec ts_real; +}; + /* The main struct */ struct pps_device { struct pps_source_info info; /* PSS source info */ @@ -88,6 +92,20 @@ extern int pps_register_source(struct pps_source_info *info, extern void pps_unregister_source(int source); extern int pps_register_cdev(struct pps_device *pps); extern void pps_unregister_cdev(struct pps_device *pps); -extern void pps_event(int source, struct pps_ktime *ts, int event, void *data); +extern void pps_event(int source, struct pps_event_time *ts, int event, + void *data); + +static inline void timespec_to_pps_ktime(struct pps_ktime *kt, + struct timespec ts) +{ + kt->sec = ts.tv_sec; + kt->nsec = ts.tv_nsec; +} + +static inline void pps_get_ts(struct pps_event_time *ts) +{ + getnstimeofday(&ts->ts_real); +} #endif /* LINUX_PPS_KERNEL_H */ + diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index a23fa29d4eb0..758c5b0c6fd3 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -212,6 +212,7 @@ #include #include #include +#include struct uart_port; struct serial_struct; @@ -528,10 +529,10 @@ uart_handle_dcd_change(struct uart_port *uport, unsigned int status) struct uart_state *state = uport->state; struct tty_port *port = &state->port; struct tty_ldisc *ld = tty_ldisc_ref(port->tty); - struct timespec ts; + struct pps_event_time ts; if (ld && ld->ops->dcd_change) - getnstimeofday(&ts); + pps_get_ts(&ts); uport->icount.dcd++; #ifdef CONFIG_HARD_PPS diff --git a/include/linux/tty_ldisc.h b/include/linux/tty_ldisc.h index 526d66f066a3..763e061e19f1 100644 --- a/include/linux/tty_ldisc.h +++ b/include/linux/tty_ldisc.h @@ -101,7 +101,7 @@ * any pending driver I/O is completed. * * void (*dcd_change)(struct tty_struct *tty, unsigned int status, - * struct timespec *ts) + * struct pps_event_time *ts) * * Tells the discipline that the DCD pin has changed its status and * the relative timestamp. Pointer ts can be NULL. @@ -109,6 +109,7 @@ #include #include +#include struct tty_ldisc_ops { int magic; @@ -143,7 +144,7 @@ struct tty_ldisc_ops { char *fp, int count); void (*write_wakeup)(struct tty_struct *); void (*dcd_change)(struct tty_struct *, unsigned int, - struct timespec *); + struct pps_event_time *); struct module *owner; -- cgit v1.2.3 From 5e196d34a776420278e4117b4742cd9d3f2350ed Mon Sep 17 00:00:00 2001 From: Alexander Gordeev Date: Wed, 12 Jan 2011 17:00:51 -0800 Subject: pps: access pps device by direct pointer Using device index as a pointer needs some unnecessary work to be done every time the pointer is needed (in irq handler for example). Using a direct pointer is much more easy (and safe as well). Signed-off-by: Alexander Gordeev Acked-by: Rodolfo Giometti Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/pps_kernel.h | 23 +++++++++-------------- 1 file changed, 9 insertions(+), 14 deletions(-) (limited to 'include/linux') diff --git a/include/linux/pps_kernel.h b/include/linux/pps_kernel.h index 32aa6763ca1b..1aedf50088cf 100644 --- a/include/linux/pps_kernel.h +++ b/include/linux/pps_kernel.h @@ -31,13 +31,16 @@ * Global defines */ +struct pps_device; + /* The specific PPS source info */ struct pps_source_info { char name[PPS_MAX_NAME_LEN]; /* simbolic name */ char path[PPS_MAX_NAME_LEN]; /* path of connected device */ int mode; /* PPS's allowed mode */ - void (*echo)(int source, int event, void *data); /* PPS echo function */ + void (*echo)(struct pps_device *pps, + int event, void *data); /* PPS echo function */ struct module *owner; struct device *dev; @@ -65,35 +68,27 @@ struct pps_device { unsigned int id; /* PPS source unique ID */ struct cdev cdev; struct device *dev; - int devno; struct fasync_struct *async_queue; /* fasync method */ spinlock_t lock; - - atomic_t usage; /* usage count */ }; /* * Global variables */ -extern spinlock_t pps_idr_lock; -extern struct idr pps_idr; - extern struct device_attribute pps_attrs[]; /* * Exported functions */ -struct pps_device *pps_get_source(int source); -extern void pps_put_source(struct pps_device *pps); -extern int pps_register_source(struct pps_source_info *info, - int default_params); -extern void pps_unregister_source(int source); +extern struct pps_device *pps_register_source( + struct pps_source_info *info, int default_params); +extern void pps_unregister_source(struct pps_device *pps); extern int pps_register_cdev(struct pps_device *pps); extern void pps_unregister_cdev(struct pps_device *pps); -extern void pps_event(int source, struct pps_event_time *ts, int event, - void *data); +extern void pps_event(struct pps_device *pps, + struct pps_event_time *ts, int event, void *data); static inline void timespec_to_pps_ktime(struct pps_ktime *kt, struct timespec ts) -- cgit v1.2.3 From 12f9b1f9c11700893a7b453705d95b260d78f268 Mon Sep 17 00:00:00 2001 From: Alexander Gordeev Date: Wed, 12 Jan 2011 17:00:55 -0800 Subject: pps: timestamp is always passed to dcd_change() Remove the code that gatheres timestamp in pps_tty_dcd_change() in case passed ts parameter is NULL because it never happens in the current code. Fix comments as well. Signed-off-by: Alexander Gordeev Acked-by: Rodolfo Giometti Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/tty_ldisc.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/tty_ldisc.h b/include/linux/tty_ldisc.h index 763e061e19f1..ff7dc08696a8 100644 --- a/include/linux/tty_ldisc.h +++ b/include/linux/tty_ldisc.h @@ -104,7 +104,7 @@ * struct pps_event_time *ts) * * Tells the discipline that the DCD pin has changed its status and - * the relative timestamp. Pointer ts can be NULL. + * the relative timestamp. Pointer ts cannot be NULL. */ #include -- cgit v1.2.3 From 025b40abe715d638e60516a657d354e8560c1a85 Mon Sep 17 00:00:00 2001 From: Alexander Gordeev Date: Wed, 12 Jan 2011 17:00:56 -0800 Subject: ntp: add hardpps implementation This commit adds hardpps() implementation based upon the original one from the NTPv4 reference kernel code from David Mills. However, it is highly optimized towards very fast syncronization and maximum stickness to PPS signal. The typical error is less then a microsecond. To make it sync faster I had to throw away exponential phase filter so that the full phase offset is corrected immediately. Then I also had to throw away median phase filter because it gives a bigger error itself if used without exponential filter. Maybe we will find an appropriate filtering scheme in the future but it's not necessary if the signal quality is ok. Signed-off-by: Alexander Gordeev Acked-by: John Stultz Cc: Rodolfo Giometti Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/timex.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/timex.h b/include/linux/timex.h index 32d852f8cbe4..d23999f9499d 100644 --- a/include/linux/timex.h +++ b/include/linux/timex.h @@ -268,6 +268,7 @@ extern u64 tick_length; extern void second_overflow(void); extern void update_ntp_one_tick(void); extern int do_adjtimex(struct timex *); +extern void hardpps(const struct timespec *, const struct timespec *); int read_current_timer(unsigned long *timer_val); -- cgit v1.2.3 From e2c18e49a0d4f822ffc29fb4958943beb1ff08b7 Mon Sep 17 00:00:00 2001 From: Alexander Gordeev Date: Wed, 12 Jan 2011 17:00:57 -0800 Subject: pps: capture MONOTONIC_RAW timestamps as well MONOTONIC_RAW clock timestamps are ideally suited for frequency calculation and also fit well into the original NTP hardpps design. Now phase and frequency can be adjusted separately: the former based on REALTIME clock and the latter based on MONOTONIC_RAW clock. A new function getnstime_raw_and_real is added to timekeeping subsystem to capture both timestamps at the same time and atomically. Signed-off-by: Alexander Gordeev Acked-by: John Stultz Cc: Rodolfo Giometti Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/pps_kernel.h | 14 ++++++++++++++ include/linux/time.h | 2 ++ 2 files changed, 16 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pps_kernel.h b/include/linux/pps_kernel.h index 1aedf50088cf..94048547f29a 100644 --- a/include/linux/pps_kernel.h +++ b/include/linux/pps_kernel.h @@ -47,6 +47,9 @@ struct pps_source_info { }; struct pps_event_time { +#ifdef CONFIG_NTP_PPS + struct timespec ts_raw; +#endif /* CONFIG_NTP_PPS */ struct timespec ts_real; }; @@ -97,10 +100,21 @@ static inline void timespec_to_pps_ktime(struct pps_ktime *kt, kt->nsec = ts.tv_nsec; } +#ifdef CONFIG_NTP_PPS + +static inline void pps_get_ts(struct pps_event_time *ts) +{ + getnstime_raw_and_real(&ts->ts_raw, &ts->ts_real); +} + +#else /* CONFIG_NTP_PPS */ + static inline void pps_get_ts(struct pps_event_time *ts) { getnstimeofday(&ts->ts_real); } +#endif /* CONFIG_NTP_PPS */ + #endif /* LINUX_PPS_KERNEL_H */ diff --git a/include/linux/time.h b/include/linux/time.h index 9f15ac7ab92a..1e6d3b59238d 100644 --- a/include/linux/time.h +++ b/include/linux/time.h @@ -158,6 +158,8 @@ extern unsigned int alarm_setitimer(unsigned int seconds); extern int do_getitimer(int which, struct itimerval *value); extern void getnstimeofday(struct timespec *tv); extern void getrawmonotonic(struct timespec *ts); +extern void getnstime_raw_and_real(struct timespec *ts_raw, + struct timespec *ts_real); extern void getboottime(struct timespec *ts); extern void monotonic_to_bootbased(struct timespec *ts); -- cgit v1.2.3 From 717c033669ed3ceaee8df57d4562fafcc1a6267a Mon Sep 17 00:00:00 2001 From: Alexander Gordeev Date: Wed, 12 Jan 2011 17:00:58 -0800 Subject: pps: add kernel consumer support Add an optional feature of PPSAPI, kernel consumer support, which uses the added hardpps() function. Signed-off-by: Alexander Gordeev Acked-by: Rodolfo Giometti Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/pps.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pps.h b/include/linux/pps.h index 0194ab06177b..a9bb1d93451a 100644 --- a/include/linux/pps.h +++ b/include/linux/pps.h @@ -114,11 +114,18 @@ struct pps_fdata { struct pps_ktime timeout; }; +struct pps_bind_args { + int tsformat; /* format of time stamps */ + int edge; /* selected event type */ + int consumer; /* selected kernel consumer */ +}; + #include #define PPS_GETPARAMS _IOR('p', 0xa1, struct pps_kparams *) #define PPS_SETPARAMS _IOW('p', 0xa2, struct pps_kparams *) #define PPS_GETCAP _IOR('p', 0xa3, int *) #define PPS_FETCH _IOWR('p', 0xa4, struct pps_fdata *) +#define PPS_KC_BIND _IOW('p', 0xa5, struct pps_bind_args *) #endif /* _PPS_H_ */ -- cgit v1.2.3 From 8930c8aa740b12ad69f44a35137bcc39bfa3dc41 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Wed, 12 Jan 2011 17:01:03 -0800 Subject: memstick: add support for JMicron JMB 385 and 390 controllers Signed-off-by: Aries Lee Signed-off-by: Takashi Iwai Cc: Alex Dubov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/pci_ids.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h index ab47732d81e0..ae0dc453e3e2 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -2369,8 +2369,10 @@ #define PCI_DEVICE_ID_JMICRON_JMB38X_SD 0x2381 #define PCI_DEVICE_ID_JMICRON_JMB38X_MMC 0x2382 #define PCI_DEVICE_ID_JMICRON_JMB38X_MS 0x2383 +#define PCI_DEVICE_ID_JMICRON_JMB385_MS 0x2388 #define PCI_DEVICE_ID_JMICRON_JMB388_SD 0x2391 #define PCI_DEVICE_ID_JMICRON_JMB388_ESD 0x2392 +#define PCI_DEVICE_ID_JMICRON_JMB390_MS 0x2393 #define PCI_VENDOR_ID_KORENIX 0x1982 #define PCI_DEVICE_ID_KORENIX_JETCARDF0 0x1600 -- cgit v1.2.3 From beeae05138baf615a0284fc4a9022c33271ee37c Mon Sep 17 00:00:00 2001 From: Alexander Shishkin Date: Wed, 12 Jan 2011 17:01:09 -0800 Subject: cramfs: hide function prototypes behind __KERNEL__ macro Currently, 3 kernel function prototypes are present in a header file exported to userland. This patch fixes it. Signed-off-by: Alexander Shishkin Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/cramfs_fs.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/cramfs_fs.h b/include/linux/cramfs_fs.h index 6fc2bed368b8..0e7bf272ec2f 100644 --- a/include/linux/cramfs_fs.h +++ b/include/linux/cramfs_fs.h @@ -84,9 +84,11 @@ struct cramfs_super { | CRAMFS_FLAG_WRONG_SIGNATURE \ | CRAMFS_FLAG_SHIFTED_ROOT_OFFSET ) +#ifdef __KERNEL__ /* Uncompression interfaces to the underlying zlib */ int cramfs_uncompress_block(void *dst, int dstlen, void *src, int srclen); int cramfs_uncompress_init(void); void cramfs_uncompress_exit(void); +#endif /* __KERNEL__ */ #endif -- cgit v1.2.3 From 8d0a1decb4a07bcb8ef5c4d7f693eafdebc2c41b Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Wed, 12 Jan 2011 17:01:12 -0800 Subject: romfs: have romfs_fs.h pull in necessary headers This header uses things like __be32, so pull in linux/types.h. Further, it uses BLOCK_SIZE, so pull in linux/fs.h. Signed-off-by: Mike Frysinger Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/romfs_fs.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/romfs_fs.h b/include/linux/romfs_fs.h index c490fbc43fe2..5f57f93b284f 100644 --- a/include/linux/romfs_fs.h +++ b/include/linux/romfs_fs.h @@ -1,6 +1,9 @@ #ifndef __LINUX_ROMFS_FS_H #define __LINUX_ROMFS_FS_H +#include +#include + /* The basic structures of the romfs filesystem */ #define ROMBSIZE BLOCK_SIZE -- cgit v1.2.3 From 93685ad247ef65b7d6f90ffe97b44f5cfeaf40d3 Mon Sep 17 00:00:00 2001 From: Lasse Collin Date: Wed, 12 Jan 2011 17:01:14 -0800 Subject: Decompressors: get rid of set_error_fn() macro set_error_fn() has become a useless complication after c1e7c3ae59 ("bzip2/lzma/gzip: pre-boot malloc doesn't return NULL on failure") fixed the use of error() in malloc(). Only decompress_unlzma.c had some use for it and that was easy to change too. This also gets rid of the static function pointer "error", which should have been marked as __initdata. Signed-off-by: Lasse Collin Cc: "H. Peter Anvin" Cc: Alain Knaff Cc: Albin Tonnerre Cc: Phillip Lougher Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/decompress/mm.h | 5 ----- 1 file changed, 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/decompress/mm.h b/include/linux/decompress/mm.h index ad5ec1d0475e..a31e9820710a 100644 --- a/include/linux/decompress/mm.h +++ b/include/linux/decompress/mm.h @@ -61,8 +61,6 @@ static void free(void *where) #define large_malloc(a) malloc(a) #define large_free(a) free(a) -#define set_error_fn(x) - #define INIT #else /* STATIC */ @@ -84,9 +82,6 @@ static void free(void *where) #define large_malloc(a) vmalloc(a) #define large_free(a) vfree(a) -static void(*error)(char *m); -#define set_error_fn(x) error = x; - #define INIT __init #define STATIC -- cgit v1.2.3 From 2b6b5caa6d05579bd1501006e34feec1b2aef8c4 Mon Sep 17 00:00:00 2001 From: Lasse Collin Date: Wed, 12 Jan 2011 17:01:15 -0800 Subject: Decompressors: include in Currently users of mm.h need to include to use the macros malloc() and free() provided by mm.h. This fixes it. Signed-off-by: Lasse Collin Cc: "H. Peter Anvin" Cc: Alain Knaff Cc: Albin Tonnerre Cc: Phillip Lougher Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/decompress/mm.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/decompress/mm.h b/include/linux/decompress/mm.h index a31e9820710a..4cb72b920c74 100644 --- a/include/linux/decompress/mm.h +++ b/include/linux/decompress/mm.h @@ -70,6 +70,7 @@ static void free(void *where) #include #include #include +#include #include /* Use defines rather than static inline in order to avoid spurious -- cgit v1.2.3 From 24fa0402a9b6a537e87e38341e78b7da86486846 Mon Sep 17 00:00:00 2001 From: Lasse Collin Date: Wed, 12 Jan 2011 17:01:22 -0800 Subject: decompressors: add XZ decompressor module In userspace, the .lzma format has become mostly a legacy file format that got superseded by the .xz format. Similarly, LZMA Utils was superseded by XZ Utils. These patches add support for XZ decompression into the kernel. Most of the code is as is from XZ Embedded . It was written for the Linux kernel but is usable in other projects too. Advantages of XZ over the current LZMA code in the kernel: - Nice API that can be used by other kernel modules; it's not limited to kernel, initramfs, and initrd decompression. - Integrity check support (CRC32) - BCJ filters improve compression of executable code on certain architectures. These together with LZMA2 can produce a few percent smaller kernel or Squashfs images than plain LZMA without making the decompression slower. This patch: Add the main decompression code (xz_dec), testing module (xz_dec_test), wrapper script (xz_wrap.sh) for the xz command line tool, and documentation. The xz_dec module is enough to have a usable XZ decompressor e.g. for Squashfs. Signed-off-by: Lasse Collin Cc: "H. Peter Anvin" Cc: Alain Knaff Cc: Albin Tonnerre Cc: Phillip Lougher Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/xz.h | 264 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 264 insertions(+) create mode 100644 include/linux/xz.h (limited to 'include/linux') diff --git a/include/linux/xz.h b/include/linux/xz.h new file mode 100644 index 000000000000..64cffa6ddfce --- /dev/null +++ b/include/linux/xz.h @@ -0,0 +1,264 @@ +/* + * XZ decompressor + * + * Authors: Lasse Collin + * Igor Pavlov + * + * This file has been put into the public domain. + * You can do whatever you want with this file. + */ + +#ifndef XZ_H +#define XZ_H + +#ifdef __KERNEL__ +# include +# include +#else +# include +# include +#endif + +/* In Linux, this is used to make extern functions static when needed. */ +#ifndef XZ_EXTERN +# define XZ_EXTERN extern +#endif + +/** + * enum xz_mode - Operation mode + * + * @XZ_SINGLE: Single-call mode. This uses less RAM than + * than multi-call modes, because the LZMA2 + * dictionary doesn't need to be allocated as + * part of the decoder state. All required data + * structures are allocated at initialization, + * so xz_dec_run() cannot return XZ_MEM_ERROR. + * @XZ_PREALLOC: Multi-call mode with preallocated LZMA2 + * dictionary buffer. All data structures are + * allocated at initialization, so xz_dec_run() + * cannot return XZ_MEM_ERROR. + * @XZ_DYNALLOC: Multi-call mode. The LZMA2 dictionary is + * allocated once the required size has been + * parsed from the stream headers. If the + * allocation fails, xz_dec_run() will return + * XZ_MEM_ERROR. + * + * It is possible to enable support only for a subset of the above + * modes at compile time by defining XZ_DEC_SINGLE, XZ_DEC_PREALLOC, + * or XZ_DEC_DYNALLOC. The xz_dec kernel module is always compiled + * with support for all operation modes, but the preboot code may + * be built with fewer features to minimize code size. + */ +enum xz_mode { + XZ_SINGLE, + XZ_PREALLOC, + XZ_DYNALLOC +}; + +/** + * enum xz_ret - Return codes + * @XZ_OK: Everything is OK so far. More input or more + * output space is required to continue. This + * return code is possible only in multi-call mode + * (XZ_PREALLOC or XZ_DYNALLOC). + * @XZ_STREAM_END: Operation finished successfully. + * @XZ_UNSUPPORTED_CHECK: Integrity check type is not supported. Decoding + * is still possible in multi-call mode by simply + * calling xz_dec_run() again. + * Note that this return value is used only if + * XZ_DEC_ANY_CHECK was defined at build time, + * which is not used in the kernel. Unsupported + * check types return XZ_OPTIONS_ERROR if + * XZ_DEC_ANY_CHECK was not defined at build time. + * @XZ_MEM_ERROR: Allocating memory failed. This return code is + * possible only if the decoder was initialized + * with XZ_DYNALLOC. The amount of memory that was + * tried to be allocated was no more than the + * dict_max argument given to xz_dec_init(). + * @XZ_MEMLIMIT_ERROR: A bigger LZMA2 dictionary would be needed than + * allowed by the dict_max argument given to + * xz_dec_init(). This return value is possible + * only in multi-call mode (XZ_PREALLOC or + * XZ_DYNALLOC); the single-call mode (XZ_SINGLE) + * ignores the dict_max argument. + * @XZ_FORMAT_ERROR: File format was not recognized (wrong magic + * bytes). + * @XZ_OPTIONS_ERROR: This implementation doesn't support the requested + * compression options. In the decoder this means + * that the header CRC32 matches, but the header + * itself specifies something that we don't support. + * @XZ_DATA_ERROR: Compressed data is corrupt. + * @XZ_BUF_ERROR: Cannot make any progress. Details are slightly + * different between multi-call and single-call + * mode; more information below. + * + * In multi-call mode, XZ_BUF_ERROR is returned when two consecutive calls + * to XZ code cannot consume any input and cannot produce any new output. + * This happens when there is no new input available, or the output buffer + * is full while at least one output byte is still pending. Assuming your + * code is not buggy, you can get this error only when decoding a compressed + * stream that is truncated or otherwise corrupt. + * + * In single-call mode, XZ_BUF_ERROR is returned only when the output buffer + * is too small or the compressed input is corrupt in a way that makes the + * decoder produce more output than the caller expected. When it is + * (relatively) clear that the compressed input is truncated, XZ_DATA_ERROR + * is used instead of XZ_BUF_ERROR. + */ +enum xz_ret { + XZ_OK, + XZ_STREAM_END, + XZ_UNSUPPORTED_CHECK, + XZ_MEM_ERROR, + XZ_MEMLIMIT_ERROR, + XZ_FORMAT_ERROR, + XZ_OPTIONS_ERROR, + XZ_DATA_ERROR, + XZ_BUF_ERROR +}; + +/** + * struct xz_buf - Passing input and output buffers to XZ code + * @in: Beginning of the input buffer. This may be NULL if and only + * if in_pos is equal to in_size. + * @in_pos: Current position in the input buffer. This must not exceed + * in_size. + * @in_size: Size of the input buffer + * @out: Beginning of the output buffer. This may be NULL if and only + * if out_pos is equal to out_size. + * @out_pos: Current position in the output buffer. This must not exceed + * out_size. + * @out_size: Size of the output buffer + * + * Only the contents of the output buffer from out[out_pos] onward, and + * the variables in_pos and out_pos are modified by the XZ code. + */ +struct xz_buf { + const uint8_t *in; + size_t in_pos; + size_t in_size; + + uint8_t *out; + size_t out_pos; + size_t out_size; +}; + +/** + * struct xz_dec - Opaque type to hold the XZ decoder state + */ +struct xz_dec; + +/** + * xz_dec_init() - Allocate and initialize a XZ decoder state + * @mode: Operation mode + * @dict_max: Maximum size of the LZMA2 dictionary (history buffer) for + * multi-call decoding. This is ignored in single-call mode + * (mode == XZ_SINGLE). LZMA2 dictionary is always 2^n bytes + * or 2^n + 2^(n-1) bytes (the latter sizes are less common + * in practice), so other values for dict_max don't make sense. + * In the kernel, dictionary sizes of 64 KiB, 128 KiB, 256 KiB, + * 512 KiB, and 1 MiB are probably the only reasonable values, + * except for kernel and initramfs images where a bigger + * dictionary can be fine and useful. + * + * Single-call mode (XZ_SINGLE): xz_dec_run() decodes the whole stream at + * once. The caller must provide enough output space or the decoding will + * fail. The output space is used as the dictionary buffer, which is why + * there is no need to allocate the dictionary as part of the decoder's + * internal state. + * + * Because the output buffer is used as the workspace, streams encoded using + * a big dictionary are not a problem in single-call mode. It is enough that + * the output buffer is big enough to hold the actual uncompressed data; it + * can be smaller than the dictionary size stored in the stream headers. + * + * Multi-call mode with preallocated dictionary (XZ_PREALLOC): dict_max bytes + * of memory is preallocated for the LZMA2 dictionary. This way there is no + * risk that xz_dec_run() could run out of memory, since xz_dec_run() will + * never allocate any memory. Instead, if the preallocated dictionary is too + * small for decoding the given input stream, xz_dec_run() will return + * XZ_MEMLIMIT_ERROR. Thus, it is important to know what kind of data will be + * decoded to avoid allocating excessive amount of memory for the dictionary. + * + * Multi-call mode with dynamically allocated dictionary (XZ_DYNALLOC): + * dict_max specifies the maximum allowed dictionary size that xz_dec_run() + * may allocate once it has parsed the dictionary size from the stream + * headers. This way excessive allocations can be avoided while still + * limiting the maximum memory usage to a sane value to prevent running the + * system out of memory when decompressing streams from untrusted sources. + * + * On success, xz_dec_init() returns a pointer to struct xz_dec, which is + * ready to be used with xz_dec_run(). If memory allocation fails, + * xz_dec_init() returns NULL. + */ +XZ_EXTERN struct xz_dec *xz_dec_init(enum xz_mode mode, uint32_t dict_max); + +/** + * xz_dec_run() - Run the XZ decoder + * @s: Decoder state allocated using xz_dec_init() + * @b: Input and output buffers + * + * The possible return values depend on build options and operation mode. + * See enum xz_ret for details. + * + * Note that if an error occurs in single-call mode (return value is not + * XZ_STREAM_END), b->in_pos and b->out_pos are not modified and the + * contents of the output buffer from b->out[b->out_pos] onward are + * undefined. This is true even after XZ_BUF_ERROR, because with some filter + * chains, there may be a second pass over the output buffer, and this pass + * cannot be properly done if the output buffer is truncated. Thus, you + * cannot give the single-call decoder a too small buffer and then expect to + * get that amount valid data from the beginning of the stream. You must use + * the multi-call decoder if you don't want to uncompress the whole stream. + */ +XZ_EXTERN enum xz_ret xz_dec_run(struct xz_dec *s, struct xz_buf *b); + +/** + * xz_dec_reset() - Reset an already allocated decoder state + * @s: Decoder state allocated using xz_dec_init() + * + * This function can be used to reset the multi-call decoder state without + * freeing and reallocating memory with xz_dec_end() and xz_dec_init(). + * + * In single-call mode, xz_dec_reset() is always called in the beginning of + * xz_dec_run(). Thus, explicit call to xz_dec_reset() is useful only in + * multi-call mode. + */ +XZ_EXTERN void xz_dec_reset(struct xz_dec *s); + +/** + * xz_dec_end() - Free the memory allocated for the decoder state + * @s: Decoder state allocated using xz_dec_init(). If s is NULL, + * this function does nothing. + */ +XZ_EXTERN void xz_dec_end(struct xz_dec *s); + +/* + * Standalone build (userspace build or in-kernel build for boot time use) + * needs a CRC32 implementation. For normal in-kernel use, kernel's own + * CRC32 module is used instead, and users of this module don't need to + * care about the functions below. + */ +#ifndef XZ_INTERNAL_CRC32 +# ifdef __KERNEL__ +# define XZ_INTERNAL_CRC32 0 +# else +# define XZ_INTERNAL_CRC32 1 +# endif +#endif + +#if XZ_INTERNAL_CRC32 +/* + * This must be called before any other xz_* function to initialize + * the CRC32 lookup table. + */ +XZ_EXTERN void xz_crc32_init(void); + +/* + * Update CRC32 value using the polynomial from IEEE-802.3. To start a new + * calculation, the third argument must be zero. To continue the calculation, + * the previously returned value is passed as the third argument. + */ +XZ_EXTERN uint32_t xz_crc32(const uint8_t *buf, size_t size, uint32_t crc); +#endif +#endif -- cgit v1.2.3 From 3ebe12439ba7fc62e1d6ecb569b7287771716ca1 Mon Sep 17 00:00:00 2001 From: Lasse Collin Date: Wed, 12 Jan 2011 17:01:23 -0800 Subject: decompressors: add boot-time XZ support This implements the API defined in which is used for kernel, initramfs, and initrd decompression. This patch together with the first patch is enough for XZ-compressed initramfs and initrd; XZ-compressed kernel will need arch-specific changes. The buffering requirements described in decompress_unxz.c are stricter than with gzip, so the relevant changes should be done to the arch-specific code when adding support for XZ-compressed kernel. Similarly, the heap size in arch-specific pre-boot code may need to be increased (30 KiB is enough). The XZ decompressor needs memmove(), memeq() (memcmp() == 0), and memzero() (memset(ptr, 0, size)), which aren't available in all arch-specific pre-boot environments. I'm including simple versions in decompress_unxz.c, but a cleaner solution would naturally be nicer. Signed-off-by: Lasse Collin Cc: "H. Peter Anvin" Cc: Alain Knaff Cc: Albin Tonnerre Cc: Phillip Lougher Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/decompress/unxz.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) create mode 100644 include/linux/decompress/unxz.h (limited to 'include/linux') diff --git a/include/linux/decompress/unxz.h b/include/linux/decompress/unxz.h new file mode 100644 index 000000000000..41728fc6c8a1 --- /dev/null +++ b/include/linux/decompress/unxz.h @@ -0,0 +1,19 @@ +/* + * Wrapper for decompressing XZ-compressed kernel, initramfs, and initrd + * + * Author: Lasse Collin + * + * This file has been put into the public domain. + * You can do whatever you want with this file. + */ + +#ifndef DECOMPRESS_UNXZ_H +#define DECOMPRESS_UNXZ_H + +int unxz(unsigned char *in, int in_size, + int (*fill)(void *dest, unsigned int size), + int (*flush)(void *src, unsigned int size), + unsigned char *out, int *in_used, + void (*error)(char *x)); + +#endif -- cgit v1.2.3 From 5cb2fad28fd8f95e911bed8c9342435a5b8e67de Mon Sep 17 00:00:00 2001 From: Lasse Collin Date: Wed, 12 Jan 2011 17:01:26 -0800 Subject: decompressors: remove unused constant from inflate.h Signed-off-by: Lasse Collin Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/decompress/inflate.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/decompress/inflate.h b/include/linux/decompress/inflate.h index f9b06ccc3e5c..8c0aef1ba5f5 100644 --- a/include/linux/decompress/inflate.h +++ b/include/linux/decompress/inflate.h @@ -1,9 +1,6 @@ #ifndef INFLATE_H #define INFLATE_H -/* Other housekeeping constants */ -#define INBUFSIZ 4096 - int gunzip(unsigned char *inbuf, int len, int(*fill)(void*, unsigned int), int(*flush)(void*, unsigned int), -- cgit v1.2.3 From 84c89557a302e18414a011cc52b1abd034860743 Mon Sep 17 00:00:00 2001 From: Peter Jones Date: Thu, 13 Jan 2011 19:59:47 +0000 Subject: dm ioctl: allow rename to fill empty uuid Allow the uuid of a mapped device to be set after device creation. Previously the uuid (which is optional) could only be set by DM_DEV_CREATE. If no uuid was supplied it could not be set later. Sometimes it's necessary to create the device before the uuid is known, and in such cases the uuid must be filled in after the creation. This patch extends DM_DEV_RENAME to accept a uuid accompanied by a new flag DM_UUID_FLAG. This can only be done once and if no uuid was previously supplied. It cannot be used to change an existing uuid. DM_VERSION_MINOR is also bumped to 19 to indicate this interface extension is available. Signed-off-by: Peter Jones Signed-off-by: Jonathan Brassow Signed-off-by: Alasdair G Kergon --- include/linux/dm-ioctl.h | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/dm-ioctl.h b/include/linux/dm-ioctl.h index 49eab360d5d4..e453e1174ae1 100644 --- a/include/linux/dm-ioctl.h +++ b/include/linux/dm-ioctl.h @@ -44,7 +44,7 @@ * Remove a device, destroy any tables. * * DM_DEV_RENAME: - * Rename a device. + * Rename a device or set its uuid if none was previously supplied. * * DM_SUSPEND: * This performs both suspend and resume, depending which flag is @@ -267,9 +267,9 @@ enum { #define DM_DEV_SET_GEOMETRY _IOWR(DM_IOCTL, DM_DEV_SET_GEOMETRY_CMD, struct dm_ioctl) #define DM_VERSION_MAJOR 4 -#define DM_VERSION_MINOR 18 +#define DM_VERSION_MINOR 19 #define DM_VERSION_PATCHLEVEL 0 -#define DM_VERSION_EXTRA "-ioctl (2010-06-29)" +#define DM_VERSION_EXTRA "-ioctl (2010-10-14)" /* Status bits */ #define DM_READONLY_FLAG (1 << 0) /* In/Out */ @@ -322,4 +322,10 @@ enum { */ #define DM_UEVENT_GENERATED_FLAG (1 << 13) /* Out */ +/* + * If set, rename changes the uuid not the name. Only permitted + * if no uuid was previously supplied: an existing uuid cannot be changed. + */ +#define DM_UUID_FLAG (1 << 14) /* In */ + #endif /* _LINUX_DM_IOCTL_H */ -- cgit v1.2.3 From 86a54a4802df10d23ccd655e2083e812fe990243 Mon Sep 17 00:00:00 2001 From: Jonathan Brassow Date: Thu, 13 Jan 2011 19:59:52 +0000 Subject: dm log userspace: add version number to comms This patch adds a 'version' field to the 'dm_ulog_request' structure. The 'version' field is taken from a portion of the unused 'padding' field in the 'dm_ulog_request' structure. This was done to avoid changing the size of the structure and possibly disrupting backwards compatibility. The version number will help notify user-space daemons when a change has been made to the kernel/userspace log API. Signed-off-by: Jonathan Brassow Signed-off-by: Mike Snitzer Signed-off-by: Alasdair G Kergon --- include/linux/dm-log-userspace.h | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/dm-log-userspace.h b/include/linux/dm-log-userspace.h index 0c3c3a2110c4..eeace7d3ff15 100644 --- a/include/linux/dm-log-userspace.h +++ b/include/linux/dm-log-userspace.h @@ -370,6 +370,16 @@ #define DM_ULOG_REQUEST_TYPE(request_type) \ (DM_ULOG_REQUEST_MASK & (request_type)) +/* + * DM_ULOG_REQUEST_VERSION is incremented when there is a + * change to the way information is passed between kernel + * and userspace. This could be a structure change of + * dm_ulog_request or a change in the way requests are + * issued/handled. Changes are outlined here: + * version 1: Initial implementation + */ +#define DM_ULOG_REQUEST_VERSION 1 + struct dm_ulog_request { /* * The local unique identifier (luid) and the universally unique @@ -383,8 +393,9 @@ struct dm_ulog_request { */ uint64_t luid; char uuid[DM_UUID_LEN]; - char padding[7]; /* Padding because DM_UUID_LEN = 129 */ + char padding[3]; /* Padding because DM_UUID_LEN = 129 */ + uint32_t version; /* See DM_ULOG_REQUEST_VERSION */ int32_t error; /* Used to report back processing errors */ uint32_t seq; /* Sequence number for request */ -- cgit v1.2.3 From 9c4376de98719d2768dd919553843de34bb094a6 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Thu, 13 Jan 2011 19:59:58 +0000 Subject: dm: use non reentrant workqueues if equivalent kmirrord_wq, kcopyd_work and md->wq are created per dm instance and serve only a single work item from the dm instance, so non-reentrant workqueues would provide the same ordering guarantees as ordered ones while allowing CPU affinity and use of the workqueues for other purposes. Switch them to non-reentrant workqueues. Signed-off-by: Tejun Heo Signed-off-by: Mike Snitzer Signed-off-by: Alasdair G Kergon --- include/linux/dm-ioctl.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/dm-ioctl.h b/include/linux/dm-ioctl.h index e453e1174ae1..78bbf47bbb96 100644 --- a/include/linux/dm-ioctl.h +++ b/include/linux/dm-ioctl.h @@ -268,8 +268,8 @@ enum { #define DM_VERSION_MAJOR 4 #define DM_VERSION_MINOR 19 -#define DM_VERSION_PATCHLEVEL 0 -#define DM_VERSION_EXTRA "-ioctl (2010-10-14)" +#define DM_VERSION_PATCHLEVEL 1 +#define DM_VERSION_EXTRA "-ioctl (2011-01-07)" /* Status bits */ #define DM_READONLY_FLAG (1 << 0) /* In/Out */ -- cgit v1.2.3 From 9d357b0787bb3c91835d5e658c3bda178f9ca419 Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Thu, 13 Jan 2011 20:00:01 +0000 Subject: dm: introduce target callbacks and congestion callback DM currently implements congestion checking by checking on congestion in each component device. For raid456 we need to also check if the stripe cache is congested. Add per-target congestion checker callback support. Extending the target_callbacks structure with additional callback functions allows for establishing multiple callbacks per-target (a callback is also needed for unplug). Cc: linux-raid@vger.kernel.org Signed-off-by: NeilBrown Signed-off-by: Jonathan Brassow Signed-off-by: Mike Snitzer Signed-off-by: Alasdair G Kergon --- include/linux/device-mapper.h | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'include/linux') diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h index 2970022faa63..4b1c63d478ab 100644 --- a/include/linux/device-mapper.h +++ b/include/linux/device-mapper.h @@ -193,6 +193,12 @@ struct dm_target { char *error; }; +/* Each target can link one of these into the table */ +struct dm_target_callbacks { + struct list_head list; + int (*congested_fn) (struct dm_target_callbacks *, int); +}; + int dm_register_target(struct target_type *t); void dm_unregister_target(struct target_type *t); @@ -268,6 +274,11 @@ int dm_table_create(struct dm_table **result, fmode_t mode, int dm_table_add_target(struct dm_table *t, const char *type, sector_t start, sector_t len, char *params); +/* + * Target_ctr should call this if it needs to add any callbacks. + */ +void dm_table_add_target_callbacks(struct dm_table *t, struct dm_target_callbacks *cb); + /* * Finally call this to make the table ready for use. */ -- cgit v1.2.3 From 99d03c141b40914b67d63c9d23b8da4386422ed7 Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Thu, 13 Jan 2011 20:00:02 +0000 Subject: dm: per target unplug callback support Add per-target unplug callback support. Cc: linux-raid@vger.kernel.org Signed-off-by: NeilBrown Signed-off-by: Jonathan Brassow Signed-off-by: Mike Snitzer Signed-off-by: Alasdair G Kergon --- include/linux/device-mapper.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h index 4b1c63d478ab..272496d1fae4 100644 --- a/include/linux/device-mapper.h +++ b/include/linux/device-mapper.h @@ -197,6 +197,7 @@ struct dm_target { struct dm_target_callbacks { struct list_head list; int (*congested_fn) (struct dm_target_callbacks *, int); + void (*unplug_fn)(struct dm_target_callbacks *); }; int dm_register_target(struct target_type *t); -- cgit v1.2.3 From 8d661f1e462d50bd83de87ee628aaf820ce3c66c Mon Sep 17 00:00:00 2001 From: Amitkumar Karwar Date: Tue, 11 Jan 2011 16:14:24 -0800 Subject: ieee80211: correct IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK macro It is defined in include/linux/ieee80211.h. As per IEEE spec. bit6 to bit15 in block ack parameter represents buffer size. So the bitmask should be 0xFFC0. Signed-off-by: Amitkumar Karwar Signed-off-by: Bing Zhao Cc: stable@kernel.org Reviewed-by: Johannes Berg Signed-off-by: John W. Linville --- include/linux/ieee80211.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h index 6042228954a7..294169e31364 100644 --- a/include/linux/ieee80211.h +++ b/include/linux/ieee80211.h @@ -959,7 +959,7 @@ struct ieee80211_ht_info { /* block-ack parameters */ #define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002 #define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C -#define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFA0 +#define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFC0 #define IEEE80211_DELBA_PARAM_TID_MASK 0xF000 #define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800 -- cgit v1.2.3 From d8a3515e2a9523f8ed56d1f4537d16338bda2bc2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Thu, 13 Jan 2011 17:26:46 -0800 Subject: Revert "gpiolib: annotate gpio-intialization with __must_check" This reverts commit 0fdae42d361bbb431ca0ab0efed5126a94821177, which wasn't really supposed to go in, and causes lots of annoying warnings. Quoth Andrew: "Complete brainfart - I meant to drop that patch ages ago." Quoth Greg: "Ick, yeah, that patch isn't ok to go in as-is, all of the callers need to be fixed up first, which is what I thought we had agreed on..." Reported-by: Stephen Rothwell Acked-by: Andrew Morton Acked-by: Greg KH Signed-off-by: Linus Torvalds --- include/linux/gpio.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/gpio.h b/include/linux/gpio.h index f79d67f413e4..4b47ed96f131 100644 --- a/include/linux/gpio.h +++ b/include/linux/gpio.h @@ -30,7 +30,7 @@ static inline int gpio_is_valid(int number) return 0; } -static inline int __must_check gpio_request(unsigned gpio, const char *label) +static inline int gpio_request(unsigned gpio, const char *label) { return -ENOSYS; } @@ -62,12 +62,12 @@ static inline void gpio_free_array(struct gpio *array, size_t num) WARN_ON(1); } -static inline int __must_check gpio_direction_input(unsigned gpio) +static inline int gpio_direction_input(unsigned gpio) { return -ENOSYS; } -static inline int __must_check gpio_direction_output(unsigned gpio, int value) +static inline int gpio_direction_output(unsigned gpio, int value) { return -ENOSYS; } -- cgit v1.2.3 From 6c9ae009b298753a3baf71298d676a68b5a10c8f Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Thu, 13 Jan 2011 15:45:38 -0800 Subject: irq: use per_cpu kstat_irqs Use modern per_cpu API to increment {soft|hard}irq counters, and use per_cpu allocation for (struct irq_desc)->kstats_irq instead of an array. This gives better SMP/NUMA locality and saves few instructions per irq. With small nr_cpuids values (8 for example), kstats_irq was a small array (less than L1_CACHE_BYTES), potentially source of false sharing. In the !CONFIG_SPARSE_IRQ case, remove the huge, NUMA/cache unfriendly kstat_irqs_all[NR_IRQS][NR_CPUS] array. Note: we still populate kstats_irq for all possible irqs in early_irq_init(). We probably could use on-demand allocations. (Code included in alloc_descs()). Problem is not all IRQS are used with a prior alloc_descs() call. kstat_irqs_this_cpu() is not used anymore, remove it. Signed-off-by: Eric Dumazet Reviewed-by: Christoph Lameter Cc: Ingo Molnar Cc: Andi Kleen Cc: Tejun Heo Cc: Thomas Gleixner Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/irqdesc.h | 2 +- include/linux/kernel_stat.h | 19 +++++++++---------- 2 files changed, 10 insertions(+), 11 deletions(-) (limited to 'include/linux') diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h index 979c68cc7458..6a64c6fa81af 100644 --- a/include/linux/irqdesc.h +++ b/include/linux/irqdesc.h @@ -57,7 +57,7 @@ struct irq_desc { #endif struct timer_rand_state *timer_rand_state; - unsigned int *kstat_irqs; + unsigned int __percpu *kstat_irqs; irq_flow_handler_t handle_irq; struct irqaction *action; /* IRQ action list */ unsigned int status; /* IRQ status */ diff --git a/include/linux/kernel_stat.h b/include/linux/kernel_stat.h index 44e83ba12b5b..0cce2db580c3 100644 --- a/include/linux/kernel_stat.h +++ b/include/linux/kernel_stat.h @@ -46,16 +46,14 @@ DECLARE_PER_CPU(struct kernel_stat, kstat); extern unsigned long long nr_context_switches(void); #ifndef CONFIG_GENERIC_HARDIRQS -#define kstat_irqs_this_cpu(irq) \ - (this_cpu_read(kstat.irqs[irq]) struct irq_desc; static inline void kstat_incr_irqs_this_cpu(unsigned int irq, struct irq_desc *desc) { - kstat_this_cpu.irqs[irq]++; - kstat_this_cpu.irqs_sum++; + __this_cpu_inc(kstat.irqs[irq]); + __this_cpu_inc(kstat.irqs_sum); } static inline unsigned int kstat_irqs_cpu(unsigned int irq, int cpu) @@ -65,17 +63,18 @@ static inline unsigned int kstat_irqs_cpu(unsigned int irq, int cpu) #else #include extern unsigned int kstat_irqs_cpu(unsigned int irq, int cpu); -#define kstat_irqs_this_cpu(DESC) \ - ((DESC)->kstat_irqs[smp_processor_id()]) -#define kstat_incr_irqs_this_cpu(irqno, DESC) do {\ - ((DESC)->kstat_irqs[smp_processor_id()]++);\ - kstat_this_cpu.irqs_sum++; } while (0) + +#define kstat_incr_irqs_this_cpu(irqno, DESC) \ +do { \ + __this_cpu_inc(*(DESC)->kstat_irqs); \ + __this_cpu_inc(kstat.irqs_sum); \ +} while (0) #endif static inline void kstat_incr_softirqs_this_cpu(unsigned int irq) { - kstat_this_cpu.softirqs[irq]++; + __this_cpu_inc(kstat.softirqs[irq]); } static inline unsigned int kstat_softirqs_cpu(unsigned int irq, int cpu) -- cgit v1.2.3 From 43bb40c9e3aa51a3b038c9df2c9afb4d4685614d Mon Sep 17 00:00:00 2001 From: Dave Jones Date: Thu, 13 Jan 2011 15:45:40 -0800 Subject: sched: remove long deprecated CLONE_STOPPED flag This warning was added in commit bdff746a3915 ("clone: prepare to recycle CLONE_STOPPED") three years ago. 2.6.26 came and went. As far as I know, no-one is actually using CLONE_STOPPED. Signed-off-by: Dave Jones Cc: Peter Zijlstra Cc: Ingo Molnar Cc: Tejun Heo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/sched.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index 96e23215e276..07402530fc70 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -21,7 +21,8 @@ #define CLONE_DETACHED 0x00400000 /* Unused, ignored */ #define CLONE_UNTRACED 0x00800000 /* set if the tracing process can't force CLONE_PTRACE on this clone */ #define CLONE_CHILD_SETTID 0x01000000 /* set the TID in the child */ -#define CLONE_STOPPED 0x02000000 /* Start in stopped state */ +/* 0x02000000 was previously the unused CLONE_STOPPED (Start in stopped state) + and is now available for re-use. */ #define CLONE_NEWUTS 0x04000000 /* New utsname group? */ #define CLONE_NEWIPC 0x08000000 /* New ipcs */ #define CLONE_NEWUSER 0x10000000 /* New user namespace */ -- cgit v1.2.3 From 88f5acf88ae6a9778f6d25d0d5d7ec2d57764a97 Mon Sep 17 00:00:00 2001 From: Mel Gorman Date: Thu, 13 Jan 2011 15:45:41 -0800 Subject: mm: page allocator: adjust the per-cpu counter threshold when memory is low Commit aa45484 ("calculate a better estimate of NR_FREE_PAGES when memory is low") noted that watermarks were based on the vmstat NR_FREE_PAGES. To avoid synchronization overhead, these counters are maintained on a per-cpu basis and drained both periodically and when a threshold is above a threshold. On large CPU systems, the difference between the estimate and real value of NR_FREE_PAGES can be very high. The system can get into a case where pages are allocated far below the min watermark potentially causing livelock issues. The commit solved the problem by taking a better reading of NR_FREE_PAGES when memory was low. Unfortately, as reported by Shaohua Li this accurate reading can consume a large amount of CPU time on systems with many sockets due to cache line bouncing. This patch takes a different approach. For large machines where counter drift might be unsafe and while kswapd is awake, the per-cpu thresholds for the target pgdat are reduced to limit the level of drift to what should be a safe level. This incurs a performance penalty in heavy memory pressure by a factor that depends on the workload and the machine but the machine should function correctly without accidentally exhausting all memory on a node. There is an additional cost when kswapd wakes and sleeps but the event is not expected to be frequent - in Shaohua's test case, there was one recorded sleep and wake event at least. To ensure that kswapd wakes up, a safe version of zone_watermark_ok() is introduced that takes a more accurate reading of NR_FREE_PAGES when called from wakeup_kswapd, when deciding whether it is really safe to go back to sleep in sleeping_prematurely() and when deciding if a zone is really balanced or not in balance_pgdat(). We are still using an expensive function but limiting how often it is called. When the test case is reproduced, the time spent in the watermark functions is reduced. The following report is on the percentage of time spent cumulatively spent in the functions zone_nr_free_pages(), zone_watermark_ok(), __zone_watermark_ok(), zone_watermark_ok_safe(), zone_page_state_snapshot(), zone_page_state(). vanilla 11.6615% disable-threshold 0.2584% David said: : We had to pull aa454840 "mm: page allocator: calculate a better estimate : of NR_FREE_PAGES when memory is low and kswapd is awake" from 2.6.36 : internally because tests showed that it would cause the machine to stall : as the result of heavy kswapd activity. I merged it back with this fix as : it is pending in the -mm tree and it solves the issue we were seeing, so I : definitely think this should be pushed to -stable (and I would seriously : consider it for 2.6.37 inclusion even at this late date). Signed-off-by: Mel Gorman Reported-by: Shaohua Li Reviewed-by: Christoph Lameter Tested-by: Nicolas Bareil Cc: David Rientjes Cc: Kyle McMartin Cc: [2.6.37.1, 2.6.36.x] Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mmzone.h | 10 +++------- include/linux/vmstat.h | 5 +++++ 2 files changed, 8 insertions(+), 7 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 39c24ebe9cfd..48906629335c 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -458,12 +458,6 @@ static inline int zone_is_oom_locked(const struct zone *zone) return test_bit(ZONE_OOM_LOCKED, &zone->flags); } -#ifdef CONFIG_SMP -unsigned long zone_nr_free_pages(struct zone *zone); -#else -#define zone_nr_free_pages(zone) zone_page_state(zone, NR_FREE_PAGES) -#endif /* CONFIG_SMP */ - /* * The "priority" of VM scanning is how much of the queues we will scan in one * go. A value of 12 for DEF_PRIORITY implies that we will scan 1/4096th of the @@ -661,7 +655,9 @@ typedef struct pglist_data { extern struct mutex zonelists_mutex; void build_all_zonelists(void *data); void wakeup_kswapd(struct zone *zone, int order); -int zone_watermark_ok(struct zone *z, int order, unsigned long mark, +bool zone_watermark_ok(struct zone *z, int order, unsigned long mark, + int classzone_idx, int alloc_flags); +bool zone_watermark_ok_safe(struct zone *z, int order, unsigned long mark, int classzone_idx, int alloc_flags); enum memmap_context { MEMMAP_EARLY, diff --git a/include/linux/vmstat.h b/include/linux/vmstat.h index eaaea37b3b75..e4cc21cf5870 100644 --- a/include/linux/vmstat.h +++ b/include/linux/vmstat.h @@ -254,6 +254,8 @@ extern void dec_zone_state(struct zone *, enum zone_stat_item); extern void __dec_zone_state(struct zone *, enum zone_stat_item); void refresh_cpu_vm_stats(int); +void reduce_pgdat_percpu_threshold(pg_data_t *pgdat); +void restore_pgdat_percpu_threshold(pg_data_t *pgdat); #else /* CONFIG_SMP */ /* @@ -298,6 +300,9 @@ static inline void __dec_zone_page_state(struct page *page, #define dec_zone_page_state __dec_zone_page_state #define mod_zone_page_state __mod_zone_page_state +static inline void reduce_pgdat_percpu_threshold(pg_data_t *pgdat) { } +static inline void restore_pgdat_percpu_threshold(pg_data_t *pgdat) { } + static inline void refresh_cpu_vm_stats(int cpu) { } #endif -- cgit v1.2.3 From b44129b30652c8771db2265939bb8b463724043d Mon Sep 17 00:00:00 2001 From: Mel Gorman Date: Thu, 13 Jan 2011 15:45:43 -0800 Subject: mm: vmstat: use a single setter function and callback for adjusting percpu thresholds reduce_pgdat_percpu_threshold() and restore_pgdat_percpu_threshold() exist to adjust the per-cpu vmstat thresholds while kswapd is awake to avoid errors due to counter drift. The functions duplicate some code so this patch replaces them with a single set_pgdat_percpu_threshold() that takes a callback function to calculate the desired threshold as a parameter. [akpm@linux-foundation.org: readability tweak] [kosaki.motohiro@jp.fujitsu.com: set_pgdat_percpu_threshold(): don't use for_each_online_cpu] Signed-off-by: Mel Gorman Reviewed-by: Christoph Lameter Reviewed-by: KAMEZAWA Hiroyuki Signed-off-by: KOSAKI Motohiro Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/vmstat.h | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/vmstat.h b/include/linux/vmstat.h index e4cc21cf5870..833e676d6d92 100644 --- a/include/linux/vmstat.h +++ b/include/linux/vmstat.h @@ -254,8 +254,11 @@ extern void dec_zone_state(struct zone *, enum zone_stat_item); extern void __dec_zone_state(struct zone *, enum zone_stat_item); void refresh_cpu_vm_stats(int); -void reduce_pgdat_percpu_threshold(pg_data_t *pgdat); -void restore_pgdat_percpu_threshold(pg_data_t *pgdat); + +int calculate_pressure_threshold(struct zone *zone); +int calculate_normal_threshold(struct zone *zone); +void set_pgdat_percpu_threshold(pg_data_t *pgdat, + int (*calculate_pressure)(struct zone *)); #else /* CONFIG_SMP */ /* @@ -300,8 +303,7 @@ static inline void __dec_zone_page_state(struct page *page, #define dec_zone_page_state __dec_zone_page_state #define mod_zone_page_state __mod_zone_page_state -static inline void reduce_pgdat_percpu_threshold(pg_data_t *pgdat) { } -static inline void restore_pgdat_percpu_threshold(pg_data_t *pgdat) { } +#define set_pgdat_percpu_threshold(pgdat, callback) { } static inline void refresh_cpu_vm_stats(int cpu) { } #endif -- cgit v1.2.3 From 3e7d344970673c5334cf7b5bb27c8c0942b06126 Mon Sep 17 00:00:00 2001 From: Mel Gorman Date: Thu, 13 Jan 2011 15:45:56 -0800 Subject: mm: vmscan: reclaim order-0 and use compaction instead of lumpy reclaim Lumpy reclaim is disruptive. It reclaims a large number of pages and ignores the age of the pages it reclaims. This can incur significant stalls and potentially increase the number of major faults. Compaction has reached the point where it is considered reasonably stable (meaning it has passed a lot of testing) and is a potential candidate for displacing lumpy reclaim. This patch introduces an alternative to lumpy reclaim whe compaction is available called reclaim/compaction. The basic operation is very simple - instead of selecting a contiguous range of pages to reclaim, a number of order-0 pages are reclaimed and then compaction is later by either kswapd (compact_zone_order()) or direct compaction (__alloc_pages_direct_compact()). [akpm@linux-foundation.org: fix build] [akpm@linux-foundation.org: use conventional task_struct naming] Signed-off-by: Mel Gorman Cc: Andrea Arcangeli Cc: KOSAKI Motohiro Cc: Rik van Riel Acked-by: Johannes Weiner Cc: Andy Whitcroft Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/compaction.h | 14 ++++++++++++++ include/linux/kernel.h | 7 +++++++ 2 files changed, 21 insertions(+) (limited to 'include/linux') diff --git a/include/linux/compaction.h b/include/linux/compaction.h index 5ac51552d908..2592883d862d 100644 --- a/include/linux/compaction.h +++ b/include/linux/compaction.h @@ -22,6 +22,9 @@ extern int sysctl_extfrag_handler(struct ctl_table *table, int write, extern int fragmentation_index(struct zone *zone, unsigned int order); extern unsigned long try_to_compact_pages(struct zonelist *zonelist, int order, gfp_t gfp_mask, nodemask_t *mask); +extern unsigned long compaction_suitable(struct zone *zone, int order); +extern unsigned long compact_zone_order(struct zone *zone, int order, + gfp_t gfp_mask); /* Do not skip compaction more than 64 times */ #define COMPACT_MAX_DEFER_SHIFT 6 @@ -59,6 +62,17 @@ static inline unsigned long try_to_compact_pages(struct zonelist *zonelist, return COMPACT_CONTINUE; } +static inline unsigned long compaction_suitable(struct zone *zone, int order) +{ + return COMPACT_SKIPPED; +} + +static inline unsigned long compact_zone_order(struct zone *zone, int order, + gfp_t gfp_mask) +{ + return 0; +} + static inline void defer_compaction(struct zone *zone) { } diff --git a/include/linux/kernel.h b/include/linux/kernel.h index 57dac7022b63..5a9d9059520b 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -600,6 +600,13 @@ struct sysinfo { #define NUMA_BUILD 0 #endif +/* This helps us avoid #ifdef CONFIG_COMPACTION */ +#ifdef CONFIG_COMPACTION +#define COMPACTION_BUILD 1 +#else +#define COMPACTION_BUILD 0 +#endif + /* Rebuild everything on CONFIG_FTRACE_MCOUNT_RECORD */ #ifdef CONFIG_FTRACE_MCOUNT_RECORD # define REBUILD_DUE_TO_FTRACE_MCOUNT_RECORD -- cgit v1.2.3 From 77f1fe6b08b13a87391549c8a820ddc817b6f50e Mon Sep 17 00:00:00 2001 From: Mel Gorman Date: Thu, 13 Jan 2011 15:45:57 -0800 Subject: mm: migration: allow migration to operate asynchronously and avoid synchronous compaction in the faster path Migration synchronously waits for writeback if the initial passes fails. Callers of memory compaction do not necessarily want this behaviour if the caller is latency sensitive or expects that synchronous migration is not going to have a significantly better success rate. This patch adds a sync parameter to migrate_pages() allowing the caller to indicate if wait_on_page_writeback() is allowed within migration or not. For reclaim/compaction, try_to_compact_pages() is first called asynchronously, direct reclaim runs and then try_to_compact_pages() is called synchronously as there is a greater expectation that it'll succeed. [akpm@linux-foundation.org: build/merge fix] Signed-off-by: Mel Gorman Cc: Andrea Arcangeli Cc: KOSAKI Motohiro Cc: Rik van Riel Acked-by: Johannes Weiner Cc: Andy Whitcroft Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/compaction.h | 10 ++++++---- include/linux/migrate.h | 12 ++++++++---- 2 files changed, 14 insertions(+), 8 deletions(-) (limited to 'include/linux') diff --git a/include/linux/compaction.h b/include/linux/compaction.h index 2592883d862d..72cba4034785 100644 --- a/include/linux/compaction.h +++ b/include/linux/compaction.h @@ -21,10 +21,11 @@ extern int sysctl_extfrag_handler(struct ctl_table *table, int write, extern int fragmentation_index(struct zone *zone, unsigned int order); extern unsigned long try_to_compact_pages(struct zonelist *zonelist, - int order, gfp_t gfp_mask, nodemask_t *mask); + int order, gfp_t gfp_mask, nodemask_t *mask, + bool sync); extern unsigned long compaction_suitable(struct zone *zone, int order); extern unsigned long compact_zone_order(struct zone *zone, int order, - gfp_t gfp_mask); + gfp_t gfp_mask, bool sync); /* Do not skip compaction more than 64 times */ #define COMPACT_MAX_DEFER_SHIFT 6 @@ -57,7 +58,8 @@ static inline bool compaction_deferred(struct zone *zone) #else static inline unsigned long try_to_compact_pages(struct zonelist *zonelist, - int order, gfp_t gfp_mask, nodemask_t *nodemask) + int order, gfp_t gfp_mask, nodemask_t *nodemask, + bool sync) { return COMPACT_CONTINUE; } @@ -68,7 +70,7 @@ static inline unsigned long compaction_suitable(struct zone *zone, int order) } static inline unsigned long compact_zone_order(struct zone *zone, int order, - gfp_t gfp_mask) + gfp_t gfp_mask, bool sync) { return 0; } diff --git a/include/linux/migrate.h b/include/linux/migrate.h index 085527fb8261..fa31902803fd 100644 --- a/include/linux/migrate.h +++ b/include/linux/migrate.h @@ -13,9 +13,11 @@ extern void putback_lru_pages(struct list_head *l); extern int migrate_page(struct address_space *, struct page *, struct page *); extern int migrate_pages(struct list_head *l, new_page_t x, - unsigned long private, int offlining); + unsigned long private, int offlining, + bool sync); extern int migrate_huge_pages(struct list_head *l, new_page_t x, - unsigned long private, int offlining); + unsigned long private, int offlining, + bool sync); extern int fail_migrate_page(struct address_space *, struct page *, struct page *); @@ -33,9 +35,11 @@ extern int migrate_huge_page_move_mapping(struct address_space *mapping, static inline void putback_lru_pages(struct list_head *l) {} static inline int migrate_pages(struct list_head *l, new_page_t x, - unsigned long private, int offlining) { return -ENOSYS; } + unsigned long private, int offlining, + bool sync) { return -ENOSYS; } static inline int migrate_huge_pages(struct list_head *l, new_page_t x, - unsigned long private, int offlining) { return -ENOSYS; } + unsigned long private, int offlining, + bool sync) { return -ENOSYS; } static inline int migrate_prep(void) { return -ENOSYS; } static inline int migrate_prep_local(void) { return -ENOSYS; } -- cgit v1.2.3 From 7f0f24967b0349798803260b2e4bf347cffa1990 Mon Sep 17 00:00:00 2001 From: Mel Gorman Date: Thu, 13 Jan 2011 15:45:58 -0800 Subject: mm: migration: cleanup migrate_pages API by matching types for offlining and sync With the introduction of the boolean sync parameter, the API looks a little inconsistent as offlining is still an int. Convert offlining to a bool for the sake of being tidy. Signed-off-by: Mel Gorman Cc: Andrea Arcangeli Cc: KOSAKI Motohiro Cc: Rik van Riel Acked-by: Johannes Weiner Cc: Andy Whitcroft Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/migrate.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/migrate.h b/include/linux/migrate.h index fa31902803fd..e39aeecfe9a2 100644 --- a/include/linux/migrate.h +++ b/include/linux/migrate.h @@ -13,10 +13,10 @@ extern void putback_lru_pages(struct list_head *l); extern int migrate_page(struct address_space *, struct page *, struct page *); extern int migrate_pages(struct list_head *l, new_page_t x, - unsigned long private, int offlining, + unsigned long private, bool offlining, bool sync); extern int migrate_huge_pages(struct list_head *l, new_page_t x, - unsigned long private, int offlining, + unsigned long private, bool offlining, bool sync); extern int fail_migrate_page(struct address_space *, @@ -35,10 +35,10 @@ extern int migrate_huge_page_move_mapping(struct address_space *mapping, static inline void putback_lru_pages(struct list_head *l) {} static inline int migrate_pages(struct list_head *l, new_page_t x, - unsigned long private, int offlining, + unsigned long private, bool offlining, bool sync) { return -ENOSYS; } static inline int migrate_huge_pages(struct list_head *l, new_page_t x, - unsigned long private, int offlining, + unsigned long private, bool offlining, bool sync) { return -ENOSYS; } static inline int migrate_prep(void) { return -ENOSYS; } -- cgit v1.2.3 From e5a5623b28198aa91ea71ee5d3846757fc76bc87 Mon Sep 17 00:00:00 2001 From: David Rientjes Date: Thu, 13 Jan 2011 15:46:00 -0800 Subject: mm: remove unused get_vm_area_node get_vm_area_node() is unused in the kernel and can thus be removed. Signed-off-by: David Rientjes Cc: Christoph Lameter Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/vmalloc.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/vmalloc.h b/include/linux/vmalloc.h index 44b54f619ac6..cb73c755fac8 100644 --- a/include/linux/vmalloc.h +++ b/include/linux/vmalloc.h @@ -90,9 +90,6 @@ extern struct vm_struct *__get_vm_area_caller(unsigned long size, unsigned long flags, unsigned long start, unsigned long end, void *caller); -extern struct vm_struct *get_vm_area_node(unsigned long size, - unsigned long flags, int node, - gfp_t gfp_mask); extern struct vm_struct *remove_vm_area(const void *addr); extern int map_vm_area(struct vm_struct *area, pgprot_t prot, -- cgit v1.2.3 From ec3f64fc9c196a304c4b7db3e1ff56d640628509 Mon Sep 17 00:00:00 2001 From: David Rientjes Date: Thu, 13 Jan 2011 15:46:01 -0800 Subject: mm: remove gfp mask from pcpu_get_vm_areas pcpu_get_vm_areas() only uses GFP_KERNEL allocations, so remove the gfp_t formal and use the mask internally. Signed-off-by: David Rientjes Cc: Christoph Lameter Cc: Tejun Heo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/vmalloc.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/vmalloc.h b/include/linux/vmalloc.h index cb73c755fac8..c7348b8d0a81 100644 --- a/include/linux/vmalloc.h +++ b/include/linux/vmalloc.h @@ -117,7 +117,7 @@ extern __init void vm_area_register_early(struct vm_struct *vm, size_t align); #ifdef CONFIG_SMP struct vm_struct **pcpu_get_vm_areas(const unsigned long *offsets, const size_t *sizes, int nr_vms, - size_t align, gfp_t gfp_mask); + size_t align); void pcpu_free_vm_areas(struct vm_struct **vms, int nr_vms); #endif -- cgit v1.2.3 From d0a21265dfb5fa8ae54e90d0fb6d1c215b10a28a Mon Sep 17 00:00:00 2001 From: David Rientjes Date: Thu, 13 Jan 2011 15:46:02 -0800 Subject: mm: unify module_alloc code for vmalloc Four architectures (arm, mips, sparc, x86) use __vmalloc_area() for module_init(). Much of the code is duplicated and can be generalized in a globally accessible function, __vmalloc_node_range(). __vmalloc_node() now calls into __vmalloc_node_range() with a range of [VMALLOC_START, VMALLOC_END) for functionally equivalent behavior. Each architecture may then use __vmalloc_node_range() directly to remove the duplication of code. Signed-off-by: David Rientjes Cc: Christoph Lameter Cc: Russell King Cc: Ralf Baechle Cc: "David S. Miller" Cc: Ingo Molnar Cc: "H. Peter Anvin" Cc: Thomas Gleixner Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/vmalloc.h | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/vmalloc.h b/include/linux/vmalloc.h index c7348b8d0a81..4ed6fcd6b726 100644 --- a/include/linux/vmalloc.h +++ b/include/linux/vmalloc.h @@ -59,8 +59,9 @@ extern void *vmalloc_exec(unsigned long size); extern void *vmalloc_32(unsigned long size); extern void *vmalloc_32_user(unsigned long size); extern void *__vmalloc(unsigned long size, gfp_t gfp_mask, pgprot_t prot); -extern void *__vmalloc_area(struct vm_struct *area, gfp_t gfp_mask, - pgprot_t prot); +extern void *__vmalloc_node_range(unsigned long size, unsigned long align, + unsigned long start, unsigned long end, gfp_t gfp_mask, + pgprot_t prot, int node, void *caller); extern void vfree(const void *addr); extern void *vmap(struct page **pages, unsigned int count, -- cgit v1.2.3 From dabb16f639820267b3850d804571c70bd93d4e07 Mon Sep 17 00:00:00 2001 From: Mandeep Singh Baines Date: Thu, 13 Jan 2011 15:46:05 -0800 Subject: oom: allow a non-CAP_SYS_RESOURCE proces to oom_score_adj down We'd like to be able to oom_score_adj a process up/down as it enters/leaves the foreground. Currently, it is not possible to oom_adj down without CAP_SYS_RESOURCE. This patch allows a task to decrease its oom_score_adj back to the value that a CAP_SYS_RESOURCE thread set it to or its inherited value at fork. Assuming the thread that has forked it has oom_score_adj of 0, each process could decrease it back from 0 upon activation unless a CAP_SYS_RESOURCE thread elevated it to something higher. Alternative considered: * a setuid binary * a daemon with CAP_SYS_RESOURCE Since you don't wan't all processes to be able to reduce their oom_adj, a setuid or daemon implementation would be complex. The alternatives also have much higher overhead. This patch updated from original patch based on feedback from David Rientjes. Signed-off-by: Mandeep Singh Baines Acked-by: David Rientjes Cc: KAMEZAWA Hiroyuki Cc: KOSAKI Motohiro Cc: Rik van Riel Cc: Ying Han Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/sched.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index 07402530fc70..f23b5bb6f52e 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -634,6 +634,8 @@ struct signal_struct { int oom_adj; /* OOM kill score adjustment (bit shift) */ int oom_score_adj; /* OOM kill score adjustment */ + int oom_score_adj_min; /* OOM kill score adjustment minimum value. + * Only settable by CAP_SYS_RESOURCE. */ struct mutex cred_guard_mutex; /* guard against foreign influences on * credential calculations -- cgit v1.2.3 From 212260aa07135b327752dc02625c68cf4ce04caf Mon Sep 17 00:00:00 2001 From: Rik van Riel Date: Thu, 13 Jan 2011 15:46:06 -0800 Subject: mm: clear PageError bit in msync & fsync Temporary IO failures, eg. due to loss of both multipath paths, can permanently leave the PageError bit set on a page, resulting in msync or fsync returning -EIO over and over again, even if IO is now getting to the disk correctly. We already clear the AS_ENOSPC and AS_IO bits in mapping->flags in the filemap_fdatawait_range function. Also clearing the PageError bit on the page allows subsequent msync or fsync calls on this file to return without an error, if the subsequent IO succeeds. Unfortunately data written out in the msync or fsync call that returned -EIO can still get lost, because the page dirty bit appears to not get restored on IO error. However, the alternative could be potentially all of memory filling up with uncleanable dirty pages, hanging the system, so there is no nice choice here... Signed-off-by: Rik van Riel Acked-by: Valerie Aurora Acked-by: Jeff Layton Cc: Theodore Ts'o Acked-by: Jan Kara Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/page-flags.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h index 5f38c460367e..4805fdec8d6e 100644 --- a/include/linux/page-flags.h +++ b/include/linux/page-flags.h @@ -198,7 +198,7 @@ static inline int __TestClearPage##uname(struct page *page) { return 0; } struct page; /* forward declaration */ TESTPAGEFLAG(Locked, locked) TESTSETFLAG(Locked, locked) -PAGEFLAG(Error, error) +PAGEFLAG(Error, error) TESTCLEARFLAG(Error, error) PAGEFLAG(Referenced, referenced) TESTCLEARFLAG(Referenced, referenced) PAGEFLAG(Dirty, dirty) TESTSCFLAG(Dirty, dirty) __CLEARPAGEFLAG(Dirty, dirty) PAGEFLAG(LRU, lru) __CLEARPAGEFLAG(LRU, lru) -- cgit v1.2.3 From 110d74a921f4d272b47ef6104fcf937df808f4c8 Mon Sep 17 00:00:00 2001 From: Michel Lespinasse Date: Thu, 13 Jan 2011 15:46:11 -0800 Subject: mm: add FOLL_MLOCK follow_page flag. Move the code to mlock pages from __mlock_vma_pages_range() to follow_page(). This allows __mlock_vma_pages_range() to not have to break down work into 16-page batches. An additional motivation for doing this within the present patch series is that it'll make it easier for a later chagne to drop mmap_sem when blocking on disk (we'd like to be able to resume at the page that was read from disk instead of at the start of a 16-page batch). Signed-off-by: Michel Lespinasse Cc: Hugh Dickins Cc: Rik van Riel Cc: Peter Zijlstra Cc: Nick Piggin Cc: KOSAKI Motohiro Cc: Ingo Molnar Cc: "H. Peter Anvin" Cc: Thomas Gleixner Cc: David Howells Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index 721f451c3029..9ade803bcc1b 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1415,6 +1415,7 @@ struct page *follow_page(struct vm_area_struct *, unsigned long address, #define FOLL_GET 0x04 /* do get_page on page */ #define FOLL_DUMP 0x08 /* give error on hole if it would be zero */ #define FOLL_FORCE 0x10 /* get_user_pages read/write w/o permission */ +#define FOLL_MLOCK 0x40 /* mark page as mlocked */ typedef int (*pte_fn_t)(pte_t *pte, pgtable_t token, unsigned long addr, void *data); -- cgit v1.2.3 From 088e54658f559a13c2b988086512d76fe9e8f846 Mon Sep 17 00:00:00 2001 From: Steven Rostedt Date: Thu, 13 Jan 2011 15:46:16 -0800 Subject: mm: remove likely() from mapping_unevictable() The mapping_unevictable() has a likely() around the mapping parameter. This mapping parameter comes from page_mapping() which has an unlikely() that the page will be set as PAGE_MAPPING_ANON, and if so, it will return NULL. One would think that this unlikely() means that the mapping returned by page_mapping() would not be NULL, but where page_mapping() is used just above mapping_unevictable(), that unlikely() is incorrect most of the time. This means that the "likely(mapping)" in mapping_unevictable() is incorrect most of the time. Running the annotated branch profiler on my main box which runs firefox, evolution, xchat and is part of my distcc farm, I had this: correct incorrect % Function File Line ------- --------- - -------- ---- ---- 12872836 1269443893 98 mapping_unevictable pagemap.h 51 35935762 1270265395 97 page_mapping mm.h 659 1306198001 143659 0 page_mapping mm.h 657 203131478 121586 0 page_mapping mm.h 657 5415491 1116 0 page_mapping mm.h 657 74899487 1116 0 page_mapping mm.h 657 203132845 224 0 page_mapping mm.h 659 5415464 27 0 page_mapping mm.h 659 13552 0 0 page_mapping mm.h 657 13552 0 0 page_mapping mm.h 659 242630 0 0 page_mapping mm.h 657 242630 0 0 page_mapping mm.h 659 74899487 0 0 page_mapping mm.h 659 The page_mapping() is a static inline, which is why it shows up multiple times. The mapping_unevictable() is also a static inline but seems to be used only once in my setup. The unlikely in page_mapping() was correct a total of 1909540379 times and incorrect 1270533123 times, with a 39% being incorrect. Perhaps this is enough to remove the unlikely from page_mapping() as well. Signed-off-by: Steven Rostedt Reviewed-by: KOSAKI Motohiro Acked-by: Nick Piggin Acked-by: Rik van Riel Cc: Lee Schermerhorn Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/pagemap.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index 2d1ffe3cf1ee..9c66e994540f 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -48,7 +48,7 @@ static inline void mapping_clear_unevictable(struct address_space *mapping) static inline int mapping_unevictable(struct address_space *mapping) { - if (likely(mapping)) + if (mapping) return test_bit(AS_UNEVICTABLE, &mapping->flags); return !!mapping; } -- cgit v1.2.3 From e20e87795834f2f14cb53baf657b91d9c39f92c8 Mon Sep 17 00:00:00 2001 From: Steven Rostedt Date: Thu, 13 Jan 2011 15:46:17 -0800 Subject: mm: remove unlikely() from page_mapping() page_mapping() has a unlikely that the mapping has PAGE_MAPPING_ANON set. But running the annotated branch profiler on a normal desktop system doing vairous tasks (xchat, evolution, firefox, distcc), it is not really that unlikely that the mapping here will have the PAGE_MAPPING_ANON flag set: correct incorrect % Function File Line ------- --------- - -------- ---- ---- 35935762 1270265395 97 page_mapping mm.h 659 1306198001 143659 0 page_mapping mm.h 657 203131478 121586 0 page_mapping mm.h 657 5415491 1116 0 page_mapping mm.h 657 74899487 1116 0 page_mapping mm.h 657 203132845 224 0 page_mapping mm.h 659 5415464 27 0 page_mapping mm.h 659 13552 0 0 page_mapping mm.h 657 13552 0 0 page_mapping mm.h 659 242630 0 0 page_mapping mm.h 657 242630 0 0 page_mapping mm.h 659 74899487 0 0 page_mapping mm.h 659 The page_mapping() is a static inline, which is why it shows up multiple times. The unlikely in page_mapping() was correct a total of 1909540379 times and incorrect 1270533123 times, with a 39% being incorrect. With this much of an error, it's best to simply remove the unlikely and have the compiler and branch prediction figure this out. Signed-off-by: Steven Rostedt Cc: KOSAKI Motohiro Cc: Nick Piggin Cc: Rik van Riel Cc: Lee Schermerhorn Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index 9ade803bcc1b..57e11b2a18ba 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -657,7 +657,7 @@ static inline struct address_space *page_mapping(struct page *page) VM_BUG_ON(PageSlab(page)); if (unlikely(PageSwapCache(page))) mapping = &swapper_space; - else if (unlikely((unsigned long)mapping & PAGE_MAPPING_ANON)) + else if ((unsigned long)mapping & PAGE_MAPPING_ANON) mapping = NULL; return mapping; } -- cgit v1.2.3 From 9950474883e027e6e728cbcff25f7f2bf0c96530 Mon Sep 17 00:00:00 2001 From: Mel Gorman Date: Thu, 13 Jan 2011 15:46:20 -0800 Subject: mm: kswapd: stop high-order balancing when any suitable zone is balanced Simon Kirby reported the following problem We're seeing cases on a number of servers where cache never fully grows to use all available memory. Sometimes we see servers with 4 GB of memory that never seem to have less than 1.5 GB free, even with a constantly-active VM. In some cases, these servers also swap out while this happens, even though they are constantly reading the working set into memory. We have been seeing this happening for a long time; I don't think it's anything recent, and it still happens on 2.6.36. After some debugging work by Simon, Dave Hansen and others, the prevaling theory became that kswapd is reclaiming order-3 pages requested by SLUB too aggressive about it. There are two apparent problems here. On the target machine, there is a small Normal zone in comparison to DMA32. As kswapd tries to balance all zones, it would continually try reclaiming for Normal even though DMA32 was balanced enough for callers. The second problem is that sleeping_prematurely() does not use the same logic as balance_pgdat() when deciding whether to sleep or not. This keeps kswapd artifically awake. A number of tests were run and the figures from previous postings will look very different for a few reasons. One, the old figures were forcing my network card to use GFP_ATOMIC in attempt to replicate Simon's problem. Second, I previous specified slub_min_order=3 again in an attempt to reproduce Simon's problem. In this posting, I'm depending on Simon to say whether his problem is fixed or not and these figures are to show the impact to the ordinary cases. Finally, the "vmscan" figures are taken from /proc/vmstat instead of the tracepoints. There is less information but recording is less disruptive. The first test of relevance was postmark with a process running in the background reading a large amount of anonymous memory in blocks. The objective was to vaguely simulate what was happening on Simon's machine and it's memory intensive enough to have kswapd awake. POSTMARK traceonly kanyzone Transactions per second: 156.00 ( 0.00%) 153.00 (-1.96%) Data megabytes read per second: 21.51 ( 0.00%) 21.52 ( 0.05%) Data megabytes written per second: 29.28 ( 0.00%) 29.11 (-0.58%) Files created alone per second: 250.00 ( 0.00%) 416.00 (39.90%) Files create/transact per second: 79.00 ( 0.00%) 76.00 (-3.95%) Files deleted alone per second: 520.00 ( 0.00%) 420.00 (-23.81%) Files delete/transact per second: 79.00 ( 0.00%) 76.00 (-3.95%) MMTests Statistics: duration User/Sys Time Running Test (seconds) 16.58 17.4 Total Elapsed Time (seconds) 218.48 222.47 VMstat Reclaim Statistics: vmscan Direct reclaims 0 4 Direct reclaim pages scanned 0 203 Direct reclaim pages reclaimed 0 184 Kswapd pages scanned 326631 322018 Kswapd pages reclaimed 312632 309784 Kswapd low wmark quickly 1 4 Kswapd high wmark quickly 122 475 Kswapd skip congestion_wait 1 0 Pages activated 700040 705317 Pages deactivated 212113 203922 Pages written 9875 6363 Total pages scanned 326631 322221 Total pages reclaimed 312632 309968 %age total pages scanned/reclaimed 95.71% 96.20% %age total pages scanned/written 3.02% 1.97% proc vmstat: Faults Major Faults 300 254 Minor Faults 645183 660284 Page ins 493588 486704 Page outs 4960088 4986704 Swap ins 1230 661 Swap outs 9869 6355 Performance is mildly affected because kswapd is no longer doing as much work and the background memory consumer process is getting in the way. Note that kswapd scanned and reclaimed fewer pages as it's less aggressive and overall fewer pages were scanned and reclaimed. Swap in/out is particularly reduced again reflecting kswapd throwing out fewer pages. The slight performance impact is unfortunate here but it looks like a direct result of kswapd being less aggressive. As the bug report is about too many pages being freed by kswapd, it may have to be accepted for now. The second test is a streaming IO benchmark that was previously used by Johannes to show regressions in page reclaim. MICRO traceonly kanyzone User/Sys Time Running Test (seconds) 29.29 28.87 Total Elapsed Time (seconds) 492.18 488.79 VMstat Reclaim Statistics: vmscan Direct reclaims 2128 1460 Direct reclaim pages scanned 2284822 1496067 Direct reclaim pages reclaimed 148919 110937 Kswapd pages scanned 15450014 16202876 Kswapd pages reclaimed 8503697 8537897 Kswapd low wmark quickly 3100 3397 Kswapd high wmark quickly 1860 7243 Kswapd skip congestion_wait 708 801 Pages activated 9635 9573 Pages deactivated 1432 1271 Pages written 223 1130 Total pages scanned 17734836 17698943 Total pages reclaimed 8652616 8648834 %age total pages scanned/reclaimed 48.79% 48.87% %age total pages scanned/written 0.00% 0.01% proc vmstat: Faults Major Faults 165 221 Minor Faults 9655785 9656506 Page ins 3880 7228 Page outs 37692940 37480076 Swap ins 0 69 Swap outs 19 15 Again fewer pages are scanned and reclaimed as expected and this time the test completed faster. Note that kswapd is hitting its watermarks faster (low and high wmark quickly) which I expect is due to kswapd reclaiming fewer pages. I also ran fs-mark, iozone and sysbench but there is nothing interesting to report in the figures. Performance is not significantly changed and the reclaim statistics look reasonable. Tgis patch: When the allocator enters its slow path, kswapd is woken up to balance the node. It continues working until all zones within the node are balanced. For order-0 allocations, this makes perfect sense but for higher orders it can have unintended side-effects. If the zone sizes are imbalanced, kswapd may reclaim heavily within a smaller zone discarding an excessive number of pages. The user-visible behaviour is that kswapd is awake and reclaiming even though plenty of pages are free from a suitable zone. This patch alters the "balance" logic for high-order reclaim allowing kswapd to stop if any suitable zone becomes balanced to reduce the number of pages it reclaims from other zones. kswapd still tries to ensure that order-0 watermarks for all zones are met before sleeping. Signed-off-by: Mel Gorman Reviewed-by: Minchan Kim Reviewed-by: KAMEZAWA Hiroyuki Reviewed-by: Eric B Munson Cc: Simon Kirby Cc: KOSAKI Motohiro Cc: Shaohua Li Cc: Dave Hansen Cc: Johannes Weiner Cc: Rik van Riel Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mmzone.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 48906629335c..dad3612a7e39 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -639,6 +639,7 @@ typedef struct pglist_data { wait_queue_head_t kswapd_wait; struct task_struct *kswapd; int kswapd_max_order; + enum zone_type classzone_idx; } pg_data_t; #define node_present_pages(nid) (NODE_DATA(nid)->node_present_pages) @@ -654,7 +655,7 @@ typedef struct pglist_data { extern struct mutex zonelists_mutex; void build_all_zonelists(void *data); -void wakeup_kswapd(struct zone *zone, int order); +void wakeup_kswapd(struct zone *zone, int order, enum zone_type classzone_idx); bool zone_watermark_ok(struct zone *z, int order, unsigned long mark, int classzone_idx, int alloc_flags); bool zone_watermark_ok_safe(struct zone *z, int order, unsigned long mark, -- cgit v1.2.3 From e9da73d67729b58bba256123e2b4651e0d8a01ac Mon Sep 17 00:00:00 2001 From: Andrea Arcangeli Date: Thu, 13 Jan 2011 15:46:32 -0800 Subject: thp: compound_lock Add a new compound_lock() needed to serialize put_page against __split_huge_page_refcount(). Signed-off-by: Andrea Arcangeli Acked-by: Rik van Riel Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm.h | 34 ++++++++++++++++++++++++++++++++++ include/linux/page-flags.h | 12 +++++++++++- 2 files changed, 45 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index 57e11b2a18ba..3b1754ad8785 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -14,6 +14,7 @@ #include #include #include +#include struct mempolicy; struct anon_vma; @@ -305,6 +306,39 @@ static inline int is_vmalloc_or_module_addr(const void *x) } #endif +static inline void compound_lock(struct page *page) +{ +#ifdef CONFIG_TRANSPARENT_HUGEPAGE + bit_spin_lock(PG_compound_lock, &page->flags); +#endif +} + +static inline void compound_unlock(struct page *page) +{ +#ifdef CONFIG_TRANSPARENT_HUGEPAGE + bit_spin_unlock(PG_compound_lock, &page->flags); +#endif +} + +static inline unsigned long compound_lock_irqsave(struct page *page) +{ + unsigned long uninitialized_var(flags); +#ifdef CONFIG_TRANSPARENT_HUGEPAGE + local_irq_save(flags); + compound_lock(page); +#endif + return flags; +} + +static inline void compound_unlock_irqrestore(struct page *page, + unsigned long flags) +{ +#ifdef CONFIG_TRANSPARENT_HUGEPAGE + compound_unlock(page); + local_irq_restore(flags); +#endif +} + static inline struct page *compound_head(struct page *page) { if (unlikely(PageTail(page))) diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h index 4805fdec8d6e..5a743cc87238 100644 --- a/include/linux/page-flags.h +++ b/include/linux/page-flags.h @@ -107,6 +107,9 @@ enum pageflags { #endif #ifdef CONFIG_MEMORY_FAILURE PG_hwpoison, /* hardware poisoned page. Don't touch */ +#endif +#ifdef CONFIG_TRANSPARENT_HUGEPAGE + PG_compound_lock, #endif __NR_PAGEFLAGS, @@ -397,6 +400,12 @@ static inline void __ClearPageTail(struct page *page) #define __PG_MLOCKED 0 #endif +#ifdef CONFIG_TRANSPARENT_HUGEPAGE +#define __PG_COMPOUND_LOCK (1 << PG_compound_lock) +#else +#define __PG_COMPOUND_LOCK 0 +#endif + /* * Flags checked when a page is freed. Pages being freed should not have * these flags set. It they are, there is a problem. @@ -406,7 +415,8 @@ static inline void __ClearPageTail(struct page *page) 1 << PG_private | 1 << PG_private_2 | \ 1 << PG_buddy | 1 << PG_writeback | 1 << PG_reserved | \ 1 << PG_slab | 1 << PG_swapcache | 1 << PG_active | \ - 1 << PG_unevictable | __PG_MLOCKED | __PG_HWPOISON) + 1 << PG_unevictable | __PG_MLOCKED | __PG_HWPOISON | \ + __PG_COMPOUND_LOCK) /* * Flags checked when a page is prepped for return by the page allocator. -- cgit v1.2.3 From 9180706344487700b40da9eca5dedd3d11cb33b4 Mon Sep 17 00:00:00 2001 From: Andrea Arcangeli Date: Thu, 13 Jan 2011 15:46:32 -0800 Subject: thp: alter compound get_page/put_page Alter compound get_page/put_page to keep references on subpages too, in order to allow __split_huge_page_refcount to split an hugepage even while subpages have been pinned by one of the get_user_pages() variants. Signed-off-by: Andrea Arcangeli Acked-by: Rik van Riel Acked-by: Mel Gorman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm.h | 24 ++++++++++++++++++++++-- 1 file changed, 22 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index 3b1754ad8785..a2718e1ed585 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -353,9 +353,29 @@ static inline int page_count(struct page *page) static inline void get_page(struct page *page) { - page = compound_head(page); - VM_BUG_ON(atomic_read(&page->_count) == 0); + /* + * Getting a normal page or the head of a compound page + * requires to already have an elevated page->_count. Only if + * we're getting a tail page, the elevated page->_count is + * required only in the head page, so for tail pages the + * bugcheck only verifies that the page->_count isn't + * negative. + */ + VM_BUG_ON(atomic_read(&page->_count) < !PageTail(page)); atomic_inc(&page->_count); + /* + * Getting a tail page will elevate both the head and tail + * page->_count(s). + */ + if (unlikely(PageTail(page))) { + /* + * This is safe only because + * __split_huge_page_refcount can't run under + * get_page(). + */ + VM_BUG_ON(atomic_read(&page->first_page->_count) <= 0); + atomic_inc(&page->first_page->_count); + } } static inline struct page *virt_to_head_page(const void *x) -- cgit v1.2.3 From 14fd403f2146f740942d78af4e0ee59396ad8eab Mon Sep 17 00:00:00 2001 From: Andrea Arcangeli Date: Thu, 13 Jan 2011 15:46:37 -0800 Subject: thp: export maybe_mkwrite huge_memory.c needs it too when it fallbacks in copying hugepages into regular fragmented pages if hugepage allocation fails during COW. Signed-off-by: Andrea Arcangeli Acked-by: Rik van Riel Acked-by: Mel Gorman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index a2718e1ed585..6bef67d74adf 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -429,6 +429,19 @@ static inline void set_compound_order(struct page *page, unsigned long order) page[1].lru.prev = (void *)order; } +/* + * Do pte_mkwrite, but only if the vma says VM_WRITE. We do this when + * servicing faults for write access. In the normal case, do always want + * pte_mkwrite. But get_user_pages can cause write faults for mappings + * that do not have writing enabled, when used by access_process_vm. + */ +static inline pte_t maybe_mkwrite(pte_t pte, struct vm_area_struct *vma) +{ + if (likely(vma->vm_flags & VM_WRITE)) + pte = pte_mkwrite(pte); + return pte; +} + /* * Multiple processes may "see" the same page. E.g. for untouched * mappings of /dev/null, all processes see the same page full of -- cgit v1.2.3 From 8ac1f8320a0073f28cf9e0491af4cd98f504f92a Mon Sep 17 00:00:00 2001 From: Andrea Arcangeli Date: Thu, 13 Jan 2011 15:46:43 -0800 Subject: thp: pte alloc trans splitting pte alloc routines must wait for split_huge_page if the pmd is not present and not null (i.e. pmd_trans_splitting). The additional branches are optimized away at compile time by pmd_trans_splitting if the config option is off. However we must pass the vma down in order to know the anon_vma lock to wait for. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Andrea Arcangeli Acked-by: Rik van Riel Acked-by: Mel Gorman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm.h | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index 6bef67d74adf..14ddd98b063f 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1131,7 +1131,8 @@ static inline int __pmd_alloc(struct mm_struct *mm, pud_t *pud, int __pmd_alloc(struct mm_struct *mm, pud_t *pud, unsigned long address); #endif -int __pte_alloc(struct mm_struct *mm, pmd_t *pmd, unsigned long address); +int __pte_alloc(struct mm_struct *mm, struct vm_area_struct *vma, + pmd_t *pmd, unsigned long address); int __pte_alloc_kernel(pmd_t *pmd, unsigned long address); /* @@ -1200,16 +1201,18 @@ static inline void pgtable_page_dtor(struct page *page) pte_unmap(pte); \ } while (0) -#define pte_alloc_map(mm, pmd, address) \ - ((unlikely(!pmd_present(*(pmd))) && __pte_alloc(mm, pmd, address))? \ - NULL: pte_offset_map(pmd, address)) +#define pte_alloc_map(mm, vma, pmd, address) \ + ((unlikely(pmd_none(*(pmd))) && __pte_alloc(mm, vma, \ + pmd, address))? \ + NULL: pte_offset_map(pmd, address)) #define pte_alloc_map_lock(mm, pmd, address, ptlp) \ - ((unlikely(!pmd_present(*(pmd))) && __pte_alloc(mm, pmd, address))? \ + ((unlikely(pmd_none(*(pmd))) && __pte_alloc(mm, NULL, \ + pmd, address))? \ NULL: pte_offset_map_lock(mm, pmd, address, ptlp)) #define pte_alloc_kernel(pmd, address) \ - ((unlikely(!pmd_present(*(pmd))) && __pte_alloc_kernel(pmd, address))? \ + ((unlikely(pmd_none(*(pmd))) && __pte_alloc_kernel(pmd, address))? \ NULL: pte_offset_kernel(pmd, address)) extern void free_area_init(unsigned long * zones_size); -- cgit v1.2.3 From 91a4ee2670e0ee2b0630a0eb24fb9a87ea3acd0a Mon Sep 17 00:00:00 2001 From: Andrea Arcangeli Date: Thu, 13 Jan 2011 15:46:44 -0800 Subject: thp: add pmd mmu_notifier helpers Add mmu notifier helpers to handle pmd huge operations. Signed-off-by: Andrea Arcangeli Acked-by: Rik van Riel Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mmu_notifier.h | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mmu_notifier.h b/include/linux/mmu_notifier.h index 43dcfbdc39de..cbfab1e9957d 100644 --- a/include/linux/mmu_notifier.h +++ b/include/linux/mmu_notifier.h @@ -243,6 +243,32 @@ static inline void mmu_notifier_mm_destroy(struct mm_struct *mm) __pte; \ }) +#define pmdp_clear_flush_notify(__vma, __address, __pmdp) \ +({ \ + pmd_t __pmd; \ + struct vm_area_struct *___vma = __vma; \ + unsigned long ___address = __address; \ + VM_BUG_ON(__address & ~HPAGE_PMD_MASK); \ + mmu_notifier_invalidate_range_start(___vma->vm_mm, ___address, \ + (__address)+HPAGE_PMD_SIZE);\ + __pmd = pmdp_clear_flush(___vma, ___address, __pmdp); \ + mmu_notifier_invalidate_range_end(___vma->vm_mm, ___address, \ + (__address)+HPAGE_PMD_SIZE); \ + __pmd; \ +}) + +#define pmdp_splitting_flush_notify(__vma, __address, __pmdp) \ +({ \ + struct vm_area_struct *___vma = __vma; \ + unsigned long ___address = __address; \ + VM_BUG_ON(__address & ~HPAGE_PMD_MASK); \ + mmu_notifier_invalidate_range_start(___vma->vm_mm, ___address, \ + (__address)+HPAGE_PMD_SIZE);\ + pmdp_splitting_flush(___vma, ___address, __pmdp); \ + mmu_notifier_invalidate_range_end(___vma->vm_mm, ___address, \ + (__address)+HPAGE_PMD_SIZE); \ +}) + #define ptep_clear_flush_young_notify(__vma, __address, __ptep) \ ({ \ int __young; \ @@ -254,6 +280,17 @@ static inline void mmu_notifier_mm_destroy(struct mm_struct *mm) __young; \ }) +#define pmdp_clear_flush_young_notify(__vma, __address, __pmdp) \ +({ \ + int __young; \ + struct vm_area_struct *___vma = __vma; \ + unsigned long ___address = __address; \ + __young = pmdp_clear_flush_young(___vma, ___address, __pmdp); \ + __young |= mmu_notifier_clear_flush_young(___vma->vm_mm, \ + ___address); \ + __young; \ +}) + #define set_pte_at_notify(__mm, __address, __ptep, __pte) \ ({ \ struct mm_struct *___mm = __mm; \ @@ -305,7 +342,10 @@ static inline void mmu_notifier_mm_destroy(struct mm_struct *mm) } #define ptep_clear_flush_young_notify ptep_clear_flush_young +#define pmdp_clear_flush_young_notify pmdp_clear_flush_young #define ptep_clear_flush_notify ptep_clear_flush +#define pmdp_clear_flush_notify pmdp_clear_flush +#define pmdp_splitting_flush_notify pmdp_splitting_flush #define set_pte_at_notify set_pte_at #endif /* CONFIG_MMU_NOTIFIER */ -- cgit v1.2.3 From 4e6af67e970a2ac287739a4c526c857b5bda27ec Mon Sep 17 00:00:00 2001 From: Andrea Arcangeli Date: Thu, 13 Jan 2011 15:46:44 -0800 Subject: thp: clear page compound split_huge_page must transform a compound page to a regular page and needs ClearPageCompound. Signed-off-by: Andrea Arcangeli Acked-by: Rik van Riel Reviewed-by: Christoph Lameter Acked-by: Mel Gorman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/page-flags.h | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h index 5a743cc87238..4835cae71047 100644 --- a/include/linux/page-flags.h +++ b/include/linux/page-flags.h @@ -347,7 +347,7 @@ static inline void set_page_writeback(struct page *page) * tests can be used in performance sensitive paths. PageCompound is * generally not used in hot code paths. */ -__PAGEFLAG(Head, head) +__PAGEFLAG(Head, head) CLEARPAGEFLAG(Head, head) __PAGEFLAG(Tail, tail) static inline int PageCompound(struct page *page) @@ -355,6 +355,13 @@ static inline int PageCompound(struct page *page) return page->flags & ((1L << PG_head) | (1L << PG_tail)); } +#ifdef CONFIG_TRANSPARENT_HUGEPAGE +static inline void ClearPageCompound(struct page *page) +{ + BUG_ON(!PageHead(page)); + ClearPageHead(page); +} +#endif #else /* * Reduce page flag use as much as possible by overlapping @@ -392,6 +399,14 @@ static inline void __ClearPageTail(struct page *page) page->flags &= ~PG_head_tail_mask; } +#ifdef CONFIG_TRANSPARENT_HUGEPAGE +static inline void ClearPageCompound(struct page *page) +{ + BUG_ON((page->flags & PG_head_tail_mask) != (1 << PG_compound)); + clear_bit(PG_compound, &page->flags); +} +#endif + #endif /* !PAGEFLAGS_EXTENDED */ #ifdef CONFIG_MMU -- cgit v1.2.3 From e7a00c45f29c0155007aa150bf231a70fa470365 Mon Sep 17 00:00:00 2001 From: Andrea Arcangeli Date: Thu, 13 Jan 2011 15:46:45 -0800 Subject: thp: add pmd_huge_pte to mm_struct This increase the size of the mm struct a bit but it is needed to preallocate one pte for each hugepage so that split_huge_page will not require a fail path. Guarantee of success is a fundamental property of split_huge_page to avoid decrasing swapping reliability and to avoid adding -ENOMEM fail paths that would otherwise force the hugepage-unaware VM code to learn rolling back in the middle of its pte mangling operations (if something we need it to learn handling pmd_trans_huge natively rather being capable of rollback). When split_huge_page runs a pte is needed to succeed the split, to map the newly splitted regular pages with a regular pte. This way all existing VM code remains backwards compatible by just adding a split_huge_page* one liner. The memory waste of those preallocated ptes is negligible and so it is worth it. Signed-off-by: Andrea Arcangeli Acked-by: Rik van Riel Acked-by: Mel Gorman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm_types.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index bb7288a782fd..26bc4e2cd275 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -309,6 +309,9 @@ struct mm_struct { #endif #ifdef CONFIG_MMU_NOTIFIER struct mmu_notifier_mm *mmu_notifier_mm; +#endif +#ifdef CONFIG_TRANSPARENT_HUGEPAGE + pgtable_t pmd_huge_pte; /* protected by page_table_lock */ #endif /* How many tasks sharing this mm are OOM_DISABLE */ atomic_t oom_disable_count; -- cgit v1.2.3 From 47ad8475c000141eacb3ecda5e5ce4b43a9cd04d Mon Sep 17 00:00:00 2001 From: Andrea Arcangeli Date: Thu, 13 Jan 2011 15:46:47 -0800 Subject: thp: clear_copy_huge_page Move the copy/clear_huge_page functions to common code to share between hugetlb.c and huge_memory.c. Signed-off-by: Andrea Arcangeli Acked-by: Rik van Riel Acked-by: Mel Gorman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index 14ddd98b063f..cc6ab1038f6f 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1589,5 +1589,14 @@ static inline int is_hwpoison_address(unsigned long addr) extern void dump_page(struct page *page); +#if defined(CONFIG_TRANSPARENT_HUGEPAGE) || defined(CONFIG_HUGETLBFS) +extern void clear_huge_page(struct page *page, + unsigned long addr, + unsigned int pages_per_huge_page); +extern void copy_user_huge_page(struct page *dst, struct page *src, + unsigned long addr, struct vm_area_struct *vma, + unsigned int pages_per_huge_page); +#endif /* CONFIG_TRANSPARENT_HUGEPAGE || CONFIG_HUGETLBFS */ + #endif /* __KERNEL__ */ #endif /* _LINUX_MM_H */ -- cgit v1.2.3 From 936a5fe6e6148c0b3ea0d792b903847d9b9931a1 Mon Sep 17 00:00:00 2001 From: Andrea Arcangeli Date: Thu, 13 Jan 2011 15:46:48 -0800 Subject: thp: kvm mmu transparent hugepage support This should work for both hugetlbfs and transparent hugepages. [akpm@linux-foundation.org: bring forward PageTransCompound() addition for bisectability] Signed-off-by: Andrea Arcangeli Cc: Avi Kivity Cc: Marcelo Tosatti Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/page-flags.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'include/linux') diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h index 4835cae71047..907f1605926b 100644 --- a/include/linux/page-flags.h +++ b/include/linux/page-flags.h @@ -409,6 +409,18 @@ static inline void ClearPageCompound(struct page *page) #endif /* !PAGEFLAGS_EXTENDED */ +#ifdef CONFIG_TRANSPARENT_HUGEPAGE +static inline int PageTransCompound(struct page *page) +{ + return PageCompound(page); +} +#else +static inline int PageTransCompound(struct page *page) +{ + return 0; +} +#endif + #ifdef CONFIG_MMU #define __PG_MLOCKED (1 << PG_mlocked) #else -- cgit v1.2.3 From 32dba98e085f8b2b4345887df9abf5e0e93bfc12 Mon Sep 17 00:00:00 2001 From: Andrea Arcangeli Date: Thu, 13 Jan 2011 15:46:49 -0800 Subject: thp: _GFP_NO_KSWAPD Transparent hugepage allocations must be allowed not to invoke kswapd or any other kind of indirect reclaim (especially when the defrag sysfs is control disabled). It's unacceptable to swap out anonymous pages (potentially anonymous transparent hugepages) in order to create new transparent hugepages. This is true for the MADV_HUGEPAGE areas too (swapping out a kvm virtual machine and so having it suffer an unbearable slowdown, so another one with guest physical memory marked MADV_HUGEPAGE can run 30% faster if it is running memory intensive workloads, makes no sense). If a transparent hugepage allocation fails the slowdown is minor and there is total fallback, so kswapd should never be asked to swapout memory to allow the high order allocation to succeed. Signed-off-by: Andrea Arcangeli Acked-by: Rik van Riel Acked-by: Mel Gorman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/gfp.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/gfp.h b/include/linux/gfp.h index f54adfcbec9c..49d2356bb82d 100644 --- a/include/linux/gfp.h +++ b/include/linux/gfp.h @@ -34,6 +34,7 @@ struct vm_area_struct; #else #define ___GFP_NOTRACK 0 #endif +#define ___GFP_NO_KSWAPD 0x400000u /* * GFP bitmasks.. @@ -81,13 +82,15 @@ struct vm_area_struct; #define __GFP_RECLAIMABLE ((__force gfp_t)___GFP_RECLAIMABLE) /* Page is reclaimable */ #define __GFP_NOTRACK ((__force gfp_t)___GFP_NOTRACK) /* Don't track with kmemcheck */ +#define __GFP_NO_KSWAPD ((__force gfp_t)___GFP_NO_KSWAPD) + /* * This may seem redundant, but it's a way of annotating false positives vs. * allocations that simply cannot be supported (e.g. page tables). */ #define __GFP_NOTRACK_FALSE_POSITIVE (__GFP_NOTRACK) -#define __GFP_BITS_SHIFT 22 /* Room for 22 __GFP_FOO bits */ +#define __GFP_BITS_SHIFT 23 /* Room for 23 __GFP_FOO bits */ #define __GFP_BITS_MASK ((__force gfp_t)((1 << __GFP_BITS_SHIFT) - 1)) /* This equals 0, but use constants in case they ever change */ -- cgit v1.2.3 From 71e3aac0724ffe8918992d76acfe3aad7d8724a5 Mon Sep 17 00:00:00 2001 From: Andrea Arcangeli Date: Thu, 13 Jan 2011 15:46:52 -0800 Subject: thp: transparent hugepage core Lately I've been working to make KVM use hugepages transparently without the usual restrictions of hugetlbfs. Some of the restrictions I'd like to see removed: 1) hugepages have to be swappable or the guest physical memory remains locked in RAM and can't be paged out to swap 2) if a hugepage allocation fails, regular pages should be allocated instead and mixed in the same vma without any failure and without userland noticing 3) if some task quits and more hugepages become available in the buddy, guest physical memory backed by regular pages should be relocated on hugepages automatically in regions under madvise(MADV_HUGEPAGE) (ideally event driven by waking up the kernel deamon if the order=HPAGE_PMD_SHIFT-PAGE_SHIFT list becomes not null) 4) avoidance of reservation and maximization of use of hugepages whenever possible. Reservation (needed to avoid runtime fatal faliures) may be ok for 1 machine with 1 database with 1 database cache with 1 database cache size known at boot time. It's definitely not feasible with a virtualization hypervisor usage like RHEV-H that runs an unknown number of virtual machines with an unknown size of each virtual machine with an unknown amount of pagecache that could be potentially useful in the host for guest not using O_DIRECT (aka cache=off). hugepages in the virtualization hypervisor (and also in the guest!) are much more important than in a regular host not using virtualization, becasue with NPT/EPT they decrease the tlb-miss cacheline accesses from 24 to 19 in case only the hypervisor uses transparent hugepages, and they decrease the tlb-miss cacheline accesses from 19 to 15 in case both the linux hypervisor and the linux guest both uses this patch (though the guest will limit the addition speedup to anonymous regions only for now...). Even more important is that the tlb miss handler is much slower on a NPT/EPT guest than for a regular shadow paging or no-virtualization scenario. So maximizing the amount of virtual memory cached by the TLB pays off significantly more with NPT/EPT than without (even if there would be no significant speedup in the tlb-miss runtime). The first (and more tedious) part of this work requires allowing the VM to handle anonymous hugepages mixed with regular pages transparently on regular anonymous vmas. This is what this patch tries to achieve in the least intrusive possible way. We want hugepages and hugetlb to be used in a way so that all applications can benefit without changes (as usual we leverage the KVM virtualization design: by improving the Linux VM at large, KVM gets the performance boost too). The most important design choice is: always fallback to 4k allocation if the hugepage allocation fails! This is the _very_ opposite of some large pagecache patches that failed with -EIO back then if a 64k (or similar) allocation failed... Second important decision (to reduce the impact of the feature on the existing pagetable handling code) is that at any time we can split an hugepage into 512 regular pages and it has to be done with an operation that can't fail. This way the reliability of the swapping isn't decreased (no need to allocate memory when we are short on memory to swap) and it's trivial to plug a split_huge_page* one-liner where needed without polluting the VM. Over time we can teach mprotect, mremap and friends to handle pmd_trans_huge natively without calling split_huge_page*. The fact it can't fail isn't just for swap: if split_huge_page would return -ENOMEM (instead of the current void) we'd need to rollback the mprotect from the middle of it (ideally including undoing the split_vma) which would be a big change and in the very wrong direction (it'd likely be simpler not to call split_huge_page at all and to teach mprotect and friends to handle hugepages instead of rolling them back from the middle). In short the very value of split_huge_page is that it can't fail. The collapsing and madvise(MADV_HUGEPAGE) part will remain separated and incremental and it'll just be an "harmless" addition later if this initial part is agreed upon. It also should be noted that locking-wise replacing regular pages with hugepages is going to be very easy if compared to what I'm doing below in split_huge_page, as it will only happen when page_count(page) matches page_mapcount(page) if we can take the PG_lock and mmap_sem in write mode. collapse_huge_page will be a "best effort" that (unlike split_huge_page) can fail at the minimal sign of trouble and we can try again later. collapse_huge_page will be similar to how KSM works and the madvise(MADV_HUGEPAGE) will work similar to madvise(MADV_MERGEABLE). The default I like is that transparent hugepages are used at page fault time. This can be changed with /sys/kernel/mm/transparent_hugepage/enabled. The control knob can be set to three values "always", "madvise", "never" which mean respectively that hugepages are always used, or only inside madvise(MADV_HUGEPAGE) regions, or never used. /sys/kernel/mm/transparent_hugepage/defrag instead controls if the hugepage allocation should defrag memory aggressively "always", only inside "madvise" regions, or "never". The pmd_trans_splitting/pmd_trans_huge locking is very solid. The put_page (from get_user_page users that can't use mmu notifier like O_DIRECT) that runs against a __split_huge_page_refcount instead was a pain to serialize in a way that would result always in a coherent page count for both tail and head. I think my locking solution with a compound_lock taken only after the page_first is valid and is still a PageHead should be safe but it surely needs review from SMP race point of view. In short there is no current existing way to serialize the O_DIRECT final put_page against split_huge_page_refcount so I had to invent a new one (O_DIRECT loses knowledge on the mapping status by the time gup_fast returns so...). And I didn't want to impact all gup/gup_fast users for now, maybe if we change the gup interface substantially we can avoid this locking, I admit I didn't think too much about it because changing the gup unpinning interface would be invasive. If we ignored O_DIRECT we could stick to the existing compound refcounting code, by simply adding a get_user_pages_fast_flags(foll_flags) where KVM (and any other mmu notifier user) would call it without FOLL_GET (and if FOLL_GET isn't set we'd just BUG_ON if nobody registered itself in the current task mmu notifier list yet). But O_DIRECT is fundamental for decent performance of virtualized I/O on fast storage so we can't avoid it to solve the race of put_page against split_huge_page_refcount to achieve a complete hugepage feature for KVM. Swap and oom works fine (well just like with regular pages ;). MMU notifier is handled transparently too, with the exception of the young bit on the pmd, that didn't have a range check but I think KVM will be fine because the whole point of hugepages is that EPT/NPT will also use a huge pmd when they notice gup returns pages with PageCompound set, so they won't care of a range and there's just the pmd young bit to check in that case. NOTE: in some cases if the L2 cache is small, this may slowdown and waste memory during COWs because 4M of memory are accessed in a single fault instead of 8k (the payoff is that after COW the program can run faster). So we might want to switch the copy_huge_page (and clear_huge_page too) to not temporal stores. I also extensively researched ways to avoid this cache trashing with a full prefault logic that would cow in 8k/16k/32k/64k up to 1M (I can send those patches that fully implemented prefault) but I concluded they're not worth it and they add an huge additional complexity and they remove all tlb benefits until the full hugepage has been faulted in, to save a little bit of memory and some cache during app startup, but they still don't improve substantially the cache-trashing during startup if the prefault happens in >4k chunks. One reason is that those 4k pte entries copied are still mapped on a perfectly cache-colored hugepage, so the trashing is the worst one can generate in those copies (cow of 4k page copies aren't so well colored so they trashes less, but again this results in software running faster after the page fault). Those prefault patches allowed things like a pte where post-cow pages were local 4k regular anon pages and the not-yet-cowed pte entries were pointing in the middle of some hugepage mapped read-only. If it doesn't payoff substantially with todays hardware it will payoff even less in the future with larger l2 caches, and the prefault logic would blot the VM a lot. If one is emebdded transparent_hugepage can be disabled during boot with sysfs or with the boot commandline parameter transparent_hugepage=0 (or transparent_hugepage=2 to restrict hugepages inside madvise regions) that will ensure not a single hugepage is allocated at boot time. It is simple enough to just disable transparent hugepage globally and let transparent hugepages be allocated selectively by applications in the MADV_HUGEPAGE region (both at page fault time, and if enabled with the collapse_huge_page too through the kernel daemon). This patch supports only hugepages mapped in the pmd, archs that have smaller hugepages will not fit in this patch alone. Also some archs like power have certain tlb limits that prevents mixing different page size in the same regions so they will not fit in this framework that requires "graceful fallback" to basic PAGE_SIZE in case of physical memory fragmentation. hugetlbfs remains a perfect fit for those because its software limits happen to match the hardware limits. hugetlbfs also remains a perfect fit for hugepage sizes like 1GByte that cannot be hoped to be found not fragmented after a certain system uptime and that would be very expensive to defragment with relocation, so requiring reservation. hugetlbfs is the "reservation way", the point of transparent hugepages is not to have any reservation at all and maximizing the use of cache and hugepages at all times automatically. Some performance result: vmx andrea # LD_PRELOAD=/usr/lib64/libhugetlbfs.so HUGETLB_MORECORE=yes HUGETLB_PATH=/mnt/huge/ ./largep ages3 memset page fault 1566023 memset tlb miss 453854 memset second tlb miss 453321 random access tlb miss 41635 random access second tlb miss 41658 vmx andrea # LD_PRELOAD=/usr/lib64/libhugetlbfs.so HUGETLB_MORECORE=yes HUGETLB_PATH=/mnt/huge/ ./largepages3 memset page fault 1566471 memset tlb miss 453375 memset second tlb miss 453320 random access tlb miss 41636 random access second tlb miss 41637 vmx andrea # ./largepages3 memset page fault 1566642 memset tlb miss 453417 memset second tlb miss 453313 random access tlb miss 41630 random access second tlb miss 41647 vmx andrea # ./largepages3 memset page fault 1566872 memset tlb miss 453418 memset second tlb miss 453315 random access tlb miss 41618 random access second tlb miss 41659 vmx andrea # echo 0 > /proc/sys/vm/transparent_hugepage vmx andrea # ./largepages3 memset page fault 2182476 memset tlb miss 460305 memset second tlb miss 460179 random access tlb miss 44483 random access second tlb miss 44186 vmx andrea # ./largepages3 memset page fault 2182791 memset tlb miss 460742 memset second tlb miss 459962 random access tlb miss 43981 random access second tlb miss 43988 ============ #include #include #include #include #define SIZE (3UL*1024*1024*1024) int main() { char *p = malloc(SIZE), *p2; struct timeval before, after; gettimeofday(&before, NULL); memset(p, 0, SIZE); gettimeofday(&after, NULL); printf("memset page fault %Lu\n", (after.tv_sec-before.tv_sec)*1000000UL + after.tv_usec-before.tv_usec); gettimeofday(&before, NULL); memset(p, 0, SIZE); gettimeofday(&after, NULL); printf("memset tlb miss %Lu\n", (after.tv_sec-before.tv_sec)*1000000UL + after.tv_usec-before.tv_usec); gettimeofday(&before, NULL); memset(p, 0, SIZE); gettimeofday(&after, NULL); printf("memset second tlb miss %Lu\n", (after.tv_sec-before.tv_sec)*1000000UL + after.tv_usec-before.tv_usec); gettimeofday(&before, NULL); for (p2 = p; p2 < p+SIZE; p2 += 4096) *p2 = 0; gettimeofday(&after, NULL); printf("random access tlb miss %Lu\n", (after.tv_sec-before.tv_sec)*1000000UL + after.tv_usec-before.tv_usec); gettimeofday(&before, NULL); for (p2 = p; p2 < p+SIZE; p2 += 4096) *p2 = 0; gettimeofday(&after, NULL); printf("random access second tlb miss %Lu\n", (after.tv_sec-before.tv_sec)*1000000UL + after.tv_usec-before.tv_usec); return 0; } ============ Signed-off-by: Andrea Arcangeli Acked-by: Rik van Riel Signed-off-by: Johannes Weiner Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/gfp.h | 3 ++ include/linux/huge_mm.h | 118 +++++++++++++++++++++++++++++++++++++++++++++ include/linux/mm.h | 4 ++ include/linux/mm_inline.h | 11 ++++- include/linux/page-flags.h | 21 ++++++++ include/linux/rmap.h | 2 + include/linux/swap.h | 2 + 7 files changed, 159 insertions(+), 2 deletions(-) create mode 100644 include/linux/huge_mm.h (limited to 'include/linux') diff --git a/include/linux/gfp.h b/include/linux/gfp.h index 49d2356bb82d..d95082cc6f4a 100644 --- a/include/linux/gfp.h +++ b/include/linux/gfp.h @@ -109,6 +109,9 @@ struct vm_area_struct; __GFP_HARDWALL | __GFP_HIGHMEM | \ __GFP_MOVABLE) #define GFP_IOFS (__GFP_IO | __GFP_FS) +#define GFP_TRANSHUGE (GFP_HIGHUSER_MOVABLE | __GFP_COMP | \ + __GFP_NOMEMALLOC | __GFP_NORETRY | __GFP_NOWARN | \ + __GFP_NO_KSWAPD) #ifdef CONFIG_NUMA #define GFP_THISNODE (__GFP_THISNODE | __GFP_NOWARN | __GFP_NORETRY) diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h new file mode 100644 index 000000000000..9301824c7491 --- /dev/null +++ b/include/linux/huge_mm.h @@ -0,0 +1,118 @@ +#ifndef _LINUX_HUGE_MM_H +#define _LINUX_HUGE_MM_H + +extern int do_huge_pmd_anonymous_page(struct mm_struct *mm, + struct vm_area_struct *vma, + unsigned long address, pmd_t *pmd, + unsigned int flags); +extern int copy_huge_pmd(struct mm_struct *dst_mm, struct mm_struct *src_mm, + pmd_t *dst_pmd, pmd_t *src_pmd, unsigned long addr, + struct vm_area_struct *vma); +extern int do_huge_pmd_wp_page(struct mm_struct *mm, struct vm_area_struct *vma, + unsigned long address, pmd_t *pmd, + pmd_t orig_pmd); +extern pgtable_t get_pmd_huge_pte(struct mm_struct *mm); +extern struct page *follow_trans_huge_pmd(struct mm_struct *mm, + unsigned long addr, + pmd_t *pmd, + unsigned int flags); +extern int zap_huge_pmd(struct mmu_gather *tlb, + struct vm_area_struct *vma, + pmd_t *pmd); + +enum transparent_hugepage_flag { + TRANSPARENT_HUGEPAGE_FLAG, + TRANSPARENT_HUGEPAGE_REQ_MADV_FLAG, + TRANSPARENT_HUGEPAGE_DEFRAG_FLAG, + TRANSPARENT_HUGEPAGE_DEFRAG_REQ_MADV_FLAG, +#ifdef CONFIG_DEBUG_VM + TRANSPARENT_HUGEPAGE_DEBUG_COW_FLAG, +#endif +}; + +enum page_check_address_pmd_flag { + PAGE_CHECK_ADDRESS_PMD_FLAG, + PAGE_CHECK_ADDRESS_PMD_NOTSPLITTING_FLAG, + PAGE_CHECK_ADDRESS_PMD_SPLITTING_FLAG, +}; +extern pmd_t *page_check_address_pmd(struct page *page, + struct mm_struct *mm, + unsigned long address, + enum page_check_address_pmd_flag flag); + +#ifdef CONFIG_TRANSPARENT_HUGEPAGE +#define HPAGE_PMD_SHIFT HPAGE_SHIFT +#define HPAGE_PMD_MASK HPAGE_MASK +#define HPAGE_PMD_SIZE HPAGE_SIZE + +#define transparent_hugepage_enabled(__vma) \ + (transparent_hugepage_flags & (1<vm_flags & VM_HUGEPAGE)) +#define transparent_hugepage_defrag(__vma) \ + ((transparent_hugepage_flags & \ + (1<vm_flags & VM_HUGEPAGE)) +#ifdef CONFIG_DEBUG_VM +#define transparent_hugepage_debug_cow() \ + (transparent_hugepage_flags & \ + (1<root->lock); \ + /* \ + * spin_unlock_wait() is just a loop in C and so the \ + * CPU can reorder anything around it. \ + */ \ + smp_mb(); \ + BUG_ON(pmd_trans_splitting(*____pmd) || \ + pmd_trans_huge(*____pmd)); \ + } while (0) +#define HPAGE_PMD_ORDER (HPAGE_PMD_SHIFT-PAGE_SHIFT) +#define HPAGE_PMD_NR (1< MAX_ORDER +#error "hugepages can't be allocated by the buddy allocator" +#endif +#else /* CONFIG_TRANSPARENT_HUGEPAGE */ +#define HPAGE_PMD_SHIFT ({ BUG(); 0; }) +#define HPAGE_PMD_MASK ({ BUG(); 0; }) +#define HPAGE_PMD_SIZE ({ BUG(); 0; }) + +#define transparent_hugepage_enabled(__vma) 0 + +#define transparent_hugepage_flags 0UL +static inline int split_huge_page(struct page *page) +{ + return 0; +} +#define split_huge_page_pmd(__mm, __pmd) \ + do { } while (0) +#define wait_split_huge_page(__anon_vma, __pmd) \ + do { } while (0) +#endif /* CONFIG_TRANSPARENT_HUGEPAGE */ + +#endif /* _LINUX_HUGE_MM_H */ diff --git a/include/linux/mm.h b/include/linux/mm.h index cc6ab1038f6f..78adec4ba9f4 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -111,6 +111,9 @@ extern unsigned int kobjsize(const void *objp); #define VM_SAO 0x20000000 /* Strong Access Ordering (powerpc) */ #define VM_PFN_AT_MMAP 0x40000000 /* PFNMAP vma that is fully mapped at mmap time */ #define VM_MERGEABLE 0x80000000 /* KSM may merge identical pages */ +#if BITS_PER_LONG > 32 +#define VM_HUGEPAGE 0x100000000UL /* MADV_HUGEPAGE marked this vma */ +#endif /* Bits set in the VMA until the stack is in its final location */ #define VM_STACK_INCOMPLETE_SETUP (VM_RAND_READ | VM_SEQ_READ) @@ -243,6 +246,7 @@ struct inode; * files which need it (119 of them) */ #include +#include /* * Methods to modify the page usage count. diff --git a/include/linux/mm_inline.h b/include/linux/mm_inline.h index 8835b877b8db..650f31eabdb1 100644 --- a/include/linux/mm_inline.h +++ b/include/linux/mm_inline.h @@ -20,13 +20,20 @@ static inline int page_is_file_cache(struct page *page) } static inline void -add_page_to_lru_list(struct zone *zone, struct page *page, enum lru_list l) +__add_page_to_lru_list(struct zone *zone, struct page *page, enum lru_list l, + struct list_head *head) { - list_add(&page->lru, &zone->lru[l].list); + list_add(&page->lru, head); __inc_zone_state(zone, NR_LRU_BASE + l); mem_cgroup_add_lru_list(page, l); } +static inline void +add_page_to_lru_list(struct zone *zone, struct page *page, enum lru_list l) +{ + __add_page_to_lru_list(zone, page, l, &zone->lru[l].list); +} + static inline void del_page_from_lru_list(struct zone *zone, struct page *page, enum lru_list l) { diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h index 907f1605926b..4ca1241ef94e 100644 --- a/include/linux/page-flags.h +++ b/include/linux/page-flags.h @@ -410,11 +410,32 @@ static inline void ClearPageCompound(struct page *page) #endif /* !PAGEFLAGS_EXTENDED */ #ifdef CONFIG_TRANSPARENT_HUGEPAGE +/* + * PageHuge() only returns true for hugetlbfs pages, but not for + * normal or transparent huge pages. + * + * PageTransHuge() returns true for both transparent huge and + * hugetlbfs pages, but not normal pages. PageTransHuge() can only be + * called only in the core VM paths where hugetlbfs pages can't exist. + */ +static inline int PageTransHuge(struct page *page) +{ + VM_BUG_ON(PageTail(page)); + return PageHead(page); +} + static inline int PageTransCompound(struct page *page) { return PageCompound(page); } + #else + +static inline int PageTransHuge(struct page *page) +{ + return 0; +} + static inline int PageTransCompound(struct page *page) { return 0; diff --git a/include/linux/rmap.h b/include/linux/rmap.h index bb83c0da2071..e9fd04ca1e51 100644 --- a/include/linux/rmap.h +++ b/include/linux/rmap.h @@ -198,6 +198,8 @@ enum ttu_flags { }; #define TTU_ACTION(x) ((x) & TTU_ACTION_MASK) +bool is_vma_temporary_stack(struct vm_area_struct *vma); + int try_to_unmap(struct page *, enum ttu_flags flags); int try_to_unmap_one(struct page *, struct vm_area_struct *, unsigned long address, enum ttu_flags flags); diff --git a/include/linux/swap.h b/include/linux/swap.h index eba53e71d2cc..4d559325d919 100644 --- a/include/linux/swap.h +++ b/include/linux/swap.h @@ -208,6 +208,8 @@ extern unsigned int nr_free_pagecache_pages(void); /* linux/mm/swap.c */ extern void __lru_cache_add(struct page *, enum lru_list lru); extern void lru_cache_add_lru(struct page *, enum lru_list lru); +extern void lru_add_page_tail(struct zone* zone, + struct page *page, struct page *page_tail); extern void activate_page(struct page *); extern void mark_page_accessed(struct page *); extern void lru_add_drain(void); -- cgit v1.2.3 From 0af4e98b6b095c74588af04872f83d333c958c32 Mon Sep 17 00:00:00 2001 From: Andrea Arcangeli Date: Thu, 13 Jan 2011 15:46:55 -0800 Subject: thp: madvise(MADV_HUGEPAGE) Add madvise MADV_HUGEPAGE to mark regions that are important to be hugepage backed. Return -EINVAL if the vma is not of an anonymous type, or the feature isn't built into the kernel. Never silently return success. Signed-off-by: Andrea Arcangeli Acked-by: Rik van Riel Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/huge_mm.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h index 9301824c7491..d9ab70d776e2 100644 --- a/include/linux/huge_mm.h +++ b/include/linux/huge_mm.h @@ -97,6 +97,7 @@ extern void __split_huge_page_pmd(struct mm_struct *mm, pmd_t *pmd); #if HPAGE_PMD_ORDER > MAX_ORDER #error "hugepages can't be allocated by the buddy allocator" #endif +extern int hugepage_madvise(unsigned long *vm_flags); #else /* CONFIG_TRANSPARENT_HUGEPAGE */ #define HPAGE_PMD_SHIFT ({ BUG(); 0; }) #define HPAGE_PMD_MASK ({ BUG(); 0; }) @@ -113,6 +114,11 @@ static inline int split_huge_page(struct page *page) do { } while (0) #define wait_split_huge_page(__anon_vma, __pmd) \ do { } while (0) +static inline int hugepage_madvise(unsigned long *vm_flags) +{ + BUG(); + return 0; +} #endif /* CONFIG_TRANSPARENT_HUGEPAGE */ #endif /* _LINUX_HUGE_MM_H */ -- cgit v1.2.3 From 500d65d471018d9a13b0d51b7e141ed2a3555c1d Mon Sep 17 00:00:00 2001 From: Andrea Arcangeli Date: Thu, 13 Jan 2011 15:46:55 -0800 Subject: thp: pmd_trans_huge migrate bugcheck No pmd_trans_huge should ever materialize in migration ptes areas, because we split the hugepage before migration ptes are instantiated. Signed-off-by: Andrea Arcangeli Acked-by: Rik van Riel Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index 78adec4ba9f4..2ec5138badab 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1490,6 +1490,7 @@ struct page *follow_page(struct vm_area_struct *, unsigned long address, #define FOLL_DUMP 0x08 /* give error on hole if it would be zero */ #define FOLL_FORCE 0x10 /* get_user_pages read/write w/o permission */ #define FOLL_MLOCK 0x40 /* mark page as mlocked */ +#define FOLL_SPLIT 0x80 /* don't return transhuge pages, split them */ typedef int (*pte_fn_t)(pte_t *pte, pgtable_t token, unsigned long addr, void *data); -- cgit v1.2.3 From 79134171df238171daa4c024a42b77b401ccb00b Mon Sep 17 00:00:00 2001 From: Andrea Arcangeli Date: Thu, 13 Jan 2011 15:46:58 -0800 Subject: thp: transparent hugepage vmstat Add hugepage stat information to /proc/vmstat and /proc/meminfo. Signed-off-by: Andrea Arcangeli Acked-by: Rik van Riel Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mmzone.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index dad3612a7e39..02ecb0189b1d 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -114,6 +114,7 @@ enum zone_stat_item { NUMA_LOCAL, /* allocation from local node */ NUMA_OTHER, /* allocation from other node */ #endif + NR_ANON_TRANSPARENT_HUGEPAGES, NR_VM_ZONE_STAT_ITEMS }; /* -- cgit v1.2.3 From ba76149f47d8c939efa0acc07a191237af900471 Mon Sep 17 00:00:00 2001 From: Andrea Arcangeli Date: Thu, 13 Jan 2011 15:46:58 -0800 Subject: thp: khugepaged Add khugepaged to relocate fragmented pages into hugepages if new hugepages become available. (this is indipendent of the defrag logic that will have to make new hugepages available) The fundamental reason why khugepaged is unavoidable, is that some memory can be fragmented and not everything can be relocated. So when a virtual machine quits and releases gigabytes of hugepages, we want to use those freely available hugepages to create huge-pmd in the other virtual machines that may be running on fragmented memory, to maximize the CPU efficiency at all times. The scan is slow, it takes nearly zero cpu time, except when it copies data (in which case it means we definitely want to pay for that cpu time) so it seems a good tradeoff. In addition to the hugepages being released by other process releasing memory, we have the strong suspicion that the performance impact of potentially defragmenting hugepages during or before each page fault could lead to more performance inconsistency than allocating small pages at first and having them collapsed into large pages later... if they prove themselfs to be long lived mappings (khugepaged scan is slow so short lived mappings have low probability to run into khugepaged if compared to long lived mappings). Signed-off-by: Andrea Arcangeli Acked-by: Rik van Riel Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/huge_mm.h | 1 + include/linux/khugepaged.h | 66 ++++++++++++++++++++++++++++++++++++++++++++++ include/linux/sched.h | 1 + 3 files changed, 68 insertions(+) create mode 100644 include/linux/khugepaged.h (limited to 'include/linux') diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h index d9ab70d776e2..43a694ef8904 100644 --- a/include/linux/huge_mm.h +++ b/include/linux/huge_mm.h @@ -25,6 +25,7 @@ enum transparent_hugepage_flag { TRANSPARENT_HUGEPAGE_REQ_MADV_FLAG, TRANSPARENT_HUGEPAGE_DEFRAG_FLAG, TRANSPARENT_HUGEPAGE_DEFRAG_REQ_MADV_FLAG, + TRANSPARENT_HUGEPAGE_DEFRAG_KHUGEPAGED_FLAG, #ifdef CONFIG_DEBUG_VM TRANSPARENT_HUGEPAGE_DEBUG_COW_FLAG, #endif diff --git a/include/linux/khugepaged.h b/include/linux/khugepaged.h new file mode 100644 index 000000000000..552f3184756c --- /dev/null +++ b/include/linux/khugepaged.h @@ -0,0 +1,66 @@ +#ifndef _LINUX_KHUGEPAGED_H +#define _LINUX_KHUGEPAGED_H + +#include /* MMF_VM_HUGEPAGE */ + +#ifdef CONFIG_TRANSPARENT_HUGEPAGE +extern int __khugepaged_enter(struct mm_struct *mm); +extern void __khugepaged_exit(struct mm_struct *mm); +extern int khugepaged_enter_vma_merge(struct vm_area_struct *vma); + +#define khugepaged_enabled() \ + (transparent_hugepage_flags & \ + ((1<flags)) + return __khugepaged_enter(mm); + return 0; +} + +static inline void khugepaged_exit(struct mm_struct *mm) +{ + if (test_bit(MMF_VM_HUGEPAGE, &mm->flags)) + __khugepaged_exit(mm); +} + +static inline int khugepaged_enter(struct vm_area_struct *vma) +{ + if (!test_bit(MMF_VM_HUGEPAGE, &vma->vm_mm->flags)) + if (khugepaged_always() || + (khugepaged_req_madv() && + vma->vm_flags & VM_HUGEPAGE)) + if (__khugepaged_enter(vma->vm_mm)) + return -ENOMEM; + return 0; +} +#else /* CONFIG_TRANSPARENT_HUGEPAGE */ +static inline int khugepaged_fork(struct mm_struct *mm, struct mm_struct *oldmm) +{ + return 0; +} +static inline void khugepaged_exit(struct mm_struct *mm) +{ +} +static inline int khugepaged_enter(struct vm_area_struct *vma) +{ + return 0; +} +static inline int khugepaged_enter_vma_merge(struct vm_area_struct *vma) +{ + return 0; +} +#endif /* CONFIG_TRANSPARENT_HUGEPAGE */ + +#endif /* _LINUX_KHUGEPAGED_H */ diff --git a/include/linux/sched.h b/include/linux/sched.h index f23b5bb6f52e..d747f948b34e 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -434,6 +434,7 @@ extern int get_dumpable(struct mm_struct *mm); #endif /* leave room for more dump flags */ #define MMF_VM_MERGEABLE 16 /* KSM may merge identical pages */ +#define MMF_VM_HUGEPAGE 17 /* set when VM_HUGEPAGE is set on vma */ #define MMF_INIT_MASK (MMF_DUMPABLE_MASK | MMF_DUMP_FILTER_MASK) -- cgit v1.2.3 From 5f24ce5fd34c3ca1b3d10d30da754732da64d5c0 Mon Sep 17 00:00:00 2001 From: Andrea Arcangeli Date: Thu, 13 Jan 2011 15:47:00 -0800 Subject: thp: remove PG_buddy PG_buddy can be converted to _mapcount == -2. So the PG_compound_lock can be added to page->flags without overflowing (because of the sparse section bits increasing) with CONFIG_X86_PAE=y and CONFIG_X86_PAT=y. This also has to move the memory hotplug code from _mapcount to lru.next to avoid any risk of clashes. We can't use lru.next for PG_buddy removal, but memory hotplug can use lru.next even more easily than the mapcount instead. Signed-off-by: Andrea Arcangeli Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/memory_hotplug.h | 14 +++++++++----- include/linux/mm.h | 21 +++++++++++++++++++++ include/linux/page-flags.h | 7 +------ 3 files changed, 31 insertions(+), 11 deletions(-) (limited to 'include/linux') diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h index 31c237a00c48..24376fe7ee68 100644 --- a/include/linux/memory_hotplug.h +++ b/include/linux/memory_hotplug.h @@ -13,12 +13,16 @@ struct mem_section; #ifdef CONFIG_MEMORY_HOTPLUG /* - * Types for free bootmem. - * The normal smallest mapcount is -1. Here is smaller value than it. + * Types for free bootmem stored in page->lru.next. These have to be in + * some random range in unsigned long space for debugging purposes. */ -#define SECTION_INFO (-1 - 1) -#define MIX_SECTION_INFO (-1 - 2) -#define NODE_INFO (-1 - 3) +enum { + MEMORY_HOTPLUG_MIN_BOOTMEM_TYPE = 12, + SECTION_INFO = MEMORY_HOTPLUG_MIN_BOOTMEM_TYPE, + MIX_SECTION_INFO, + NODE_INFO, + MEMORY_HOTPLUG_MAX_BOOTMEM_TYPE = NODE_INFO, +}; /* * pgdat resizing functions diff --git a/include/linux/mm.h b/include/linux/mm.h index 2ec5138badab..7ab7d2b60041 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -397,6 +397,27 @@ static inline void init_page_count(struct page *page) atomic_set(&page->_count, 1); } +/* + * PageBuddy() indicate that the page is free and in the buddy system + * (see mm/page_alloc.c). + */ +static inline int PageBuddy(struct page *page) +{ + return atomic_read(&page->_mapcount) == -2; +} + +static inline void __SetPageBuddy(struct page *page) +{ + VM_BUG_ON(atomic_read(&page->_mapcount) != -1); + atomic_set(&page->_mapcount, -2); +} + +static inline void __ClearPageBuddy(struct page *page) +{ + VM_BUG_ON(!PageBuddy(page)); + atomic_set(&page->_mapcount, -1); +} + void put_page(struct page *page); void put_pages_list(struct list_head *pages); diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h index 4ca1241ef94e..0db8037e2725 100644 --- a/include/linux/page-flags.h +++ b/include/linux/page-flags.h @@ -48,9 +48,6 @@ * struct page (these bits with information) are always mapped into kernel * address space... * - * PG_buddy is set to indicate that the page is free and in the buddy system - * (see mm/page_alloc.c). - * * PG_hwpoison indicates that a page got corrupted in hardware and contains * data with incorrect ECC bits that triggered a machine check. Accessing is * not safe since it may cause another machine check. Don't touch! @@ -96,7 +93,6 @@ enum pageflags { PG_swapcache, /* Swap page: swp_entry_t in private */ PG_mappedtodisk, /* Has blocks allocated on-disk */ PG_reclaim, /* To be reclaimed asap */ - PG_buddy, /* Page is free, on buddy lists */ PG_swapbacked, /* Page is backed by RAM/swap */ PG_unevictable, /* Page is "unevictable" */ #ifdef CONFIG_MMU @@ -233,7 +229,6 @@ PAGEFLAG(OwnerPriv1, owner_priv_1) TESTCLEARFLAG(OwnerPriv1, owner_priv_1) * risky: they bypass page accounting. */ TESTPAGEFLAG(Writeback, writeback) TESTSCFLAG(Writeback, writeback) -__PAGEFLAG(Buddy, buddy) PAGEFLAG(MappedToDisk, mappedtodisk) /* PG_readahead is only used for file reads; PG_reclaim is only for writes */ @@ -461,7 +456,7 @@ static inline int PageTransCompound(struct page *page) #define PAGE_FLAGS_CHECK_AT_FREE \ (1 << PG_lru | 1 << PG_locked | \ 1 << PG_private | 1 << PG_private_2 | \ - 1 << PG_buddy | 1 << PG_writeback | 1 << PG_reserved | \ + 1 << PG_writeback | 1 << PG_reserved | \ 1 << PG_slab | 1 << PG_swapcache | 1 << PG_active | \ 1 << PG_unevictable | __PG_MLOCKED | __PG_HWPOISON | \ __PG_COMPOUND_LOCK) -- cgit v1.2.3 From f2d6bfe9ff0acec30b713614260e78b03d20e909 Mon Sep 17 00:00:00 2001 From: Johannes Weiner Date: Thu, 13 Jan 2011 15:47:01 -0800 Subject: thp: add x86 32bit support Add support for transparent hugepages to x86 32bit. Share the same VM_ bitflag for VM_MAPPED_COPY. mm/nommu.c will never support transparent hugepages. Signed-off-by: Johannes Weiner Signed-off-by: Andrea Arcangeli Reviewed-by: Rik van Riel Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm.h | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index 7ab7d2b60041..9c2695beab86 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -102,7 +102,11 @@ extern unsigned int kobjsize(const void *objp); #define VM_NORESERVE 0x00200000 /* should the VM suppress accounting */ #define VM_HUGETLB 0x00400000 /* Huge TLB Page VM */ #define VM_NONLINEAR 0x00800000 /* Is non-linear (remap_file_pages) */ +#ifndef CONFIG_TRANSPARENT_HUGEPAGE #define VM_MAPPED_COPY 0x01000000 /* T if mapped copy of data (nommu mmap) */ +#else +#define VM_HUGEPAGE 0x01000000 /* MADV_HUGEPAGE marked this vma */ +#endif #define VM_INSERTPAGE 0x02000000 /* The vma has had "vm_insert_page()" done on it */ #define VM_ALWAYSDUMP 0x04000000 /* Always include in core dumps */ @@ -111,9 +115,6 @@ extern unsigned int kobjsize(const void *objp); #define VM_SAO 0x20000000 /* Strong Access Ordering (powerpc) */ #define VM_PFN_AT_MMAP 0x40000000 /* PFNMAP vma that is fully mapped at mmap time */ #define VM_MERGEABLE 0x80000000 /* KSM may merge identical pages */ -#if BITS_PER_LONG > 32 -#define VM_HUGEPAGE 0x100000000UL /* MADV_HUGEPAGE marked this vma */ -#endif /* Bits set in the VMA until the stack is in its final location */ #define VM_STACK_INCOMPLETE_SETUP (VM_RAND_READ | VM_SEQ_READ) -- cgit v1.2.3 From 0ca1634d4143c3579273ca53b993df19f5c98e92 Mon Sep 17 00:00:00 2001 From: Johannes Weiner Date: Thu, 13 Jan 2011 15:47:02 -0800 Subject: thp: mincore transparent hugepage support Handle transparent huge page pmd entries natively instead of splitting them into subpages. Signed-off-by: Johannes Weiner Signed-off-by: Andrea Arcangeli Reviewed-by: Rik van Riel Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/huge_mm.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h index 43a694ef8904..25125fb6acf7 100644 --- a/include/linux/huge_mm.h +++ b/include/linux/huge_mm.h @@ -19,6 +19,9 @@ extern struct page *follow_trans_huge_pmd(struct mm_struct *mm, extern int zap_huge_pmd(struct mmu_gather *tlb, struct vm_area_struct *vma, pmd_t *pmd); +extern int mincore_huge_pmd(struct vm_area_struct *vma, pmd_t *pmd, + unsigned long addr, unsigned long end, + unsigned char *vec); enum transparent_hugepage_flag { TRANSPARENT_HUGEPAGE_FLAG, -- cgit v1.2.3 From cd7548ab360c462118568eebb8c6da3bc303b02e Mon Sep 17 00:00:00 2001 From: Johannes Weiner Date: Thu, 13 Jan 2011 15:47:04 -0800 Subject: thp: mprotect: transparent huge page support Natively handle huge pmds when changing page tables on behalf of mprotect(). I left out update_mmu_cache() because we do not need it on x86 anyway but more importantly the interface works on ptes, not pmds. Signed-off-by: Johannes Weiner Signed-off-by: Andrea Arcangeli Reviewed-by: Rik van Riel Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/huge_mm.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h index 25125fb6acf7..c590b08c6fa6 100644 --- a/include/linux/huge_mm.h +++ b/include/linux/huge_mm.h @@ -22,6 +22,8 @@ extern int zap_huge_pmd(struct mmu_gather *tlb, extern int mincore_huge_pmd(struct vm_area_struct *vma, pmd_t *pmd, unsigned long addr, unsigned long end, unsigned char *vec); +extern int change_huge_pmd(struct vm_area_struct *vma, pmd_t *pmd, + unsigned long addr, pgprot_t newprot); enum transparent_hugepage_flag { TRANSPARENT_HUGEPAGE_FLAG, -- cgit v1.2.3 From 0bbbc0b33d141f78a0d9218a54a47f50621220d3 Mon Sep 17 00:00:00 2001 From: Andrea Arcangeli Date: Thu, 13 Jan 2011 15:47:05 -0800 Subject: thp: add numa awareness to hugepage allocations It's mostly a matter of replacing alloc_pages with alloc_pages_vma after introducing alloc_pages_vma. khugepaged needs special handling as the allocation has to happen inside collapse_huge_page where the vma is known and an error has to be returned to the outer loop to sleep alloc_sleep_millisecs in case of failure. But it retains the more efficient logic of handling allocation failures in khugepaged in case of CONFIG_NUMA=n. Signed-off-by: Andrea Arcangeli Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/gfp.h | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/gfp.h b/include/linux/gfp.h index d95082cc6f4a..a3b148a91874 100644 --- a/include/linux/gfp.h +++ b/include/linux/gfp.h @@ -331,14 +331,17 @@ alloc_pages(gfp_t gfp_mask, unsigned int order) { return alloc_pages_current(gfp_mask, order); } -extern struct page *alloc_page_vma(gfp_t gfp_mask, +extern struct page *alloc_pages_vma(gfp_t gfp_mask, int order, struct vm_area_struct *vma, unsigned long addr); #else #define alloc_pages(gfp_mask, order) \ alloc_pages_node(numa_node_id(), gfp_mask, order) -#define alloc_page_vma(gfp_mask, vma, addr) alloc_pages(gfp_mask, 0) +#define alloc_pages_vma(gfp_mask, order, vma, addr) \ + alloc_pages(gfp_mask, order) #endif #define alloc_page(gfp_mask) alloc_pages(gfp_mask, 0) +#define alloc_page_vma(gfp_mask, vma, addr) \ + alloc_pages_vma(gfp_mask, 0, vma, addr) extern unsigned long __get_free_pages(gfp_t gfp_mask, unsigned int order); extern unsigned long get_zeroed_page(gfp_t gfp_mask); -- cgit v1.2.3 From 94fcc585fb85ad7b059c70872489b50044d401f3 Mon Sep 17 00:00:00 2001 From: Andrea Arcangeli Date: Thu, 13 Jan 2011 15:47:08 -0800 Subject: thp: avoid breaking huge pmd invariants in case of vma_adjust failures An huge pmd can only be mapped if the corresponding 2M virtual range is fully contained in the vma. At times the VM calls split_vma twice, if the first split_vma succeeds and the second fail, the first split_vma remains in effect and it's not rolled back. For split_vma or vma_adjust to fail an allocation failure is needed so it's a very unlikely event (the out of memory killer would normally fire before any allocation failure is visible to kernel and userland and if an out of memory condition happens it's unlikely to happen exactly here). Nevertheless it's safer to ensure that no huge pmd can be left around if the vma is adjusted in a way that can't fit hugepages anymore at the new vm_start/vm_end address. Signed-off-by: Andrea Arcangeli Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/huge_mm.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'include/linux') diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h index c590b08c6fa6..827595228734 100644 --- a/include/linux/huge_mm.h +++ b/include/linux/huge_mm.h @@ -104,6 +104,19 @@ extern void __split_huge_page_pmd(struct mm_struct *mm, pmd_t *pmd); #error "hugepages can't be allocated by the buddy allocator" #endif extern int hugepage_madvise(unsigned long *vm_flags); +extern void __vma_adjust_trans_huge(struct vm_area_struct *vma, + unsigned long start, + unsigned long end, + long adjust_next); +static inline void vma_adjust_trans_huge(struct vm_area_struct *vma, + unsigned long start, + unsigned long end, + long adjust_next) +{ + if (!vma->anon_vma || vma->vm_ops || vma->vm_file) + return; + __vma_adjust_trans_huge(vma, start, end, adjust_next); +} #else /* CONFIG_TRANSPARENT_HUGEPAGE */ #define HPAGE_PMD_SHIFT ({ BUG(); 0; }) #define HPAGE_PMD_MASK ({ BUG(); 0; }) @@ -125,6 +138,12 @@ static inline int hugepage_madvise(unsigned long *vm_flags) BUG(); return 0; } +static inline void vma_adjust_trans_huge(struct vm_area_struct *vma, + unsigned long start, + unsigned long end, + long adjust_next) +{ +} #endif /* CONFIG_TRANSPARENT_HUGEPAGE */ #endif /* _LINUX_HUGE_MM_H */ -- cgit v1.2.3 From 8ee53820edfd1f3b6554c593f337148dd3d7fc91 Mon Sep 17 00:00:00 2001 From: Andrea Arcangeli Date: Thu, 13 Jan 2011 15:47:10 -0800 Subject: thp: mmu_notifier_test_young For GRU and EPT, we need gup-fast to set referenced bit too (this is why it's correct to return 0 when shadow_access_mask is zero, it requires gup-fast to set the referenced bit). qemu-kvm access already sets the young bit in the pte if it isn't zero-copy, if it's zero copy or a shadow paging EPT minor fault we relay on gup-fast to signal the page is in use... We also need to check the young bits on the secondary pagetables for NPT and not nested shadow mmu as the data may never get accessed again by the primary pte. Without this closer accuracy, we'd have to remove the heuristic that avoids collapsing hugepages in hugepage virtual regions that have not even a single subpage in use. ->test_young is full backwards compatible with GRU and other usages that don't have young bits in pagetables set by the hardware and that should nuke the secondary mmu mappings when ->clear_flush_young runs just like EPT does. Removing the heuristic that checks the young bit in khugepaged/collapse_huge_page completely isn't so bad either probably but I thought it was worth it and this makes it reliable. Signed-off-by: Andrea Arcangeli Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mmu_notifier.h | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mmu_notifier.h b/include/linux/mmu_notifier.h index cbfab1e9957d..cc2e7dfea9d7 100644 --- a/include/linux/mmu_notifier.h +++ b/include/linux/mmu_notifier.h @@ -61,6 +61,16 @@ struct mmu_notifier_ops { struct mm_struct *mm, unsigned long address); + /* + * test_young is called to check the young/accessed bitflag in + * the secondary pte. This is used to know if the page is + * frequently used without actually clearing the flag or tearing + * down the secondary mapping on the page. + */ + int (*test_young)(struct mmu_notifier *mn, + struct mm_struct *mm, + unsigned long address); + /* * change_pte is called in cases that pte mapping to page is changed: * for example, when ksm remaps pte to point to a new shared page. @@ -163,6 +173,8 @@ extern void __mmu_notifier_mm_destroy(struct mm_struct *mm); extern void __mmu_notifier_release(struct mm_struct *mm); extern int __mmu_notifier_clear_flush_young(struct mm_struct *mm, unsigned long address); +extern int __mmu_notifier_test_young(struct mm_struct *mm, + unsigned long address); extern void __mmu_notifier_change_pte(struct mm_struct *mm, unsigned long address, pte_t pte); extern void __mmu_notifier_invalidate_page(struct mm_struct *mm, @@ -186,6 +198,14 @@ static inline int mmu_notifier_clear_flush_young(struct mm_struct *mm, return 0; } +static inline int mmu_notifier_test_young(struct mm_struct *mm, + unsigned long address) +{ + if (mm_has_notifiers(mm)) + return __mmu_notifier_test_young(mm, address); + return 0; +} + static inline void mmu_notifier_change_pte(struct mm_struct *mm, unsigned long address, pte_t pte) { @@ -313,6 +333,12 @@ static inline int mmu_notifier_clear_flush_young(struct mm_struct *mm, return 0; } +static inline int mmu_notifier_test_young(struct mm_struct *mm, + unsigned long address) +{ + return 0; +} + static inline void mmu_notifier_change_pte(struct mm_struct *mm, unsigned long address, pte_t pte) { -- cgit v1.2.3 From 5a03b051ed87e72b959f32a86054e1142ac4cf55 Mon Sep 17 00:00:00 2001 From: Andrea Arcangeli Date: Thu, 13 Jan 2011 15:47:11 -0800 Subject: thp: use compaction in kswapd for GFP_ATOMIC order > 0 This takes advantage of memory compaction to properly generate pages of order > 0 if regular page reclaim fails and priority level becomes more severe and we don't reach the proper watermarks. Signed-off-by: Andrea Arcangeli Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/compaction.h | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/compaction.h b/include/linux/compaction.h index 72cba4034785..dfa2ed4c0d26 100644 --- a/include/linux/compaction.h +++ b/include/linux/compaction.h @@ -11,6 +11,9 @@ /* The full zone was compacted */ #define COMPACT_COMPLETE 3 +#define COMPACT_MODE_DIRECT_RECLAIM 0 +#define COMPACT_MODE_KSWAPD 1 + #ifdef CONFIG_COMPACTION extern int sysctl_compact_memory; extern int sysctl_compaction_handler(struct ctl_table *table, int write, @@ -25,7 +28,8 @@ extern unsigned long try_to_compact_pages(struct zonelist *zonelist, bool sync); extern unsigned long compaction_suitable(struct zone *zone, int order); extern unsigned long compact_zone_order(struct zone *zone, int order, - gfp_t gfp_mask, bool sync); + gfp_t gfp_mask, bool sync, + int compact_mode); /* Do not skip compaction more than 64 times */ #define COMPACT_MAX_DEFER_SHIFT 6 @@ -70,9 +74,10 @@ static inline unsigned long compaction_suitable(struct zone *zone, int order) } static inline unsigned long compact_zone_order(struct zone *zone, int order, - gfp_t gfp_mask, bool sync) + gfp_t gfp_mask, bool sync, + int compact_mode) { - return 0; + return COMPACT_CONTINUE; } static inline void defer_compaction(struct zone *zone) -- cgit v1.2.3 From 2c888cfbc1b45508a44763d85ba2e8ac43faff5f Mon Sep 17 00:00:00 2001 From: Rik van Riel Date: Thu, 13 Jan 2011 15:47:13 -0800 Subject: thp: fix anon memory statistics with transparent hugepages Count each transparent hugepage as HPAGE_PMD_NR pages in the LRU statistics, so the Active(anon) and Inactive(anon) statistics in /proc/meminfo are correct. Signed-off-by: Rik van Riel Signed-off-by: Andrea Arcangeli Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/huge_mm.h | 8 ++++++++ include/linux/mm_inline.h | 8 +++++--- 2 files changed, 13 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h index 827595228734..9b48c24df260 100644 --- a/include/linux/huge_mm.h +++ b/include/linux/huge_mm.h @@ -117,11 +117,19 @@ static inline void vma_adjust_trans_huge(struct vm_area_struct *vma, return; __vma_adjust_trans_huge(vma, start, end, adjust_next); } +static inline int hpage_nr_pages(struct page *page) +{ + if (unlikely(PageTransHuge(page))) + return HPAGE_PMD_NR; + return 1; +} #else /* CONFIG_TRANSPARENT_HUGEPAGE */ #define HPAGE_PMD_SHIFT ({ BUG(); 0; }) #define HPAGE_PMD_MASK ({ BUG(); 0; }) #define HPAGE_PMD_SIZE ({ BUG(); 0; }) +#define hpage_nr_pages(x) 1 + #define transparent_hugepage_enabled(__vma) 0 #define transparent_hugepage_flags 0UL diff --git a/include/linux/mm_inline.h b/include/linux/mm_inline.h index 650f31eabdb1..8f7d24712dc1 100644 --- a/include/linux/mm_inline.h +++ b/include/linux/mm_inline.h @@ -1,6 +1,8 @@ #ifndef LINUX_MM_INLINE_H #define LINUX_MM_INLINE_H +#include + /** * page_is_file_cache - should the page be on a file LRU or anon LRU? * @page: the page to test @@ -24,7 +26,7 @@ __add_page_to_lru_list(struct zone *zone, struct page *page, enum lru_list l, struct list_head *head) { list_add(&page->lru, head); - __inc_zone_state(zone, NR_LRU_BASE + l); + __mod_zone_page_state(zone, NR_LRU_BASE + l, hpage_nr_pages(page)); mem_cgroup_add_lru_list(page, l); } @@ -38,7 +40,7 @@ static inline void del_page_from_lru_list(struct zone *zone, struct page *page, enum lru_list l) { list_del(&page->lru); - __dec_zone_state(zone, NR_LRU_BASE + l); + __mod_zone_page_state(zone, NR_LRU_BASE + l, -hpage_nr_pages(page)); mem_cgroup_del_lru_list(page, l); } @@ -73,7 +75,7 @@ del_page_from_lru(struct zone *zone, struct page *page) l += LRU_ACTIVE; } } - __dec_zone_state(zone, NR_LRU_BASE + l); + __mod_zone_page_state(zone, NR_LRU_BASE + l, -hpage_nr_pages(page)); mem_cgroup_del_lru_list(page, l); } -- cgit v1.2.3 From 37c2ac7872a9387542616f658d20ac25f5bdb32e Mon Sep 17 00:00:00 2001 From: Andrea Arcangeli Date: Thu, 13 Jan 2011 15:47:16 -0800 Subject: thp: compound_trans_order Read compound_trans_order safe. Noop for CONFIG_TRANSPARENT_HUGEPAGE=n. Signed-off-by: Andrea Arcangeli Cc: Daisuke Nishimura Cc: KAMEZAWA Hiroyuki Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index 9c2695beab86..ce97a2bb0b19 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -450,6 +450,20 @@ static inline int compound_order(struct page *page) return (unsigned long)page[1].lru.prev; } +static inline int compound_trans_order(struct page *page) +{ + int order; + unsigned long flags; + + if (!PageHead(page)) + return 0; + + flags = compound_lock_irqsave(page); + order = compound_order(page); + compound_unlock_irqrestore(page, flags); + return order; +} + static inline void set_compound_order(struct page *page, unsigned long order) { page[1].lru.prev = (void *)order; -- cgit v1.2.3 From a664b2d8555c659127bf8fe049a58449d394a707 Mon Sep 17 00:00:00 2001 From: Andrea Arcangeli Date: Thu, 13 Jan 2011 15:47:17 -0800 Subject: thp: madvise(MADV_NOHUGEPAGE) Add madvise MADV_NOHUGEPAGE to mark regions that are not important to be hugepage backed. Return -EINVAL if the vma is not of an anonymous type, or the feature isn't built into the kernel. Never silently return success. Signed-off-by: Andrea Arcangeli Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/huge_mm.h | 14 ++++++++------ include/linux/khugepaged.h | 7 ++++--- include/linux/mm.h | 1 + 3 files changed, 13 insertions(+), 9 deletions(-) (limited to 'include/linux') diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h index 9b48c24df260..a8b7e42d19ec 100644 --- a/include/linux/huge_mm.h +++ b/include/linux/huge_mm.h @@ -52,10 +52,12 @@ extern pmd_t *page_check_address_pmd(struct page *page, #define HPAGE_PMD_SIZE HPAGE_SIZE #define transparent_hugepage_enabled(__vma) \ - (transparent_hugepage_flags & (1<vm_flags & VM_HUGEPAGE)) + ((transparent_hugepage_flags & \ + (1<vm_flags & VM_HUGEPAGE))) && \ + !((__vma)->vm_flags & VM_NOHUGEPAGE)) #define transparent_hugepage_defrag(__vma) \ ((transparent_hugepage_flags & \ (1< MAX_ORDER #error "hugepages can't be allocated by the buddy allocator" #endif -extern int hugepage_madvise(unsigned long *vm_flags); +extern int hugepage_madvise(unsigned long *vm_flags, int advice); extern void __vma_adjust_trans_huge(struct vm_area_struct *vma, unsigned long start, unsigned long end, @@ -141,7 +143,7 @@ static inline int split_huge_page(struct page *page) do { } while (0) #define wait_split_huge_page(__anon_vma, __pmd) \ do { } while (0) -static inline int hugepage_madvise(unsigned long *vm_flags) +static inline int hugepage_madvise(unsigned long *vm_flags, int advice) { BUG(); return 0; diff --git a/include/linux/khugepaged.h b/include/linux/khugepaged.h index 552f3184756c..6b394f0b5148 100644 --- a/include/linux/khugepaged.h +++ b/include/linux/khugepaged.h @@ -38,9 +38,10 @@ static inline void khugepaged_exit(struct mm_struct *mm) static inline int khugepaged_enter(struct vm_area_struct *vma) { if (!test_bit(MMF_VM_HUGEPAGE, &vma->vm_mm->flags)) - if (khugepaged_always() || - (khugepaged_req_madv() && - vma->vm_flags & VM_HUGEPAGE)) + if ((khugepaged_always() || + (khugepaged_req_madv() && + vma->vm_flags & VM_HUGEPAGE)) && + !(vma->vm_flags & VM_NOHUGEPAGE)) if (__khugepaged_enter(vma->vm_mm)) return -ENOMEM; return 0; diff --git a/include/linux/mm.h b/include/linux/mm.h index ce97a2bb0b19..956a35532f47 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -83,6 +83,7 @@ extern unsigned int kobjsize(const void *objp); #define VM_GROWSUP 0x00000200 #else #define VM_GROWSUP 0x00000000 +#define VM_NOHUGEPAGE 0x00000200 /* MADV_NOHUGEPAGE marked this vma */ #endif #define VM_PFNMAP 0x00000400 /* Page-ranges managed without "struct page", just pure PFN */ #define VM_DENYWRITE 0x00000800 /* ETXTBSY on write attempts.. */ -- cgit v1.2.3 From 60ab3244ec85c44276c585a2a20d3750402e1cf4 Mon Sep 17 00:00:00 2001 From: Andrea Arcangeli Date: Thu, 13 Jan 2011 15:47:18 -0800 Subject: thp: khugepaged: make khugepaged aware about madvise MADV_HUGEPAGE and MADV_NOHUGEPAGE were fully effective only if run after mmap and before touching the memory. While this is enough for most usages, it's little effort to make madvise more dynamic at runtime on an existing mapping by making khugepaged aware about madvise. MADV_HUGEPAGE: register in khugepaged immediately without waiting a page fault (that may not ever happen if all pages are already mapped and the "enabled" knob was set to madvise during the initial page faults). MADV_NOHUGEPAGE: skip vmas marked VM_NOHUGEPAGE in khugepaged to stop collapsing pages where not needed. [akpm@linux-foundation.org: tweak comment] Signed-off-by: Andrea Arcangeli Cc: Michael Kerrisk Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/huge_mm.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h index a8b7e42d19ec..bddfba1d7b85 100644 --- a/include/linux/huge_mm.h +++ b/include/linux/huge_mm.h @@ -105,7 +105,8 @@ extern void __split_huge_page_pmd(struct mm_struct *mm, pmd_t *pmd); #if HPAGE_PMD_ORDER > MAX_ORDER #error "hugepages can't be allocated by the buddy allocator" #endif -extern int hugepage_madvise(unsigned long *vm_flags, int advice); +extern int hugepage_madvise(struct vm_area_struct *vma, + unsigned long *vm_flags, int advice); extern void __vma_adjust_trans_huge(struct vm_area_struct *vma, unsigned long start, unsigned long end, @@ -143,7 +144,8 @@ static inline int split_huge_page(struct page *page) do { } while (0) #define wait_split_huge_page(__anon_vma, __pmd) \ do { } while (0) -static inline int hugepage_madvise(unsigned long *vm_flags, int advice) +static inline int hugepage_madvise(struct vm_area_struct *vma, + unsigned long *vm_flags, int advice) { BUG(); return 0; -- cgit v1.2.3 From 22e5c47ee238abe636655c3862ed28d6eb084ad4 Mon Sep 17 00:00:00 2001 From: Andrea Arcangeli Date: Thu, 13 Jan 2011 15:47:20 -0800 Subject: thp: add compound_trans_head() helper Cleanup some code with common compound_trans_head helper. Signed-off-by: Andrea Arcangeli Cc: Hugh Dickins Cc: Johannes Weiner Cc: Marcelo Tosatti Cc: Avi Kivity Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/huge_mm.h | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'include/linux') diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h index bddfba1d7b85..8e6c8c42bc3c 100644 --- a/include/linux/huge_mm.h +++ b/include/linux/huge_mm.h @@ -126,6 +126,23 @@ static inline int hpage_nr_pages(struct page *page) return HPAGE_PMD_NR; return 1; } +static inline struct page *compound_trans_head(struct page *page) +{ + if (PageTail(page)) { + struct page *head; + head = page->first_page; + smp_rmb(); + /* + * head may be a dangling pointer. + * __split_huge_page_refcount clears PageTail before + * overwriting first_page, so if PageTail is still + * there it means the head pointer isn't dangling. + */ + if (PageTail(page)) + return head; + } + return page; +} #else /* CONFIG_TRANSPARENT_HUGEPAGE */ #define HPAGE_PMD_SHIFT ({ BUG(); 0; }) #define HPAGE_PMD_MASK ({ BUG(); 0; }) @@ -144,6 +161,7 @@ static inline int split_huge_page(struct page *page) do { } while (0) #define wait_split_huge_page(__anon_vma, __pmd) \ do { } while (0) +#define compound_trans_head(page) compound_head(page) static inline int hugepage_madvise(struct vm_area_struct *vma, unsigned long *vm_flags, int advice) { -- cgit v1.2.3 From 29c1f677d424e8c5683a837fc4f03fc9f19201d7 Mon Sep 17 00:00:00 2001 From: Mel Gorman Date: Thu, 13 Jan 2011 15:47:21 -0800 Subject: mm: migration: use rcu_dereference_protected when dereferencing the radix tree slot during file page migration migrate_pages() -> unmap_and_move() only calls rcu_read_lock() for anonymous pages, as introduced by git commit 989f89c57e6361e7d16fbd9572b5da7d313b073d ("fix rcu_read_lock() in page migraton"). The point of the RCU protection there is part of getting a stable reference to anon_vma and is only held for anon pages as file pages are locked which is sufficient protection against freeing. However, while a file page's mapping is being migrated, the radix tree is double checked to ensure it is the expected page. This uses radix_tree_deref_slot() -> rcu_dereference() without the RCU lock held triggering the following warning. [ 173.674290] =================================================== [ 173.676016] [ INFO: suspicious rcu_dereference_check() usage. ] [ 173.676016] --------------------------------------------------- [ 173.676016] include/linux/radix-tree.h:145 invoked rcu_dereference_check() without protection! [ 173.676016] [ 173.676016] other info that might help us debug this: [ 173.676016] [ 173.676016] [ 173.676016] rcu_scheduler_active = 1, debug_locks = 0 [ 173.676016] 1 lock held by hugeadm/2899: [ 173.676016] #0: (&(&inode->i_data.tree_lock)->rlock){..-.-.}, at: [] migrate_page_move_mapping+0x40/0x1ab [ 173.676016] [ 173.676016] stack backtrace: [ 173.676016] Pid: 2899, comm: hugeadm Not tainted 2.6.37-rc5-autobuild [ 173.676016] Call Trace: [ 173.676016] [] ? printk+0x14/0x1b [ 173.676016] [] lockdep_rcu_dereference+0x7d/0x86 [ 173.676016] [] migrate_page_move_mapping+0xca/0x1ab [ 173.676016] [] migrate_page+0x23/0x39 [ 173.676016] [] buffer_migrate_page+0x22/0x107 [ 173.676016] [] ? buffer_migrate_page+0x0/0x107 [ 173.676016] [] move_to_new_page+0x9a/0x1ae [ 173.676016] [] migrate_pages+0x1e7/0x2fa This patch introduces radix_tree_deref_slot_protected() which calls rcu_dereference_protected(). Users of it must pass in the mapping->tree_lock that is protecting this dereference. Holding the tree lock protects against parallel updaters of the radix tree meaning that rcu_dereference_protected is allowable. [akpm@linux-foundation.org: remove unneeded casts] Signed-off-by: Mel Gorman Cc: Minchan Kim Cc: KAMEZAWA Hiroyuki Cc: Milton Miller Cc: Nick Piggin Cc: Wu Fengguang Cc: [2.6.37.early] Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/radix-tree.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'include/linux') diff --git a/include/linux/radix-tree.h b/include/linux/radix-tree.h index ab2baa5c4884..23241c2fecce 100644 --- a/include/linux/radix-tree.h +++ b/include/linux/radix-tree.h @@ -145,6 +145,22 @@ static inline void *radix_tree_deref_slot(void **pslot) return rcu_dereference(*pslot); } +/** + * radix_tree_deref_slot_protected - dereference a slot without RCU lock but with tree lock held + * @pslot: pointer to slot, returned by radix_tree_lookup_slot + * Returns: item that was stored in that slot with any direct pointer flag + * removed. + * + * Similar to radix_tree_deref_slot but only used during migration when a pages + * mapping is being moved. The caller does not hold the RCU read lock but it + * must hold the tree lock to prevent parallel updates. + */ +static inline void *radix_tree_deref_slot_protected(void **pslot, + spinlock_t *treelock) +{ + return rcu_dereference_protected(*pslot, lockdep_is_held(treelock)); +} + /** * radix_tree_deref_retry - check radix_tree_deref_slot * @arg: pointer returned by radix_tree_deref_slot -- cgit v1.2.3 From db16d5ec1f87f17511599bc77857dd1662b5a22f Mon Sep 17 00:00:00 2001 From: Greg Thelen Date: Thu, 13 Jan 2011 15:47:35 -0800 Subject: memcg: add page_cgroup flags for dirty page tracking This patchset provides the ability for each cgroup to have independent dirty page limits. Limiting dirty memory is like fixing the max amount of dirty (hard to reclaim) page cache used by a cgroup. So, in case of multiple cgroup writers, they will not be able to consume more than their designated share of dirty pages and will be forced to perform write-out if they cross that limit. The patches are based on a series proposed by Andrea Righi in Mar 2010. Overview: - Add page_cgroup flags to record when pages are dirty, in writeback, or nfs unstable. - Extend mem_cgroup to record the total number of pages in each of the interesting dirty states (dirty, writeback, unstable_nfs). - Add dirty parameters similar to the system-wide /proc/sys/vm/dirty_* limits to mem_cgroup. The mem_cgroup dirty parameters are accessible via cgroupfs control files. - Consider both system and per-memcg dirty limits in page writeback when deciding to queue background writeback or block for foreground writeback. Known shortcomings: - When a cgroup dirty limit is exceeded, then bdi writeback is employed to writeback dirty inodes. Bdi writeback considers inodes from any cgroup, not just inodes contributing dirty pages to the cgroup exceeding its limit. - When memory.use_hierarchy is set, then dirty limits are disabled. This is a implementation detail. An enhanced implementation is needed to check the chain of parents to ensure that no dirty limit is exceeded. Performance data: - A page fault microbenchmark workload was used to measure performance, which can be called in read or write mode: f = open(foo. $cpu) truncate(f, 4096) alarm(60) while (1) { p = mmap(f, 4096) if (write) *p = 1 else x = *p munmap(p) } - The workload was called for several points in the patch series in different modes: - s_read is a single threaded reader - s_write is a single threaded writer - p_read is a 16 thread reader, each operating on a different file - p_write is a 16 thread writer, each operating on a different file - Measurements were collected on a 16 core non-numa system using "perf stat --repeat 3". The -a option was used for parallel (p_*) runs. - All numbers are page fault rate (M/sec). Higher is better. - To compare the performance of a kernel without non-memcg compare the first and last rows, neither has memcg configured. The first row does not include any of these memcg patches. - To compare the performance of using memcg dirty limits, compare the baseline (2nd row titled "w/ memcg") with the the code and memcg enabled (2nd to last row titled "all patches"). root_cgroup child_cgroup s_read s_write p_read p_write s_read s_write p_read p_write mmotm w/o memcg 0.428 0.390 0.429 0.388 mmotm w/ memcg 0.411 0.378 0.391 0.362 0.412 0.377 0.385 0.363 all patches 0.384 0.360 0.370 0.348 0.381 0.363 0.368 0.347 all patches 0.431 0.402 0.427 0.395 w/o memcg This patch: Add additional flags to page_cgroup to track dirty pages within a mem_cgroup. Signed-off-by: KAMEZAWA Hiroyuki Signed-off-by: Andrea Righi Signed-off-by: Greg Thelen Acked-by: Daisuke Nishimura Cc: Balbir Singh Cc: Minchan Kim Cc: Wu Fengguang Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/page_cgroup.h | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) (limited to 'include/linux') diff --git a/include/linux/page_cgroup.h b/include/linux/page_cgroup.h index b02195dfc1b0..fdb5a92b5ac7 100644 --- a/include/linux/page_cgroup.h +++ b/include/linux/page_cgroup.h @@ -40,6 +40,9 @@ enum { PCG_USED, /* this object is in use. */ PCG_ACCT_LRU, /* page has been accounted for */ PCG_FILE_MAPPED, /* page is accounted as "mapped" */ + PCG_FILE_DIRTY, /* page is dirty */ + PCG_FILE_WRITEBACK, /* page is under writeback */ + PCG_FILE_UNSTABLE_NFS, /* page is NFS unstable */ PCG_MIGRATION, /* under page migration */ }; @@ -59,6 +62,10 @@ static inline void ClearPageCgroup##uname(struct page_cgroup *pc) \ static inline int TestClearPageCgroup##uname(struct page_cgroup *pc) \ { return test_and_clear_bit(PCG_##lname, &pc->flags); } +#define TESTSETPCGFLAG(uname, lname) \ +static inline int TestSetPageCgroup##uname(struct page_cgroup *pc) \ + { return test_and_set_bit(PCG_##lname, &pc->flags); } + /* Cache flag is set only once (at allocation) */ TESTPCGFLAG(Cache, CACHE) CLEARPCGFLAG(Cache, CACHE) @@ -78,6 +85,22 @@ SETPCGFLAG(FileMapped, FILE_MAPPED) CLEARPCGFLAG(FileMapped, FILE_MAPPED) TESTPCGFLAG(FileMapped, FILE_MAPPED) +SETPCGFLAG(FileDirty, FILE_DIRTY) +CLEARPCGFLAG(FileDirty, FILE_DIRTY) +TESTPCGFLAG(FileDirty, FILE_DIRTY) +TESTCLEARPCGFLAG(FileDirty, FILE_DIRTY) +TESTSETPCGFLAG(FileDirty, FILE_DIRTY) + +SETPCGFLAG(FileWriteback, FILE_WRITEBACK) +CLEARPCGFLAG(FileWriteback, FILE_WRITEBACK) +TESTPCGFLAG(FileWriteback, FILE_WRITEBACK) + +SETPCGFLAG(FileUnstableNFS, FILE_UNSTABLE_NFS) +CLEARPCGFLAG(FileUnstableNFS, FILE_UNSTABLE_NFS) +TESTPCGFLAG(FileUnstableNFS, FILE_UNSTABLE_NFS) +TESTCLEARPCGFLAG(FileUnstableNFS, FILE_UNSTABLE_NFS) +TESTSETPCGFLAG(FileUnstableNFS, FILE_UNSTABLE_NFS) + SETPCGFLAG(Migration, MIGRATION) CLEARPCGFLAG(Migration, MIGRATION) TESTPCGFLAG(Migration, MIGRATION) -- cgit v1.2.3 From 2a7106f2cb0768d00fe8c1eb42a754a7d8518f08 Mon Sep 17 00:00:00 2001 From: Greg Thelen Date: Thu, 13 Jan 2011 15:47:37 -0800 Subject: memcg: create extensible page stat update routines Replace usage of the mem_cgroup_update_file_mapped() memcg statistic update routine with two new routines: * mem_cgroup_inc_page_stat() * mem_cgroup_dec_page_stat() As before, only the file_mapped statistic is managed. However, these more general interfaces allow for new statistics to be more easily added. New statistics are added with memcg dirty page accounting. Signed-off-by: Greg Thelen Signed-off-by: Andrea Righi Acked-by: KAMEZAWA Hiroyuki Acked-by: Daisuke Nishimura Cc: Balbir Singh Cc: Minchan Kim Cc: Wu Fengguang Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/memcontrol.h | 31 ++++++++++++++++++++++++++++--- 1 file changed, 28 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 159a0762aeaf..067115ce6b3e 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -25,6 +25,11 @@ struct page_cgroup; struct page; struct mm_struct; +/* Stats that can be updated by kernel. */ +enum mem_cgroup_page_stat_item { + MEMCG_NR_FILE_MAPPED, /* # of pages charged as file rss */ +}; + extern unsigned long mem_cgroup_isolate_pages(unsigned long nr_to_scan, struct list_head *dst, unsigned long *scanned, int order, @@ -121,7 +126,22 @@ static inline bool mem_cgroup_disabled(void) return false; } -void mem_cgroup_update_file_mapped(struct page *page, int val); +void mem_cgroup_update_page_stat(struct page *page, + enum mem_cgroup_page_stat_item idx, + int val); + +static inline void mem_cgroup_inc_page_stat(struct page *page, + enum mem_cgroup_page_stat_item idx) +{ + mem_cgroup_update_page_stat(page, idx, 1); +} + +static inline void mem_cgroup_dec_page_stat(struct page *page, + enum mem_cgroup_page_stat_item idx) +{ + mem_cgroup_update_page_stat(page, idx, -1); +} + unsigned long mem_cgroup_soft_limit_reclaim(struct zone *zone, int order, gfp_t gfp_mask); u64 mem_cgroup_get_limit(struct mem_cgroup *mem); @@ -293,8 +313,13 @@ mem_cgroup_print_oom_info(struct mem_cgroup *memcg, struct task_struct *p) { } -static inline void mem_cgroup_update_file_mapped(struct page *page, - int val) +static inline void mem_cgroup_inc_page_stat(struct page *page, + enum mem_cgroup_page_stat_item idx) +{ +} + +static inline void mem_cgroup_dec_page_stat(struct page *page, + enum mem_cgroup_page_stat_item idx) { } -- cgit v1.2.3 From dbd4ea78f002df283c95d9774837041735fa1bf9 Mon Sep 17 00:00:00 2001 From: KAMEZAWA Hiroyuki Date: Thu, 13 Jan 2011 15:47:38 -0800 Subject: memcg: add lock to synchronize page accounting and migration Introduce a new bit spin lock, PCG_MOVE_LOCK, to synchronize the page accounting and migration code. This reworks the locking scheme of _update_stat() and _move_account() by adding new lock bit PCG_MOVE_LOCK, which is always taken under IRQ disable. 1. If pages are being migrated from a memcg, then updates to that memcg page statistics are protected by grabbing PCG_MOVE_LOCK using move_lock_page_cgroup(). In an upcoming commit, memcg dirty page accounting will be updating memcg page accounting (specifically: num writeback pages) from IRQ context (softirq). Avoid a deadlocking nested spin lock attempt by disabling irq on the local processor when grabbing the PCG_MOVE_LOCK. 2. lock for update_page_stat is used only for avoiding race with move_account(). So, IRQ awareness of lock_page_cgroup() itself is not a problem. The problem is between mem_cgroup_update_page_stat() and mem_cgroup_move_account_page(). Trade-off: * Changing lock_page_cgroup() to always disable IRQ (or local_bh) has some impacts on performance and I think it's bad to disable IRQ when it's not necessary. * adding a new lock makes move_account() slower. Score is here. Performance Impact: moving a 8G anon process. Before: real 0m0.792s user 0m0.000s sys 0m0.780s After: real 0m0.854s user 0m0.000s sys 0m0.842s This score is bad but planned patches for optimization can reduce this impact. Signed-off-by: KAMEZAWA Hiroyuki Signed-off-by: Greg Thelen Reviewed-by: Minchan Kim Acked-by: Daisuke Nishimura Cc: Andrea Righi Cc: Balbir Singh Cc: Wu Fengguang Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/page_cgroup.h | 31 ++++++++++++++++++++++++++++--- 1 file changed, 28 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/page_cgroup.h b/include/linux/page_cgroup.h index fdb5a92b5ac7..5b0c971d7cae 100644 --- a/include/linux/page_cgroup.h +++ b/include/linux/page_cgroup.h @@ -35,15 +35,18 @@ struct page_cgroup *lookup_page_cgroup(struct page *page); enum { /* flags for mem_cgroup */ - PCG_LOCK, /* page cgroup is locked */ + PCG_LOCK, /* Lock for pc->mem_cgroup and following bits. */ PCG_CACHE, /* charged as cache */ PCG_USED, /* this object is in use. */ - PCG_ACCT_LRU, /* page has been accounted for */ + PCG_MIGRATION, /* under page migration */ + /* flags for mem_cgroup and file and I/O status */ + PCG_MOVE_LOCK, /* For race between move_account v.s. following bits */ PCG_FILE_MAPPED, /* page is accounted as "mapped" */ PCG_FILE_DIRTY, /* page is dirty */ PCG_FILE_WRITEBACK, /* page is under writeback */ PCG_FILE_UNSTABLE_NFS, /* page is NFS unstable */ - PCG_MIGRATION, /* under page migration */ + /* No lock in page_cgroup */ + PCG_ACCT_LRU, /* page has been accounted for (under lru_lock) */ }; #define TESTPCGFLAG(uname, lname) \ @@ -117,6 +120,10 @@ static inline enum zone_type page_cgroup_zid(struct page_cgroup *pc) static inline void lock_page_cgroup(struct page_cgroup *pc) { + /* + * Don't take this lock in IRQ context. + * This lock is for pc->mem_cgroup, USED, CACHE, MIGRATION + */ bit_spin_lock(PCG_LOCK, &pc->flags); } @@ -130,6 +137,24 @@ static inline int page_is_cgroup_locked(struct page_cgroup *pc) return bit_spin_is_locked(PCG_LOCK, &pc->flags); } +static inline void move_lock_page_cgroup(struct page_cgroup *pc, + unsigned long *flags) +{ + /* + * We know updates to pc->flags of page cache's stats are from both of + * usual context or IRQ context. Disable IRQ to avoid deadlock. + */ + local_irq_save(*flags); + bit_spin_lock(PCG_MOVE_LOCK, &pc->flags); +} + +static inline void move_unlock_page_cgroup(struct page_cgroup *pc, + unsigned long *flags) +{ + bit_spin_unlock(PCG_MOVE_LOCK, &pc->flags); + local_irq_restore(*flags); +} + #else /* CONFIG_CGROUP_MEM_RES_CTLR */ struct page_cgroup; -- cgit v1.2.3 From 50de1dd967d4ba3b8a90ebe7a4f5feca24191317 Mon Sep 17 00:00:00 2001 From: Daisuke Nishimura Date: Thu, 13 Jan 2011 15:47:43 -0800 Subject: memcg: fix memory migration of shmem swapcache In the current implementation mem_cgroup_end_migration() decides whether the page migration has succeeded or not by checking "oldpage->mapping". But if we are tring to migrate a shmem swapcache, the page->mapping of it is NULL from the begining, so the check would be invalid. As a result, mem_cgroup_end_migration() assumes the migration has succeeded even if it's not, so "newpage" would be freed while it's not uncharged. This patch fixes it by passing mem_cgroup_end_migration() the result of the page migration. Signed-off-by: Daisuke Nishimura Reviewed-by: Minchan Kim Acked-by: KAMEZAWA Hiroyuki Acked-by: Balbir Singh Cc: Minchan Kim Reviewed-by: Johannes Weiner Cc: Hugh Dickins Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/memcontrol.h | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 067115ce6b3e..6a576f989437 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -98,7 +98,7 @@ extern int mem_cgroup_prepare_migration(struct page *page, struct page *newpage, struct mem_cgroup **ptr); extern void mem_cgroup_end_migration(struct mem_cgroup *mem, - struct page *oldpage, struct page *newpage); + struct page *oldpage, struct page *newpage, bool migration_ok); /* * For memory reclaim. @@ -251,8 +251,7 @@ mem_cgroup_prepare_migration(struct page *page, struct page *newpage, } static inline void mem_cgroup_end_migration(struct mem_cgroup *mem, - struct page *oldpage, - struct page *newpage) + struct page *oldpage, struct page *newpage, bool migration_ok) { } -- cgit v1.2.3 From 9ce137eee4febaabca81143be07d4205d2bd52d4 Mon Sep 17 00:00:00 2001 From: "J. Bruce Fields" Date: Tue, 11 Jan 2011 14:07:12 -0500 Subject: nfsd: don't support msnfs export option We've long had these pointless #ifdef MSNFS's sprinkled throughout the code--pointless because MSNFS is always defined (and we give no config option to make that easy to change). So we could just remove the ifdef's and compile the resulting code unconditionally. But as long as we're there: why not just rip out this code entirely? The only purpose is to implement the "msnfs" export option which turns on Windows-like behavior in some cases, and: - the export option isn't documented anywhere; - the userland utilities (which would need to be able to parse "msnfs" in an export file) don't support it; - I don't know how to maintain this, as I don't know what the proper behavior is; and - google shows no evidence that anyone has ever used this. Signed-off-by: J. Bruce Fields --- include/linux/nfsd/export.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/nfsd/export.h b/include/linux/nfsd/export.h index 8ae78a61eea4..bd316159278c 100644 --- a/include/linux/nfsd/export.h +++ b/include/linux/nfsd/export.h @@ -35,7 +35,7 @@ #define NFSEXP_NOHIDE 0x0200 #define NFSEXP_NOSUBTREECHECK 0x0400 #define NFSEXP_NOAUTHNLM 0x0800 /* Don't authenticate NLM requests - just trust */ -#define NFSEXP_MSNFS 0x1000 /* do silly things that MS clients expect */ +#define NFSEXP_MSNFS 0x1000 /* do silly things that MS clients expect; no longer supported */ #define NFSEXP_FSID 0x2000 #define NFSEXP_CROSSMOUNT 0x4000 #define NFSEXP_NOACL 0x8000 /* reserved for possible ACL related use */ -- cgit v1.2.3 From 2c6755988afc003a0332406a134fb6a1626f9b28 Mon Sep 17 00:00:00 2001 From: Nick Piggin Date: Fri, 14 Jan 2011 02:36:43 +0000 Subject: fs: hlist UP debug fixup Po-Yu Chuang noticed that hlist_bl_set_first could crash on a UP system when LIST_BL_LOCKMASK is 0, because LIST_BL_BUG_ON(!((unsigned long)h->first & LIST_BL_LOCKMASK)); always evaulates to true. Fix the expression, and also avoid a dependency between bit spinlock implementation and list bl code (list code shouldn't know anything except that bit 0 is set when adding and removing elements). Eventually if a good use case comes up, we might use this list to store 1 or more arbitrary bits of data, so it really shouldn't be tied to locking either, but for now they are helpful for debugging. Signed-off-by: Nick Piggin --- include/linux/list_bl.h | 5 +++-- include/linux/rculist_bl.h | 3 ++- 2 files changed, 5 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/list_bl.h b/include/linux/list_bl.h index 9ee97e7f2be4..b2adbb4b2f73 100644 --- a/include/linux/list_bl.h +++ b/include/linux/list_bl.h @@ -16,7 +16,7 @@ * some fast and compact auxiliary data. */ -#if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK) +#if defined(CONFIG_SMP) #define LIST_BL_LOCKMASK 1UL #else #define LIST_BL_LOCKMASK 0UL @@ -62,7 +62,8 @@ static inline void hlist_bl_set_first(struct hlist_bl_head *h, struct hlist_bl_node *n) { LIST_BL_BUG_ON((unsigned long)n & LIST_BL_LOCKMASK); - LIST_BL_BUG_ON(!((unsigned long)h->first & LIST_BL_LOCKMASK)); + LIST_BL_BUG_ON(((unsigned long)h->first & LIST_BL_LOCKMASK) != + LIST_BL_LOCKMASK); h->first = (struct hlist_bl_node *)((unsigned long)n | LIST_BL_LOCKMASK); } diff --git a/include/linux/rculist_bl.h b/include/linux/rculist_bl.h index b872b493724d..cf1244fbf3b6 100644 --- a/include/linux/rculist_bl.h +++ b/include/linux/rculist_bl.h @@ -11,7 +11,8 @@ static inline void hlist_bl_set_first_rcu(struct hlist_bl_head *h, struct hlist_bl_node *n) { LIST_BL_BUG_ON((unsigned long)n & LIST_BL_LOCKMASK); - LIST_BL_BUG_ON(!((unsigned long)h->first & LIST_BL_LOCKMASK)); + LIST_BL_BUG_ON(((unsigned long)h->first & LIST_BL_LOCKMASK) != + LIST_BL_LOCKMASK); rcu_assign_pointer(h->first, (struct hlist_bl_node *)((unsigned long)n | LIST_BL_LOCKMASK)); } -- cgit v1.2.3 From 1ac9ad1394fa542ac7ae0dc943ee3cda678799fa Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Wed, 12 Jan 2011 12:13:14 +0000 Subject: net: remove dev_txq_stats_fold() After recent changes, (percpu stats on vlan/tunnels...), we dont need anymore per struct netdev_queue tx_bytes/tx_packets/tx_dropped counters. Only remaining users are ixgbe, sch_teql, gianfar & macvlan : 1) ixgbe can be converted to use existing tx_ring counters. 2) macvlan incremented txq->tx_dropped, it can use the dev->stats.tx_dropped counter. 3) sch_teql : almost revert ab35cd4b8f42 (Use net_device internal stats) Now we have ndo_get_stats64(), use it, even for "unsigned long" fields (No need to bring back a struct net_device_stats) 4) gianfar adds a stats structure per tx queue to hold tx_bytes/tx_packets This removes a lockdep warning (and possible lockup) in rndis gadget, calling dev_get_stats() from hard IRQ context. Ref: http://www.spinics.net/lists/netdev/msg149202.html Reported-by: Neil Jones Signed-off-by: Eric Dumazet CC: Jarek Poplawski CC: Alexander Duyck CC: Jeff Kirsher CC: Sandeep Gopalpet CC: Michal Nazarewicz Signed-off-by: David S. Miller --- include/linux/netdevice.h | 5 ----- 1 file changed, 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index be4957cf6511..d971346b0340 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -520,9 +520,6 @@ struct netdev_queue { * please use this field instead of dev->trans_start */ unsigned long trans_start; - u64 tx_bytes; - u64 tx_packets; - u64 tx_dropped; } ____cacheline_aligned_in_smp; static inline int netdev_queue_numa_node_read(const struct netdev_queue *q) @@ -2265,8 +2262,6 @@ extern void dev_load(struct net *net, const char *name); extern void dev_mcast_init(void); extern struct rtnl_link_stats64 *dev_get_stats(struct net_device *dev, struct rtnl_link_stats64 *storage); -extern void dev_txq_stats_fold(const struct net_device *dev, - struct rtnl_link_stats64 *stats); extern int netdev_max_backlog; extern int netdev_tstamp_prequeue; -- cgit v1.2.3 From 51e7eed79c41180919ff94942895ba38467d9ad4 Mon Sep 17 00:00:00 2001 From: Tobias Klauser Date: Wed, 12 Jan 2011 22:14:56 +0000 Subject: etherdevice.h: Add is_unicast_ether_addr function From a check for !is_multicast_ether_addr it is not always obvious that we're checking for a unicast address. So add this helper function to make those code paths easier to read. Signed-off-by: Tobias Klauser Acked-by: Chris Metcalf Signed-off-by: David S. Miller --- include/linux/etherdevice.h | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'include/linux') diff --git a/include/linux/etherdevice.h b/include/linux/etherdevice.h index bec8b82889bf..ab68f785fd19 100644 --- a/include/linux/etherdevice.h +++ b/include/linux/etherdevice.h @@ -98,6 +98,17 @@ static inline int is_broadcast_ether_addr(const u8 *addr) return (addr[0] & addr[1] & addr[2] & addr[3] & addr[4] & addr[5]) == 0xff; } +/** + * is_unicast_ether_addr - Determine if the Ethernet address is unicast + * @addr: Pointer to a six-byte array containing the Ethernet address + * + * Return true if the address is a unicast address. + */ +static inline int is_unicast_ether_addr(const u8 *addr) +{ + return !is_multicast_ether_addr(addr); +} + /** * is_valid_ether_addr - Determine if the given Ethernet address is valid * @addr: Pointer to a six-byte array containing the Ethernet address -- cgit v1.2.3 From bba958783b1b4cb0a9420f4e11082467132a334c Mon Sep 17 00:00:00 2001 From: Paul Mundt Date: Fri, 14 Jan 2011 15:57:47 +0900 Subject: mmc: sh_mmcif: Convert to __raw_xxx() I/O accessors. When using the I/O accessors in raw mode from the boot stubs we don't want to bother with any of the complexity associated with readl/writel and friends. Furthermore, utilization within the context of the host driver itself is all performed on an ioremapped window, so using the __raw variants there doesn't pose any problem either. If and when barriers need to be added in the future, these will need to be explicitly written out, but this is so far not a concern for any of the affected CPUs in question. This fixes up the link error introduced by the ARM tree via its barrier refactoring: arch/arm/boot/compressed/mmcif-sh7372.o: In function `mmcif_loader': mmcif-sh7372.c:(.text+0x9e8): undefined reference to `outer_cache Following the change in: http://www.arm.linux.org.uk/developer/patches/viewpatch.php?id=6275/1 Reported-by: Simon Horman Signed-off-by: Paul Mundt --- include/linux/mmc/sh_mmcif.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mmc/sh_mmcif.h b/include/linux/mmc/sh_mmcif.h index bf173502d744..38d393092812 100644 --- a/include/linux/mmc/sh_mmcif.h +++ b/include/linux/mmc/sh_mmcif.h @@ -94,12 +94,12 @@ struct sh_mmcif_plat_data { static inline u32 sh_mmcif_readl(void __iomem *addr, int reg) { - return readl(addr + reg); + return __raw_readl(addr + reg); } static inline void sh_mmcif_writel(void __iomem *addr, int reg, u32 val) { - writel(val, addr + reg); + __raw_writel(val, addr + reg); } #define SH_MMCIF_BBS 512 /* boot block size */ -- cgit v1.2.3 From 412dc11d3fd01f96fdf4a8cbfbc5584a17dab7c8 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Wed, 24 Nov 2010 18:01:41 +0000 Subject: mfd: Add WM8326 support The WM8326 is a high performance variant of the WM832x series with no software visible differences. Signed-off-by: Mark Brown Signed-off-by: Samuel Ortiz --- include/linux/mfd/wm831x/core.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/mfd/wm831x/core.h b/include/linux/mfd/wm831x/core.h index a1239c48b41a..903280d21866 100644 --- a/include/linux/mfd/wm831x/core.h +++ b/include/linux/mfd/wm831x/core.h @@ -245,6 +245,7 @@ enum wm831x_parent { WM8320 = 0x8320, WM8321 = 0x8321, WM8325 = 0x8325, + WM8326 = 0x8326, }; struct wm831x { -- cgit v1.2.3 From 4c90aa94f6b3e33f57faaf19ef9819195dff61d3 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Fri, 26 Nov 2010 17:19:34 +0000 Subject: mfd: Provide pm_runtime_no_callbacks flag in cell data Allow MFD cells to have pm_runtime_no_callbacks() called on them during registration. This causes the runtime PM framework to ignore them, allowing use of runtime PM to suspend the device as a whole even if not all drivers for the MFD can usefully implement runtime PM. For example, RTCs are likely to run continuously regardless of the power state of the system. Signed-off-by: Mark Brown Signed-off-by: Samuel Ortiz --- include/linux/mfd/core.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/core.h b/include/linux/mfd/core.h index 5582ab3d3e48..835996e167e1 100644 --- a/include/linux/mfd/core.h +++ b/include/linux/mfd/core.h @@ -47,6 +47,12 @@ struct mfd_cell { /* don't check for resource conflicts */ bool ignore_resource_conflicts; + + /* + * Disable runtime PM callbacks for this subdevice - see + * pm_runtime_no_callbacks(). + */ + bool pm_runtime_no_callbacks; }; extern int mfd_add_devices(struct device *parent, int id, -- cgit v1.2.3 From e098aded79f24e2024139e82f778ff9db6dc142a Mon Sep 17 00:00:00 2001 From: Mattias Wallin Date: Thu, 2 Dec 2010 15:40:31 +0100 Subject: mfd: ab8500-core ioresources irq for subdrivers added This patch adds the ioresources used by subdrivers to retrieve their interrupt. Signed-off-by: Mattias Wallin Signed-off-by: Samuel Ortiz --- include/linux/mfd/ab8500.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/ab8500.h b/include/linux/mfd/ab8500.h index 85cf2c28fac6..1ad169655235 100644 --- a/include/linux/mfd/ab8500.h +++ b/include/linux/mfd/ab8500.h @@ -91,8 +91,8 @@ #define AB8500_INT_ID_DET_R4F 93 #define AB8500_INT_USB_CHG_DET_DONE 94 #define AB8500_INT_USB_CH_TH_PROT_F 96 -#define AB8500_INT_USB_CH_TH_PROP_R 97 -#define AB8500_INT_MAIN_CH_TH_PROP_F 98 +#define AB8500_INT_USB_CH_TH_PROT_R 97 +#define AB8500_INT_MAIN_CH_TH_PROT_F 98 #define AB8500_INT_MAIN_CH_TH_PROT_R 99 #define AB8500_INT_USB_CHARGER_NOT_OKF 103 -- cgit v1.2.3 From cdd137c9c86c201ddb7f42ec978d2da45e7b7a17 Mon Sep 17 00:00:00 2001 From: MyungJoo Ham Date: Thu, 23 Dec 2010 17:53:36 +0900 Subject: mfd: MAX8998/LP3974 hibernation support This patch makes the driver to save and restore register values for hibernation. Signed-off-by: MyungJoo Ham Signed-off-by: Kyungmin Park Signed-off-by: Samuel Ortiz --- include/linux/mfd/max8998-private.h | 2 ++ include/linux/mfd/max8998.h | 1 + 2 files changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/max8998-private.h b/include/linux/mfd/max8998-private.h index 7363dea6bbcd..effa5d3b96ae 100644 --- a/include/linux/mfd/max8998-private.h +++ b/include/linux/mfd/max8998-private.h @@ -159,10 +159,12 @@ struct max8998_dev { u8 irq_masks_cur[MAX8998_NUM_IRQ_REGS]; u8 irq_masks_cache[MAX8998_NUM_IRQ_REGS]; int type; + bool wakeup; }; int max8998_irq_init(struct max8998_dev *max8998); void max8998_irq_exit(struct max8998_dev *max8998); +int max8998_irq_resume(struct max8998_dev *max8998); extern int max8998_read_reg(struct i2c_client *i2c, u8 reg, u8 *dest); extern int max8998_bulk_read(struct i2c_client *i2c, u8 reg, int count, diff --git a/include/linux/mfd/max8998.h b/include/linux/mfd/max8998.h index f8c9f884aff2..686a744e63fb 100644 --- a/include/linux/mfd/max8998.h +++ b/include/linux/mfd/max8998.h @@ -88,6 +88,7 @@ struct max8998_platform_data { int buck1_set1; int buck1_set2; int buck2_set3; + bool wakeup; }; #endif /* __LINUX_MFD_MAX8998_H */ -- cgit v1.2.3 From 337ce5d1c5759644cea6c47220ce7e84f0398362 Mon Sep 17 00:00:00 2001 From: MyungJoo Ham Date: Tue, 4 Jan 2011 14:17:39 +0900 Subject: mfd: Support LP3974 RTC The first releases of LP3974 have a large delay in RTC registers, which requires 2 seconds of delay after writing to a rtc register (recommended by National Semiconductor's engineers) before reading it. If "rtc_delay" field of the platform data is true, the rtc driver assumes that such delays are required. Although we have not seen LP3974s without requiring such delays, we assume that such LP3974s will be released soon (or they have done so already) and they are supported by "lp3974" without setting "rtc_delay" at the platform data. This patch adds delays with msleep when writing values to RTC registers if the platform data has rtc_delay set. Signed-off-by: MyungJoo Ham Signed-off-by: Kyungmin Park Reviewed-by: Mark Brown Signed-off-by: Samuel Ortiz --- include/linux/mfd/max8998.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/max8998.h b/include/linux/mfd/max8998.h index 686a744e63fb..c22b9a417c35 100644 --- a/include/linux/mfd/max8998.h +++ b/include/linux/mfd/max8998.h @@ -76,6 +76,9 @@ struct max8998_regulator_data { * @buck1_set1: BUCK1 gpio pin 1 to set output voltage * @buck1_set2: BUCK1 gpio pin 2 to set output voltage * @buck2_set3: BUCK2 gpio pin to set output voltage + * @wakeup: Allow to wake up from suspend + * @rtc_delay: LP3974 RTC chip bug that requires delay after a register + * write before reading it. */ struct max8998_platform_data { struct max8998_regulator_data *regulators; @@ -89,6 +92,7 @@ struct max8998_platform_data { int buck1_set2; int buck2_set3; bool wakeup; + bool rtc_delay; }; #endif /* __LINUX_MFD_MAX8998_H */ -- cgit v1.2.3 From 735a3d9efdc5aeebe201008e6655b235c7f02aeb Mon Sep 17 00:00:00 2001 From: MyungJoo Ham Date: Tue, 11 Jan 2011 12:20:05 +0100 Subject: regulator: Support MAX8998/LP3974 DVS-GPIO The previous driver did not support BUCK1-DVS3, BUCK1-DVS4, and BUCK2-DVS2 modes. This patch adds such modes and an option to block setting buck1/2 voltages out of the preset values. Signed-off-by: MyungJoo Ham Signed-off-by: Kyungmin Park Acked-by: Mark Brown Signed-off-by: Samuel Ortiz --- include/linux/mfd/max8998.h | 26 ++++++++++++++++++++------ 1 file changed, 20 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/max8998.h b/include/linux/mfd/max8998.h index c22b9a417c35..61daa167b576 100644 --- a/include/linux/mfd/max8998.h +++ b/include/linux/mfd/max8998.h @@ -70,12 +70,20 @@ struct max8998_regulator_data { * @num_regulators: number of regultors used * @irq_base: base IRQ number for max8998, required for IRQs * @ono: power onoff IRQ number for max8998 - * @buck1_max_voltage1: BUCK1 maximum alowed voltage register 1 - * @buck1_max_voltage2: BUCK1 maximum alowed voltage register 2 - * @buck2_max_voltage: BUCK2 maximum alowed voltage + * @buck_voltage_lock: Do NOT change the values of the following six + * registers set by buck?_voltage?. The voltage of BUCK1/2 cannot + * be other than the preset values. + * @buck1_voltage1: BUCK1 DVS mode 1 voltage register + * @buck1_voltage2: BUCK1 DVS mode 2 voltage register + * @buck1_voltage3: BUCK1 DVS mode 3 voltage register + * @buck1_voltage4: BUCK1 DVS mode 4 voltage register + * @buck2_voltage1: BUCK2 DVS mode 1 voltage register + * @buck2_voltage2: BUCK2 DVS mode 2 voltage register * @buck1_set1: BUCK1 gpio pin 1 to set output voltage * @buck1_set2: BUCK1 gpio pin 2 to set output voltage + * @buck1_default_idx: Default for BUCK1 gpio pin 1, 2 * @buck2_set3: BUCK2 gpio pin to set output voltage + * @buck2_default_idx: Default for BUCK2 gpio pin. * @wakeup: Allow to wake up from suspend * @rtc_delay: LP3974 RTC chip bug that requires delay after a register * write before reading it. @@ -85,12 +93,18 @@ struct max8998_platform_data { int num_regulators; int irq_base; int ono; - int buck1_max_voltage1; - int buck1_max_voltage2; - int buck2_max_voltage; + bool buck_voltage_lock; + int buck1_voltage1; + int buck1_voltage2; + int buck1_voltage3; + int buck1_voltage4; + int buck2_voltage1; + int buck2_voltage2; int buck1_set1; int buck1_set2; + int buck1_default_idx; int buck2_set3; + int buck2_default_idx; bool wakeup; bool rtc_delay; }; -- cgit v1.2.3 From 92d50a4132977b932ed830fa58c05deeb5c524f0 Mon Sep 17 00:00:00 2001 From: Mattias Wallin Date: Tue, 7 Dec 2010 11:20:47 +0100 Subject: mfd: ab8500-core chip version cut 2.0 support This patch adds support for chip version 2.0 or cut 2.0. One new interrupt latch register - latch 12 - is introduced. Signed-off-by: Mattias Wallin Acked-by: Linus Walleij Signed-off-by: Samuel Ortiz --- include/linux/mfd/ab8500.h | 53 ++++++++++++++++++++++++++-------------------- 1 file changed, 30 insertions(+), 23 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/ab8500.h b/include/linux/mfd/ab8500.h index 1ad169655235..37f56b7c4c15 100644 --- a/include/linux/mfd/ab8500.h +++ b/include/linux/mfd/ab8500.h @@ -74,30 +74,37 @@ #define AB8500_INT_ACC_DETECT_21DB_F 37 #define AB8500_INT_ACC_DETECT_21DB_R 38 #define AB8500_INT_GP_SW_ADC_CONV_END 39 -#define AB8500_INT_BTEMP_LOW 72 -#define AB8500_INT_BTEMP_LOW_MEDIUM 73 -#define AB8500_INT_BTEMP_MEDIUM_HIGH 74 -#define AB8500_INT_BTEMP_HIGH 75 -#define AB8500_INT_USB_CHARGER_NOT_OK 81 -#define AB8500_INT_ID_WAKEUP_R 82 -#define AB8500_INT_ID_DET_R1R 84 -#define AB8500_INT_ID_DET_R2R 85 -#define AB8500_INT_ID_DET_R3R 86 -#define AB8500_INT_ID_DET_R4R 87 -#define AB8500_INT_ID_WAKEUP_F 88 -#define AB8500_INT_ID_DET_R1F 90 -#define AB8500_INT_ID_DET_R2F 91 -#define AB8500_INT_ID_DET_R3F 92 -#define AB8500_INT_ID_DET_R4F 93 -#define AB8500_INT_USB_CHG_DET_DONE 94 -#define AB8500_INT_USB_CH_TH_PROT_F 96 -#define AB8500_INT_USB_CH_TH_PROT_R 97 -#define AB8500_INT_MAIN_CH_TH_PROT_F 98 -#define AB8500_INT_MAIN_CH_TH_PROT_R 99 -#define AB8500_INT_USB_CHARGER_NOT_OKF 103 +#define AB8500_INT_ADP_SOURCE_ERROR 72 +#define AB8500_INT_ADP_SINK_ERROR 73 +#define AB8500_INT_ADP_PROBE_PLUG 74 +#define AB8500_INT_ADP_PROBE_UNPLUG 75 +#define AB8500_INT_ADP_SENSE_OFF 76 +#define AB8500_INT_USB_PHY_POWER_ERR 78 +#define AB8500_INT_USB_LINK_STATUS 79 +#define AB8500_INT_BTEMP_LOW 80 +#define AB8500_INT_BTEMP_LOW_MEDIUM 81 +#define AB8500_INT_BTEMP_MEDIUM_HIGH 82 +#define AB8500_INT_BTEMP_HIGH 83 +#define AB8500_INT_USB_CHARGER_NOT_OK 89 +#define AB8500_INT_ID_WAKEUP_R 90 +#define AB8500_INT_ID_DET_R1R 92 +#define AB8500_INT_ID_DET_R2R 93 +#define AB8500_INT_ID_DET_R3R 94 +#define AB8500_INT_ID_DET_R4R 95 +#define AB8500_INT_ID_WAKEUP_F 96 +#define AB8500_INT_ID_DET_R1F 98 +#define AB8500_INT_ID_DET_R2F 99 +#define AB8500_INT_ID_DET_R3F 100 +#define AB8500_INT_ID_DET_R4F 101 +#define AB8500_INT_USB_CHG_DET_DONE 102 +#define AB8500_INT_USB_CH_TH_PROT_F 104 +#define AB8500_INT_USB_CH_TH_PROT_R 105 +#define AB8500_INT_MAIN_CH_TH_PROT_F 106 +#define AB8500_INT_MAIN_CH_TH_PROT_R 107 +#define AB8500_INT_USB_CHARGER_NOT_OKF 111 -#define AB8500_NR_IRQS 104 -#define AB8500_NUM_IRQ_REGS 13 +#define AB8500_NR_IRQS 112 +#define AB8500_NUM_IRQ_REGS 14 /** * struct ab8500 - ab8500 internal structure -- cgit v1.2.3 From 32385c7cf60a78375b63afc4f02001df84dfd1a0 Mon Sep 17 00:00:00 2001 From: Russell King Date: Fri, 14 Jan 2011 13:12:45 +0000 Subject: kernel: fix hlist_bl again __d_rehash is dereferencing an almost-NULL pointer on my ARM926. CONFIG_SMP=n and CONFIG_DEBUG_SPINLOCK=y. The faulting instruction is: strne r3, [r2, #4] and as can be seen from the register dump below, r2 is 0x00000001, hence the faulting 0x00000005 address. __d_rehash is essentially: spin_lock_bucket(b); entry->d_flags &= ~DCACHE_UNHASHED; hlist_bl_add_head_rcu(&entry->d_hash, &b->head); spin_unlock_bucket(b); which is: bit_spin_lock(0, (unsigned long *)&b->head.first); entry->d_flags &= ~DCACHE_UNHASHED; hlist_bl_add_head_rcu(&entry->d_hash, &b->head); __bit_spin_unlock(0, (unsigned long *)&b->head.first); bit_spin_lock(0, ptr) sets bit 0 of *ptr, in this case b->head.first if CONFIG_SMP or CONFIG_DEBUG_SPINLOCK is set: #if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK) while (unlikely(test_and_set_bit_lock(bitnum, addr))) { while (test_bit(bitnum, addr)) { preempt_enable(); cpu_relax(); preempt_disable(); } } #endif So, b->head.first starts off NULL, and becomes a non-NULL (address 1). hlist_bl_add_head_rcu() does this: static inline void hlist_bl_add_head_rcu(struct hlist_bl_node *n, struct hlist_bl_head *h) { first = hlist_bl_first(h); n->next = first; if (first) first->pprev = &n->next; It is the store to first->pprev which is faulting. hlist_bl_first(): static inline struct hlist_bl_node *hlist_bl_first(struct hlist_bl_head *h) { return (struct hlist_bl_node *) ((unsigned long)h->first & ~LIST_BL_LOCKMASK); } but: #if defined(CONFIG_SMP) #define LIST_BL_LOCKMASK 1UL #else #define LIST_BL_LOCKMASK 0UL #endif So, we have one piece of code which sets bit 0 of addresses, and another bit of code which doesn't clear it before dereferencing the pointer if !CONFIG_SMP && CONFIG_DEBUG_SPINLOCK. With the patch below, I can again sucessfully boot the kernel on my Versatile PB/926 platform. Signed-off-by: Russell King --- include/linux/list_bl.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/list_bl.h b/include/linux/list_bl.h index b2adbb4b2f73..5bad17d1acde 100644 --- a/include/linux/list_bl.h +++ b/include/linux/list_bl.h @@ -16,7 +16,7 @@ * some fast and compact auxiliary data. */ -#if defined(CONFIG_SMP) +#if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK) #define LIST_BL_LOCKMASK 1UL #else #define LIST_BL_LOCKMASK 0UL -- cgit v1.2.3 From 359ab9f5b154cbd807a11e22792235f0f36b0cd5 Mon Sep 17 00:00:00 2001 From: MyungJoo Ham Date: Fri, 14 Jan 2011 14:46:11 +0900 Subject: power_supply: Add MAX17042 Fuel Gauge Driver The MAX17042 is a fuel gauge with an I2C interface for lithium-ion betteries. Unlike its predecessor MAX17040, MAX17042 uses 16bit registers. Besides, MAX17042 has much more features than MAX17040; e.g., a thermistor, current and current accumulation measurement, battery internal resistance estimate, average values of measurement, and others. This patch implements a driver for MAX17042. In this initial release, we have implemented the most basic features of a fuel gauge: measure the battery capacity and voltage. Signed-off-by: MyungJoo Ham Signed-off-by: Kyungmin Park Signed-off-by: Anton Vorontsov --- include/linux/power/max17042_battery.h | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 include/linux/power/max17042_battery.h (limited to 'include/linux') diff --git a/include/linux/power/max17042_battery.h b/include/linux/power/max17042_battery.h new file mode 100644 index 000000000000..7995deb8bfc1 --- /dev/null +++ b/include/linux/power/max17042_battery.h @@ -0,0 +1,30 @@ +/* + * Fuel gauge driver for Maxim 17042 / 8966 / 8997 + * Note that Maxim 8966 and 8997 are mfd and this is its subdevice. + * + * Copyright (C) 2011 Samsung Electronics + * MyungJoo Ham + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#ifndef __MAX17042_BATTERY_H_ +#define __MAX17042_BATTERY_H_ + +struct max17042_platform_data { + bool enable_current_sense; +}; + +#endif /* __MAX17042_BATTERY_H_ */ -- cgit v1.2.3 From 836cb711ad7960e52625b24195d6e70b79ab0816 Mon Sep 17 00:00:00 2001 From: KAMEZAWA Hiroyuki Date: Fri, 14 Jan 2011 14:56:53 +0900 Subject: Revert update for dirty_ratio for memcg. The flags added by commit db16d5ec1f87f17511599bc77857dd1662b5a22f has no user now. We believe we'll use it soon but considering patch reviewing, the change itself should be folded into incoming set of "dirty ratio for memcg" patches. So, it's better to drop this change from current mainline tree. Signed-off-by: KAMEZAWA Hiroyuki Reviewed-by: Greg Thelen Signed-off-by: Linus Torvalds --- include/linux/page_cgroup.h | 23 ----------------------- 1 file changed, 23 deletions(-) (limited to 'include/linux') diff --git a/include/linux/page_cgroup.h b/include/linux/page_cgroup.h index 5b0c971d7cae..6d6cb7a57bb3 100644 --- a/include/linux/page_cgroup.h +++ b/include/linux/page_cgroup.h @@ -42,9 +42,6 @@ enum { /* flags for mem_cgroup and file and I/O status */ PCG_MOVE_LOCK, /* For race between move_account v.s. following bits */ PCG_FILE_MAPPED, /* page is accounted as "mapped" */ - PCG_FILE_DIRTY, /* page is dirty */ - PCG_FILE_WRITEBACK, /* page is under writeback */ - PCG_FILE_UNSTABLE_NFS, /* page is NFS unstable */ /* No lock in page_cgroup */ PCG_ACCT_LRU, /* page has been accounted for (under lru_lock) */ }; @@ -65,10 +62,6 @@ static inline void ClearPageCgroup##uname(struct page_cgroup *pc) \ static inline int TestClearPageCgroup##uname(struct page_cgroup *pc) \ { return test_and_clear_bit(PCG_##lname, &pc->flags); } -#define TESTSETPCGFLAG(uname, lname) \ -static inline int TestSetPageCgroup##uname(struct page_cgroup *pc) \ - { return test_and_set_bit(PCG_##lname, &pc->flags); } - /* Cache flag is set only once (at allocation) */ TESTPCGFLAG(Cache, CACHE) CLEARPCGFLAG(Cache, CACHE) @@ -88,22 +81,6 @@ SETPCGFLAG(FileMapped, FILE_MAPPED) CLEARPCGFLAG(FileMapped, FILE_MAPPED) TESTPCGFLAG(FileMapped, FILE_MAPPED) -SETPCGFLAG(FileDirty, FILE_DIRTY) -CLEARPCGFLAG(FileDirty, FILE_DIRTY) -TESTPCGFLAG(FileDirty, FILE_DIRTY) -TESTCLEARPCGFLAG(FileDirty, FILE_DIRTY) -TESTSETPCGFLAG(FileDirty, FILE_DIRTY) - -SETPCGFLAG(FileWriteback, FILE_WRITEBACK) -CLEARPCGFLAG(FileWriteback, FILE_WRITEBACK) -TESTPCGFLAG(FileWriteback, FILE_WRITEBACK) - -SETPCGFLAG(FileUnstableNFS, FILE_UNSTABLE_NFS) -CLEARPCGFLAG(FileUnstableNFS, FILE_UNSTABLE_NFS) -TESTPCGFLAG(FileUnstableNFS, FILE_UNSTABLE_NFS) -TESTCLEARPCGFLAG(FileUnstableNFS, FILE_UNSTABLE_NFS) -TESTSETPCGFLAG(FileUnstableNFS, FILE_UNSTABLE_NFS) - SETPCGFLAG(Migration, MIGRATION) CLEARPCGFLAG(Migration, MIGRATION) TESTPCGFLAG(Migration, MIGRATION) -- cgit v1.2.3 From 323b7fe8f8f6d5ac6214382cf30e8b3a80b265c9 Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Fri, 14 Jan 2011 09:34:29 +0100 Subject: include/gpio.h: remove remaining __must_check-annotiations Commit 5f829e405ec4e96f711165a4a7b55c271d4363e2 (gpiolib: add missing functions to generic fallback) also introduced two. Signed-off-by: Wolfram Sang Cc: Greg KH Cc: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/gpio.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/gpio.h b/include/linux/gpio.h index 4b47ed96f131..32720baf70f1 100644 --- a/include/linux/gpio.h +++ b/include/linux/gpio.h @@ -35,13 +35,13 @@ static inline int gpio_request(unsigned gpio, const char *label) return -ENOSYS; } -static inline int __must_check gpio_request_one(unsigned gpio, +static inline int gpio_request_one(unsigned gpio, unsigned long flags, const char *label) { return -ENOSYS; } -static inline int __must_check gpio_request_array(struct gpio *array, size_t num) +static inline int gpio_request_array(struct gpio *array, size_t num) { return -ENOSYS; } -- cgit v1.2.3 From 415e12b2379239973feab91850b0dce985c6058a Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Fri, 7 Jan 2011 00:55:09 +0100 Subject: PCI/ACPI: Request _OSC control once for each root bridge (v3) Move the evaluation of acpi_pci_osc_control_set() (to request control of PCI Express native features) into acpi_pci_root_add() to avoid calling it many times for the same root complex with the same arguments. Additionally, check if all of the requisite _OSC support bits are set before calling acpi_pci_osc_control_set() for a given root complex. References: https://bugzilla.kernel.org/show_bug.cgi?id=20232 Reported-by: Ozan Caglayan Tested-by: Ozan Caglayan Signed-off-by: Rafael J. Wysocki Signed-off-by: Jesse Barnes --- include/linux/pci-acpi.h | 6 ++++++ include/linux/pci.h | 11 +++++++++++ 2 files changed, 17 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pci-acpi.h b/include/linux/pci-acpi.h index c8b6473c5f42..479d9bb88e11 100644 --- a/include/linux/pci-acpi.h +++ b/include/linux/pci-acpi.h @@ -40,4 +40,10 @@ static inline acpi_handle acpi_find_root_bridge_handle(struct pci_dev *pdev) { return NULL; } #endif +#ifdef CONFIG_ACPI_APEI +extern bool aer_acpi_firmware_first(void); +#else +static inline bool aer_acpi_firmware_first(void) { return false; } +#endif + #endif /* _PCI_ACPI_H_ */ diff --git a/include/linux/pci.h b/include/linux/pci.h index 63cbadce337e..12dd86a82a15 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -994,6 +994,9 @@ extern void pci_restore_msi_state(struct pci_dev *dev); extern int pci_msi_enabled(void); #endif +extern bool pcie_ports_disabled; +extern bool pcie_ports_auto; + #ifndef CONFIG_PCIEASPM static inline int pcie_aspm_enabled(void) { @@ -1003,6 +1006,14 @@ static inline int pcie_aspm_enabled(void) extern int pcie_aspm_enabled(void); #endif +#ifdef CONFIG_PCIEAER +void pci_no_aer(void); +bool pci_aer_available(void); +#else +static inline void pci_no_aer(void) { } +static inline bool pci_aer_available(void) { return false; } +#endif + #ifndef CONFIG_PCIE_ECRC static inline void pcie_set_ecrc_checking(struct pci_dev *dev) { -- cgit v1.2.3 From b6e335aeeb114dccb07eaa09e8b62ff9510cf745 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Wed, 29 Dec 2010 13:21:23 +0100 Subject: PCI/PM: Use pm_wakeup_event() directly for reporting wakeup events After recent changes related to wakeup events pm_wakeup_event() automatically checks if the given device is configured to signal wakeup, so pci_wakeup_event() may be a static inline function calling pm_wakeup_event() directly. Signed-off-by: Rafael J. Wysocki Signed-off-by: Jesse Barnes --- include/linux/pci.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/pci.h b/include/linux/pci.h index 12dd86a82a15..9e67dcd054c4 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -820,7 +820,6 @@ int pci_prepare_to_sleep(struct pci_dev *dev); int pci_back_from_sleep(struct pci_dev *dev); bool pci_dev_run_wake(struct pci_dev *dev); bool pci_check_pme_status(struct pci_dev *dev); -void pci_wakeup_event(struct pci_dev *dev); void pci_pme_wakeup_bus(struct pci_bus *bus); static inline int pci_enable_wake(struct pci_dev *dev, pci_power_t state, -- cgit v1.2.3 From 49731baa41df404c2c3f44555869ab387363af43 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Fri, 14 Jan 2011 18:43:57 +0100 Subject: block: restore multiple bd_link_disk_holder() support Commit e09b457b (block: simplify holder symlink handling) incorrectly assumed that there is only one link at maximum. dm may use multiple links and expects block layer to track reference count for each link, which is different from and unrelated to the exclusive device holder identified by @holder when the device is opened. Remove the single holder assumption and automatic removal of the link and revive the per-link reference count tracking. The code essentially behaves the same as before commit e09b457b sans the unnecessary kobject reference count dancing. While at it, note that this facility should not be used by anyone else than the current ones. Sysfs symlinks shouldn't be abused like this and the whole thing doesn't belong in the block layer at all. Signed-off-by: Tejun Heo Reported-by: Milan Broz Cc: Jun'ichi Nomura Cc: Neil Brown Cc: linux-raid@vger.kernel.org Cc: Kay Sievers Signed-off-by: Jens Axboe --- include/linux/fs.h | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index 3984f2358d1f..fb2190349cdf 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -666,7 +666,7 @@ struct block_device { int bd_holders; bool bd_write_holder; #ifdef CONFIG_SYSFS - struct gendisk * bd_holder_disk; /* for sysfs slave linkng */ + struct list_head bd_holder_disks; #endif struct block_device * bd_contains; unsigned bd_block_size; @@ -2058,12 +2058,18 @@ extern struct block_device *blkdev_get_by_dev(dev_t dev, fmode_t mode, extern int blkdev_put(struct block_device *bdev, fmode_t mode); #ifdef CONFIG_SYSFS extern int bd_link_disk_holder(struct block_device *bdev, struct gendisk *disk); +extern void bd_unlink_disk_holder(struct block_device *bdev, + struct gendisk *disk); #else static inline int bd_link_disk_holder(struct block_device *bdev, struct gendisk *disk) { return 0; } +static inline void bd_unlink_disk_holder(struct block_device *bdev, + struct gendisk *disk) +{ +} #endif #endif -- cgit v1.2.3 From ab0724ffee24409a7f81afb539b2ac29090bff3e Mon Sep 17 00:00:00 2001 From: Markus Trippelsdorf Date: Sat, 15 Jan 2011 00:07:22 +0100 Subject: PCI / ACPI: Fix build issue in pci_root.c for !CONFIG_PCIEPORTBUS The compilation of drivers/acpi/pci_root.c fails if CONFIG_PCIEPORTBUS is unset. Fix the problem. Signed-off-by: Rafael J. Wysocki Signed-off-by: Linus Torvalds --- include/linux/pci.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pci.h b/include/linux/pci.h index 9e67dcd054c4..559d02897075 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -993,8 +993,13 @@ extern void pci_restore_msi_state(struct pci_dev *dev); extern int pci_msi_enabled(void); #endif +#ifdef CONFIG_PCIEPORTBUS extern bool pcie_ports_disabled; extern bool pcie_ports_auto; +#else +#define pcie_ports_disabled true +#define pcie_ports_auto false +#endif #ifndef CONFIG_PCIEASPM static inline int pcie_aspm_enabled(void) -- cgit v1.2.3 From 0029227f1bc30b6c809ae751f9e7af6cef900997 Mon Sep 17 00:00:00 2001 From: Andiry Xu Date: Mon, 27 Dec 2010 17:39:02 +0800 Subject: xHCI: synchronize irq in xhci_suspend() Synchronize the interrupts instead of free them in xhci_suspend(). This will prevent a double free when the host is suspended and then the card removed. Set the flag hcd->msix_enabled when using MSI-X, and check the flag in suspend_common(). MSI-X synchronization will be handled by xhci_suspend(), and MSI/INTx will be synchronized in suspend_common(). This patch should be queued for the 2.6.37 stable tree. Reported-by: Matthew Garrett Signed-off-by: Andiry Xu Signed-off-by: Sarah Sharp Cc: stable@kernel.org --- include/linux/usb/hcd.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h index dd6ee49a0844..a854fe89484e 100644 --- a/include/linux/usb/hcd.h +++ b/include/linux/usb/hcd.h @@ -112,6 +112,7 @@ struct usb_hcd { /* Flags that get set only during HCD registration or removal. */ unsigned rh_registered:1;/* is root hub registered? */ unsigned rh_pollable:1; /* may we poll the root hub? */ + unsigned msix_enabled:1; /* driver has MSI-X enabled? */ /* The next flag is a stopgap, to be removed when all the HCDs * support the new root-hub polling mechanism. */ -- cgit v1.2.3 From 98d530fe246b65fbd3cdeeeca319a80c46cb4793 Mon Sep 17 00:00:00 2001 From: Russell King - ARM Linux Date: Sat, 1 Jan 2011 23:00:23 +0000 Subject: Fix dmaengine_submit() return type desc->tx_submit's return type is dma_cookie_t, not int. Therefore, dmaengine_submit() should match this return type as it's just wrapping this detail. Signed-off-by: Russell King Signed-off-by: Dan Williams --- include/linux/dmaengine.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index 9d8688b92d8b..830935b7c49c 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -532,7 +532,7 @@ static inline int dmaengine_resume(struct dma_chan *chan) return dmaengine_device_control(chan, DMA_RESUME, 0); } -static inline int dmaengine_submit(struct dma_async_tx_descriptor *desc) +static inline dma_cookie_t dmaengine_submit(struct dma_async_tx_descriptor *desc) { return desc->tx_submit(desc); } -- cgit v1.2.3 From 96a608a4bfd8468c21881b3f92024923886eb015 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Fri, 14 Jan 2011 17:51:11 -0800 Subject: ARM: PL08x: fix a warning drivers/dma/amba-pl08x.c: In function 'pl08x_start_txd': drivers/dma/amba-pl08x.c:205: warning: dereferencing 'void *' pointer We never dereference llis_va aside from assigning it to a struct pl08x_lli pointer or calculating the address of array element 0. Signed-off-by: Dan Williams --- include/linux/amba/pl08x.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/amba/pl08x.h b/include/linux/amba/pl08x.h index 933b4ed12be5..5b87b6aac3f8 100644 --- a/include/linux/amba/pl08x.h +++ b/include/linux/amba/pl08x.h @@ -118,7 +118,7 @@ struct pl08x_txd { dma_addr_t dst_addr; size_t len; dma_addr_t llis_bus; - void *llis_va; + struct pl08x_lli *llis_va; bool active; /* Default cctl value for LLIs */ u32 cctl; -- cgit v1.2.3 From 9875cf806403fae66b2410a3c2cc820d97731e04 Mon Sep 17 00:00:00 2001 From: David Howells Date: Fri, 14 Jan 2011 18:45:21 +0000 Subject: Add a dentry op to handle automounting rather than abusing follow_link() Add a dentry op (d_automount) to handle automounting directories rather than abusing the follow_link() inode operation. The operation is keyed off a new dentry flag (DCACHE_NEED_AUTOMOUNT). This also makes it easier to add an AT_ flag to suppress terminal segment automount during pathwalk and removes the need for the kludge code in the pathwalk algorithm to handle directories with follow_link() semantics. The ->d_automount() dentry operation: struct vfsmount *(*d_automount)(struct path *mountpoint); takes a pointer to the directory to be mounted upon, which is expected to provide sufficient data to determine what should be mounted. If successful, it should return the vfsmount struct it creates (which it should also have added to the namespace using do_add_mount() or similar). If there's a collision with another automount attempt, NULL should be returned. If the directory specified by the parameter should be used directly rather than being mounted upon, -EISDIR should be returned. In any other case, an error code should be returned. The ->d_automount() operation is called with no locks held and may sleep. At this point the pathwalk algorithm will be in ref-walk mode. Within fs/namei.c itself, a new pathwalk subroutine (follow_automount()) is added to handle mountpoints. It will return -EREMOTE if the automount flag was set, but no d_automount() op was supplied, -ELOOP if we've encountered too many symlinks or mountpoints, -EISDIR if the walk point should be used without mounting and 0 if successful. The path will be updated to point to the mounted filesystem if a successful automount took place. __follow_mount() is replaced by follow_managed() which is more generic (especially with the patch that adds ->d_manage()). This handles transits from directories during pathwalk, including automounting and skipping over mountpoints (and holding processes with the next patch). __follow_mount_rcu() will jump out of RCU-walk mode if it encounters an automount point with nothing mounted on it. follow_dotdot*() does not handle automounts as you don't want to trigger them whilst following "..". I've also extracted the mount/don't-mount logic from autofs4 and included it here. It makes the mount go ahead anyway if someone calls open() or creat(), tries to traverse the directory, tries to chdir/chroot/etc. into the directory, or sticks a '/' on the end of the pathname. If they do a stat(), however, they'll only trigger the automount if they didn't also say O_NOFOLLOW. I've also added an inode flag (S_AUTOMOUNT) so that filesystems can mark their inodes as automount points. This flag is automatically propagated to the dentry as DCACHE_NEED_AUTOMOUNT by __d_instantiate(). This saves NFS and could save AFS a private flag bit apiece, but is not strictly necessary. It would be preferable to do the propagation in d_set_d_op(), but that doesn't normally have access to the inode. [AV: fixed breakage in case if __follow_mount_rcu() fails and nameidata_drop_rcu() succeeds in RCU case of do_lookup(); we need to fall through to non-RCU case after that, rather than just returning with ungrabbed *path] Signed-off-by: David Howells Was-Acked-by: Ian Kent Signed-off-by: Al Viro --- include/linux/dcache.h | 7 ++++++- include/linux/fs.h | 2 ++ 2 files changed, 8 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/dcache.h b/include/linux/dcache.h index 59fcd24b1468..ee6c26d142c3 100644 --- a/include/linux/dcache.h +++ b/include/linux/dcache.h @@ -167,6 +167,7 @@ struct dentry_operations { void (*d_release)(struct dentry *); void (*d_iput)(struct dentry *, struct inode *); char *(*d_dname)(struct dentry *, char *, int); + struct vfsmount *(*d_automount)(struct path *); } ____cacheline_aligned; /* @@ -205,13 +206,17 @@ struct dentry_operations { #define DCACHE_CANT_MOUNT 0x0100 #define DCACHE_GENOCIDE 0x0200 -#define DCACHE_MOUNTED 0x0400 /* is a mountpoint */ #define DCACHE_OP_HASH 0x1000 #define DCACHE_OP_COMPARE 0x2000 #define DCACHE_OP_REVALIDATE 0x4000 #define DCACHE_OP_DELETE 0x8000 +#define DCACHE_MOUNTED 0x10000 /* is a mountpoint */ +#define DCACHE_NEED_AUTOMOUNT 0x20000 /* handle automount on this dir */ +#define DCACHE_MANAGED_DENTRY \ + (DCACHE_MOUNTED|DCACHE_NEED_AUTOMOUNT) + extern seqlock_t rename_lock; static inline int dname_external(struct dentry *dentry) diff --git a/include/linux/fs.h b/include/linux/fs.h index 3984f2358d1f..4c00ed53be8f 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -242,6 +242,7 @@ struct inodes_stat_t { #define S_SWAPFILE 256 /* Do not truncate: swapon got its bmaps */ #define S_PRIVATE 512 /* Inode is fs-internal */ #define S_IMA 1024 /* Inode has an associated IMA struct */ +#define S_AUTOMOUNT 2048 /* Automount/referral quasi-directory */ /* * Note that nosuid etc flags are inode-specific: setting some file-system @@ -277,6 +278,7 @@ struct inodes_stat_t { #define IS_SWAPFILE(inode) ((inode)->i_flags & S_SWAPFILE) #define IS_PRIVATE(inode) ((inode)->i_flags & S_PRIVATE) #define IS_IMA(inode) ((inode)->i_flags & S_IMA) +#define IS_AUTOMOUNT(inode) ((inode)->i_flags & S_AUTOMOUNT) /* the read-only stuff doesn't really belong here, but any other place is probably as bad and I don't want to create yet another include file. */ -- cgit v1.2.3 From cc53ce53c86924bfe98a12ea20b7465038a08792 Mon Sep 17 00:00:00 2001 From: David Howells Date: Fri, 14 Jan 2011 18:45:26 +0000 Subject: Add a dentry op to allow processes to be held during pathwalk transit Add a dentry op (d_manage) to permit a filesystem to hold a process and make it sleep when it tries to transit away from one of that filesystem's directories during a pathwalk. The operation is keyed off a new dentry flag (DCACHE_MANAGE_TRANSIT). The filesystem is allowed to be selective about which processes it holds and which it permits to continue on or prohibits from transiting from each flagged directory. This will allow autofs to hold up client processes whilst letting its userspace daemon through to maintain the directory or the stuff behind it or mounted upon it. The ->d_manage() dentry operation: int (*d_manage)(struct path *path, bool mounting_here); takes a pointer to the directory about to be transited away from and a flag indicating whether the transit is undertaken by do_add_mount() or do_move_mount() skipping through a pile of filesystems mounted on a mountpoint. It should return 0 if successful and to let the process continue on its way; -EISDIR to prohibit the caller from skipping to overmounted filesystems or automounting, and to use this directory; or some other error code to return to the user. ->d_manage() is called with namespace_sem writelocked if mounting_here is true and no other locks held, so it may sleep. However, if mounting_here is true, it may not initiate or wait for a mount or unmount upon the parameter directory, even if the act is actually performed by userspace. Within fs/namei.c, follow_managed() is extended to check with d_manage() first on each managed directory, before transiting away from it or attempting to automount upon it. follow_down() is renamed follow_down_one() and should only be used where the filesystem deliberately intends to avoid management steps (e.g. autofs). A new follow_down() is added that incorporates the loop done by all other callers of follow_down() (do_add/move_mount(), autofs and NFSD; whilst AFS, NFS and CIFS do use it, their use is removed by converting them to use d_automount()). The new follow_down() calls d_manage() as appropriate. It also takes an extra parameter to indicate if it is being called from mount code (with namespace_sem writelocked) which it passes to d_manage(). follow_down() ignores automount points so that it can be used to mount on them. __follow_mount_rcu() is made to abort rcu-walk mode if it hits a directory with DCACHE_MANAGE_TRANSIT set on the basis that we're probably going to have to sleep. It would be possible to enter d_manage() in rcu-walk mode too, and have that determine whether to abort or not itself. That would allow the autofs daemon to continue on in rcu-walk mode. Note that DCACHE_MANAGE_TRANSIT on a directory should be cleared when it isn't required as every tranist from that directory will cause d_manage() to be invoked. It can always be set again when necessary. ========================== WHAT THIS MEANS FOR AUTOFS ========================== Autofs currently uses the lookup() inode op and the d_revalidate() dentry op to trigger the automounting of indirect mounts, and both of these can be called with i_mutex held. autofs knows that the i_mutex will be held by the caller in lookup(), and so can drop it before invoking the daemon - but this isn't so for d_revalidate(), since the lock is only held on _some_ of the code paths that call it. This means that autofs can't risk dropping i_mutex from its d_revalidate() function before it calls the daemon. The bug could manifest itself as, for example, a process that's trying to validate an automount dentry that gets made to wait because that dentry is expired and needs cleaning up: mkdir S ffffffff8014e05a 0 32580 24956 Call Trace: [] :autofs4:autofs4_wait+0x674/0x897 [] avc_has_perm+0x46/0x58 [] autoremove_wake_function+0x0/0x2e [] :autofs4:autofs4_expire_wait+0x41/0x6b [] :autofs4:autofs4_revalidate+0x91/0x149 [] __lookup_hash+0xa0/0x12f [] lookup_create+0x46/0x80 [] sys_mkdirat+0x56/0xe4 versus the automount daemon which wants to remove that dentry, but can't because the normal process is holding the i_mutex lock: automount D ffffffff8014e05a 0 32581 1 32561 Call Trace: [] __mutex_lock_slowpath+0x60/0x9b [] do_path_lookup+0x2ca/0x2f1 [] .text.lock.mutex+0xf/0x14 [] do_rmdir+0x77/0xde [] tracesys+0x71/0xe0 [] tracesys+0xd5/0xe0 which means that the system is deadlocked. This patch allows autofs to hold up normal processes whilst the daemon goes ahead and does things to the dentry tree behind the automouter point without risking a deadlock as almost no locks are held in d_manage() and none in d_automount(). Signed-off-by: David Howells Was-Acked-by: Ian Kent Signed-off-by: Al Viro --- include/linux/dcache.h | 11 +++++++++-- include/linux/namei.h | 3 ++- 2 files changed, 11 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/dcache.h b/include/linux/dcache.h index ee6c26d142c3..1a87760d6532 100644 --- a/include/linux/dcache.h +++ b/include/linux/dcache.h @@ -168,6 +168,7 @@ struct dentry_operations { void (*d_iput)(struct dentry *, struct inode *); char *(*d_dname)(struct dentry *, char *, int); struct vfsmount *(*d_automount)(struct path *); + int (*d_manage)(struct dentry *, bool); } ____cacheline_aligned; /* @@ -214,8 +215,9 @@ struct dentry_operations { #define DCACHE_MOUNTED 0x10000 /* is a mountpoint */ #define DCACHE_NEED_AUTOMOUNT 0x20000 /* handle automount on this dir */ +#define DCACHE_MANAGE_TRANSIT 0x40000 /* manage transit from this dirent */ #define DCACHE_MANAGED_DENTRY \ - (DCACHE_MOUNTED|DCACHE_NEED_AUTOMOUNT) + (DCACHE_MOUNTED|DCACHE_NEED_AUTOMOUNT|DCACHE_MANAGE_TRANSIT) extern seqlock_t rename_lock; @@ -404,7 +406,12 @@ static inline void dont_mount(struct dentry *dentry) extern void dput(struct dentry *); -static inline int d_mountpoint(struct dentry *dentry) +static inline bool d_managed(struct dentry *dentry) +{ + return dentry->d_flags & DCACHE_MANAGED_DENTRY; +} + +static inline bool d_mountpoint(struct dentry *dentry) { return dentry->d_flags & DCACHE_MOUNTED; } diff --git a/include/linux/namei.h b/include/linux/namei.h index 18d06add0a40..8ef2c789c2a8 100644 --- a/include/linux/namei.h +++ b/include/linux/namei.h @@ -79,7 +79,8 @@ extern struct file *lookup_instantiate_filp(struct nameidata *nd, struct dentry extern struct dentry *lookup_one_len(const char *, struct dentry *, int); -extern int follow_down(struct path *); +extern int follow_down_one(struct path *); +extern int follow_down(struct path *, bool); extern int follow_up(struct path *); extern struct dentry *lock_rename(struct dentry *, struct dentry *); -- cgit v1.2.3 From 6f45b65672c8017d5e210e338bb5858a938ef445 Mon Sep 17 00:00:00 2001 From: David Howells Date: Fri, 14 Jan 2011 18:45:31 +0000 Subject: Add an AT_NO_AUTOMOUNT flag to suppress terminal automount Add an AT_NO_AUTOMOUNT flag to suppress terminal automounting of automount point directories. This can be used by fstatat() users to permit the gathering of attributes on an automount point and also prevent mass-automounting of a directory of automount points by ls. Signed-off-by: David Howells Acked-by: Ian Kent Signed-off-by: Al Viro --- include/linux/fcntl.h | 1 + include/linux/namei.h | 2 ++ 2 files changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/fcntl.h b/include/linux/fcntl.h index afc00af3229b..a562fa5fb4e3 100644 --- a/include/linux/fcntl.h +++ b/include/linux/fcntl.h @@ -45,6 +45,7 @@ #define AT_REMOVEDIR 0x200 /* Remove directory instead of unlinking file. */ #define AT_SYMLINK_FOLLOW 0x400 /* Follow symbolic links. */ +#define AT_NO_AUTOMOUNT 0x800 /* Suppress terminal automount traversal */ #ifdef __KERNEL__ diff --git a/include/linux/namei.h b/include/linux/namei.h index 8ef2c789c2a8..f276d4fa01fc 100644 --- a/include/linux/namei.h +++ b/include/linux/namei.h @@ -45,6 +45,7 @@ enum {LAST_NORM, LAST_ROOT, LAST_DOT, LAST_DOTDOT, LAST_BIND}; * - ending slashes ok even for nonexistent files * - internal "there are more path components" flag * - dentry cache is untrusted; force a real lookup + * - suppress terminal automount */ #define LOOKUP_FOLLOW 0x0001 #define LOOKUP_DIRECTORY 0x0002 @@ -53,6 +54,7 @@ enum {LAST_NORM, LAST_ROOT, LAST_DOT, LAST_DOTDOT, LAST_BIND}; #define LOOKUP_PARENT 0x0010 #define LOOKUP_REVAL 0x0020 #define LOOKUP_RCU 0x0040 +#define LOOKUP_NO_AUTOMOUNT 0x0080 /* * Intent data */ -- cgit v1.2.3 From 36d43a43761b004ad1879ac21471d8fc5f3157ec Mon Sep 17 00:00:00 2001 From: David Howells Date: Fri, 14 Jan 2011 18:45:42 +0000 Subject: NFS: Use d_automount() rather than abusing follow_link() Make NFS use the new d_automount() dentry operation rather than abusing follow_link() on directories. Signed-off-by: David Howells Acked-by: Trond Myklebust Acked-by: Ian Kent Signed-off-by: Al Viro --- include/linux/nfs_fs.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h index 0779bb8f95be..6023efa9f5d9 100644 --- a/include/linux/nfs_fs.h +++ b/include/linux/nfs_fs.h @@ -215,7 +215,6 @@ struct nfs_inode { #define NFS_INO_ADVISE_RDPLUS (0) /* advise readdirplus */ #define NFS_INO_STALE (1) /* possible stale inode */ #define NFS_INO_ACL_LRU_SET (2) /* Inode is on the LRU list */ -#define NFS_INO_MOUNTPOINT (3) /* inode is remote mountpoint */ #define NFS_INO_FLUSHING (4) /* inode is flushing out data */ #define NFS_INO_FSCACHE (5) /* inode can be cached by FS-Cache */ #define NFS_INO_FSCACHE_LOCK (6) /* FS-Cache cookie management lock */ -- cgit v1.2.3 From 1972580bb4edea3ed6fe273b2ca72f44f10f8c86 Mon Sep 17 00:00:00 2001 From: Ian Kent Date: Fri, 14 Jan 2011 18:46:40 +0000 Subject: autofs4: Bump version Increase the autofs module sub-version so we can tell what kernel implementation is being used from user space debug logging. Signed-off-by: Ian Kent Signed-off-by: David Howells Signed-off-by: Al Viro --- include/linux/auto_fs4.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/auto_fs4.h b/include/linux/auto_fs4.h index 8b49ac48a5b7..e02982fa2953 100644 --- a/include/linux/auto_fs4.h +++ b/include/linux/auto_fs4.h @@ -24,7 +24,7 @@ #define AUTOFS_MIN_PROTO_VERSION 3 #define AUTOFS_MAX_PROTO_VERSION 5 -#define AUTOFS_PROTO_SUBVERSION 1 +#define AUTOFS_PROTO_SUBVERSION 2 /* Mask for expire behaviour */ #define AUTOFS_EXP_IMMEDIATE 1 -- cgit v1.2.3 From ab90911ff90cdab59b31c045c3f0ae480d14f29d Mon Sep 17 00:00:00 2001 From: David Howells Date: Fri, 14 Jan 2011 18:46:51 +0000 Subject: Allow d_manage() to be used in RCU-walk mode Allow d_manage() to be called from pathwalk when it is in RCU-walk mode as well as when it is in Ref-walk mode. This permits __follow_mount_rcu() to call d_manage() directly. d_manage() needs a parameter to indicate that it is in RCU-walk mode as it isn't allowed to sleep if in that mode (but should return -ECHILD instead). autofs4_d_manage() can then be set to retain RCU-walk mode if the daemon accesses it and otherwise request dropping back to ref-walk mode. Signed-off-by: David Howells Signed-off-by: Al Viro --- include/linux/dcache.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/dcache.h b/include/linux/dcache.h index 1a87760d6532..f958c19e3ca5 100644 --- a/include/linux/dcache.h +++ b/include/linux/dcache.h @@ -168,7 +168,7 @@ struct dentry_operations { void (*d_iput)(struct dentry *, struct inode *); char *(*d_dname)(struct dentry *, char *, int); struct vfsmount *(*d_automount)(struct path *); - int (*d_manage)(struct dentry *, bool); + int (*d_manage)(struct dentry *, bool, bool); } ____cacheline_aligned; /* -- cgit v1.2.3 From ea5b778a8b98c85a87d66bf844904f9c3802b869 Mon Sep 17 00:00:00 2001 From: David Howells Date: Fri, 14 Jan 2011 19:10:03 +0000 Subject: Unexport do_add_mount() and add in follow_automount(), not ->d_automount() Unexport do_add_mount() and make ->d_automount() return the vfsmount to be added rather than calling do_add_mount() itself. follow_automount() will then do the addition. This slightly complicates things as ->d_automount() normally wants to add the new vfsmount to an expiration list and start an expiration timer. The problem with that is that the vfsmount will be deleted if it has a refcount of 1 and the timer will not repeat if the expiration list is empty. To this end, we require the vfsmount to be returned from d_automount() with a refcount of (at least) 2. One of these refs will be dropped unconditionally. In addition, follow_automount() must get a 3rd ref around the call to do_add_mount() lest it eat a ref and return an error, leaving the mount we have open to being expired as we would otherwise have only 1 ref on it. d_automount() should also add the the vfsmount to the expiration list (by calling mnt_set_expiry()) and start the expiration timer before returning, if this mechanism is to be used. The vfsmount will be unlinked from the expiration list by follow_automount() if do_add_mount() fails. This patch also fixes the call to do_add_mount() for AFS to propagate the mount flags from the parent vfsmount. Signed-off-by: David Howells Signed-off-by: Al Viro --- include/linux/mount.h | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mount.h b/include/linux/mount.h index 1869ea24a739..af4765ea8fde 100644 --- a/include/linux/mount.h +++ b/include/linux/mount.h @@ -110,12 +110,7 @@ extern struct vfsmount *vfs_kern_mount(struct file_system_type *type, int flags, const char *name, void *data); -struct nameidata; - -struct path; -extern int do_add_mount(struct vfsmount *newmnt, struct path *path, - int mnt_flags, struct list_head *fslist); - +extern void mnt_set_expiry(struct vfsmount *mnt, struct list_head *expiry_list); extern void mark_mounts_for_expiry(struct list_head *mounts); extern dev_t name_to_dev_t(char *name); -- cgit v1.2.3 From 672c54466d24994eb9633f993862c89539504a42 Mon Sep 17 00:00:00 2001 From: Grant Likely Date: Thu, 13 Jan 2011 15:36:09 -0700 Subject: dt/flattree: Return virtual address from early_init_dt_alloc_memory_arch() The physical address is never used by the device tree code when allocating memory for unflattening. Change the architecture's alloc hook to return the virutal address instead. Signed-off-by: Grant Likely --- include/linux/of_fdt.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/of_fdt.h b/include/linux/of_fdt.h index 0ef22a1f129e..c84d900fbbb3 100644 --- a/include/linux/of_fdt.h +++ b/include/linux/of_fdt.h @@ -97,7 +97,7 @@ extern void early_init_dt_check_for_initrd(unsigned long node); extern int early_init_dt_scan_memory(unsigned long node, const char *uname, int depth, void *data); extern void early_init_dt_add_memory_arch(u64 base, u64 size); -extern u64 early_init_dt_alloc_memory_arch(u64 size, u64 align); +extern void * early_init_dt_alloc_memory_arch(u64 size, u64 align); extern u64 dt_mem_next_cell(int s, __be32 **cellp); /* -- cgit v1.2.3 From 43f393caec0362abe03c72799d3f342af3973070 Mon Sep 17 00:00:00 2001 From: Thomas Graf Date: Sun, 16 Jan 2011 18:10:28 +0100 Subject: netfilter: audit target to record accepted/dropped packets This patch adds a new netfilter target which creates audit records for packets traversing a certain chain. It can be used to record packets which are rejected administraively as follows: -N AUDIT_DROP -A AUDIT_DROP -j AUDIT --type DROP -A AUDIT_DROP -j DROP a rule which would typically drop or reject a packet would then invoke the new chain to record packets before dropping them. -j AUDIT_DROP The module is protocol independant and works for iptables, ip6tables and ebtables. The following information is logged: - netfilter hook - packet length - incomming/outgoing interface - MAC src/dst/proto for ethernet packets - src/dst/protocol address for IPv4/IPv6 - src/dst port for TCP/UDP/UDPLITE - icmp type/code Cc: Patrick McHardy Cc: Eric Paris Cc: Al Viro Signed-off-by: Thomas Graf Signed-off-by: Patrick McHardy --- include/linux/audit.h | 1 + include/linux/netfilter/Kbuild | 1 + include/linux/netfilter/xt_AUDIT.h | 30 ++++++++++++++++++++++++++++++ 3 files changed, 32 insertions(+) create mode 100644 include/linux/netfilter/xt_AUDIT.h (limited to 'include/linux') diff --git a/include/linux/audit.h b/include/linux/audit.h index 8b5c0620abf9..ae227dfcf9c6 100644 --- a/include/linux/audit.h +++ b/include/linux/audit.h @@ -103,6 +103,7 @@ #define AUDIT_BPRM_FCAPS 1321 /* Information about fcaps increasing perms */ #define AUDIT_CAPSET 1322 /* Record showing argument to sys_capset */ #define AUDIT_MMAP 1323 /* Record showing descriptor and flags in mmap */ +#define AUDIT_NETFILTER_PKT 1324 /* Packets traversing netfilter chains */ #define AUDIT_AVC 1400 /* SE Linux avc denial or grant */ #define AUDIT_SELINUX_ERR 1401 /* Internal SE Linux Errors */ diff --git a/include/linux/netfilter/Kbuild b/include/linux/netfilter/Kbuild index 9d40effe7ca7..9f11fbc377e2 100644 --- a/include/linux/netfilter/Kbuild +++ b/include/linux/netfilter/Kbuild @@ -9,6 +9,7 @@ header-y += nfnetlink_conntrack.h header-y += nfnetlink_log.h header-y += nfnetlink_queue.h header-y += x_tables.h +header-y += xt_AUDIT.h header-y += xt_CHECKSUM.h header-y += xt_CLASSIFY.h header-y += xt_CONNMARK.h diff --git a/include/linux/netfilter/xt_AUDIT.h b/include/linux/netfilter/xt_AUDIT.h new file mode 100644 index 000000000000..38751d2ea52b --- /dev/null +++ b/include/linux/netfilter/xt_AUDIT.h @@ -0,0 +1,30 @@ +/* + * Header file for iptables xt_AUDIT target + * + * (C) 2010-2011 Thomas Graf + * (C) 2010-2011 Red Hat, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef _XT_AUDIT_TARGET_H +#define _XT_AUDIT_TARGET_H + +#include + +enum { + XT_AUDIT_TYPE_ACCEPT = 0, + XT_AUDIT_TYPE_DROP, + XT_AUDIT_TYPE_REJECT, + __XT_AUDIT_TYPE_MAX, +}; + +#define XT_AUDIT_TYPE_MAX (__XT_AUDIT_TYPE_MAX - 1) + +struct xt_audit_info { + __u8 type; /* XT_AUDIT_TYPE_* */ +}; + +#endif /* _XT_AUDIT_TARGET_H */ -- cgit v1.2.3 From fbabf31e4d482149b5e2704eb0287cf9117bdcf3 Mon Sep 17 00:00:00 2001 From: Thomas Graf Date: Sun, 16 Jan 2011 18:12:59 +0100 Subject: netfilter: create audit records for x_tables replaces The setsockopt() syscall to replace tables is already recorded in the audit logs. This patch stores additional information such as table name and netfilter protocol. Cc: Patrick McHardy Cc: Eric Paris Cc: Al Viro Signed-off-by: Thomas Graf Signed-off-by: Patrick McHardy --- include/linux/audit.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/audit.h b/include/linux/audit.h index ae227dfcf9c6..32b5c62a5042 100644 --- a/include/linux/audit.h +++ b/include/linux/audit.h @@ -104,6 +104,7 @@ #define AUDIT_CAPSET 1322 /* Record showing argument to sys_capset */ #define AUDIT_MMAP 1323 /* Record showing descriptor and flags in mmap */ #define AUDIT_NETFILTER_PKT 1324 /* Packets traversing netfilter chains */ +#define AUDIT_NETFILTER_CFG 1325 /* Netfilter chain modifications */ #define AUDIT_AVC 1400 /* SE Linux avc denial or grant */ #define AUDIT_SELINUX_ERR 1401 /* Internal SE Linux Errors */ -- cgit v1.2.3 From f03c65993b98eeb909a4012ce7833c5857d74755 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Fri, 14 Jan 2011 22:30:21 -0500 Subject: sanitize vfsmount refcounting changes Instead of splitting refcount between (per-cpu) mnt_count and (SMP-only) mnt_longrefs, make all references contribute to mnt_count again and keep track of how many are longterm ones. Accounting rules for longterm count: * 1 for each fs_struct.root.mnt * 1 for each fs_struct.pwd.mnt * 1 for having non-NULL ->mnt_ns * decrement to 0 happens only under vfsmount lock exclusive That allows nice common case for mntput() - since we can't drop the final reference until after mnt_longterm has reached 0 due to the rules above, mntput() can grab vfsmount lock shared and check mnt_longterm. If it turns out to be non-zero (which is the common case), we know that this is not the final mntput() and can just blindly decrement percpu mnt_count. Otherwise we grab vfsmount lock exclusive and do usual decrement-and-check of percpu mnt_count. For fs_struct.c we have mnt_make_longterm() and mnt_make_shortterm(); namespace.c uses the latter in places where we don't already hold vfsmount lock exclusive and opencodes a few remaining spots where we need to manipulate mnt_longterm. Note that we mostly revert the code outside of fs/namespace.c back to what we used to have; in particular, normal code doesn't need to care about two kinds of references, etc. And we get to keep the optimization Nick's variant had bought us... Signed-off-by: Al Viro --- include/linux/mount.h | 4 +--- include/linux/path.h | 2 -- 2 files changed, 1 insertion(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mount.h b/include/linux/mount.h index af4765ea8fde..604f122a2326 100644 --- a/include/linux/mount.h +++ b/include/linux/mount.h @@ -60,7 +60,7 @@ struct vfsmount { struct super_block *mnt_sb; /* pointer to superblock */ #ifdef CONFIG_SMP struct mnt_pcp __percpu *mnt_pcp; - atomic_t mnt_longrefs; + atomic_t mnt_longterm; /* how many of the refs are longterm */ #else int mnt_count; int mnt_writers; @@ -96,8 +96,6 @@ extern int mnt_clone_write(struct vfsmount *mnt); extern void mnt_drop_write(struct vfsmount *mnt); extern void mntput(struct vfsmount *mnt); extern struct vfsmount *mntget(struct vfsmount *mnt); -extern void mntput_long(struct vfsmount *mnt); -extern struct vfsmount *mntget_long(struct vfsmount *mnt); extern void mnt_pin(struct vfsmount *mnt); extern void mnt_unpin(struct vfsmount *mnt); extern int __mnt_is_readonly(struct vfsmount *mnt); diff --git a/include/linux/path.h b/include/linux/path.h index a581e8c06533..edc98dec6266 100644 --- a/include/linux/path.h +++ b/include/linux/path.h @@ -10,9 +10,7 @@ struct path { }; extern void path_get(struct path *); -extern void path_get_long(struct path *); extern void path_put(struct path *); -extern void path_put_long(struct path *); static inline int path_equal(const struct path *path1, const struct path *path2) { -- cgit v1.2.3 From fc8fe1e992ae0326a88edbe4d6793e840bbdd4ff Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Sun, 16 Jan 2011 20:42:43 +0100 Subject: PCI / ACPI: Fix build of the AER driver for CONFIG_ACPI unset After commit 415e12b23792 ("PCI/ACPI: Request _OSC control once for each root bridge (v3)") include/linux/pci-acpi.h is included by drivers/pci/pcie/aer/aerdrv.c and if CONFIG_ACPI is unset, the bogus and unnecessary alternative definition of acpi_find_root_bridge_handle() causes a build error to occur. Remove the offending piece of garbage. Reported-and-tested-by: Stephen Rothwell Signed-off-by: Rafael J. Wysocki Signed-off-by: Linus Torvalds --- include/linux/pci-acpi.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/pci-acpi.h b/include/linux/pci-acpi.h index 479d9bb88e11..44623500f419 100644 --- a/include/linux/pci-acpi.h +++ b/include/linux/pci-acpi.h @@ -35,9 +35,6 @@ static inline acpi_handle acpi_pci_get_bridge_handle(struct pci_bus *pbus) return acpi_get_pci_rootbridge_handle(pci_domain_nr(pbus), pbus->number); } -#else -static inline acpi_handle acpi_find_root_bridge_handle(struct pci_dev *pdev) -{ return NULL; } #endif #ifdef CONFIG_ACPI_APEI -- cgit v1.2.3 From 94ae85220a07d357d4937086c490854f63344de4 Mon Sep 17 00:00:00 2001 From: Russell King - ARM Linux Date: Sun, 16 Jan 2011 20:18:05 +0000 Subject: ARM: PL08x: cleanup comments Cleanup the formatting of comments, remove some which don't make sense anymore. Signed-off-by: Russell King [fix conflict with 96a608a4] Signed-off-by: Dan Williams --- include/linux/amba/pl08x.h | 43 ++++++++++++++++++++----------------------- 1 file changed, 20 insertions(+), 23 deletions(-) (limited to 'include/linux') diff --git a/include/linux/amba/pl08x.h b/include/linux/amba/pl08x.h index 5b87b6aac3f8..3111385b8ca7 100644 --- a/include/linux/amba/pl08x.h +++ b/include/linux/amba/pl08x.h @@ -12,7 +12,6 @@ * * Please credit ARM.com * Documentation: ARM DDI 0196D - * */ #ifndef AMBA_PL08X_H @@ -55,8 +54,8 @@ enum { * @circular_buffer: whether the buffer passed in is circular and * shall simply be looped round round (like a record baby round * round round round) - * @single: the device connected to this channel will request single - * DMA transfers, not bursts. (Bursts are default.) + * @single: the device connected to this channel will request single DMA + * transfers, not bursts. (Bursts are default.) * @periph_buses: the device connected to this channel is accessible via * these buses (use PL08X_AHB1 | PL08X_AHB2). */ @@ -78,8 +77,7 @@ struct pl08x_channel_data { * @addr: current address * @maxwidth: the maximum width of a transfer on this bus * @buswidth: the width of this bus in bytes: 1, 2 or 4 - * @fill_bytes: bytes required to fill to the next bus memory - * boundary + * @fill_bytes: bytes required to fill to the next bus memory boundary */ struct pl08x_bus_data { dma_addr_t addr; @@ -92,10 +90,10 @@ struct pl08x_bus_data { * struct pl08x_phy_chan - holder for the physical channels * @id: physical index to this channel * @lock: a lock to use when altering an instance of this struct - * @signal: the physical signal (aka channel) serving this - * physical channel right now - * @serving: the virtual channel currently being served by this - * physical channel + * @signal: the physical signal (aka channel) serving this physical channel + * right now + * @serving: the virtual channel currently being served by this physical + * channel */ struct pl08x_phy_chan { unsigned int id; @@ -119,7 +117,6 @@ struct pl08x_txd { size_t len; dma_addr_t llis_bus; struct pl08x_lli *llis_va; - bool active; /* Default cctl value for LLIs */ u32 cctl; /* @@ -130,8 +127,8 @@ struct pl08x_txd { }; /** - * struct pl08x_dma_chan_state - holds the PL08x specific virtual - * channel states + * struct pl08x_dma_chan_state - holds the PL08x specific virtual channel + * states * @PL08X_CHAN_IDLE: the channel is idle * @PL08X_CHAN_RUNNING: the channel has allocated a physical transport * channel and is running a transfer on it @@ -152,7 +149,7 @@ enum pl08x_dma_chan_state { * @chan: wrappped abstract channel * @phychan: the physical channel utilized by this channel, if there is one * @phychan_hold: if non-zero, hold on to the physical channel even if we - * have no pending entries + * have no pending entries * @tasklet: tasklet scheduled by the IRQ to handle actual work etc * @name: name of channel * @cd: channel platform data @@ -166,8 +163,8 @@ enum pl08x_dma_chan_state { * @host: a pointer to the host (internal use) * @state: whether the channel is idle, paused, running etc * @slave: whether this channel is a device (slave) or for memcpy - * @waiting: a TX descriptor on this channel which is waiting for - * a physical channel to become available + * @waiting: a TX descriptor on this channel which is waiting for a physical + * channel to become available */ struct pl08x_dma_chan { struct dma_chan chan; @@ -189,16 +186,16 @@ struct pl08x_dma_chan { }; /** - * struct pl08x_platform_data - the platform configuration for the - * PL08x PrimeCells. + * struct pl08x_platform_data - the platform configuration for the PL08x + * PrimeCells. * @slave_channels: the channels defined for the different devices on the * platform, all inclusive, including multiplexed channels. The available - * physical channels will be multiplexed around these signals as they - * are requested, just enumerate all possible channels. - * @get_signal: request a physical signal to be used for a DMA - * transfer immediately: if there is some multiplexing or similar blocking - * the use of the channel the transfer can be denied by returning - * less than zero, else it returns the allocated signal number + * physical channels will be multiplexed around these signals as they are + * requested, just enumerate all possible channels. + * @get_signal: request a physical signal to be used for a DMA transfer + * immediately: if there is some multiplexing or similar blocking the use + * of the channel the transfer can be denied by returning less than zero, + * else it returns the allocated signal number * @put_signal: indicate to the platform that this physical signal is not * running any DMA transfer and multiplexing can be recycled * @lli_buses: buses which LLIs can be fetched from: PL08X_AHB1 | PL08X_AHB2 -- cgit v1.2.3 From 2fe17c1075836b66678ed2a305fd09b6773883aa Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Fri, 14 Jan 2011 13:07:43 +0100 Subject: fallocate should be a file operation Currently all filesystems except XFS implement fallocate asynchronously, while XFS forced a commit. Both of these are suboptimal - in case of O_SYNC I/O we really want our allocation on disk, especially for the !KEEP_SIZE case where we actually grow the file with user-visible zeroes. On the other hand always commiting the transaction is a bad idea for fast-path uses of fallocate like for example in recent Samba versions. Given that block allocation is a data plane operation anyway change it from an inode operation to a file operation so that we have the file structure available that lets us check for O_SYNC. This also includes moving the code around for a few of the filesystems, and remove the already unnedded S_ISDIR checks given that we only wire up fallocate for regular files. Signed-off-by: Christoph Hellwig Signed-off-by: Al Viro --- include/linux/fs.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index 177b4ddea418..09b5bd6a7c6b 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1552,6 +1552,8 @@ struct file_operations { ssize_t (*splice_write)(struct pipe_inode_info *, struct file *, loff_t *, size_t, unsigned int); ssize_t (*splice_read)(struct file *, loff_t *, struct pipe_inode_info *, size_t, unsigned int); int (*setlease)(struct file *, long, struct file_lock **); + long (*fallocate)(struct file *file, int mode, loff_t offset, + loff_t len); }; #define IPERM_FLAG_RCU 0x0001 @@ -1582,8 +1584,6 @@ struct inode_operations { ssize_t (*listxattr) (struct dentry *, char *, size_t); int (*removexattr) (struct dentry *, const char *); void (*truncate_range)(struct inode *, loff_t, loff_t); - long (*fallocate)(struct inode *inode, int mode, loff_t offset, - loff_t len); int (*fiemap)(struct inode *, struct fiemap_extent_info *, u64 start, u64 len); } ____cacheline_aligned; -- cgit v1.2.3 From c2b3e74b78b24cb367289a75a2bd30e569e56e0e Mon Sep 17 00:00:00 2001 From: Steven Rostedt Date: Mon, 13 Dec 2010 19:38:08 -0500 Subject: fs: Remove unlikely() from fput_light() In fput_light(), there's an unlikely(fput_needed), which running on my normal desktop doing firefox, xchat, evolution and part of my distcc farm, and running the annotate branch profiler shows that the unlikely is not very unlikely. correct incorrect % Function File Line ------- --------- - -------- ---- ---- 0 48 100 fput_light file.h 26 115828710 897415279 88 fput_light file.h 26 865271179 5286128445 85 fput_light file.h 26 19568539 8923664 31 fput_light file.h 26 12353677 3562279 22 fput_light file.h 26 267691 67062 20 fput_light file.h 26 15014853 348172 2 fput_light file.h 26 209258 205 0 fput_light file.h 26 1364164 0 0 fput_light file.h 26 Which gives 1032903812 times it was correct and 6203351846 times it was incorrect, or 85% incorrect. Cc: Andrew Morton Signed-off-by: Steven Rostedt Signed-off-by: Al Viro --- include/linux/file.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/file.h b/include/linux/file.h index b1e12970f617..e85baebf6279 100644 --- a/include/linux/file.h +++ b/include/linux/file.h @@ -23,7 +23,7 @@ extern struct file *alloc_file(struct path *, fmode_t mode, static inline void fput_light(struct file *file, int fput_needed) { - if (unlikely(fput_needed)) + if (fput_needed) fput(file); } -- cgit v1.2.3 From ecf5632dd189ab4c366cef853d6e5fe7adfe52e5 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Sun, 16 Jan 2011 23:28:17 +0900 Subject: fs: fix address space warnings in ioctl_fiemap() The fi_extents_start field of struct fiemap_extent_info is a user pointer but was not marked as __user. This makes sparse emit following warnings: CHECK fs/ioctl.c fs/ioctl.c:114:26: warning: incorrect type in argument 1 (different address spaces) fs/ioctl.c:114:26: expected void [noderef] *dst fs/ioctl.c:114:26: got struct fiemap_extent *[assigned] dest fs/ioctl.c:202:14: warning: incorrect type in argument 1 (different address spaces) fs/ioctl.c:202:14: expected void const volatile [noderef] * fs/ioctl.c:202:14: got struct fiemap_extent *[assigned] fi_extents_start fs/ioctl.c:212:27: warning: incorrect type in argument 1 (different address spaces) fs/ioctl.c:212:27: expected void [noderef] *dst fs/ioctl.c:212:27: got char * Also add 'ufiemap' variable to eliminate unnecessary casts. Signed-off-by: Namhyung Kim Signed-off-by: Al Viro --- include/linux/fs.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index 09b5bd6a7c6b..32b38cd829d3 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1483,8 +1483,8 @@ struct fiemap_extent_info { unsigned int fi_flags; /* Flags as passed from user */ unsigned int fi_extents_mapped; /* Number of mapped extents */ unsigned int fi_extents_max; /* Size of fiemap_extent array */ - struct fiemap_extent *fi_extents_start; /* Start of fiemap_extent - * array */ + struct fiemap_extent __user *fi_extents_start; /* Start of + fiemap_extent array */ }; int fiemap_fill_next_extent(struct fiemap_extent_info *info, u64 logical, u64 phys, u64 len, u32 flags); -- cgit v1.2.3 From 7898e1f8e9eb1bee88c92d636e0ab93f2cbe31c6 Mon Sep 17 00:00:00 2001 From: Casey Schaufler Date: Mon, 17 Jan 2011 08:05:27 -0800 Subject: Subject: [PATCH] Smack: mmap controls for library containment In the embedded world there are often situations where libraries are updated from a variety of sources, for a variety of reasons, and with any number of security characteristics. These differences might include privilege required for a given library provided interface to function properly, as occurs from time to time in graphics libraries. There are also cases where it is important to limit use of libraries based on the provider of the library and the security aware application may make choices based on that criteria. These issues are addressed by providing an additional Smack label that may optionally be assigned to an object, the SMACK64MMAP attribute. An mmap operation is allowed if there is no such attribute. If there is a SMACK64MMAP attribute the mmap is permitted only if a subject with that label has all of the access permitted a subject with the current task label. Security aware applications may from time to time wish to reduce their "privilege" to avoid accidental use of privilege. One case where this arises is the environment in which multiple sources provide libraries to perform the same functions. An application may know that it should eschew services made available from a particular vendor, or of a particular version. In support of this a secondary list of Smack rules has been added that is local to the task. This list is consulted only in the case where the global list has approved access. It can only further restrict access. Unlike the global last, if no entry is found on the local list access is granted. An application can add entries to its own list by writing to /smack/load-self. The changes appear large as they involve refactoring the list handling to accomodate there being more than one rule list. Signed-off-by: Casey Schaufler --- include/linux/xattr.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/xattr.h b/include/linux/xattr.h index e6131ef98d8f..6050783005bd 100644 --- a/include/linux/xattr.h +++ b/include/linux/xattr.h @@ -42,11 +42,13 @@ #define XATTR_SMACK_IPOUT "SMACK64IPOUT" #define XATTR_SMACK_EXEC "SMACK64EXEC" #define XATTR_SMACK_TRANSMUTE "SMACK64TRANSMUTE" +#define XATTR_SMACK_MMAP "SMACK64MMAP" #define XATTR_NAME_SMACK XATTR_SECURITY_PREFIX XATTR_SMACK_SUFFIX #define XATTR_NAME_SMACKIPIN XATTR_SECURITY_PREFIX XATTR_SMACK_IPIN #define XATTR_NAME_SMACKIPOUT XATTR_SECURITY_PREFIX XATTR_SMACK_IPOUT #define XATTR_NAME_SMACKEXEC XATTR_SECURITY_PREFIX XATTR_SMACK_EXEC #define XATTR_NAME_SMACKTRANSMUTE XATTR_SECURITY_PREFIX XATTR_SMACK_TRANSMUTE +#define XATTR_NAME_SMACKMMAP XATTR_SECURITY_PREFIX XATTR_SMACK_MMAP #define XATTR_CAPS_SUFFIX "capability" #define XATTR_NAME_CAPS XATTR_SECURITY_PREFIX XATTR_CAPS_SUFFIX -- cgit v1.2.3 From 2a8652f4e0d11ee27b1d2870c600fd1300661a6e Mon Sep 17 00:00:00 2001 From: Roberto Sassu Date: Wed, 3 Nov 2010 11:11:15 +0100 Subject: ecryptfs: moved ECRYPTFS_SUPER_MAGIC definition to linux/magic.h The definition of ECRYPTFS_SUPER_MAGIC has been moved to the include file 'linux/magic.h' to become available to other kernel subsystems. Signed-off-by: Roberto Sassu Signed-off-by: Tyler Hicks --- include/linux/magic.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/magic.h b/include/linux/magic.h index ff690d05f129..62730ea2b56e 100644 --- a/include/linux/magic.h +++ b/include/linux/magic.h @@ -16,6 +16,7 @@ #define TMPFS_MAGIC 0x01021994 #define HUGETLBFS_MAGIC 0x958458f6 /* some random number */ #define SQUASHFS_MAGIC 0x73717368 +#define ECRYPTFS_SUPER_MAGIC 0xf15f #define EFS_SUPER_MAGIC 0x414A53 #define EXT2_SUPER_MAGIC 0xEF53 #define EXT3_SUPER_MAGIC 0xEF53 -- cgit v1.2.3 From d2763b4f44e16f44cc4156c9591e74df9dcd88be Mon Sep 17 00:00:00 2001 From: Naveen Kumar Gaddipati Date: Mon, 17 Jan 2011 20:40:58 -0800 Subject: Input: bu21013_ts - remove duplicate resolution parameters Remove duplicate display resolution parameters from platform data as one pair is quite enough. Signed-off-by: Naveen Kumar Gaddipati Signed-off-by: Dmitry Torokhov --- include/linux/input/bu21013.h | 4 ---- 1 file changed, 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/input/bu21013.h b/include/linux/input/bu21013.h index e470d387dd49..05e03284b92a 100644 --- a/include/linux/input/bu21013.h +++ b/include/linux/input/bu21013.h @@ -12,8 +12,6 @@ * @cs_en: pointer to the cs enable function * @cs_dis: pointer to the cs disable function * @irq_read_val: pointer to read the pen irq value function - * @x_max_res: xmax resolution - * @y_max_res: ymax resolution * @touch_x_max: touch x max * @touch_y_max: touch y max * @cs_pin: chip select pin @@ -29,8 +27,6 @@ struct bu21013_platform_device { int (*cs_en)(int reset_pin); int (*cs_dis)(int reset_pin); int (*irq_read_val)(void); - int x_max_res; - int y_max_res; int touch_x_max; int touch_y_max; unsigned int cs_pin; -- cgit v1.2.3 From 0260c1dccc6a1018f8cf2c4778dffb47fc5d1c4c Mon Sep 17 00:00:00 2001 From: Jan Engelhardt Date: Tue, 18 Jan 2011 07:33:09 +0100 Subject: netfilter: xtables: use __uXX guarded types for userspace exports Signed-off-by: Jan Engelhardt --- include/linux/netfilter_bridge/ebt_802_3.h | 24 ++++++++++++------------ include/linux/netfilter_bridge/ebt_among.h | 2 +- include/linux/netfilter_bridge/ebt_arp.h | 4 ++-- include/linux/netfilter_bridge/ebt_ip.h | 12 ++++++------ include/linux/netfilter_bridge/ebt_ip6.h | 16 ++++++++-------- include/linux/netfilter_bridge/ebt_limit.h | 8 ++++---- include/linux/netfilter_bridge/ebt_log.h | 6 +++--- include/linux/netfilter_bridge/ebt_mark_m.h | 4 ++-- include/linux/netfilter_bridge/ebt_nflog.h | 10 +++++----- include/linux/netfilter_bridge/ebt_pkttype.h | 4 ++-- include/linux/netfilter_bridge/ebt_stp.h | 24 ++++++++++++------------ include/linux/netfilter_bridge/ebt_ulog.h | 2 +- include/linux/netfilter_bridge/ebt_vlan.h | 8 ++++---- include/linux/netfilter_ipv4/ipt_CLUSTERIP.h | 14 +++++++------- include/linux/netfilter_ipv4/ipt_ECN.h | 6 +++--- include/linux/netfilter_ipv4/ipt_SAME.h | 6 +++--- include/linux/netfilter_ipv4/ipt_TTL.h | 4 ++-- include/linux/netfilter_ipv4/ipt_addrtype.h | 14 +++++++------- include/linux/netfilter_ipv4/ipt_ah.h | 4 ++-- include/linux/netfilter_ipv4/ipt_ecn.h | 8 ++++---- include/linux/netfilter_ipv4/ipt_ttl.h | 4 ++-- include/linux/netfilter_ipv6/ip6t_HL.h | 4 ++-- include/linux/netfilter_ipv6/ip6t_REJECT.h | 2 +- include/linux/netfilter_ipv6/ip6t_ah.h | 8 ++++---- include/linux/netfilter_ipv6/ip6t_frag.h | 8 ++++---- include/linux/netfilter_ipv6/ip6t_hl.h | 4 ++-- include/linux/netfilter_ipv6/ip6t_ipv6header.h | 6 +++--- include/linux/netfilter_ipv6/ip6t_mh.h | 4 ++-- include/linux/netfilter_ipv6/ip6t_opts.h | 10 +++++----- include/linux/netfilter_ipv6/ip6t_rt.h | 12 ++++++------ 30 files changed, 121 insertions(+), 121 deletions(-) (limited to 'include/linux') diff --git a/include/linux/netfilter_bridge/ebt_802_3.h b/include/linux/netfilter_bridge/ebt_802_3.h index c73ef0b18bdc..c427764f4444 100644 --- a/include/linux/netfilter_bridge/ebt_802_3.h +++ b/include/linux/netfilter_bridge/ebt_802_3.h @@ -24,24 +24,24 @@ /* ui has one byte ctrl, ni has two */ struct hdr_ui { - uint8_t dsap; - uint8_t ssap; - uint8_t ctrl; - uint8_t orig[3]; + __u8 dsap; + __u8 ssap; + __u8 ctrl; + __u8 orig[3]; __be16 type; }; struct hdr_ni { - uint8_t dsap; - uint8_t ssap; + __u8 dsap; + __u8 ssap; __be16 ctrl; - uint8_t orig[3]; + __u8 orig[3]; __be16 type; }; struct ebt_802_3_hdr { - uint8_t daddr[6]; - uint8_t saddr[6]; + __u8 daddr[6]; + __u8 saddr[6]; __be16 len; union { struct hdr_ui ui; @@ -59,10 +59,10 @@ static inline struct ebt_802_3_hdr *ebt_802_3_hdr(const struct sk_buff *skb) #endif struct ebt_802_3_info { - uint8_t sap; + __u8 sap; __be16 type; - uint8_t bitmask; - uint8_t invflags; + __u8 bitmask; + __u8 invflags; }; #endif diff --git a/include/linux/netfilter_bridge/ebt_among.h b/include/linux/netfilter_bridge/ebt_among.h index 0009558609a7..686c9619dbc0 100644 --- a/include/linux/netfilter_bridge/ebt_among.h +++ b/include/linux/netfilter_bridge/ebt_among.h @@ -30,7 +30,7 @@ */ struct ebt_mac_wormhash_tuple { - uint32_t cmp[2]; + __u32 cmp[2]; __be32 ip; }; diff --git a/include/linux/netfilter_bridge/ebt_arp.h b/include/linux/netfilter_bridge/ebt_arp.h index cbf4843b6b0f..e62b5af95869 100644 --- a/include/linux/netfilter_bridge/ebt_arp.h +++ b/include/linux/netfilter_bridge/ebt_arp.h @@ -27,8 +27,8 @@ struct ebt_arp_info unsigned char smmsk[ETH_ALEN]; unsigned char dmaddr[ETH_ALEN]; unsigned char dmmsk[ETH_ALEN]; - uint8_t bitmask; - uint8_t invflags; + __u8 bitmask; + __u8 invflags; }; #endif diff --git a/include/linux/netfilter_bridge/ebt_ip.h b/include/linux/netfilter_bridge/ebt_ip.h index 6a708fb92241..d99de58da2c7 100644 --- a/include/linux/netfilter_bridge/ebt_ip.h +++ b/include/linux/netfilter_bridge/ebt_ip.h @@ -31,12 +31,12 @@ struct ebt_ip_info { __be32 daddr; __be32 smsk; __be32 dmsk; - uint8_t tos; - uint8_t protocol; - uint8_t bitmask; - uint8_t invflags; - uint16_t sport[2]; - uint16_t dport[2]; + __u8 tos; + __u8 protocol; + __u8 bitmask; + __u8 invflags; + __u16 sport[2]; + __u16 dport[2]; }; #endif diff --git a/include/linux/netfilter_bridge/ebt_ip6.h b/include/linux/netfilter_bridge/ebt_ip6.h index 22af18a3c16b..998e9d5a6b60 100644 --- a/include/linux/netfilter_bridge/ebt_ip6.h +++ b/include/linux/netfilter_bridge/ebt_ip6.h @@ -31,17 +31,17 @@ struct ebt_ip6_info { struct in6_addr daddr; struct in6_addr smsk; struct in6_addr dmsk; - uint8_t tclass; - uint8_t protocol; - uint8_t bitmask; - uint8_t invflags; + __u8 tclass; + __u8 protocol; + __u8 bitmask; + __u8 invflags; union { - uint16_t sport[2]; - uint8_t icmpv6_type[2]; + __u16 sport[2]; + __u8 icmpv6_type[2]; }; union { - uint16_t dport[2]; - uint8_t icmpv6_code[2]; + __u16 dport[2]; + __u8 icmpv6_code[2]; }; }; diff --git a/include/linux/netfilter_bridge/ebt_limit.h b/include/linux/netfilter_bridge/ebt_limit.h index 4bf76b751676..721d51ffa513 100644 --- a/include/linux/netfilter_bridge/ebt_limit.h +++ b/include/linux/netfilter_bridge/ebt_limit.h @@ -10,13 +10,13 @@ seconds, or one every 59 hours. */ struct ebt_limit_info { - u_int32_t avg; /* Average secs between packets * scale */ - u_int32_t burst; /* Period multiplier for upper limit. */ + __u32 avg; /* Average secs between packets * scale */ + __u32 burst; /* Period multiplier for upper limit. */ /* Used internally by the kernel */ unsigned long prev; - u_int32_t credit; - u_int32_t credit_cap, cost; + __u32 credit; + __u32 credit_cap, cost; }; #endif diff --git a/include/linux/netfilter_bridge/ebt_log.h b/include/linux/netfilter_bridge/ebt_log.h index cc2cdfb764bc..564beb4946ea 100644 --- a/include/linux/netfilter_bridge/ebt_log.h +++ b/include/linux/netfilter_bridge/ebt_log.h @@ -10,9 +10,9 @@ #define EBT_LOG_WATCHER "log" struct ebt_log_info { - uint8_t loglevel; - uint8_t prefix[EBT_LOG_PREFIX_SIZE]; - uint32_t bitmask; + __u8 loglevel; + __u8 prefix[EBT_LOG_PREFIX_SIZE]; + __u32 bitmask; }; #endif diff --git a/include/linux/netfilter_bridge/ebt_mark_m.h b/include/linux/netfilter_bridge/ebt_mark_m.h index 9ceb10ec0ed6..97b96c4b8db4 100644 --- a/include/linux/netfilter_bridge/ebt_mark_m.h +++ b/include/linux/netfilter_bridge/ebt_mark_m.h @@ -6,8 +6,8 @@ #define EBT_MARK_MASK (EBT_MARK_AND | EBT_MARK_OR) struct ebt_mark_m_info { unsigned long mark, mask; - uint8_t invert; - uint8_t bitmask; + __u8 invert; + __u8 bitmask; }; #define EBT_MARK_MATCH "mark_m" diff --git a/include/linux/netfilter_bridge/ebt_nflog.h b/include/linux/netfilter_bridge/ebt_nflog.h index 052817849b83..477315bc3537 100644 --- a/include/linux/netfilter_bridge/ebt_nflog.h +++ b/include/linux/netfilter_bridge/ebt_nflog.h @@ -10,11 +10,11 @@ #define EBT_NFLOG_DEFAULT_THRESHOLD 1 struct ebt_nflog_info { - u_int32_t len; - u_int16_t group; - u_int16_t threshold; - u_int16_t flags; - u_int16_t pad; + __u32 len; + __u16 group; + __u16 threshold; + __u16 flags; + __u16 pad; char prefix[EBT_NFLOG_PREFIX_SIZE]; }; diff --git a/include/linux/netfilter_bridge/ebt_pkttype.h b/include/linux/netfilter_bridge/ebt_pkttype.h index 51a799840931..7c0fb0fdcf14 100644 --- a/include/linux/netfilter_bridge/ebt_pkttype.h +++ b/include/linux/netfilter_bridge/ebt_pkttype.h @@ -2,8 +2,8 @@ #define __LINUX_BRIDGE_EBT_PKTTYPE_H struct ebt_pkttype_info { - uint8_t pkt_type; - uint8_t invert; + __u8 pkt_type; + __u8 invert; }; #define EBT_PKTTYPE_MATCH "pkttype" diff --git a/include/linux/netfilter_bridge/ebt_stp.h b/include/linux/netfilter_bridge/ebt_stp.h index e503a0aa2728..13a0bd49a92a 100644 --- a/include/linux/netfilter_bridge/ebt_stp.h +++ b/include/linux/netfilter_bridge/ebt_stp.h @@ -21,24 +21,24 @@ #define EBT_STP_MATCH "stp" struct ebt_stp_config_info { - uint8_t flags; - uint16_t root_priol, root_priou; + __u8 flags; + __u16 root_priol, root_priou; char root_addr[6], root_addrmsk[6]; - uint32_t root_costl, root_costu; - uint16_t sender_priol, sender_priou; + __u32 root_costl, root_costu; + __u16 sender_priol, sender_priou; char sender_addr[6], sender_addrmsk[6]; - uint16_t portl, portu; - uint16_t msg_agel, msg_ageu; - uint16_t max_agel, max_ageu; - uint16_t hello_timel, hello_timeu; - uint16_t forward_delayl, forward_delayu; + __u16 portl, portu; + __u16 msg_agel, msg_ageu; + __u16 max_agel, max_ageu; + __u16 hello_timel, hello_timeu; + __u16 forward_delayl, forward_delayu; }; struct ebt_stp_info { - uint8_t type; + __u8 type; struct ebt_stp_config_info config; - uint16_t bitmask; - uint16_t invflags; + __u16 bitmask; + __u16 invflags; }; #endif diff --git a/include/linux/netfilter_bridge/ebt_ulog.h b/include/linux/netfilter_bridge/ebt_ulog.h index b677e2671541..de35a51a7e46 100644 --- a/include/linux/netfilter_bridge/ebt_ulog.h +++ b/include/linux/netfilter_bridge/ebt_ulog.h @@ -10,7 +10,7 @@ #define EBT_ULOG_VERSION 1 struct ebt_ulog_info { - uint32_t nlgroup; + __u32 nlgroup; unsigned int cprange; unsigned int qthreshold; char prefix[EBT_ULOG_PREFIX_LEN]; diff --git a/include/linux/netfilter_bridge/ebt_vlan.h b/include/linux/netfilter_bridge/ebt_vlan.h index 1d98be4031e7..48dffc1dad36 100644 --- a/include/linux/netfilter_bridge/ebt_vlan.h +++ b/include/linux/netfilter_bridge/ebt_vlan.h @@ -8,12 +8,12 @@ #define EBT_VLAN_MATCH "vlan" struct ebt_vlan_info { - uint16_t id; /* VLAN ID {1-4095} */ - uint8_t prio; /* VLAN User Priority {0-7} */ + __u16 id; /* VLAN ID {1-4095} */ + __u8 prio; /* VLAN User Priority {0-7} */ __be16 encap; /* VLAN Encapsulated frame code {0-65535} */ - uint8_t bitmask; /* Args bitmask bit 1=1 - ID arg, + __u8 bitmask; /* Args bitmask bit 1=1 - ID arg, bit 2=1 User-Priority arg, bit 3=1 encap*/ - uint8_t invflags; /* Inverse bitmask bit 1=1 - inversed ID arg, + __u8 invflags; /* Inverse bitmask bit 1=1 - inversed ID arg, bit 2=1 - inversed Pirority arg */ }; diff --git a/include/linux/netfilter_ipv4/ipt_CLUSTERIP.h b/include/linux/netfilter_ipv4/ipt_CLUSTERIP.h index e5a3687c8a72..3114f06939ef 100644 --- a/include/linux/netfilter_ipv4/ipt_CLUSTERIP.h +++ b/include/linux/netfilter_ipv4/ipt_CLUSTERIP.h @@ -17,15 +17,15 @@ struct clusterip_config; struct ipt_clusterip_tgt_info { - u_int32_t flags; + __u32 flags; /* only relevant for new ones */ - u_int8_t clustermac[6]; - u_int16_t num_total_nodes; - u_int16_t num_local_nodes; - u_int16_t local_nodes[CLUSTERIP_MAX_NODES]; - u_int32_t hash_mode; - u_int32_t hash_initval; + __u8 clustermac[6]; + __u16 num_total_nodes; + __u16 num_local_nodes; + __u16 local_nodes[CLUSTERIP_MAX_NODES]; + __u32 hash_mode; + __u32 hash_initval; /* Used internally by the kernel */ struct clusterip_config *config; diff --git a/include/linux/netfilter_ipv4/ipt_ECN.h b/include/linux/netfilter_ipv4/ipt_ECN.h index 7ca45918ab8e..c6e3e01b75e0 100644 --- a/include/linux/netfilter_ipv4/ipt_ECN.h +++ b/include/linux/netfilter_ipv4/ipt_ECN.h @@ -19,11 +19,11 @@ #define IPT_ECN_OP_MASK 0xce struct ipt_ECN_info { - u_int8_t operation; /* bitset of operations */ - u_int8_t ip_ect; /* ECT codepoint of IPv4 header, pre-shifted */ + __u8 operation; /* bitset of operations */ + __u8 ip_ect; /* ECT codepoint of IPv4 header, pre-shifted */ union { struct { - u_int8_t ece:1, cwr:1; /* TCP ECT bits */ + __u8 ece:1, cwr:1; /* TCP ECT bits */ } tcp; } proto; }; diff --git a/include/linux/netfilter_ipv4/ipt_SAME.h b/include/linux/netfilter_ipv4/ipt_SAME.h index 2529660c5b38..fa0ebeca5d95 100644 --- a/include/linux/netfilter_ipv4/ipt_SAME.h +++ b/include/linux/netfilter_ipv4/ipt_SAME.h @@ -7,9 +7,9 @@ struct ipt_same_info { unsigned char info; - u_int32_t rangesize; - u_int32_t ipnum; - u_int32_t *iparray; + __u32 rangesize; + __u32 ipnum; + __u32 *iparray; /* hangs off end. */ struct nf_nat_range range[IPT_SAME_MAX_RANGE]; diff --git a/include/linux/netfilter_ipv4/ipt_TTL.h b/include/linux/netfilter_ipv4/ipt_TTL.h index ee6611edc112..f6250e422d5e 100644 --- a/include/linux/netfilter_ipv4/ipt_TTL.h +++ b/include/linux/netfilter_ipv4/ipt_TTL.h @@ -13,8 +13,8 @@ enum { #define IPT_TTL_MAXMODE IPT_TTL_DEC struct ipt_TTL_info { - u_int8_t mode; - u_int8_t ttl; + __u8 mode; + __u8 ttl; }; diff --git a/include/linux/netfilter_ipv4/ipt_addrtype.h b/include/linux/netfilter_ipv4/ipt_addrtype.h index 446de6aef983..f29c3cfcc240 100644 --- a/include/linux/netfilter_ipv4/ipt_addrtype.h +++ b/include/linux/netfilter_ipv4/ipt_addrtype.h @@ -9,17 +9,17 @@ enum { }; struct ipt_addrtype_info_v1 { - u_int16_t source; /* source-type mask */ - u_int16_t dest; /* dest-type mask */ - u_int32_t flags; + __u16 source; /* source-type mask */ + __u16 dest; /* dest-type mask */ + __u32 flags; }; /* revision 0 */ struct ipt_addrtype_info { - u_int16_t source; /* source-type mask */ - u_int16_t dest; /* dest-type mask */ - u_int32_t invert_source; - u_int32_t invert_dest; + __u16 source; /* source-type mask */ + __u16 dest; /* dest-type mask */ + __u32 invert_source; + __u32 invert_dest; }; #endif diff --git a/include/linux/netfilter_ipv4/ipt_ah.h b/include/linux/netfilter_ipv4/ipt_ah.h index 2e555b4d05e3..8fea283ee62a 100644 --- a/include/linux/netfilter_ipv4/ipt_ah.h +++ b/include/linux/netfilter_ipv4/ipt_ah.h @@ -2,8 +2,8 @@ #define _IPT_AH_H struct ipt_ah { - u_int32_t spis[2]; /* Security Parameter Index */ - u_int8_t invflags; /* Inverse flags */ + __u32 spis[2]; /* Security Parameter Index */ + __u8 invflags; /* Inverse flags */ }; diff --git a/include/linux/netfilter_ipv4/ipt_ecn.h b/include/linux/netfilter_ipv4/ipt_ecn.h index 9945baa4ccd7..78b98aa8784d 100644 --- a/include/linux/netfilter_ipv4/ipt_ecn.h +++ b/include/linux/netfilter_ipv4/ipt_ecn.h @@ -20,12 +20,12 @@ /* match info */ struct ipt_ecn_info { - u_int8_t operation; - u_int8_t invert; - u_int8_t ip_ect; + __u8 operation; + __u8 invert; + __u8 ip_ect; union { struct { - u_int8_t ect; + __u8 ect; } tcp; } proto; }; diff --git a/include/linux/netfilter_ipv4/ipt_ttl.h b/include/linux/netfilter_ipv4/ipt_ttl.h index ee24fd86a3aa..93d9a06689a3 100644 --- a/include/linux/netfilter_ipv4/ipt_ttl.h +++ b/include/linux/netfilter_ipv4/ipt_ttl.h @@ -13,8 +13,8 @@ enum { struct ipt_ttl_info { - u_int8_t mode; - u_int8_t ttl; + __u8 mode; + __u8 ttl; }; diff --git a/include/linux/netfilter_ipv6/ip6t_HL.h b/include/linux/netfilter_ipv6/ip6t_HL.h index afb7813d45ab..81cdaf0480e3 100644 --- a/include/linux/netfilter_ipv6/ip6t_HL.h +++ b/include/linux/netfilter_ipv6/ip6t_HL.h @@ -14,8 +14,8 @@ enum { #define IP6T_HL_MAXMODE IP6T_HL_DEC struct ip6t_HL_info { - u_int8_t mode; - u_int8_t hop_limit; + __u8 mode; + __u8 hop_limit; }; diff --git a/include/linux/netfilter_ipv6/ip6t_REJECT.h b/include/linux/netfilter_ipv6/ip6t_REJECT.h index 6be6504162bb..b999aa4e5969 100644 --- a/include/linux/netfilter_ipv6/ip6t_REJECT.h +++ b/include/linux/netfilter_ipv6/ip6t_REJECT.h @@ -12,7 +12,7 @@ enum ip6t_reject_with { }; struct ip6t_reject_info { - u_int32_t with; /* reject type */ + __u32 with; /* reject type */ }; #endif /*_IP6T_REJECT_H*/ diff --git a/include/linux/netfilter_ipv6/ip6t_ah.h b/include/linux/netfilter_ipv6/ip6t_ah.h index 17a745cfb2c7..a602c165edd1 100644 --- a/include/linux/netfilter_ipv6/ip6t_ah.h +++ b/include/linux/netfilter_ipv6/ip6t_ah.h @@ -2,10 +2,10 @@ #define _IP6T_AH_H struct ip6t_ah { - u_int32_t spis[2]; /* Security Parameter Index */ - u_int32_t hdrlen; /* Header Length */ - u_int8_t hdrres; /* Test of the Reserved Filed */ - u_int8_t invflags; /* Inverse flags */ + __u32 spis[2]; /* Security Parameter Index */ + __u32 hdrlen; /* Header Length */ + __u8 hdrres; /* Test of the Reserved Filed */ + __u8 invflags; /* Inverse flags */ }; #define IP6T_AH_SPI 0x01 diff --git a/include/linux/netfilter_ipv6/ip6t_frag.h b/include/linux/netfilter_ipv6/ip6t_frag.h index 3724d0850920..538b31ef5e3d 100644 --- a/include/linux/netfilter_ipv6/ip6t_frag.h +++ b/include/linux/netfilter_ipv6/ip6t_frag.h @@ -2,10 +2,10 @@ #define _IP6T_FRAG_H struct ip6t_frag { - u_int32_t ids[2]; /* Security Parameter Index */ - u_int32_t hdrlen; /* Header Length */ - u_int8_t flags; /* */ - u_int8_t invflags; /* Inverse flags */ + __u32 ids[2]; /* Security Parameter Index */ + __u32 hdrlen; /* Header Length */ + __u8 flags; /* */ + __u8 invflags; /* Inverse flags */ }; #define IP6T_FRAG_IDS 0x01 diff --git a/include/linux/netfilter_ipv6/ip6t_hl.h b/include/linux/netfilter_ipv6/ip6t_hl.h index 5ef91b8319a8..c6fddcb971da 100644 --- a/include/linux/netfilter_ipv6/ip6t_hl.h +++ b/include/linux/netfilter_ipv6/ip6t_hl.h @@ -14,8 +14,8 @@ enum { struct ip6t_hl_info { - u_int8_t mode; - u_int8_t hop_limit; + __u8 mode; + __u8 hop_limit; }; diff --git a/include/linux/netfilter_ipv6/ip6t_ipv6header.h b/include/linux/netfilter_ipv6/ip6t_ipv6header.h index 01dfd445596a..73d53bd3ff62 100644 --- a/include/linux/netfilter_ipv6/ip6t_ipv6header.h +++ b/include/linux/netfilter_ipv6/ip6t_ipv6header.h @@ -9,9 +9,9 @@ on whether they contain certain headers */ #define __IPV6HEADER_H struct ip6t_ipv6header_info { - u_int8_t matchflags; - u_int8_t invflags; - u_int8_t modeflag; + __u8 matchflags; + __u8 invflags; + __u8 modeflag; }; #define MASK_HOPOPTS 128 diff --git a/include/linux/netfilter_ipv6/ip6t_mh.h b/include/linux/netfilter_ipv6/ip6t_mh.h index 18549bca2d1f..98c8cf685eea 100644 --- a/include/linux/netfilter_ipv6/ip6t_mh.h +++ b/include/linux/netfilter_ipv6/ip6t_mh.h @@ -3,8 +3,8 @@ /* MH matching stuff */ struct ip6t_mh { - u_int8_t types[2]; /* MH type range */ - u_int8_t invflags; /* Inverse flags */ + __u8 types[2]; /* MH type range */ + __u8 invflags; /* Inverse flags */ }; /* Values for "invflags" field in struct ip6t_mh. */ diff --git a/include/linux/netfilter_ipv6/ip6t_opts.h b/include/linux/netfilter_ipv6/ip6t_opts.h index 62d89bcd9f9c..405d309cd741 100644 --- a/include/linux/netfilter_ipv6/ip6t_opts.h +++ b/include/linux/netfilter_ipv6/ip6t_opts.h @@ -4,11 +4,11 @@ #define IP6T_OPTS_OPTSNR 16 struct ip6t_opts { - u_int32_t hdrlen; /* Header Length */ - u_int8_t flags; /* */ - u_int8_t invflags; /* Inverse flags */ - u_int16_t opts[IP6T_OPTS_OPTSNR]; /* opts */ - u_int8_t optsnr; /* Nr of OPts */ + __u32 hdrlen; /* Header Length */ + __u8 flags; /* */ + __u8 invflags; /* Inverse flags */ + __u16 opts[IP6T_OPTS_OPTSNR]; /* opts */ + __u8 optsnr; /* Nr of OPts */ }; #define IP6T_OPTS_LEN 0x01 diff --git a/include/linux/netfilter_ipv6/ip6t_rt.h b/include/linux/netfilter_ipv6/ip6t_rt.h index ab91bfd2cd00..e8dad20acd37 100644 --- a/include/linux/netfilter_ipv6/ip6t_rt.h +++ b/include/linux/netfilter_ipv6/ip6t_rt.h @@ -6,13 +6,13 @@ #define IP6T_RT_HOPS 16 struct ip6t_rt { - u_int32_t rt_type; /* Routing Type */ - u_int32_t segsleft[2]; /* Segments Left */ - u_int32_t hdrlen; /* Header Length */ - u_int8_t flags; /* */ - u_int8_t invflags; /* Inverse flags */ + __u32 rt_type; /* Routing Type */ + __u32 segsleft[2]; /* Segments Left */ + __u32 hdrlen; /* Header Length */ + __u8 flags; /* */ + __u8 invflags; /* Inverse flags */ struct in6_addr addrs[IP6T_RT_HOPS]; /* Hops */ - u_int8_t addrnr; /* Nr of Addresses */ + __u8 addrnr; /* Nr of Addresses */ }; #define IP6T_RT_TYP 0x01 -- cgit v1.2.3 From 0b8ad876275c74e4bfb6ec3150793f3c0ecfcee2 Mon Sep 17 00:00:00 2001 From: Jan Engelhardt Date: Tue, 18 Jan 2011 11:23:06 +0100 Subject: netfilter: xtables: add missing header files to export list Signed-off-by: Jan Engelhardt --- include/linux/netfilter/Kbuild | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/netfilter/Kbuild b/include/linux/netfilter/Kbuild index 9f11fbc377e2..fc4e0aa805a2 100644 --- a/include/linux/netfilter/Kbuild +++ b/include/linux/netfilter/Kbuild @@ -56,6 +56,8 @@ header-y += xt_rateest.h header-y += xt_realm.h header-y += xt_recent.h header-y += xt_sctp.h +header-y += xt_secmark.h +header-y += xt_socket.h header-y += xt_state.h header-y += xt_statistic.h header-y += xt_string.h -- cgit v1.2.3 From f615df76ed862b7d3927ec5f55b805ca19be29d9 Mon Sep 17 00:00:00 2001 From: Florian Westphal Date: Tue, 18 Jan 2011 15:52:14 +0100 Subject: netfilter: reduce NF_VERDICT_MASK to 0xff NF_VERDICT_MASK is currently 0xffff. This is because the upper 16 bits are used to store errno (for NF_DROP) or the queue number (NF_QUEUE verdict). As there are up to 0xffff different queues available, there is no more room to store additional flags. At the moment there are only 6 different verdicts, i.e. we can reduce NF_VERDICT_MASK to 0xff to allow storing additional flags in the 0xff00 space. NF_VERDICT_BITS would then be reduced to 8, but because the value is exported to userspace, this might cause breakage; e.g.: e.g. 'queuenr = (1 << NF_VERDICT_BITS) | NF_QUEUE' would now break. Thus, remove NF_VERDICT_BITS usage in the kernel and move the old value to the 'userspace compat' section. Signed-off-by: Florian Westphal Signed-off-by: Patrick McHardy --- include/linux/netfilter.h | 20 +++++++++++++++----- 1 file changed, 15 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/netfilter.h b/include/linux/netfilter.h index 0ab7ca787b22..78b73cc10216 100644 --- a/include/linux/netfilter.h +++ b/include/linux/netfilter.h @@ -24,16 +24,19 @@ #define NF_MAX_VERDICT NF_STOP /* we overload the higher bits for encoding auxiliary data such as the queue - * number. Not nice, but better than additional function arguments. */ -#define NF_VERDICT_MASK 0x0000ffff -#define NF_VERDICT_BITS 16 + * number or errno values. Not nice, but better than additional function + * arguments. */ +#define NF_VERDICT_MASK 0x000000ff + +/* extra verdict flags have mask 0x0000ff00 */ +/* queue number (NF_QUEUE) or errno (NF_DROP) */ #define NF_VERDICT_QMASK 0xffff0000 #define NF_VERDICT_QBITS 16 -#define NF_QUEUE_NR(x) ((((x) << NF_VERDICT_BITS) & NF_VERDICT_QMASK) | NF_QUEUE) +#define NF_QUEUE_NR(x) ((((x) << 16) & NF_VERDICT_QMASK) | NF_QUEUE) -#define NF_DROP_ERR(x) (((-x) << NF_VERDICT_BITS) | NF_DROP) +#define NF_DROP_ERR(x) (((-x) << 16) | NF_DROP) /* only for userspace compatibility */ #ifndef __KERNEL__ @@ -41,6 +44,9 @@ <= 0x2000 is used for protocol-flags. */ #define NFC_UNKNOWN 0x4000 #define NFC_ALTERED 0x8000 + +/* NF_VERDICT_BITS should be 8 now, but userspace might break if this changes */ +#define NF_VERDICT_BITS 16 #endif enum nf_inet_hooks { @@ -72,6 +78,10 @@ union nf_inet_addr { #ifdef __KERNEL__ #ifdef CONFIG_NETFILTER +static inline int NF_DROP_GETERR(int verdict) +{ + return -(verdict >> NF_VERDICT_QBITS); +} static inline int nf_inet_addr_cmp(const union nf_inet_addr *a1, const union nf_inet_addr *a2) -- cgit v1.2.3 From 94b27cc36123069966616670c3653cd6873babe9 Mon Sep 17 00:00:00 2001 From: Florian Westphal Date: Tue, 18 Jan 2011 16:08:30 +0100 Subject: netfilter: allow NFQUEUE bypass if no listener is available If an skb is to be NF_QUEUE'd, but no program has opened the queue, the packet is dropped. This adds a v2 target revision of xt_NFQUEUE that allows packets to continue through the ruleset instead. Because the actual queueing happens outside of the target context, the 'bypass' flag has to be communicated back to the netfilter core. Unfortunately the only choice to do this without adding a new function argument is to use the target function return value (i.e. the verdict). In the NF_QUEUE case, the upper 16bit already contain the queue number to use. The previous patch reduced NF_VERDICT_MASK to 0xff, i.e. we now have extra room for a new flag. If a hook issued a NF_QUEUE verdict, then the netfilter core will continue packet processing if the queueing hook returns -ESRCH (== "this queue does not exist") and the new NF_VERDICT_FLAG_QUEUE_BYPASS flag is set in the verdict value. Note: If the queue exists, but userspace does not consume packets fast enough, the skb will still be dropped. Signed-off-by: Florian Westphal Signed-off-by: Patrick McHardy --- include/linux/netfilter.h | 1 + include/linux/netfilter/xt_NFQUEUE.h | 6 ++++++ 2 files changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/netfilter.h b/include/linux/netfilter.h index 78b73cc10216..eeec00abb664 100644 --- a/include/linux/netfilter.h +++ b/include/linux/netfilter.h @@ -29,6 +29,7 @@ #define NF_VERDICT_MASK 0x000000ff /* extra verdict flags have mask 0x0000ff00 */ +#define NF_VERDICT_FLAG_QUEUE_BYPASS 0x00008000 /* queue number (NF_QUEUE) or errno (NF_DROP) */ #define NF_VERDICT_QMASK 0xffff0000 diff --git a/include/linux/netfilter/xt_NFQUEUE.h b/include/linux/netfilter/xt_NFQUEUE.h index 2584f4a777de..9eafdbbb401c 100644 --- a/include/linux/netfilter/xt_NFQUEUE.h +++ b/include/linux/netfilter/xt_NFQUEUE.h @@ -20,4 +20,10 @@ struct xt_NFQ_info_v1 { __u16 queues_total; }; +struct xt_NFQ_info_v2 { + __u16 queuenum; + __u16 queues_total; + __u16 bypass; +}; + #endif /* _XT_NFQ_TARGET_H */ -- cgit v1.2.3 From 93557f53e1fbd9e2b6574ab0a9b5852628fde9e3 Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Tue, 18 Jan 2011 18:12:24 +0100 Subject: netfilter: nf_conntrack: nf_conntrack snmp helper Adding support for SNMP broadcast connection tracking. The SNMP broadcast requests are now paired with the SNMP responses. Thus allowing using SNMP broadcasts with firewall enabled. Please refer to the following conversation: http://marc.info/?l=netfilter-devel&m=125992205006600&w=2 Patrick McHardy wrote: > > The best solution would be to add generic broadcast tracking, the > > use of expectations for this is a bit of abuse. > > The second best choice I guess would be to move the help() function > > to a shared module and generalize it so it can be used for both. This patch implements the "second best choice". Since the netbios-ns conntrack module uses the same helper functionality as the snmp, only one helper function is added for both snmp and netbios-ns modules into the new object - nf_conntrack_broadcast. Signed-off-by: Jiri Olsa Signed-off-by: Patrick McHardy --- include/linux/netfilter/nf_conntrack_snmp.h | 9 +++++++++ 1 file changed, 9 insertions(+) create mode 100644 include/linux/netfilter/nf_conntrack_snmp.h (limited to 'include/linux') diff --git a/include/linux/netfilter/nf_conntrack_snmp.h b/include/linux/netfilter/nf_conntrack_snmp.h new file mode 100644 index 000000000000..064bc63a5346 --- /dev/null +++ b/include/linux/netfilter/nf_conntrack_snmp.h @@ -0,0 +1,9 @@ +#ifndef _NF_CONNTRACK_SNMP_H +#define _NF_CONNTRACK_SNMP_H + +extern int (*nf_nat_snmp_hook)(struct sk_buff *skb, + unsigned int protoff, + struct nf_conn *ct, + enum ip_conntrack_info ctinfo); + +#endif /* _NF_CONNTRACK_SNMP_H */ -- cgit v1.2.3 From 7c86ad4a50ece39305b1be900df9a58645716602 Mon Sep 17 00:00:00 2001 From: Paul Mundt Date: Wed, 19 Jan 2011 14:16:42 +0900 Subject: serial: sh-sci: Kill off unused clock string. Now that the clock string isn't used by the driver anymore, kill it off from the platform structure. Signed-off-by: Paul Mundt --- include/linux/serial_sci.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/serial_sci.h b/include/linux/serial_sci.h index 1630d9cae22a..f538132f9622 100644 --- a/include/linux/serial_sci.h +++ b/include/linux/serial_sci.h @@ -45,7 +45,6 @@ struct plat_sci_port { unsigned int irqs[SCIx_NR_IRQS]; /* ERI, RXI, TXI, BRI */ unsigned int type; /* SCI / SCIF / IRDA */ upf_t flags; /* UPF_* flags */ - char *clk; /* clock string */ unsigned int scbrr_algo_id; /* SCBRR calculation algo */ unsigned int scscr; /* SCSCR initialization */ -- cgit v1.2.3 From e735038f3848a720f84a819c8191ed2f6a1beed8 Mon Sep 17 00:00:00 2001 From: Paul Mundt Date: Wed, 19 Jan 2011 14:18:06 +0900 Subject: serial: sh-sci: Kill off unused membase kludge. All users of the platform port data specify a mapbase where the driver later derives the membase from. Now that UPF flags are taken in to account for generic ioremapping we can kill off the port-specific membase clobbering and simply use the generic paths. This derives from a time when sh64 was not capable of using the generic ioremap implementation and had employed early bolted DTLB mappings for port access, which is no longer an issue. Signed-off-by: Paul Mundt --- include/linux/serial_sci.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/serial_sci.h b/include/linux/serial_sci.h index f538132f9622..789acf5b31d3 100644 --- a/include/linux/serial_sci.h +++ b/include/linux/serial_sci.h @@ -40,7 +40,6 @@ struct device; * Platform device specific platform_data struct */ struct plat_sci_port { - void __iomem *membase; /* io cookie */ unsigned long mapbase; /* resource base */ unsigned int irqs[SCIx_NR_IRQS]; /* ERI, RXI, TXI, BRI */ unsigned int type; /* SCI / SCIF / IRDA */ -- cgit v1.2.3 From 22cc83780e214f4f009384f9c1d0658629625d49 Mon Sep 17 00:00:00 2001 From: Paul Mundt Date: Wed, 19 Jan 2011 14:37:14 +0900 Subject: serial: sh-sci: Provide a helper for muxed IRQs. All of the muxed IRQs presently populate the IRQ array verbosely, this simply provides a trivial helper to do it for them. Signed-off-by: Paul Mundt --- include/linux/serial_sci.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/linux') diff --git a/include/linux/serial_sci.h b/include/linux/serial_sci.h index 789acf5b31d3..01ffe7c56e5b 100644 --- a/include/linux/serial_sci.h +++ b/include/linux/serial_sci.h @@ -34,6 +34,14 @@ enum { SCIx_NR_IRQS, }; +#define SCIx_IRQ_MUXED(irq) \ +{ \ + [SCIx_ERI_IRQ] = (irq), \ + [SCIx_RXI_IRQ] = (irq), \ + [SCIx_TXI_IRQ] = (irq), \ + [SCIx_BRI_IRQ] = (irq), \ +} + struct device; /* -- cgit v1.2.3 From 27bd107525607e6a64c612ca3c43ca0dac4768b1 Mon Sep 17 00:00:00 2001 From: Paul Mundt Date: Wed, 19 Jan 2011 15:37:31 +0900 Subject: serial: sh-sci: Kill off some DMA ifdeffery. There's nothing worth hiding under the ifdef in the platform DMA definitions, and we certainly don't want board code adding this in to their platform data definitions, so we always expose the slave rx/tx and device pointer members instead. Signed-off-by: Paul Mundt --- include/linux/serial_sci.h | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/serial_sci.h b/include/linux/serial_sci.h index 01ffe7c56e5b..a2afc9fbe186 100644 --- a/include/linux/serial_sci.h +++ b/include/linux/serial_sci.h @@ -58,10 +58,8 @@ struct plat_sci_port { struct device *dma_dev; -#ifdef CONFIG_SERIAL_SH_SCI_DMA - unsigned int dma_slave_tx; - unsigned int dma_slave_rx; -#endif + unsigned int dma_slave_tx; + unsigned int dma_slave_rx; }; #endif /* __LINUX_SERIAL_SCI_H */ -- cgit v1.2.3 From a992ca2a0498edd22a88ac8c41570f536de29c9e Mon Sep 17 00:00:00 2001 From: Pablo Neira Ayuso Date: Wed, 19 Jan 2011 16:00:07 +0100 Subject: netfilter: nf_conntrack_tstamp: add flow-based timestamp extension This patch adds flow-based timestamping for conntracks. This conntrack extension is disabled by default. Basically, we use two 64-bits variables to store the creation timestamp once the conntrack has been confirmed and the other to store the deletion time. This extension is disabled by default, to enable it, you have to: echo 1 > /proc/sys/net/netfilter/nf_conntrack_timestamp This patch allows to save memory for user-space flow-based loogers such as ulogd2. In short, ulogd2 does not need to keep a hashtable with the conntrack in user-space to know when they were created and destroyed, instead we use the kernel timestamp. If we want to have a sane IPFIX implementation in user-space, this nanosecs resolution timestamps are also useful. Other custom user-space applications can benefit from this via libnetfilter_conntrack. This patch modifies the /proc output to display the delta time in seconds since the flow start. You can also obtain the flow-start date by means of the conntrack-tools. Signed-off-by: Pablo Neira Ayuso Signed-off-by: Patrick McHardy --- include/linux/netfilter/nfnetlink_conntrack.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include/linux') diff --git a/include/linux/netfilter/nfnetlink_conntrack.h b/include/linux/netfilter/nfnetlink_conntrack.h index 19711e3ffd42..debf1aefd753 100644 --- a/include/linux/netfilter/nfnetlink_conntrack.h +++ b/include/linux/netfilter/nfnetlink_conntrack.h @@ -42,6 +42,7 @@ enum ctattr_type { CTA_SECMARK, /* obsolete */ CTA_ZONE, CTA_SECCTX, + CTA_TIMESTAMP, __CTA_MAX }; #define CTA_MAX (__CTA_MAX - 1) @@ -127,6 +128,14 @@ enum ctattr_counters { }; #define CTA_COUNTERS_MAX (__CTA_COUNTERS_MAX - 1) +enum ctattr_tstamp { + CTA_TIMESTAMP_UNSPEC, + CTA_TIMESTAMP_START, + CTA_TIMESTAMP_STOP, + __CTA_TIMESTAMP_MAX +}; +#define CTA_TIMESTAMP_MAX (__CTA_TIMESTAMP_MAX - 1) + enum ctattr_nat { CTA_NAT_UNSPEC, CTA_NAT_MINIP, -- cgit v1.2.3 From cc4fc022571376412986e27e08b0765e9cb2aafb Mon Sep 17 00:00:00 2001 From: Jan Engelhardt Date: Tue, 18 Jan 2011 17:32:40 +0100 Subject: netfilter: xtables: connlimit revision 1 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This adds destination address-based selection. The old "inverse" member is overloaded (memory-wise) with a new "flags" variable, similar to how J.Park did it with xt_string rev 1. Since revision 0 userspace only sets flag 0x1, no great changes are made to explicitly test for different revisions. Signed-off-by: Jan Engelhardt --- include/linux/netfilter/xt_connlimit.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'include/linux') diff --git a/include/linux/netfilter/xt_connlimit.h b/include/linux/netfilter/xt_connlimit.h index 7e3284bcbd2b..8884efc605c7 100644 --- a/include/linux/netfilter/xt_connlimit.h +++ b/include/linux/netfilter/xt_connlimit.h @@ -3,6 +3,11 @@ struct xt_connlimit_data; +enum { + XT_CONNLIMIT_INVERT = 1 << 0, + XT_CONNLIMIT_DADDR = 1 << 1, +}; + struct xt_connlimit_info { union { union nf_inet_addr mask; @@ -14,6 +19,13 @@ struct xt_connlimit_info { #endif }; unsigned int limit, inverse; + union { + /* revision 0 */ + unsigned int inverse; + + /* revision 1 */ + __u32 flags; + }; /* Used internally by the kernel */ struct xt_connlimit_data *data __attribute__((aligned(8))); -- cgit v1.2.3 From cbda10fa97d72c7a1923be4426171aa90e8c6dab Mon Sep 17 00:00:00 2001 From: Vlad Dogaru Date: Thu, 13 Jan 2011 23:38:30 +0000 Subject: net_device: add support for network device groups Net devices can now be grouped, enabling simpler manipulation from userspace. This patch adds a group field to the net_device structure, as well as rtnetlink support to query and modify it. Signed-off-by: Vlad Dogaru Acked-by: Jamal Hadi Salim Signed-off-by: David S. Miller --- include/linux/if_link.h | 1 + include/linux/netdevice.h | 7 +++++++ 2 files changed, 8 insertions(+) (limited to 'include/linux') diff --git a/include/linux/if_link.h b/include/linux/if_link.h index 6485d2a89bec..f4a2e6b1b864 100644 --- a/include/linux/if_link.h +++ b/include/linux/if_link.h @@ -135,6 +135,7 @@ enum { IFLA_VF_PORTS, IFLA_PORT_SELF, IFLA_AF_SPEC, + IFLA_GROUP, /* Group the device belongs to */ __IFLA_MAX }; diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index d971346b0340..68a4627b74f5 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -75,6 +75,9 @@ struct wireless_dev; #define NET_RX_SUCCESS 0 /* keep 'em coming, baby */ #define NET_RX_DROP 1 /* packet dropped */ +/* Initial net device group. All devices belong to group 0 by default. */ +#define INIT_NETDEV_GROUP 0 + /* * Transmit return codes: transmit return codes originate from three different * namespaces: @@ -1153,6 +1156,9 @@ struct net_device { /* phy device may attach itself for hardware timestamping */ struct phy_device *phydev; + + /* group the device belongs to */ + int group; }; #define to_net_dev(d) container_of(d, struct net_device, dev) @@ -1844,6 +1850,7 @@ extern int dev_set_alias(struct net_device *, const char *, size_t); extern int dev_change_net_namespace(struct net_device *, struct net *, const char *); extern int dev_set_mtu(struct net_device *, int); +extern void dev_set_group(struct net_device *, int); extern int dev_set_mac_address(struct net_device *, struct sockaddr *); extern int dev_hard_start_xmit(struct sk_buff *skb, -- cgit v1.2.3 From 4f57c087de9b46182545676d2c594120a20f2e58 Mon Sep 17 00:00:00 2001 From: John Fastabend Date: Mon, 17 Jan 2011 08:06:04 +0000 Subject: net: implement mechanism for HW based QOS This patch provides a mechanism for lower layer devices to steer traffic using skb->priority to tx queues. This allows for hardware based QOS schemes to use the default qdisc without incurring the penalties related to global state and the qdisc lock. While reliably receiving skbs on the correct tx ring to avoid head of line blocking resulting from shuffling in the LLD. Finally, all the goodness from txq caching and xps/rps can still be leveraged. Many drivers and hardware exist with the ability to implement QOS schemes in the hardware but currently these drivers tend to rely on firmware to reroute specific traffic, a driver specific select_queue or the queue_mapping action in the qdisc. By using select_queue for this drivers need to be updated for each and every traffic type and we lose the goodness of much of the upstream work. Firmware solutions are inherently inflexible. And finally if admins are expected to build a qdisc and filter rules to steer traffic this requires knowledge of how the hardware is currently configured. The number of tx queues and the queue offsets may change depending on resources. Also this approach incurs all the overhead of a qdisc with filters. With the mechanism in this patch users can set skb priority using expected methods ie setsockopt() or the stack can set the priority directly. Then the skb will be steered to the correct tx queues aligned with hardware QOS traffic classes. In the normal case with single traffic class and all queues in this class everything works as is until the LLD enables multiple tcs. To steer the skb we mask out the lower 4 bits of the priority and allow the hardware to configure upto 15 distinct classes of traffic. This is expected to be sufficient for most applications at any rate it is more then the 8021Q spec designates and is equal to the number of prio bands currently implemented in the default qdisc. This in conjunction with a userspace application such as lldpad can be used to implement 8021Q transmission selection algorithms one of these algorithms being the extended transmission selection algorithm currently being used for DCB. Signed-off-by: John Fastabend Signed-off-by: David S. Miller --- include/linux/netdevice.h | 68 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 68 insertions(+) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 68a4627b74f5..371fa8839d51 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -646,6 +646,14 @@ struct xps_dev_maps { (nr_cpu_ids * sizeof(struct xps_map *))) #endif /* CONFIG_XPS */ +#define TC_MAX_QUEUE 16 +#define TC_BITMASK 15 +/* HW offloaded queuing disciplines txq count and offset maps */ +struct netdev_tc_txq { + u16 count; + u16 offset; +}; + /* * This structure defines the management hooks for network devices. * The following hooks can be defined; unless noted otherwise, they are @@ -756,6 +764,11 @@ struct xps_dev_maps { * int (*ndo_set_vf_port)(struct net_device *dev, int vf, * struct nlattr *port[]); * int (*ndo_get_vf_port)(struct net_device *dev, int vf, struct sk_buff *skb); + * int (*ndo_setup_tc)(struct net_device *dev, u8 tc) + * Called to setup 'tc' number of traffic classes in the net device. This + * is always called from the stack with the rtnl lock held and netif tx + * queues stopped. This allows the netdevice to perform queue management + * safely. */ #define HAVE_NET_DEVICE_OPS struct net_device_ops { @@ -814,6 +827,7 @@ struct net_device_ops { struct nlattr *port[]); int (*ndo_get_vf_port)(struct net_device *dev, int vf, struct sk_buff *skb); + int (*ndo_setup_tc)(struct net_device *dev, u8 tc); #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) int (*ndo_fcoe_enable)(struct net_device *dev); int (*ndo_fcoe_disable)(struct net_device *dev); @@ -1146,6 +1160,9 @@ struct net_device { /* Data Center Bridging netlink ops */ const struct dcbnl_rtnl_ops *dcbnl_ops; #endif + u8 num_tc; + struct netdev_tc_txq tc_to_txq[TC_MAX_QUEUE]; + u8 prio_tc_map[TC_BITMASK + 1]; #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) /* max exchange id for FCoE LRO by ddp */ @@ -1164,6 +1181,57 @@ struct net_device { #define NETDEV_ALIGN 32 +static inline +int netdev_get_prio_tc_map(const struct net_device *dev, u32 prio) +{ + return dev->prio_tc_map[prio & TC_BITMASK]; +} + +static inline +int netdev_set_prio_tc_map(struct net_device *dev, u8 prio, u8 tc) +{ + if (tc >= dev->num_tc) + return -EINVAL; + + dev->prio_tc_map[prio & TC_BITMASK] = tc & TC_BITMASK; + return 0; +} + +static inline +void netdev_reset_tc(struct net_device *dev) +{ + dev->num_tc = 0; + memset(dev->tc_to_txq, 0, sizeof(dev->tc_to_txq)); + memset(dev->prio_tc_map, 0, sizeof(dev->prio_tc_map)); +} + +static inline +int netdev_set_tc_queue(struct net_device *dev, u8 tc, u16 count, u16 offset) +{ + if (tc >= dev->num_tc) + return -EINVAL; + + dev->tc_to_txq[tc].count = count; + dev->tc_to_txq[tc].offset = offset; + return 0; +} + +static inline +int netdev_set_num_tc(struct net_device *dev, u8 num_tc) +{ + if (num_tc > TC_MAX_QUEUE) + return -EINVAL; + + dev->num_tc = num_tc; + return 0; +} + +static inline +int netdev_get_num_tc(struct net_device *dev) +{ + return dev->num_tc; +} + static inline struct netdev_queue *netdev_get_tx_queue(const struct net_device *dev, unsigned int index) -- cgit v1.2.3 From b8970f0bfc78103cb74c66055de7379b15097840 Mon Sep 17 00:00:00 2001 From: John Fastabend Date: Mon, 17 Jan 2011 08:06:09 +0000 Subject: net_sched: implement a root container qdisc sch_mqprio This implements a mqprio queueing discipline that by default creates a pfifo_fast qdisc per tx queue and provides the needed configuration interface. Using the mqprio qdisc the number of tcs currently in use along with the range of queues alloted to each class can be configured. By default skbs are mapped to traffic classes using the skb priority. This mapping is configurable. Configurable parameters, struct tc_mqprio_qopt { __u8 num_tc; __u8 prio_tc_map[TC_BITMASK + 1]; __u8 hw; __u16 count[TC_MAX_QUEUE]; __u16 offset[TC_MAX_QUEUE]; }; Here the count/offset pairing give the queue alignment and the prio_tc_map gives the mapping from skb->priority to tc. The hw bit determines if the hardware should configure the count and offset values. If the hardware bit is set then the operation will fail if the hardware does not implement the ndo_setup_tc operation. This is to avoid undetermined states where the hardware may or may not control the queue mapping. Also minimal bounds checking is done on the count/offset to verify a queue does not exceed num_tx_queues and that queue ranges do not overlap. Otherwise it is left to user policy or hardware configuration to create useful mappings. It is expected that hardware QOS schemes can be implemented by creating appropriate mappings of queues in ndo_tc_setup(). One expected use case is drivers will use the ndo_setup_tc to map queue ranges onto 802.1Q traffic classes. This provides a generic mechanism to map network traffic onto these traffic classes and removes the need for lower layer drivers to know specifics about traffic types. Signed-off-by: John Fastabend Signed-off-by: David S. Miller --- include/linux/pkt_sched.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pkt_sched.h b/include/linux/pkt_sched.h index 2cfa4bc8dea6..776cd93d5f7b 100644 --- a/include/linux/pkt_sched.h +++ b/include/linux/pkt_sched.h @@ -481,4 +481,16 @@ struct tc_drr_stats { __u32 deficit; }; +/* MQPRIO */ +#define TC_QOPT_BITMASK 15 +#define TC_QOPT_MAX_QUEUE 16 + +struct tc_mqprio_qopt { + __u8 num_tc; + __u8 prio_tc_map[TC_QOPT_BITMASK + 1]; + __u8 hw; + __u16 count[TC_QOPT_MAX_QUEUE]; + __u16 offset[TC_QOPT_MAX_QUEUE]; +}; + #endif -- cgit v1.2.3 From 5d8449286456659cdd0998e62d80df2d9e77e9e3 Mon Sep 17 00:00:00 2001 From: Jan Engelhardt Date: Thu, 20 Jan 2011 08:48:15 +0100 Subject: netfilter: xtables: remove extraneous header that slipped in Commit 0b8ad87 (netfilter: xtables: add missing header files to export list) erroneously added this. Signed-off-by: Jan Engelhardt Signed-off-by: Patrick McHardy --- include/linux/netfilter/Kbuild | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/netfilter/Kbuild b/include/linux/netfilter/Kbuild index fc4e0aa805a2..89c0d1e20d72 100644 --- a/include/linux/netfilter/Kbuild +++ b/include/linux/netfilter/Kbuild @@ -56,7 +56,6 @@ header-y += xt_rateest.h header-y += xt_realm.h header-y += xt_recent.h header-y += xt_sctp.h -header-y += xt_secmark.h header-y += xt_socket.h header-y += xt_state.h header-y += xt_statistic.h -- cgit v1.2.3 From 2ce802f62ba32a7d95748ac92bf351f76affb6ff Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Thu, 20 Jan 2011 12:06:35 +0100 Subject: lockdep: Move early boot local IRQ enable/disable status to init/main.c During early boot, local IRQ is disabled until IRQ subsystem is properly initialized. During this time, no one should enable local IRQ and some operations which usually are not allowed with IRQ disabled, e.g. operations which might sleep or require communications with other processors, are allowed. lockdep tracked this with early_boot_irqs_off/on() callbacks. As other subsystems need this information too, move it to init/main.c and make it generally available. While at it, toggle the boolean to early_boot_irqs_disabled instead of enabled so that it can be initialized with %false and %true indicates the exceptional condition. Signed-off-by: Tejun Heo Acked-by: Peter Zijlstra Acked-by: Pekka Enberg Cc: Linus Torvalds LKML-Reference: <20110120110635.GB6036@htj.dyndns.org> Signed-off-by: Ingo Molnar --- include/linux/kernel.h | 2 ++ include/linux/lockdep.h | 8 -------- 2 files changed, 2 insertions(+), 8 deletions(-) (limited to 'include/linux') diff --git a/include/linux/kernel.h b/include/linux/kernel.h index 5a9d9059520b..d07d8057e440 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -243,6 +243,8 @@ extern int test_taint(unsigned flag); extern unsigned long get_taint(void); extern int root_mountflags; +extern bool early_boot_irqs_disabled; + /* Values used for system_state */ extern enum system_states { SYSTEM_BOOTING, diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h index 71c09b26c759..f638fd78d106 100644 --- a/include/linux/lockdep.h +++ b/include/linux/lockdep.h @@ -436,16 +436,8 @@ do { \ #endif /* CONFIG_LOCKDEP */ #ifdef CONFIG_TRACE_IRQFLAGS -extern void early_boot_irqs_off(void); -extern void early_boot_irqs_on(void); extern void print_irqtrace_events(struct task_struct *curr); #else -static inline void early_boot_irqs_off(void) -{ -} -static inline void early_boot_irqs_on(void) -{ -} static inline void print_irqtrace_events(struct task_struct *curr) { } -- cgit v1.2.3 From ba12b130a65840005770135a69199cb9adaf8c8f Mon Sep 17 00:00:00 2001 From: Jan Engelhardt Date: Thu, 20 Jan 2011 14:01:12 +0100 Subject: netfilter: xtables: remove duplicate member Accidentally missed removing the old out-of-union "inverse" member, which caused the struct size to change which then gives size mismatch warnings when using an old iptables. It is interesting to see that gcc did not warn about this before. (Filed http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47376 ) Signed-off-by: Jan Engelhardt --- include/linux/netfilter/xt_connlimit.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/netfilter/xt_connlimit.h b/include/linux/netfilter/xt_connlimit.h index 8884efc605c7..ab1d3b57fff7 100644 --- a/include/linux/netfilter/xt_connlimit.h +++ b/include/linux/netfilter/xt_connlimit.h @@ -18,7 +18,7 @@ struct xt_connlimit_info { }; #endif }; - unsigned int limit, inverse; + unsigned int limit; union { /* revision 0 */ unsigned int inverse; -- cgit v1.2.3 From 06988b06935da7a210887e9d3f50f46f2faa4953 Mon Sep 17 00:00:00 2001 From: Jan Engelhardt Date: Thu, 20 Jan 2011 17:50:17 +0100 Subject: netfilter: xtables: add missing header inclusions for headers_check Resolve these warnings on `make headers_check`: usr/include/linux/netfilter/xt_CT.h:7: found __[us]{8,16,32,64} type without #include ... Signed-off-by: Jan Engelhardt --- include/linux/netfilter/xt_CT.h | 2 ++ include/linux/netfilter/xt_TCPOPTSTRIP.h | 2 ++ include/linux/netfilter/xt_TPROXY.h | 2 ++ include/linux/netfilter/xt_cluster.h | 2 ++ include/linux/netfilter/xt_connlimit.h | 2 ++ include/linux/netfilter/xt_quota.h | 2 ++ include/linux/netfilter/xt_socket.h | 2 ++ include/linux/netfilter/xt_time.h | 2 ++ include/linux/netfilter/xt_u32.h | 2 ++ include/linux/netfilter_bridge/ebt_802_3.h | 2 ++ include/linux/netfilter_bridge/ebt_among.h | 2 ++ include/linux/netfilter_bridge/ebt_arp.h | 2 ++ include/linux/netfilter_bridge/ebt_ip.h | 2 ++ include/linux/netfilter_bridge/ebt_ip6.h | 2 ++ include/linux/netfilter_bridge/ebt_limit.h | 2 ++ include/linux/netfilter_bridge/ebt_log.h | 2 ++ include/linux/netfilter_bridge/ebt_mark_m.h | 2 ++ include/linux/netfilter_bridge/ebt_nflog.h | 2 ++ include/linux/netfilter_bridge/ebt_pkttype.h | 2 ++ include/linux/netfilter_bridge/ebt_stp.h | 2 ++ include/linux/netfilter_bridge/ebt_ulog.h | 2 ++ include/linux/netfilter_bridge/ebt_vlan.h | 2 ++ include/linux/netfilter_ipv4/ipt_CLUSTERIP.h | 2 ++ include/linux/netfilter_ipv4/ipt_ECN.h | 2 ++ include/linux/netfilter_ipv4/ipt_SAME.h | 2 ++ include/linux/netfilter_ipv4/ipt_TTL.h | 2 ++ include/linux/netfilter_ipv4/ipt_addrtype.h | 2 ++ include/linux/netfilter_ipv4/ipt_ah.h | 2 ++ include/linux/netfilter_ipv4/ipt_ecn.h | 2 ++ include/linux/netfilter_ipv4/ipt_ttl.h | 2 ++ include/linux/netfilter_ipv6/ip6t_HL.h | 2 ++ include/linux/netfilter_ipv6/ip6t_REJECT.h | 2 ++ include/linux/netfilter_ipv6/ip6t_ah.h | 2 ++ include/linux/netfilter_ipv6/ip6t_frag.h | 2 ++ include/linux/netfilter_ipv6/ip6t_hl.h | 2 ++ include/linux/netfilter_ipv6/ip6t_ipv6header.h | 2 ++ include/linux/netfilter_ipv6/ip6t_mh.h | 2 ++ include/linux/netfilter_ipv6/ip6t_opts.h | 2 ++ include/linux/netfilter_ipv6/ip6t_rt.h | 1 + 39 files changed, 77 insertions(+) (limited to 'include/linux') diff --git a/include/linux/netfilter/xt_CT.h b/include/linux/netfilter/xt_CT.h index fbf4c5658554..b56e76811c04 100644 --- a/include/linux/netfilter/xt_CT.h +++ b/include/linux/netfilter/xt_CT.h @@ -1,6 +1,8 @@ #ifndef _XT_CT_H #define _XT_CT_H +#include + #define XT_CT_NOTRACK 0x1 struct xt_ct_target_info { diff --git a/include/linux/netfilter/xt_TCPOPTSTRIP.h b/include/linux/netfilter/xt_TCPOPTSTRIP.h index 342ef14b1761..7157318499c2 100644 --- a/include/linux/netfilter/xt_TCPOPTSTRIP.h +++ b/include/linux/netfilter/xt_TCPOPTSTRIP.h @@ -1,6 +1,8 @@ #ifndef _XT_TCPOPTSTRIP_H #define _XT_TCPOPTSTRIP_H +#include + #define tcpoptstrip_set_bit(bmap, idx) \ (bmap[(idx) >> 5] |= 1U << (idx & 31)) #define tcpoptstrip_test_bit(bmap, idx) \ diff --git a/include/linux/netfilter/xt_TPROXY.h b/include/linux/netfilter/xt_TPROXY.h index 8097e0b4c15e..902043c2073f 100644 --- a/include/linux/netfilter/xt_TPROXY.h +++ b/include/linux/netfilter/xt_TPROXY.h @@ -1,6 +1,8 @@ #ifndef _XT_TPROXY_H #define _XT_TPROXY_H +#include + /* TPROXY target is capable of marking the packet to perform * redirection. We can get rid of that whenever we get support for * mutliple targets in the same rule. */ diff --git a/include/linux/netfilter/xt_cluster.h b/include/linux/netfilter/xt_cluster.h index 66cfa3c782ac..9b883c8fbf54 100644 --- a/include/linux/netfilter/xt_cluster.h +++ b/include/linux/netfilter/xt_cluster.h @@ -1,6 +1,8 @@ #ifndef _XT_CLUSTER_MATCH_H #define _XT_CLUSTER_MATCH_H +#include + enum xt_cluster_flags { XT_CLUSTER_F_INV = (1 << 0) }; diff --git a/include/linux/netfilter/xt_connlimit.h b/include/linux/netfilter/xt_connlimit.h index ab1d3b57fff7..0ca66e97acbc 100644 --- a/include/linux/netfilter/xt_connlimit.h +++ b/include/linux/netfilter/xt_connlimit.h @@ -1,6 +1,8 @@ #ifndef _XT_CONNLIMIT_H #define _XT_CONNLIMIT_H +#include + struct xt_connlimit_data; enum { diff --git a/include/linux/netfilter/xt_quota.h b/include/linux/netfilter/xt_quota.h index 8bda65f0bc92..ca6e03e47a17 100644 --- a/include/linux/netfilter/xt_quota.h +++ b/include/linux/netfilter/xt_quota.h @@ -1,6 +1,8 @@ #ifndef _XT_QUOTA_H #define _XT_QUOTA_H +#include + enum xt_quota_flags { XT_QUOTA_INVERT = 0x1, }; diff --git a/include/linux/netfilter/xt_socket.h b/include/linux/netfilter/xt_socket.h index 6f475b8ff34b..26d7217bd4f1 100644 --- a/include/linux/netfilter/xt_socket.h +++ b/include/linux/netfilter/xt_socket.h @@ -1,6 +1,8 @@ #ifndef _XT_SOCKET_H #define _XT_SOCKET_H +#include + enum { XT_SOCKET_TRANSPARENT = 1 << 0, }; diff --git a/include/linux/netfilter/xt_time.h b/include/linux/netfilter/xt_time.h index b8bd4568efdb..7c37fac576c4 100644 --- a/include/linux/netfilter/xt_time.h +++ b/include/linux/netfilter/xt_time.h @@ -1,6 +1,8 @@ #ifndef _XT_TIME_H #define _XT_TIME_H 1 +#include + struct xt_time_info { __u32 date_start; __u32 date_stop; diff --git a/include/linux/netfilter/xt_u32.h b/include/linux/netfilter/xt_u32.h index e8c3d8722bae..04d1bfea03c2 100644 --- a/include/linux/netfilter/xt_u32.h +++ b/include/linux/netfilter/xt_u32.h @@ -1,6 +1,8 @@ #ifndef _XT_U32_H #define _XT_U32_H 1 +#include + enum xt_u32_ops { XT_U32_AND, XT_U32_LEFTSH, diff --git a/include/linux/netfilter_bridge/ebt_802_3.h b/include/linux/netfilter_bridge/ebt_802_3.h index c427764f4444..be5be1577a56 100644 --- a/include/linux/netfilter_bridge/ebt_802_3.h +++ b/include/linux/netfilter_bridge/ebt_802_3.h @@ -1,6 +1,8 @@ #ifndef __LINUX_BRIDGE_EBT_802_3_H #define __LINUX_BRIDGE_EBT_802_3_H +#include + #define EBT_802_3_SAP 0x01 #define EBT_802_3_TYPE 0x02 diff --git a/include/linux/netfilter_bridge/ebt_among.h b/include/linux/netfilter_bridge/ebt_among.h index 686c9619dbc0..bd4e3ad0b706 100644 --- a/include/linux/netfilter_bridge/ebt_among.h +++ b/include/linux/netfilter_bridge/ebt_among.h @@ -1,6 +1,8 @@ #ifndef __LINUX_BRIDGE_EBT_AMONG_H #define __LINUX_BRIDGE_EBT_AMONG_H +#include + #define EBT_AMONG_DST 0x01 #define EBT_AMONG_SRC 0x02 diff --git a/include/linux/netfilter_bridge/ebt_arp.h b/include/linux/netfilter_bridge/ebt_arp.h index e62b5af95869..522f3e427f49 100644 --- a/include/linux/netfilter_bridge/ebt_arp.h +++ b/include/linux/netfilter_bridge/ebt_arp.h @@ -1,6 +1,8 @@ #ifndef __LINUX_BRIDGE_EBT_ARP_H #define __LINUX_BRIDGE_EBT_ARP_H +#include + #define EBT_ARP_OPCODE 0x01 #define EBT_ARP_HTYPE 0x02 #define EBT_ARP_PTYPE 0x04 diff --git a/include/linux/netfilter_bridge/ebt_ip.h b/include/linux/netfilter_bridge/ebt_ip.h index d99de58da2c7..c4bbc41b0ea4 100644 --- a/include/linux/netfilter_bridge/ebt_ip.h +++ b/include/linux/netfilter_bridge/ebt_ip.h @@ -15,6 +15,8 @@ #ifndef __LINUX_BRIDGE_EBT_IP_H #define __LINUX_BRIDGE_EBT_IP_H +#include + #define EBT_IP_SOURCE 0x01 #define EBT_IP_DEST 0x02 #define EBT_IP_TOS 0x04 diff --git a/include/linux/netfilter_bridge/ebt_ip6.h b/include/linux/netfilter_bridge/ebt_ip6.h index 998e9d5a6b60..42b889682721 100644 --- a/include/linux/netfilter_bridge/ebt_ip6.h +++ b/include/linux/netfilter_bridge/ebt_ip6.h @@ -12,6 +12,8 @@ #ifndef __LINUX_BRIDGE_EBT_IP6_H #define __LINUX_BRIDGE_EBT_IP6_H +#include + #define EBT_IP6_SOURCE 0x01 #define EBT_IP6_DEST 0x02 #define EBT_IP6_TCLASS 0x04 diff --git a/include/linux/netfilter_bridge/ebt_limit.h b/include/linux/netfilter_bridge/ebt_limit.h index 721d51ffa513..66d80b30ba0e 100644 --- a/include/linux/netfilter_bridge/ebt_limit.h +++ b/include/linux/netfilter_bridge/ebt_limit.h @@ -1,6 +1,8 @@ #ifndef __LINUX_BRIDGE_EBT_LIMIT_H #define __LINUX_BRIDGE_EBT_LIMIT_H +#include + #define EBT_LIMIT_MATCH "limit" /* timings are in milliseconds. */ diff --git a/include/linux/netfilter_bridge/ebt_log.h b/include/linux/netfilter_bridge/ebt_log.h index 564beb4946ea..7e7f1d1fe494 100644 --- a/include/linux/netfilter_bridge/ebt_log.h +++ b/include/linux/netfilter_bridge/ebt_log.h @@ -1,6 +1,8 @@ #ifndef __LINUX_BRIDGE_EBT_LOG_H #define __LINUX_BRIDGE_EBT_LOG_H +#include + #define EBT_LOG_IP 0x01 /* if the frame is made by ip, log the ip information */ #define EBT_LOG_ARP 0x02 #define EBT_LOG_NFLOG 0x04 diff --git a/include/linux/netfilter_bridge/ebt_mark_m.h b/include/linux/netfilter_bridge/ebt_mark_m.h index 97b96c4b8db4..410f9e5a71d4 100644 --- a/include/linux/netfilter_bridge/ebt_mark_m.h +++ b/include/linux/netfilter_bridge/ebt_mark_m.h @@ -1,6 +1,8 @@ #ifndef __LINUX_BRIDGE_EBT_MARK_M_H #define __LINUX_BRIDGE_EBT_MARK_M_H +#include + #define EBT_MARK_AND 0x01 #define EBT_MARK_OR 0x02 #define EBT_MARK_MASK (EBT_MARK_AND | EBT_MARK_OR) diff --git a/include/linux/netfilter_bridge/ebt_nflog.h b/include/linux/netfilter_bridge/ebt_nflog.h index 477315bc3537..df829fce9125 100644 --- a/include/linux/netfilter_bridge/ebt_nflog.h +++ b/include/linux/netfilter_bridge/ebt_nflog.h @@ -1,6 +1,8 @@ #ifndef __LINUX_BRIDGE_EBT_NFLOG_H #define __LINUX_BRIDGE_EBT_NFLOG_H +#include + #define EBT_NFLOG_MASK 0x0 #define EBT_NFLOG_PREFIX_SIZE 64 diff --git a/include/linux/netfilter_bridge/ebt_pkttype.h b/include/linux/netfilter_bridge/ebt_pkttype.h index 7c0fb0fdcf14..c241badcd036 100644 --- a/include/linux/netfilter_bridge/ebt_pkttype.h +++ b/include/linux/netfilter_bridge/ebt_pkttype.h @@ -1,6 +1,8 @@ #ifndef __LINUX_BRIDGE_EBT_PKTTYPE_H #define __LINUX_BRIDGE_EBT_PKTTYPE_H +#include + struct ebt_pkttype_info { __u8 pkt_type; __u8 invert; diff --git a/include/linux/netfilter_bridge/ebt_stp.h b/include/linux/netfilter_bridge/ebt_stp.h index 13a0bd49a92a..1025b9f5fb7d 100644 --- a/include/linux/netfilter_bridge/ebt_stp.h +++ b/include/linux/netfilter_bridge/ebt_stp.h @@ -1,6 +1,8 @@ #ifndef __LINUX_BRIDGE_EBT_STP_H #define __LINUX_BRIDGE_EBT_STP_H +#include + #define EBT_STP_TYPE 0x0001 #define EBT_STP_FLAGS 0x0002 diff --git a/include/linux/netfilter_bridge/ebt_ulog.h b/include/linux/netfilter_bridge/ebt_ulog.h index de35a51a7e46..89a6becb5269 100644 --- a/include/linux/netfilter_bridge/ebt_ulog.h +++ b/include/linux/netfilter_bridge/ebt_ulog.h @@ -1,6 +1,8 @@ #ifndef _EBT_ULOG_H #define _EBT_ULOG_H +#include + #define EBT_ULOG_DEFAULT_NLGROUP 0 #define EBT_ULOG_DEFAULT_QTHRESHOLD 1 #define EBT_ULOG_MAXNLGROUPS 32 /* hardcoded netlink max */ diff --git a/include/linux/netfilter_bridge/ebt_vlan.h b/include/linux/netfilter_bridge/ebt_vlan.h index 48dffc1dad36..967d1d5cf98d 100644 --- a/include/linux/netfilter_bridge/ebt_vlan.h +++ b/include/linux/netfilter_bridge/ebt_vlan.h @@ -1,6 +1,8 @@ #ifndef __LINUX_BRIDGE_EBT_VLAN_H #define __LINUX_BRIDGE_EBT_VLAN_H +#include + #define EBT_VLAN_ID 0x01 #define EBT_VLAN_PRIO 0x02 #define EBT_VLAN_ENCAP 0x04 diff --git a/include/linux/netfilter_ipv4/ipt_CLUSTERIP.h b/include/linux/netfilter_ipv4/ipt_CLUSTERIP.h index 3114f06939ef..c6a204c97047 100644 --- a/include/linux/netfilter_ipv4/ipt_CLUSTERIP.h +++ b/include/linux/netfilter_ipv4/ipt_CLUSTERIP.h @@ -1,6 +1,8 @@ #ifndef _IPT_CLUSTERIP_H_target #define _IPT_CLUSTERIP_H_target +#include + enum clusterip_hashmode { CLUSTERIP_HASHMODE_SIP = 0, CLUSTERIP_HASHMODE_SIP_SPT, diff --git a/include/linux/netfilter_ipv4/ipt_ECN.h b/include/linux/netfilter_ipv4/ipt_ECN.h index c6e3e01b75e0..bb88d5315a4d 100644 --- a/include/linux/netfilter_ipv4/ipt_ECN.h +++ b/include/linux/netfilter_ipv4/ipt_ECN.h @@ -8,6 +8,8 @@ */ #ifndef _IPT_ECN_TARGET_H #define _IPT_ECN_TARGET_H + +#include #include #define IPT_ECN_IP_MASK (~XT_DSCP_MASK) diff --git a/include/linux/netfilter_ipv4/ipt_SAME.h b/include/linux/netfilter_ipv4/ipt_SAME.h index fa0ebeca5d95..5bca78267afd 100644 --- a/include/linux/netfilter_ipv4/ipt_SAME.h +++ b/include/linux/netfilter_ipv4/ipt_SAME.h @@ -1,6 +1,8 @@ #ifndef _IPT_SAME_H #define _IPT_SAME_H +#include + #define IPT_SAME_MAX_RANGE 10 #define IPT_SAME_NODST 0x01 diff --git a/include/linux/netfilter_ipv4/ipt_TTL.h b/include/linux/netfilter_ipv4/ipt_TTL.h index f6250e422d5e..f6ac169d92f9 100644 --- a/include/linux/netfilter_ipv4/ipt_TTL.h +++ b/include/linux/netfilter_ipv4/ipt_TTL.h @@ -4,6 +4,8 @@ #ifndef _IPT_TTL_H #define _IPT_TTL_H +#include + enum { IPT_TTL_SET = 0, IPT_TTL_INC, diff --git a/include/linux/netfilter_ipv4/ipt_addrtype.h b/include/linux/netfilter_ipv4/ipt_addrtype.h index f29c3cfcc240..0da42237c8da 100644 --- a/include/linux/netfilter_ipv4/ipt_addrtype.h +++ b/include/linux/netfilter_ipv4/ipt_addrtype.h @@ -1,6 +1,8 @@ #ifndef _IPT_ADDRTYPE_H #define _IPT_ADDRTYPE_H +#include + enum { IPT_ADDRTYPE_INVERT_SOURCE = 0x0001, IPT_ADDRTYPE_INVERT_DEST = 0x0002, diff --git a/include/linux/netfilter_ipv4/ipt_ah.h b/include/linux/netfilter_ipv4/ipt_ah.h index 8fea283ee62a..4e02bb0119e3 100644 --- a/include/linux/netfilter_ipv4/ipt_ah.h +++ b/include/linux/netfilter_ipv4/ipt_ah.h @@ -1,6 +1,8 @@ #ifndef _IPT_AH_H #define _IPT_AH_H +#include + struct ipt_ah { __u32 spis[2]; /* Security Parameter Index */ __u8 invflags; /* Inverse flags */ diff --git a/include/linux/netfilter_ipv4/ipt_ecn.h b/include/linux/netfilter_ipv4/ipt_ecn.h index 78b98aa8784d..eabf95fb7d3e 100644 --- a/include/linux/netfilter_ipv4/ipt_ecn.h +++ b/include/linux/netfilter_ipv4/ipt_ecn.h @@ -8,6 +8,8 @@ */ #ifndef _IPT_ECN_H #define _IPT_ECN_H + +#include #include #define IPT_ECN_IP_MASK (~XT_DSCP_MASK) diff --git a/include/linux/netfilter_ipv4/ipt_ttl.h b/include/linux/netfilter_ipv4/ipt_ttl.h index 93d9a06689a3..37bee4442486 100644 --- a/include/linux/netfilter_ipv4/ipt_ttl.h +++ b/include/linux/netfilter_ipv4/ipt_ttl.h @@ -4,6 +4,8 @@ #ifndef _IPT_TTL_H #define _IPT_TTL_H +#include + enum { IPT_TTL_EQ = 0, /* equals */ IPT_TTL_NE, /* not equals */ diff --git a/include/linux/netfilter_ipv6/ip6t_HL.h b/include/linux/netfilter_ipv6/ip6t_HL.h index 81cdaf0480e3..ebd8ead1bb63 100644 --- a/include/linux/netfilter_ipv6/ip6t_HL.h +++ b/include/linux/netfilter_ipv6/ip6t_HL.h @@ -5,6 +5,8 @@ #ifndef _IP6T_HL_H #define _IP6T_HL_H +#include + enum { IP6T_HL_SET = 0, IP6T_HL_INC, diff --git a/include/linux/netfilter_ipv6/ip6t_REJECT.h b/include/linux/netfilter_ipv6/ip6t_REJECT.h index b999aa4e5969..205ed62e4605 100644 --- a/include/linux/netfilter_ipv6/ip6t_REJECT.h +++ b/include/linux/netfilter_ipv6/ip6t_REJECT.h @@ -1,6 +1,8 @@ #ifndef _IP6T_REJECT_H #define _IP6T_REJECT_H +#include + enum ip6t_reject_with { IP6T_ICMP6_NO_ROUTE, IP6T_ICMP6_ADM_PROHIBITED, diff --git a/include/linux/netfilter_ipv6/ip6t_ah.h b/include/linux/netfilter_ipv6/ip6t_ah.h index a602c165edd1..5da2b65cb3ad 100644 --- a/include/linux/netfilter_ipv6/ip6t_ah.h +++ b/include/linux/netfilter_ipv6/ip6t_ah.h @@ -1,6 +1,8 @@ #ifndef _IP6T_AH_H #define _IP6T_AH_H +#include + struct ip6t_ah { __u32 spis[2]; /* Security Parameter Index */ __u32 hdrlen; /* Header Length */ diff --git a/include/linux/netfilter_ipv6/ip6t_frag.h b/include/linux/netfilter_ipv6/ip6t_frag.h index 538b31ef5e3d..b47f61b9e082 100644 --- a/include/linux/netfilter_ipv6/ip6t_frag.h +++ b/include/linux/netfilter_ipv6/ip6t_frag.h @@ -1,6 +1,8 @@ #ifndef _IP6T_FRAG_H #define _IP6T_FRAG_H +#include + struct ip6t_frag { __u32 ids[2]; /* Security Parameter Index */ __u32 hdrlen; /* Header Length */ diff --git a/include/linux/netfilter_ipv6/ip6t_hl.h b/include/linux/netfilter_ipv6/ip6t_hl.h index c6fddcb971da..6e76dbc6c19a 100644 --- a/include/linux/netfilter_ipv6/ip6t_hl.h +++ b/include/linux/netfilter_ipv6/ip6t_hl.h @@ -5,6 +5,8 @@ #ifndef _IP6T_HL_H #define _IP6T_HL_H +#include + enum { IP6T_HL_EQ = 0, /* equals */ IP6T_HL_NE, /* not equals */ diff --git a/include/linux/netfilter_ipv6/ip6t_ipv6header.h b/include/linux/netfilter_ipv6/ip6t_ipv6header.h index 73d53bd3ff62..efae3a20c214 100644 --- a/include/linux/netfilter_ipv6/ip6t_ipv6header.h +++ b/include/linux/netfilter_ipv6/ip6t_ipv6header.h @@ -8,6 +8,8 @@ on whether they contain certain headers */ #ifndef __IPV6HEADER_H #define __IPV6HEADER_H +#include + struct ip6t_ipv6header_info { __u8 matchflags; __u8 invflags; diff --git a/include/linux/netfilter_ipv6/ip6t_mh.h b/include/linux/netfilter_ipv6/ip6t_mh.h index 98c8cf685eea..a7729a5025cd 100644 --- a/include/linux/netfilter_ipv6/ip6t_mh.h +++ b/include/linux/netfilter_ipv6/ip6t_mh.h @@ -1,6 +1,8 @@ #ifndef _IP6T_MH_H #define _IP6T_MH_H +#include + /* MH matching stuff */ struct ip6t_mh { __u8 types[2]; /* MH type range */ diff --git a/include/linux/netfilter_ipv6/ip6t_opts.h b/include/linux/netfilter_ipv6/ip6t_opts.h index 405d309cd741..17d419a811fd 100644 --- a/include/linux/netfilter_ipv6/ip6t_opts.h +++ b/include/linux/netfilter_ipv6/ip6t_opts.h @@ -1,6 +1,8 @@ #ifndef _IP6T_OPTS_H #define _IP6T_OPTS_H +#include + #define IP6T_OPTS_OPTSNR 16 struct ip6t_opts { diff --git a/include/linux/netfilter_ipv6/ip6t_rt.h b/include/linux/netfilter_ipv6/ip6t_rt.h index e8dad20acd37..7605a5ff81cd 100644 --- a/include/linux/netfilter_ipv6/ip6t_rt.h +++ b/include/linux/netfilter_ipv6/ip6t_rt.h @@ -1,6 +1,7 @@ #ifndef _IP6T_RT_H #define _IP6T_RT_H +#include /*#include */ #define IP6T_RT_HOPS 16 -- cgit v1.2.3 From a0a5b676401ee97a295dd9fcd7a374e883d48a8a Mon Sep 17 00:00:00 2001 From: Ky Srinivasan Date: Thu, 16 Dec 2010 18:35:00 -0700 Subject: Connector: Add an index to support key/value pair (KVP) functionality Added a connector index to support key value/pair (KVP) functionality for Linux guests hosted on a HyperV platform. Signed-off-by: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman --- include/linux/connector.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/connector.h b/include/linux/connector.h index 7e8ca75d2dad..2e9759cdd275 100644 --- a/include/linux/connector.h +++ b/include/linux/connector.h @@ -42,8 +42,9 @@ #define CN_VAL_DM_USERSPACE_LOG 0x1 #define CN_IDX_DRBD 0x8 #define CN_VAL_DRBD 0x1 +#define CN_KVP_IDX 0x9 /* HyperV KVP */ -#define CN_NETLINK_USERS 8 +#define CN_NETLINK_USERS 9 /* * Maximum connector's message size. -- cgit v1.2.3 From d18046b3cd989c06d2ad8d615e57c3cf63c63b67 Mon Sep 17 00:00:00 2001 From: Shan Wei Date: Wed, 19 Jan 2011 23:12:54 +0000 Subject: dccp: clean up unused DCCP_STATE_MASK definition Remove unused DCCP_STATE_MASK macro. Signed-off-by: Shan Wei Acked-by: Gerrit Renker Signed-off-by: David S. Miller --- include/linux/dccp.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/dccp.h b/include/linux/dccp.h index 010e2d87ed75..d638e85dc501 100644 --- a/include/linux/dccp.h +++ b/include/linux/dccp.h @@ -279,8 +279,6 @@ enum dccp_state { DCCP_MAX_STATES }; -#define DCCP_STATE_MASK 0x1f - enum { DCCPF_OPEN = TCPF_ESTABLISHED, DCCPF_REQUESTING = TCPF_SYN_SENT, -- cgit v1.2.3 From ca3e021417eed30ec2b64ce88eb0acf64aa9bc29 Mon Sep 17 00:00:00 2001 From: KAMEZAWA Hiroyuki Date: Thu, 20 Jan 2011 14:44:24 -0800 Subject: memcg: fix USED bit handling at uncharge in THP Now, under THP: at charge: - PageCgroupUsed bit is set to all page_cgroup on a hugepage. ....set to 512 pages. at uncharge - PageCgroupUsed bit is unset on the head page. So, some pages will remain with "Used" bit. This patch fixes that Used bit is set only to the head page. Used bits for tail pages will be set at splitting if necessary. This patch adds this lock order: compound_lock() -> page_cgroup_move_lock(). [akpm@linux-foundation.org: fix warning] Signed-off-by: KAMEZAWA Hiroyuki Cc: Daisuke Nishimura Cc: Balbir Singh Cc: Johannes Weiner Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/memcontrol.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include/linux') diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 6a576f989437..f512e189be5a 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -146,6 +146,10 @@ unsigned long mem_cgroup_soft_limit_reclaim(struct zone *zone, int order, gfp_t gfp_mask); u64 mem_cgroup_get_limit(struct mem_cgroup *mem); +#ifdef CONFIG_TRANSPARENT_HUGEPAGE +void mem_cgroup_split_huge_fixup(struct page *head, struct page *tail); +#endif + #else /* CONFIG_CGROUP_MEM_RES_CTLR */ struct mem_cgroup; @@ -335,6 +339,11 @@ u64 mem_cgroup_get_limit(struct mem_cgroup *mem) return 0; } +static inline void mem_cgroup_split_huge_fixup(struct page *head, + struct page *tail) +{ +} + #endif /* CONFIG_CGROUP_MEM_CONT */ #endif /* _LINUX_MEMCONTROL_H */ -- cgit v1.2.3 From 2d6d9fd3a54a28c6f67f26eb6c74803307a1b11e Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Wed, 19 Jan 2011 22:27:14 +0100 Subject: ACPI: Introduce acpi_os_ioremap() Commit ca9b600be38c ("ACPI / PM: Make suspend_nvs_save() use acpi_os_map_memory()") attempted to prevent the code in osl.c and nvs.c from using different ioremap() variants by making the latter use acpi_os_map_memory() for mapping the NVS pages. However, that also requires acpi_os_unmap_memory() to be used for unmapping them, which causes synchronize_rcu() to be executed many times in a row unnecessarily and introduces substantial delays during resume on some systems. Instead of using acpi_os_map_memory() for mapping the NVS pages in nvs.c introduce acpi_os_ioremap() calling ioremap_cache() and make the code in both osl.c and nvs.c use it. Reported-by: Jeff Chua Signed-off-by: Rafael J. Wysocki Signed-off-by: Linus Torvalds --- include/linux/acpi.h | 3 --- include/linux/acpi_io.h | 16 ++++++++++++++++ 2 files changed, 16 insertions(+), 3 deletions(-) create mode 100644 include/linux/acpi_io.h (limited to 'include/linux') diff --git a/include/linux/acpi.h b/include/linux/acpi.h index eb176bb1b15b..a2e910e01293 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -306,9 +306,6 @@ extern acpi_status acpi_pci_osc_control_set(acpi_handle handle, u32 *mask, u32 req); extern void acpi_early_init(void); -int acpi_os_map_generic_address(struct acpi_generic_address *addr); -void acpi_os_unmap_generic_address(struct acpi_generic_address *addr); - #else /* !CONFIG_ACPI */ #define acpi_disabled 1 diff --git a/include/linux/acpi_io.h b/include/linux/acpi_io.h new file mode 100644 index 000000000000..7180013a4a3a --- /dev/null +++ b/include/linux/acpi_io.h @@ -0,0 +1,16 @@ +#ifndef _ACPI_IO_H_ +#define _ACPI_IO_H_ + +#include +#include + +static inline void __iomem *acpi_os_ioremap(acpi_physical_address phys, + acpi_size size) +{ + return ioremap_cache(phys, size); +} + +int acpi_os_map_generic_address(struct acpi_generic_address *addr); +void acpi_os_unmap_generic_address(struct acpi_generic_address *addr); + +#endif -- cgit v1.2.3 From 686a2955531312dab77bb6f1e8602787d85e47d8 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Thu, 20 Jan 2011 22:47:32 -0800 Subject: net: Add safe reverse SKB queue walkers. Signed-off-by: David S. Miller --- include/linux/skbuff.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include/linux') diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index bf221d65d9ad..6e946da9d1d6 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -1801,6 +1801,15 @@ static inline int pskb_trim_rcsum(struct sk_buff *skb, unsigned int len) prefetch(skb->prev), (skb != (struct sk_buff *)(queue)); \ skb = skb->prev) +#define skb_queue_reverse_walk_safe(queue, skb, tmp) \ + for (skb = (queue)->prev, tmp = skb->prev; \ + skb != (struct sk_buff *)(queue); \ + skb = tmp, tmp = skb->prev) + +#define skb_queue_reverse_walk_from_safe(queue, skb, tmp) \ + for (tmp = skb->prev; \ + skb != (struct sk_buff *)(queue); \ + skb = tmp, tmp = skb->prev) static inline bool skb_has_frag_list(const struct sk_buff *skb) { -- cgit v1.2.3 From 1c77ff22f539ceaa64ea43d6a26d867e84602cb7 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Wed, 19 Jan 2011 19:41:35 +0100 Subject: genirq: Remove __do_IRQ All architectures are finally converted. Remove the cruft. Signed-off-by: Thomas Gleixner Cc: Richard Henderson Cc: Mike Frysinger Cc: David Howells Cc: Tony Luck Cc: Greg Ungerer Cc: Michal Simek Acked-by: David Howells Cc: Kyle McMartin Acked-by: Benjamin Herrenschmidt Cc: Chen Liqin Cc: "David S. Miller" Cc: Chris Metcalf Cc: Jeff Dike --- include/linux/irqdesc.h | 14 -------------- 1 file changed, 14 deletions(-) (limited to 'include/linux') diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h index 6a64c6fa81af..c1a95b7b58de 100644 --- a/include/linux/irqdesc.h +++ b/include/linux/irqdesc.h @@ -100,13 +100,6 @@ static inline struct irq_desc *move_irq_desc(struct irq_desc *desc, int node) #define get_irq_desc_data(desc) ((desc)->irq_data.handler_data) #define get_irq_desc_msi(desc) ((desc)->irq_data.msi_desc) -/* - * Monolithic do_IRQ implementation. - */ -#ifndef CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ -extern unsigned int __do_IRQ(unsigned int irq); -#endif - /* * Architectures call this to let the generic IRQ layer * handle an interrupt. If the descriptor is attached to an @@ -115,14 +108,7 @@ extern unsigned int __do_IRQ(unsigned int irq); */ static inline void generic_handle_irq_desc(unsigned int irq, struct irq_desc *desc) { -#ifdef CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ desc->handle_irq(irq, desc); -#else - if (likely(desc->handle_irq)) - desc->handle_irq(irq, desc); - else - __do_IRQ(irq); -#endif } static inline void generic_handle_irq(unsigned int irq) -- cgit v1.2.3 From c9e358dfc4a8cb2227172ef77908c2e0ee17bcb9 Mon Sep 17 00:00:00 2001 From: Grant Likely Date: Fri, 21 Jan 2011 09:24:48 -0700 Subject: driver-core: remove conditionals around devicetree pointers Having conditional around the of_match_table and the of_node pointers turns out to make driver code use ugly #ifdef blocks. Drop the conditionals and remove the #ifdef blocks from the affected drivers. Also tidy up minor whitespace issues within the same hunks. Signed-off-by: Grant Likely Acked-by: Greg Kroah-Hartman --- include/linux/device.h | 7 ++----- include/linux/i2c.h | 2 -- include/linux/of.h | 4 ++-- 3 files changed, 4 insertions(+), 9 deletions(-) (limited to 'include/linux') diff --git a/include/linux/device.h b/include/linux/device.h index 1bf5cf0b4513..ca5d25225aab 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -128,9 +128,7 @@ struct device_driver { bool suppress_bind_attrs; /* disables bind/unbind via sysfs */ -#if defined(CONFIG_OF) const struct of_device_id *of_match_table; -#endif int (*probe) (struct device *dev); int (*remove) (struct device *dev); @@ -441,9 +439,8 @@ struct device { override */ /* arch specific additions */ struct dev_archdata archdata; -#ifdef CONFIG_OF - struct device_node *of_node; -#endif + + struct device_node *of_node; /* associated device tree node */ dev_t devt; /* dev_t, creates the sysfs "dev" */ diff --git a/include/linux/i2c.h b/include/linux/i2c.h index 903576df88dc..06a8d9c7de98 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -258,9 +258,7 @@ struct i2c_board_info { unsigned short addr; void *platform_data; struct dev_archdata *archdata; -#ifdef CONFIG_OF struct device_node *of_node; -#endif int irq; }; diff --git a/include/linux/of.h b/include/linux/of.h index cad7cf0ab278..d9dd664a6a9c 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -23,8 +23,6 @@ #include -#ifdef CONFIG_OF - typedef u32 phandle; typedef u32 ihandle; @@ -65,6 +63,8 @@ struct device_node { #endif }; +#ifdef CONFIG_OF + /* Pointer for first entry in chain of all nodes. */ extern struct device_node *allnodes; extern struct device_node *of_chosen; -- cgit v1.2.3 From 1daeddd5962acad1bea55e524fc0fadf32654a21 Mon Sep 17 00:00:00 2001 From: John Stultz Date: Thu, 13 Jan 2011 09:30:49 -0800 Subject: rtc: Cleanup removed UIE emulation declaration rtc_dev_update_irq_enable_emul was removed in commit 042620a018afcfba1d678062b62e463b9e43a68d (UIE emulation is now handled via hrtimer), but the declaration was missed. This patch cleans it up. Signed-off-by: John Stultz LKML-Reference: <1294939849-20608-1-git-send-email-john.stultz@linaro.org> Signed-off-by: Thomas Gleixner --- include/linux/rtc.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/rtc.h b/include/linux/rtc.h index 3c995b4d742c..ea760698e6fe 100644 --- a/include/linux/rtc.h +++ b/include/linux/rtc.h @@ -235,8 +235,6 @@ extern int rtc_irq_set_freq(struct rtc_device *rtc, struct rtc_task *task, int freq); extern int rtc_update_irq_enable(struct rtc_device *rtc, unsigned int enabled); extern int rtc_alarm_irq_enable(struct rtc_device *rtc, unsigned int enabled); -extern int rtc_dev_update_irq_enable_emul(struct rtc_device *rtc, - unsigned int enabled); void rtc_aie_update_irq(void *private); void rtc_uie_update_irq(void *private); -- cgit v1.2.3 From aa0be0f4659f91f31e45adc422b1788cb36ffddc Mon Sep 17 00:00:00 2001 From: John Stultz Date: Thu, 20 Jan 2011 15:26:12 -0800 Subject: RTC: Propagate error handling via rtc_timer_enqueue properly In cases where RTC hardware does not support alarms, the virtualized RTC interfaces did not have a way to propagate the error up to userland. This patch extends rtc_timer_enqueue so it catches errors from the hardware and returns them upwards to the virtualized interfaces. To simplify error handling, it also internalizes the management of the timer->enabled bit into rtc_timer_enqueue and rtc_timer_remove. Also makes rtc_timer_enqueue and rtc_timer_remove static. Reported-by: David Daney Reported-by: Andreas Schwab Reported-by: Geert Uytterhoeven Diagnosed-by: David Daney Tested-by: David Daney Signed-off-by: John Stultz LKML-Reference: <1295565973-14358-1-git-send-email-john.stultz@linaro.org> Signed-off-by: Thomas Gleixner --- include/linux/rtc.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/rtc.h b/include/linux/rtc.h index ea760698e6fe..a0b639f8e805 100644 --- a/include/linux/rtc.h +++ b/include/linux/rtc.h @@ -244,8 +244,6 @@ int rtc_register(rtc_task_t *task); int rtc_unregister(rtc_task_t *task); int rtc_control(rtc_task_t *t, unsigned int cmd, unsigned long arg); -void rtc_timer_enqueue(struct rtc_device *rtc, struct rtc_timer *timer); -void rtc_timer_remove(struct rtc_device *rtc, struct rtc_timer *timer); void rtc_timer_init(struct rtc_timer *timer, void (*f)(void* p), void* data); int rtc_timer_start(struct rtc_device *rtc, struct rtc_timer* timer, ktime_t expires, ktime_t period); -- cgit v1.2.3 From 3dece370ecc7c6152b3fdd21c6de28179f6e643d Mon Sep 17 00:00:00 2001 From: Michal Simek Date: Fri, 21 Jan 2011 08:49:56 +0100 Subject: mm: System without MMU do not need pte_mkwrite The patch "thp: export maybe_mkwrite" (commit 14fd403f2146) breaks systems without MMU. Error log: CC arch/microblaze/mm/init.o In file included from include/linux/mman.h:14, from arch/microblaze/mm/consistent.c:24: include/linux/mm.h: In function 'maybe_mkwrite': include/linux/mm.h:482: error: implicit declaration of function 'pte_mkwrite' include/linux/mm.h:482: error: incompatible types in assignment Signed-off-by: Michal Simek CC: Andrea Arcangeli Reviewed-by: Rik van Riel CC: Andrew Morton CC: Ingo Molnar Signed-off-by: Linus Torvalds --- include/linux/mm.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index 956a35532f47..f6385fc17ad4 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -470,6 +470,7 @@ static inline void set_compound_order(struct page *page, unsigned long order) page[1].lru.prev = (void *)order; } +#ifdef CONFIG_MMU /* * Do pte_mkwrite, but only if the vma says VM_WRITE. We do this when * servicing faults for write access. In the normal case, do always want @@ -482,6 +483,7 @@ static inline pte_t maybe_mkwrite(pte_t pte, struct vm_area_struct *vma) pte = pte_mkwrite(pte); return pte; } +#endif /* * Multiple processes may "see" the same page. E.g. for untouched -- cgit v1.2.3 From cd7eab44e9946c28d595abe3e9a43e945bc49141 Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Wed, 19 Jan 2011 21:01:44 +0000 Subject: genirq: Add IRQ affinity notifiers When initiating I/O on a multiqueue and multi-IRQ device, we may want to select a queue for which the response will be handled on the same or a nearby CPU. This requires a reverse-map of IRQ affinity. Add a notification mechanism to support this. This is based closely on work by Thomas Gleixner . Signed-off-by: Ben Hutchings Cc: linux-net-drivers@solarflare.com Cc: Tom Herbert Cc: David Miller LKML-Reference: <1295470904.11126.84.camel@bwh-desktop> Signed-off-by: Thomas Gleixner --- include/linux/interrupt.h | 33 ++++++++++++++++++++++++++++++++- include/linux/irqdesc.h | 3 +++ 2 files changed, 35 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h index 55e0d4253e49..63c5ad78e37c 100644 --- a/include/linux/interrupt.h +++ b/include/linux/interrupt.h @@ -14,6 +14,8 @@ #include #include #include +#include +#include #include #include @@ -240,6 +242,35 @@ extern int irq_can_set_affinity(unsigned int irq); extern int irq_select_affinity(unsigned int irq); extern int irq_set_affinity_hint(unsigned int irq, const struct cpumask *m); + +/** + * struct irq_affinity_notify - context for notification of IRQ affinity changes + * @irq: Interrupt to which notification applies + * @kref: Reference count, for internal use + * @work: Work item, for internal use + * @notify: Function to be called on change. This will be + * called in process context. + * @release: Function to be called on release. This will be + * called in process context. Once registered, the + * structure must only be freed when this function is + * called or later. + */ +struct irq_affinity_notify { + unsigned int irq; + struct kref kref; + struct work_struct work; + void (*notify)(struct irq_affinity_notify *, const cpumask_t *mask); + void (*release)(struct kref *ref); +}; + +extern int +irq_set_affinity_notifier(unsigned int irq, struct irq_affinity_notify *notify); + +static inline void irq_run_affinity_notifiers(void) +{ + flush_scheduled_work(); +} + #else /* CONFIG_SMP */ static inline int irq_set_affinity(unsigned int irq, const struct cpumask *m) @@ -255,7 +286,7 @@ static inline int irq_can_set_affinity(unsigned int irq) static inline int irq_select_affinity(unsigned int irq) { return 0; } static inline int irq_set_affinity_hint(unsigned int irq, - const struct cpumask *m) + const struct cpumask *m) { return -EINVAL; } diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h index c1a95b7b58de..bfef56dadddb 100644 --- a/include/linux/irqdesc.h +++ b/include/linux/irqdesc.h @@ -8,6 +8,7 @@ * For now it's included from */ +struct irq_affinity_notify; struct proc_dir_entry; struct timer_rand_state; /** @@ -24,6 +25,7 @@ struct timer_rand_state; * @last_unhandled: aging timer for unhandled count * @irqs_unhandled: stats field for spurious unhandled interrupts * @lock: locking for SMP + * @affinity_notify: context for notification of affinity changes * @pending_mask: pending rebalanced interrupts * @threads_active: number of irqaction threads currently running * @wait_for_threads: wait queue for sync_irq to wait for threaded handlers @@ -70,6 +72,7 @@ struct irq_desc { raw_spinlock_t lock; #ifdef CONFIG_SMP const struct cpumask *affinity_hint; + struct irq_affinity_notify *affinity_notify; #ifdef CONFIG_GENERIC_PENDING_IRQ cpumask_var_t pending_mask; #endif -- cgit v1.2.3 From d14fc1a74e846d7851f24fc9519fe87dc12a1231 Mon Sep 17 00:00:00 2001 From: Libor Pechacek Date: Fri, 14 Jan 2011 14:30:21 +0100 Subject: USB: serial: handle Data Carrier Detect changes Alan's commit 335f8514f200e63d689113d29cb7253a5c282967 introduced .carrier_raised function in several drivers. That also means tty_port_block_til_ready can now suspend the process trying to open the serial port when Carrier Detect is low and put it into tty_port.open_wait queue. We need to wake up the process when Carrier Detect goes high and trigger TTY hangup when CD goes low. Some of the devices do not report modem status line changes, or at least we don't understand the status message, so for those we remove .carrier_raised again. Signed-off-by: Libor Pechacek Cc: stable Signed-off-by: Greg Kroah-Hartman --- include/linux/usb/serial.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb/serial.h b/include/linux/usb/serial.h index 16d682f4f7c3..c9049139a7a5 100644 --- a/include/linux/usb/serial.h +++ b/include/linux/usb/serial.h @@ -347,6 +347,9 @@ extern int usb_serial_generic_prepare_write_buffer(struct usb_serial_port *port, extern int usb_serial_handle_sysrq_char(struct usb_serial_port *port, unsigned int ch); extern int usb_serial_handle_break(struct usb_serial_port *port); +extern void usb_serial_handle_dcd_change(struct usb_serial_port *usb_port, + struct tty_struct *tty, + unsigned int status); extern int usb_serial_bus_register(struct usb_serial_driver *device); -- cgit v1.2.3 From 63310467a3d1ed6a0460ec1f4268126cd1ceec2e Mon Sep 17 00:00:00 2001 From: Christoph Lameter Date: Thu, 20 Jan 2011 11:12:26 -0600 Subject: mm: Remove support for kmem_cache_name() The last user was ext4 and Eric Sandeen removed the call in a recent patch. See the following URL for the discussion: http://marc.info/?l=linux-ext4&m=129546975702198&w=2 Signed-off-by: Christoph Lameter Signed-off-by: Pekka Enberg --- include/linux/slab.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/slab.h b/include/linux/slab.h index fa9086647eb7..ad4dd1c8d30a 100644 --- a/include/linux/slab.h +++ b/include/linux/slab.h @@ -105,7 +105,6 @@ void kmem_cache_destroy(struct kmem_cache *); int kmem_cache_shrink(struct kmem_cache *); void kmem_cache_free(struct kmem_cache *, void *); unsigned int kmem_cache_size(struct kmem_cache *); -const char *kmem_cache_name(struct kmem_cache *); /* * Please use this macro to create slab caches. Simply specify the -- cgit v1.2.3 From e94965ed5beb23c6fabf7ed31f625e66d7ff28de Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Wed, 15 Dec 2010 14:00:19 -0800 Subject: module: show version information for built-in modules in sysfs Currently only drivers that are built as modules have their versions shown in /sys/module//version, but this information might also be useful for built-in drivers as well. This especially important for drivers that do not define any parameters - such drivers, if built-in, are completely invisible from userspace. This patch changes MODULE_VERSION() macro so that in case when we are compiling built-in module, version information is stored in a separate section. Kernel then uses this data to create 'version' sysfs attribute in the same fashion it creates attributes for module parameters. Signed-off-by: Dmitry Torokhov Signed-off-by: Rusty Russell --- include/linux/module.h | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) (limited to 'include/linux') diff --git a/include/linux/module.h b/include/linux/module.h index 8b17fd8c790d..50efcd3ae850 100644 --- a/include/linux/module.h +++ b/include/linux/module.h @@ -58,6 +58,12 @@ struct module_attribute { void (*free)(struct module *); }; +struct module_version_attribute { + struct module_attribute mattr; + const char *module_name; + const char *version; +}; + struct module_kobject { struct kobject kobj; @@ -161,7 +167,28 @@ extern struct module __this_module; Using this automatically adds a checksum of the .c files and the local headers in "srcversion". */ + +#ifdef MODULE #define MODULE_VERSION(_version) MODULE_INFO(version, _version) +#else +#define MODULE_VERSION(_version) \ + extern ssize_t __modver_version_show(struct module_attribute *, \ + struct module *, char *); \ + static struct module_version_attribute __modver_version_attr \ + __used \ + __attribute__ ((__section__ ("__modver"),aligned(sizeof(void *)))) \ + = { \ + .mattr = { \ + .attr = { \ + .name = "version", \ + .mode = S_IRUGO, \ + }, \ + .show = __modver_version_show, \ + }, \ + .module_name = KBUILD_MODNAME, \ + .version = _version, \ + } +#endif /* Optional firmware file (or files) needed by the module * format is simply firmware file name. Multiple firmware -- cgit v1.2.3 From 3b90a5b292321b2acac3921f77046ae195aef53f Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Mon, 24 Jan 2011 14:32:51 -0600 Subject: module: fix linker error for MODULE_VERSION when !MODULE and CONFIG_SYSFS=n lib/built-in.o:(__modver+0x8): undefined reference to `__modver_version_show' lib/built-in.o:(__modver+0x2c): undefined reference to `__modver_version_show' Simplest to just not emit anything: if they've disabled SYSFS they probably want the smallest kernel possible. Reported-by: Randy Dunlap Signed-off-by: Rusty Russell --- include/linux/module.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/module.h b/include/linux/module.h index 50efcd3ae850..e7c6385c6683 100644 --- a/include/linux/module.h +++ b/include/linux/module.h @@ -168,7 +168,7 @@ extern struct module __this_module; local headers in "srcversion". */ -#ifdef MODULE +#if defined(MODULE) || !defined(CONFIG_SYSFS) #define MODULE_VERSION(_version) MODULE_INFO(version, _version) #else #define MODULE_VERSION(_version) \ -- cgit v1.2.3 From b75be4204e7871869b2c268c00783703197aaa7d Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Wed, 5 Jan 2011 13:27:04 +0100 Subject: param: add null statement to compiled-in module params Add an unused struct declaration statement requiring a terminating semicolon to the compile-in case to provoke an error if __MODULE_INFO() is used without the terminating semicolon. Previously MODULE_ALIAS("foo") (no semicolon) compiled fine if MODULE was not selected. Cc: Dan Carpenter Signed-off-by: Linus Walleij Signed-off-by: Rusty Russell --- include/linux/moduleparam.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/moduleparam.h b/include/linux/moduleparam.h index 112adf8bd47d..07b41951e3fa 100644 --- a/include/linux/moduleparam.h +++ b/include/linux/moduleparam.h @@ -16,15 +16,17 @@ /* Chosen so that structs with an unsigned long line up. */ #define MAX_PARAM_PREFIX_LEN (64 - sizeof(unsigned long)) -#ifdef MODULE #define ___module_cat(a,b) __mod_ ## a ## b #define __module_cat(a,b) ___module_cat(a,b) +#ifdef MODULE #define __MODULE_INFO(tag, name, info) \ static const char __module_cat(name,__LINE__)[] \ __used __attribute__((section(".modinfo"), unused, aligned(1))) \ = __stringify(tag) "=" info #else /* !MODULE */ -#define __MODULE_INFO(tag, name, info) +/* This struct is here for syntactic coherency, it is not used */ +#define __MODULE_INFO(tag, name, info) \ + struct __module_cat(name,__LINE__) {} #endif #define __MODULE_PARM_TYPE(name, _type) \ __MODULE_INFO(parmtype, name##type, #name ":" _type) -- cgit v1.2.3 From 7ef88ad561457c0346355dfd1f53e503ddfde719 Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Mon, 24 Jan 2011 14:45:10 -0600 Subject: BUILD_BUG_ON: make it handle more cases BUILD_BUG_ON used to use the optimizer to do code elimination or fail at link time; it was changed to first the size of a negative array (a nicer compile time error), then (in 8c87df457cb58fe75b9b893007917cf8095660a0) to a bitfield. This forced us to change some non-constant cases to MAYBE_BUILD_BUG_ON(); as Jan points out in that commit, it didn't work as intended anyway. bitfields: needs a literal constant at parse time, and can't be put under "if (__builtin_constant_p(x))" for example. negative array: can handle anything, but if the compiler can't tell it's a constant, silently has no effect. link time: breaks link if the compiler can't determine the value, but the linker output is not usually as informative as a compiler error. If we use the negative-array-size method *and* the link time trick, we get the ability to use BUILD_BUG_ON() under __builtin_constant_p() branches, and maximal ability for the compiler to detect errors at build time. We also document it thoroughly. Signed-off-by: Rusty Russell Cc: Jan Beulich Acked-by: Hollis Blanchard --- include/linux/kernel.h | 33 +++++++++++++++++++++++++++------ 1 file changed, 27 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/kernel.h b/include/linux/kernel.h index d07d8057e440..864712f3653d 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -575,12 +575,6 @@ struct sysinfo { char _f[20-2*sizeof(long)-sizeof(int)]; /* Padding: libc5 uses this.. */ }; -/* Force a compilation error if condition is true */ -#define BUILD_BUG_ON(condition) ((void)BUILD_BUG_ON_ZERO(condition)) - -/* Force a compilation error if condition is constant and true */ -#define MAYBE_BUILD_BUG_ON(cond) ((void)sizeof(char[1 - 2 * !!(cond)])) - /* Force a compilation error if a constant expression is not a power of 2 */ #define BUILD_BUG_ON_NOT_POWER_OF_2(n) \ BUILD_BUG_ON((n) == 0 || (((n) & ((n) - 1)) != 0)) @@ -592,6 +586,33 @@ struct sysinfo { #define BUILD_BUG_ON_ZERO(e) (sizeof(struct { int:-!!(e); })) #define BUILD_BUG_ON_NULL(e) ((void *)sizeof(struct { int:-!!(e); })) +/** + * BUILD_BUG_ON - break compile if a condition is true. + * @cond: the condition which the compiler should know is false. + * + * If you have some code which relies on certain constants being equal, or + * other compile-time-evaluated condition, you should use BUILD_BUG_ON to + * detect if someone changes it. + * + * The implementation uses gcc's reluctance to create a negative array, but + * gcc (as of 4.4) only emits that error for obvious cases (eg. not arguments + * to inline functions). So as a fallback we use the optimizer; if it can't + * prove the condition is false, it will cause a link error on the undefined + * "__build_bug_on_failed". This error message can be harder to track down + * though, hence the two different methods. + */ +#ifndef __OPTIMIZE__ +#define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)])) +#else +extern int __build_bug_on_failed; +#define BUILD_BUG_ON(condition) \ + do { \ + ((void)sizeof(char[1 - 2*!!(condition)])); \ + if (condition) __build_bug_on_failed = 1; \ + } while(0) +#endif +#define MAYBE_BUILD_BUG_ON(condition) BUILD_BUG_ON(condition) + /* Trap pasters of __FUNCTION__ at compile-time */ #define __FUNCTION__ (__func__) -- cgit v1.2.3 From 1765e3a4933ea0870fabd755feffc5473c4363ce Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Mon, 24 Jan 2011 14:45:10 -0600 Subject: Remove MAYBE_BUILD_BUG_ON Now BUILD_BUG_ON() can handle optimizable constants, we don't need MAYBE_BUILD_BUG_ON any more. Signed-off-by: Rusty Russell --- include/linux/gfp.h | 2 +- include/linux/kernel.h | 1 - include/linux/kmemcheck.h | 2 +- include/linux/virtio_config.h | 5 ++++- 4 files changed, 6 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/gfp.h b/include/linux/gfp.h index a3b148a91874..0b84c61607e8 100644 --- a/include/linux/gfp.h +++ b/include/linux/gfp.h @@ -249,7 +249,7 @@ static inline enum zone_type gfp_zone(gfp_t flags) ((1 << ZONES_SHIFT) - 1); if (__builtin_constant_p(bit)) - MAYBE_BUILD_BUG_ON((GFP_ZONE_BAD >> bit) & 1); + BUILD_BUG_ON((GFP_ZONE_BAD >> bit) & 1); else { #ifdef CONFIG_DEBUG_VM BUG_ON((GFP_ZONE_BAD >> bit) & 1); diff --git a/include/linux/kernel.h b/include/linux/kernel.h index 864712f3653d..e2f4d6af2125 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -611,7 +611,6 @@ extern int __build_bug_on_failed; if (condition) __build_bug_on_failed = 1; \ } while(0) #endif -#define MAYBE_BUILD_BUG_ON(condition) BUILD_BUG_ON(condition) /* Trap pasters of __FUNCTION__ at compile-time */ #define __FUNCTION__ (__func__) diff --git a/include/linux/kmemcheck.h b/include/linux/kmemcheck.h index 08d7dc4ddf40..39f8453239f7 100644 --- a/include/linux/kmemcheck.h +++ b/include/linux/kmemcheck.h @@ -76,7 +76,7 @@ bool kmemcheck_is_obj_initialized(unsigned long addr, size_t size); \ _n = (long) &((ptr)->name##_end) \ - (long) &((ptr)->name##_begin); \ - MAYBE_BUILD_BUG_ON(_n < 0); \ + BUILD_BUG_ON(_n < 0); \ \ kmemcheck_mark_initialized(&((ptr)->name##_begin), _n); \ } while (0) diff --git a/include/linux/virtio_config.h b/include/linux/virtio_config.h index 0093dd7c1d6f..800617b4ddd5 100644 --- a/include/linux/virtio_config.h +++ b/include/linux/virtio_config.h @@ -109,7 +109,10 @@ static inline bool virtio_has_feature(const struct virtio_device *vdev, unsigned int fbit) { /* Did you forget to fix assumptions on max features? */ - MAYBE_BUILD_BUG_ON(fbit >= 32); + if (__builtin_constant_p(fbit)) + BUILD_BUG_ON(fbit >= 32); + else + BUG_ON(fbit >= 32); if (fbit < VIRTIO_TRANSPORT_F_START) virtio_check_driver_offered_feature(vdev, fbit); -- cgit v1.2.3 From 8c6a98b22b750c9eb52653ba643faa17db8d3881 Mon Sep 17 00:00:00 2001 From: Andy Whitcroft Date: Mon, 24 Jan 2011 09:31:38 -0800 Subject: Input: sysrq - ensure sysrq_enabled and __sysrq_enabled are consistent Currently sysrq_enabled and __sysrq_enabled are initialised separately and inconsistently, leading to sysrq being actually enabled by reported as not enabled in sysfs. The first change to the sysfs configurable synchronises these two: static int __read_mostly sysrq_enabled = 1; static int __sysrq_enabled; Add a common define to carry the default for these preventing them becoming out of sync again. Default this to 1 to mirror previous behaviour. Signed-off-by: Andy Whitcroft Cc: stable@kernel.org Signed-off-by: Dmitry Torokhov --- include/linux/sysrq.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/sysrq.h b/include/linux/sysrq.h index 387fa7d05c98..7faf933cced7 100644 --- a/include/linux/sysrq.h +++ b/include/linux/sysrq.h @@ -17,6 +17,9 @@ #include #include +/* Enable/disable SYSRQ support by default (0==no, 1==yes). */ +#define SYSRQ_DEFAULT_ENABLE 1 + /* Possible values of bitmask for enabling sysrq functions */ /* 0x0001 is reserved for enable everything */ #define SYSRQ_ENABLE_LOG 0x0002 -- cgit v1.2.3 From c39649c331c70952700f99832b03f87e9d7f5b4b Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Wed, 19 Jan 2011 11:03:25 +0000 Subject: lib: cpu_rmap: CPU affinity reverse-mapping When initiating I/O on a multiqueue and multi-IRQ device, we may want to select a queue for which the response will be handled on the same or a nearby CPU. This requires a reverse-map of IRQ affinity. Add library functions to support a generic reverse-mapping from CPUs to objects with affinity and the specific case where the objects are IRQs. Signed-off-by: Ben Hutchings Signed-off-by: David S. Miller --- include/linux/cpu_rmap.h | 73 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 73 insertions(+) create mode 100644 include/linux/cpu_rmap.h (limited to 'include/linux') diff --git a/include/linux/cpu_rmap.h b/include/linux/cpu_rmap.h new file mode 100644 index 000000000000..473771a528c0 --- /dev/null +++ b/include/linux/cpu_rmap.h @@ -0,0 +1,73 @@ +/* + * cpu_rmap.c: CPU affinity reverse-map support + * Copyright 2011 Solarflare Communications Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation, incorporated herein by reference. + */ + +#include +#include +#include + +/** + * struct cpu_rmap - CPU affinity reverse-map + * @size: Number of objects to be reverse-mapped + * @used: Number of objects added + * @obj: Pointer to array of object pointers + * @near: For each CPU, the index and distance to the nearest object, + * based on affinity masks + */ +struct cpu_rmap { + u16 size, used; + void **obj; + struct { + u16 index; + u16 dist; + } near[0]; +}; +#define CPU_RMAP_DIST_INF 0xffff + +extern struct cpu_rmap *alloc_cpu_rmap(unsigned int size, gfp_t flags); + +/** + * free_cpu_rmap - free CPU affinity reverse-map + * @rmap: Reverse-map allocated with alloc_cpu_rmap(), or %NULL + */ +static inline void free_cpu_rmap(struct cpu_rmap *rmap) +{ + kfree(rmap); +} + +extern int cpu_rmap_add(struct cpu_rmap *rmap, void *obj); +extern int cpu_rmap_update(struct cpu_rmap *rmap, u16 index, + const struct cpumask *affinity); + +static inline u16 cpu_rmap_lookup_index(struct cpu_rmap *rmap, unsigned int cpu) +{ + return rmap->near[cpu].index; +} + +static inline void *cpu_rmap_lookup_obj(struct cpu_rmap *rmap, unsigned int cpu) +{ + return rmap->obj[rmap->near[cpu].index]; +} + +#ifdef CONFIG_GENERIC_HARDIRQS + +/** + * alloc_irq_cpu_rmap - allocate CPU affinity reverse-map for IRQs + * @size: Number of objects to be mapped + * + * Must be called in process context. + */ +static inline struct cpu_rmap *alloc_irq_cpu_rmap(unsigned int size) +{ + return alloc_cpu_rmap(size, GFP_KERNEL); +} +extern void free_irq_cpu_rmap(struct cpu_rmap *rmap); + +extern int irq_cpu_rmap_add(struct cpu_rmap *rmap, int irq); + +#endif -- cgit v1.2.3 From c445477d74ab3779d1386ab797fbb9b628eb9f64 Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Wed, 19 Jan 2011 11:03:53 +0000 Subject: net: RPS: Enable hardware acceleration of RFS Allow drivers for multiqueue hardware with flow filter tables to accelerate RFS. The driver must: 1. Set net_device::rx_cpu_rmap to a cpu_rmap of the RX completion IRQs (in queue order). This will provide a mapping from CPUs to the queues for which completions are handled nearest to them. 2. Implement net_device_ops::ndo_rx_flow_steer. This operation adds or replaces a filter steering the given flow to the given RX queue, if possible. 3. Periodically remove filters for which rps_may_expire_flow() returns true. Signed-off-by: Ben Hutchings Signed-off-by: David S. Miller --- include/linux/netdevice.h | 33 ++++++++++++++++++++++++++++++--- 1 file changed, 30 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 371fa8839d51..a335f2022690 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -554,14 +554,16 @@ struct rps_map { #define RPS_MAP_SIZE(_num) (sizeof(struct rps_map) + (_num * sizeof(u16))) /* - * The rps_dev_flow structure contains the mapping of a flow to a CPU and the - * tail pointer for that CPU's input queue at the time of last enqueue. + * The rps_dev_flow structure contains the mapping of a flow to a CPU, the + * tail pointer for that CPU's input queue at the time of last enqueue, and + * a hardware filter index. */ struct rps_dev_flow { u16 cpu; - u16 fill; + u16 filter; unsigned int last_qtail; }; +#define RPS_NO_FILTER 0xffff /* * The rps_dev_flow_table structure contains a table of flow mappings. @@ -611,6 +613,11 @@ static inline void rps_reset_sock_flow(struct rps_sock_flow_table *table, extern struct rps_sock_flow_table __rcu *rps_sock_flow_table; +#ifdef CONFIG_RFS_ACCEL +extern bool rps_may_expire_flow(struct net_device *dev, u16 rxq_index, + u32 flow_id, u16 filter_id); +#endif + /* This structure contains an instance of an RX queue. */ struct netdev_rx_queue { struct rps_map __rcu *rps_map; @@ -769,6 +776,13 @@ struct netdev_tc_txq { * is always called from the stack with the rtnl lock held and netif tx * queues stopped. This allows the netdevice to perform queue management * safely. + * + * RFS acceleration. + * int (*ndo_rx_flow_steer)(struct net_device *dev, const struct sk_buff *skb, + * u16 rxq_index, u32 flow_id); + * Set hardware filter for RFS. rxq_index is the target queue index; + * flow_id is a flow ID to be passed to rps_may_expire_flow() later. + * Return the filter ID on success, or a negative error code. */ #define HAVE_NET_DEVICE_OPS struct net_device_ops { @@ -842,6 +856,12 @@ struct net_device_ops { int (*ndo_fcoe_get_wwn)(struct net_device *dev, u64 *wwn, int type); #endif +#ifdef CONFIG_RFS_ACCEL + int (*ndo_rx_flow_steer)(struct net_device *dev, + const struct sk_buff *skb, + u16 rxq_index, + u32 flow_id); +#endif }; /* @@ -1056,6 +1076,13 @@ struct net_device { /* Number of RX queues currently active in device */ unsigned int real_num_rx_queues; + +#ifdef CONFIG_RFS_ACCEL + /* CPU reverse-mapping for RX completion interrupts, indexed + * by RX queue number. Assigned by driver. This must only be + * set if the ndo_rx_flow_steer operation is defined. */ + struct cpu_rmap *rx_cpu_rmap; +#endif #endif rx_handler_func_t __rcu *rx_handler; -- cgit v1.2.3 From 04ed3e741d0f133e02bed7fa5c98edba128f90e7 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Micha=C5=82=20Miros=C5=82aw?= Date: Mon, 24 Jan 2011 15:32:47 -0800 Subject: net: change netdev->features to u32 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Quoting Ben Hutchings: we presumably won't be defining features that can only be enabled on 64-bit architectures. Occurences found by `grep -r` on net/, drivers/net, include/ [ Move features and vlan_features next to each other in struct netdev, as per Eric Dumazet's suggestion -DaveM ] Signed-off-by: Michał Mirosław Signed-off-by: David S. Miller --- include/linux/netdevice.h | 24 ++++++++++++------------ include/linux/skbuff.h | 2 +- 2 files changed, 13 insertions(+), 13 deletions(-) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index a335f2022690..0de3c59720fa 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -914,7 +914,11 @@ struct net_device { struct list_head unreg_list; /* Net device features */ - unsigned long features; + u32 features; + + /* VLAN feature mask */ + u32 vlan_features; + #define NETIF_F_SG 1 /* Scatter/gather IO. */ #define NETIF_F_IP_CSUM 2 /* Can checksum TCP/UDP over IPv4. */ #define NETIF_F_NO_CSUM 4 /* Does not require checksum. F.e. loopack. */ @@ -1176,9 +1180,6 @@ struct net_device { /* rtnetlink link ops */ const struct rtnl_link_ops *rtnl_link_ops; - /* VLAN feature mask */ - unsigned long vlan_features; - /* for setting kernel sock attribute on TCP connection setup */ #define GSO_MAX_SIZE 65536 unsigned int gso_max_size; @@ -1401,7 +1402,7 @@ struct packet_type { struct packet_type *, struct net_device *); struct sk_buff *(*gso_segment)(struct sk_buff *skb, - int features); + u32 features); int (*gso_send_check)(struct sk_buff *skb); struct sk_buff **(*gro_receive)(struct sk_buff **head, struct sk_buff *skb); @@ -2370,7 +2371,7 @@ extern int netdev_tstamp_prequeue; extern int weight_p; extern int netdev_set_master(struct net_device *dev, struct net_device *master); extern int skb_checksum_help(struct sk_buff *skb); -extern struct sk_buff *skb_gso_segment(struct sk_buff *skb, int features); +extern struct sk_buff *skb_gso_segment(struct sk_buff *skb, u32 features); #ifdef CONFIG_BUG extern void netdev_rx_csum_fault(struct net_device *dev); #else @@ -2397,22 +2398,21 @@ extern char *netdev_drivername(const struct net_device *dev, char *buffer, int l extern void linkwatch_run_queue(void); -unsigned long netdev_increment_features(unsigned long all, unsigned long one, - unsigned long mask); -unsigned long netdev_fix_features(unsigned long features, const char *name); +u32 netdev_increment_features(u32 all, u32 one, u32 mask); +u32 netdev_fix_features(u32 features, const char *name); void netif_stacked_transfer_operstate(const struct net_device *rootdev, struct net_device *dev); -int netif_skb_features(struct sk_buff *skb); +u32 netif_skb_features(struct sk_buff *skb); -static inline int net_gso_ok(int features, int gso_type) +static inline int net_gso_ok(u32 features, int gso_type) { int feature = gso_type << NETIF_F_GSO_SHIFT; return (features & feature) == feature; } -static inline int skb_gso_ok(struct sk_buff *skb, int features) +static inline int skb_gso_ok(struct sk_buff *skb, u32 features) { return net_gso_ok(features, skb_shinfo(skb)->gso_type) && (!skb_has_frag_list(skb) || (features & NETIF_F_FRAGLIST)); diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 6e946da9d1d6..31f02d0b46a7 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -1877,7 +1877,7 @@ extern void skb_split(struct sk_buff *skb, extern int skb_shift(struct sk_buff *tgt, struct sk_buff *skb, int shiftlen); -extern struct sk_buff *skb_segment(struct sk_buff *skb, int features); +extern struct sk_buff *skb_segment(struct sk_buff *skb, u32 features); static inline void *skb_header_pointer(const struct sk_buff *skb, int offset, int len, void *buffer) -- cgit v1.2.3 From acd1130e8793fb150fb522da8ec51675839eb4b1 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Micha=C5=82=20Miros=C5=82aw?= Date: Mon, 24 Jan 2011 15:45:15 -0800 Subject: net: reduce and unify printk level in netdev_fix_features() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Reduce printk() levels to KERN_INFO in netdev_fix_features() as this will be used by ethtool and might spam dmesg unnecessarily. This converts the function to use netdev_info() instead of plain printk(). As a side effect, bonding and bridge devices will now log dropped features on every slave device change. Signed-off-by: Michał Mirosław Signed-off-by: David S. Miller --- include/linux/netdevice.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 0de3c59720fa..8858422c5c5d 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -2399,7 +2399,7 @@ extern char *netdev_drivername(const struct net_device *dev, char *buffer, int l extern void linkwatch_run_queue(void); u32 netdev_increment_features(u32 all, u32 one, u32 mask); -u32 netdev_fix_features(u32 features, const char *name); +u32 netdev_fix_features(struct net_device *dev, u32 features); void netif_stacked_transfer_operstate(const struct net_device *rootdev, struct net_device *dev); -- cgit v1.2.3 From 414b4ff5eecff0097d09c4a7da12e435fd503692 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 25 Jan 2011 12:43:49 +0100 Subject: block: add REQ_FLUSH_SEQ rq == &q->flush_rq was used to determine whether a rq is part of a flush sequence, which worked because all requests in a flush sequence were sequenced using the single dedicated request. This is about to change, so introduce REQ_FLUSH_SEQ flag to distinguish flush sequence requests. This patch doesn't cause any behavior change. Signed-off-by: Tejun Heo Signed-off-by: Jens Axboe --- include/linux/blk_types.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h index 46ad5197537a..dddedfc0af81 100644 --- a/include/linux/blk_types.h +++ b/include/linux/blk_types.h @@ -148,6 +148,7 @@ enum rq_flag_bits { __REQ_ALLOCED, /* request came from our alloc pool */ __REQ_COPY_USER, /* contains copies of user pages */ __REQ_FLUSH, /* request for cache flush */ + __REQ_FLUSH_SEQ, /* request for flush sequence */ __REQ_IO_STAT, /* account I/O stat */ __REQ_MIXED_MERGE, /* merge of different types, fail separately */ __REQ_SECURE, /* secure discard (used with __REQ_DISCARD) */ @@ -188,6 +189,7 @@ enum rq_flag_bits { #define REQ_ALLOCED (1 << __REQ_ALLOCED) #define REQ_COPY_USER (1 << __REQ_COPY_USER) #define REQ_FLUSH (1 << __REQ_FLUSH) +#define REQ_FLUSH_SEQ (1 << __REQ_FLUSH_SEQ) #define REQ_IO_STAT (1 << __REQ_IO_STAT) #define REQ_MIXED_MERGE (1 << __REQ_MIXED_MERGE) #define REQ_SECURE (1 << __REQ_SECURE) -- cgit v1.2.3 From ae1b1539622fb46e51b4d13b3f9e5f4c713f86ae Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 25 Jan 2011 12:43:54 +0100 Subject: block: reimplement FLUSH/FUA to support merge The current FLUSH/FUA support has evolved from the implementation which had to perform queue draining. As such, sequencing is done queue-wide one flush request after another. However, with the draining requirement gone, there's no reason to keep the queue-wide sequential approach. This patch reimplements FLUSH/FUA support such that each FLUSH/FUA request is sequenced individually. The actual FLUSH execution is double buffered and whenever a request wants to execute one for either PRE or POSTFLUSH, it queues on the pending queue. Once certain conditions are met, a flush request is issued and on its completion all pending requests proceed to the next sequence. This allows arbitrary merging of different type of flushes. How they are merged can be primarily controlled and tuned by adjusting the above said 'conditions' used to determine when to issue the next flush. This is inspired by Darrick's patches to merge multiple zero-data flushes which helps workloads with highly concurrent fsync requests. * As flush requests are never put on the IO scheduler, request fields used for flush share space with rq->rb_node. rq->completion_data is moved out of the union. This increases the request size by one pointer. As rq->elevator_private* are used only by the iosched too, it is possible to reduce the request size further. However, to do that, we need to modify request allocation path such that iosched data is not allocated for flush requests. * FLUSH/FUA processing happens on insertion now instead of dispatch. - Comments updated as per Vivek and Mike. Signed-off-by: Tejun Heo Cc: "Darrick J. Wong" Cc: Shaohua Li Cc: Christoph Hellwig Cc: Vivek Goyal Cc: Mike Snitzer Signed-off-by: Jens Axboe --- include/linux/blkdev.h | 18 ++++++++++++------ include/linux/elevator.h | 1 + 2 files changed, 13 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 36ab42c9bb99..6d7e9afd08c3 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -99,13 +99,18 @@ struct request { /* * The rb_node is only used inside the io scheduler, requests * are pruned when moved to the dispatch queue. So let the - * completion_data share space with the rb_node. + * flush fields share space with the rb_node. */ union { struct rb_node rb_node; /* sort/lookup */ - void *completion_data; + struct { + unsigned int seq; + struct list_head list; + } flush; }; + void *completion_data; + /* * Three pointers are available for the IO schedulers, if they need * more they have to dynamically allocate it. @@ -362,11 +367,12 @@ struct request_queue * for flush operations */ unsigned int flush_flags; - unsigned int flush_seq; - int flush_err; + unsigned int flush_pending_idx:1; + unsigned int flush_running_idx:1; + unsigned long flush_pending_since; + struct list_head flush_queue[2]; + struct list_head flush_data_in_flight; struct request flush_rq; - struct request *orig_flush_rq; - struct list_head pending_flushes; struct mutex sysfs_lock; diff --git a/include/linux/elevator.h b/include/linux/elevator.h index 4fd978e7eb83..86120c916fcc 100644 --- a/include/linux/elevator.h +++ b/include/linux/elevator.h @@ -167,6 +167,7 @@ extern struct request *elv_rb_find(struct rb_root *, sector_t); #define ELEVATOR_INSERT_BACK 2 #define ELEVATOR_INSERT_SORT 3 #define ELEVATOR_INSERT_REQUEUE 4 +#define ELEVATOR_INSERT_FLUSH 5 /* * return values from elevator_may_queue_fn -- cgit v1.2.3 From 731f3f482ad3b2c58a1af2d0a9a634a82803706a Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Fri, 21 Jan 2011 03:05:28 +0000 Subject: NFS: nfsacl_{encode,decode} should return signed integer Clean up. The nfsacl_encode() and nfsacl_decode() functions return negative errno values, and each call site verifies that the returned value is not negative. Change the synopsis of both of these functions to reflect this usage. Document the synopsis and return values. Reported-by: Trond Myklebust Signed-off-by: Chuck Lever Signed-off-by: Trond Myklebust --- include/linux/nfsacl.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/nfsacl.h b/include/linux/nfsacl.h index f321b578edeb..fabcb1e5c460 100644 --- a/include/linux/nfsacl.h +++ b/include/linux/nfsacl.h @@ -51,10 +51,10 @@ nfsacl_size(struct posix_acl *acl_access, struct posix_acl *acl_default) return w; } -extern unsigned int +extern int nfsacl_encode(struct xdr_buf *buf, unsigned int base, struct inode *inode, struct posix_acl *acl, int encode_entries, int typeflag); -extern unsigned int +extern int nfsacl_decode(struct xdr_buf *buf, unsigned int base, unsigned int *aclcnt, struct posix_acl **pacl); -- cgit v1.2.3 From f61f6da0d53842e849bab7f69e1431bd3de1136d Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Fri, 21 Jan 2011 03:05:38 +0000 Subject: NFS: Prevent memory allocation failure in nfsacl_encode() nfsacl_encode() allocates memory in certain cases. This of course is not guaranteed to work. Since commit 9f06c719 "SUNRPC: New xdr_streams XDR encoder API", the kernel's XDR encoders can't return a result indicating possibly a failure, so a memory allocation failure in nfsacl_encode() has become fatal (ie, the XDR code Oopses) in some cases. However, the allocated memory is a tiny fixed amount, on the order of 40-50 bytes. We can easily use a stack-allocated buffer for this, with only a wee bit of nose-holding. Signed-off-by: Chuck Lever Signed-off-by: Trond Myklebust --- include/linux/posix_acl.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/posix_acl.h b/include/linux/posix_acl.h index d68283a898bb..54211c1cd926 100644 --- a/include/linux/posix_acl.h +++ b/include/linux/posix_acl.h @@ -71,6 +71,7 @@ posix_acl_release(struct posix_acl *acl) /* posix_acl.c */ +extern void posix_acl_init(struct posix_acl *, int); extern struct posix_acl *posix_acl_alloc(int, gfp_t); extern struct posix_acl *posix_acl_clone(const struct posix_acl *, gfp_t); extern int posix_acl_valid(const struct posix_acl *); -- cgit v1.2.3 From 778be232a207e79088ba70d832ac25dfea6fbf1a Mon Sep 17 00:00:00 2001 From: Andy Adamson Date: Tue, 25 Jan 2011 15:38:01 +0000 Subject: NFS do not find client in NFSv4 pg_authenticate The information required to find the nfs_client cooresponding to the incoming back channel request is contained in the NFS layer. Perform minimal checking in the RPC layer pg_authenticate method, and push more detailed checking into the NFS layer where the nfs_client can be found. Signed-off-by: Andy Adamson Signed-off-by: Trond Myklebust --- include/linux/sunrpc/bc_xprt.h | 13 ------------- include/linux/sunrpc/svc_xprt.h | 1 - 2 files changed, 14 deletions(-) (limited to 'include/linux') diff --git a/include/linux/sunrpc/bc_xprt.h b/include/linux/sunrpc/bc_xprt.h index c50b458b8a3f..082884295f80 100644 --- a/include/linux/sunrpc/bc_xprt.h +++ b/include/linux/sunrpc/bc_xprt.h @@ -47,14 +47,6 @@ static inline int svc_is_backchannel(const struct svc_rqst *rqstp) return 1; return 0; } -static inline struct nfs4_sessionid *bc_xprt_sid(struct svc_rqst *rqstp) -{ - if (svc_is_backchannel(rqstp)) - return (struct nfs4_sessionid *) - rqstp->rq_server->sv_bc_xprt->xpt_bc_sid; - return NULL; -} - #else /* CONFIG_NFS_V4_1 */ static inline int xprt_setup_backchannel(struct rpc_xprt *xprt, unsigned int min_reqs) @@ -67,11 +59,6 @@ static inline int svc_is_backchannel(const struct svc_rqst *rqstp) return 0; } -static inline struct nfs4_sessionid *bc_xprt_sid(struct svc_rqst *rqstp) -{ - return NULL; -} - static inline void xprt_free_bc_request(struct rpc_rqst *req) { } diff --git a/include/linux/sunrpc/svc_xprt.h b/include/linux/sunrpc/svc_xprt.h index 059877b4d85b..7ad9751a0d87 100644 --- a/include/linux/sunrpc/svc_xprt.h +++ b/include/linux/sunrpc/svc_xprt.h @@ -77,7 +77,6 @@ struct svc_xprt { size_t xpt_remotelen; /* length of address */ struct rpc_wait_queue xpt_bc_pending; /* backchannel wait queue */ struct list_head xpt_users; /* callbacks on free */ - void *xpt_bc_sid; /* back channel session ID */ struct net *xpt_net; struct rpc_xprt *xpt_bc_xprt; /* NFSv4.1 backchannel */ -- cgit v1.2.3 From ac751efa6a0d70f2c9daef5c7e3a92270f5c2dff Mon Sep 17 00:00:00 2001 From: Torben Hohn Date: Tue, 25 Jan 2011 15:07:35 -0800 Subject: console: rename acquire/release_console_sem() to console_lock/unlock() The -rt patches change the console_semaphore to console_mutex. As a result, a quite large chunk of the patches changes all acquire/release_console_sem() to acquire/release_console_mutex() This commit makes things use more neutral function names which dont make implications about the underlying lock. The only real change is the return value of console_trylock which is inverted from try_acquire_console_sem() This patch also paves the way to switching console_sem from a semaphore to a mutex. [akpm@linux-foundation.org: coding-style fixes] [akpm@linux-foundation.org: make console_trylock return 1 on success, per Geert] Signed-off-by: Torben Hohn Cc: Thomas Gleixner Cc: Greg KH Cc: Ingo Molnar Cc: Geert Uytterhoeven Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/console.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/console.h b/include/linux/console.h index 9774fe6a1a97..7453cfd593c8 100644 --- a/include/linux/console.h +++ b/include/linux/console.h @@ -139,9 +139,9 @@ extern int update_console_cmdline(char *name, int idx, char *name_new, int idx_n extern void register_console(struct console *); extern int unregister_console(struct console *); extern struct console *console_drivers; -extern void acquire_console_sem(void); -extern int try_acquire_console_sem(void); -extern void release_console_sem(void); +extern void console_lock(void); +extern int console_trylock(void); +extern void console_unlock(void); extern void console_conditional_schedule(void); extern void console_unblank(void); extern struct tty_driver *console_device(int *); -- cgit v1.2.3 From 41b2610c3443e6c4760e61fc10eef73f96f9f6a5 Mon Sep 17 00:00:00 2001 From: Hans Rosenfeld Date: Mon, 24 Jan 2011 16:05:42 +0100 Subject: x86, amd: Extend AMD northbridge caching code to support "Link Control" devices "Link Control" devices (NB function 4) will be used by L3 cache partitioning on family 0x15. Signed-off-by: Hans Rosenfeld Cc: LKML-Reference: <1295881543-572552-4-git-send-email-hans.rosenfeld@amd.com> Signed-off-by: Ingo Molnar --- include/linux/pci_ids.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h index 3adb06ebf841..580de67f318b 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -518,6 +518,7 @@ #define PCI_DEVICE_ID_AMD_11H_NB_MISC 0x1303 #define PCI_DEVICE_ID_AMD_11H_NB_LINK 0x1304 #define PCI_DEVICE_ID_AMD_15H_NB_MISC 0x1603 +#define PCI_DEVICE_ID_AMD_15H_NB_LINK 0x1604 #define PCI_DEVICE_ID_AMD_CNB17H_F3 0x1703 #define PCI_DEVICE_ID_AMD_LANCE 0x2000 #define PCI_DEVICE_ID_AMD_LANCE_HOME 0x2001 -- cgit v1.2.3 From 4dd53d891ca46dcc1fde0376a33540d3fd83cb9a Mon Sep 17 00:00:00 2001 From: Venkatesh Pallipadi Date: Tue, 21 Dec 2010 17:09:00 -0800 Subject: softirqs: Free up pf flag PF_KSOFTIRQD Cleanup patch, freeing up PF_KSOFTIRQD and use per_cpu ksoftirqd pointer instead, as suggested by Eric Dumazet. Tested-by: Shaun Ruffell Signed-off-by: Venkatesh Pallipadi Signed-off-by: Peter Zijlstra LKML-Reference: <1292980144-28796-2-git-send-email-venki@google.com> Signed-off-by: Ingo Molnar --- include/linux/interrupt.h | 7 +++++++ include/linux/sched.h | 1 - 2 files changed, 7 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h index 55e0d4253e49..a1382b9b5813 100644 --- a/include/linux/interrupt.h +++ b/include/linux/interrupt.h @@ -426,6 +426,13 @@ extern void raise_softirq(unsigned int nr); */ DECLARE_PER_CPU(struct list_head [NR_SOFTIRQS], softirq_work_list); +DECLARE_PER_CPU(struct task_struct *, ksoftirqd); + +static inline struct task_struct *this_cpu_ksoftirqd(void) +{ + return this_cpu_read(ksoftirqd); +} + /* Try to send a softirq to a remote cpu. If this cannot be done, the * work will be queued to the local cpu. */ diff --git a/include/linux/sched.h b/include/linux/sched.h index d747f948b34e..af6e15fbfb78 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1715,7 +1715,6 @@ extern void thread_group_times(struct task_struct *p, cputime_t *ut, cputime_t * /* * Per process flags */ -#define PF_KSOFTIRQD 0x00000001 /* I am ksoftirqd */ #define PF_STARTING 0x00000002 /* being created */ #define PF_EXITING 0x00000004 /* getting shut down */ #define PF_EXITPIDONE 0x00000008 /* pi exit done on shut down */ -- cgit v1.2.3 From a1dabb6bfffccb897eff3e1d102dacf2a4bedf3b Mon Sep 17 00:00:00 2001 From: Venkatesh Pallipadi Date: Tue, 21 Dec 2010 17:09:01 -0800 Subject: time: Add nsecs_to_cputime64 interface for asm-generic Add nsecs_to_cputime64 interface. This is used in following patches that updates cpu irq stat based on ns granularity info in IRQ_TIME_ACCOUNTING. Tested-by: Shaun Ruffell Signed-off-by: Venkatesh Pallipadi Signed-off-by: Peter Zijlstra LKML-Reference: <1292980144-28796-3-git-send-email-venki@google.com> Signed-off-by: Ingo Molnar --- include/linux/jiffies.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/jiffies.h b/include/linux/jiffies.h index 6811f4bfc6e7..922aa313c9f9 100644 --- a/include/linux/jiffies.h +++ b/include/linux/jiffies.h @@ -307,6 +307,7 @@ extern clock_t jiffies_to_clock_t(long x); extern unsigned long clock_t_to_jiffies(unsigned long x); extern u64 jiffies_64_to_clock_t(u64 x); extern u64 nsec_to_clock_t(u64 x); +extern u64 nsecs_to_jiffies64(u64 n); extern unsigned long nsecs_to_jiffies(u64 n); #define TIMESTAMP_SIZE 30 -- cgit v1.2.3 From da7a735e51f9622eb3e1672594d4a41da01d7e4f Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Mon, 17 Jan 2011 17:03:27 +0100 Subject: sched: Fix switch_from_fair() When a task is taken out of the fair class we must ensure the vruntime is properly normalized because when we put it back in it will assume to be normalized. The case that goes wrong is when changing away from the fair class while sleeping. Sleeping tasks have non-normalized vruntime in order to make sleeper-fairness work. So treat the switch away from fair as a wakeup and preserve the relative vruntime. Also update sysrq-n to call the ->switch_{to,from} methods. Reported-by: Onkalo Samu Signed-off-by: Peter Zijlstra LKML-Reference: Signed-off-by: Ingo Molnar --- include/linux/sched.h | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index af6e15fbfb78..0542774914d4 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1084,12 +1084,10 @@ struct sched_class { void (*task_tick) (struct rq *rq, struct task_struct *p, int queued); void (*task_fork) (struct task_struct *p); - void (*switched_from) (struct rq *this_rq, struct task_struct *task, - int running); - void (*switched_to) (struct rq *this_rq, struct task_struct *task, - int running); + void (*switched_from) (struct rq *this_rq, struct task_struct *task); + void (*switched_to) (struct rq *this_rq, struct task_struct *task); void (*prio_changed) (struct rq *this_rq, struct task_struct *task, - int oldprio, int running); + int oldprio); unsigned int (*get_rr_interval) (struct rq *rq, struct task_struct *task); -- cgit v1.2.3 From 1ea1bdf7faa4d0b5293e605f2e1ef1c2c59f6b53 Mon Sep 17 00:00:00 2001 From: Ari Kauppi Date: Thu, 20 Jan 2011 13:57:18 -0500 Subject: oprofile: Fix usage of CONFIG_HW_PERF_EVENTS for oprofile_perf_init and friends The implementations are flagged in Makefile with CONFIG_HW_PERF_EVENTS instead of CONFIG_PERF_EVENTS. Cc: stable@kernel.org # 37.x Signed-off-by: Ari Kauppi Signed-off-by: Robert Richter --- include/linux/oprofile.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/oprofile.h b/include/linux/oprofile.h index 32fb81212fd1..54c83827f913 100644 --- a/include/linux/oprofile.h +++ b/include/linux/oprofile.h @@ -186,10 +186,10 @@ int oprofile_add_data(struct op_entry *entry, unsigned long val); int oprofile_add_data64(struct op_entry *entry, u64 val); int oprofile_write_commit(struct op_entry *entry); -#ifdef CONFIG_PERF_EVENTS +#ifdef CONFIG_HW_PERF_EVENTS int __init oprofile_perf_init(struct oprofile_operations *ops); void oprofile_perf_exit(void); char *op_name_from_perf_id(void); -#endif /* CONFIG_PERF_EVENTS */ +#endif /* CONFIG_HW_PERF_EVENTS */ #endif /* OPROFILE_H */ -- cgit v1.2.3 From d14dd7e20d5e526557f5d3cfef4046a642f80924 Mon Sep 17 00:00:00 2001 From: Ari Kauppi Date: Thu, 20 Jan 2011 13:57:19 -0500 Subject: ARM: oprofile: Fix backtraces in timer mode Always allow backtraces when using oprofile on ARM, even if a PMU isn't present. Restores functionality originally introduced in commit 1b7b56982fdcd9d85effd76f3928cf5d6eb26155 ("oprofile: Always allow backtraces on ARM") by Richard Purdie. It is not that obvious, but there is now only one oprofile_arch_init() function. So the .backtrace callback is available also in timer mode. Implemented by removing code and using stubs for oprofile_perf_{init, exit} provided by . This allows cleaning of other architecture specific implementations too. Cc: stable@kernel.org # 37.x Signed-off-by: Ari Kauppi Acked-by: Will Deacon Signed-off-by: Robert Richter --- include/linux/oprofile.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include/linux') diff --git a/include/linux/oprofile.h b/include/linux/oprofile.h index 54c83827f913..1ca64113efe8 100644 --- a/include/linux/oprofile.h +++ b/include/linux/oprofile.h @@ -16,6 +16,8 @@ #include #include #include +#include +#include #include /* Each escaped entry is prefixed by ESCAPE_CODE @@ -190,6 +192,13 @@ int oprofile_write_commit(struct op_entry *entry); int __init oprofile_perf_init(struct oprofile_operations *ops); void oprofile_perf_exit(void); char *op_name_from_perf_id(void); +#else +static inline int __init oprofile_perf_init(struct oprofile_operations *ops) +{ + pr_info("oprofile: hardware counters not available\n"); + return -ENODEV; +} +static inline void oprofile_perf_exit(void) { } #endif /* CONFIG_HW_PERF_EVENTS */ #endif /* OPROFILE_H */ -- cgit v1.2.3 From 92578c0b8078f6919f9b47e7e16a1cf770bd127b Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Sun, 23 Jan 2011 15:24:55 +0100 Subject: kthread: Replace deprecated spinlock initialization SPIN_LOCK_UNLOCK is deprecated. Use the lockdep capable variant instead. Signed-off-by: Thomas Gleixner --- include/linux/kthread.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/kthread.h b/include/linux/kthread.h index ce0775aa64c3..7ff16f7d3ed4 100644 --- a/include/linux/kthread.h +++ b/include/linux/kthread.h @@ -64,7 +64,7 @@ struct kthread_work { }; #define KTHREAD_WORKER_INIT(worker) { \ - .lock = SPIN_LOCK_UNLOCKED, \ + .lock = __SPIN_LOCK_UNLOCKED((worker).lock), \ .work_list = LIST_HEAD_INIT((worker).work_list), \ } -- cgit v1.2.3 From d04fa5a3ba06c3b7a1c4a6860d0fa4825507a755 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Sun, 23 Jan 2011 15:30:09 +0100 Subject: locking: Remove deprecated lock initializers Last users are gone. Remove the left overs. Signed-off-by: Thomas Gleixner --- include/linux/rwlock_types.h | 8 -------- include/linux/spinlock_types.h | 8 -------- 2 files changed, 16 deletions(-) (limited to 'include/linux') diff --git a/include/linux/rwlock_types.h b/include/linux/rwlock_types.h index bd31808c7d8e..cc0072e93e36 100644 --- a/include/linux/rwlock_types.h +++ b/include/linux/rwlock_types.h @@ -43,14 +43,6 @@ typedef struct { RW_DEP_MAP_INIT(lockname) } #endif -/* - * RW_LOCK_UNLOCKED defeat lockdep state tracking and is hence - * deprecated. - * - * Please use DEFINE_RWLOCK() or __RW_LOCK_UNLOCKED() as appropriate. - */ -#define RW_LOCK_UNLOCKED __RW_LOCK_UNLOCKED(old_style_rw_init) - #define DEFINE_RWLOCK(x) rwlock_t x = __RW_LOCK_UNLOCKED(x) #endif /* __LINUX_RWLOCK_TYPES_H */ diff --git a/include/linux/spinlock_types.h b/include/linux/spinlock_types.h index 851b7783720d..73548eb13a5d 100644 --- a/include/linux/spinlock_types.h +++ b/include/linux/spinlock_types.h @@ -81,14 +81,6 @@ typedef struct spinlock { #define __SPIN_LOCK_UNLOCKED(lockname) \ (spinlock_t ) __SPIN_LOCK_INITIALIZER(lockname) -/* - * SPIN_LOCK_UNLOCKED defeats lockdep state tracking and is hence - * deprecated. - * Please use DEFINE_SPINLOCK() or __SPIN_LOCK_UNLOCKED() as - * appropriate. - */ -#define SPIN_LOCK_UNLOCKED __SPIN_LOCK_UNLOCKED(old_style_spin_init) - #define DEFINE_SPINLOCK(x) spinlock_t x = __SPIN_LOCK_UNLOCKED(x) #include -- cgit v1.2.3 From c16a87ce063f79e0ec7d25ce2950e1bc6db03c72 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Wed, 26 Jan 2011 20:05:50 +0000 Subject: rwsem: Cleanup includes All rwsem implementations include the same headers. Include them from include/linux/rwsem.h Signed-off-by: Thomas Gleixner Cc: Peter Zijlstra Cc: David Howells Cc: Benjamin Herrenschmidt Cc: Matt Turner Acked-by: Tony Luck Acked-by: Heiko Carstens Cc: Paul Mundt Acked-by: David Miller Cc: Chris Zankel LKML-Reference: <20110126195833.483520950@linutronix.de> --- include/linux/rwsem-spinlock.h | 8 -------- include/linux/rwsem.h | 3 +++ 2 files changed, 3 insertions(+), 8 deletions(-) (limited to 'include/linux') diff --git a/include/linux/rwsem-spinlock.h b/include/linux/rwsem-spinlock.h index bdfcc2527970..8c0dc7fc07a4 100644 --- a/include/linux/rwsem-spinlock.h +++ b/include/linux/rwsem-spinlock.h @@ -12,15 +12,7 @@ #error "please don't include linux/rwsem-spinlock.h directly, use linux/rwsem.h instead" #endif -#include -#include - #ifdef __KERNEL__ - -#include - -struct rwsem_waiter; - /* * the rw-semaphore definition * - if activity is 0 then there are no active readers or writers diff --git a/include/linux/rwsem.h b/include/linux/rwsem.h index efd348fe8ca7..496296d12d62 100644 --- a/include/linux/rwsem.h +++ b/include/linux/rwsem.h @@ -11,6 +11,9 @@ #include #include +#include +#include + #include #include -- cgit v1.2.3 From 1c8ed640d918290ddc1de5ada02ef6686a733c9f Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Wed, 26 Jan 2011 20:05:56 +0000 Subject: rwsem: Move duplicate struct rwsem declaration to linux/rwsem.h The difference between these declarations is the data type of the count member and the lack of lockdep in some architectures/ long is equivivalent to signed long and the #ifdef guarded dep_map member does not hurt anyone. Signed-off-by: Thomas Gleixner Cc: Peter Zijlstra Cc: David Howells Cc: Benjamin Herrenschmidt Cc: Matt Turner Acked-by: Tony Luck Acked-by: Heiko Carstens Cc: Paul Mundt Acked-by: David Miller Cc: Chris Zankel LKML-Reference: <20110126195833.679641914@linutronix.de> Signed-off-by: Thomas Gleixner --- include/linux/rwsem.h | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/rwsem.h b/include/linux/rwsem.h index 496296d12d62..e8be18edb664 100644 --- a/include/linux/rwsem.h +++ b/include/linux/rwsem.h @@ -22,7 +22,18 @@ struct rw_semaphore; #ifdef CONFIG_RWSEM_GENERIC_SPINLOCK #include /* use a generic implementation */ #else -#include /* use an arch-specific implementation */ +/* All arch specific implementations share the same struct */ +struct rw_semaphore { + long count; + spinlock_t wait_lock; + struct list_head wait_list; +#ifdef CONFIG_DEBUG_LOCK_ALLOC + struct lockdep_map dep_map; +#endif +}; + +/* Include the arch specific part */ +#include #endif /* -- cgit v1.2.3 From 12249b34414dba7f386aadcf6be7ca36c6878300 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Wed, 26 Jan 2011 20:06:00 +0000 Subject: rwsem: Move duplicate init macros and functions to linux/rwsem.h The rwsem initializers and related macros and functions are mostly the same. Some of them lack the lockdep initializer, but having it in place does not matter for architectures which do not support lockdep. powerpc, sparc, x86: No functional change sh, s390: Removes the duplicate init_rwsem (inline and #define) alpha, ia64, xtensa: Use the lockdep capable init function in lib/rwsem.c which is just uninlining the init function for the LOCKDEP=n case Signed-off-by: Thomas Gleixner Cc: Peter Zijlstra Cc: David Howells Cc: Benjamin Herrenschmidt Cc: Matt Turner Acked-by: Tony Luck Acked-by: Heiko Carstens Cc: Paul Mundt Acked-by: David Miller Cc: Chris Zankel LKML-Reference: <20110126195833.771812729@linutronix.de> --- include/linux/rwsem-spinlock.h | 23 +---------------------- include/linux/rwsem.h | 25 +++++++++++++++++++++++++ 2 files changed, 26 insertions(+), 22 deletions(-) (limited to 'include/linux') diff --git a/include/linux/rwsem-spinlock.h b/include/linux/rwsem-spinlock.h index 8c0dc7fc07a4..34701241b673 100644 --- a/include/linux/rwsem-spinlock.h +++ b/include/linux/rwsem-spinlock.h @@ -29,28 +29,7 @@ struct rw_semaphore { #endif }; -#ifdef CONFIG_DEBUG_LOCK_ALLOC -# define __RWSEM_DEP_MAP_INIT(lockname) , .dep_map = { .name = #lockname } -#else -# define __RWSEM_DEP_MAP_INIT(lockname) -#endif - -#define __RWSEM_INITIALIZER(name) \ -{ 0, __SPIN_LOCK_UNLOCKED(name.wait_lock), LIST_HEAD_INIT((name).wait_list) \ - __RWSEM_DEP_MAP_INIT(name) } - -#define DECLARE_RWSEM(name) \ - struct rw_semaphore name = __RWSEM_INITIALIZER(name) - -extern void __init_rwsem(struct rw_semaphore *sem, const char *name, - struct lock_class_key *key); - -#define init_rwsem(sem) \ -do { \ - static struct lock_class_key __key; \ - \ - __init_rwsem((sem), #sem, &__key); \ -} while (0) +#define RWSEM_UNLOCKED_VALUE 0x00000000 extern void __down_read(struct rw_semaphore *sem); extern int __down_read_trylock(struct rw_semaphore *sem); diff --git a/include/linux/rwsem.h b/include/linux/rwsem.h index e8be18edb664..8970c3e802e2 100644 --- a/include/linux/rwsem.h +++ b/include/linux/rwsem.h @@ -36,6 +36,31 @@ struct rw_semaphore { #include #endif +/* Common initializer macros and functions */ + +#ifdef CONFIG_DEBUG_LOCK_ALLOC +# define __RWSEM_DEP_MAP_INIT(lockname) , .dep_map = { .name = #lockname } +#else +# define __RWSEM_DEP_MAP_INIT(lockname) +#endif + +#define __RWSEM_INITIALIZER(name) \ + { RWSEM_UNLOCKED_VALUE, __SPIN_LOCK_UNLOCKED(name.wait_lock), \ + LIST_HEAD_INIT((name).wait_list) __RWSEM_DEP_MAP_INIT(name) } + +#define DECLARE_RWSEM(name) \ + struct rw_semaphore name = __RWSEM_INITIALIZER(name) + +extern void __init_rwsem(struct rw_semaphore *sem, const char *name, + struct lock_class_key *key); + +#define init_rwsem(sem) \ +do { \ + static struct lock_class_key __key; \ + \ + __init_rwsem((sem), #sem, &__key); \ +} while (0) + /* * lock for reading */ -- cgit v1.2.3 From 41e5887fa39ab272d9266a09cbefdef270e28b93 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Wed, 26 Jan 2011 20:06:03 +0000 Subject: rwsem: Unify the duplicate rwsem_is_locked() inlines Instead of having the same implementation in each architecture, move it to linux/rwsem.h and remove the duplicates. It's unlikely that an arch will ever implement something different, but we can deal with that when it happens. Signed-off-by: Thomas Gleixner Cc: Peter Zijlstra Cc: David Howells Cc: Benjamin Herrenschmidt Cc: Matt Turner Acked-by: Tony Luck Acked-by: Heiko Carstens Cc: Paul Mundt Acked-by: David Miller Cc: Chris Zankel LKML-Reference: <20110126195833.876773757@linutronix.de> Signed-off-by: Thomas Gleixner --- include/linux/rwsem.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/rwsem.h b/include/linux/rwsem.h index 8970c3e802e2..8b9c7e9f6910 100644 --- a/include/linux/rwsem.h +++ b/include/linux/rwsem.h @@ -34,6 +34,13 @@ struct rw_semaphore { /* Include the arch specific part */ #include + +/* In all implementations count != 0 means locked */ +static inline int rwsem_is_locked(struct rw_semaphore *sem) +{ + return sem->count != 0; +} + #endif /* Common initializer macros and functions */ -- cgit v1.2.3 From aac72277fda6ef788bb8d5deaa502ce9b9b6e472 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Wed, 26 Jan 2011 20:06:06 +0000 Subject: rwsem: Move duplicate function prototypes to linux/rwsem.h All architecture specific rwsem headers carry the same function prototypes. Just x86 adds asmregparm, which is an empty define on all other architectures. S390 has a stale rwsem_downgrade_write() prototype. Remove the duplicates and add the prototypes to linux/rwsem.h Signed-off-by: Thomas Gleixner Cc: Peter Zijlstra Cc: David Howells Cc: Benjamin Herrenschmidt Cc: Richard Henderson Acked-by: Tony Luck Acked-by: Heiko Carstens Cc: Paul Mundt Acked-by: David Miller Cc: Chris Zankel LKML-Reference: <20110126195833.970840140@linutronix.de> Signed-off-by: Thomas Gleixner --- include/linux/rwsem.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/rwsem.h b/include/linux/rwsem.h index 8b9c7e9f6910..f7c957f3165f 100644 --- a/include/linux/rwsem.h +++ b/include/linux/rwsem.h @@ -32,6 +32,11 @@ struct rw_semaphore { #endif }; +extern asmregparm struct rw_semaphore *rwsem_down_read_failed(struct rw_semaphore *sem); +extern asmregparm struct rw_semaphore *rwsem_down_write_failed(struct rw_semaphore *sem); +extern asmregparm struct rw_semaphore *rwsem_wake(struct rw_semaphore *); +extern asmregparm struct rw_semaphore *rwsem_downgrade_wake(struct rw_semaphore *sem); + /* Include the arch specific part */ #include -- cgit v1.2.3 From d123375425d7df4b6081a631fc1203fceafa59b2 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Wed, 26 Jan 2011 21:32:01 +0100 Subject: rwsem: Remove redundant asmregparm annotation Peter Zijlstra pointed out, that the only user of asmregparm (x86) is compiling the kernel already with -mregparm=3. So the annotation of the rwsem functions is redundant. Remove it. Signed-off-by: Thomas Gleixner Cc: Peter Zijlstra Cc: David Howells Cc: Benjamin Herrenschmidt Cc: Matt Turner Cc: Tony Luck Cc: Heiko Carstens Cc: Paul Mundt Cc: David Miller Cc: Chris Zankel LKML-Reference: Signed-off-by: Thomas Gleixner --- include/linux/rwsem.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/rwsem.h b/include/linux/rwsem.h index f7c957f3165f..a8afe9cd000c 100644 --- a/include/linux/rwsem.h +++ b/include/linux/rwsem.h @@ -32,10 +32,10 @@ struct rw_semaphore { #endif }; -extern asmregparm struct rw_semaphore *rwsem_down_read_failed(struct rw_semaphore *sem); -extern asmregparm struct rw_semaphore *rwsem_down_write_failed(struct rw_semaphore *sem); -extern asmregparm struct rw_semaphore *rwsem_wake(struct rw_semaphore *); -extern asmregparm struct rw_semaphore *rwsem_downgrade_wake(struct rw_semaphore *sem); +extern struct rw_semaphore *rwsem_down_read_failed(struct rw_semaphore *sem); +extern struct rw_semaphore *rwsem_down_write_failed(struct rw_semaphore *sem); +extern struct rw_semaphore *rwsem_wake(struct rw_semaphore *); +extern struct rw_semaphore *rwsem_downgrade_wake(struct rw_semaphore *sem); /* Include the arch specific part */ #include -- cgit v1.2.3 From ccf434380d1a67df2dcb9113206b77d0cb0a1cef Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Wed, 26 Jan 2011 18:08:02 +0000 Subject: net: fix dev_seq_next() Commit c6d14c84566d (net: Introduce for_each_netdev_rcu() iterator) added a race in dev_seq_next(). The rcu_dereference() call should be done _before_ testing the end of list, or we might return a wrong net_device if a concurrent thread changes net_device list under us. Note : discovered thanks to a sparse warning : net/core/dev.c:3919:9: error: incompatible types in comparison expression (different address spaces) Signed-off-by: Eric Dumazet CC: Paul E. McKenney Signed-off-by: David S. Miller --- include/linux/netdevice.h | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 8858422c5c5d..c7d707452228 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -1447,7 +1447,7 @@ static inline struct net_device *next_net_device_rcu(struct net_device *dev) struct net *net; net = dev_net(dev); - lh = rcu_dereference(dev->dev_list.next); + lh = rcu_dereference(list_next_rcu(&dev->dev_list)); return lh == &net->dev_base_head ? NULL : net_device_entry(lh); } @@ -1457,6 +1457,13 @@ static inline struct net_device *first_net_device(struct net *net) net_device_entry(net->dev_base_head.next); } +static inline struct net_device *first_net_device_rcu(struct net *net) +{ + struct list_head *lh = rcu_dereference(list_next_rcu(&net->dev_base_head)); + + return lh == &net->dev_base_head ? NULL : net_device_entry(lh); +} + extern int netdev_boot_setup_check(struct net_device *dev); extern unsigned long netdev_boot_base(const char *prefix, int unit); extern struct net_device *dev_getbyhwaddr_rcu(struct net *net, unsigned short type, -- cgit v1.2.3 From f301c062dcdd113bc977ae1ebc8c12232f8531a9 Mon Sep 17 00:00:00 2001 From: Jamie Iles Date: Fri, 21 Jan 2011 14:11:53 +0000 Subject: dmaengine/dw_dmac: allow src/dst masters to be configured at runtime Some platforms have flexible mastering capabilities and this needs to be selected at runtime. If the platform has specified private data in the form of the dw_dma_slave then fetch the source and destination masters from here. If this isn't present, default to the previous of 0 and 1. v2: cleanup whitespace Acked-by: Hans-Christian Egtvedt Signed-off-by: Jamie Iles Signed-off-by: Dan Williams --- include/linux/dw_dmac.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/dw_dmac.h b/include/linux/dw_dmac.h index c8aad713a046..8014eb81054d 100644 --- a/include/linux/dw_dmac.h +++ b/include/linux/dw_dmac.h @@ -52,6 +52,8 @@ struct dw_dma_slave { enum dw_dma_slave_width reg_width; u32 cfg_hi; u32 cfg_lo; + int src_master; + int dst_master; }; /* Platform-configurable bits in CFG_HI */ -- cgit v1.2.3 From 95ea759e9e116dade3e7386be2a3db76c90f4675 Mon Sep 17 00:00:00 2001 From: Jamie Iles Date: Fri, 21 Jan 2011 14:11:54 +0000 Subject: dmaengine/dw_dmac: provide a mechanism to indicate private devices Some platforms (e.g. Picochip PC3XX) have multiple DMA controllers where some may be used for slave transfers and others for general purpose memcpy type transfers. Add a .is_private boolean to the platform data structure so that controllers can be marked as private so that the DMA_PRIVATE capability will be set for that controller. Signed-off-by: Jamie Iles Signed-off-by: Dan Williams --- include/linux/dw_dmac.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/dw_dmac.h b/include/linux/dw_dmac.h index 8014eb81054d..deec66b37180 100644 --- a/include/linux/dw_dmac.h +++ b/include/linux/dw_dmac.h @@ -16,9 +16,12 @@ /** * struct dw_dma_platform_data - Controller configuration parameters * @nr_channels: Number of channels supported by hardware (max 8) + * @is_private: The device channels should be marked as private and not for + * by the general purpose DMA channel allocator. */ struct dw_dma_platform_data { unsigned int nr_channels; + bool is_private; }; /** -- cgit v1.2.3 From 52fe7c9cc1637110ba4e0e6fe5d07cc0786d62de Mon Sep 17 00:00:00 2001 From: "sjur.brandeland@stericsson.com" Date: Sat, 29 Jan 2011 13:10:37 +0000 Subject: caif: bugfix - add caif headers for userspace usage. Add caif_socket.h and if_caif.h to the kernel header files exported for use by userspace. Signed-off-by: Sjur Braendeland Signed-off-by: David S. Miller --- include/linux/Kbuild | 1 + include/linux/caif/Kbuild | 2 ++ 2 files changed, 3 insertions(+) create mode 100644 include/linux/caif/Kbuild (limited to 'include/linux') diff --git a/include/linux/Kbuild b/include/linux/Kbuild index 2296d8b1931f..b0ada6f37dd6 100644 --- a/include/linux/Kbuild +++ b/include/linux/Kbuild @@ -1,5 +1,6 @@ header-y += byteorder/ header-y += can/ +header-y += caif/ header-y += dvb/ header-y += hdlc/ header-y += isdn/ diff --git a/include/linux/caif/Kbuild b/include/linux/caif/Kbuild new file mode 100644 index 000000000000..a9cf250689dc --- /dev/null +++ b/include/linux/caif/Kbuild @@ -0,0 +1,2 @@ +header-y += caif_socket.h +header-y += if_caif.h -- cgit v1.2.3 From 709b46e8d90badda1898caea50483c12af178e96 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Sat, 29 Jan 2011 16:15:56 +0000 Subject: net: Add compat ioctl support for the ipv4 multicast ioctl SIOCGETSGCNT SIOCGETSGCNT is not a unique ioctl value as it it maps tio SIOCPROTOPRIVATE +1, which unfortunately means the existing infrastructure for compat networking ioctls is insufficient. A trivial compact ioctl implementation would conflict with: SIOCAX25ADDUID SIOCAIPXPRISLT SIOCGETSGCNT_IN6 SIOCGETSGCNT SIOCRSSCAUSE SIOCX25SSUBSCRIP SIOCX25SDTEFACILITIES To make this work I have updated the compat_ioctl decode path to mirror the the normal ioctl decode path. I have added an ipv4 inet_compat_ioctl function so that I can have ipv4 specific compat ioctls. I have added a compat_ioctl function into struct proto so I can break out ioctls by which kind of ip socket I am using. I have added a compat_raw_ioctl function because SIOCGETSGCNT only works on raw sockets. I have added a ipmr_compat_ioctl that mirrors the normal ipmr_ioctl. This was necessary because unfortunately the struct layout for the SIOCGETSGCNT has unsigned longs in it so changes between 32bit and 64bit kernels. This change was sufficient to run a 32bit ip multicast routing daemon on a 64bit kernel. Reported-by: Bill Fenner Signed-off-by: Eric W. Biederman Signed-off-by: David S. Miller --- include/linux/mroute.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/mroute.h b/include/linux/mroute.h index 0fa7a3a874c8..b21d567692b2 100644 --- a/include/linux/mroute.h +++ b/include/linux/mroute.h @@ -150,6 +150,7 @@ static inline int ip_mroute_opt(int opt) extern int ip_mroute_setsockopt(struct sock *, int, char __user *, unsigned int); extern int ip_mroute_getsockopt(struct sock *, int, char __user *, int __user *); extern int ipmr_ioctl(struct sock *sk, int cmd, void __user *arg); +extern int ipmr_compat_ioctl(struct sock *sk, unsigned int cmd, void __user *arg); extern int ip_mr_init(void); #else static inline -- cgit v1.2.3 From 00cfa730db0d8378685148e6365b9cec7384b275 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Sun, 30 Jan 2011 12:31:30 -0800 Subject: Input: wm831x - add driver for Wolfson WM831x PMIC touchscreen controllers Some of the WM831x series of PMICs from Wolfson Microelectronics include a resistive touchscreen controller. Implement support for these controllers within the input API. Platform data is supported to allow configuration of system parameters such as selection between four and five wire touchscreens and for specification of optional direct to CPU IRQs for sample availability and for pen down. Use of this feature for at least the data IRQ is strongly recommended. Thanks to Julien Boibessot for extensive testing and detailed feedback. Signed-off-by: Mark Brown Tested-by: Julien Boibessot Signed-off-by: Dmitry Torokhov --- include/linux/mfd/wm831x/pdata.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mfd/wm831x/pdata.h b/include/linux/mfd/wm831x/pdata.h index fd322aca33ba..173086d42af4 100644 --- a/include/linux/mfd/wm831x/pdata.h +++ b/include/linux/mfd/wm831x/pdata.h @@ -80,7 +80,8 @@ struct wm831x_touch_pdata { int isel; /** Current for pen down (uA) */ int rpu; /** Pen down sensitivity resistor divider */ int pressure; /** Report pressure (boolean) */ - int data_irq; /** Touch data ready IRQ */ + unsigned int data_irq; /** Touch data ready IRQ */ + unsigned int pd_irq; /** Touch pendown detect IRQ */ }; enum wm831x_watchdog_action { -- cgit v1.2.3 From 51d07566045787b99219d809639c8724506fc78a Mon Sep 17 00:00:00 2001 From: Rhyland Klein Date: Tue, 25 Jan 2011 11:10:06 -0800 Subject: bq20z75: Add support for charge properties Adding support for charge properties for gas gauge. Also ensuring that battery mode is correct now for energy as well as charge properties by setting it on the fly. I also added 2 functions to power_supply.h to help identify the units for specific properties more easily by power supplies. Signed-off-by: Rhyland Klein Signed-off-by: Anton Vorontsov --- include/linux/power_supply.h | 44 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) (limited to 'include/linux') diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h index 7d7325685c42..e3419fc5541e 100644 --- a/include/linux/power_supply.h +++ b/include/linux/power_supply.h @@ -213,4 +213,48 @@ extern void power_supply_unregister(struct power_supply *psy); /* For APM emulation, think legacy userspace. */ extern struct class *power_supply_class; +static inline bool power_supply_is_amp_property(enum power_supply_property psp) +{ + switch (psp) { + case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN: + case POWER_SUPPLY_PROP_CHARGE_EMPTY_DESIGN: + case POWER_SUPPLY_PROP_CHARGE_FULL: + case POWER_SUPPLY_PROP_CHARGE_EMPTY: + case POWER_SUPPLY_PROP_CHARGE_NOW: + case POWER_SUPPLY_PROP_CHARGE_AVG: + case POWER_SUPPLY_PROP_CHARGE_COUNTER: + case POWER_SUPPLY_PROP_CURRENT_MAX: + case POWER_SUPPLY_PROP_CURRENT_NOW: + case POWER_SUPPLY_PROP_CURRENT_AVG: + return 1; + default: + break; + } + + return 0; +} + +static inline bool power_supply_is_watt_property(enum power_supply_property psp) +{ + switch (psp) { + case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN: + case POWER_SUPPLY_PROP_ENERGY_EMPTY_DESIGN: + case POWER_SUPPLY_PROP_ENERGY_FULL: + case POWER_SUPPLY_PROP_ENERGY_EMPTY: + case POWER_SUPPLY_PROP_ENERGY_NOW: + case POWER_SUPPLY_PROP_ENERGY_AVG: + case POWER_SUPPLY_PROP_VOLTAGE_MAX: + case POWER_SUPPLY_PROP_VOLTAGE_MIN: + case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN: + case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: + case POWER_SUPPLY_PROP_VOLTAGE_NOW: + case POWER_SUPPLY_PROP_VOLTAGE_AVG: + return 1; + default: + break; + } + + return 0; +} + #endif /* __LINUX_POWER_SUPPLY_H__ */ -- cgit v1.2.3 From 0b9536c957095eb1497828aa51b34ac695f67eae Mon Sep 17 00:00:00 2001 From: Vasily Khoruzhick Date: Fri, 7 Jan 2011 16:28:16 +0000 Subject: leds: Add ability to blink via simple trigger As blink API is now available, it's possible to add ability to blink via simple trigger. Signed-off-by: Vasily Khoruzhick Signed-off-by: Anton Vorontsov --- include/linux/leds.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/leds.h b/include/linux/leds.h index 0f19df9e37b0..ffd5c3d91193 100644 --- a/include/linux/leds.h +++ b/include/linux/leds.h @@ -145,6 +145,9 @@ extern void led_trigger_register_simple(const char *name, extern void led_trigger_unregister_simple(struct led_trigger *trigger); extern void led_trigger_event(struct led_trigger *trigger, enum led_brightness event); +extern void led_trigger_blink(struct led_trigger *trigger, + unsigned long *delay_on, + unsigned long *delay_off); #else -- cgit v1.2.3 From 6501f728c56f831626d52b236023e556bca37f51 Mon Sep 17 00:00:00 2001 From: Vasily Khoruzhick Date: Fri, 7 Jan 2011 18:28:17 +0200 Subject: power_supply: Add new LED trigger charging-blink-solid-full Add new trigger to power_supply LEDs. It will blink when battery is charging, and stay solid when battery is charged. It's usefull to indicate battery state when there's only one LED available. Signed-off-by: Vasily Khoruzhick Signed-off-by: Anton Vorontsov --- include/linux/power_supply.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h index e3419fc5541e..20f23fef63cc 100644 --- a/include/linux/power_supply.h +++ b/include/linux/power_supply.h @@ -173,6 +173,8 @@ struct power_supply { char *full_trig_name; struct led_trigger *online_trig; char *online_trig_name; + struct led_trigger *charging_blink_full_solid_trig; + char *charging_blink_full_solid_trig_name; #endif }; -- cgit v1.2.3 From 871cf1e5f2a17702f58539a3af8b18fc8666ad4c Mon Sep 17 00:00:00 2001 From: Torben Hohn Date: Thu, 27 Jan 2011 15:58:55 +0100 Subject: time: Move do_timer() to kernel/time/timekeeping.c do_timer() is primary timekeeping related. calc_global_load() is called from do_timer() as well, but that's more for historical reasons. [ tglx: Fixed up the calc_global_load() reject andmassaged changelog ] Signed-off-by: Torben Hohn Cc: Peter Zijlstra Cc: johnstul@us.ibm.com Cc: yong.zhang0@gmail.com Cc: hch@infradead.org LKML-Reference: <20110127145855.23248.56933.stgit@localhost> Signed-off-by: Thomas Gleixner --- include/linux/time.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/time.h b/include/linux/time.h index 1e6d3b59238d..86a9c487fdd8 100644 --- a/include/linux/time.h +++ b/include/linux/time.h @@ -166,7 +166,6 @@ extern void monotonic_to_bootbased(struct timespec *ts); extern struct timespec timespec_trunc(struct timespec t, unsigned gran); extern int timekeeping_valid_for_hres(void); extern u64 timekeeping_max_deferment(void); -extern void update_wall_time(void); extern void timekeeping_leap_insert(int leapsecond); struct tms; -- cgit v1.2.3 From 48cf76f7104f655bbd48a75c7759dce82c3e1ab6 Mon Sep 17 00:00:00 2001 From: Torben Hohn Date: Thu, 27 Jan 2011 15:59:05 +0100 Subject: time: Provide get_xtime_and_monotonic_offset() The hrtimer code accesses timekeeping variables under xtime_lock. Provide a sensible accessor function and use it. [ tglx: Removed the conditionals, unused variable, fixed codingstyle and massaged changelog ] Signed-off-by: Torben Hohn Cc: Peter Zijlstra Cc: johnstul@us.ibm.com Cc: yong.zhang0@gmail.com Cc: hch@infradead.org LKML-Reference: <20110127145905.23248.30458.stgit@localhost> Signed-off-by: Thomas Gleixner --- include/linux/time.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/time.h b/include/linux/time.h index 86a9c487fdd8..4007a12a1b50 100644 --- a/include/linux/time.h +++ b/include/linux/time.h @@ -127,6 +127,7 @@ struct timespec current_kernel_time(void); struct timespec __current_kernel_time(void); /* does not take xtime_lock */ struct timespec __get_wall_to_monotonic(void); /* does not take xtime_lock */ struct timespec get_monotonic_coarse(void); +void get_xtime_and_monotonic_offset(struct timespec *xtim, struct timespec *wtom); #define CURRENT_TIME (current_kernel_time()) #define CURRENT_TIME_SEC ((struct timespec) { get_seconds(), 0 }) -- cgit v1.2.3 From 79ecaf0d15344d78904becf0f25de3fc9b49d430 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Mon, 31 Jan 2011 11:07:54 +0100 Subject: time: Remove unused __get_wall_to_monotonic() No users left. Remove it. Signed-off-by: Thomas Gleixner --- include/linux/time.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/time.h b/include/linux/time.h index 4007a12a1b50..ce29c86882b1 100644 --- a/include/linux/time.h +++ b/include/linux/time.h @@ -125,7 +125,6 @@ extern int timekeeping_suspended; unsigned long get_seconds(void); struct timespec current_kernel_time(void); struct timespec __current_kernel_time(void); /* does not take xtime_lock */ -struct timespec __get_wall_to_monotonic(void); /* does not take xtime_lock */ struct timespec get_monotonic_coarse(void); void get_xtime_and_monotonic_offset(struct timespec *xtim, struct timespec *wtom); -- cgit v1.2.3 From f0af911a9dec9de702645182c8d269449e24d24b Mon Sep 17 00:00:00 2001 From: Torben Hohn Date: Thu, 27 Jan 2011 15:59:10 +0100 Subject: time: Provide xtime_update() xtime_update() takes xtime_lock write locked and calls do_timer(). Provided to replace the do_timer() calls in the architecture code. Signed-off-by: Torben Hohn Cc: Peter Zijlstra Cc: johnstul@us.ibm.com Cc: yong.zhang0@gmail.com Cc: hch@infradead.org LKML-Reference: <20110127145910.23248.21379.stgit@localhost> Signed-off-by: Thomas Gleixner --- include/linux/sched.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index d747f948b34e..9d9a0787eed3 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -2050,6 +2050,7 @@ extern void release_uids(struct user_namespace *ns); #include extern void do_timer(unsigned long ticks); +extern void xtime_update(unsigned long ticks); extern int wake_up_state(struct task_struct *tsk, unsigned int state); extern int wake_up_process(struct task_struct *tsk); -- cgit v1.2.3 From e2830b5c1b2b2217894370a3b95af87d4a958401 Mon Sep 17 00:00:00 2001 From: Torben Hohn Date: Thu, 27 Jan 2011 16:00:32 +0100 Subject: time: Make do_timer() and xtime_lock local to kernel/time/ All callers of do_timer() are converted to xtime_update(). The only users of xtime_lock are in kernel/time/. Make both local to kernel/time/ and remove them from the global header files. [ tglx: Reuse tick-internal.h instead of creating another local header file. Massaged changelog ] Signed-off-by: Torben Hohn Cc: Peter Zijlstra Cc: johnstul@us.ibm.com Cc: yong.zhang0@gmail.com Cc: hch@infradead.org Signed-off-by: Thomas Gleixner --- include/linux/sched.h | 1 - include/linux/time.h | 2 -- 2 files changed, 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index 9d9a0787eed3..cdef640aa446 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -2049,7 +2049,6 @@ extern void release_uids(struct user_namespace *ns); #include -extern void do_timer(unsigned long ticks); extern void xtime_update(unsigned long ticks); extern int wake_up_state(struct task_struct *tsk, unsigned int state); diff --git a/include/linux/time.h b/include/linux/time.h index ce29c86882b1..38c5206c2673 100644 --- a/include/linux/time.h +++ b/include/linux/time.h @@ -113,8 +113,6 @@ static inline struct timespec timespec_sub(struct timespec lhs, #define timespec_valid(ts) \ (((ts)->tv_sec >= 0) && (((unsigned long) (ts)->tv_nsec) < NSEC_PER_SEC)) -extern seqlock_t xtime_lock; - extern void read_persistent_clock(struct timespec *ts); extern void read_boot_clock(struct timespec *ts); extern int update_persistent_clock(struct timespec now); -- cgit v1.2.3 From a6238f21736af3f47bdebf3895f477f5f23f1af9 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Tue, 25 Jan 2011 23:17:27 +0100 Subject: appletalk: move to staging For all I know, Appletalk is dead, the only reasonable use right now would be nostalgia, and that can be served well enough by old kernels. The code is largely not in a bad shape, but it still uses the big kernel lock, and nobody seems motivated to change that. FWIW, the last release of MacOS that supported Appletalk was MacOS X 10.5, made in 2007, and it has been abandoned by Apple with 10.6. Using TCP/IP instead of Appletalk has been supported since MacOS 7.6, which was released in 1997 and is able to run on most of the legacy hardware. Signed-off-by: Arnd Bergmann Cc: Arnaldo Carvalho de Melo Cc: netdev@vger.kernel.org Signed-off-by: Greg Kroah-Hartman --- include/linux/Kbuild | 1 - include/linux/atalk.h | 208 -------------------------------------------------- 2 files changed, 209 deletions(-) delete mode 100644 include/linux/atalk.h (limited to 'include/linux') diff --git a/include/linux/Kbuild b/include/linux/Kbuild index 2296d8b1931f..362041b73a2f 100644 --- a/include/linux/Kbuild +++ b/include/linux/Kbuild @@ -43,7 +43,6 @@ header-y += agpgart.h header-y += aio_abi.h header-y += apm_bios.h header-y += arcfb.h -header-y += atalk.h header-y += atm.h header-y += atm_eni.h header-y += atm_he.h diff --git a/include/linux/atalk.h b/include/linux/atalk.h deleted file mode 100644 index d34c187432ed..000000000000 --- a/include/linux/atalk.h +++ /dev/null @@ -1,208 +0,0 @@ -#ifndef __LINUX_ATALK_H__ -#define __LINUX_ATALK_H__ - -#include -#include - -/* - * AppleTalk networking structures - * - * The following are directly referenced from the University Of Michigan - * netatalk for compatibility reasons. - */ -#define ATPORT_FIRST 1 -#define ATPORT_RESERVED 128 -#define ATPORT_LAST 254 /* 254 is only legal on localtalk */ -#define ATADDR_ANYNET (__u16)0 -#define ATADDR_ANYNODE (__u8)0 -#define ATADDR_ANYPORT (__u8)0 -#define ATADDR_BCAST (__u8)255 -#define DDP_MAXSZ 587 -#define DDP_MAXHOPS 15 /* 4 bits of hop counter */ - -#define SIOCATALKDIFADDR (SIOCPROTOPRIVATE + 0) - -struct atalk_addr { - __be16 s_net; - __u8 s_node; -}; - -struct sockaddr_at { - sa_family_t sat_family; - __u8 sat_port; - struct atalk_addr sat_addr; - char sat_zero[8]; -}; - -struct atalk_netrange { - __u8 nr_phase; - __be16 nr_firstnet; - __be16 nr_lastnet; -}; - -#ifdef __KERNEL__ - -#include - -struct atalk_route { - struct net_device *dev; - struct atalk_addr target; - struct atalk_addr gateway; - int flags; - struct atalk_route *next; -}; - -/** - * struct atalk_iface - AppleTalk Interface - * @dev - Network device associated with this interface - * @address - Our address - * @status - What are we doing? - * @nets - Associated direct netrange - * @next - next element in the list of interfaces - */ -struct atalk_iface { - struct net_device *dev; - struct atalk_addr address; - int status; -#define ATIF_PROBE 1 /* Probing for an address */ -#define ATIF_PROBE_FAIL 2 /* Probe collided */ - struct atalk_netrange nets; - struct atalk_iface *next; -}; - -struct atalk_sock { - /* struct sock has to be the first member of atalk_sock */ - struct sock sk; - __be16 dest_net; - __be16 src_net; - unsigned char dest_node; - unsigned char src_node; - unsigned char dest_port; - unsigned char src_port; -}; - -static inline struct atalk_sock *at_sk(struct sock *sk) -{ - return (struct atalk_sock *)sk; -} - -struct ddpehdr { - __be16 deh_len_hops; /* lower 10 bits are length, next 4 - hops */ - __be16 deh_sum; - __be16 deh_dnet; - __be16 deh_snet; - __u8 deh_dnode; - __u8 deh_snode; - __u8 deh_dport; - __u8 deh_sport; - /* And netatalk apps expect to stick the type in themselves */ -}; - -static __inline__ struct ddpehdr *ddp_hdr(struct sk_buff *skb) -{ - return (struct ddpehdr *)skb_transport_header(skb); -} - -/* AppleTalk AARP headers */ -struct elapaarp { - __be16 hw_type; -#define AARP_HW_TYPE_ETHERNET 1 -#define AARP_HW_TYPE_TOKENRING 2 - __be16 pa_type; - __u8 hw_len; - __u8 pa_len; -#define AARP_PA_ALEN 4 - __be16 function; -#define AARP_REQUEST 1 -#define AARP_REPLY 2 -#define AARP_PROBE 3 - __u8 hw_src[ETH_ALEN]; - __u8 pa_src_zero; - __be16 pa_src_net; - __u8 pa_src_node; - __u8 hw_dst[ETH_ALEN]; - __u8 pa_dst_zero; - __be16 pa_dst_net; - __u8 pa_dst_node; -} __attribute__ ((packed)); - -static __inline__ struct elapaarp *aarp_hdr(struct sk_buff *skb) -{ - return (struct elapaarp *)skb_transport_header(skb); -} - -/* Not specified - how long till we drop a resolved entry */ -#define AARP_EXPIRY_TIME (5 * 60 * HZ) -/* Size of hash table */ -#define AARP_HASH_SIZE 16 -/* Fast retransmission timer when resolving */ -#define AARP_TICK_TIME (HZ / 5) -/* Send 10 requests then give up (2 seconds) */ -#define AARP_RETRANSMIT_LIMIT 10 -/* - * Some value bigger than total retransmit time + a bit for last reply to - * appear and to stop continual requests - */ -#define AARP_RESOLVE_TIME (10 * HZ) - -extern struct datalink_proto *ddp_dl, *aarp_dl; -extern void aarp_proto_init(void); - -/* Inter module exports */ - -/* Give a device find its atif control structure */ -static inline struct atalk_iface *atalk_find_dev(struct net_device *dev) -{ - return dev->atalk_ptr; -} - -extern struct atalk_addr *atalk_find_dev_addr(struct net_device *dev); -extern struct net_device *atrtr_get_dev(struct atalk_addr *sa); -extern int aarp_send_ddp(struct net_device *dev, - struct sk_buff *skb, - struct atalk_addr *sa, void *hwaddr); -extern void aarp_device_down(struct net_device *dev); -extern void aarp_probe_network(struct atalk_iface *atif); -extern int aarp_proxy_probe_network(struct atalk_iface *atif, - struct atalk_addr *sa); -extern void aarp_proxy_remove(struct net_device *dev, - struct atalk_addr *sa); - -extern void aarp_cleanup_module(void); - -extern struct hlist_head atalk_sockets; -extern rwlock_t atalk_sockets_lock; - -extern struct atalk_route *atalk_routes; -extern rwlock_t atalk_routes_lock; - -extern struct atalk_iface *atalk_interfaces; -extern rwlock_t atalk_interfaces_lock; - -extern struct atalk_route atrtr_default; - -extern const struct file_operations atalk_seq_arp_fops; - -extern int sysctl_aarp_expiry_time; -extern int sysctl_aarp_tick_time; -extern int sysctl_aarp_retransmit_limit; -extern int sysctl_aarp_resolve_time; - -#ifdef CONFIG_SYSCTL -extern void atalk_register_sysctl(void); -extern void atalk_unregister_sysctl(void); -#else -#define atalk_register_sysctl() do { } while(0) -#define atalk_unregister_sysctl() do { } while(0) -#endif - -#ifdef CONFIG_PROC_FS -extern int atalk_proc_init(void); -extern void atalk_proc_exit(void); -#else -#define atalk_proc_init() ({ 0; }) -#define atalk_proc_exit() do { } while(0) -#endif /* CONFIG_PROC_FS */ - -#endif /* __KERNEL__ */ -#endif /* __LINUX_ATALK_H__ */ -- cgit v1.2.3 From 0ffbf8bf21db0186e9fbb024a1796c3148790578 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Mon, 31 Jan 2011 14:03:00 -0800 Subject: Revert "appletalk: move to staging" This reverts commit a6238f21736af3f47bdebf3895f477f5f23f1af9 Appletalk got some patches to fix up the BLK usage in it in the network tree, so this removal isn't needed. Cc: Arnd Bergmann Cc: Cc: netdev@vger.kernel.org, Cc: David Miller Signed-off-by: Greg Kroah-Hartman --- include/linux/Kbuild | 1 + include/linux/atalk.h | 208 ++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 209 insertions(+) create mode 100644 include/linux/atalk.h (limited to 'include/linux') diff --git a/include/linux/Kbuild b/include/linux/Kbuild index 362041b73a2f..2296d8b1931f 100644 --- a/include/linux/Kbuild +++ b/include/linux/Kbuild @@ -43,6 +43,7 @@ header-y += agpgart.h header-y += aio_abi.h header-y += apm_bios.h header-y += arcfb.h +header-y += atalk.h header-y += atm.h header-y += atm_eni.h header-y += atm_he.h diff --git a/include/linux/atalk.h b/include/linux/atalk.h new file mode 100644 index 000000000000..d34c187432ed --- /dev/null +++ b/include/linux/atalk.h @@ -0,0 +1,208 @@ +#ifndef __LINUX_ATALK_H__ +#define __LINUX_ATALK_H__ + +#include +#include + +/* + * AppleTalk networking structures + * + * The following are directly referenced from the University Of Michigan + * netatalk for compatibility reasons. + */ +#define ATPORT_FIRST 1 +#define ATPORT_RESERVED 128 +#define ATPORT_LAST 254 /* 254 is only legal on localtalk */ +#define ATADDR_ANYNET (__u16)0 +#define ATADDR_ANYNODE (__u8)0 +#define ATADDR_ANYPORT (__u8)0 +#define ATADDR_BCAST (__u8)255 +#define DDP_MAXSZ 587 +#define DDP_MAXHOPS 15 /* 4 bits of hop counter */ + +#define SIOCATALKDIFADDR (SIOCPROTOPRIVATE + 0) + +struct atalk_addr { + __be16 s_net; + __u8 s_node; +}; + +struct sockaddr_at { + sa_family_t sat_family; + __u8 sat_port; + struct atalk_addr sat_addr; + char sat_zero[8]; +}; + +struct atalk_netrange { + __u8 nr_phase; + __be16 nr_firstnet; + __be16 nr_lastnet; +}; + +#ifdef __KERNEL__ + +#include + +struct atalk_route { + struct net_device *dev; + struct atalk_addr target; + struct atalk_addr gateway; + int flags; + struct atalk_route *next; +}; + +/** + * struct atalk_iface - AppleTalk Interface + * @dev - Network device associated with this interface + * @address - Our address + * @status - What are we doing? + * @nets - Associated direct netrange + * @next - next element in the list of interfaces + */ +struct atalk_iface { + struct net_device *dev; + struct atalk_addr address; + int status; +#define ATIF_PROBE 1 /* Probing for an address */ +#define ATIF_PROBE_FAIL 2 /* Probe collided */ + struct atalk_netrange nets; + struct atalk_iface *next; +}; + +struct atalk_sock { + /* struct sock has to be the first member of atalk_sock */ + struct sock sk; + __be16 dest_net; + __be16 src_net; + unsigned char dest_node; + unsigned char src_node; + unsigned char dest_port; + unsigned char src_port; +}; + +static inline struct atalk_sock *at_sk(struct sock *sk) +{ + return (struct atalk_sock *)sk; +} + +struct ddpehdr { + __be16 deh_len_hops; /* lower 10 bits are length, next 4 - hops */ + __be16 deh_sum; + __be16 deh_dnet; + __be16 deh_snet; + __u8 deh_dnode; + __u8 deh_snode; + __u8 deh_dport; + __u8 deh_sport; + /* And netatalk apps expect to stick the type in themselves */ +}; + +static __inline__ struct ddpehdr *ddp_hdr(struct sk_buff *skb) +{ + return (struct ddpehdr *)skb_transport_header(skb); +} + +/* AppleTalk AARP headers */ +struct elapaarp { + __be16 hw_type; +#define AARP_HW_TYPE_ETHERNET 1 +#define AARP_HW_TYPE_TOKENRING 2 + __be16 pa_type; + __u8 hw_len; + __u8 pa_len; +#define AARP_PA_ALEN 4 + __be16 function; +#define AARP_REQUEST 1 +#define AARP_REPLY 2 +#define AARP_PROBE 3 + __u8 hw_src[ETH_ALEN]; + __u8 pa_src_zero; + __be16 pa_src_net; + __u8 pa_src_node; + __u8 hw_dst[ETH_ALEN]; + __u8 pa_dst_zero; + __be16 pa_dst_net; + __u8 pa_dst_node; +} __attribute__ ((packed)); + +static __inline__ struct elapaarp *aarp_hdr(struct sk_buff *skb) +{ + return (struct elapaarp *)skb_transport_header(skb); +} + +/* Not specified - how long till we drop a resolved entry */ +#define AARP_EXPIRY_TIME (5 * 60 * HZ) +/* Size of hash table */ +#define AARP_HASH_SIZE 16 +/* Fast retransmission timer when resolving */ +#define AARP_TICK_TIME (HZ / 5) +/* Send 10 requests then give up (2 seconds) */ +#define AARP_RETRANSMIT_LIMIT 10 +/* + * Some value bigger than total retransmit time + a bit for last reply to + * appear and to stop continual requests + */ +#define AARP_RESOLVE_TIME (10 * HZ) + +extern struct datalink_proto *ddp_dl, *aarp_dl; +extern void aarp_proto_init(void); + +/* Inter module exports */ + +/* Give a device find its atif control structure */ +static inline struct atalk_iface *atalk_find_dev(struct net_device *dev) +{ + return dev->atalk_ptr; +} + +extern struct atalk_addr *atalk_find_dev_addr(struct net_device *dev); +extern struct net_device *atrtr_get_dev(struct atalk_addr *sa); +extern int aarp_send_ddp(struct net_device *dev, + struct sk_buff *skb, + struct atalk_addr *sa, void *hwaddr); +extern void aarp_device_down(struct net_device *dev); +extern void aarp_probe_network(struct atalk_iface *atif); +extern int aarp_proxy_probe_network(struct atalk_iface *atif, + struct atalk_addr *sa); +extern void aarp_proxy_remove(struct net_device *dev, + struct atalk_addr *sa); + +extern void aarp_cleanup_module(void); + +extern struct hlist_head atalk_sockets; +extern rwlock_t atalk_sockets_lock; + +extern struct atalk_route *atalk_routes; +extern rwlock_t atalk_routes_lock; + +extern struct atalk_iface *atalk_interfaces; +extern rwlock_t atalk_interfaces_lock; + +extern struct atalk_route atrtr_default; + +extern const struct file_operations atalk_seq_arp_fops; + +extern int sysctl_aarp_expiry_time; +extern int sysctl_aarp_tick_time; +extern int sysctl_aarp_retransmit_limit; +extern int sysctl_aarp_resolve_time; + +#ifdef CONFIG_SYSCTL +extern void atalk_register_sysctl(void); +extern void atalk_unregister_sysctl(void); +#else +#define atalk_register_sysctl() do { } while(0) +#define atalk_unregister_sysctl() do { } while(0) +#endif + +#ifdef CONFIG_PROC_FS +extern int atalk_proc_init(void); +extern void atalk_proc_exit(void); +#else +#define atalk_proc_init() ({ 0; }) +#define atalk_proc_exit() do { } while(0) +#endif /* CONFIG_PROC_FS */ + +#endif /* __KERNEL__ */ +#endif /* __LINUX_ATALK_H__ */ -- cgit v1.2.3 From ffbbf2da9e578dc7b7ae4f945412c4b74f54b20e Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Mon, 31 Jan 2011 09:29:14 -0800 Subject: kernel.h: fix kernel-doc warning Fix kernel-doc warning in kernel.h from commit 7ef88ad56145 ("BUILD_BUG_ON: make it handle more cases"): Warning(include/linux/kernel.h:605): No description found for parameter 'condition' Warning(include/linux/kernel.h:605): Excess function parameter 'cond' description in 'BUILD_BUG_ON' Signed-off-by: Randy Dunlap Signed-off-by: Linus Torvalds --- include/linux/kernel.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/kernel.h b/include/linux/kernel.h index e2f4d6af2125..2fe6e84894a4 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -588,7 +588,7 @@ struct sysinfo { /** * BUILD_BUG_ON - break compile if a condition is true. - * @cond: the condition which the compiler should know is false. + * @condition: the condition which the compiler should know is false. * * If you have some code which relies on certain constants being equal, or * other compile-time-evaluated condition, you should use BUILD_BUG_ON to -- cgit v1.2.3 From aebd636bd60e2dda0ebc907dd5f7f4a45174411c Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Mon, 31 Jan 2011 21:06:39 -0800 Subject: Input: switch completely over to the new versions of get/setkeycode All users of old style get/setkeycode methids have been converted so it is time to retire them. Acked-by: Mauro Carvalho Chehab Acked-by: Jiri Kosina Signed-off-by: Dmitry Torokhov --- include/linux/input.h | 12 +++--------- 1 file changed, 3 insertions(+), 9 deletions(-) (limited to 'include/linux') diff --git a/include/linux/input.h b/include/linux/input.h index e428382ca28a..056ae8a5bd9b 100644 --- a/include/linux/input.h +++ b/include/linux/input.h @@ -1154,8 +1154,6 @@ struct ff_effect { * sparse keymaps. If not supplied default mechanism will be used. * The method is being called while holding event_lock and thus must * not sleep - * @getkeycode_new: transition method - * @setkeycode_new: transition method * @ff: force feedback structure associated with the device if device * supports force feedback effects * @repeat_key: stores key code of the last key pressed; used to implement @@ -1234,14 +1232,10 @@ struct input_dev { void *keycode; int (*setkeycode)(struct input_dev *dev, - unsigned int scancode, unsigned int keycode); + const struct input_keymap_entry *ke, + unsigned int *old_keycode); int (*getkeycode)(struct input_dev *dev, - unsigned int scancode, unsigned int *keycode); - int (*setkeycode_new)(struct input_dev *dev, - const struct input_keymap_entry *ke, - unsigned int *old_keycode); - int (*getkeycode_new)(struct input_dev *dev, - struct input_keymap_entry *ke); + struct input_keymap_entry *ke); struct ff_device *ff; -- cgit v1.2.3 From 2546bcc2d64c3bd0e7cb802cb8fc6cf757c6be0b Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Mon, 31 Jan 2011 21:06:34 -0800 Subject: Input: input-polldev - fix a couple of typos Signed-off-by: Dmitry Torokhov --- include/linux/input-polldev.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/input-polldev.h b/include/linux/input-polldev.h index 5e3dddf8f562..ce0b72464eb8 100644 --- a/include/linux/input-polldev.h +++ b/include/linux/input-polldev.h @@ -22,12 +22,12 @@ * @poll: driver-supplied method that polls the device and posts * input events (mandatory). * @poll_interval: specifies how often the poll() method should be called. - * Defaults to 500 msec unless overriden when registering the device. + * Defaults to 500 msec unless overridden when registering the device. * @poll_interval_max: specifies upper bound for the poll interval. * Defaults to the initial value of @poll_interval. * @poll_interval_min: specifies lower bound for the poll interval. * Defaults to 0. - * @input: input device structire associated with the polled device. + * @input: input device structure associated with the polled device. * Must be properly initialized by the driver (id, name, phys, bits). * * Polled input device provides a skeleton for supporting simple input -- cgit v1.2.3 From f703651ef870bd6b94ddc98ae07488b7d3fd9335 Mon Sep 17 00:00:00 2001 From: Jozsef Kadlecsik Date: Tue, 1 Feb 2011 15:20:14 +0100 Subject: netfilter: NFNL_SUBSYS_IPSET id and NLA_PUT_NET* macros The patch adds the NFNL_SUBSYS_IPSET id and NLA_PUT_NET* macros to the vanilla kernel. Signed-off-by: Jozsef Kadlecsik Signed-off-by: Patrick McHardy --- include/linux/netfilter/nfnetlink.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/netfilter/nfnetlink.h b/include/linux/netfilter/nfnetlink.h index 361d6b5630ee..2b11fc1a86be 100644 --- a/include/linux/netfilter/nfnetlink.h +++ b/include/linux/netfilter/nfnetlink.h @@ -47,7 +47,8 @@ struct nfgenmsg { #define NFNL_SUBSYS_QUEUE 3 #define NFNL_SUBSYS_ULOG 4 #define NFNL_SUBSYS_OSF 5 -#define NFNL_SUBSYS_COUNT 6 +#define NFNL_SUBSYS_IPSET 6 +#define NFNL_SUBSYS_COUNT 7 #ifdef __KERNEL__ -- cgit v1.2.3 From a7b4f989a629493bb4ec4a354def784d440b32c4 Mon Sep 17 00:00:00 2001 From: Jozsef Kadlecsik Date: Tue, 1 Feb 2011 15:28:35 +0100 Subject: netfilter: ipset: IP set core support The patch adds the IP set core support to the kernel. The IP set core implements a netlink (nfnetlink) based protocol by which one can create, destroy, flush, rename, swap, list, save, restore sets, and add, delete, test elements from userspace. For simplicity (and backward compatibilty and for not to force ip(6)tables to be linked with a netlink library) reasons a small getsockopt-based protocol is also kept in order to communicate with the ip(6)tables match and target. The netlink protocol passes all u16, etc values in network order with NLA_F_NET_BYTEORDER flag. The protocol enforces the proper use of the NLA_F_NESTED and NLA_F_NET_BYTEORDER flags. For other kernel subsystems (netfilter match and target) the API contains the functions to add, delete and test elements in sets and the required calls to get/put refereces to the sets before those operations can be performed. The set types (which are implemented in independent modules) are stored in a simple RCU protected list. A set type may have variants: for example without timeout or with timeout support, for IPv4 or for IPv6. The sets (i.e. the pointers to the sets) are stored in an array. The sets are identified by their index in the array, which makes possible easy and fast swapping of sets. The array is protected indirectly by the nfnl mutex from nfnetlink. The content of the sets are protected by the rwlock of the set. There are functional differences between the add/del/test functions for the kernel and userspace: - kernel add/del/test: works on the current packet (i.e. one element) - kernel test: may trigger an "add" operation in order to fill out unspecified parts of the element from the packet (like MAC address) - userspace add/del: works on the netlink message and thus possibly on multiple elements from the IPSET_ATTR_ADT container attribute. - userspace add: may trigger resizing of a set Signed-off-by: Jozsef Kadlecsik Signed-off-by: Patrick McHardy --- include/linux/netfilter/ipset/ip_set.h | 452 +++++++++++++++++++++++++ include/linux/netfilter/ipset/ip_set_getport.h | 11 + include/linux/netfilter/ipset/pfxlen.h | 35 ++ 3 files changed, 498 insertions(+) create mode 100644 include/linux/netfilter/ipset/ip_set.h create mode 100644 include/linux/netfilter/ipset/ip_set_getport.h create mode 100644 include/linux/netfilter/ipset/pfxlen.h (limited to 'include/linux') diff --git a/include/linux/netfilter/ipset/ip_set.h b/include/linux/netfilter/ipset/ip_set.h new file mode 100644 index 000000000000..ec333d83f3b4 --- /dev/null +++ b/include/linux/netfilter/ipset/ip_set.h @@ -0,0 +1,452 @@ +#ifndef _IP_SET_H +#define _IP_SET_H + +/* Copyright (C) 2000-2002 Joakim Axelsson + * Patrick Schaaf + * Martin Josefsson + * Copyright (C) 2003-2011 Jozsef Kadlecsik + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +/* The protocol version */ +#define IPSET_PROTOCOL 6 + +/* The max length of strings including NUL: set and type identifiers */ +#define IPSET_MAXNAMELEN 32 + +/* Message types and commands */ +enum ipset_cmd { + IPSET_CMD_NONE, + IPSET_CMD_PROTOCOL, /* 1: Return protocol version */ + IPSET_CMD_CREATE, /* 2: Create a new (empty) set */ + IPSET_CMD_DESTROY, /* 3: Destroy a (empty) set */ + IPSET_CMD_FLUSH, /* 4: Remove all elements from a set */ + IPSET_CMD_RENAME, /* 5: Rename a set */ + IPSET_CMD_SWAP, /* 6: Swap two sets */ + IPSET_CMD_LIST, /* 7: List sets */ + IPSET_CMD_SAVE, /* 8: Save sets */ + IPSET_CMD_ADD, /* 9: Add an element to a set */ + IPSET_CMD_DEL, /* 10: Delete an element from a set */ + IPSET_CMD_TEST, /* 11: Test an element in a set */ + IPSET_CMD_HEADER, /* 12: Get set header data only */ + IPSET_CMD_TYPE, /* 13: Get set type */ + IPSET_MSG_MAX, /* Netlink message commands */ + + /* Commands in userspace: */ + IPSET_CMD_RESTORE = IPSET_MSG_MAX, /* 14: Enter restore mode */ + IPSET_CMD_HELP, /* 15: Get help */ + IPSET_CMD_VERSION, /* 16: Get program version */ + IPSET_CMD_QUIT, /* 17: Quit from interactive mode */ + + IPSET_CMD_MAX, + + IPSET_CMD_COMMIT = IPSET_CMD_MAX, /* 18: Commit buffered commands */ +}; + +/* Attributes at command level */ +enum { + IPSET_ATTR_UNSPEC, + IPSET_ATTR_PROTOCOL, /* 1: Protocol version */ + IPSET_ATTR_SETNAME, /* 2: Name of the set */ + IPSET_ATTR_TYPENAME, /* 3: Typename */ + IPSET_ATTR_SETNAME2 = IPSET_ATTR_TYPENAME, /* Setname at rename/swap */ + IPSET_ATTR_REVISION, /* 4: Settype revision */ + IPSET_ATTR_FAMILY, /* 5: Settype family */ + IPSET_ATTR_FLAGS, /* 6: Flags at command level */ + IPSET_ATTR_DATA, /* 7: Nested attributes */ + IPSET_ATTR_ADT, /* 8: Multiple data containers */ + IPSET_ATTR_LINENO, /* 9: Restore lineno */ + IPSET_ATTR_PROTOCOL_MIN, /* 10: Minimal supported version number */ + IPSET_ATTR_REVISION_MIN = IPSET_ATTR_PROTOCOL_MIN, /* type rev min */ + __IPSET_ATTR_CMD_MAX, +}; +#define IPSET_ATTR_CMD_MAX (__IPSET_ATTR_CMD_MAX - 1) + +/* CADT specific attributes */ +enum { + IPSET_ATTR_IP = IPSET_ATTR_UNSPEC + 1, + IPSET_ATTR_IP_FROM = IPSET_ATTR_IP, + IPSET_ATTR_IP_TO, /* 2 */ + IPSET_ATTR_CIDR, /* 3 */ + IPSET_ATTR_PORT, /* 4 */ + IPSET_ATTR_PORT_FROM = IPSET_ATTR_PORT, + IPSET_ATTR_PORT_TO, /* 5 */ + IPSET_ATTR_TIMEOUT, /* 6 */ + IPSET_ATTR_PROTO, /* 7 */ + IPSET_ATTR_CADT_FLAGS, /* 8 */ + IPSET_ATTR_CADT_LINENO = IPSET_ATTR_LINENO, /* 9 */ + /* Reserve empty slots */ + IPSET_ATTR_CADT_MAX = 16, + /* Create-only specific attributes */ + IPSET_ATTR_GC, + IPSET_ATTR_HASHSIZE, + IPSET_ATTR_MAXELEM, + IPSET_ATTR_NETMASK, + IPSET_ATTR_PROBES, + IPSET_ATTR_RESIZE, + IPSET_ATTR_SIZE, + /* Kernel-only */ + IPSET_ATTR_ELEMENTS, + IPSET_ATTR_REFERENCES, + IPSET_ATTR_MEMSIZE, + + __IPSET_ATTR_CREATE_MAX, +}; +#define IPSET_ATTR_CREATE_MAX (__IPSET_ATTR_CREATE_MAX - 1) + +/* ADT specific attributes */ +enum { + IPSET_ATTR_ETHER = IPSET_ATTR_CADT_MAX + 1, + IPSET_ATTR_NAME, + IPSET_ATTR_NAMEREF, + IPSET_ATTR_IP2, + IPSET_ATTR_CIDR2, + __IPSET_ATTR_ADT_MAX, +}; +#define IPSET_ATTR_ADT_MAX (__IPSET_ATTR_ADT_MAX - 1) + +/* IP specific attributes */ +enum { + IPSET_ATTR_IPADDR_IPV4 = IPSET_ATTR_UNSPEC + 1, + IPSET_ATTR_IPADDR_IPV6, + __IPSET_ATTR_IPADDR_MAX, +}; +#define IPSET_ATTR_IPADDR_MAX (__IPSET_ATTR_IPADDR_MAX - 1) + +/* Error codes */ +enum ipset_errno { + IPSET_ERR_PRIVATE = 4096, + IPSET_ERR_PROTOCOL, + IPSET_ERR_FIND_TYPE, + IPSET_ERR_MAX_SETS, + IPSET_ERR_BUSY, + IPSET_ERR_EXIST_SETNAME2, + IPSET_ERR_TYPE_MISMATCH, + IPSET_ERR_EXIST, + IPSET_ERR_INVALID_CIDR, + IPSET_ERR_INVALID_NETMASK, + IPSET_ERR_INVALID_FAMILY, + IPSET_ERR_TIMEOUT, + IPSET_ERR_REFERENCED, + IPSET_ERR_IPADDR_IPV4, + IPSET_ERR_IPADDR_IPV6, + + /* Type specific error codes */ + IPSET_ERR_TYPE_SPECIFIC = 4352, +}; + +/* Flags at command level */ +enum ipset_cmd_flags { + IPSET_FLAG_BIT_EXIST = 0, + IPSET_FLAG_EXIST = (1 << IPSET_FLAG_BIT_EXIST), +}; + +/* Flags at CADT attribute level */ +enum ipset_cadt_flags { + IPSET_FLAG_BIT_BEFORE = 0, + IPSET_FLAG_BEFORE = (1 << IPSET_FLAG_BIT_BEFORE), +}; + +/* Commands with settype-specific attributes */ +enum ipset_adt { + IPSET_ADD, + IPSET_DEL, + IPSET_TEST, + IPSET_ADT_MAX, + IPSET_CREATE = IPSET_ADT_MAX, + IPSET_CADT_MAX, +}; + +#ifdef __KERNEL__ +#include +#include +#include +#include +#include +#include + +/* Sets are identified by an index in kernel space. Tweak with ip_set_id_t + * and IPSET_INVALID_ID if you want to increase the max number of sets. + */ +typedef u16 ip_set_id_t; + +#define IPSET_INVALID_ID 65535 + +enum ip_set_dim { + IPSET_DIM_ZERO = 0, + IPSET_DIM_ONE, + IPSET_DIM_TWO, + IPSET_DIM_THREE, + /* Max dimension in elements. + * If changed, new revision of iptables match/target is required. + */ + IPSET_DIM_MAX = 6, +}; + +/* Option flags for kernel operations */ +enum ip_set_kopt { + IPSET_INV_MATCH = (1 << IPSET_DIM_ZERO), + IPSET_DIM_ONE_SRC = (1 << IPSET_DIM_ONE), + IPSET_DIM_TWO_SRC = (1 << IPSET_DIM_TWO), + IPSET_DIM_THREE_SRC = (1 << IPSET_DIM_THREE), +}; + +/* Set features */ +enum ip_set_feature { + IPSET_TYPE_IP_FLAG = 0, + IPSET_TYPE_IP = (1 << IPSET_TYPE_IP_FLAG), + IPSET_TYPE_PORT_FLAG = 1, + IPSET_TYPE_PORT = (1 << IPSET_TYPE_PORT_FLAG), + IPSET_TYPE_MAC_FLAG = 2, + IPSET_TYPE_MAC = (1 << IPSET_TYPE_MAC_FLAG), + IPSET_TYPE_IP2_FLAG = 3, + IPSET_TYPE_IP2 = (1 << IPSET_TYPE_IP2_FLAG), + IPSET_TYPE_NAME_FLAG = 4, + IPSET_TYPE_NAME = (1 << IPSET_TYPE_NAME_FLAG), + /* Strictly speaking not a feature, but a flag for dumping: + * this settype must be dumped last */ + IPSET_DUMP_LAST_FLAG = 7, + IPSET_DUMP_LAST = (1 << IPSET_DUMP_LAST_FLAG), +}; + +struct ip_set; + +typedef int (*ipset_adtfn)(struct ip_set *set, void *value, u32 timeout); + +/* Set type, variant-specific part */ +struct ip_set_type_variant { + /* Kernelspace: test/add/del entries + * returns negative error code, + * zero for no match/success to add/delete + * positive for matching element */ + int (*kadt)(struct ip_set *set, const struct sk_buff * skb, + enum ipset_adt adt, u8 pf, u8 dim, u8 flags); + + /* Userspace: test/add/del entries + * returns negative error code, + * zero for no match/success to add/delete + * positive for matching element */ + int (*uadt)(struct ip_set *set, struct nlattr *tb[], + enum ipset_adt adt, u32 *lineno, u32 flags); + + /* Low level add/del/test functions */ + ipset_adtfn adt[IPSET_ADT_MAX]; + + /* When adding entries and set is full, try to resize the set */ + int (*resize)(struct ip_set *set, bool retried); + /* Destroy the set */ + void (*destroy)(struct ip_set *set); + /* Flush the elements */ + void (*flush)(struct ip_set *set); + /* Expire entries before listing */ + void (*expire)(struct ip_set *set); + /* List set header data */ + int (*head)(struct ip_set *set, struct sk_buff *skb); + /* List elements */ + int (*list)(const struct ip_set *set, struct sk_buff *skb, + struct netlink_callback *cb); + + /* Return true if "b" set is the same as "a" + * according to the create set parameters */ + bool (*same_set)(const struct ip_set *a, const struct ip_set *b); +}; + +/* The core set type structure */ +struct ip_set_type { + struct list_head list; + + /* Typename */ + char name[IPSET_MAXNAMELEN]; + /* Protocol version */ + u8 protocol; + /* Set features to control swapping */ + u8 features; + /* Set type dimension */ + u8 dimension; + /* Supported family: may be AF_UNSPEC for both AF_INET/AF_INET6 */ + u8 family; + /* Type revision */ + u8 revision; + + /* Create set */ + int (*create)(struct ip_set *set, struct nlattr *tb[], u32 flags); + + /* Attribute policies */ + const struct nla_policy create_policy[IPSET_ATTR_CREATE_MAX + 1]; + const struct nla_policy adt_policy[IPSET_ATTR_ADT_MAX + 1]; + + /* Set this to THIS_MODULE if you are a module, otherwise NULL */ + struct module *me; +}; + +/* register and unregister set type */ +extern int ip_set_type_register(struct ip_set_type *set_type); +extern void ip_set_type_unregister(struct ip_set_type *set_type); + +/* A generic IP set */ +struct ip_set { + /* The name of the set */ + char name[IPSET_MAXNAMELEN]; + /* Lock protecting the set data */ + rwlock_t lock; + /* References to the set */ + atomic_t ref; + /* The core set type */ + struct ip_set_type *type; + /* The type variant doing the real job */ + const struct ip_set_type_variant *variant; + /* The actual INET family of the set */ + u8 family; + /* The type specific data */ + void *data; +}; + +/* register and unregister set references */ +extern ip_set_id_t ip_set_get_byname(const char *name, struct ip_set **set); +extern void ip_set_put_byindex(ip_set_id_t index); +extern const char * ip_set_name_byindex(ip_set_id_t index); +extern ip_set_id_t ip_set_nfnl_get(const char *name); +extern ip_set_id_t ip_set_nfnl_get_byindex(ip_set_id_t index); +extern void ip_set_nfnl_put(ip_set_id_t index); + +/* API for iptables set match, and SET target */ +extern int ip_set_add(ip_set_id_t id, const struct sk_buff *skb, + u8 family, u8 dim, u8 flags); +extern int ip_set_del(ip_set_id_t id, const struct sk_buff *skb, + u8 family, u8 dim, u8 flags); +extern int ip_set_test(ip_set_id_t id, const struct sk_buff *skb, + u8 family, u8 dim, u8 flags); + +/* Utility functions */ +extern void * ip_set_alloc(size_t size); +extern void ip_set_free(void *members); +extern int ip_set_get_ipaddr4(struct nlattr *nla, __be32 *ipaddr); +extern int ip_set_get_ipaddr6(struct nlattr *nla, union nf_inet_addr *ipaddr); + +static inline int +ip_set_get_hostipaddr4(struct nlattr *nla, u32 *ipaddr) +{ + __be32 ip; + int ret = ip_set_get_ipaddr4(nla, &ip); + + if (ret) + return ret; + *ipaddr = ntohl(ip); + return 0; +} + +/* Ignore IPSET_ERR_EXIST errors if asked to do so? */ +static inline bool +ip_set_eexist(int ret, u32 flags) +{ + return ret == -IPSET_ERR_EXIST && (flags & IPSET_FLAG_EXIST); +} + +/* Check the NLA_F_NET_BYTEORDER flag */ +static inline bool +ip_set_attr_netorder(struct nlattr *tb[], int type) +{ + return tb[type] && (tb[type]->nla_type & NLA_F_NET_BYTEORDER); +} + +static inline bool +ip_set_optattr_netorder(struct nlattr *tb[], int type) +{ + return !tb[type] || (tb[type]->nla_type & NLA_F_NET_BYTEORDER); +} + +/* Useful converters */ +static inline u32 +ip_set_get_h32(const struct nlattr *attr) +{ + return ntohl(nla_get_be32(attr)); +} + +static inline u16 +ip_set_get_h16(const struct nlattr *attr) +{ + return ntohs(nla_get_be16(attr)); +} + +#define ipset_nest_start(skb, attr) nla_nest_start(skb, attr | NLA_F_NESTED) +#define ipset_nest_end(skb, start) nla_nest_end(skb, start) + +#define NLA_PUT_IPADDR4(skb, type, ipaddr) \ +do { \ + struct nlattr *__nested = ipset_nest_start(skb, type); \ + \ + if (!__nested) \ + goto nla_put_failure; \ + NLA_PUT_NET32(skb, IPSET_ATTR_IPADDR_IPV4, ipaddr); \ + ipset_nest_end(skb, __nested); \ +} while (0) + +#define NLA_PUT_IPADDR6(skb, type, ipaddrptr) \ +do { \ + struct nlattr *__nested = ipset_nest_start(skb, type); \ + \ + if (!__nested) \ + goto nla_put_failure; \ + NLA_PUT(skb, IPSET_ATTR_IPADDR_IPV6, \ + sizeof(struct in6_addr), ipaddrptr); \ + ipset_nest_end(skb, __nested); \ +} while (0) + +/* Get address from skbuff */ +static inline __be32 +ip4addr(const struct sk_buff *skb, bool src) +{ + return src ? ip_hdr(skb)->saddr : ip_hdr(skb)->daddr; +} + +static inline void +ip4addrptr(const struct sk_buff *skb, bool src, __be32 *addr) +{ + *addr = src ? ip_hdr(skb)->saddr : ip_hdr(skb)->daddr; +} + +static inline void +ip6addrptr(const struct sk_buff *skb, bool src, struct in6_addr *addr) +{ + memcpy(addr, src ? &ipv6_hdr(skb)->saddr : &ipv6_hdr(skb)->daddr, + sizeof(*addr)); +} + +/* Calculate the bytes required to store the inclusive range of a-b */ +static inline int +bitmap_bytes(u32 a, u32 b) +{ + return 4 * ((((b - a + 8) / 8) + 3) / 4); +} + +/* Interface to iptables/ip6tables */ + +#define SO_IP_SET 83 + +union ip_set_name_index { + char name[IPSET_MAXNAMELEN]; + ip_set_id_t index; +}; + +#define IP_SET_OP_GET_BYNAME 0x00000006 /* Get set index by name */ +struct ip_set_req_get_set { + unsigned op; + unsigned version; + union ip_set_name_index set; +}; + +#define IP_SET_OP_GET_BYINDEX 0x00000007 /* Get set name by index */ +/* Uses ip_set_req_get_set */ + +#define IP_SET_OP_VERSION 0x00000100 /* Ask kernel version */ +struct ip_set_req_version { + unsigned op; + unsigned version; +}; + +#endif /* __KERNEL__ */ + +#endif /*_IP_SET_H */ diff --git a/include/linux/netfilter/ipset/ip_set_getport.h b/include/linux/netfilter/ipset/ip_set_getport.h new file mode 100644 index 000000000000..694c433298b8 --- /dev/null +++ b/include/linux/netfilter/ipset/ip_set_getport.h @@ -0,0 +1,11 @@ +#ifndef _IP_SET_GETPORT_H +#define _IP_SET_GETPORT_H + +extern bool ip_set_get_ip4_port(const struct sk_buff *skb, bool src, + __be16 *port, u8 *proto); +extern bool ip_set_get_ip6_port(const struct sk_buff *skb, bool src, + __be16 *port, u8 *proto); +extern bool ip_set_get_ip_port(const struct sk_buff *skb, u8 pf, bool src, + __be16 *port); + +#endif /*_IP_SET_GETPORT_H*/ diff --git a/include/linux/netfilter/ipset/pfxlen.h b/include/linux/netfilter/ipset/pfxlen.h new file mode 100644 index 000000000000..0e1fb50da562 --- /dev/null +++ b/include/linux/netfilter/ipset/pfxlen.h @@ -0,0 +1,35 @@ +#ifndef _PFXLEN_H +#define _PFXLEN_H + +#include +#include + +/* Prefixlen maps, by Jan Engelhardt */ +extern const union nf_inet_addr ip_set_netmask_map[]; +extern const union nf_inet_addr ip_set_hostmask_map[]; + +static inline __be32 +ip_set_netmask(u8 pfxlen) +{ + return ip_set_netmask_map[pfxlen].ip; +} + +static inline const __be32 * +ip_set_netmask6(u8 pfxlen) +{ + return &ip_set_netmask_map[pfxlen].ip6[0]; +} + +static inline u32 +ip_set_hostmask(u8 pfxlen) +{ + return (__force u32) ip_set_hostmask_map[pfxlen].ip; +} + +static inline const __be32 * +ip_set_hostmask6(u8 pfxlen) +{ + return &ip_set_hostmask_map[pfxlen].ip6[0]; +} + +#endif /*_PFXLEN_H */ -- cgit v1.2.3 From 72205fc68bd13109576aa6c4c12c740962d28a6c Mon Sep 17 00:00:00 2001 From: Jozsef Kadlecsik Date: Tue, 1 Feb 2011 15:33:17 +0100 Subject: netfilter: ipset: bitmap:ip set type support The module implements the bitmap:ip set type in two flavours, without and with timeout support. In this kind of set one can store IPv4 addresses (or network addresses) from a given range. In order not to waste memory, the timeout version does not rely on the kernel timer for every element to be timed out but on garbage collection. All set types use this mechanism. Signed-off-by: Jozsef Kadlecsik Signed-off-by: Patrick McHardy --- include/linux/netfilter/ipset/ip_set_bitmap.h | 31 ++++++ include/linux/netfilter/ipset/ip_set_timeout.h | 127 +++++++++++++++++++++++++ 2 files changed, 158 insertions(+) create mode 100644 include/linux/netfilter/ipset/ip_set_bitmap.h create mode 100644 include/linux/netfilter/ipset/ip_set_timeout.h (limited to 'include/linux') diff --git a/include/linux/netfilter/ipset/ip_set_bitmap.h b/include/linux/netfilter/ipset/ip_set_bitmap.h new file mode 100644 index 000000000000..61a9e8746c83 --- /dev/null +++ b/include/linux/netfilter/ipset/ip_set_bitmap.h @@ -0,0 +1,31 @@ +#ifndef __IP_SET_BITMAP_H +#define __IP_SET_BITMAP_H + +/* Bitmap type specific error codes */ +enum { + /* The element is out of the range of the set */ + IPSET_ERR_BITMAP_RANGE = IPSET_ERR_TYPE_SPECIFIC, + /* The range exceeds the size limit of the set type */ + IPSET_ERR_BITMAP_RANGE_SIZE, +}; + +#ifdef __KERNEL__ +#define IPSET_BITMAP_MAX_RANGE 0x0000FFFF + +/* Common functions */ + +static inline u32 +range_to_mask(u32 from, u32 to, u8 *bits) +{ + u32 mask = 0xFFFFFFFE; + + *bits = 32; + while (--(*bits) > 0 && mask && (to & mask) != from) + mask <<= 1; + + return mask; +} + +#endif /* __KERNEL__ */ + +#endif /* __IP_SET_BITMAP_H */ diff --git a/include/linux/netfilter/ipset/ip_set_timeout.h b/include/linux/netfilter/ipset/ip_set_timeout.h new file mode 100644 index 000000000000..9f30c5f2ec1c --- /dev/null +++ b/include/linux/netfilter/ipset/ip_set_timeout.h @@ -0,0 +1,127 @@ +#ifndef _IP_SET_TIMEOUT_H +#define _IP_SET_TIMEOUT_H + +/* Copyright (C) 2003-2011 Jozsef Kadlecsik + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifdef __KERNEL__ + +/* How often should the gc be run by default */ +#define IPSET_GC_TIME (3 * 60) + +/* Timeout period depending on the timeout value of the given set */ +#define IPSET_GC_PERIOD(timeout) \ + ((timeout/3) ? min_t(u32, (timeout)/3, IPSET_GC_TIME) : 1) + +/* Set is defined without timeout support: timeout value may be 0 */ +#define IPSET_NO_TIMEOUT UINT_MAX + +#define with_timeout(timeout) ((timeout) != IPSET_NO_TIMEOUT) + +static inline unsigned int +ip_set_timeout_uget(struct nlattr *tb) +{ + unsigned int timeout = ip_set_get_h32(tb); + + /* Userspace supplied TIMEOUT parameter: adjust crazy size */ + return timeout == IPSET_NO_TIMEOUT ? IPSET_NO_TIMEOUT - 1 : timeout; +} + +#ifdef IP_SET_BITMAP_TIMEOUT + +/* Bitmap specific timeout constants and macros for the entries */ + +/* Bitmap entry is unset */ +#define IPSET_ELEM_UNSET 0 +/* Bitmap entry is set with no timeout value */ +#define IPSET_ELEM_PERMANENT (UINT_MAX/2) + +static inline bool +ip_set_timeout_test(unsigned long timeout) +{ + return timeout != IPSET_ELEM_UNSET && + (timeout == IPSET_ELEM_PERMANENT || + time_after(timeout, jiffies)); +} + +static inline bool +ip_set_timeout_expired(unsigned long timeout) +{ + return timeout != IPSET_ELEM_UNSET && + timeout != IPSET_ELEM_PERMANENT && + time_before(timeout, jiffies); +} + +static inline unsigned long +ip_set_timeout_set(u32 timeout) +{ + unsigned long t; + + if (!timeout) + return IPSET_ELEM_PERMANENT; + + t = timeout * HZ + jiffies; + if (t == IPSET_ELEM_UNSET || t == IPSET_ELEM_PERMANENT) + /* Bingo! */ + t++; + + return t; +} + +static inline u32 +ip_set_timeout_get(unsigned long timeout) +{ + return timeout == IPSET_ELEM_PERMANENT ? 0 : (timeout - jiffies)/HZ; +} + +#else + +/* Hash specific timeout constants and macros for the entries */ + +/* Hash entry is set with no timeout value */ +#define IPSET_ELEM_PERMANENT 0 + +static inline bool +ip_set_timeout_test(unsigned long timeout) +{ + return timeout == IPSET_ELEM_PERMANENT || + time_after(timeout, jiffies); +} + +static inline bool +ip_set_timeout_expired(unsigned long timeout) +{ + return timeout != IPSET_ELEM_PERMANENT && + time_before(timeout, jiffies); +} + +static inline unsigned long +ip_set_timeout_set(u32 timeout) +{ + unsigned long t; + + if (!timeout) + return IPSET_ELEM_PERMANENT; + + t = timeout * HZ + jiffies; + if (t == IPSET_ELEM_PERMANENT) + /* Bingo! :-) */ + t++; + + return t; +} + +static inline u32 +ip_set_timeout_get(unsigned long timeout) +{ + return timeout == IPSET_ELEM_PERMANENT ? 0 : (timeout - jiffies)/HZ; +} +#endif /* ! IP_SET_BITMAP_TIMEOUT */ + +#endif /* __KERNEL__ */ + +#endif /* _IP_SET_TIMEOUT_H */ -- cgit v1.2.3 From 6c027889696a7a694b0e2f6e3cabadefec7553b6 Mon Sep 17 00:00:00 2001 From: Jozsef Kadlecsik Date: Tue, 1 Feb 2011 15:38:36 +0100 Subject: netfilter: ipset: hash:ip set type support The module implements the hash:ip type support in four flavours: for IPv4 or IPv6, both without and with timeout support. All the hash types are based on the "array hash" or ahash structure and functions as a good compromise between minimal memory footprint and speed. The hashing uses arrays to resolve clashes. The hash table is resized (doubled) when searching becomes too long. Resizing can be triggered by userspace add commands only and those are serialized by the nfnl mutex. During resizing the set is read-locked, so the only possible concurrent operations are the kernel side readers. Those are protected by RCU locking. Because of the four flavours and the other hash types, the functions are implemented in general forms in the ip_set_ahash.h header file and the real functions are generated before compiling by macro expansion. Thus the dereferencing of low-level functions and void pointer arguments could be avoided: the low-level functions are inlined, the function arguments are pointers of type-specific structures. Signed-off-by: Jozsef Kadlecsik Signed-off-by: Patrick McHardy --- include/linux/netfilter/ipset/ip_set_ahash.h | 1074 ++++++++++++++++++++++++++ include/linux/netfilter/ipset/ip_set_hash.h | 26 + 2 files changed, 1100 insertions(+) create mode 100644 include/linux/netfilter/ipset/ip_set_ahash.h create mode 100644 include/linux/netfilter/ipset/ip_set_hash.h (limited to 'include/linux') diff --git a/include/linux/netfilter/ipset/ip_set_ahash.h b/include/linux/netfilter/ipset/ip_set_ahash.h new file mode 100644 index 000000000000..ec9d9bea1e37 --- /dev/null +++ b/include/linux/netfilter/ipset/ip_set_ahash.h @@ -0,0 +1,1074 @@ +#ifndef _IP_SET_AHASH_H +#define _IP_SET_AHASH_H + +#include +#include +#include + +/* Hashing which uses arrays to resolve clashing. The hash table is resized + * (doubled) when searching becomes too long. + * Internally jhash is used with the assumption that the size of the + * stored data is a multiple of sizeof(u32). If storage supports timeout, + * the timeout field must be the last one in the data structure - that field + * is ignored when computing the hash key. + * + * Readers and resizing + * + * Resizing can be triggered by userspace command only, and those + * are serialized by the nfnl mutex. During resizing the set is + * read-locked, so the only possible concurrent operations are + * the kernel side readers. Those must be protected by proper RCU locking. + */ + +/* Number of elements to store in an initial array block */ +#define AHASH_INIT_SIZE 4 +/* Max number of elements to store in an array block */ +#define AHASH_MAX_SIZE (3*4) + +/* A hash bucket */ +struct hbucket { + void *value; /* the array of the values */ + u8 size; /* size of the array */ + u8 pos; /* position of the first free entry */ +}; + +/* The hash table: the table size stored here in order to make resizing easy */ +struct htable { + u8 htable_bits; /* size of hash table == 2^htable_bits */ + struct hbucket bucket[0]; /* hashtable buckets */ +}; + +#define hbucket(h, i) &((h)->bucket[i]) + +/* Book-keeping of the prefixes added to the set */ +struct ip_set_hash_nets { + u8 cidr; /* the different cidr values in the set */ + u32 nets; /* number of elements per cidr */ +}; + +/* The generic ip_set hash structure */ +struct ip_set_hash { + struct htable *table; /* the hash table */ + u32 maxelem; /* max elements in the hash */ + u32 elements; /* current element (vs timeout) */ + u32 initval; /* random jhash init value */ + u32 timeout; /* timeout value, if enabled */ + struct timer_list gc; /* garbage collection when timeout enabled */ +#ifdef IP_SET_HASH_WITH_NETMASK + u8 netmask; /* netmask value for subnets to store */ +#endif +#ifdef IP_SET_HASH_WITH_NETS + struct ip_set_hash_nets nets[0]; /* book-keeping of prefixes */ +#endif +}; + +/* Compute htable_bits from the user input parameter hashsize */ +static u8 +htable_bits(u32 hashsize) +{ + /* Assume that hashsize == 2^htable_bits */ + u8 bits = fls(hashsize - 1); + if (jhash_size(bits) != hashsize) + /* Round up to the first 2^n value */ + bits = fls(hashsize); + + return bits; +} + +#ifdef IP_SET_HASH_WITH_NETS + +#define SET_HOST_MASK(family) (family == AF_INET ? 32 : 128) + +/* Network cidr size book keeping when the hash stores different + * sized networks */ +static void +add_cidr(struct ip_set_hash *h, u8 cidr, u8 host_mask) +{ + u8 i; + + ++h->nets[cidr-1].nets; + + pr_debug("add_cidr added %u: %u\n", cidr, h->nets[cidr-1].nets); + + if (h->nets[cidr-1].nets > 1) + return; + + /* New cidr size */ + for (i = 0; i < host_mask && h->nets[i].cidr; i++) { + /* Add in increasing prefix order, so larger cidr first */ + if (h->nets[i].cidr < cidr) + swap(h->nets[i].cidr, cidr); + } + if (i < host_mask) + h->nets[i].cidr = cidr; +} + +static void +del_cidr(struct ip_set_hash *h, u8 cidr, u8 host_mask) +{ + u8 i; + + --h->nets[cidr-1].nets; + + pr_debug("del_cidr deleted %u: %u\n", cidr, h->nets[cidr-1].nets); + + if (h->nets[cidr-1].nets != 0) + return; + + /* All entries with this cidr size deleted, so cleanup h->cidr[] */ + for (i = 0; i < host_mask - 1 && h->nets[i].cidr; i++) { + if (h->nets[i].cidr == cidr) + h->nets[i].cidr = cidr = h->nets[i+1].cidr; + } + h->nets[i - 1].cidr = 0; +} +#endif + +/* Destroy the hashtable part of the set */ +static void +ahash_destroy(struct htable *t) +{ + struct hbucket *n; + u32 i; + + for (i = 0; i < jhash_size(t->htable_bits); i++) { + n = hbucket(t, i); + if (n->size) + /* FIXME: use slab cache */ + kfree(n->value); + } + + ip_set_free(t); +} + +/* Calculate the actual memory size of the set data */ +static size_t +ahash_memsize(const struct ip_set_hash *h, size_t dsize, u8 host_mask) +{ + u32 i; + struct htable *t = h->table; + size_t memsize = sizeof(*h) + + sizeof(*t) +#ifdef IP_SET_HASH_WITH_NETS + + sizeof(struct ip_set_hash_nets) * host_mask +#endif + + jhash_size(t->htable_bits) * sizeof(struct hbucket); + + for (i = 0; i < jhash_size(t->htable_bits); i++) + memsize += t->bucket[i].size * dsize; + + return memsize; +} + +/* Flush a hash type of set: destroy all elements */ +static void +ip_set_hash_flush(struct ip_set *set) +{ + struct ip_set_hash *h = set->data; + struct htable *t = h->table; + struct hbucket *n; + u32 i; + + for (i = 0; i < jhash_size(t->htable_bits); i++) { + n = hbucket(t, i); + if (n->size) { + n->size = n->pos = 0; + /* FIXME: use slab cache */ + kfree(n->value); + } + } +#ifdef IP_SET_HASH_WITH_NETS + memset(h->nets, 0, sizeof(struct ip_set_hash_nets) + * SET_HOST_MASK(set->family)); +#endif + h->elements = 0; +} + +/* Destroy a hash type of set */ +static void +ip_set_hash_destroy(struct ip_set *set) +{ + struct ip_set_hash *h = set->data; + + if (with_timeout(h->timeout)) + del_timer_sync(&h->gc); + + ahash_destroy(h->table); + kfree(h); + + set->data = NULL; +} + +#define HKEY(data, initval, htable_bits) \ +(jhash2((u32 *)(data), sizeof(struct type_pf_elem)/sizeof(u32), initval) \ + & jhash_mask(htable_bits)) + +#endif /* _IP_SET_AHASH_H */ + +#define CONCAT(a, b, c) a##b##c +#define TOKEN(a, b, c) CONCAT(a, b, c) + +/* Type/family dependent function prototypes */ + +#define type_pf_data_equal TOKEN(TYPE, PF, _data_equal) +#define type_pf_data_isnull TOKEN(TYPE, PF, _data_isnull) +#define type_pf_data_copy TOKEN(TYPE, PF, _data_copy) +#define type_pf_data_zero_out TOKEN(TYPE, PF, _data_zero_out) +#define type_pf_data_netmask TOKEN(TYPE, PF, _data_netmask) +#define type_pf_data_list TOKEN(TYPE, PF, _data_list) +#define type_pf_data_tlist TOKEN(TYPE, PF, _data_tlist) + +#define type_pf_elem TOKEN(TYPE, PF, _elem) +#define type_pf_telem TOKEN(TYPE, PF, _telem) +#define type_pf_data_timeout TOKEN(TYPE, PF, _data_timeout) +#define type_pf_data_expired TOKEN(TYPE, PF, _data_expired) +#define type_pf_data_timeout_set TOKEN(TYPE, PF, _data_timeout_set) + +#define type_pf_elem_add TOKEN(TYPE, PF, _elem_add) +#define type_pf_add TOKEN(TYPE, PF, _add) +#define type_pf_del TOKEN(TYPE, PF, _del) +#define type_pf_test_cidrs TOKEN(TYPE, PF, _test_cidrs) +#define type_pf_test TOKEN(TYPE, PF, _test) + +#define type_pf_elem_tadd TOKEN(TYPE, PF, _elem_tadd) +#define type_pf_del_telem TOKEN(TYPE, PF, _ahash_del_telem) +#define type_pf_expire TOKEN(TYPE, PF, _expire) +#define type_pf_tadd TOKEN(TYPE, PF, _tadd) +#define type_pf_tdel TOKEN(TYPE, PF, _tdel) +#define type_pf_ttest_cidrs TOKEN(TYPE, PF, _ahash_ttest_cidrs) +#define type_pf_ttest TOKEN(TYPE, PF, _ahash_ttest) + +#define type_pf_resize TOKEN(TYPE, PF, _resize) +#define type_pf_tresize TOKEN(TYPE, PF, _tresize) +#define type_pf_flush ip_set_hash_flush +#define type_pf_destroy ip_set_hash_destroy +#define type_pf_head TOKEN(TYPE, PF, _head) +#define type_pf_list TOKEN(TYPE, PF, _list) +#define type_pf_tlist TOKEN(TYPE, PF, _tlist) +#define type_pf_same_set TOKEN(TYPE, PF, _same_set) +#define type_pf_kadt TOKEN(TYPE, PF, _kadt) +#define type_pf_uadt TOKEN(TYPE, PF, _uadt) +#define type_pf_gc TOKEN(TYPE, PF, _gc) +#define type_pf_gc_init TOKEN(TYPE, PF, _gc_init) +#define type_pf_variant TOKEN(TYPE, PF, _variant) +#define type_pf_tvariant TOKEN(TYPE, PF, _tvariant) + +/* Flavour without timeout */ + +/* Get the ith element from the array block n */ +#define ahash_data(n, i) \ + ((struct type_pf_elem *)((n)->value) + (i)) + +/* Add an element to the hash table when resizing the set: + * we spare the maintenance of the internal counters. */ +static int +type_pf_elem_add(struct hbucket *n, const struct type_pf_elem *value) +{ + if (n->pos >= n->size) { + void *tmp; + + if (n->size >= AHASH_MAX_SIZE) + /* Trigger rehashing */ + return -EAGAIN; + + tmp = kzalloc((n->size + AHASH_INIT_SIZE) + * sizeof(struct type_pf_elem), + GFP_ATOMIC); + if (!tmp) + return -ENOMEM; + if (n->size) { + memcpy(tmp, n->value, + sizeof(struct type_pf_elem) * n->size); + kfree(n->value); + } + n->value = tmp; + n->size += AHASH_INIT_SIZE; + } + type_pf_data_copy(ahash_data(n, n->pos++), value); + return 0; +} + +/* Resize a hash: create a new hash table with doubling the hashsize + * and inserting the elements to it. Repeat until we succeed or + * fail due to memory pressures. */ +static int +type_pf_resize(struct ip_set *set, bool retried) +{ + struct ip_set_hash *h = set->data; + struct htable *t, *orig = h->table; + u8 htable_bits = orig->htable_bits; + const struct type_pf_elem *data; + struct hbucket *n, *m; + u32 i, j; + int ret; + +retry: + ret = 0; + htable_bits++; + pr_debug("attempt to resize set %s from %u to %u, t %p\n", + set->name, orig->htable_bits, htable_bits, orig); + if (!htable_bits) + /* In case we have plenty of memory :-) */ + return -IPSET_ERR_HASH_FULL; + t = ip_set_alloc(sizeof(*t) + + jhash_size(htable_bits) * sizeof(struct hbucket)); + if (!t) + return -ENOMEM; + t->htable_bits = htable_bits; + + read_lock_bh(&set->lock); + for (i = 0; i < jhash_size(orig->htable_bits); i++) { + n = hbucket(orig, i); + for (j = 0; j < n->pos; j++) { + data = ahash_data(n, j); + m = hbucket(t, HKEY(data, h->initval, htable_bits)); + ret = type_pf_elem_add(m, data); + if (ret < 0) { + read_unlock_bh(&set->lock); + ahash_destroy(t); + if (ret == -EAGAIN) + goto retry; + return ret; + } + } + } + + rcu_assign_pointer(h->table, t); + read_unlock_bh(&set->lock); + + /* Give time to other readers of the set */ + synchronize_rcu_bh(); + + pr_debug("set %s resized from %u (%p) to %u (%p)\n", set->name, + orig->htable_bits, orig, t->htable_bits, t); + ahash_destroy(orig); + + return 0; +} + +/* Add an element to a hash and update the internal counters when succeeded, + * otherwise report the proper error code. */ +static int +type_pf_add(struct ip_set *set, void *value, u32 timeout) +{ + struct ip_set_hash *h = set->data; + struct htable *t; + const struct type_pf_elem *d = value; + struct hbucket *n; + int i, ret = 0; + u32 key; + + if (h->elements >= h->maxelem) + return -IPSET_ERR_HASH_FULL; + + rcu_read_lock_bh(); + t = rcu_dereference_bh(h->table); + key = HKEY(value, h->initval, t->htable_bits); + n = hbucket(t, key); + for (i = 0; i < n->pos; i++) + if (type_pf_data_equal(ahash_data(n, i), d)) { + ret = -IPSET_ERR_EXIST; + goto out; + } + + ret = type_pf_elem_add(n, value); + if (ret != 0) + goto out; + +#ifdef IP_SET_HASH_WITH_NETS + add_cidr(h, d->cidr, HOST_MASK); +#endif + h->elements++; +out: + rcu_read_unlock_bh(); + return ret; +} + +/* Delete an element from the hash: swap it with the last element + * and free up space if possible. + */ +static int +type_pf_del(struct ip_set *set, void *value, u32 timeout) +{ + struct ip_set_hash *h = set->data; + struct htable *t = h->table; + const struct type_pf_elem *d = value; + struct hbucket *n; + int i; + struct type_pf_elem *data; + u32 key; + + key = HKEY(value, h->initval, t->htable_bits); + n = hbucket(t, key); + for (i = 0; i < n->pos; i++) { + data = ahash_data(n, i); + if (!type_pf_data_equal(data, d)) + continue; + if (i != n->pos - 1) + /* Not last one */ + type_pf_data_copy(data, ahash_data(n, n->pos - 1)); + + n->pos--; + h->elements--; +#ifdef IP_SET_HASH_WITH_NETS + del_cidr(h, d->cidr, HOST_MASK); +#endif + if (n->pos + AHASH_INIT_SIZE < n->size) { + void *tmp = kzalloc((n->size - AHASH_INIT_SIZE) + * sizeof(struct type_pf_elem), + GFP_ATOMIC); + if (!tmp) + return 0; + n->size -= AHASH_INIT_SIZE; + memcpy(tmp, n->value, + n->size * sizeof(struct type_pf_elem)); + kfree(n->value); + n->value = tmp; + } + return 0; + } + + return -IPSET_ERR_EXIST; +} + +#ifdef IP_SET_HASH_WITH_NETS + +/* Special test function which takes into account the different network + * sizes added to the set */ +static int +type_pf_test_cidrs(struct ip_set *set, struct type_pf_elem *d, u32 timeout) +{ + struct ip_set_hash *h = set->data; + struct htable *t = h->table; + struct hbucket *n; + const struct type_pf_elem *data; + int i, j = 0; + u32 key; + u8 host_mask = SET_HOST_MASK(set->family); + + pr_debug("test by nets\n"); + for (; j < host_mask && h->nets[j].cidr; j++) { + type_pf_data_netmask(d, h->nets[j].cidr); + key = HKEY(d, h->initval, t->htable_bits); + n = hbucket(t, key); + for (i = 0; i < n->pos; i++) { + data = ahash_data(n, i); + if (type_pf_data_equal(data, d)) + return 1; + } + } + return 0; +} +#endif + +/* Test whether the element is added to the set */ +static int +type_pf_test(struct ip_set *set, void *value, u32 timeout) +{ + struct ip_set_hash *h = set->data; + struct htable *t = h->table; + struct type_pf_elem *d = value; + struct hbucket *n; + const struct type_pf_elem *data; + int i; + u32 key; + +#ifdef IP_SET_HASH_WITH_NETS + /* If we test an IP address and not a network address, + * try all possible network sizes */ + if (d->cidr == SET_HOST_MASK(set->family)) + return type_pf_test_cidrs(set, d, timeout); +#endif + + key = HKEY(d, h->initval, t->htable_bits); + n = hbucket(t, key); + for (i = 0; i < n->pos; i++) { + data = ahash_data(n, i); + if (type_pf_data_equal(data, d)) + return 1; + } + return 0; +} + +/* Reply a HEADER request: fill out the header part of the set */ +static int +type_pf_head(struct ip_set *set, struct sk_buff *skb) +{ + const struct ip_set_hash *h = set->data; + struct nlattr *nested; + size_t memsize; + + read_lock_bh(&set->lock); + memsize = ahash_memsize(h, with_timeout(h->timeout) + ? sizeof(struct type_pf_telem) + : sizeof(struct type_pf_elem), + set->family == AF_INET ? 32 : 128); + read_unlock_bh(&set->lock); + + nested = ipset_nest_start(skb, IPSET_ATTR_DATA); + if (!nested) + goto nla_put_failure; + NLA_PUT_NET32(skb, IPSET_ATTR_HASHSIZE, + htonl(jhash_size(h->table->htable_bits))); + NLA_PUT_NET32(skb, IPSET_ATTR_MAXELEM, htonl(h->maxelem)); +#ifdef IP_SET_HASH_WITH_NETMASK + if (h->netmask != HOST_MASK) + NLA_PUT_U8(skb, IPSET_ATTR_NETMASK, h->netmask); +#endif + NLA_PUT_NET32(skb, IPSET_ATTR_REFERENCES, + htonl(atomic_read(&set->ref) - 1)); + NLA_PUT_NET32(skb, IPSET_ATTR_MEMSIZE, htonl(memsize)); + if (with_timeout(h->timeout)) + NLA_PUT_NET32(skb, IPSET_ATTR_TIMEOUT, htonl(h->timeout)); + ipset_nest_end(skb, nested); + + return 0; +nla_put_failure: + return -EMSGSIZE; +} + +/* Reply a LIST/SAVE request: dump the elements of the specified set */ +static int +type_pf_list(const struct ip_set *set, + struct sk_buff *skb, struct netlink_callback *cb) +{ + const struct ip_set_hash *h = set->data; + const struct htable *t = h->table; + struct nlattr *atd, *nested; + const struct hbucket *n; + const struct type_pf_elem *data; + u32 first = cb->args[2]; + /* We assume that one hash bucket fills into one page */ + void *incomplete; + int i; + + atd = ipset_nest_start(skb, IPSET_ATTR_ADT); + if (!atd) + return -EMSGSIZE; + pr_debug("list hash set %s\n", set->name); + for (; cb->args[2] < jhash_size(t->htable_bits); cb->args[2]++) { + incomplete = skb_tail_pointer(skb); + n = hbucket(t, cb->args[2]); + pr_debug("cb->args[2]: %lu, t %p n %p\n", cb->args[2], t, n); + for (i = 0; i < n->pos; i++) { + data = ahash_data(n, i); + pr_debug("list hash %lu hbucket %p i %u, data %p\n", + cb->args[2], n, i, data); + nested = ipset_nest_start(skb, IPSET_ATTR_DATA); + if (!nested) { + if (cb->args[2] == first) { + nla_nest_cancel(skb, atd); + return -EMSGSIZE; + } else + goto nla_put_failure; + } + if (type_pf_data_list(skb, data)) + goto nla_put_failure; + ipset_nest_end(skb, nested); + } + } + ipset_nest_end(skb, atd); + /* Set listing finished */ + cb->args[2] = 0; + + return 0; + +nla_put_failure: + nlmsg_trim(skb, incomplete); + ipset_nest_end(skb, atd); + if (unlikely(first == cb->args[2])) { + pr_warning("Can't list set %s: one bucket does not fit into " + "a message. Please report it!\n", set->name); + cb->args[2] = 0; + return -EMSGSIZE; + } + return 0; +} + +static int +type_pf_kadt(struct ip_set *set, const struct sk_buff * skb, + enum ipset_adt adt, u8 pf, u8 dim, u8 flags); +static int +type_pf_uadt(struct ip_set *set, struct nlattr *tb[], + enum ipset_adt adt, u32 *lineno, u32 flags); + +static const struct ip_set_type_variant type_pf_variant = { + .kadt = type_pf_kadt, + .uadt = type_pf_uadt, + .adt = { + [IPSET_ADD] = type_pf_add, + [IPSET_DEL] = type_pf_del, + [IPSET_TEST] = type_pf_test, + }, + .destroy = type_pf_destroy, + .flush = type_pf_flush, + .head = type_pf_head, + .list = type_pf_list, + .resize = type_pf_resize, + .same_set = type_pf_same_set, +}; + +/* Flavour with timeout support */ + +#define ahash_tdata(n, i) \ + (struct type_pf_elem *)((struct type_pf_telem *)((n)->value) + (i)) + +static inline u32 +type_pf_data_timeout(const struct type_pf_elem *data) +{ + const struct type_pf_telem *tdata = + (const struct type_pf_telem *) data; + + return tdata->timeout; +} + +static inline bool +type_pf_data_expired(const struct type_pf_elem *data) +{ + const struct type_pf_telem *tdata = + (const struct type_pf_telem *) data; + + return ip_set_timeout_expired(tdata->timeout); +} + +static inline void +type_pf_data_timeout_set(struct type_pf_elem *data, u32 timeout) +{ + struct type_pf_telem *tdata = (struct type_pf_telem *) data; + + tdata->timeout = ip_set_timeout_set(timeout); +} + +static int +type_pf_elem_tadd(struct hbucket *n, const struct type_pf_elem *value, + u32 timeout) +{ + struct type_pf_elem *data; + + if (n->pos >= n->size) { + void *tmp; + + if (n->size >= AHASH_MAX_SIZE) + /* Trigger rehashing */ + return -EAGAIN; + + tmp = kzalloc((n->size + AHASH_INIT_SIZE) + * sizeof(struct type_pf_telem), + GFP_ATOMIC); + if (!tmp) + return -ENOMEM; + if (n->size) { + memcpy(tmp, n->value, + sizeof(struct type_pf_telem) * n->size); + kfree(n->value); + } + n->value = tmp; + n->size += AHASH_INIT_SIZE; + } + data = ahash_tdata(n, n->pos++); + type_pf_data_copy(data, value); + type_pf_data_timeout_set(data, timeout); + return 0; +} + +/* Delete expired elements from the hashtable */ +static void +type_pf_expire(struct ip_set_hash *h) +{ + struct htable *t = h->table; + struct hbucket *n; + struct type_pf_elem *data; + u32 i; + int j; + + for (i = 0; i < jhash_size(t->htable_bits); i++) { + n = hbucket(t, i); + for (j = 0; j < n->pos; j++) { + data = ahash_tdata(n, j); + if (type_pf_data_expired(data)) { + pr_debug("expired %u/%u\n", i, j); +#ifdef IP_SET_HASH_WITH_NETS + del_cidr(h, data->cidr, HOST_MASK); +#endif + if (j != n->pos - 1) + /* Not last one */ + type_pf_data_copy(data, + ahash_tdata(n, n->pos - 1)); + n->pos--; + h->elements--; + } + } + if (n->pos + AHASH_INIT_SIZE < n->size) { + void *tmp = kzalloc((n->size - AHASH_INIT_SIZE) + * sizeof(struct type_pf_telem), + GFP_ATOMIC); + if (!tmp) + /* Still try to delete expired elements */ + continue; + n->size -= AHASH_INIT_SIZE; + memcpy(tmp, n->value, + n->size * sizeof(struct type_pf_telem)); + kfree(n->value); + n->value = tmp; + } + } +} + +static int +type_pf_tresize(struct ip_set *set, bool retried) +{ + struct ip_set_hash *h = set->data; + struct htable *t, *orig = h->table; + u8 htable_bits = orig->htable_bits; + const struct type_pf_elem *data; + struct hbucket *n, *m; + u32 i, j; + int ret; + + /* Try to cleanup once */ + if (!retried) { + i = h->elements; + write_lock_bh(&set->lock); + type_pf_expire(set->data); + write_unlock_bh(&set->lock); + if (h->elements < i) + return 0; + } + +retry: + ret = 0; + htable_bits++; + if (!htable_bits) + /* In case we have plenty of memory :-) */ + return -IPSET_ERR_HASH_FULL; + t = ip_set_alloc(sizeof(*t) + + jhash_size(htable_bits) * sizeof(struct hbucket)); + if (!t) + return -ENOMEM; + t->htable_bits = htable_bits; + + read_lock_bh(&set->lock); + for (i = 0; i < jhash_size(orig->htable_bits); i++) { + n = hbucket(orig, i); + for (j = 0; j < n->pos; j++) { + data = ahash_tdata(n, j); + m = hbucket(t, HKEY(data, h->initval, htable_bits)); + ret = type_pf_elem_tadd(m, data, + type_pf_data_timeout(data)); + if (ret < 0) { + read_unlock_bh(&set->lock); + ahash_destroy(t); + if (ret == -EAGAIN) + goto retry; + return ret; + } + } + } + + rcu_assign_pointer(h->table, t); + read_unlock_bh(&set->lock); + + /* Give time to other readers of the set */ + synchronize_rcu_bh(); + + ahash_destroy(orig); + + return 0; +} + +static int +type_pf_tadd(struct ip_set *set, void *value, u32 timeout) +{ + struct ip_set_hash *h = set->data; + struct htable *t = h->table; + const struct type_pf_elem *d = value; + struct hbucket *n; + struct type_pf_elem *data; + int ret = 0, i, j = AHASH_MAX_SIZE + 1; + u32 key; + + if (h->elements >= h->maxelem) + /* FIXME: when set is full, we slow down here */ + type_pf_expire(h); + if (h->elements >= h->maxelem) + return -IPSET_ERR_HASH_FULL; + + rcu_read_lock_bh(); + t = rcu_dereference_bh(h->table); + key = HKEY(d, h->initval, t->htable_bits); + n = hbucket(t, key); + for (i = 0; i < n->pos; i++) { + data = ahash_tdata(n, i); + if (type_pf_data_equal(data, d)) { + if (type_pf_data_expired(data)) + j = i; + else { + ret = -IPSET_ERR_EXIST; + goto out; + } + } else if (j == AHASH_MAX_SIZE + 1 && + type_pf_data_expired(data)) + j = i; + } + if (j != AHASH_MAX_SIZE + 1) { + data = ahash_tdata(n, j); +#ifdef IP_SET_HASH_WITH_NETS + del_cidr(h, data->cidr, HOST_MASK); + add_cidr(h, d->cidr, HOST_MASK); +#endif + type_pf_data_copy(data, d); + type_pf_data_timeout_set(data, timeout); + goto out; + } + ret = type_pf_elem_tadd(n, d, timeout); + if (ret != 0) + goto out; + +#ifdef IP_SET_HASH_WITH_NETS + add_cidr(h, d->cidr, HOST_MASK); +#endif + h->elements++; +out: + rcu_read_unlock_bh(); + return ret; +} + +static int +type_pf_tdel(struct ip_set *set, void *value, u32 timeout) +{ + struct ip_set_hash *h = set->data; + struct htable *t = h->table; + const struct type_pf_elem *d = value; + struct hbucket *n; + int i, ret = 0; + struct type_pf_elem *data; + u32 key; + + key = HKEY(value, h->initval, t->htable_bits); + n = hbucket(t, key); + for (i = 0; i < n->pos; i++) { + data = ahash_tdata(n, i); + if (!type_pf_data_equal(data, d)) + continue; + if (type_pf_data_expired(data)) + ret = -IPSET_ERR_EXIST; + if (i != n->pos - 1) + /* Not last one */ + type_pf_data_copy(data, ahash_tdata(n, n->pos - 1)); + + n->pos--; + h->elements--; +#ifdef IP_SET_HASH_WITH_NETS + del_cidr(h, d->cidr, HOST_MASK); +#endif + if (n->pos + AHASH_INIT_SIZE < n->size) { + void *tmp = kzalloc((n->size - AHASH_INIT_SIZE) + * sizeof(struct type_pf_telem), + GFP_ATOMIC); + if (!tmp) + return 0; + n->size -= AHASH_INIT_SIZE; + memcpy(tmp, n->value, + n->size * sizeof(struct type_pf_telem)); + kfree(n->value); + n->value = tmp; + } + return 0; + } + + return -IPSET_ERR_EXIST; +} + +#ifdef IP_SET_HASH_WITH_NETS +static int +type_pf_ttest_cidrs(struct ip_set *set, struct type_pf_elem *d, u32 timeout) +{ + struct ip_set_hash *h = set->data; + struct htable *t = h->table; + struct type_pf_elem *data; + struct hbucket *n; + int i, j = 0; + u32 key; + u8 host_mask = SET_HOST_MASK(set->family); + + for (; j < host_mask && h->nets[j].cidr; j++) { + type_pf_data_netmask(d, h->nets[j].cidr); + key = HKEY(d, h->initval, t->htable_bits); + n = hbucket(t, key); + for (i = 0; i < n->pos; i++) { + data = ahash_tdata(n, i); + if (type_pf_data_equal(data, d)) + return !type_pf_data_expired(data); + } + } + return 0; +} +#endif + +static int +type_pf_ttest(struct ip_set *set, void *value, u32 timeout) +{ + struct ip_set_hash *h = set->data; + struct htable *t = h->table; + struct type_pf_elem *data, *d = value; + struct hbucket *n; + int i; + u32 key; + +#ifdef IP_SET_HASH_WITH_NETS + if (d->cidr == SET_HOST_MASK(set->family)) + return type_pf_ttest_cidrs(set, d, timeout); +#endif + key = HKEY(d, h->initval, t->htable_bits); + n = hbucket(t, key); + for (i = 0; i < n->pos; i++) { + data = ahash_tdata(n, i); + if (type_pf_data_equal(data, d)) + return !type_pf_data_expired(data); + } + return 0; +} + +static int +type_pf_tlist(const struct ip_set *set, + struct sk_buff *skb, struct netlink_callback *cb) +{ + const struct ip_set_hash *h = set->data; + const struct htable *t = h->table; + struct nlattr *atd, *nested; + const struct hbucket *n; + const struct type_pf_elem *data; + u32 first = cb->args[2]; + /* We assume that one hash bucket fills into one page */ + void *incomplete; + int i; + + atd = ipset_nest_start(skb, IPSET_ATTR_ADT); + if (!atd) + return -EMSGSIZE; + for (; cb->args[2] < jhash_size(t->htable_bits); cb->args[2]++) { + incomplete = skb_tail_pointer(skb); + n = hbucket(t, cb->args[2]); + for (i = 0; i < n->pos; i++) { + data = ahash_tdata(n, i); + pr_debug("list %p %u\n", n, i); + if (type_pf_data_expired(data)) + continue; + pr_debug("do list %p %u\n", n, i); + nested = ipset_nest_start(skb, IPSET_ATTR_DATA); + if (!nested) { + if (cb->args[2] == first) { + nla_nest_cancel(skb, atd); + return -EMSGSIZE; + } else + goto nla_put_failure; + } + if (type_pf_data_tlist(skb, data)) + goto nla_put_failure; + ipset_nest_end(skb, nested); + } + } + ipset_nest_end(skb, atd); + /* Set listing finished */ + cb->args[2] = 0; + + return 0; + +nla_put_failure: + nlmsg_trim(skb, incomplete); + ipset_nest_end(skb, atd); + if (unlikely(first == cb->args[2])) { + pr_warning("Can't list set %s: one bucket does not fit into " + "a message. Please report it!\n", set->name); + cb->args[2] = 0; + return -EMSGSIZE; + } + return 0; +} + +static const struct ip_set_type_variant type_pf_tvariant = { + .kadt = type_pf_kadt, + .uadt = type_pf_uadt, + .adt = { + [IPSET_ADD] = type_pf_tadd, + [IPSET_DEL] = type_pf_tdel, + [IPSET_TEST] = type_pf_ttest, + }, + .destroy = type_pf_destroy, + .flush = type_pf_flush, + .head = type_pf_head, + .list = type_pf_tlist, + .resize = type_pf_tresize, + .same_set = type_pf_same_set, +}; + +static void +type_pf_gc(unsigned long ul_set) +{ + struct ip_set *set = (struct ip_set *) ul_set; + struct ip_set_hash *h = set->data; + + pr_debug("called\n"); + write_lock_bh(&set->lock); + type_pf_expire(h); + write_unlock_bh(&set->lock); + + h->gc.expires = jiffies + IPSET_GC_PERIOD(h->timeout) * HZ; + add_timer(&h->gc); +} + +static void +type_pf_gc_init(struct ip_set *set) +{ + struct ip_set_hash *h = set->data; + + init_timer(&h->gc); + h->gc.data = (unsigned long) set; + h->gc.function = type_pf_gc; + h->gc.expires = jiffies + IPSET_GC_PERIOD(h->timeout) * HZ; + add_timer(&h->gc); + pr_debug("gc initialized, run in every %u\n", + IPSET_GC_PERIOD(h->timeout)); +} + +#undef type_pf_data_equal +#undef type_pf_data_isnull +#undef type_pf_data_copy +#undef type_pf_data_zero_out +#undef type_pf_data_list +#undef type_pf_data_tlist + +#undef type_pf_elem +#undef type_pf_telem +#undef type_pf_data_timeout +#undef type_pf_data_expired +#undef type_pf_data_netmask +#undef type_pf_data_timeout_set + +#undef type_pf_elem_add +#undef type_pf_add +#undef type_pf_del +#undef type_pf_test_cidrs +#undef type_pf_test + +#undef type_pf_elem_tadd +#undef type_pf_expire +#undef type_pf_tadd +#undef type_pf_tdel +#undef type_pf_ttest_cidrs +#undef type_pf_ttest + +#undef type_pf_resize +#undef type_pf_tresize +#undef type_pf_flush +#undef type_pf_destroy +#undef type_pf_head +#undef type_pf_list +#undef type_pf_tlist +#undef type_pf_same_set +#undef type_pf_kadt +#undef type_pf_uadt +#undef type_pf_gc +#undef type_pf_gc_init +#undef type_pf_variant +#undef type_pf_tvariant diff --git a/include/linux/netfilter/ipset/ip_set_hash.h b/include/linux/netfilter/ipset/ip_set_hash.h new file mode 100644 index 000000000000..b86f15c04524 --- /dev/null +++ b/include/linux/netfilter/ipset/ip_set_hash.h @@ -0,0 +1,26 @@ +#ifndef __IP_SET_HASH_H +#define __IP_SET_HASH_H + +/* Hash type specific error codes */ +enum { + /* Hash is full */ + IPSET_ERR_HASH_FULL = IPSET_ERR_TYPE_SPECIFIC, + /* Null-valued element */ + IPSET_ERR_HASH_ELEM, + /* Invalid protocol */ + IPSET_ERR_INVALID_PROTO, + /* Protocol missing but must be specified */ + IPSET_ERR_MISSING_PROTO, +}; + +#ifdef __KERNEL__ + +#define IPSET_DEFAULT_HASHSIZE 1024 +#define IPSET_MIMINAL_HASHSIZE 64 +#define IPSET_DEFAULT_MAXELEM 65536 +#define IPSET_DEFAULT_PROBES 4 +#define IPSET_DEFAULT_RESIZE 100 + +#endif /* __KERNEL__ */ + +#endif /* __IP_SET_HASH_H */ -- cgit v1.2.3 From f830837f0eed0f9e371b8fd65169365780814bb1 Mon Sep 17 00:00:00 2001 From: Jozsef Kadlecsik Date: Tue, 1 Feb 2011 15:54:59 +0100 Subject: netfilter: ipset: list:set set type support The module implements the list:set type support in two flavours: without and with timeout. The sets has two sides: for the userspace, they store the names of other (non list:set type of) sets: one can add, delete and test set names. For the kernel, it forms an ordered union of the member sets: the members sets are tried in order when elements are added, deleted and tested and the process stops at the first success. Signed-off-by: Jozsef Kadlecsik Signed-off-by: Patrick McHardy --- include/linux/netfilter/ipset/ip_set_list.h | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 include/linux/netfilter/ipset/ip_set_list.h (limited to 'include/linux') diff --git a/include/linux/netfilter/ipset/ip_set_list.h b/include/linux/netfilter/ipset/ip_set_list.h new file mode 100644 index 000000000000..40a63f302613 --- /dev/null +++ b/include/linux/netfilter/ipset/ip_set_list.h @@ -0,0 +1,27 @@ +#ifndef __IP_SET_LIST_H +#define __IP_SET_LIST_H + +/* List type specific error codes */ +enum { + /* Set name to be added/deleted/tested does not exist. */ + IPSET_ERR_NAME = IPSET_ERR_TYPE_SPECIFIC, + /* list:set type is not permitted to add */ + IPSET_ERR_LOOP, + /* Missing reference set */ + IPSET_ERR_BEFORE, + /* Reference set does not exist */ + IPSET_ERR_NAMEREF, + /* Set is full */ + IPSET_ERR_LIST_FULL, + /* Reference set is not added to the set */ + IPSET_ERR_REF_EXIST, +}; + +#ifdef __KERNEL__ + +#define IP_SET_LIST_DEFAULT_SIZE 8 +#define IP_SET_LIST_MIN_SIZE 4 + +#endif /* __KERNEL__ */ + +#endif /* __IP_SET_LIST_H */ -- cgit v1.2.3 From d956798d82d2d331c031301965d69e17a1a48a2b Mon Sep 17 00:00:00 2001 From: Jozsef Kadlecsik Date: Tue, 1 Feb 2011 15:56:00 +0100 Subject: netfilter: xtables: "set" match and "SET" target support The patch adds the combined module of the "SET" target and "set" match to netfilter. Both the previous and the current revisions are supported. Signed-off-by: Jozsef Kadlecsik Signed-off-by: Patrick McHardy --- include/linux/netfilter/xt_set.h | 55 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 55 insertions(+) create mode 100644 include/linux/netfilter/xt_set.h (limited to 'include/linux') diff --git a/include/linux/netfilter/xt_set.h b/include/linux/netfilter/xt_set.h new file mode 100644 index 000000000000..69b2bd1fb818 --- /dev/null +++ b/include/linux/netfilter/xt_set.h @@ -0,0 +1,55 @@ +#ifndef _XT_SET_H +#define _XT_SET_H + +#include + +/* Revision 0 interface: backward compatible with netfilter/iptables */ + +/* + * Option flags for kernel operations (xt_set_info_v0) + */ +#define IPSET_SRC 0x01 /* Source match/add */ +#define IPSET_DST 0x02 /* Destination match/add */ +#define IPSET_MATCH_INV 0x04 /* Inverse matching */ + +struct xt_set_info_v0 { + ip_set_id_t index; + union { + __u32 flags[IPSET_DIM_MAX + 1]; + struct { + __u32 __flags[IPSET_DIM_MAX]; + __u8 dim; + __u8 flags; + } compat; + } u; +}; + +/* match and target infos */ +struct xt_set_info_match_v0 { + struct xt_set_info_v0 match_set; +}; + +struct xt_set_info_target_v0 { + struct xt_set_info_v0 add_set; + struct xt_set_info_v0 del_set; +}; + +/* Revision 1: current interface to netfilter/iptables */ + +struct xt_set_info { + ip_set_id_t index; + __u8 dim; + __u8 flags; +}; + +/* match and target infos */ +struct xt_set_info_match { + struct xt_set_info match_set; +}; + +struct xt_set_info_target { + struct xt_set_info add_set; + struct xt_set_info del_set; +}; + +#endif /*_XT_SET_H*/ -- cgit v1.2.3 From 2a7dba391e5628ad665ce84ef9a6648da541ebab Mon Sep 17 00:00:00 2001 From: Eric Paris Date: Tue, 1 Feb 2011 11:05:39 -0500 Subject: fs/vfs/security: pass last path component to LSM on inode creation SELinux would like to implement a new labeling behavior of newly created inodes. We currently label new inodes based on the parent and the creating process. This new behavior would also take into account the name of the new object when deciding the new label. This is not the (supposed) full path, just the last component of the path. This is very useful because creating /etc/shadow is different than creating /etc/passwd but the kernel hooks are unable to differentiate these operations. We currently require that userspace realize it is doing some difficult operation like that and than userspace jumps through SELinux hoops to get things set up correctly. This patch does not implement new behavior, that is obviously contained in a seperate SELinux patch, but it does pass the needed name down to the correct LSM hook. If no such name exists it is fine to pass NULL. Signed-off-by: Eric Paris --- include/linux/ext3_fs.h | 3 ++- include/linux/reiserfs_xattr.h | 2 ++ include/linux/security.h | 9 +++++++-- 3 files changed, 11 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ext3_fs.h b/include/linux/ext3_fs.h index 6ce1bca01724..87312a81daba 100644 --- a/include/linux/ext3_fs.h +++ b/include/linux/ext3_fs.h @@ -874,7 +874,8 @@ extern int ext3fs_dirhash(const char *name, int len, struct dx_hash_info *hinfo); /* ialloc.c */ -extern struct inode * ext3_new_inode (handle_t *, struct inode *, int); +extern struct inode * ext3_new_inode (handle_t *, struct inode *, + const struct qstr *, int); extern void ext3_free_inode (handle_t *, struct inode *); extern struct inode * ext3_orphan_get (struct super_block *, unsigned long); extern unsigned long ext3_count_free_inodes (struct super_block *); diff --git a/include/linux/reiserfs_xattr.h b/include/linux/reiserfs_xattr.h index 3b94c91f20a6..6deef5dc95fb 100644 --- a/include/linux/reiserfs_xattr.h +++ b/include/linux/reiserfs_xattr.h @@ -63,6 +63,7 @@ extern const struct xattr_handler reiserfs_xattr_trusted_handler; extern const struct xattr_handler reiserfs_xattr_security_handler; #ifdef CONFIG_REISERFS_FS_SECURITY int reiserfs_security_init(struct inode *dir, struct inode *inode, + const struct qstr *qstr, struct reiserfs_security_handle *sec); int reiserfs_security_write(struct reiserfs_transaction_handle *th, struct inode *inode, @@ -130,6 +131,7 @@ static inline void reiserfs_init_xattr_rwsem(struct inode *inode) #ifndef CONFIG_REISERFS_FS_SECURITY static inline int reiserfs_security_init(struct inode *dir, struct inode *inode, + const struct qstr *qstr, struct reiserfs_security_handle *sec) { return 0; diff --git a/include/linux/security.h b/include/linux/security.h index c642bb8b8f5a..05dd5a64aa76 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -25,6 +25,7 @@ #include #include #include +#include #include #include #include @@ -315,6 +316,7 @@ static inline void security_free_mnt_opts(struct security_mnt_opts *opts) * then it should return -EOPNOTSUPP to skip this processing. * @inode contains the inode structure of the newly created inode. * @dir contains the inode structure of the parent directory. + * @qstr contains the last path component of the new object * @name will be set to the allocated name suffix (e.g. selinux). * @value will be set to the allocated attribute value. * @len will be set to the length of the value. @@ -1435,7 +1437,8 @@ struct security_operations { int (*inode_alloc_security) (struct inode *inode); void (*inode_free_security) (struct inode *inode); int (*inode_init_security) (struct inode *inode, struct inode *dir, - char **name, void **value, size_t *len); + const struct qstr *qstr, char **name, + void **value, size_t *len); int (*inode_create) (struct inode *dir, struct dentry *dentry, int mode); int (*inode_link) (struct dentry *old_dentry, @@ -1696,7 +1699,8 @@ int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts); int security_inode_alloc(struct inode *inode); void security_inode_free(struct inode *inode); int security_inode_init_security(struct inode *inode, struct inode *dir, - char **name, void **value, size_t *len); + const struct qstr *qstr, char **name, + void **value, size_t *len); int security_inode_create(struct inode *dir, struct dentry *dentry, int mode); int security_inode_link(struct dentry *old_dentry, struct inode *dir, struct dentry *new_dentry); @@ -2023,6 +2027,7 @@ static inline void security_inode_free(struct inode *inode) static inline int security_inode_init_security(struct inode *inode, struct inode *dir, + const struct qstr *qstr, char **name, void **value, size_t *len) -- cgit v1.2.3 From 4916ca401e3051dad326ddd69765bd0e3f32fb9b Mon Sep 17 00:00:00 2001 From: Lucian Adrian Grijincu Date: Tue, 1 Feb 2011 18:44:56 +0200 Subject: security: remove unused security_sysctl hook The only user for this hook was selinux. sysctl routes every call through /proc/sys/. Selinux and other security modules use the file system checks for sysctl too, so no need for this hook any more. Signed-off-by: Lucian Adrian Grijincu Signed-off-by: Eric Paris --- include/linux/security.h | 13 ------------- 1 file changed, 13 deletions(-) (limited to 'include/linux') diff --git a/include/linux/security.h b/include/linux/security.h index 05dd5a64aa76..14167f2eb35a 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -1259,12 +1259,6 @@ static inline void security_free_mnt_opts(struct security_mnt_opts *opts) * @cap contains the capability . * @audit: Whether to write an audit message or not * Return 0 if the capability is granted for @tsk. - * @sysctl: - * Check permission before accessing the @table sysctl variable in the - * manner specified by @op. - * @table contains the ctl_table structure for the sysctl variable. - * @op contains the operation (001 = search, 002 = write, 004 = read). - * Return 0 if permission is granted. * @syslog: * Check permission before accessing the kernel message ring or changing * logging to the console. @@ -1385,7 +1379,6 @@ struct security_operations { const kernel_cap_t *permitted); int (*capable) (struct task_struct *tsk, const struct cred *cred, int cap, int audit); - int (*sysctl) (struct ctl_table *table, int op); int (*quotactl) (int cmds, int type, int id, struct super_block *sb); int (*quota_on) (struct dentry *dentry); int (*syslog) (int type); @@ -1668,7 +1661,6 @@ int security_capset(struct cred *new, const struct cred *old, int security_capable(int cap); int security_real_capable(struct task_struct *tsk, int cap); int security_real_capable_noaudit(struct task_struct *tsk, int cap); -int security_sysctl(struct ctl_table *table, int op); int security_quotactl(int cmds, int type, int id, struct super_block *sb); int security_quota_on(struct dentry *dentry); int security_syslog(int type); @@ -1887,11 +1879,6 @@ int security_real_capable_noaudit(struct task_struct *tsk, int cap) return ret; } -static inline int security_sysctl(struct ctl_table *table, int op) -{ - return 0; -} - static inline int security_quotactl(int cmds, int type, int id, struct super_block *sb) { -- cgit v1.2.3 From e3e241b2769b27669d05f0a05083acd21b4faa2c Mon Sep 17 00:00:00 2001 From: Patrick McHardy Date: Tue, 1 Feb 2011 18:52:42 +0100 Subject: netfilter: ipset: install ipset related header files Signed-off-by: Patrick McHardy --- include/linux/netfilter/Kbuild | 3 +++ include/linux/netfilter/ipset/Kbuild | 4 ++++ include/linux/netfilter/xt_set.h | 1 + 3 files changed, 8 insertions(+) create mode 100644 include/linux/netfilter/ipset/Kbuild (limited to 'include/linux') diff --git a/include/linux/netfilter/Kbuild b/include/linux/netfilter/Kbuild index 89c0d1e20d72..ba19544cce94 100644 --- a/include/linux/netfilter/Kbuild +++ b/include/linux/netfilter/Kbuild @@ -1,3 +1,5 @@ +header-y += ipset/ + header-y += nf_conntrack_common.h header-y += nf_conntrack_ftp.h header-y += nf_conntrack_sctp.h @@ -55,6 +57,7 @@ header-y += xt_quota.h header-y += xt_rateest.h header-y += xt_realm.h header-y += xt_recent.h +header-y += xt_set.h header-y += xt_sctp.h header-y += xt_socket.h header-y += xt_state.h diff --git a/include/linux/netfilter/ipset/Kbuild b/include/linux/netfilter/ipset/Kbuild new file mode 100644 index 000000000000..601fe71d34d5 --- /dev/null +++ b/include/linux/netfilter/ipset/Kbuild @@ -0,0 +1,4 @@ +header-y += ip_set.h +header-y += ip_set_bitmap.h +header-y += ip_set_hash.h +header-y += ip_set_list.h diff --git a/include/linux/netfilter/xt_set.h b/include/linux/netfilter/xt_set.h index 69b2bd1fb818..081f1ded2842 100644 --- a/include/linux/netfilter/xt_set.h +++ b/include/linux/netfilter/xt_set.h @@ -1,6 +1,7 @@ #ifndef _XT_SET_H #define _XT_SET_H +#include #include /* Revision 0 interface: backward compatible with netfilter/iptables */ -- cgit v1.2.3 From 1e6d767924c74929c0cfe839ae8f37bcee9e544e Mon Sep 17 00:00:00 2001 From: Richard Cochran Date: Tue, 1 Feb 2011 13:50:58 +0000 Subject: time: Correct the *settime* parameters Both settimeofday() and clock_settime() promise with a 'const' attribute not to alter the arguments passed in. This patch adds the missing 'const' attribute into the various kernel functions implementing these calls. Signed-off-by: Richard Cochran Acked-by: John Stultz LKML-Reference: <20110201134417.545698637@linutronix.de> Signed-off-by: Thomas Gleixner --- include/linux/posix-timers.h | 5 +++-- include/linux/security.h | 9 +++++---- include/linux/time.h | 5 +++-- 3 files changed, 11 insertions(+), 8 deletions(-) (limited to 'include/linux') diff --git a/include/linux/posix-timers.h b/include/linux/posix-timers.h index 3e23844a6990..b2c14cbd47a6 100644 --- a/include/linux/posix-timers.h +++ b/include/linux/posix-timers.h @@ -69,7 +69,8 @@ struct k_itimer { struct k_clock { int res; /* in nanoseconds */ int (*clock_getres) (const clockid_t which_clock, struct timespec *tp); - int (*clock_set) (const clockid_t which_clock, struct timespec * tp); + int (*clock_set) (const clockid_t which_clock, + const struct timespec *tp); int (*clock_get) (const clockid_t which_clock, struct timespec * tp); int (*timer_create) (struct k_itimer *timer); int (*nsleep) (const clockid_t which_clock, int flags, @@ -89,7 +90,7 @@ void register_posix_clock(const clockid_t clock_id, struct k_clock *new_clock); /* error handlers for timer_create, nanosleep and settime */ int do_posix_clock_nonanosleep(const clockid_t, int flags, struct timespec *, struct timespec __user *); -int do_posix_clock_nosettime(const clockid_t, struct timespec *tp); +int do_posix_clock_nosettime(const clockid_t, const struct timespec *tp); /* function to call to trigger timer event */ int posix_timer_event(struct k_itimer *timr, int si_private); diff --git a/include/linux/security.h b/include/linux/security.h index c642bb8b8f5a..c096aa6fca60 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -53,7 +53,7 @@ struct audit_krule; */ extern int cap_capable(struct task_struct *tsk, const struct cred *cred, int cap, int audit); -extern int cap_settime(struct timespec *ts, struct timezone *tz); +extern int cap_settime(const struct timespec *ts, const struct timezone *tz); extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode); extern int cap_ptrace_traceme(struct task_struct *parent); extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted); @@ -1387,7 +1387,7 @@ struct security_operations { int (*quotactl) (int cmds, int type, int id, struct super_block *sb); int (*quota_on) (struct dentry *dentry); int (*syslog) (int type); - int (*settime) (struct timespec *ts, struct timezone *tz); + int (*settime) (const struct timespec *ts, const struct timezone *tz); int (*vm_enough_memory) (struct mm_struct *mm, long pages); int (*bprm_set_creds) (struct linux_binprm *bprm); @@ -1669,7 +1669,7 @@ int security_sysctl(struct ctl_table *table, int op); int security_quotactl(int cmds, int type, int id, struct super_block *sb); int security_quota_on(struct dentry *dentry); int security_syslog(int type); -int security_settime(struct timespec *ts, struct timezone *tz); +int security_settime(const struct timespec *ts, const struct timezone *tz); int security_vm_enough_memory(long pages); int security_vm_enough_memory_mm(struct mm_struct *mm, long pages); int security_vm_enough_memory_kern(long pages); @@ -1904,7 +1904,8 @@ static inline int security_syslog(int type) return 0; } -static inline int security_settime(struct timespec *ts, struct timezone *tz) +static inline int security_settime(const struct timespec *ts, + const struct timezone *tz) { return cap_settime(ts, tz); } diff --git a/include/linux/time.h b/include/linux/time.h index 38c5206c2673..7c44e7778033 100644 --- a/include/linux/time.h +++ b/include/linux/time.h @@ -145,8 +145,9 @@ static inline u32 arch_gettimeoffset(void) { return 0; } #endif extern void do_gettimeofday(struct timeval *tv); -extern int do_settimeofday(struct timespec *tv); -extern int do_sys_settimeofday(struct timespec *tv, struct timezone *tz); +extern int do_settimeofday(const struct timespec *tv); +extern int do_sys_settimeofday(const struct timespec *tv, + const struct timezone *tz); #define do_posix_clock_monotonic_gettime(ts) ktime_get_ts(ts) extern long do_utimes(int dfd, const char __user *filename, struct timespec *times, int flags); struct itimerval; -- cgit v1.2.3 From 1976945eeaab5fa461735a6225a82c3cf1e65d62 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Tue, 1 Feb 2011 13:51:06 +0000 Subject: posix-timers: Introduce clock_posix_cpu The CLOCK_DISPATCH() macro is a horrible magic. We call common functions if a function pointer is not set. That's just backwards. To support dynamic file decriptor based clocks we need to cleanup that dispatch logic. Create a k_clock struct clock_posix_cpu which has all the posix-cpu-timer functions filled in. After the cleanup the functions can be made static. Signed-off-by: Thomas Gleixner Acked-by: John Stultz Tested-by: Richard Cochran LKML-Reference: <20110201134417.841974553@linutronix.de> --- include/linux/posix-timers.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/posix-timers.h b/include/linux/posix-timers.h index b2c14cbd47a6..1330ff331526 100644 --- a/include/linux/posix-timers.h +++ b/include/linux/posix-timers.h @@ -85,6 +85,8 @@ struct k_clock { struct itimerspec * cur_setting); }; +extern struct k_clock clock_posix_cpu; + void register_posix_clock(const clockid_t clock_id, struct k_clock *new_clock); /* error handlers for timer_create, nanosleep and settime */ -- cgit v1.2.3 From a5cd2880106cb2c79b3fe24f1c53dadba6a542a0 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Tue, 1 Feb 2011 13:51:11 +0000 Subject: posix-timers: Convert clock_nanosleep to clockid_to_kclock() Use the new kclock decoding function in clock_nanosleep and cleanup all kclocks which use the default functions. Signed-off-by: Thomas Gleixner Acked-by: John Stultz Tested-by: Richard Cochran LKML-Reference: <20110201134418.034175556@linutronix.de> --- include/linux/posix-timers.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/posix-timers.h b/include/linux/posix-timers.h index 1330ff331526..cd6da067bce1 100644 --- a/include/linux/posix-timers.h +++ b/include/linux/posix-timers.h @@ -90,8 +90,6 @@ extern struct k_clock clock_posix_cpu; void register_posix_clock(const clockid_t clock_id, struct k_clock *new_clock); /* error handlers for timer_create, nanosleep and settime */ -int do_posix_clock_nonanosleep(const clockid_t, int flags, struct timespec *, - struct timespec __user *); int do_posix_clock_nosettime(const clockid_t, const struct timespec *tp); /* function to call to trigger timer event */ -- cgit v1.2.3 From d608c18203a969e5d14572a9861c646d0bb66872 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Tue, 1 Feb 2011 13:51:43 +0000 Subject: thread_info: Remove legacy arg0-3 from restart_block posix timers were the last users of the legacy arg0-3 members of restart_block. Remove the cruft. Signed-off-by: Thomas Gleixner Acked-by: John Stultz Tested-by: Richard Cochran LKML-Reference: <20110201134418.326209775@linutronix.de> --- include/linux/thread_info.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/thread_info.h b/include/linux/thread_info.h index c90696544176..20fc303947d3 100644 --- a/include/linux/thread_info.h +++ b/include/linux/thread_info.h @@ -18,9 +18,6 @@ struct compat_timespec; struct restart_block { long (*fn)(struct restart_block *); union { - struct { - unsigned long arg0, arg1, arg2, arg3; - }; /* For futex_wait and futex_wait_requeue_pi */ struct { u32 __user *uaddr; -- cgit v1.2.3 From 26f9a4796af330173d790c8d2b5e2efcc489e755 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Tue, 1 Feb 2011 13:51:48 +0000 Subject: posix-timers: Convert clock_settime to clockid_to_kclock() Use the new kclock decoding function in clock_settime and cleanup all kclocks which use the default functions. Rename the misnomed common_clock_set() to posix_clock_realtime_set(). Signed-off-by: Thomas Gleixner Acked-by: John Stultz Tested-by: Richard Cochran LKML-Reference: <20110201134418.518851246@linutronix.de> --- include/linux/posix-timers.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/posix-timers.h b/include/linux/posix-timers.h index cd6da067bce1..4aaf0c5c7cea 100644 --- a/include/linux/posix-timers.h +++ b/include/linux/posix-timers.h @@ -89,9 +89,6 @@ extern struct k_clock clock_posix_cpu; void register_posix_clock(const clockid_t clock_id, struct k_clock *new_clock); -/* error handlers for timer_create, nanosleep and settime */ -int do_posix_clock_nosettime(const clockid_t, const struct timespec *tp); - /* function to call to trigger timer event */ int posix_timer_event(struct k_itimer *timr, int si_private); -- cgit v1.2.3 From ebaac757acae0431e2c79c00e09f1debdabbddd7 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Tue, 1 Feb 2011 13:51:56 +0000 Subject: posix-timers: Remove useless res field from k_clock The res member of kclock is only used by mmtimer.c, but even there it contains redundant information. Remove the field and fixup mmtimer. Signed-off-by: Thomas Gleixner Acked-by: John Stultz Tested-by: Richard Cochran LKML-Reference: <20110201134418.808714587@linutronix.de> --- include/linux/posix-timers.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/posix-timers.h b/include/linux/posix-timers.h index 4aaf0c5c7cea..ef574d177fb6 100644 --- a/include/linux/posix-timers.h +++ b/include/linux/posix-timers.h @@ -67,7 +67,6 @@ struct k_itimer { }; struct k_clock { - int res; /* in nanoseconds */ int (*clock_getres) (const clockid_t which_clock, struct timespec *tp); int (*clock_set) (const clockid_t which_clock, const struct timespec *tp); -- cgit v1.2.3 From bc2c8ea483d73e95fc88f1fc9e7755180f89b892 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Tue, 1 Feb 2011 13:52:12 +0000 Subject: posix-timers: Make posix-cpu-timers functions static All functions are accessed via clock_posix_cpu now. So make them static. Signed-off-by: Thomas Gleixner Acked-by: John Stultz Tested-by: Richard Cochran LKML-Reference: <20110201134419.389755466@linutronix.de> --- include/linux/posix-timers.h | 12 ------------ 1 file changed, 12 deletions(-) (limited to 'include/linux') diff --git a/include/linux/posix-timers.h b/include/linux/posix-timers.h index ef574d177fb6..8206255a547c 100644 --- a/include/linux/posix-timers.h +++ b/include/linux/posix-timers.h @@ -91,18 +91,6 @@ void register_posix_clock(const clockid_t clock_id, struct k_clock *new_clock); /* function to call to trigger timer event */ int posix_timer_event(struct k_itimer *timr, int si_private); -int posix_cpu_clock_getres(const clockid_t which_clock, struct timespec *ts); -int posix_cpu_clock_get(const clockid_t which_clock, struct timespec *ts); -int posix_cpu_clock_set(const clockid_t which_clock, const struct timespec *ts); -int posix_cpu_timer_create(struct k_itimer *timer); -int posix_cpu_nsleep(const clockid_t which_clock, int flags, - struct timespec *rqtp, struct timespec __user *rmtp); -long posix_cpu_nsleep_restart(struct restart_block *restart_block); -int posix_cpu_timer_set(struct k_itimer *timer, int flags, - struct itimerspec *new, struct itimerspec *old); -int posix_cpu_timer_del(struct k_itimer *timer); -void posix_cpu_timer_get(struct k_itimer *timer, struct itimerspec *itp); - void posix_cpu_timer_schedule(struct k_itimer *timer); void run_posix_cpu_timers(struct task_struct *task); -- cgit v1.2.3 From c528f7c6c208f1fae6b4025957173dec045e5f21 Mon Sep 17 00:00:00 2001 From: John Stultz Date: Tue, 1 Feb 2011 13:52:17 +0000 Subject: time: Introduce timekeeping_inject_offset This adds a kernel-internal timekeeping interface to add or subtract a fixed amount from CLOCK_REALTIME. This makes it so kernel users or interfaces trying to do so do not have to read the time, then add an offset and then call settimeofday(), which adds some extra error in comparision to just simply adding the offset in the kernel timekeeping core. Signed-off-by: John Stultz Signed-off-by: Richard Cochran LKML-Reference: <20110201134419.584311693@linutronix.de> Signed-off-by: Thomas Gleixner --- include/linux/time.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/time.h b/include/linux/time.h index 7c44e7778033..379b9037b5b4 100644 --- a/include/linux/time.h +++ b/include/linux/time.h @@ -166,6 +166,7 @@ extern struct timespec timespec_trunc(struct timespec t, unsigned gran); extern int timekeeping_valid_for_hres(void); extern u64 timekeeping_max_deferment(void); extern void timekeeping_leap_insert(int leapsecond); +extern int timekeeping_inject_offset(struct timespec *ts); struct tms; extern void do_sys_times(struct tms *); -- cgit v1.2.3 From 094aa1881fdc1b8889b442eb3511b31f3ec2b762 Mon Sep 17 00:00:00 2001 From: Richard Cochran Date: Tue, 1 Feb 2011 13:52:20 +0000 Subject: ntp: Add ADJ_SETOFFSET mode bit This patch adds a new mode bit into the timex structure. When set, the bit instructs the kernel to add the given time value to the current time. Signed-off-by: Richard Cochran Acked-by: John Stultz LKML-Reference: <20110201134320.688829863@linutronix.de> Signed-off-by: Thomas Gleixner --- include/linux/timex.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/timex.h b/include/linux/timex.h index d23999f9499d..aa60fe7b6ed6 100644 --- a/include/linux/timex.h +++ b/include/linux/timex.h @@ -73,7 +73,7 @@ struct timex { long tolerance; /* clock frequency tolerance (ppm) * (read only) */ - struct timeval time; /* (read only) */ + struct timeval time; /* (read only, except for ADJ_SETOFFSET) */ long tick; /* (modified) usecs between clock ticks */ long ppsfreq; /* pps frequency (scaled ppm) (ro) */ @@ -102,6 +102,7 @@ struct timex { #define ADJ_STATUS 0x0010 /* clock status */ #define ADJ_TIMECONST 0x0020 /* pll time constant */ #define ADJ_TAI 0x0080 /* set TAI offset */ +#define ADJ_SETOFFSET 0x0100 /* add 'time' to current time */ #define ADJ_MICRO 0x1000 /* select microsecond resolution */ #define ADJ_NANO 0x2000 /* select nanosecond resolution */ #define ADJ_TICK 0x4000 /* tick value */ -- cgit v1.2.3 From f1f1d5ebd10ffa4242bce7a90a56a222d6b7bc77 Mon Sep 17 00:00:00 2001 From: Richard Cochran Date: Tue, 1 Feb 2011 13:52:26 +0000 Subject: posix-timers: Introduce a syscall for clock tuning. A new syscall is introduced that allows tuning of a POSIX clock. The new call, clock_adjtime, takes two parameters, the clock ID and a pointer to a struct timex. Any ADJTIMEX(2) operation may be requested via this system call, but various POSIX clocks may or may not support tuning. [ tglx: Adapted to the posix-timer cleanup series. Avoid copy_to_user in the error case ] Signed-off-by: Richard Cochran Acked-by: John Stultz LKML-Reference: <20110201134419.869804645@linutronix.de> Signed-off-by: Thomas Gleixner --- include/linux/posix-timers.h | 2 ++ include/linux/syscalls.h | 2 ++ 2 files changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/posix-timers.h b/include/linux/posix-timers.h index 8206255a547c..79a1cea7f6ed 100644 --- a/include/linux/posix-timers.h +++ b/include/linux/posix-timers.h @@ -4,6 +4,7 @@ #include #include #include +#include union cpu_time_count { cputime_t cpu; @@ -71,6 +72,7 @@ struct k_clock { int (*clock_set) (const clockid_t which_clock, const struct timespec *tp); int (*clock_get) (const clockid_t which_clock, struct timespec * tp); + int (*clock_adj) (const clockid_t which_clock, struct timex *tx); int (*timer_create) (struct k_itimer *timer); int (*nsleep) (const clockid_t which_clock, int flags, struct timespec *, struct timespec __user *); diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 18cd0684fc4e..bfacab921239 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -311,6 +311,8 @@ asmlinkage long sys_clock_settime(clockid_t which_clock, const struct timespec __user *tp); asmlinkage long sys_clock_gettime(clockid_t which_clock, struct timespec __user *tp); +asmlinkage long sys_clock_adjtime(clockid_t which_clock, + struct timex __user *tx); asmlinkage long sys_clock_getres(clockid_t which_clock, struct timespec __user *tp); asmlinkage long sys_clock_nanosleep(clockid_t which_clock, int flags, -- cgit v1.2.3 From 81e294cba2596f5f10848bbe19d98b344c2a2d5c Mon Sep 17 00:00:00 2001 From: Richard Cochran Date: Tue, 1 Feb 2011 13:52:32 +0000 Subject: posix-timers: Add support for fd based clocks Extend the negative clockids which are currently used by posix cpu timers to encode the PID with a file descriptor based type which encodes the fd in the upper bits. Originally-from: Richard Cochran Signed-off-by: Thomas Gleixner Acked-by: John Stultz LKML-Reference: <20110201134420.062860200@linutronix.de> --- include/linux/posix-timers.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'include/linux') diff --git a/include/linux/posix-timers.h b/include/linux/posix-timers.h index 79a1cea7f6ed..88b9256169f8 100644 --- a/include/linux/posix-timers.h +++ b/include/linux/posix-timers.h @@ -18,6 +18,17 @@ struct cpu_timer_list { int firing; }; +/* + * Bit fields within a clockid: + * + * The most significant 29 bits hold either a pid or a file descriptor. + * + * Bit 2 indicates whether a cpu clock refers to a thread or a process. + * + * Bits 1 and 0 give the type: PROF=0, VIRT=1, SCHED=2, or FD=3. + * + * A clockid is invalid if bits 2, 1, and 0 are all set. + */ #define CPUCLOCK_PID(clock) ((pid_t) ~((clock) >> 3)) #define CPUCLOCK_PERTHREAD(clock) \ (((clock) & (clockid_t) CPUCLOCK_PERTHREAD_MASK) != 0) @@ -29,6 +40,8 @@ struct cpu_timer_list { #define CPUCLOCK_VIRT 1 #define CPUCLOCK_SCHED 2 #define CPUCLOCK_MAX 3 +#define CLOCKFD CPUCLOCK_MAX +#define CLOCKFD_MASK (CPUCLOCK_PERTHREAD_MASK|CPUCLOCK_CLOCK_MASK) #define MAKE_PROCESS_CPUCLOCK(pid, clock) \ ((~(clockid_t) (pid) << 3) | (clockid_t) (clock)) -- cgit v1.2.3 From 527087374faa488776a789375a7d6ea74fda6f71 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Wed, 2 Feb 2011 12:10:09 +0100 Subject: posix-timers: Cleanup namespace Rename register_posix_clock() to posix_timers_register_clock(). That's what the function really does. As a side effect this cleans up the posix_clock namespace for the upcoming dynamic posix_clock infrastructure. Signed-off-by: Thomas Gleixner Tested-by: Richard Cochran Cc: John Stultz LKML-Reference: --- include/linux/posix-timers.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/posix-timers.h b/include/linux/posix-timers.h index 88b9256169f8..9d6ffe2c92e5 100644 --- a/include/linux/posix-timers.h +++ b/include/linux/posix-timers.h @@ -101,7 +101,7 @@ struct k_clock { extern struct k_clock clock_posix_cpu; -void register_posix_clock(const clockid_t clock_id, struct k_clock *new_clock); +void posix_timers_register_clock(const clockid_t clock_id, struct k_clock *new_clock); /* function to call to trigger timer event */ int posix_timer_event(struct k_itimer *timr, int si_private); -- cgit v1.2.3 From 0606f422b453f76c31ab2b1bd52943ff06a2dcf2 Mon Sep 17 00:00:00 2001 From: Richard Cochran Date: Tue, 1 Feb 2011 13:52:35 +0000 Subject: posix clocks: Introduce dynamic clocks This patch adds support for adding and removing posix clocks. The clock lifetime cycle is patterned after usb devices. Each clock is represented by a standard character device. In addition, the driver may optionally implement custom character device operations. The posix clock and timer system calls listed below now work with dynamic posix clocks, as well as the traditional static clocks. The following system calls are affected: - clock_adjtime (brand new syscall) - clock_gettime - clock_getres - clock_settime - timer_create - timer_delete - timer_gettime - timer_settime [ tglx: Adapted to the posix-timer cleanup. Moved clock_posix_dynamic to posix-clock.c and made all referenced functions static ] Signed-off-by: Richard Cochran Acked-by: John Stultz LKML-Reference: <20110201134420.164172635@linutronix.de> Signed-off-by: Thomas Gleixner --- include/linux/posix-clock.h | 150 +++++++++++++++++++++++++++++++++++++++++++ include/linux/posix-timers.h | 6 +- 2 files changed, 155 insertions(+), 1 deletion(-) create mode 100644 include/linux/posix-clock.h (limited to 'include/linux') diff --git a/include/linux/posix-clock.h b/include/linux/posix-clock.h new file mode 100644 index 000000000000..369e19d3750b --- /dev/null +++ b/include/linux/posix-clock.h @@ -0,0 +1,150 @@ +/* + * posix-clock.h - support for dynamic clock devices + * + * Copyright (C) 2010 OMICRON electronics GmbH + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ +#ifndef _LINUX_POSIX_CLOCK_H_ +#define _LINUX_POSIX_CLOCK_H_ + +#include +#include +#include +#include + +struct posix_clock; + +/** + * struct posix_clock_operations - functional interface to the clock + * + * Every posix clock is represented by a character device. Drivers may + * optionally offer extended capabilities by implementing the + * character device methods. The character device file operations are + * first handled by the clock device layer, then passed on to the + * driver by calling these functions. + * + * @owner: The clock driver should set to THIS_MODULE + * @clock_adjtime: Adjust the clock + * @clock_gettime: Read the current time + * @clock_getres: Get the clock resolution + * @clock_settime: Set the current time value + * @timer_create: Create a new timer + * @timer_delete: Remove a previously created timer + * @timer_gettime: Get remaining time and interval of a timer + * @timer_setttime: Set a timer's initial expiration and interval + * @fasync: Optional character device fasync method + * @mmap: Optional character device mmap method + * @open: Optional character device open method + * @release: Optional character device release method + * @ioctl: Optional character device ioctl method + * @read: Optional character device read method + * @poll: Optional character device poll method + */ +struct posix_clock_operations { + struct module *owner; + + int (*clock_adjtime)(struct posix_clock *pc, struct timex *tx); + + int (*clock_gettime)(struct posix_clock *pc, struct timespec *ts); + + int (*clock_getres) (struct posix_clock *pc, struct timespec *ts); + + int (*clock_settime)(struct posix_clock *pc, + const struct timespec *ts); + + int (*timer_create) (struct posix_clock *pc, struct k_itimer *kit); + + int (*timer_delete) (struct posix_clock *pc, struct k_itimer *kit); + + void (*timer_gettime)(struct posix_clock *pc, + struct k_itimer *kit, struct itimerspec *tsp); + + int (*timer_settime)(struct posix_clock *pc, + struct k_itimer *kit, int flags, + struct itimerspec *tsp, struct itimerspec *old); + /* + * Optional character device methods: + */ + int (*fasync) (struct posix_clock *pc, + int fd, struct file *file, int on); + + long (*ioctl) (struct posix_clock *pc, + unsigned int cmd, unsigned long arg); + + int (*mmap) (struct posix_clock *pc, + struct vm_area_struct *vma); + + int (*open) (struct posix_clock *pc, fmode_t f_mode); + + uint (*poll) (struct posix_clock *pc, + struct file *file, poll_table *wait); + + int (*release) (struct posix_clock *pc); + + ssize_t (*read) (struct posix_clock *pc, + uint flags, char __user *buf, size_t cnt); +}; + +/** + * struct posix_clock - represents a dynamic posix clock + * + * @ops: Functional interface to the clock + * @cdev: Character device instance for this clock + * @kref: Reference count. + * @mutex: Protects the 'zombie' field from concurrent access. + * @zombie: If 'zombie' is true, then the hardware has disappeared. + * @release: A function to free the structure when the reference count reaches + * zero. May be NULL if structure is statically allocated. + * + * Drivers should embed their struct posix_clock within a private + * structure, obtaining a reference to it during callbacks using + * container_of(). + */ +struct posix_clock { + struct posix_clock_operations ops; + struct cdev cdev; + struct kref kref; + struct mutex mutex; + bool zombie; + void (*release)(struct posix_clock *clk); +}; + +/** + * posix_clock_register() - register a new clock + * @clk: Pointer to the clock. Caller must provide 'ops' and 'release' + * @devid: Allocated device id + * + * A clock driver calls this function to register itself with the + * clock device subsystem. If 'clk' points to dynamically allocated + * memory, then the caller must provide a 'release' function to free + * that memory. + * + * Returns zero on success, non-zero otherwise. + */ +int posix_clock_register(struct posix_clock *clk, dev_t devid); + +/** + * posix_clock_unregister() - unregister a clock + * @clk: Clock instance previously registered via posix_clock_register() + * + * A clock driver calls this function to remove itself from the clock + * device subsystem. The posix_clock itself will remain (in an + * inactive state) until its reference count drops to zero, at which + * point it will be deallocated with its 'release' method. + */ +void posix_clock_unregister(struct posix_clock *clk); + +#endif diff --git a/include/linux/posix-timers.h b/include/linux/posix-timers.h index 9d6ffe2c92e5..d51243ae0726 100644 --- a/include/linux/posix-timers.h +++ b/include/linux/posix-timers.h @@ -32,7 +32,7 @@ struct cpu_timer_list { #define CPUCLOCK_PID(clock) ((pid_t) ~((clock) >> 3)) #define CPUCLOCK_PERTHREAD(clock) \ (((clock) & (clockid_t) CPUCLOCK_PERTHREAD_MASK) != 0) -#define CPUCLOCK_PID_MASK 7 + #define CPUCLOCK_PERTHREAD_MASK 4 #define CPUCLOCK_WHICH(clock) ((clock) & (clockid_t) CPUCLOCK_CLOCK_MASK) #define CPUCLOCK_CLOCK_MASK 3 @@ -48,6 +48,9 @@ struct cpu_timer_list { #define MAKE_THREAD_CPUCLOCK(tid, clock) \ MAKE_PROCESS_CPUCLOCK((tid), (clock) | CPUCLOCK_PERTHREAD_MASK) +#define FD_TO_CLOCKID(fd) ((~(clockid_t) (fd) << 3) | CLOCKFD) +#define CLOCKID_TO_FD(clk) ((unsigned int) ~((clk) >> 3)) + /* POSIX.1b interval timer structure. */ struct k_itimer { struct list_head list; /* free/ allocate list */ @@ -100,6 +103,7 @@ struct k_clock { }; extern struct k_clock clock_posix_cpu; +extern struct k_clock clock_posix_dynamic; void posix_timers_register_clock(const clockid_t clock_id, struct k_clock *new_clock); -- cgit v1.2.3 From 724bab476bcac9f7d0b5204cb06e346216d42166 Mon Sep 17 00:00:00 2001 From: Patrick McHardy Date: Wed, 2 Feb 2011 23:50:01 +0100 Subject: netfilter: ipset: fix linking with CONFIG_IPV6=n Add a dummy ip_set_get_ip6_port function that unconditionally returns false for CONFIG_IPV6=n and convert the real function to ipv6_skip_exthdr() to avoid pulling in the ip6_tables module when loading ipset. Signed-off-by: Patrick McHardy --- include/linux/netfilter/ipset/ip_set_getport.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/linux') diff --git a/include/linux/netfilter/ipset/ip_set_getport.h b/include/linux/netfilter/ipset/ip_set_getport.h index 694c433298b8..3882a81a3b3c 100644 --- a/include/linux/netfilter/ipset/ip_set_getport.h +++ b/include/linux/netfilter/ipset/ip_set_getport.h @@ -3,8 +3,18 @@ extern bool ip_set_get_ip4_port(const struct sk_buff *skb, bool src, __be16 *port, u8 *proto); + +#if defined(CONFIG_IP6_NF_IPTABLES) || defined(CONFIG_IP6_NF_IPTABLES_MODULE) extern bool ip_set_get_ip6_port(const struct sk_buff *skb, bool src, __be16 *port, u8 *proto); +#else +static inline bool ip_set_get_ip6_port(const struct sk_buff *skb, bool src, + __be16 *port, u8 *proto) +{ + return false; +} +#endif + extern bool ip_set_get_ip_port(const struct sk_buff *skb, u8 pf, bool src, __be16 *port); -- cgit v1.2.3 From 9291747f118d6404e509747b85ff5f6dfec368d2 Mon Sep 17 00:00:00 2001 From: Patrick McHardy Date: Thu, 3 Feb 2011 00:05:43 +0100 Subject: netfilter: xtables: add device group match Add a new 'devgroup' match to match on the device group of the incoming and outgoing network device of a packet. Signed-off-by: Patrick McHardy --- include/linux/netfilter/Kbuild | 1 + include/linux/netfilter/xt_devgroup.h | 21 +++++++++++++++++++++ 2 files changed, 22 insertions(+) create mode 100644 include/linux/netfilter/xt_devgroup.h (limited to 'include/linux') diff --git a/include/linux/netfilter/Kbuild b/include/linux/netfilter/Kbuild index ba19544cce94..15e83bf3dd58 100644 --- a/include/linux/netfilter/Kbuild +++ b/include/linux/netfilter/Kbuild @@ -37,6 +37,7 @@ header-y += xt_connmark.h header-y += xt_conntrack.h header-y += xt_cpu.h header-y += xt_dccp.h +header-y += xt_devgroup.h header-y += xt_dscp.h header-y += xt_esp.h header-y += xt_hashlimit.h diff --git a/include/linux/netfilter/xt_devgroup.h b/include/linux/netfilter/xt_devgroup.h new file mode 100644 index 000000000000..1babde0ec900 --- /dev/null +++ b/include/linux/netfilter/xt_devgroup.h @@ -0,0 +1,21 @@ +#ifndef _XT_DEVGROUP_H +#define _XT_DEVGROUP_H + +#include + +enum xt_devgroup_flags { + XT_DEVGROUP_MATCH_SRC = 0x1, + XT_DEVGROUP_INVERT_SRC = 0x2, + XT_DEVGROUP_MATCH_DST = 0x4, + XT_DEVGROUP_INVERT_DST = 0x8, +}; + +struct xt_devgroup_info { + __u32 flags; + __u32 src_group; + __u32 src_mask; + __u32 dst_group; + __u32 dst_mask; +}; + +#endif /* _XT_DEVGROUP_H */ -- cgit v1.2.3 From 19942822df65ee4a47c2e6d6d70cace1b7f01710 Mon Sep 17 00:00:00 2001 From: Johannes Weiner Date: Tue, 1 Feb 2011 15:52:43 -0800 Subject: memcg: prevent endless loop when charging huge pages to near-limit group If reclaim after a failed charging was unsuccessful, the limits are checked again, just in case they settled by means of other tasks. This is all fine as long as every charge is of size PAGE_SIZE, because in that case, being below the limit means having at least PAGE_SIZE bytes available. But with transparent huge pages, we may end up in an endless loop where charging and reclaim fail, but we keep going because the limits are not yet exceeded, although not allowing for a huge page. Fix this up by explicitely checking for enough room, not just whether we are within limits. Signed-off-by: Johannes Weiner Acked-by: KAMEZAWA Hiroyuki Reviewed-by: Minchan Kim Cc: Balbir Singh Cc: Daisuke Nishimura Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/res_counter.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'include/linux') diff --git a/include/linux/res_counter.h b/include/linux/res_counter.h index fcb9884df618..a5930cb66145 100644 --- a/include/linux/res_counter.h +++ b/include/linux/res_counter.h @@ -182,6 +182,26 @@ static inline bool res_counter_check_under_limit(struct res_counter *cnt) return ret; } +/** + * res_counter_check_margin - check if the counter allows charging + * @cnt: the resource counter to check + * @bytes: the number of bytes to check the remaining space against + * + * Returns a boolean value on whether the counter can be charged + * @bytes or whether this would exceed the limit. + */ +static inline bool res_counter_check_margin(struct res_counter *cnt, + unsigned long bytes) +{ + bool ret; + unsigned long flags; + + spin_lock_irqsave(&cnt->lock, flags); + ret = cnt->limit - cnt->usage >= bytes; + spin_unlock_irqrestore(&cnt->lock, flags); + return ret; +} + static inline bool res_counter_check_under_soft_limit(struct res_counter *cnt) { bool ret; -- cgit v1.2.3 From 1a44bc8c7cfe69756a116d38aef992d50fc1969d Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Tue, 1 Feb 2011 15:52:46 -0800 Subject: vfs: sparse: remove a warning on OPEN_FMODE() AND-ing FMODE_* constant with normal integer results in following sparse warnings. Fix it. fs/open.c:662:21: warning: restricted fmode_t degrades to integer fs/anon_inodes.c:123:34: warning: restricted fmode_t degrades to integer Signed-off-by: Namhyung Kim Cc: Al Viro Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/fs.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index 32b38cd829d3..675678a01f50 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2555,9 +2555,11 @@ int proc_nr_inodes(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos); int __init get_filesystem_list(char *buf); +#define __FMODE_NONOTIFY ((__force int) FMODE_NONOTIFY) + #define ACC_MODE(x) ("\004\002\006\006"[(x)&O_ACCMODE]) #define OPEN_FMODE(flag) ((__force fmode_t)(((flag + 1) & O_ACCMODE) | \ - (flag & FMODE_NONOTIFY))) + (flag & __FMODE_NONOTIFY))) #endif /* __KERNEL__ */ #endif /* _LINUX_FS_H */ -- cgit v1.2.3 From 3cd90ea42f2c15f928b70ed66f6d8ed0a8e7aadd Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Tue, 1 Feb 2011 15:52:46 -0800 Subject: vfs: sparse: add __FMODE_EXEC FMODE_EXEC is a constant type of fmode_t but was used with normal integer constants. This results in following warnings from sparse. Fix it using new macro __FMODE_EXEC. fs/exec.c:116:58: warning: restricted fmode_t degrades to integer fs/exec.c:689:58: warning: restricted fmode_t degrades to integer fs/fcntl.c:777:9: warning: restricted fmode_t degrades to integer Signed-off-by: Namhyung Kim Cc: Al Viro Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/fs.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index 675678a01f50..bd3215940c37 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2555,6 +2555,7 @@ int proc_nr_inodes(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos); int __init get_filesystem_list(char *buf); +#define __FMODE_EXEC ((__force int) FMODE_EXEC) #define __FMODE_NONOTIFY ((__force int) FMODE_NONOTIFY) #define ACC_MODE(x) ("\004\002\006\006"[(x)&O_ACCMODE]) -- cgit v1.2.3 From e4a9ea5ee7c8812a7bf0c3fb725ceeaa3d4c2fcc Mon Sep 17 00:00:00 2001 From: Steven Rostedt Date: Thu, 27 Jan 2011 09:15:30 -0500 Subject: tracing: Replace trace_event struct array with pointer array Currently the trace_event structures are placed in the _ftrace_events section, and at link time, the linker makes one large array of all the trace_event structures. On boot up, this array is read (much like the initcall sections) and the events are processed. The problem is that there is no guarantee that gcc will place complex structures nicely together in an array format. Two structures in the same file may be placed awkwardly, because gcc has no clue that they are suppose to be in an array. A hack was used previous to force the alignment to 4, to pack the structures together. But this caused alignment issues with other architectures (sparc). Instead of packing the structures into an array, the structures' addresses are now put into the _ftrace_event section. As pointers are always the natural alignment, gcc should always pack them tightly together (otherwise initcall, extable, etc would also fail). By having the pointers to the structures in the section, we can still iterate the trace_events without causing unnecessary alignment problems with other architectures, or depending on the current behaviour of gcc that will likely change in the future just to tick us kernel developers off a little more. The _ftrace_event section is also moved into the .init.data section as it is now only needed at boot up. Suggested-by: David Miller Cc: Mathieu Desnoyers Acked-by: David S. Miller Signed-off-by: Steven Rostedt --- include/linux/module.h | 2 +- include/linux/syscalls.h | 10 ++++++---- 2 files changed, 7 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/module.h b/include/linux/module.h index e7c6385c6683..7695a303bb55 100644 --- a/include/linux/module.h +++ b/include/linux/module.h @@ -389,7 +389,7 @@ struct module unsigned int num_trace_bprintk_fmt; #endif #ifdef CONFIG_EVENT_TRACING - struct ftrace_event_call *trace_events; + struct ftrace_event_call **trace_events; unsigned int num_trace_events; #endif #ifdef CONFIG_FTRACE_MCOUNT_RECORD diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 18cd0684fc4e..45508fec366d 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -128,28 +128,30 @@ extern struct trace_event_functions exit_syscall_print_funcs; static struct syscall_metadata \ __attribute__((__aligned__(4))) __syscall_meta_##sname; \ static struct ftrace_event_call __used \ - __attribute__((__aligned__(4))) \ - __attribute__((section("_ftrace_events"))) \ event_enter_##sname = { \ .name = "sys_enter"#sname, \ .class = &event_class_syscall_enter, \ .event.funcs = &enter_syscall_print_funcs, \ .data = (void *)&__syscall_meta_##sname,\ }; \ + static struct ftrace_event_call __used \ + __attribute__((section("_ftrace_events"))) \ + *__event_enter_##sname = &event_enter_##sname; \ __TRACE_EVENT_FLAGS(enter_##sname, TRACE_EVENT_FL_CAP_ANY) #define SYSCALL_TRACE_EXIT_EVENT(sname) \ static struct syscall_metadata \ __attribute__((__aligned__(4))) __syscall_meta_##sname; \ static struct ftrace_event_call __used \ - __attribute__((__aligned__(4))) \ - __attribute__((section("_ftrace_events"))) \ event_exit_##sname = { \ .name = "sys_exit"#sname, \ .class = &event_class_syscall_exit, \ .event.funcs = &exit_syscall_print_funcs, \ .data = (void *)&__syscall_meta_##sname,\ }; \ + static struct ftrace_event_call __used \ + __attribute__((section("_ftrace_events"))) \ + *__event_exit_##sname = &event_exit_##sname; \ __TRACE_EVENT_FLAGS(exit_##sname, TRACE_EVENT_FL_CAP_ANY) #define SYSCALL_METADATA(sname, nb) \ -- cgit v1.2.3 From 45e144339ac59971eb44be32e1282760aaabe861 Mon Sep 17 00:00:00 2001 From: stephen hemminger Date: Wed, 2 Feb 2011 15:21:10 +0000 Subject: sched: CHOKe flow scheduler CHOKe ("CHOose and Kill" or "CHOose and Keep") is an alternative packet scheduler based on the Random Exponential Drop (RED) algorithm. The core idea is: For every packet arrival: Calculate Qave if (Qave < minth) Queue the new packet else Select randomly a packet from the queue if (both packets from same flow) then Drop both the packets else if (Qave > maxth) Drop packet else Admit packet with proability p (same as RED) See also: Rong Pan, Balaji Prabhakar, Konstantinos Psounis, "CHOKe: a stateless active queue management scheme for approximating fair bandwidth allocation", Proceeding of INFOCOM'2000, March 2000. Help from: Eric Dumazet Patrick McHardy Signed-off-by: Stephen Hemminger Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- include/linux/pkt_sched.h | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pkt_sched.h b/include/linux/pkt_sched.h index 776cd93d5f7b..d4bb6f58c90c 100644 --- a/include/linux/pkt_sched.h +++ b/include/linux/pkt_sched.h @@ -247,6 +247,35 @@ struct tc_gred_sopt { __u16 pad1; }; +/* CHOKe section */ + +enum { + TCA_CHOKE_UNSPEC, + TCA_CHOKE_PARMS, + TCA_CHOKE_STAB, + __TCA_CHOKE_MAX, +}; + +#define TCA_CHOKE_MAX (__TCA_CHOKE_MAX - 1) + +struct tc_choke_qopt { + __u32 limit; /* Hard queue length (packets) */ + __u32 qth_min; /* Min average threshold (packets) */ + __u32 qth_max; /* Max average threshold (packets) */ + unsigned char Wlog; /* log(W) */ + unsigned char Plog; /* log(P_max/(qth_max-qth_min)) */ + unsigned char Scell_log; /* cell size for idle damping */ + unsigned char flags; /* see RED flags */ +}; + +struct tc_choke_xstats { + __u32 early; /* Early drops */ + __u32 pdrop; /* Drops due to queue limits */ + __u32 other; /* Drops due to drop() calls */ + __u32 marked; /* Marked packets */ + __u32 matched; /* Drops due to flow match */ +}; + /* HTB section */ #define TC_HTB_NUMPRIO 8 #define TC_HTB_MAXDEPTH 8 -- cgit v1.2.3 From fe4b04fa31a6dcf4358aa84cf81e5a7fd079469b Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Wed, 2 Feb 2011 13:19:09 +0100 Subject: perf: Cure task_oncpu_function_call() races Oleg reported that on architectures with __ARCH_WANT_INTERRUPTS_ON_CTXSW the IPI from task_oncpu_function_call() can land before perf_event_task_sched_in() and cause interesting situations for eg. perf_install_in_context(). This patch reworks the task_oncpu_function_call() interface to give a more usable primitive as well as rework all its users to hopefully be more obvious as well as remove the races. While looking at the code I also found a number of races against perf_event_task_sched_out() which can flip contexts between tasks so plug those too. Reported-and-reviewed-by: Oleg Nesterov Signed-off-by: Peter Zijlstra LKML-Reference: Signed-off-by: Ingo Molnar --- include/linux/sched.h | 7 ------- 1 file changed, 7 deletions(-) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index d747f948b34e..0b40ee3f6d7a 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -2578,13 +2578,6 @@ static inline void inc_syscw(struct task_struct *tsk) #define TASK_SIZE_OF(tsk) TASK_SIZE #endif -/* - * Call the function if the target task is executing on a CPU right now: - */ -extern void task_oncpu_function_call(struct task_struct *p, - void (*func) (void *info), void *info); - - #ifdef CONFIG_MM_OWNER extern void mm_update_next_owner(struct mm_struct *mm); extern void mm_init_owner(struct mm_struct *mm, struct task_struct *p); -- cgit v1.2.3 From ac53db596cc08ecb8040cfb6f71ae40c6f2041c4 Mon Sep 17 00:00:00 2001 From: Rik van Riel Date: Tue, 1 Feb 2011 09:51:03 -0500 Subject: sched: Use a buddy to implement yield_task_fair() Use the buddy mechanism to implement yield_task_fair. This allows us to skip onto the next highest priority se at every level in the CFS tree, unless doing so would introduce gross unfairness in CPU time distribution. We order the buddy selection in pick_next_entity to check yield first, then last, then next. We need next to be able to override yield, because it is possible for the "next" and "yield" task to be different processen in the same sub-tree of the CFS tree. When they are, we need to go into that sub-tree regardless of the "yield" hint, and pick the correct entity once we get to the right level. Signed-off-by: Rik van Riel Signed-off-by: Peter Zijlstra LKML-Reference: <20110201095103.3a79e92a@annuminas.surriel.com> Signed-off-by: Ingo Molnar --- include/linux/sched.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index 0542774914d4..4e9fad271c30 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1942,8 +1942,6 @@ int sched_rt_handler(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos); -extern unsigned int sysctl_sched_compat_yield; - #ifdef CONFIG_SCHED_AUTOGROUP extern unsigned int sysctl_sched_autogroup_enabled; -- cgit v1.2.3 From d95f412200652694e63e64bfd49f0ae274a54479 Mon Sep 17 00:00:00 2001 From: Mike Galbraith Date: Tue, 1 Feb 2011 09:50:51 -0500 Subject: sched: Add yield_to(task, preempt) functionality Currently only implemented for fair class tasks. Add a yield_to_task method() to the fair scheduling class. allowing the caller of yield_to() to accelerate another thread in it's thread group, task group. Implemented via a scheduler hint, using cfs_rq->next to encourage the target being selected. We can rely on pick_next_entity to keep things fair, so noone can accelerate a thread that has already used its fair share of CPU time. This also means callers should only call yield_to when they really mean it. Calling it too often can result in the scheduler just ignoring the hint. Signed-off-by: Rik van Riel Signed-off-by: Marcelo Tosatti Signed-off-by: Mike Galbraith Signed-off-by: Peter Zijlstra LKML-Reference: <20110201095051.4ddb7738@annuminas.surriel.com> Signed-off-by: Ingo Molnar --- include/linux/sched.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index 4e9fad271c30..c88b3bfbd09e 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1058,6 +1058,7 @@ struct sched_class { void (*enqueue_task) (struct rq *rq, struct task_struct *p, int flags); void (*dequeue_task) (struct rq *rq, struct task_struct *p, int flags); void (*yield_task) (struct rq *rq); + bool (*yield_to_task) (struct rq *rq, struct task_struct *p, bool preempt); void (*check_preempt_curr) (struct rq *rq, struct task_struct *p, int flags); @@ -1972,6 +1973,7 @@ static inline int rt_mutex_getprio(struct task_struct *p) # define rt_mutex_adjust_pi(p) do { } while (0) #endif +extern bool yield_to(struct task_struct *p, bool preempt); extern void set_user_nice(struct task_struct *p, long nice); extern int task_prio(const struct task_struct *p); extern int task_nice(const struct task_struct *p); -- cgit v1.2.3 From 654986462939cd7ec18f276c6379a334dac106a7 Mon Sep 17 00:00:00 2001 From: Mathieu Desnoyers Date: Wed, 26 Jan 2011 17:26:22 -0500 Subject: tracepoints: Fix section alignment using pointer array Make the tracepoints more robust, making them solid enough to handle compiler changes by not relying on anything based on compiler-specific behavior with respect to structure alignment. Implement an approach proposed by David Miller: use an array of const pointers to refer to the individual structures, and export this pointer array through the linker script rather than the structures per se. It will consume 32 extra bytes per tracepoint (24 for structure padding and 8 for the pointers), but are less likely to break due to compiler changes. History: commit 7e066fb8 tracepoints: add DECLARE_TRACE() and DEFINE_TRACE() added the aligned(32) type and variable attribute to the tracepoint structures to deal with gcc happily aligning statically defined structures on 32-byte multiples. One attempt was to use a 8-byte alignment for tracepoint structures by applying both the variable and type attribute to tracepoint structures definitions and declarations. It worked fine with gcc 4.5.1, but broke with gcc 4.4.4 and 4.4.5. The reason is that the "aligned" attribute only specify the _minimum_ alignment for a structure, leaving both the compiler and the linker free to align on larger multiples. Because tracepoint.c expects the structures to be placed as an array within each section, up-alignment cause NULL-pointer exceptions due to the extra unexpected padding. (this patch applies on top of -tip) Signed-off-by: Mathieu Desnoyers Acked-by: David S. Miller LKML-Reference: <20110126222622.GA10794@Krystal> CC: Frederic Weisbecker CC: Ingo Molnar CC: Thomas Gleixner CC: Andrew Morton CC: Peter Zijlstra CC: Rusty Russell Signed-off-by: Steven Rostedt --- include/linux/module.h | 2 +- include/linux/tracepoint.h | 35 ++++++++++++++++++++--------------- 2 files changed, 21 insertions(+), 16 deletions(-) (limited to 'include/linux') diff --git a/include/linux/module.h b/include/linux/module.h index 7695a303bb55..9bdf27c7615b 100644 --- a/include/linux/module.h +++ b/include/linux/module.h @@ -377,7 +377,7 @@ struct module keeping pointers to this stuff */ char *args; #ifdef CONFIG_TRACEPOINTS - struct tracepoint *tracepoints; + struct tracepoint * const *tracepoints_ptrs; unsigned int num_tracepoints; #endif #ifdef HAVE_JUMP_LABEL diff --git a/include/linux/tracepoint.h b/include/linux/tracepoint.h index c6814616653b..97c84a58efb8 100644 --- a/include/linux/tracepoint.h +++ b/include/linux/tracepoint.h @@ -33,12 +33,7 @@ struct tracepoint { void (*regfunc)(void); void (*unregfunc)(void); struct tracepoint_func __rcu *funcs; -} __attribute__((aligned(32))); /* - * Aligned on 32 bytes because it is - * globally visible and gcc happily - * align these on the structure size. - * Keep in sync with vmlinux.lds.h. - */ +}; /* * Connect a probe to a tracepoint. @@ -61,15 +56,15 @@ extern void tracepoint_probe_update_all(void); struct tracepoint_iter { struct module *module; - struct tracepoint *tracepoint; + struct tracepoint * const *tracepoint; }; extern void tracepoint_iter_start(struct tracepoint_iter *iter); extern void tracepoint_iter_next(struct tracepoint_iter *iter); extern void tracepoint_iter_stop(struct tracepoint_iter *iter); extern void tracepoint_iter_reset(struct tracepoint_iter *iter); -extern int tracepoint_get_iter_range(struct tracepoint **tracepoint, - struct tracepoint *begin, struct tracepoint *end); +extern int tracepoint_get_iter_range(struct tracepoint * const **tracepoint, + struct tracepoint * const *begin, struct tracepoint * const *end); /* * tracepoint_synchronize_unregister must be called between the last tracepoint @@ -84,11 +79,13 @@ static inline void tracepoint_synchronize_unregister(void) #define PARAMS(args...) args #ifdef CONFIG_TRACEPOINTS -extern void tracepoint_update_probe_range(struct tracepoint *begin, - struct tracepoint *end); +extern +void tracepoint_update_probe_range(struct tracepoint * const *begin, + struct tracepoint * const *end); #else -static inline void tracepoint_update_probe_range(struct tracepoint *begin, - struct tracepoint *end) +static inline +void tracepoint_update_probe_range(struct tracepoint * const *begin, + struct tracepoint * const *end) { } #endif /* CONFIG_TRACEPOINTS */ @@ -174,12 +171,20 @@ do_trace: \ { \ } +/* + * We have no guarantee that gcc and the linker won't up-align the tracepoint + * structures, so we create an array of pointers that will be used for iteration + * on the tracepoints. + */ #define DEFINE_TRACE_FN(name, reg, unreg) \ static const char __tpstrtab_##name[] \ __attribute__((section("__tracepoints_strings"))) = #name; \ struct tracepoint __tracepoint_##name \ - __attribute__((section("__tracepoints"), aligned(32))) = \ - { __tpstrtab_##name, 0, reg, unreg, NULL } + __attribute__((section("__tracepoints"))) = \ + { __tpstrtab_##name, 0, reg, unreg, NULL }; \ + static struct tracepoint * const __tracepoint_ptr_##name __used \ + __attribute__((section("__tracepoints_ptrs"))) = \ + &__tracepoint_##name; #define DEFINE_TRACE(name) \ DEFINE_TRACE_FN(name, NULL, NULL); -- cgit v1.2.3 From 3d56e331b6537671c66f1b510bed0f1e0331dfc8 Mon Sep 17 00:00:00 2001 From: Steven Rostedt Date: Wed, 2 Feb 2011 17:06:09 -0500 Subject: tracing: Replace syscall_meta_data struct array with pointer array Currently the syscall_meta structures for the syscall tracepoints are placed in the __syscall_metadata section, and at link time, the linker makes one large array of all these syscall metadata structures. On boot up, this array is read (much like the initcall sections) and the syscall data is processed. The problem is that there is no guarantee that gcc will place complex structures nicely together in an array format. Two structures in the same file may be placed awkwardly, because gcc has no clue that they are suppose to be in an array. A hack was used previous to force the alignment to 4, to pack the structures together. But this caused alignment issues with other architectures (sparc). Instead of packing the structures into an array, the structures' addresses are now put into the __syscall_metadata section. As pointers are always the natural alignment, gcc should always pack them tightly together (otherwise initcall, extable, etc would also fail). By having the pointers to the structures in the section, we can still iterate the trace_events without causing unnecessary alignment problems with other architectures, or depending on the current behaviour of gcc that will likely change in the future just to tick us kernel developers off a little more. The __syscall_metadata section is also moved into the .init.data section as it is now only needed at boot up. Suggested-by: David Miller Acked-by: David S. Miller Cc: Mathieu Desnoyers Signed-off-by: Steven Rostedt --- include/linux/syscalls.h | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) (limited to 'include/linux') diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 45508fec366d..98664db1be47 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -125,8 +125,7 @@ extern struct trace_event_functions enter_syscall_print_funcs; extern struct trace_event_functions exit_syscall_print_funcs; #define SYSCALL_TRACE_ENTER_EVENT(sname) \ - static struct syscall_metadata \ - __attribute__((__aligned__(4))) __syscall_meta_##sname; \ + static struct syscall_metadata __syscall_meta_##sname; \ static struct ftrace_event_call __used \ event_enter_##sname = { \ .name = "sys_enter"#sname, \ @@ -140,8 +139,7 @@ extern struct trace_event_functions exit_syscall_print_funcs; __TRACE_EVENT_FLAGS(enter_##sname, TRACE_EVENT_FL_CAP_ANY) #define SYSCALL_TRACE_EXIT_EVENT(sname) \ - static struct syscall_metadata \ - __attribute__((__aligned__(4))) __syscall_meta_##sname; \ + static struct syscall_metadata __syscall_meta_##sname; \ static struct ftrace_event_call __used \ event_exit_##sname = { \ .name = "sys_exit"#sname, \ @@ -158,8 +156,6 @@ extern struct trace_event_functions exit_syscall_print_funcs; SYSCALL_TRACE_ENTER_EVENT(sname); \ SYSCALL_TRACE_EXIT_EVENT(sname); \ static struct syscall_metadata __used \ - __attribute__((__aligned__(4))) \ - __attribute__((section("__syscalls_metadata"))) \ __syscall_meta_##sname = { \ .name = "sys"#sname, \ .nb_args = nb, \ @@ -168,14 +164,15 @@ extern struct trace_event_functions exit_syscall_print_funcs; .enter_event = &event_enter_##sname, \ .exit_event = &event_exit_##sname, \ .enter_fields = LIST_HEAD_INIT(__syscall_meta_##sname.enter_fields), \ - }; + }; \ + static struct syscall_metadata __used \ + __attribute__((section("__syscalls_metadata"))) \ + *__p_syscall_meta_##sname = &__syscall_meta_##sname; #define SYSCALL_DEFINE0(sname) \ SYSCALL_TRACE_ENTER_EVENT(_##sname); \ SYSCALL_TRACE_EXIT_EVENT(_##sname); \ static struct syscall_metadata __used \ - __attribute__((__aligned__(4))) \ - __attribute__((section("__syscalls_metadata"))) \ __syscall_meta__##sname = { \ .name = "sys_"#sname, \ .nb_args = 0, \ @@ -183,6 +180,9 @@ extern struct trace_event_functions exit_syscall_print_funcs; .exit_event = &event_exit__##sname, \ .enter_fields = LIST_HEAD_INIT(__syscall_meta__##sname.enter_fields), \ }; \ + static struct syscall_metadata __used \ + __attribute__((section("__syscalls_metadata"))) \ + *__p_syscall_meta_##sname = &__syscall_meta__##sname; \ asmlinkage long sys_##sname(void) #else #define SYSCALL_DEFINE0(name) asmlinkage long sys_##name(void) -- cgit v1.2.3 From 8211e46004518c977f70f2661da961d5ba617399 Mon Sep 17 00:00:00 2001 From: Stefan Achatz Date: Sun, 30 Jan 2011 13:38:25 +0100 Subject: HID: roccat: Add ioctl command to retreive report size from chardev Roccat chardev was reworked to support only a defined report size per device and this can be retreived by an ioctl now to enable future changes in report definitions. Header was moved/renamed from drivers/hid to include/linux for accessibility. Signed-off-by: Stefan Achatz Signed-off-by: Jiri Kosina --- include/linux/roccat.h | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 include/linux/roccat.h (limited to 'include/linux') diff --git a/include/linux/roccat.h b/include/linux/roccat.h new file mode 100644 index 000000000000..24e1ca01f9a0 --- /dev/null +++ b/include/linux/roccat.h @@ -0,0 +1,29 @@ +#ifndef __HID_ROCCAT_H +#define __HID_ROCCAT_H + +/* + * Copyright (c) 2010 Stefan Achatz + */ + +/* + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the Free + * Software Foundation; either version 2 of the License, or (at your option) + * any later version. + */ + +#include +#include + +#define ROCCATIOCGREPSIZE _IOR('H', 0xf1, int) + +#ifdef __KERNEL__ + +int roccat_connect(struct class *klass, struct hid_device *hid, + int report_size); +void roccat_disconnect(int minor); +int roccat_report_event(int minor, u8 const *data); + +#endif + +#endif -- cgit v1.2.3 From 5dc0c9835fb96c75c8dbf657393764bd0abbac04 Mon Sep 17 00:00:00 2001 From: Stefan Achatz Date: Thu, 3 Feb 2011 16:14:43 +0100 Subject: HID: roccat: Rename header roccat.h -> hid-roccat.h It was desired that the header roccat.h should be named hid-roccat.h Signed-off-by: Stefan Achatz Signed-off-by: Jiri Kosina --- include/linux/hid-roccat.h | 29 +++++++++++++++++++++++++++++ include/linux/roccat.h | 29 ----------------------------- 2 files changed, 29 insertions(+), 29 deletions(-) create mode 100644 include/linux/hid-roccat.h delete mode 100644 include/linux/roccat.h (limited to 'include/linux') diff --git a/include/linux/hid-roccat.h b/include/linux/hid-roccat.h new file mode 100644 index 000000000000..24e1ca01f9a0 --- /dev/null +++ b/include/linux/hid-roccat.h @@ -0,0 +1,29 @@ +#ifndef __HID_ROCCAT_H +#define __HID_ROCCAT_H + +/* + * Copyright (c) 2010 Stefan Achatz + */ + +/* + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the Free + * Software Foundation; either version 2 of the License, or (at your option) + * any later version. + */ + +#include +#include + +#define ROCCATIOCGREPSIZE _IOR('H', 0xf1, int) + +#ifdef __KERNEL__ + +int roccat_connect(struct class *klass, struct hid_device *hid, + int report_size); +void roccat_disconnect(int minor); +int roccat_report_event(int minor, u8 const *data); + +#endif + +#endif diff --git a/include/linux/roccat.h b/include/linux/roccat.h deleted file mode 100644 index 24e1ca01f9a0..000000000000 --- a/include/linux/roccat.h +++ /dev/null @@ -1,29 +0,0 @@ -#ifndef __HID_ROCCAT_H -#define __HID_ROCCAT_H - -/* - * Copyright (c) 2010 Stefan Achatz - */ - -/* - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the Free - * Software Foundation; either version 2 of the License, or (at your option) - * any later version. - */ - -#include -#include - -#define ROCCATIOCGREPSIZE _IOR('H', 0xf1, int) - -#ifdef __KERNEL__ - -int roccat_connect(struct class *klass, struct hid_device *hid, - int report_size); -void roccat_disconnect(int minor); -int roccat_report_event(int minor, u8 const *data); - -#endif - -#endif -- cgit v1.2.3 From 2f1522eccb09188f0008168f75420bc2fedc9cae Mon Sep 17 00:00:00 2001 From: Russ Gorby Date: Wed, 2 Feb 2011 12:56:58 -0800 Subject: serial: ifx6x60: expanded info available from platform data Some platform attributes (e.g. max_hz, use_dma) were being intuited from the modem type. These things should be specified by the platform data. Added max_hz, use_dma to ifx_modem_platform_data definition, replaced is_6160 w/ modem_type, and changed clients accordingly Signed-off-by: Russ Gorby Signed-off-by: Greg Kroah-Hartman --- include/linux/spi/ifx_modem.h | 19 ++++++++++++------- 1 file changed, 12 insertions(+), 7 deletions(-) (limited to 'include/linux') diff --git a/include/linux/spi/ifx_modem.h b/include/linux/spi/ifx_modem.h index a68f3b19d112..394fec9e7722 100644 --- a/include/linux/spi/ifx_modem.h +++ b/include/linux/spi/ifx_modem.h @@ -2,13 +2,18 @@ #define LINUX_IFX_MODEM_H struct ifx_modem_platform_data { - unsigned short rst_out; /* modem reset out */ - unsigned short pwr_on; /* power on */ - unsigned short rst_pmu; /* reset modem */ - unsigned short tx_pwr; /* modem power threshold */ - unsigned short srdy; /* SRDY */ - unsigned short mrdy; /* MRDY */ - unsigned short is_6160; /* Modem type */ + unsigned short rst_out; /* modem reset out */ + unsigned short pwr_on; /* power on */ + unsigned short rst_pmu; /* reset modem */ + unsigned short tx_pwr; /* modem power threshold */ + unsigned short srdy; /* SRDY */ + unsigned short mrdy; /* MRDY */ + unsigned char modem_type; /* Modem type */ + unsigned long max_hz; /* max SPI frequency */ + unsigned short use_dma:1; /* spi protocol driver supplies + dma-able addrs */ }; +#define IFX_MODEM_6160 1 +#define IFX_MODEM_6260 2 #endif -- cgit v1.2.3 From 9b99b7f84ea520d2ecaf816bde247a1ad07e454e Mon Sep 17 00:00:00 2001 From: Bart Van Assche Date: Sat, 1 Jan 2011 13:51:52 +0100 Subject: kobject: Add missing format attribute specifications Several functions in accept printf-style arguments. Some of these functions have been annotated with a format attribute declaration while others have not been annotated. Add a format attribute specification where it is missing. Signed-off-by: Bart Van Assche Signed-off-by: Greg Kroah-Hartman --- include/linux/kobject.h | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/kobject.h b/include/linux/kobject.h index 8f6d12151048..15e82c132f78 100644 --- a/include/linux/kobject.h +++ b/include/linux/kobject.h @@ -85,11 +85,13 @@ static inline const char *kobject_name(const struct kobject *kobj) extern void kobject_init(struct kobject *kobj, struct kobj_type *ktype); extern int __must_check kobject_add(struct kobject *kobj, struct kobject *parent, - const char *fmt, ...); + const char *fmt, ...) + __attribute__((format(printf, 3, 4))); extern int __must_check kobject_init_and_add(struct kobject *kobj, struct kobj_type *ktype, struct kobject *parent, - const char *fmt, ...); + const char *fmt, ...) + __attribute__((format(printf, 4, 5))); extern void kobject_del(struct kobject *kobj); @@ -226,6 +228,7 @@ static inline int kobject_uevent_env(struct kobject *kobj, static inline int add_uevent_var(struct kobj_uevent_env *env, const char *format, ...) + __attribute__((format(printf, 2, 3))) { return 0; } static inline int kobject_action_type(const char *buf, size_t count, -- cgit v1.2.3 From 8ba6ebf583f12da32036fc0f003ab4043e54692e Mon Sep 17 00:00:00 2001 From: Bart Van Assche Date: Sun, 23 Jan 2011 17:17:24 +0100 Subject: Dynamic debug: Add more flags Add flags that allow the user to specify via debugfs whether or not the module name, function name, line number and/or thread ID have to be included in the printed message. Signed-off-by: Bart Van Assche Cc: Greg Banks Cc: Konrad Rzeszutek Wilk Signed-off-by: Greg Kroah-Hartman --- include/linux/dynamic_debug.h | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/dynamic_debug.h b/include/linux/dynamic_debug.h index 1c70028f81f9..0c9653f11c18 100644 --- a/include/linux/dynamic_debug.h +++ b/include/linux/dynamic_debug.h @@ -31,6 +31,10 @@ struct _ddebug { * writes commands to /dynamic_debug/control */ #define _DPRINTK_FLAGS_PRINT (1<<0) /* printk() a message using the format */ +#define _DPRINTK_FLAGS_INCL_MODNAME (1<<1) +#define _DPRINTK_FLAGS_INCL_FUNCNAME (1<<2) +#define _DPRINTK_FLAGS_INCL_LINENO (1<<3) +#define _DPRINTK_FLAGS_INCL_TID (1<<4) #define _DPRINTK_FLAGS_DEFAULT 0 unsigned int flags:8; char enabled; @@ -42,6 +46,8 @@ int ddebug_add_module(struct _ddebug *tab, unsigned int n, #if defined(CONFIG_DYNAMIC_DEBUG) extern int ddebug_remove_module(const char *mod_name); +extern int __dynamic_pr_debug(struct _ddebug *descriptor, const char *fmt, ...) + __attribute__ ((format (printf, 2, 3))); #define dynamic_pr_debug(fmt, ...) do { \ static struct _ddebug descriptor \ @@ -50,7 +56,7 @@ extern int ddebug_remove_module(const char *mod_name); { KBUILD_MODNAME, __func__, __FILE__, fmt, __LINE__, \ _DPRINTK_FLAGS_DEFAULT }; \ if (unlikely(descriptor.enabled)) \ - printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__); \ + __dynamic_pr_debug(&descriptor, pr_fmt(fmt), ##__VA_ARGS__); \ } while (0) -- cgit v1.2.3 From 072fc8f0a8df9bf36392f15b729044cb2ad27332 Mon Sep 17 00:00:00 2001 From: Bob Liu Date: Wed, 26 Jan 2011 18:33:32 +0800 Subject: firmware_classs: change val uevent's type to bool Some place in firmware_class.c using "int uevent" define, but others use "bool uevent". This patch replace all int uevent define to bool. Signed-off-by: Bob Liu Acked-by: Dmitry Torokhov Signed-off-by: Greg Kroah-Hartman --- include/linux/firmware.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/firmware.h b/include/linux/firmware.h index 53d1e6c4f848..21b3e7588abd 100644 --- a/include/linux/firmware.h +++ b/include/linux/firmware.h @@ -39,7 +39,7 @@ struct builtin_fw { int request_firmware(const struct firmware **fw, const char *name, struct device *device); int request_firmware_nowait( - struct module *module, int uevent, + struct module *module, bool uevent, const char *name, struct device *device, gfp_t gfp, void *context, void (*cont)(const struct firmware *fw, void *context)); @@ -52,7 +52,7 @@ static inline int request_firmware(const struct firmware **fw, return -EINVAL; } static inline int request_firmware_nowait( - struct module *module, int uevent, + struct module *module, bool uevent, const char *name, struct device *device, gfp_t gfp, void *context, void (*cont)(const struct firmware *fw, void *context)) { -- cgit v1.2.3 From d33601644cd3b09afb2edd9474517edc441c8fad Mon Sep 17 00:00:00 2001 From: Nathan Fontenot Date: Thu, 20 Jan 2011 10:44:29 -0600 Subject: memory hotplug: Update phys_index to [start|end]_section_nr Update the 'phys_index' property of a the memory_block struct to be called start_section_nr, and add a end_section_nr property. The data tracked here is the same but the updated naming is more in line with what is stored here, namely the first and last section number that the memory block spans. The names presented to userspace remain the same, phys_index for start_section_nr and end_phys_index for end_section_nr, to avoid breaking anything in userspace. This also updates the node sysfs code to be aware of the new capability for a memory block to contain multiple memory sections and be aware of the memory block structure name changes (start_section_nr). This requires an additional parameter to unregister_mem_sect_under_nodes so that we know which memory section of the memory block to unregister. Signed-off-by: Nathan Fontenot Reviewed-by: Robin Holt Reviewed-by: KAMEZAWA Hiroyuki Signed-off-by: Greg Kroah-Hartman --- include/linux/memory.h | 3 ++- include/linux/node.h | 6 ++++-- 2 files changed, 6 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/memory.h b/include/linux/memory.h index 06c1fa0a5c7b..e1e3b2b84f85 100644 --- a/include/linux/memory.h +++ b/include/linux/memory.h @@ -21,7 +21,8 @@ #include struct memory_block { - unsigned long phys_index; + unsigned long start_section_nr; + unsigned long end_section_nr; unsigned long state; int section_count; diff --git a/include/linux/node.h b/include/linux/node.h index 1466945cc9ef..92370e22343c 100644 --- a/include/linux/node.h +++ b/include/linux/node.h @@ -39,7 +39,8 @@ extern int register_cpu_under_node(unsigned int cpu, unsigned int nid); extern int unregister_cpu_under_node(unsigned int cpu, unsigned int nid); extern int register_mem_sect_under_node(struct memory_block *mem_blk, int nid); -extern int unregister_mem_sect_under_nodes(struct memory_block *mem_blk); +extern int unregister_mem_sect_under_nodes(struct memory_block *mem_blk, + unsigned long phys_index); #ifdef CONFIG_HUGETLBFS extern void register_hugetlbfs_with_node(node_registration_func_t doregister, @@ -67,7 +68,8 @@ static inline int register_mem_sect_under_node(struct memory_block *mem_blk, { return 0; } -static inline int unregister_mem_sect_under_nodes(struct memory_block *mem_blk) +static inline int unregister_mem_sect_under_nodes(struct memory_block *mem_blk, + unsigned long phys_index) { return 0; } -- cgit v1.2.3 From e2d57766e6744f2956975dd2086d82957187b0f6 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Thu, 3 Feb 2011 17:59:32 -0800 Subject: net: Provide compat support for SIOCGETMIFCNT_IN6 and SIOCGETSGCNT_IN6. Signed-off-by: David S. Miller --- include/linux/mroute6.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/mroute6.h b/include/linux/mroute6.h index 6091ab77f388..9d2deb200f54 100644 --- a/include/linux/mroute6.h +++ b/include/linux/mroute6.h @@ -136,6 +136,7 @@ extern int ip6_mroute_setsockopt(struct sock *, int, char __user *, unsigned int extern int ip6_mroute_getsockopt(struct sock *, int, char __user *, int __user *); extern int ip6_mr_input(struct sk_buff *skb); extern int ip6mr_ioctl(struct sock *sk, int cmd, void __user *arg); +extern int ip6mr_compat_ioctl(struct sock *sk, unsigned int cmd, void __user *arg); extern int ip6_mr_init(void); extern void ip6_mr_cleanup(void); #else -- cgit v1.2.3 From 25a64ec1e7d0cfe172832d06a31215d458dfea7f Mon Sep 17 00:00:00 2001 From: Pete Zaitcev Date: Thu, 3 Feb 2011 22:43:48 -0700 Subject: fix comment spelling becausse => because Signed-off-by: Pete Zaitcev Signed-off-by: Jiri Kosina --- include/linux/mmzone.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 39c24ebe9cfd..52f96d78c0e8 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -477,7 +477,7 @@ unsigned long zone_nr_free_pages(struct zone *zone); #ifdef CONFIG_NUMA /* - * The NUMA zonelists are doubled becausse we need zonelists that restrict the + * The NUMA zonelists are doubled because we need zonelists that restrict the * allocations to a single node for GFP_THISNODE. * * [0] : Zonelist with fallback -- cgit v1.2.3 From c8ebae37034c0ead62eb4df8ef88e999ddb8d5cf Mon Sep 17 00:00:00 2001 From: Russell King Date: Tue, 11 Jan 2011 19:35:53 +0000 Subject: ARM: mmci: add dmaengine-based DMA support Based on a patch from Linus Walleij. Add dmaengine based support for DMA to the MMCI driver, using the Primecell DMA engine interface. The changes over Linus' driver are: - rename txsize_threshold to dmasize_threshold, as this reflects the purpose more. - use 'mmci_dma_' as the function prefix rather than 'dma_mmci_'. - clean up requesting of dma channels. - don't release a single channel twice when it's shared between tx and rx. - get rid of 'dma_enable' bool - instead check whether the channel is NULL. - detect incomplete DMA at the end of a transfer. Some DMA controllers (eg, PL08x) are unable to be configured for scatter DMA and also listen to all four DMA request signals [BREQ,SREQ,LBREQ,LSREQ] from the MMCI. They can do one or other but not both. As MMCI uses LBREQ/LSREQ for the final burst/words, PL08x does not transfer the last few words. - map and unmap DMA buffers using the DMA engine struct device, not the MMCI struct device - the DMA engine is doing the DMA transfer, not us. - avoid double-unmapping of the DMA buffers on MMCI data errors. - don't check for negative values from the dmaengine tx submission function - Dan says this must never fail. - use new dmaengine helper functions rather than using the ugly function pointers directly. - allow DMA code to be fully optimized away using dma_inprogress() which is defined to constant 0 if DMA engine support is disabled. - request maximum segment size from the DMA engine struct device and set this appropriately. - removed checking of buffer alignment - the DMA engine should deal with its own restrictions on buffer alignment, not the individual DMA engine users. - removed setting DMAREQCTL - this confuses some DMA controllers as it causes LBREQ to be asserted for the last seven transfers, rather than six SREQ and one LSREQ. - removed burst setting - the DMA controller should not burst past the transfer size required to complete the DMA operation. Tested-by: Linus Walleij Signed-off-by: Russell King --- include/linux/amba/mmci.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'include/linux') diff --git a/include/linux/amba/mmci.h b/include/linux/amba/mmci.h index f4ee9acc9721..f60227088b7b 100644 --- a/include/linux/amba/mmci.h +++ b/include/linux/amba/mmci.h @@ -6,6 +6,9 @@ #include +/* Just some dummy forwarding */ +struct dma_chan; + /** * struct mmci_platform_data - platform configuration for the MMCI * (also known as PL180) block. @@ -27,6 +30,17 @@ * @cd_invert: true if the gpio_cd pin value is active low * @capabilities: the capabilities of the block as implemented in * this platform, signify anything MMC_CAP_* from mmc/host.h + * @dma_filter: function used to select an apropriate RX and TX + * DMA channel to be used for DMA, if and only if you're deploying the + * generic DMA engine + * @dma_rx_param: parameter passed to the DMA allocation + * filter in order to select an apropriate RX channel. If + * there is a bidirectional RX+TX channel, then just specify + * this and leave dma_tx_param set to NULL + * @dma_tx_param: parameter passed to the DMA allocation + * filter in order to select an apropriate TX channel. If this + * is NULL the driver will attempt to use the RX channel as a + * bidirectional channel */ struct mmci_platform_data { unsigned int f_max; @@ -38,6 +52,9 @@ struct mmci_platform_data { int gpio_cd; bool cd_invert; unsigned long capabilities; + bool (*dma_filter)(struct dma_chan *chan, void *filter_param); + void *dma_rx_param; + void *dma_tx_param; }; #endif -- cgit v1.2.3 From 04bea68b2f0eeebb089ecc67b618795925268b4a Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Mon, 24 Jan 2011 09:58:55 +0530 Subject: of/pci: move of_irq_map_pci() into generic code There is a tiny difference between PPC32 and PPC64. Microblaze uses the PPC32 variant. Signed-off-by: Sebastian Andrzej Siewior [grant.likely@secretlab.ca: Added comment to #endif, moved documentation block to function implementation, fixed for non ppc and microblaze compiles] Signed-off-by: Grant Likely --- include/linux/of_pci.h | 9 +++++++++ 1 file changed, 9 insertions(+) create mode 100644 include/linux/of_pci.h (limited to 'include/linux') diff --git a/include/linux/of_pci.h b/include/linux/of_pci.h new file mode 100644 index 000000000000..85a27b650d76 --- /dev/null +++ b/include/linux/of_pci.h @@ -0,0 +1,9 @@ +#ifndef __OF_PCI_H +#define __OF_PCI_H + +#include + +struct pci_dev; +struct of_irq; +int of_irq_map_pci(struct pci_dev *pdev, struct of_irq *out_irq); +#endif -- cgit v1.2.3 From c8cf203a1d228fa001b95534f639ffb7a23d5386 Mon Sep 17 00:00:00 2001 From: Robert Morell Date: Wed, 26 Jan 2011 19:06:47 -0800 Subject: USB: HCD: Add usb_hcd prefix to exported functions The convention is to prefix symbols exported from the USB HCD core with "usb_hcd". This change makes unmap_urb_setup_for_dma() and unmap_urb_for_dma() consistent with that. Signed-off-by: Robert Morell Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- include/linux/usb/hcd.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h index dd6ee49a0844..395704bdf5cc 100644 --- a/include/linux/usb/hcd.h +++ b/include/linux/usb/hcd.h @@ -329,8 +329,8 @@ extern int usb_hcd_submit_urb(struct urb *urb, gfp_t mem_flags); extern int usb_hcd_unlink_urb(struct urb *urb, int status); extern void usb_hcd_giveback_urb(struct usb_hcd *hcd, struct urb *urb, int status); -extern void unmap_urb_setup_for_dma(struct usb_hcd *, struct urb *); -extern void unmap_urb_for_dma(struct usb_hcd *, struct urb *); +extern void usb_hcd_unmap_urb_setup_for_dma(struct usb_hcd *, struct urb *); +extern void usb_hcd_unmap_urb_for_dma(struct usb_hcd *, struct urb *); extern void usb_hcd_flush_endpoint(struct usb_device *udev, struct usb_host_endpoint *ep); extern void usb_hcd_disable_endpoint(struct usb_device *udev, -- cgit v1.2.3 From 2694a48d9007a8bdf1731c1b97d4942c9cc49296 Mon Sep 17 00:00:00 2001 From: Robert Morell Date: Wed, 26 Jan 2011 19:06:48 -0800 Subject: USB: HCD: Add driver hooks for (un)?map_urb_for_dma Provide optional hooks for the host controller driver to override the default DMA mapping and unmapping routines. In general, these shouldn't be necessary unless the host controller has special DMA requirements, such as alignment contraints. If these are not specified, the general usb_hcd_(un)?map_urb_for_dma functions will be used instead. Also, pass the status to unmap_urb_for_dma so it can know whether the DMA buffer has been overwritten. Finally, add a flag to be used by these implementations if they allocated a temporary buffer so it can be freed properly when unmapping. Signed-off-by: Robert Morell Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- include/linux/usb.h | 1 + include/linux/usb/hcd.h | 15 +++++++++++++++ 2 files changed, 16 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb.h b/include/linux/usb.h index bd69b65f3356..e63efeb378e3 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -976,6 +976,7 @@ extern int usb_disabled(void); #define URB_SETUP_MAP_SINGLE 0x00100000 /* Setup packet DMA mapped */ #define URB_SETUP_MAP_LOCAL 0x00200000 /* HCD-local setup packet */ #define URB_DMA_SG_COMBINED 0x00400000 /* S-G entries were combined */ +#define URB_ALIGNED_TEMP_BUFFER 0x00800000 /* Temp buffer was alloc'd */ struct usb_iso_packet_descriptor { unsigned int offset; diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h index 395704bdf5cc..92b96fe39307 100644 --- a/include/linux/usb/hcd.h +++ b/include/linux/usb/hcd.h @@ -233,6 +233,19 @@ struct hc_driver { int (*urb_dequeue)(struct usb_hcd *hcd, struct urb *urb, int status); + /* + * (optional) these hooks allow an HCD to override the default DMA + * mapping and unmapping routines. In general, they shouldn't be + * necessary unless the host controller has special DMA requirements, + * such as alignment contraints. If these are not specified, the + * general usb_hcd_(un)?map_urb_for_dma functions will be used instead + * (and it may be a good idea to call these functions in your HCD + * implementation) + */ + int (*map_urb_for_dma)(struct usb_hcd *hcd, struct urb *urb, + gfp_t mem_flags); + void (*unmap_urb_for_dma)(struct usb_hcd *hcd, struct urb *urb); + /* hw synch, freeing endpoint resources that urb_dequeue can't */ void (*endpoint_disable)(struct usb_hcd *hcd, struct usb_host_endpoint *ep); @@ -329,6 +342,8 @@ extern int usb_hcd_submit_urb(struct urb *urb, gfp_t mem_flags); extern int usb_hcd_unlink_urb(struct urb *urb, int status); extern void usb_hcd_giveback_urb(struct usb_hcd *hcd, struct urb *urb, int status); +extern int usb_hcd_map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb, + gfp_t mem_flags); extern void usb_hcd_unmap_urb_setup_for_dma(struct usb_hcd *, struct urb *); extern void usb_hcd_unmap_urb_for_dma(struct usb_hcd *, struct urb *); extern void usb_hcd_flush_endpoint(struct usb_device *udev, -- cgit v1.2.3 From 9a1b2e64020d41c577881952734fecd114af75f1 Mon Sep 17 00:00:00 2001 From: Marek Szyprowski Date: Fri, 28 Jan 2011 10:23:57 +0100 Subject: USB: gadget: export functionfs.h to the includes available for userspace To compile functionfs userspace driver one needs definitions from include/linux/usb/functionfs.h. This patch add this file to the list of includes exported to userspace. Signed-off-by: Marek Szyprowski Signed-off-by: Kyungmin Park Signed-off-by: Greg Kroah-Hartman --- include/linux/usb/Kbuild | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/usb/Kbuild b/include/linux/usb/Kbuild index 51410e0200cf..ed91fb62674b 100644 --- a/include/linux/usb/Kbuild +++ b/include/linux/usb/Kbuild @@ -2,6 +2,7 @@ header-y += audio.h header-y += cdc.h header-y += ch9.h header-y += ch11.h +header-y += functionfs.h header-y += gadgetfs.h header-y += midi.h header-y += g_printer.h -- cgit v1.2.3 From 8cf28f1f4de58c70e6af657bb46ca8f304c073d4 Mon Sep 17 00:00:00 2001 From: Pavankumar Kondeti Date: Fri, 4 Feb 2011 10:08:18 +0530 Subject: USB: Fix trout build failure with ci13xxx_msm gadget This patch fixes the below compilation errors. CC drivers/usb/gadget/ci13xxx_msm.o CC net/mac80211/led.o drivers/usb/gadget/ci13xxx_msm.c: In function 'ci13xxx_msm_notify_event': drivers/usb/gadget/ci13xxx_msm.c:42: error: 'USB_AHBBURST' undeclared (first use in this function) drivers/usb/gadget/ci13xxx_msm.c:42: error: (Each undeclared identifier is reported only once drivers/usb/gadget/ci13xxx_msm.c:42: error: for each function it appears in.) drivers/usb/gadget/ci13xxx_msm.c:43: error: 'USB_AHBMODE' undeclared (first use in this function) make[4]: *** [drivers/usb/gadget/ci13xxx_msm.o] Error 1 make[3]: *** [drivers/usb/gadget] Error 2 MSM USB driver is not supported on boards like trout (MSM7201) which has an external PHY. Signed-off-by: Pavankumar Kondeti Signed-off-by: Greg Kroah-Hartman --- include/linux/usb/msm_hsusb_hw.h | 4 ---- 1 file changed, 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/usb/msm_hsusb_hw.h b/include/linux/usb/msm_hsusb_hw.h index b92e17349c7b..7d1babbff071 100644 --- a/include/linux/usb/msm_hsusb_hw.h +++ b/include/linux/usb/msm_hsusb_hw.h @@ -16,12 +16,8 @@ #ifndef __LINUX_USB_GADGET_MSM72K_UDC_H__ #define __LINUX_USB_GADGET_MSM72K_UDC_H__ -#ifdef CONFIG_ARCH_MSM7X00A -#define USB_SBUSCFG (MSM_USB_BASE + 0x0090) -#else #define USB_AHBBURST (MSM_USB_BASE + 0x0090) #define USB_AHBMODE (MSM_USB_BASE + 0x0098) -#endif #define USB_CAPLENGTH (MSM_USB_BASE + 0x0100) /* 8 bit */ #define USB_USBCMD (MSM_USB_BASE + 0x0140) -- cgit v1.2.3 From 5c88b02196a99332dacf305c8757674dd7a303ff Mon Sep 17 00:00:00 2001 From: Pavan Savoy Date: Fri, 4 Feb 2011 02:23:09 -0600 Subject: drivers:misc: ti-st: register with channel IDs The architecture of shared transport had begun with individual protocols like bluetooth, fm and gps telling the shared transport what sort of protocol they are and then expecting the ST driver to parse the incoming data from chip and forward data only relevant to the protocol drivers. This change would mean each protocol drivers would also send information to ST driver as to how to intrepret their protocol data coming out of the chip. Signed-off-by: Pavan Savoy Signed-off-by: Greg Kroah-Hartman --- include/linux/ti_wilink_st.h | 40 ++++++++++++++++++++++++++++------------ 1 file changed, 28 insertions(+), 12 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ti_wilink_st.h b/include/linux/ti_wilink_st.h index 4c7be2263011..1674ca7ab86d 100644 --- a/include/linux/ti_wilink_st.h +++ b/include/linux/ti_wilink_st.h @@ -42,7 +42,7 @@ enum proto_type { ST_BT, ST_FM, ST_GPS, - ST_MAX, + ST_MAX_CHANNELS = 16, }; /** @@ -62,6 +62,17 @@ enum proto_type { * @priv_data: privdate data holder for the protocol drivers, sent * from the protocol drivers during registration, and sent back on * reg_complete_cb and recv. + * @chnl_id: channel id the protocol driver is interested in, the channel + * id is nothing but the 1st byte of the packet in UART frame. + * @max_frame_size: size of the largest frame the protocol can receive. + * @hdr_len: length of the header structure of the protocol. + * @offset_len_in_hdr: this provides the offset of the length field in the + * header structure of the protocol header, to assist ST to know + * how much to receive, if the data is split across UART frames. + * @len_size: whether the length field inside the header is 2 bytes + * or 1 byte. + * @reserve: the number of bytes ST needs to reserve in the skb being + * prepared for the protocol driver. */ struct st_proto_s { enum proto_type type; @@ -70,10 +81,17 @@ struct st_proto_s { void (*reg_complete_cb) (void *, char data); long (*write) (struct sk_buff *skb); void *priv_data; + + unsigned char chnl_id; + unsigned short max_frame_size; + unsigned char hdr_len; + unsigned char offset_len_in_hdr; + unsigned char len_size; + unsigned char reserve; }; extern long st_register(struct st_proto_s *); -extern long st_unregister(enum proto_type); +extern long st_unregister(struct st_proto_s *); /* @@ -114,6 +132,7 @@ extern long st_unregister(enum proto_type); * @rx_skb: the skb where all data for a protocol gets accumulated, * since tty might not call receive when a complete event packet * is received, the states, count and the skb needs to be maintained. + * @rx_chnl: the channel ID for which the data is getting accumalated for. * @txq: the list of skbs which needs to be sent onto the TTY. * @tx_waitq: if the chip is not in AWAKE state, the skbs needs to be queued * up in here, PM(WAKEUP_IND) data needs to be sent and then the skbs @@ -135,10 +154,11 @@ struct st_data_s { #define ST_TX_SENDING 1 #define ST_TX_WAKEUP 2 unsigned long tx_state; - struct st_proto_s *list[ST_MAX]; + struct st_proto_s *list[ST_MAX_CHANNELS]; unsigned long rx_state; unsigned long rx_count; struct sk_buff *rx_skb; + unsigned char rx_chnl; struct sk_buff_head txq, tx_waitq; spinlock_t lock; unsigned char protos_registered; @@ -243,12 +263,12 @@ struct kim_data_s { struct completion kim_rcvd, ldisc_installed; char resp_buffer[30]; const struct firmware *fw_entry; - long gpios[ST_MAX]; + long gpios[ST_MAX_CHANNELS]; unsigned long rx_state; unsigned long rx_count; struct sk_buff *rx_skb; - struct rfkill *rfkill[ST_MAX]; - enum proto_type rf_protos[ST_MAX]; + struct rfkill *rfkill[ST_MAX_CHANNELS]; + enum proto_type rf_protos[ST_MAX_CHANNELS]; struct st_data_s *core_data; struct chip_version version; }; @@ -338,12 +358,8 @@ struct hci_command { /* ST LL receiver states */ #define ST_W4_PACKET_TYPE 0 -#define ST_BT_W4_EVENT_HDR 1 -#define ST_BT_W4_ACL_HDR 2 -#define ST_BT_W4_SCO_HDR 3 -#define ST_BT_W4_DATA 4 -#define ST_FM_W4_EVENT_HDR 5 -#define ST_GPS_W4_EVENT_HDR 6 +#define ST_W4_HEADER 1 +#define ST_W4_DATA 2 /* ST LL state machines */ #define ST_LL_ASLEEP 0 -- cgit v1.2.3 From ec60d0ad20ff8796dc41b30a9dce485478ccd263 Mon Sep 17 00:00:00 2001 From: Pavan Savoy Date: Fri, 4 Feb 2011 02:23:10 -0600 Subject: drivers:misc: ti-st: move from rfkill to sysfs The communication between ST KIM and UIM was interfaced over the /dev/rfkill device node. Move the interface to a simpler less abusive sysfs entry mechanism and document it in Documentation/ABI/testing/ under sysfs-platform-kim. Shared transport driver would now read the UART details originally received by bootloader or firmware as platform data. The data read will be shared over sysfs entries for the user-space UIM or other n/w manager/plugins to be read, and assist the driver by opening up the UART, setting the baud-rate and installing the line discipline. Signed-off-by: Pavan Savoy Signed-off-by: Greg Kroah-Hartman --- include/linux/ti_wilink_st.h | 19 +++++++++++++++++-- 1 file changed, 17 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ti_wilink_st.h b/include/linux/ti_wilink_st.h index 1674ca7ab86d..010cda7287a0 100644 --- a/include/linux/ti_wilink_st.h +++ b/include/linux/ti_wilink_st.h @@ -206,8 +206,8 @@ void gps_chrdrv_stub_init(void); /* time in msec to wait for * line discipline to be installed */ -#define LDISC_TIME 500 -#define CMD_RESP_TIME 500 +#define LDISC_TIME 1000 +#define CMD_RESP_TIME 800 #define MAKEWORD(a, b) ((unsigned short)(((unsigned char)(a)) \ | ((unsigned short)((unsigned char)(b))) << 8)) @@ -230,6 +230,7 @@ struct chip_version { unsigned short maj_ver; }; +#define UART_DEV_NAME_LEN 32 /** * struct kim_data_s - the KIM internal data, embedded as the * platform's drv data. One for each ST device in the system. @@ -271,6 +272,10 @@ struct kim_data_s { enum proto_type rf_protos[ST_MAX_CHANNELS]; struct st_data_s *core_data; struct chip_version version; + unsigned char ldisc_install; + unsigned char dev_name[UART_DEV_NAME_LEN]; + unsigned char flow_cntrl; + unsigned long baud_rate; }; /** @@ -413,4 +418,14 @@ struct gps_event_hdr { u16 plen; } __attribute__ ((packed)); +/* platform data */ +struct ti_st_plat_data { + long gpios[ST_MAX_CHANNELS]; /* BT, FM and GPS */ + unsigned char dev_name[UART_DEV_NAME_LEN]; /* uart name */ + unsigned char flow_cntrl; /* flow control flag */ + unsigned long baud_rate; + int (*suspend)(struct platform_device *, pm_message_t); + int (*resume)(struct platform_device *); +}; + #endif /* TI_WILINK_ST_H */ -- cgit v1.2.3 From ef04d121f030329aae0c2d3ec22beea0c5cbcfd3 Mon Sep 17 00:00:00 2001 From: Pavan Savoy Date: Fri, 4 Feb 2011 02:23:13 -0600 Subject: drivers:misc: ti-st: firmware download optimization To fasten the process of firmware download, the chip allows disabling of the command complete event generation from host. In these cases, only few very essential commands would have the command complete events and hence the wait associated with them. So now the driver would wait for a command complete event, only when it comes across a wait event during firmware parsing. This would also mean we need to skip not just the change baud rate command but also the wait for it. Signed-off-by: Pavan Savoy Signed-off-by: Greg Kroah-Hartman --- include/linux/ti_wilink_st.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ti_wilink_st.h b/include/linux/ti_wilink_st.h index 010cda7287a0..7885a779c588 100644 --- a/include/linux/ti_wilink_st.h +++ b/include/linux/ti_wilink_st.h @@ -166,6 +166,11 @@ struct st_data_s { void *kim_data; }; +/* + * wrapper around tty->ops->write_room to check + * availability during firmware download + */ +int st_get_uart_wr_room(struct st_data_s *st_gdata); /** * st_int_write - * point this to tty->driver->write or tty->ops->write @@ -208,6 +213,7 @@ void gps_chrdrv_stub_init(void); */ #define LDISC_TIME 1000 #define CMD_RESP_TIME 800 +#define CMD_WR_TIME 5000 #define MAKEWORD(a, b) ((unsigned short)(((unsigned char)(a)) \ | ((unsigned short)((unsigned char)(b))) << 8)) -- cgit v1.2.3 From 781a7395d239dbdb59738ca7fe08e71641bf583c Mon Sep 17 00:00:00 2001 From: Pavan Savoy Date: Fri, 4 Feb 2011 02:23:15 -0600 Subject: drivers:misc: ti-st: remove multiple gpio handling TI shared transport driver previously intended to expose rfkill entries for each of the protocol gpio that the chip would have. However now in case such gpios exist, which requires to be enabled for a specific protocol, the responsibility lay on protocol driver. This patch removes the request/free of multiple gpios, rfkill struct references and also removes the chip_toggle function. Signed-off-by: Pavan Savoy Signed-off-by: Greg Kroah-Hartman --- include/linux/ti_wilink_st.h | 19 ++----------------- 1 file changed, 2 insertions(+), 17 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ti_wilink_st.h b/include/linux/ti_wilink_st.h index 7885a779c588..7071ec5d0118 100644 --- a/include/linux/ti_wilink_st.h +++ b/include/linux/ti_wilink_st.h @@ -25,15 +25,6 @@ #ifndef TI_WILINK_ST_H #define TI_WILINK_ST_H -/** - * enum kim_gpio_state - Few protocols such as FM have ACTIVE LOW - * gpio states for their chip/core enable gpios - */ -enum kim_gpio_state { - KIM_GPIO_INACTIVE, - KIM_GPIO_ACTIVE, -}; - /** * enum proto-type - The protocol on WiLink chips which share a * common physical interface like UART. @@ -252,14 +243,11 @@ struct chip_version { * the ldisc was properly installed. * @resp_buffer: data buffer for the .bts fw file name. * @fw_entry: firmware class struct to request/release the fw. - * @gpios: the list of core/chip enable gpios for BT, FM and GPS cores. * @rx_state: the rx state for kim's receive func during fw download. * @rx_count: the rx count for the kim's receive func during fw download. * @rx_skb: all of fw data might not come at once, and hence data storage for * whole of the fw response, only HCI_EVENTs and hence diff from ST's * response. - * @rfkill: rfkill data for each of the cores to be registered with rfkill. - * @rf_protos: proto types of the data registered with rfkill sub-system. * @core_data: ST core's data, which mainly is the tty's disc_data * @version: chip version available via a sysfs entry. * @@ -270,12 +258,10 @@ struct kim_data_s { struct completion kim_rcvd, ldisc_installed; char resp_buffer[30]; const struct firmware *fw_entry; - long gpios[ST_MAX_CHANNELS]; + long nshutdown; unsigned long rx_state; unsigned long rx_count; struct sk_buff *rx_skb; - struct rfkill *rfkill[ST_MAX_CHANNELS]; - enum proto_type rf_protos[ST_MAX_CHANNELS]; struct st_data_s *core_data; struct chip_version version; unsigned char ldisc_install; @@ -293,7 +279,6 @@ long st_kim_start(void *); long st_kim_stop(void *); void st_kim_recv(void *, const unsigned char *, long count); -void st_kim_chip_toggle(enum proto_type, enum kim_gpio_state); void st_kim_complete(void *); void kim_st_list_protocols(struct st_data_s *, void *); @@ -426,7 +411,7 @@ struct gps_event_hdr { /* platform data */ struct ti_st_plat_data { - long gpios[ST_MAX_CHANNELS]; /* BT, FM and GPS */ + long nshutdown_gpio; unsigned char dev_name[UART_DEV_NAME_LEN]; /* uart name */ unsigned char flow_cntrl; /* flow control flag */ unsigned long baud_rate; -- cgit v1.2.3 From 872434d69c644b8aa5088b835598dc3cd9832aff Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Sat, 5 Feb 2011 16:25:25 +0100 Subject: genirq: Add missing status flags to modification mask The mask which filters out the valid bits which can be set via irq_modify_status() is missing IRQ_NO_BALANCING, which breaks UV. Add IRQ_PER_CPU as well to avoid another one line patch for 39. Signed-off-by: Thomas Gleixner --- include/linux/irq.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index abde2527c699..80fcb53057bc 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -74,7 +74,8 @@ typedef void (*irq_flow_handler_t)(unsigned int irq, #define IRQF_MODIFY_MASK \ (IRQ_TYPE_SENSE_MASK | IRQ_NOPROBE | IRQ_NOREQUEST | \ - IRQ_NOAUTOEN | IRQ_MOVE_PCNTXT | IRQ_LEVEL) + IRQ_NOAUTOEN | IRQ_MOVE_PCNTXT | IRQ_LEVEL | IRQ_NO_BALANCING | \ + IRQ_PER_CPU) #ifdef CONFIG_IRQ_PER_CPU # define CHECK_IRQ_PER_CPU(var) ((var) & IRQ_PER_CPU) -- cgit v1.2.3 From 4a3d27e98a7f2682e96d6f863752e0424b00d691 Mon Sep 17 00:00:00 2001 From: Steven Rostedt Date: Thu, 27 Jan 2011 23:19:49 -0500 Subject: tracing/filter: Move MAX_FILTER_PRED to local tracing directory The MAX_FILTER_PRED is only needed by the kernel/trace/*.c files. Move it to kernel/trace/trace.h. Cc: Tom Zanussi Signed-off-by: Steven Rostedt --- include/linux/ftrace_event.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/ftrace_event.h b/include/linux/ftrace_event.h index 47e3997f7b5c..1a99e7939c2b 100644 --- a/include/linux/ftrace_event.h +++ b/include/linux/ftrace_event.h @@ -208,7 +208,6 @@ struct ftrace_event_call { #define PERF_MAX_TRACE_SIZE 2048 -#define MAX_FILTER_PRED 32 #define MAX_FILTER_STR_VAL 256 /* Should handle KSYM_SYMBOL_LEN */ extern void destroy_preds(struct ftrace_event_call *call); -- cgit v1.2.3 From ba976970c79fd2fbfe1a4b3b6766a318f4eb9d4c Mon Sep 17 00:00:00 2001 From: Ian Munsie Date: Thu, 3 Feb 2011 14:27:20 +1100 Subject: tracing/syscalls: Don't add events for unmapped syscalls FTRACE_SYSCALLS would create events for each and every system call, even if it had failed to map the system call's name with it's number. This resulted in a number of events being created that would not behave as expected. This could happen, for example, on architectures who's symbol names are unusual and will not match the system call name. It could also happen with system calls which were mapped to sys_ni_syscall. This patch changes the default system call number in the metadata to -1. If the system call name from the metadata is not successfully mapped to a system call number during boot, than the event initialisation routine will now return an error, preventing the event from being created. Signed-off-by: Ian Munsie LKML-Reference: <1296703645-18718-2-git-send-email-imunsie@au1.ibm.com> Signed-off-by: Steven Rostedt --- include/linux/syscalls.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 98664db1be47..8e8968e74544 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -158,6 +158,7 @@ extern struct trace_event_functions exit_syscall_print_funcs; static struct syscall_metadata __used \ __syscall_meta_##sname = { \ .name = "sys"#sname, \ + .syscall_nr = -1, /* Filled in at boot */ \ .nb_args = nb, \ .types = types_##sname, \ .args = args_##sname, \ @@ -175,6 +176,7 @@ extern struct trace_event_functions exit_syscall_print_funcs; static struct syscall_metadata __used \ __syscall_meta__##sname = { \ .name = "sys_"#sname, \ + .syscall_nr = -1, /* Filled in at boot */ \ .nb_args = 0, \ .enter_event = &event_enter__##sname, \ .exit_event = &event_exit__##sname, \ -- cgit v1.2.3 From dc5f219e88294b93009eef946251251ffffb6d60 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Fri, 4 Feb 2011 13:19:20 +0100 Subject: genirq: Add IRQF_FORCE_RESUME Xen needs to reenable interrupts which are marked IRQF_NO_SUSPEND in the resume path. Add a flag to force the reenabling in the resume code. Tested-and-acked-by: Ian Campbell Signed-off-by: Thomas Gleixner --- include/linux/interrupt.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h index 55e0d4253e49..d746da19c6a2 100644 --- a/include/linux/interrupt.h +++ b/include/linux/interrupt.h @@ -55,7 +55,7 @@ * Used by threaded interrupts which need to keep the * irq line disabled until the threaded handler has been run. * IRQF_NO_SUSPEND - Do not disable this IRQ during suspend - * + * IRQF_FORCE_RESUME - Force enable it on resume even if IRQF_NO_SUSPEND is set */ #define IRQF_DISABLED 0x00000020 #define IRQF_SAMPLE_RANDOM 0x00000040 @@ -67,6 +67,7 @@ #define IRQF_IRQPOLL 0x00001000 #define IRQF_ONESHOT 0x00002000 #define IRQF_NO_SUSPEND 0x00004000 +#define IRQF_FORCE_RESUME 0x00008000 #define IRQF_TIMER (__IRQF_TIMER | IRQF_NO_SUSPEND) -- cgit v1.2.3 From c13ff2ff3ad1479f222e18f9caba3db5af68d549 Mon Sep 17 00:00:00 2001 From: Seth Heasley Date: Mon, 10 Jan 2011 13:08:37 -0800 Subject: PCI/lpc: irq and pci_ids patch for Intel DH89xxCC DeviceIDs This patch adds the LPC Controller DeviceIDs for the Intel DH89xxCC PCH. The code for capturing ranges of LPC Controller DeviceIDs has also been updated. Acked-by: Jean Delvare Signed-off-by: Seth Heasley Signed-off-by: Jesse Barnes --- include/linux/pci_ids.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h index 3adb06ebf841..46f23999458d 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -2480,6 +2480,9 @@ #define PCI_DEVICE_ID_INTEL_PATSBURG_SMBUS 0x1d22 #define PCI_DEVICE_ID_INTEL_PATSBURG_LPC_0 0x1d40 #define PCI_DEVICE_ID_INTEL_PATSBURG_LPC_1 0x1d41 +#define PCI_DEVICE_ID_INTEL_DH89XXCC_LPC_MIN 0x2310 +#define PCI_DEVICE_ID_INTEL_DH89XXCC_LPC_MAX 0x231f +#define PCI_DEVICE_ID_INTEL_DH89XXCC_SMBUS 0x2330 #define PCI_DEVICE_ID_INTEL_82801AA_0 0x2410 #define PCI_DEVICE_ID_INTEL_82801AA_1 0x2411 #define PCI_DEVICE_ID_INTEL_82801AA_3 0x2413 -- cgit v1.2.3 From 5084f89303c0a138f66bf74662753f46878989bb Mon Sep 17 00:00:00 2001 From: Amit Shah Date: Mon, 31 Jan 2011 13:06:37 +0530 Subject: virtio: console: Update Copyright Signed-off-by: Amit Shah Signed-off-by: Rusty Russell --- include/linux/virtio_console.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/virtio_console.h b/include/linux/virtio_console.h index a85064db8f94..e4d333543a33 100644 --- a/include/linux/virtio_console.h +++ b/include/linux/virtio_console.h @@ -7,7 +7,8 @@ * This header, excluding the #ifdef __KERNEL__ part, is BSD licensed so * anyone can use the definitions to implement compatible drivers/servers. * - * Copyright (C) Red Hat, Inc., 2009, 2010 + * Copyright (C) Red Hat, Inc., 2009, 2010, 2011 + * Copyright (C) Amit Shah , 2009, 2010, 2011 */ /* Feature bits */ -- cgit v1.2.3 From 3a9dda7602e566014a859faaf8490e6454683ab1 Mon Sep 17 00:00:00 2001 From: Alexey Orishko Date: Mon, 7 Feb 2011 09:45:09 +0000 Subject: CDC NCM errata updates for cdc.h Changes are based on the following documents: - CDC NCM errata: http://www.usb.org/developers/devclass_docs/NCM10_012011.zip - CDC and WMC errata link: http://www.usb.org/developers/devclass_docs/CDC1.2_WMC1.1_012011.zip Signed-off-by: Alexey Orishko Acked-by: Greg Kroah-Hartman Signed-off-by: David S. Miller --- include/linux/usb/cdc.h | 23 ++++++++++++++++++----- 1 file changed, 18 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/usb/cdc.h b/include/linux/usb/cdc.h index 5e86dc771da4..81a927930bfd 100644 --- a/include/linux/usb/cdc.h +++ b/include/linux/usb/cdc.h @@ -89,7 +89,7 @@ struct usb_cdc_acm_descriptor { #define USB_CDC_COMM_FEATURE 0x01 #define USB_CDC_CAP_LINE 0x02 -#define USB_CDC_CAP_BRK 0x04 +#define USB_CDC_CAP_BRK 0x04 #define USB_CDC_CAP_NOTIFY 0x08 /* "Union Functional Descriptor" from CDC spec 5.2.3.8 */ @@ -271,6 +271,11 @@ struct usb_cdc_notification { __le16 wLength; } __attribute__ ((packed)); +struct usb_cdc_speed_change { + __le32 DLBitRRate; /* contains the downlink bit rate (IN pipe) */ + __le32 ULBitRate; /* contains the uplink bit rate (OUT pipe) */ +} __attribute__ ((packed)); + /*-------------------------------------------------------------------------*/ /* @@ -292,7 +297,7 @@ struct usb_cdc_ncm_ntb_parameters { __le16 wNdpOutDivisor; __le16 wNdpOutPayloadRemainder; __le16 wNdpOutAlignment; - __le16 wPadding2; + __le16 wNtbOutMaxDatagrams; } __attribute__ ((packed)); /* @@ -307,7 +312,7 @@ struct usb_cdc_ncm_nth16 { __le16 wHeaderLength; __le16 wSequence; __le16 wBlockLength; - __le16 wFpIndex; + __le16 wNdpIndex; } __attribute__ ((packed)); struct usb_cdc_ncm_nth32 { @@ -315,7 +320,7 @@ struct usb_cdc_ncm_nth32 { __le16 wHeaderLength; __le16 wSequence; __le32 dwBlockLength; - __le32 dwFpIndex; + __le32 dwNdpIndex; } __attribute__ ((packed)); /* @@ -337,7 +342,7 @@ struct usb_cdc_ncm_dpe16 { struct usb_cdc_ncm_ndp16 { __le32 dwSignature; __le16 wLength; - __le16 wNextFpIndex; + __le16 wNextNdpIndex; struct usb_cdc_ncm_dpe16 dpe16[0]; } __attribute__ ((packed)); @@ -375,6 +380,7 @@ struct usb_cdc_ncm_ndp32 { #define USB_CDC_NCM_NCAP_ENCAP_COMMAND (1 << 2) #define USB_CDC_NCM_NCAP_MAX_DATAGRAM_SIZE (1 << 3) #define USB_CDC_NCM_NCAP_CRC_MODE (1 << 4) +#define USB_CDC_NCM_NCAP_NTB_INPUT_SIZE (1 << 5) /* CDC NCM subclass Table 6-3: NTB Parameter Structure */ #define USB_CDC_NCM_NTB16_SUPPORTED (1 << 0) @@ -392,6 +398,13 @@ struct usb_cdc_ncm_ndp32 { #define USB_CDC_NCM_NTB_MIN_IN_SIZE 2048 #define USB_CDC_NCM_NTB_MIN_OUT_SIZE 2048 +/* NTB Input Size Structure */ +struct usb_cdc_ncm_ndp_input_size { + __le32 dwNtbInMaxSize; + __le16 wNtbInMaxDatagrams; + __le16 wReserved; +} __attribute__ ((packed)); + /* CDC NCM subclass 6.2.11 SetCrcMode */ #define USB_CDC_NCM_CRC_NOT_APPENDED 0x00 #define USB_CDC_NCM_CRC_APPENDED 0x01 -- cgit v1.2.3 From fa9921e46fd52b78070dc67ce0d27ec301a90410 Mon Sep 17 00:00:00 2001 From: Nicolas Dichtel Date: Wed, 2 Feb 2011 06:29:02 +0000 Subject: ipsec: allow to align IPv4 AH on 32 bits The Linux IPv4 AH stack aligns the AH header on a 64 bit boundary (like in IPv6). This is not RFC compliant (see RFC4302, Section 3.3.3.2.1), it should be aligned on 32 bits. For most of the authentication algorithms, the ICV size is 96 bits. The AH header alignment on 32 or 64 bits gives the same results. However for SHA-256-128 for instance, the wrong 64 bit alignment results in adding useless padding in IPv4 AH, which is forbidden by the RFC. To avoid breaking backward compatibility, we use a new flag (XFRM_STATE_ALIGN4) do change original behavior. Initial patch from Dang Hongwu and Christophe Gouault . Signed-off-by: Nicolas Dichtel Signed-off-by: David S. Miller --- include/linux/xfrm.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/xfrm.h b/include/linux/xfrm.h index 930fdd2de79c..b93d6f598085 100644 --- a/include/linux/xfrm.h +++ b/include/linux/xfrm.h @@ -350,6 +350,7 @@ struct xfrm_usersa_info { #define XFRM_STATE_WILDRECV 8 #define XFRM_STATE_ICMP 16 #define XFRM_STATE_AF_UNSPEC 32 +#define XFRM_STATE_ALIGN4 64 }; struct xfrm_usersa_id { -- cgit v1.2.3 From f4d5c029bd6731baac0937324cef0f746e7d5ea7 Mon Sep 17 00:00:00 2001 From: Lai Jiangshan Date: Wed, 26 Jan 2011 16:49:00 +0800 Subject: tracing: Compile time initialization for event flags value Compile time initialization is better than runtime initialization. Remove many early_initcall()s and many trace_init_flags_##name()s. Acked-by: Frederic Weisbecker Signed-off-by: Lai Jiangshan LKML-Reference: <4D3FDFFC.6030304@cn.fujitsu.com> Signed-off-by: Steven Rostedt --- include/linux/syscalls.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 8e8968e74544..a17fcea2ca58 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -132,11 +132,11 @@ extern struct trace_event_functions exit_syscall_print_funcs; .class = &event_class_syscall_enter, \ .event.funcs = &enter_syscall_print_funcs, \ .data = (void *)&__syscall_meta_##sname,\ + .flags = TRACE_EVENT_FL_CAP_ANY, \ }; \ static struct ftrace_event_call __used \ __attribute__((section("_ftrace_events"))) \ - *__event_enter_##sname = &event_enter_##sname; \ - __TRACE_EVENT_FLAGS(enter_##sname, TRACE_EVENT_FL_CAP_ANY) + *__event_enter_##sname = &event_enter_##sname; #define SYSCALL_TRACE_EXIT_EVENT(sname) \ static struct syscall_metadata __syscall_meta_##sname; \ @@ -146,11 +146,11 @@ extern struct trace_event_functions exit_syscall_print_funcs; .class = &event_class_syscall_exit, \ .event.funcs = &exit_syscall_print_funcs, \ .data = (void *)&__syscall_meta_##sname,\ + .flags = TRACE_EVENT_FL_CAP_ANY, \ }; \ static struct ftrace_event_call __used \ __attribute__((section("_ftrace_events"))) \ - *__event_exit_##sname = &event_exit_##sname; \ - __TRACE_EVENT_FLAGS(exit_##sname, TRACE_EVENT_FL_CAP_ANY) + *__event_exit_##sname = &event_exit_##sname; #define SYSCALL_METADATA(sname, nb) \ SYSCALL_TRACE_ENTER_EVENT(sname); \ -- cgit v1.2.3 From 4149efb22da66e326fc48baf80d628834509f7f0 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 8 Feb 2011 10:39:03 +0100 Subject: workqueue: add system_freezeable_wq Add system wide freezeable workqueue. Signed-off-by: Tejun Heo Acked-by: Dmitry Torokhov Cc: "Rafael J. Wysocki" --- include/linux/workqueue.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/workqueue.h b/include/linux/workqueue.h index 1ac11586a2f5..de6a755befac 100644 --- a/include/linux/workqueue.h +++ b/include/linux/workqueue.h @@ -286,11 +286,15 @@ enum { * any specific CPU, not concurrency managed, and all queued works are * executed immediately as long as max_active limit is not reached and * resources are available. + * + * system_freezeable_wq is equivalent to system_wq except that it's + * freezeable. */ extern struct workqueue_struct *system_wq; extern struct workqueue_struct *system_long_wq; extern struct workqueue_struct *system_nrt_wq; extern struct workqueue_struct *system_unbound_wq; +extern struct workqueue_struct *system_freezeable_wq; extern struct workqueue_struct * __alloc_workqueue_key(const char *name, unsigned int flags, int max_active, -- cgit v1.2.3 From 6d1d4ea4a82f8c17a3ff7c2f677bc3d41ea7484b Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Tue, 8 Feb 2011 23:32:17 +0100 Subject: ssb: extract boardflags2 for SPROMs rev 4 and 5 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Rafał Miłecki Signed-off-by: John W. Linville --- include/linux/ssb/ssb_regs.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ssb/ssb_regs.h b/include/linux/ssb/ssb_regs.h index 489f7b6d61c5..df9211a84634 100644 --- a/include/linux/ssb/ssb_regs.h +++ b/include/linux/ssb/ssb_regs.h @@ -268,6 +268,8 @@ /* SPROM Revision 4 */ #define SSB_SPROM4_BFLLO 0x0044 /* Boardflags (low 16 bits) */ #define SSB_SPROM4_BFLHI 0x0046 /* Board Flags Hi */ +#define SSB_SPROM4_BFL2LO 0x0048 /* Board flags 2 (low 16 bits) */ +#define SSB_SPROM4_BFL2HI 0x004A /* Board flags 2 Hi */ #define SSB_SPROM4_IL0MAC 0x004C /* 6 byte MAC address for a/b/g/n */ #define SSB_SPROM4_CCODE 0x0052 /* Country Code (2 bytes) */ #define SSB_SPROM4_GPIOA 0x0056 /* Gen. Purpose IO # 0 and 1 */ @@ -358,6 +360,8 @@ #define SSB_SPROM5_CCODE 0x0044 /* Country Code (2 bytes) */ #define SSB_SPROM5_BFLLO 0x004A /* Boardflags (low 16 bits) */ #define SSB_SPROM5_BFLHI 0x004C /* Board Flags Hi */ +#define SSB_SPROM5_BFL2LO 0x004E /* Board flags 2 (low 16 bits) */ +#define SSB_SPROM5_BFL2HI 0x0050 /* Board flags 2 Hi */ #define SSB_SPROM5_IL0MAC 0x0052 /* 6 byte MAC address for a/b/g/n */ #define SSB_SPROM5_GPIOA 0x0076 /* Gen. Purpose IO # 0 and 1 */ #define SSB_SPROM5_GPIOA_P0 0x00FF /* Pin 0 */ -- cgit v1.2.3 From a68a27b6f2354273bacc39c3dd06456edb202230 Mon Sep 17 00:00:00 2001 From: Mimi Zohar Date: Tue, 2 Nov 2010 10:10:56 -0400 Subject: IMA: convert i_readcount to atomic Convert the inode's i_readcount from an unsigned int to atomic. Signed-off-by: Mimi Zohar Acked-by: Eric Paris --- include/linux/fs.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index baf3e556ff0e..ef85322863b9 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -794,8 +794,7 @@ struct inode { #endif #ifdef CONFIG_IMA - /* protected by i_lock */ - unsigned int i_readcount; /* struct files open RO */ + atomic_t i_readcount; /* struct files open RO */ #endif atomic_t i_writecount; #ifdef CONFIG_SECURITY -- cgit v1.2.3 From a5c96ebf1d71df0c5fb77ab58c9aeb307cf02372 Mon Sep 17 00:00:00 2001 From: Mimi Zohar Date: Tue, 2 Nov 2010 10:11:37 -0400 Subject: IMA: define readcount functions Define i_readcount_inc/dec() functions to be called from the VFS layer. Changelog: - renamed iget/iput_readcount to i_readcount_inc/dec (Dave Chinner's suggestion) - removed i_lock in iput_readcount() (based on comments:Dave Chinner,Eric Paris) Signed-off-by: Mimi Zohar Acked-by: Eric Paris --- include/linux/fs.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index ef85322863b9..a3e8f02b727d 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2186,6 +2186,26 @@ static inline void allow_write_access(struct file *file) if (file) atomic_inc(&file->f_path.dentry->d_inode->i_writecount); } +#ifdef CONFIG_IMA +static inline void i_readcount_dec(struct inode *inode) +{ + BUG_ON(!atomic_read(&inode->i_readcount)); + atomic_dec(&inode->i_readcount); +} +static inline void i_readcount_inc(struct inode *inode) +{ + atomic_inc(&inode->i_readcount); +} +#else +static inline void i_readcount_dec(struct inode *inode) +{ + return; +} +static inline void i_readcount_inc(struct inode *inode) +{ + return; +} +#endif extern int do_pipe_flags(int *, int); extern struct file *create_read_pipe(struct file *f, int flags); extern struct file *create_write_pipe(int flags); -- cgit v1.2.3 From 890275b5eb79e9933d12290473eab9ac38da0051 Mon Sep 17 00:00:00 2001 From: Mimi Zohar Date: Tue, 2 Nov 2010 10:13:07 -0400 Subject: IMA: maintain i_readcount in the VFS layer ima_counts_get() updated the readcount and invalidated the PCR, as necessary. Only update the i_readcount in the VFS layer. Move the PCR invalidation checks to ima_file_check(), where it belongs. Maintaining the i_readcount in the VFS layer, will allow other subsystems to use i_readcount. Signed-off-by: Mimi Zohar Acked-by: Eric Paris --- include/linux/ima.h | 6 ------ 1 file changed, 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ima.h b/include/linux/ima.h index 975837e7d6c0..09e6e62f9953 100644 --- a/include/linux/ima.h +++ b/include/linux/ima.h @@ -20,7 +20,6 @@ extern void ima_inode_free(struct inode *inode); extern int ima_file_check(struct file *file, int mask); extern void ima_file_free(struct file *file); extern int ima_file_mmap(struct file *file, unsigned long prot); -extern void ima_counts_get(struct file *file); #else static inline int ima_bprm_check(struct linux_binprm *bprm) @@ -53,10 +52,5 @@ static inline int ima_file_mmap(struct file *file, unsigned long prot) return 0; } -static inline void ima_counts_get(struct file *file) -{ - return; -} - #endif /* CONFIG_IMA_H */ #endif /* _LINUX_IMA_H */ -- cgit v1.2.3 From 6037b715d6fab139742c3df8851db4c823081561 Mon Sep 17 00:00:00 2001 From: Chris Wright Date: Wed, 9 Feb 2011 22:11:51 -0800 Subject: security: add cred argument to security_capable() Expand security_capable() to include cred, so that it can be usable in a wider range of call sites. Signed-off-by: Chris Wright Acked-by: Serge Hallyn Signed-off-by: James Morris --- include/linux/security.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/security.h b/include/linux/security.h index c642bb8b8f5a..b2b7f9749f5e 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -1662,7 +1662,7 @@ int security_capset(struct cred *new, const struct cred *old, const kernel_cap_t *effective, const kernel_cap_t *inheritable, const kernel_cap_t *permitted); -int security_capable(int cap); +int security_capable(const struct cred *cred, int cap); int security_real_capable(struct task_struct *tsk, int cap); int security_real_capable_noaudit(struct task_struct *tsk, int cap); int security_sysctl(struct ctl_table *table, int op); @@ -1856,9 +1856,9 @@ static inline int security_capset(struct cred *new, return cap_capset(new, old, effective, inheritable, permitted); } -static inline int security_capable(int cap) +static inline int security_capable(const struct cred *cred, int cap) { - return cap_capable(current, current_cred(), cap, SECURITY_CAP_AUDIT); + return cap_capable(current, cred, cap, SECURITY_CAP_AUDIT); } static inline int security_real_capable(struct task_struct *tsk, int cap) -- cgit v1.2.3 From cfaea56741360311d0dabcb6603fa78c2e3de155 Mon Sep 17 00:00:00 2001 From: Trilok Soni Date: Fri, 11 Feb 2011 00:44:41 -0800 Subject: Input: matrix_keypad - increase the limit of rows and columns Some keyboard controllers support more than 16 columns and rows. Increase the limit to 32. Signed-off-by: Trilok Soni Acked-by: Eric Miao Signed-off-by: Dmitry Torokhov --- include/linux/input/matrix_keypad.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/input/matrix_keypad.h b/include/linux/input/matrix_keypad.h index 80352ad6581a..b67feb8513a6 100644 --- a/include/linux/input/matrix_keypad.h +++ b/include/linux/input/matrix_keypad.h @@ -4,8 +4,8 @@ #include #include -#define MATRIX_MAX_ROWS 16 -#define MATRIX_MAX_COLS 16 +#define MATRIX_MAX_ROWS 32 +#define MATRIX_MAX_COLS 32 #define KEY(row, col, val) ((((row) & (MATRIX_MAX_ROWS - 1)) << 24) |\ (((col) & (MATRIX_MAX_COLS - 1)) << 16) |\ -- cgit v1.2.3 From c186794dbb466b45cf40f942f2d09d6d5b4b0e42 Mon Sep 17 00:00:00 2001 From: Mike Snitzer Date: Fri, 11 Feb 2011 11:08:00 +0100 Subject: block: share request flush fields with elevator_private Flush requests are never put on the IO scheduler. Convert request structure's elevator_private* into an array and have the flush fields share a union with it. Reclaim the space lost in 'struct request' by moving 'completion_data' back in the union with 'rb_node'. Signed-off-by: Mike Snitzer Acked-by: Vivek Goyal Acked-by: Tejun Heo Signed-off-by: Jens Axboe --- include/linux/blkdev.h | 23 ++++++++++++----------- 1 file changed, 12 insertions(+), 11 deletions(-) (limited to 'include/linux') diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 6d7e9afd08c3..12bb426949e9 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -99,25 +99,26 @@ struct request { /* * The rb_node is only used inside the io scheduler, requests * are pruned when moved to the dispatch queue. So let the - * flush fields share space with the rb_node. + * completion_data share space with the rb_node. */ union { struct rb_node rb_node; /* sort/lookup */ - struct { - unsigned int seq; - struct list_head list; - } flush; + void *completion_data; }; - void *completion_data; - /* * Three pointers are available for the IO schedulers, if they need - * more they have to dynamically allocate it. + * more they have to dynamically allocate it. Flush requests are + * never put on the IO scheduler. So let the flush fields share + * space with the three elevator_private pointers. */ - void *elevator_private; - void *elevator_private2; - void *elevator_private3; + union { + void *elevator_private[3]; + struct { + unsigned int seq; + struct list_head list; + } flush; + }; struct gendisk *rq_disk; unsigned long start_time; -- cgit v1.2.3 From b4dbde9da8ece42bbe4c70c26bac3b28dd6a3ddb Mon Sep 17 00:00:00 2001 From: Alan Ott Date: Tue, 18 Jan 2011 03:04:39 -0500 Subject: HID: Add Support for Setting and Getting Feature Reports from hidraw Per the HID Specification, Feature reports must be sent and received on the Configuration endpoint (EP 0) through the Set_Report/Get_Report interfaces. This patch adds two ioctls to hidraw to set and get feature reports to and from the device. Modifications were made to hidraw and usbhid. New hidraw ioctls: HIDIOCSFEATURE - Perform a Set_Report transfer of a Feature report. HIDIOCGFEATURE - Perform a Get_Report transfer of a Feature report. Signed-off-by: Alan Ott Signed-off-by: Antonio Ospite Signed-off-by: Jiri Kosina --- include/linux/hid.h | 3 +++ include/linux/hidraw.h | 3 +++ 2 files changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/hid.h b/include/linux/hid.h index d91c25e253c8..e8ee0a93bda3 100644 --- a/include/linux/hid.h +++ b/include/linux/hid.h @@ -504,6 +504,9 @@ struct hid_device { /* device report descriptor */ struct hid_usage *, __s32); void (*hiddev_report_event) (struct hid_device *, struct hid_report *); + /* handler for raw input (Get_Report) data, used by hidraw */ + int (*hid_get_raw_report) (struct hid_device *, unsigned char, __u8 *, size_t, unsigned char); + /* handler for raw output data, used by hidraw */ int (*hid_output_raw_report) (struct hid_device *, __u8 *, size_t, unsigned char); diff --git a/include/linux/hidraw.h b/include/linux/hidraw.h index dd8d69269176..4b88e697c4e9 100644 --- a/include/linux/hidraw.h +++ b/include/linux/hidraw.h @@ -35,6 +35,9 @@ struct hidraw_devinfo { #define HIDIOCGRAWINFO _IOR('H', 0x03, struct hidraw_devinfo) #define HIDIOCGRAWNAME(len) _IOC(_IOC_READ, 'H', 0x04, len) #define HIDIOCGRAWPHYS(len) _IOC(_IOC_READ, 'H', 0x05, len) +/* The first byte of SFEATURE and GFEATURE is the report number */ +#define HIDIOCSFEATURE(len) _IOC(_IOC_WRITE|_IOC_READ, 'H', 0x06, len) +#define HIDIOCGFEATURE(len) _IOC(_IOC_WRITE|_IOC_READ, 'H', 0x07, len) #define HIDRAW_FIRST_MINOR 0 #define HIDRAW_MAX_DEVICES 64 -- cgit v1.2.3 From d033d526a465c4bb8a499a0b5df65b3e7cf4da6f Mon Sep 17 00:00:00 2001 From: John Fastabend Date: Thu, 10 Feb 2011 14:40:01 +0000 Subject: ixgbe: DCB, implement 802.1Qaz routines Implements 802.1Qaz support for ixgbe driver. Additionally, this adds IEEE_8021QAZ_TSA_{} defines to dcbnl.h this is to avoid having to use cryptic numeric codes for the TSA type. Signed-off-by: John Fastabend Tested-by: Ross Brattain Signed-off-by: Jeff Kirsher --- include/linux/dcbnl.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/dcbnl.h b/include/linux/dcbnl.h index 68cd248f6d3e..cd8d518efa3b 100644 --- a/include/linux/dcbnl.h +++ b/include/linux/dcbnl.h @@ -25,6 +25,11 @@ /* IEEE 802.1Qaz std supported values */ #define IEEE_8021QAZ_MAX_TCS 8 +#define IEEE_8021QAZ_TSA_STRICT 0 +#define IEEE_8021QAZ_TSA_CB_SHABER 1 +#define IEEE_8021QAZ_TSA_ETS 2 +#define IEEE_8021QAZ_TSA_VENDOR 255 + /* This structure contains the IEEE 802.1Qaz ETS managed object * * @willing: willing bit in ETS configuratin TLV -- cgit v1.2.3 From 868baf07b1a259f5f3803c1dc2777b6c358f83cf Mon Sep 17 00:00:00 2001 From: Steven Rostedt Date: Thu, 10 Feb 2011 21:26:13 -0500 Subject: ftrace: Fix memory leak with function graph and cpu hotplug When the fuction graph tracer starts, it needs to make a special stack for each task to save the real return values of the tasks. All running tasks have this stack created, as well as any new tasks. On CPU hot plug, the new idle task will allocate a stack as well when init_idle() is called. The problem is that cpu hotplug does not create a new idle_task. Instead it uses the idle task that existed when the cpu went down. ftrace_graph_init_task() will add a new ret_stack to the task that is given to it. Because a clone will make the task have a stack of its parent it does not check if the task's ret_stack is already NULL or not. When the CPU hotplug code starts a CPU up again, it will allocate a new stack even though one already existed for it. The solution is to treat the idle_task specially. In fact, the function_graph code already does, just not at init_idle(). Instead of using the ftrace_graph_init_task() for the idle task, which that function expects the task to be a clone, have a separate ftrace_graph_init_idle_task(). Also, we will create a per_cpu ret_stack that is used by the idle task. When we call ftrace_graph_init_idle_task() it will check if the idle task's ret_stack is NULL, if it is, then it will assign it the per_cpu ret_stack. Reported-by: Benjamin Herrenschmidt Suggested-by: Peter Zijlstra Cc: Stable Tree Signed-off-by: Steven Rostedt --- include/linux/ftrace.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h index dcd6a7c3a435..ca29e03c1fac 100644 --- a/include/linux/ftrace.h +++ b/include/linux/ftrace.h @@ -428,6 +428,7 @@ extern void unregister_ftrace_graph(void); extern void ftrace_graph_init_task(struct task_struct *t); extern void ftrace_graph_exit_task(struct task_struct *t); +extern void ftrace_graph_init_idle_task(struct task_struct *t, int cpu); static inline int task_curr_ret_stack(struct task_struct *t) { @@ -451,6 +452,7 @@ static inline void unpause_graph_tracing(void) static inline void ftrace_graph_init_task(struct task_struct *t) { } static inline void ftrace_graph_exit_task(struct task_struct *t) { } +static inline void ftrace_graph_init_idle_task(struct task_struct *t, int cpu) { } static inline int register_ftrace_graph(trace_func_graph_ret_t retfunc, trace_func_graph_ent_t entryfunc) -- cgit v1.2.3 From d59cfde2fb960b5970ccb5a38cea25d38b37a8e8 Mon Sep 17 00:00:00 2001 From: Jiri Pirko Date: Sat, 12 Feb 2011 00:46:06 +0000 Subject: net: remove the unnecessary dance around skb_bond_should_drop MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit No need to check (master) twice and to drive in and out the header file. Signed-off-by: Jiri Pirko Reviewed-by: Nicolas de Pesloüan Signed-off-by: David S. Miller --- include/linux/netdevice.h | 11 ----------- 1 file changed, 11 deletions(-) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index c7d707452228..5a5baeaaa50f 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -2437,17 +2437,6 @@ static inline void netif_set_gso_max_size(struct net_device *dev, dev->gso_max_size = size; } -extern int __skb_bond_should_drop(struct sk_buff *skb, - struct net_device *master); - -static inline int skb_bond_should_drop(struct sk_buff *skb, - struct net_device *master) -{ - if (master) - return __skb_bond_should_drop(skb, master); - return 0; -} - extern struct pernet_operations __net_initdata loopback_net_ops; static inline int dev_ethtool_get_settings(struct net_device *dev, -- cgit v1.2.3 From 1765a575334f1a232c1478accdee5c7d19f4b3e3 Mon Sep 17 00:00:00 2001 From: Jiri Pirko Date: Sat, 12 Feb 2011 06:48:36 +0000 Subject: net: make dev->master general dev->master is now tightly connected to bonding driver. This patch makes this pointer more general and ready to be used by others. - netdev_set_master() - bond specifics moved to new function netdev_set_bond_master() - introduced netif_is_bond_slave() to check if device is a bonding slave Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller --- include/linux/netdevice.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 5a5baeaaa50f..5a42b1003767 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -2377,6 +2377,8 @@ extern int netdev_max_backlog; extern int netdev_tstamp_prequeue; extern int weight_p; extern int netdev_set_master(struct net_device *dev, struct net_device *master); +extern int netdev_set_bond_master(struct net_device *dev, + struct net_device *master); extern int skb_checksum_help(struct sk_buff *skb); extern struct sk_buff *skb_gso_segment(struct sk_buff *skb, u32 features); #ifdef CONFIG_BUG @@ -2437,6 +2439,11 @@ static inline void netif_set_gso_max_size(struct net_device *dev, dev->gso_max_size = size; } +static inline int netif_is_bond_slave(struct net_device *dev) +{ + return dev->flags & IFF_SLAVE && dev->priv_flags & IFF_BONDING; +} + extern struct pernet_operations __net_initdata loopback_net_ops; static inline int dev_ethtool_get_settings(struct net_device *dev, -- cgit v1.2.3 From 64878c0eff5737e15b3ff06d02e7227eda4aa04c Mon Sep 17 00:00:00 2001 From: James Bottomley Date: Sun, 23 Jan 2011 09:42:50 -0600 Subject: [SCSI] libata: separate error handler into usable components Right at the moment, the libata error handler is incredibly monolithic. This makes it impossible to use from composite drivers like libsas and ipr which have to handle error themselves in the first instance. The essence of the change is to split the monolithic error handler into two components: one which handles a queue of ata commands for processing and the other which handles the back end of readying a port. This allows the upper error handler fine grained control in calling libsas functions (and making sure they only get called for ATA commands whose lower errors have been fixed up). Cc: Tejun Heo Cc: Jeff Garzik Signed-off-by: James Bottomley --- include/linux/libata.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/libata.h b/include/linux/libata.h index c9c5d7ad1a2b..9739317c707a 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -1050,6 +1050,8 @@ extern int ata_scsi_change_queue_depth(struct scsi_device *sdev, int queue_depth, int reason); extern struct ata_device *ata_dev_pair(struct ata_device *adev); extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev); +extern void ata_scsi_port_error_handler(struct Scsi_Host *host, struct ata_port *ap); +extern void ata_scsi_cmd_error_handler(struct Scsi_Host *host, struct ata_port *ap, struct list_head *eh_q); extern int ata_cable_40wire(struct ata_port *ap); extern int ata_cable_80wire(struct ata_port *ap); -- cgit v1.2.3 From 795abaf1e4e188c4171e3cd3dbb11a9fcacaf505 Mon Sep 17 00:00:00 2001 From: David Miller Date: Sun, 13 Feb 2011 16:37:07 -0800 Subject: klist: Fix object alignment on 64-bit. Commit c0e69a5bbc6f ("klist.c: bit 0 in pointer can't be used as flag") intended to make sure that all klist objects were at least pointer size aligned, but used the constant "4" which only works on 32-bit. Use "sizeof(void *)" which is correct in all cases. Signed-off-by: David S. Miller Acked-by: Jesper Nilsson Cc: stable Cc: Greg Kroah-Hartman Signed-off-by: Linus Torvalds --- include/linux/klist.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/klist.h b/include/linux/klist.h index e91a4e59b771..a370ce57cf1d 100644 --- a/include/linux/klist.h +++ b/include/linux/klist.h @@ -22,7 +22,7 @@ struct klist { struct list_head k_list; void (*get)(struct klist_node *); void (*put)(struct klist_node *); -} __attribute__ ((aligned (4))); +} __attribute__ ((aligned (sizeof(void *)))); #define KLIST_INIT(_name, _get, _put) \ { .k_lock = __SPIN_LOCK_UNLOCKED(_name.k_lock), \ -- cgit v1.2.3 From fbaec0ea54f7d9131891ff98744e82c073ce03b1 Mon Sep 17 00:00:00 2001 From: Jiri Pirko Date: Sun, 13 Feb 2011 10:15:37 +0000 Subject: rtnetlink: implement setting of master device This patch allows userspace to enslave/release slave devices via netlink interface using IFLA_MASTER. This introduces generic way to add/remove underling devices. Signed-off-by: Jiri Pirko Acked-by: Patrick McHardy Signed-off-by: David S. Miller --- include/linux/netdevice.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 5a42b1003767..d08ef6538579 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -783,6 +783,14 @@ struct netdev_tc_txq { * Set hardware filter for RFS. rxq_index is the target queue index; * flow_id is a flow ID to be passed to rps_may_expire_flow() later. * Return the filter ID on success, or a negative error code. + * + * Slave management functions (for bridge, bonding, etc). User should + * call netdev_set_master() to set dev->master properly. + * int (*ndo_add_slave)(struct net_device *dev, struct net_device *slave_dev); + * Called to make another netdev an underling. + * + * int (*ndo_del_slave)(struct net_device *dev, struct net_device *slave_dev); + * Called to release previously enslaved netdev. */ #define HAVE_NET_DEVICE_OPS struct net_device_ops { @@ -862,6 +870,10 @@ struct net_device_ops { u16 rxq_index, u32 flow_id); #endif + int (*ndo_add_slave)(struct net_device *dev, + struct net_device *slave_dev); + int (*ndo_del_slave)(struct net_device *dev, + struct net_device *slave_dev); }; /* -- cgit v1.2.3 From d606ef3fe0c57504b8e534c58498f73a6abc049a Mon Sep 17 00:00:00 2001 From: Baruch Siach Date: Mon, 14 Feb 2011 02:05:33 +0000 Subject: phy/micrel: add ability to support 50MHz RMII clock on KZS8051RNL Platform code can now set the MICREL_PHY_50MHZ_CLK bit of dev_flags in a fixup routine (registered with phy_register_fixup_for_uid()), to make the KZS8051RNL PHY work with 50MHz RMII reference clock. Cc: David J. Choi Signed-off-by: Baruch Siach Signed-off-by: David S. Miller --- include/linux/micrel_phy.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) create mode 100644 include/linux/micrel_phy.h (limited to 'include/linux') diff --git a/include/linux/micrel_phy.h b/include/linux/micrel_phy.h new file mode 100644 index 000000000000..dd8da342a991 --- /dev/null +++ b/include/linux/micrel_phy.h @@ -0,0 +1,16 @@ +#ifndef _MICREL_PHY_H +#define _MICREL_PHY_H + +#define MICREL_PHY_ID_MASK 0x00fffff0 + +#define PHY_ID_KSZ9021 0x00221611 +#define PHY_ID_KS8737 0x00221720 +#define PHY_ID_KS8041 0x00221510 +#define PHY_ID_KS8051 0x00221550 +/* both for ks8001 Rev. A/B, and for ks8721 Rev 3. */ +#define PHY_ID_KS8001 0x0022161A + +/* struct phy_device dev_flags definitions */ +#define MICREL_PHY_50MHZ_CLK 0x00000001 + +#endif /* _MICREL_PHY_H */ -- cgit v1.2.3 From 54ebbe7ba51d97a28a9a406203d171d61858e4b9 Mon Sep 17 00:00:00 2001 From: Heinz Graalfs Date: Fri, 21 Jan 2011 10:06:54 +0000 Subject: oprofile: Introduce new oprofile sample add function (oprofile_add_ext_hw_sample) This patch introduces a new oprofile sample add function (oprofile_add_ext_hw_sample) that can also take task_struct as an argument, which is used by the hwsampler kernel module when copying hardware samples to OProfile buffers. Applied with following changes: * removed #include * whitespace changes * removed conditional compilation (CONFIG_HAVE_HWSAMPLER) * modified order of functions * fix missing function definition in header file Signed-off-by: Mahesh Salgaonkar Signed-off-by: Maran Pakkirisamy Signed-off-by: Heinz Graalfs Acked-by: Heiko Carstens Signed-off-by: Robert Richter --- include/linux/oprofile.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/oprofile.h b/include/linux/oprofile.h index 1ca64113efe8..7f5cfd3b37dd 100644 --- a/include/linux/oprofile.h +++ b/include/linux/oprofile.h @@ -106,6 +106,13 @@ void oprofile_add_sample(struct pt_regs * const regs, unsigned long event); void oprofile_add_ext_sample(unsigned long pc, struct pt_regs * const regs, unsigned long event, int is_kernel); +/** + * Add an hardware sample. + */ +void oprofile_add_ext_hw_sample(unsigned long pc, struct pt_regs * const regs, + unsigned long event, int is_kernel, + struct task_struct *task); + /* Use this instead when the PC value is not from the regs. Doesn't * backtrace. */ void oprofile_add_pc(unsigned long pc, int is_kernel, unsigned long event); -- cgit v1.2.3 From 997dbb4967da248808850c250182ef2528fff2d1 Mon Sep 17 00:00:00 2001 From: Heinz Graalfs Date: Fri, 21 Jan 2011 10:06:53 +0000 Subject: oprofile, s390: Enhance OProfile to support System zs hardware sampling feature OProfile is enhanced to export all files for controlling System z's hardware sampling, and to invoke hwsampler exported functions to initialize and use System z's hardware sampling. The patch invokes hwsampler_setup() during oprofile init and exports following hwsampler files under oprofilefs if hwsampler's setup succeeded: A new directory for hardware sampling based files /dev/oprofile/hwsampling/ The userland daemon must explicitly write to the following files to disable (or enable) hardware based sampling /dev/oprofile/hwsampling/hwsampler to modify the actual sampling rate /dev/oprofile/hwsampling/hw_interval to modify the amount of sampling memory (measured in 4K pages) /dev/oprofile/hwsampling/hw_sdbt_blocks The following files are read only and show the possible minimum sampling rate /dev/oprofile/hwsampling/hw_min_interval the possible maximum sampling rate /dev/oprofile/hwsampling/hw_max_interval The patch splits the oprofile_timer_[init/exit] function so that it can be also called through user context (oprofilefs) to avoid kernel oops. Applied with following changes: * whitespace changes in Makefile and timer_int.c Signed-off-by: Mahesh Salgaonkar Signed-off-by: Maran Pakkirisamy Signed-off-by: Heinz Graalfs Acked-by: Heiko Carstens Signed-off-by: Robert Richter --- include/linux/oprofile.h | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) (limited to 'include/linux') diff --git a/include/linux/oprofile.h b/include/linux/oprofile.h index 7f5cfd3b37dd..b517d869e1ad 100644 --- a/include/linux/oprofile.h +++ b/include/linux/oprofile.h @@ -91,6 +91,27 @@ int oprofile_arch_init(struct oprofile_operations * ops); */ void oprofile_arch_exit(void); +#ifdef CONFIG_HAVE_HWSAMPLER +/** + * setup hardware sampler for oprofiling. + */ + +int oprofile_set_hwsampler(unsigned long); + +/** + * hardware sampler module initialization for the s390 arch + */ + +int oprofile_arch_set_hwsampler(struct oprofile_operations *ops); + +/** + * Add an s390 hardware sample. + */ +void oprofile_add_ext_hw_sample(unsigned long pc, struct pt_regs * const regs, + unsigned long event, int is_kernel, + struct task_struct *task); +#endif /* CONFIG_HAVE_HWSAMPLER */ + /** * Add a sample. This may be called from any context. */ -- cgit v1.2.3 From a0d76247e07abd14968adc4486aaa8e270e9c209 Mon Sep 17 00:00:00 2001 From: Robert Richter Date: Fri, 11 Feb 2011 17:31:44 +0100 Subject: oprofile, s390: Rework hwsampler implementation This patch is a rework of the hwsampler oprofile implementation that has been applied recently. Now there are less non-architectural changes. The only changes are: * introduction of oprofile_add_ext_hw_sample(), and * removal of section attributes of oprofile_timer_init/_exit(). To setup hwsampler for oprofile we need to modify start()/stop() callbacks and additional hwsampler control files in oprofilefs. We do not reinitialize the timer or hwsampler mode by restarting calling init/exit() anymore, instead hwsampler_running is used to switch the mode directly in oprofile_hwsampler_start/_stop(). For locking reasons there is also hwsampler_file that reflects the value in oprofilefs. The overall diffstat of the oprofile s390 hwsampler implemenation shows the low impact to non-architectural code: arch/Kconfig | 3 + arch/s390/Kconfig | 1 + arch/s390/oprofile/Makefile | 2 +- arch/s390/oprofile/hwsampler.c | 1256 ++++++++++++++++++++++++++++++++++ arch/s390/oprofile/hwsampler.h | 113 +++ arch/s390/oprofile/hwsampler_files.c | 162 +++++ arch/s390/oprofile/init.c | 6 +- drivers/oprofile/cpu_buffer.c | 24 +- drivers/oprofile/timer_int.c | 4 +- include/linux/oprofile.h | 7 + 10 files changed, 1567 insertions(+), 11 deletions(-) Acked-by: Heiko Carstens Signed-off-by: Robert Richter --- include/linux/oprofile.h | 21 --------------------- 1 file changed, 21 deletions(-) (limited to 'include/linux') diff --git a/include/linux/oprofile.h b/include/linux/oprofile.h index b517d869e1ad..7f5cfd3b37dd 100644 --- a/include/linux/oprofile.h +++ b/include/linux/oprofile.h @@ -91,27 +91,6 @@ int oprofile_arch_init(struct oprofile_operations * ops); */ void oprofile_arch_exit(void); -#ifdef CONFIG_HAVE_HWSAMPLER -/** - * setup hardware sampler for oprofiling. - */ - -int oprofile_set_hwsampler(unsigned long); - -/** - * hardware sampler module initialization for the s390 arch - */ - -int oprofile_arch_set_hwsampler(struct oprofile_operations *ops); - -/** - * Add an s390 hardware sample. - */ -void oprofile_add_ext_hw_sample(unsigned long pc, struct pt_regs * const regs, - unsigned long event, int is_kernel, - struct task_struct *task); -#endif /* CONFIG_HAVE_HWSAMPLER */ - /** * Add a sample. This may be called from any context. */ -- cgit v1.2.3 From a7d6e4ecdb7648478ddec76d30d87d03d6e22b31 Mon Sep 17 00:00:00 2001 From: Andrea Arcangeli Date: Tue, 15 Feb 2011 19:02:45 +0100 Subject: thp: prevent hugepages during args/env copying into the user stack Transparent hugepages can only be created if rmap is fully functional. So we must prevent hugepages to be created while is_vma_temporary_stack() is true. This also optmizes away some harmless but unnecessary setting of khugepaged_scan.address and it switches some BUG_ON to VM_BUG_ON. Signed-off-by: Andrea Arcangeli Acked-by: Rik van Riel Signed-off-by: Linus Torvalds --- include/linux/huge_mm.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h index 8e6c8c42bc3c..df29c8fde36b 100644 --- a/include/linux/huge_mm.h +++ b/include/linux/huge_mm.h @@ -57,7 +57,8 @@ extern pmd_t *page_check_address_pmd(struct page *page, (transparent_hugepage_flags & \ (1<vm_flags & VM_HUGEPAGE))) && \ - !((__vma)->vm_flags & VM_NOHUGEPAGE)) + !((__vma)->vm_flags & VM_NOHUGEPAGE) && \ + !is_vma_temporary_stack(__vma)) #define transparent_hugepage_defrag(__vma) \ ((transparent_hugepage_flags & \ (1< Date: Mon, 7 Feb 2011 17:02:20 +0100 Subject: cgroup: Fix cgroup_subsys::exit callback Make the ::exit method act like ::attach, it is after all very nearly the same thing. The bug had no effect on correctness - fixing it is an optimization for the scheduler. Also, later perf-cgroups patches rely on it. Signed-off-by: Peter Zijlstra Acked-by: Paul Menage LKML-Reference: <1297160655.13327.92.camel@laptop> Signed-off-by: Ingo Molnar --- include/linux/cgroup.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h index ce104e33cd22..38117d937332 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -474,7 +474,8 @@ struct cgroup_subsys { struct cgroup *old_cgrp, struct task_struct *tsk, bool threadgroup); void (*fork)(struct cgroup_subsys *ss, struct task_struct *task); - void (*exit)(struct cgroup_subsys *ss, struct task_struct *task); + void (*exit)(struct cgroup_subsys *ss, struct cgroup *cgrp, + struct cgroup *old_cgrp, struct task_struct *task); int (*populate)(struct cgroup_subsys *ss, struct cgroup *cgrp); void (*post_clone)(struct cgroup_subsys *ss, struct cgroup *cgrp); -- cgit v1.2.3 From e5d1367f17ba6a6fed5fd8b74e4d5720923e0c25 Mon Sep 17 00:00:00 2001 From: Stephane Eranian Date: Mon, 14 Feb 2011 11:20:01 +0200 Subject: perf: Add cgroup support This kernel patch adds the ability to filter monitoring based on container groups (cgroups). This is for use in per-cpu mode only. The cgroup to monitor is passed as a file descriptor in the pid argument to the syscall. The file descriptor must be opened to the cgroup name in the cgroup filesystem. For instance, if the cgroup name is foo and cgroupfs is mounted in /cgroup, then the file descriptor is opened to /cgroup/foo. Cgroup mode is activated by passing PERF_FLAG_PID_CGROUP in the flags argument to the syscall. For instance to measure in cgroup foo on CPU1 assuming cgroupfs is mounted under /cgroup: struct perf_event_attr attr; int cgroup_fd, fd; cgroup_fd = open("/cgroup/foo", O_RDONLY); fd = perf_event_open(&attr, cgroup_fd, 1, -1, PERF_FLAG_PID_CGROUP); close(cgroup_fd); Signed-off-by: Stephane Eranian [ added perf_cgroup_{exit,attach} ] Signed-off-by: Peter Zijlstra LKML-Reference: <4d590250.114ddf0a.689e.4482@mx.google.com> Signed-off-by: Ingo Molnar --- include/linux/cgroup.h | 1 + include/linux/cgroup_subsys.h | 4 ++++ include/linux/perf_event.h | 33 ++++++++++++++++++++++++++++++--- 3 files changed, 35 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h index 38117d937332..e654fa239916 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -627,6 +627,7 @@ bool css_is_ancestor(struct cgroup_subsys_state *cg, /* Get id and depth of css */ unsigned short css_id(struct cgroup_subsys_state *css); unsigned short css_depth(struct cgroup_subsys_state *css); +struct cgroup_subsys_state *cgroup_css_from_dir(struct file *f, int id); #else /* !CONFIG_CGROUPS */ diff --git a/include/linux/cgroup_subsys.h b/include/linux/cgroup_subsys.h index ccefff02b6cb..cdbfcb8780ec 100644 --- a/include/linux/cgroup_subsys.h +++ b/include/linux/cgroup_subsys.h @@ -65,4 +65,8 @@ SUBSYS(net_cls) SUBSYS(blkio) #endif +#ifdef CONFIG_CGROUP_PERF +SUBSYS(perf) +#endif + /* */ diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index dda5b0a3ff60..38c8b2554842 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -464,6 +464,7 @@ enum perf_callchain_context { #define PERF_FLAG_FD_NO_GROUP (1U << 0) #define PERF_FLAG_FD_OUTPUT (1U << 1) +#define PERF_FLAG_PID_CGROUP (1U << 2) /* pid=cgroup id, per-cpu mode only */ #ifdef __KERNEL__ /* @@ -471,6 +472,7 @@ enum perf_callchain_context { */ #ifdef CONFIG_PERF_EVENTS +# include # include # include #endif @@ -716,6 +718,22 @@ struct swevent_hlist { #define PERF_ATTACH_GROUP 0x02 #define PERF_ATTACH_TASK 0x04 +#ifdef CONFIG_CGROUP_PERF +/* + * perf_cgroup_info keeps track of time_enabled for a cgroup. + * This is a per-cpu dynamically allocated data structure. + */ +struct perf_cgroup_info { + u64 time; + u64 timestamp; +}; + +struct perf_cgroup { + struct cgroup_subsys_state css; + struct perf_cgroup_info *info; /* timing info, one per cpu */ +}; +#endif + /** * struct perf_event - performance event kernel representation: */ @@ -832,6 +850,11 @@ struct perf_event { struct event_filter *filter; #endif +#ifdef CONFIG_CGROUP_PERF + struct perf_cgroup *cgrp; /* cgroup event is attach to */ + int cgrp_defer_enabled; +#endif + #endif /* CONFIG_PERF_EVENTS */ }; @@ -886,6 +909,7 @@ struct perf_event_context { u64 generation; int pin_count; struct rcu_head rcu_head; + int nr_cgroups; /* cgroup events present */ }; /* @@ -905,6 +929,9 @@ struct perf_cpu_context { struct list_head rotation_list; int jiffies_interval; struct pmu *active_pmu; +#ifdef CONFIG_CGROUP_PERF + struct perf_cgroup *cgrp; +#endif }; struct perf_output_handle { @@ -1040,11 +1067,11 @@ have_event: __perf_sw_event(event_id, nr, nmi, regs, addr); } -extern atomic_t perf_task_events; +extern atomic_t perf_sched_events; static inline void perf_event_task_sched_in(struct task_struct *task) { - COND_STMT(&perf_task_events, __perf_event_task_sched_in(task)); + COND_STMT(&perf_sched_events, __perf_event_task_sched_in(task)); } static inline @@ -1052,7 +1079,7 @@ void perf_event_task_sched_out(struct task_struct *task, struct task_struct *nex { perf_sw_event(PERF_COUNT_SW_CONTEXT_SWITCHES, 1, 1, NULL, 0); - COND_STMT(&perf_task_events, __perf_event_task_sched_out(task, next)); + COND_STMT(&perf_sched_events, __perf_event_task_sched_out(task, next)); } extern void perf_event_mmap(struct vm_area_struct *vma); -- cgit v1.2.3 From 163ec4354a5135c6c38c3f4a9b46a31900ebdf48 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Wed, 16 Feb 2011 11:22:34 +0100 Subject: perf: Optimize throttling code By pre-computing the maximum number of samples per tick we can avoid a multiplication and a conditional since MAX_INTERRUPTS > max_samples_per_tick. Signed-off-by: Peter Zijlstra LKML-Reference: Signed-off-by: Ingo Molnar --- include/linux/perf_event.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index 38c8b2554842..8ceb5a6fd9c9 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -1110,6 +1110,10 @@ extern int sysctl_perf_event_paranoid; extern int sysctl_perf_event_mlock; extern int sysctl_perf_event_sample_rate; +extern int perf_proc_update_handler(struct ctl_table *table, int write, + void __user *buffer, size_t *lenp, + loff_t *ppos); + static inline bool perf_paranoid_tracepoint_raw(void) { return sysctl_perf_event_paranoid > -1; -- cgit v1.2.3 From 58a69cb47ec6991bf006a3e5d202e8571b0327a4 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 16 Feb 2011 09:25:31 +0100 Subject: workqueue, freezer: unify spelling of 'freeze' + 'able' to 'freezable' There are two spellings in use for 'freeze' + 'able' - 'freezable' and 'freezeable'. The former is the more prominent one. The latter is mostly used by workqueue and in a few other odd places. Unify the spelling to 'freezable'. Signed-off-by: Tejun Heo Reported-by: Alan Stern Acked-by: "Rafael J. Wysocki" Acked-by: Greg Kroah-Hartman Acked-by: Dmitry Torokhov Cc: David Woodhouse Cc: Alex Dubov Cc: "David S. Miller" Cc: Steven Whitehouse --- include/linux/freezer.h | 2 +- include/linux/sched.h | 2 +- include/linux/workqueue.h | 8 ++++---- 3 files changed, 6 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/freezer.h b/include/linux/freezer.h index da7e52b099f3..1effc8b56b4e 100644 --- a/include/linux/freezer.h +++ b/include/linux/freezer.h @@ -109,7 +109,7 @@ static inline void freezer_count(void) } /* - * Check if the task should be counted as freezeable by the freezer + * Check if the task should be counted as freezable by the freezer */ static inline int freezer_should_skip(struct task_struct *p) { diff --git a/include/linux/sched.h b/include/linux/sched.h index d747f948b34e..777d8a5ed06b 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1744,7 +1744,7 @@ extern void thread_group_times(struct task_struct *p, cputime_t *ut, cputime_t * #define PF_MCE_EARLY 0x08000000 /* Early kill for mce process policy */ #define PF_MEMPOLICY 0x10000000 /* Non-default NUMA mempolicy */ #define PF_MUTEX_TESTER 0x20000000 /* Thread belongs to the rt mutex tester */ -#define PF_FREEZER_SKIP 0x40000000 /* Freezer should not count it as freezeable */ +#define PF_FREEZER_SKIP 0x40000000 /* Freezer should not count it as freezable */ #define PF_FREEZER_NOSIG 0x80000000 /* Freezer won't send signals to it */ /* diff --git a/include/linux/workqueue.h b/include/linux/workqueue.h index 1ac11586a2f5..f7998a3bf020 100644 --- a/include/linux/workqueue.h +++ b/include/linux/workqueue.h @@ -250,7 +250,7 @@ static inline unsigned int work_static(struct work_struct *work) { return 0; } enum { WQ_NON_REENTRANT = 1 << 0, /* guarantee non-reentrance */ WQ_UNBOUND = 1 << 1, /* not bound to any cpu */ - WQ_FREEZEABLE = 1 << 2, /* freeze during suspend */ + WQ_FREEZABLE = 1 << 2, /* freeze during suspend */ WQ_MEM_RECLAIM = 1 << 3, /* may be used for memory reclaim */ WQ_HIGHPRI = 1 << 4, /* high priority */ WQ_CPU_INTENSIVE = 1 << 5, /* cpu instensive workqueue */ @@ -318,7 +318,7 @@ __alloc_workqueue_key(const char *name, unsigned int flags, int max_active, /** * alloc_ordered_workqueue - allocate an ordered workqueue * @name: name of the workqueue - * @flags: WQ_* flags (only WQ_FREEZEABLE and WQ_MEM_RECLAIM are meaningful) + * @flags: WQ_* flags (only WQ_FREEZABLE and WQ_MEM_RECLAIM are meaningful) * * Allocate an ordered workqueue. An ordered workqueue executes at * most one work item at any given time in the queued order. They are @@ -335,8 +335,8 @@ alloc_ordered_workqueue(const char *name, unsigned int flags) #define create_workqueue(name) \ alloc_workqueue((name), WQ_MEM_RECLAIM, 1) -#define create_freezeable_workqueue(name) \ - alloc_workqueue((name), WQ_FREEZEABLE | WQ_UNBOUND | WQ_MEM_RECLAIM, 1) +#define create_freezable_workqueue(name) \ + alloc_workqueue((name), WQ_FREEZABLE | WQ_UNBOUND | WQ_MEM_RECLAIM, 1) #define create_singlethread_workqueue(name) \ alloc_workqueue((name), WQ_UNBOUND | WQ_MEM_RECLAIM, 1) -- cgit v1.2.3 From 3449248c8731e8474980856d76bbf9bac9b0682f Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Mon, 14 Feb 2011 12:27:50 -0800 Subject: PCI: fix tlan build when CONFIG_PCI is not enabled When CONFIG_PCI is not enabled, tlan.c has a build error: drivers/net/tlan.c:503: error: implicit declaration of function 'pci_wake_from_d3' so add an inline function stub for this function to pci.h when PCI is not enabled, similar to other stubbed PCI functions. Signed-off-by: Randy Dunlap Acked-by: David S. Miller Acked-by: Sakari Ailus Signed-off-by: Jesse Barnes --- include/linux/pci.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pci.h b/include/linux/pci.h index 559d02897075..c77e730bcd38 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1191,6 +1191,11 @@ static inline int pci_set_power_state(struct pci_dev *dev, pci_power_t state) return 0; } +static inline int pci_wake_from_d3(struct pci_dev *dev, bool enable) +{ + return 0; +} + static inline pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state) { -- cgit v1.2.3 From bd9a4c7df256cee4e9f6a4b56baa3b89d63f0f1e Mon Sep 17 00:00:00 2001 From: Ohad Ben-Cohen Date: Thu, 17 Feb 2011 09:52:03 -0800 Subject: drivers: hwspinlock: add framework Add a platform-independent hwspinlock framework. Hardware spinlock devices are needed, e.g., in order to access data that is shared between remote processors, that otherwise have no alternative mechanism to accomplish synchronization and mutual exclusion operations. Signed-off-by: Ohad Ben-Cohen Cc: Hari Kanigeri Cc: Benoit Cousson Cc: Kevin Hilman Cc: Grant Likely Cc: Paul Walmsley Cc: Russell King Acked-by: Arnd Bergmann Signed-off-by: Tony Lindgren --- include/linux/hwspinlock.h | 292 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 292 insertions(+) create mode 100644 include/linux/hwspinlock.h (limited to 'include/linux') diff --git a/include/linux/hwspinlock.h b/include/linux/hwspinlock.h new file mode 100644 index 000000000000..8390efc457eb --- /dev/null +++ b/include/linux/hwspinlock.h @@ -0,0 +1,292 @@ +/* + * Hardware spinlock public header + * + * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com + * + * Contact: Ohad Ben-Cohen + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef __LINUX_HWSPINLOCK_H +#define __LINUX_HWSPINLOCK_H + +#include +#include + +/* hwspinlock mode argument */ +#define HWLOCK_IRQSTATE 0x01 /* Disable interrupts, save state */ +#define HWLOCK_IRQ 0x02 /* Disable interrupts, don't save state */ + +struct hwspinlock; + +#if defined(CONFIG_HWSPINLOCK) || defined(CONFIG_HWSPINLOCK_MODULE) + +int hwspin_lock_register(struct hwspinlock *lock); +struct hwspinlock *hwspin_lock_unregister(unsigned int id); +struct hwspinlock *hwspin_lock_request(void); +struct hwspinlock *hwspin_lock_request_specific(unsigned int id); +int hwspin_lock_free(struct hwspinlock *hwlock); +int hwspin_lock_get_id(struct hwspinlock *hwlock); +int __hwspin_lock_timeout(struct hwspinlock *, unsigned int, int, + unsigned long *); +int __hwspin_trylock(struct hwspinlock *, int, unsigned long *); +void __hwspin_unlock(struct hwspinlock *, int, unsigned long *); + +#else /* !CONFIG_HWSPINLOCK */ + +/* + * We don't want these functions to fail if CONFIG_HWSPINLOCK is not + * enabled. We prefer to silently succeed in this case, and let the + * code path get compiled away. This way, if CONFIG_HWSPINLOCK is not + * required on a given setup, users will still work. + * + * The only exception is hwspin_lock_register/hwspin_lock_unregister, with which + * we _do_ want users to fail (no point in registering hwspinlock instances if + * the framework is not available). + * + * Note: ERR_PTR(-ENODEV) will still be considered a success for NULL-checking + * users. Others, which care, can still check this with IS_ERR. + */ +static inline struct hwspinlock *hwspin_lock_request(void) +{ + return ERR_PTR(-ENODEV); +} + +static inline struct hwspinlock *hwspin_lock_request_specific(unsigned int id) +{ + return ERR_PTR(-ENODEV); +} + +static inline int hwspin_lock_free(struct hwspinlock *hwlock) +{ + return 0; +} + +static inline +int __hwspin_lock_timeout(struct hwspinlock *hwlock, unsigned int to, + int mode, unsigned long *flags) +{ + return 0; +} + +static inline +int __hwspin_trylock(struct hwspinlock *hwlock, int mode, unsigned long *flags) +{ + return 0; +} + +static inline +void __hwspin_unlock(struct hwspinlock *hwlock, int mode, unsigned long *flags) +{ + return 0; +} + +static inline int hwspin_lock_get_id(struct hwspinlock *hwlock) +{ + return 0; +} + +static inline int hwspin_lock_register(struct hwspinlock *hwlock) +{ + return -ENODEV; +} + +static inline struct hwspinlock *hwspin_lock_unregister(unsigned int id) +{ + return NULL; +} + +#endif /* !CONFIG_HWSPINLOCK */ + +/** + * hwspin_trylock_irqsave() - try to lock an hwspinlock, disable interrupts + * @hwlock: an hwspinlock which we want to trylock + * @flags: a pointer to where the caller's interrupt state will be saved at + * + * This function attempts to lock the underlying hwspinlock, and will + * immediately fail if the hwspinlock is already locked. + * + * Upon a successful return from this function, preemption and local + * interrupts are disabled (previous interrupts state is saved at @flags), + * so the caller must not sleep, and is advised to release the hwspinlock + * as soon as possible. + * + * Returns 0 if we successfully locked the hwspinlock, -EBUSY if + * the hwspinlock was already taken, and -EINVAL if @hwlock is invalid. + */ +static inline +int hwspin_trylock_irqsave(struct hwspinlock *hwlock, unsigned long *flags) +{ + return __hwspin_trylock(hwlock, HWLOCK_IRQSTATE, flags); +} + +/** + * hwspin_trylock_irq() - try to lock an hwspinlock, disable interrupts + * @hwlock: an hwspinlock which we want to trylock + * + * This function attempts to lock the underlying hwspinlock, and will + * immediately fail if the hwspinlock is already locked. + * + * Upon a successful return from this function, preemption and local + * interrupts are disabled, so the caller must not sleep, and is advised + * to release the hwspinlock as soon as possible. + * + * Returns 0 if we successfully locked the hwspinlock, -EBUSY if + * the hwspinlock was already taken, and -EINVAL if @hwlock is invalid. + */ +static inline int hwspin_trylock_irq(struct hwspinlock *hwlock) +{ + return __hwspin_trylock(hwlock, HWLOCK_IRQ, NULL); +} + +/** + * hwspin_trylock() - attempt to lock a specific hwspinlock + * @hwlock: an hwspinlock which we want to trylock + * + * This function attempts to lock an hwspinlock, and will immediately fail + * if the hwspinlock is already taken. + * + * Upon a successful return from this function, preemption is disabled, + * so the caller must not sleep, and is advised to release the hwspinlock + * as soon as possible. This is required in order to minimize remote cores + * polling on the hardware interconnect. + * + * Returns 0 if we successfully locked the hwspinlock, -EBUSY if + * the hwspinlock was already taken, and -EINVAL if @hwlock is invalid. + */ +static inline int hwspin_trylock(struct hwspinlock *hwlock) +{ + return __hwspin_trylock(hwlock, 0, NULL); +} + +/** + * hwspin_lock_timeout_irqsave() - lock hwspinlock, with timeout, disable irqs + * @hwlock: the hwspinlock to be locked + * @to: timeout value in msecs + * @flags: a pointer to where the caller's interrupt state will be saved at + * + * This function locks the underlying @hwlock. If the @hwlock + * is already taken, the function will busy loop waiting for it to + * be released, but give up when @timeout msecs have elapsed. + * + * Upon a successful return from this function, preemption and local interrupts + * are disabled (plus previous interrupt state is saved), so the caller must + * not sleep, and is advised to release the hwspinlock as soon as possible. + * + * Returns 0 when the @hwlock was successfully taken, and an appropriate + * error code otherwise (most notably an -ETIMEDOUT if the @hwlock is still + * busy after @timeout msecs). The function will never sleep. + */ +static inline int hwspin_lock_timeout_irqsave(struct hwspinlock *hwlock, + unsigned int to, unsigned long *flags) +{ + return __hwspin_lock_timeout(hwlock, to, HWLOCK_IRQSTATE, flags); +} + +/** + * hwspin_lock_timeout_irq() - lock hwspinlock, with timeout, disable irqs + * @hwlock: the hwspinlock to be locked + * @to: timeout value in msecs + * + * This function locks the underlying @hwlock. If the @hwlock + * is already taken, the function will busy loop waiting for it to + * be released, but give up when @timeout msecs have elapsed. + * + * Upon a successful return from this function, preemption and local interrupts + * are disabled so the caller must not sleep, and is advised to release the + * hwspinlock as soon as possible. + * + * Returns 0 when the @hwlock was successfully taken, and an appropriate + * error code otherwise (most notably an -ETIMEDOUT if the @hwlock is still + * busy after @timeout msecs). The function will never sleep. + */ +static inline +int hwspin_lock_timeout_irq(struct hwspinlock *hwlock, unsigned int to) +{ + return __hwspin_lock_timeout(hwlock, to, HWLOCK_IRQ, NULL); +} + +/** + * hwspin_lock_timeout() - lock an hwspinlock with timeout limit + * @hwlock: the hwspinlock to be locked + * @to: timeout value in msecs + * + * This function locks the underlying @hwlock. If the @hwlock + * is already taken, the function will busy loop waiting for it to + * be released, but give up when @timeout msecs have elapsed. + * + * Upon a successful return from this function, preemption is disabled + * so the caller must not sleep, and is advised to release the hwspinlock + * as soon as possible. + * This is required in order to minimize remote cores polling on the + * hardware interconnect. + * + * Returns 0 when the @hwlock was successfully taken, and an appropriate + * error code otherwise (most notably an -ETIMEDOUT if the @hwlock is still + * busy after @timeout msecs). The function will never sleep. + */ +static inline +int hwspin_lock_timeout(struct hwspinlock *hwlock, unsigned int to) +{ + return __hwspin_lock_timeout(hwlock, to, 0, NULL); +} + +/** + * hwspin_unlock_irqrestore() - unlock hwspinlock, restore irq state + * @hwlock: a previously-acquired hwspinlock which we want to unlock + * @flags: previous caller's interrupt state to restore + * + * This function will unlock a specific hwspinlock, enable preemption and + * restore the previous state of the local interrupts. It should be used + * to undo, e.g., hwspin_trylock_irqsave(). + * + * @hwlock must be already locked before calling this function: it is a bug + * to call unlock on a @hwlock that is already unlocked. + */ +static inline void hwspin_unlock_irqrestore(struct hwspinlock *hwlock, + unsigned long *flags) +{ + __hwspin_unlock(hwlock, HWLOCK_IRQSTATE, flags); +} + +/** + * hwspin_unlock_irq() - unlock hwspinlock, enable interrupts + * @hwlock: a previously-acquired hwspinlock which we want to unlock + * + * This function will unlock a specific hwspinlock, enable preemption and + * enable local interrupts. Should be used to undo hwspin_lock_irq(). + * + * @hwlock must be already locked (e.g. by hwspin_trylock_irq()) before + * calling this function: it is a bug to call unlock on a @hwlock that is + * already unlocked. + */ +static inline void hwspin_unlock_irq(struct hwspinlock *hwlock) +{ + __hwspin_unlock(hwlock, HWLOCK_IRQ, NULL); +} + +/** + * hwspin_unlock() - unlock hwspinlock + * @hwlock: a previously-acquired hwspinlock which we want to unlock + * + * This function will unlock a specific hwspinlock and enable preemption + * back. + * + * @hwlock must be already locked (e.g. by hwspin_trylock()) before calling + * this function: it is a bug to call unlock on a @hwlock that is already + * unlocked. + */ +static inline void hwspin_unlock(struct hwspinlock *hwlock) +{ + __hwspin_unlock(hwlock, 0, NULL); +} + +#endif /* __LINUX_HWSPINLOCK_H */ -- cgit v1.2.3 From b9f2e9a122a4d51dc13e2e9571034cb2d29dfe44 Mon Sep 17 00:00:00 2001 From: Paul Bolle Date: Mon, 14 Feb 2011 23:06:15 +0100 Subject: USB: usb.h: Make comment match the defines it describes Signed-off-by: Paul Bolle Signed-off-by: Greg Kroah-Hartman --- include/linux/usb/ch11.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/usb/ch11.h b/include/linux/usb/ch11.h index 10ec0699bea4..38c42b013641 100644 --- a/include/linux/usb/ch11.h +++ b/include/linux/usb/ch11.h @@ -132,8 +132,8 @@ struct usb_port_status { /* * wPortChange bit field - * See USB 2.0 spec Table 11-22 - * Bits 0 to 4 shown, bits 5 to 15 are reserved + * See USB 2.0 spec Table 11-22 and USB 2.0 LPM ECN Table-4.10 + * Bits 0 to 5 shown, bits 6 to 15 are reserved */ #define USB_PORT_STAT_C_CONNECTION 0x0001 #define USB_PORT_STAT_C_ENABLE 0x0002 -- cgit v1.2.3 From d8692748408fbec28dfb065f4127307e24187476 Mon Sep 17 00:00:00 2001 From: Hema HK Date: Thu, 17 Feb 2011 12:06:06 +0530 Subject: usb: otg: OMAP4430: Add phy_suspend function pointer to twl4030_usb_data Declare the .phy_suspend function pointer to twl4030_usb_data structure. OMAP internal phy suspend function will be hooked though this function pointer to use in the transceiver driver. Signed-off-by: Hema HK Cc: Tony Lindgren Cc: Paul Walmsley Signed-off-by: Felipe Balbi --- include/linux/i2c/twl.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/i2c/twl.h b/include/linux/i2c/twl.h index 61b9609e55f2..a4bd05b7bd22 100644 --- a/include/linux/i2c/twl.h +++ b/include/linux/i2c/twl.h @@ -600,6 +600,8 @@ struct twl4030_usb_data { int (*phy_power)(struct device *dev, int iD, int on); /* enable/disable phy clocks */ int (*phy_set_clock)(struct device *dev, int on); + /* suspend/resume of phy */ + int (*phy_suspend)(struct device *dev, int suspend); }; struct twl4030_ins { -- cgit v1.2.3 From 9fc3de9c83565fcaa23df74c2fc414bb6e7efb0a Mon Sep 17 00:00:00 2001 From: Arthur Taylor Date: Fri, 4 Feb 2011 13:55:50 -0800 Subject: vt: Add virtual console keyboard mode OFF virtual console: add keyboard mode OFF Add a new mode for the virtual console keyboard OFF in which all input other than shift keys is ignored. Prevents vt input buffers from overflowing when a program opens but doesn't read from a tty, like X11 using evdev for input. Signed-off-by: Arthur Taylor Signed-off-by: Greg Kroah-Hartman --- include/linux/kbd_kern.h | 3 ++- include/linux/kd.h | 1 + 2 files changed, 3 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/kbd_kern.h b/include/linux/kbd_kern.h index 506ad20c18f8..4b0761cc7dd9 100644 --- a/include/linux/kbd_kern.h +++ b/include/linux/kbd_kern.h @@ -50,11 +50,12 @@ struct kbd_struct { #define VC_CAPSLOCK 2 /* capslock mode */ #define VC_KANALOCK 3 /* kanalock mode */ - unsigned char kbdmode:2; /* one 2-bit value */ + unsigned char kbdmode:3; /* one 3-bit value */ #define VC_XLATE 0 /* translate keycodes using keymap */ #define VC_MEDIUMRAW 1 /* medium raw (keycode) mode */ #define VC_RAW 2 /* raw (scancode) mode */ #define VC_UNICODE 3 /* Unicode mode */ +#define VC_OFF 4 /* disabled mode */ unsigned char modeflags:5; #define VC_APPLIC 0 /* application key mode */ diff --git a/include/linux/kd.h b/include/linux/kd.h index 15f2853ea58f..c36d8476db55 100644 --- a/include/linux/kd.h +++ b/include/linux/kd.h @@ -81,6 +81,7 @@ struct unimapinit { #define K_XLATE 0x01 #define K_MEDIUMRAW 0x02 #define K_UNICODE 0x03 +#define K_OFF 0x04 #define KDGKBMODE 0x4B44 /* gets current keyboard mode */ #define KDSKBMODE 0x4B45 /* sets current keyboard mode */ -- cgit v1.2.3 From fcdba07ee390d9d9c15de8b2a17baef689284fcc Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Mon, 7 Feb 2011 19:31:25 +0100 Subject: tty,vcs removing con_buf/conf_buf_mtx seems there's no longer need for using con_buf/conf_buf_mtx as vcs_read/vcs_write buffer for user's data. The do_con_write function, that was the other user of this, is currently using its own kmalloc-ed buffer. Not sure when this got changed, as I was able to find this code in 2.6.9, but it's already gone as far as current git history goes - 2.6.12-rc2. AFAICS there's a behaviour change with the current change. The lseek is not completely mutually exclusive with the vcs_read/vcs_write - the file->f_pos might get updated via lseek callback during the vcs_read/vcs_write processing. I tried to find out if the prefered behaviour is to keep this in sync within read/write/lseek functions, but I did not find any pattern on different places. I guess if user end up calling write/lseek from different threads she should know what she's doing. If needed we could use dedicated fd mutex/buffer. Signed-off-by: Jiri Olsa Signed-off-by: Greg Kroah-Hartman --- include/linux/vt_kern.h | 8 -------- 1 file changed, 8 deletions(-) (limited to 'include/linux') diff --git a/include/linux/vt_kern.h b/include/linux/vt_kern.h index 6625cc1ab758..4d05e14ea60c 100644 --- a/include/linux/vt_kern.h +++ b/include/linux/vt_kern.h @@ -142,14 +142,6 @@ static inline bool vt_force_oops_output(struct vc_data *vc) return false; } -/* - * vc_screen.c shares this temporary buffer with the console write code so that - * we can easily avoid touching user space while holding the console spinlock. - */ - -#define CON_BUF_SIZE (CONFIG_BASE_SMALL ? 256 : PAGE_SIZE) -extern char con_buf[CON_BUF_SIZE]; -extern struct mutex con_buf_mtx; extern char vt_dont_switch; extern int default_utf8; extern int global_cursor_default; -- cgit v1.2.3 From 60b33c133ca0b7c0b6072c87234b63fee6e80558 Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Mon, 14 Feb 2011 16:26:14 +0000 Subject: tiocmget: kill off the passing of the struct file We don't actually need this and it causes problems for internal use of this functionality. Currently there is a single use of the FILE * pointer. That is the serial core which uses it to check tty_hung_up_p. However if that is true then IO_ERROR is also already set so the check may be removed. Signed-off-by: Alan Cox Signed-off-by: Greg Kroah-Hartman --- include/linux/tty_driver.h | 2 +- include/linux/usb/serial.h | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/tty_driver.h b/include/linux/tty_driver.h index c3d43eb4150c..9539d74171db 100644 --- a/include/linux/tty_driver.h +++ b/include/linux/tty_driver.h @@ -271,7 +271,7 @@ struct tty_operations { void (*set_ldisc)(struct tty_struct *tty); void (*wait_until_sent)(struct tty_struct *tty, int timeout); void (*send_xchar)(struct tty_struct *tty, char ch); - int (*tiocmget)(struct tty_struct *tty, struct file *file); + int (*tiocmget)(struct tty_struct *tty); int (*tiocmset)(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear); int (*resize)(struct tty_struct *tty, struct winsize *ws); diff --git a/include/linux/usb/serial.h b/include/linux/usb/serial.h index c9049139a7a5..30b945397d19 100644 --- a/include/linux/usb/serial.h +++ b/include/linux/usb/serial.h @@ -268,7 +268,7 @@ struct usb_serial_driver { int (*chars_in_buffer)(struct tty_struct *tty); void (*throttle)(struct tty_struct *tty); void (*unthrottle)(struct tty_struct *tty); - int (*tiocmget)(struct tty_struct *tty, struct file *file); + int (*tiocmget)(struct tty_struct *tty); int (*tiocmset)(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear); int (*get_icount)(struct tty_struct *tty, -- cgit v1.2.3 From 20b9d17715017ae4dd4ec87fabc36d33b9de708e Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Mon, 14 Feb 2011 16:26:50 +0000 Subject: tiocmset: kill the file pointer argument Doing tiocmget was such fun we should do tiocmset as well for the same reasons Signed-off-by: Alan Cox Signed-off-by: Greg Kroah-Hartman --- include/linux/tty_driver.h | 2 +- include/linux/usb/serial.h | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/tty_driver.h b/include/linux/tty_driver.h index 9539d74171db..5dabaa2e6da3 100644 --- a/include/linux/tty_driver.h +++ b/include/linux/tty_driver.h @@ -272,7 +272,7 @@ struct tty_operations { void (*wait_until_sent)(struct tty_struct *tty, int timeout); void (*send_xchar)(struct tty_struct *tty, char ch); int (*tiocmget)(struct tty_struct *tty); - int (*tiocmset)(struct tty_struct *tty, struct file *file, + int (*tiocmset)(struct tty_struct *tty, unsigned int set, unsigned int clear); int (*resize)(struct tty_struct *tty, struct winsize *ws); int (*set_termiox)(struct tty_struct *tty, struct termiox *tnew); diff --git a/include/linux/usb/serial.h b/include/linux/usb/serial.h index 30b945397d19..c1aa1b243ba3 100644 --- a/include/linux/usb/serial.h +++ b/include/linux/usb/serial.h @@ -269,7 +269,7 @@ struct usb_serial_driver { void (*throttle)(struct tty_struct *tty); void (*unthrottle)(struct tty_struct *tty); int (*tiocmget)(struct tty_struct *tty); - int (*tiocmset)(struct tty_struct *tty, struct file *file, + int (*tiocmset)(struct tty_struct *tty, unsigned int set, unsigned int clear); int (*get_icount)(struct tty_struct *tty, struct serial_icounter_struct *icount); -- cgit v1.2.3 From 00a0d0d65b61241a718d0aee96f46b9a2d93bf26 Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Mon, 14 Feb 2011 16:27:06 +0000 Subject: tty: remove filp from the USB tty ioctls We don't use it so we can trim it from here as we try and stamp the file object dependencies out of the serial code. Signed-off-by: Alan Cox Signed-off-by: Greg Kroah-Hartman --- include/linux/usb/serial.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/usb/serial.h b/include/linux/usb/serial.h index c1aa1b243ba3..00e98ee5fba0 100644 --- a/include/linux/usb/serial.h +++ b/include/linux/usb/serial.h @@ -260,7 +260,7 @@ struct usb_serial_driver { const unsigned char *buf, int count); /* Called only by the tty layer */ int (*write_room)(struct tty_struct *tty); - int (*ioctl)(struct tty_struct *tty, struct file *file, + int (*ioctl)(struct tty_struct *tty, unsigned int cmd, unsigned long arg); void (*set_termios)(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old); -- cgit v1.2.3 From 6caa76b7786891b42b66a0e61e2c2fff2c884620 Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Mon, 14 Feb 2011 16:27:22 +0000 Subject: tty: now phase out the ioctl file pointer for good Only oddities here are a couple of drivers that bogusly called the ldisc helpers instead of returning -ENOIOCTLCMD. Fix the bug and the rest goes away. Signed-off-by: Alan Cox Signed-off-by: Greg Kroah-Hartman --- include/linux/tty.h | 2 +- include/linux/tty_driver.h | 9 ++++----- 2 files changed, 5 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/tty.h b/include/linux/tty.h index 54e4eaaa0561..483df15146d2 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -584,7 +584,7 @@ extern int pcxe_open(struct tty_struct *tty, struct file *filp); /* vt.c */ -extern int vt_ioctl(struct tty_struct *tty, struct file *file, +extern int vt_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg); extern long vt_compat_ioctl(struct tty_struct *tty, struct file * file, diff --git a/include/linux/tty_driver.h b/include/linux/tty_driver.h index 5dabaa2e6da3..9deeac855240 100644 --- a/include/linux/tty_driver.h +++ b/include/linux/tty_driver.h @@ -98,8 +98,7 @@ * * Note: Do not call this function directly, call tty_write_room * - * int (*ioctl)(struct tty_struct *tty, struct file * file, - * unsigned int cmd, unsigned long arg); + * int (*ioctl)(struct tty_struct *tty, unsigned int cmd, unsigned long arg); * * This routine allows the tty driver to implement * device-specific ioctls. If the ioctl number passed in cmd @@ -107,7 +106,7 @@ * * Optional * - * long (*compat_ioctl)(struct tty_struct *tty, struct file * file, + * long (*compat_ioctl)(struct tty_struct *tty,, * unsigned int cmd, unsigned long arg); * * implement ioctl processing for 32 bit process on 64 bit system @@ -256,9 +255,9 @@ struct tty_operations { void (*flush_chars)(struct tty_struct *tty); int (*write_room)(struct tty_struct *tty); int (*chars_in_buffer)(struct tty_struct *tty); - int (*ioctl)(struct tty_struct *tty, struct file * file, + int (*ioctl)(struct tty_struct *tty, unsigned int cmd, unsigned long arg); - long (*compat_ioctl)(struct tty_struct *tty, struct file * file, + long (*compat_ioctl)(struct tty_struct *tty, unsigned int cmd, unsigned long arg); void (*set_termios)(struct tty_struct *tty, struct ktermios * old); void (*throttle)(struct tty_struct * tty); -- cgit v1.2.3 From 94c2273d6c1b65eaaf2a6446c7147bdf6e5ae924 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Thu, 17 Feb 2011 12:02:51 -0800 Subject: tty: fix build error in vt_ioctl.c if CONFIG_COMPAT is enabled This was caused by the previous patch to remove the file pointer from the tty ioctl handler. Cc: Alan Cox Signed-off-by: Greg Kroah-Hartman --- include/linux/tty.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/tty.h b/include/linux/tty.h index 483df15146d2..ef1e0123573b 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -587,7 +587,7 @@ extern int pcxe_open(struct tty_struct *tty, struct file *filp); extern int vt_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg); -extern long vt_compat_ioctl(struct tty_struct *tty, struct file * file, +extern long vt_compat_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg); /* tty_mutex.c */ -- cgit v1.2.3 From 8d075b199b9a66ad90296f898f1f15c0ae1511b8 Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Mon, 14 Feb 2011 16:27:53 +0000 Subject: tty: add a helper for setting termios data from kernel side This basically encapsulates the small bit of locking knowledge needed. While we are at it make sure we blow up on any more abusers and unsafe misuses of ioctl for this kind of stuff. We change the function to return an argument as at some point it needs to honour the POSIX 'I asked for changes but got none of them' error reporting corner case. Signed-off-by: Alan Cox Signed-off-by: Greg Kroah-Hartman --- include/linux/tty.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/tty.h b/include/linux/tty.h index ef1e0123573b..4e53d4641b38 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -448,6 +448,7 @@ extern void tty_encode_baud_rate(struct tty_struct *tty, speed_t ibaud, speed_t obaud); extern void tty_termios_copy_hw(struct ktermios *new, struct ktermios *old); extern int tty_termios_hw_change(struct ktermios *a, struct ktermios *b); +extern int tty_set_termios(struct tty_struct *tty, struct ktermios *kt); extern struct tty_ldisc *tty_ldisc_ref(struct tty_struct *); extern void tty_ldisc_deref(struct tty_ldisc *); -- cgit v1.2.3 From 212b573f5552c60265da721ff9ce32e3462a2cdd Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Micha=C5=82=20Miros=C5=82aw?= Date: Tue, 15 Feb 2011 16:59:16 +0000 Subject: ethtool: enable GSO and GRO by default MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Michał Mirosław Signed-off-by: David S. Miller --- include/linux/netdevice.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index d08ef6538579..168e3ad14daf 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -984,6 +984,9 @@ struct net_device { NETIF_F_SG | NETIF_F_HIGHDMA | \ NETIF_F_FRAGLIST) + /* changeable features with no special hardware requirements */ +#define NETIF_F_SOFT_FEATURES (NETIF_F_GSO | NETIF_F_GRO) + /* Interface index. Unique device identifier */ int ifindex; int iflink; -- cgit v1.2.3 From 0a417704777ed29d0e8c72b7274a328e61248e75 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Micha=C5=82=20Miros=C5=82aw?= Date: Tue, 15 Feb 2011 16:59:17 +0000 Subject: ethtool: factorize get/set_one_feature MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This allows to enable GRO even if RX csum is disabled. GRO will not be used for packets without hardware checksum anyway. Signed-off-by: Michał Mirosław Signed-off-by: David S. Miller --- include/linux/netdevice.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 168e3ad14daf..dede3fdbb4be 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -976,6 +976,12 @@ struct net_device { #define NETIF_F_V6_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IPV6_CSUM) #define NETIF_F_ALL_CSUM (NETIF_F_V4_CSUM | NETIF_F_V6_CSUM) +#define NETIF_F_ALL_TSO (NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_TSO_ECN) + +#define NETIF_F_ALL_TX_OFFLOADS (NETIF_F_ALL_CSUM | NETIF_F_SG | \ + NETIF_F_FRAGLIST | NETIF_F_ALL_TSO | \ + NETIF_F_SCTP_CSUM | NETIF_F_FCOE_CRC) + /* * If one device supports one of these features, then enable them * for all in netdev_increment_features. -- cgit v1.2.3 From 5455c6998d34dc983a8693500e4dffefc3682dc5 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Micha=C5=82=20Miros=C5=82aw?= Date: Tue, 15 Feb 2011 16:59:17 +0000 Subject: net: Introduce new feature setting ops MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This introduces a new framework to handle device features setting. It consists of: - new fields in struct net_device: + hw_features - features that hw/driver supports toggling + wanted_features - features that user wants enabled, when possible - new netdev_ops: + feat = ndo_fix_features(dev, feat) - API checking constraints for enabling features or their combinations + ndo_set_features(dev) - API updating hardware state to match changed dev->features - new ethtool commands: + ETHTOOL_GFEATURES/ETHTOOL_SFEATURES: get/set dev->wanted_features and trigger device reconfiguration if resulting dev->features changed + ETHTOOL_GSTRINGS(ETH_SS_FEATURES): get feature bits names (meaning) Signed-off-by: Michał Mirosław Signed-off-by: David S. Miller --- include/linux/ethtool.h | 85 +++++++++++++++++++++++++++++++++++++++++++++++ include/linux/netdevice.h | 37 +++++++++++++++++++-- 2 files changed, 120 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h index 1908929204a9..806e716bb4fb 100644 --- a/include/linux/ethtool.h +++ b/include/linux/ethtool.h @@ -251,6 +251,7 @@ enum ethtool_stringset { ETH_SS_STATS, ETH_SS_PRIV_FLAGS, ETH_SS_NTUPLE_FILTERS, + ETH_SS_FEATURES, }; /* for passing string sets for data tagging */ @@ -523,6 +524,87 @@ struct ethtool_flash { char data[ETHTOOL_FLASH_MAX_FILENAME]; }; +/* for returning and changing feature sets */ + +/** + * struct ethtool_get_features_block - block with state of 32 features + * @available: mask of changeable features + * @requested: mask of features requested to be enabled if possible + * @active: mask of currently enabled features + * @never_changed: mask of features not changeable for any device + */ +struct ethtool_get_features_block { + __u32 available; + __u32 requested; + __u32 active; + __u32 never_changed; +}; + +/** + * struct ethtool_gfeatures - command to get state of device's features + * @cmd: command number = %ETHTOOL_GFEATURES + * @size: in: number of elements in the features[] array; + * out: number of elements in features[] needed to hold all features + * @features: state of features + */ +struct ethtool_gfeatures { + __u32 cmd; + __u32 size; + struct ethtool_get_features_block features[0]; +}; + +/** + * struct ethtool_set_features_block - block with request for 32 features + * @valid: mask of features to be changed + * @requested: values of features to be changed + */ +struct ethtool_set_features_block { + __u32 valid; + __u32 requested; +}; + +/** + * struct ethtool_sfeatures - command to request change in device's features + * @cmd: command number = %ETHTOOL_SFEATURES + * @size: array size of the features[] array + * @features: feature change masks + */ +struct ethtool_sfeatures { + __u32 cmd; + __u32 size; + struct ethtool_set_features_block features[0]; +}; + +/* + * %ETHTOOL_SFEATURES changes features present in features[].valid to the + * values of corresponding bits in features[].requested. Bits in .requested + * not set in .valid or not changeable are ignored. + * + * Returns %EINVAL when .valid contains undefined or never-changable bits + * or size is not equal to required number of features words (32-bit blocks). + * Returns >= 0 if request was completed; bits set in the value mean: + * %ETHTOOL_F_UNSUPPORTED - there were bits set in .valid that are not + * changeable (not present in %ETHTOOL_GFEATURES' features[].available) + * those bits were ignored. + * %ETHTOOL_F_WISH - some or all changes requested were recorded but the + * resulting state of bits masked by .valid is not equal to .requested. + * Probably there are other device-specific constraints on some features + * in the set. When %ETHTOOL_F_UNSUPPORTED is set, .valid is considered + * here as though ignored bits were cleared. + * + * Meaning of bits in the masks are obtained by %ETHTOOL_GSSET_INFO (number of + * bits in the arrays - always multiple of 32) and %ETHTOOL_GSTRINGS commands + * for ETH_SS_FEATURES string set. First entry in the table corresponds to least + * significant bit in features[0] fields. Empty strings mark undefined features. + */ +enum ethtool_sfeatures_retval_bits { + ETHTOOL_F_UNSUPPORTED__BIT, + ETHTOOL_F_WISH__BIT, +}; + +#define ETHTOOL_F_UNSUPPORTED (1 << ETHTOOL_F_UNSUPPORTED__BIT) +#define ETHTOOL_F_WISH (1 << ETHTOOL_F_WISH__BIT) + #ifdef __KERNEL__ #include @@ -744,6 +826,9 @@ struct ethtool_ops { #define ETHTOOL_GRXFHINDIR 0x00000038 /* Get RX flow hash indir'n table */ #define ETHTOOL_SRXFHINDIR 0x00000039 /* Set RX flow hash indir'n table */ +#define ETHTOOL_GFEATURES 0x0000003a /* Get device offload settings */ +#define ETHTOOL_SFEATURES 0x0000003b /* Change device offload settings */ + /* compatibility with older code */ #define SPARC_ETH_GSET ETHTOOL_GSET #define SPARC_ETH_SSET ETHTOOL_SSET diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index dede3fdbb4be..85f67e225f60 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -791,6 +791,18 @@ struct netdev_tc_txq { * * int (*ndo_del_slave)(struct net_device *dev, struct net_device *slave_dev); * Called to release previously enslaved netdev. + * + * Feature/offload setting functions. + * u32 (*ndo_fix_features)(struct net_device *dev, u32 features); + * Adjusts the requested feature flags according to device-specific + * constraints, and returns the resulting flags. Must not modify + * the device state. + * + * int (*ndo_set_features)(struct net_device *dev, u32 features); + * Called to update device configuration to new features. Passed + * feature set might be less than what was returned by ndo_fix_features()). + * Must return >0 or -errno if it changed dev->features itself. + * */ #define HAVE_NET_DEVICE_OPS struct net_device_ops { @@ -874,6 +886,10 @@ struct net_device_ops { struct net_device *slave_dev); int (*ndo_del_slave)(struct net_device *dev, struct net_device *slave_dev); + u32 (*ndo_fix_features)(struct net_device *dev, + u32 features); + int (*ndo_set_features)(struct net_device *dev, + u32 features); }; /* @@ -925,12 +941,18 @@ struct net_device { struct list_head napi_list; struct list_head unreg_list; - /* Net device features */ + /* currently active device features */ u32 features; - + /* user-changeable features */ + u32 hw_features; + /* user-requested features */ + u32 wanted_features; /* VLAN feature mask */ u32 vlan_features; + /* Net device feature bits; if you change something, + * also update netdev_features_strings[] in ethtool.c */ + #define NETIF_F_SG 1 /* Scatter/gather IO. */ #define NETIF_F_IP_CSUM 2 /* Can checksum TCP/UDP over IPv4. */ #define NETIF_F_NO_CSUM 4 /* Does not require checksum. F.e. loopack. */ @@ -966,6 +988,12 @@ struct net_device { #define NETIF_F_TSO6 (SKB_GSO_TCPV6 << NETIF_F_GSO_SHIFT) #define NETIF_F_FSO (SKB_GSO_FCOE << NETIF_F_GSO_SHIFT) + /* Features valid for ethtool to change */ + /* = all defined minus driver/device-class-related */ +#define NETIF_F_NEVER_CHANGE (NETIF_F_HIGHDMA | NETIF_F_VLAN_CHALLENGED | \ + NETIF_F_LLTX | NETIF_F_NETNS_LOCAL) +#define NETIF_F_ETHTOOL_BITS (0x1f3fffff & ~NETIF_F_NEVER_CHANGE) + /* List of features with software fallbacks. */ #define NETIF_F_GSO_SOFTWARE (NETIF_F_TSO | NETIF_F_TSO_ECN | \ NETIF_F_TSO6 | NETIF_F_UFO) @@ -2428,8 +2456,13 @@ extern char *netdev_drivername(const struct net_device *dev, char *buffer, int l extern void linkwatch_run_queue(void); +static inline u32 netdev_get_wanted_features(struct net_device *dev) +{ + return (dev->features & ~dev->hw_features) | dev->wanted_features; +} u32 netdev_increment_features(u32 all, u32 one, u32 mask); u32 netdev_fix_features(struct net_device *dev, u32 features); +void netdev_update_features(struct net_device *dev); void netif_stacked_transfer_operstate(const struct net_device *rootdev, struct net_device *dev); -- cgit v1.2.3 From e83d360d9a7e5d71d55c13e96b19109a2ea23bf0 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Micha=C5=82=20Miros=C5=82aw?= Date: Tue, 15 Feb 2011 16:59:18 +0000 Subject: net: introduce NETIF_F_RXCSUM MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Introduce NETIF_F_RXCSUM to replace device-private flags for RX checksum offload. Integrate it with ndo_fix_features. ethtool_op_get_rx_csum() is removed altogether as nothing in-tree uses it. Signed-off-by: Michał Mirosław Signed-off-by: David S. Miller --- include/linux/ethtool.h | 1 - include/linux/netdevice.h | 5 ++++- 2 files changed, 4 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h index 806e716bb4fb..54d776c2c1b5 100644 --- a/include/linux/ethtool.h +++ b/include/linux/ethtool.h @@ -625,7 +625,6 @@ struct net_device; /* Some generic methods drivers may use in their ethtool_ops */ u32 ethtool_op_get_link(struct net_device *dev); -u32 ethtool_op_get_rx_csum(struct net_device *dev); u32 ethtool_op_get_tx_csum(struct net_device *dev); int ethtool_op_set_tx_csum(struct net_device *dev, u32 data); int ethtool_op_set_tx_hw_csum(struct net_device *dev, u32 data); diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 85f67e225f60..ffe56c16df8a 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -977,6 +977,7 @@ struct net_device { #define NETIF_F_FCOE_MTU (1 << 26) /* Supports max FCoE MTU, 2158 bytes*/ #define NETIF_F_NTUPLE (1 << 27) /* N-tuple filters supported */ #define NETIF_F_RXHASH (1 << 28) /* Receive hashing offload */ +#define NETIF_F_RXCSUM (1 << 29) /* Receive checksumming offload */ /* Segmentation offload features */ #define NETIF_F_GSO_SHIFT 16 @@ -992,7 +993,7 @@ struct net_device { /* = all defined minus driver/device-class-related */ #define NETIF_F_NEVER_CHANGE (NETIF_F_HIGHDMA | NETIF_F_VLAN_CHALLENGED | \ NETIF_F_LLTX | NETIF_F_NETNS_LOCAL) -#define NETIF_F_ETHTOOL_BITS (0x1f3fffff & ~NETIF_F_NEVER_CHANGE) +#define NETIF_F_ETHTOOL_BITS (0x3f3fffff & ~NETIF_F_NEVER_CHANGE) /* List of features with software fallbacks. */ #define NETIF_F_GSO_SOFTWARE (NETIF_F_TSO | NETIF_F_TSO_ECN | \ @@ -2510,6 +2511,8 @@ static inline int dev_ethtool_get_settings(struct net_device *dev, static inline u32 dev_ethtool_get_rx_csum(struct net_device *dev) { + if (dev->hw_features & NETIF_F_RXCSUM) + return !!(dev->features & NETIF_F_RXCSUM); if (!dev->ethtool_ops || !dev->ethtool_ops->get_rx_csum) return 0; return dev->ethtool_ops->get_rx_csum(dev); -- cgit v1.2.3 From 6e57b1d6a8d8ed1998229b71c102be1997e397c6 Mon Sep 17 00:00:00 2001 From: John Stultz Date: Fri, 11 Feb 2011 17:45:40 -0800 Subject: RTC: Revert UIE emulation removal MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Uwe pointed out that my alarm based UIE emulation is not sufficient to replace the older timer/polling based UIE emulation on devices where there is no alarm irq. This causes rtc devices without alarms to return -EINVAL to UIE ioctls. The fix is to re-instate the old timer/polling method for devices without alarm irqs. This patch reverts the following commits: 042620a018afcfba1d678062b62e46 - Remove UIE emulation 1daeddd5962acad1bea55e524fc0fa - Cleanup removed UIE emulation declaration b5cc8ca1c9c3a37eaddf709b2fd3e1 - Remove Kconfig symbol for UIE emulation The emulation mode will still need to be wired-in with a following patch before it will work. CC: Uwe Kleine-König CC: Thomas Gleixner Reported-by: Uwe Kleine-König Signed-off-by: John Stultz --- include/linux/rtc.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'include/linux') diff --git a/include/linux/rtc.h b/include/linux/rtc.h index a0b639f8e805..80408e711bed 100644 --- a/include/linux/rtc.h +++ b/include/linux/rtc.h @@ -203,6 +203,18 @@ struct rtc_device struct hrtimer pie_timer; /* sub second exp, so needs hrtimer */ int pie_enabled; struct work_struct irqwork; + + +#ifdef CONFIG_RTC_INTF_DEV_UIE_EMUL + struct work_struct uie_task; + struct timer_list uie_timer; + /* Those fields are protected by rtc->irq_lock */ + unsigned int oldsecs; + unsigned int uie_irq_active:1; + unsigned int stop_uie_polling:1; + unsigned int uie_task_active:1; + unsigned int uie_timer_active:1; +#endif }; #define to_rtc_device(d) container_of(d, struct rtc_device, dev) @@ -235,6 +247,8 @@ extern int rtc_irq_set_freq(struct rtc_device *rtc, struct rtc_task *task, int freq); extern int rtc_update_irq_enable(struct rtc_device *rtc, unsigned int enabled); extern int rtc_alarm_irq_enable(struct rtc_device *rtc, unsigned int enabled); +extern int rtc_dev_update_irq_enable_emul(struct rtc_device *rtc, + unsigned int enabled); void rtc_aie_update_irq(void *private); void rtc_uie_update_irq(void *private); -- cgit v1.2.3 From 456d66ecd09e3bc326b93174745faafb6ac378d6 Mon Sep 17 00:00:00 2001 From: John Stultz Date: Fri, 11 Feb 2011 18:15:23 -0800 Subject: RTC: Re-enable UIE timer/polling emulation MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This patch re-enables UIE timer/polling emulation for rtc devices that do not support alarm irqs. CC: Uwe Kleine-König CC: Thomas Gleixner Reported-by: Uwe Kleine-König Tested-by: Uwe Kleine-König Signed-off-by: John Stultz --- include/linux/rtc.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/rtc.h b/include/linux/rtc.h index 80408e711bed..89c3e5182991 100644 --- a/include/linux/rtc.h +++ b/include/linux/rtc.h @@ -250,6 +250,7 @@ extern int rtc_alarm_irq_enable(struct rtc_device *rtc, unsigned int enabled); extern int rtc_dev_update_irq_enable_emul(struct rtc_device *rtc, unsigned int enabled); +void rtc_handle_legacy_irq(struct rtc_device *rtc, int num, int mode); void rtc_aie_update_irq(void *private); void rtc_uie_update_irq(void *private); enum hrtimer_restart rtc_pie_update_irq(struct hrtimer *timer); -- cgit v1.2.3 From 1435ca0fc1a269f9496343e24223a0fc430aff7a Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Mon, 7 Feb 2011 10:46:58 +0200 Subject: OMAP: OneNAND: fix 104MHz support 104MHz needs a latency of 8 clock cycles and the VHF flag must be set. Also t_rdyo is specified as "not applicable" so pick a lower value, and force at least 1 clk between AVD High to OE Low. Signed-off-by: Adrian Hunter Signed-off-by: Tony Lindgren --- include/linux/mtd/onenand_regs.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/mtd/onenand_regs.h b/include/linux/mtd/onenand_regs.h index cd6f3b431195..d60130f88eed 100644 --- a/include/linux/mtd/onenand_regs.h +++ b/include/linux/mtd/onenand_regs.h @@ -168,6 +168,7 @@ #define ONENAND_SYS_CFG1_INT (1 << 6) #define ONENAND_SYS_CFG1_IOBE (1 << 5) #define ONENAND_SYS_CFG1_RDY_CONF (1 << 4) +#define ONENAND_SYS_CFG1_VHF (1 << 3) #define ONENAND_SYS_CFG1_HF (1 << 2) #define ONENAND_SYS_CFG1_SYNC_WRITE (1 << 1) -- cgit v1.2.3 From 647b2d9c61fe9a842dd89eb01b5f01e9d437993c Mon Sep 17 00:00:00 2001 From: Hema HK Date: Thu, 17 Feb 2011 12:06:09 +0530 Subject: usb: otg: TWL6030 Save the last event in otg_transceiver Save the last event in the otg_transceiver so that it can used in the musb driver and gadget driver to configure the musb and enable the vbus for host mode and OTG mode, if the device is connected during boot. Signed-off-by: Hema HK Cc: Tony Lindgren Cc: Paul Walmsley Signed-off-by: Felipe Balbi --- include/linux/usb/otg.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/usb/otg.h b/include/linux/usb/otg.h index a1a1e7a73ec9..da511eec3cb8 100644 --- a/include/linux/usb/otg.h +++ b/include/linux/usb/otg.h @@ -66,6 +66,7 @@ struct otg_transceiver { u8 default_a; enum usb_otg_state state; + enum usb_xceiv_events last_event; struct usb_bus *host; struct usb_gadget *gadget; -- cgit v1.2.3 From cccad6d4b103e53fb3d1fc1467f654ecb572d047 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Wed, 29 Sep 2010 10:55:49 +0300 Subject: usb: otg: notifier: switch to atomic notifier most of our notifications, will be called from IRQ context, so an atomic notifier suits the job better. Signed-off-by: Felipe Balbi --- include/linux/usb/otg.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/usb/otg.h b/include/linux/usb/otg.h index da511eec3cb8..6e40718f5abe 100644 --- a/include/linux/usb/otg.h +++ b/include/linux/usb/otg.h @@ -75,7 +75,7 @@ struct otg_transceiver { void __iomem *io_priv; /* for notification of usb_xceiv_events */ - struct blocking_notifier_head notifier; + struct atomic_notifier_head notifier; /* to pass extra port status to the root hub */ u16 port_status; @@ -235,13 +235,13 @@ otg_start_srp(struct otg_transceiver *otg) static inline int otg_register_notifier(struct otg_transceiver *otg, struct notifier_block *nb) { - return blocking_notifier_chain_register(&otg->notifier, nb); + return atomic_notifier_chain_register(&otg->notifier, nb); } static inline void otg_unregister_notifier(struct otg_transceiver *otg, struct notifier_block *nb) { - blocking_notifier_chain_unregister(&otg->notifier, nb); + atomic_notifier_chain_unregister(&otg->notifier, nb); } /* for OTG controller drivers (and maybe other stuff) */ -- cgit v1.2.3 From b38360a284f8acab4ae431b387c05a4e19ff4129 Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Sun, 6 Feb 2011 21:57:18 -0800 Subject: kobject.h: fix build when CONFIG_HOTPLUG is disabled When CONFIG_HOTPLUG is not enabled, the inline function add_uevent_var() needs to have its __attribute__ before the function name/parameters, otherwise there are syntax errors. linux-next-20110207/include/linux/kobject.h:232: error: expected ',' or ';' before '{' token Signed-off-by: Randy Dunlap Signed-off-by: Greg Kroah-Hartman --- include/linux/kobject.h | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/kobject.h b/include/linux/kobject.h index 15e82c132f78..9229b64ee3aa 100644 --- a/include/linux/kobject.h +++ b/include/linux/kobject.h @@ -226,9 +226,8 @@ static inline int kobject_uevent_env(struct kobject *kobj, char *envp[]) { return 0; } -static inline int add_uevent_var(struct kobj_uevent_env *env, - const char *format, ...) - __attribute__((format(printf, 2, 3))) +static inline __attribute__((format(printf, 2, 3))) +int add_uevent_var(struct kobj_uevent_env *env, const char *format, ...) { return 0; } static inline int kobject_action_type(const char *buf, size_t count, -- cgit v1.2.3 From 71d642908d4e8e7a2a4a6e0490432e719ff466d5 Mon Sep 17 00:00:00 2001 From: Marc Kleine-Budde Date: Wed, 16 Feb 2011 23:23:27 +0100 Subject: Driver core: convert platform_{get,set}_drvdata to static inline functions MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This patch converts the macros for platform_{get,set}_drvdata to static inline functions to add typechecking. Signed-off-by: Marc Kleine-Budde Acked-by: Uwe Kleine-König Signed-off-by: Greg Kroah-Hartman --- include/linux/platform_device.h | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/platform_device.h b/include/linux/platform_device.h index 2e700ec0601f..d96db9825708 100644 --- a/include/linux/platform_device.h +++ b/include/linux/platform_device.h @@ -130,8 +130,15 @@ extern void platform_driver_unregister(struct platform_driver *); extern int platform_driver_probe(struct platform_driver *driver, int (*probe)(struct platform_device *)); -#define platform_get_drvdata(_dev) dev_get_drvdata(&(_dev)->dev) -#define platform_set_drvdata(_dev,data) dev_set_drvdata(&(_dev)->dev, (data)) +static inline void *platform_get_drvdata(const struct platform_device *pdev) +{ + return dev_get_drvdata(&pdev->dev); +} + +static inline void platform_set_drvdata(struct platform_device *pdev, void *data) +{ + dev_set_drvdata(&pdev->dev, data); +} extern struct platform_device *platform_create_bundle(struct platform_driver *driver, int (*probe)(struct platform_device *), -- cgit v1.2.3 From 3c18d4de86e4a7f93815c081e50e0543fa27200f Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Fri, 18 Feb 2011 11:32:28 -0800 Subject: Expand CONFIG_DEBUG_LIST to several other list operations When list debugging is enabled, we aim to readably show list corruption errors, and the basic list_add/list_del operations end up having extra debugging code in them to do some basic validation of the list entries. However, "list_del_init()" and "list_move[_tail]()" ended up avoiding the debug code due to how they were written. This fixes that. So the _next_ time we have list_move() problems with stale list entries, we'll hopefully have an easier time finding them.. Signed-off-by: Linus Torvalds --- include/linux/list.h | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/list.h b/include/linux/list.h index 9a5f8a71810c..3a54266a1e85 100644 --- a/include/linux/list.h +++ b/include/linux/list.h @@ -96,6 +96,11 @@ static inline void __list_del(struct list_head * prev, struct list_head * next) * in an undefined state. */ #ifndef CONFIG_DEBUG_LIST +static inline void __list_del_entry(struct list_head *entry) +{ + __list_del(entry->prev, entry->next); +} + static inline void list_del(struct list_head *entry) { __list_del(entry->prev, entry->next); @@ -103,6 +108,7 @@ static inline void list_del(struct list_head *entry) entry->prev = LIST_POISON2; } #else +extern void __list_del_entry(struct list_head *entry); extern void list_del(struct list_head *entry); #endif @@ -135,7 +141,7 @@ static inline void list_replace_init(struct list_head *old, */ static inline void list_del_init(struct list_head *entry) { - __list_del(entry->prev, entry->next); + __list_del_entry(entry); INIT_LIST_HEAD(entry); } @@ -146,7 +152,7 @@ static inline void list_del_init(struct list_head *entry) */ static inline void list_move(struct list_head *list, struct list_head *head) { - __list_del(list->prev, list->next); + __list_del_entry(list); list_add(list, head); } @@ -158,7 +164,7 @@ static inline void list_move(struct list_head *list, struct list_head *head) static inline void list_move_tail(struct list_head *list, struct list_head *head) { - __list_del(list->prev, list->next); + __list_del_entry(list); list_add_tail(list, head); } -- cgit v1.2.3 From fd23c3b31107e2fc483301ee923d8a1db14e53f4 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Fri, 18 Feb 2011 12:42:28 -0800 Subject: ipv4: Add hash table of interface addresses. This will be used to optimize __ip_dev_find() and friends. With help from Eric Dumazet. Signed-off-by: David S. Miller --- include/linux/inetdevice.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/inetdevice.h b/include/linux/inetdevice.h index ae8fdc54e0c0..5f8146695b7f 100644 --- a/include/linux/inetdevice.h +++ b/include/linux/inetdevice.h @@ -144,6 +144,7 @@ static inline void ipv4_devconf_setall(struct in_device *in_dev) #define IN_DEV_ARP_NOTIFY(in_dev) IN_DEV_MAXCONF((in_dev), ARP_NOTIFY) struct in_ifaddr { + struct hlist_node hash; struct in_ifaddr *ifa_next; struct in_device *ifa_dev; struct rcu_head rcu_head; -- cgit v1.2.3 From f2f1794835f1d8900d2b15d114c54e70c849809b Mon Sep 17 00:00:00 2001 From: Tony SIM Date: Tue, 15 Feb 2011 19:10:27 +0900 Subject: staging: iio: ak8975: add platform data. As some of the platform not support irq_to_gpio, we pass gpio port by platform data. Signed-off-by: Tony SIM Signed-off-by: Andrew Chew Signed-off-by: Greg Kroah-Hartman --- include/linux/input/ak8975.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) create mode 100644 include/linux/input/ak8975.h (limited to 'include/linux') diff --git a/include/linux/input/ak8975.h b/include/linux/input/ak8975.h new file mode 100644 index 000000000000..25d41eb10c3e --- /dev/null +++ b/include/linux/input/ak8975.h @@ -0,0 +1,20 @@ +/* + * ak8975 platform support + * + * Copyright (C) 2010 Renesas Solutions Corp. + * + * Author: Tony SIM + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef _AK8975_H +#define _AK8975_H + +struct ak8975_platform_data { + int gpio; +}; + +#endif -- cgit v1.2.3 From 8b2988c13da00ac9d03f1764fdb26180c188f9e0 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Wed, 16 Feb 2011 13:58:26 +0100 Subject: ssb: remove invalid define SSB_TMSLOW_PHYCLK MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit It was incorrectly introduced in d2730b2a6a019d14455556019d744ab051e6554b. We have already fixed function to use correct define, but forgot remove old one. Signed-off-by: Rafał Miłecki Cc: Gábor Stefanik Signed-off-by: John W. Linville --- include/linux/ssb/ssb_regs.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/ssb/ssb_regs.h b/include/linux/ssb/ssb_regs.h index df9211a84634..9b1125bea1fc 100644 --- a/include/linux/ssb/ssb_regs.h +++ b/include/linux/ssb/ssb_regs.h @@ -97,7 +97,6 @@ #define SSB_TMSLOW_RESET 0x00000001 /* Reset */ #define SSB_TMSLOW_REJECT_22 0x00000002 /* Reject (Backplane rev 2.2) */ #define SSB_TMSLOW_REJECT_23 0x00000004 /* Reject (Backplane rev 2.3) */ -#define SSB_TMSLOW_PHYCLK 0x00000010 /* MAC PHY Clock Control Enable */ #define SSB_TMSLOW_CLOCK 0x00010000 /* Clock Enable */ #define SSB_TMSLOW_FGC 0x00020000 /* Force Gated Clocks On */ #define SSB_TMSLOW_PE 0x40000000 /* Power Management Enable */ -- cgit v1.2.3 From b1a1bcf714c4d79f7872a34138d100941ebb0a0b Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Thu, 17 Feb 2011 01:50:50 +0100 Subject: ssb: when needed, reject IM input while disabling device MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Rafał Miłecki Signed-off-by: John W. Linville --- include/linux/ssb/ssb_regs.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ssb/ssb_regs.h b/include/linux/ssb/ssb_regs.h index 9b1125bea1fc..402955ae48ce 100644 --- a/include/linux/ssb/ssb_regs.h +++ b/include/linux/ssb/ssb_regs.h @@ -85,6 +85,8 @@ #define SSB_IMSTATE_AP_RSV 0x00000030 /* Reserved */ #define SSB_IMSTATE_IBE 0x00020000 /* In Band Error */ #define SSB_IMSTATE_TO 0x00040000 /* Timeout */ +#define SSB_IMSTATE_BUSY 0x01800000 /* Busy (Backplane rev >= 2.3 only) */ +#define SSB_IMSTATE_REJECT 0x02000000 /* Reject (Backplane rev >= 2.3 only) */ #define SSB_INTVEC 0x0F94 /* SB Interrupt Mask */ #define SSB_INTVEC_PCI 0x00000001 /* Enable interrupts for PCI */ #define SSB_INTVEC_ENET0 0x00000002 /* Enable interrupts for enet 0 */ -- cgit v1.2.3 From 9c49e4ab84dd46769e7fd9773946e10c95bab680 Mon Sep 17 00:00:00 2001 From: Russell King Date: Wed, 19 Jan 2011 21:13:33 +0000 Subject: ARM: clcd: use amba_part() to determine if we have a PL110 primecell Instead of matching the entire peripheral ID, match against just the part number using the amba_xxx() macros. Acked-by: Catalin Marinas Signed-off-by: Russell King --- include/linux/amba/clcd.h | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/amba/clcd.h b/include/linux/amba/clcd.h index be33b3affc8a..2e511219a161 100644 --- a/include/linux/amba/clcd.h +++ b/include/linux/amba/clcd.h @@ -212,12 +212,12 @@ static inline void clcdfb_decode(struct clcd_fb *fb, struct clcd_regs *regs) break; case 16: /* - * PL110 cannot choose between 5551 and 565 modes in - * its control register + * PL110 cannot choose between 5551 and 565 modes in its + * control register. It is possible to use 565 with + * custom external wiring. */ - if ((fb->dev->periphid & 0x000fffff) == 0x00041110) - val |= CNTL_LCDBPP16; - else if (fb->fb.var.green.length == 5) + if (amba_part(fb->dev) == 0x110 || + fb->fb.var.green.length == 5) val |= CNTL_LCDBPP16; else val |= CNTL_LCDBPP16_565; -- cgit v1.2.3 From 7b4e9ced69a120e7e7446e3303d2307aa29d891c Mon Sep 17 00:00:00 2001 From: Russell King Date: Fri, 21 Jan 2011 14:03:28 +0000 Subject: ARM: clcd: add method for describing display capabilities The ARM CLCD PL110 controller in TFT mode provides two output formats based on whether the controller is in 24bpp mode or not - either 5551 or 888. PL111 augments this with a 444 and 565 modes. Some implementations provide an external MUX on the PL110 output to reassign the bits to achieve 565 mode. Provide a system of capability flags to allow the CLCD driver to work out what is supported by each panel and board, and therefore which display formats are permitted. Acked-by: Catalin Marinas Signed-off-by: Russell King --- include/linux/amba/clcd.h | 82 +++++++++++++++++++++++++++++++++++++---------- 1 file changed, 65 insertions(+), 17 deletions(-) (limited to 'include/linux') diff --git a/include/linux/amba/clcd.h b/include/linux/amba/clcd.h index 2e511219a161..24d26efd1432 100644 --- a/include/linux/amba/clcd.h +++ b/include/linux/amba/clcd.h @@ -53,6 +53,7 @@ #define CNTL_LCDBPP8 (3 << 1) #define CNTL_LCDBPP16 (4 << 1) #define CNTL_LCDBPP16_565 (6 << 1) +#define CNTL_LCDBPP16_444 (7 << 1) #define CNTL_LCDBPP24 (5 << 1) #define CNTL_LCDBW (1 << 4) #define CNTL_LCDTFT (1 << 5) @@ -66,6 +67,32 @@ #define CNTL_LDMAFIFOTIME (1 << 15) #define CNTL_WATERMARK (1 << 16) +enum { + /* individual formats */ + CLCD_CAP_RGB444 = (1 << 0), + CLCD_CAP_RGB5551 = (1 << 1), + CLCD_CAP_RGB565 = (1 << 2), + CLCD_CAP_RGB888 = (1 << 3), + CLCD_CAP_BGR444 = (1 << 4), + CLCD_CAP_BGR5551 = (1 << 5), + CLCD_CAP_BGR565 = (1 << 6), + CLCD_CAP_BGR888 = (1 << 7), + + /* connection layouts */ + CLCD_CAP_444 = CLCD_CAP_RGB444 | CLCD_CAP_BGR444, + CLCD_CAP_5551 = CLCD_CAP_RGB5551 | CLCD_CAP_BGR5551, + CLCD_CAP_565 = CLCD_CAP_RGB565 | CLCD_CAP_BGR565, + CLCD_CAP_888 = CLCD_CAP_RGB888 | CLCD_CAP_BGR888, + + /* red/blue ordering */ + CLCD_CAP_RGB = CLCD_CAP_RGB444 | CLCD_CAP_RGB5551 | + CLCD_CAP_RGB565 | CLCD_CAP_RGB888, + CLCD_CAP_BGR = CLCD_CAP_BGR444 | CLCD_CAP_BGR5551 | + CLCD_CAP_BGR565 | CLCD_CAP_BGR888, + + CLCD_CAP_ALL = CLCD_CAP_BGR | CLCD_CAP_RGB, +}; + struct clcd_panel { struct fb_videomode mode; signed short width; /* width in mm */ @@ -73,6 +100,7 @@ struct clcd_panel { u32 tim2; u32 tim3; u32 cntl; + u32 caps; unsigned int bpp:8, fixedtimings:1, grayscale:1; @@ -96,6 +124,11 @@ struct clcd_fb; struct clcd_board { const char *name; + /* + * Optional. Hardware capability flags. + */ + u32 caps; + /* * Optional. Check whether the var structure is acceptable * for this display. @@ -155,34 +188,35 @@ struct clcd_fb { static inline void clcdfb_decode(struct clcd_fb *fb, struct clcd_regs *regs) { + struct fb_var_screeninfo *var = &fb->fb.var; u32 val, cpl; /* * Program the CLCD controller registers and start the CLCD */ - val = ((fb->fb.var.xres / 16) - 1) << 2; - val |= (fb->fb.var.hsync_len - 1) << 8; - val |= (fb->fb.var.right_margin - 1) << 16; - val |= (fb->fb.var.left_margin - 1) << 24; + val = ((var->xres / 16) - 1) << 2; + val |= (var->hsync_len - 1) << 8; + val |= (var->right_margin - 1) << 16; + val |= (var->left_margin - 1) << 24; regs->tim0 = val; - val = fb->fb.var.yres; + val = var->yres; if (fb->panel->cntl & CNTL_LCDDUAL) val /= 2; val -= 1; - val |= (fb->fb.var.vsync_len - 1) << 10; - val |= fb->fb.var.lower_margin << 16; - val |= fb->fb.var.upper_margin << 24; + val |= (var->vsync_len - 1) << 10; + val |= var->lower_margin << 16; + val |= var->upper_margin << 24; regs->tim1 = val; val = fb->panel->tim2; - val |= fb->fb.var.sync & FB_SYNC_HOR_HIGH_ACT ? 0 : TIM2_IHS; - val |= fb->fb.var.sync & FB_SYNC_VERT_HIGH_ACT ? 0 : TIM2_IVS; + val |= var->sync & FB_SYNC_HOR_HIGH_ACT ? 0 : TIM2_IHS; + val |= var->sync & FB_SYNC_VERT_HIGH_ACT ? 0 : TIM2_IVS; - cpl = fb->fb.var.xres_virtual; + cpl = var->xres_virtual; if (fb->panel->cntl & CNTL_LCDTFT) /* TFT */ /* / 1 */; - else if (!fb->fb.var.grayscale) /* STN color */ + else if (!var->grayscale) /* STN color */ cpl = cpl * 8 / 3; else if (fb->panel->cntl & CNTL_LCDMONO8) /* STN monochrome, 8bit */ cpl /= 8; @@ -194,10 +228,22 @@ static inline void clcdfb_decode(struct clcd_fb *fb, struct clcd_regs *regs) regs->tim3 = fb->panel->tim3; val = fb->panel->cntl; - if (fb->fb.var.grayscale) + if (var->grayscale) val |= CNTL_LCDBW; - switch (fb->fb.var.bits_per_pixel) { + if (fb->panel->caps && fb->board->caps && + var->bits_per_pixel >= 16) { + /* + * if board and panel supply capabilities, we can support + * changing BGR/RGB depending on supplied parameters + */ + if (var->red.offset == 0) + val &= ~CNTL_BGR; + else + val |= CNTL_BGR; + } + + switch (var->bits_per_pixel) { case 1: val |= CNTL_LCDBPP1; break; @@ -217,10 +263,12 @@ static inline void clcdfb_decode(struct clcd_fb *fb, struct clcd_regs *regs) * custom external wiring. */ if (amba_part(fb->dev) == 0x110 || - fb->fb.var.green.length == 5) + var->green.length == 5) val |= CNTL_LCDBPP16; - else + else if (var->green.length == 6) val |= CNTL_LCDBPP16_565; + else + val |= CNTL_LCDBPP16_444; break; case 32: val |= CNTL_LCDBPP24; @@ -228,7 +276,7 @@ static inline void clcdfb_decode(struct clcd_fb *fb, struct clcd_regs *regs) } regs->cntl = val; - regs->pixclock = fb->fb.var.pixclock; + regs->pixclock = var->pixclock; } static inline int clcdfb_check(struct clcd_fb *fb, struct fb_var_screeninfo *var) -- cgit v1.2.3 From a0cd9ca2b907d7ee26575e7b63ac92dad768a75e Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Thu, 10 Feb 2011 11:36:33 +0100 Subject: genirq: Namespace cleanup The irq namespace has become quite convoluted. My bad. Clean it up and deprecate the old functions. All new functions follow the scheme: irq number based: irq_set/get/xxx/_xxx(unsigned int irq, ...) irq_data based: irq_data_set/get/xxx/_xxx(struct irq_data *d, ....) irq_desc based: irq_desc_get_xxx(struct irq_desc *desc) Signed-off-by: Thomas Gleixner --- include/linux/interrupt.h | 14 +++++++-- include/linux/irq.h | 79 ++++++++++++++++++++++++++++++++++++++--------- include/linux/irqdesc.h | 44 +++++++++++++++++++++++--- 3 files changed, 116 insertions(+), 21 deletions(-) (limited to 'include/linux') diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h index 56b7c97aaf0a..7834726dd95b 100644 --- a/include/linux/interrupt.h +++ b/include/linux/interrupt.h @@ -346,16 +346,24 @@ static inline void enable_irq_lockdep_irqrestore(unsigned int irq, unsigned long } /* IRQ wakeup (PM) control: */ -extern int set_irq_wake(unsigned int irq, unsigned int on); +extern int irq_set_irq_wake(unsigned int irq, unsigned int on); + +#ifndef CONFIG_GENERIC_HARDIRQS_NO_COMPAT +/* Please do not use: Use the replacement functions instead */ +static inline int set_irq_wake(unsigned int irq, unsigned int on) +{ + return irq_set_irq_wake(irq, on); +} +#endif static inline int enable_irq_wake(unsigned int irq) { - return set_irq_wake(irq, 1); + return irq_set_irq_wake(irq, 1); } static inline int disable_irq_wake(unsigned int irq) { - return set_irq_wake(irq, 0); + return irq_set_irq_wake(irq, 0); } #else /* !CONFIG_GENERIC_HARDIRQS */ diff --git a/include/linux/irq.h b/include/linux/irq.h index 80fcb53057bc..e9f847d56c4d 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -292,8 +292,7 @@ set_irq_handler(unsigned int irq, irq_flow_handler_t handle) * IRQ_NOREQUEST and IRQ_NOPROBE) */ static inline void -set_irq_chained_handler(unsigned int irq, - irq_flow_handler_t handle) +set_irq_chained_handler(unsigned int irq, irq_flow_handler_t handle) { __set_irq_handler(irq, handle, 1, NULL); } @@ -312,12 +311,12 @@ static inline void irq_clear_status_flags(unsigned int irq, unsigned long clr) irq_modify_status(irq, clr, 0); } -static inline void set_irq_noprobe(unsigned int irq) +static inline void irq_set_noprobe(unsigned int irq) { irq_modify_status(irq, 0, IRQ_NOPROBE); } -static inline void set_irq_probe(unsigned int irq) +static inline void irq_set_probe(unsigned int irq) { irq_modify_status(irq, IRQ_NOPROBE, 0); } @@ -338,14 +337,14 @@ static inline void dynamic_irq_init(unsigned int irq) } /* Set/get chip/data for an IRQ: */ -extern int set_irq_chip(unsigned int irq, struct irq_chip *chip); -extern int set_irq_data(unsigned int irq, void *data); -extern int set_irq_chip_data(unsigned int irq, void *data); -extern int set_irq_type(unsigned int irq, unsigned int type); -extern int set_irq_msi(unsigned int irq, struct msi_desc *entry); +extern int irq_set_chip(unsigned int irq, struct irq_chip *chip); +extern int irq_set_handler_data(unsigned int irq, void *data); +extern int irq_set_chip_data(unsigned int irq, void *data); +extern int irq_set_irq_type(unsigned int irq, unsigned int type); +extern int irq_set_msi_desc(unsigned int irq, struct msi_desc *entry); extern struct irq_data *irq_get_irq_data(unsigned int irq); -static inline struct irq_chip *get_irq_chip(unsigned int irq) +static inline struct irq_chip *irq_get_chip(unsigned int irq) { struct irq_data *d = irq_get_irq_data(irq); return d ? d->chip : NULL; @@ -356,7 +355,7 @@ static inline struct irq_chip *irq_data_get_irq_chip(struct irq_data *d) return d->chip; } -static inline void *get_irq_chip_data(unsigned int irq) +static inline void *irq_get_chip_data(unsigned int irq) { struct irq_data *d = irq_get_irq_data(irq); return d ? d->chip_data : NULL; @@ -367,18 +366,18 @@ static inline void *irq_data_get_irq_chip_data(struct irq_data *d) return d->chip_data; } -static inline void *get_irq_data(unsigned int irq) +static inline void *irq_get_handler_data(unsigned int irq) { struct irq_data *d = irq_get_irq_data(irq); return d ? d->handler_data : NULL; } -static inline void *irq_data_get_irq_data(struct irq_data *d) +static inline void *irq_data_get_irq_handler_data(struct irq_data *d) { return d->handler_data; } -static inline struct msi_desc *get_irq_msi(unsigned int irq) +static inline struct msi_desc *irq_get_msi_desc(unsigned int irq) { struct irq_data *d = irq_get_irq_data(irq); return d ? d->msi_desc : NULL; @@ -389,6 +388,58 @@ static inline struct msi_desc *irq_data_get_msi(struct irq_data *d) return d->msi_desc; } +#ifndef CONFIG_GENERIC_HARDIRQS_NO_COMPAT +/* Please do not use: Use the replacement functions instead */ +static inline int set_irq_chip(unsigned int irq, struct irq_chip *chip) +{ + return irq_set_chip(irq, chip); +} +static inline int set_irq_data(unsigned int irq, void *data) +{ + return irq_set_handler_data(irq, data); +} +static inline int set_irq_chip_data(unsigned int irq, void *data) +{ + return irq_set_chip_data(irq, data); +} +static inline int set_irq_type(unsigned int irq, unsigned int type) +{ + return irq_set_irq_type(irq, type); +} +static inline int set_irq_msi(unsigned int irq, struct msi_desc *entry) +{ + return irq_set_msi_desc(irq, entry); +} +static inline struct irq_chip *get_irq_chip(unsigned int irq) +{ + return irq_get_chip(irq); +} +static inline void *get_irq_chip_data(unsigned int irq) +{ + return irq_get_chip_data(irq); +} +static inline void *get_irq_data(unsigned int irq) +{ + return irq_get_handler_data(irq); +} +static inline void *irq_data_get_irq_data(struct irq_data *d) +{ + return irq_data_get_irq_handler_data(d); +} +static inline struct msi_desc *get_irq_msi(unsigned int irq) +{ + return irq_get_msi_desc(irq); +} +static inline void set_irq_noprobe(unsigned int irq) +{ + irq_set_noprobe(irq); +} +static inline void set_irq_probe(unsigned int irq) +{ + irq_set_probe(irq); +} +#endif + int irq_alloc_descs(int irq, unsigned int from, unsigned int cnt, int node); void irq_free_descs(unsigned int irq, unsigned int cnt); int irq_reserve_irqs(unsigned int from, unsigned int cnt); diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h index bfef56dadddb..64794dec93b6 100644 --- a/include/linux/irqdesc.h +++ b/include/linux/irqdesc.h @@ -98,10 +98,46 @@ static inline struct irq_desc *move_irq_desc(struct irq_desc *desc, int node) #ifdef CONFIG_GENERIC_HARDIRQS -#define get_irq_desc_chip(desc) ((desc)->irq_data.chip) -#define get_irq_desc_chip_data(desc) ((desc)->irq_data.chip_data) -#define get_irq_desc_data(desc) ((desc)->irq_data.handler_data) -#define get_irq_desc_msi(desc) ((desc)->irq_data.msi_desc) +static inline struct irq_chip *irq_desc_get_chip(struct irq_desc *desc) +{ + return desc->irq_data.chip; +} + +static inline void *irq_desc_get_chip_data(struct irq_desc *desc) +{ + return desc->irq_data.chip_data; +} + +static inline void *irq_desc_get_handler_data(struct irq_desc *desc) +{ + return desc->irq_data.handler_data; +} + +static inline struct msi_desc *irq_desc_get_msi_desc(struct irq_desc *desc) +{ + return desc->irq_data.msi_desc; +} + +#ifndef CONFIG_GENERIC_HARDIRQS_NO_COMPAT +static inline struct irq_chip *get_irq_desc_chip(struct irq_desc *desc) +{ + return irq_desc_get_chip(desc); +} +static inline void *get_irq_desc_data(struct irq_desc *desc) +{ + return irq_desc_get_handler_data(desc); +} + +static inline void *get_irq_desc_chip_data(struct irq_desc *desc) +{ + return irq_desc_get_chip_data(desc); +} + +static inline struct msi_desc *get_irq_desc_msi(struct irq_desc *desc) +{ + return irq_desc_get_msi_desc(desc); +} +#endif /* * Architectures call this to let the generic IRQ layer -- cgit v1.2.3 From 3b8249e759c701c4a82f99d957be651a7657bf6f Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Mon, 7 Feb 2011 16:02:20 +0100 Subject: genirq: Do not copy affinity before set While rumaging through arch code I found that there are a few workarounds which deal with the fact that the initial affinity setting from request_irq() copies the mask into irq_data->affinity before the chip code is called. In the normal path we unconditionally copy the mask when the chip code returns 0. Copy after the code is called and add a return code IRQ_SET_MASK_OK_NOCOPY for the chip functions, which prevents the copy. That way we see the real mask when the chip function decided to truncate it further as some arches do. IRQ_SET_MASK_OK is 0, which is the current behaviour. Signed-off-by: Thomas Gleixner --- include/linux/irq.h | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index e9f847d56c4d..f5e900309d21 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -85,6 +85,17 @@ typedef void (*irq_flow_handler_t)(unsigned int irq, # define IRQ_NO_BALANCING_MASK IRQ_NO_BALANCING #endif +/* + * Return value for chip->irq_set_affinity() + * + * IRQ_SET_MASK_OK - OK, core updates irq_data.affinity + * IRQ_SET_MASK_NOCPY - OK, chip did update irq_data.affinity + */ +enum { + IRQ_SET_MASK_OK = 0, + IRQ_SET_MASK_OK_NOCOPY, +}; + struct msi_desc; /** -- cgit v1.2.3 From fe200ae48ef5c79bf7941fe8046ff9505c570ff6 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Mon, 7 Feb 2011 10:34:30 +0100 Subject: genirq: Mark polled irqs and defer the real handler With the chip.end() function gone we might run into a situation where a poll call runs and the real interrupt comes in, sees IRQ_INPROGRESS and disables the line. That might be a perfect working one, which will then be masked forever. So mark them polled while the poll runs. When the real handler sees IRQ_INPROGRESS it checks the poll flag and waits for the polling to complete. Add the necessary amount of sanity checks to it to avoid deadlocks. Signed-off-by: Thomas Gleixner --- include/linux/irq.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index f5e900309d21..e32b64ccdc89 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -71,6 +71,7 @@ typedef void (*irq_flow_handler_t)(unsigned int irq, #define IRQ_SUSPENDED 0x04000000 /* IRQ has gone through suspend sequence */ #define IRQ_ONESHOT 0x08000000 /* IRQ is not unmasked after hardirq */ #define IRQ_NESTED_THREAD 0x10000000 /* IRQ is nested into another, no own handler thread */ +#define IRQ_POLL_INPROGRESS 0x20000000 /* IRQ poll is in progress */ #define IRQF_MODIFY_MASK \ (IRQ_TYPE_SENSE_MASK | IRQ_NOPROBE | IRQ_NOREQUEST | \ -- cgit v1.2.3 From 1535dfacbf21c4da1b73fcf07c39913da5bd5581 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Mon, 7 Feb 2011 01:55:43 +0100 Subject: genirq: Move irq thread flags to core Soleley used in core code. Signed-off-by: Thomas Gleixner --- include/linux/interrupt.h | 14 -------------- 1 file changed, 14 deletions(-) (limited to 'include/linux') diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h index 7834726dd95b..de97b958f478 100644 --- a/include/linux/interrupt.h +++ b/include/linux/interrupt.h @@ -73,20 +73,6 @@ #define IRQF_TIMER (__IRQF_TIMER | IRQF_NO_SUSPEND) -/* - * Bits used by threaded handlers: - * IRQTF_RUNTHREAD - signals that the interrupt handler thread should run - * IRQTF_DIED - handler thread died - * IRQTF_WARNED - warning "IRQ_WAKE_THREAD w/o thread_fn" has been printed - * IRQTF_AFFINITY - irq thread is requested to adjust affinity - */ -enum { - IRQTF_RUNTHREAD, - IRQTF_DIED, - IRQTF_WARNED, - IRQTF_AFFINITY, -}; - /* * These values can be returned by request_any_context_irq() and * describe the context the interrupt will be run in. -- cgit v1.2.3 From c78b9b65faa291def628dbd8539649f58299f0f3 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Thu, 16 Dec 2010 17:21:47 +0100 Subject: genirq: Implement generic irq_show_interrupts() All archs implement show_interrupts() in more or less the same way. That's tons of duplicated code with different bugs with no value. Implement a generic version and deprecate show_interrupts() Unfortunately we need some ifdeffery for !GENERIC_HARDIRQ archs. Signed-off-by: Thomas Gleixner --- include/linux/interrupt.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h index de97b958f478..8da6643e39a6 100644 --- a/include/linux/interrupt.h +++ b/include/linux/interrupt.h @@ -671,6 +671,7 @@ static inline void init_irq_proc(void) struct seq_file; int show_interrupts(struct seq_file *p, void *v); +int arch_show_interrupts(struct seq_file *p, int prec); extern int early_irq_init(void); extern int arch_probe_nr_irqs(void); -- cgit v1.2.3 From dbec07bac614a61e3392c1e7c08cc6a49ad43f7a Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Mon, 7 Feb 2011 20:19:55 +0100 Subject: genirq: Add internal state field to irq_desc That field will contain internal state information which is not going to be exposed to anything outside the core code - except via accessor functions. I'm tired of everyone fiddling in irq_desc.status. core_internal_state__do_not_mess_with_it is clear enough, annoying to type and easy to grep for. Offenders will be tracked down and slapped with stinking trouts. Signed-off-by: Thomas Gleixner --- include/linux/irqdesc.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h index 64794dec93b6..782bf9851a9f 100644 --- a/include/linux/irqdesc.h +++ b/include/linux/irqdesc.h @@ -19,6 +19,7 @@ struct timer_rand_state; * @handle_irq: highlevel irq-events handler [if NULL, __do_IRQ()] * @action: the irq action chain * @status: status information + * @core_internal_state__do_not_mess_with_it: core internal status information * @depth: disable-depth, for nested irq_disable() calls * @wake_depth: enable depth, for multiple set_irq_wake() callers * @irq_count: stats field to detect stalled irqs @@ -63,7 +64,7 @@ struct irq_desc { irq_flow_handler_t handle_irq; struct irqaction *action; /* IRQ action list */ unsigned int status; /* IRQ status */ - + unsigned int core_internal_state__do_not_mess_with_it; unsigned int depth; /* nested irq disables */ unsigned int wake_depth; /* nested wake enables */ unsigned int irq_count; /* For detecting broken IRQs */ -- cgit v1.2.3 From bd062e7667ac173afef57fbfe9327f3b914a9d4c Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Mon, 7 Feb 2011 20:25:25 +0100 Subject: genirq: Move IRQ_AUTODETECT to internal state No users outside of core Signed-off-by: Thomas Gleixner --- include/linux/irq.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index e32b64ccdc89..d1f9c352cd1b 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -54,7 +54,6 @@ typedef void (*irq_flow_handler_t)(unsigned int irq, #define IRQ_DISABLED 0x00000200 /* IRQ disabled - do not enter! */ #define IRQ_PENDING 0x00000400 /* IRQ pending - replay on enable */ #define IRQ_REPLAY 0x00000800 /* IRQ has been replayed but not acked yet */ -#define IRQ_AUTODETECT 0x00001000 /* IRQ is being autodetected */ #define IRQ_WAITING 0x00002000 /* IRQ not yet seen - for autodetection */ #define IRQ_LEVEL 0x00004000 /* IRQ level triggered */ #define IRQ_MASKED 0x00008000 /* IRQ masked - shouldn't be seen again */ -- cgit v1.2.3 From 7acdd53e5b2c55b6f7e3427e85e2f91fa814a4f9 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Mon, 7 Feb 2011 20:40:54 +0100 Subject: genirq: Move IRQ_SPURIOUS_DISABLED to core state No users outside. Signed-off-by: Thomas Gleixner --- include/linux/irq.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index d1f9c352cd1b..a900741b43ea 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -64,7 +64,6 @@ typedef void (*irq_flow_handler_t)(unsigned int irq, #define IRQ_WAKEUP 0x00100000 /* IRQ triggers system wakeup */ #define IRQ_MOVE_PENDING 0x00200000 /* need to re-target IRQ destination */ #define IRQ_NO_BALANCING 0x00400000 /* IRQ is excluded from balancing */ -#define IRQ_SPURIOUS_DISABLED 0x00800000 /* IRQ was disabled by the spurious trap */ #define IRQ_MOVE_PCNTXT 0x01000000 /* IRQ migration from process context */ #define IRQ_AFFINITY_SET 0x02000000 /* IRQ affinity was set from userspace*/ #define IRQ_SUSPENDED 0x04000000 /* IRQ has gone through suspend sequence */ -- cgit v1.2.3 From 6f91a52d9bb28396177662f1da0f2e2cef9cf5d0 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Mon, 14 Feb 2011 13:33:16 +0100 Subject: genirq: Use modify_status for set_irq_nested_thread No need for a separate function in the core code. Signed-off-by: Thomas Gleixner --- include/linux/irq.h | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index a900741b43ea..67b77cfb2a34 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -74,7 +74,7 @@ typedef void (*irq_flow_handler_t)(unsigned int irq, #define IRQF_MODIFY_MASK \ (IRQ_TYPE_SENSE_MASK | IRQ_NOPROBE | IRQ_NOREQUEST | \ IRQ_NOAUTOEN | IRQ_MOVE_PCNTXT | IRQ_LEVEL | IRQ_NO_BALANCING | \ - IRQ_PER_CPU) + IRQ_PER_CPU | IRQ_NESTED_THREAD) #ifdef CONFIG_IRQ_PER_CPU # define CHECK_IRQ_PER_CPU(var) ((var) & IRQ_PER_CPU) @@ -307,8 +307,6 @@ set_irq_chained_handler(unsigned int irq, irq_flow_handler_t handle) __set_irq_handler(irq, handle, 1, NULL); } -extern void set_irq_nested_thread(unsigned int irq, int nest); - void irq_modify_status(unsigned int irq, unsigned long clr, unsigned long set); static inline void irq_set_status_flags(unsigned int irq, unsigned long set) @@ -331,6 +329,14 @@ static inline void irq_set_probe(unsigned int irq) irq_modify_status(irq, IRQ_NOPROBE, 0); } +static inline void irq_set_nested_thread(unsigned int irq, bool nest) +{ + if (nest) + irq_set_status_flags(irq, IRQ_NESTED_THREAD); + else + irq_clear_status_flags(irq, IRQ_NESTED_THREAD); +} + /* Handle dynamic irq creation and destruction */ extern unsigned int create_irq_nr(unsigned int irq_want, int node); extern int create_irq(void); @@ -448,6 +454,10 @@ static inline void set_irq_probe(unsigned int irq) { irq_set_probe(irq); } +static inline void set_irq_nested_thread(unsigned int irq, int nest) +{ + irq_set_nested_thread(irq, nest); +} #endif int irq_alloc_descs(int irq, unsigned int from, unsigned int cnt, int node); -- cgit v1.2.3 From 6954b75b488dd740950573f244ddd66fd28620aa Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Mon, 7 Feb 2011 20:55:35 +0100 Subject: genirq: Move IRQ_POLL_INPROGRESS to core No users outside of core. Signed-off-by: Thomas Gleixner --- include/linux/irq.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index 67b77cfb2a34..047a695511df 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -69,7 +69,6 @@ typedef void (*irq_flow_handler_t)(unsigned int irq, #define IRQ_SUSPENDED 0x04000000 /* IRQ has gone through suspend sequence */ #define IRQ_ONESHOT 0x08000000 /* IRQ is not unmasked after hardirq */ #define IRQ_NESTED_THREAD 0x10000000 /* IRQ is nested into another, no own handler thread */ -#define IRQ_POLL_INPROGRESS 0x20000000 /* IRQ poll is in progress */ #define IRQF_MODIFY_MASK \ (IRQ_TYPE_SENSE_MASK | IRQ_NOPROBE | IRQ_NOREQUEST | \ -- cgit v1.2.3 From 009b4c3b8ad584b3462734127a5bec680d5d6af4 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Mon, 7 Feb 2011 21:48:49 +0100 Subject: genirq: Add IRQ_INPROGRESS to core We need to maintain the flag for now in both fields status and istate. Add a CONFIG_GENERIC_HARDIRQS_NO_COMPAT switch to allow testing w/o the status one. Wrap the access to status IRQ_INPROGRESS in a inline which can be turned of with CONFIG_GENERIC_HARDIRQS_NO_COMPAT along with the define. There is no reason that anything outside of core looks at this. That needs some modifications, but we'll get there. Signed-off-by: Thomas Gleixner --- include/linux/irq.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index 047a695511df..274590fc55a3 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -50,7 +50,11 @@ typedef void (*irq_flow_handler_t)(unsigned int irq, #define IRQ_TYPE_PROBE 0x00000010 /* Probing in progress */ /* Internal flags */ -#define IRQ_INPROGRESS 0x00000100 /* IRQ handler active - do not enter! */ + +#ifndef CONFIG_GENERIC_HARDIRQS_NO_COMPAT +#define IRQ_INPROGRESS 0x00000100 /* DEPRECATED */ +#endif + #define IRQ_DISABLED 0x00000200 /* IRQ disabled - do not enter! */ #define IRQ_PENDING 0x00000400 /* IRQ pending - replay on enable */ #define IRQ_REPLAY 0x00000800 /* IRQ has been replayed but not acked yet */ -- cgit v1.2.3 From 3d67baec7f1b01fc289ac1a2f1a7e6d5e43391c6 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Mon, 7 Feb 2011 21:02:10 +0100 Subject: genirq: Move IRQ_ONESHOT to core No users outside of core. Signed-off-by: Thomas Gleixner --- include/linux/irq.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index 274590fc55a3..1a4c723e74e1 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -71,7 +71,6 @@ typedef void (*irq_flow_handler_t)(unsigned int irq, #define IRQ_MOVE_PCNTXT 0x01000000 /* IRQ migration from process context */ #define IRQ_AFFINITY_SET 0x02000000 /* IRQ affinity was set from userspace*/ #define IRQ_SUSPENDED 0x04000000 /* IRQ has gone through suspend sequence */ -#define IRQ_ONESHOT 0x08000000 /* IRQ is not unmasked after hardirq */ #define IRQ_NESTED_THREAD 0x10000000 /* IRQ is nested into another, no own handler thread */ #define IRQF_MODIFY_MASK \ -- cgit v1.2.3 From 163ef3091195f514a06f064b12914597d2644c55 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Tue, 8 Feb 2011 11:39:15 +0100 Subject: genirq: Move IRQ_REPLAY and IRQ_WAITING to core No users outside of core. Signed-off-by: Thomas Gleixner --- include/linux/irq.h | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index 1a4c723e74e1..c38dbd506656 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -53,12 +53,13 @@ typedef void (*irq_flow_handler_t)(unsigned int irq, #ifndef CONFIG_GENERIC_HARDIRQS_NO_COMPAT #define IRQ_INPROGRESS 0x00000100 /* DEPRECATED */ +#define IRQ_REPLAY 0x00000200 /* DEPRECATED */ +#define IRQ_WAITING 0x00000400 /* DEPRECATED */ #endif -#define IRQ_DISABLED 0x00000200 /* IRQ disabled - do not enter! */ -#define IRQ_PENDING 0x00000400 /* IRQ pending - replay on enable */ -#define IRQ_REPLAY 0x00000800 /* IRQ has been replayed but not acked yet */ -#define IRQ_WAITING 0x00002000 /* IRQ not yet seen - for autodetection */ +#define IRQ_DISABLED 0x00000800 /* IRQ disabled - do not enter! */ +#define IRQ_PENDING 0x00001000 /* IRQ pending - replay on enable */ + #define IRQ_LEVEL 0x00004000 /* IRQ level triggered */ #define IRQ_MASKED 0x00008000 /* IRQ masked - shouldn't be seen again */ #define IRQ_PER_CPU 0x00010000 /* IRQ is per CPU */ -- cgit v1.2.3 From c1594b77e46124bb462f961e536120e471c67446 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Mon, 7 Feb 2011 22:11:30 +0100 Subject: genirq: Move IRQ_DISABLED to core Keep status in sync until all abusers are fixed. Signed-off-by: Thomas Gleixner --- include/linux/irq.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index c38dbd506656..32efca71ce88 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -55,9 +55,9 @@ typedef void (*irq_flow_handler_t)(unsigned int irq, #define IRQ_INPROGRESS 0x00000100 /* DEPRECATED */ #define IRQ_REPLAY 0x00000200 /* DEPRECATED */ #define IRQ_WAITING 0x00000400 /* DEPRECATED */ +#define IRQ_DISABLED 0x00000800 /* DEPRECATED */ #endif -#define IRQ_DISABLED 0x00000800 /* IRQ disabled - do not enter! */ #define IRQ_PENDING 0x00001000 /* IRQ pending - replay on enable */ #define IRQ_LEVEL 0x00004000 /* IRQ level triggered */ @@ -231,7 +231,7 @@ struct irq_chip { # define ARCH_IRQ_INIT_FLAGS 0 #endif -#define IRQ_DEFAULT_INIT_FLAGS (IRQ_DISABLED | ARCH_IRQ_INIT_FLAGS) +#define IRQ_DEFAULT_INIT_FLAGS ARCH_IRQ_INIT_FLAGS struct irqaction; extern int setup_irq(unsigned int irq, struct irqaction *new); -- cgit v1.2.3 From 2a0d6fb335d4428285dab2d254911748e6040807 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Tue, 8 Feb 2011 12:17:57 +0100 Subject: genirq: Move IRQ_PENDING flag to core Keep status in sync until all users are fixed. Signed-off-by: Thomas Gleixner --- include/linux/irq.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index 32efca71ce88..7ca55c9deba4 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -56,9 +56,9 @@ typedef void (*irq_flow_handler_t)(unsigned int irq, #define IRQ_REPLAY 0x00000200 /* DEPRECATED */ #define IRQ_WAITING 0x00000400 /* DEPRECATED */ #define IRQ_DISABLED 0x00000800 /* DEPRECATED */ +#define IRQ_PENDING 0x00001000 /* DEPRECATED */ #endif -#define IRQ_PENDING 0x00001000 /* IRQ pending - replay on enable */ #define IRQ_LEVEL 0x00004000 /* IRQ level triggered */ #define IRQ_MASKED 0x00008000 /* IRQ masked - shouldn't be seen again */ -- cgit v1.2.3 From 6e40262ea43c4b0e3f435b3a083e4461ef921c17 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Tue, 8 Feb 2011 12:36:06 +0100 Subject: genirq: Move IRQ_MASKED to core Keep status in sync until all users are fixed. Signed-off-by: Thomas Gleixner --- include/linux/irq.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index 7ca55c9deba4..9800bac4c398 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -57,11 +57,11 @@ typedef void (*irq_flow_handler_t)(unsigned int irq, #define IRQ_WAITING 0x00000400 /* DEPRECATED */ #define IRQ_DISABLED 0x00000800 /* DEPRECATED */ #define IRQ_PENDING 0x00001000 /* DEPRECATED */ +#define IRQ_MASKED 0x00002000 /* DEPRECATED */ #endif #define IRQ_LEVEL 0x00004000 /* IRQ level triggered */ -#define IRQ_MASKED 0x00008000 /* IRQ masked - shouldn't be seen again */ #define IRQ_PER_CPU 0x00010000 /* IRQ is per CPU */ #define IRQ_NOPROBE 0x00020000 /* IRQ is not valid for probing */ #define IRQ_NOREQUEST 0x00040000 /* IRQ cannot be requested */ -- cgit v1.2.3 From c531e8361f1968d664e6e97fbd3bfa4cf0e62e42 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Tue, 8 Feb 2011 12:44:58 +0100 Subject: genirq: Move IRQ_SUSPENDED to core No users outside of core. Signed-off-by: Thomas Gleixner --- include/linux/irq.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index 9800bac4c398..3ce45c257edb 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -60,7 +60,6 @@ typedef void (*irq_flow_handler_t)(unsigned int irq, #define IRQ_MASKED 0x00002000 /* DEPRECATED */ #endif - #define IRQ_LEVEL 0x00004000 /* IRQ level triggered */ #define IRQ_PER_CPU 0x00010000 /* IRQ is per CPU */ #define IRQ_NOPROBE 0x00020000 /* IRQ is not valid for probing */ @@ -71,7 +70,6 @@ typedef void (*irq_flow_handler_t)(unsigned int irq, #define IRQ_NO_BALANCING 0x00400000 /* IRQ is excluded from balancing */ #define IRQ_MOVE_PCNTXT 0x01000000 /* IRQ migration from process context */ #define IRQ_AFFINITY_SET 0x02000000 /* IRQ affinity was set from userspace*/ -#define IRQ_SUSPENDED 0x04000000 /* IRQ has gone through suspend sequence */ #define IRQ_NESTED_THREAD 0x10000000 /* IRQ is nested into another, no own handler thread */ #define IRQF_MODIFY_MASK \ -- cgit v1.2.3 From 91c499178139d6597e68db19638e4135510a34b8 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Thu, 3 Feb 2011 20:48:29 +0100 Subject: genirq: Add state field to irq_data Some chip implementations need to access certain status flags. With sparse irqs that requires a lookup of the irq descriptor. Add a state field which contains such flags. Name it in a way which will make coders happy to access it with the proper accessor functions. And it's easy to grep for. Signed-off-by: Thomas Gleixner --- include/linux/irq.h | 3 +++ include/linux/irqdesc.h | 1 + 2 files changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index 3ce45c257edb..62bb08e4af13 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -102,6 +102,8 @@ struct msi_desc; * struct irq_data - per irq and irq chip data passed down to chip functions * @irq: interrupt number * @node: node index useful for balancing + * @state_use_accessor: status information for irq chip functions. + * Use accessor functions to deal with it * @chip: low level interrupt hardware access * @handler_data: per-IRQ data for the irq_chip methods * @chip_data: platform-specific per-chip private data for the chip @@ -116,6 +118,7 @@ struct msi_desc; struct irq_data { unsigned int irq; unsigned int node; + unsigned int state_use_accessors; struct irq_chip *chip; void *handler_data; void *chip_data; diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h index 782bf9851a9f..581d9665fd38 100644 --- a/include/linux/irqdesc.h +++ b/include/linux/irqdesc.h @@ -48,6 +48,7 @@ struct irq_desc { struct { unsigned int irq; unsigned int node; + unsigned int pad_do_not_even_think_about_it; struct irq_chip *chip; void *handler_data; void *chip_data; -- cgit v1.2.3 From f230b6d5c48f8d12f4dfa1f8b5ab0b0320076d21 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Sat, 5 Feb 2011 15:20:04 +0100 Subject: genirq: Add IRQ_MOVE_PENDING to irq_data.state chip implementations need to know about it. Keep status in sync until all users are fixed. Accessor function: irqd_is_setaffinity_pending(irqdata) Coders who access them directly will be tracked down and slapped with stinking trouts. Signed-off-by: Thomas Gleixner --- include/linux/irq.h | 20 ++++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index 62bb08e4af13..2899905bfac7 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -58,15 +58,16 @@ typedef void (*irq_flow_handler_t)(unsigned int irq, #define IRQ_DISABLED 0x00000800 /* DEPRECATED */ #define IRQ_PENDING 0x00001000 /* DEPRECATED */ #define IRQ_MASKED 0x00002000 /* DEPRECATED */ +/* DEPRECATED use irq_setaffinity_pending() instead*/ +#define IRQ_MOVE_PENDING 0x00004000 #endif -#define IRQ_LEVEL 0x00004000 /* IRQ level triggered */ +#define IRQ_LEVEL 0x00008000 /* IRQ level triggered */ #define IRQ_PER_CPU 0x00010000 /* IRQ is per CPU */ #define IRQ_NOPROBE 0x00020000 /* IRQ is not valid for probing */ #define IRQ_NOREQUEST 0x00040000 /* IRQ cannot be requested */ #define IRQ_NOAUTOEN 0x00080000 /* IRQ will not be enabled on request irq */ #define IRQ_WAKEUP 0x00100000 /* IRQ triggers system wakeup */ -#define IRQ_MOVE_PENDING 0x00200000 /* need to re-target IRQ destination */ #define IRQ_NO_BALANCING 0x00400000 /* IRQ is excluded from balancing */ #define IRQ_MOVE_PCNTXT 0x01000000 /* IRQ migration from process context */ #define IRQ_AFFINITY_SET 0x02000000 /* IRQ affinity was set from userspace*/ @@ -128,6 +129,21 @@ struct irq_data { #endif }; +/* + * Bit masks for irq_data.state + * + * IRQD_SETAFFINITY_PENDING - Affinity setting is pending + */ +enum { + /* Bit 0 - 7 reserved for TYPE will use later */ + IRQD_SETAFFINITY_PENDING = (1 << 8), +}; + +static inline bool irqd_is_setaffinity_pending(struct irq_data *d) +{ + return d->state_use_accessors & IRQD_SETAFFINITY_PENDING; +} + /** * struct irq_chip - hardware interrupt chip descriptor * -- cgit v1.2.3 From 6a58fb3bad099076f36f0f30f44507bc3275cdb6 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Tue, 8 Feb 2011 15:40:05 +0100 Subject: genirq: Remove CONFIG_IRQ_PER_CPU The saving of this switch is minimal versus the ifdef mess it creates. Simple enable PER_CPU unconditionally and remove the config switch. Signed-off-by: Thomas Gleixner --- include/linux/irq.h | 5 ----- 1 file changed, 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index 2899905bfac7..ab708f27a33b 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -78,13 +78,8 @@ typedef void (*irq_flow_handler_t)(unsigned int irq, IRQ_NOAUTOEN | IRQ_MOVE_PCNTXT | IRQ_LEVEL | IRQ_NO_BALANCING | \ IRQ_PER_CPU | IRQ_NESTED_THREAD) -#ifdef CONFIG_IRQ_PER_CPU # define CHECK_IRQ_PER_CPU(var) ((var) & IRQ_PER_CPU) # define IRQ_NO_BALANCING_MASK (IRQ_PER_CPU | IRQ_NO_BALANCING) -#else -# define CHECK_IRQ_PER_CPU(var) 0 -# define IRQ_NO_BALANCING_MASK IRQ_NO_BALANCING -#endif /* * Return value for chip->irq_set_affinity() -- cgit v1.2.3 From 8f53f92404bead2ab2154d45c8f508880bb5d95d Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Tue, 8 Feb 2011 16:50:00 +0100 Subject: genirq: Make CHECK_IRQ_PER_CPU an inline and deprecate it Its' too ugly and needs to go. The only users are core code and parisc. Core code does not need it and parisc gets a new check once IRQ_PER_CPU is reflected in irq_data.state. Signed-off-by: Thomas Gleixner --- include/linux/irq.h | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index ab708f27a33b..3f607ad94220 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -78,8 +78,12 @@ typedef void (*irq_flow_handler_t)(unsigned int irq, IRQ_NOAUTOEN | IRQ_MOVE_PCNTXT | IRQ_LEVEL | IRQ_NO_BALANCING | \ IRQ_PER_CPU | IRQ_NESTED_THREAD) -# define CHECK_IRQ_PER_CPU(var) ((var) & IRQ_PER_CPU) -# define IRQ_NO_BALANCING_MASK (IRQ_PER_CPU | IRQ_NO_BALANCING) +#define IRQ_NO_BALANCING_MASK (IRQ_PER_CPU | IRQ_NO_BALANCING) + +static inline __deprecated bool CHECK_IRQ_PER_CPU(unsigned int status) +{ + return status & IRQ_PER_CPU; +} /* * Return value for chip->irq_set_affinity() -- cgit v1.2.3 From a005677b3dd05decdd8880cf3044ae709856f58f Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Tue, 8 Feb 2011 17:11:03 +0100 Subject: genirq: Mirror IRQ_PER_CPU and IRQ_NO_BALANCING in irq_data.state That's the right data structure to look at for arch code. Accessor functions are provided. irqd_is_per_cpu(irqdata); irqd_can_balance(irqdata); Coders who access them directly will be tracked down and slapped with stinking trouts. Signed-off-by: Thomas Gleixner --- include/linux/irq.h | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index 3f607ad94220..d5312e6fe1aa 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -132,10 +132,14 @@ struct irq_data { * Bit masks for irq_data.state * * IRQD_SETAFFINITY_PENDING - Affinity setting is pending + * IRQD_NO_BALANCING - Balancing disabled for this IRQ + * IRQD_PER_CPU - Interrupt is per cpu */ enum { /* Bit 0 - 7 reserved for TYPE will use later */ - IRQD_SETAFFINITY_PENDING = (1 << 8), + IRQD_SETAFFINITY_PENDING = (1 << 8), + IRQD_NO_BALANCING = (1 << 10), + IRQD_PER_CPU = (1 << 11), }; static inline bool irqd_is_setaffinity_pending(struct irq_data *d) @@ -143,6 +147,16 @@ static inline bool irqd_is_setaffinity_pending(struct irq_data *d) return d->state_use_accessors & IRQD_SETAFFINITY_PENDING; } +static inline bool irqd_is_per_cpu(struct irq_data *d) +{ + return d->state_use_accessors & IRQD_PER_CPU; +} + +static inline bool irqd_can_balance(struct irq_data *d) +{ + return !(d->state_use_accessors & (IRQD_PER_CPU | IRQD_NO_BALANCING)); +} + /** * struct irq_chip - hardware interrupt chip descriptor * -- cgit v1.2.3 From 2bdd10558c8d93009cb6c32ce9e30800fbb08add Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Tue, 8 Feb 2011 17:22:00 +0100 Subject: genirq: Move IRQ_AFFINITY_SET to core Keep status in sync until last abuser is gone. Signed-off-by: Thomas Gleixner --- include/linux/irq.h | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index d5312e6fe1aa..8da1782ecfca 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -60,6 +60,7 @@ typedef void (*irq_flow_handler_t)(unsigned int irq, #define IRQ_MASKED 0x00002000 /* DEPRECATED */ /* DEPRECATED use irq_setaffinity_pending() instead*/ #define IRQ_MOVE_PENDING 0x00004000 +#define IRQ_AFFINITY_SET 0x02000000 /* DEPRECATED */ #endif #define IRQ_LEVEL 0x00008000 /* IRQ level triggered */ @@ -70,7 +71,6 @@ typedef void (*irq_flow_handler_t)(unsigned int irq, #define IRQ_WAKEUP 0x00100000 /* IRQ triggers system wakeup */ #define IRQ_NO_BALANCING 0x00400000 /* IRQ is excluded from balancing */ #define IRQ_MOVE_PCNTXT 0x01000000 /* IRQ migration from process context */ -#define IRQ_AFFINITY_SET 0x02000000 /* IRQ affinity was set from userspace*/ #define IRQ_NESTED_THREAD 0x10000000 /* IRQ is nested into another, no own handler thread */ #define IRQF_MODIFY_MASK \ @@ -134,12 +134,14 @@ struct irq_data { * IRQD_SETAFFINITY_PENDING - Affinity setting is pending * IRQD_NO_BALANCING - Balancing disabled for this IRQ * IRQD_PER_CPU - Interrupt is per cpu + * IRQD_AFFINITY_SET - Interrupt affinity was set */ enum { /* Bit 0 - 7 reserved for TYPE will use later */ IRQD_SETAFFINITY_PENDING = (1 << 8), IRQD_NO_BALANCING = (1 << 10), IRQD_PER_CPU = (1 << 11), + IRQD_AFFINITY_SET = (1 << 12), }; static inline bool irqd_is_setaffinity_pending(struct irq_data *d) @@ -157,6 +159,11 @@ static inline bool irqd_can_balance(struct irq_data *d) return !(d->state_use_accessors & (IRQD_PER_CPU | IRQD_NO_BALANCING)); } +static inline bool irqd_affinity_was_set(struct irq_data *d) +{ + return d->state_use_accessors & IRQD_AFFINITY_SET; +} + /** * struct irq_chip - hardware interrupt chip descriptor * -- cgit v1.2.3 From 876dbd4cc1b35c1a4cb96a2be1d43ea0eabce3b4 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Tue, 8 Feb 2011 17:28:12 +0100 Subject: genirq: Mirror irq trigger type bits in irq_data.state That's the data structure chip functions get provided. Also allow them to signal the core code that they updated the flags in irq_data.state by returning IRQ_SET_MASK_OK_NOCOPY. The default is unchanged. The type bits should be accessed via: val = irqd_get_trigger_type(irqdata); and irqd_set_trigger_type(irqdata, val); Coders who access them directly will be tracked down and slapped with stinking trouts. Signed-off-by: Thomas Gleixner --- include/linux/irq.h | 26 +++++++++++++++++++++++++- 1 file changed, 25 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index 8da1782ecfca..be73c0a3c19d 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -46,7 +46,9 @@ typedef void (*irq_flow_handler_t)(unsigned int irq, #define IRQ_TYPE_EDGE_BOTH (IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_EDGE_RISING) #define IRQ_TYPE_LEVEL_HIGH 0x00000004 /* Level high type */ #define IRQ_TYPE_LEVEL_LOW 0x00000008 /* Level low type */ +#define IRQ_TYPE_LEVEL_MASK (IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_LEVEL_HIGH) #define IRQ_TYPE_SENSE_MASK 0x0000000f /* Mask of the above */ + #define IRQ_TYPE_PROBE 0x00000010 /* Probing in progress */ /* Internal flags */ @@ -131,17 +133,20 @@ struct irq_data { /* * Bit masks for irq_data.state * + * IRQD_TRIGGER_MASK - Mask for the trigger type bits * IRQD_SETAFFINITY_PENDING - Affinity setting is pending * IRQD_NO_BALANCING - Balancing disabled for this IRQ * IRQD_PER_CPU - Interrupt is per cpu * IRQD_AFFINITY_SET - Interrupt affinity was set + * IRQD_LEVEL - Interrupt is level triggered */ enum { - /* Bit 0 - 7 reserved for TYPE will use later */ + IRQD_TRIGGER_MASK = 0xf, IRQD_SETAFFINITY_PENDING = (1 << 8), IRQD_NO_BALANCING = (1 << 10), IRQD_PER_CPU = (1 << 11), IRQD_AFFINITY_SET = (1 << 12), + IRQD_LEVEL = (1 << 13), }; static inline bool irqd_is_setaffinity_pending(struct irq_data *d) @@ -164,6 +169,25 @@ static inline bool irqd_affinity_was_set(struct irq_data *d) return d->state_use_accessors & IRQD_AFFINITY_SET; } +static inline u32 irqd_get_trigger_type(struct irq_data *d) +{ + return d->state_use_accessors & IRQD_TRIGGER_MASK; +} + +/* + * Must only be called inside irq_chip.irq_set_type() functions. + */ +static inline void irqd_set_trigger_type(struct irq_data *d, u32 type) +{ + d->state_use_accessors &= ~IRQD_TRIGGER_MASK; + d->state_use_accessors |= type & IRQD_TRIGGER_MASK; +} + +static inline bool irqd_is_level_type(struct irq_data *d) +{ + return d->state_use_accessors & IRQD_LEVEL; +} + /** * struct irq_chip - hardware interrupt chip descriptor * -- cgit v1.2.3 From 5d4d8fc9ac3e9a90bbdf90bae6864cb2c01f2208 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Tue, 8 Feb 2011 17:27:18 +0100 Subject: genirq: Cleanup irq.h Put the constants into an enum and document them. Signed-off-by: Thomas Gleixner --- include/linux/irq.h | 95 ++++++++++++++++++++++++++++++++++------------------- 1 file changed, 62 insertions(+), 33 deletions(-) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index be73c0a3c19d..2e3d1e5f0408 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -36,44 +36,73 @@ typedef void (*irq_flow_handler_t)(unsigned int irq, /* * IRQ line status. * - * Bits 0-7 are reserved for the IRQF_* bits in linux/interrupt.h + * Bits 0-7 are the same as the IRQF_* bits in linux/interrupt.h + * + * IRQ_TYPE_NONE - default, unspecified type + * IRQ_TYPE_EDGE_RISING - rising edge triggered + * IRQ_TYPE_EDGE_FALLING - falling edge triggered + * IRQ_TYPE_EDGE_BOTH - rising and falling edge triggered + * IRQ_TYPE_LEVEL_HIGH - high level triggered + * IRQ_TYPE_LEVEL_LOW - low level triggered + * IRQ_TYPE_LEVEL_MASK - Mask to filter out the level bits + * IRQ_TYPE_SENSE_MASK - Mask for all the above bits + * IRQ_TYPE_PROBE - Special flag for probing in progress + * + * Bits which can be modified via irq_set/clear/modify_status_flags() + * IRQ_LEVEL - Interrupt is level type. Will be also + * updated in the code when the above trigger + * bits are modified via set_irq_type() + * IRQ_PER_CPU - Mark an interrupt PER_CPU. Will protect + * it from affinity setting + * IRQ_NOPROBE - Interrupt cannot be probed by autoprobing + * IRQ_NOREQUEST - Interrupt cannot be requested via + * request_irq() + * IRQ_NOAUTOEN - Interrupt is not automatically enabled in + * request/setup_irq() + * IRQ_NO_BALANCING - Interrupt cannot be balanced (affinity set) + * IRQ_MOVE_PCNTXT - Interrupt can be migrated from process context + * IRQ_NESTED_TRHEAD - Interrupt nests into another thread + * + * Deprecated bits. They are kept updated as long as + * CONFIG_GENERIC_HARDIRQS_NO_COMPAT is not set. Will go away soon. These bits + * are internal state of the core code and if you really need to acces + * them then talk to the genirq maintainer instead of hacking + * something weird. * - * IRQ types */ -#define IRQ_TYPE_NONE 0x00000000 /* Default, unspecified type */ -#define IRQ_TYPE_EDGE_RISING 0x00000001 /* Edge rising type */ -#define IRQ_TYPE_EDGE_FALLING 0x00000002 /* Edge falling type */ -#define IRQ_TYPE_EDGE_BOTH (IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_EDGE_RISING) -#define IRQ_TYPE_LEVEL_HIGH 0x00000004 /* Level high type */ -#define IRQ_TYPE_LEVEL_LOW 0x00000008 /* Level low type */ -#define IRQ_TYPE_LEVEL_MASK (IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_LEVEL_HIGH) -#define IRQ_TYPE_SENSE_MASK 0x0000000f /* Mask of the above */ - -#define IRQ_TYPE_PROBE 0x00000010 /* Probing in progress */ - -/* Internal flags */ +enum { + IRQ_TYPE_NONE = 0x00000000, + IRQ_TYPE_EDGE_RISING = 0x00000001, + IRQ_TYPE_EDGE_FALLING = 0x00000002, + IRQ_TYPE_EDGE_BOTH = (IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_EDGE_RISING), + IRQ_TYPE_LEVEL_HIGH = 0x00000004, + IRQ_TYPE_LEVEL_LOW = 0x00000008, + IRQ_TYPE_LEVEL_MASK = (IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_LEVEL_HIGH), + IRQ_TYPE_SENSE_MASK = 0x0000000f, + + IRQ_TYPE_PROBE = 0x00000010, + + IRQ_LEVEL = (1 << 8), + IRQ_PER_CPU = (1 << 9), + IRQ_NOPROBE = (1 << 10), + IRQ_NOREQUEST = (1 << 11), + IRQ_NOAUTOEN = (1 << 12), + IRQ_NO_BALANCING = (1 << 13), + IRQ_MOVE_PCNTXT = (1 << 14), + IRQ_NESTED_THREAD = (1 << 15), #ifndef CONFIG_GENERIC_HARDIRQS_NO_COMPAT -#define IRQ_INPROGRESS 0x00000100 /* DEPRECATED */ -#define IRQ_REPLAY 0x00000200 /* DEPRECATED */ -#define IRQ_WAITING 0x00000400 /* DEPRECATED */ -#define IRQ_DISABLED 0x00000800 /* DEPRECATED */ -#define IRQ_PENDING 0x00001000 /* DEPRECATED */ -#define IRQ_MASKED 0x00002000 /* DEPRECATED */ -/* DEPRECATED use irq_setaffinity_pending() instead*/ -#define IRQ_MOVE_PENDING 0x00004000 -#define IRQ_AFFINITY_SET 0x02000000 /* DEPRECATED */ + IRQ_INPROGRESS = (1 << 16), + IRQ_REPLAY = (1 << 17), + IRQ_WAITING = (1 << 18), + IRQ_DISABLED = (1 << 19), + IRQ_PENDING = (1 << 20), + IRQ_MASKED = (1 << 21), + IRQ_MOVE_PENDING = (1 << 22), + IRQ_AFFINITY_SET = (1 << 23), + IRQ_WAKEUP = (1 << 24), #endif - -#define IRQ_LEVEL 0x00008000 /* IRQ level triggered */ -#define IRQ_PER_CPU 0x00010000 /* IRQ is per CPU */ -#define IRQ_NOPROBE 0x00020000 /* IRQ is not valid for probing */ -#define IRQ_NOREQUEST 0x00040000 /* IRQ cannot be requested */ -#define IRQ_NOAUTOEN 0x00080000 /* IRQ will not be enabled on request irq */ -#define IRQ_WAKEUP 0x00100000 /* IRQ triggers system wakeup */ -#define IRQ_NO_BALANCING 0x00400000 /* IRQ is excluded from balancing */ -#define IRQ_MOVE_PCNTXT 0x01000000 /* IRQ migration from process context */ -#define IRQ_NESTED_THREAD 0x10000000 /* IRQ is nested into another, no own handler thread */ +}; #define IRQF_MODIFY_MASK \ (IRQ_TYPE_SENSE_MASK | IRQ_NOPROBE | IRQ_NOREQUEST | \ -- cgit v1.2.3 From 2bff17ad2107c66fc8ca96501a7128dd7fa7a390 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Thu, 10 Feb 2011 13:08:38 +0100 Subject: genirq: Add flags to irq_chip Looking through irq_chip implementations I noticed that some of them have special requirements, like setting the type masked and therefor fiddle in irq_desc->status. Add a flag field, so the core code can handle it. Signed-off-by: Thomas Gleixner --- include/linux/irq.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index 2e3d1e5f0408..aefb30bbcf0e 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -253,6 +253,7 @@ static inline bool irqd_is_level_type(struct irq_data *d) * @irq_set_wake: enable/disable power-management wake-on of an IRQ * @irq_bus_lock: function to lock access to slow bus (i2c) chips * @irq_bus_sync_unlock:function to sync and unlock slow bus (i2c) chips + * @flags: chip specific flags * * @release: release function solely used by UML */ @@ -299,6 +300,8 @@ struct irq_chip { void (*irq_bus_lock)(struct irq_data *data); void (*irq_bus_sync_unlock)(struct irq_data *data); + unsigned long flags; + /* Currently used only by UML, might disappear one day.*/ #ifdef CONFIG_IRQ_RELEASE_METHOD void (*release)(unsigned int irq, void *dev_id); -- cgit v1.2.3 From d4d5e08960844a062da8387ee5f16ca7a33200d0 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Thu, 10 Feb 2011 13:16:14 +0100 Subject: genirq: Add IRQCHIP_SET_TYPE_MASKED flag irq_chips, which require to mask the chip before changing the trigger type should set this flag. So the core takes care of it and the requirement for looking into desc->status in the chip goes away. Signed-off-by: Thomas Gleixner Cc: Linus Walleij Cc: Lars-Peter Clausen --- include/linux/irq.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index aefb30bbcf0e..ef6b66dc9d03 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -308,6 +308,15 @@ struct irq_chip { #endif }; +/* + * irq_chip specific flags + * + * IRQCHIP_SET_TYPE_MASKED: Mask before calling chip.irq_set_type() + */ +enum { + IRQCHIP_SET_TYPE_MASKED = (1 << 0), +}; + /* This include will go away once we isolated irq_desc usage to core code */ #include -- cgit v1.2.3 From 7f94226f03299f1ca32f118f02f2a0295e0e5e93 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Thu, 10 Feb 2011 19:46:26 +0100 Subject: genirq: Move wakeup state to irq_data Some irq_chips need to know the state of wakeup mode for setting the trigger type etc. Reflect it in irq_data state. Signed-off-by: Thomas Gleixner --- include/linux/irq.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index ef6b66dc9d03..94c8f5bb548f 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -168,6 +168,8 @@ struct irq_data { * IRQD_PER_CPU - Interrupt is per cpu * IRQD_AFFINITY_SET - Interrupt affinity was set * IRQD_LEVEL - Interrupt is level triggered + * IRQD_WAKEUP_STATE - Interrupt is configured for wakeup + * from suspend */ enum { IRQD_TRIGGER_MASK = 0xf, @@ -176,6 +178,7 @@ enum { IRQD_PER_CPU = (1 << 11), IRQD_AFFINITY_SET = (1 << 12), IRQD_LEVEL = (1 << 13), + IRQD_WAKEUP_STATE = (1 << 14), }; static inline bool irqd_is_setaffinity_pending(struct irq_data *d) @@ -217,6 +220,11 @@ static inline bool irqd_is_level_type(struct irq_data *d) return d->state_use_accessors & IRQD_LEVEL; } +static inline bool irqd_is_wakeup_set(struct irq_data *d) +{ + return d->state_use_accessors & IRQD_WAKEUP_STATE; +} + /** * struct irq_chip - hardware interrupt chip descriptor * -- cgit v1.2.3 From e1ef824146131709d7466e37f889f2dab24ca98e Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Thu, 10 Feb 2011 22:25:31 +0100 Subject: genirq: Reflect IRQ_MOVE_PCNTXT in irq_data state Required by x86. Signed-off-by: Thomas Gleixner --- include/linux/irq.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index 94c8f5bb548f..c101ad4b821f 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -170,6 +170,8 @@ struct irq_data { * IRQD_LEVEL - Interrupt is level triggered * IRQD_WAKEUP_STATE - Interrupt is configured for wakeup * from suspend + * IRDQ_MOVE_PCNTXT - Interrupt can be moved in process + * context */ enum { IRQD_TRIGGER_MASK = 0xf, @@ -179,6 +181,7 @@ enum { IRQD_AFFINITY_SET = (1 << 12), IRQD_LEVEL = (1 << 13), IRQD_WAKEUP_STATE = (1 << 14), + IRQD_MOVE_PCNTXT = (1 << 15), }; static inline bool irqd_is_setaffinity_pending(struct irq_data *d) @@ -225,6 +228,11 @@ static inline bool irqd_is_wakeup_set(struct irq_data *d) return d->state_use_accessors & IRQD_WAKEUP_STATE; } +static inline bool irqd_can_move_in_process_context(struct irq_data *d) +{ + return d->state_use_accessors & IRQD_MOVE_PCNTXT; +} + /** * struct irq_chip - hardware interrupt chip descriptor * -- cgit v1.2.3 From a6967caf00ebbb2d4acdebcb72a25f2e9ba43fd2 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Thu, 10 Feb 2011 22:01:25 +0100 Subject: genirq: Remove desc->status when GENERIC_HARDIRQS_NO_COMPAT=y If everything uses the right accessors, then enabling GENERIC_HARDIRQS_NO_COMPAT should just work. If not it will tell you. Don't be lazy and use the trick which I use in the core code! git grep status_use_accessors will unearth it in a split second. Offenders are tracked down and not slapped with stinking trouts. This time we use frozen shark for a better educational value. Signed-off-by: Thomas Gleixner --- include/linux/irqdesc.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h index 581d9665fd38..36c95f08023d 100644 --- a/include/linux/irqdesc.h +++ b/include/linux/irqdesc.h @@ -64,7 +64,11 @@ struct irq_desc { unsigned int __percpu *kstat_irqs; irq_flow_handler_t handle_irq; struct irqaction *action; /* IRQ action list */ +#ifdef CONFIG_GENERIC_HARDIRQS_NO_COMPAT + unsigned int status_use_accessors; +#else unsigned int status; /* IRQ status */ +#endif unsigned int core_internal_state__do_not_mess_with_it; unsigned int depth; /* nested irq disables */ unsigned int wake_depth; /* nested wake enables */ @@ -164,6 +168,7 @@ static inline int irq_has_action(unsigned int irq) return desc->action != NULL; } +#ifndef CONFIG_GENERIC_HARDIRQS_NO_COMPAT static inline int irq_balancing_disabled(unsigned int irq) { struct irq_desc *desc; @@ -171,6 +176,7 @@ static inline int irq_balancing_disabled(unsigned int irq) desc = irq_to_desc(irq); return desc->status & IRQ_NO_BALANCING_MASK; } +#endif /* caller has locked the irq_desc and both params are valid */ static inline void __set_irq_handler_unlocked(int irq, -- cgit v1.2.3 From 3836ca08aad4575c120ccf328652f3873eea9063 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Mon, 14 Feb 2011 20:09:19 +0100 Subject: genirq: Consolidate set_chip_handler functions No need to have separate functions if we have one plus inline wrappers. Signed-off-by: Thomas Gleixner --- include/linux/irq.h | 51 +++++++++++++++++++++++++++++++++++++++------------ 1 file changed, 39 insertions(+), 12 deletions(-) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index c101ad4b821f..3e29e2f42e04 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -398,23 +398,23 @@ extern struct irq_chip no_irq_chip; extern struct irq_chip dummy_irq_chip; extern void -set_irq_chip_and_handler(unsigned int irq, struct irq_chip *chip, - irq_flow_handler_t handle); -extern void -set_irq_chip_and_handler_name(unsigned int irq, struct irq_chip *chip, +irq_set_chip_and_handler_name(unsigned int irq, struct irq_chip *chip, irq_flow_handler_t handle, const char *name); +static inline void irq_set_chip_and_handler(unsigned int irq, struct irq_chip *chip, + irq_flow_handler_t handle) +{ + irq_set_chip_and_handler_name(irq, chip, handle, NULL); +} + extern void -__set_irq_handler(unsigned int irq, irq_flow_handler_t handle, int is_chained, +__irq_set_handler(unsigned int irq, irq_flow_handler_t handle, int is_chained, const char *name); -/* - * Set a highlevel flow handler for a given IRQ: - */ static inline void -set_irq_handler(unsigned int irq, irq_flow_handler_t handle) +irq_set_handler(unsigned int irq, irq_flow_handler_t handle) { - __set_irq_handler(irq, handle, 0, NULL); + __irq_set_handler(irq, handle, 0, NULL); } /* @@ -423,9 +423,9 @@ set_irq_handler(unsigned int irq, irq_flow_handler_t handle) * IRQ_NOREQUEST and IRQ_NOPROBE) */ static inline void -set_irq_chained_handler(unsigned int irq, irq_flow_handler_t handle) +irq_set_chained_handler(unsigned int irq, irq_flow_handler_t handle) { - __set_irq_handler(irq, handle, 1, NULL); + __irq_set_handler(irq, handle, 1, NULL); } void irq_modify_status(unsigned int irq, unsigned long clr, unsigned long set); @@ -579,6 +579,33 @@ static inline void set_irq_nested_thread(unsigned int irq, int nest) { irq_set_nested_thread(irq, nest); } +static inline void +set_irq_chip_and_handler_name(unsigned int irq, struct irq_chip *chip, + irq_flow_handler_t handle, const char *name) +{ + irq_set_chip_and_handler_name(irq, chip, handle, name); +} +static inline void +set_irq_chip_and_handler(unsigned int irq, struct irq_chip *chip, + irq_flow_handler_t handle) +{ + irq_set_chip_and_handler(irq, chip, handle); +} +static inline void +__set_irq_handler(unsigned int irq, irq_flow_handler_t handle, int is_chained, + const char *name) +{ + __irq_set_handler(irq, handle, is_chained, name); +} +static inline void set_irq_handler(unsigned int irq, irq_flow_handler_t handle) +{ + irq_set_handler(irq, handle); +} +static inline void +set_irq_chained_handler(unsigned int irq, irq_flow_handler_t handle) +{ + irq_set_chained_handler(irq, handle); +} #endif int irq_alloc_descs(int irq, unsigned int from, unsigned int cnt, int node); -- cgit v1.2.3 From 781295762defc709a609efc01d8bb065276cd9a2 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Thu, 10 Feb 2011 15:14:20 +0100 Subject: genirq: Add preflow handler support sparc64 needs to call a preflow handler on certain interrupts befor calling the action chain. Integrate it into handle_fasteoi_irq. Must be enabled via CONFIG_IRQ_FASTEOI_PREFLOW. No impact when disabled. Signed-off-by: Thomas Gleixner Cc: David S. Miller --- include/linux/irq.h | 3 ++- include/linux/irqdesc.h | 14 ++++++++++++++ 2 files changed, 16 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index 3e29e2f42e04..36390970693c 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -29,9 +29,10 @@ #include struct irq_desc; +struct irq_data; typedef void (*irq_flow_handler_t)(unsigned int irq, struct irq_desc *desc); - +typedef void (*irq_preflow_handler_t)(struct irq_data *data); /* * IRQ line status. diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h index 36c95f08023d..2f87d6441302 100644 --- a/include/linux/irqdesc.h +++ b/include/linux/irqdesc.h @@ -63,6 +63,9 @@ struct irq_desc { struct timer_rand_state *timer_rand_state; unsigned int __percpu *kstat_irqs; irq_flow_handler_t handle_irq; +#ifdef CONFIG_IRQ_PREFLOW_FASTEOI + irq_preflow_handler_t preflow_handler; +#endif struct irqaction *action; /* IRQ action list */ #ifdef CONFIG_GENERIC_HARDIRQS_NO_COMPAT unsigned int status_use_accessors; @@ -187,6 +190,17 @@ static inline void __set_irq_handler_unlocked(int irq, desc = irq_to_desc(irq); desc->handle_irq = handler; } + +#ifdef CONFIG_IRQ_PREFLOW_FASTEOI +static inline void +__irq_set_preflow_handler(unsigned int irq, irq_preflow_handler_t handler) +{ + struct irq_desc *desc; + + desc = irq_to_desc(irq); + desc->preflow_handler = handler; +} +#endif #endif #endif -- cgit v1.2.3 From 77694b408abb8f92195ad5ed6ce5492f1d794c77 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Tue, 15 Feb 2011 10:33:57 +0100 Subject: genirq; Add fasteoi irq_chip quirk Some chips want irq_eoi() only called when an interrupt is actually handled. So they have checks for INPROGRESS and DISABLED in their irq_eoi callbacks. Add a chip flag, which allows to handle that in the generic code. No impact on the fastpath. Signed-off-by: Thomas Gleixner --- include/linux/irq.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index 36390970693c..ea2970c294aa 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -328,10 +328,12 @@ struct irq_chip { /* * irq_chip specific flags * - * IRQCHIP_SET_TYPE_MASKED: Mask before calling chip.irq_set_type() + * IRQCHIP_SET_TYPE_MASKED: Mask before calling chip.irq_set_type() + * IRQCHIP_EOI_IF_HANDLED: Only issue irq_eoi() when irq was handled */ enum { IRQCHIP_SET_TYPE_MASKED = (1 << 0), + IRQCHIP_EOI_IF_HANDLED = (1 << 1), }; /* This include will go away once we isolated irq_desc usage to core code */ -- cgit v1.2.3 From a439520f8b18917b322f576be04c54aba84bb044 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Fri, 4 Feb 2011 18:46:16 +0100 Subject: genirq: Implement irq_data based move_*_irq() versions No need to lookup the irq descriptor when calling from a chip callback function which has irq_data already handy. Signed-off-by: Thomas Gleixner --- include/linux/irq.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index ea2970c294aa..ff62d0145b8f 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -363,9 +363,13 @@ extern void remove_irq(unsigned int irq, struct irqaction *act); #if defined(CONFIG_SMP) && defined(CONFIG_GENERIC_PENDING_IRQ) void move_native_irq(int irq); void move_masked_irq(int irq); +void irq_move_irq(struct irq_data *data); +void irq_move_masked_irq(struct irq_data *data); #else static inline void move_native_irq(int irq) { } static inline void move_masked_irq(int irq) { } +static inline void irq_move_irq(struct irq_data *data) { } +static inline void irq_move_masked_irq(struct irq_data *data) { } #endif extern int no_irq_affinity; -- cgit v1.2.3 From 226111d1fbe611bc7a5ffaa5275ccb41e73fd011 Mon Sep 17 00:00:00 2001 From: John Fastabend Date: Fri, 18 Feb 2011 13:30:17 +0000 Subject: net: dcb: match dcb_app protocol field with 802.1Qaz spec The dcb_app protocol field is a __u32 however the 802.1Qaz specification defines it as a 16 bit field. This patch brings the structure inline with the spec making it a __u16. CC: Shmulik Ravid Signed-off-by: John Fastabend Signed-off-by: David S. Miller --- include/linux/dcbnl.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/dcbnl.h b/include/linux/dcbnl.h index 68cd248f6d3e..66900e3c6eb1 100644 --- a/include/linux/dcbnl.h +++ b/include/linux/dcbnl.h @@ -101,8 +101,8 @@ struct ieee_pfc { */ struct dcb_app { __u8 selector; - __u32 protocol; __u8 priority; + __u16 protocol; }; struct dcbmsg { -- cgit v1.2.3 From 964de52147c2842092642512e6f654fc2ab51408 Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Wed, 2 Feb 2011 23:21:58 -0800 Subject: Input: qt602240_ts - rename to atmel_mxt_ts Since the driver will be supporting whole range of Atmels mXT touchscreen controllers we better rename it to atmel_mxt_ts. Acked-by: Iiro Valkonen Signed-off-by: Dmitry Torokhov --- include/linux/i2c/atmel_mxt_ts.h | 38 ++++++++++++++++++++++++++++++++++++++ include/linux/i2c/qt602240_ts.h | 38 -------------------------------------- 2 files changed, 38 insertions(+), 38 deletions(-) create mode 100644 include/linux/i2c/atmel_mxt_ts.h delete mode 100644 include/linux/i2c/qt602240_ts.h (limited to 'include/linux') diff --git a/include/linux/i2c/atmel_mxt_ts.h b/include/linux/i2c/atmel_mxt_ts.h new file mode 100644 index 000000000000..c5033e101094 --- /dev/null +++ b/include/linux/i2c/atmel_mxt_ts.h @@ -0,0 +1,38 @@ +/* + * AT42QT602240/ATMXT224 Touchscreen driver + * + * Copyright (C) 2010 Samsung Electronics Co.Ltd + * Author: Joonyoung Shim + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#ifndef __LINUX_QT602240_TS_H +#define __LINUX_QT602240_TS_H + +/* Orient */ +#define QT602240_NORMAL 0x0 +#define QT602240_DIAGONAL 0x1 +#define QT602240_HORIZONTAL_FLIP 0x2 +#define QT602240_ROTATED_90_COUNTER 0x3 +#define QT602240_VERTICAL_FLIP 0x4 +#define QT602240_ROTATED_90 0x5 +#define QT602240_ROTATED_180 0x6 +#define QT602240_DIAGONAL_COUNTER 0x7 + +/* The platform data for the AT42QT602240/ATMXT224 touchscreen driver */ +struct qt602240_platform_data { + unsigned int x_line; + unsigned int y_line; + unsigned int x_size; + unsigned int y_size; + unsigned int blen; + unsigned int threshold; + unsigned int voltage; + unsigned char orient; +}; + +#endif /* __LINUX_QT602240_TS_H */ diff --git a/include/linux/i2c/qt602240_ts.h b/include/linux/i2c/qt602240_ts.h deleted file mode 100644 index c5033e101094..000000000000 --- a/include/linux/i2c/qt602240_ts.h +++ /dev/null @@ -1,38 +0,0 @@ -/* - * AT42QT602240/ATMXT224 Touchscreen driver - * - * Copyright (C) 2010 Samsung Electronics Co.Ltd - * Author: Joonyoung Shim - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - */ - -#ifndef __LINUX_QT602240_TS_H -#define __LINUX_QT602240_TS_H - -/* Orient */ -#define QT602240_NORMAL 0x0 -#define QT602240_DIAGONAL 0x1 -#define QT602240_HORIZONTAL_FLIP 0x2 -#define QT602240_ROTATED_90_COUNTER 0x3 -#define QT602240_VERTICAL_FLIP 0x4 -#define QT602240_ROTATED_90 0x5 -#define QT602240_ROTATED_180 0x6 -#define QT602240_DIAGONAL_COUNTER 0x7 - -/* The platform data for the AT42QT602240/ATMXT224 touchscreen driver */ -struct qt602240_platform_data { - unsigned int x_line; - unsigned int y_line; - unsigned int x_size; - unsigned int y_size; - unsigned int blen; - unsigned int threshold; - unsigned int voltage; - unsigned char orient; -}; - -#endif /* __LINUX_QT602240_TS_H */ -- cgit v1.2.3 From 7686b108d8ef5c32f429d5228798636f3a1caf5a Mon Sep 17 00:00:00 2001 From: Iiro Valkonen Date: Wed, 2 Feb 2011 23:21:58 -0800 Subject: Input: atmel_mxt_ts - get rid of qt602240 prefixes in names Change prefixes from qt602240 to mxt to reflect that the driver supports whole line of mXT touchscreens. Signed-off-by: Iiro Valkonen Signed-off-by: Dmitry Torokhov --- include/linux/i2c/atmel_mxt_ts.h | 28 ++++++++++++++-------------- 1 file changed, 14 insertions(+), 14 deletions(-) (limited to 'include/linux') diff --git a/include/linux/i2c/atmel_mxt_ts.h b/include/linux/i2c/atmel_mxt_ts.h index c5033e101094..671967cf4d1a 100644 --- a/include/linux/i2c/atmel_mxt_ts.h +++ b/include/linux/i2c/atmel_mxt_ts.h @@ -1,5 +1,5 @@ /* - * AT42QT602240/ATMXT224 Touchscreen driver + * Atmel maXTouch Touchscreen driver * * Copyright (C) 2010 Samsung Electronics Co.Ltd * Author: Joonyoung Shim @@ -10,21 +10,21 @@ * option) any later version. */ -#ifndef __LINUX_QT602240_TS_H -#define __LINUX_QT602240_TS_H +#ifndef __LINUX_ATMEL_MXT_TS_H +#define __LINUX_ATMEL_MXT_TS_H /* Orient */ -#define QT602240_NORMAL 0x0 -#define QT602240_DIAGONAL 0x1 -#define QT602240_HORIZONTAL_FLIP 0x2 -#define QT602240_ROTATED_90_COUNTER 0x3 -#define QT602240_VERTICAL_FLIP 0x4 -#define QT602240_ROTATED_90 0x5 -#define QT602240_ROTATED_180 0x6 -#define QT602240_DIAGONAL_COUNTER 0x7 +#define MXT_NORMAL 0x0 +#define MXT_DIAGONAL 0x1 +#define MXT_HORIZONTAL_FLIP 0x2 +#define MXT_ROTATED_90_COUNTER 0x3 +#define MXT_VERTICAL_FLIP 0x4 +#define MXT_ROTATED_90 0x5 +#define MXT_ROTATED_180 0x6 +#define MXT_DIAGONAL_COUNTER 0x7 -/* The platform data for the AT42QT602240/ATMXT224 touchscreen driver */ -struct qt602240_platform_data { +/* The platform data for the Atmel maXTouch touchscreen driver */ +struct mxt_platform_data { unsigned int x_line; unsigned int y_line; unsigned int x_size; @@ -35,4 +35,4 @@ struct qt602240_platform_data { unsigned char orient; }; -#endif /* __LINUX_QT602240_TS_H */ +#endif /* __LINUX_ATMEL_MXT_TS_H */ -- cgit v1.2.3 From 71749f5c66e797a39600dae9de58aab3858dc488 Mon Sep 17 00:00:00 2001 From: Iiro Valkonen Date: Tue, 15 Feb 2011 13:36:52 -0800 Subject: Input: atmel_mxt_ts - allow board code to suppliy controller config As there is no common configuration settings that would work in every situation, remove the fixed config data from driver code and add config data to platform data. Signed-off-by: Iiro Valkonen Signed-off-by: Dmitry Torokhov --- include/linux/i2c/atmel_mxt_ts.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/i2c/atmel_mxt_ts.h b/include/linux/i2c/atmel_mxt_ts.h index 671967cf4d1a..b8297685f489 100644 --- a/include/linux/i2c/atmel_mxt_ts.h +++ b/include/linux/i2c/atmel_mxt_ts.h @@ -13,6 +13,8 @@ #ifndef __LINUX_ATMEL_MXT_TS_H #define __LINUX_ATMEL_MXT_TS_H +#include + /* Orient */ #define MXT_NORMAL 0x0 #define MXT_DIAGONAL 0x1 @@ -25,6 +27,9 @@ /* The platform data for the Atmel maXTouch touchscreen driver */ struct mxt_platform_data { + const u8 *config; + size_t config_length; + unsigned int x_line; unsigned int y_line; unsigned int x_size; -- cgit v1.2.3 From 919ed895f0b4227da26ea1b0a1347db5010f105e Mon Sep 17 00:00:00 2001 From: Iiro Valkonen Date: Tue, 15 Feb 2011 13:36:52 -0800 Subject: Input: atmel_mxt_ts - allow board code to specify IRQ flags Different board have different requirements/setups so let's be more flexible. Signed-off-by: Iiro Valkonen Signed-off-by: Dmitry Torokhov --- include/linux/i2c/atmel_mxt_ts.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/i2c/atmel_mxt_ts.h b/include/linux/i2c/atmel_mxt_ts.h index b8297685f489..f027f7a63511 100644 --- a/include/linux/i2c/atmel_mxt_ts.h +++ b/include/linux/i2c/atmel_mxt_ts.h @@ -38,6 +38,7 @@ struct mxt_platform_data { unsigned int threshold; unsigned int voltage; unsigned char orient; + unsigned long irqflags; }; #endif /* __LINUX_ATMEL_MXT_TS_H */ -- cgit v1.2.3 From 24d51add7438f9696a7205927bf9de3c5c787a58 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Mon, 21 Feb 2011 09:52:50 +0100 Subject: workqueue: fix build failure introduced by s/freezeable/freezable/ wq:fixes-2.6.38 does s/WQ_FREEZEABLE/WQ_FREEZABLE and wq:for-2.6.39 adds new usage of the flag. The combination of the two creates a build failure after merge. Fix it by renaming all freezeables to freezables. Signed-off-by: Tejun Heo Reported-by: Stephen Rothwell --- include/linux/workqueue.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/workqueue.h b/include/linux/workqueue.h index d110cc4f9fed..f584aba78ca9 100644 --- a/include/linux/workqueue.h +++ b/include/linux/workqueue.h @@ -287,14 +287,14 @@ enum { * executed immediately as long as max_active limit is not reached and * resources are available. * - * system_freezeable_wq is equivalent to system_wq except that it's - * freezeable. + * system_freezable_wq is equivalent to system_wq except that it's + * freezable. */ extern struct workqueue_struct *system_wq; extern struct workqueue_struct *system_long_wq; extern struct workqueue_struct *system_nrt_wq; extern struct workqueue_struct *system_unbound_wq; -extern struct workqueue_struct *system_freezeable_wq; +extern struct workqueue_struct *system_freezable_wq; extern struct workqueue_struct * __alloc_workqueue_key(const char *name, unsigned int flags, int max_active, -- cgit v1.2.3 From e06383db9ec591696a06654257474b85bac1f8cb Mon Sep 17 00:00:00 2001 From: John Stultz Date: Tue, 14 Dec 2010 19:37:07 -0800 Subject: hrtimers: extend hrtimer base code to handle more then 2 clockids MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The hrtimer code is written mainly with CLOCK_REALTIME and CLOCK_MONOTONIC in mind. These are clockids 0 and 1 resepctively. However, if we are to introduce any new hrtimer bases, using new clockids, we have to skip the cputimers (clockids 2,3) as well as other clockids that may not impelement timers. This patch adds a little bit of indirection between the clockid and the base, so that we can extend the base by one when we add a new clockid at number 7 or so. CC: Jamie Lokier CC: Thomas Gleixner CC: Alexander Shishkin CC: Arve Hjønnevåg Signed-off-by: John Stultz --- include/linux/hrtimer.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/hrtimer.h b/include/linux/hrtimer.h index f376ddc64c4d..20b8e6601a04 100644 --- a/include/linux/hrtimer.h +++ b/include/linux/hrtimer.h @@ -148,7 +148,11 @@ struct hrtimer_clock_base { #endif }; -#define HRTIMER_MAX_CLOCK_BASES 2 +enum hrtimer_base_type { + HRTIMER_BASE_REALTIME, + HRTIMER_BASE_MONOTONIC, + HRTIMER_MAX_CLOCK_BASES, +}; /* * struct hrtimer_cpu_base - the per cpu clock bases -- cgit v1.2.3 From abb3a4ea2e0ea7114a4475745da2f32bd9ad5b73 Mon Sep 17 00:00:00 2001 From: John Stultz Date: Mon, 14 Feb 2011 17:52:09 -0800 Subject: time: Introduce get_monotonic_boottime and ktime_get_boottime MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This adds new functions that return the monotonic time since boot (in other words, CLOCK_MONOTONIC + suspend time). CC: Jamie Lokier CC: Thomas Gleixner CC: Alexander Shishkin CC: Arve Hjønnevåg Signed-off-by: John Stultz --- include/linux/hrtimer.h | 1 + include/linux/time.h | 1 + 2 files changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/hrtimer.h b/include/linux/hrtimer.h index 20b8e6601a04..7a9e7ee0f35c 100644 --- a/include/linux/hrtimer.h +++ b/include/linux/hrtimer.h @@ -312,6 +312,7 @@ static inline int hrtimer_is_hres_active(struct hrtimer *timer) extern ktime_t ktime_get(void); extern ktime_t ktime_get_real(void); +extern ktime_t ktime_get_boottime(void); DECLARE_PER_CPU(struct tick_device, tick_cpu_device); diff --git a/include/linux/time.h b/include/linux/time.h index 379b9037b5b4..fa39150cb816 100644 --- a/include/linux/time.h +++ b/include/linux/time.h @@ -161,6 +161,7 @@ extern void getnstime_raw_and_real(struct timespec *ts_raw, struct timespec *ts_real); extern void getboottime(struct timespec *ts); extern void monotonic_to_bootbased(struct timespec *ts); +extern void get_monotonic_boottime(struct timespec *ts); extern struct timespec timespec_trunc(struct timespec t, unsigned gran); extern int timekeeping_valid_for_hres(void); -- cgit v1.2.3 From 314ac37150011ebb398f522db528d2dbcc611189 Mon Sep 17 00:00:00 2001 From: John Stultz Date: Mon, 14 Feb 2011 18:43:08 -0800 Subject: time: Extend get_xtime_and_monotonic_offset() to also return sleep MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Extend get_xtime_and_monotonic_offset to get_xtime_and_monotonic_and_sleep_offset(). CC: Jamie Lokier CC: Thomas Gleixner CC: Alexander Shishkin CC: Arve Hjønnevåg Signed-off-by: John Stultz --- include/linux/time.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/time.h b/include/linux/time.h index fa39150cb816..02d48fb30b41 100644 --- a/include/linux/time.h +++ b/include/linux/time.h @@ -124,7 +124,8 @@ unsigned long get_seconds(void); struct timespec current_kernel_time(void); struct timespec __current_kernel_time(void); /* does not take xtime_lock */ struct timespec get_monotonic_coarse(void); -void get_xtime_and_monotonic_offset(struct timespec *xtim, struct timespec *wtom); +void get_xtime_and_monotonic_and_sleep_offset(struct timespec *xtim, + struct timespec *wtom, struct timespec *sleep); #define CURRENT_TIME (current_kernel_time()) #define CURRENT_TIME_SEC ((struct timespec) { get_seconds(), 0 }) -- cgit v1.2.3 From 70a08cca1227dc31c784ec930099a4417a06e7d0 Mon Sep 17 00:00:00 2001 From: John Stultz Date: Tue, 15 Feb 2011 10:45:16 -0800 Subject: timers: Add CLOCK_BOOTTIME hrtimer base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit CLOCK_MONOTONIC stops while the system is in suspend. This is because to applications system suspend is invisible. However, there is a growing set of applications that are wanting to be suspend-aware, but do not want to deal with the complications of CLOCK_REALTIME (which might jump around if settimeofday is called). For these applications, I propose a new clockid: CLOCK_BOOTTIME. CLOCK_BOOTTIME is idential to CLOCK_MONOTONIC, except it also includes any time spent in suspend. This patch add hrtimer base for CLOCK_BOOTTIME, using get_monotonic_boottime/ktime_get_boottime, to allow in kernel users to set timers against. CC: Jamie Lokier CC: Thomas Gleixner CC: Alexander Shishkin CC: Arve Hjønnevåg Signed-off-by: John Stultz --- include/linux/hrtimer.h | 1 + include/linux/time.h | 1 + 2 files changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/hrtimer.h b/include/linux/hrtimer.h index 7a9e7ee0f35c..6bc1804bfbfa 100644 --- a/include/linux/hrtimer.h +++ b/include/linux/hrtimer.h @@ -151,6 +151,7 @@ struct hrtimer_clock_base { enum hrtimer_base_type { HRTIMER_BASE_REALTIME, HRTIMER_BASE_MONOTONIC, + HRTIMER_BASE_BOOTTIME, HRTIMER_MAX_CLOCK_BASES, }; diff --git a/include/linux/time.h b/include/linux/time.h index 02d48fb30b41..454a26205787 100644 --- a/include/linux/time.h +++ b/include/linux/time.h @@ -293,6 +293,7 @@ struct itimerval { #define CLOCK_MONOTONIC_RAW 4 #define CLOCK_REALTIME_COARSE 5 #define CLOCK_MONOTONIC_COARSE 6 +#define CLOCK_BOOTTIME 7 /* * The IDs of various hardware clocks: -- cgit v1.2.3 From 98562ad8cb03fa6b7ba7f50168cdb34a98abcc1d Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Fri, 4 Feb 2011 13:30:10 -0800 Subject: module: explicitly align module_version_attribute structure We force particular alignment when we generate attribute structures when generation MODULE_VERSION() data and we need to make sure that this alignment is followed when we iterate over these structures, otherwise we may crash on platforms whose natural alignment is not sizeof(void *), such as m68k. Reported-by: Geert Uytterhoeven Signed-off-by: Dmitry Torokhov [ There are more issues here, but the fixes are incredibly ugly - Linus ] Signed-off-by: Linus Torvalds --- include/linux/module.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/module.h b/include/linux/module.h index 9bdf27c7615b..5de42043dff0 100644 --- a/include/linux/module.h +++ b/include/linux/module.h @@ -62,7 +62,7 @@ struct module_version_attribute { struct module_attribute mattr; const char *module_name; const char *version; -}; +} __attribute__ ((__aligned__(sizeof(void *)))); struct module_kobject { -- cgit v1.2.3 From 7fb7ba588c0f276609609565b21fcc853284a9a0 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Mon, 24 May 2010 19:55:27 +0200 Subject: bq27x00: Add bq27000 support This patch adds support for the bq27000 battery to the bq27x00 driver. The bq27000 is similar to the bq27200 except that it uses the HDQ bus instead of I2C to communicate with the host system. The driver is implemented as a platform driver. The driver expects to be provided with a read callback function through its platform data. The read function is assumed to do the lowlevel HDQ handling and read out the value of a certain register. Signed-off-by: Lars-Peter Clausen Tested-by: Grazvydas Ignotas --- include/linux/power/bq27x00_battery.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) create mode 100644 include/linux/power/bq27x00_battery.h (limited to 'include/linux') diff --git a/include/linux/power/bq27x00_battery.h b/include/linux/power/bq27x00_battery.h new file mode 100644 index 000000000000..a857f719bf40 --- /dev/null +++ b/include/linux/power/bq27x00_battery.h @@ -0,0 +1,19 @@ +#ifndef __LINUX_BQ27X00_BATTERY_H__ +#define __LINUX_BQ27X00_BATTERY_H__ + +/** + * struct bq27000_plaform_data - Platform data for bq27000 devices + * @name: Name of the battery. If NULL the driver will fallback to "bq27000". + * @read: HDQ read callback. + * This function should provide access to the HDQ bus the battery is + * connected to. + * The first parameter is a pointer to the battery device, the second the + * register to be read. The return value should either be the content of + * the passed register or an error value. + */ +struct bq27000_platform_data { + const char *name; + int (*read)(struct device *dev, unsigned int); +}; + +#endif -- cgit v1.2.3 From eaefd1105bc431ef329599e307a07f2a36ae7872 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Fri, 18 Feb 2011 03:26:36 +0000 Subject: net: add __rcu annotations to sk_wq and wq Add proper RCU annotations/verbs to sk_wq and wq members Fix __sctp_write_space() sk_sleep() abuse (and sock->wq access) Fix sunrpc sk_sleep() abuse too Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- include/linux/net.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/net.h b/include/linux/net.h index 16faa130088c..94de83c0f877 100644 --- a/include/linux/net.h +++ b/include/linux/net.h @@ -118,6 +118,7 @@ enum sock_shutdown_cmd { }; struct socket_wq { + /* Note: wait MUST be first field of socket_wq */ wait_queue_head_t wait; struct fasync_struct *fasync_list; struct rcu_head rcu; @@ -142,7 +143,7 @@ struct socket { unsigned long flags; - struct socket_wq *wq; + struct socket_wq __rcu *wq; struct file *file; struct sock *sk; -- cgit v1.2.3 From 9b7c525dfaa9a1b5f01db1f3a1edc50bbb6eb739 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Thu, 17 Feb 2011 20:05:44 -0800 Subject: ASoC: Support WM8958 direct microphone detection IRQ Allow direct routing of the WM8958 microphone detection signal to a GPIO to be used, saving the need to demux the interrupt. Signed-off-by: Mark Brown Acked-by: Liam Girdwood --- include/linux/mfd/wm8994/pdata.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/wm8994/pdata.h b/include/linux/mfd/wm8994/pdata.h index 9eab263658be..06869466b7f0 100644 --- a/include/linux/mfd/wm8994/pdata.h +++ b/include/linux/mfd/wm8994/pdata.h @@ -103,6 +103,11 @@ struct wm8994_pdata { unsigned int lineout1fb:1; unsigned int lineout2fb:1; + /* IRQ for microphone detection if brought out directly as a + * signal. + */ + int micdet_irq; + /* Microphone biases: 0=0.9*AVDD1 1=0.65*AVVD1 */ unsigned int micbias1_lvl:1; unsigned int micbias2_lvl:1; -- cgit v1.2.3 From 48e028eccabc9c246bfad175262582a1ce34a316 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Mon, 21 Feb 2011 17:11:59 -0800 Subject: ASoC: Support configuration of WM8958 microphone bias analogue parameters The WM8958 has a different microphone bias architecture to WM8994 so needs different configuration to WM8994. Support this in platform data. Signed-off-by: Mark Brown Acked-by: Liam Girdwood --- include/linux/mfd/wm8994/pdata.h | 7 +++++-- include/linux/mfd/wm8994/registers.h | 2 ++ 2 files changed, 7 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/wm8994/pdata.h b/include/linux/mfd/wm8994/pdata.h index 06869466b7f0..466b1c777aff 100644 --- a/include/linux/mfd/wm8994/pdata.h +++ b/include/linux/mfd/wm8994/pdata.h @@ -108,13 +108,16 @@ struct wm8994_pdata { */ int micdet_irq; - /* Microphone biases: 0=0.9*AVDD1 1=0.65*AVVD1 */ + /* WM8994 microphone biases: 0=0.9*AVDD1 1=0.65*AVVD1 */ unsigned int micbias1_lvl:1; unsigned int micbias2_lvl:1; - /* Jack detect threashold levels, see datasheet for values */ + /* WM8994 jack detect threashold levels, see datasheet for values */ unsigned int jd_scthr:2; unsigned int jd_thr:2; + + /* WM8958 microphone bias configuration */ + int micbias[2]; }; #endif diff --git a/include/linux/mfd/wm8994/registers.h b/include/linux/mfd/wm8994/registers.h index be072faec6f0..f3ee84284670 100644 --- a/include/linux/mfd/wm8994/registers.h +++ b/include/linux/mfd/wm8994/registers.h @@ -63,6 +63,8 @@ #define WM8994_MICBIAS 0x3A #define WM8994_LDO_1 0x3B #define WM8994_LDO_2 0x3C +#define WM8958_MICBIAS1 0x3D +#define WM8958_MICBIAS2 0x3E #define WM8994_CHARGE_PUMP_1 0x4C #define WM8958_CHARGE_PUMP_2 0x4D #define WM8994_CLASS_W_1 0x51 -- cgit v1.2.3 From ce792580ea2ce6f7259b45124e9ccc4574c31606 Mon Sep 17 00:00:00 2001 From: Thomas Chou Date: Mon, 14 Feb 2011 10:20:39 +0800 Subject: spi: add OpenCores tiny SPI driver This patch adds support of OpenCores tiny SPI driver. http://opencores.org/project,tiny_spi Signed-off-by: Thomas Chou Signed-off-by: Grant Likely --- include/linux/spi/spi_oc_tiny.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) create mode 100644 include/linux/spi/spi_oc_tiny.h (limited to 'include/linux') diff --git a/include/linux/spi/spi_oc_tiny.h b/include/linux/spi/spi_oc_tiny.h new file mode 100644 index 000000000000..1ac529cf4f06 --- /dev/null +++ b/include/linux/spi/spi_oc_tiny.h @@ -0,0 +1,20 @@ +#ifndef _LINUX_SPI_SPI_OC_TINY_H +#define _LINUX_SPI_SPI_OC_TINY_H + +/** + * struct tiny_spi_platform_data - platform data of the OpenCores tiny SPI + * @freq: input clock freq to the core. + * @baudwidth: baud rate divider width of the core. + * @gpio_cs_count: number of gpio pins used for chipselect. + * @gpio_cs: array of gpio pins used for chipselect. + * + * freq and baudwidth are used only if the divider is programmable. + */ +struct tiny_spi_platform_data { + unsigned int freq; + unsigned int baudwidth; + unsigned int gpio_cs_count; + int *gpio_cs; +}; + +#endif /* _LINUX_SPI_SPI_OC_TINY_H */ -- cgit v1.2.3 From db811ca0f48578f9940f49f284ac81e336b264ad Mon Sep 17 00:00:00 2001 From: Colin Cross Date: Sun, 20 Feb 2011 17:14:21 -0800 Subject: i2c: tegra: Add i2c support Adds I2C bus driver for nVidia Tegra SoCs. Tegra includes 4 I2C controllers, one of which is inside the Dynamic Voltage Controller and has a slightly different register map. Signed-off-by: Colin Cross Signed-off-by: Ben Dooks --- include/linux/i2c-tegra.h | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 include/linux/i2c-tegra.h (limited to 'include/linux') diff --git a/include/linux/i2c-tegra.h b/include/linux/i2c-tegra.h new file mode 100644 index 000000000000..9c85da49857a --- /dev/null +++ b/include/linux/i2c-tegra.h @@ -0,0 +1,25 @@ +/* + * drivers/i2c/busses/i2c-tegra.c + * + * Copyright (C) 2010 Google, Inc. + * Author: Colin Cross + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#ifndef _LINUX_I2C_TEGRA_H +#define _LINUX_I2C_TEGRA_H + +struct tegra_i2c_platform_data { + unsigned long bus_clk_rate; +}; + +#endif /* _LINUX_I2C_TEGRA_H */ -- cgit v1.2.3 From e33f770426674a565a188042caf3f974f8b3722d Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Tue, 22 Feb 2011 18:13:15 -0800 Subject: xfrm: Mark flowi arg to security_xfrm_state_pol_flow_match() const. Signed-off-by: David S. Miller --- include/linux/security.h | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/security.h b/include/linux/security.h index b2b7f9749f5e..9b5f184a7f65 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -1623,7 +1623,7 @@ struct security_operations { int (*xfrm_policy_lookup) (struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir); int (*xfrm_state_pol_flow_match) (struct xfrm_state *x, struct xfrm_policy *xp, - struct flowi *fl); + const struct flowi *fl); int (*xfrm_decode_session) (struct sk_buff *skb, u32 *secid, int ckall); #endif /* CONFIG_SECURITY_NETWORK_XFRM */ @@ -2761,7 +2761,8 @@ int security_xfrm_state_delete(struct xfrm_state *x); void security_xfrm_state_free(struct xfrm_state *x); int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir); int security_xfrm_state_pol_flow_match(struct xfrm_state *x, - struct xfrm_policy *xp, struct flowi *fl); + struct xfrm_policy *xp, + const struct flowi *fl); int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid); void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl); @@ -2813,7 +2814,7 @@ static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_s } static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x, - struct xfrm_policy *xp, struct flowi *fl) + struct xfrm_policy *xp, const struct flowi *fl) { return 1; } -- cgit v1.2.3 From 394d5aefcdecb51bbf7d6df757e73559c9692a08 Mon Sep 17 00:00:00 2001 From: Rob Herring Date: Sat, 12 Feb 2011 15:58:25 +0100 Subject: ARM: 6662/1: amba: make amba_bustype non-static Export amba_bustype struct so it can be used for things like registering bus notifiers. Signed-off-by: Rob Herring Signed-off-by: Russell King --- include/linux/amba/bus.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/amba/bus.h b/include/linux/amba/bus.h index 9e7f259346e1..a0ccf28e9741 100644 --- a/include/linux/amba/bus.h +++ b/include/linux/amba/bus.h @@ -56,6 +56,8 @@ enum amba_vendor { AMBA_VENDOR_ST = 0x80, }; +extern struct bus_type amba_bustype; + #define amba_get_drvdata(d) dev_get_drvdata(&d->dev) #define amba_set_drvdata(d,p) dev_set_drvdata(&d->dev, p) -- cgit v1.2.3 From aa25afad2ca60d19457849ea75e9c31236f4e174 Mon Sep 17 00:00:00 2001 From: Russell King Date: Sat, 19 Feb 2011 15:55:00 +0000 Subject: ARM: amba: make probe() functions take const id tables Make Primecell driver probe functions take a const pointer to their ID tables. Drivers should never modify their ID tables in their probe handler. Signed-off-by: Russell King --- include/linux/amba/bus.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/amba/bus.h b/include/linux/amba/bus.h index a0ccf28e9741..07b6374652dc 100644 --- a/include/linux/amba/bus.h +++ b/include/linux/amba/bus.h @@ -43,7 +43,7 @@ struct amba_id { struct amba_driver { struct device_driver drv; - int (*probe)(struct amba_device *, struct amba_id *); + int (*probe)(struct amba_device *, const struct amba_id *); int (*remove)(struct amba_device *); void (*shutdown)(struct amba_device *); int (*suspend)(struct amba_device *, pm_message_t); -- cgit v1.2.3 From 2d00880fa842e7dd34f5bb5eb3b5f8337b068be5 Mon Sep 17 00:00:00 2001 From: Russell King Date: Sat, 19 Feb 2011 15:55:48 +0000 Subject: ARM: amba: make amba_driver id_table const Now that the bus level code deals with a const id table, we can also make the ID table in the amba_driver structure also const. Signed-off-by: Russell King --- include/linux/amba/bus.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/amba/bus.h b/include/linux/amba/bus.h index 07b6374652dc..227d590cd8d5 100644 --- a/include/linux/amba/bus.h +++ b/include/linux/amba/bus.h @@ -48,7 +48,7 @@ struct amba_driver { void (*shutdown)(struct amba_device *); int (*suspend)(struct amba_device *, pm_message_t); int (*resume)(struct amba_device *); - struct amba_id *id_table; + const struct amba_id *id_table; }; enum amba_vendor { -- cgit v1.2.3 From ba74ec7f6b2bf9e1b5d0f2c5cef08766944cb2c8 Mon Sep 17 00:00:00 2001 From: Rabin Vincent Date: Wed, 23 Feb 2011 04:33:17 +0100 Subject: ARM: 6758/1: amba: support pm ops Support pm_ops in the AMBA bus, required to allow drivers to use runtime pm. The implementation of AMBA bus pm ops is based on the platform bus implementation. Acked-by: Rafael J. Wysocki Acked-by: Linus Walleij Signed-off-by: Rabin Vincent Signed-off-by: Russell King --- include/linux/amba/bus.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/amba/bus.h b/include/linux/amba/bus.h index 227d590cd8d5..fcbbe71a3cc1 100644 --- a/include/linux/amba/bus.h +++ b/include/linux/amba/bus.h @@ -58,6 +58,8 @@ enum amba_vendor { extern struct bus_type amba_bustype; +#define to_amba_device(d) container_of(d, struct amba_device, dev) + #define amba_get_drvdata(d) dev_get_drvdata(&d->dev) #define amba_set_drvdata(d,p) dev_set_drvdata(&d->dev, p) -- cgit v1.2.3 From 008536e8458613ce569595e43b0e71afa8b48ae8 Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Sat, 19 Feb 2011 15:45:29 -0800 Subject: connector: Convert char *name to const char *name Allow more const declarations. Signed-off-by: Joe Perches Acked-by: Evgeniy Polyakov Signed-off-by: Greg Kroah-Hartman --- include/linux/connector.h | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/connector.h b/include/linux/connector.h index 2e9759cdd275..bcafc942e5e4 100644 --- a/include/linux/connector.h +++ b/include/linux/connector.h @@ -129,14 +129,17 @@ struct cn_dev { struct cn_queue_dev *cbdev; }; -int cn_add_callback(struct cb_id *, char *, void (*callback) (struct cn_msg *, struct netlink_skb_parms *)); +int cn_add_callback(struct cb_id *id, const char *name, + void (*callback)(struct cn_msg *, struct netlink_skb_parms *)); void cn_del_callback(struct cb_id *); int cn_netlink_send(struct cn_msg *, u32, gfp_t); -int cn_queue_add_callback(struct cn_queue_dev *dev, char *name, struct cb_id *id, void (*callback)(struct cn_msg *, struct netlink_skb_parms *)); +int cn_queue_add_callback(struct cn_queue_dev *dev, const char *name, + struct cb_id *id, + void (*callback)(struct cn_msg *, struct netlink_skb_parms *)); void cn_queue_del_callback(struct cn_queue_dev *dev, struct cb_id *id); -struct cn_queue_dev *cn_queue_alloc_dev(char *name, struct sock *); +struct cn_queue_dev *cn_queue_alloc_dev(const char *name, struct sock *); void cn_queue_free_dev(struct cn_queue_dev *dev); int cn_cb_equal(struct cb_id *, struct cb_id *); -- cgit v1.2.3 From 3bcbaf6e08d8d82cde781997bd2c56dda87049b5 Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Tue, 22 Feb 2011 21:07:46 +0100 Subject: rtc: cmos: Add OF bindings This allows to load the OF driver based informations from the device tree. Systems without BIOS may need to perform some initialization. PowerPC creates a PNP device from the OF information and performs this kind of initialization in their private PCI quirk. This looks more generic. This patch also avoids registering the platform RTC driver on X86 if we have a device tree blob. Otherwise we would setup the device based on the hardcoded information in arch/x86 rather than the device tree based one. [ tglx: Changed "int of_have_populated_dt()" to bool as recommended by Grant ] Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Dirk Brandewie Acked-by: Grant Likely Cc: sodaville@linutronix.de Cc: devicetree-discuss@lists.ozlabs.org Cc: rtc-linux@googlegroups.com Cc: Alessandro Zummo LKML-Reference: <1298405266-1624-12-git-send-email-bigeasy@linutronix.de> Signed-off-by: Thomas Gleixner --- include/linux/of.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'include/linux') diff --git a/include/linux/of.h b/include/linux/of.h index d9dd664a6a9c..266db1d0baa9 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -70,6 +70,11 @@ extern struct device_node *allnodes; extern struct device_node *of_chosen; extern rwlock_t devtree_lock; +static inline bool of_have_populated_dt(void) +{ + return allnodes != NULL; +} + static inline bool of_node_is_root(const struct device_node *node) { return node && (node->parent == NULL); @@ -222,5 +227,12 @@ extern void of_attach_node(struct device_node *); extern void of_detach_node(struct device_node *); #endif +#else + +static inline bool of_have_populated_dt(void) +{ + return false; +} + #endif /* CONFIG_OF */ #endif /* _LINUX_OF_H */ -- cgit v1.2.3 From e13e02a3c68d899169c78d9a18689bd73491d59a Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Wed, 23 Feb 2011 10:56:17 +0000 Subject: net_sched: SFB flow scheduler This is the Stochastic Fair Blue scheduler, based on work from : W. Feng, D. Kandlur, D. Saha, K. Shin. Blue: A New Class of Active Queue Management Algorithms. U. Michigan CSE-TR-387-99, April 1999. http://www.thefengs.com/wuchang/blue/CSE-TR-387-99.pdf This implementation is based on work done by Juliusz Chroboczek General SFB algorithm can be found in figure 14, page 15: B[l][n] : L x N array of bins (L levels, N bins per level) enqueue() Calculate hash function values h{0}, h{1}, .. h{L-1} Update bins at each level for i = 0 to L - 1 if (B[i][h{i}].qlen > bin_size) B[i][h{i}].p_mark += p_increment; else if (B[i][h{i}].qlen == 0) B[i][h{i}].p_mark -= p_decrement; p_min = min(B[0][h{0}].p_mark ... B[L-1][h{L-1}].p_mark); if (p_min == 1.0) ratelimit(); else mark/drop with probabilty p_min; I did the adaptation of Juliusz code to meet current kernel standards, and various changes to address previous comments : http://thread.gmane.org/gmane.linux.network/90225 http://thread.gmane.org/gmane.linux.network/90375 Default flow classifier is the rxhash introduced by RPS in 2.6.35, but we can use an external flow classifier if wanted. tc qdisc add dev $DEV parent 1:11 handle 11: \ est 0.5sec 2sec sfb limit 128 tc filter add dev $DEV protocol ip parent 11: handle 3 \ flow hash keys dst divisor 1024 Notes: 1) SFB default child qdisc is pfifo_fast. It can be changed by another qdisc but a child qdisc MUST not drop a packet previously queued. This is because SFB needs to handle a dequeued packet in order to maintain its virtual queue states. pfifo_head_drop or CHOKe should not be used. 2) ECN is enabled by default, unlike RED/CHOKe/GRED With help from Patrick McHardy & Andi Kleen Signed-off-by: Eric Dumazet CC: Juliusz Chroboczek CC: Stephen Hemminger CC: Patrick McHardy CC: Andi Kleen CC: John W. Linville Signed-off-by: David S. Miller --- include/linux/pkt_sched.h | 39 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pkt_sched.h b/include/linux/pkt_sched.h index d4bb6f58c90c..5afee2b238bd 100644 --- a/include/linux/pkt_sched.h +++ b/include/linux/pkt_sched.h @@ -522,4 +522,43 @@ struct tc_mqprio_qopt { __u16 offset[TC_QOPT_MAX_QUEUE]; }; +/* SFB */ + +enum { + TCA_SFB_UNSPEC, + TCA_SFB_PARMS, + __TCA_SFB_MAX, +}; + +#define TCA_SFB_MAX (__TCA_SFB_MAX - 1) + +/* + * Note: increment, decrement are Q0.16 fixed-point values. + */ +struct tc_sfb_qopt { + __u32 rehash_interval; /* delay between hash move, in ms */ + __u32 warmup_time; /* double buffering warmup time in ms (warmup_time < rehash_interval) */ + __u32 max; /* max len of qlen_min */ + __u32 bin_size; /* maximum queue length per bin */ + __u32 increment; /* probability increment, (d1 in Blue) */ + __u32 decrement; /* probability decrement, (d2 in Blue) */ + __u32 limit; /* max SFB queue length */ + __u32 penalty_rate; /* inelastic flows are rate limited to 'rate' pps */ + __u32 penalty_burst; +}; + +struct tc_sfb_xstats { + __u32 earlydrop; + __u32 penaltydrop; + __u32 bucketdrop; + __u32 queuedrop; + __u32 childdrop; /* drops in child qdisc */ + __u32 marked; + __u32 maxqlen; + __u32 maxprob; + __u32 avgprob; +}; + +#define SFB_MAX_PROB 0xFFFF + #endif -- cgit v1.2.3 From ecc1058aecd986b9f00ba0b4b6ff3681dfb3ab47 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Wed, 23 Feb 2011 14:12:25 -0800 Subject: Revert "staging: iio: ak8975: add platform data." This reverts commit f2f1794835f1d8900d2b15d114c54e70c849809b. It should not be putting code into the include/input/ directory, and lots of other people have complained about it. Cc: Tony SIM Cc: Andrew Chew Cc: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman --- include/linux/input/ak8975.h | 20 -------------------- 1 file changed, 20 deletions(-) delete mode 100644 include/linux/input/ak8975.h (limited to 'include/linux') diff --git a/include/linux/input/ak8975.h b/include/linux/input/ak8975.h deleted file mode 100644 index 25d41eb10c3e..000000000000 --- a/include/linux/input/ak8975.h +++ /dev/null @@ -1,20 +0,0 @@ -/* - * ak8975 platform support - * - * Copyright (C) 2010 Renesas Solutions Corp. - * - * Author: Tony SIM - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -#ifndef _AK8975_H -#define _AK8975_H - -struct ak8975_platform_data { - int gpio; -}; - -#endif -- cgit v1.2.3 From 39fc0ce5710c53bad14aaba1a789eec810c556f9 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Micha=C5=82=20Miros=C5=82aw?= Date: Tue, 22 Feb 2011 16:52:29 +0000 Subject: net: Implement SFEATURES compatibility for not updated drivers MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Use discrete setting ops for not updated drivers. This will not make them conform to full G/SFEATURES semantics, though. Signed-off-by: Michał Mirosław Signed-off-by: David S. Miller --- include/linux/ethtool.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h index 54d776c2c1b5..aac3e2eeb4fd 100644 --- a/include/linux/ethtool.h +++ b/include/linux/ethtool.h @@ -591,6 +591,9 @@ struct ethtool_sfeatures { * Probably there are other device-specific constraints on some features * in the set. When %ETHTOOL_F_UNSUPPORTED is set, .valid is considered * here as though ignored bits were cleared. + * %ETHTOOL_F_COMPAT - some or all changes requested were made by calling + * compatibility functions. Requested offload state cannot be properly + * managed by kernel. * * Meaning of bits in the masks are obtained by %ETHTOOL_GSSET_INFO (number of * bits in the arrays - always multiple of 32) and %ETHTOOL_GSTRINGS commands @@ -600,10 +603,12 @@ struct ethtool_sfeatures { enum ethtool_sfeatures_retval_bits { ETHTOOL_F_UNSUPPORTED__BIT, ETHTOOL_F_WISH__BIT, + ETHTOOL_F_COMPAT__BIT, }; #define ETHTOOL_F_UNSUPPORTED (1 << ETHTOOL_F_UNSUPPORTED__BIT) #define ETHTOOL_F_WISH (1 << ETHTOOL_F_WISH__BIT) +#define ETHTOOL_F_COMPAT (1 << ETHTOOL_F_COMPAT__BIT) #ifdef __KERNEL__ -- cgit v1.2.3 From 5413b4c6c07b659e52c84a4e40d897b32b89834f Mon Sep 17 00:00:00 2001 From: Allan Stephens Date: Tue, 18 Jan 2011 13:24:55 -0500 Subject: tipc: Improve handling of invalid link tolerance values Enhances TIPC link code to ignore an invalid link tolerance value contained in an incoming LINK_PROTOCOL message, rather than processing the value and potentially causing a divide-by-zero error. Also add a compile-time check that catches attempts to redefine TIPC's minimum link tolerance value in a manner that might result in the same divide-by-zero error at run-time. Signed-off-by: Allan Stephens Signed-off-by: Paul Gortmaker --- include/linux/tipc_config.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/tipc_config.h b/include/linux/tipc_config.h index 7d42460a5e3c..c14102dee22e 100644 --- a/include/linux/tipc_config.h +++ b/include/linux/tipc_config.h @@ -193,6 +193,10 @@ #define TIPC_DEF_LINK_TOL 1500 #define TIPC_MAX_LINK_TOL 30000 +#if (TIPC_MIN_LINK_TOL < 16) +#error "TIPC_MIN_LINK_TOL is too small (abort limit may be NaN)" +#endif + /* * Link window limits (min, default, max), in packets */ -- cgit v1.2.3 From 77c81e0bb8af3f1a0e5d84dd0346fe57dfe3da27 Mon Sep 17 00:00:00 2001 From: Allan Stephens Date: Tue, 18 Jan 2011 13:37:09 -0500 Subject: tipc: Clean out all remaining instances of #if 0'd unused code Remove all instances of legacy or proposed-but-not-implemented code that lives within an #if 0 ... #endif block. If some of it is needed in the future it can recovered out of history, but there is no need for it to clutter up the active code base. Signed-off-by: Allan Stephens Signed-off-by: Paul Gortmaker --- include/linux/tipc.h | 8 +------- include/linux/tipc_config.h | 28 +--------------------------- 2 files changed, 2 insertions(+), 34 deletions(-) (limited to 'include/linux') diff --git a/include/linux/tipc.h b/include/linux/tipc.h index 1eefa3f6d1f4..a5b994a204d2 100644 --- a/include/linux/tipc.h +++ b/include/linux/tipc.h @@ -2,7 +2,7 @@ * include/linux/tipc.h: Include file for TIPC socket interface * * Copyright (c) 2003-2006, Ericsson AB - * Copyright (c) 2005, Wind River Systems + * Copyright (c) 2005, 2010-2011, Wind River Systems * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -130,12 +130,6 @@ static inline unsigned int tipc_node(__u32 addr) #define TIPC_SUB_PORTS 0x01 /* filter for port availability */ #define TIPC_SUB_SERVICE 0x02 /* filter for service availability */ #define TIPC_SUB_CANCEL 0x04 /* cancel a subscription */ -#if 0 -/* The following filter options are not currently implemented */ -#define TIPC_SUB_NO_BIND_EVTS 0x04 /* filter out "publish" events */ -#define TIPC_SUB_NO_UNBIND_EVTS 0x08 /* filter out "withdraw" events */ -#define TIPC_SUB_SINGLE_EVT 0x10 /* expire after first event */ -#endif #define TIPC_WAIT_FOREVER (~0) /* timeout for permanent subscription */ diff --git a/include/linux/tipc_config.h b/include/linux/tipc_config.h index c14102dee22e..011556fcef04 100644 --- a/include/linux/tipc_config.h +++ b/include/linux/tipc_config.h @@ -2,7 +2,7 @@ * include/linux/tipc_config.h: Include file for TIPC configuration interface * * Copyright (c) 2003-2006, Ericsson AB - * Copyright (c) 2005-2007, Wind River Systems + * Copyright (c) 2005-2007, 2010-2011, Wind River Systems * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -76,13 +76,6 @@ #define TIPC_CMD_SHOW_LINK_STATS 0x000B /* tx link_name, rx ultra_string */ #define TIPC_CMD_SHOW_STATS 0x000F /* tx unsigned, rx ultra_string */ -#if 0 -#define TIPC_CMD_SHOW_PORT_STATS 0x0008 /* tx port_ref, rx ultra_string */ -#define TIPC_CMD_RESET_PORT_STATS 0x0009 /* tx port_ref, rx none */ -#define TIPC_CMD_GET_ROUTES 0x000A /* tx ?, rx ? */ -#define TIPC_CMD_GET_LINK_PEER 0x000D /* tx link_name, rx ? */ -#endif - /* * Protected commands: * May only be issued by "network administration capable" process. @@ -109,13 +102,6 @@ #define TIPC_CMD_DUMP_LOG 0x410B /* tx none, rx ultra_string */ #define TIPC_CMD_RESET_LINK_STATS 0x410C /* tx link_name, rx none */ -#if 0 -#define TIPC_CMD_CREATE_LINK 0x4103 /* tx link_create, rx none */ -#define TIPC_CMD_REMOVE_LINK 0x4104 /* tx link_name, rx none */ -#define TIPC_CMD_BLOCK_LINK 0x4105 /* tx link_name, rx none */ -#define TIPC_CMD_UNBLOCK_LINK 0x4106 /* tx link_name, rx none */ -#endif - /* * Private commands: * May only be issued by "network administration capable" process. @@ -123,9 +109,6 @@ */ #define TIPC_CMD_SET_NODE_ADDR 0x8001 /* tx net_addr, rx none */ -#if 0 -#define TIPC_CMD_SET_ZONE_MASTER 0x8002 /* tx none, rx none */ -#endif #define TIPC_CMD_SET_REMOTE_MNG 0x8003 /* tx unsigned, rx none */ #define TIPC_CMD_SET_MAX_PORTS 0x8004 /* tx unsigned, rx none */ #define TIPC_CMD_SET_MAX_PUBL 0x8005 /* tx unsigned, rx none */ @@ -251,15 +234,6 @@ struct tipc_name_table_query { #define TIPC_CFG_NOT_SUPPORTED "\x84" /* request is not supported by TIPC */ #define TIPC_CFG_INVALID_VALUE "\x85" /* request has invalid argument value */ -#if 0 -/* prototypes TLV structures for proposed commands */ -struct tipc_link_create { - __u32 domain; - struct tipc_media_addr peer_addr; - char bearer_name[TIPC_MAX_BEARER_NAME]; -}; -#endif - /* * A TLV consists of a descriptor, followed by the TLV value. * TLV descriptor fields are stored in network byte order; -- cgit v1.2.3 From 2aa15890f3c191326678f1bd68af61ec6b8753ec Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Wed, 23 Feb 2011 13:49:47 +0100 Subject: mm: prevent concurrent unmap_mapping_range() on the same inode Michael Leun reported that running parallel opens on a fuse filesystem can trigger a "kernel BUG at mm/truncate.c:475" Gurudas Pai reported the same bug on NFS. The reason is, unmap_mapping_range() is not prepared for more than one concurrent invocation per inode. For example: thread1: going through a big range, stops in the middle of a vma and stores the restart address in vm_truncate_count. thread2: comes in with a small (e.g. single page) unmap request on the same vma, somewhere before restart_address, finds that the vma was already unmapped up to the restart address and happily returns without doing anything. Another scenario would be two big unmap requests, both having to restart the unmapping and each one setting vm_truncate_count to its own value. This could go on forever without any of them being able to finish. Truncate and hole punching already serialize with i_mutex. Other callers of unmap_mapping_range() do not, and it's difficult to get i_mutex protection for all callers. In particular ->d_revalidate(), which calls invalidate_inode_pages2_range() in fuse, may be called with or without i_mutex. This patch adds a new mutex to 'struct address_space' to prevent running multiple concurrent unmap_mapping_range() on the same mapping. [ We'll hopefully get rid of all this with the upcoming mm preemptibility series by Peter Zijlstra, the "mm: Remove i_mmap_mutex lockbreak" patch in particular. But that is for 2.6.39 ] Signed-off-by: Miklos Szeredi Reported-by: Michael Leun Reported-by: Gurudas Pai Tested-by: Gurudas Pai Acked-by: Hugh Dickins Cc: stable@kernel.org Signed-off-by: Linus Torvalds --- include/linux/fs.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index bd3215940c37..97d08d8a7de8 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -649,6 +649,7 @@ struct address_space { spinlock_t private_lock; /* for use by the address_space */ struct list_head private_list; /* ditto */ struct address_space *assoc_mapping; /* ditto */ + struct mutex unmap_mutex; /* to protect unmapping */ } __attribute__((aligned(sizeof(long)))); /* * On most architectures that alignment is already the case; but @@ -2225,6 +2226,7 @@ extern loff_t vfs_llseek(struct file *file, loff_t offset, int origin); extern int inode_init_always(struct super_block *, struct inode *); extern void inode_init_once(struct inode *); +extern void address_space_init_once(struct address_space *mapping); extern void ihold(struct inode * inode); extern void iput(struct inode *); extern struct inode * igrab(struct inode *); -- cgit v1.2.3 From adf779c1ee1d5556ebd83e39a7189022d4ebce3a Mon Sep 17 00:00:00 2001 From: Heungjun Kim Date: Wed, 23 Feb 2011 21:40:11 -0800 Subject: Input: mcs_touchkey - add support for suspend/resume This adds support for system-level suspend/resume to the driver. Signed-off-by: Heungjun Kim Signed-off-by: Kyungmin Park Signed-off-by: Dmitry Torokhov --- include/linux/i2c/mcs.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/i2c/mcs.h b/include/linux/i2c/mcs.h index 725ae7c313ff..61bb18a4fd3c 100644 --- a/include/linux/i2c/mcs.h +++ b/include/linux/i2c/mcs.h @@ -18,6 +18,7 @@ #define MCS_KEY_CODE(v) ((v) & 0xffff) struct mcs_platform_data { + void (*poweron)(bool); void (*cfg_pin)(void); /* touchscreen */ -- cgit v1.2.3 From 93b270f76e7ef3b81001576860c2701931cdc78b Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Thu, 24 Feb 2011 17:25:47 +1100 Subject: Fix over-zealous flush_disk when changing device size. There are two cases when we call flush_disk. In one, the device has disappeared (check_disk_change) so any data will hold becomes irrelevant. In the oter, the device has changed size (check_disk_size_change) so data we hold may be irrelevant. In both cases it makes sense to discard any 'clean' buffers, so they will be read back from the device if needed. In the former case it makes sense to discard 'dirty' buffers as there will never be anywhere safe to write the data. In the second case it *does*not* make sense to discard dirty buffers as that will lead to file system corruption when you simply enlarge the containing devices. flush_disk calls __invalidate_devices. __invalidate_device calls both invalidate_inodes and invalidate_bdev. invalidate_inodes *does* discard I_DIRTY inodes and this does lead to fs corruption. invalidate_bev *does*not* discard dirty pages, but I don't really care about that at present. So this patch adds a flag to __invalidate_device (calling it __invalidate_device2) to indicate whether dirty buffers should be killed, and this is passed to invalidate_inodes which can choose to skip dirty inodes. flusk_disk then passes true from check_disk_change and false from check_disk_size_change. dm avoids tripping over this problem by calling i_size_write directly rathher than using check_disk_size_change. md does use check_disk_size_change and so is affected. This regression was introduced by commit 608aeef17a which causes check_disk_size_change to call flush_disk, so it is suitable for any kernel since 2.6.27. Cc: stable@kernel.org Acked-by: Jeff Moyer Cc: Andrew Patterson Cc: Jens Axboe Signed-off-by: NeilBrown --- include/linux/fs.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index 32b38cd829d3..683f4c566c82 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2139,7 +2139,7 @@ extern void check_disk_size_change(struct gendisk *disk, struct block_device *bdev); extern int revalidate_disk(struct gendisk *); extern int check_disk_change(struct block_device *); -extern int __invalidate_device(struct block_device *); +extern int __invalidate_device(struct block_device *, bool); extern int invalidate_partition(struct gendisk *, int); #endif unsigned long invalidate_mapping_pages(struct address_space *mapping, -- cgit v1.2.3 From 8bc1f91e1f0e977fb95b11d8fa686f5091888110 Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Thu, 24 Feb 2011 14:43:06 +0100 Subject: bootmem: Move __alloc_memory_core_early() to nobootmem.c Now that bootmem.c and nobootmem.c are separate, there's no reason to define __alloc_memory_core_early(), which is used only by nobootmem, inside #ifdef in page_alloc.c. Move it to nobootmem.c and make it static. This patch doesn't introduce any behavior change. -tj: Updated commit description. Signed-off-by: Yinghai Lu Acked-by: Andrew Morton Signed-off-by: Tejun Heo --- include/linux/mm.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index f6385fc17ad4..679300c050f5 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1309,8 +1309,6 @@ int add_from_early_node_map(struct range *range, int az, int nr_range, int nid); u64 __init find_memory_core_early(int nid, u64 size, u64 align, u64 goal, u64 limit); -void *__alloc_memory_core_early(int nodeid, u64 size, u64 align, - u64 goal, u64 limit); typedef int (*work_fn_t)(unsigned long, unsigned long, void *); extern void work_with_active_regions(int nid, work_fn_t work_fn, void *data); extern void sparse_memory_present_with_active_regions(int nid); -- cgit v1.2.3 From 8a4a0f3ad071e258a9637c5491c34005a9a97903 Mon Sep 17 00:00:00 2001 From: Eddie Wai Date: Wed, 16 Feb 2011 15:04:28 -0600 Subject: [SCSI] bnx2i: Added support for the 57712(E) devices Moved all PCI_DEVICE_ID_NX2_57712(E) definitions to pci_ids.h Signed-off-by: Eddie Wai Acked-by: Michael Chan Acked-by: Eilon Greenstein Signed-off-by: Mike Christie Signed-off-by: James Bottomley --- include/linux/pci_ids.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h index 3adb06ebf841..f82986b4f44a 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -2078,6 +2078,8 @@ #define PCI_DEVICE_ID_TIGON3_5723 0x165b #define PCI_DEVICE_ID_TIGON3_5705M 0x165d #define PCI_DEVICE_ID_TIGON3_5705M_2 0x165e +#define PCI_DEVICE_ID_NX2_57712 0x1662 +#define PCI_DEVICE_ID_NX2_57712E 0x1663 #define PCI_DEVICE_ID_TIGON3_5714 0x1668 #define PCI_DEVICE_ID_TIGON3_5714S 0x1669 #define PCI_DEVICE_ID_TIGON3_5780 0x166a -- cgit v1.2.3 From 805bdaec1a44155db35f6ee5410d6bbc365324a8 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Thu, 24 Feb 2011 11:10:01 +0100 Subject: PM: Make ACPI wakeup from S5 work again when CONFIG_PM_SLEEP is unset Commit 074037e (PM / Wakeup: Introduce wakeup source objects and event statistics (v3)) caused ACPI wakeup to only work if CONFIG_PM_SLEEP is set, but it also worked for CONFIG_PM_SLEEP unset before. This can be fixed by making device_set_wakeup_enable(), device_init_wakeup() and device_may_wakeup() work in the same way as before commit 074037e when CONFIG_PM_SLEEP is unset. Reported-and-tested-by: Justin Maggard Cc: stable@kernel.org Signed-off-by: Rafael J. Wysocki --- include/linux/pm.h | 2 ++ include/linux/pm_wakeup.h | 25 ++++++++++++++----------- 2 files changed, 16 insertions(+), 11 deletions(-) (limited to 'include/linux') diff --git a/include/linux/pm.h b/include/linux/pm.h index dd9c7ab38270..21415cc91cbb 100644 --- a/include/linux/pm.h +++ b/include/linux/pm.h @@ -431,6 +431,8 @@ struct dev_pm_info { struct list_head entry; struct completion completion; struct wakeup_source *wakeup; +#else + unsigned int should_wakeup:1; #endif #ifdef CONFIG_PM_RUNTIME struct timer_list suspend_timer; diff --git a/include/linux/pm_wakeup.h b/include/linux/pm_wakeup.h index 9cff00dd6b63..03a67db03d01 100644 --- a/include/linux/pm_wakeup.h +++ b/include/linux/pm_wakeup.h @@ -109,11 +109,6 @@ static inline bool device_can_wakeup(struct device *dev) return dev->power.can_wakeup; } -static inline bool device_may_wakeup(struct device *dev) -{ - return false; -} - static inline struct wakeup_source *wakeup_source_create(const char *name) { return NULL; @@ -134,24 +129,32 @@ static inline void wakeup_source_unregister(struct wakeup_source *ws) {} static inline int device_wakeup_enable(struct device *dev) { - return -EINVAL; + dev->power.should_wakeup = true; + return 0; } static inline int device_wakeup_disable(struct device *dev) { + dev->power.should_wakeup = false; return 0; } -static inline int device_init_wakeup(struct device *dev, bool val) +static inline int device_set_wakeup_enable(struct device *dev, bool enable) { - dev->power.can_wakeup = val; - return val ? -EINVAL : 0; + dev->power.should_wakeup = enable; + return 0; } +static inline int device_init_wakeup(struct device *dev, bool val) +{ + device_set_wakeup_capable(dev, val); + device_set_wakeup_enable(dev, val); + return 0; +} -static inline int device_set_wakeup_enable(struct device *dev, bool enable) +static inline bool device_may_wakeup(struct device *dev) { - return -EINVAL; + return dev->power.can_wakeup && dev->power.should_wakeup; } static inline void __pm_stay_awake(struct wakeup_source *ws) {} -- cgit v1.2.3 From 073b4964b3b75fd9e19bf3933b26d9c23591c9db Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 8 Feb 2011 23:37:31 +0100 Subject: ACPI: Do not export functions that are only used in osl.c The functions acpi_os_map_generic_address() and acpi_os_unmap_generic_address() are only used in drivers/acpi/osl.c, so make them static and remove the extern definitions of them from include/linux/acpi_io.h. Signed-off-by: Rafael J. Wysocki --- include/linux/acpi_io.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/acpi_io.h b/include/linux/acpi_io.h index 7180013a4a3a..28a3ae279d7a 100644 --- a/include/linux/acpi_io.h +++ b/include/linux/acpi_io.h @@ -10,7 +10,4 @@ static inline void __iomem *acpi_os_ioremap(acpi_physical_address phys, return ioremap_cache(phys, size); } -int acpi_os_map_generic_address(struct acpi_generic_address *addr); -void acpi_os_unmap_generic_address(struct acpi_generic_address *addr); - #endif -- cgit v1.2.3 From 13606a2de1996f8d83a9ce296f74022bdbadf712 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 8 Feb 2011 23:38:25 +0100 Subject: ACPI: Introduce acpi_os_get_iomem() Introduce function acpi_os_get_iomem() that may be used by its callers to get a reference to an ACPI iomap. Signed-off-by: Rafael J. Wysocki --- include/linux/acpi_io.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/acpi_io.h b/include/linux/acpi_io.h index 28a3ae279d7a..4afd7102459d 100644 --- a/include/linux/acpi_io.h +++ b/include/linux/acpi_io.h @@ -10,4 +10,6 @@ static inline void __iomem *acpi_os_ioremap(acpi_physical_address phys, return ioremap_cache(phys, size); } +void __iomem *acpi_os_get_iomem(acpi_physical_address phys, unsigned int size); + #endif -- cgit v1.2.3 From df173bda2639ac744ccf596ec1f8f7e66fe4c343 Mon Sep 17 00:00:00 2001 From: stephen hemminger Date: Wed, 23 Feb 2011 13:04:19 +0000 Subject: netem: define NETEM_DIST_MAX Rather than magic constant in code, expose the maximum size of packet distribution table in API. In iproute2, q_netem defines MAX_DIST as 16K already. Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller --- include/linux/pkt_sched.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/pkt_sched.h b/include/linux/pkt_sched.h index 5afee2b238bd..891382268fe1 100644 --- a/include/linux/pkt_sched.h +++ b/include/linux/pkt_sched.h @@ -495,6 +495,7 @@ struct tc_netem_corrupt { }; #define NETEM_DIST_SCALE 8192 +#define NETEM_DIST_MAX 16384 /* DRR */ -- cgit v1.2.3 From 661b79725fea030803a89a16cda506bac8eeca78 Mon Sep 17 00:00:00 2001 From: stephen hemminger Date: Wed, 23 Feb 2011 13:04:21 +0000 Subject: netem: revised correlated loss generator This is a patch originated with Stefano Salsano and Fabio Ludovici. It provides several alternative loss models for use with netem. This patch adds two state machine based loss models. See: http://netgroup.uniroma2.it/twiki/bin/view.cgi/Main/NetemCLG Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller --- include/linux/pkt_sched.h | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pkt_sched.h b/include/linux/pkt_sched.h index 891382268fe1..b1032a3fafdc 100644 --- a/include/linux/pkt_sched.h +++ b/include/linux/pkt_sched.h @@ -464,6 +464,7 @@ enum { TCA_NETEM_DELAY_DIST, TCA_NETEM_REORDER, TCA_NETEM_CORRUPT, + TCA_NETEM_LOSS, __TCA_NETEM_MAX, }; @@ -494,6 +495,31 @@ struct tc_netem_corrupt { __u32 correlation; }; +enum { + NETEM_LOSS_UNSPEC, + NETEM_LOSS_GI, /* General Intuitive - 4 state model */ + NETEM_LOSS_GE, /* Gilbert Elliot models */ + __NETEM_LOSS_MAX +}; +#define NETEM_LOSS_MAX (__NETEM_LOSS_MAX - 1) + +/* State transition probablities for 4 state model */ +struct tc_netem_gimodel { + __u32 p13; + __u32 p31; + __u32 p32; + __u32 p14; + __u32 p23; +}; + +/* Gilbert-Elliot models */ +struct tc_netem_gemodel { + __u32 p; + __u32 r; + __u32 h; + __u32 k1; +}; + #define NETEM_DIST_SCALE 8192 #define NETEM_DIST_MAX 16384 -- cgit v1.2.3 From b5faba21a6805c33b40e258d36f57997ee1de131 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Wed, 23 Feb 2011 23:52:13 +0000 Subject: genirq: Prepare the handling of shared oneshot interrupts For level type interrupts we need to track how many threads are on flight to avoid useless interrupt storms when not all thread handlers have finished yet. Keep track of the woken threads and only unmask when there are no more threads in flight. Yes, I'm lazy and using a bitfield. But not only because I'm lazy, the main reason is that it's way simpler than using a refcount. A refcount based solution would need to keep track of various things like crashing the irq thread, spurious interrupts coming in, disables/enables, free_irq() and some more. The bitfield keeps the tracking simple and makes things just work. It's also nicely confined to the thread code pathes and does not require additional checks all over the place. Signed-off-by: Thomas Gleixner Cc: Peter Zijlstra LKML-Reference: <20110223234956.388095876@linutronix.de> --- include/linux/interrupt.h | 2 ++ include/linux/irqdesc.h | 2 ++ 2 files changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h index 8da6643e39a6..e116fef274cd 100644 --- a/include/linux/interrupt.h +++ b/include/linux/interrupt.h @@ -99,6 +99,7 @@ typedef irqreturn_t (*irq_handler_t)(int, void *); * @thread_fn: interupt handler function for threaded interrupts * @thread: thread pointer for threaded interrupts * @thread_flags: flags related to @thread + * @thread_mask: bitmask for keeping track of @thread activity */ struct irqaction { irq_handler_t handler; @@ -109,6 +110,7 @@ struct irqaction { irq_handler_t thread_fn; struct task_struct *thread; unsigned long thread_flags; + unsigned long thread_mask; const char *name; struct proc_dir_entry *dir; } ____cacheline_internodealigned_in_smp; diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h index 2f87d6441302..9eb9cd313052 100644 --- a/include/linux/irqdesc.h +++ b/include/linux/irqdesc.h @@ -28,6 +28,7 @@ struct timer_rand_state; * @lock: locking for SMP * @affinity_notify: context for notification of affinity changes * @pending_mask: pending rebalanced interrupts + * @threads_oneshot: bitfield to handle shared oneshot threads * @threads_active: number of irqaction threads currently running * @wait_for_threads: wait queue for sync_irq to wait for threaded handlers * @dir: /proc/irq/ procfs entry @@ -86,6 +87,7 @@ struct irq_desc { cpumask_var_t pending_mask; #endif #endif + unsigned long threads_oneshot; atomic_t threads_active; wait_queue_head_t wait_for_threads; #ifdef CONFIG_PROC_FS -- cgit v1.2.3 From 0c4602ff88d6d6ef0ee6d228ee9acaa6448ff6f5 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Wed, 23 Feb 2011 23:52:18 +0000 Subject: genirq: Add IRQF_NO_THREAD Some low level interrupts cannot be threaded even when we force thread all interrupt handlers. Add a flag to annotate such interrupts. Add all timer interrupts to this category by default. Signed-off-by: Thomas Gleixner Cc: Peter Zijlstra LKML-Reference: <20110223234956.578893460@linutronix.de> --- include/linux/interrupt.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h index e116fef274cd..0fc3eb9397b4 100644 --- a/include/linux/interrupt.h +++ b/include/linux/interrupt.h @@ -58,6 +58,7 @@ * irq line disabled until the threaded handler has been run. * IRQF_NO_SUSPEND - Do not disable this IRQ during suspend * IRQF_FORCE_RESUME - Force enable it on resume even if IRQF_NO_SUSPEND is set + * IRQF_NO_THREAD - Interrupt cannot be threaded */ #define IRQF_DISABLED 0x00000020 #define IRQF_SAMPLE_RANDOM 0x00000040 @@ -70,8 +71,9 @@ #define IRQF_ONESHOT 0x00002000 #define IRQF_NO_SUSPEND 0x00004000 #define IRQF_FORCE_RESUME 0x00008000 +#define IRQF_NO_THREAD 0x00010000 -#define IRQF_TIMER (__IRQF_TIMER | IRQF_NO_SUSPEND) +#define IRQF_TIMER (__IRQF_TIMER | IRQF_NO_SUSPEND | IRQF_NO_THREAD) /* * These values can be returned by request_any_context_irq() and -- cgit v1.2.3 From 969e3033ae7733a0af8f7742ca74cd16c0857e71 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Wed, 23 Feb 2011 15:28:18 -0500 Subject: USB: serial drivers need to use larger bulk-in buffers When a driver doesn't know how much data a device is going to send, the buffer size should be at least as big as the endpoint's maxpacket value. The serial drivers don't follow this rule; many of them request only 256-byte bulk-in buffers. As a result, they suffer overflow errors if a high-speed device wants to send a lot of data, because high-speed bulk endpoints are required to have a maxpacket size of 512. This patch (as1450) fixes the problem by using the driver's bulk_in_size value as a minimum, always allocating buffers no smaller than the endpoint's maxpacket size. Signed-off-by: Alan Stern Tested-by: Flynn Marquardt CC: [after .39-rc1 is out] Signed-off-by: Greg Kroah-Hartman --- include/linux/usb/serial.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/usb/serial.h b/include/linux/usb/serial.h index c9049139a7a5..45f3b9db4258 100644 --- a/include/linux/usb/serial.h +++ b/include/linux/usb/serial.h @@ -191,7 +191,8 @@ static inline void usb_set_serial_data(struct usb_serial *serial, void *data) * @id_table: pointer to a list of usb_device_id structures that define all * of the devices this structure can support. * @num_ports: the number of different ports this device will have. - * @bulk_in_size: bytes to allocate for bulk-in buffer (0 = end-point size) + * @bulk_in_size: minimum number of bytes to allocate for bulk-in buffer + * (0 = end-point size) * @bulk_out_size: bytes to allocate for bulk-out buffer (0 = end-point size) * @calc_num_ports: pointer to a function to determine how many ports this * device has dynamically. It will be called after the probe() -- cgit v1.2.3 From c9642374d0e969e8c17f4f31cd1a2bd111634227 Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Wed, 23 Feb 2011 14:38:20 -0800 Subject: USB: fix unsafe USB_SS_MAX_STREAMS() definition Macro arguments used in expressions need to be enclosed in parenthesis to avoid unpleasant surprises. Signed-off-by: Dmitry Torokhov Signed-off-by: Greg Kroah-Hartman --- include/linux/usb/ch9.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/usb/ch9.h b/include/linux/usb/ch9.h index ab461948b579..34316ba05f29 100644 --- a/include/linux/usb/ch9.h +++ b/include/linux/usb/ch9.h @@ -584,7 +584,7 @@ struct usb_ss_ep_comp_descriptor { #define USB_DT_SS_EP_COMP_SIZE 6 /* Bits 4:0 of bmAttributes if this is a bulk endpoint */ -#define USB_SS_MAX_STREAMS(p) (1 << (p & 0x1f)) +#define USB_SS_MAX_STREAMS(p) (1 << ((p) & 0x1f)) /*-------------------------------------------------------------------------*/ -- cgit v1.2.3 From 93c890dbe5287d146007083021148e7318058e37 Mon Sep 17 00:00:00 2001 From: Mike Waychison Date: Tue, 22 Feb 2011 17:53:15 -0800 Subject: firmware: Add DMI entry types to the headers In preparation for the upcoming commits, introduce the DMI entry types to the headers. These type names are based on those specified in the DMTF SMBIOS specification version 2.7.1. Signed-off-by: Mike Waychison Signed-off-by: Greg Kroah-Hartman --- include/linux/dmi.h | 47 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) (limited to 'include/linux') diff --git a/include/linux/dmi.h b/include/linux/dmi.h index 90e087f8d951..f156cca25ad0 100644 --- a/include/linux/dmi.h +++ b/include/linux/dmi.h @@ -23,6 +23,53 @@ enum dmi_device_type { DMI_DEV_TYPE_DEV_ONBOARD = -3, }; +enum dmi_entry_type { + DMI_ENTRY_BIOS = 0, + DMI_ENTRY_SYSTEM, + DMI_ENTRY_BASEBOARD, + DMI_ENTRY_CHASSIS, + DMI_ENTRY_PROCESSOR, + DMI_ENTRY_MEM_CONTROLLER, + DMI_ENTRY_MEM_MODULE, + DMI_ENTRY_CACHE, + DMI_ENTRY_PORT_CONNECTOR, + DMI_ENTRY_SYSTEM_SLOT, + DMI_ENTRY_ONBOARD_DEVICE, + DMI_ENTRY_OEMSTRINGS, + DMI_ENTRY_SYSCONF, + DMI_ENTRY_BIOS_LANG, + DMI_ENTRY_GROUP_ASSOC, + DMI_ENTRY_SYSTEM_EVENT_LOG, + DMI_ENTRY_PHYS_MEM_ARRAY, + DMI_ENTRY_MEM_DEVICE, + DMI_ENTRY_32_MEM_ERROR, + DMI_ENTRY_MEM_ARRAY_MAPPED_ADDR, + DMI_ENTRY_MEM_DEV_MAPPED_ADDR, + DMI_ENTRY_BUILTIN_POINTING_DEV, + DMI_ENTRY_PORTABLE_BATTERY, + DMI_ENTRY_SYSTEM_RESET, + DMI_ENTRY_HW_SECURITY, + DMI_ENTRY_SYSTEM_POWER_CONTROLS, + DMI_ENTRY_VOLTAGE_PROBE, + DMI_ENTRY_COOLING_DEV, + DMI_ENTRY_TEMP_PROBE, + DMI_ENTRY_ELECTRICAL_CURRENT_PROBE, + DMI_ENTRY_OOB_REMOTE_ACCESS, + DMI_ENTRY_BIS_ENTRY, + DMI_ENTRY_SYSTEM_BOOT, + DMI_ENTRY_MGMT_DEV, + DMI_ENTRY_MGMT_DEV_COMPONENT, + DMI_ENTRY_MGMT_DEV_THRES, + DMI_ENTRY_MEM_CHANNEL, + DMI_ENTRY_IPMI_DEV, + DMI_ENTRY_SYS_POWER_SUPPLY, + DMI_ENTRY_ADDITIONAL, + DMI_ENTRY_ONBOARD_DEV_EXT, + DMI_ENTRY_MGMT_CONTROLLER_HOST, + DMI_ENTRY_INACTIVE = 126, + DMI_ENTRY_END_OF_TABLE = 127, +}; + struct dmi_header { u8 type; u8 length; -- cgit v1.2.3 From fe41947e1aa12e96a50edaee123b4e4de03b668b Mon Sep 17 00:00:00 2001 From: Alexandre Bounine Date: Fri, 25 Feb 2011 14:44:31 -0800 Subject: rapidio: fix sysfs config attribute to access 16MB of maint space Fixes sysfs config attribute to allow access to entire 16MB maintenance space of RapidIO devices. Signed-off-by: Alexandre Bounine Cc: Kumar Gala Cc: Matt Porter Cc: Li Yang Cc: Thomas Moll Cc: Micha Nelissen Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/rio_regs.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/rio_regs.h b/include/linux/rio_regs.h index d63dcbaea169..9026b30238f3 100644 --- a/include/linux/rio_regs.h +++ b/include/linux/rio_regs.h @@ -14,10 +14,12 @@ #define LINUX_RIO_REGS_H /* - * In RapidIO, each device has a 2MB configuration space that is + * In RapidIO, each device has a 16MB configuration space that is * accessed via maintenance transactions. Portions of configuration * space are standardized and/or reserved. */ +#define RIO_MAINT_SPACE_SZ 0x1000000 /* 16MB of RapidIO mainenance space */ + #define RIO_DEV_ID_CAR 0x00 /* [I] Device Identity CAR */ #define RIO_DEV_INFO_CAR 0x04 /* [I] Device Information CAR */ #define RIO_ASM_ID_CAR 0x08 /* [I] Assembly Identity CAR */ -- cgit v1.2.3 From 8d32a307e4faa8b123dc8a9cd56d1a7525f69ad3 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Wed, 23 Feb 2011 23:52:23 +0000 Subject: genirq: Provide forced interrupt threading Add a commandline parameter "threadirqs" which forces all interrupts except those marked IRQF_NO_THREAD to run threaded. That's mostly a debug option to allow retrieving better debug data from crashing interrupt handlers. If "threadirqs" is not enabled on the kernel command line, then there is no impact in the interrupt hotpath. Architecture code needs to select CONFIG_IRQ_FORCED_THREADING after marking the interrupts which cant be threaded IRQF_NO_THREAD. All interrupts which have IRQF_TIMER set are implict marked IRQF_NO_THREAD. Also all PER_CPU interrupts are excluded. Forced threading hard interrupts also forces all soft interrupt handling into thread context. When enabled it might slow down things a bit, but for debugging problems in interrupt code it's a reasonable penalty as it does not immediately crash and burn the machine when an interrupt handler is buggy. Some test results on a Core2Duo machine: Cache cold run of: # time git grep irq_desc non-threaded threaded real 1m18.741s 1m19.061s user 0m1.874s 0m1.757s sys 0m5.843s 0m5.427s # iperf -c server non-threaded [ 3] 0.0-10.0 sec 1.09 GBytes 933 Mbits/sec [ 3] 0.0-10.0 sec 1.09 GBytes 934 Mbits/sec [ 3] 0.0-10.0 sec 1.09 GBytes 933 Mbits/sec threaded [ 3] 0.0-10.0 sec 1.09 GBytes 939 Mbits/sec [ 3] 0.0-10.0 sec 1.09 GBytes 934 Mbits/sec [ 3] 0.0-10.0 sec 1.09 GBytes 937 Mbits/sec Signed-off-by: Thomas Gleixner Cc: Peter Zijlstra LKML-Reference: <20110223234956.772668648@linutronix.de> --- include/linux/interrupt.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h index 0fc3eb9397b4..f8a8af108e0c 100644 --- a/include/linux/interrupt.h +++ b/include/linux/interrupt.h @@ -383,6 +383,13 @@ static inline int disable_irq_wake(unsigned int irq) } #endif /* CONFIG_GENERIC_HARDIRQS */ + +#ifdef CONFIG_IRQ_FORCED_THREADING +extern bool force_irqthreads; +#else +#define force_irqthreads (0) +#endif + #ifndef __ARCH_SET_SOFTIRQ_PENDING #define set_softirq_pending(x) (local_softirq_pending() = (x)) #define or_softirq_pending(x) (local_softirq_pending() |= (x)) -- cgit v1.2.3 From 080e4130b1fb6a02e75149a1cccc8192e734713d Mon Sep 17 00:00:00 2001 From: Amerigo Wang Date: Thu, 17 Feb 2011 23:43:33 +0000 Subject: netpoll: remove IFF_IN_NETPOLL flag V4: rebase to net-next-2.6 This patch removes the flag IFF_IN_NETPOLL, we don't need it any more since we have netpoll_tx_running() now. Signed-off-by: WANG Cong Acked-by: Neil Horman Cc: Herbert Xu Signed-off-by: David S. Miller --- include/linux/if.h | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/if.h b/include/linux/if.h index 123959927745..3bc63e6a02f7 100644 --- a/include/linux/if.h +++ b/include/linux/if.h @@ -71,11 +71,10 @@ * release skb->dst */ #define IFF_DONT_BRIDGE 0x800 /* disallow bridging this ether dev */ -#define IFF_IN_NETPOLL 0x1000 /* whether we are processing netpoll */ -#define IFF_DISABLE_NETPOLL 0x2000 /* disable netpoll at run-time */ -#define IFF_MACVLAN_PORT 0x4000 /* device used as macvlan port */ -#define IFF_BRIDGE_PORT 0x8000 /* device used as bridge port */ -#define IFF_OVS_DATAPATH 0x10000 /* device used as Open vSwitch +#define IFF_DISABLE_NETPOLL 0x1000 /* disable netpoll at run-time */ +#define IFF_MACVLAN_PORT 0x2000 /* device used as macvlan port */ +#define IFF_BRIDGE_PORT 0x4000 /* device used as bridge port */ +#define IFF_OVS_DATAPATH 0x8000 /* device used as Open vSwitch * datapath port */ #define IF_GET_IFACE 0x0001 /* for querying only */ -- cgit v1.2.3 From 3d6b88282751a3329d7b041a8d18db87641db9e8 Mon Sep 17 00:00:00 2001 From: Lennert Buytenhek Date: Tue, 22 Feb 2011 18:18:51 +0100 Subject: dt: Typo fix. Signed-off-by: Lennert Buytenhek Signed-off-by: Grant Likely --- include/linux/of.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/of.h b/include/linux/of.h index d9dd664a6a9c..c004753d4c1b 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -103,7 +103,7 @@ extern void of_node_put(struct device_node *node); #endif /* - * OF address retreival & translation + * OF address retrieval & translation */ /* Helper to read a big number; size is in cells (not bytes) */ -- cgit v1.2.3 From b826291c14c396e7aa5d84523aafac117f430902 Mon Sep 17 00:00:00 2001 From: Grant Likely Date: Thu, 17 Feb 2011 02:37:15 -0700 Subject: drivercore/dt: add a match table pointer to struct device Add a new .of_match field to struct device which points at the matching device driver .of_match_table entry when a device is probed via the device tree Signed-off-by: Grant Likely Acked-by: Greg Kroah-Hartman --- include/linux/device.h | 1 + include/linux/of_device.h | 5 +++-- 2 files changed, 4 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/device.h b/include/linux/device.h index ca5d25225aab..8d8e2675d07f 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -441,6 +441,7 @@ struct device { struct dev_archdata archdata; struct device_node *of_node; /* associated device tree node */ + const struct of_device_id *of_match; /* matching of_device_id from driver */ dev_t devt; /* dev_t, creates the sysfs "dev" */ diff --git a/include/linux/of_device.h b/include/linux/of_device.h index 975d347079d9..8bfe6c1d4365 100644 --- a/include/linux/of_device.h +++ b/include/linux/of_device.h @@ -18,10 +18,11 @@ extern void of_device_make_bus_id(struct device *dev); * @drv: the device_driver structure to test * @dev: the device structure to match against */ -static inline int of_driver_match_device(const struct device *dev, +static inline int of_driver_match_device(struct device *dev, const struct device_driver *drv) { - return of_match_device(drv->of_match_table, dev) != NULL; + dev->of_match = of_match_device(drv->of_match_table, dev); + return dev->of_match != NULL; } extern struct platform_device *of_dev_get(struct platform_device *dev); -- cgit v1.2.3 From 710ac54be44e0cc53f5bf29b03d12c8706e7077a Mon Sep 17 00:00:00 2001 From: Grant Likely Date: Thu, 17 Feb 2011 00:26:57 -0700 Subject: dt/powerpc: move of_bus_type infrastructure to ibmebus arch/powerpc/kernel/ibmebus.c is the only remaining user of the of_bus_type support code for initializing the bus and registering drivers. All others have either been switched to the vanilla platform bus or already have their own infrastructure. This patch moves the functionality that ibmebus is using out of drivers/of/{platform,device}.c and into ibmebus.c where it is actually used. Also renames the moved symbols from of_platform_* to ibmebus_bus_* to reflect the actual usage. This patch is part of moving all of the of_platform_bus_type users over to the platform_bus_type. Signed-off-by: Grant Likely --- include/linux/of_platform.h | 6 ------ 1 file changed, 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/of_platform.h b/include/linux/of_platform.h index a68716ad38ce..048949fa1d10 100644 --- a/include/linux/of_platform.h +++ b/include/linux/of_platform.h @@ -47,10 +47,6 @@ struct of_platform_driver #define to_of_platform_driver(drv) \ container_of(drv,struct of_platform_driver, driver) -extern int of_register_driver(struct of_platform_driver *drv, - struct bus_type *bus); -extern void of_unregister_driver(struct of_platform_driver *drv); - /* Platform drivers register/unregister */ extern int of_register_platform_driver(struct of_platform_driver *drv); extern void of_unregister_platform_driver(struct of_platform_driver *drv); @@ -60,8 +56,6 @@ extern struct platform_device *of_device_alloc(struct device_node *np, struct device *parent); extern struct platform_device *of_find_device_by_node(struct device_node *np); -extern int of_bus_type_init(struct bus_type *bus, const char *name); - #if !defined(CONFIG_SPARC) /* SPARC has its own device registration method */ /* Platform devices and busses creation */ extern struct platform_device *of_platform_device_create(struct device_node *np, -- cgit v1.2.3 From 7c3343392172ba98d9d90a83edcc4c2e80897009 Mon Sep 17 00:00:00 2001 From: Christoph Lameter Date: Mon, 28 Feb 2011 11:02:24 +0100 Subject: percpu: Generic support for this_cpu_cmpxchg_double() Introduce this_cpu_cmpxchg_double(). this_cpu_cmpxchg_double() allows the comparison between two consecutive words and replaces them if there is a match. bool this_cpu_cmpxchg_double(pcp1, pcp2, old_word1, old_word2, new_word1, new_word2) this_cpu_cmpxchg_double does not return the old value (difficult since there are two words) but a boolean indicating if the operation was successful. The first percpu variable must be double word aligned! -tj: Updated to return bool instead of int, converted size check to BUILD_BUG_ON() instead of VM_BUG_ON() and other cosmetic changes. Signed-off-by: Christoph Lameter Signed-off-by: Tejun Heo --- include/linux/percpu.h | 128 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 128 insertions(+) (limited to 'include/linux') diff --git a/include/linux/percpu.h b/include/linux/percpu.h index 27c3c6fcfad3..3a5c4449fd36 100644 --- a/include/linux/percpu.h +++ b/include/linux/percpu.h @@ -255,6 +255,30 @@ extern void __bad_size_call_parameter(void); pscr2_ret__; \ }) +/* + * Special handling for cmpxchg_double. cmpxchg_double is passed two + * percpu variables. The first has to be aligned to a double word + * boundary and the second has to follow directly thereafter. + */ +#define __pcpu_double_call_return_bool(stem, pcp1, pcp2, ...) \ +({ \ + bool pdcrb_ret__; \ + __verify_pcpu_ptr(&pcp1); \ + BUILD_BUG_ON(sizeof(pcp1) != sizeof(pcp2)); \ + VM_BUG_ON((unsigned long)(&pcp1) % (2 * sizeof(pcp1))); \ + VM_BUG_ON((unsigned long)(&pcp2) != \ + (unsigned long)(&pcp1) + sizeof(pcp1)); \ + switch(sizeof(pcp1)) { \ + case 1: pdcrb_ret__ = stem##1(pcp1, pcp2, __VA_ARGS__); break; \ + case 2: pdcrb_ret__ = stem##2(pcp1, pcp2, __VA_ARGS__); break; \ + case 4: pdcrb_ret__ = stem##4(pcp1, pcp2, __VA_ARGS__); break; \ + case 8: pdcrb_ret__ = stem##8(pcp1, pcp2, __VA_ARGS__); break; \ + default: \ + __bad_size_call_parameter(); break; \ + } \ + pdcrb_ret__; \ +}) + #define __pcpu_size_call(stem, variable, ...) \ do { \ __verify_pcpu_ptr(&(variable)); \ @@ -500,6 +524,45 @@ do { \ __pcpu_size_call_return2(this_cpu_cmpxchg_, pcp, oval, nval) #endif +/* + * cmpxchg_double replaces two adjacent scalars at once. The first + * two parameters are per cpu variables which have to be of the same + * size. A truth value is returned to indicate success or failure + * (since a double register result is difficult to handle). There is + * very limited hardware support for these operations, so only certain + * sizes may work. + */ +#define _this_cpu_generic_cmpxchg_double(pcp1, pcp2, oval1, oval2, nval1, nval2) \ +({ \ + int ret__; \ + preempt_disable(); \ + ret__ = __this_cpu_generic_cmpxchg_double(pcp1, pcp2, \ + oval1, oval2, nval1, nval2); \ + preempt_enable(); \ + ret__; \ +}) + +#ifndef this_cpu_cmpxchg_double +# ifndef this_cpu_cmpxchg_double_1 +# define this_cpu_cmpxchg_double_1(pcp1, pcp2, oval1, oval2, nval1, nval2) \ + _this_cpu_generic_cmpxchg_double(pcp1, pcp2, oval1, oval2, nval1, nval2) +# endif +# ifndef this_cpu_cmpxchg_double_2 +# define this_cpu_cmpxchg_double_2(pcp1, pcp2, oval1, oval2, nval1, nval2) \ + _this_cpu_generic_cmpxchg_double(pcp1, pcp2, oval1, oval2, nval1, nval2) +# endif +# ifndef this_cpu_cmpxchg_double_4 +# define this_cpu_cmpxchg_double_4(pcp1, pcp2, oval1, oval2, nval1, nval2) \ + _this_cpu_generic_cmpxchg_double(pcp1, pcp2, oval1, oval2, nval1, nval2) +# endif +# ifndef this_cpu_cmpxchg_double_8 +# define this_cpu_cmpxchg_double_8(pcp1, pcp2, oval1, oval2, nval1, nval2) \ + _this_cpu_generic_cmpxchg_double(pcp1, pcp2, oval1, oval2, nval1, nval2) +# endif +# define this_cpu_cmpxchg_double(pcp1, pcp2, oval1, oval2, nval1, nval2) \ + __pcpu_double_call_return_bool(this_cpu_cmpxchg_double_, (pcp1), (pcp2), (oval1), (oval2), (nval1), (nval2)) +#endif + /* * Generic percpu operations that do not require preemption handling. * Either we do not care about races or the caller has the @@ -703,6 +766,39 @@ do { \ __pcpu_size_call_return2(__this_cpu_cmpxchg_, pcp, oval, nval) #endif +#define __this_cpu_generic_cmpxchg_double(pcp1, pcp2, oval1, oval2, nval1, nval2) \ +({ \ + int __ret = 0; \ + if (__this_cpu_read(pcp1) == (oval1) && \ + __this_cpu_read(pcp2) == (oval2)) { \ + __this_cpu_write(pcp1, (nval1)); \ + __this_cpu_write(pcp2, (nval2)); \ + __ret = 1; \ + } \ + (__ret); \ +}) + +#ifndef __this_cpu_cmpxchg_double +# ifndef __this_cpu_cmpxchg_double_1 +# define __this_cpu_cmpxchg_double_1(pcp1, pcp2, oval1, oval2, nval1, nval2) \ + __this_cpu_generic_cmpxchg_double(pcp1, pcp2, oval1, oval2, nval1, nval2) +# endif +# ifndef __this_cpu_cmpxchg_double_2 +# define __this_cpu_cmpxchg_double_2(pcp1, pcp2, oval1, oval2, nval1, nval2) \ + __this_cpu_generic_cmpxchg_double(pcp1, pcp2, oval1, oval2, nval1, nval2) +# endif +# ifndef __this_cpu_cmpxchg_double_4 +# define __this_cpu_cmpxchg_double_4(pcp1, pcp2, oval1, oval2, nval1, nval2) \ + __this_cpu_generic_cmpxchg_double(pcp1, pcp2, oval1, oval2, nval1, nval2) +# endif +# ifndef __this_cpu_cmpxchg_double_8 +# define __this_cpu_cmpxchg_double_8(pcp1, pcp2, oval1, oval2, nval1, nval2) \ + __this_cpu_generic_cmpxchg_double(pcp1, pcp2, oval1, oval2, nval1, nval2) +# endif +# define __this_cpu_cmpxchg_double(pcp1, pcp2, oval1, oval2, nval1, nval2) \ + __pcpu_double_call_return_bool(__this_cpu_cmpxchg_double_, (pcp1), (pcp2), (oval1), (oval2), (nval1), (nval2)) +#endif + /* * IRQ safe versions of the per cpu RMW operations. Note that these operations * are *not* safe against modification of the same variable from another @@ -823,4 +919,36 @@ do { \ __pcpu_size_call_return2(irqsafe_cpu_cmpxchg_, (pcp), oval, nval) #endif +#define irqsafe_generic_cpu_cmpxchg_double(pcp1, pcp2, oval1, oval2, nval1, nval2) \ +({ \ + int ret__; \ + unsigned long flags; \ + local_irq_save(flags); \ + ret__ = __this_cpu_generic_cmpxchg_double(pcp1, pcp2, \ + oval1, oval2, nval1, nval2); \ + local_irq_restore(flags); \ + ret__; \ +}) + +#ifndef irqsafe_cpu_cmpxchg_double +# ifndef irqsafe_cpu_cmpxchg_double_1 +# define irqsafe_cpu_cmpxchg_double_1(pcp1, pcp2, oval1, oval2, nval1, nval2) \ + irqsafe_generic_cpu_cmpxchg_double(pcp1, pcp2, oval1, oval2, nval1, nval2) +# endif +# ifndef irqsafe_cpu_cmpxchg_double_2 +# define irqsafe_cpu_cmpxchg_double_2(pcp1, pcp2, oval1, oval2, nval1, nval2) \ + irqsafe_generic_cpu_cmpxchg_double(pcp1, pcp2, oval1, oval2, nval1, nval2) +# endif +# ifndef irqsafe_cpu_cmpxchg_double_4 +# define irqsafe_cpu_cmpxchg_double_4(pcp1, pcp2, oval1, oval2, nval1, nval2) \ + irqsafe_generic_cpu_cmpxchg_double(pcp1, pcp2, oval1, oval2, nval1, nval2) +# endif +# ifndef irqsafe_cpu_cmpxchg_double_8 +# define irqsafe_cpu_cmpxchg_double_8(pcp1, pcp2, oval1, oval2, nval1, nval2) \ + irqsafe_generic_cpu_cmpxchg_double(pcp1, pcp2, oval1, oval2, nval1, nval2) +# endif +# define irqsafe_cpu_cmpxchg_double(pcp1, pcp2, oval1, oval2, nval1, nval2) \ + __pcpu_double_call_return_int(irqsafe_cpu_cmpxchg_double_, (pcp1), (pcp2), (oval1), (oval2), (nval1), (nval2)) +#endif + #endif /* __LINUX_PERCPU_H */ -- cgit v1.2.3 From af06216a8ef1c430cc6ad22b562f3a11a512c5dd Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 1 Mar 2011 01:12:19 +0100 Subject: ACPI: Fix build for CONFIG_NET unset Several ACPI drivers fail to build if CONFIG_NET is unset, because they refer to things depending on CONFIG_THERMAL that in turn depends on CONFIG_NET. However, CONFIG_THERMAL doesn't really need to depend on CONFIG_NET, because the only part of it requiring CONFIG_NET is the netlink interface in thermal_sys.c. Put the netlink interface in thermal_sys.c under #ifdef CONFIG_NET and remove the dependency of CONFIG_THERMAL on CONFIG_NET from drivers/thermal/Kconfig. Signed-off-by: Rafael J. Wysocki Acked-by: Randy Dunlap Cc: Ingo Molnar Cc: Len Brown Cc: Stephen Rothwell Cc: Luming Yu Cc: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/thermal.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/linux') diff --git a/include/linux/thermal.h b/include/linux/thermal.h index 8651556dbd52..d3ec89fb4122 100644 --- a/include/linux/thermal.h +++ b/include/linux/thermal.h @@ -172,6 +172,14 @@ void thermal_zone_device_update(struct thermal_zone_device *); struct thermal_cooling_device *thermal_cooling_device_register(char *, void *, const struct thermal_cooling_device_ops *); void thermal_cooling_device_unregister(struct thermal_cooling_device *); + +#ifdef CONFIG_NET extern int generate_netlink_event(u32 orig, enum events event); +#else +static inline int generate_netlink_event(u32 orig, enum events event) +{ + return 0; +} +#endif #endif /* __THERMAL_H__ */ -- cgit v1.2.3 From f635bd11c8d332d917fb9a4cad3071b2357d5b2a Mon Sep 17 00:00:00 2001 From: Henrik Rydberg Date: Thu, 24 Feb 2011 19:30:59 +0100 Subject: HID: Do not create input devices for feature reports When the multi input quirk is set, there is a new input device created for every feature report. Since the idea is to present features per hid device, not per input device, revert back to the original report loop and change the feature_mapping() callback to not take the input device as argument. Signed-off-by: Henrik Rydberg Tested-by: Benjamin Tissoires Signed-off-by: Jiri Kosina --- include/linux/hid.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/hid.h b/include/linux/hid.h index d91c25e253c8..fc5faf60f6df 100644 --- a/include/linux/hid.h +++ b/include/linux/hid.h @@ -638,7 +638,7 @@ struct hid_driver { struct hid_input *hidinput, struct hid_field *field, struct hid_usage *usage, unsigned long **bit, int *max); void (*feature_mapping)(struct hid_device *hdev, - struct hid_input *hidinput, struct hid_field *field, + struct hid_field *field, struct hid_usage *usage); #ifdef CONFIG_PM int (*suspend)(struct hid_device *hdev, pm_message_t message); -- cgit v1.2.3 From d714d1979d7b4df7e2c127407f4014ce71f73cd0 Mon Sep 17 00:00:00 2001 From: Grant Likely Date: Tue, 22 Feb 2011 20:22:44 -0700 Subject: dt: eliminate of_platform_driver shim code Commit eca393016, "of: Merge of_platform_bus_type with platform_bus_type" added a shim to allow of_platform_drivers to get registers onto the platform bus so that there was time to migrate the existing drivers to the platform_bus_type. This patch removes the shim since there are no more users of the old interface. Signed-off-by: Grant Likely --- include/linux/of_platform.h | 12 +----------- 1 file changed, 1 insertion(+), 11 deletions(-) (limited to 'include/linux') diff --git a/include/linux/of_platform.h b/include/linux/of_platform.h index 048949fa1d10..17c7e21c0bd7 100644 --- a/include/linux/of_platform.h +++ b/include/linux/of_platform.h @@ -23,13 +23,7 @@ * of_platform_driver - Legacy of-aware driver for platform devices. * * An of_platform_driver driver is attached to a basic platform_device on - * ether the "platform bus" (platform_bus_type), or the ibm ebus - * (ibmebus_bus_type). - * - * of_platform_driver is being phased out when used with the platform_bus_type, - * and regular platform_drivers should be used instead. When the transition - * is complete, only ibmebus will be using this structure, and the - * platform_driver member of this structure will be removed. + * the ibm ebus (ibmebus_bus_type). */ struct of_platform_driver { @@ -42,15 +36,11 @@ struct of_platform_driver int (*shutdown)(struct platform_device* dev); struct device_driver driver; - struct platform_driver platform_driver; }; #define to_of_platform_driver(drv) \ container_of(drv,struct of_platform_driver, driver) /* Platform drivers register/unregister */ -extern int of_register_platform_driver(struct of_platform_driver *drv); -extern void of_unregister_platform_driver(struct of_platform_driver *drv); - extern struct platform_device *of_device_alloc(struct device_node *np, const char *bus_id, struct device *parent); -- cgit v1.2.3 From 450adcbe518ab3a3953d8475309525d22de77cba Mon Sep 17 00:00:00 2001 From: Vivek Goyal Date: Tue, 1 Mar 2011 13:40:54 -0500 Subject: blk-throttle: Do not use kblockd workqueue for throtl work o Dominik Klein reported a system hang issue while doing some blkio throttling testing. https://lkml.org/lkml/2011/2/24/173 o Some tracing revealed that CFQ was not dispatching any more jobs as queue unplug was not happening. And queue unplug was not happening because unplug work was not being called as there was one throttling work on same cpu which as not finished yet. And throttling work had not finished as it was tyring to dispatch a bio to CFQ but all the request descriptors were consume to it was put to sleep. o So basically it is a cyclic dependecny between CFQ unplug work and throtl dispatch work. Tejun suggested that use separate workqueue for such cases. o This patch uses a separate workqueue for throttle related work and does not rely on kblockd workqueue anymore. Cc: stable@kernel.org Reported-by: Dominik Klein Signed-off-by: Vivek Goyal Acked-by: Tejun Heo Signed-off-by: Jens Axboe --- include/linux/blkdev.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 4d18ff34670a..dd8cd0f47e3a 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -1088,7 +1088,6 @@ static inline void put_dev_sector(Sector p) struct work_struct; int kblockd_schedule_work(struct request_queue *q, struct work_struct *work); -int kblockd_schedule_delayed_work(struct request_queue *q, struct delayed_work *dwork, unsigned long delay); #ifdef CONFIG_BLK_CGROUP /* @@ -1136,7 +1135,6 @@ static inline uint64_t rq_io_start_time_ns(struct request *req) extern int blk_throtl_init(struct request_queue *q); extern void blk_throtl_exit(struct request_queue *q); extern int blk_throtl_bio(struct request_queue *q, struct bio **bio); -extern void throtl_schedule_delayed_work(struct request_queue *q, unsigned long delay); extern void throtl_shutdown_timer_wq(struct request_queue *q); #else /* CONFIG_BLK_DEV_THROTTLING */ static inline int blk_throtl_bio(struct request_queue *q, struct bio **bio) @@ -1146,7 +1144,6 @@ static inline int blk_throtl_bio(struct request_queue *q, struct bio **bio) static inline int blk_throtl_init(struct request_queue *q) { return 0; } static inline int blk_throtl_exit(struct request_queue *q) { return 0; } -static inline void throtl_schedule_delayed_work(struct request_queue *q, unsigned long delay) {} static inline void throtl_shutdown_timer_wq(struct request_queue *q) {} #endif /* CONFIG_BLK_DEV_THROTTLING */ -- cgit v1.2.3 From c8dcfd8a046c1f49af0c15726761af17b957962d Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Sun, 27 Feb 2011 22:08:00 +0100 Subject: cfg80211: add a field for the bitrate of the last rx data packet from a station Also fix a typo in the STATION_INFO_TX_BITRATE description Signed-off-by: Felix Fietkau Signed-off-by: John W. Linville --- include/linux/nl80211.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index 821ffb954f14..30022189104d 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -1243,6 +1243,8 @@ enum nl80211_rate_info { * @NL80211_STA_INFO_LLID: the station's mesh LLID * @NL80211_STA_INFO_PLID: the station's mesh PLID * @NL80211_STA_INFO_PLINK_STATE: peer link state for the station + * @NL80211_STA_INFO_RX_BITRATE: last unicast data frame rx rate, nested + * attribute, like NL80211_STA_INFO_TX_BITRATE. * @__NL80211_STA_INFO_AFTER_LAST: internal * @NL80211_STA_INFO_MAX: highest possible station info attribute */ @@ -1261,6 +1263,7 @@ enum nl80211_sta_info { NL80211_STA_INFO_TX_RETRIES, NL80211_STA_INFO_TX_FAILED, NL80211_STA_INFO_SIGNAL_AVG, + NL80211_STA_INFO_RX_BITRATE, /* keep last */ __NL80211_STA_INFO_AFTER_LAST, -- cgit v1.2.3 From bb879101606dd7235d8f4ecd0f707b63281d0838 Mon Sep 17 00:00:00 2001 From: Rhyland Klein Date: Mon, 28 Feb 2011 16:55:28 -0800 Subject: bq20z75: Add optional battery detect gpio Adding support for an optional gpio for battery detection. This is passed in through the i2c platform data. It also accepts another field, battery_detect_present to signify the gpio state which means the battery is present, either 0 (low) or 1 (high). Signed-off-by: Rhyland Klein Signed-off-by: Anton Vorontsov --- include/linux/power/bq20z75.h | 37 +++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 include/linux/power/bq20z75.h (limited to 'include/linux') diff --git a/include/linux/power/bq20z75.h b/include/linux/power/bq20z75.h new file mode 100644 index 000000000000..0e1b8a26a9b1 --- /dev/null +++ b/include/linux/power/bq20z75.h @@ -0,0 +1,37 @@ +/* + * Gas Gauge driver for TI's BQ20Z75 + * + * Copyright (c) 2010, NVIDIA Corporation. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +#ifndef __LINUX_POWER_BQ20Z75_H_ +#define __LINUX_POWER_BQ20Z75_H_ + +#include +#include + +/** + * struct bq20z75_platform_data - platform data for bq20z75 devices + * @battery_detect: GPIO which is used to detect battery presence + * @battery_detect_present: gpio state when battery is present (0 / 1) + */ +struct bq20z75_platform_data { + int battery_detect; + int battery_detect_present; +}; + +#endif -- cgit v1.2.3 From ff28fcef1bedcfbdf49500fee1573dc2f3eedb22 Mon Sep 17 00:00:00 2001 From: Rhyland Klein Date: Mon, 28 Feb 2011 16:55:29 -0800 Subject: bq20z75: Add i2c retry mechanism With the support of platform data, now adding support for option i2c retries on read/write failures. Ths is specified through the optional platform data. Signed-off-by: Rhyland Klein Signed-off-by: Anton Vorontsov --- include/linux/power/bq20z75.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/power/bq20z75.h b/include/linux/power/bq20z75.h index 0e1b8a26a9b1..b0843b68af92 100644 --- a/include/linux/power/bq20z75.h +++ b/include/linux/power/bq20z75.h @@ -28,10 +28,12 @@ * struct bq20z75_platform_data - platform data for bq20z75 devices * @battery_detect: GPIO which is used to detect battery presence * @battery_detect_present: gpio state when battery is present (0 / 1) + * @i2c_retry_count: # of times to retry on i2c IO failure */ struct bq20z75_platform_data { int battery_detect; int battery_detect_present; + int i2c_retry_count; }; #endif -- cgit v1.2.3 From 35c9d267665230cf44445be616d491d3763a5cd3 Mon Sep 17 00:00:00 2001 From: Rhyland Klein Date: Mon, 28 Feb 2011 16:55:31 -0800 Subject: power_supply: Update power_supply_is_watt_property Update the power_supply_is_watt_property function to include POWER_NOW. Signed-off-by: Rhyland Klein Signed-off-by: Anton Vorontsov --- include/linux/power_supply.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h index 20f23fef63cc..204c18dfdc9e 100644 --- a/include/linux/power_supply.h +++ b/include/linux/power_supply.h @@ -251,6 +251,7 @@ static inline bool power_supply_is_watt_property(enum power_supply_property psp) case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: case POWER_SUPPLY_PROP_VOLTAGE_NOW: case POWER_SUPPLY_PROP_VOLTAGE_AVG: + case POWER_SUPPLY_PROP_POWER_NOW: return 1; default: break; -- cgit v1.2.3 From 0e0b494ca8c54a7297d0cc549405091019b3b77e Mon Sep 17 00:00:00 2001 From: James Bottomley Date: Sun, 23 Jan 2011 09:42:50 -0600 Subject: libata: separate error handler into usable components Right at the moment, the libata error handler is incredibly monolithic. This makes it impossible to use from composite drivers like libsas and ipr which have to handle error themselves in the first instance. The essence of the change is to split the monolithic error handler into two components: one which handles a queue of ata commands for processing and the other which handles the back end of readying a port. This allows the upper error handler fine grained control in calling libsas functions (and making sure they only get called for ATA commands whose lower errors have been fixed up). Signed-off-by: James Bottomley Signed-off-by: Jeff Garzik --- include/linux/libata.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/libata.h b/include/linux/libata.h index c9c5d7ad1a2b..9739317c707a 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -1050,6 +1050,8 @@ extern int ata_scsi_change_queue_depth(struct scsi_device *sdev, int queue_depth, int reason); extern struct ata_device *ata_dev_pair(struct ata_device *adev); extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev); +extern void ata_scsi_port_error_handler(struct Scsi_Host *host, struct ata_port *ap); +extern void ata_scsi_cmd_error_handler(struct Scsi_Host *host, struct ata_port *ap, struct list_head *eh_q); extern int ata_cable_40wire(struct ata_port *ap); extern int ata_cable_80wire(struct ata_port *ap); -- cgit v1.2.3 From c10f97b9d8df818e51e6073be1b96454630595c1 Mon Sep 17 00:00:00 2001 From: Sergei Shtylyov Date: Fri, 4 Feb 2011 22:03:34 +0300 Subject: libata: remove ATA_FLAG_{SRST|SATA_RESET} These flags are marked as obsolete and the checks for them have been removed by commit 294440887b32c58d220fb54b73b7a58079b78f20 (libata-sff: kill unused ata_bus_reset()), so I think it's time to finally get rid of them... Signed-off-by: Sergei Shtylyov Signed-off-by: Jeff Garzik --- include/linux/libata.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/libata.h b/include/linux/libata.h index 9739317c707a..51ec439f75ad 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -181,8 +181,6 @@ enum { ATA_FLAG_SATA = (1 << 1), ATA_FLAG_NO_LEGACY = (1 << 2), /* no legacy mode check */ ATA_FLAG_MMIO = (1 << 3), /* use MMIO, not PIO */ - ATA_FLAG_SRST = (1 << 4), /* (obsolete) use ATA SRST, not E.D.D. */ - ATA_FLAG_SATA_RESET = (1 << 5), /* (obsolete) use COMRESET */ ATA_FLAG_NO_ATAPI = (1 << 6), /* No ATAPI support */ ATA_FLAG_PIO_DMA = (1 << 7), /* PIO cmds via DMA */ ATA_FLAG_PIO_LBA48 = (1 << 8), /* Host DMA engine is LBA28 only */ -- cgit v1.2.3 From 3696df309971b3427cb9cb039138a1732a865a0b Mon Sep 17 00:00:00 2001 From: Sergei Shtylyov Date: Fri, 4 Feb 2011 22:04:17 +0300 Subject: libata: remove ATA_FLAG_MMIO Commit 0d5ff566779f894ca9937231a181eb31e4adff0e (libata: convert to iomap) removed all checks of ATA_FLAG_MMIO but neglected to remove the flag itself. Do it now, at last... Signed-off-by: Sergei Shtylyov Signed-off-by: Jeff Garzik --- include/linux/libata.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/libata.h b/include/linux/libata.h index 51ec439f75ad..0c3d9e144891 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -180,7 +180,6 @@ enum { /* (doesn't imply presence) */ ATA_FLAG_SATA = (1 << 1), ATA_FLAG_NO_LEGACY = (1 << 2), /* no legacy mode check */ - ATA_FLAG_MMIO = (1 << 3), /* use MMIO, not PIO */ ATA_FLAG_NO_ATAPI = (1 << 6), /* No ATAPI support */ ATA_FLAG_PIO_DMA = (1 << 7), /* PIO cmds via DMA */ ATA_FLAG_PIO_LBA48 = (1 << 8), /* Host DMA engine is LBA28 only */ -- cgit v1.2.3 From 9cbe056f6c467e7395d5aec39aceec47812eb98e Mon Sep 17 00:00:00 2001 From: Sergei Shtylyov Date: Fri, 4 Feb 2011 22:05:48 +0300 Subject: libata: remove ATA_FLAG_NO_LEGACY All checks of ATA_FLAG_NO_LEGACY have been removed by the commits c791c30670ea61f19eec390124128bf278e854fe ([libata] minor PCI IDE probe fixes and cleanups) and f0d36efdc624beb3d9e29b9ab9e9537bf0f25d5b (libata: update libata core layer to use devres), so I think it's time to finally get rid of this flag... Signed-off-by: Sergei Shtylyov Signed-off-by: Jeff Garzik --- include/linux/libata.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/libata.h b/include/linux/libata.h index 0c3d9e144891..26d80479c75f 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -179,7 +179,6 @@ enum { ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */ /* (doesn't imply presence) */ ATA_FLAG_SATA = (1 << 1), - ATA_FLAG_NO_LEGACY = (1 << 2), /* no legacy mode check */ ATA_FLAG_NO_ATAPI = (1 << 6), /* No ATAPI support */ ATA_FLAG_PIO_DMA = (1 << 7), /* PIO cmds via DMA */ ATA_FLAG_PIO_LBA48 = (1 << 8), /* Host DMA engine is LBA28 only */ -- cgit v1.2.3 From 1a0f6b7ecdcd810f8991ea26c95d93ff965e8f41 Mon Sep 17 00:00:00 2001 From: Sergei Shtylyov Date: Fri, 4 Feb 2011 22:08:22 +0300 Subject: libata: remove ATA_FLAG_LPM Commit 6b7ae9545ad9875a289f4191c0216b473e313cb9 (libata: reimplement link power management) removed the check of ATA_FLAG_LPM but neglected to remove the flag itself. Do it now... Signed-off-by: Sergei Shtylyov Signed-off-by: Jeff Garzik --- include/linux/libata.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/libata.h b/include/linux/libata.h index 26d80479c75f..71333aa39532 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -194,7 +194,6 @@ enum { ATA_FLAG_ACPI_SATA = (1 << 17), /* need native SATA ACPI layout */ ATA_FLAG_AN = (1 << 18), /* controller supports AN */ ATA_FLAG_PMP = (1 << 19), /* controller supports PMP */ - ATA_FLAG_LPM = (1 << 20), /* driver can handle LPM */ ATA_FLAG_EM = (1 << 21), /* driver supports enclosure * management */ ATA_FLAG_SW_ACTIVITY = (1 << 22), /* driver supports sw activity -- cgit v1.2.3 From 77bd70e9009eab6dbdef3ee08afe87ab26df8dac Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Fri, 4 Feb 2011 14:57:43 +0000 Subject: mfd: Don't suspend WM8994 if the CODEC is not suspended ASoC supports keeping the audio subsysetm active over suspend in order to support use cases such as audio passthrough from a cellular modem with the main CPU suspended. Ensure that we don't power down the CODEC when this is happening by checking to see if VMID is up and skipping suspend and resume when it is. If the CODEC has suspended then it'll turn VMID off before the core suspend() gets called. Signed-off-by: Mark Brown Signed-off-by: Samuel Ortiz --- include/linux/mfd/wm8994/core.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/mfd/wm8994/core.h b/include/linux/mfd/wm8994/core.h index 3fd36845ca45..ef4f0b6083a3 100644 --- a/include/linux/mfd/wm8994/core.h +++ b/include/linux/mfd/wm8994/core.h @@ -71,6 +71,7 @@ struct wm8994 { u16 irq_masks_cache[WM8994_NUM_IRQ_REGS]; /* Used over suspend/resume */ + bool suspended; u16 ldo_regs[WM8994_NUM_LDO_REGS]; u16 gpio_regs[WM8994_NUM_GPIO_REGS]; -- cgit v1.2.3 From 1654e7411a1ad4999fe7890ef51d2a2bbb1fcf76 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 2 Mar 2011 08:48:05 -0500 Subject: block: add @force_kblockd to __blk_run_queue() __blk_run_queue() automatically either calls q->request_fn() directly or schedules kblockd depending on whether the function is recursed. blk-flush implementation needs to be able to explicitly choose kblockd. Add @force_kblockd. All the current users are converted to specify %false for the parameter and this patch doesn't introduce any behavior change. stable: This is prerequisite for fixing ide oops caused by the new blk-flush implementation. Signed-off-by: Tejun Heo Cc: Jan Beulich Cc: James Bottomley Cc: stable@kernel.org Signed-off-by: Jens Axboe --- include/linux/blkdev.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index dd8cd0f47e3a..d5063e1b5555 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -699,7 +699,7 @@ extern void blk_start_queue(struct request_queue *q); extern void blk_stop_queue(struct request_queue *q); extern void blk_sync_queue(struct request_queue *q); extern void __blk_stop_queue(struct request_queue *q); -extern void __blk_run_queue(struct request_queue *); +extern void __blk_run_queue(struct request_queue *q, bool force_kblockd); extern void blk_run_queue(struct request_queue *); extern int blk_rq_map_user(struct request_queue *, struct request *, struct rq_map_data *, void __user *, unsigned long, -- cgit v1.2.3 From a8d380f30a7d8cc507fd5cc84b2dc5ee2b2144d7 Mon Sep 17 00:00:00 2001 From: Dima Zavin Date: Wed, 2 Mar 2011 13:17:08 -0800 Subject: msm: mdp: Add support for RGBX 8888 image format. Signed-off-by: Dima Zavin Signed-off-by: Carl Vanderlip Signed-off-by: David Brown --- include/linux/msm_mdp.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/msm_mdp.h b/include/linux/msm_mdp.h index d11fe0f2f956..fe722c1fb61d 100644 --- a/include/linux/msm_mdp.h +++ b/include/linux/msm_mdp.h @@ -32,6 +32,7 @@ enum { MDP_Y_CBCR_H2V1, /* Y and CrCb, pseduo planar w/ Cr is in MSB */ MDP_RGBA_8888, /* ARGB 888 */ MDP_BGRA_8888, /* ABGR 888 */ + MDP_RGBX_8888, /* RGBX 888 */ MDP_IMGTYPE_LIMIT /* Non valid image type after this enum */ }; -- cgit v1.2.3 From da527770007fce8e4541947d47918248286da875 Mon Sep 17 00:00:00 2001 From: Vivek Goyal Date: Wed, 2 Mar 2011 19:05:33 -0500 Subject: block: Move blk_throtl_exit() call to blk_cleanup_queue() Move blk_throtl_exit() in blk_cleanup_queue() as blk_throtl_exit() is written in such a way that it needs queue lock. In blk_release_queue() there is no gurantee that ->queue_lock is still around. Initially blk_throtl_exit() was in blk_cleanup_queue() but Ingo reported one problem. https://lkml.org/lkml/2010/10/23/86 And a quick fix moved blk_throtl_exit() to blk_release_queue(). commit 7ad58c028652753814054f4e3ac58f925e7343f4 Author: Jens Axboe Date: Sat Oct 23 20:40:26 2010 +0200 block: fix use-after-free bug in blk throttle code This patch reverts above change and does not try to shutdown the throtl work in blk_sync_queue(). By avoiding call to throtl_shutdown_timer_wq() from blk_sync_queue(), we should also avoid the problem reported by Ingo. blk_sync_queue() seems to be used only by md driver and it seems to be using it to make sure q->unplug_fn is not called as md registers its own unplug functions and it is about to free up the data structures used by unplug_fn(). Block throttle does not call back into unplug_fn() or into md. So there is no need to cancel blk throttle work. In fact I think cancelling block throttle work is bad because it might happen that some bios are throttled and scheduled to be dispatched later with the help of pending work and if work is cancelled, these bios might never be dispatched. Block layer also uses blk_sync_queue() during blk_cleanup_queue() and blk_release_queue() time. That should be safe as we are also calling blk_throtl_exit() which should make sure all the throttling related data structures are cleaned up. Signed-off-by: Vivek Goyal Signed-off-by: Jens Axboe --- include/linux/blkdev.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index e3ee74fc5903..23fb92506c31 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -1144,7 +1144,6 @@ extern int blk_throtl_init(struct request_queue *q); extern void blk_throtl_exit(struct request_queue *q); extern int blk_throtl_bio(struct request_queue *q, struct bio **bio); extern void throtl_schedule_delayed_work(struct request_queue *q, unsigned long delay); -extern void throtl_shutdown_timer_wq(struct request_queue *q); #else /* CONFIG_BLK_DEV_THROTTLING */ static inline int blk_throtl_bio(struct request_queue *q, struct bio **bio) { @@ -1154,7 +1153,6 @@ static inline int blk_throtl_bio(struct request_queue *q, struct bio **bio) static inline int blk_throtl_init(struct request_queue *q) { return 0; } static inline int blk_throtl_exit(struct request_queue *q) { return 0; } static inline void throtl_schedule_delayed_work(struct request_queue *q, unsigned long delay) {} -static inline void throtl_shutdown_timer_wq(struct request_queue *q) {} #endif /* CONFIG_BLK_DEV_THROTTLING */ #define MODULE_ALIAS_BLOCKDEV(major,minor) \ -- cgit v1.2.3 From 0a0d128d023a49eb8afa0e988e6773416318a0b5 Mon Sep 17 00:00:00 2001 From: Ilkka Koskinen Date: Wed, 2 Mar 2011 13:24:06 +0000 Subject: mfd: twl4030_codec: Remove unused and duplicate audio_mclk fields audio_mclk can be queried from mfd driver. Therefore, it is not needed in twl4030_codec_audio_data or in twl4030_codec_vibra_data anymore. Signed-off-by: Ilkka Koskinen Acked-by: Peter Ujfalusi Acked-by: Mark Brown Acked-by: Samuel Ortiz Signed-off-by: Tony Lindgren --- include/linux/i2c/twl.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/i2c/twl.h b/include/linux/i2c/twl.h index 61b9609e55f2..9d88b717111a 100644 --- a/include/linux/i2c/twl.h +++ b/include/linux/i2c/twl.h @@ -637,7 +637,6 @@ extern void twl4030_power_init(struct twl4030_power_data *triton2_scripts); extern int twl4030_remove_script(u8 flags); struct twl4030_codec_audio_data { - unsigned int audio_mclk; /* not used, will be removed */ unsigned int digimic_delay; /* in ms */ unsigned int ramp_delay_value; unsigned int offset_cncl_path; @@ -648,7 +647,6 @@ struct twl4030_codec_audio_data { }; struct twl4030_codec_vibra_data { - unsigned int audio_mclk; unsigned int coexist; }; -- cgit v1.2.3 From 23b41168fc942a4a041325a04ecc1bd17d031a3e Mon Sep 17 00:00:00 2001 From: Vlad Dogaru Date: Sat, 26 Feb 2011 22:39:12 +0000 Subject: netdevice: make initial group visible to userspace INIT_NETDEV_GROUP is needed by userspace, move it outside __KERNEL__ guards. Signed-off-by: Vlad Dogaru Signed-off-by: David S. Miller --- include/linux/netdevice.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index ffe56c16df8a..8be4056ad251 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -75,9 +75,6 @@ struct wireless_dev; #define NET_RX_SUCCESS 0 /* keep 'em coming, baby */ #define NET_RX_DROP 1 /* packet dropped */ -/* Initial net device group. All devices belong to group 0 by default. */ -#define INIT_NETDEV_GROUP 0 - /* * Transmit return codes: transmit return codes originate from three different * namespaces: @@ -141,6 +138,9 @@ static inline bool dev_xmit_complete(int rc) #define MAX_ADDR_LEN 32 /* Largest hardware address length */ +/* Initial net device group. All devices belong to group 0 by default. */ +#define INIT_NETDEV_GROUP 0 + #ifdef __KERNEL__ /* * Compute the worst case header length according to the protocols -- cgit v1.2.3 From eed84713bc47ce2f7d675914f297ad9b6227a587 Mon Sep 17 00:00:00 2001 From: Shmulik Ravid Date: Sun, 27 Feb 2011 05:04:31 +0000 Subject: dcbnl: add support for retrieving peer configuration - ieee These 2 patches add the support for retrieving the remote or peer DCBX configuration via dcbnl for embedded DCBX stacks. The peer configuration is part of the DCBX MIB and is useful for debugging and diagnostics of the overall DCB configuration. The first patch add this support for IEEE 802.1Qaz standard the second patch add the same support for the older CEE standard. Diff for v2 - the peer-app-info is CEE specific. Signed-off-by: Shmulik Ravid Signed-off-by: David S. Miller --- include/linux/dcbnl.h | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) (limited to 'include/linux') diff --git a/include/linux/dcbnl.h b/include/linux/dcbnl.h index 4c5b26e0cc48..2542685f8b3e 100644 --- a/include/linux/dcbnl.h +++ b/include/linux/dcbnl.h @@ -110,6 +110,20 @@ struct dcb_app { __u16 protocol; }; +/** + * struct dcb_peer_app_info - APP feature information sent by the peer + * + * @willing: willing bit in the peer APP tlv + * @error: error bit in the peer APP tlv + * + * In addition to this information the full peer APP tlv also contains + * a table of 'app_count' APP objects defined above. + */ +struct dcb_peer_app_info { + __u8 willing; + __u8 error; +}; + struct dcbmsg { __u8 dcb_family; __u8 cmd; @@ -235,11 +249,25 @@ enum dcbnl_attrs { DCB_ATTR_MAX = __DCB_ATTR_ENUM_MAX - 1, }; +/** + * enum ieee_attrs - IEEE 802.1Qaz get/set attributes + * + * @DCB_ATTR_IEEE_UNSPEC: unspecified + * @DCB_ATTR_IEEE_ETS: negotiated ETS configuration + * @DCB_ATTR_IEEE_PFC: negotiated PFC configuration + * @DCB_ATTR_IEEE_APP_TABLE: negotiated APP configuration + * @DCB_ATTR_IEEE_PEER_ETS: peer ETS configuration - get only + * @DCB_ATTR_IEEE_PEER_PFC: peer PFC configuration - get only + * @DCB_ATTR_IEEE_PEER_APP: peer APP tlv - get only + */ enum ieee_attrs { DCB_ATTR_IEEE_UNSPEC, DCB_ATTR_IEEE_ETS, DCB_ATTR_IEEE_PFC, DCB_ATTR_IEEE_APP_TABLE, + DCB_ATTR_IEEE_PEER_ETS, + DCB_ATTR_IEEE_PEER_PFC, + DCB_ATTR_IEEE_PEER_APP, __DCB_ATTR_IEEE_MAX }; #define DCB_ATTR_IEEE_MAX (__DCB_ATTR_IEEE_MAX - 1) -- cgit v1.2.3 From dc6ed1df5a5f84e45e77e2acb6fd99b995414956 Mon Sep 17 00:00:00 2001 From: Shmulik Ravid Date: Sun, 27 Feb 2011 05:04:38 +0000 Subject: dcbnl: add support for retrieving peer configuration - cee This patch adds the support for retrieving the remote or peer DCBX configuration via dcbnl for embedded DCBX stacks supporting the CEE DCBX standard. Signed-off-by: Shmulik Ravid Signed-off-by: David S. Miller --- include/linux/dcbnl.h | 71 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 71 insertions(+) (limited to 'include/linux') diff --git a/include/linux/dcbnl.h b/include/linux/dcbnl.h index 2542685f8b3e..a3680a16718f 100644 --- a/include/linux/dcbnl.h +++ b/include/linux/dcbnl.h @@ -87,6 +87,45 @@ struct ieee_pfc { __u64 indications[IEEE_8021QAZ_MAX_TCS]; }; +/* CEE DCBX std supported values */ +#define CEE_DCBX_MAX_PGS 8 +#define CEE_DCBX_MAX_PRIO 8 + +/** + * struct cee_pg - CEE Prioity-Group managed object + * + * @willing: willing bit in the PG tlv + * @error: error bit in the PG tlv + * @pg_en: enable bit of the PG feature + * @tcs_supported: number of traffic classes supported + * @pg_bw: bandwidth percentage for each priority group + * @prio_pg: priority to PG mapping indexed by priority + */ +struct cee_pg { + __u8 willing; + __u8 error; + __u8 pg_en; + __u8 tcs_supported; + __u8 pg_bw[CEE_DCBX_MAX_PGS]; + __u8 prio_pg[CEE_DCBX_MAX_PGS]; +}; + +/** + * struct cee_pfc - CEE PFC managed object + * + * @willing: willing bit in the PFC tlv + * @error: error bit in the PFC tlv + * @pfc_en: bitmap indicating pfc enabled traffic classes + * @tcs_supported: number of traffic classes supported + */ +struct cee_pfc { + __u8 willing; + __u8 error; + __u8 pfc_en; + __u8 tcs_supported; +}; + + /* This structure contains the IEEE 802.1Qaz APP managed object. This * object is also used for the CEE std as well. There is no difference * between the objects. @@ -158,6 +197,7 @@ struct dcbmsg { * @DCB_CMD_SDCBX: set DCBX engine configuration * @DCB_CMD_GFEATCFG: get DCBX features flags * @DCB_CMD_SFEATCFG: set DCBX features negotiation flags + * @DCB_CMD_CEE_GET: get CEE aggregated configuration */ enum dcbnl_commands { DCB_CMD_UNDEFINED, @@ -200,6 +240,8 @@ enum dcbnl_commands { DCB_CMD_GFEATCFG, DCB_CMD_SFEATCFG, + DCB_CMD_CEE_GET, + __DCB_CMD_ENUM_MAX, DCB_CMD_MAX = __DCB_CMD_ENUM_MAX - 1, }; @@ -222,6 +264,7 @@ enum dcbnl_commands { * @DCB_ATTR_IEEE: IEEE 802.1Qaz supported attributes (NLA_NESTED) * @DCB_ATTR_DCBX: DCBX engine configuration in the device (NLA_U8) * @DCB_ATTR_FEATCFG: DCBX features flags (NLA_NESTED) + * @DCB_ATTR_CEE: CEE std supported attributes (NLA_NESTED) */ enum dcbnl_attrs { DCB_ATTR_UNDEFINED, @@ -245,6 +288,9 @@ enum dcbnl_attrs { DCB_ATTR_DCBX, DCB_ATTR_FEATCFG, + /* CEE nested attributes */ + DCB_ATTR_CEE, + __DCB_ATTR_ENUM_MAX, DCB_ATTR_MAX = __DCB_ATTR_ENUM_MAX - 1, }; @@ -279,6 +325,31 @@ enum ieee_attrs_app { }; #define DCB_ATTR_IEEE_APP_MAX (__DCB_ATTR_IEEE_APP_MAX - 1) +/** + * enum cee_attrs - CEE DCBX get attributes + * + * @DCB_ATTR_CEE_UNSPEC: unspecified + * @DCB_ATTR_CEE_PEER_PG: peer PG configuration - get only + * @DCB_ATTR_CEE_PEER_PFC: peer PFC configuration - get only + * @DCB_ATTR_CEE_PEER_APP: peer APP tlv - get only + */ +enum cee_attrs { + DCB_ATTR_CEE_UNSPEC, + DCB_ATTR_CEE_PEER_PG, + DCB_ATTR_CEE_PEER_PFC, + DCB_ATTR_CEE_PEER_APP_TABLE, + __DCB_ATTR_CEE_MAX +}; +#define DCB_ATTR_CEE_MAX (__DCB_ATTR_CEE_MAX - 1) + +enum peer_app_attr { + DCB_ATTR_CEE_PEER_APP_UNSPEC, + DCB_ATTR_CEE_PEER_APP_INFO, + DCB_ATTR_CEE_PEER_APP, + __DCB_ATTR_CEE_PEER_APP_MAX +}; +#define DCB_ATTR_CEE_PEER_APP_MAX (__DCB_ATTR_CEE_PEER_APP_MAX - 1) + /** * enum dcbnl_pfc_attrs - DCB Priority Flow Control user priority nested attrs * -- cgit v1.2.3 From 2d3a8497f8cc5aca14b722cd37d51f6c15ff9f74 Mon Sep 17 00:00:00 2001 From: Tao Ma Date: Thu, 3 Mar 2011 10:53:20 -0500 Subject: blktrace: Remove blk_fill_rwbs_rq. If we enable trace events to trace block actions, We use blk_fill_rwbs_rq to analyze the corresponding actions in request's cmd_flags, but we only choose the minor 2 bits from it, so most of other flags(e.g, REQ_SYNC) are missing. For example, with a sync write we get: write_test-2409 [001] 160.013869: block_rq_insert: 3,64 W 0 () 258135 + = 8 [write_test] Since now we have integrated the flags of both bio and request, it is safe to pass rq->cmd_flags directly to blk_fill_rwbs and blk_fill_rwbs_rq isn't needed any more. With this patch, after a sync write we get: write_test-2417 [000] 226.603878: block_rq_insert: 3,64 WS 0 () 258135 += 8 [write_test] Signed-off-by: Tao Ma Acked-by: Jeff Moyer Signed-off-by: Jens Axboe --- include/linux/blktrace_api.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/blktrace_api.h b/include/linux/blktrace_api.h index 3395cf7130f5..b22fb0d3db0f 100644 --- a/include/linux/blktrace_api.h +++ b/include/linux/blktrace_api.h @@ -245,7 +245,6 @@ static inline int blk_cmd_buf_len(struct request *rq) extern void blk_dump_cmd(char *buf, struct request *rq); extern void blk_fill_rwbs(char *rwbs, u32 rw, int bytes); -extern void blk_fill_rwbs_rq(char *rwbs, struct request *rq); #endif /* CONFIG_EVENT_TRACING && CONFIG_BLOCK */ -- cgit v1.2.3 From c53fa1ed92cd671a1dfb1e7569e9ab672612ddc6 Mon Sep 17 00:00:00 2001 From: Patrick McHardy Date: Thu, 3 Mar 2011 10:55:40 -0800 Subject: netlink: kill loginuid/sessionid/sid members from struct netlink_skb_parms Netlink message processing in the kernel is synchronous these days, the session information can be collected when needed. Signed-off-by: Patrick McHardy Signed-off-by: David S. Miller --- include/linux/netlink.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/netlink.h b/include/linux/netlink.h index e2b9e63afa68..66823b862022 100644 --- a/include/linux/netlink.h +++ b/include/linux/netlink.h @@ -161,9 +161,6 @@ struct netlink_skb_parms { __u32 pid; __u32 dst_group; kernel_cap_t eff_cap; - __u32 loginuid; /* Login (audit) uid */ - __u32 sessionid; /* Session id (audit) */ - __u32 sid; /* SELinux security id */ }; #define NETLINK_CB(skb) (*(struct netlink_skb_parms*)&((skb)->cb)) -- cgit v1.2.3 From ff36fe2c845cab2102e4826c1ffa0a6ebf487c65 Mon Sep 17 00:00:00 2001 From: Eric Paris Date: Thu, 3 Mar 2011 16:09:14 -0500 Subject: LSM: Pass -o remount options to the LSM The VFS mount code passes the mount options to the LSM. The LSM will remove options it understands from the data and the VFS will then pass the remaining options onto the underlying filesystem. This is how options like the SELinux context= work. The problem comes in that -o remount never calls into LSM code. So if you include an LSM specific option it will get passed to the filesystem and will cause the remount to fail. An example of where this is a problem is the 'seclabel' option. The SELinux LSM hook will print this word in /proc/mounts if the filesystem is being labeled using xattrs. If you pass this word on mount it will be silently stripped and ignored. But if you pass this word on remount the LSM never gets called and it will be passed to the FS. The FS doesn't know what seclabel means and thus should fail the mount. For example an ext3 fs mounted over loop # mount -o loop /tmp/fs /mnt/tmp # cat /proc/mounts | grep /mnt/tmp /dev/loop0 /mnt/tmp ext3 rw,seclabel,relatime,errors=continue,barrier=0,data=ordered 0 0 # mount -o remount /mnt/tmp mount: /mnt/tmp not mounted already, or bad option # dmesg EXT3-fs (loop0): error: unrecognized mount option "seclabel" or missing value This patch passes the remount mount options to an new LSM hook. Signed-off-by: Eric Paris Reviewed-by: James Morris --- include/linux/security.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'include/linux') diff --git a/include/linux/security.h b/include/linux/security.h index 14167f2eb35a..d11ac43ecc49 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -268,6 +268,12 @@ static inline void security_free_mnt_opts(struct security_mnt_opts *opts) * @orig the original mount data copied from userspace. * @copy copied data which will be passed to the security module. * Returns 0 if the copy was successful. + * @sb_remount: + * Extracts security system specifc mount options and verifys no changes + * are being made to those options. + * @sb superblock being remounted + * @data contains the filesystem-specific data. + * Return 0 if permission is granted. * @sb_umount: * Check permission before the @mnt file system is unmounted. * @mnt contains the mounted file system. @@ -1394,6 +1400,7 @@ struct security_operations { int (*sb_alloc_security) (struct super_block *sb); void (*sb_free_security) (struct super_block *sb); int (*sb_copy_data) (char *orig, char *copy); + int (*sb_remount) (struct super_block *sb, void *data); int (*sb_kern_mount) (struct super_block *sb, int flags, void *data); int (*sb_show_options) (struct seq_file *m, struct super_block *sb); int (*sb_statfs) (struct dentry *dentry); @@ -1676,6 +1683,7 @@ int security_bprm_secureexec(struct linux_binprm *bprm); int security_sb_alloc(struct super_block *sb); void security_sb_free(struct super_block *sb); int security_sb_copy_data(char *orig, char *copy); +int security_sb_remount(struct super_block *sb, void *data); int security_sb_kern_mount(struct super_block *sb, int flags, void *data); int security_sb_show_options(struct seq_file *m, struct super_block *sb); int security_sb_statfs(struct dentry *dentry); @@ -1955,6 +1963,11 @@ static inline int security_sb_copy_data(char *orig, char *copy) return 0; } +static inline int security_sb_remount(struct super_block *sb, void *data) +{ + return 0; +} + static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data) { return 0; -- cgit v1.2.3 From 01a16b21d6adf992aa863186c3c4e561a57c1714 Mon Sep 17 00:00:00 2001 From: Patrick McHardy Date: Thu, 3 Mar 2011 13:32:07 -0800 Subject: netlink: kill eff_cap from struct netlink_skb_parms Netlink message processing in the kernel is synchronous these days, capabilities can be checked directly in security_netlink_recv() from the current process. Signed-off-by: Patrick McHardy Reviewed-by: James Morris [chrisw: update to include pohmelfs and uvesafb] Signed-off-by: Chris Wright Signed-off-by: David S. Miller --- include/linux/netlink.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/netlink.h b/include/linux/netlink.h index 66823b862022..4c4ac3f3ce5a 100644 --- a/include/linux/netlink.h +++ b/include/linux/netlink.h @@ -160,7 +160,6 @@ struct netlink_skb_parms { struct ucred creds; /* Skb credentials */ __u32 pid; __u32 dst_group; - kernel_cap_t eff_cap; }; #define NETLINK_CB(skb) (*(struct netlink_skb_parms*)&((skb)->cb)) -- cgit v1.2.3 From a7e3ed1e470116c9d12c2f778431a481a6be8ab6 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Thu, 3 Mar 2011 10:34:47 +0800 Subject: perf: Add support for supplementary event registers Change logs against Andi's original version: - Extends perf_event_attr:config to config{,1,2} (Peter Zijlstra) - Fixed a major event scheduling issue. There cannot be a ref++ on an event that has already done ref++ once and without calling put_constraint() in between. (Stephane Eranian) - Use thread_cpumask for percore allocation. (Lin Ming) - Use MSR names in the extra reg lists. (Lin Ming) - Remove redundant "c = NULL" in intel_percore_constraints - Fix comment of perf_event_attr::config1 Intel Nehalem/Westmere have a special OFFCORE_RESPONSE event that can be used to monitor any offcore accesses from a core. This is a very useful event for various tunings, and it's also needed to implement the generic LLC-* events correctly. Unfortunately this event requires programming a mask in a separate register. And worse this separate register is per core, not per CPU thread. This patch: - Teaches perf_events that OFFCORE_RESPONSE needs extra parameters. The extra parameters are passed by user space in the perf_event_attr::config1 field. - Adds support to the Intel perf_event core to schedule per core resources. This adds fairly generic infrastructure that can be also used for other per core resources. The basic code has is patterned after the similar AMD northbridge constraints code. Thanks to Stephane Eranian who pointed out some problems in the original version and suggested improvements. Signed-off-by: Andi Kleen Signed-off-by: Lin Ming Signed-off-by: Peter Zijlstra LKML-Reference: <1299119690-13991-2-git-send-email-ming.m.lin@intel.com> Signed-off-by: Ingo Molnar --- include/linux/perf_event.h | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index 8ceb5a6fd9c9..614615b8d42b 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -225,8 +225,14 @@ struct perf_event_attr { }; __u32 bp_type; - __u64 bp_addr; - __u64 bp_len; + union { + __u64 bp_addr; + __u64 config1; /* extension of config */ + }; + union { + __u64 bp_len; + __u64 config2; /* extension of config1 */ + }; }; /* @@ -541,6 +547,9 @@ struct hw_perf_event { unsigned long event_base; int idx; int last_cpu; + unsigned int extra_reg; + u64 extra_config; + int extra_alloc; }; struct { /* software */ struct hrtimer hrtimer; -- cgit v1.2.3 From e3e89cc535223433a619d0969db3fa05cdd946b8 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Fri, 4 Mar 2011 09:23:30 -0800 Subject: Mark ptrace_{traceme,attach,detach} static They are only used inside kernel/ptrace.c, and have been for a long time. We don't want to go back to the bad-old-days when architectures did things on their own, so make them static and private. Signed-off-by: Linus Torvalds --- include/linux/ptrace.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h index 092a04f874a8..a1147e5dd245 100644 --- a/include/linux/ptrace.h +++ b/include/linux/ptrace.h @@ -102,11 +102,8 @@ extern long arch_ptrace(struct task_struct *child, long request, unsigned long addr, unsigned long data); -extern int ptrace_traceme(void); extern int ptrace_readdata(struct task_struct *tsk, unsigned long src, char __user *dst, int len); extern int ptrace_writedata(struct task_struct *tsk, char __user *src, unsigned long dst, int len); -extern int ptrace_attach(struct task_struct *tsk); -extern int ptrace_detach(struct task_struct *, unsigned int); extern void ptrace_disable(struct task_struct *); extern int ptrace_check_attach(struct task_struct *task, int kill); extern int ptrace_request(struct task_struct *child, long request, -- cgit v1.2.3 From 60bf8bf8815e6adea4c1d0423578c3b8000e2ec8 Mon Sep 17 00:00:00 2001 From: Sage Weil Date: Fri, 4 Mar 2011 12:24:28 -0800 Subject: libceph: fix msgr backoff With commit f363e45f we replaced a bunch of hacky workqueue mutual exclusion logic with the WQ_NON_REENTRANT flag. One pieces of fallout is that the exponential backoff breaks in certain cases: * con_work attempts to connect. * we get an immediate failure, and the socket state change handler queues immediate work. * con_work calls con_fault, we decide to back off, but can't queue delayed work. In this case, we add a BACKOFF bit to make con_work reschedule delayed work next time it runs (which should be immediately). Signed-off-by: Sage Weil --- include/linux/ceph/messenger.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/ceph/messenger.h b/include/linux/ceph/messenger.h index c3011beac30d..eb31e108a64d 100644 --- a/include/linux/ceph/messenger.h +++ b/include/linux/ceph/messenger.h @@ -123,6 +123,7 @@ struct ceph_msg_pos { #define SOCK_CLOSED 11 /* socket state changed to closed */ #define OPENING 13 /* open connection w/ (possibly new) peer */ #define DEAD 14 /* dead, about to kfree */ +#define BACKOFF 15 /* * A single connection with another host. -- cgit v1.2.3 From e76661d0a59e53e5cc4dccbe4b755d1dc8a968ec Mon Sep 17 00:00:00 2001 From: Sage Weil Date: Thu, 3 Mar 2011 10:10:15 -0800 Subject: libceph: fix msgr keepalive flag There was some broken keepalive code using a dead variable. Shift to using the proper bit flag. Signed-off-by: Sage Weil --- include/linux/ceph/messenger.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/ceph/messenger.h b/include/linux/ceph/messenger.h index eb31e108a64d..31d91a64838b 100644 --- a/include/linux/ceph/messenger.h +++ b/include/linux/ceph/messenger.h @@ -161,7 +161,6 @@ struct ceph_connection { struct list_head out_queue; struct list_head out_sent; /* sending or sent but unacked */ u64 out_seq; /* last message queued for send */ - bool out_keepalive_pending; u64 in_seq, in_seq_acked; /* last message received, acked */ -- cgit v1.2.3 From 2f5f9486f8c12e3aa40fe3775a18cb14efc5cea2 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Fri, 4 Mar 2011 17:36:29 -0800 Subject: mm: change alloc_pages_vma to pass down the policy node for local policy Currently alloc_pages_vma() always uses the local node as policy node for the LOCAL policy. Pass this node down as an argument instead. No behaviour change from this patch, but will be needed for followons. Acked-by: Andrea Arcangeli Signed-off-by: Andi Kleen Reviewed-by: KAMEZAWA Hiroyuki Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/gfp.h | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/gfp.h b/include/linux/gfp.h index 0b84c61607e8..37b8af5db091 100644 --- a/include/linux/gfp.h +++ b/include/linux/gfp.h @@ -332,16 +332,17 @@ alloc_pages(gfp_t gfp_mask, unsigned int order) return alloc_pages_current(gfp_mask, order); } extern struct page *alloc_pages_vma(gfp_t gfp_mask, int order, - struct vm_area_struct *vma, unsigned long addr); + struct vm_area_struct *vma, unsigned long addr, + int node); #else #define alloc_pages(gfp_mask, order) \ alloc_pages_node(numa_node_id(), gfp_mask, order) -#define alloc_pages_vma(gfp_mask, order, vma, addr) \ +#define alloc_pages_vma(gfp_mask, order, vma, addr, node) \ alloc_pages(gfp_mask, order) #endif #define alloc_page(gfp_mask) alloc_pages(gfp_mask, 0) -#define alloc_page_vma(gfp_mask, vma, addr) \ - alloc_pages_vma(gfp_mask, 0, vma, addr) +#define alloc_page_vma(gfp_mask, vma, addr) \ + alloc_pages_vma(gfp_mask, 0, vma, addr, numa_node_id()) extern unsigned long __get_free_pages(gfp_t gfp_mask, unsigned int order); extern unsigned long get_zeroed_page(gfp_t gfp_mask); -- cgit v1.2.3 From 236344d6b417d05a3080477639234fd9ca97568d Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Fri, 4 Mar 2011 17:36:30 -0800 Subject: mm: add alloc_page_vma_node() Add a alloc_page_vma_node that allows passing the "local" node in. Used in a followon patch. Acked-by: Andrea Arcangeli Signed-off-by: Andi Kleen Reviewed-by: KAMEZAWA Hiroyuki Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/gfp.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/gfp.h b/include/linux/gfp.h index 37b8af5db091..dca31761b311 100644 --- a/include/linux/gfp.h +++ b/include/linux/gfp.h @@ -343,6 +343,8 @@ extern struct page *alloc_pages_vma(gfp_t gfp_mask, int order, #define alloc_page(gfp_mask) alloc_pages(gfp_mask, 0) #define alloc_page_vma(gfp_mask, vma, addr) \ alloc_pages_vma(gfp_mask, 0, vma, addr, numa_node_id()) +#define alloc_page_vma_node(gfp_mask, vma, addr, node) \ + alloc_pages_vma(gfp_mask, 0, vma, addr, node) extern unsigned long __get_free_pages(gfp_t gfp_mask, unsigned int order); extern unsigned long get_zeroed_page(gfp_t gfp_mask); -- cgit v1.2.3 From 4ba8216cd90560bc402f52076f64d8546e8aefcb Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Tue, 25 Jan 2011 22:52:22 +0100 Subject: BKL: That's all, folks This removes the implementation of the big kernel lock, at last. A lot of people have worked on this in the past, I so the credit for this patch should be with everyone who participated in the hunt. The names on the Cc list are the people that were the most active in this, according to the recorded git history, in alphabetical order. Signed-off-by: Arnd Bergmann Acked-by: Alan Cox Cc: Alessio Igor Bogani Cc: Al Viro Cc: Andrew Hendry Cc: Andrew Morton Cc: Christoph Hellwig Cc: Eric W. Biederman Cc: Frederic Weisbecker Cc: Hans Verkuil Acked-by: Ingo Molnar Cc: Jan Blunck Cc: John Kacur Cc: Jonathan Corbet Cc: Linus Torvalds Cc: Matthew Wilcox Cc: Oliver Neukum Cc: Paul Menage Acked-by: Thomas Gleixner Cc: Trond Myklebust --- include/linux/hardirq.h | 9 +------ include/linux/smp_lock.h | 65 ------------------------------------------------ 2 files changed, 1 insertion(+), 73 deletions(-) delete mode 100644 include/linux/smp_lock.h (limited to 'include/linux') diff --git a/include/linux/hardirq.h b/include/linux/hardirq.h index 32f9fd6619b4..ba362171e8ae 100644 --- a/include/linux/hardirq.h +++ b/include/linux/hardirq.h @@ -93,13 +93,6 @@ */ #define in_nmi() (preempt_count() & NMI_MASK) -#if defined(CONFIG_PREEMPT) && defined(CONFIG_BKL) -# include -# define PREEMPT_INATOMIC_BASE (current->lock_depth >= 0) -#else -# define PREEMPT_INATOMIC_BASE 0 -#endif - #if defined(CONFIG_PREEMPT) # define PREEMPT_CHECK_OFFSET 1 #else @@ -113,7 +106,7 @@ * used in the general case to determine whether sleeping is possible. * Do not use in_atomic() in driver code. */ -#define in_atomic() ((preempt_count() & ~PREEMPT_ACTIVE) != PREEMPT_INATOMIC_BASE) +#define in_atomic() ((preempt_count() & ~PREEMPT_ACTIVE) != 0) /* * Check whether we were atomic before we did preempt_disable(): diff --git a/include/linux/smp_lock.h b/include/linux/smp_lock.h deleted file mode 100644 index 3a1988202731..000000000000 --- a/include/linux/smp_lock.h +++ /dev/null @@ -1,65 +0,0 @@ -#ifndef __LINUX_SMPLOCK_H -#define __LINUX_SMPLOCK_H - -#ifdef CONFIG_LOCK_KERNEL -#include - -extern int __lockfunc __reacquire_kernel_lock(void); -extern void __lockfunc __release_kernel_lock(void); - -/* - * Release/re-acquire global kernel lock for the scheduler - */ -#define release_kernel_lock(tsk) do { \ - if (unlikely((tsk)->lock_depth >= 0)) \ - __release_kernel_lock(); \ -} while (0) - -static inline int reacquire_kernel_lock(struct task_struct *task) -{ - if (unlikely(task->lock_depth >= 0)) - return __reacquire_kernel_lock(); - return 0; -} - -extern void __lockfunc -_lock_kernel(const char *func, const char *file, int line) -__acquires(kernel_lock); - -extern void __lockfunc -_unlock_kernel(const char *func, const char *file, int line) -__releases(kernel_lock); - -#define lock_kernel() do { \ - _lock_kernel(__func__, __FILE__, __LINE__); \ -} while (0) - -#define unlock_kernel() do { \ - _unlock_kernel(__func__, __FILE__, __LINE__); \ -} while (0) - -/* - * Various legacy drivers don't really need the BKL in a specific - * function, but they *do* need to know that the BKL became available. - * This function just avoids wrapping a bunch of lock/unlock pairs - * around code which doesn't really need it. - */ -static inline void cycle_kernel_lock(void) -{ - lock_kernel(); - unlock_kernel(); -} - -#else - -#ifdef CONFIG_BKL /* provoke build bug if not set */ -#define lock_kernel() -#define unlock_kernel() -#define cycle_kernel_lock() do { } while(0) -#endif /* CONFIG_BKL */ - -#define release_kernel_lock(task) do { } while(0) -#define reacquire_kernel_lock(task) 0 - -#endif /* CONFIG_LOCK_KERNEL */ -#endif /* __LINUX_SMPLOCK_H */ -- cgit v1.2.3 From b0c3130d69bda5cd91aa3b3f08e7878df49fde69 Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Thu, 3 Mar 2011 15:47:21 +0530 Subject: dw_dmac: Pass Channel Allocation Order from platform_data In SPEAr Platform channels 4-7 have more Fifo depth. So we must get better channel first. This patch introduces concept of channel allocation order in dw_dmac. If user doesn't pass anything or 0, than normal (ascending) channel allocation will follow, else channels will be allocated in descending order. Signed-off-by: Viresh Kumar Signed-off-by: Vinod Koul --- include/linux/dw_dmac.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/dw_dmac.h b/include/linux/dw_dmac.h index deec66b37180..a18c498984d9 100644 --- a/include/linux/dw_dmac.h +++ b/include/linux/dw_dmac.h @@ -22,6 +22,9 @@ struct dw_dma_platform_data { unsigned int nr_channels; bool is_private; +#define CHAN_ALLOCATION_ASCENDING 0 /* zero to seven */ +#define CHAN_ALLOCATION_DESCENDING 1 /* seven to zero */ + unsigned char chan_allocation_order; }; /** -- cgit v1.2.3 From 93317e8e35b77633d589fe0e132291195757d785 Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Thu, 3 Mar 2011 15:47:22 +0530 Subject: dw_dmac: Pass Channel Priority from platform_data In Synopsys designware, channel priority is programmable. This patch adds support for passing channel priority through platform data. By default Ascending channel priority will be followed, i.e. channel 0 will get highest priority and channel 7 will get lowest. Signed-off-by: Viresh Kumar Signed-off-by: Vinod Koul --- include/linux/dw_dmac.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/dw_dmac.h b/include/linux/dw_dmac.h index a18c498984d9..64c76da571ef 100644 --- a/include/linux/dw_dmac.h +++ b/include/linux/dw_dmac.h @@ -25,6 +25,9 @@ struct dw_dma_platform_data { #define CHAN_ALLOCATION_ASCENDING 0 /* zero to seven */ #define CHAN_ALLOCATION_DESCENDING 1 /* seven to zero */ unsigned char chan_allocation_order; +#define CHAN_PRIORITY_ASCENDING 0 /* chan0 highest */ +#define CHAN_PRIORITY_DESCENDING 1 /* chan7 highest */ + unsigned char chan_priority; }; /** @@ -70,7 +73,6 @@ struct dw_dma_slave { #define DWC_CFGH_DST_PER(x) ((x) << 11) /* Platform-configurable bits in CFG_LO */ -#define DWC_CFGL_PRIO(x) ((x) << 5) /* priority */ #define DWC_CFGL_LOCK_CH_XFER (0 << 12) /* scope of LOCK_CH */ #define DWC_CFGL_LOCK_CH_BLOCK (1 << 12) #define DWC_CFGL_LOCK_CH_XACT (2 << 12) -- cgit v1.2.3 From 59c22fc11d12b69da36c6585a38229863ba0bb16 Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Thu, 3 Mar 2011 15:47:23 +0530 Subject: dw_dmac: Changing type of src_master and dest_master to u8. src_master & dest_master don't required u32 as they have values limited to u8 only. Also their description is missing from doc style comment. This patch fixes above mentioned issues. Signed-off-by: Viresh Kumar Signed-off-by: Vinod Koul --- include/linux/dw_dmac.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/dw_dmac.h b/include/linux/dw_dmac.h index 64c76da571ef..3ba2f066ff46 100644 --- a/include/linux/dw_dmac.h +++ b/include/linux/dw_dmac.h @@ -53,6 +53,8 @@ enum dw_dma_slave_width { * @reg_width: peripheral register width * @cfg_hi: Platform-specific initializer for the CFG_HI register * @cfg_lo: Platform-specific initializer for the CFG_LO register + * @src_master: src master for transfers on allocated channel. + * @dst_master: dest master for transfers on allocated channel. */ struct dw_dma_slave { struct device *dma_dev; @@ -61,8 +63,8 @@ struct dw_dma_slave { enum dw_dma_slave_width reg_width; u32 cfg_hi; u32 cfg_lo; - int src_master; - int dst_master; + u8 src_master; + u8 dst_master; }; /* Platform-configurable bits in CFG_HI */ -- cgit v1.2.3 From ee66509d7f354eecb45ac99f21ea6aa8650dea7e Mon Sep 17 00:00:00 2001 From: Viresh KUMAR Date: Fri, 4 Mar 2011 15:42:51 +0530 Subject: dw_dmac: Allow src/dst msize & flow controller to be configured at runtime Msize or Burst Size is peripheral dependent in case of prep_slave_sg and cyclic_prep transfers, and in case of memcpy transfers it is platform dependent. So msize configuration must come from platform data. Also some peripherals (ex: JPEG), need to be flow controller for dma transfers, so this information in case of slave_sg & cyclic_prep transfers must come from platform data. Signed-off-by: Viresh Kumar Signed-off-by: Vinod Koul --- include/linux/dw_dmac.h | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) (limited to 'include/linux') diff --git a/include/linux/dw_dmac.h b/include/linux/dw_dmac.h index 3ba2f066ff46..6998d9376ef9 100644 --- a/include/linux/dw_dmac.h +++ b/include/linux/dw_dmac.h @@ -42,6 +42,30 @@ enum dw_dma_slave_width { DW_DMA_SLAVE_WIDTH_32BIT, }; +/* bursts size */ +enum dw_dma_msize { + DW_DMA_MSIZE_1, + DW_DMA_MSIZE_4, + DW_DMA_MSIZE_8, + DW_DMA_MSIZE_16, + DW_DMA_MSIZE_32, + DW_DMA_MSIZE_64, + DW_DMA_MSIZE_128, + DW_DMA_MSIZE_256, +}; + +/* flow controller */ +enum dw_dma_fc { + DW_DMA_FC_D_M2M, + DW_DMA_FC_D_M2P, + DW_DMA_FC_D_P2M, + DW_DMA_FC_D_P2P, + DW_DMA_FC_P_P2M, + DW_DMA_FC_SP_P2P, + DW_DMA_FC_P_M2P, + DW_DMA_FC_DP_P2P, +}; + /** * struct dw_dma_slave - Controller-specific information about a slave * @@ -55,6 +79,9 @@ enum dw_dma_slave_width { * @cfg_lo: Platform-specific initializer for the CFG_LO register * @src_master: src master for transfers on allocated channel. * @dst_master: dest master for transfers on allocated channel. + * @src_msize: src burst size. + * @dst_msize: dest burst size. + * @fc: flow controller for DMA transfer */ struct dw_dma_slave { struct device *dma_dev; @@ -65,6 +92,9 @@ struct dw_dma_slave { u32 cfg_lo; u8 src_master; u8 dst_master; + u8 src_msize; + u8 dst_msize; + u8 fc; }; /* Platform-configurable bits in CFG_HI */ -- cgit v1.2.3 From 550462378515a82279e07f12e2c105f617f112f8 Mon Sep 17 00:00:00 2001 From: Mayank Rana Date: Mon, 7 Mar 2011 10:28:42 +0530 Subject: serial: msm_serial_hs: Add MSM high speed UART driver This driver supports UART-DM HW on MSM platforms. It uses the on chip DMA to drive data transfers and has optional support for UART power management independent of Linux suspend/resume and wakeup from Rx. The driver was originally developed by Google. It is functionally equivalent to the version available at: http://android.git.kernel.org/?p=kernel/experimental.git the differences being: 1) Remove wakelocks and change unsupported DMA API. 2) Replace clock selection register codes by macros. 3) Fix checkpatch errors and add inline documentation. 4) Add runtime PM hooks for active power state transitions. 5) Handle error path and cleanup resources if required. CC: Nick Pelly Signed-off-by: Sankalp Bose Signed-off-by: Mayank Rana Signed-off-by: Greg Kroah-Hartman --- include/linux/platform_data/msm_serial_hs.h | 49 +++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 include/linux/platform_data/msm_serial_hs.h (limited to 'include/linux') diff --git a/include/linux/platform_data/msm_serial_hs.h b/include/linux/platform_data/msm_serial_hs.h new file mode 100644 index 000000000000..98a2046f8b31 --- /dev/null +++ b/include/linux/platform_data/msm_serial_hs.h @@ -0,0 +1,49 @@ +/* + * Copyright (C) 2008 Google, Inc. + * Author: Nick Pelly + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef __ASM_ARCH_MSM_SERIAL_HS_H +#define __ASM_ARCH_MSM_SERIAL_HS_H + +#include + +/* API to request the uart clock off or on for low power management + * Clients should call request_clock_off() when no uart data is expected, + * and must call request_clock_on() before any further uart data can be + * received. */ +extern void msm_hs_request_clock_off(struct uart_port *uport); +extern void msm_hs_request_clock_on(struct uart_port *uport); + +/** + * struct msm_serial_hs_platform_data + * @rx_wakeup_irq: Rx activity irq + * @rx_to_inject: extra character to be inserted to Rx tty on wakeup + * @inject_rx: 1 = insert rx_to_inject. 0 = do not insert extra character + * @exit_lpm_cb: function called before every Tx transaction + * + * This is an optional structure required for UART Rx GPIO IRQ based + * wakeup from low power state. UART wakeup can be triggered by RX activity + * (using a wakeup GPIO on the UART RX pin). This should only be used if + * there is not a wakeup GPIO on the UART CTS, and the first RX byte is + * known (eg., with the Bluetooth Texas Instruments HCILL protocol), + * since the first RX byte will always be lost. RTS will be asserted even + * while the UART is clocked off in this mode of operation. + */ +struct msm_serial_hs_platform_data { + int rx_wakeup_irq; + unsigned char inject_rx_on_wakeup; + char rx_to_inject; + void (*exit_lpm_cb)(struct uart_port *); +}; + +#endif -- cgit v1.2.3 From 9b37596a2e860404503a3f2a6513db60c296bfdc Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Mon, 7 Mar 2011 11:11:52 -0500 Subject: USB: move usbcore away from hcd->state The hcd->state variable is a disaster. It's not clearly owned by either usbcore or the host controller drivers, and they both change it from time to time, potentially stepping on each other's toes. It's not protected by any locks. And there's no mechanism to prevent it from going through an invalid transition. This patch (as1451) takes a first step toward fixing these problems. As it turns out, usbcore uses hcd->state for essentially only two things: checking whether the controller's root hub is running and checking whether the controller has died. Therefore the patch adds two new atomic bitflags to the hcd structure, to store these pieces of information. The new flags are used only by usbcore, and a private spinlock prevents invalid combinations (a dead controller's root hub cannot be running). The patch does not change the places where usbcore sets hcd->state, since HCDs may depend on them. Furthermore, there is one place in usb_hcd_irq() where usbcore still must use hcd->state: An HCD's interrupt handler can implicitly indicate that the controller died by setting hcd->state to HC_STATE_HALT. Nevertheless, the new code is a big improvement over the current code. The patch makes one other change. The hcd_bus_suspend() and hcd_bus_resume() routines now check first whether the host controller has died; if it has then they return immediately without calling the HCD's bus_suspend or bus_resume methods. This fixes the major problem reported in Bugzilla #29902: The system fails to suspend after a host controller dies during system resume. Signed-off-by: Alan Stern Tested-by: Alex Terekhov CC: Signed-off-by: Greg Kroah-Hartman --- include/linux/usb/hcd.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h index 9cfba4f2457b..8b65068c6af9 100644 --- a/include/linux/usb/hcd.h +++ b/include/linux/usb/hcd.h @@ -99,6 +99,8 @@ struct usb_hcd { #define HCD_FLAG_POLL_RH 2 /* poll for rh status? */ #define HCD_FLAG_POLL_PENDING 3 /* status has changed? */ #define HCD_FLAG_WAKEUP_PENDING 4 /* root hub is resuming? */ +#define HCD_FLAG_RH_RUNNING 5 /* root hub is running? */ +#define HCD_FLAG_DEAD 6 /* controller has died? */ /* The flags can be tested using these macros; they are likely to * be slightly faster than test_bit(). @@ -108,6 +110,8 @@ struct usb_hcd { #define HCD_POLL_RH(hcd) ((hcd)->flags & (1U << HCD_FLAG_POLL_RH)) #define HCD_POLL_PENDING(hcd) ((hcd)->flags & (1U << HCD_FLAG_POLL_PENDING)) #define HCD_WAKEUP_PENDING(hcd) ((hcd)->flags & (1U << HCD_FLAG_WAKEUP_PENDING)) +#define HCD_RH_RUNNING(hcd) ((hcd)->flags & (1U << HCD_FLAG_RH_RUNNING)) +#define HCD_DEAD(hcd) ((hcd)->flags & (1U << HCD_FLAG_DEAD)) /* Flags that get set only during HCD registration or removal. */ unsigned rh_registered:1;/* is root hub registered? */ -- cgit v1.2.3 From dfb2130c453c2c6d36b5e0f39eca289cbdbb631d Mon Sep 17 00:00:00 2001 From: Pavankumar Kondeti Date: Fri, 4 Mar 2011 22:45:02 +0530 Subject: USB: Rename "msm72k_otg.c" to "msm_otg.c" This driver is used across all MSM SoCs. Hence give a generic name. All Functions and strutures are also using "msm_otg" as prefix. Signed-off-by: Pavankumar Kondeti Signed-off-by: Greg Kroah-Hartman --- include/linux/usb/msm_hsusb.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/usb/msm_hsusb.h b/include/linux/usb/msm_hsusb.h index 3675e03b1539..3657403eac18 100644 --- a/include/linux/usb/msm_hsusb.h +++ b/include/linux/usb/msm_hsusb.h @@ -55,7 +55,7 @@ enum otg_control_type { /** * struct msm_otg_platform_data - platform device data - * for msm72k_otg driver. + * for msm_otg driver. * @phy_init_seq: PHY configuration sequence. val, reg pairs * terminated by -1. * @vbus_power: VBUS power on/off routine. -- cgit v1.2.3 From 256ee435b9a9ee9cca69602fe8046b27ca99fbee Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Tue, 1 Mar 2011 07:06:12 +0000 Subject: netdevice: Convert printk to pr_info in netif_tx_stop_queue This allows any caller to be prefaced by any specific pr_fmt to better identify which device driver is using this function inappropriately. Add terminating newline. Signed-off-by: Joe Perches Signed-off-by: David S. Miller --- include/linux/netdevice.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 8be4056ad251..71563e7b2bfb 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -1765,8 +1765,7 @@ static inline void netif_tx_wake_all_queues(struct net_device *dev) static inline void netif_tx_stop_queue(struct netdev_queue *dev_queue) { if (WARN_ON(!dev_queue)) { - printk(KERN_INFO "netif_stop_queue() cannot be called before " - "register_netdev()"); + pr_info("netif_stop_queue() cannot be called before register_netdev()\n"); return; } set_bit(__QUEUE_STATE_XOFF, &dev_queue->state); -- cgit v1.2.3 From f1a304e7941cc76353363a139cbb6a4b1ca7c737 Mon Sep 17 00:00:00 2001 From: Pratheesh Gangadhar Date: Sat, 5 Mar 2011 04:30:17 +0530 Subject: UIO: add PRUSS UIO driver support This patch implements PRUSS (Programmable Real-time Unit Sub System) UIO driver which exports SOC resources associated with PRUSS like I/O, memories and IRQs to user space. PRUSS is dual 32-bit RISC processors which is efficient in performing embedded tasks that require manipulation of packed memory mapped data structures and handling system events that have tight real time constraints. This driver is currently supported on Texas Instruments DA850, AM18xx and OMAP-L138 devices. For example, PRUSS runs firmware for real-time critical industrial communication data link layer and communicates with application stack running in user space via shared memory and IRQs. Signed-off-by: Pratheesh Gangadhar Reviewed-by: Thomas Gleixner Reviewed-by: Arnd Bergmann Signed-off-by: Hans J. Koch Signed-off-by: Greg Kroah-Hartman --- include/linux/platform_data/uio_pruss.h | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 include/linux/platform_data/uio_pruss.h (limited to 'include/linux') diff --git a/include/linux/platform_data/uio_pruss.h b/include/linux/platform_data/uio_pruss.h new file mode 100644 index 000000000000..f39140aabc6f --- /dev/null +++ b/include/linux/platform_data/uio_pruss.h @@ -0,0 +1,25 @@ +/* + * include/linux/platform_data/uio_pruss.h + * + * Platform data for uio_pruss driver + * + * Copyright (C) 2010-11 Texas Instruments Incorporated - http://www.ti.com/ + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation version 2. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef _UIO_PRUSS_H_ +#define _UIO_PRUSS_H_ + +/* To configure the PRUSS INTC base offset for UIO driver */ +struct uio_pruss_pdata { + u32 pintc_base; +}; +#endif /* _UIO_PRUSS_H_ */ -- cgit v1.2.3 From 633e804e89464d3875e59de1959a53f9041d3094 Mon Sep 17 00:00:00 2001 From: David Howells Date: Mon, 7 Mar 2011 15:05:51 +0000 Subject: KEYS: Add an RCU payload dereference macro Add an RCU payload dereference macro as this seems to be a common piece of code amongst key types that use RCU referenced payloads. Signed-off-by: David Howells Signed-off-by: Mimi Zohar Signed-off-by: James Morris --- include/linux/key.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/key.h b/include/linux/key.h index 3db0adce1fda..a6b1edcffc34 100644 --- a/include/linux/key.h +++ b/include/linux/key.h @@ -275,6 +275,10 @@ static inline key_serial_t key_serial(struct key *key) return key ? key->serial : 0; } +#define rcu_dereference_key(KEY) \ + (rcu_dereference_protected((KEY)->payload.rcudata, \ + rwsem_is_locked(&((struct key *)(KEY))->sem))) + #ifdef CONFIG_SYSCTL extern ctl_table key_sysctls[]; #endif -- cgit v1.2.3 From b9fffa3877a3ebbe0a5ad5a247358e2f7df15b24 Mon Sep 17 00:00:00 2001 From: David Howells Date: Mon, 7 Mar 2011 15:05:59 +0000 Subject: KEYS: Add a key type op to permit the key description to be vetted Add a key type operation to permit the key type to vet the description of a new key that key_alloc() is about to allocate. The operation may reject the description if it wishes with an error of its choosing. If it does this, the key will not be allocated. Signed-off-by: David Howells Reviewed-by: Mimi Zohar Signed-off-by: James Morris --- include/linux/key-type.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/key-type.h b/include/linux/key-type.h index 65833d4d5998..fc8525e838b7 100644 --- a/include/linux/key-type.h +++ b/include/linux/key-type.h @@ -41,6 +41,9 @@ struct key_type { */ size_t def_datalen; + /* vet a description */ + int (*vet_description)(const char *description); + /* instantiate a key of this type * - this method should call key_payload_reserve() to determine if the * user's quota will hold the payload -- cgit v1.2.3 From fdd1b94581782a2ddf9124414e5b7a5f48ce2f9c Mon Sep 17 00:00:00 2001 From: David Howells Date: Mon, 7 Mar 2011 15:06:09 +0000 Subject: KEYS: Add a new keyctl op to reject a key with a specified error code Add a new keyctl op to reject a key with a specified error code. This works much the same as negating a key, and so keyctl_negate_key() is made a special case of keyctl_reject_key(). The difference is that keyctl_negate_key() selects ENOKEY as the error to be reported. Typically the key would be rejected with EKEYEXPIRED, EKEYREVOKED or EKEYREJECTED, but this is not mandatory. Signed-off-by: David Howells Signed-off-by: James Morris --- include/linux/key-type.h | 11 ++++++++++- include/linux/key.h | 1 + include/linux/keyctl.h | 1 + 3 files changed, 12 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/key-type.h b/include/linux/key-type.h index fc8525e838b7..9efd081bb31e 100644 --- a/include/linux/key-type.h +++ b/include/linux/key-type.h @@ -105,11 +105,20 @@ extern int key_instantiate_and_link(struct key *key, size_t datalen, struct key *keyring, struct key *instkey); -extern int key_negate_and_link(struct key *key, +extern int key_reject_and_link(struct key *key, unsigned timeout, + unsigned error, struct key *keyring, struct key *instkey); extern void complete_request_key(struct key_construction *cons, int error); +static inline int key_negate_and_link(struct key *key, + unsigned timeout, + struct key *keyring, + struct key *instkey) +{ + return key_reject_and_link(key, timeout, ENOKEY, keyring, instkey); +} + #endif /* CONFIG_KEYS */ #endif /* _LINUX_KEY_TYPE_H */ diff --git a/include/linux/key.h b/include/linux/key.h index a6b1edcffc34..b2bb01719561 100644 --- a/include/linux/key.h +++ b/include/linux/key.h @@ -170,6 +170,7 @@ struct key { struct list_head link; unsigned long x[2]; void *p[2]; + int reject_error; } type_data; /* key data diff --git a/include/linux/keyctl.h b/include/linux/keyctl.h index bd383f1944fb..7022974def0c 100644 --- a/include/linux/keyctl.h +++ b/include/linux/keyctl.h @@ -53,5 +53,6 @@ #define KEYCTL_ASSUME_AUTHORITY 16 /* assume request_key() authorisation */ #define KEYCTL_GET_SECURITY 17 /* get key security label */ #define KEYCTL_SESSION_TO_PARENT 18 /* apply session keyring to parent process */ +#define KEYCTL_REJECT 19 /* reject a partially constructed key */ #endif /* _LINUX_KEYCTL_H */ -- cgit v1.2.3 From ee009e4a0d4555ed522a631bae9896399674f064 Mon Sep 17 00:00:00 2001 From: David Howells Date: Mon, 7 Mar 2011 15:06:20 +0000 Subject: KEYS: Add an iovec version of KEYCTL_INSTANTIATE Add a keyctl op (KEYCTL_INSTANTIATE_IOV) that is like KEYCTL_INSTANTIATE, but takes an iovec array and concatenates the data in-kernel into one buffer. Since the KEYCTL_INSTANTIATE copies the data anyway, this isn't too much of a problem. Signed-off-by: David Howells Signed-off-by: James Morris --- include/linux/keyctl.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/keyctl.h b/include/linux/keyctl.h index 7022974def0c..9b0b865ce622 100644 --- a/include/linux/keyctl.h +++ b/include/linux/keyctl.h @@ -54,5 +54,6 @@ #define KEYCTL_GET_SECURITY 17 /* get key security label */ #define KEYCTL_SESSION_TO_PARENT 18 /* apply session keyring to parent process */ #define KEYCTL_REJECT 19 /* reject a partially constructed key */ +#define KEYCTL_INSTANTIATE_IOV 20 /* instantiate a partially constructed key */ #endif /* _LINUX_KEYCTL_H */ -- cgit v1.2.3 From 6247e086188dd2ba5bfd64f9a876fe42b0cf39fb Mon Sep 17 00:00:00 2001 From: Yi Zou Date: Tue, 1 Feb 2011 07:22:06 +0000 Subject: net: add ndo_fcoe_ddp_target() to support FCoE DDP in target mode The Fiber Channel over Ethernet (FCoE) Direct Data Placement (DDP) can also be used for FCoE target, where the DDP used for read I/O on an initiator can be used on an FCoE target to speed up the write I/O to the target from the initiator. The added ndo_fcoe_ddp_target() works in the similar way as the existing ndo_fcoe_ddp_setup() to allow the underlying hardware set up the DDP context accordingly when it gets called from the FCoE target implementation on top the existing Open-FCoE fcoe/libfc protocol stack so without losing the ability to provide DDP for read I/O as an initiator, it can also provide DDP offload to the write I/O coming from the initiator as a target. Signed-off-by: Yi Zou Signed-off-by: Kiran Patil Tested-by: Kavindya Deegala Signed-off-by: Jeff Kirsher --- include/linux/netdevice.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 71563e7b2bfb..6bd5d460b7c1 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -871,6 +871,10 @@ struct net_device_ops { unsigned int sgc); int (*ndo_fcoe_ddp_done)(struct net_device *dev, u16 xid); + int (*ndo_fcoe_ddp_target)(struct net_device *dev, + u16 xid, + struct scatterlist *sgl, + unsigned int sgc); #define NETDEV_FCOE_WWNN 0 #define NETDEV_FCOE_WWPN 1 int (*ndo_fcoe_get_wwn)(struct net_device *dev, -- cgit v1.2.3 From f0c9f242f947a37675a883deca7f722cac935b0e Mon Sep 17 00:00:00 2001 From: Ryusuke Konishi Date: Thu, 20 Jan 2011 02:09:52 +0900 Subject: nilfs2: use common file attribute macros Replaces uses of own inode flags (i.e. NILFS_SECRM_FL, NILFS_UNRM_FL, NILFS_COMPR_FL, and so forth) with common inode flags, and removes the own flag declarations. Signed-off-by: Ryusuke Konishi --- include/linux/nilfs2_fs.h | 20 -------------------- 1 file changed, 20 deletions(-) (limited to 'include/linux') diff --git a/include/linux/nilfs2_fs.h b/include/linux/nilfs2_fs.h index 227e49dd5720..fdcd1bc7f61f 100644 --- a/include/linux/nilfs2_fs.h +++ b/include/linux/nilfs2_fs.h @@ -41,26 +41,6 @@ #include #include -/* - * Inode flags stored in nilfs_inode and on-memory nilfs inode - * - * We define these flags based on ext2-fs because of the - * compatibility reason; to avoid problems in chattr(1) - */ -#define NILFS_SECRM_FL 0x00000001 /* Secure deletion */ -#define NILFS_UNRM_FL 0x00000002 /* Undelete */ -#define NILFS_SYNC_FL 0x00000008 /* Synchronous updates */ -#define NILFS_IMMUTABLE_FL 0x00000010 /* Immutable file */ -#define NILFS_APPEND_FL 0x00000020 /* writes to file may only append */ -#define NILFS_NODUMP_FL 0x00000040 /* do not dump file */ -#define NILFS_NOATIME_FL 0x00000080 /* do not update atime */ -/* Reserved for compression usage... */ -#define NILFS_NOTAIL_FL 0x00008000 /* file tail should not be merged */ -#define NILFS_DIRSYNC_FL 0x00010000 /* dirsync behaviour */ - -#define NILFS_FL_USER_VISIBLE 0x0003DFFF /* User visible flags */ -#define NILFS_FL_USER_MODIFIABLE 0x000380FF /* User modifiable flags */ - #define NILFS_INODE_BMAP_SIZE 7 /** -- cgit v1.2.3 From ae191838b0251d73b9d0a7254c6938406f5f6320 Mon Sep 17 00:00:00 2001 From: Ryusuke Konishi Date: Fri, 4 Feb 2011 01:19:38 +0900 Subject: nilfs2: optimize rec_len functions This is a similar change to those in ext2/ext3 codebase (commit 40a063f6691ce937 and a4ae3094869f18e2, respectively). The addition of 64k block capability in the rec_len_from_disk and rec_len_to_disk functions added a bit of math overhead which slows down file create workloads needlessly when the architecture cannot even support 64k blocks. This will cut the corner. Signed-off-by: Ryusuke Konishi --- include/linux/nilfs2_fs.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nilfs2_fs.h b/include/linux/nilfs2_fs.h index fdcd1bc7f61f..3a65e5aa2d76 100644 --- a/include/linux/nilfs2_fs.h +++ b/include/linux/nilfs2_fs.h @@ -326,17 +326,21 @@ static inline unsigned nilfs_rec_len_from_disk(__le16 dlen) { unsigned len = le16_to_cpu(dlen); +#if !defined(__KERNEL__) || (PAGE_CACHE_SIZE >= 65536) if (len == NILFS_MAX_REC_LEN) return 1 << 16; +#endif return len; } static inline __le16 nilfs_rec_len_to_disk(unsigned len) { +#if !defined(__KERNEL__) || (PAGE_CACHE_SIZE >= 65536) if (len == (1 << 16)) return cpu_to_le16(NILFS_MAX_REC_LEN); else if (len > (1 << 16)) BUG(); +#endif return cpu_to_le16(len); } -- cgit v1.2.3 From be667377a8b8cd73e1b923f33fb5be4034aa4bfa Mon Sep 17 00:00:00 2001 From: Ryusuke Konishi Date: Sat, 5 Mar 2011 00:19:32 +0900 Subject: nilfs2: record used amount of each checkpoint in checkpoint list This records the number of used blocks per checkpoint in each checkpoint entry of cpfile. Even though userland tools can get the block count via nilfs_get_cpinfo ioctl, it was not updated by the nilfs2 kernel code. This fixes the issue and makes it available for userland tools to calculate used amount per checkpoint. Signed-off-by: Ryusuke Konishi Cc: Jiro SEKIBA --- include/linux/nilfs2_fs.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/nilfs2_fs.h b/include/linux/nilfs2_fs.h index 3a65e5aa2d76..ae33ac2db62d 100644 --- a/include/linux/nilfs2_fs.h +++ b/include/linux/nilfs2_fs.h @@ -216,8 +216,10 @@ struct nilfs_super_block { * If there is a bit set in the incompatible feature set that the kernel * doesn't know about, it should refuse to mount the filesystem. */ +#define NILFS_FEATURE_COMPAT_RO_BLOCK_COUNT 0x00000001ULL + #define NILFS_FEATURE_COMPAT_SUPP 0ULL -#define NILFS_FEATURE_COMPAT_RO_SUPP 0ULL +#define NILFS_FEATURE_COMPAT_RO_SUPP NILFS_FEATURE_COMPAT_RO_BLOCK_COUNT #define NILFS_FEATURE_INCOMPAT_SUPP 0ULL /* @@ -509,7 +511,7 @@ struct nilfs_checkpoint { __le64 cp_create; __le64 cp_nblk_inc; __le64 cp_inodes_count; - __le64 cp_blocks_count; /* Reserved (might be deleted) */ + __le64 cp_blocks_count; /* Do not change the byte offset of ifile inode. To keep the compatibility of the disk format, -- cgit v1.2.3 From dfef6dcd35cb4a251f6322ca9b2c06f0bb1aa1f4 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Tue, 8 Mar 2011 01:25:28 -0500 Subject: unfuck proc_sysctl ->d_compare() a) struct inode is not going to be freed under ->d_compare(); however, the thing PROC_I(inode)->sysctl points to just might. Fortunately, it's enough to make freeing that sucker delayed, provided that we don't step on its ->unregistering, clear the pointer to it in PROC_I(inode) before dropping the reference and check if it's NULL in ->d_compare(). b) I'm not sure that we *can* walk into NULL inode here (we recheck dentry->seq between verifying that it's still hashed / fetching dentry->d_inode and passing it to ->d_compare() and there's no negative hashed dentries in /proc/sys/*), but if we can walk into that, we really should not have ->d_compare() return 0 on it! Said that, I really suspect that this check can be simply killed. Nick? Signed-off-by: Al Viro --- include/linux/sysctl.h | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h index 7bb5cb64f3b8..bb7c2b086fa4 100644 --- a/include/linux/sysctl.h +++ b/include/linux/sysctl.h @@ -25,6 +25,7 @@ #include #include #include +#include struct completion; @@ -1037,10 +1038,15 @@ struct ctl_table_root { struct ctl_table trees. */ struct ctl_table_header { - struct ctl_table *ctl_table; - struct list_head ctl_entry; - int used; - int count; + union { + struct { + struct ctl_table *ctl_table; + struct list_head ctl_entry; + int used; + int count; + }; + struct rcu_head rcu; + }; struct completion *unregistering; struct ctl_table *ctl_table_arg; struct ctl_table_root *root; -- cgit v1.2.3 From df677140281beb608f6748c341af7612f7bfe7a0 Mon Sep 17 00:00:00 2001 From: "Martin K. Petersen" Date: Tue, 8 Mar 2011 08:28:01 +0100 Subject: block: biovec_slab vs. CONFIG_BLK_DEV_INTEGRITY The block integrity subsystem no longer uses the bio_vec slabs so this code can safely be compiled in. Signed-off-by: Martin K. Petersen Signed-off-by: Jens Axboe --- include/linux/bio.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/bio.h b/include/linux/bio.h index 35dcdb3589bc..ce33e6868a2f 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -304,7 +304,6 @@ struct biovec_slab { }; extern struct bio_set *fs_bio_set; -extern struct biovec_slab bvec_slabs[BIOVEC_NR_POOLS] __read_mostly; /* * a small number of entries is fine, not going to be performance critical. -- cgit v1.2.3 From 30b542ef453e6832ff682170b2db95d7bca2fe70 Mon Sep 17 00:00:00 2001 From: Artem Bityutskiy Date: Sun, 30 Jan 2011 18:37:33 +0200 Subject: UBI: incorporate maximum write size Incorporate MTD write buffer size into UBI device information because UBIFS needs this field. UBI does not use it ATM, just provides to upper layers in 'struct ubi_device_info'. Signed-off-by: Artem Bityutskiy --- include/linux/mtd/ubi.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mtd/ubi.h b/include/linux/mtd/ubi.h index b31bd9e9bca3..36c70593ae62 100644 --- a/include/linux/mtd/ubi.h +++ b/include/linux/mtd/ubi.h @@ -117,17 +117,36 @@ struct ubi_volume_info { * @ubi_num: ubi device number * @leb_size: logical eraseblock size on this UBI device * @min_io_size: minimal I/O unit size + * @max_write_size: maximum amount of bytes the underlying flash can write at a + * time (MTD write buffer size) * @ro_mode: if this device is in read-only mode * @cdev: UBI character device major and minor numbers * * Note, @leb_size is the logical eraseblock size offered by the UBI device. * Volumes of this UBI device may have smaller logical eraseblock size if their * alignment is not equivalent to %1. + * + * The @max_write_size field describes flash write maximum write unit. For + * example, NOR flash allows for changing individual bytes, so @min_io_size is + * %1. However, it does not mean than NOR flash has to write data byte-by-byte. + * Instead, CFI NOR flashes have a write-buffer of, e.g., 64 bytes, and when + * writing large chunks of data, they write 64-bytes at a time. Obviously, this + * improves write throughput. + * + * Also, the MTD device may have N interleaved (striped) flash chips + * underneath, in which case @min_io_size can be physical min. I/O size of + * single flash chip, while @max_write_size can be N * @min_io_size. + * + * The @max_write_size field is always greater or equivalent to @min_io_size. + * E.g., some NOR flashes may have (@min_io_size = 1, @max_write_size = 64). In + * contrast, NAND flashes usually have @min_io_size = @max_write_size = NAND + * page size. */ struct ubi_device_info { int ubi_num; int leb_size; int min_io_size; + int max_write_size; int ro_mode; dev_t cdev; }; -- cgit v1.2.3 From f43ec882b8b65de0ebde2e1ad52e8de0349d83ae Mon Sep 17 00:00:00 2001 From: Artem Bityutskiy Date: Mon, 14 Feb 2011 13:36:54 +0200 Subject: UBI: provide LEB offset information Provide the LEB offset information in the UBI device information data structure. This piece of information is required by UBIFS to find out what are the LEB offsets which are aligned to the max. write size. If LEB offset not aligned to max. write size, then UBIFS has to take this into account to write more optimally. Signed-off-by: Artem Bityutskiy --- include/linux/mtd/ubi.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mtd/ubi.h b/include/linux/mtd/ubi.h index 36c70593ae62..84854edf4436 100644 --- a/include/linux/mtd/ubi.h +++ b/include/linux/mtd/ubi.h @@ -116,6 +116,8 @@ struct ubi_volume_info { * struct ubi_device_info - UBI device description data structure. * @ubi_num: ubi device number * @leb_size: logical eraseblock size on this UBI device + * @leb_start: starting offset of logical eraseblocks within physical + * eraseblocks * @min_io_size: minimal I/O unit size * @max_write_size: maximum amount of bytes the underlying flash can write at a * time (MTD write buffer size) @@ -145,6 +147,7 @@ struct ubi_volume_info { struct ubi_device_info { int ubi_num; int leb_size; + int leb_start; int min_io_size; int max_write_size; int ro_mode; -- cgit v1.2.3 From 997772884036e6e121de39322179989154437d9f Mon Sep 17 00:00:00 2001 From: Stanislaw Gruszka Date: Mon, 7 Mar 2011 09:58:33 +0100 Subject: debugobjects: Add hint for better object identification In complex subsystems like mac80211 structures can contain several timers and work structs, so identifying a specific instance from the call trace and object type output of debugobjects can be hard. Allow the subsystems which support debugobjects to provide a hint function. This function returns a pointer to a kernel address (preferrably the objects callback function) which is printed along with the debugobjects type. Add hint methods for timer_list, work_struct and hrtimer. [ tglx: Massaged changelog, made it compile ] Signed-off-by: Stanislaw Gruszka LKML-Reference: <20110307085809.GA9334@redhat.com> Signed-off-by: Thomas Gleixner --- include/linux/debugobjects.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/debugobjects.h b/include/linux/debugobjects.h index 597692f1fc8d..65970b811e22 100644 --- a/include/linux/debugobjects.h +++ b/include/linux/debugobjects.h @@ -34,7 +34,10 @@ struct debug_obj { /** * struct debug_obj_descr - object type specific debug description structure + * * @name: name of the object typee + * @debug_hint: function returning address, which have associated + * kernel symbol, to allow identify the object * @fixup_init: fixup function, which is called when the init check * fails * @fixup_activate: fixup function, which is called when the activate check @@ -46,7 +49,7 @@ struct debug_obj { */ struct debug_obj_descr { const char *name; - + void *(*debug_hint) (void *addr); int (*fixup_init) (void *addr, enum debug_obj_state state); int (*fixup_activate) (void *addr, enum debug_obj_state state); int (*fixup_destroy) (void *addr, enum debug_obj_state state); -- cgit v1.2.3 From 750912fa366312e9c5bc83eab352898a26750401 Mon Sep 17 00:00:00 2001 From: David Sharp Date: Wed, 8 Dec 2010 13:46:47 -0800 Subject: tracing: Add an 'overwrite' trace_option. Add an "overwrite" trace_option for ftrace to control whether the buffer should be overwritten on overflow or not. The default remains to overwrite old events when the buffer is full. This patch adds the option to instead discard newest events when the buffer is full. This is useful to get a snapshot of traces just after enabling traces. Dropping the current event is also a simpler code path. Signed-off-by: David Sharp LKML-Reference: <1291844807-15481-1-git-send-email-dhsharp@google.com> Signed-off-by: Steven Rostedt --- include/linux/ring_buffer.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ring_buffer.h b/include/linux/ring_buffer.h index 8d3a2486544d..ab38ac80b0f9 100644 --- a/include/linux/ring_buffer.h +++ b/include/linux/ring_buffer.h @@ -100,6 +100,8 @@ void ring_buffer_free(struct ring_buffer *buffer); int ring_buffer_resize(struct ring_buffer *buffer, unsigned long size); +void ring_buffer_change_overwrite(struct ring_buffer *buffer, int val); + struct ring_buffer_event *ring_buffer_lock_reserve(struct ring_buffer *buffer, unsigned long length); int ring_buffer_unlock_commit(struct ring_buffer *buffer, -- cgit v1.2.3 From f44f7f96a20af16f6f12e1c995576d6becf5f57b Mon Sep 17 00:00:00 2001 From: John Stultz Date: Mon, 21 Feb 2011 22:58:51 -0800 Subject: RTC: Initialize kernel state from RTC Mark Brown pointed out a corner case: that RTC alarms should be allowed to be persistent across reboots if the hardware supported it. The rework of the generic layer to virtualize the RTC alarm virtualized much of the alarm handling, and removed the code used to read the alarm time from the hardware. Mark noted if we want the alarm to be persistent across reboots, we need to re-read the alarm value into the virtualized generic layer at boot up, so that the generic layer properly exposes that value. This patch restores much of the earlier removed rtc_read_alarm code and wires it in so that we set the kernel's alarm value to what we find in the hardware at boot time. NOTE: Not all hardware supports persistent RTC alarm state across system reset. rtc-cmos for example will keep the alarm time, but disables the AIE mode irq. Applications should not expect the RTC alarm to be valid after a system reset. We will preserve what we can, to represent the hardware state at boot, but its not guarenteed. Further, in the future, with multiplexed RTC alarms, the soonest alarm to fire may not be the one set via the /dev/rt ioctls. So an application may set the alarm with RTC_ALM_SET, but after a reset find that RTC_ALM_READ returns an earlier time. Again, we preserve what we can, but applications should not expect the RTC alarm state to persist across a system reset. Big thanks to Mark for pointing out the issue! Thanks also to Marcelo for helping think through the solution. CC: Mark Brown CC: Marcelo Roberto Jimenez CC: Thomas Gleixner CC: Alessandro Zummo CC: rtc-linux@googlegroups.com Reported-by: Mark Brown Signed-off-by: John Stultz --- include/linux/rtc.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/rtc.h b/include/linux/rtc.h index 89c3e5182991..db3832d5f280 100644 --- a/include/linux/rtc.h +++ b/include/linux/rtc.h @@ -227,6 +227,7 @@ extern void rtc_device_unregister(struct rtc_device *rtc); extern int rtc_read_time(struct rtc_device *rtc, struct rtc_time *tm); extern int rtc_set_time(struct rtc_device *rtc, struct rtc_time *tm); extern int rtc_set_mmss(struct rtc_device *rtc, unsigned long secs); +int __rtc_read_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm); extern int rtc_read_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alrm); extern int rtc_set_alarm(struct rtc_device *rtc, -- cgit v1.2.3 From 80d4bb515b78f38738f3378fd1be6039063ab040 Mon Sep 17 00:00:00 2001 From: John Stultz Date: Thu, 3 Feb 2011 11:34:50 -0800 Subject: RTC: Cleanup rtc_class_ops->irq_set_state With PIE mode interrupts now emulated in generic code via an hrtimer, no one calls rtc_class_ops->irq_set_state(), so this patch removes it along with driver implementations. CC: Thomas Gleixner CC: Alessandro Zummo CC: Marcelo Roberto Jimenez CC: rtc-linux@googlegroups.com Signed-off-by: John Stultz --- include/linux/rtc.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/rtc.h b/include/linux/rtc.h index db3832d5f280..0e2063acc260 100644 --- a/include/linux/rtc.h +++ b/include/linux/rtc.h @@ -148,7 +148,6 @@ struct rtc_class_ops { int (*set_alarm)(struct device *, struct rtc_wkalrm *); int (*proc)(struct device *, struct seq_file *); int (*set_mmss)(struct device *, unsigned long secs); - int (*irq_set_state)(struct device *, int enabled); int (*irq_set_freq)(struct device *, int freq); int (*read_callback)(struct device *, int data); int (*alarm_irq_enable)(struct device *, unsigned int enabled); -- cgit v1.2.3 From 696160fec162601d06940862b5b3aa4460344c1b Mon Sep 17 00:00:00 2001 From: John Stultz Date: Thu, 3 Feb 2011 12:02:07 -0800 Subject: RTC: Cleanup rtc_class_ops->irq_set_freq() With the generic rtc code now emulating PIE mode irqs via an hrtimer, no one calls the rtc_class_ops->irq_set_freq call. This patch removes the hook and deletes the driver functions if no one else calls them. CC: Thomas Gleixner CC: Alessandro Zummo CC: Marcelo Roberto Jimenez CC: rtc-linux@googlegroups.com Signed-off-by: John Stultz --- include/linux/rtc.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/rtc.h b/include/linux/rtc.h index 0e2063acc260..741a51cc4460 100644 --- a/include/linux/rtc.h +++ b/include/linux/rtc.h @@ -133,7 +133,6 @@ extern struct class *rtc_class; * The (current) exceptions are mostly filesystem hooks: * - the proc() hook for procfs * - non-ioctl() chardev hooks: open(), release(), read_callback() - * - periodic irq calls: irq_set_state(), irq_set_freq() * * REVISIT those periodic irq calls *do* have ops_lock when they're * issued through ioctl() ... @@ -148,7 +147,6 @@ struct rtc_class_ops { int (*set_alarm)(struct device *, struct rtc_wkalrm *); int (*proc)(struct device *, struct seq_file *); int (*set_mmss)(struct device *, unsigned long secs); - int (*irq_set_freq)(struct device *, int freq); int (*read_callback)(struct device *, int data); int (*alarm_irq_enable)(struct device *, unsigned int enabled); int (*update_irq_enable)(struct device *, unsigned int enabled); -- cgit v1.2.3 From 51ba60c5bb3b0f71bee26404ddc22d8e4109e88a Mon Sep 17 00:00:00 2001 From: John Stultz Date: Thu, 3 Feb 2011 12:13:50 -0800 Subject: RTC: Cleanup rtc_class_ops->update_irq_enable() Now that the generic code handles UIE mode irqs via periodic alarm interrupts, no one calls the rtc_class_ops->update_irq_enable() method anymore. This patch removes the driver hooks and implementations of update_irq_enable if no one else is calling it. CC: Thomas Gleixner CC: Alessandro Zummo CC: Marcelo Roberto Jimenez CC: rtc-linux@googlegroups.com Signed-off-by: John Stultz --- include/linux/rtc.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/rtc.h b/include/linux/rtc.h index 741a51cc4460..2ca7e8a78060 100644 --- a/include/linux/rtc.h +++ b/include/linux/rtc.h @@ -149,7 +149,6 @@ struct rtc_class_ops { int (*set_mmss)(struct device *, unsigned long secs); int (*read_callback)(struct device *, int data); int (*alarm_irq_enable)(struct device *, unsigned int enabled); - int (*update_irq_enable)(struct device *, unsigned int enabled); }; #define RTC_DEVICE_NAME_SIZE 20 -- cgit v1.2.3 From acaf7df610ff3faf1778ce40d601fc3dd4a41b40 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?R=C3=A9mi=20Denis-Courmont?= Date: Tue, 8 Mar 2011 22:44:11 +0000 Subject: Phonet: provide pipe socket option to retrieve the pipe identifier MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit User-space sometimes needs this information. In particular, the GPRS context or the AT commands pipe setups may use the pipe handle as a reference. This removes the settable pipe handle with CONFIG_PHONET_PIPECTRLR. It did not handle error cases correctly. Furthermore, the kernel *could* implement a smart scheme for allocating handles (if ever needed), but userspace really cannot. Signed-off-by: Rémi Denis-Courmont Signed-off-by: David S. Miller --- include/linux/phonet.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/phonet.h b/include/linux/phonet.h index 26c8df786918..32a0965da953 100644 --- a/include/linux/phonet.h +++ b/include/linux/phonet.h @@ -36,7 +36,7 @@ /* Socket options for SOL_PNPIPE level */ #define PNPIPE_ENCAP 1 #define PNPIPE_IFINDEX 2 -#define PNPIPE_PIPE_HANDLE 3 +#define PNPIPE_HANDLE 3 #define PNPIPE_ENABLE 4 /* unused slot */ -- cgit v1.2.3 From a015f6f49968c330b236ca2f6c2170820414f922 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?R=C3=A9mi=20Denis-Courmont?= Date: Tue, 8 Mar 2011 22:44:13 +0000 Subject: Phonet: kill the ST-Ericsson pipe controller Kconfig MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This is now a run-time choice so that a single kernel can support both old and new generation ISI modems. Support for manually enabling the pipe flow is removed as it did not work properly, does not fit well with the socket API, and I am not aware of any use at the moment. Signed-off-by: Rémi Denis-Courmont Signed-off-by: David S. Miller --- include/linux/phonet.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/phonet.h b/include/linux/phonet.h index 32a0965da953..6fb13841db45 100644 --- a/include/linux/phonet.h +++ b/include/linux/phonet.h @@ -37,8 +37,6 @@ #define PNPIPE_ENCAP 1 #define PNPIPE_IFINDEX 2 #define PNPIPE_HANDLE 3 -#define PNPIPE_ENABLE 4 -/* unused slot */ #define PNADDR_ANY 0 #define PNADDR_BROADCAST 0xFC -- cgit v1.2.3 From 80751e2b8ffcbbe065e850d943301aa1ab219599 Mon Sep 17 00:00:00 2001 From: Bing Zhao Date: Mon, 7 Mar 2011 11:14:23 -0800 Subject: ieee80211: add IEEE80211_COUNTRY_STRING_LEN definition and make use of it in wireless drivers Signed-off-by: Bing Zhao Signed-off-by: John W. Linville --- include/linux/ieee80211.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h index 294169e31364..2d1c6117d92c 100644 --- a/include/linux/ieee80211.h +++ b/include/linux/ieee80211.h @@ -1325,6 +1325,9 @@ enum { /* Although the spec says 8 I'm seeing 6 in practice */ #define IEEE80211_COUNTRY_IE_MIN_LEN 6 +/* The Country String field of the element shall be 3 octets in length */ +#define IEEE80211_COUNTRY_STRING_LEN 3 + /* * For regulatory extension stuff see IEEE 802.11-2007 * Annex I (page 1141) and Annex J (page 1147). Also -- cgit v1.2.3 From 2f4e1b3970973bbb57cc3a3b9d67e67c1c648c37 Mon Sep 17 00:00:00 2001 From: Mario Schuknecht Date: Wed, 9 Mar 2011 14:08:09 -0800 Subject: tcp: ioctl type SIOCOUTQNSD returns amount of data not sent In contrast to SIOCOUTQ which returns the amount of data sent but not yet acknowledged plus data not yet sent this patch only returns the data not sent. For various methods of live streaming bitrate control it may be helpful to know how much data are in the tcp outqueue are not sent yet. Signed-off-by: Mario Schuknecht Signed-off-by: Steffen Sledz Signed-off-by: David S. Miller --- include/linux/sockios.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/sockios.h b/include/linux/sockios.h index 241f179347d9..7997a506ad41 100644 --- a/include/linux/sockios.h +++ b/include/linux/sockios.h @@ -22,7 +22,7 @@ /* Linux-specific socket ioctls */ #define SIOCINQ FIONREAD -#define SIOCOUTQ TIOCOUTQ +#define SIOCOUTQ TIOCOUTQ /* output queue size (not sent + not acked) */ /* Routing table calls. */ #define SIOCADDRT 0x890B /* add routing table entry */ @@ -83,6 +83,8 @@ #define SIOCWANDEV 0x894A /* get/set netdev parameters */ +#define SIOCOUTQNSD 0x894B /* output queue size (not sent only) */ + /* ARP cache control calls. */ /* 0x8950 - 0x8952 * obsolete calls, don't re-use */ #define SIOCDARP 0x8953 /* delete ARP table entry */ -- cgit v1.2.3 From 8909c9ad8ff03611c9c96c9a92656213e4bb495b Mon Sep 17 00:00:00 2001 From: Vasiliy Kulikov Date: Wed, 2 Mar 2011 00:33:13 +0300 Subject: net: don't allow CAP_NET_ADMIN to load non-netdev kernel modules Since a8f80e8ff94ecba629542d9b4b5f5a8ee3eb565c any process with CAP_NET_ADMIN may load any module from /lib/modules/. This doesn't mean that CAP_NET_ADMIN is a superset of CAP_SYS_MODULE as modules are limited to /lib/modules/**. However, CAP_NET_ADMIN capability shouldn't allow anybody load any module not related to networking. This patch restricts an ability of autoloading modules to netdev modules with explicit aliases. This fixes CVE-2011-1019. Arnd Bergmann suggested to leave untouched the old pre-v2.6.32 behavior of loading netdev modules by name (without any prefix) for processes with CAP_SYS_MODULE to maintain the compatibility with network scripts that use autoloading netdev modules by aliases like "eth0", "wlan0". Currently there are only three users of the feature in the upstream kernel: ipip, ip_gre and sit. root@albatros:~# capsh --drop=$(seq -s, 0 11),$(seq -s, 13 34) -- root@albatros:~# grep Cap /proc/$$/status CapInh: 0000000000000000 CapPrm: fffffff800001000 CapEff: fffffff800001000 CapBnd: fffffff800001000 root@albatros:~# modprobe xfs FATAL: Error inserting xfs (/lib/modules/2.6.38-rc6-00001-g2bf4ca3/kernel/fs/xfs/xfs.ko): Operation not permitted root@albatros:~# lsmod | grep xfs root@albatros:~# ifconfig xfs xfs: error fetching interface information: Device not found root@albatros:~# lsmod | grep xfs root@albatros:~# lsmod | grep sit root@albatros:~# ifconfig sit sit: error fetching interface information: Device not found root@albatros:~# lsmod | grep sit root@albatros:~# ifconfig sit0 sit0 Link encap:IPv6-in-IPv4 NOARP MTU:1480 Metric:1 root@albatros:~# lsmod | grep sit sit 10457 0 tunnel4 2957 1 sit For CAP_SYS_MODULE module loading is still relaxed: root@albatros:~# grep Cap /proc/$$/status CapInh: 0000000000000000 CapPrm: ffffffffffffffff CapEff: ffffffffffffffff CapBnd: ffffffffffffffff root@albatros:~# ifconfig xfs xfs: error fetching interface information: Device not found root@albatros:~# lsmod | grep xfs xfs 745319 0 Reference: https://lkml.org/lkml/2011/2/24/203 Signed-off-by: Vasiliy Kulikov Signed-off-by: Michael Tokarev Acked-by: David S. Miller Acked-by: Kees Cook Signed-off-by: James Morris --- include/linux/netdevice.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index d971346b0340..71caf7a5e6c6 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -2392,6 +2392,9 @@ extern int netdev_notice(const struct net_device *dev, const char *format, ...) extern int netdev_info(const struct net_device *dev, const char *format, ...) __attribute__ ((format (printf, 2, 3))); +#define MODULE_ALIAS_NETDEV(device) \ + MODULE_ALIAS("netdev-" device) + #if defined(DEBUG) #define netdev_dbg(__dev, format, args...) \ netdev_printk(KERN_DEBUG, __dev, format, ##args) -- cgit v1.2.3 From 684adca4f84365ca327e06dba696b62de7a79eca Mon Sep 17 00:00:00 2001 From: Stephen Rothwell Date: Thu, 10 Mar 2011 11:14:17 +1100 Subject: sysctl: the include of rcupdate.h is only needed in the kernel Fixes this build-check error: include/linux/sysctl.h:28: included file 'linux/rcupdate.h' is not exported Signed-off-by: Stephen Rothwell Signed-off-by: Linus Torvalds --- include/linux/sysctl.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h index bb7c2b086fa4..11684d9e6bd2 100644 --- a/include/linux/sysctl.h +++ b/include/linux/sysctl.h @@ -25,7 +25,6 @@ #include #include #include -#include struct completion; @@ -931,6 +930,7 @@ enum #ifdef __KERNEL__ #include +#include /* For the /proc/sys support */ struct ctl_table; -- cgit v1.2.3 From 3cca6dc1c81e2407928dc4c6105252146fd3924f Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Wed, 2 Mar 2011 11:08:00 -0500 Subject: block: add API for delaying work/request_fn a little bit Currently we use plugging for that, but as plugging is going away, we need an alternative mechanism. Signed-off-by: Jens Axboe --- include/linux/blkdev.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index e3ee74fc5903..f55b2a8b6610 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -300,6 +300,11 @@ struct request_queue unsigned long unplug_delay; /* After this many jiffies */ struct work_struct unplug_work; + /* + * Delayed queue handling + */ + struct delayed_work delay_work; + struct backing_dev_info backing_dev_info; /* @@ -677,6 +682,7 @@ extern int blk_insert_cloned_request(struct request_queue *q, extern void blk_plug_device(struct request_queue *); extern void blk_plug_device_unlocked(struct request_queue *); extern int blk_remove_plug(struct request_queue *); +extern void blk_delay_queue(struct request_queue *, unsigned long); extern void blk_recount_segments(struct request_queue *, struct bio *); extern int scsi_cmd_ioctl(struct request_queue *, struct gendisk *, fmode_t, unsigned int, void __user *); -- cgit v1.2.3 From 73c101011926c5832e6e141682180c4debe2cf45 Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Tue, 8 Mar 2011 13:19:51 +0100 Subject: block: initial patch for on-stack per-task plugging This patch adds support for creating a queuing context outside of the queue itself. This enables us to batch up pieces of IO before grabbing the block device queue lock and submitting them to the IO scheduler. The context is created on the stack of the process and assigned in the task structure, so that we can auto-unplug it if we hit a schedule event. The current queue plugging happens implicitly if IO is submitted to an empty device, yet callers have to remember to unplug that IO when they are going to wait for it. This is an ugly API and has caused bugs in the past. Additionally, it requires hacks in the vm (->sync_page() callback) to handle that logic. By switching to an explicit plugging scheme we make the API a lot nicer and can get rid of the ->sync_page() hack in the vm. Signed-off-by: Jens Axboe --- include/linux/blk_types.h | 2 ++ include/linux/blkdev.h | 42 ++++++++++++++++++++++++++++++++++++++++++ include/linux/elevator.h | 1 + include/linux/sched.h | 6 ++++++ 4 files changed, 51 insertions(+) (limited to 'include/linux') diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h index dddedfc0af81..16b286473042 100644 --- a/include/linux/blk_types.h +++ b/include/linux/blk_types.h @@ -152,6 +152,7 @@ enum rq_flag_bits { __REQ_IO_STAT, /* account I/O stat */ __REQ_MIXED_MERGE, /* merge of different types, fail separately */ __REQ_SECURE, /* secure discard (used with __REQ_DISCARD) */ + __REQ_ON_PLUG, /* on plug list */ __REQ_NR_BITS, /* stops here */ }; @@ -193,5 +194,6 @@ enum rq_flag_bits { #define REQ_IO_STAT (1 << __REQ_IO_STAT) #define REQ_MIXED_MERGE (1 << __REQ_MIXED_MERGE) #define REQ_SECURE (1 << __REQ_SECURE) +#define REQ_ON_PLUG (1 << __REQ_ON_PLUG) #endif /* __LINUX_BLK_TYPES_H */ diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index f55b2a8b6610..5873037eeb91 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -871,6 +871,31 @@ struct request_queue *blk_alloc_queue(gfp_t); struct request_queue *blk_alloc_queue_node(gfp_t, int); extern void blk_put_queue(struct request_queue *); +struct blk_plug { + unsigned long magic; + struct list_head list; + unsigned int should_sort; +}; + +extern void blk_start_plug(struct blk_plug *); +extern void blk_finish_plug(struct blk_plug *); +extern void __blk_flush_plug(struct task_struct *, struct blk_plug *); + +static inline void blk_flush_plug(struct task_struct *tsk) +{ + struct blk_plug *plug = tsk->plug; + + if (unlikely(plug)) + __blk_flush_plug(tsk, plug); +} + +static inline bool blk_needs_flush_plug(struct task_struct *tsk) +{ + struct blk_plug *plug = tsk->plug; + + return plug && !list_empty(&plug->list); +} + /* * tag stuff */ @@ -1294,6 +1319,23 @@ static inline long nr_blockdev_pages(void) return 0; } +static inline void blk_start_plug(struct list_head *list) +{ +} + +static inline void blk_finish_plug(struct list_head *list) +{ +} + +static inline void blk_flush_plug(struct task_struct *tsk) +{ +} + +static inline bool blk_needs_flush_plug(struct task_struct *tsk) +{ + return false; +} + #endif /* CONFIG_BLOCK */ #endif diff --git a/include/linux/elevator.h b/include/linux/elevator.h index 39b68edb388d..8857cf9adbb7 100644 --- a/include/linux/elevator.h +++ b/include/linux/elevator.h @@ -105,6 +105,7 @@ extern void elv_add_request(struct request_queue *, struct request *, int, int); extern void __elv_add_request(struct request_queue *, struct request *, int, int); extern void elv_insert(struct request_queue *, struct request *, int); extern int elv_merge(struct request_queue *, struct request **, struct bio *); +extern int elv_try_merge(struct request *, struct bio *); extern void elv_merge_requests(struct request_queue *, struct request *, struct request *); extern void elv_merged_request(struct request_queue *, struct request *, int); diff --git a/include/linux/sched.h b/include/linux/sched.h index 777d8a5ed06b..96ac22643742 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -99,6 +99,7 @@ struct robust_list_head; struct bio_list; struct fs_struct; struct perf_event_context; +struct blk_plug; /* * List of flags we want to share for kernel threads, @@ -1429,6 +1430,11 @@ struct task_struct { /* stacked block device info */ struct bio_list *bio_list; +#ifdef CONFIG_BLOCK +/* stack plugging */ + struct blk_plug *plug; +#endif + /* VM state */ struct reclaim_state *reclaim_state; -- cgit v1.2.3 From 7eaceaccab5f40bbfda044629a6298616aeaed50 Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Thu, 10 Mar 2011 08:52:07 +0100 Subject: block: remove per-queue plugging Code has been converted over to the new explicit on-stack plugging, and delay users have been converted to use the new API for that. So lets kill off the old plugging along with aops->sync_page(). Signed-off-by: Jens Axboe --- include/linux/backing-dev.h | 16 ---------------- include/linux/blkdev.h | 31 +++++++------------------------ include/linux/buffer_head.h | 1 - include/linux/device-mapper.h | 5 ----- include/linux/elevator.h | 7 ++----- include/linux/fs.h | 1 - include/linux/pagemap.h | 12 ------------ include/linux/swap.h | 2 -- 8 files changed, 9 insertions(+), 66 deletions(-) (limited to 'include/linux') diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h index 4ce34fa937d4..96f4094b706d 100644 --- a/include/linux/backing-dev.h +++ b/include/linux/backing-dev.h @@ -66,8 +66,6 @@ struct backing_dev_info { unsigned int capabilities; /* Device capabilities */ congested_fn *congested_fn; /* Function pointer if device is md/dm */ void *congested_data; /* Pointer to aux data for congested func */ - void (*unplug_io_fn)(struct backing_dev_info *, struct page *); - void *unplug_io_data; char *name; @@ -251,7 +249,6 @@ int bdi_set_max_ratio(struct backing_dev_info *bdi, unsigned int max_ratio); extern struct backing_dev_info default_backing_dev_info; extern struct backing_dev_info noop_backing_dev_info; -void default_unplug_io_fn(struct backing_dev_info *bdi, struct page *page); int writeback_in_progress(struct backing_dev_info *bdi); @@ -336,17 +333,4 @@ static inline int bdi_sched_wait(void *word) return 0; } -static inline void blk_run_backing_dev(struct backing_dev_info *bdi, - struct page *page) -{ - if (bdi && bdi->unplug_io_fn) - bdi->unplug_io_fn(bdi, page); -} - -static inline void blk_run_address_space(struct address_space *mapping) -{ - if (mapping) - blk_run_backing_dev(mapping->backing_dev_info, NULL); -} - #endif /* _LINUX_BACKING_DEV_H */ diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 5873037eeb91..64ab2a1bb167 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -196,7 +196,6 @@ typedef void (request_fn_proc) (struct request_queue *q); typedef int (make_request_fn) (struct request_queue *q, struct bio *bio); typedef int (prep_rq_fn) (struct request_queue *, struct request *); typedef void (unprep_rq_fn) (struct request_queue *, struct request *); -typedef void (unplug_fn) (struct request_queue *); struct bio_vec; struct bvec_merge_data { @@ -279,7 +278,6 @@ struct request_queue make_request_fn *make_request_fn; prep_rq_fn *prep_rq_fn; unprep_rq_fn *unprep_rq_fn; - unplug_fn *unplug_fn; merge_bvec_fn *merge_bvec_fn; softirq_done_fn *softirq_done_fn; rq_timed_out_fn *rq_timed_out_fn; @@ -292,14 +290,6 @@ struct request_queue sector_t end_sector; struct request *boundary_rq; - /* - * Auto-unplugging state - */ - struct timer_list unplug_timer; - int unplug_thresh; /* After this many requests */ - unsigned long unplug_delay; /* After this many jiffies */ - struct work_struct unplug_work; - /* * Delayed queue handling */ @@ -399,14 +389,13 @@ struct request_queue #define QUEUE_FLAG_ASYNCFULL 4 /* write queue has been filled */ #define QUEUE_FLAG_DEAD 5 /* queue being torn down */ #define QUEUE_FLAG_REENTER 6 /* Re-entrancy avoidance */ -#define QUEUE_FLAG_PLUGGED 7 /* queue is plugged */ -#define QUEUE_FLAG_ELVSWITCH 8 /* don't use elevator, just do FIFO */ -#define QUEUE_FLAG_BIDI 9 /* queue supports bidi requests */ -#define QUEUE_FLAG_NOMERGES 10 /* disable merge attempts */ -#define QUEUE_FLAG_SAME_COMP 11 /* force complete on same CPU */ -#define QUEUE_FLAG_FAIL_IO 12 /* fake timeout */ -#define QUEUE_FLAG_STACKABLE 13 /* supports request stacking */ -#define QUEUE_FLAG_NONROT 14 /* non-rotational device (SSD) */ +#define QUEUE_FLAG_ELVSWITCH 7 /* don't use elevator, just do FIFO */ +#define QUEUE_FLAG_BIDI 8 /* queue supports bidi requests */ +#define QUEUE_FLAG_NOMERGES 9 /* disable merge attempts */ +#define QUEUE_FLAG_SAME_COMP 10 /* force complete on same CPU */ +#define QUEUE_FLAG_FAIL_IO 11 /* fake timeout */ +#define QUEUE_FLAG_STACKABLE 12 /* supports request stacking */ +#define QUEUE_FLAG_NONROT 13 /* non-rotational device (SSD) */ #define QUEUE_FLAG_VIRT QUEUE_FLAG_NONROT /* paravirt device */ #define QUEUE_FLAG_IO_STAT 15 /* do IO stats */ #define QUEUE_FLAG_DISCARD 16 /* supports DISCARD */ @@ -484,7 +473,6 @@ static inline void queue_flag_clear(unsigned int flag, struct request_queue *q) __clear_bit(flag, &q->queue_flags); } -#define blk_queue_plugged(q) test_bit(QUEUE_FLAG_PLUGGED, &(q)->queue_flags) #define blk_queue_tagged(q) test_bit(QUEUE_FLAG_QUEUED, &(q)->queue_flags) #define blk_queue_stopped(q) test_bit(QUEUE_FLAG_STOPPED, &(q)->queue_flags) #define blk_queue_nomerges(q) test_bit(QUEUE_FLAG_NOMERGES, &(q)->queue_flags) @@ -679,9 +667,6 @@ extern int blk_rq_prep_clone(struct request *rq, struct request *rq_src, extern void blk_rq_unprep_clone(struct request *rq); extern int blk_insert_cloned_request(struct request_queue *q, struct request *rq); -extern void blk_plug_device(struct request_queue *); -extern void blk_plug_device_unlocked(struct request_queue *); -extern int blk_remove_plug(struct request_queue *); extern void blk_delay_queue(struct request_queue *, unsigned long); extern void blk_recount_segments(struct request_queue *, struct bio *); extern int scsi_cmd_ioctl(struct request_queue *, struct gendisk *, fmode_t, @@ -726,7 +711,6 @@ extern int blk_execute_rq(struct request_queue *, struct gendisk *, struct request *, int); extern void blk_execute_rq_nowait(struct request_queue *, struct gendisk *, struct request *, int, rq_end_io_fn *); -extern void blk_unplug(struct request_queue *q); static inline struct request_queue *bdev_get_queue(struct block_device *bdev) { @@ -863,7 +847,6 @@ extern struct backing_dev_info *blk_get_backing_dev_info(struct block_device *bd extern int blk_rq_map_sg(struct request_queue *, struct request *, struct scatterlist *); extern void blk_dump_rq_flags(struct request *, char *); -extern void generic_unplug_device(struct request_queue *); extern long nr_blockdev_pages(void); int blk_get_queue(struct request_queue *); diff --git a/include/linux/buffer_head.h b/include/linux/buffer_head.h index 68d1fe7b877c..f5df23561b96 100644 --- a/include/linux/buffer_head.h +++ b/include/linux/buffer_head.h @@ -219,7 +219,6 @@ int generic_cont_expand_simple(struct inode *inode, loff_t size); int block_commit_write(struct page *page, unsigned from, unsigned to); int block_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf, get_block_t get_block); -void block_sync_page(struct page *); sector_t generic_block_bmap(struct address_space *, sector_t, get_block_t *); int block_truncate_page(struct address_space *, loff_t, get_block_t *); int nobh_write_begin(struct address_space *, loff_t, unsigned, unsigned, diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h index 272496d1fae4..e2768834f397 100644 --- a/include/linux/device-mapper.h +++ b/include/linux/device-mapper.h @@ -285,11 +285,6 @@ void dm_table_add_target_callbacks(struct dm_table *t, struct dm_target_callback */ int dm_table_complete(struct dm_table *t); -/* - * Unplug all devices in a table. - */ -void dm_table_unplug_all(struct dm_table *t); - /* * Table reference counting. */ diff --git a/include/linux/elevator.h b/include/linux/elevator.h index 8857cf9adbb7..ec6f72b84477 100644 --- a/include/linux/elevator.h +++ b/include/linux/elevator.h @@ -20,7 +20,6 @@ typedef void (elevator_bio_merged_fn) (struct request_queue *, typedef int (elevator_dispatch_fn) (struct request_queue *, int); typedef void (elevator_add_req_fn) (struct request_queue *, struct request *); -typedef int (elevator_queue_empty_fn) (struct request_queue *); typedef struct request *(elevator_request_list_fn) (struct request_queue *, struct request *); typedef void (elevator_completed_req_fn) (struct request_queue *, struct request *); typedef int (elevator_may_queue_fn) (struct request_queue *, int); @@ -46,7 +45,6 @@ struct elevator_ops elevator_activate_req_fn *elevator_activate_req_fn; elevator_deactivate_req_fn *elevator_deactivate_req_fn; - elevator_queue_empty_fn *elevator_queue_empty_fn; elevator_completed_req_fn *elevator_completed_req_fn; elevator_request_list_fn *elevator_former_req_fn; @@ -101,8 +99,8 @@ struct elevator_queue */ extern void elv_dispatch_sort(struct request_queue *, struct request *); extern void elv_dispatch_add_tail(struct request_queue *, struct request *); -extern void elv_add_request(struct request_queue *, struct request *, int, int); -extern void __elv_add_request(struct request_queue *, struct request *, int, int); +extern void elv_add_request(struct request_queue *, struct request *, int); +extern void __elv_add_request(struct request_queue *, struct request *, int); extern void elv_insert(struct request_queue *, struct request *, int); extern int elv_merge(struct request_queue *, struct request **, struct bio *); extern int elv_try_merge(struct request *, struct bio *); @@ -112,7 +110,6 @@ extern void elv_merged_request(struct request_queue *, struct request *, int); extern void elv_bio_merged(struct request_queue *q, struct request *, struct bio *); extern void elv_requeue_request(struct request_queue *, struct request *); -extern int elv_queue_empty(struct request_queue *); extern struct request *elv_former_request(struct request_queue *, struct request *); extern struct request *elv_latter_request(struct request_queue *, struct request *); extern int elv_register_queue(struct request_queue *q); diff --git a/include/linux/fs.h b/include/linux/fs.h index bd3215940c37..9f2cf69911b8 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -583,7 +583,6 @@ typedef int (*read_actor_t)(read_descriptor_t *, struct page *, struct address_space_operations { int (*writepage)(struct page *page, struct writeback_control *wbc); int (*readpage)(struct file *, struct page *); - void (*sync_page)(struct page *); /* Write back some dirty pages from this mapping. */ int (*writepages)(struct address_space *, struct writeback_control *); diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index 9c66e994540f..e112b8db2f3c 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -298,7 +298,6 @@ static inline pgoff_t linear_page_index(struct vm_area_struct *vma, extern void __lock_page(struct page *page); extern int __lock_page_killable(struct page *page); -extern void __lock_page_nosync(struct page *page); extern int __lock_page_or_retry(struct page *page, struct mm_struct *mm, unsigned int flags); extern void unlock_page(struct page *page); @@ -341,17 +340,6 @@ static inline int lock_page_killable(struct page *page) return 0; } -/* - * lock_page_nosync should only be used if we can't pin the page's inode. - * Doesn't play quite so well with block device plugging. - */ -static inline void lock_page_nosync(struct page *page) -{ - might_sleep(); - if (!trylock_page(page)) - __lock_page_nosync(page); -} - /* * lock_page_or_retry - Lock the page, unless this would block and the * caller indicated that it can handle a retry. diff --git a/include/linux/swap.h b/include/linux/swap.h index 4d559325d919..9ee321833b21 100644 --- a/include/linux/swap.h +++ b/include/linux/swap.h @@ -299,8 +299,6 @@ extern void mem_cgroup_get_shmem_target(struct inode *inode, pgoff_t pgoff, struct page **pagep, swp_entry_t *ent); #endif -extern void swap_unplug_io_fn(struct backing_dev_info *, struct page *); - #ifdef CONFIG_SWAP /* linux/mm/page_io.c */ extern int swap_readpage(struct page *); -- cgit v1.2.3 From 721a9602e6607417c6bc15b18e97a2f35266c690 Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Wed, 9 Mar 2011 11:56:30 +0100 Subject: block: kill off REQ_UNPLUG With the plugging now being explicitly controlled by the submitter, callers need not pass down unplugging hints to the block layer. If they want to unplug, it's because they manually plugged on their own - in which case, they should just unplug at will. Signed-off-by: Jens Axboe --- include/linux/blk_types.h | 2 -- include/linux/fs.h | 28 +++++++++------------------- 2 files changed, 9 insertions(+), 21 deletions(-) (limited to 'include/linux') diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h index 16b286473042..be50d9e70a7d 100644 --- a/include/linux/blk_types.h +++ b/include/linux/blk_types.h @@ -128,7 +128,6 @@ enum rq_flag_bits { __REQ_NOIDLE, /* don't anticipate more IO after this one */ /* bio only flags */ - __REQ_UNPLUG, /* unplug the immediately after submission */ __REQ_RAHEAD, /* read ahead, can fail anytime */ __REQ_THROTTLED, /* This bio has already been subjected to * throttling rules. Don't do it again. */ @@ -172,7 +171,6 @@ enum rq_flag_bits { REQ_NOIDLE | REQ_FLUSH | REQ_FUA) #define REQ_CLONE_MASK REQ_COMMON_MASK -#define REQ_UNPLUG (1 << __REQ_UNPLUG) #define REQ_RAHEAD (1 << __REQ_RAHEAD) #define REQ_THROTTLED (1 << __REQ_THROTTLED) diff --git a/include/linux/fs.h b/include/linux/fs.h index 9f2cf69911b8..543e226ea6a3 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -135,16 +135,10 @@ struct inodes_stat_t { * block layer could (in theory) choose to ignore this * request if it runs into resource problems. * WRITE A normal async write. Device will be plugged. - * WRITE_SYNC_PLUG Synchronous write. Identical to WRITE, but passes down + * WRITE_SYNC Synchronous write. Identical to WRITE, but passes down * the hint that someone will be waiting on this IO - * shortly. The device must still be unplugged explicitly, - * WRITE_SYNC_PLUG does not do this as we could be - * submitting more writes before we actually wait on any - * of them. - * WRITE_SYNC Like WRITE_SYNC_PLUG, but also unplugs the device - * immediately after submission. The write equivalent - * of READ_SYNC. - * WRITE_ODIRECT_PLUG Special case write for O_DIRECT only. + * shortly. The write equivalent of READ_SYNC. + * WRITE_ODIRECT Special case write for O_DIRECT only. * WRITE_FLUSH Like WRITE_SYNC but with preceding cache flush. * WRITE_FUA Like WRITE_SYNC but data is guaranteed to be on * non-volatile media on completion. @@ -160,18 +154,14 @@ struct inodes_stat_t { #define WRITE RW_MASK #define READA RWA_MASK -#define READ_SYNC (READ | REQ_SYNC | REQ_UNPLUG) +#define READ_SYNC (READ | REQ_SYNC) #define READ_META (READ | REQ_META) -#define WRITE_SYNC_PLUG (WRITE | REQ_SYNC | REQ_NOIDLE) -#define WRITE_SYNC (WRITE | REQ_SYNC | REQ_NOIDLE | REQ_UNPLUG) -#define WRITE_ODIRECT_PLUG (WRITE | REQ_SYNC) +#define WRITE_SYNC (WRITE | REQ_SYNC | REQ_NOIDLE) +#define WRITE_ODIRECT (WRITE | REQ_SYNC) #define WRITE_META (WRITE | REQ_META) -#define WRITE_FLUSH (WRITE | REQ_SYNC | REQ_NOIDLE | REQ_UNPLUG | \ - REQ_FLUSH) -#define WRITE_FUA (WRITE | REQ_SYNC | REQ_NOIDLE | REQ_UNPLUG | \ - REQ_FUA) -#define WRITE_FLUSH_FUA (WRITE | REQ_SYNC | REQ_NOIDLE | REQ_UNPLUG | \ - REQ_FLUSH | REQ_FUA) +#define WRITE_FLUSH (WRITE | REQ_SYNC | REQ_NOIDLE | REQ_FLUSH) +#define WRITE_FUA (WRITE | REQ_SYNC | REQ_NOIDLE | REQ_FUA) +#define WRITE_FLUSH_FUA (WRITE | REQ_SYNC | REQ_NOIDLE | REQ_FLUSH | REQ_FUA) #define SEL_IN 1 #define SEL_OUT 2 -- cgit v1.2.3 From 4d3cf1bc557dc8b88e1cabf1980b3baa3380a641 Mon Sep 17 00:00:00 2001 From: Jiro SEKIBA Date: Thu, 10 Mar 2011 16:54:15 +0900 Subject: nilfs2: move NILFS_SUPER_MAGIC to linux/magic.h move NILFS_SUPER_MAGIC macro to linux/magic.h from linux/nilfs2_fs.h in the same manner as other filesystem magic number defined in the file. Signed-off-by: Jiro SEKIBA Signed-off-by: Ryusuke Konishi --- include/linux/magic.h | 1 + include/linux/nilfs2_fs.h | 2 +- 2 files changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/magic.h b/include/linux/magic.h index 62730ea2b56e..248930efdd31 100644 --- a/include/linux/magic.h +++ b/include/linux/magic.h @@ -23,6 +23,7 @@ #define XENFS_SUPER_MAGIC 0xabba1974 #define EXT4_SUPER_MAGIC 0xEF53 #define BTRFS_SUPER_MAGIC 0x9123683E +#define NILFS_SUPER_MAGIC 0x3434 #define HPFS_SUPER_MAGIC 0xf995e849 #define ISOFS_SUPER_MAGIC 0x9660 #define JFFS2_SUPER_MAGIC 0x72b6 diff --git a/include/linux/nilfs2_fs.h b/include/linux/nilfs2_fs.h index ae33ac2db62d..8768c469e93e 100644 --- a/include/linux/nilfs2_fs.h +++ b/include/linux/nilfs2_fs.h @@ -40,6 +40,7 @@ #include #include +#include #define NILFS_INODE_BMAP_SIZE 7 @@ -242,7 +243,6 @@ struct nilfs_super_block { #define NILFS_USER_INO 11 /* Fisrt user's file inode number */ #define NILFS_SB_OFFSET_BYTES 1024 /* byte offset of nilfs superblock */ -#define NILFS_SUPER_MAGIC 0x3434 /* NILFS filesystem magic number */ #define NILFS_SEG_MIN_BLOCKS 16 /* Minimum number of blocks in a full segment */ -- cgit v1.2.3 From d4894f3ea7375dd9492b5d3d2ecb0b6e4bdb604e Mon Sep 17 00:00:00 2001 From: Matt Carlson Date: Wed, 9 Mar 2011 16:58:21 +0000 Subject: tg3: Add code to verify RODATA checksum of VPD This patch adds code to verify the checksum stored in the "RV" info keyword of the RODATA VPD section. Signed-off-by: Matt Carlson Reviewed-by: Michael Chan Signed-off-by: David S. Miller --- include/linux/pci.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/pci.h b/include/linux/pci.h index 559d02897075..ff5bccb87136 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1479,6 +1479,7 @@ void pci_request_acs(void); #define PCI_VPD_RO_KEYWORD_PARTNO "PN" #define PCI_VPD_RO_KEYWORD_MFR_ID "MN" #define PCI_VPD_RO_KEYWORD_VENDOR0 "V0" +#define PCI_VPD_RO_KEYWORD_CHKSUM "RV" /** * pci_vpd_lrdt_size - Extracts the Large Resource Data Type length -- cgit v1.2.3 From 422028b1ca4c07995af82a18abced022ff4c296c Mon Sep 17 00:00:00 2001 From: Philipp Reisner Date: Wed, 27 Oct 2010 11:12:07 +0200 Subject: drbd: New configuration parameters for dealing with network congestion net { on_congestion {block|pull-ahead|disconnect}; congestion-fill {sectors}; congestion-extents {al-extents}; } Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd.h | 7 +++++++ include/linux/drbd_limits.h | 9 +++++++++ include/linux/drbd_nl.h | 3 +++ 3 files changed, 19 insertions(+) (limited to 'include/linux') diff --git a/include/linux/drbd.h b/include/linux/drbd.h index ef44c7a0638c..03a08baabf11 100644 --- a/include/linux/drbd.h +++ b/include/linux/drbd.h @@ -96,6 +96,12 @@ enum drbd_on_no_data { OND_SUSPEND_IO }; +enum drbd_on_congestion { + OC_BLOCK, + OC_PULL_AHEAD, + OC_DISCONNECT, +}; + /* KEEP the order, do not delete or insert. Only append. */ enum drbd_ret_codes { ERR_CODE_BASE = 100, @@ -146,6 +152,7 @@ enum drbd_ret_codes { ERR_PERM = 152, ERR_NEED_APV_93 = 153, ERR_STONITH_AND_PROT_A = 154, + ERR_CONG_NOT_PROTO_A = 155, /* insert new ones above this line */ AFTER_LAST_ERR_CODE diff --git a/include/linux/drbd_limits.h b/include/linux/drbd_limits.h index 4ac33f34b77e..abf418724e52 100644 --- a/include/linux/drbd_limits.h +++ b/include/linux/drbd_limits.h @@ -129,6 +129,7 @@ #define DRBD_AFTER_SB_2P_DEF ASB_DISCONNECT #define DRBD_RR_CONFLICT_DEF ASB_DISCONNECT #define DRBD_ON_NO_DATA_DEF OND_IO_ERROR +#define DRBD_ON_CONGESTION_DEF OC_BLOCK #define DRBD_MAX_BIO_BVECS_MIN 0 #define DRBD_MAX_BIO_BVECS_MAX 128 @@ -154,5 +155,13 @@ #define DRBD_C_MIN_RATE_MAX (4 << 20) #define DRBD_C_MIN_RATE_DEF 4096 +#define DRBD_CONG_FILL_MIN 0 +#define DRBD_CONG_FILL_MAX (10<<21) /* 10GByte in sectors */ +#define DRBD_CONG_FILL_DEF 0 + +#define DRBD_CONG_EXTENTS_MIN DRBD_AL_EXTENTS_MIN +#define DRBD_CONG_EXTENTS_MAX DRBD_AL_EXTENTS_MAX +#define DRBD_CONG_EXTENTS_DEF DRBD_AL_EXTENTS_DEF + #undef RANGE #endif diff --git a/include/linux/drbd_nl.h b/include/linux/drbd_nl.h index ade91107c9a5..8cde3945d1f7 100644 --- a/include/linux/drbd_nl.h +++ b/include/linux/drbd_nl.h @@ -56,6 +56,9 @@ NL_PACKET(net_conf, 5, NL_INTEGER( 39, T_MAY_IGNORE, rr_conflict) NL_INTEGER( 40, T_MAY_IGNORE, ping_timeo) NL_INTEGER( 67, T_MAY_IGNORE, rcvbuf_size) + NL_INTEGER( 81, T_MAY_IGNORE, on_congestion) + NL_INTEGER( 82, T_MAY_IGNORE, cong_fill) + NL_INTEGER( 83, T_MAY_IGNORE, cong_extents) /* 59 addr_family was available in GIT, never released */ NL_BIT( 60, T_MANDATORY, mind_af) NL_BIT( 27, T_MAY_IGNORE, want_lose) -- cgit v1.2.3 From 67531718d8f1259f01ab84c2aa25f7b03c7afd46 Mon Sep 17 00:00:00 2001 From: Philipp Reisner Date: Wed, 27 Oct 2010 12:21:30 +0200 Subject: drbd: Implemented two new connection states Ahead/Behind In this connection mode, the ahead node no longer replicates application IO. The behind's disk becomes out dated. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/drbd.h b/include/linux/drbd.h index 03a08baabf11..23f31be6f00d 100644 --- a/include/linux/drbd.h +++ b/include/linux/drbd.h @@ -206,6 +206,10 @@ enum drbd_conns { C_VERIFY_T, C_PAUSED_SYNC_S, C_PAUSED_SYNC_T, + + C_AHEAD, + C_BEHIND, + C_MASK = 31 }; -- cgit v1.2.3 From 73a01a18b9c28a0fab1131ece5b0a9bc00a879b8 Mon Sep 17 00:00:00 2001 From: Philipp Reisner Date: Wed, 27 Oct 2010 14:33:00 +0200 Subject: drbd: New packet for Ahead/Behind mode: P_OUT_OF_SYNC Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/drbd.h b/include/linux/drbd.h index 23f31be6f00d..41da654cc0b1 100644 --- a/include/linux/drbd.h +++ b/include/linux/drbd.h @@ -56,7 +56,7 @@ extern const char *drbd_buildtag(void); #define REL_VERSION "8.3.9" #define API_VERSION 88 #define PRO_VERSION_MIN 86 -#define PRO_VERSION_MAX 95 +#define PRO_VERSION_MAX 96 enum drbd_io_error_p { -- cgit v1.2.3 From 42ff269d1022a86be4f526cf674998c47b7ab856 Mon Sep 17 00:00:00 2001 From: Lars Ellenberg Date: Wed, 24 Nov 2010 10:11:14 +0100 Subject: drbd: add packet_type 27 (return_code_only) to netlink api In case we ever should add an other packet type, we must not reuse 27, as that currently used for "empty" return code only replies. Document it as such. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd_nl.h | 6 +++++- include/linux/drbd_tag_magic.h | 1 + 2 files changed, 6 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/drbd_nl.h b/include/linux/drbd_nl.h index 8cde3945d1f7..6fc614b06c4d 100644 --- a/include/linux/drbd_nl.h +++ b/include/linux/drbd_nl.h @@ -146,9 +146,13 @@ NL_PACKET(new_c_uuid, 26, NL_BIT( 63, T_MANDATORY, clear_bm) ) +#ifdef NL_RESPONSE +NL_RESPONSE(return_code_only, 27) +#endif + #undef NL_PACKET #undef NL_INTEGER #undef NL_INT64 #undef NL_BIT #undef NL_STRING - +#undef NL_RESPONSE diff --git a/include/linux/drbd_tag_magic.h b/include/linux/drbd_tag_magic.h index fcdff8410e99..f14a165e82dc 100644 --- a/include/linux/drbd_tag_magic.h +++ b/include/linux/drbd_tag_magic.h @@ -7,6 +7,7 @@ /* declare packet_type enums */ enum packet_types { #define NL_PACKET(name, number, fields) P_ ## name = number, +#define NL_RESPONSE(name, number) P_ ## name = number, #define NL_INTEGER(pn, pr, member) #define NL_INT64(pn, pr, member) #define NL_BIT(pn, pr, member) -- cgit v1.2.3 From 2561b9c1f1d63077c41903fc6ad58dc9ec47248b Mon Sep 17 00:00:00 2001 From: Philipp Reisner Date: Fri, 3 Dec 2010 15:22:48 +0100 Subject: drbd: --force option for disconnect As the network connection can be lost at any time, a --force option for disconnect is just a matter of completeness. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd_nl.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/drbd_nl.h b/include/linux/drbd_nl.h index 6fc614b06c4d..ab6159e4fcf0 100644 --- a/include/linux/drbd_nl.h +++ b/include/linux/drbd_nl.h @@ -69,7 +69,9 @@ NL_PACKET(net_conf, 5, NL_BIT( 70, T_MANDATORY, dry_run) ) -NL_PACKET(disconnect, 6, ) +NL_PACKET(disconnect, 6, + NL_BIT( 84, T_MAY_IGNORE, force) +) NL_PACKET(resize, 7, NL_INT64( 29, T_MAY_IGNORE, resize_size) -- cgit v1.2.3 From 116676ca621a862a8124969772f4dd61c8b40eee Mon Sep 17 00:00:00 2001 From: Andreas Gruenbacher Date: Wed, 8 Dec 2010 13:33:11 +0100 Subject: drbd: Rename enum drbd_ret_codes to enum drbd_ret_code Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/drbd.h b/include/linux/drbd.h index 41da654cc0b1..d92f989036c9 100644 --- a/include/linux/drbd.h +++ b/include/linux/drbd.h @@ -103,7 +103,7 @@ enum drbd_on_congestion { }; /* KEEP the order, do not delete or insert. Only append. */ -enum drbd_ret_codes { +enum drbd_ret_code { ERR_CODE_BASE = 100, NO_ERROR = 101, ERR_LOCAL_ADDR = 102, -- cgit v1.2.3 From c8b325632f0e5ffdaeca3d1f3be77c9399316a40 Mon Sep 17 00:00:00 2001 From: Andreas Gruenbacher Date: Wed, 8 Dec 2010 01:06:16 +0100 Subject: drbd: Rename enum drbd_state_ret_codes to enum drbd_state_rv Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/drbd.h b/include/linux/drbd.h index d92f989036c9..d10431fab004 100644 --- a/include/linux/drbd.h +++ b/include/linux/drbd.h @@ -270,7 +270,7 @@ union drbd_state { unsigned int i; }; -enum drbd_state_ret_codes { +enum drbd_state_rv { SS_CW_NO_NEED = 4, SS_CW_SUCCESS = 3, SS_NOTHING_TO_DO = 2, @@ -301,7 +301,7 @@ enum drbd_state_ret_codes { extern const char *drbd_conn_str(enum drbd_conns); extern const char *drbd_role_str(enum drbd_role); extern const char *drbd_disk_str(enum drbd_disk_state); -extern const char *drbd_set_st_err_str(enum drbd_state_ret_codes); +extern const char *drbd_set_st_err_str(enum drbd_state_rv); #define SHARED_SECRET_MAX 64 -- cgit v1.2.3 From 2b8a90b55533c66258a1ff0fb27b8cffa95665c4 Mon Sep 17 00:00:00 2001 From: Philipp Reisner Date: Mon, 10 Jan 2011 11:15:17 +0100 Subject: drbd: Corrected off-by-one error in DRBD_MINOR_COUNT_MAX Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd_limits.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/drbd_limits.h b/include/linux/drbd_limits.h index abf418724e52..bb264a5732de 100644 --- a/include/linux/drbd_limits.h +++ b/include/linux/drbd_limits.h @@ -16,7 +16,8 @@ #define DEBUG_RANGE_CHECK 0 #define DRBD_MINOR_COUNT_MIN 1 -#define DRBD_MINOR_COUNT_MAX 255 +#define DRBD_MINOR_COUNT_MAX 256 +#define DRBD_MINOR_COUNT_DEF 32 #define DRBD_DIALOG_REFRESH_MIN 0 #define DRBD_DIALOG_REFRESH_MAX 600 -- cgit v1.2.3 From cd88d030d41a9b0100fd5fee872024e6ebc8b276 Mon Sep 17 00:00:00 2001 From: Philipp Reisner Date: Thu, 20 Jan 2011 11:46:41 +0100 Subject: drbd: Provide hints with the error message when clearing the sync pause flag When the user clears the sync-pause flag, and sync stays in pause state, give hints to the user, why it still is in pause state. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/drbd.h b/include/linux/drbd.h index d10431fab004..ba5c785d3f7d 100644 --- a/include/linux/drbd.h +++ b/include/linux/drbd.h @@ -153,6 +153,8 @@ enum drbd_ret_code { ERR_NEED_APV_93 = 153, ERR_STONITH_AND_PROT_A = 154, ERR_CONG_NOT_PROTO_A = 155, + ERR_PIC_AFTER_DEP = 156, + ERR_PIC_PEER_DEP = 157, /* insert new ones above this line */ AFTER_LAST_ERR_CODE -- cgit v1.2.3 From c5a91619793d444e5103ec5841045bf878718398 Mon Sep 17 00:00:00 2001 From: Andreas Gruenbacher Date: Tue, 25 Jan 2011 17:33:38 +0100 Subject: drbd: Remove unused function atodb_endio() Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/drbd.h b/include/linux/drbd.h index ba5c785d3f7d..d18d673ebc78 100644 --- a/include/linux/drbd.h +++ b/include/linux/drbd.h @@ -53,7 +53,7 @@ extern const char *drbd_buildtag(void); -#define REL_VERSION "8.3.9" +#define REL_VERSION "8.3.10" #define API_VERSION 88 #define PRO_VERSION_MIN 86 #define PRO_VERSION_MAX 96 -- cgit v1.2.3 From e6e1e2593592a8f6f6380496655d8c6f67431266 Mon Sep 17 00:00:00 2001 From: Steven Rostedt Date: Wed, 9 Mar 2011 10:41:56 -0500 Subject: tracing: Remove lock_depth from event entry The lock_depth field in the event headers was added as a temporary data point for help in removing the BKL. Now that the BKL is pretty much been removed, we can remove this field. This in turn changes the header from 12 bytes to 8 bytes, removing the 4 byte buffer that gcc would insert if the first field in the data load was 8 bytes in size. Signed-off-by: Steven Rostedt --- include/linux/ftrace_event.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/ftrace_event.h b/include/linux/ftrace_event.h index 1a99e7939c2b..22b32af1b5ec 100644 --- a/include/linux/ftrace_event.h +++ b/include/linux/ftrace_event.h @@ -37,7 +37,6 @@ struct trace_entry { unsigned char flags; unsigned char preempt_count; int pid; - int lock_depth; }; #define FTRACE_MAX_EVENT \ -- cgit v1.2.3 From 53370d2e8c0382e3e2aa76def93365ed674e7fc7 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Thu, 10 Mar 2011 18:26:33 +0100 Subject: hrtimer: Update hrtimer->state documentation We changed some of the state bits and combinations thereof over time, but never updated the documentation. Signed-off-by: Thomas Gleixner --- include/linux/hrtimer.h | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/hrtimer.h b/include/linux/hrtimer.h index 6bc1804bfbfa..62f500c724f9 100644 --- a/include/linux/hrtimer.h +++ b/include/linux/hrtimer.h @@ -54,11 +54,13 @@ enum hrtimer_restart { * 0x00 inactive * 0x01 enqueued into rbtree * 0x02 callback function running + * 0x04 timer is migrated to another cpu * * Special cases: * 0x03 callback function running and enqueued * (was requeued on another CPU) - * 0x09 timer was migrated on CPU hotunplug + * 0x05 timer was migrated on CPU hotunplug + * * The "callback function running and enqueued" status is only possible on * SMP. It happens for example when a posix timer expired and the callback * queued a signal. Between dropping the lock which protects the posix timer @@ -67,8 +69,11 @@ enum hrtimer_restart { * as otherwise the timer could be removed before the softirq code finishes the * the handling of the timer. * - * The HRTIMER_STATE_ENQUEUED bit is always or'ed to the current state to - * preserve the HRTIMER_STATE_CALLBACK bit in the above scenario. + * The HRTIMER_STATE_ENQUEUED bit is always or'ed to the current state + * to preserve the HRTIMER_STATE_CALLBACK in the above scenario. This + * also affects HRTIMER_STATE_MIGRATE where the preservation is not + * necessary. HRTIMER_STATE_MIGRATE is cleared after the timer is + * enqueued on the new cpu. * * All state transitions are protected by cpu_base->lock. */ @@ -376,8 +381,9 @@ extern int hrtimer_get_res(const clockid_t which_clock, struct timespec *tp); extern ktime_t hrtimer_get_next_event(void); /* - * A timer is active, when it is enqueued into the rbtree or the callback - * function is running. + * A timer is active, when it is enqueued into the rbtree or the + * callback function is running or it's in the state of being migrated + * to another cpu. */ static inline int hrtimer_active(const struct hrtimer *timer) { -- cgit v1.2.3 From bf294b41cefcb22fc3139e0f42c5b3f06728bd5e Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Mon, 21 Feb 2011 11:05:41 -0800 Subject: SUNRPC: Close a race in __rpc_wait_for_completion_task() Although they run as rpciod background tasks, under normal operation (i.e. no SIGKILL), functions like nfs_sillyrename(), nfs4_proc_unlck() and nfs4_do_close() want to be fully synchronous. This means that when we exit, we want all references to the rpc_task to be gone, and we want any dentry references etc. held by that task to be released. For this reason these functions call __rpc_wait_for_completion_task(), followed by rpc_put_task() in the expectation that the latter will be releasing the last reference to the rpc_task, and thus ensuring that the callback_ops->rpc_release() has been called synchronously. This patch fixes a race which exists due to the fact that rpciod calls rpc_complete_task() (in order to wake up the callers of __rpc_wait_for_completion_task()) and then subsequently calls rpc_put_task() without ensuring that these two steps are done atomically. In order to avoid adding new spin locks, the patch uses the existing waitqueue spin lock to order the rpc_task reference count releases between the waiting process and rpciod. The common case where nobody is waiting for completion is optimised for by checking if the RPC_TASK_ASYNC flag is cleared and/or if the rpc_task reference count is 1: in those cases we drop trying to grab the spin lock, and immediately free up the rpc_task. Those few processes that need to put the rpc_task from inside an asynchronous context and that do not care about ordering are given a new helper: rpc_put_task_async(). Signed-off-by: Trond Myklebust --- include/linux/sunrpc/sched.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/sunrpc/sched.h b/include/linux/sunrpc/sched.h index 88513fd8e208..d81db8012c63 100644 --- a/include/linux/sunrpc/sched.h +++ b/include/linux/sunrpc/sched.h @@ -212,6 +212,7 @@ struct rpc_task *rpc_run_task(const struct rpc_task_setup *); struct rpc_task *rpc_run_bc_task(struct rpc_rqst *req, const struct rpc_call_ops *ops); void rpc_put_task(struct rpc_task *); +void rpc_put_task_async(struct rpc_task *); void rpc_exit_task(struct rpc_task *); void rpc_exit(struct rpc_task *, int); void rpc_release_calldata(const struct rpc_call_ops *, void *); -- cgit v1.2.3 From 114f64b5f24abac33a42f4f1856eb3a9766d497e Mon Sep 17 00:00:00 2001 From: Andy Adamson Date: Wed, 9 Mar 2011 13:13:45 -0500 Subject: NFSv4: remove duplicate clientid in struct nfs_client Signed-off-by: Andy Adamson Signed-off-by: Trond Myklebust --- include/linux/nfs_fs_sb.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h index b197563913bf..6beb33e834ba 100644 --- a/include/linux/nfs_fs_sb.h +++ b/include/linux/nfs_fs_sb.h @@ -71,8 +71,6 @@ struct nfs_client { #endif /* CONFIG_NFS_V4 */ #ifdef CONFIG_NFS_V4_1 - /* clientid returned from EXCHANGE_ID, used by session operations */ - u64 cl_ex_clid; /* The sequence id to use for the next CREATE_SESSION */ u32 cl_seqid; /* The flags used for obtaining the clientid during EXCHANGE_ID */ -- cgit v1.2.3 From dbdd9a52e38a4a93adfa4d0278801cce4fad98eb Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Thu, 10 Mar 2011 16:34:38 -0800 Subject: ipv4: Remove redundant RCU locking in ip_check_mc(). All callers are under rcu_read_lock() protection already. Rename to ip_check_mc_rcu() to make it even more clear. Signed-off-by: David S. Miller --- include/linux/igmp.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/igmp.h b/include/linux/igmp.h index 74cfcff0148b..82de336b8155 100644 --- a/include/linux/igmp.h +++ b/include/linux/igmp.h @@ -217,7 +217,7 @@ struct ip_mc_list { #define IGMPV3_QQIC(value) IGMPV3_EXP(0x80, 4, 3, value) #define IGMPV3_MRC(value) IGMPV3_EXP(0x80, 4, 3, value) -extern int ip_check_mc(struct in_device *dev, __be32 mc_addr, __be32 src_addr, u16 proto); +extern int ip_check_mc_rcu(struct in_device *dev, __be32 mc_addr, __be32 src_addr, u16 proto); extern int igmp_rcv(struct sk_buff *); extern int ip_mc_join_group(struct sock *sk, struct ip_mreqn *imr); extern int ip_mc_leave_group(struct sock *sk, struct ip_mreqn *imr); -- cgit v1.2.3 From e9bce845c0cee1a492e5cee6a827ae71140fe8b3 Mon Sep 17 00:00:00 2001 From: Yi Zou Date: Wed, 9 Mar 2011 08:48:03 +0000 Subject: net: add proper documentation for previously added net_device_ops for FCoE Add proper documentation for previously added net_device_ops ops for FCoE. Signed-off-by: Yi Zou Signed-off-by: Jeff Kirsher --- include/linux/netdevice.h | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 7a071535c4c0..604dbf5051d3 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -777,6 +777,42 @@ struct netdev_tc_txq { * queues stopped. This allows the netdevice to perform queue management * safely. * + * Fiber Channel over Ethernet (FCoE) offload functions. + * int (*ndo_fcoe_enable)(struct net_device *dev); + * Called when the FCoE protocol stack wants to start using LLD for FCoE + * so the underlying device can perform whatever needed configuration or + * initialization to support acceleration of FCoE traffic. + * + * int (*ndo_fcoe_disable)(struct net_device *dev); + * Called when the FCoE protocol stack wants to stop using LLD for FCoE + * so the underlying device can perform whatever needed clean-ups to + * stop supporting acceleration of FCoE traffic. + * + * int (*ndo_fcoe_ddp_setup)(struct net_device *dev, u16 xid, + * struct scatterlist *sgl, unsigned int sgc); + * Called when the FCoE Initiator wants to initialize an I/O that + * is a possible candidate for Direct Data Placement (DDP). The LLD can + * perform necessary setup and returns 1 to indicate the device is set up + * successfully to perform DDP on this I/O, otherwise this returns 0. + * + * int (*ndo_fcoe_ddp_done)(struct net_device *dev, u16 xid); + * Called when the FCoE Initiator/Target is done with the DDPed I/O as + * indicated by the FC exchange id 'xid', so the underlying device can + * clean up and reuse resources for later DDP requests. + * + * int (*ndo_fcoe_ddp_target)(struct net_device *dev, u16 xid, + * struct scatterlist *sgl, unsigned int sgc); + * Called when the FCoE Target wants to initialize an I/O that + * is a possible candidate for Direct Data Placement (DDP). The LLD can + * perform necessary setup and returns 1 to indicate the device is set up + * successfully to perform DDP on this I/O, otherwise this returns 0. + * + * int (*ndo_fcoe_get_wwn)(struct net_device *dev, u64 *wwn, int type); + * Called when the underlying device wants to override default World Wide + * Name (WWN) generation mechanism in FCoE protocol stack to pass its own + * World Wide Port Name (WWPN) or World Wide Node Name (WWNN) to the FCoE + * protocol stack to use. + * * RFS acceleration. * int (*ndo_rx_flow_steer)(struct net_device *dev, const struct sk_buff *skb, * u16 rxq_index, u32 flow_id); -- cgit v1.2.3 From d9936bb3952a08d701f7b03f8f62d158f94d8085 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Fri, 11 Mar 2011 14:15:35 +0100 Subject: genirq: Add desc->irq_data accessor We have accessors for all fields in irq_data based on irq_desc, but not for irq_data itself. Signed-off-by: Thomas Gleixner --- include/linux/irqdesc.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h index 9eb9cd313052..00218371518b 100644 --- a/include/linux/irqdesc.h +++ b/include/linux/irqdesc.h @@ -109,6 +109,11 @@ static inline struct irq_desc *move_irq_desc(struct irq_desc *desc, int node) #ifdef CONFIG_GENERIC_HARDIRQS +static inline struct irq_data *irq_desc_get_irq_data(struct irq_desc *desc) +{ + return &desc->irq_data; +} + static inline struct irq_chip *irq_desc_get_chip(struct irq_desc *desc) { return desc->irq_data.chip; -- cgit v1.2.3 From c7519dbf6f4b4408229d279d799c938ffdd06f21 Mon Sep 17 00:00:00 2001 From: Jarkko Lavinen Date: Mon, 14 Feb 2011 16:16:09 +0200 Subject: mtd_blkdevs: Add background processing support Add a new background method into mtd_blktrans_ops, add background support into mtd_blktrans_thread(), and add mtd_blktrans_cease_background(). If the mtd blktrans dev has the background support, the thread will call background function when the request queue becomes empty. The background operation may run as long as needs to until mtd_blktrans_cease_background() tells to stop. Signed-off-by: Jarkko Lavinen Tested-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- include/linux/mtd/blktrans.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mtd/blktrans.h b/include/linux/mtd/blktrans.h index 26529ebd59cc..66bec4bf2b0a 100644 --- a/include/linux/mtd/blktrans.h +++ b/include/linux/mtd/blktrans.h @@ -62,6 +62,7 @@ struct mtd_blktrans_ops { unsigned long block, char *buffer); int (*discard)(struct mtd_blktrans_dev *dev, unsigned long block, unsigned nr_blocks); + void (*background)(struct mtd_blktrans_dev *dev); /* Block layer ioctls */ int (*getgeo)(struct mtd_blktrans_dev *dev, struct hd_geometry *geo); @@ -85,6 +86,7 @@ extern int register_mtd_blktrans(struct mtd_blktrans_ops *tr); extern int deregister_mtd_blktrans(struct mtd_blktrans_ops *tr); extern int add_mtd_blktrans_dev(struct mtd_blktrans_dev *dev); extern int del_mtd_blktrans_dev(struct mtd_blktrans_dev *dev); +extern int mtd_blktrans_cease_background(struct mtd_blktrans_dev *dev); #endif /* __MTD_TRANS_H__ */ -- cgit v1.2.3 From dcfb81d61da1367e52f7f7e3ceff0d0044c3c7ee Mon Sep 17 00:00:00 2001 From: David Griego Date: Tue, 30 Nov 2010 15:32:05 +0530 Subject: mtd: NOR flash driver for OMAP-L137/AM17x OMAP-L137/AM17x has limited number of dedicated EMIFA address pins, enough to interface directly to an SDRAM. If a device such as an asynchronous flash needs to be attached to the EMIFA, then either GPIO pins or a chip select may be used to control the flash device's upper address lines. This patch adds support for the NOR flash on the OMAP-L137/ AM17x user interface daughter board using the latch-addr-flash MTD mapping driver which allows flashes to be partially physically addressed. The upper address lines are set by a board specific code which is a separate patch. Signed-off-by: David Griego Signed-off-by: Aleksey Makarov Signed-off-by: Sergei Shtylyov Signed-off-by: Savinay Dharmappa Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- include/linux/mtd/latch-addr-flash.h | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 include/linux/mtd/latch-addr-flash.h (limited to 'include/linux') diff --git a/include/linux/mtd/latch-addr-flash.h b/include/linux/mtd/latch-addr-flash.h new file mode 100644 index 000000000000..e94b8e128074 --- /dev/null +++ b/include/linux/mtd/latch-addr-flash.h @@ -0,0 +1,29 @@ +/* + * Interface for NOR flash driver whose high address lines are latched + * + * Copyright © 2008 MontaVista Software, Inc. + * + * This file is licensed under the terms of the GNU General Public License + * version 2. This program is licensed "as is" without any warranty of any + * kind, whether express or implied. + */ +#ifndef __LATCH_ADDR_FLASH__ +#define __LATCH_ADDR_FLASH__ + +struct map_info; +struct mtd_partition; + +struct latch_addr_flash_data { + unsigned int width; + unsigned int size; + + int (*init)(void *data, int cs); + void (*done)(void *data); + void (*set_window)(unsigned long offset, void *data); + void *data; + + unsigned int nr_parts; + struct mtd_partition *parts; +}; + +#endif -- cgit v1.2.3 From b3dcfd35244e1cb8dc8dfa5c05013b133dbb437a Mon Sep 17 00:00:00 2001 From: Roman Tereshonkov Date: Thu, 17 Feb 2011 13:44:41 +0200 Subject: mtd: onenand: add new option to control initial onenand unlocking A new option ONENAND_SKIP_INITIAL_UNLOCKING is added. This allows to disable initial onenand unlocking when the driver is initialized. Signed-off-by: Roman Tereshonkov Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- include/linux/mtd/onenand.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/mtd/onenand.h b/include/linux/mtd/onenand.h index ae418e41d8f5..52b6f187bf49 100644 --- a/include/linux/mtd/onenand.h +++ b/include/linux/mtd/onenand.h @@ -198,6 +198,7 @@ struct onenand_chip { #define ONENAND_SKIP_UNLOCK_CHECK (0x0100) #define ONENAND_PAGEBUF_ALLOC (0x1000) #define ONENAND_OOBBUF_ALLOC (0x2000) +#define ONENAND_SKIP_INITIAL_UNLOCKING (0x4000) #define ONENAND_IS_4KB_PAGE(this) \ (this->options & ONENAND_HAS_4KB_PAGE) -- cgit v1.2.3 From 437aa565e2656776a7104aaacd792fe789ea8b2d Mon Sep 17 00:00:00 2001 From: Ivan Djelic Date: Fri, 11 Mar 2011 11:05:32 +0100 Subject: lib: add shared BCH ECC library MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This is a new software BCH encoding/decoding library, similar to the shared Reed-Solomon library. Binary BCH (Bose-Chaudhuri-Hocquenghem) codes are widely used to correct errors in NAND flash devices requiring more than 1-bit ecc correction; they are generally better suited for NAND flash than RS codes because NAND bit errors do not occur in bursts. Latest SLC NAND devices typically require at least 4-bit ecc protection per 512 bytes block. This library provides software encoding/decoding, but may also be used with ASIC/SoC hardware BCH engines to perform error correction. It is being currently used for this purpose on an OMAP3630 board (4bit/8bit HW BCH). It has also been used to decode raw dumps of NAND devices with on-die BCH ecc engines (e.g. Micron 4bit ecc SLC devices). Latest NAND devices (including SLC) can exhibit high error rates (typically a dozen or more bitflips per hour during stress tests); in order to minimize the performance impact of error correction, this library implements recently developed algorithms for fast polynomial root finding (see bch.c header for details) instead of the traditional exhaustive Chien root search; a few performance figures are provided below: Platform: arm926ejs @ 468 MHz, 32 KiB icache, 16 KiB dcache BCH ecc : 4-bit per 512 bytes Encoding average throughput: 250 Mbits/s Error correction time (compared with Chien search): average worst average (Chien) worst (Chien) ---------------------------------------------------------- 1 bit 8.5 µs 11 µs 200 µs 383 µs 2 bit 9.7 µs 12.5 µs 477 µs 728 µs 3 bit 18.1 µs 20.6 µs 758 µs 1010 µs 4 bit 19.5 µs 23 µs 1028 µs 1280 µs In the above figures, "worst" is meant in terms of error pattern, not in terms of cache miss / page faults effects (not taken into account here). The library has been extensively tested on the following platforms: x86, x86_64, arm926ejs, omap3630, qemu-ppc64, qemu-mips. Signed-off-by: Ivan Djelic Signed-off-by: David Woodhouse --- include/linux/bch.h | 79 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 79 insertions(+) create mode 100644 include/linux/bch.h (limited to 'include/linux') diff --git a/include/linux/bch.h b/include/linux/bch.h new file mode 100644 index 000000000000..295b4ef153bb --- /dev/null +++ b/include/linux/bch.h @@ -0,0 +1,79 @@ +/* + * Generic binary BCH encoding/decoding library + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program; if not, write to the Free Software Foundation, Inc., 51 + * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Copyright © 2011 Parrot S.A. + * + * Author: Ivan Djelic + * + * Description: + * + * This library provides runtime configurable encoding/decoding of binary + * Bose-Chaudhuri-Hocquenghem (BCH) codes. +*/ +#ifndef _BCH_H +#define _BCH_H + +#include + +/** + * struct bch_control - BCH control structure + * @m: Galois field order + * @n: maximum codeword size in bits (= 2^m-1) + * @t: error correction capability in bits + * @ecc_bits: ecc exact size in bits, i.e. generator polynomial degree (<=m*t) + * @ecc_bytes: ecc max size (m*t bits) in bytes + * @a_pow_tab: Galois field GF(2^m) exponentiation lookup table + * @a_log_tab: Galois field GF(2^m) log lookup table + * @mod8_tab: remainder generator polynomial lookup tables + * @ecc_buf: ecc parity words buffer + * @ecc_buf2: ecc parity words buffer + * @xi_tab: GF(2^m) base for solving degree 2 polynomial roots + * @syn: syndrome buffer + * @cache: log-based polynomial representation buffer + * @elp: error locator polynomial + * @poly_2t: temporary polynomials of degree 2t + */ +struct bch_control { + unsigned int m; + unsigned int n; + unsigned int t; + unsigned int ecc_bits; + unsigned int ecc_bytes; +/* private: */ + uint16_t *a_pow_tab; + uint16_t *a_log_tab; + uint32_t *mod8_tab; + uint32_t *ecc_buf; + uint32_t *ecc_buf2; + unsigned int *xi_tab; + unsigned int *syn; + int *cache; + struct gf_poly *elp; + struct gf_poly *poly_2t[4]; +}; + +struct bch_control *init_bch(int m, int t, unsigned int prim_poly); + +void free_bch(struct bch_control *bch); + +void encode_bch(struct bch_control *bch, const uint8_t *data, + unsigned int len, uint8_t *ecc); + +int decode_bch(struct bch_control *bch, const uint8_t *data, unsigned int len, + const uint8_t *recv_ecc, const uint8_t *calc_ecc, + const unsigned int *syn, unsigned int *errloc); + +#endif /* _BCH_H */ -- cgit v1.2.3 From 1065cda8a1a57d0d3bfccdce1a655a84439d24e0 Mon Sep 17 00:00:00 2001 From: Steffen Sledz Date: Thu, 10 Mar 2011 09:05:12 +0100 Subject: mtd: cfi: add support for AMIC flashes (e.g. A29L160AT) Signed-off-by: Steffen Sledz Signed-off-by: David Woodhouse --- include/linux/mtd/cfi.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/mtd/cfi.h b/include/linux/mtd/cfi.h index a9baee6864af..0d823f2dd667 100644 --- a/include/linux/mtd/cfi.h +++ b/include/linux/mtd/cfi.h @@ -535,6 +535,7 @@ struct cfi_fixup { #define CFI_MFR_CONTINUATION 0x007F #define CFI_MFR_AMD 0x0001 +#define CFI_MFR_AMIC 0x0037 #define CFI_MFR_ATMEL 0x001F #define CFI_MFR_EON 0x001C #define CFI_MFR_FUJITSU 0x0004 -- cgit v1.2.3 From 1a757fe5d4234293d6a3acccd7196f1386443956 Mon Sep 17 00:00:00 2001 From: Christoph Lameter Date: Fri, 25 Feb 2011 11:38:51 -0600 Subject: slub: min_partial needs to be in first cacheline It is used in unfreeze_slab() which is a performance critical function. Signed-off-by: Christoph Lameter Signed-off-by: Pekka Enberg --- include/linux/slub_def.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h index 8b6e8ae5d5ca..875df55ab36d 100644 --- a/include/linux/slub_def.h +++ b/include/linux/slub_def.h @@ -70,6 +70,7 @@ struct kmem_cache { struct kmem_cache_cpu __percpu *cpu_slab; /* Used for retriving partial slabs etc */ unsigned long flags; + unsigned long min_partial; int size; /* The size of an object including meta data */ int objsize; /* The size of an object without meta data */ int offset; /* Free pointer offset. */ @@ -83,7 +84,6 @@ struct kmem_cache { void (*ctor)(void *); int inuse; /* Offset to metadata */ int align; /* Alignment */ - unsigned long min_partial; const char *name; /* Name (only for display!) */ struct list_head list; /* List of slab caches */ #ifdef CONFIG_SYSFS -- cgit v1.2.3 From 8a5ec0ba42c4919e2d8f4c3138cc8b987fdb0b79 Mon Sep 17 00:00:00 2001 From: Christoph Lameter Date: Fri, 25 Feb 2011 11:38:54 -0600 Subject: Lockless (and preemptless) fastpaths for slub Use the this_cpu_cmpxchg_double functionality to implement a lockless allocation algorithm on arches that support fast this_cpu_ops. Each of the per cpu pointers is paired with a transaction id that ensures that updates of the per cpu information can only occur in sequence on a certain cpu. A transaction id is a "long" integer that is comprised of an event number and the cpu number. The event number is incremented for every change to the per cpu state. This means that the cmpxchg instruction can verify for an update that nothing interfered and that we are updating the percpu structure for the processor where we picked up the information and that we are also currently on that processor when we update the information. This results in a significant decrease of the overhead in the fastpaths. It also makes it easy to adopt the fast path for realtime kernels since this is lockless and does not require the use of the current per cpu area over the critical section. It is only important that the per cpu area is current at the beginning of the critical section and at the end. So there is no need even to disable preemption. Test results show that the fastpath cycle count is reduced by up to ~ 40% (alloc/free test goes from ~140 cycles down to ~80). The slowpath for kfree adds a few cycles. Sadly this does nothing for the slowpath which is where the main issues with performance in slub are but the best case performance rises significantly. (For that see the more complex slub patches that require cmpxchg_double) Kmalloc: alloc/free test Before: 10000 times kmalloc(8)/kfree -> 134 cycles 10000 times kmalloc(16)/kfree -> 152 cycles 10000 times kmalloc(32)/kfree -> 144 cycles 10000 times kmalloc(64)/kfree -> 142 cycles 10000 times kmalloc(128)/kfree -> 142 cycles 10000 times kmalloc(256)/kfree -> 132 cycles 10000 times kmalloc(512)/kfree -> 132 cycles 10000 times kmalloc(1024)/kfree -> 135 cycles 10000 times kmalloc(2048)/kfree -> 135 cycles 10000 times kmalloc(4096)/kfree -> 135 cycles 10000 times kmalloc(8192)/kfree -> 144 cycles 10000 times kmalloc(16384)/kfree -> 754 cycles After: 10000 times kmalloc(8)/kfree -> 78 cycles 10000 times kmalloc(16)/kfree -> 78 cycles 10000 times kmalloc(32)/kfree -> 82 cycles 10000 times kmalloc(64)/kfree -> 88 cycles 10000 times kmalloc(128)/kfree -> 79 cycles 10000 times kmalloc(256)/kfree -> 79 cycles 10000 times kmalloc(512)/kfree -> 85 cycles 10000 times kmalloc(1024)/kfree -> 82 cycles 10000 times kmalloc(2048)/kfree -> 82 cycles 10000 times kmalloc(4096)/kfree -> 85 cycles 10000 times kmalloc(8192)/kfree -> 82 cycles 10000 times kmalloc(16384)/kfree -> 706 cycles Kmalloc: Repeatedly allocate then free test Before: 10000 times kmalloc(8) -> 211 cycles kfree -> 113 cycles 10000 times kmalloc(16) -> 174 cycles kfree -> 115 cycles 10000 times kmalloc(32) -> 235 cycles kfree -> 129 cycles 10000 times kmalloc(64) -> 222 cycles kfree -> 120 cycles 10000 times kmalloc(128) -> 343 cycles kfree -> 139 cycles 10000 times kmalloc(256) -> 827 cycles kfree -> 147 cycles 10000 times kmalloc(512) -> 1048 cycles kfree -> 272 cycles 10000 times kmalloc(1024) -> 2043 cycles kfree -> 528 cycles 10000 times kmalloc(2048) -> 4002 cycles kfree -> 571 cycles 10000 times kmalloc(4096) -> 7740 cycles kfree -> 628 cycles 10000 times kmalloc(8192) -> 8062 cycles kfree -> 850 cycles 10000 times kmalloc(16384) -> 8895 cycles kfree -> 1249 cycles After: 10000 times kmalloc(8) -> 190 cycles kfree -> 129 cycles 10000 times kmalloc(16) -> 76 cycles kfree -> 123 cycles 10000 times kmalloc(32) -> 126 cycles kfree -> 124 cycles 10000 times kmalloc(64) -> 181 cycles kfree -> 128 cycles 10000 times kmalloc(128) -> 310 cycles kfree -> 140 cycles 10000 times kmalloc(256) -> 809 cycles kfree -> 165 cycles 10000 times kmalloc(512) -> 1005 cycles kfree -> 269 cycles 10000 times kmalloc(1024) -> 1999 cycles kfree -> 527 cycles 10000 times kmalloc(2048) -> 3967 cycles kfree -> 570 cycles 10000 times kmalloc(4096) -> 7658 cycles kfree -> 637 cycles 10000 times kmalloc(8192) -> 8111 cycles kfree -> 859 cycles 10000 times kmalloc(16384) -> 8791 cycles kfree -> 1173 cycles Signed-off-by: Christoph Lameter Signed-off-by: Pekka Enberg --- include/linux/slub_def.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h index 875df55ab36d..009b0020079d 100644 --- a/include/linux/slub_def.h +++ b/include/linux/slub_def.h @@ -35,7 +35,10 @@ enum stat_item { NR_SLUB_STAT_ITEMS }; struct kmem_cache_cpu { - void **freelist; /* Pointer to first free per cpu object */ + void **freelist; /* Pointer to next available object */ +#ifdef CONFIG_CMPXCHG_LOCAL + unsigned long tid; /* Globally unique transaction id */ +#endif struct page *page; /* The slab from which we are allocating */ int node; /* The node of the page (or -1 for debug) */ #ifdef CONFIG_SLUB_STATS -- cgit v1.2.3 From ab9a0f196f2f4f080df54402493ea3dc31b5243e Mon Sep 17 00:00:00 2001 From: Lai Jiangshan Date: Thu, 10 Mar 2011 15:21:48 +0800 Subject: slub: automatically reserve bytes at the end of slab There is no "struct" for slub's slab, it shares with struct page. But struct page is very small, it is insufficient when we need to add some metadata for slab. So we add a field "reserved" to struct kmem_cache, when a slab is allocated, kmem_cache->reserved bytes are automatically reserved at the end of the slab for slab's metadata. Changed from v1: Export the reserved field via sysfs Acked-by: Christoph Lameter Signed-off-by: Lai Jiangshan Signed-off-by: Pekka Enberg --- include/linux/slub_def.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h index 8b6e8ae5d5ca..ae0093cc5189 100644 --- a/include/linux/slub_def.h +++ b/include/linux/slub_def.h @@ -83,6 +83,7 @@ struct kmem_cache { void (*ctor)(void *); int inuse; /* Offset to metadata */ int align; /* Alignment */ + int reserved; /* Reserved bytes at the end of slabs */ unsigned long min_partial; const char *name; /* Name (only for display!) */ struct list_head list; /* List of slab caches */ -- cgit v1.2.3 From 193bd40026443835e1b96c79d5efe559d01509ae Mon Sep 17 00:00:00 2001 From: Ivan Djelic Date: Fri, 11 Mar 2011 11:05:33 +0100 Subject: mtd: nand: add software BCH ECC support This patch adds software BCH ECC support to mtd, in order to handle recent NAND device ecc requirements (4 bits or more). It does so by adding a new ecc mode (NAND_ECC_SOFT_BCH) for use by board drivers, and a new Kconfig option to enable BCH support. It relies on the generic BCH library introduced in a previous patch. When a board driver uses mode NAND_ECC_SOFT_BCH, it should also set fields chip->ecc.size and chip->ecc.bytes to select BCH ecc data size and required error correction capability. See nand_bch_init() documentation for details. It has been tested on the following platforms using mtd-utils, UBI and UBIFS: x86 (with nandsim), arm926ejs. Signed-off-by: Ivan Djelic Signed-off-by: David Woodhouse --- include/linux/mtd/nand.h | 3 ++ include/linux/mtd/nand_bch.h | 72 ++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 75 insertions(+) create mode 100644 include/linux/mtd/nand_bch.h (limited to 'include/linux') diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 1f489b247a29..ae67ef56a8f5 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -140,6 +140,7 @@ typedef enum { NAND_ECC_HW, NAND_ECC_HW_SYNDROME, NAND_ECC_HW_OOB_FIRST, + NAND_ECC_SOFT_BCH, } nand_ecc_modes_t; /* @@ -339,6 +340,7 @@ struct nand_hw_control { * @prepad: padding information for syndrome based ecc generators * @postpad: padding information for syndrome based ecc generators * @layout: ECC layout control struct pointer + * @priv: pointer to private ecc control data * @hwctl: function to control hardware ecc generator. Must only * be provided if an hardware ECC is available * @calculate: function for ecc calculation or readback from ecc hardware @@ -362,6 +364,7 @@ struct nand_ecc_ctrl { int prepad; int postpad; struct nand_ecclayout *layout; + void *priv; void (*hwctl)(struct mtd_info *mtd, int mode); int (*calculate)(struct mtd_info *mtd, const uint8_t *dat, uint8_t *ecc_code); diff --git a/include/linux/mtd/nand_bch.h b/include/linux/mtd/nand_bch.h new file mode 100644 index 000000000000..74acf5367556 --- /dev/null +++ b/include/linux/mtd/nand_bch.h @@ -0,0 +1,72 @@ +/* + * Copyright © 2011 Ivan Djelic + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This file is the header for the NAND BCH ECC implementation. + */ + +#ifndef __MTD_NAND_BCH_H__ +#define __MTD_NAND_BCH_H__ + +struct mtd_info; +struct nand_bch_control; + +#if defined(CONFIG_MTD_NAND_ECC_BCH) + +static inline int mtd_nand_has_bch(void) { return 1; } + +/* + * Calculate BCH ecc code + */ +int nand_bch_calculate_ecc(struct mtd_info *mtd, const u_char *dat, + u_char *ecc_code); + +/* + * Detect and correct bit errors + */ +int nand_bch_correct_data(struct mtd_info *mtd, u_char *dat, u_char *read_ecc, + u_char *calc_ecc); +/* + * Initialize BCH encoder/decoder + */ +struct nand_bch_control * +nand_bch_init(struct mtd_info *mtd, unsigned int eccsize, + unsigned int eccbytes, struct nand_ecclayout **ecclayout); +/* + * Release BCH encoder/decoder resources + */ +void nand_bch_free(struct nand_bch_control *nbc); + +#else /* !CONFIG_MTD_NAND_ECC_BCH */ + +static inline int mtd_nand_has_bch(void) { return 0; } + +static inline int +nand_bch_calculate_ecc(struct mtd_info *mtd, const u_char *dat, + u_char *ecc_code) +{ + return -1; +} + +static inline int +nand_bch_correct_data(struct mtd_info *mtd, unsigned char *buf, + unsigned char *read_ecc, unsigned char *calc_ecc) +{ + return -1; +} + +static inline struct nand_bch_control * +nand_bch_init(struct mtd_info *mtd, unsigned int eccsize, + unsigned int eccbytes, struct nand_ecclayout **ecclayout) +{ + return NULL; +} + +static inline void nand_bch_free(struct nand_bch_control *nbc) {} + +#endif /* CONFIG_MTD_NAND_ECC_BCH */ + +#endif /* __MTD_NAND_BCH_H__ */ -- cgit v1.2.3 From 1f940bdfc0d03265d178d9dfd840d854819f797d Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Fri, 11 Mar 2011 20:17:08 +0100 Subject: block: fixup plugging stubs for !CONFIG_BLOCK They used an older prototype, fix it up. Reported-by: Randy Dunlap Signed-off-by: Jens Axboe --- include/linux/blkdev.h | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 91fa428fa2c1..16a902f099ac 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -1297,15 +1297,18 @@ static inline long nr_blockdev_pages(void) return 0; } -static inline void blk_start_plug(struct list_head *list) +struct blk_plug { +}; + +static inline void blk_start_plug(struct blk_plug *plug) { } -static inline void blk_finish_plug(struct list_head *list) +static inline void blk_finish_plug(struct blk_plug *plug) { } -static inline void blk_flush_plug(struct task_struct *tsk) +static inline void blk_flush_plug(struct task_struct *task) { } -- cgit v1.2.3 From bf6a9b8336ba12672755c2ae898b0abe42c7a5ac Mon Sep 17 00:00:00 2001 From: Lai Jiangshan Date: Tue, 21 Dec 2010 17:55:14 +0800 Subject: plist: Shrink struct plist_head struct plist_head is used in struct task_struct as well as struct rtmutex. If we can make it smaller, it will also make these structures smaller as well. The field prio_list in struct plist_head is seldom used and we can get its information from the plist_nodes. Removing this field will decrease the size of plist_head by half. Signed-off-by: Lai Jiangshan LKML-Reference: <4D107982.9090700@cn.fujitsu.com> Signed-off-by: Steven Rostedt --- include/linux/plist.h | 47 ++++++++++++++++++++++++----------------------- 1 file changed, 24 insertions(+), 23 deletions(-) (limited to 'include/linux') diff --git a/include/linux/plist.h b/include/linux/plist.h index 7254eda078e5..c9b9f322c8d8 100644 --- a/include/linux/plist.h +++ b/include/linux/plist.h @@ -31,15 +31,17 @@ * * Simple ASCII art explanation: * - * |HEAD | - * | | - * |prio_list.prev|<------------------------------------| - * |prio_list.next|<->|pl|<->|pl|<--------------->|pl|<-| - * |10 | |10| |21| |21| |21| |40| (prio) - * | | | | | | | | | | | | - * | | | | | | | | | | | | - * |node_list.next|<->|nl|<->|nl|<->|nl|<->|nl|<->|nl|<-| - * |node_list.prev|<------------------------------------| + * pl:prio_list (only for plist_node) + * nl:node_list + * HEAD| NODE(S) + * | + * ||------------------------------------| + * ||->|pl|<->|pl|<--------------->|pl|<-| + * | |10| |21| |21| |21| |40| (prio) + * | | | | | | | | | | | + * | | | | | | | | | | | + * |->|nl|<->|nl|<->|nl|<->|nl|<->|nl|<->|nl|<-| + * |-------------------------------------------| * * The nodes on the prio_list list are sorted by priority to simplify * the insertion of new nodes. There are no nodes with duplicate @@ -78,7 +80,6 @@ #include struct plist_head { - struct list_head prio_list; struct list_head node_list; #ifdef CONFIG_DEBUG_PI_LIST raw_spinlock_t *rawlock; @@ -88,7 +89,8 @@ struct plist_head { struct plist_node { int prio; - struct plist_head plist; + struct list_head prio_list; + struct list_head node_list; }; #ifdef CONFIG_DEBUG_PI_LIST @@ -100,7 +102,6 @@ struct plist_node { #endif #define _PLIST_HEAD_INIT(head) \ - .prio_list = LIST_HEAD_INIT((head).prio_list), \ .node_list = LIST_HEAD_INIT((head).node_list) /** @@ -133,7 +134,8 @@ struct plist_node { #define PLIST_NODE_INIT(node, __prio) \ { \ .prio = (__prio), \ - .plist = { _PLIST_HEAD_INIT((node).plist) }, \ + .prio_list = LIST_HEAD_INIT((node).prio_list), \ + .node_list = LIST_HEAD_INIT((node).node_list), \ } /** @@ -144,7 +146,6 @@ struct plist_node { static inline void plist_head_init(struct plist_head *head, spinlock_t *lock) { - INIT_LIST_HEAD(&head->prio_list); INIT_LIST_HEAD(&head->node_list); #ifdef CONFIG_DEBUG_PI_LIST head->spinlock = lock; @@ -160,7 +161,6 @@ plist_head_init(struct plist_head *head, spinlock_t *lock) static inline void plist_head_init_raw(struct plist_head *head, raw_spinlock_t *lock) { - INIT_LIST_HEAD(&head->prio_list); INIT_LIST_HEAD(&head->node_list); #ifdef CONFIG_DEBUG_PI_LIST head->rawlock = lock; @@ -176,7 +176,8 @@ plist_head_init_raw(struct plist_head *head, raw_spinlock_t *lock) static inline void plist_node_init(struct plist_node *node, int prio) { node->prio = prio; - plist_head_init(&node->plist, NULL); + INIT_LIST_HEAD(&node->prio_list); + INIT_LIST_HEAD(&node->node_list); } extern void plist_add(struct plist_node *node, struct plist_head *head); @@ -188,7 +189,7 @@ extern void plist_del(struct plist_node *node, struct plist_head *head); * @head: the head for your list */ #define plist_for_each(pos, head) \ - list_for_each_entry(pos, &(head)->node_list, plist.node_list) + list_for_each_entry(pos, &(head)->node_list, node_list) /** * plist_for_each_safe - iterate safely over a plist of given type @@ -199,7 +200,7 @@ extern void plist_del(struct plist_node *node, struct plist_head *head); * Iterate over a plist of given type, safe against removal of list entry. */ #define plist_for_each_safe(pos, n, head) \ - list_for_each_entry_safe(pos, n, &(head)->node_list, plist.node_list) + list_for_each_entry_safe(pos, n, &(head)->node_list, node_list) /** * plist_for_each_entry - iterate over list of given type @@ -208,7 +209,7 @@ extern void plist_del(struct plist_node *node, struct plist_head *head); * @mem: the name of the list_struct within the struct */ #define plist_for_each_entry(pos, head, mem) \ - list_for_each_entry(pos, &(head)->node_list, mem.plist.node_list) + list_for_each_entry(pos, &(head)->node_list, mem.node_list) /** * plist_for_each_entry_safe - iterate safely over list of given type @@ -220,7 +221,7 @@ extern void plist_del(struct plist_node *node, struct plist_head *head); * Iterate over list of given type, safe against removal of list entry. */ #define plist_for_each_entry_safe(pos, n, head, m) \ - list_for_each_entry_safe(pos, n, &(head)->node_list, m.plist.node_list) + list_for_each_entry_safe(pos, n, &(head)->node_list, m.node_list) /** * plist_head_empty - return !0 if a plist_head is empty @@ -237,7 +238,7 @@ static inline int plist_head_empty(const struct plist_head *head) */ static inline int plist_node_empty(const struct plist_node *node) { - return plist_head_empty(&node->plist); + return list_empty(&node->node_list); } /* All functions below assume the plist_head is not empty. */ @@ -285,7 +286,7 @@ static inline int plist_node_empty(const struct plist_node *node) static inline struct plist_node *plist_first(const struct plist_head *head) { return list_entry(head->node_list.next, - struct plist_node, plist.node_list); + struct plist_node, node_list); } /** @@ -297,7 +298,7 @@ static inline struct plist_node *plist_first(const struct plist_head *head) static inline struct plist_node *plist_last(const struct plist_head *head) { return list_entry(head->node_list.prev, - struct plist_node, plist.node_list); + struct plist_node, node_list); } #endif -- cgit v1.2.3 From 0400a6b0cb756f976bae32ae8db47bfa9853897c Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Wed, 9 Mar 2011 16:00:53 -0500 Subject: NFSv4/4.1: Fix nfs4_schedule_state_recovery abuses nfs4_schedule_state_recovery() should only be used when we need to force the state manager to check the lease. If we just want to start the state manager in order to handle a state recovery situation, we should be using nfs4_schedule_state_manager(). This patch fixes the abuses of nfs4_schedule_state_recovery() by replacing its use with a set of helper functions that do the right thing. Signed-off-by: Trond Myklebust --- include/linux/nfs_fs_sb.h | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h index 6beb33e834ba..3e112de12d8d 100644 --- a/include/linux/nfs_fs_sb.h +++ b/include/linux/nfs_fs_sb.h @@ -68,9 +68,7 @@ struct nfs_client { unsigned char cl_id_uniquifier; u32 cl_cb_ident; /* v4.0 callback identifier */ const struct nfs4_minor_version_ops *cl_mvops; -#endif /* CONFIG_NFS_V4 */ -#ifdef CONFIG_NFS_V4_1 /* The sequence id to use for the next CREATE_SESSION */ u32 cl_seqid; /* The flags used for obtaining the clientid during EXCHANGE_ID */ @@ -78,7 +76,7 @@ struct nfs_client { struct nfs4_session *cl_session; /* sharred session */ struct list_head cl_layouts; struct pnfs_deviceid_cache *cl_devid_cache; /* pNFS deviceid cache */ -#endif /* CONFIG_NFS_V4_1 */ +#endif /* CONFIG_NFS_V4 */ #ifdef CONFIG_NFS_FSCACHE struct fscache_cookie *fscache; /* client index cache cookie */ @@ -183,7 +181,7 @@ struct nfs_server { /* maximum number of slots to use */ #define NFS4_MAX_SLOT_TABLE RPC_MAX_SLOT_TABLE -#if defined(CONFIG_NFS_V4_1) +#if defined(CONFIG_NFS_V4) /* Sessions */ #define SLOT_TABLE_SZ (NFS4_MAX_SLOT_TABLE/(8*sizeof(long))) @@ -223,5 +221,5 @@ struct nfs4_session { struct nfs_client *clp; }; -#endif /* CONFIG_NFS_V4_1 */ +#endif /* CONFIG_NFS_V4 */ #endif -- cgit v1.2.3 From 136028967a283929c6f01518d0700b73fa622d56 Mon Sep 17 00:00:00 2001 From: Fred Isaman Date: Fri, 11 Feb 2011 15:42:38 +0000 Subject: NFS: change nfs_writeback_done to return void The return values are not used by any callers. Signed-off-by: Fred Isaman Signed-off-by: Trond Myklebust --- include/linux/nfs_fs.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h index 6023efa9f5d9..f88522b10a38 100644 --- a/include/linux/nfs_fs.h +++ b/include/linux/nfs_fs.h @@ -501,7 +501,7 @@ extern int nfs_writepage(struct page *page, struct writeback_control *wbc); extern int nfs_writepages(struct address_space *, struct writeback_control *); extern int nfs_flush_incompatible(struct file *file, struct page *page); extern int nfs_updatepage(struct file *, struct page *, unsigned int, unsigned int); -extern int nfs_writeback_done(struct rpc_task *, struct nfs_write_data *); +extern void nfs_writeback_done(struct rpc_task *, struct nfs_write_data *); /* * Try to write back everything synchronously (but check the -- cgit v1.2.3 From 6f78befc417dd7122249706b49520da29ba58451 Mon Sep 17 00:00:00 2001 From: Andy Adamson Date: Tue, 1 Mar 2011 01:34:06 +0000 Subject: NFSv4: remove CONFIG_NFS_V4 from nfs_read_data Cleanup nfs_read_data. We also won't use CONFIG_NFS_V4_1 for additional NFSv4.1 fields in subsequent patches. Signed-off-by: Andy Adamson Signed-off-by: Trond Myklebust --- include/linux/nfs_xdr.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index b0068579bec2..51bfadbe24e2 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -1016,9 +1016,7 @@ struct nfs_read_data { unsigned int npages; /* Max length of pagevec */ struct nfs_readargs args; struct nfs_readres res; -#ifdef CONFIG_NFS_V4 unsigned long timestamp; /* For lease renewal */ -#endif struct page *page_array[NFS_PAGEVEC_SIZE]; }; -- cgit v1.2.3 From 45a52a02072b2a7e265f024cfdb00127e08dd9f2 Mon Sep 17 00:00:00 2001 From: Andy Adamson Date: Tue, 1 Mar 2011 01:34:08 +0000 Subject: NFS move nfs_client initialization into nfs_get_client Now nfs_get_client returns an nfs_client ready to be used no matter if it was found or created. Signed-off-by: Andy Adamson Signed-off-by: Trond Myklebust --- include/linux/nfs_xdr.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 51bfadbe24e2..d159fe733381 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -1040,6 +1040,7 @@ struct nfs_write_data { }; struct nfs_access_entry; +struct nfs_client; /* * RPC procedure vector for NFSv2/NFSv3 demuxing @@ -1104,6 +1105,8 @@ struct nfs_rpc_ops { struct nfs_open_context *ctx, int open_flags, struct iattr *iattr); + int (*init_client) (struct nfs_client *, const struct rpc_timeout *, + const char *, rpc_authflavor_t, int); }; /* -- cgit v1.2.3 From d3b4c9d76738df49a7db7682c2518a0ef9f7391d Mon Sep 17 00:00:00 2001 From: Andy Adamson Date: Tue, 1 Mar 2011 01:34:10 +0000 Subject: NFSv4.1: new flag for state renewal check Data servers not sharing a session with the mount MDS always have an empty cl_superblocks list. Replace the cl_superblocks empty list check to see if it is time to shut down renewd with the NFS_CS_STOP_RENEW bit which is not set by such a data server. Signed-off-by: Andy Adamson Signed-off-by: Trond Myklebust --- include/linux/nfs_fs_sb.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h index 3e112de12d8d..0bac4176e505 100644 --- a/include/linux/nfs_fs_sb.h +++ b/include/linux/nfs_fs_sb.h @@ -30,6 +30,7 @@ struct nfs_client { #define NFS_CS_CALLBACK 1 /* - callback started */ #define NFS_CS_IDMAP 2 /* - idmap started */ #define NFS_CS_RENEWD 3 /* - renewd started */ +#define NFS_CS_STOP_RENEW 4 /* no more state to renew */ struct sockaddr_storage cl_addr; /* server identifier */ size_t cl_addrlen; char * cl_hostname; /* hostname of server */ -- cgit v1.2.3 From d6fb79d433d0a34c36bdf74eaf90857193a6261f Mon Sep 17 00:00:00 2001 From: Andy Adamson Date: Tue, 1 Mar 2011 01:34:11 +0000 Subject: NFSv4.1: new flag for lease time check Data servers cannot send nfs4_proc_get_lease_time. but still need to setup state renewal. Add the NFS_CS_CHECK_LEASE_TIME bit to indicate if the lease time can be checked. Signed-off-by: Andy Adamson Signed-off-by: Trond Myklebust --- include/linux/nfs_fs_sb.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h index 0bac4176e505..c00d4ec47ec3 100644 --- a/include/linux/nfs_fs_sb.h +++ b/include/linux/nfs_fs_sb.h @@ -31,6 +31,7 @@ struct nfs_client { #define NFS_CS_IDMAP 2 /* - idmap started */ #define NFS_CS_RENEWD 3 /* - renewd started */ #define NFS_CS_STOP_RENEW 4 /* no more state to renew */ +#define NFS_CS_CHECK_LEASE_TIME 5 /* need to check lease time */ struct sockaddr_storage cl_addr; /* server identifier */ size_t cl_addrlen; char * cl_hostname; /* hostname of server */ -- cgit v1.2.3 From 94ad1c80e28f9700c84b4d28d1e5302ddf63a6fd Mon Sep 17 00:00:00 2001 From: Fred Isaman Date: Tue, 1 Mar 2011 01:34:14 +0000 Subject: NFSv4.1: coelesce across layout stripes Add a pg_test layout driver hook which is used to avoid coelescing I/O across layout stripes. Signed-off-by: Andy Adamson Signed-off-by: Andy Adamson Signed-off-by: Dean Hildebrand Signed-off-by: Fred Isaman Signed-off-by: Fred Isaman Signed-off-by: Benny Halevy Signed-off-by: Boaz Harrosh Signed-off-by: Oleg Drokin Signed-off-by: Tao Guo Signed-off-by: Trond Myklebust --- include/linux/nfs_page.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nfs_page.h b/include/linux/nfs_page.h index d55cee73f634..4eaf27a1282d 100644 --- a/include/linux/nfs_page.h +++ b/include/linux/nfs_page.h @@ -62,6 +62,8 @@ struct nfs_pageio_descriptor { int (*pg_doio)(struct inode *, struct list_head *, unsigned int, size_t, int); int pg_ioflags; int pg_error; + struct pnfs_layout_segment *pg_lseg; + int (*pg_test)(struct nfs_pageio_descriptor *, struct nfs_page *, struct nfs_page *); }; #define NFS_WBACK_BUSY(req) (test_bit(PG_BUSY,&(req)->wb_flags)) -- cgit v1.2.3 From bae724ef95b0d0a1f4518f5451e7c8aabc41f820 Mon Sep 17 00:00:00 2001 From: Fred Isaman Date: Tue, 1 Mar 2011 01:34:15 +0000 Subject: NFSv4.1: shift pnfs_update_layout locations Move the pnfs_update_layout call location to nfs_pageio_do_add_request(). Grab the lseg sent in the doio function to nfs_read_rpcsetup and attach it to each nfs_read_data so it can be sent to the layout driver. Signed-off-by: Andy Adamson Signed-off-by: Andy Adamson Signed-off-by: Dean Hildebrand Signed-off-by: Fred Isaman Signed-off-by: Fred Isaman Signed-off-by: Benny Halevy Signed-off-by: Boaz Harrosh Signed-off-by: Oleg Drokin Signed-off-by: Tao Guo Signed-off-by: Trond Myklebust --- include/linux/nfs_page.h | 4 ++-- include/linux/nfs_xdr.h | 1 + 2 files changed, 3 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/nfs_page.h b/include/linux/nfs_page.h index 4eaf27a1282d..ba88ff4f8186 100644 --- a/include/linux/nfs_page.h +++ b/include/linux/nfs_page.h @@ -59,7 +59,7 @@ struct nfs_pageio_descriptor { unsigned int pg_base; struct inode *pg_inode; - int (*pg_doio)(struct inode *, struct list_head *, unsigned int, size_t, int); + int (*pg_doio)(struct inode *, struct list_head *, unsigned int, size_t, int, struct pnfs_layout_segment *); int pg_ioflags; int pg_error; struct pnfs_layout_segment *pg_lseg; @@ -81,7 +81,7 @@ extern int nfs_scan_list(struct nfs_inode *nfsi, struct list_head *dst, pgoff_t idx_start, unsigned int npages, int tag); extern void nfs_pageio_init(struct nfs_pageio_descriptor *desc, struct inode *inode, - int (*doio)(struct inode *, struct list_head *, unsigned int, size_t, int), + int (*doio)(struct inode *, struct list_head *, unsigned int, size_t, int, struct pnfs_layout_segment *), size_t bsize, int how); extern int nfs_pageio_add_request(struct nfs_pageio_descriptor *, diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index d159fe733381..560923e28723 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -1017,6 +1017,7 @@ struct nfs_read_data { struct nfs_readargs args; struct nfs_readres res; unsigned long timestamp; /* For lease renewal */ + struct pnfs_layout_segment *lseg; struct page *page_array[NFS_PAGEVEC_SIZE]; }; -- cgit v1.2.3 From 64419a9b20938d9070fdd8c58c2fa23c911915f8 Mon Sep 17 00:00:00 2001 From: Andy Adamson Date: Tue, 1 Mar 2011 01:34:16 +0000 Subject: NFSv4.1: generic read Separate the rpc run portion of nfs_read_rpcsetup into a new function nfs_initiate_read that is called for normal NFS I/O. Add a pNFS read_pagelist function that is called instead of nfs_intitate_read for pNFS reads. Signed-off-by: Andy Adamson Signed-off-by: Boaz Harrosh Signed-off-by: Dean Hildebrand Signed-off-by: Fred Isaman Signed-off-by: Fred Isaman Signed-off-by: Mike Sager Signed-off-by: Mingyang Guo Signed-off-by: Ricardo Labiaga Signed-off-by: Tao Guo Signed-off-by: Andy Adamson Signed-off-by: Benny Halevy Signed-off-by: Trond Myklebust --- include/linux/nfs_iostat.h | 1 + include/linux/nfs_xdr.h | 1 + 2 files changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nfs_iostat.h b/include/linux/nfs_iostat.h index 68b10f5f8907..37a143732d02 100644 --- a/include/linux/nfs_iostat.h +++ b/include/linux/nfs_iostat.h @@ -113,6 +113,7 @@ enum nfs_stat_eventcounters { NFSIOS_SHORTREAD, NFSIOS_SHORTWRITE, NFSIOS_DELAY, + NFSIOS_PNFS_READ, __NFSIOS_COUNTSMAX, }; diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 560923e28723..9d2b9dae277d 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -1018,6 +1018,7 @@ struct nfs_read_data { struct nfs_readres res; unsigned long timestamp; /* For lease renewal */ struct pnfs_layout_segment *lseg; + const struct rpc_call_ops *mds_ops; struct page *page_array[NFS_PAGEVEC_SIZE]; }; -- cgit v1.2.3 From d83217c13531fd59730d77b5c2284e90e56c0a50 Mon Sep 17 00:00:00 2001 From: Andy Adamson Date: Tue, 1 Mar 2011 01:34:17 +0000 Subject: NFSv4.1: data server connection Introduce a data server set_client and init session following the nfs4_set_client and nfs4_init_session convention. Once a new nfs_client is on the nfs_client_list, the nfs_client cl_cons_state serializes access to creating an nfs_client struct with matching properties. Use the new nfs_get_client() that initializes new clients. Signed-off-by: Andy Adamson Signed-off-by: Trond Myklebust --- include/linux/nfs_xdr.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 9d2b9dae277d..c66ff7fe1b6b 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -1018,6 +1018,7 @@ struct nfs_read_data { struct nfs_readres res; unsigned long timestamp; /* For lease renewal */ struct pnfs_layout_segment *lseg; + struct nfs_client *ds_clp; /* pNFS data server */ const struct rpc_call_ops *mds_ops; struct page *page_array[NFS_PAGEVEC_SIZE]; }; -- cgit v1.2.3 From dc70d7b3189597f313df7bd2da849cfc39063b15 Mon Sep 17 00:00:00 2001 From: Andy Adamson Date: Tue, 1 Mar 2011 01:34:19 +0000 Subject: NFSv4.1: filelayout read Attempt a pNFS file layout read by setting up the nfs_read_data struct and calling nfs_initiate_read with the data server rpc client and the filelayout rpc call ops. Error handling is implemented in a subsequent patch. Signed-off-by: Andy Adamson Signed-off-by: Dean Hildebrand Signed-off-by: Fred Isaman Signed-off-by: Fred Isaman Signed-off-by: Mingyang Guo Signed-off-by: Oleg Drokin Signed-off-by: Ricardo Labiaga Tested-by: Guo Mingyang Signed-off-by: Andy Adamson Signed-off-by: Benny Halevy Signed-off-by: Trond Myklebust --- include/linux/nfs_xdr.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index c66ff7fe1b6b..b63faef5052e 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -1020,6 +1020,7 @@ struct nfs_read_data { struct pnfs_layout_segment *lseg; struct nfs_client *ds_clp; /* pNFS data server */ const struct rpc_call_ops *mds_ops; + __u64 mds_offset; struct page *page_array[NFS_PAGEVEC_SIZE]; }; -- cgit v1.2.3 From cbdabc7f8bf14ca1d40ab1cb86f64b3bc09716e8 Mon Sep 17 00:00:00 2001 From: Andy Adamson Date: Tue, 1 Mar 2011 01:34:20 +0000 Subject: NFSv4.1: filelayout async error handler Use our own async error handler. Mark the layout as failed and retry i/o through the MDS on specified errors. Update the mds_offset in nfs_readpage_retry so that a failed short-read retry to a DS gets correctly resent through the MDS. Signed-off-by: Andy Adamson Signed-off-by: Trond Myklebust --- include/linux/nfs_xdr.h | 1 + include/linux/sunrpc/clnt.h | 1 + 2 files changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index b63faef5052e..eb0e87084353 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -1020,6 +1020,7 @@ struct nfs_read_data { struct pnfs_layout_segment *lseg; struct nfs_client *ds_clp; /* pNFS data server */ const struct rpc_call_ops *mds_ops; + int (*read_done_cb) (struct rpc_task *task, struct nfs_read_data *data); __u64 mds_offset; struct page *page_array[NFS_PAGEVEC_SIZE]; }; diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h index ef9476a36ff7..db7bcaf7c5bd 100644 --- a/include/linux/sunrpc/clnt.h +++ b/include/linux/sunrpc/clnt.h @@ -129,6 +129,7 @@ struct rpc_create_args { struct rpc_clnt *rpc_create(struct rpc_create_args *args); struct rpc_clnt *rpc_bind_new_program(struct rpc_clnt *, struct rpc_program *, u32); +void rpc_task_reset_client(struct rpc_task *task, struct rpc_clnt *clnt); struct rpc_clnt *rpc_clone_client(struct rpc_clnt *); void rpc_shutdown_client(struct rpc_clnt *); void rpc_release_client(struct rpc_clnt *); -- cgit v1.2.3 From ea8eecdd11ee6becd09c095c8efa88aa7df95961 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Tue, 1 Mar 2011 01:34:21 +0000 Subject: NFSv4.1 move deviceid cache to filelayout driver No need for generic cache with only one user. Keep a simple hash of deviceids in the filelayout driver. Signed-off-by: Christoph Hellwig Acked-by: Andy Adamson Signed-off-by: Trond Myklebust --- include/linux/nfs_fs_sb.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h index c00d4ec47ec3..0cbf109a4056 100644 --- a/include/linux/nfs_fs_sb.h +++ b/include/linux/nfs_fs_sb.h @@ -77,7 +77,6 @@ struct nfs_client { u32 cl_exchange_flags; struct nfs4_session *cl_session; /* sharred session */ struct list_head cl_layouts; - struct pnfs_deviceid_cache *cl_devid_cache; /* pNFS deviceid cache */ #endif /* CONFIG_NFS_V4 */ #ifdef CONFIG_NFS_FSCACHE -- cgit v1.2.3 From b029bc9b0880cbaf999f580c0ea8f06dd274fc77 Mon Sep 17 00:00:00 2001 From: Fred Isaman Date: Thu, 3 Mar 2011 15:13:42 +0000 Subject: NFSv4.1: add callback to nfs4_write_done Add callback that pnfs layout driver can use to do its own handling of data server WRITE response. Signed-off-by: Fred Isaman Signed-off-by: Trond Myklebust --- include/linux/nfs_xdr.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index eb0e87084353..21cd41ddbca6 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -1038,6 +1038,7 @@ struct nfs_write_data { unsigned int npages; /* Max length of pagevec */ struct nfs_writeargs args; /* argument struct */ struct nfs_writeres res; /* result struct */ + int (*write_done_cb) (struct rpc_task *task, struct nfs_write_data *data); #ifdef CONFIG_NFS_V4 unsigned long timestamp; /* For lease renewal */ #endif -- cgit v1.2.3 From 5053aa568d4017aeb1fa35247d4ad96be262920f Mon Sep 17 00:00:00 2001 From: Fred Isaman Date: Thu, 3 Mar 2011 15:13:43 +0000 Subject: NFSv4.1: Send lseg down into nfs_write_rpcsetup We grab the lseg sent in from the doio function and attach it to each struct nfs_write_data created. This is how the lseg will be sent to the layout driver. Signed-off-by: Fred Isaman Signed-off-by: Trond Myklebust --- include/linux/nfs_xdr.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 21cd41ddbca6..09d96812d6d0 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -1038,6 +1038,7 @@ struct nfs_write_data { unsigned int npages; /* Max length of pagevec */ struct nfs_writeargs args; /* argument struct */ struct nfs_writeres res; /* result struct */ + struct pnfs_layout_segment *lseg; int (*write_done_cb) (struct rpc_task *task, struct nfs_write_data *data); #ifdef CONFIG_NFS_V4 unsigned long timestamp; /* For lease renewal */ -- cgit v1.2.3 From 0382b74409c6b9ef12c952b50bb44f557a361a43 Mon Sep 17 00:00:00 2001 From: Andy Adamson Date: Thu, 3 Mar 2011 15:13:45 +0000 Subject: NFSv4.1: implement generic pnfs layer write switch Signed-off-by: Andy Adamson Signed-off-by: Boaz Harrosh Signed-off-by: Dean Hildebrand Signed-off-by: Fred Isaman Signed-off-by: J. Bruce Fields Signed-off-by: Mike Sager Signed-off-by: Ricardo Labiaga Signed-off-by: Tao Guo Signed-off-by: Andy Adamson Signed-off-by: Benny Halevy Signed-off-by: Fred Isaman Signed-off-by: Trond Myklebust --- include/linux/nfs_iostat.h | 1 + include/linux/nfs_xdr.h | 1 + 2 files changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nfs_iostat.h b/include/linux/nfs_iostat.h index 37a143732d02..8866bb3502ee 100644 --- a/include/linux/nfs_iostat.h +++ b/include/linux/nfs_iostat.h @@ -114,6 +114,7 @@ enum nfs_stat_eventcounters { NFSIOS_SHORTWRITE, NFSIOS_DELAY, NFSIOS_PNFS_READ, + NFSIOS_PNFS_WRITE, __NFSIOS_COUNTSMAX, }; diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 09d96812d6d0..c82ad33cffe1 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -1039,6 +1039,7 @@ struct nfs_write_data { struct nfs_writeargs args; /* argument struct */ struct nfs_writeres res; /* result struct */ struct pnfs_layout_segment *lseg; + const struct rpc_call_ops *mds_ops; int (*write_done_cb) (struct rpc_task *task, struct nfs_write_data *data); #ifdef CONFIG_NFS_V4 unsigned long timestamp; /* For lease renewal */ -- cgit v1.2.3 From a69aef1496726ed88386dad65abfcc8cd3195304 Mon Sep 17 00:00:00 2001 From: Fred Isaman Date: Thu, 3 Mar 2011 15:13:47 +0000 Subject: NFSv4.1: pnfs filelayout driver write Allows the pnfs filelayout driver to write to the data servers. Note that COMMIT to data servers will be implemented in a future patch. To avoid improper behavior, for the moment any WRITE to a data server that would also require a COMMIT to the data server is sent NFS_FILE_SYNC. Signed-off-by: Andy Adamson Signed-off-by: Dean Hildebrand Signed-off-by: Fred Isaman Signed-off-by: Mingyang Guo Signed-off-by: Oleg Drokin Signed-off-by: Ricardo Labiaga Signed-off-by: Andy Adamson Signed-off-by: Benny Halevy Signed-off-by: Fred Isaman Signed-off-by: Trond Myklebust --- include/linux/nfs_xdr.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index c82ad33cffe1..3440f5ab0f54 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -1039,11 +1039,13 @@ struct nfs_write_data { struct nfs_writeargs args; /* argument struct */ struct nfs_writeres res; /* result struct */ struct pnfs_layout_segment *lseg; + struct nfs_client *ds_clp; /* pNFS data server */ const struct rpc_call_ops *mds_ops; int (*write_done_cb) (struct rpc_task *task, struct nfs_write_data *data); #ifdef CONFIG_NFS_V4 unsigned long timestamp; /* For lease renewal */ #endif + __u64 mds_offset; /* Filelayout dense stripe */ struct page *page_array[NFS_PAGEVEC_SIZE]; }; -- cgit v1.2.3 From c76069bda0f17cd3e153e54d9ac01242909c6b15 Mon Sep 17 00:00:00 2001 From: Fred Isaman Date: Thu, 3 Mar 2011 15:13:48 +0000 Subject: NFSv4.1: rearrange ->doio args This will make it possible to clear the lseg pointer in the same function as it is put, instead of in the caller nfs_pageio_doio(). Signed-off-by: Fred Isaman Signed-off-by: Trond Myklebust --- include/linux/nfs_page.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/nfs_page.h b/include/linux/nfs_page.h index ba88ff4f8186..90907ada6d52 100644 --- a/include/linux/nfs_page.h +++ b/include/linux/nfs_page.h @@ -59,7 +59,7 @@ struct nfs_pageio_descriptor { unsigned int pg_base; struct inode *pg_inode; - int (*pg_doio)(struct inode *, struct list_head *, unsigned int, size_t, int, struct pnfs_layout_segment *); + int (*pg_doio)(struct nfs_pageio_descriptor *); int pg_ioflags; int pg_error; struct pnfs_layout_segment *pg_lseg; @@ -81,7 +81,7 @@ extern int nfs_scan_list(struct nfs_inode *nfsi, struct list_head *dst, pgoff_t idx_start, unsigned int npages, int tag); extern void nfs_pageio_init(struct nfs_pageio_descriptor *desc, struct inode *inode, - int (*doio)(struct inode *, struct list_head *, unsigned int, size_t, int, struct pnfs_layout_segment *), + int (*doio)(struct nfs_pageio_descriptor *desc), size_t bsize, int how); extern int nfs_pageio_add_request(struct nfs_pageio_descriptor *, -- cgit v1.2.3 From e4fd72a17d2703cfd626c55893ac4ca7e7d81ce9 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 22 Feb 2011 15:44:31 -0800 Subject: NFSv4: cleanup idmapper functions to take an nfs_server argument ...instead of the nfs_client. Signed-off-by: Trond Myklebust --- include/linux/nfs_idmap.h | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/nfs_idmap.h b/include/linux/nfs_idmap.h index e8352dc5afb5..ae7d6a380dae 100644 --- a/include/linux/nfs_idmap.h +++ b/include/linux/nfs_idmap.h @@ -65,6 +65,7 @@ struct idmap_msg { /* Forward declaration to make this header independent of others */ struct nfs_client; +struct nfs_server; #ifdef CONFIG_NFS_USE_NEW_IDMAPPER @@ -96,10 +97,10 @@ void nfs_idmap_delete(struct nfs_client *); #endif /* CONFIG_NFS_USE_NEW_IDMAPPER */ -int nfs_map_name_to_uid(struct nfs_client *, const char *, size_t, __u32 *); -int nfs_map_group_to_gid(struct nfs_client *, const char *, size_t, __u32 *); -int nfs_map_uid_to_name(struct nfs_client *, __u32, char *, size_t); -int nfs_map_gid_to_group(struct nfs_client *, __u32, char *, size_t); +int nfs_map_name_to_uid(const struct nfs_server *, const char *, size_t, __u32 *); +int nfs_map_group_to_gid(const struct nfs_server *, const char *, size_t, __u32 *); +int nfs_map_uid_to_name(const struct nfs_server *, __u32, char *, size_t); +int nfs_map_gid_to_group(const struct nfs_server *, __u32, char *, size_t); extern unsigned int nfs_idmap_cache_timeout; #endif /* __KERNEL__ */ -- cgit v1.2.3 From b064eca2cf6440bf9d5843b24cc4010624031694 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 22 Feb 2011 15:44:32 -0800 Subject: NFSv4: Send unmapped uid/gids to the server when using auth_sys The new behaviour is enabled using the new module parameter 'nfs4_disable_idmapping'. Note that if the server rejects an unmapped uid or gid, then the client will automatically switch back to using the idmapper. Signed-off-by: Trond Myklebust --- include/linux/nfs_fs_sb.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h index 0cbf109a4056..216cea5db0aa 100644 --- a/include/linux/nfs_fs_sb.h +++ b/include/linux/nfs_fs_sb.h @@ -177,6 +177,7 @@ struct nfs_server { #define NFS_CAP_CTIME (1U << 12) #define NFS_CAP_MTIME (1U << 13) #define NFS_CAP_POSIX_LOCK (1U << 14) +#define NFS_CAP_UIDGID_NOMAP (1U << 15) /* maximum number of slots to use */ -- cgit v1.2.3 From ee398ba97dd76ed53bed548dec648d918af4004c Mon Sep 17 00:00:00 2001 From: Benoit Goby Date: Wed, 9 Mar 2011 16:28:54 -0800 Subject: usb: otg: Add ulpi viewport access ops Add generic access ops for controllers with a ulpi viewport register (e.g. Chipidea/ARC based controllers). Signed-off-by: Benoit Goby Signed-off-by: Greg Kroah-Hartman --- include/linux/usb/ulpi.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb/ulpi.h b/include/linux/usb/ulpi.h index 82b1507f4735..9595796d62ed 100644 --- a/include/linux/usb/ulpi.h +++ b/include/linux/usb/ulpi.h @@ -184,4 +184,9 @@ struct otg_transceiver *otg_ulpi_create(struct otg_io_access_ops *ops, unsigned int flags); +#ifdef CONFIG_USB_ULPI_VIEWPORT +/* access ops for controllers with a viewport register */ +extern struct otg_io_access_ops ulpi_viewport_access_ops; +#endif + #endif /* __LINUX_USB_ULPI_H */ -- cgit v1.2.3 From 79ad3b5add4a683af02d1b51ccb699d1b01f1fbf Mon Sep 17 00:00:00 2001 From: Benoit Goby Date: Wed, 9 Mar 2011 16:28:56 -0800 Subject: usb: host: Add EHCI driver for NVIDIA Tegra SoCs The Tegra 2 SoC has 3 EHCI compatible USB controllers. This patch adds the necessary glue to allow the ehci-hcd driver to work on Tegra 2 SoCs. The platform data is used to configure board-specific phy settings and to configure the operating mode, as one of the ports may be used as a otg port. For additional power saving, the driver supports powering down the phy on bus suspend when it is used, for example, to connect an internal device that use an out-of-band remote wakeup mechanism (e.g. a gpio). Signed-off-by: Benoit Goby Signed-off-by: Greg Kroah-Hartman --- include/linux/platform_data/tegra_usb.h | 31 +++++++++++++++++++++++++++++++ include/linux/usb/ehci_def.h | 4 +++- 2 files changed, 34 insertions(+), 1 deletion(-) create mode 100644 include/linux/platform_data/tegra_usb.h (limited to 'include/linux') diff --git a/include/linux/platform_data/tegra_usb.h b/include/linux/platform_data/tegra_usb.h new file mode 100644 index 000000000000..6bca5b569acb --- /dev/null +++ b/include/linux/platform_data/tegra_usb.h @@ -0,0 +1,31 @@ +/* + * Copyright (C) 2010 Google, Inc. + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#ifndef _TEGRA_USB_H_ +#define _TEGRA_USB_H_ + +enum tegra_usb_operating_modes { + TEGRA_USB_DEVICE, + TEGRA_USB_HOST, + TEGRA_USB_OTG, +}; + +struct tegra_ehci_platform_data { + enum tegra_usb_operating_modes operating_mode; + /* power down the phy on bus suspend */ + int power_down_on_bus_suspend; + void *phy_config; +}; + +#endif /* _TEGRA_USB_H_ */ diff --git a/include/linux/usb/ehci_def.h b/include/linux/usb/ehci_def.h index 2e262cb15425..656380245198 100644 --- a/include/linux/usb/ehci_def.h +++ b/include/linux/usb/ehci_def.h @@ -127,7 +127,9 @@ struct ehci_regs { #define PORT_WKDISC_E (1<<21) /* wake on disconnect (enable) */ #define PORT_WKCONN_E (1<<20) /* wake on connect (enable) */ /* 19:16 for port testing */ -#define PORT_TEST_PKT (0x4<<16) /* Port Test Control - packet test */ +#define PORT_TEST(x) (((x)&0xf)<<16) /* Port Test Control */ +#define PORT_TEST_PKT PORT_TEST(0x4) /* Port Test Control - packet test */ +#define PORT_TEST_FORCE PORT_TEST(0x5) /* Port Test Control - force enable */ #define PORT_LED_OFF (0<<14) #define PORT_LED_AMBER (1<<14) #define PORT_LED_GREEN (2<<14) -- cgit v1.2.3 From 0b7bb77fd55903ff9dc7c0474c49002aa6b9c78c Mon Sep 17 00:00:00 2001 From: Peter Korsgaard Date: Wed, 9 Mar 2011 17:56:30 +0100 Subject: gpio/mcp23s08: support mcp23s17 variant mpc23s17 is very similar to the mcp23s08, except that registers are 16bit wide, so extend the interface to work with both variants. The s17 variant also has an additional address pin, so adjust platform data structure to support up to 8 devices per SPI chipselect. Signed-off-by: Peter Korsgaard Signed-off-by: Grant Likely --- include/linux/spi/mcp23s08.h | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/spi/mcp23s08.h b/include/linux/spi/mcp23s08.h index 22ef107d7704..c42cff8ca191 100644 --- a/include/linux/spi/mcp23s08.h +++ b/include/linux/spi/mcp23s08.h @@ -2,21 +2,24 @@ /* FIXME driver should be able to handle IRQs... */ struct mcp23s08_chip_info { - bool is_present; /* true iff populated */ - u8 pullups; /* BIT(x) means enable pullup x */ + bool is_present; /* true if populated */ + unsigned pullups; /* BIT(x) means enable pullup x */ }; struct mcp23s08_platform_data { - /* Four slaves (numbered 0..3) can share one SPI chipselect, and - * will provide 8..32 GPIOs using 1..4 gpio_chip instances. + /* For mcp23s08, up to 4 slaves (numbered 0..3) can share one SPI + * chipselect, each providing 1 gpio_chip instance with 8 gpios. + * For mpc23s17, up to 8 slaves (numbered 0..7) can share one SPI + * chipselect, each providing 1 gpio_chip (port A + port B) with + * 16 gpios. */ - struct mcp23s08_chip_info chip[4]; + struct mcp23s08_chip_info chip[8]; /* "base" is the number of the first GPIO. Dynamic assignment is * not currently supported, and even if there are gaps in chip * addressing the GPIO numbers are sequential .. so for example * if only slaves 0 and 3 are present, their GPIOs range from - * base to base+15. + * base to base+15 (or base+31 for s17 variant). */ unsigned base; -- cgit v1.2.3 From d209a699a0b975ad47f399d70ddc3791f1b84496 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Fri, 11 Mar 2011 21:22:14 +0100 Subject: genirq: Add chip flag to force mask on suspend On suspend we disable all interrupts in the core code, but this does not mask the interrupt line in the default implementation as we use a lazy disable approach. That means we mark the interrupt disabled, but leave the hardware unmasked. That's an optimization because we avoid the hardware access for the common case where no interrupt happens after we marked it disabled. If an interrupt happens, then the interrupt flow handler masks the line at the hardware level and marks it pending. Suspend makes use of this delayed disable as it "disables" all interrupts when preparing the suspend transition. Right before the system goes into hardware suspend state it checks whether one of the interrupts which is marked as a wakeup interrupt came in after disabling it. Most interrupt chips have a separate register which selects the interrupts which can wake up the system from suspend, so we don't have to mask any on the non wakeup interrupts. But now we have to deal with brilliant designed hardware which lacks such a wakeup configuration facility. For such hardware it's necessary to mask all non wakeup interrupts before going into suspend in order to avoid the wakeup from random interrupts. Rather than working around this in the affected interrupt chip implementations we can solve this elegant in the core code itself. Add a flag IRQCHIP_MASK_ON_SUSPEND which can be set by the irq chip implementation to indicate, that the interrupts which are not selected as wakeup sources must be masked in the suspend path. Mask them in the loop which checks the wakeup interrupts pending flag. Signed-off-by: Thomas Gleixner Reviewed-by: Abhijeet Dharmapurikar LKML-Reference: --- include/linux/irq.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index ff62d0145b8f..1d3577f30d45 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -330,10 +330,12 @@ struct irq_chip { * * IRQCHIP_SET_TYPE_MASKED: Mask before calling chip.irq_set_type() * IRQCHIP_EOI_IF_HANDLED: Only issue irq_eoi() when irq was handled + * IRQCHIP_MASK_ON_SUSPEND: Mask non wake irqs in the suspend path */ enum { IRQCHIP_SET_TYPE_MASKED = (1 << 0), IRQCHIP_EOI_IF_HANDLED = (1 << 1), + IRQCHIP_MASK_ON_SUSPEND = (1 << 2), }; /* This include will go away once we isolated irq_desc usage to core code */ -- cgit v1.2.3 From 4c9483b2fb5d2548c3cc1fe03cdd4484ceeb5d1c Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Sat, 12 Mar 2011 16:22:43 -0500 Subject: ipv6: Convert to use flowi6 where applicable. Signed-off-by: David S. Miller --- include/linux/icmpv6.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/icmpv6.h b/include/linux/icmpv6.h index 4c4c74ec5987..ba45e6bc0764 100644 --- a/include/linux/icmpv6.h +++ b/include/linux/icmpv6.h @@ -183,10 +183,10 @@ extern void icmpv6_cleanup(void); extern void icmpv6_param_prob(struct sk_buff *skb, u8 code, int pos); -struct flowi; +struct flowi6; struct in6_addr; extern void icmpv6_flow_init(struct sock *sk, - struct flowi *fl, + struct flowi6 *fl6, u8 type, const struct in6_addr *saddr, const struct in6_addr *daddr, -- cgit v1.2.3 From f831c963b5c20bec230edce89e25f369996be5db Mon Sep 17 00:00:00 2001 From: Allan Stephens Date: Fri, 25 Feb 2011 14:22:11 -0500 Subject: tipc: Eliminate configuration for maximum number of cluster nodes Gets rid of the need for users to specify the maximum number of cluster nodes supported by TIPC. TIPC now automatically provides support for all 4K nodes allowed by its addressing scheme. Note: This change sets TIPC's memory usage to the amount used by a maximum size node table with 4K entries. An upcoming patch that converts the node table from a linear array to a hash table will compact the node table to a more efficient design, but for clarity it is nice to have all the Kconfig infrastruture go away separately. Signed-off-by: Allan Stephens Signed-off-by: Paul Gortmaker --- include/linux/tipc_config.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/tipc_config.h b/include/linux/tipc_config.h index 011556fcef04..64aba5a0e9c7 100644 --- a/include/linux/tipc_config.h +++ b/include/linux/tipc_config.h @@ -89,7 +89,7 @@ #define TIPC_CMD_GET_MAX_SUBSCR 0x4006 /* tx none, rx unsigned */ #define TIPC_CMD_GET_MAX_ZONES 0x4007 /* obsoleted */ #define TIPC_CMD_GET_MAX_CLUSTERS 0x4008 /* obsoleted */ -#define TIPC_CMD_GET_MAX_NODES 0x4009 /* tx none, rx unsigned */ +#define TIPC_CMD_GET_MAX_NODES 0x4009 /* obsoleted */ #define TIPC_CMD_GET_MAX_SLAVES 0x400A /* obsoleted */ #define TIPC_CMD_GET_NETID 0x400B /* tx none, rx unsigned */ @@ -115,7 +115,7 @@ #define TIPC_CMD_SET_MAX_SUBSCR 0x8006 /* tx unsigned, rx none */ #define TIPC_CMD_SET_MAX_ZONES 0x8007 /* obsoleted */ #define TIPC_CMD_SET_MAX_CLUSTERS 0x8008 /* obsoleted */ -#define TIPC_CMD_SET_MAX_NODES 0x8009 /* tx unsigned, rx none */ +#define TIPC_CMD_SET_MAX_NODES 0x8009 /* obsoleted */ #define TIPC_CMD_SET_MAX_SLAVES 0x800A /* obsoleted */ #define TIPC_CMD_SET_NETID 0x800B /* tx unsigned, rx none */ -- cgit v1.2.3 From 50d3e6399a61fca53c5c440a79f71299db66b803 Mon Sep 17 00:00:00 2001 From: Allan Stephens Date: Mon, 28 Feb 2011 14:56:15 -0500 Subject: tipc: Correct misnamed references to neighbor discovery domain Renames items that are improperly labelled as "network scope" items (which are represented by simple integer values) rather than "network domain" items (which are represented by -type network addresses). This change is purely cosmetic, and does not affect the operation of TIPC. Signed-off-by: Allan Stephens Signed-off-by: Paul Gortmaker --- include/linux/tipc_config.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/tipc_config.h b/include/linux/tipc_config.h index 64aba5a0e9c7..0db239590b4d 100644 --- a/include/linux/tipc_config.h +++ b/include/linux/tipc_config.h @@ -202,7 +202,7 @@ struct tipc_link_info { struct tipc_bearer_config { __be32 priority; /* Range [1,31]. Override per link */ - __be32 detect_scope; + __be32 disc_domain; /* describing desired nodes */ char name[TIPC_MAX_BEARER_NAME]; }; -- cgit v1.2.3 From da13051cc756756f10b2da8ea97b05bdf84bd7bb Mon Sep 17 00:00:00 2001 From: Sarah Sharp Date: Tue, 30 Nov 2010 15:55:51 -0800 Subject: USB: Remove bitmap #define from hcd.h Using a #define to redefine a common variable name is a bad thing, especially when the #define is in a header. include/linux/usb/hcd.h redefined bitmap to DeviceRemovable to avoid typing a long field in the hub descriptor. This has unintended side effects for files like drivers/usb/core/devio.c that include that file, since another header included after hcd.h has different variables named bitmap. Remove the bitmap #define and replace instances of it in the host controller code. Cleanup the spaces around function calls and square brackets while we're at it. Signed-off-by: Sarah Sharp Cc: Nobuhiro Iwamatsu Cc: Inaky Perez-Gonzalez Cc: Tony Olech Cc: "Robert P. J. Day" Cc: Max Vozeler Cc: Tejun Heo Cc: Yoshihiro Shimoda Cc: Rodolfo Giometti Cc: Mike Frysinger Cc: Anton Vorontsov Cc: Sebastian Siewior Cc: Lothar Wassmann Cc: Olav Kongas Cc: Martin Fuzzey Cc: Alan Stern Cc: David Brownell --- include/linux/usb/hcd.h | 7 ------- 1 file changed, 7 deletions(-) (limited to 'include/linux') diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h index 8b65068c6af9..0be61970074e 100644 --- a/include/linux/usb/hcd.h +++ b/include/linux/usb/hcd.h @@ -639,13 +639,6 @@ static inline void usbmon_urb_complete(struct usb_bus *bus, struct urb *urb, #endif /* CONFIG_USB_MON || CONFIG_USB_MON_MODULE */ -/*-------------------------------------------------------------------------*/ - -/* hub.h ... DeviceRemovable in 2.4.2-ac11, gone in 2.4.10 */ -/* bleech -- resurfaced in 2.4.11 or 2.4.12 */ -#define bitmap DeviceRemovable - - /*-------------------------------------------------------------------------*/ /* random stuff */ -- cgit v1.2.3 From dbe79bbe9dcb22cb3651c46f18943477141ca452 Mon Sep 17 00:00:00 2001 From: John Youn Date: Mon, 17 Sep 2001 00:00:00 -0700 Subject: USB 3.0 Hub Changes Update the USB core to deal with USB 3.0 hubs. These hubs have a slightly different hub descriptor than USB 2.0 hubs, with a fixed (rather than variable length) size. Change the USB core's hub descriptor to have a union for the last fields that differ. Change the host controller drivers that access those last fields (DeviceRemovable and PortPowerCtrlMask) to use the union. Translate the new version of the hub port status field into the old version that khubd understands. (Note: we need to fix it to translate the roothub's port status once we stop converting it to USB 2.0 hub status internally.) Add new code to handle link state change status. Send out new control messages that are needed for USB 3.0 hubs, like Set Hub Depth. This patch is a modified version of the original patch submitted by John Youn. It's updated to reflect the removal of the "bitmap" #define, and change the hub descriptor accesses of a couple new host controller drivers. Signed-off-by: John Youn Signed-off-by: Sarah Sharp Cc: Nobuhiro Iwamatsu Cc: Inaky Perez-Gonzalez Cc: Tony Olech Cc: "Robert P. J. Day" Cc: Max Vozeler Cc: Tejun Heo Cc: Yoshihiro Shimoda Cc: Rodolfo Giometti Cc: Mike Frysinger Cc: Anton Vorontsov Cc: Sebastian Siewior Cc: Lothar Wassmann Cc: Olav Kongas Cc: Martin Fuzzey Cc: Alan Stern Cc: David Brownell --- include/linux/usb/ch11.h | 41 +++++++++++++++++++++++++++++++++++++---- 1 file changed, 37 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/usb/ch11.h b/include/linux/usb/ch11.h index 38c42b013641..22afcd37bc3f 100644 --- a/include/linux/usb/ch11.h +++ b/include/linux/usb/ch11.h @@ -26,6 +26,7 @@ #define HUB_RESET_TT 9 #define HUB_GET_TT_STATE 10 #define HUB_STOP_TT 11 +#define HUB_SET_DEPTH 12 /* * Hub class additional requests defined by USB 3.0 spec @@ -61,6 +62,12 @@ #define USB_PORT_FEAT_TEST 21 #define USB_PORT_FEAT_INDICATOR 22 #define USB_PORT_FEAT_C_PORT_L1 23 +#define USB_PORT_FEAT_C_PORT_LINK_STATE 25 +#define USB_PORT_FEAT_C_PORT_CONFIG_ERROR 26 +#define USB_PORT_FEAT_PORT_REMOTE_WAKE_MASK 27 +#define USB_PORT_FEAT_BH_PORT_RESET 28 +#define USB_PORT_FEAT_C_BH_PORT_RESET 29 +#define USB_PORT_FEAT_FORCE_LINKPM_ACCEPT 30 /* * Port feature selectors added by USB 3.0 spec. @@ -110,8 +117,14 @@ struct usb_port_status { */ #define USB_PORT_STAT_LINK_STATE 0x01e0 #define USB_SS_PORT_STAT_POWER 0x0200 +#define USB_SS_PORT_STAT_SPEED 0x1c00 #define USB_PORT_STAT_SPEED_5GBPS 0x0000 /* Valid only if port is enabled */ +/* Bits that are the same from USB 2.0 */ +#define USB_SS_PORT_STAT_MASK (USB_PORT_STAT_CONNECTION | \ + USB_PORT_STAT_ENABLE | \ + USB_PORT_STAT_OVERCURRENT | \ + USB_PORT_STAT_RESET) /* * Definitions for PORT_LINK_STATE values @@ -141,6 +154,13 @@ struct usb_port_status { #define USB_PORT_STAT_C_OVERCURRENT 0x0008 #define USB_PORT_STAT_C_RESET 0x0010 #define USB_PORT_STAT_C_L1 0x0020 +/* + * USB 3.0 wPortChange bit fields + * See USB 3.0 spec Table 10-11 + */ +#define USB_PORT_STAT_C_BH_RESET 0x0020 +#define USB_PORT_STAT_C_LINK_STATE 0x0040 +#define USB_PORT_STAT_C_CONFIG_ERROR 0x0080 /* * wHubCharacteristics (masks) @@ -175,7 +195,9 @@ struct usb_hub_status { */ #define USB_DT_HUB (USB_TYPE_CLASS | 0x09) +#define USB_DT_SS_HUB (USB_TYPE_CLASS | 0x0a) #define USB_DT_HUB_NONVAR_SIZE 7 +#define USB_DT_SS_HUB_SIZE 12 struct usb_hub_descriptor { __u8 bDescLength; @@ -184,11 +206,22 @@ struct usb_hub_descriptor { __le16 wHubCharacteristics; __u8 bPwrOn2PwrGood; __u8 bHubContrCurrent; - /* add 1 bit for hub status change; round to bytes */ - __u8 DeviceRemovable[(USB_MAXCHILDREN + 1 + 7) / 8]; - __u8 PortPwrCtrlMask[(USB_MAXCHILDREN + 1 + 7) / 8]; -} __attribute__ ((packed)); + /* 2.0 and 3.0 hubs differ here */ + union { + struct { + /* add 1 bit for hub status change; round to bytes */ + __u8 DeviceRemovable[(USB_MAXCHILDREN + 1 + 7) / 8]; + __u8 PortPwrCtrlMask[(USB_MAXCHILDREN + 1 + 7) / 8]; + } __attribute__ ((packed)) hs; + + struct { + __u8 bHubHdrDecLat; + __u16 wHubDelay; + __u16 DeviceRemovable; + } __attribute__ ((packed)) ss; + } u; +} __attribute__ ((packed)); /* port indicator status selectors, tables 11-7 and 11-25 */ #define HUB_LED_AUTO 0 -- cgit v1.2.3 From d673bfcbfffdeb56064a6b1ee047b85590bed76c Mon Sep 17 00:00:00 2001 From: Sarah Sharp Date: Fri, 15 Oct 2010 08:55:24 -0700 Subject: usb: Change usb_hcd->bandwidth_mutex to a pointer. Change the bandwith_mutex in struct usb_hcd to a pointer. This will allow the pointer to be shared across usb_hcds for the upcoming work to split the xHCI driver roothub into a USB 2.0/1.1 and a USB 3.0 bus. Signed-off-by: Sarah Sharp --- include/linux/usb/hcd.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h index 0be61970074e..836aaa91ee15 100644 --- a/include/linux/usb/hcd.h +++ b/include/linux/usb/hcd.h @@ -142,7 +142,7 @@ struct usb_hcd { * bandwidth_mutex should be dropped after a successful control message * to the device, or resetting the bandwidth after a failed attempt. */ - struct mutex bandwidth_mutex; + struct mutex *bandwidth_mutex; #define HCD_BUFFER_POOLS 4 -- cgit v1.2.3 From 83de4b2b90887b5b317d8313864fe4cc5db35280 Mon Sep 17 00:00:00 2001 From: Sarah Sharp Date: Thu, 2 Dec 2010 14:45:18 -0800 Subject: usb: Store bus type in usb_hcd, not in driver flags. The xHCI driver essentially has both a USB 2.0 and a USB 3.0 roothub. So setting the HCD_USB3 bits in the hcd->driver->flags is a bit misleading. Add a new field to usb_hcd, bcdUSB. Store the result of hcd->driver->flags & HCD_MASK in it. Later, when we have the xHCI driver register the two roothubs, we'll set the usb_hcd->bcdUSB field to HCD_USB2 for the USB 2.0 roothub, and HCD_USB3 for the USB 3.0 roothub. Signed-off-by: Sarah Sharp --- include/linux/usb/hcd.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h index 836aaa91ee15..b8bb6934f30b 100644 --- a/include/linux/usb/hcd.h +++ b/include/linux/usb/hcd.h @@ -76,6 +76,10 @@ struct usb_hcd { struct kref kref; /* reference counter */ const char *product_desc; /* product/vendor string */ + int speed; /* Speed for this roothub. + * May be different from + * hcd->driver->flags & HCD_MASK + */ char irq_descr[24]; /* driver + bus # */ struct timer_list rh_timer; /* drives root-hub polling */ -- cgit v1.2.3 From c56354378426e550aaf6ddf3983f502a8fddeab5 Mon Sep 17 00:00:00 2001 From: Sarah Sharp Date: Thu, 28 Oct 2010 15:40:26 -0700 Subject: usb: Make core allocate resources per PCI-device. Introduce the notion of a PCI device that may be associated with more than one USB host controller driver (struct usb_hcd). This patch is the start of the work to separate the xHCI host controller into two roothubs: a USB 3.0 roothub with SuperSpeed-only ports, and a USB 2.0 roothub with HS/FS/LS ports. One usb_hcd structure is designated to be the "primary HCD", and a pointer is added to the usb_hcd structure to keep track of that. A new function call, usb_hcd_is_primary_hcd() is added to check whether the USB hcd is marked as the primary HCD (or if it is not part of a roothub pair). To allow the USB core and xHCI driver to access either roothub in a pair, a "shared_hcd" pointer is added to the usb_hcd structure. Add a new function, usb_create_shared_hcd(), that does roothub allocation for paired roothubs. It will act just like usb_create_hcd() did if the primary_hcd pointer argument is NULL. If it is passed a non-NULL primary_hcd pointer, it sets usb_hcd->shared_hcd and usb_hcd->primary_hcd fields. It will also skip the bandwidth_mutex allocation, and set the secondary hcd's bandwidth_mutex pointer to the primary HCD's mutex. IRQs are only allocated once for the primary roothub. Introduce a new usb_hcd driver flag that indicates the host controller driver wants to create two roothubs. If the HCD_SHARED flag is set, then the USB core PCI probe methods will allocate a second roothub, and make sure that second roothub gets freed during rmmod and in initialization error paths. When usb_hc_died() is called with the primary HCD, make sure that any roothubs that share that host controller are also marked as being dead. Signed-off-by: Sarah Sharp --- include/linux/usb/hcd.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h index b8bb6934f30b..0097136ba45d 100644 --- a/include/linux/usb/hcd.h +++ b/include/linux/usb/hcd.h @@ -147,6 +147,8 @@ struct usb_hcd { * to the device, or resetting the bandwidth after a failed attempt. */ struct mutex *bandwidth_mutex; + struct usb_hcd *shared_hcd; + struct usb_hcd *primary_hcd; #define HCD_BUFFER_POOLS 4 @@ -209,6 +211,7 @@ struct hc_driver { int flags; #define HCD_MEMORY 0x0001 /* HC regs use memory (else I/O) */ #define HCD_LOCAL_MEM 0x0002 /* HC needs local memory */ +#define HCD_SHARED 0x0004 /* Two (or more) usb_hcds share HW */ #define HCD_USB11 0x0010 /* USB 1.1 */ #define HCD_USB2 0x0020 /* USB 2.0 */ #define HCD_USB3 0x0040 /* USB 3.0 */ @@ -370,8 +373,12 @@ extern int usb_hcd_get_frame_number(struct usb_device *udev); extern struct usb_hcd *usb_create_hcd(const struct hc_driver *driver, struct device *dev, const char *bus_name); +extern struct usb_hcd *usb_create_shared_hcd(const struct hc_driver *driver, + struct device *dev, const char *bus_name, + struct usb_hcd *shared_hcd); extern struct usb_hcd *usb_get_hcd(struct usb_hcd *hcd); extern void usb_put_hcd(struct usb_hcd *hcd); +extern int usb_hcd_is_primary_hcd(struct usb_hcd *hcd); extern int usb_add_hcd(struct usb_hcd *hcd, unsigned int irqnum, unsigned long irqflags); extern void usb_remove_hcd(struct usb_hcd *hcd); -- cgit v1.2.3 From 131dec344d5e41f01e4791aa4c80eb4bdb1e5274 Mon Sep 17 00:00:00 2001 From: Sarah Sharp Date: Mon, 6 Dec 2010 21:00:19 -0800 Subject: USB: Remove bogus USB_PORT_STAT_SUPER_SPEED symbol. USB_PORT_STAT_SUPER_SPEED is a made up symbol that the USB core used to track whether USB ports had a SuperSpeed device attached. This is a linux-internal symbol that was used when SuperSpeed and non-SuperSpeed devices would show up under the same xHCI roothub. This particular port status is never returned by external USB 3.0 hubs. (Instead they have a USB_PORT_STAT_SPEED_5GBPS that uses a completely different speed mask.) Now that the xHCI driver registers two roothubs, USB 3.0 devices will only show up under USB 3.0 hubs. Rip out USB_PORT_STAT_SUPER_SPEED and replace it with calls to hub_is_superspeed(). Signed-off-by: Sarah Sharp --- include/linux/usb/ch11.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/usb/ch11.h b/include/linux/usb/ch11.h index 22afcd37bc3f..4ebaf0824179 100644 --- a/include/linux/usb/ch11.h +++ b/include/linux/usb/ch11.h @@ -109,7 +109,6 @@ struct usb_port_status { #define USB_PORT_STAT_TEST 0x0800 #define USB_PORT_STAT_INDICATOR 0x1000 /* bits 13 to 15 are reserved */ -#define USB_PORT_STAT_SUPER_SPEED 0x8000 /* Linux-internal */ /* * Additions to wPortStatus bit field from USB 3.0 -- cgit v1.2.3 From 500132a0f26ad7d9916102193cbc6c1b1becb373 Mon Sep 17 00:00:00 2001 From: Paul Zimmerman Date: Mon, 28 Feb 2011 18:11:27 -0800 Subject: USB: Add support for SuperSpeed isoc endpoints Use the Mult and bMaxBurst values from the endpoint companion descriptor to calculate the max length of an isoc transfer. Add USB_SS_MULT macro to access Mult field of bmAttributes, at Sarah's suggestion. This patch should be queued for the 2.6.36 and 2.6.37 stable trees, since those were the first kernels to have isochronous support for SuperSpeed devices. Signed-off-by: Paul Zimmerman Signed-off-by: Sarah Sharp Cc: stable@kernel.org --- include/linux/usb/ch9.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb/ch9.h b/include/linux/usb/ch9.h index 34316ba05f29..b72f305ce6bd 100644 --- a/include/linux/usb/ch9.h +++ b/include/linux/usb/ch9.h @@ -585,6 +585,8 @@ struct usb_ss_ep_comp_descriptor { #define USB_DT_SS_EP_COMP_SIZE 6 /* Bits 4:0 of bmAttributes if this is a bulk endpoint */ #define USB_SS_MAX_STREAMS(p) (1 << ((p) & 0x1f)) +/* Bits 1:0 of bmAttributes if this is an isoc endpoint */ +#define USB_SS_MULT(p) (1 + ((p) & 0x3)) /*-------------------------------------------------------------------------*/ -- cgit v1.2.3 From 9736acf395d3608583a7be70f62800b494fa103c Mon Sep 17 00:00:00 2001 From: Steffen Klassert Date: Tue, 8 Mar 2011 00:05:43 +0000 Subject: xfrm: Add basic infrastructure to support IPsec extended sequence numbers This patch adds the struct xfrm_replay_state_esn which will be used to support IPsec extended sequence numbers and anti replay windows bigger than 32 packets. Also we add a function that returns the actual size of the xfrm_replay_state_esn, a xfrm netlink atribute and a xfrm state flag for the use of extended sequence numbers. Signed-off-by: Steffen Klassert Acked-by: Herbert Xu Signed-off-by: David S. Miller --- include/linux/xfrm.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'include/linux') diff --git a/include/linux/xfrm.h b/include/linux/xfrm.h index b93d6f598085..22e61fdf75a2 100644 --- a/include/linux/xfrm.h +++ b/include/linux/xfrm.h @@ -84,6 +84,16 @@ struct xfrm_replay_state { __u32 bitmap; }; +struct xfrm_replay_state_esn { + unsigned int bmp_len; + __u32 oseq; + __u32 seq; + __u32 oseq_hi; + __u32 seq_hi; + __u32 replay_window; + __u32 bmp[0]; +}; + struct xfrm_algo { char alg_name[64]; unsigned int alg_key_len; /* in bits */ @@ -284,6 +294,7 @@ enum xfrm_attr_type_t { XFRMA_ALG_AUTH_TRUNC, /* struct xfrm_algo_auth */ XFRMA_MARK, /* struct xfrm_mark */ XFRMA_TFCPAD, /* __u32 */ + XFRMA_REPLAY_ESN_VAL, /* struct xfrm_replay_esn */ __XFRMA_MAX #define XFRMA_MAX (__XFRMA_MAX - 1) @@ -351,6 +362,7 @@ struct xfrm_usersa_info { #define XFRM_STATE_ICMP 16 #define XFRM_STATE_AF_UNSPEC 32 #define XFRM_STATE_ALIGN4 64 +#define XFRM_STATE_ESN 128 }; struct xfrm_usersa_id { -- cgit v1.2.3 From 64b97594251bb909d74d64012a2b9e5cc32bb11d Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Tue, 22 Feb 2011 14:32:38 +0530 Subject: libata-sff: add ata_sff_queue_work() & ata_sff_queue_delayed_work() This patch adds ata_sff_queue_work() & ata_sff_queue_delayed_work() routine in libata-sff.c file. This routine can be used by ata drivers to use ata_sff_wq. Signed-off-by: Viresh Kumar Acked-by: Tejun Heo Signed-off-by: Jeff Garzik --- include/linux/libata.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/libata.h b/include/linux/libata.h index 71333aa39532..c71f46960f39 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -1610,6 +1610,9 @@ extern void ata_sff_irq_on(struct ata_port *ap); extern void ata_sff_irq_clear(struct ata_port *ap); extern int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc, u8 status, int in_wq); +extern void ata_sff_queue_work(struct work_struct *work); +extern void ata_sff_queue_delayed_work(struct delayed_work *dwork, + unsigned long delay); extern void ata_sff_queue_pio_task(struct ata_link *link, unsigned long delay); extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc); extern bool ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc); -- cgit v1.2.3 From a480167b23ef9b35ec0299bb3e1b11b4ed6b3508 Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Tue, 22 Feb 2011 15:46:07 +0530 Subject: pata_arasan_cf: Adding support for arasan compact flash host controller The Arasan CompactFlash Device Controller has three basic modes of operation: PC card ATA using I/O mode, PC card ATA using memory mode, PC card ATA using true IDE modes. Currently driver supports only True IDE mode. Signed-off-by: Viresh Kumar Signed-off-by: Jeff Garzik --- include/linux/pata_arasan_cf_data.h | 47 +++++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 include/linux/pata_arasan_cf_data.h (limited to 'include/linux') diff --git a/include/linux/pata_arasan_cf_data.h b/include/linux/pata_arasan_cf_data.h new file mode 100644 index 000000000000..d979fe688796 --- /dev/null +++ b/include/linux/pata_arasan_cf_data.h @@ -0,0 +1,47 @@ +/* + * include/linux/pata_arasan_cf_data.h + * + * Arasan Compact Flash host controller platform data header file + * + * Copyright (C) 2011 ST Microelectronics + * Viresh Kumar + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + */ + +#ifndef _PATA_ARASAN_CF_DATA_H +#define _PATA_ARASAN_CF_DATA_H + +#include + +struct arasan_cf_pdata { + u8 cf_if_clk; + #define CF_IF_CLK_100M (0x0) + #define CF_IF_CLK_75M (0x1) + #define CF_IF_CLK_66M (0x2) + #define CF_IF_CLK_50M (0x3) + #define CF_IF_CLK_40M (0x4) + #define CF_IF_CLK_33M (0x5) + #define CF_IF_CLK_25M (0x6) + #define CF_IF_CLK_125M (0x7) + #define CF_IF_CLK_150M (0x8) + #define CF_IF_CLK_166M (0x9) + #define CF_IF_CLK_200M (0xA) + /* + * Platform specific incapabilities of CF controller is handled via + * quirks + */ + u32 quirk; + #define CF_BROKEN_PIO (1) + #define CF_BROKEN_MWDMA (1 << 1) + #define CF_BROKEN_UDMA (1 << 2) +}; + +static inline void +set_arasan_cf_pdata(struct platform_device *pdev, struct arasan_cf_pdata *data) +{ + pdev->dev.platform_data = data; +} +#endif /* _PATA_ARASAN_CF_DATA_H */ -- cgit v1.2.3 From 60a230e4a62be6837335911b09101bd8aeb7c95a Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Fri, 4 Mar 2011 16:39:29 +0530 Subject: ata/pata_arasan_cf: fill dma chan->private from pdata->dma_priv Some DMA controllers (eg: drivers/dma/dw_dmac*) allow platform specific configuration for dma transfers. User drivers need to set chan->private field of channel with pointer to configuration data. This patch takes dma_priv data from platform data and passes it to chan->private_data, in order to pass platform specific configuration to DMAC controller. Signed-off-by: Viresh Kumar Signed-off-by: Jeff Garzik --- include/linux/pata_arasan_cf_data.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pata_arasan_cf_data.h b/include/linux/pata_arasan_cf_data.h index d979fe688796..a6ee9aa898bb 100644 --- a/include/linux/pata_arasan_cf_data.h +++ b/include/linux/pata_arasan_cf_data.h @@ -37,6 +37,8 @@ struct arasan_cf_pdata { #define CF_BROKEN_PIO (1) #define CF_BROKEN_MWDMA (1 << 1) #define CF_BROKEN_UDMA (1 << 2) + /* This is platform specific data for the DMA controller */ + void *dma_priv; }; static inline void -- cgit v1.2.3 From 6b3b9d73e08d8939aaf54f85bb47495171f49e20 Mon Sep 17 00:00:00 2001 From: Hannes Reinecke Date: Mon, 7 Mar 2011 08:56:44 +0100 Subject: libata: Include WWN ID in inquiry VPD emulation As per SAT-3 the WWN ID should be included in the VPD page 0x83 (device identification) emulation. Signed-off-by: Hannes Reinecke Acked-by: Tejun Heo Signed-off-by: Jeff Garzik --- include/linux/ata.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ata.h b/include/linux/ata.h index 0c4929fa34d3..198e1ea2b2eb 100644 --- a/include/linux/ata.h +++ b/include/linux/ata.h @@ -89,6 +89,7 @@ enum { ATA_ID_SPG = 98, ATA_ID_LBA_CAPACITY_2 = 100, ATA_ID_SECTOR_SIZE = 106, + ATA_ID_WWN = 108, ATA_ID_LOGICAL_SECTOR_SIZE = 117, /* and 118 */ ATA_ID_LAST_LUN = 126, ATA_ID_DLF = 128, @@ -103,6 +104,7 @@ enum { ATA_ID_SERNO_LEN = 20, ATA_ID_FW_REV_LEN = 8, ATA_ID_PROD_LEN = 40, + ATA_ID_WWN_LEN = 8, ATA_PCI_CTL_OFS = 2, @@ -815,6 +817,11 @@ static inline int ata_id_has_unload(const u16 *id) return 0; } +static inline bool ata_id_has_wwn(const u16 *id) +{ + return (id[ATA_ID_CSF_DEFAULT] & 0xC100) == 0x4100; +} + static inline int ata_id_form_factor(const u16 *id) { u16 val = id[168]; -- cgit v1.2.3 From c9c6cac0c2bdbda42e7b804838648d0bc60ddb13 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Wed, 16 Feb 2011 15:15:47 -0500 Subject: kill path_lookup() all remaining callers pass LOOKUP_PARENT to it, so flags argument can die; renamed to kern_path_parent() Signed-off-by: Al Viro --- include/linux/namei.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/namei.h b/include/linux/namei.h index f276d4fa01fc..58ce3433d4ec 100644 --- a/include/linux/namei.h +++ b/include/linux/namei.h @@ -72,7 +72,7 @@ extern int user_path_at(int, const char __user *, unsigned, struct path *); extern int kern_path(const char *, unsigned, struct path *); -extern int path_lookup(const char *, unsigned, struct nameidata *); +extern int kern_path_parent(const char *, struct nameidata *); extern int vfs_path_lookup(struct dentry *, struct vfsmount *, const char *, unsigned int, struct nameidata *); -- cgit v1.2.3 From 16c2cd7179881d5dd87779512ca5a0d657c64f62 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Tue, 22 Feb 2011 15:50:10 -0500 Subject: untangle the "need_reval_dot" mess instead of ad-hackery around need_reval_dot(), do the following: set a flag (LOOKUP_JUMPED) in the beginning of path, on absolute symlink traversal, on ".." and on procfs-style symlinks. Clear on normal components, leave unchanged on ".". Non-nested callers of link_path_walk() call handle_reval_path(), which checks that flag is set and that fs does want the final revalidate thing, then does ->d_revalidate(). In link_path_walk() all the return_reval stuff is gone. Signed-off-by: Al Viro --- include/linux/namei.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/namei.h b/include/linux/namei.h index 58ce3433d4ec..265378a707bd 100644 --- a/include/linux/namei.h +++ b/include/linux/namei.h @@ -63,6 +63,8 @@ enum {LAST_NORM, LAST_ROOT, LAST_DOT, LAST_DOTDOT, LAST_BIND}; #define LOOKUP_EXCL 0x0400 #define LOOKUP_RENAME_TARGET 0x0800 +#define LOOKUP_JUMPED 0x1000 + extern int user_path_at(int, const char __user *, unsigned, struct path *); #define user_path(name, path) user_path_at(AT_FDCWD, name, LOOKUP_FOLLOW, path) -- cgit v1.2.3 From 47c805dc2d2dff686962f5f0baa6bac2d703ba19 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Wed, 23 Feb 2011 17:44:09 -0500 Subject: switch do_filp_open() to struct open_flags take calculation of open_flags by open(2) arguments into new helper in fs/open.c, move filp_open() over there, have it and do_sys_open() use that helper, switch exec.c callers of do_filp_open() to explicit (and constant) struct open_flags. Signed-off-by: Al Viro --- include/linux/fs.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index e38b50a4b9d2..9c75714f92c1 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2205,8 +2205,6 @@ extern struct file *create_read_pipe(struct file *f, int flags); extern struct file *create_write_pipe(int flags); extern void free_write_pipe(struct file *); -extern struct file *do_filp_open(int dfd, const char *pathname, - int open_flag, int mode, int acc_mode); extern int may_open(struct path *, int, int); extern int kernel_read(struct file *, loff_t, char *, unsigned long); -- cgit v1.2.3 From 70e9b3571107b88674cd55ae4bed33f76261e7d3 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sat, 5 Mar 2011 21:12:22 -0500 Subject: get rid of nd->file Don't stash the struct file * used as starting point of walk in nameidata; pass file ** to path_init() instead. Signed-off-by: Al Viro --- include/linux/namei.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/namei.h b/include/linux/namei.h index 265378a707bd..72ffd62ac736 100644 --- a/include/linux/namei.h +++ b/include/linux/namei.h @@ -19,7 +19,6 @@ struct nameidata { struct path path; struct qstr last; struct path root; - struct file *file; struct inode *inode; /* path.dentry.d_inode */ unsigned int flags; unsigned seq; -- cgit v1.2.3 From 5b6ca027d85b7438c84b78a54ccdc2e53f2909cd Mon Sep 17 00:00:00 2001 From: Al Viro Date: Wed, 9 Mar 2011 23:04:47 -0500 Subject: reduce vfs_path_lookup() to do_path_lookup() New lookup flag: LOOKUP_ROOT. nd->root is set (and held) by caller, path_init() starts walking from that place and all pathname resolution machinery never drops nd->root if that flag is set. That turns vfs_path_lookup() into a special case of do_path_lookup() *and* gets us down to 3 callers of link_path_walk(), making it finally feasible to rip the handling of trailing symlink out of link_path_walk(). That will not only simply the living hell out of it, but make life much simpler for unionfs merge. Trailing symlink handling will become iterative, which is a good thing for stack footprint in a lot of situations as well. Signed-off-by: Al Viro --- include/linux/namei.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/namei.h b/include/linux/namei.h index 72ffd62ac736..83cd6e5cd7dc 100644 --- a/include/linux/namei.h +++ b/include/linux/namei.h @@ -63,6 +63,7 @@ enum {LAST_NORM, LAST_ROOT, LAST_DOT, LAST_DOTDOT, LAST_BIND}; #define LOOKUP_RENAME_TARGET 0x0800 #define LOOKUP_JUMPED 0x1000 +#define LOOKUP_ROOT 0x2000 extern int user_path_at(int, const char __user *, unsigned, struct path *); -- cgit v1.2.3 From 73d049a40fc6269189c4e2ba6792cb5dd054883c Mon Sep 17 00:00:00 2001 From: Al Viro Date: Fri, 11 Mar 2011 12:08:24 -0500 Subject: open-style analog of vfs_path_lookup() new function: file_open_root(dentry, mnt, name, flags) opens the file vfs_path_lookup would arrive to. Note that name can be empty; in that case the usual requirement that dentry should be a directory is lifted. open-coded equivalents switched to it, may_open() got down exactly one caller and became static. Signed-off-by: Al Viro --- include/linux/fs.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index 9c75714f92c1..bf5c3c896072 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1990,6 +1990,8 @@ extern int do_fallocate(struct file *file, int mode, loff_t offset, extern long do_sys_open(int dfd, const char __user *filename, int flags, int mode); extern struct file *filp_open(const char *, int, int); +extern struct file *file_open_root(struct dentry *, struct vfsmount *, + const char *, int); extern struct file * dentry_open(struct dentry *, struct vfsmount *, int, const struct cred *); extern int filp_close(struct file *, fl_owner_t id); @@ -2205,8 +2207,6 @@ extern struct file *create_read_pipe(struct file *f, int flags); extern struct file *create_write_pipe(int flags); extern void free_write_pipe(struct file *); -extern int may_open(struct path *, int, int); - extern int kernel_read(struct file *, loff_t, char *, unsigned long); extern struct file * open_exec(const char *); -- cgit v1.2.3 From c8b91accfa1059d5565443193d89572eca2f5dd6 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sat, 12 Mar 2011 10:41:39 -0500 Subject: clean statfs-like syscalls up New helpers: user_statfs() and fd_statfs(), taking userland pathname and descriptor resp. and filling struct kstatfs. Syscalls of statfs family (native, compat and foreign - osf and hpux on alpha and parisc resp.) switched to those. Removes some boilerplate code, simplifies cleanup on errors... Signed-off-by: Al Viro --- include/linux/fs.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index bf5c3c896072..b7178b05cf3a 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1874,6 +1874,8 @@ extern void drop_collected_mounts(struct vfsmount *); extern int iterate_mounts(int (*)(struct vfsmount *, void *), void *, struct vfsmount *); extern int vfs_statfs(struct path *, struct kstatfs *); +extern int user_statfs(const char __user *, struct kstatfs *); +extern int fd_statfs(int, struct kstatfs *); extern int statfs_by_dentry(struct dentry *, struct kstatfs *); extern int freeze_super(struct super_block *super); extern int thaw_super(struct super_block *super); -- cgit v1.2.3 From 5fe0c2378884e68beb532f5890cc0e3539ac747b Mon Sep 17 00:00:00 2001 From: "Aneesh Kumar K.V" Date: Sat, 29 Jan 2011 18:43:25 +0530 Subject: exportfs: Return the minimum required handle size The exportfs encode handle function should return the minimum required handle size. This helps user to find out the handle size by passing 0 handle size in the first step and then redoing to the call again with the returned handle size value. Acked-by: Serge Hallyn Signed-off-by: Aneesh Kumar K.V Signed-off-by: Al Viro --- include/linux/exportfs.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/exportfs.h b/include/linux/exportfs.h index 28028988c862..65afdfd31b7b 100644 --- a/include/linux/exportfs.h +++ b/include/linux/exportfs.h @@ -121,8 +121,10 @@ struct fid { * set, the encode_fh() should store sufficient information so that a good * attempt can be made to find not only the file but also it's place in the * filesystem. This typically means storing a reference to de->d_parent in - * the filehandle fragment. encode_fh() should return the number of bytes - * stored or a negative error code such as %-ENOSPC + * the filehandle fragment. encode_fh() should return the fileid_type on + * success and on error returns 255 (if the space needed to encode fh is + * greater than @max_len*4 bytes). On error @max_len contains the minimum + * size(in 4 byte unit) needed to encode the file handle. * * fh_to_dentry: * @fh_to_dentry is given a &struct super_block (@sb) and a file handle -- cgit v1.2.3 From 4fc756bd9dbf6b84fbf751e3bf495277849c5db7 Mon Sep 17 00:00:00 2001 From: Mike Waychison Date: Fri, 11 Mar 2011 17:43:27 -0800 Subject: efivars: Expose efivars functionality to external drivers. Signed-off-by: Mike Waychison Cc: Matt Domsch , Signed-off-by: Greg Kroah-Hartman --- include/linux/efi.h | 37 +++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) (limited to 'include/linux') diff --git a/include/linux/efi.h b/include/linux/efi.h index fb737bc19a8c..33fa1203024e 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -397,4 +397,41 @@ static inline void memrange_efi_to_native(u64 *addr, u64 *npages) *addr &= PAGE_MASK; } +#if defined(CONFIG_EFI_VARS) || defined(CONFIG_EFI_VARS_MODULE) +/* + * EFI Variable support. + * + * Different firmware drivers can expose their EFI-like variables using + * the following. + */ + +struct efivar_operations { + efi_get_variable_t *get_variable; + efi_get_next_variable_t *get_next_variable; + efi_set_variable_t *set_variable; +}; + +struct efivars { + /* + * ->lock protects two things: + * 1) ->list - adds, removals, reads, writes + * 2) ops.[gs]et_variable() calls. + * It must not be held when creating sysfs entries or calling kmalloc. + * ops.get_next_variable() is only called from register_efivars(), + * which is protected by the BKL, so that path is safe. + */ + spinlock_t lock; + struct list_head list; + struct kset *kset; + struct bin_attribute *new_var, *del_var; + const struct efivar_operations *ops; +}; + +int register_efivars(struct efivars *efivars, + const struct efivar_operations *ops, + struct kobject *parent_kobj); +void unregister_efivars(struct efivars *efivars); + +#endif /* CONFIG_EFI_VARS */ + #endif /* _LINUX_EFI_H */ -- cgit v1.2.3 From e0dca7a05df4e23a8f5b07742e99e2a6f7d67db1 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Mon, 14 Mar 2011 18:20:01 -0400 Subject: NFS: Fix a warning in fs/nfs/idmap.c MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Commit 45a52a02072b2a7e265f024cfdb00127e08dd9f2 (NFS move nfs_client initialization into nfs_get_client) introduces a new warning in fs/nfs/idmap.c: ‘struct rpc_timeout’ declared inside parameter list Fix it by adding a forward declaration for the struct rpc_timeout in include/linux/nfs_xdr.h Signed-off-by: Trond Myklebust --- include/linux/nfs_xdr.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 3440f5ab0f54..2c2c67d2eb42 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -1051,6 +1051,7 @@ struct nfs_write_data { struct nfs_access_entry; struct nfs_client; +struct rpc_timeout; /* * RPC procedure vector for NFSv2/NFSv3 demuxing -- cgit v1.2.3 From f52e0c11305aa09ed56cad97ffc8f0cdc3d78b5d Mon Sep 17 00:00:00 2001 From: Al Viro Date: Mon, 14 Mar 2011 18:56:51 -0400 Subject: New AT_... flag: AT_EMPTY_PATH For name_to_handle_at(2) we'll want both ...at()-style syscall that would be usable for non-directory descriptors (with empty relative pathname). Introduce new flag (AT_EMPTY_PATH) to deal with that and corresponding LOOKUP_EMPTY; teach user_path_at() and path_init() to deal with the latter. Signed-off-by: Al Viro --- include/linux/fcntl.h | 1 + include/linux/namei.h | 1 + 2 files changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/fcntl.h b/include/linux/fcntl.h index a562fa5fb4e3..f550f894ba15 100644 --- a/include/linux/fcntl.h +++ b/include/linux/fcntl.h @@ -46,6 +46,7 @@ unlinking file. */ #define AT_SYMLINK_FOLLOW 0x400 /* Follow symbolic links. */ #define AT_NO_AUTOMOUNT 0x800 /* Suppress terminal automount traversal */ +#define AT_EMPTY_PATH 0x1000 /* Allow empty relative pathname */ #ifdef __KERNEL__ diff --git a/include/linux/namei.h b/include/linux/namei.h index 83cd6e5cd7dc..9c8603872c36 100644 --- a/include/linux/namei.h +++ b/include/linux/namei.h @@ -64,6 +64,7 @@ enum {LAST_NORM, LAST_ROOT, LAST_DOT, LAST_DOTDOT, LAST_BIND}; #define LOOKUP_JUMPED 0x1000 #define LOOKUP_ROOT 0x2000 +#define LOOKUP_EMPTY 0x4000 extern int user_path_at(int, const char __user *, unsigned, struct path *); -- cgit v1.2.3 From cb8f51bdadb7969139c2e39c2defd4cde98c1ea8 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 8 Feb 2011 23:26:02 +0100 Subject: PM: Do not create wakeup sysfs files for devices that cannot wake up Currently, wakeup sysfs attributes are created for all devices, regardless of whether or not they are wakeup-capable. This is excessive and complicates wakeup device identification from user space (i.e. to identify wakeup-capable devices user space has to read /sys/devices/.../power/wakeup for all devices and see if they are not empty). Fix this issue by avoiding to create wakeup sysfs files for devices that cannot wake up the system from sleep states (i.e. whose power.can_wakeup flags are unset during registration) and modify device_set_wakeup_capable() so that it adds (or removes) the relevant sysfs attributes if a device's wakeup capability status is changed. Signed-off-by: Rafael J. Wysocki --- include/linux/pm_runtime.h | 6 ++++++ include/linux/pm_wakeup.h | 8 +------- 2 files changed, 7 insertions(+), 7 deletions(-) (limited to 'include/linux') diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h index d34f067e2a7f..8de9aa6e7def 100644 --- a/include/linux/pm_runtime.h +++ b/include/linux/pm_runtime.h @@ -87,6 +87,11 @@ static inline bool pm_runtime_enabled(struct device *dev) return !dev->power.disable_depth; } +static inline bool pm_runtime_callbacks_present(struct device *dev) +{ + return !dev->power.no_callbacks; +} + static inline void pm_runtime_mark_last_busy(struct device *dev) { ACCESS_ONCE(dev->power.last_busy) = jiffies; @@ -133,6 +138,7 @@ static inline int pm_generic_runtime_resume(struct device *dev) { return 0; } static inline void pm_runtime_no_callbacks(struct device *dev) {} static inline void pm_runtime_irq_safe(struct device *dev) {} +static inline bool pm_runtime_callbacks_present(struct device *dev) { return false; } static inline void pm_runtime_mark_last_busy(struct device *dev) {} static inline void __pm_runtime_use_autosuspend(struct device *dev, bool use) {} diff --git a/include/linux/pm_wakeup.h b/include/linux/pm_wakeup.h index 03a67db03d01..a32da962d693 100644 --- a/include/linux/pm_wakeup.h +++ b/include/linux/pm_wakeup.h @@ -62,18 +62,11 @@ struct wakeup_source { * Changes to device_may_wakeup take effect on the next pm state change. */ -static inline void device_set_wakeup_capable(struct device *dev, bool capable) -{ - dev->power.can_wakeup = capable; -} - static inline bool device_can_wakeup(struct device *dev) { return dev->power.can_wakeup; } - - static inline bool device_may_wakeup(struct device *dev) { return dev->power.can_wakeup && !!dev->power.wakeup; @@ -88,6 +81,7 @@ extern struct wakeup_source *wakeup_source_register(const char *name); extern void wakeup_source_unregister(struct wakeup_source *ws); extern int device_wakeup_enable(struct device *dev); extern int device_wakeup_disable(struct device *dev); +extern void device_set_wakeup_capable(struct device *dev, bool capable); extern int device_init_wakeup(struct device *dev, bool val); extern int device_set_wakeup_enable(struct device *dev, bool enable); extern void __pm_stay_awake(struct wakeup_source *ws); -- cgit v1.2.3 From cd51e61cf4e8b220da37dc35e9c2dc2dc258b4de Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Fri, 11 Feb 2011 00:04:52 +0100 Subject: PM / ACPI: Remove references to pm_flags from bus.c If direct references to pm_flags are removed from drivers/acpi/bus.c, CONFIG_ACPI will not need to depend on CONFIG_PM any more. Make that happen. Signed-off-by: Rafael J. Wysocki Acked-by: Len Brown --- include/linux/suspend.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/suspend.h b/include/linux/suspend.h index 5a89e3612875..5e364db8a56a 100644 --- a/include/linux/suspend.h +++ b/include/linux/suspend.h @@ -272,6 +272,9 @@ extern int unregister_pm_notifier(struct notifier_block *nb); register_pm_notifier(&fn##_nb); \ } +extern bool pm_apm_enabled(void); +extern void pm_set_acpi_flag(void); + /* drivers/base/power/wakeup.c */ extern bool events_check_enabled; @@ -292,6 +295,9 @@ static inline int unregister_pm_notifier(struct notifier_block *nb) #define pm_notifier(fn, pri) do { (void)(fn); } while (0) +static inline bool pm_apm_enabled(void) { return false; } +static inline void pm_set_acpi_flag(void) {} + static inline bool pm_wakeup_pending(void) { return false; } #endif /* !CONFIG_PM_SLEEP */ -- cgit v1.2.3 From aa33860158114d0df3c7997bc1dd41c0168e1c2a Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Fri, 11 Feb 2011 00:06:54 +0100 Subject: PM: Remove CONFIG_PM_OPS After redefining CONFIG_PM to depend on (CONFIG_PM_SLEEP || CONFIG_PM_RUNTIME) the CONFIG_PM_OPS option is redundant and can be replaced with CONFIG_PM. Signed-off-by: Rafael J. Wysocki --- include/linux/pm.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/pm.h b/include/linux/pm.h index 21415cc91cbb..9279175a4557 100644 --- a/include/linux/pm.h +++ b/include/linux/pm.h @@ -267,7 +267,7 @@ const struct dev_pm_ops name = { \ * callbacks provided by device drivers supporting both the system sleep PM and * runtime PM, make the pm member point to generic_subsys_pm_ops. */ -#ifdef CONFIG_PM_OPS +#ifdef CONFIG_PM extern struct dev_pm_ops generic_subsys_pm_ops; #define GENERIC_SUBSYS_PM_OPS (&generic_subsys_pm_ops) #else -- cgit v1.2.3 From 6831c6edc7b272a08dd2a6c71bb183a48fe98ae6 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 15 Feb 2011 21:22:24 +0100 Subject: PM: Drop pm_flags that is not necessary The variable pm_flags is used to prevent APM from being enabled along with ACPI, which would lead to problems. However, acpi_init() is always called before apm_init() and after acpi_init() has returned, it is known whether or not ACPI will be used. Namely, if acpi_disabled is not set after acpi_init() has returned, this means that ACPI is enabled. Thus, it is sufficient to check acpi_disabled in apm_init() to prevent APM from being enabled in parallel with ACPI. Signed-off-by: Rafael J. Wysocki Acked-by: Len Brown --- include/linux/pm.h | 9 --------- include/linux/suspend.h | 6 ------ 2 files changed, 15 deletions(-) (limited to 'include/linux') diff --git a/include/linux/pm.h b/include/linux/pm.h index 9279175a4557..1f79c98f1e56 100644 --- a/include/linux/pm.h +++ b/include/linux/pm.h @@ -565,15 +565,6 @@ enum dpm_order { DPM_ORDER_DEV_LAST, }; -/* - * Global Power Management flags - * Used to keep APM and ACPI from both being active - */ -extern unsigned int pm_flags; - -#define PM_APM 1 -#define PM_ACPI 2 - extern int pm_generic_suspend(struct device *dev); extern int pm_generic_resume(struct device *dev); extern int pm_generic_freeze(struct device *dev); diff --git a/include/linux/suspend.h b/include/linux/suspend.h index 5e364db8a56a..5a89e3612875 100644 --- a/include/linux/suspend.h +++ b/include/linux/suspend.h @@ -272,9 +272,6 @@ extern int unregister_pm_notifier(struct notifier_block *nb); register_pm_notifier(&fn##_nb); \ } -extern bool pm_apm_enabled(void); -extern void pm_set_acpi_flag(void); - /* drivers/base/power/wakeup.c */ extern bool events_check_enabled; @@ -295,9 +292,6 @@ static inline int unregister_pm_notifier(struct notifier_block *nb) #define pm_notifier(fn, pri) do { (void)(fn); } while (0) -static inline bool pm_apm_enabled(void) { return false; } -static inline void pm_set_acpi_flag(void) {} - static inline bool pm_wakeup_pending(void) { return false; } #endif /* !CONFIG_PM_SLEEP */ -- cgit v1.2.3 From 7538e3db6e015e890825fbd9f8659952896ddd5b Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Wed, 16 Feb 2011 21:53:17 +0100 Subject: PM: Add support for device power domains The platform bus type is often used to handle Systems-on-a-Chip (SoC) where all devices are represented by objects of type struct platform_device. In those cases the same "platform" device driver may be used with multiple different system configurations, but the actions needed to put the devices it handles into a low-power state and back into the full-power state may depend on the design of the given SoC. The driver, however, cannot possibly include all the information necessary for the power management of its device on all the systems it is used with. Moreover, the device hierarchy in its current form also is not suitable for representing this kind of information. The patch below attempts to address this problem by introducing objects of type struct dev_power_domain that can be used for representing power domains within a SoC. Every struct dev_power_domain object provides a sets of device power management callbacks that can be used to perform what's needed for device power management in addition to the operations carried out by the device's driver and subsystem. Namely, if a struct dev_power_domain object is pointed to by the pwr_domain field in a struct device, the callbacks provided by its ops member will be executed in addition to the corresponding callbacks provided by the device's subsystem and driver during all power transitions. Signed-off-by: Rafael J. Wysocki Tested-and-acked-by: Kevin Hilman --- include/linux/device.h | 1 + include/linux/pm.h | 8 ++++++++ 2 files changed, 9 insertions(+) (limited to 'include/linux') diff --git a/include/linux/device.h b/include/linux/device.h index 1bf5cf0b4513..22e9a8a7e1bc 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -422,6 +422,7 @@ struct device { void *platform_data; /* Platform specific data, device core doesn't touch it */ struct dev_pm_info power; + struct dev_power_domain *pwr_domain; #ifdef CONFIG_NUMA int numa_node; /* NUMA node this device is close to */ diff --git a/include/linux/pm.h b/include/linux/pm.h index 1f79c98f1e56..6618216bb973 100644 --- a/include/linux/pm.h +++ b/include/linux/pm.h @@ -465,6 +465,14 @@ struct dev_pm_info { extern void update_pm_runtime_accounting(struct device *dev); +/* + * Power domains provide callbacks that are executed during system suspend, + * hibernation, system resume and during runtime PM transitions along with + * subsystem-level and driver-level callbacks. + */ +struct dev_power_domain { + struct dev_pm_ops ops; +}; /* * The PM_EVENT_ messages are also used by drivers implementing the legacy -- cgit v1.2.3 From 40dc166cb5dddbd36aa4ad11c03915ea538f5a61 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 15 Mar 2011 00:43:46 +0100 Subject: PM / Core: Introduce struct syscore_ops for core subsystems PM Some subsystems need to carry out suspend/resume and shutdown operations with one CPU on-line and interrupts disabled. The only way to register such operations is to define a sysdev class and a sysdev specifically for this purpose which is cumbersome and inefficient. Moreover, the arguments taken by sysdev suspend, resume and shutdown callbacks are practically never necessary. For this reason, introduce a simpler interface allowing subsystems to register operations to be executed very late during system suspend and shutdown and very early during resume in the form of strcut syscore_ops objects. Signed-off-by: Rafael J. Wysocki Acked-by: Greg Kroah-Hartman --- include/linux/syscore_ops.h | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 include/linux/syscore_ops.h (limited to 'include/linux') diff --git a/include/linux/syscore_ops.h b/include/linux/syscore_ops.h new file mode 100644 index 000000000000..27b3b0bc41a9 --- /dev/null +++ b/include/linux/syscore_ops.h @@ -0,0 +1,29 @@ +/* + * syscore_ops.h - System core operations. + * + * Copyright (C) 2011 Rafael J. Wysocki , Novell Inc. + * + * This file is released under the GPLv2. + */ + +#ifndef _LINUX_SYSCORE_OPS_H +#define _LINUX_SYSCORE_OPS_H + +#include + +struct syscore_ops { + struct list_head node; + int (*suspend)(void); + void (*resume)(void); + void (*shutdown)(void); +}; + +extern void register_syscore_ops(struct syscore_ops *ops); +extern void unregister_syscore_ops(struct syscore_ops *ops); +#ifdef CONFIG_PM_SLEEP +extern int syscore_suspend(void); +extern void syscore_resume(void); +#endif +extern void syscore_shutdown(void); + +#endif -- cgit v1.2.3 From 698e1d23cfc15312be2e7665014afd98c49ae9a1 Mon Sep 17 00:00:00 2001 From: Mark Rustad Date: Mon, 14 Mar 2011 09:01:02 +0000 Subject: net: dcbnl: Update copyright dates Signed-off-by: Mark Rustad Signed-off-by: John Fastabend Signed-off-by: David S. Miller --- include/linux/dcbnl.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/dcbnl.h b/include/linux/dcbnl.h index a3680a16718f..97c90b953c31 100644 --- a/include/linux/dcbnl.h +++ b/include/linux/dcbnl.h @@ -1,5 +1,5 @@ /* - * Copyright (c) 2008, Intel Corporation. + * Copyright (c) 2008-2011, Intel Corporation. * * This program is free software; you can redistribute it and/or modify it * under the terms and conditions of the GNU General Public License, -- cgit v1.2.3 From 171f20e93b9d44a846bd5a41a583fdae13d26cd7 Mon Sep 17 00:00:00 2001 From: Mark Rustad Date: Mon, 14 Mar 2011 09:01:08 +0000 Subject: net: dcbnl: Fix misspellings Fix a few spelling errors in dcbnl.h. Signed-off-by: Mark Rustad Signed-off-by: John Fastabend Signed-off-by: David S. Miller --- include/linux/dcbnl.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/dcbnl.h b/include/linux/dcbnl.h index 97c90b953c31..eedf79b7ef7e 100644 --- a/include/linux/dcbnl.h +++ b/include/linux/dcbnl.h @@ -26,13 +26,13 @@ #define IEEE_8021QAZ_MAX_TCS 8 #define IEEE_8021QAZ_TSA_STRICT 0 -#define IEEE_8021QAZ_TSA_CB_SHABER 1 +#define IEEE_8021QAZ_TSA_CB_SHAPER 1 #define IEEE_8021QAZ_TSA_ETS 2 #define IEEE_8021QAZ_TSA_VENDOR 255 /* This structure contains the IEEE 802.1Qaz ETS managed object * - * @willing: willing bit in ETS configuratin TLV + * @willing: willing bit in ETS configuration TLV * @ets_cap: indicates supported capacity of ets feature * @cbs: credit based shaper ets algorithm supported * @tc_tx_bw: tc tx bandwidth indexed by traffic class @@ -92,7 +92,7 @@ struct ieee_pfc { #define CEE_DCBX_MAX_PRIO 8 /** - * struct cee_pg - CEE Prioity-Group managed object + * struct cee_pg - CEE Priority-Group managed object * * @willing: willing bit in the PG tlv * @error: error bit in the PG tlv -- cgit v1.2.3 From 0c0217b016ba8a970a6f6ab62ad0d858f39881ca Mon Sep 17 00:00:00 2001 From: Mark Rustad Date: Mon, 14 Mar 2011 09:01:15 +0000 Subject: net: dcbnl: Add IEEE app selector value definitions This adds defines for the app selector values currently defined in the IEEE 802.1Qaz specification. Signed-off-by: Mark Rustad Signed-off-by: John Fastabend Signed-off-by: David S. Miller --- include/linux/dcbnl.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/dcbnl.h b/include/linux/dcbnl.h index eedf79b7ef7e..c52280047e2c 100644 --- a/include/linux/dcbnl.h +++ b/include/linux/dcbnl.h @@ -125,6 +125,11 @@ struct cee_pfc { __u8 tcs_supported; }; +/* IEEE 802.1Qaz std supported values */ +#define IEEE_8021QAZ_APP_SEL_ETHERTYPE 1 +#define IEEE_8021QAZ_APP_SEL_STREAM 2 +#define IEEE_8021QAZ_APP_SEL_DGRAM 3 +#define IEEE_8021QAZ_APP_SEL_ANY 4 /* This structure contains the IEEE 802.1Qaz APP managed object. This * object is also used for the CEE std as well. There is no difference -- cgit v1.2.3 From a5b79d62f2e6d1b0d44bcdafce46f47bf355b9fe Mon Sep 17 00:00:00 2001 From: "stigge@antcom.de" Date: Thu, 20 Jan 2011 18:42:55 +0100 Subject: hwmon: Driver for Maxim MAX6639 2-Channel Temperature Monitor with Dual PWM Fan-Speed Controller Signed-off-by: Roland Stigge Signed-off-by: Guenter Roeck --- include/linux/i2c/max6639.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) create mode 100644 include/linux/i2c/max6639.h (limited to 'include/linux') diff --git a/include/linux/i2c/max6639.h b/include/linux/i2c/max6639.h new file mode 100644 index 000000000000..6011c42034da --- /dev/null +++ b/include/linux/i2c/max6639.h @@ -0,0 +1,14 @@ +#ifndef _LINUX_MAX6639_H +#define _LINUX_MAX6639_H + +#include + +/* platform data for the MAX6639 temperature sensor and fan control */ + +struct max6639_platform_data { + bool pwm_polarity; /* Polarity low (0) or high (1, default) */ + int ppr; /* Pulses per rotation 1..4 (default == 2) */ + int rpm_range; /* 2000, 4000 (default), 8000 or 16000 */ +}; + +#endif /* _LINUX_MAX6639_H */ -- cgit v1.2.3 From 442aba78728e77e03172ba83e905b9aff96febcf Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Wed, 26 Jan 2011 20:09:02 -0800 Subject: hwmon: PMBus device driver This driver adds support for hardware monitoring features of various PMBus devices. Signed-off-by: Guenter Roeck Acked-by: Jonathan Cameron --- include/linux/i2c/pmbus.h | 45 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 include/linux/i2c/pmbus.h (limited to 'include/linux') diff --git a/include/linux/i2c/pmbus.h b/include/linux/i2c/pmbus.h new file mode 100644 index 000000000000..69280db02c41 --- /dev/null +++ b/include/linux/i2c/pmbus.h @@ -0,0 +1,45 @@ +/* + * Hardware monitoring driver for PMBus devices + * + * Copyright (c) 2010, 2011 Ericsson AB. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#ifndef _PMBUS_H_ +#define _PMBUS_H_ + +/* flags */ + +/* + * PMBUS_SKIP_STATUS_CHECK + * + * During register detection, skip checking the status register for + * communication or command errors. + * + * Some PMBus chips respond with valid data when trying to read an unsupported + * register. For such chips, checking the status register is mandatory when + * trying to determine if a chip register exists or not. + * Other PMBus chips don't support the STATUS_CML register, or report + * communication errors for no explicable reason. For such chips, checking + * the status register must be disabled. + */ +#define PMBUS_SKIP_STATUS_CHECK (1 << 0) + +struct pmbus_platform_data { + u32 flags; /* Device specific flags */ +}; + +#endif /* _PMBUS_H_ */ -- cgit v1.2.3 From 990d6c2d7aee921e3bce22b2d6a750fd552262be Mon Sep 17 00:00:00 2001 From: "Aneesh Kumar K.V" Date: Sat, 29 Jan 2011 18:43:26 +0530 Subject: vfs: Add name to file handle conversion support The syscall also return mount id which can be used to lookup file system specific information such as uuid in /proc//mountinfo Signed-off-by: Aneesh Kumar K.V Signed-off-by: Al Viro --- include/linux/exportfs.h | 3 +++ include/linux/fs.h | 7 +++++++ include/linux/syscalls.h | 5 ++++- 3 files changed, 14 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/exportfs.h b/include/linux/exportfs.h index 65afdfd31b7b..33a42f24b275 100644 --- a/include/linux/exportfs.h +++ b/include/linux/exportfs.h @@ -8,6 +8,9 @@ struct inode; struct super_block; struct vfsmount; +/* limit the handle size to NFSv4 handle size now */ +#define MAX_HANDLE_SZ 128 + /* * The fileid_type identifies how the file within the filesystem is encoded. * In theory this is freely set and parsed by the filesystem, but we try to diff --git a/include/linux/fs.h b/include/linux/fs.h index b7178b05cf3a..3f64630c0e10 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -978,6 +978,13 @@ struct file { #endif }; +struct file_handle { + __u32 handle_bytes; + int handle_type; + /* file identifier */ + unsigned char f_handle[0]; +}; + #define get_file(x) atomic_long_inc(&(x)->f_count) #define fput_atomic(x) atomic_long_add_unless(&(x)->f_count, -1, 1) #define file_count(x) atomic_long_read(&(x)->f_count) diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 98664db1be47..970112613fb4 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -62,6 +62,7 @@ struct robust_list_head; struct getcpu_cache; struct old_linux_dirent; struct perf_event_attr; +struct file_handle; #include #include @@ -832,5 +833,7 @@ asmlinkage long sys_mmap_pgoff(unsigned long addr, unsigned long len, unsigned long prot, unsigned long flags, unsigned long fd, unsigned long pgoff); asmlinkage long sys_old_mmap(struct mmap_arg_struct __user *arg); - +asmlinkage long sys_name_to_handle_at(int dfd, const char __user *name, + struct file_handle __user *handle, + int __user *mnt_id, int flag); #endif -- cgit v1.2.3 From becfd1f37544798cbdfd788f32c827160fab98c1 Mon Sep 17 00:00:00 2001 From: "Aneesh Kumar K.V" Date: Sat, 29 Jan 2011 18:43:26 +0530 Subject: vfs: Add open by file handle support [AV: duplicate of open() guts removed; file_open_root() used instead] Signed-off-by: Aneesh Kumar K.V Signed-off-by: Al Viro --- include/linux/syscalls.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 970112613fb4..2d9b79c0f224 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -836,4 +836,7 @@ asmlinkage long sys_old_mmap(struct mmap_arg_struct __user *arg); asmlinkage long sys_name_to_handle_at(int dfd, const char __user *name, struct file_handle __user *handle, int __user *mnt_id, int flag); +asmlinkage long sys_open_by_handle_at(int mountdirfd, + struct file_handle __user *handle, + int flags); #endif -- cgit v1.2.3 From 93f1c20bc8cdb757be50566eff88d65c3b26881f Mon Sep 17 00:00:00 2001 From: "Aneesh Kumar K.V" Date: Sat, 29 Jan 2011 18:43:38 +0530 Subject: vfs: Export file system uuid via /proc//mountinfo We add a per superblock uuid field. File systems should update the uuid in the fill_super callback Signed-off-by: Aneesh Kumar K.V Signed-off-by: Al Viro --- include/linux/fs.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index 3f64630c0e10..f2143e0942c2 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1408,6 +1408,7 @@ struct super_block { wait_queue_head_t s_wait_unfrozen; char s_id[32]; /* Informational name */ + u8 s_uuid[16]; /* UUID */ void *s_fs_info; /* Filesystem private info */ fmode_t s_mode; -- cgit v1.2.3 From 1abf0c718f15a56a0a435588d1b104c7a37dc9bd Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 13 Mar 2011 03:51:11 -0400 Subject: New kind of open files - "location only". New flag for open(2) - O_PATH. Semantics: * pathname is resolved, but the file itself is _NOT_ opened as far as filesystem is concerned. * almost all operations on the resulting descriptors shall fail with -EBADF. Exceptions are: 1) operations on descriptors themselves (i.e. close(), dup(), dup2(), dup3(), fcntl(fd, F_DUPFD), fcntl(fd, F_DUPFD_CLOEXEC, ...), fcntl(fd, F_GETFD), fcntl(fd, F_SETFD, ...)) 2) fcntl(fd, F_GETFL), for a common non-destructive way to check if descriptor is open 3) "dfd" arguments of ...at(2) syscalls, i.e. the starting points of pathname resolution * closing such descriptor does *NOT* affect dnotify or posix locks. * permissions are checked as usual along the way to file; no permission checks are applied to the file itself. Of course, giving such thing to syscall will result in permission checks (at the moment it means checking that starting point of ....at() is a directory and caller has exec permissions on it). fget() and fget_light() return NULL on such descriptors; use of fget_raw() and fget_raw_light() is needed to get them. That protects existing code from dealing with those things. There are two things still missing (they come in the next commits): one is handling of symlinks (right now we refuse to open them that way; see the next commit for semantics related to those) and another is descriptor passing via SCM_RIGHTS datagrams. Signed-off-by: Al Viro --- include/linux/file.h | 2 ++ include/linux/fs.h | 3 +++ 2 files changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/file.h b/include/linux/file.h index e85baebf6279..21a79958541c 100644 --- a/include/linux/file.h +++ b/include/linux/file.h @@ -29,6 +29,8 @@ static inline void fput_light(struct file *file, int fput_needed) extern struct file *fget(unsigned int fd); extern struct file *fget_light(unsigned int fd, int *fput_needed); +extern struct file *fget_raw(unsigned int fd); +extern struct file *fget_raw_light(unsigned int fd, int *fput_needed); extern void set_close_on_exec(unsigned int fd, int flag); extern void put_filp(struct file *); extern int alloc_fd(unsigned start, unsigned flags); diff --git a/include/linux/fs.h b/include/linux/fs.h index f2143e0942c2..13df14e2c42e 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -102,6 +102,9 @@ struct inodes_stat_t { /* File is huge (eg. /dev/kmem): treat loff_t as unsigned */ #define FMODE_UNSIGNED_OFFSET ((__force fmode_t)0x2000) +/* File is opened with O_PATH; almost nothing can be done with it */ +#define FMODE_PATH ((__force fmode_t)0x4000) + /* File was opened by fanotify and shouldn't generate fanotify events */ #define FMODE_NONOTIFY ((__force fmode_t)0x1000000) -- cgit v1.2.3 From 4dce8ba94c751dd25f1d9b2d35c04312b046e5d6 Mon Sep 17 00:00:00 2001 From: Hannes Reinecke Date: Mon, 14 Mar 2011 08:54:20 +0100 Subject: libata: Use 'bool' return value for ata_id_XXX Most ata_id_XXX inlines are simple tests, so we should set the return value to 'bool' here. Signed-off-by: Hannes Reinecke Signed-off-by: Jeff Garzik --- include/linux/ata.h | 156 +++++++++++++++++++++++++--------------------------- 1 file changed, 75 insertions(+), 81 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ata.h b/include/linux/ata.h index 198e1ea2b2eb..32df2b6ef0e0 100644 --- a/include/linux/ata.h +++ b/include/linux/ata.h @@ -600,42 +600,42 @@ static inline bool ata_id_has_dipm(const u16 *id) } -static inline int ata_id_has_fua(const u16 *id) +static inline bool ata_id_has_fua(const u16 *id) { if ((id[ATA_ID_CFSSE] & 0xC000) != 0x4000) - return 0; + return false; return id[ATA_ID_CFSSE] & (1 << 6); } -static inline int ata_id_has_flush(const u16 *id) +static inline bool ata_id_has_flush(const u16 *id) { if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) - return 0; + return false; return id[ATA_ID_COMMAND_SET_2] & (1 << 12); } -static inline int ata_id_flush_enabled(const u16 *id) +static inline bool ata_id_flush_enabled(const u16 *id) { if (ata_id_has_flush(id) == 0) - return 0; + return false; if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000) - return 0; + return false; return id[ATA_ID_CFS_ENABLE_2] & (1 << 12); } -static inline int ata_id_has_flush_ext(const u16 *id) +static inline bool ata_id_has_flush_ext(const u16 *id) { if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) - return 0; + return false; return id[ATA_ID_COMMAND_SET_2] & (1 << 13); } -static inline int ata_id_flush_ext_enabled(const u16 *id) +static inline bool ata_id_flush_ext_enabled(const u16 *id) { if (ata_id_has_flush_ext(id) == 0) - return 0; + return false; if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000) - return 0; + return false; /* * some Maxtor disks have bit 13 defined incorrectly * so check bit 10 too @@ -688,64 +688,64 @@ static inline u16 ata_id_logical_sector_offset(const u16 *id, return 0; } -static inline int ata_id_has_lba48(const u16 *id) +static inline bool ata_id_has_lba48(const u16 *id) { if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) - return 0; + return false; if (!ata_id_u64(id, ATA_ID_LBA_CAPACITY_2)) - return 0; + return false; return id[ATA_ID_COMMAND_SET_2] & (1 << 10); } -static inline int ata_id_lba48_enabled(const u16 *id) +static inline bool ata_id_lba48_enabled(const u16 *id) { if (ata_id_has_lba48(id) == 0) - return 0; + return false; if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000) - return 0; + return false; return id[ATA_ID_CFS_ENABLE_2] & (1 << 10); } -static inline int ata_id_hpa_enabled(const u16 *id) +static inline bool ata_id_hpa_enabled(const u16 *id) { /* Yes children, word 83 valid bits cover word 82 data */ if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) - return 0; + return false; /* And 87 covers 85-87 */ if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000) - return 0; + return false; /* Check command sets enabled as well as supported */ if ((id[ATA_ID_CFS_ENABLE_1] & (1 << 10)) == 0) - return 0; + return false; return id[ATA_ID_COMMAND_SET_1] & (1 << 10); } -static inline int ata_id_has_wcache(const u16 *id) +static inline bool ata_id_has_wcache(const u16 *id) { /* Yes children, word 83 valid bits cover word 82 data */ if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) - return 0; + return false; return id[ATA_ID_COMMAND_SET_1] & (1 << 5); } -static inline int ata_id_has_pm(const u16 *id) +static inline bool ata_id_has_pm(const u16 *id) { if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) - return 0; + return false; return id[ATA_ID_COMMAND_SET_1] & (1 << 3); } -static inline int ata_id_rahead_enabled(const u16 *id) +static inline bool ata_id_rahead_enabled(const u16 *id) { if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000) - return 0; + return false; return id[ATA_ID_CFS_ENABLE_1] & (1 << 6); } -static inline int ata_id_wcache_enabled(const u16 *id) +static inline bool ata_id_wcache_enabled(const u16 *id) { if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000) - return 0; + return false; return id[ATA_ID_CFS_ENABLE_1] & (1 << 5); } @@ -775,7 +775,7 @@ static inline unsigned int ata_id_major_version(const u16 *id) return mver; } -static inline int ata_id_is_sata(const u16 *id) +static inline bool ata_id_is_sata(const u16 *id) { /* * See if word 93 is 0 AND drive is at least ATA-5 compatible @@ -784,37 +784,35 @@ static inline int ata_id_is_sata(const u16 *id) * 0x0000 and 0xffff along with the earlier ATA revisions... */ if (id[ATA_ID_HW_CONFIG] == 0 && (short)id[ATA_ID_MAJOR_VER] >= 0x0020) - return 1; - return 0; + return true; + return false; } -static inline int ata_id_has_tpm(const u16 *id) +static inline bool ata_id_has_tpm(const u16 *id) { /* The TPM bits are only valid on ATA8 */ if (ata_id_major_version(id) < 8) - return 0; + return false; if ((id[48] & 0xC000) != 0x4000) - return 0; + return false; return id[48] & (1 << 0); } -static inline int ata_id_has_dword_io(const u16 *id) +static inline bool ata_id_has_dword_io(const u16 *id) { /* ATA 8 reuses this flag for "trusted" computing */ if (ata_id_major_version(id) > 7) - return 0; - if (id[ATA_ID_DWORD_IO] & (1 << 0)) - return 1; - return 0; + return false; + return id[ATA_ID_DWORD_IO] & (1 << 0); } -static inline int ata_id_has_unload(const u16 *id) +static inline bool ata_id_has_unload(const u16 *id) { if (ata_id_major_version(id) >= 7 && (id[ATA_ID_CFSSE] & 0xC000) == 0x4000 && id[ATA_ID_CFSSE] & (1 << 13)) - return 1; - return 0; + return true; + return false; } static inline bool ata_id_has_wwn(const u16 *id) @@ -850,25 +848,25 @@ static inline int ata_id_rotation_rate(const u16 *id) return val; } -static inline int ata_id_has_trim(const u16 *id) +static inline bool ata_id_has_trim(const u16 *id) { if (ata_id_major_version(id) >= 7 && (id[ATA_ID_DATA_SET_MGMT] & 1)) - return 1; - return 0; + return true; + return false; } -static inline int ata_id_has_zero_after_trim(const u16 *id) +static inline bool ata_id_has_zero_after_trim(const u16 *id) { /* DSM supported, deterministic read, and read zero after trim set */ if (ata_id_has_trim(id) && (id[ATA_ID_ADDITIONAL_SUPP] & 0x4020) == 0x4020) - return 1; + return true; - return 0; + return false; } -static inline int ata_id_current_chs_valid(const u16 *id) +static inline bool ata_id_current_chs_valid(const u16 *id) { /* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command has not been issued to the device then the values of @@ -880,11 +878,11 @@ static inline int ata_id_current_chs_valid(const u16 *id) id[ATA_ID_CUR_SECTORS]; /* sectors in current translation */ } -static inline int ata_id_is_cfa(const u16 *id) +static inline bool ata_id_is_cfa(const u16 *id) { if ((id[ATA_ID_CONFIG] == 0x848A) || /* Traditional CF */ (id[ATA_ID_CONFIG] == 0x844A)) /* Delkin Devices CF */ - return 1; + return true; /* * CF specs don't require specific value in the word 0 anymore and yet * they forbid to report the ATA version in the word 80 and require the @@ -893,44 +891,40 @@ static inline int ata_id_is_cfa(const u16 *id) * and while those that don't indicate CFA feature support need some * sort of quirk list, it seems impractical for the ones that do... */ - if ((id[ATA_ID_COMMAND_SET_2] & 0xC004) == 0x4004) - return 1; - return 0; + return (id[ATA_ID_COMMAND_SET_2] & 0xC004) == 0x4004; } -static inline int ata_id_is_ssd(const u16 *id) +static inline bool ata_id_is_ssd(const u16 *id) { return id[ATA_ID_ROT_SPEED] == 0x01; } -static inline int ata_id_pio_need_iordy(const u16 *id, const u8 pio) +static inline bool ata_id_pio_need_iordy(const u16 *id, const u8 pio) { /* CF spec. r4.1 Table 22 says no IORDY on PIO5 and PIO6. */ if (pio > 4 && ata_id_is_cfa(id)) - return 0; + return false; /* For PIO3 and higher it is mandatory. */ if (pio > 2) - return 1; + return true; /* Turn it on when possible. */ - if (ata_id_has_iordy(id)) - return 1; - return 0; + return ata_id_has_iordy(id); } -static inline int ata_drive_40wire(const u16 *dev_id) +static inline bool ata_drive_40wire(const u16 *dev_id) { if (ata_id_is_sata(dev_id)) - return 0; /* SATA */ + return false; /* SATA */ if ((dev_id[ATA_ID_HW_CONFIG] & 0xE000) == 0x6000) - return 0; /* 80 wire */ - return 1; + return false; /* 80 wire */ + return true; } -static inline int ata_drive_40wire_relaxed(const u16 *dev_id) +static inline bool ata_drive_40wire_relaxed(const u16 *dev_id) { if ((dev_id[ATA_ID_HW_CONFIG] & 0x2000) == 0x2000) - return 0; /* 80 wire */ - return 1; + return false; /* 80 wire */ + return true; } static inline int atapi_cdb_len(const u16 *dev_id) @@ -943,12 +937,12 @@ static inline int atapi_cdb_len(const u16 *dev_id) } } -static inline int atapi_command_packet_set(const u16 *dev_id) +static inline bool atapi_command_packet_set(const u16 *dev_id) { return (dev_id[ATA_ID_CONFIG] >> 8) & 0x1f; } -static inline int atapi_id_dmadir(const u16 *dev_id) +static inline bool atapi_id_dmadir(const u16 *dev_id) { return ata_id_major_version(dev_id) >= 7 && (dev_id[62] & 0x8000); } @@ -961,13 +955,13 @@ static inline int atapi_id_dmadir(const u16 *dev_id) * * It is called only once for each device. */ -static inline int ata_id_is_lba_capacity_ok(u16 *id) +static inline bool ata_id_is_lba_capacity_ok(u16 *id) { unsigned long lba_sects, chs_sects, head, tail; /* No non-LBA info .. so valid! */ if (id[ATA_ID_CYLS] == 0) - return 1; + return true; lba_sects = ata_id_u32(id, ATA_ID_LBA_CAPACITY); @@ -982,13 +976,13 @@ static inline int ata_id_is_lba_capacity_ok(u16 *id) id[ATA_ID_SECTORS] == 63 && (id[ATA_ID_HEADS] == 15 || id[ATA_ID_HEADS] == 16) && (lba_sects >= 16383 * 63 * id[ATA_ID_HEADS])) - return 1; + return true; chs_sects = id[ATA_ID_CYLS] * id[ATA_ID_HEADS] * id[ATA_ID_SECTORS]; /* perform a rough sanity check on lba_sects: within 10% is OK */ if (lba_sects - chs_sects < chs_sects/10) - return 1; + return true; /* some drives have the word order reversed */ head = (lba_sects >> 16) & 0xffff; @@ -997,10 +991,10 @@ static inline int ata_id_is_lba_capacity_ok(u16 *id) if (lba_sects - chs_sects < chs_sects/10) { *(__le32 *)&id[ATA_ID_LBA_CAPACITY] = __cpu_to_le32(lba_sects); - return 1; /* LBA capacity is (now) good */ + return true; /* LBA capacity is (now) good */ } - return 0; /* LBA capacity value may be bad */ + return false; /* LBA capacity value may be bad */ } static inline void ata_id_to_hd_driveid(u16 *id) @@ -1058,19 +1052,19 @@ static inline int is_multi_taskfile(struct ata_taskfile *tf) (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT); } -static inline int ata_ok(u8 status) +static inline bool ata_ok(u8 status) { return ((status & (ATA_BUSY | ATA_DRDY | ATA_DF | ATA_DRQ | ATA_ERR)) == ATA_DRDY); } -static inline int lba_28_ok(u64 block, u32 n_block) +static inline bool lba_28_ok(u64 block, u32 n_block) { /* check the ending block number: must be LESS THAN 0x0fffffff */ return ((block + n_block) < ((1 << 28) - 1)) && (n_block <= 256); } -static inline int lba_48_ok(u64 block, u32 n_block) +static inline bool lba_48_ok(u64 block, u32 n_block) { /* check the ending block number */ return ((block + n_block - 1) < ((u64)1 << 48)) && (n_block <= 65536); -- cgit v1.2.3 From 31ef9134eb52636d383a7d0626cbbd345cb94f2f Mon Sep 17 00:00:00 2001 From: Clemens Ladisch Date: Tue, 15 Mar 2011 07:53:21 +0100 Subject: ALSA: add LaCie FireWire Speakers/Griffin FireWave Surround driver Add a driver for two playback-only FireWire devices based on the OXFW970 chip. v2: better AMDTP API abstraction; fix fw_unit leak; small fixes v3: cache the iPCR value v4: FireWave constraints; fix fw_device reference counting; fix PCR caching; small changes and fixes v5: volume/mute support; fix crashing due to pcm stop races v6: fix build; one-channel volume for LaCie v7: use signed values to make volume (range checks) work; fix function block IDs for volume/mute; always use channel 0 for LaCie volume Signed-off-by: Clemens Ladisch Acked-by: Stefan Richter Tested-by: Jay Fenlason Signed-off-by: Takashi Iwai --- include/linux/firewire.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/firewire.h b/include/linux/firewire.h index 9a3f5f9383f6..fc023d67676f 100644 --- a/include/linux/firewire.h +++ b/include/linux/firewire.h @@ -42,6 +42,10 @@ #define CSR_BROADCAST_CHANNEL 0x234 #define CSR_CONFIG_ROM 0x400 #define CSR_CONFIG_ROM_END 0x800 +#define CSR_OMPR 0x900 +#define CSR_OPCR(i) (0x904 + (i) * 4) +#define CSR_IMPR 0x980 +#define CSR_IPCR(i) (0x984 + (i) * 4) #define CSR_FCP_COMMAND 0xB00 #define CSR_FCP_RESPONSE 0xD00 #define CSR_FCP_END 0xF00 @@ -441,5 +445,8 @@ int fw_iso_context_start(struct fw_iso_context *ctx, int cycle, int sync, int tags); int fw_iso_context_stop(struct fw_iso_context *ctx); void fw_iso_context_destroy(struct fw_iso_context *ctx); +void fw_iso_resource_manage(struct fw_card *card, int generation, + u64 channels_mask, int *channel, int *bandwidth, + bool allocate, __be32 buffer[2]); #endif /* _LINUX_FIREWIRE_H */ -- cgit v1.2.3 From 03df0f629483f941f83ee2fbb180a4425e99dd23 Mon Sep 17 00:00:00 2001 From: Cyril Chemparathy Date: Tue, 18 Jan 2011 19:21:35 +0000 Subject: mfd: add driver for sequencer serial port TI's sequencer serial port (TI-SSP) is a jack-of-all-trades type of serial port device. It has a built-in programmable execution engine that can be programmed to operate as almost any serial bus (I2C, SPI, EasyScale, and others). This patch adds a driver for this controller device. The driver does not expose a user-land interface. Protocol drivers built on top of this layer are expected to remain in-kernel. Signed-off-by: Cyril Chemparathy Acked-by: Samuel Ortiz Signed-off-by: Sekhar Nori Signed-off-by: Kevin Hilman --- include/linux/mfd/ti_ssp.h | 87 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 87 insertions(+) create mode 100644 include/linux/mfd/ti_ssp.h (limited to 'include/linux') diff --git a/include/linux/mfd/ti_ssp.h b/include/linux/mfd/ti_ssp.h new file mode 100644 index 000000000000..021fe0912435 --- /dev/null +++ b/include/linux/mfd/ti_ssp.h @@ -0,0 +1,87 @@ +/* + * Sequencer Serial Port (SSP) driver for Texas Instruments' SoCs + * + * Copyright (C) 2010 Texas Instruments Inc + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#ifndef __TI_SSP_H__ +#define __TI_SSP_H__ + +struct ti_ssp_dev_data { + const char *dev_name; + void *pdata; + size_t pdata_size; +}; + +struct ti_ssp_data { + unsigned long out_clock; + struct ti_ssp_dev_data dev_data[2]; +}; + +/* + * Sequencer port IO pin configuration bits. These do not correlate 1-1 with + * the hardware. The iosel field in the port data combines iosel1 and iosel2, + * and is therefore not a direct map to register space. It is best to use the + * macros below to construct iosel values. + * + * least significant 16 bits --> iosel1 + * most significant 16 bits --> iosel2 + */ + +#define SSP_IN 0x0000 +#define SSP_DATA 0x0001 +#define SSP_CLOCK 0x0002 +#define SSP_CHIPSEL 0x0003 +#define SSP_OUT 0x0004 +#define SSP_PIN_SEL(pin, v) ((v) << ((pin) * 3)) +#define SSP_PIN_MASK(pin) SSP_PIN_SEL(pin, 0x7) +#define SSP_INPUT_SEL(pin) ((pin) << 16) + +/* Sequencer port config bits */ +#define SSP_EARLY_DIN BIT(8) +#define SSP_DELAY_DOUT BIT(9) + +/* Sequence map definitions */ +#define SSP_CLK_HIGH BIT(0) +#define SSP_CLK_LOW 0 +#define SSP_DATA_HIGH BIT(1) +#define SSP_DATA_LOW 0 +#define SSP_CS_HIGH BIT(2) +#define SSP_CS_LOW 0 +#define SSP_OUT_MODE BIT(3) +#define SSP_IN_MODE 0 +#define SSP_DATA_REG BIT(4) +#define SSP_ADDR_REG 0 + +#define SSP_OPCODE_DIRECT ((0x0) << 5) +#define SSP_OPCODE_TOGGLE ((0x1) << 5) +#define SSP_OPCODE_SHIFT ((0x2) << 5) +#define SSP_OPCODE_BRANCH0 ((0x4) << 5) +#define SSP_OPCODE_BRANCH1 ((0x5) << 5) +#define SSP_OPCODE_BRANCH ((0x6) << 5) +#define SSP_OPCODE_STOP ((0x7) << 5) +#define SSP_BRANCH(addr) ((addr) << 8) +#define SSP_COUNT(cycles) ((cycles) << 8) + +int ti_ssp_raw_read(struct device *dev); +int ti_ssp_raw_write(struct device *dev, u32 val); +int ti_ssp_load(struct device *dev, int offs, u32* prog, int len); +int ti_ssp_run(struct device *dev, u32 pc, u32 input, u32 *output); +int ti_ssp_set_mode(struct device *dev, int mode); +int ti_ssp_set_iosel(struct device *dev, u32 iosel); + +#endif /* __TI_SSP_H__ */ -- cgit v1.2.3 From a72aeefebe6545ad5c9c699e1121019c1709ca77 Mon Sep 17 00:00:00 2001 From: Cyril Chemparathy Date: Tue, 18 Jan 2011 19:21:36 +0000 Subject: spi: add ti-ssp spi master driver This patch adds an SPI master implementation that operates on top of an underlying TI-SSP port. Acked-by: Grant Likely Signed-off-by: Cyril Chemparathy Signed-off-by: Sekhar Nori Signed-off-by: Kevin Hilman --- include/linux/mfd/ti_ssp.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/ti_ssp.h b/include/linux/mfd/ti_ssp.h index 021fe0912435..dbb4b43bd20e 100644 --- a/include/linux/mfd/ti_ssp.h +++ b/include/linux/mfd/ti_ssp.h @@ -32,6 +32,12 @@ struct ti_ssp_data { struct ti_ssp_dev_data dev_data[2]; }; +struct ti_ssp_spi_data { + unsigned long iosel; + int num_cs; + void (*select)(int cs); +}; + /* * Sequencer port IO pin configuration bits. These do not correlate 1-1 with * the hardware. The iosel field in the port data combines iosel1 and iosel2, -- cgit v1.2.3 From 709de99df0ecf3102e7728fbd876a3591859f423 Mon Sep 17 00:00:00 2001 From: Chuanxiao Dong Date: Sat, 22 Jan 2011 04:09:41 +0800 Subject: mmc: export eMMC4.4 enhanced area details to sysfs Enhanced area feature is a new feature defined in eMMC4.4 standard. This user data area provides higher performance/reliability, at the expense of using twice the effective media space due to the area using SLC. The MMC driver now reads out the enhanced area offset and size and adds them to the device attributes in sysfs. Enabling the enhanced area can only be done once, and should be done in manufacturing. To use this feature, bit ERASE_GRP_DEF should also be set. Documentation/ABI/testing/sysfs-devices-mmc describes the two new attributes. Signed-off-by: Chuanxiao Dong Reviewed-by: Chris Ball Signed-off-by: Chris Ball --- include/linux/mmc/card.h | 3 +++ include/linux/mmc/mmc.h | 3 +++ 2 files changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h index 8ce082781ccb..4652cf9c5442 100644 --- a/include/linux/mmc/card.h +++ b/include/linux/mmc/card.h @@ -54,6 +54,9 @@ struct mmc_ext_csd { unsigned int sec_trim_mult; /* Secure trim multiplier */ unsigned int sec_erase_mult; /* Secure erase multiplier */ unsigned int trim_timeout; /* In milliseconds */ + bool enhanced_area_en; /* enable bit */ + unsigned long long enhanced_area_offset; /* Units: Byte */ + unsigned int enhanced_area_size; /* Units: KB */ }; struct sd_scr { diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h index 612301f85d14..264ba5451e3b 100644 --- a/include/linux/mmc/mmc.h +++ b/include/linux/mmc/mmc.h @@ -253,6 +253,8 @@ struct _mmc_csd { * EXT_CSD fields */ +#define EXT_CSD_PARTITION_ATTRIBUTE 156 /* R/W */ +#define EXT_CSD_PARTITION_SUPPORT 160 /* RO */ #define EXT_CSD_ERASE_GROUP_DEF 175 /* R/W */ #define EXT_CSD_ERASED_MEM_CONT 181 /* RO */ #define EXT_CSD_BUS_WIDTH 183 /* R/W */ @@ -262,6 +264,7 @@ struct _mmc_csd { #define EXT_CSD_CARD_TYPE 196 /* RO */ #define EXT_CSD_SEC_CNT 212 /* RO, 4 bytes */ #define EXT_CSD_S_A_TIMEOUT 217 /* RO */ +#define EXT_CSD_HC_WP_GRP_SIZE 221 /* RO */ #define EXT_CSD_ERASE_TIMEOUT_MULT 223 /* RO */ #define EXT_CSD_HC_ERASE_GRP_SIZE 224 /* RO */ #define EXT_CSD_SEC_TRIM_MULT 229 /* RO */ -- cgit v1.2.3 From 57f0adc7eaaf4315d568e72069dbe48aa7e20995 Mon Sep 17 00:00:00 2001 From: Pierre Tardy Date: Sun, 6 Feb 2011 19:03:46 +0100 Subject: mmc: add per device quirk placeholder Some cards have quirks valid for every platforms using current platform quirk hooks leads to a lot of code and debug duplication. So we inspire a bit from what exists in PCI subsystem and do our own per vendorid/deviceid quirk. We still drop the complexity of the pci quirk system (with special section tables, and so on). That can be added later if needed. Signed-off-by: Pierre Tardy Acked-by: Linus Walleij Acked-by: Ohad Ben-Cohen Signed-off-by: Chris Ball --- include/linux/mmc/card.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h index 4652cf9c5442..ad7413854f79 100644 --- a/include/linux/mmc/card.h +++ b/include/linux/mmc/card.h @@ -151,6 +151,8 @@ struct mmc_card { struct dentry *debugfs_root; }; +void mmc_fixup_device(struct mmc_card *dev); + #define mmc_card_mmc(c) ((c)->type == MMC_TYPE_MMC) #define mmc_card_sd(c) ((c)->type == MMC_TYPE_SD) #define mmc_card_sdio(c) ((c)->type == MMC_TYPE_SDIO) -- cgit v1.2.3 From db9935000d95ae3f9702b7ff6ac0eef2319d8772 Mon Sep 17 00:00:00 2001 From: Pierre Tardy Date: Sun, 6 Feb 2011 19:03:47 +0100 Subject: mmc: add MMC_QUIRK_BROKEN_CLK_GATING Some sdio card are not following sdio standard, and do not work when the sdio bus's clock is gated. To keep functionnality for all legacy driver, we turn this quirk on for every sdio card. Drivers needs to disable the quirk manually when someone verifies that their supported card works with clock gating. Signed-off-by: Pierre Tardy Acked-by: Ohad Ben-Cohen Signed-off-by: Chris Ball --- include/linux/mmc/card.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h index ad7413854f79..adb4888248be 100644 --- a/include/linux/mmc/card.h +++ b/include/linux/mmc/card.h @@ -124,6 +124,7 @@ struct mmc_card { /* for byte mode */ #define MMC_QUIRK_NONSTD_SDIO (1<<2) /* non-standard SDIO card attached */ /* (missing CIA registers) */ +#define MMC_QUIRK_BROKEN_CLK_GATING (1<<3) /* clock gating the sdio bus will make card fail */ unsigned int erase_size; /* erase size in sectors */ unsigned int erase_shift; /* if erase unit is power 2 */ -- cgit v1.2.3 From 37b7785e3ac5128809340eaeb791ca7a471c4e32 Mon Sep 17 00:00:00 2001 From: Jaehoon Chung Date: Thu, 17 Feb 2011 13:09:04 +0900 Subject: mmc: dw_mmc: modify quirks bit-shift control If we need some quirks, maybe add quirks in future But now, quirks value set to integer..later we should be confused.. So I think that need bit-shift control. And If we need not any quirks, we didn't set anything.. (Need not DW_MCI_QUIRK_NONE) Signed-off-by: Jaehoon Chung Acked-by: Will Newton Signed-off-by: Chris Ball --- include/linux/mmc/dw_mmc.h | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mmc/dw_mmc.h b/include/linux/mmc/dw_mmc.h index 16b0261763ed..3f22c201ee3a 100644 --- a/include/linux/mmc/dw_mmc.h +++ b/include/linux/mmc/dw_mmc.h @@ -165,14 +165,12 @@ struct dw_mci_dma_ops { }; /* IP Quirks/flags. */ -/* No special quirks or flags to cater for */ -#define DW_MCI_QUIRK_NONE 0 /* DTO fix for command transmission with IDMAC configured */ -#define DW_MCI_QUIRK_IDMAC_DTO 1 +#define DW_MCI_QUIRK_IDMAC_DTO BIT(0) /* delay needed between retries on some 2.11a implementations */ -#define DW_MCI_QUIRK_RETRY_DELAY 2 +#define DW_MCI_QUIRK_RETRY_DELAY BIT(1) /* High Speed Capable - Supports HS cards (upto 50MHz) */ -#define DW_MCI_QUIRK_HIGHSPEED 4 +#define DW_MCI_QUIRK_HIGHSPEED BIT(2) struct dma_pdata; -- cgit v1.2.3 From de81bbea17650769882bc625d6b5df11ee7c4b24 Mon Sep 17 00:00:00 2001 From: Florian Westphal Date: Tue, 15 Mar 2011 20:16:20 +0100 Subject: netfilter: ipt_addrtype: rename to xt_addrtype Followup patch will add ipv6 support. ipt_addrtype.h is retained for compatibility reasons, but no longer used by the kernel. Signed-off-by: Florian Westphal Signed-off-by: Patrick McHardy --- include/linux/netfilter/Kbuild | 1 + include/linux/netfilter/xt_addrtype.h | 27 +++++++++++++++++++++++++++ 2 files changed, 28 insertions(+) create mode 100644 include/linux/netfilter/xt_addrtype.h (limited to 'include/linux') diff --git a/include/linux/netfilter/Kbuild b/include/linux/netfilter/Kbuild index 15e83bf3dd58..a1b410c76fc3 100644 --- a/include/linux/netfilter/Kbuild +++ b/include/linux/netfilter/Kbuild @@ -29,6 +29,7 @@ header-y += xt_TCPMSS.h header-y += xt_TCPOPTSTRIP.h header-y += xt_TEE.h header-y += xt_TPROXY.h +header-y += xt_addrtype.h header-y += xt_cluster.h header-y += xt_comment.h header-y += xt_connbytes.h diff --git a/include/linux/netfilter/xt_addrtype.h b/include/linux/netfilter/xt_addrtype.h new file mode 100644 index 000000000000..b492fc84f737 --- /dev/null +++ b/include/linux/netfilter/xt_addrtype.h @@ -0,0 +1,27 @@ +#ifndef _XT_ADDRTYPE_H +#define _XT_ADDRTYPE_H + +#include + +enum { + XT_ADDRTYPE_INVERT_SOURCE = 0x0001, + XT_ADDRTYPE_INVERT_DEST = 0x0002, + XT_ADDRTYPE_LIMIT_IFACE_IN = 0x0004, + XT_ADDRTYPE_LIMIT_IFACE_OUT = 0x0008, +}; + +struct xt_addrtype_info_v1 { + __u16 source; /* source-type mask */ + __u16 dest; /* dest-type mask */ + __u32 flags; +}; + +/* revision 0 */ +struct xt_addrtype_info { + __u16 source; /* source-type mask */ + __u16 dest; /* dest-type mask */ + __u32 invert_source; + __u32 invert_dest; +}; + +#endif -- cgit v1.2.3 From 2f5dc63123905a89d4260ab8ee08d19ec104db04 Mon Sep 17 00:00:00 2001 From: Florian Westphal Date: Tue, 15 Mar 2011 20:17:44 +0100 Subject: netfilter: xt_addrtype: ipv6 support The kernel will refuse certain types that do not work in ipv6 mode. We can then add these features incrementally without risk of userspace breakage. Signed-off-by: Florian Westphal Signed-off-by: Patrick McHardy --- include/linux/netfilter/xt_addrtype.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'include/linux') diff --git a/include/linux/netfilter/xt_addrtype.h b/include/linux/netfilter/xt_addrtype.h index b492fc84f737..b156baa9d55e 100644 --- a/include/linux/netfilter/xt_addrtype.h +++ b/include/linux/netfilter/xt_addrtype.h @@ -10,6 +10,23 @@ enum { XT_ADDRTYPE_LIMIT_IFACE_OUT = 0x0008, }; + +/* rtn_type enum values from rtnetlink.h, but shifted */ +enum { + XT_ADDRTYPE_UNSPEC = 1 << 0, + XT_ADDRTYPE_UNICAST = 1 << 1, /* 1 << RTN_UNICAST */ + XT_ADDRTYPE_LOCAL = 1 << 2, /* 1 << RTN_LOCAL, etc */ + XT_ADDRTYPE_BROADCAST = 1 << 3, + XT_ADDRTYPE_ANYCAST = 1 << 4, + XT_ADDRTYPE_MULTICAST = 1 << 5, + XT_ADDRTYPE_BLACKHOLE = 1 << 6, + XT_ADDRTYPE_UNREACHABLE = 1 << 7, + XT_ADDRTYPE_PROHIBIT = 1 << 8, + XT_ADDRTYPE_THROW = 1 << 9, + XT_ADDRTYPE_NAT = 1 << 10, + XT_ADDRTYPE_XRESOLVE = 1 << 11, +}; + struct xt_addrtype_info_v1 { __u16 source; /* source-type mask */ __u16 dest; /* dest-type mask */ -- cgit v1.2.3 From ee643c4179c3a18b018de3a4c07a7bb3a75c8e4e Mon Sep 17 00:00:00 2001 From: Richard Kennedy Date: Mon, 7 Mar 2011 15:46:59 +0000 Subject: perf: Reorder & optimize perf_event_context to remove alignment padding on 64 bit builds Remove 8 bytes of alignment padding from perf_event_context on 64 bit builds which shrinks its size to 192 bytes allowing it to fit into one fewer cache lines and into a smaller slab. Signed-off-by: Richard Kennedy Signed-off-by: Peter Zijlstra LKML-Reference: <1299512819.2039.5.camel@castor.rsk> Signed-off-by: Ingo Molnar --- include/linux/perf_event.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index 614615b8d42b..f495c0147240 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -878,8 +878,8 @@ enum perf_event_context_type { * Used as a container for task events and CPU events as well: */ struct perf_event_context { - enum perf_event_context_type type; struct pmu *pmu; + enum perf_event_context_type type; /* * Protect the states of the events in the list, * nr_active, and the list: -- cgit v1.2.3 From 8a4eb5734e8d1dc60a8c28576bbbdfdcc643626d Mon Sep 17 00:00:00 2001 From: Jiri Pirko Date: Sat, 12 Mar 2011 03:14:39 +0000 Subject: net: introduce rx_handler results and logic around that MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This patch allows rx_handlers to better signalize what to do next to it's caller. That makes skb->deliver_no_wcard no longer needed. kernel-doc for rx_handler_result is taken from Nicolas' patch. Signed-off-by: Jiri Pirko Reviewed-by: Nicolas de Pesloüan Signed-off-by: David S. Miller --- include/linux/netdevice.h | 50 ++++++++++++++++++++++++++++++++++++++++++++++- include/linux/skbuff.h | 5 +---- 2 files changed, 50 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 604dbf5051d3..5eeb2cd3631c 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -390,7 +390,55 @@ enum gro_result { }; typedef enum gro_result gro_result_t; -typedef struct sk_buff *rx_handler_func_t(struct sk_buff *skb); +/* + * enum rx_handler_result - Possible return values for rx_handlers. + * @RX_HANDLER_CONSUMED: skb was consumed by rx_handler, do not process it + * further. + * @RX_HANDLER_ANOTHER: Do another round in receive path. This is indicated in + * case skb->dev was changed by rx_handler. + * @RX_HANDLER_EXACT: Force exact delivery, no wildcard. + * @RX_HANDLER_PASS: Do nothing, passe the skb as if no rx_handler was called. + * + * rx_handlers are functions called from inside __netif_receive_skb(), to do + * special processing of the skb, prior to delivery to protocol handlers. + * + * Currently, a net_device can only have a single rx_handler registered. Trying + * to register a second rx_handler will return -EBUSY. + * + * To register a rx_handler on a net_device, use netdev_rx_handler_register(). + * To unregister a rx_handler on a net_device, use + * netdev_rx_handler_unregister(). + * + * Upon return, rx_handler is expected to tell __netif_receive_skb() what to + * do with the skb. + * + * If the rx_handler consumed to skb in some way, it should return + * RX_HANDLER_CONSUMED. This is appropriate when the rx_handler arranged for + * the skb to be delivered in some other ways. + * + * If the rx_handler changed skb->dev, to divert the skb to another + * net_device, it should return RX_HANDLER_ANOTHER. The rx_handler for the + * new device will be called if it exists. + * + * If the rx_handler consider the skb should be ignored, it should return + * RX_HANDLER_EXACT. The skb will only be delivered to protocol handlers that + * are registred on exact device (ptype->dev == skb->dev). + * + * If the rx_handler didn't changed skb->dev, but want the skb to be normally + * delivered, it should return RX_HANDLER_PASS. + * + * A device without a registered rx_handler will behave as if rx_handler + * returned RX_HANDLER_PASS. + */ + +enum rx_handler_result { + RX_HANDLER_CONSUMED, + RX_HANDLER_ANOTHER, + RX_HANDLER_EXACT, + RX_HANDLER_PASS, +}; +typedef enum rx_handler_result rx_handler_result_t; +typedef rx_handler_result_t rx_handler_func_t(struct sk_buff **pskb); extern void __napi_schedule(struct napi_struct *n); diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 31f02d0b46a7..24cfa626931e 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -388,10 +388,7 @@ struct sk_buff { kmemcheck_bitfield_begin(flags2); __u16 queue_mapping:16; #ifdef CONFIG_IPV6_NDISC_NODETYPE - __u8 ndisc_nodetype:2, - deliver_no_wcard:1; -#else - __u8 deliver_no_wcard:1; + __u8 ndisc_nodetype:2; #endif __u8 ooo_okay:1; kmemcheck_bitfield_end(flags2); -- cgit v1.2.3 From c7f404b40a3665d9f4e9a927cc5c1ee0479ed8f9 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Wed, 16 Mar 2011 06:59:40 -0400 Subject: vfs: new superblock methods to override /proc/*/mount{s,info} a) ->show_devname(m, mnt) - what to put into devname columns in mounts, mountinfo and mountstats b) ->show_path(m, mnt) - what to put into relative path column in mountinfo Leaving those NULL gives old behaviour. NFS switched to using those. Signed-off-by: Al Viro --- include/linux/fs.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index 13df14e2c42e..e6d3fe45981b 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1632,6 +1632,8 @@ struct super_operations { void (*umount_begin) (struct super_block *); int (*show_options)(struct seq_file *, struct vfsmount *); + int (*show_devname)(struct seq_file *, struct vfsmount *); + int (*show_path)(struct seq_file *, struct vfsmount *); int (*show_stats)(struct seq_file *, struct vfsmount *); #ifdef CONFIG_QUOTA ssize_t (*quota_read)(struct super_block *, int, char *, size_t, loff_t); -- cgit v1.2.3 From 1a102ff92579edeff5e3d5d3c76ca49977898f00 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Wed, 16 Mar 2011 09:07:58 -0400 Subject: vfs: bury ->get_sb() This is an ex-parrot. Signed-off-by: Al Viro --- include/linux/fs.h | 14 -------------- 1 file changed, 14 deletions(-) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index e6d3fe45981b..ffaa0e4926ed 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1797,8 +1797,6 @@ int sync_inode_metadata(struct inode *inode, int wait); struct file_system_type { const char *name; int fs_flags; - int (*get_sb) (struct file_system_type *, int, - const char *, void *, struct vfsmount *); struct dentry *(*mount) (struct file_system_type *, int, const char *, void *); void (*kill_sb) (struct super_block *); @@ -1821,24 +1819,12 @@ extern struct dentry *mount_ns(struct file_system_type *fs_type, int flags, extern struct dentry *mount_bdev(struct file_system_type *fs_type, int flags, const char *dev_name, void *data, int (*fill_super)(struct super_block *, void *, int)); -extern int get_sb_bdev(struct file_system_type *fs_type, - int flags, const char *dev_name, void *data, - int (*fill_super)(struct super_block *, void *, int), - struct vfsmount *mnt); extern struct dentry *mount_single(struct file_system_type *fs_type, int flags, void *data, int (*fill_super)(struct super_block *, void *, int)); -extern int get_sb_single(struct file_system_type *fs_type, - int flags, void *data, - int (*fill_super)(struct super_block *, void *, int), - struct vfsmount *mnt); extern struct dentry *mount_nodev(struct file_system_type *fs_type, int flags, void *data, int (*fill_super)(struct super_block *, void *, int)); -extern int get_sb_nodev(struct file_system_type *fs_type, - int flags, void *data, - int (*fill_super)(struct super_block *, void *, int), - struct vfsmount *mnt); void generic_shutdown_super(struct super_block *sb); void kill_block_super(struct super_block *sb); void kill_anon_super(struct super_block *sb); -- cgit v1.2.3 From e8951251b89440644a39f2512b4f265973926b41 Mon Sep 17 00:00:00 2001 From: Thomas Renninger Date: Thu, 3 Mar 2011 21:31:26 +0100 Subject: [CPUFREQ] Remove old, deprecated per cpu ondemand/conservative sysfs files Marked deprecated for quite a whilte now... Signed-off-by: Thomas Renninger Signed-off-by: Dave Jones CC: cpufreq@vger.kernel.org --- include/linux/cpufreq.h | 9 --------- 1 file changed, 9 deletions(-) (limited to 'include/linux') diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index c3e9de8321c6..f2fe598feb4e 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -281,19 +281,10 @@ __ATTR(_name, 0444, show_##_name, NULL) static struct freq_attr _name = \ __ATTR(_name, _perm, show_##_name, NULL) -#define cpufreq_freq_attr_ro_old(_name) \ -static struct freq_attr _name##_old = \ -__ATTR(_name, 0444, show_##_name##_old, NULL) - #define cpufreq_freq_attr_rw(_name) \ static struct freq_attr _name = \ __ATTR(_name, 0644, show_##_name, store_##_name) -#define cpufreq_freq_attr_rw_old(_name) \ -static struct freq_attr _name##_old = \ -__ATTR(_name, 0644, show_##_name##_old, store_##_name##_old) - - struct global_attr { struct attribute attr; ssize_t (*show)(struct kobject *kobj, -- cgit v1.2.3 From 7ca64e2d2859e96a325c28678b5fdb5e17a5764b Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Thu, 10 Mar 2011 21:13:05 +0100 Subject: [CPUFREQ] Remove the pm_message_t argument from driver suspend None of the existing cpufreq drivers uses the second argument of its .suspend() callback (which isn't useful anyway), so remove it. Signed-off-by: Rafael J. Wysocki Signed-off-by: Dave Jones --- include/linux/cpufreq.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index f2fe598feb4e..9343dd3de858 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -230,7 +230,7 @@ struct cpufreq_driver { int (*bios_limit) (int cpu, unsigned int *limit); int (*exit) (struct cpufreq_policy *policy); - int (*suspend) (struct cpufreq_policy *policy, pm_message_t pmsg); + int (*suspend) (struct cpufreq_policy *policy); int (*resume) (struct cpufreq_policy *policy); struct freq_attr **attr; }; -- cgit v1.2.3 From ce443ab5fd536941da1d529ba3963324f941fc29 Mon Sep 17 00:00:00 2001 From: GuanXuetao Date: Sat, 26 Feb 2011 21:39:10 +0800 Subject: unicore32 machine related: add frame buffer driver for pkunity-v3 soc change from original version -- by advice of Paul Mundt 1. remove videomemorysize definitions 2. remove unifb_enable and unifb_setup 3. use dev_warn instead of printk in fb driver 4. remove judgement for FB_ACCEL_PUV3_UNIGFX 5. adjust clk_get and clk_set_rate calls 6. add resources definitions 7. remove unifb_option 8. adjust register for platform_device 9. adjust unifb_ops position and unifb_regs assignment position Signed-off-by: Guan Xuetao Acked-by: Arnd Bergmann --- include/linux/fb.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/fb.h b/include/linux/fb.h index 68ba85a00c06..b2a36391d2a1 100644 --- a/include/linux/fb.h +++ b/include/linux/fb.h @@ -152,6 +152,8 @@ #define FB_ACCEL_PROSAVAGE_DDR 0x8d /* S3 ProSavage DDR */ #define FB_ACCEL_PROSAVAGE_DDRK 0x8e /* S3 ProSavage DDR-K */ +#define FB_ACCEL_PUV3_UNIGFX 0xa0 /* PKUnity-v3 Unigfx */ + struct fb_fix_screeninfo { char id[16]; /* identification string eg "TT Builtin" */ unsigned long smem_start; /* Start of frame buffer mem */ -- cgit v1.2.3 From 37bd44694c7215e3e46e6ee4a930d197325a7168 Mon Sep 17 00:00:00 2001 From: Lauri Leukkunen Date: Wed, 16 Mar 2011 22:07:36 -0700 Subject: Input: introduce tsc2005 driver Discussions: http://www.mail-archive.com/linux-omap@vger.kernel.org/msg26748.html Introduce a driver for the Texas Instruments TSC2005 touchscreen controller (http://focus.ti.com/docs/prod/folders/print/tsc2005.html). The patch is based on a driver by Lauri Leukkunen, with modifications by David Brownell, Phil Carmody, Imre Deak, Hiroshi DOYU, Ari Kauppi, Tony Lindgren, Jarkko Nikula, Eero Nurkkala and Roman Tereshonkov. Signed-off-by: Lauri Leukkunen [aaro.koskinen@nokia.com: patch description, rebasing & cleanup] Signed-off-by: Aaro Koskinen [ext-srikar.1.bhavanarayana@nokia.com: various fixes] Signed-off-by: Srikar Signed-off-by: Dmitry Torokhov --- include/linux/spi/tsc2005.h | 41 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 include/linux/spi/tsc2005.h (limited to 'include/linux') diff --git a/include/linux/spi/tsc2005.h b/include/linux/spi/tsc2005.h new file mode 100644 index 000000000000..d9b0c84220c7 --- /dev/null +++ b/include/linux/spi/tsc2005.h @@ -0,0 +1,41 @@ +/* + * This file is part of TSC2005 touchscreen driver + * + * Copyright (C) 2009-2010 Nokia Corporation + * + * Contact: Aaro Koskinen + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#ifndef _LINUX_SPI_TSC2005_H +#define _LINUX_SPI_TSC2005_H + +#include + +struct tsc2005_platform_data { + int ts_pressure_max; + int ts_pressure_fudge; + int ts_x_max; + int ts_x_fudge; + int ts_y_max; + int ts_y_fudge; + int ts_x_plate_ohm; + unsigned int esd_timeout_ms; + void (*set_reset)(bool enable); +}; + +#endif -- cgit v1.2.3 From cb293250c71fa85de3ef378d7383ddecf248c32d Mon Sep 17 00:00:00 2001 From: Borislav Petkov Date: Wed, 19 Jan 2011 18:22:11 +0100 Subject: PCI: Rename CPU PCI id define With increasing number of PCI function ids, add the PCI function id in the define name instead of its symbolic name in the BKDG for more clarity. Acked-by: Ingo Molnar Acked-by: Jesse Barnes Signed-off-by: Borislav Petkov --- include/linux/pci_ids.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h index 3adb06ebf841..5411e7b4d33d 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -517,7 +517,7 @@ #define PCI_DEVICE_ID_AMD_11H_NB_DRAM 0x1302 #define PCI_DEVICE_ID_AMD_11H_NB_MISC 0x1303 #define PCI_DEVICE_ID_AMD_11H_NB_LINK 0x1304 -#define PCI_DEVICE_ID_AMD_15H_NB_MISC 0x1603 +#define PCI_DEVICE_ID_AMD_15H_NB_F3 0x1603 #define PCI_DEVICE_ID_AMD_CNB17H_F3 0x1703 #define PCI_DEVICE_ID_AMD_LANCE 0x2000 #define PCI_DEVICE_ID_AMD_LANCE_HOME 0x2001 -- cgit v1.2.3 From 6b7e2d0991489559a1df4500d77f7b76c4607ed0 Mon Sep 17 00:00:00 2001 From: Xiao Guangrong Date: Wed, 12 Jan 2011 15:40:31 +0800 Subject: KVM: Add "exiting guest mode" state Currently we keep track of only two states: guest mode and host mode. This patch adds an "exiting guest mode" state that tells us that an IPI will happen soon, so unless we need to wait for the IPI, we can avoid it completely. Also 1: No need atomically to read/write ->mode in vcpu's thread 2: reorganize struct kvm_vcpu to make ->mode and ->requests in the same cache line explicitly Signed-off-by: Xiao Guangrong Signed-off-by: Avi Kivity --- include/linux/kvm_host.h | 22 +++++++++++++++++----- 1 file changed, 17 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index b5021db21858..b99eacd988ab 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -98,19 +98,26 @@ int kvm_setup_async_pf(struct kvm_vcpu *vcpu, gva_t gva, gfn_t gfn, int kvm_async_pf_wakeup_all(struct kvm_vcpu *vcpu); #endif +enum { + OUTSIDE_GUEST_MODE, + IN_GUEST_MODE, + EXITING_GUEST_MODE +}; + struct kvm_vcpu { struct kvm *kvm; #ifdef CONFIG_PREEMPT_NOTIFIERS struct preempt_notifier preempt_notifier; #endif + int cpu; int vcpu_id; - struct mutex mutex; - int cpu; - atomic_t guest_mode; - struct kvm_run *run; + int srcu_idx; + int mode; unsigned long requests; unsigned long guest_debug; - int srcu_idx; + + struct mutex mutex; + struct kvm_run *run; int fpu_active; int guest_fpu_loaded, guest_xcr0_loaded; @@ -140,6 +147,11 @@ struct kvm_vcpu { struct kvm_vcpu_arch arch; }; +static inline int kvm_vcpu_exiting_guest_mode(struct kvm_vcpu *vcpu) +{ + return cmpxchg(&vcpu->mode, IN_GUEST_MODE, EXITING_GUEST_MODE); +} + /* * Some of the bitops functions do not support too long bitmaps. * This number must be determined not to exceed such limits. -- cgit v1.2.3 From 3cba41307a2b1344ab8c1b9f55202d1e9d7bf81b Mon Sep 17 00:00:00 2001 From: Xiao Guangrong Date: Wed, 12 Jan 2011 15:41:22 +0800 Subject: KVM: make make_all_cpus_request() lockless Now, we have 'vcpu->mode' to judge whether need to send ipi to other cpus, this way is very exact, so checking request bit is needless, then we can drop the spinlock let it's collateral Signed-off-by: Xiao Guangrong Signed-off-by: Avi Kivity --- include/linux/kvm_host.h | 6 ------ 1 file changed, 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index b99eacd988ab..c8dee22b1945 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -224,7 +224,6 @@ struct kvm_memslots { struct kvm { spinlock_t mmu_lock; - raw_spinlock_t requests_lock; struct mutex slots_lock; struct mm_struct *mm; /* userspace tied to this vm */ struct kvm_memslots *memslots; @@ -731,11 +730,6 @@ static inline void kvm_make_request(int req, struct kvm_vcpu *vcpu) set_bit(req, &vcpu->requests); } -static inline bool kvm_make_check_request(int req, struct kvm_vcpu *vcpu) -{ - return test_and_set_bit(req, &vcpu->requests); -} - static inline bool kvm_check_request(int req, struct kvm_vcpu *vcpu) { if (test_bit(req, &vcpu->requests)) { -- cgit v1.2.3 From 0014bd990e69063b0fb78940b35439d7980ce3ee Mon Sep 17 00:00:00 2001 From: Huang Ying Date: Sun, 30 Jan 2011 11:15:47 +0800 Subject: mm: export __get_user_pages In most cases, get_user_pages and get_user_pages_fast should be used to pin user pages in memory. But sometimes, some special flags except FOLL_GET, FOLL_WRITE and FOLL_FORCE are needed, for example in following patch, KVM needs FOLL_HWPOISON. To support these users, __get_user_pages is exported directly. There are some symbol name conflicts in infiniband driver, fixed them too. Signed-off-by: Huang Ying CC: Andrew Morton CC: Michel Lespinasse CC: Roland Dreier CC: Ralph Campbell Signed-off-by: Marcelo Tosatti --- include/linux/mm.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index 679300c050f5..46150c66318e 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -965,6 +965,10 @@ static inline int handle_mm_fault(struct mm_struct *mm, extern int make_pages_present(unsigned long addr, unsigned long end); extern int access_process_vm(struct task_struct *tsk, unsigned long addr, void *buf, int len, int write); +int __get_user_pages(struct task_struct *tsk, struct mm_struct *mm, + unsigned long start, int len, unsigned int foll_flags, + struct page **pages, struct vm_area_struct **vmas, + int *nonblocking); int get_user_pages(struct task_struct *tsk, struct mm_struct *mm, unsigned long start, int nr_pages, int write, int force, struct page **pages, struct vm_area_struct **vmas); -- cgit v1.2.3 From 69ebb83e13e514222b0ae4f8bd813a17679ed876 Mon Sep 17 00:00:00 2001 From: Huang Ying Date: Sun, 30 Jan 2011 11:15:48 +0800 Subject: mm: make __get_user_pages return -EHWPOISON for HWPOISON page optionally Make __get_user_pages return -EHWPOISON for HWPOISON page only if FOLL_HWPOISON is specified. With this patch, the interested callers can distinguish HWPOISON pages from general FAULT pages, while other callers will still get -EFAULT for all these pages, so the user space interface need not to be changed. This feature is needed by KVM, where UCR MCE should be relayed to guest for HWPOISON page, while instruction emulation and MMIO will be tried for general FAULT page. The idea comes from Andrew Morton. Signed-off-by: Huang Ying Cc: Andrew Morton Signed-off-by: Marcelo Tosatti Signed-off-by: Avi Kivity --- include/linux/mm.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index 46150c66318e..a77c82c56e05 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1532,6 +1532,7 @@ struct page *follow_page(struct vm_area_struct *, unsigned long address, #define FOLL_FORCE 0x10 /* get_user_pages read/write w/o permission */ #define FOLL_MLOCK 0x40 /* mark page as mlocked */ #define FOLL_SPLIT 0x80 /* don't return transhuge pages, split them */ +#define FOLL_HWPOISON 0x100 /* check page is hwpoisoned */ typedef int (*pte_fn_t)(pte_t *pte, pgtable_t token, unsigned long addr, void *data); -- cgit v1.2.3 From f58c9df78c0360f0eb3852b9cc3a61e689bc2dd1 Mon Sep 17 00:00:00 2001 From: Huang Ying Date: Sun, 30 Jan 2011 11:15:49 +0800 Subject: mm: remove is_hwpoison_address Unused. Signed-off-by: Huang Ying Signed-off-by: Marcelo Tosatti --- include/linux/mm.h | 8 -------- 1 file changed, 8 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index a77c82c56e05..78219887308e 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1625,14 +1625,6 @@ extern int sysctl_memory_failure_recovery; extern void shake_page(struct page *p, int access); extern atomic_long_t mce_bad_pages; extern int soft_offline_page(struct page *page, int flags); -#ifdef CONFIG_MEMORY_FAILURE -int is_hwpoison_address(unsigned long addr); -#else -static inline int is_hwpoison_address(unsigned long addr) -{ - return 0; -} -#endif extern void dump_page(struct page *page); -- cgit v1.2.3 From 34bb10b79de7df118de832f6832efb630e646577 Mon Sep 17 00:00:00 2001 From: Rik van Riel Date: Tue, 1 Feb 2011 09:52:41 -0500 Subject: KVM: keep track of which task is running a KVM vcpu Keep track of which task is running a KVM vcpu. This helps us figure out later what task to wake up if we want to boost a vcpu that got preempted. Unfortunately there are no guarantees that the same task always keeps the same vcpu, so we can only track the task across a single "run" of the vcpu. Signed-off-by: Rik van Riel Signed-off-by: Avi Kivity --- include/linux/kvm_host.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index c8dee22b1945..4721b11b922a 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -122,6 +122,7 @@ struct kvm_vcpu { int fpu_active; int guest_fpu_loaded, guest_xcr0_loaded; wait_queue_head_t wq; + struct pid *pid; int sigset_active; sigset_t sigset; struct kvm_vcpu_stat stat; -- cgit v1.2.3 From 217ece6129f2d3b4fdd18d9e79be9e43d8d14a42 Mon Sep 17 00:00:00 2001 From: Rik van Riel Date: Tue, 1 Feb 2011 09:53:28 -0500 Subject: KVM: use yield_to instead of sleep in kvm_vcpu_on_spin Instead of sleeping in kvm_vcpu_on_spin, which can cause gigantic slowdowns of certain workloads, we instead use yield_to to get another VCPU in the same KVM guest to run sooner. This seems to give a 10-15% speedup in certain workloads. Signed-off-by: Rik van Riel Signed-off-by: Marcelo Tosatti Signed-off-by: Avi Kivity --- include/linux/kvm_host.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 4721b11b922a..3751ea0d1f92 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -235,6 +235,7 @@ struct kvm { #endif struct kvm_vcpu *vcpus[KVM_MAX_VCPUS]; atomic_t online_vcpus; + int last_boosted_vcpu; struct list_head vm_list; struct mutex lock; struct kvm_io_bus *buses[KVM_NR_BUSES]; -- cgit v1.2.3 From f86368493ec038218e8663cc1b6e5393cd8e008a Mon Sep 17 00:00:00 2001 From: Avi Kivity Date: Thu, 3 Feb 2011 15:07:07 +0200 Subject: KVM: Fix race between nmi injection and enabling nmi window The interrupt injection logic looks something like if an nmi is pending, and nmi injection allowed inject nmi if an nmi is pending request exit on nmi window the problem is that "nmi is pending" can be set asynchronously by the PIT; if it happens to fire between the two if statements, we will request an nmi window even though nmi injection is allowed. On SVM, this has disasterous results, since it causes eflags.TF to be set in random guest code. The fix is simple; make nmi_pending synchronous using the standard vcpu->requests mechanism; this ensures the code above is completely synchronous wrt nmi_pending. Signed-off-by: Avi Kivity --- include/linux/kvm_host.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 3751ea0d1f92..ab428552af8e 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -43,6 +43,7 @@ #define KVM_REQ_DEACTIVATE_FPU 10 #define KVM_REQ_EVENT 11 #define KVM_REQ_APF_HALT 12 +#define KVM_REQ_NMI 13 #define KVM_USERSPACE_IRQ_SOURCE_ID 0 -- cgit v1.2.3 From a8de240a9074b72b156d9e6d53f00076e6cd5f03 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 15 Mar 2011 19:56:30 -0400 Subject: SUNRPC: Convert struct rpc_xprt to use atomic_t counters Signed-off-by: Trond Myklebust --- include/linux/sunrpc/xprt.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/sunrpc/xprt.h b/include/linux/sunrpc/xprt.h index bef0f535f746..a0f998c07c65 100644 --- a/include/linux/sunrpc/xprt.h +++ b/include/linux/sunrpc/xprt.h @@ -12,7 +12,6 @@ #include #include #include -#include #include #include #include @@ -146,7 +145,7 @@ enum xprt_transports { }; struct rpc_xprt { - struct kref kref; /* Reference count */ + atomic_t count; /* Reference count */ struct rpc_xprt_ops * ops; /* transport methods */ const struct rpc_timeout *timeout; /* timeout parms */ -- cgit v1.2.3 From ab1efd271704416c9e6e9cb4e5f58e7e4c4260e6 Mon Sep 17 00:00:00 2001 From: Ulf Hansson Date: Wed, 9 Mar 2011 09:11:02 +0100 Subject: mmc: core: export function mmc_do_release_host() When using mmc_try_claim_host the corresponding release function is mmc_do_release_host, which then also must be exported. Reviewed-by: Jonas Aberg Reviewed-by: Sebastian Rasmussen Signed-off-by: Ulf Hansson Signed-off-by: Linus Walleij Signed-off-by: Chris Ball --- include/linux/mmc/core.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/mmc/core.h b/include/linux/mmc/core.h index 64e013f1cfb8..07f27af4dba5 100644 --- a/include/linux/mmc/core.h +++ b/include/linux/mmc/core.h @@ -160,6 +160,7 @@ extern unsigned int mmc_align_data_size(struct mmc_card *, unsigned int); extern int __mmc_claim_host(struct mmc_host *host, atomic_t *abort); extern void mmc_release_host(struct mmc_host *host); +extern void mmc_do_release_host(struct mmc_host *host); extern int mmc_try_claim_host(struct mmc_host *host); /** -- cgit v1.2.3 From fc3d7720541d4b70cbae25ac121d7e6343125090 Mon Sep 17 00:00:00 2001 From: Jaehoon Chung Date: Fri, 25 Feb 2011 11:08:15 +0900 Subject: mmc: dw_mmc: add quirks for unreliable card detect, and capabilities This patch adds quirks and capabilities to platdata. Some cards don't use the CDn pin; in that case, we assume the card's inserted. Some boards need other capabilities. So, we add capabilities in the board's platdata. Signed-off-by: Jaehoon Chung Signed-off-by: Kyungmin Park Acked-by: Will Newton Signed-off-by: Chris Ball --- include/linux/mmc/dw_mmc.h | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mmc/dw_mmc.h b/include/linux/mmc/dw_mmc.h index 3f22c201ee3a..f08163198877 100644 --- a/include/linux/mmc/dw_mmc.h +++ b/include/linux/mmc/dw_mmc.h @@ -166,11 +166,13 @@ struct dw_mci_dma_ops { /* IP Quirks/flags. */ /* DTO fix for command transmission with IDMAC configured */ -#define DW_MCI_QUIRK_IDMAC_DTO BIT(0) +#define DW_MCI_QUIRK_IDMAC_DTO BIT(0) /* delay needed between retries on some 2.11a implementations */ -#define DW_MCI_QUIRK_RETRY_DELAY BIT(1) +#define DW_MCI_QUIRK_RETRY_DELAY BIT(1) /* High Speed Capable - Supports HS cards (upto 50MHz) */ -#define DW_MCI_QUIRK_HIGHSPEED BIT(2) +#define DW_MCI_QUIRK_HIGHSPEED BIT(2) +/* Unreliable card detection */ +#define DW_MCI_QUIRK_BROKEN_CARD_DETECTION BIT(3) struct dma_pdata; @@ -190,6 +192,8 @@ struct dw_mci_board { u32 quirks; /* Workaround / Quirk flags */ unsigned int bus_hz; /* Bus speed */ + unsigned int caps; /* Capabilities */ + /* delay in mS before detecting cards after interrupt */ u32 detect_delay_ms; -- cgit v1.2.3 From e61cf1184d72e574460492fd6c6b6d8a3ace2089 Mon Sep 17 00:00:00 2001 From: Jaehoon Chung Date: Thu, 17 Mar 2011 20:32:33 +0900 Subject: mmc: dw_mmc: fix suspend/resume operation This patch is related to re-init processing on suspend/resume. When card is resuming, some register is reset. If card is removable, maybe controller should be rescan for card. But if assume card is non-removable, need to restore the old value at registers. We store the value of FIFOTH at probe time and then restore it in dw_mci_resume(). Signed-off-by: Jaehoon Chung Signed-off-by: Kyungmin Park Acked-by: Will Newton Signed-off-by: Chris Ball --- include/linux/mmc/dw_mmc.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/mmc/dw_mmc.h b/include/linux/mmc/dw_mmc.h index f08163198877..6c324de20de2 100644 --- a/include/linux/mmc/dw_mmc.h +++ b/include/linux/mmc/dw_mmc.h @@ -140,6 +140,7 @@ struct dw_mci { u32 bus_hz; u32 current_speed; u32 num_slots; + u32 fifoth_val; struct platform_device *pdev; struct dw_mci_board *pdata; struct dw_mci_slot *slot[MAX_MCI_SLOTS]; -- cgit v1.2.3 From c07946a3350244d7c3d9bc1032325e04dd11575b Mon Sep 17 00:00:00 2001 From: Jaehoon Chung Date: Fri, 25 Feb 2011 11:08:14 +0900 Subject: mmc: dw_mmc: support mmc power control with regulator This patch adds support for power regulators. Signed-off-by: Jaehoon Chung Signed-off-by: kyungmin Park Acked-by: Will Newton Signed-off-by: Chris Ball --- include/linux/mmc/dw_mmc.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mmc/dw_mmc.h b/include/linux/mmc/dw_mmc.h index 6c324de20de2..c0207a770476 100644 --- a/include/linux/mmc/dw_mmc.h +++ b/include/linux/mmc/dw_mmc.h @@ -152,6 +152,8 @@ struct dw_mci { /* Workaround flags */ u32 quirks; + + struct regulator *vmmc; /* Power regulator */ }; /* DMA ops for Internal/External DMAC interface */ -- cgit v1.2.3 From ef2b4b95a63a1d23958dcb99eb2c6898eddc87d0 Mon Sep 17 00:00:00 2001 From: Andrea Arcangeli Date: Fri, 18 Mar 2011 00:16:35 +0100 Subject: mm: PageBuddy and mapcount robustness Change the _mapcount value indicating PageBuddy from -2 to -128 for more robusteness against page_mapcount() undeflows. Use reset_page_mapcount instead of __ClearPageBuddy in bad_page to ignore the previous retval of PageBuddy(). Signed-off-by: Andrea Arcangeli Reported-by: Hugh Dickins Signed-off-by: Linus Torvalds --- include/linux/mm.h | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index 679300c050f5..ff83798e1c27 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -402,16 +402,23 @@ static inline void init_page_count(struct page *page) /* * PageBuddy() indicate that the page is free and in the buddy system * (see mm/page_alloc.c). + * + * PAGE_BUDDY_MAPCOUNT_VALUE must be <= -2 but better not too close to + * -2 so that an underflow of the page_mapcount() won't be mistaken + * for a genuine PAGE_BUDDY_MAPCOUNT_VALUE. -128 can be created very + * efficiently by most CPU architectures. */ +#define PAGE_BUDDY_MAPCOUNT_VALUE (-128) + static inline int PageBuddy(struct page *page) { - return atomic_read(&page->_mapcount) == -2; + return atomic_read(&page->_mapcount) == PAGE_BUDDY_MAPCOUNT_VALUE; } static inline void __SetPageBuddy(struct page *page) { VM_BUG_ON(atomic_read(&page->_mapcount) != -1); - atomic_set(&page->_mapcount, -2); + atomic_set(&page->_mapcount, PAGE_BUDDY_MAPCOUNT_VALUE); } static inline void __ClearPageBuddy(struct page *page) -- cgit v1.2.3 From 474a00ee1306eb7e82329fdc28b6471a99facba1 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Thu, 17 Mar 2011 21:31:32 -0400 Subject: kill simple_set_mnt() not needed anymore, since all users (->get_sb() instances) are gone. Signed-off-by: Al Viro --- include/linux/fs.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index 92f7e04aea11..7061a8587ee3 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1839,7 +1839,6 @@ extern struct dentry *mount_pseudo(struct file_system_type *, char *, const struct super_operations *ops, const struct dentry_operations *dops, unsigned long); -extern void simple_set_mnt(struct vfsmount *mnt, struct super_block *sb); static inline void sb_mark_dirty(struct super_block *sb) { -- cgit v1.2.3 From 7cc90cc3ffe22a0d81b8d605b20a82ec7911012d Mon Sep 17 00:00:00 2001 From: Al Viro Date: Fri, 18 Mar 2011 09:04:20 -0400 Subject: don't pass 'mounting_here' flag to follow_down() it's always false now Signed-off-by: Al Viro --- include/linux/namei.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/namei.h b/include/linux/namei.h index 9c8603872c36..eba45ea10298 100644 --- a/include/linux/namei.h +++ b/include/linux/namei.h @@ -85,7 +85,7 @@ extern struct file *lookup_instantiate_filp(struct nameidata *nd, struct dentry extern struct dentry *lookup_one_len(const char *, struct dentry *, int); extern int follow_down_one(struct path *); -extern int follow_down(struct path *, bool); +extern int follow_down(struct path *); extern int follow_up(struct path *); extern struct dentry *lock_rename(struct dentry *, struct dentry *); -- cgit v1.2.3 From 1aed3e4204dd787d53b3cd6363eb63bb4900c38e Mon Sep 17 00:00:00 2001 From: Al Viro Date: Fri, 18 Mar 2011 09:09:02 -0400 Subject: lose 'mounting_here' argument in ->d_manage() it's always false... Signed-off-by: Al Viro --- include/linux/dcache.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/dcache.h b/include/linux/dcache.h index f958c19e3ca5..1a87760d6532 100644 --- a/include/linux/dcache.h +++ b/include/linux/dcache.h @@ -168,7 +168,7 @@ struct dentry_operations { void (*d_iput)(struct dentry *, struct inode *); char *(*d_dname)(struct dentry *, char *, int); struct vfsmount *(*d_automount)(struct path *); - int (*d_manage)(struct dentry *, bool, bool); + int (*d_manage)(struct dentry *, bool); } ____cacheline_aligned; /* -- cgit v1.2.3 From 46165a3d00db7526fb43a3dfe5c01a4aa7e236af Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Fri, 18 Mar 2011 10:41:17 +0100 Subject: spi/dw_spi: Fix missing header MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Currently, build on PPC dies with: In file included from drivers/spi/dw_spi_mmio.c:16: include/linux/spi/dw_spi.h:147: error: field ‘tx_sgl’ has incomplete type include/linux/spi/dw_spi.h:149: error: field ‘rx_sgl’ has incomplete type Add linux/scatterlist.h include to dw_spi.h, because we need to know the contents of the structure. Signed-off-by: Jiri Slaby Signed-off-by: Grant Likely --- include/linux/spi/dw_spi.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/spi/dw_spi.h b/include/linux/spi/dw_spi.h index 6cd10f6ad472..fb0bce564844 100644 --- a/include/linux/spi/dw_spi.h +++ b/include/linux/spi/dw_spi.h @@ -2,6 +2,7 @@ #define DW_SPI_HEADER_H #include +#include /* Bit fields in CTRLR0 */ #define SPI_DFS_OFFSET 0 -- cgit v1.2.3 From 568a60eda2e90a11bb3d7f8ef3f6800e9b60d4e5 Mon Sep 17 00:00:00 2001 From: Grant Likely Date: Mon, 28 Feb 2011 12:47:12 -0700 Subject: spi/dw_spi: move dw_spi.h into drivers/spi include/linux/dw_spi.h only includes driver internal data. It doesn't expose a platform_data configuration structure or similar (at least nothing in-tree). This patch moves the header into drivers/spi so that the scope is limited to only the dw_spi_*.c driver files Signed-off-by: Grant Likely Cc: Feng Tang Cc: spi-devel-general@lists.sourceforge.net --- include/linux/spi/dw_spi.h | 234 --------------------------------------------- 1 file changed, 234 deletions(-) delete mode 100644 include/linux/spi/dw_spi.h (limited to 'include/linux') diff --git a/include/linux/spi/dw_spi.h b/include/linux/spi/dw_spi.h deleted file mode 100644 index fb0bce564844..000000000000 --- a/include/linux/spi/dw_spi.h +++ /dev/null @@ -1,234 +0,0 @@ -#ifndef DW_SPI_HEADER_H -#define DW_SPI_HEADER_H - -#include -#include - -/* Bit fields in CTRLR0 */ -#define SPI_DFS_OFFSET 0 - -#define SPI_FRF_OFFSET 4 -#define SPI_FRF_SPI 0x0 -#define SPI_FRF_SSP 0x1 -#define SPI_FRF_MICROWIRE 0x2 -#define SPI_FRF_RESV 0x3 - -#define SPI_MODE_OFFSET 6 -#define SPI_SCPH_OFFSET 6 -#define SPI_SCOL_OFFSET 7 - -#define SPI_TMOD_OFFSET 8 -#define SPI_TMOD_MASK (0x3 << SPI_TMOD_OFFSET) -#define SPI_TMOD_TR 0x0 /* xmit & recv */ -#define SPI_TMOD_TO 0x1 /* xmit only */ -#define SPI_TMOD_RO 0x2 /* recv only */ -#define SPI_TMOD_EPROMREAD 0x3 /* eeprom read mode */ - -#define SPI_SLVOE_OFFSET 10 -#define SPI_SRL_OFFSET 11 -#define SPI_CFS_OFFSET 12 - -/* Bit fields in SR, 7 bits */ -#define SR_MASK 0x7f /* cover 7 bits */ -#define SR_BUSY (1 << 0) -#define SR_TF_NOT_FULL (1 << 1) -#define SR_TF_EMPT (1 << 2) -#define SR_RF_NOT_EMPT (1 << 3) -#define SR_RF_FULL (1 << 4) -#define SR_TX_ERR (1 << 5) -#define SR_DCOL (1 << 6) - -/* Bit fields in ISR, IMR, RISR, 7 bits */ -#define SPI_INT_TXEI (1 << 0) -#define SPI_INT_TXOI (1 << 1) -#define SPI_INT_RXUI (1 << 2) -#define SPI_INT_RXOI (1 << 3) -#define SPI_INT_RXFI (1 << 4) -#define SPI_INT_MSTI (1 << 5) - -/* TX RX interrupt level threshhold, max can be 256 */ -#define SPI_INT_THRESHOLD 32 - -enum dw_ssi_type { - SSI_MOTO_SPI = 0, - SSI_TI_SSP, - SSI_NS_MICROWIRE, -}; - -struct dw_spi_reg { - u32 ctrl0; - u32 ctrl1; - u32 ssienr; - u32 mwcr; - u32 ser; - u32 baudr; - u32 txfltr; - u32 rxfltr; - u32 txflr; - u32 rxflr; - u32 sr; - u32 imr; - u32 isr; - u32 risr; - u32 txoicr; - u32 rxoicr; - u32 rxuicr; - u32 msticr; - u32 icr; - u32 dmacr; - u32 dmatdlr; - u32 dmardlr; - u32 idr; - u32 version; - u32 dr; /* Currently oper as 32 bits, - though only low 16 bits matters */ -} __packed; - -struct dw_spi; -struct dw_spi_dma_ops { - int (*dma_init)(struct dw_spi *dws); - void (*dma_exit)(struct dw_spi *dws); - int (*dma_transfer)(struct dw_spi *dws, int cs_change); -}; - -struct dw_spi { - struct spi_master *master; - struct spi_device *cur_dev; - struct device *parent_dev; - enum dw_ssi_type type; - - void __iomem *regs; - unsigned long paddr; - u32 iolen; - int irq; - u32 fifo_len; /* depth of the FIFO buffer */ - u32 max_freq; /* max bus freq supported */ - - u16 bus_num; - u16 num_cs; /* supported slave numbers */ - - /* Driver message queue */ - struct workqueue_struct *workqueue; - struct work_struct pump_messages; - spinlock_t lock; - struct list_head queue; - int busy; - int run; - - /* Message Transfer pump */ - struct tasklet_struct pump_transfers; - - /* Current message transfer state info */ - struct spi_message *cur_msg; - struct spi_transfer *cur_transfer; - struct chip_data *cur_chip; - struct chip_data *prev_chip; - size_t len; - void *tx; - void *tx_end; - void *rx; - void *rx_end; - int dma_mapped; - dma_addr_t rx_dma; - dma_addr_t tx_dma; - size_t rx_map_len; - size_t tx_map_len; - u8 n_bytes; /* current is a 1/2 bytes op */ - u8 max_bits_per_word; /* maxim is 16b */ - u32 dma_width; - int cs_change; - int (*write)(struct dw_spi *dws); - int (*read)(struct dw_spi *dws); - irqreturn_t (*transfer_handler)(struct dw_spi *dws); - void (*cs_control)(u32 command); - - /* Dma info */ - int dma_inited; - struct dma_chan *txchan; - struct scatterlist tx_sgl; - struct dma_chan *rxchan; - struct scatterlist rx_sgl; - int dma_chan_done; - struct device *dma_dev; - dma_addr_t dma_addr; /* phy address of the Data register */ - struct dw_spi_dma_ops *dma_ops; - void *dma_priv; /* platform relate info */ - struct pci_dev *dmac; - - /* Bus interface info */ - void *priv; -#ifdef CONFIG_DEBUG_FS - struct dentry *debugfs; -#endif -}; - -#define dw_readl(dw, name) \ - __raw_readl(&(((struct dw_spi_reg *)dw->regs)->name)) -#define dw_writel(dw, name, val) \ - __raw_writel((val), &(((struct dw_spi_reg *)dw->regs)->name)) -#define dw_readw(dw, name) \ - __raw_readw(&(((struct dw_spi_reg *)dw->regs)->name)) -#define dw_writew(dw, name, val) \ - __raw_writew((val), &(((struct dw_spi_reg *)dw->regs)->name)) - -static inline void spi_enable_chip(struct dw_spi *dws, int enable) -{ - dw_writel(dws, ssienr, (enable ? 1 : 0)); -} - -static inline void spi_set_clk(struct dw_spi *dws, u16 div) -{ - dw_writel(dws, baudr, div); -} - -static inline void spi_chip_sel(struct dw_spi *dws, u16 cs) -{ - if (cs > dws->num_cs) - return; - - if (dws->cs_control) - dws->cs_control(1); - - dw_writel(dws, ser, 1 << cs); -} - -/* Disable IRQ bits */ -static inline void spi_mask_intr(struct dw_spi *dws, u32 mask) -{ - u32 new_mask; - - new_mask = dw_readl(dws, imr) & ~mask; - dw_writel(dws, imr, new_mask); -} - -/* Enable IRQ bits */ -static inline void spi_umask_intr(struct dw_spi *dws, u32 mask) -{ - u32 new_mask; - - new_mask = dw_readl(dws, imr) | mask; - dw_writel(dws, imr, new_mask); -} - -/* - * Each SPI slave device to work with dw_api controller should - * has such a structure claiming its working mode (PIO/DMA etc), - * which can be save in the "controller_data" member of the - * struct spi_device - */ -struct dw_spi_chip { - u8 poll_mode; /* 0 for contoller polling mode */ - u8 type; /* SPI/SSP/Micrwire */ - u8 enable_dma; - void (*cs_control)(u32 command); -}; - -extern int dw_spi_add_host(struct dw_spi *dws); -extern void dw_spi_remove_host(struct dw_spi *dws); -extern int dw_spi_suspend_host(struct dw_spi *dws); -extern int dw_spi_resume_host(struct dw_spi *dws); -extern void dw_spi_xfer_done(struct dw_spi *dws); - -/* platform related setup */ -extern int dw_spi_mid_init(struct dw_spi *dws); /* Intel MID platforms */ -#endif /* DW_SPI_HEADER_H */ -- cgit v1.2.3 From d57f078b193981d1b7d24193f3118c6b806db0ff Mon Sep 17 00:00:00 2001 From: David Howells Date: Fri, 18 Mar 2011 16:54:31 +0000 Subject: KGDB: Notify GDB of machine halt, reboot or power off Notify GDB of the machine halting, rebooting or powering off by sending it an exited command (remote protocol command 'W'). This is done by calling: void gdbstub_exit(int status) from the arch's machine_{halt,restart,power_off}() functions with an appropriate exit status to be reported to GDB. Signed-off-by: David Howells --- include/linux/kgdb.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/kgdb.h b/include/linux/kgdb.h index 092e4250a458..10ca03d0a250 100644 --- a/include/linux/kgdb.h +++ b/include/linux/kgdb.h @@ -297,6 +297,7 @@ extern int kgdb_handle_exception(int ex_vector, int signo, int err_code, struct pt_regs *regs); extern int kgdb_nmicallback(int cpu, void *regs); +extern void gdbstub_exit(int status); extern int kgdb_single_step; extern atomic_t kgdb_active; -- cgit v1.2.3 From 3a7da39d165e0c363c294feec119db1427032afd Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Thu, 17 Mar 2011 07:34:32 +0000 Subject: ethtool: Compat handling for struct ethtool_rxnfc This structure was accidentally defined such that its layout can differ between 32-bit and 64-bit processes. Add compat structure definitions and an ioctl wrapper function. Signed-off-by: Ben Hutchings Acked-by: Alexander Duyck Cc: stable@kernel.org [2.6.30+] Signed-off-by: David S. Miller --- include/linux/ethtool.h | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h index aac3e2eeb4fd..b297f288f6eb 100644 --- a/include/linux/ethtool.h +++ b/include/linux/ethtool.h @@ -13,6 +13,9 @@ #ifndef _LINUX_ETHTOOL_H #define _LINUX_ETHTOOL_H +#ifdef __KERNEL__ +#include +#endif #include #include @@ -450,6 +453,37 @@ struct ethtool_rxnfc { __u32 rule_locs[0]; }; +#ifdef __KERNEL__ +#ifdef CONFIG_COMPAT + +struct compat_ethtool_rx_flow_spec { + u32 flow_type; + union { + struct ethtool_tcpip4_spec tcp_ip4_spec; + struct ethtool_tcpip4_spec udp_ip4_spec; + struct ethtool_tcpip4_spec sctp_ip4_spec; + struct ethtool_ah_espip4_spec ah_ip4_spec; + struct ethtool_ah_espip4_spec esp_ip4_spec; + struct ethtool_usrip4_spec usr_ip4_spec; + struct ethhdr ether_spec; + u8 hdata[72]; + } h_u, m_u; + compat_u64 ring_cookie; + u32 location; +}; + +struct compat_ethtool_rxnfc { + u32 cmd; + u32 flow_type; + compat_u64 data; + struct compat_ethtool_rx_flow_spec fs; + u32 rule_cnt; + u32 rule_locs[0]; +}; + +#endif /* CONFIG_COMPAT */ +#endif /* __KERNEL__ */ + /** * struct ethtool_rxfh_indir - command to get or set RX flow hash indirection * @cmd: Specific command number - %ETHTOOL_GRXFHINDIR or %ETHTOOL_SRXFHINDIR -- cgit v1.2.3 From b51bdad63046d1d5a4807630cc8c02845cf67893 Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Fri, 18 Mar 2011 08:50:37 +0000 Subject: headers: use __aligned_xx types for userspace Now that we finally have __aligned_xx exported to userspace, convert the headers that get exported over to the proper type. Signed-off-by: Mike Frysinger Signed-off-by: David S. Miller --- include/linux/if_ppp.h | 16 ++++++++-------- include/linux/netfilter/nfnetlink_log.h | 4 ++-- include/linux/netfilter/nfnetlink_queue.h | 4 ++-- include/linux/netfilter/xt_connbytes.h | 4 ++-- include/linux/netfilter/xt_quota.h | 2 +- 5 files changed, 15 insertions(+), 15 deletions(-) (limited to 'include/linux') diff --git a/include/linux/if_ppp.h b/include/linux/if_ppp.h index fcef103aa3f6..c9ad38322576 100644 --- a/include/linux/if_ppp.h +++ b/include/linux/if_ppp.h @@ -114,14 +114,14 @@ struct pppol2tp_ioc_stats { __u16 tunnel_id; /* redundant */ __u16 session_id; /* if zero, get tunnel stats */ __u32 using_ipsec:1; /* valid only for session_id == 0 */ - aligned_u64 tx_packets; - aligned_u64 tx_bytes; - aligned_u64 tx_errors; - aligned_u64 rx_packets; - aligned_u64 rx_bytes; - aligned_u64 rx_seq_discards; - aligned_u64 rx_oos_packets; - aligned_u64 rx_errors; + __aligned_u64 tx_packets; + __aligned_u64 tx_bytes; + __aligned_u64 tx_errors; + __aligned_u64 rx_packets; + __aligned_u64 rx_bytes; + __aligned_u64 rx_seq_discards; + __aligned_u64 rx_oos_packets; + __aligned_u64 rx_errors; }; #define ifr__name b.ifr_ifrn.ifrn_name diff --git a/include/linux/netfilter/nfnetlink_log.h b/include/linux/netfilter/nfnetlink_log.h index ea9b8d380527..90c2c9575bac 100644 --- a/include/linux/netfilter/nfnetlink_log.h +++ b/include/linux/netfilter/nfnetlink_log.h @@ -28,8 +28,8 @@ struct nfulnl_msg_packet_hw { }; struct nfulnl_msg_packet_timestamp { - aligned_be64 sec; - aligned_be64 usec; + __aligned_be64 sec; + __aligned_be64 usec; }; enum nfulnl_attr_type { diff --git a/include/linux/netfilter/nfnetlink_queue.h b/include/linux/netfilter/nfnetlink_queue.h index 2455fe5f4e01..af94e0014ebd 100644 --- a/include/linux/netfilter/nfnetlink_queue.h +++ b/include/linux/netfilter/nfnetlink_queue.h @@ -25,8 +25,8 @@ struct nfqnl_msg_packet_hw { }; struct nfqnl_msg_packet_timestamp { - aligned_be64 sec; - aligned_be64 usec; + __aligned_be64 sec; + __aligned_be64 usec; }; enum nfqnl_attr_type { diff --git a/include/linux/netfilter/xt_connbytes.h b/include/linux/netfilter/xt_connbytes.h index 92fcbb0d193e..f1d6c15bd9e3 100644 --- a/include/linux/netfilter/xt_connbytes.h +++ b/include/linux/netfilter/xt_connbytes.h @@ -17,8 +17,8 @@ enum xt_connbytes_direction { struct xt_connbytes_info { struct { - aligned_u64 from; /* count to be matched */ - aligned_u64 to; /* count to be matched */ + __aligned_u64 from; /* count to be matched */ + __aligned_u64 to; /* count to be matched */ } count; __u8 what; /* ipt_connbytes_what */ __u8 direction; /* ipt_connbytes_direction */ diff --git a/include/linux/netfilter/xt_quota.h b/include/linux/netfilter/xt_quota.h index ca6e03e47a17..9314723f39ca 100644 --- a/include/linux/netfilter/xt_quota.h +++ b/include/linux/netfilter/xt_quota.h @@ -13,7 +13,7 @@ struct xt_quota_priv; struct xt_quota_info { __u32 flags; __u32 pad; - aligned_u64 quota; + __aligned_u64 quota; /* Used internally by the kernel */ struct xt_quota_priv *master; -- cgit v1.2.3 From d735b34db30b7891ff76b552d18ecb0ce04a2bc2 Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Sun, 20 Mar 2011 14:50:52 +0100 Subject: i2c: make i2c_get_adapter prototype clearer Rename the parameter of i2c_get_adapter() to "nr", to make it clear we are passing an adapter number and not an adapter ID (which have gone away by now.) Signed-off-by: Jean Delvare --- include/linux/i2c.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/i2c.h b/include/linux/i2c.h index 06a8d9c7de98..c1e70afe2502 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -447,7 +447,7 @@ extern void i2c_release_client(struct i2c_client *client); extern void i2c_clients_command(struct i2c_adapter *adap, unsigned int cmd, void *arg); -extern struct i2c_adapter *i2c_get_adapter(int id); +extern struct i2c_adapter *i2c_get_adapter(int nr); extern void i2c_put_adapter(struct i2c_adapter *adap); -- cgit v1.2.3 From 0c31f8e5720e1191b4cf46a9b5374fe6b857c53c Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Sun, 20 Mar 2011 14:50:52 +0100 Subject: i2c: Get rid of The last remaining ID in is no longer used anywhere, so we can finally get rid of it. Signed-off-by: Jean Delvare --- include/linux/i2c-id.h | 37 ------------------------------------- include/linux/i2c.h | 1 - 2 files changed, 38 deletions(-) delete mode 100644 include/linux/i2c-id.h (limited to 'include/linux') diff --git a/include/linux/i2c-id.h b/include/linux/i2c-id.h deleted file mode 100644 index 4bef5c557160..000000000000 --- a/include/linux/i2c-id.h +++ /dev/null @@ -1,37 +0,0 @@ -/* ------------------------------------------------------------------------- */ -/* */ -/* i2c-id.h - identifier values for i2c drivers and adapters */ -/* */ -/* ------------------------------------------------------------------------- */ -/* Copyright (C) 1995-1999 Simon G. Vogl - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ -/* ------------------------------------------------------------------------- */ - -#ifndef LINUX_I2C_ID_H -#define LINUX_I2C_ID_H - -/* Please note that I2C driver IDs are optional. They are only needed if a - legacy chip driver needs to identify a bus or a bus driver needs to - identify a legacy client. If you don't need them, just don't set them. */ - -/* - * ---- Adapter types ---------------------------------------------------- - */ - -/* --- Bit algorithm adapters */ -#define I2C_HW_B_CX2388x 0x01001b /* connexant 2388x based tv cards */ - -#endif /* LINUX_I2C_ID_H */ diff --git a/include/linux/i2c.h b/include/linux/i2c.h index c1e70afe2502..3963a5567472 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -29,7 +29,6 @@ #include #ifdef __KERNEL__ #include -#include #include #include /* for struct device */ #include /* for completion */ -- cgit v1.2.3 From 7ae31482a8376fb0df3a0c5ff0677a92820c06b7 Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Sun, 20 Mar 2011 14:50:52 +0100 Subject: i2c: Export i2c_for_each_dev Introduce i2c_for_each_dev(), an i2c device iterator with proper locking for use by i2c-dev. This is needed so that we can get rid of the attach_adapter and detach_adapter legacy callback functions. Signed-off-by: Jean Delvare --- include/linux/i2c.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/i2c.h b/include/linux/i2c.h index 3963a5567472..4df12c7e69d7 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -395,6 +395,8 @@ i2c_parent_is_i2c_adapter(const struct i2c_adapter *adapter) return NULL; } +int i2c_for_each_dev(void *data, int (*fn)(struct device *, void *)); + /* Adapter locking functions, exported for shared pin cases */ void i2c_lock_adapter(struct i2c_adapter *); void i2c_unlock_adapter(struct i2c_adapter *); -- cgit v1.2.3 From fe6fc25857d293546bd400432cdb77866c797c9b Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Sun, 20 Mar 2011 14:50:53 +0100 Subject: i2c: Deprecate i2c_driver.attach_adapter and .detach_adapter The last legitimate user of i2c_driver.attach_adapter and .detach_adapter is gone, so we can finally deprecate these callbacks. The last few drivers which still use these will have to be updated to make use of standard I2C device instantiation ways instead. Signed-off-by: Jean Delvare --- include/linux/i2c.h | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/i2c.h b/include/linux/i2c.h index 4df12c7e69d7..cd2f75b742ec 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -104,8 +104,8 @@ extern s32 i2c_smbus_write_i2c_block_data(const struct i2c_client *client, /** * struct i2c_driver - represent an I2C device driver * @class: What kind of i2c device we instantiate (for detect) - * @attach_adapter: Callback for bus addition (for legacy drivers) - * @detach_adapter: Callback for bus removal (for legacy drivers) + * @attach_adapter: Callback for bus addition (deprecated) + * @detach_adapter: Callback for bus removal (deprecated) * @probe: Callback for device binding * @remove: Callback for device unbinding * @shutdown: Callback for device shutdown @@ -143,11 +143,11 @@ struct i2c_driver { unsigned int class; /* Notifies the driver that a new bus has appeared or is about to be - * removed. You should avoid using this if you can, it will probably - * be removed in a near future. + * removed. You should avoid using this, it will be removed in a + * near future. */ - int (*attach_adapter)(struct i2c_adapter *); - int (*detach_adapter)(struct i2c_adapter *); + int (*attach_adapter)(struct i2c_adapter *) __deprecated; + int (*detach_adapter)(struct i2c_adapter *) __deprecated; /* Standard driver model interfaces */ int (*probe)(struct i2c_client *, const struct i2c_device_id *); -- cgit v1.2.3 From c185a9420bd1c645252249018e6887a968d3e1de Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Sun, 20 Mar 2011 14:50:53 +0100 Subject: i2c: Drop i2c_adapter.id There is no user left of i2c_adapter.id, so we can get rid of it. Finally! :) Signed-off-by: Jean Delvare --- include/linux/i2c.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/i2c.h b/include/linux/i2c.h index cd2f75b742ec..f1e3ff5880a9 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -353,7 +353,6 @@ struct i2c_algorithm { */ struct i2c_adapter { struct module *owner; - unsigned int id __deprecated; unsigned int class; /* classes to allow probing for */ const struct i2c_algorithm *algo; /* the algorithm to access the bus */ void *algo_data; -- cgit v1.2.3 From 5e0c1eb7e6b61998c7ecd39b7f69a15773d894d4 Mon Sep 17 00:00:00 2001 From: Jozsef Kadlecsik Date: Sun, 20 Mar 2011 15:33:26 +0100 Subject: netfilter: ipset: fix address ranges at hash:*port* types The hash:*port* types with IPv4 silently ignored when address ranges with non TCP/UDP were added/deleted from the set and used the first address from the range only. Signed-off-by: Jozsef Kadlecsik Signed-off-by: Patrick McHardy --- include/linux/netfilter/ipset/ip_set_getport.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/linux') diff --git a/include/linux/netfilter/ipset/ip_set_getport.h b/include/linux/netfilter/ipset/ip_set_getport.h index 3882a81a3b3c..5aebd170f899 100644 --- a/include/linux/netfilter/ipset/ip_set_getport.h +++ b/include/linux/netfilter/ipset/ip_set_getport.h @@ -18,4 +18,14 @@ static inline bool ip_set_get_ip6_port(const struct sk_buff *skb, bool src, extern bool ip_set_get_ip_port(const struct sk_buff *skb, u8 pf, bool src, __be16 *port); +static inline bool ip_set_proto_with_ports(u8 proto) +{ + switch (proto) { + case IPPROTO_TCP: + case IPPROTO_UDP: + return true; + } + return false; +} + #endif /*_IP_SET_GETPORT_H*/ -- cgit v1.2.3 From c2cc7028e41c76e44b6e247c4b495c7523b23c87 Mon Sep 17 00:00:00 2001 From: Amir Goldstein Date: Sun, 20 Mar 2011 20:08:48 -0400 Subject: jbd2: add the b_cow_tid field to journal_head struct The b_cow_tid field will be used by the ext4 snapshots code to store the transaction id when the buffer was last cowed. Merging this patch to mainline will allow users to test ext4 snapshots as a standalone module, without the need to patch and install a development kernel. On 64bit machines this field uses fills in a padding "hole" and does not increase the size of the struct. On a 32bit machine this patch increases the size of the struct from 60 to 64 bytes. Signed-off-by: Amir Goldstein Signed-off-by: "Theodore Ts'o" --- include/linux/journal-head.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/journal-head.h b/include/linux/journal-head.h index 525aac3c97df..44e95d0a721f 100644 --- a/include/linux/journal-head.h +++ b/include/linux/journal-head.h @@ -40,6 +40,13 @@ struct journal_head { */ unsigned b_modified; + /* + * This feild tracks the last transaction id in which this buffer + * has been cowed + * [jbd_lock_bh_state()] + */ + unsigned b_cow_tid; + /* * Copy of the buffer data frozen for writing to the log. * [jbd_lock_bh_state()] -- cgit v1.2.3 From 93737456d68ddcb86232f669b83da673dd12e351 Mon Sep 17 00:00:00 2001 From: Amir Goldstein Date: Sun, 20 Mar 2011 21:13:43 -0400 Subject: jbd2: add COW fields to struct jbd2_journal_handle Add fields needed for the copy-on-write ext4 development work. The h_cowing flag is used by ext4 snapshots code to mark the task in COWING state. The h_XXX_credits fields are used to track buffer credits usage (accounted by COW and non-COW operations). The h_cow_XXX fields are used as per task debugging counters. Merging this commit into mainline will allow users to test ext4 snapshots as a standalone module, without the need to patch and install a development kernel. Signed-off-by: Amir Goldstein Signed-off-by: "Theodore Ts'o" --- include/linux/jbd2.h | 28 +++++++++++++++++++++++++--- 1 file changed, 25 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h index 27e79c27ba08..a32dcaec04e1 100644 --- a/include/linux/jbd2.h +++ b/include/linux/jbd2.h @@ -432,13 +432,35 @@ struct jbd2_journal_handle int h_err; /* Flags [no locking] */ - unsigned int h_sync: 1; /* sync-on-close */ - unsigned int h_jdata: 1; /* force data journaling */ - unsigned int h_aborted: 1; /* fatal error on handle */ + unsigned int h_sync:1; /* sync-on-close */ + unsigned int h_jdata:1; /* force data journaling */ + unsigned int h_aborted:1; /* fatal error on handle */ + unsigned int h_cowing:1; /* COWing block to snapshot */ + + /* Number of buffers requested by user: + * (before adding the COW credits factor) */ + unsigned int h_base_credits:14; + + /* Number of buffers the user is allowed to dirty: + * (counts only buffers dirtied when !h_cowing) */ + unsigned int h_user_credits:14; + #ifdef CONFIG_DEBUG_LOCK_ALLOC struct lockdep_map h_lockdep_map; #endif + +#ifdef CONFIG_JBD2_DEBUG + /* COW debugging counters: */ + unsigned int h_cow_moved; /* blocks moved to snapshot */ + unsigned int h_cow_copied; /* blocks copied to snapshot */ + unsigned int h_cow_ok_jh; /* blocks already COWed during current + transaction */ + unsigned int h_cow_ok_bitmap; /* blocks not set in COW bitmap */ + unsigned int h_cow_ok_mapped;/* blocks already mapped in snapshot */ + unsigned int h_cow_bitmaps; /* COW bitmaps created */ + unsigned int h_cow_excluded; /* blocks set in exclude bitmap */ +#endif }; -- cgit v1.2.3 From b7ed78f56575074f29ec99d8984f347f6c99c914 Mon Sep 17 00:00:00 2001 From: Sage Weil Date: Thu, 10 Mar 2011 11:31:30 -0800 Subject: introduce sys_syncfs to sync a single file system It is frequently useful to sync a single file system, instead of all mounted file systems via sync(2): - On machines with many mounts, it is not at all uncommon for some of them to hang (e.g. unresponsive NFS server). sync(2) will get stuck on those and may never get to the one you do care about (e.g., /). - Some applications write lots of data to the file system and then want to make sure it is flushed to disk. Calling fsync(2) on each file introduces unnecessary ordering constraints that result in a large amount of sub-optimal writeback/flush/commit behavior by the file system. There are currently two ways (that I know of) to sync a single super_block: - BLKFLSBUF ioctl on the block device: That also invalidates the bdev mapping, which isn't usually desirable, and doesn't work for non-block file systems. - 'mount -o remount,rw' will call sync_filesystem as an artifact of the current implemention. Relying on this little-known side effect for something like data safety sounds foolish. Both of these approaches require root privileges, which some applications do not have (nor should they need?) given that sync(2) is an unprivileged operation. This patch introduces a new system call syncfs(2) that takes an fd and syncs only the file system it references. Maybe someday we can $ sync /some/path and not get sync: ignoring all arguments The syscall is motivated by comments by Al and Christoph at the last LSF. syncfs(2) seems like an appropriate name given statfs(2). A similar ioctl was also proposed a while back, see http://marc.info/?l=linux-fsdevel&m=127970513829285&w=2 Signed-off-by: Sage Weil Signed-off-by: Al Viro --- include/linux/syscalls.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 1f5c18e6f4f1..83ecc1749ef6 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -825,6 +825,7 @@ asmlinkage long sys_fanotify_init(unsigned int flags, unsigned int event_f_flags asmlinkage long sys_fanotify_mark(int fanotify_fd, unsigned int flags, u64 mask, int fd, const char __user *pathname); +asmlinkage long sys_syncfs(int fd); int kernel_execve(const char *filename, const char *const argv[], const char *const envp[]); -- cgit v1.2.3 From b459396ee9398bdf61e3118ca730394f58e90c9c Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Wed, 23 Feb 2011 12:38:16 +0100 Subject: ARM: pxa2xx: reorganize I2C files This patch moves the platform data definition from arch/arm/plat-pxa/include/plat/i2c.h to include/linux/i2c/pxa-i2c.h so it can be accessed from x86 the same way as on ARM. This change should make no functional change to the PXA code. The move is verified by building the following defconfigs: cm_x2xx_defconfig corgi_defconfig em_x270_defconfig ezx_defconfig imote2_defconfig pxa3xx_defconfig spitz_defconfig zeus_defconfig raumfeld_defconfig magician_defconfig mmp2_defconfig pxa168_defconfig pxa910_defconfig Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Dirk Brandewie Signed-off-by: Ben Dooks --- include/linux/i2c/pxa-i2c.h | 82 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 82 insertions(+) create mode 100644 include/linux/i2c/pxa-i2c.h (limited to 'include/linux') diff --git a/include/linux/i2c/pxa-i2c.h b/include/linux/i2c/pxa-i2c.h new file mode 100644 index 000000000000..1a9f65e6ec0f --- /dev/null +++ b/include/linux/i2c/pxa-i2c.h @@ -0,0 +1,82 @@ +/* + * i2c_pxa.h + * + * Copyright (C) 2002 Intrinsyc Software Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ +#ifndef _I2C_PXA_H_ +#define _I2C_PXA_H_ + +#if 0 +#define DEF_TIMEOUT 3 +#else +/* need a longer timeout if we're dealing with the fact we may well be + * looking at a multi-master environment +*/ +#define DEF_TIMEOUT 32 +#endif + +#define BUS_ERROR (-EREMOTEIO) +#define XFER_NAKED (-ECONNREFUSED) +#define I2C_RETRY (-2000) /* an error has occurred retry transmit */ + +/* ICR initialize bit values +* +* 15. FM 0 (100 Khz operation) +* 14. UR 0 (No unit reset) +* 13. SADIE 0 (Disables the unit from interrupting on slave addresses +* matching its slave address) +* 12. ALDIE 0 (Disables the unit from interrupt when it loses arbitration +* in master mode) +* 11. SSDIE 0 (Disables interrupts from a slave stop detected, in slave mode) +* 10. BEIE 1 (Enable interrupts from detected bus errors, no ACK sent) +* 9. IRFIE 1 (Enable interrupts from full buffer received) +* 8. ITEIE 1 (Enables the I2C unit to interrupt when transmit buffer empty) +* 7. GCD 1 (Disables i2c unit response to general call messages as a slave) +* 6. IUE 0 (Disable unit until we change settings) +* 5. SCLE 1 (Enables the i2c clock output for master mode (drives SCL) +* 4. MA 0 (Only send stop with the ICR stop bit) +* 3. TB 0 (We are not transmitting a byte initially) +* 2. ACKNAK 0 (Send an ACK after the unit receives a byte) +* 1. STOP 0 (Do not send a STOP) +* 0. START 0 (Do not send a START) +* +*/ +#define I2C_ICR_INIT (ICR_BEIE | ICR_IRFIE | ICR_ITEIE | ICR_GCD | ICR_SCLE) + +/* I2C status register init values + * + * 10. BED 1 (Clear bus error detected) + * 9. SAD 1 (Clear slave address detected) + * 7. IRF 1 (Clear IDBR Receive Full) + * 6. ITE 1 (Clear IDBR Transmit Empty) + * 5. ALD 1 (Clear Arbitration Loss Detected) + * 4. SSD 1 (Clear Slave Stop Detected) + */ +#define I2C_ISR_INIT 0x7FF /* status register init */ + +struct i2c_slave_client; + +struct i2c_pxa_platform_data { + unsigned int slave_addr; + struct i2c_slave_client *slave; + unsigned int class; + unsigned int use_pio :1; + unsigned int fast_mode :1; +}; + +extern void pxa_set_i2c_info(struct i2c_pxa_platform_data *info); + +#ifdef CONFIG_PXA27x +extern void pxa27x_set_i2c_power_info(struct i2c_pxa_platform_data *info); +#endif + +#ifdef CONFIG_PXA3xx +extern void pxa3xx_set_i2c_power_info(struct i2c_pxa_platform_data *info); +#endif + +#endif -- cgit v1.2.3 From 5e84ea3a9c662dc2d7a48703a4468fad954a3b7f Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Mon, 21 Mar 2011 10:14:27 +0100 Subject: block: attempt to merge with existing requests on plug flush One of the disadvantages of on-stack plugging is that we potentially lose out on merging since all pending IO isn't always visible to everybody. When we flush the on-stack plugs, right now we don't do any checks to see if potential merge candidates could be utilized. Correct this by adding a new insert variant, ELEVATOR_INSERT_SORT_MERGE. It works just ELEVATOR_INSERT_SORT, but first checks whether we can merge with an existing request before doing the insertion (if we fail merging). This fixes a regression with multiple processes issuing IO that can be merged. Thanks to Shaohua Li for testing and fixing an accounting bug. Signed-off-by: Jens Axboe --- include/linux/elevator.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/elevator.h b/include/linux/elevator.h index ec6f72b84477..d93efcc44570 100644 --- a/include/linux/elevator.h +++ b/include/linux/elevator.h @@ -166,6 +166,7 @@ extern struct request *elv_rb_find(struct rb_root *, sector_t); #define ELEVATOR_INSERT_SORT 3 #define ELEVATOR_INSERT_REQUEUE 4 #define ELEVATOR_INSERT_FLUSH 5 +#define ELEVATOR_INSERT_SORT_MERGE 6 /* * return values from elevator_may_queue_fn -- cgit v1.2.3 From 0f60f240d522772467c7d2cebedb910748c78ed4 Mon Sep 17 00:00:00 2001 From: David Howells Date: Mon, 21 Mar 2011 14:28:58 +0000 Subject: FS: lookup_mnt() is only used in the core fs routines now lookup_mnt() is only used in the core fs routines now, so it doesn't need to be globally declared anymore. It isn't exported to modules at the moment, so nothing that can be modularised seems to be using it. Signed-off-by: David Howells Signed-off-by: Al Viro --- include/linux/dcache.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/dcache.h b/include/linux/dcache.h index 1a87760d6532..f2afed4fa945 100644 --- a/include/linux/dcache.h +++ b/include/linux/dcache.h @@ -416,7 +416,6 @@ static inline bool d_mountpoint(struct dentry *dentry) return dentry->d_flags & DCACHE_MOUNTED; } -extern struct vfsmount *lookup_mnt(struct path *); extern struct dentry *lookup_create(struct nameidata *nd, int is_dir); extern int sysctl_vfs_cache_pressure; -- cgit v1.2.3 From 8b8bae901ce23addbdcdb54fa1696fb2d049feb5 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Sat, 5 Mar 2011 13:21:51 +0100 Subject: PCI/ACPI: Report ASPM support to BIOS if not disabled from command line MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit We need to distinguish the situation in which ASPM support is disabled from the command line or through .config from the situation in which it is disabled, because the hardware or BIOS can't handle it. In the former case we should not report ASPM support to the BIOS through ACPI _OSC, but in the latter case we should do that. Introduce pcie_aspm_support_enabled() that can be used by acpi_pci_root_add() to determine whether or not it should report ASPM support to the BIOS through _OSC. Cc: stable@kernel.org References: https://bugzilla.kernel.org/show_bug.cgi?id=29722 References: https://bugzilla.kernel.org/show_bug.cgi?id=20232 Reported-and-tested-by: Ortwin Glück Reviewed-by: Kenji Kaneshige Tested-by: Kenji Kaneshige Signed-off-by: Rafael J. Wysocki Signed-off-by: Jesse Barnes --- include/linux/pci.h | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/pci.h b/include/linux/pci.h index 16c9f2e61977..96f70d7e058d 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1002,12 +1002,11 @@ extern bool pcie_ports_auto; #endif #ifndef CONFIG_PCIEASPM -static inline int pcie_aspm_enabled(void) -{ - return 0; -} +static inline int pcie_aspm_enabled(void) { return 0; } +static inline bool pcie_aspm_support_enabled(void) { return false; } #else extern int pcie_aspm_enabled(void); +extern bool pcie_aspm_support_enabled(void); #endif #ifdef CONFIG_PCIEAER -- cgit v1.2.3 From 1a680b7c325882188865f05b9a88d32f75f26495 Mon Sep 17 00:00:00 2001 From: Naga Chumbalkar Date: Mon, 21 Mar 2011 03:29:08 +0000 Subject: PCI: PCIe links may not get configured for ASPM under POWERSAVE mode v3 -> v2: Moved ASPM enabling logic to pci_set_power_state() v2 -> v1: Preserved the logic in pci_raw_set_power_state() : Added ASPM enabling logic after scanning Root Bridge : http://marc.info/?l=linux-pci&m=130046996216391&w=2 v1 : http://marc.info/?l=linux-pci&m=130013164703283&w=2 The assumption made in commit 41cd766b065970ff6f6c89dd1cf55fa706c84a3d (PCI: Don't enable aspm before drivers have had a chance to veto it) that pci_enable_device() will result in re-configuring ASPM when aspm_policy is POWERSAVE is no longer valid. This is due to commit 97c145f7c87453cec90e91238fba5fe2c1561b32 (PCI: read current power state at enable time) which resets dev->current_state to D0. Due to this the call to pcie_aspm_pm_state_change() is never made. Note the equality check (below) that returns early: ./drivers/pci/pci.c: pci_raw_set_pci_power_state() 546 /* Check if we're already there */ 547 if (dev->current_state == state) 548 return 0; Therefore OSPM never configures the PCIe links for ASPM to turn them "on". Fix it by configuring ASPM from the pci_enable_device() code path. This also allows a driver such as the e1000e networking driver a chance to disable ASPM (L0s, L1), if need be, prior to enabling the device. A driver may perform this action if the device is known to mis-behave wrt ASPM. Signed-off-by: Naga Chumbalkar Acked-by: Rafael J. Wysocki Cc: Matthew Garrett Signed-off-by: Jesse Barnes --- include/linux/pci-aspm.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pci-aspm.h b/include/linux/pci-aspm.h index ce6810512c66..67cb3ae38016 100644 --- a/include/linux/pci-aspm.h +++ b/include/linux/pci-aspm.h @@ -26,6 +26,7 @@ extern void pcie_aspm_init_link_state(struct pci_dev *pdev); extern void pcie_aspm_exit_link_state(struct pci_dev *pdev); extern void pcie_aspm_pm_state_change(struct pci_dev *pdev); +extern void pcie_aspm_powersave_config_link(struct pci_dev *pdev); extern void pci_disable_link_state(struct pci_dev *pdev, int state); extern void pcie_clear_aspm(void); extern void pcie_no_aspm(void); @@ -39,6 +40,9 @@ static inline void pcie_aspm_exit_link_state(struct pci_dev *pdev) static inline void pcie_aspm_pm_state_change(struct pci_dev *pdev) { } +static inline void pcie_aspm_powersave_config_link(struct pci_dev *pdev) +{ +} static inline void pci_disable_link_state(struct pci_dev *pdev, int state) { } -- cgit v1.2.3 From 8c22a8f57516275afcd81c84f3724ac08cf6aa7b Mon Sep 17 00:00:00 2001 From: Dirk Eibach Date: Mon, 21 Mar 2011 17:59:36 +0100 Subject: hwmon: Add support for Texas Instruments ADS1015 Signed-off-by: Dirk Eibach Signed-off-by: Jean Delvare --- include/linux/i2c/ads1015.h | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 include/linux/i2c/ads1015.h (limited to 'include/linux') diff --git a/include/linux/i2c/ads1015.h b/include/linux/i2c/ads1015.h new file mode 100644 index 000000000000..8541c6acfafd --- /dev/null +++ b/include/linux/i2c/ads1015.h @@ -0,0 +1,28 @@ +/* + * Platform Data for ADS1015 12-bit 4-input ADC + * (C) Copyright 2010 + * Dirk Eibach, Guntermann & Drunck GmbH + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#ifndef LINUX_ADS1015_H +#define LINUX_ADS1015_H + +struct ads1015_platform_data { + unsigned int exported_channels; +}; + +#endif /* LINUX_ADS1015_H */ -- cgit v1.2.3 From c0046867f34bb81ec3f237ebbc5241ae678b8379 Mon Sep 17 00:00:00 2001 From: Dirk Eibach Date: Mon, 21 Mar 2011 17:59:37 +0100 Subject: hwmon: (ads1015) Make gain and datarate configurable Configuration for ads1015 gain and datarate is possible via devicetree or platform data. This is a followup patch to previous ads1015 patches on Jean Delvares tree. Signed-off-by: Dirk Eibach Signed-off-by: Jean Delvare --- include/linux/i2c/ads1015.h | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/i2c/ads1015.h b/include/linux/i2c/ads1015.h index 8541c6acfafd..d5aa2a045669 100644 --- a/include/linux/i2c/ads1015.h +++ b/include/linux/i2c/ads1015.h @@ -21,8 +21,16 @@ #ifndef LINUX_ADS1015_H #define LINUX_ADS1015_H +#define ADS1015_CHANNELS 8 + +struct ads1015_channel_data { + bool enabled; + unsigned int pga; + unsigned int data_rate; +}; + struct ads1015_platform_data { - unsigned int exported_channels; + struct ads1015_channel_data channel_data[ADS1015_CHANNELS]; }; #endif /* LINUX_ADS1015_H */ -- cgit v1.2.3 From 6f6c7006755b667f9f6c1f3b6f08cd65f75cc471 Mon Sep 17 00:00:00 2001 From: Sage Weil Date: Mon, 17 Jan 2011 20:34:08 -0800 Subject: libceph: fix osd request queuing on osdmap updates If we send a request to osd A, and the request's pg remaps to osd B and then back to A in quick succession, we need to resend the request to A. The old code was only calling kick_requests after processing all incremental maps in a message, so it was very possible to not resend a request that needed to be resent. This would make the osd eventually time out (at least with the current default of osd timeouts enabled). The correct approach is to scan requests on every map incremental. This patch refactors the kick code in a few ways: - all requests are either on req_lru (in flight), req_unsent (ready to send), or req_notarget (currently map to no up osd) - mapping always done by map_request (previous map_osds) - if the mapping changes, we requeue. requests are resent only after all map incrementals are processed. - some osd reset code is moved out of kick_requests into a separate function - the "kick this osd" functionality is moved to kick_osd_requests, as it is unrelated to scanning for request->pg->osd mapping changes Signed-off-by: Sage Weil --- include/linux/ceph/osd_client.h | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h index a1af29648fb5..e791b8e46353 100644 --- a/include/linux/ceph/osd_client.h +++ b/include/linux/ceph/osd_client.h @@ -74,7 +74,6 @@ struct ceph_osd_request { char r_oid[40]; /* object name */ int r_oid_len; unsigned long r_stamp; /* send OR check time */ - bool r_resend; /* msg send failed, needs retry */ struct ceph_file_layout r_file_layout; struct ceph_snap_context *r_snapc; /* snap context for writes */ @@ -104,7 +103,9 @@ struct ceph_osd_client { u64 timeout_tid; /* tid of timeout triggering rq */ u64 last_tid; /* tid of last request */ struct rb_root requests; /* pending requests */ - struct list_head req_lru; /* pending requests lru */ + struct list_head req_lru; /* in-flight lru */ + struct list_head req_unsent; /* unsent/need-resend queue */ + struct list_head req_notarget; /* map to no osd */ int num_requests; struct delayed_work timeout_work; struct delayed_work osds_timeout_work; -- cgit v1.2.3 From 483fac71485e5063ff4033b6dc7d91567f1b6ff1 Mon Sep 17 00:00:00 2001 From: Yehuda Sadeh Date: Thu, 20 Jan 2011 16:36:06 -0800 Subject: ceph: update common header files This updates the common header files used by the different ceph related modules. Specifically it adds definitions required by the rbd watch/notify feature. Signed-off-by: Yehuda Sadeh --- include/linux/ceph/ceph_fs.h | 19 +++++++++++++++---- include/linux/ceph/rados.h | 39 ++++++++++++++++++++++++++++++--------- 2 files changed, 45 insertions(+), 13 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ceph/ceph_fs.h b/include/linux/ceph/ceph_fs.h index 09dcc0c2ffd5..b8e995fbd867 100644 --- a/include/linux/ceph/ceph_fs.h +++ b/include/linux/ceph/ceph_fs.h @@ -136,9 +136,18 @@ struct ceph_dir_layout { /* osd */ -#define CEPH_MSG_OSD_MAP 41 -#define CEPH_MSG_OSD_OP 42 -#define CEPH_MSG_OSD_OPREPLY 43 +#define CEPH_MSG_OSD_MAP 41 +#define CEPH_MSG_OSD_OP 42 +#define CEPH_MSG_OSD_OPREPLY 43 +#define CEPH_MSG_WATCH_NOTIFY 44 + + +/* watch-notify operations */ +enum { + WATCH_NOTIFY = 1, /* notifying watcher */ + WATCH_NOTIFY_COMPLETE = 2, /* notifier notified when done */ +}; + /* pool operations */ enum { @@ -213,8 +222,10 @@ struct ceph_client_mount { struct ceph_mon_request_header monhdr; } __attribute__ ((packed)); +#define CEPH_SUBSCRIBE_ONETIME 1 /* i want only 1 update after have */ + struct ceph_mon_subscribe_item { - __le64 have_version; __le64 have; + __le64 have_version; __le64 have; __u8 onetime; } __attribute__ ((packed)); diff --git a/include/linux/ceph/rados.h b/include/linux/ceph/rados.h index 6d5247f2e81b..0a99099801a4 100644 --- a/include/linux/ceph/rados.h +++ b/include/linux/ceph/rados.h @@ -12,9 +12,9 @@ * osdmap encoding versions */ #define CEPH_OSDMAP_INC_VERSION 5 -#define CEPH_OSDMAP_INC_VERSION_EXT 5 +#define CEPH_OSDMAP_INC_VERSION_EXT 6 #define CEPH_OSDMAP_VERSION 5 -#define CEPH_OSDMAP_VERSION_EXT 5 +#define CEPH_OSDMAP_VERSION_EXT 6 /* * fs id @@ -181,9 +181,17 @@ enum { /* read */ CEPH_OSD_OP_READ = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 1, CEPH_OSD_OP_STAT = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 2, + CEPH_OSD_OP_MAPEXT = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 3, /* fancy read */ - CEPH_OSD_OP_MASKTRUNC = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 4, + CEPH_OSD_OP_MASKTRUNC = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 4, + CEPH_OSD_OP_SPARSE_READ = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 5, + + CEPH_OSD_OP_NOTIFY = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 6, + CEPH_OSD_OP_NOTIFY_ACK = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 7, + + /* versioning */ + CEPH_OSD_OP_ASSERT_VER = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 8, /* write */ CEPH_OSD_OP_WRITE = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 1, @@ -205,6 +213,8 @@ enum { CEPH_OSD_OP_CREATE = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 13, CEPH_OSD_OP_ROLLBACK= CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 14, + CEPH_OSD_OP_WATCH = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 15, + /** attrs **/ /* read */ CEPH_OSD_OP_GETXATTR = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_ATTR | 1, @@ -218,11 +228,14 @@ enum { CEPH_OSD_OP_RMXATTR = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_ATTR | 4, /** subop **/ - CEPH_OSD_OP_PULL = CEPH_OSD_OP_MODE_SUB | 1, - CEPH_OSD_OP_PUSH = CEPH_OSD_OP_MODE_SUB | 2, - CEPH_OSD_OP_BALANCEREADS = CEPH_OSD_OP_MODE_SUB | 3, - CEPH_OSD_OP_UNBALANCEREADS = CEPH_OSD_OP_MODE_SUB | 4, - CEPH_OSD_OP_SCRUB = CEPH_OSD_OP_MODE_SUB | 5, + CEPH_OSD_OP_PULL = CEPH_OSD_OP_MODE_SUB | 1, + CEPH_OSD_OP_PUSH = CEPH_OSD_OP_MODE_SUB | 2, + CEPH_OSD_OP_BALANCEREADS = CEPH_OSD_OP_MODE_SUB | 3, + CEPH_OSD_OP_UNBALANCEREADS = CEPH_OSD_OP_MODE_SUB | 4, + CEPH_OSD_OP_SCRUB = CEPH_OSD_OP_MODE_SUB | 5, + CEPH_OSD_OP_SCRUB_RESERVE = CEPH_OSD_OP_MODE_SUB | 6, + CEPH_OSD_OP_SCRUB_UNRESERVE = CEPH_OSD_OP_MODE_SUB | 7, + CEPH_OSD_OP_SCRUB_STOP = CEPH_OSD_OP_MODE_SUB | 8, /** lock **/ CEPH_OSD_OP_WRLOCK = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_LOCK | 1, @@ -328,6 +341,8 @@ enum { CEPH_OSD_CMPXATTR_MODE_U64 = 2 }; +#define RADOS_NOTIFY_VER 1 + /* * an individual object operation. each may be accompanied by some data * payload @@ -359,7 +374,12 @@ struct ceph_osd_op { struct { __le64 snapid; } __attribute__ ((packed)) snap; - }; + struct { + __le64 cookie; + __le64 ver; + __u8 flag; /* 0 = unwatch, 1 = watch */ + } __attribute__ ((packed)) watch; +}; __le32 payload_len; } __attribute__ ((packed)); @@ -402,4 +422,5 @@ struct ceph_osd_reply_head { } __attribute__ ((packed)); + #endif -- cgit v1.2.3 From 80456f8672f7e69d05c01627da03587dc1ea1603 Mon Sep 17 00:00:00 2001 From: Sage Weil Date: Thu, 10 Mar 2011 13:33:26 -0800 Subject: ceph: move readahead default to fs/ceph from libceph Signed-off-by: Sage Weil --- include/linux/ceph/libceph.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/ceph/libceph.h b/include/linux/ceph/libceph.h index 72c72bfccb88..0d2e0fffb470 100644 --- a/include/linux/ceph/libceph.h +++ b/include/linux/ceph/libceph.h @@ -71,7 +71,6 @@ struct ceph_options { #define CEPH_OSD_TIMEOUT_DEFAULT 60 /* seconds */ #define CEPH_OSD_KEEPALIVE_DEFAULT 5 #define CEPH_OSD_IDLE_TTL_DEFAULT 60 -#define CEPH_MOUNT_RSIZE_DEFAULT (512*1024) /* readahead */ #define CEPH_MSG_MAX_FRONT_LEN (16*1024*1024) #define CEPH_MSG_MAX_DATA_LEN (16*1024*1024) -- cgit v1.2.3 From f8f3914cf922f5f9e1d60e9e10f6fb92742907ad Mon Sep 17 00:00:00 2001 From: Pawel Osciak Date: Thu, 29 Jul 2010 14:44:25 -0300 Subject: [media] v4l: Add multi-planar API definitions to the V4L2 API Multi-planar API is as a backwards-compatible extension of the V4L2 API, which allows video buffers to consist of one or more planes. Planes are separate memory buffers; each has its own mapping, backed by usually separate physical memory buffers. Many different uses for the multi-planar API are possible, examples include: - embedded devices requiring video components to be placed in physically separate buffers, e.g. for Samsung S3C/S5P SoC series' video codec, Y and interleaved Cb/Cr components reside in buffers in different memory banks; - applications may receive (or choose to store) video data of one video buffer in separate memory buffers; such data would have to be temporarily copied together into one buffer before passing it to a V4L2 device; - applications or drivers may want to pass metadata related to a buffer and it may not be possible to place it in the same buffer, together with video data. [mchehab@redhat.com: CodingStyle fixes] Signed-off-by: Pawel Osciak Signed-off-by: Kyungmin Park Reviewed-by: Marek Szyprowski Signed-off-by: Marek Szyprowski Reviewed-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- include/linux/videodev2.h | 124 +++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 122 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h index 5f6f47044abf..bb0a3ae2ebd0 100644 --- a/include/linux/videodev2.h +++ b/include/linux/videodev2.h @@ -70,6 +70,7 @@ * Moved from videodev.h */ #define VIDEO_MAX_FRAME 32 +#define VIDEO_MAX_PLANES 8 #ifndef __KERNEL__ @@ -157,9 +158,23 @@ enum v4l2_buf_type { /* Experimental */ V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY = 8, #endif + V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE = 9, + V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE = 10, V4L2_BUF_TYPE_PRIVATE = 0x80, }; +#define V4L2_TYPE_IS_MULTIPLANAR(type) \ + ((type) == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE \ + || (type) == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) + +#define V4L2_TYPE_IS_OUTPUT(type) \ + ((type) == V4L2_BUF_TYPE_VIDEO_OUTPUT \ + || (type) == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE \ + || (type) == V4L2_BUF_TYPE_VIDEO_OVERLAY \ + || (type) == V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY \ + || (type) == V4L2_BUF_TYPE_VBI_OUTPUT \ + || (type) == V4L2_BUF_TYPE_SLICED_VBI_OUTPUT) + enum v4l2_tuner_type { V4L2_TUNER_RADIO = 1, V4L2_TUNER_ANALOG_TV = 2, @@ -245,6 +260,11 @@ struct v4l2_capability { #define V4L2_CAP_HW_FREQ_SEEK 0x00000400 /* Can do hardware frequency seek */ #define V4L2_CAP_RDS_OUTPUT 0x00000800 /* Is an RDS encoder */ +/* Is a video capture device that supports multiplanar formats */ +#define V4L2_CAP_VIDEO_CAPTURE_MPLANE 0x00001000 +/* Is a video output device that supports multiplanar formats */ +#define V4L2_CAP_VIDEO_OUTPUT_MPLANE 0x00002000 + #define V4L2_CAP_TUNER 0x00010000 /* has a tuner */ #define V4L2_CAP_AUDIO 0x00020000 /* has audio support */ #define V4L2_CAP_RADIO 0x00040000 /* is a radio device */ @@ -517,6 +537,62 @@ struct v4l2_requestbuffers { __u32 reserved[2]; }; +/** + * struct v4l2_plane - plane info for multi-planar buffers + * @bytesused: number of bytes occupied by data in the plane (payload) + * @length: size of this plane (NOT the payload) in bytes + * @mem_offset: when memory in the associated struct v4l2_buffer is + * V4L2_MEMORY_MMAP, equals the offset from the start of + * the device memory for this plane (or is a "cookie" that + * should be passed to mmap() called on the video node) + * @userptr: when memory is V4L2_MEMORY_USERPTR, a userspace pointer + * pointing to this plane + * @data_offset: offset in the plane to the start of data; usually 0, + * unless there is a header in front of the data + * + * Multi-planar buffers consist of one or more planes, e.g. an YCbCr buffer + * with two planes can have one plane for Y, and another for interleaved CbCr + * components. Each plane can reside in a separate memory buffer, or even in + * a completely separate memory node (e.g. in embedded devices). + */ +struct v4l2_plane { + __u32 bytesused; + __u32 length; + union { + __u32 mem_offset; + unsigned long userptr; + } m; + __u32 data_offset; + __u32 reserved[11]; +}; + +/** + * struct v4l2_buffer - video buffer info + * @index: id number of the buffer + * @type: buffer type (type == *_MPLANE for multiplanar buffers) + * @bytesused: number of bytes occupied by data in the buffer (payload); + * unused (set to 0) for multiplanar buffers + * @flags: buffer informational flags + * @field: field order of the image in the buffer + * @timestamp: frame timestamp + * @timecode: frame timecode + * @sequence: sequence count of this frame + * @memory: the method, in which the actual video data is passed + * @offset: for non-multiplanar buffers with memory == V4L2_MEMORY_MMAP; + * offset from the start of the device memory for this plane, + * (or a "cookie" that should be passed to mmap() as offset) + * @userptr: for non-multiplanar buffers with memory == V4L2_MEMORY_USERPTR; + * a userspace pointer pointing to this buffer + * @planes: for multiplanar buffers; userspace pointer to the array of plane + * info structs for this buffer + * @length: size in bytes of the buffer (NOT its payload) for single-plane + * buffers (when type != *_MPLANE); number of elements in the + * planes array for multi-plane buffers + * @input: input number from which the video data has has been captured + * + * Contains data exchanged by application and driver using one of the Streaming + * I/O methods. + */ struct v4l2_buffer { __u32 index; enum v4l2_buf_type type; @@ -532,6 +608,7 @@ struct v4l2_buffer { union { __u32 offset; unsigned long userptr; + struct v4l2_plane *planes; } m; __u32 length; __u32 input; @@ -1622,12 +1699,56 @@ struct v4l2_mpeg_vbi_fmt_ivtv { * A G G R E G A T E S T R U C T U R E S */ -/* Stream data format +/** + * struct v4l2_plane_pix_format - additional, per-plane format definition + * @sizeimage: maximum size in bytes required for data, for which + * this plane will be used + * @bytesperline: distance in bytes between the leftmost pixels in two + * adjacent lines + */ +struct v4l2_plane_pix_format { + __u32 sizeimage; + __u16 bytesperline; + __u16 reserved[7]; +} __attribute__ ((packed)); + +/** + * struct v4l2_pix_format_mplane - multiplanar format definition + * @width: image width in pixels + * @height: image height in pixels + * @pixelformat: little endian four character code (fourcc) + * @field: field order (for interlaced video) + * @colorspace: supplemental to pixelformat + * @plane_fmt: per-plane information + * @num_planes: number of planes for this format + */ +struct v4l2_pix_format_mplane { + __u32 width; + __u32 height; + __u32 pixelformat; + enum v4l2_field field; + enum v4l2_colorspace colorspace; + + struct v4l2_plane_pix_format plane_fmt[VIDEO_MAX_PLANES]; + __u8 num_planes; + __u8 reserved[11]; +} __attribute__ ((packed)); + +/** + * struct v4l2_format - stream data format + * @type: type of the data stream + * @pix: definition of an image format + * @pix_mp: definition of a multiplanar image format + * @win: definition of an overlaid image + * @vbi: raw VBI capture or output parameters + * @sliced: sliced VBI capture or output parameters + * @raw_data: placeholder for future extensions and custom formats */ struct v4l2_format { enum v4l2_buf_type type; union { struct v4l2_pix_format pix; /* V4L2_BUF_TYPE_VIDEO_CAPTURE */ + struct v4l2_pix_format_mplane pix_mp; /* V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE */ struct v4l2_window win; /* V4L2_BUF_TYPE_VIDEO_OVERLAY */ struct v4l2_vbi_format vbi; /* V4L2_BUF_TYPE_VBI_CAPTURE */ struct v4l2_sliced_vbi_format sliced; /* V4L2_BUF_TYPE_SLICED_VBI_CAPTURE */ @@ -1635,7 +1756,6 @@ struct v4l2_format { } fmt; }; - /* Stream type-dependent parameters */ struct v4l2_streamparm { -- cgit v1.2.3 From 4a3c9b4f0df43207eb0b4d0da9cb51e185506bd5 Mon Sep 17 00:00:00 2001 From: Sylwester Nawrocki Date: Tue, 28 Dec 2010 12:32:39 -0300 Subject: [media] v4l: Add multiplanar format fourccs for s5p-fimc driver Add definitions for format with color planes non-contiguous in physical memory. These formats apply only if the V4L2 multiplane extension is used. V4L2_PIX_FMT_NV12M - 2-plane Y/CbCr V4L2_PIX_FMT_NV12MT - 2-plane Y/CbCr tiled (64x32 pixel macroblocks) V4L2_PIX_FMT_YUV420M - 3-plane Y/Cb/Cr Signed-off-by: Sylwester Nawrocki Signed-off-by: Kyungmin Park Signed-off-by: Mauro Carvalho Chehab --- include/linux/videodev2.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h index bb0a3ae2ebd0..5122b265dde6 100644 --- a/include/linux/videodev2.h +++ b/include/linux/videodev2.h @@ -339,6 +339,13 @@ struct v4l2_pix_format { #define V4L2_PIX_FMT_NV16 v4l2_fourcc('N', 'V', '1', '6') /* 16 Y/CbCr 4:2:2 */ #define V4L2_PIX_FMT_NV61 v4l2_fourcc('N', 'V', '6', '1') /* 16 Y/CrCb 4:2:2 */ +/* two non contiguous planes - one Y, one Cr + Cb interleaved */ +#define V4L2_PIX_FMT_NV12M v4l2_fourcc('N', 'M', '1', '2') /* 12 Y/CbCr 4:2:0 */ +#define V4L2_PIX_FMT_NV12MT v4l2_fourcc('T', 'M', '1', '2') /* 12 Y/CbCr 4:2:0 64x32 macroblocks */ + +/* three non contiguous planes - Y, Cb, Cr */ +#define V4L2_PIX_FMT_YUV420M v4l2_fourcc('Y', 'M', '1', '2') /* 12 YUV420 planar */ + /* Bayer formats - see http://www.siliconimaging.com/RGB%20Bayer.htm */ #define V4L2_PIX_FMT_SBGGR8 v4l2_fourcc('B', 'A', '8', '1') /* 8 BGBG.. GRGR.. */ #define V4L2_PIX_FMT_SGBRG8 v4l2_fourcc('G', 'B', 'R', 'G') /* 8 GBGB.. RGRG.. */ -- cgit v1.2.3 From 7ee40aadabd59b6cab60835f0ef9cdbe385df438 Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Sat, 5 Feb 2011 10:10:38 -0300 Subject: [media] v4l: removal of old, obsolete ioctls Some ioctl's were defined wrong on 2.6.2 and 2.6.6, using the wrong type of R/W arguments. They were fixed, but the old ioctl names are still there, maintained to avoid breaking binary compatibility: There's no sense on preserving those forever, as it is very doubtful that someone would try to use a such old binary with a modern kernel. Removing them will allow us to remove some magic done at the V4L ioctl handler. Note that any application compiled with a videodev2.h from 2.6.7 or later will be using the correct ioctls. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- include/linux/videodev2.h | 10 ---------- 1 file changed, 10 deletions(-) (limited to 'include/linux') diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h index 5122b265dde6..a94c4d5ac340 100644 --- a/include/linux/videodev2.h +++ b/include/linux/videodev2.h @@ -1935,16 +1935,6 @@ struct v4l2_dbg_chip_ident { /* Reminder: when adding new ioctls please add support for them to drivers/media/video/v4l2-compat-ioctl32.c as well! */ -#ifdef __OLD_VIDIOC_ -/* for compatibility, will go away some day */ -#define VIDIOC_OVERLAY_OLD _IOWR('V', 14, int) -#define VIDIOC_S_PARM_OLD _IOW('V', 22, struct v4l2_streamparm) -#define VIDIOC_S_CTRL_OLD _IOW('V', 28, struct v4l2_control) -#define VIDIOC_G_AUDIO_OLD _IOWR('V', 33, struct v4l2_audio) -#define VIDIOC_G_AUDOUT_OLD _IOWR('V', 49, struct v4l2_audioout) -#define VIDIOC_CROPCAP_OLD _IOR('V', 58, struct v4l2_cropcap) -#endif - #define BASE_VIDIOC_PRIVATE 192 /* 192-255 are private */ #endif /* __LINUX_VIDEODEV2_H */ -- cgit v1.2.3 From 94fd5b7401e330498331ea3667d796e74c63d08a Mon Sep 17 00:00:00 2001 From: Matti Aaltonen Date: Tue, 1 Mar 2011 10:10:35 -0300 Subject: [media] MFD: WL1273 FM Radio: MFD driver for the FM radio This is the core of the WL1273 FM radio driver, it connects the two child modules. The two child drivers are drivers/media/radio/radio-wl1273.c and sound/soc/codecs/wl1273.c. The radio-wl1273 driver implements the V4L2 interface and communicates with the device. The ALSA codec offers digital audio, without it only analog audio is available. Signed-off-by: Matti J. Aaltonen Acked-by: Samuel Ortiz Signed-off-by: Mauro Carvalho Chehab --- include/linux/mfd/wl1273-core.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/wl1273-core.h b/include/linux/mfd/wl1273-core.h index 9787293eae5f..db2f3f454a1b 100644 --- a/include/linux/mfd/wl1273-core.h +++ b/include/linux/mfd/wl1273-core.h @@ -280,7 +280,9 @@ struct wl1273_core { struct i2c_client *client; + int (*read)(struct wl1273_core *core, u8, u16 *); int (*write)(struct wl1273_core *core, u8, u16); + int (*write_data)(struct wl1273_core *core, u8 *, u16); int (*set_audio)(struct wl1273_core *core, unsigned int); int (*set_volume)(struct wl1273_core *core, unsigned int); }; -- cgit v1.2.3 From b31268ac793fd300da66b9c28bbf0a200339ab96 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Mon, 21 Mar 2011 17:02:00 -0400 Subject: FS: Use stable writes when not doing a bulk flush If we're only doing a single write, and there are no other unstable writes being queued up, we might want to just flip to using a stable write RPC call. Reviewed-by: NeilBrown Signed-off-by: Trond Myklebust --- include/linux/nfs_fs.h | 2 ++ include/linux/nfs_page.h | 1 + 2 files changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h index f88522b10a38..cb2add401f25 100644 --- a/include/linux/nfs_fs.h +++ b/include/linux/nfs_fs.h @@ -33,6 +33,8 @@ #define FLUSH_STABLE 4 /* commit to stable storage */ #define FLUSH_LOWPRI 8 /* low priority background flush */ #define FLUSH_HIGHPRI 16 /* high priority memory reclaim flush */ +#define FLUSH_COND_STABLE 32 /* conditional stable write - only stable + * if everything fits in one RPC */ #ifdef __KERNEL__ diff --git a/include/linux/nfs_page.h b/include/linux/nfs_page.h index 90907ada6d52..92d54c81f51e 100644 --- a/include/linux/nfs_page.h +++ b/include/linux/nfs_page.h @@ -57,6 +57,7 @@ struct nfs_pageio_descriptor { size_t pg_count; size_t pg_bsize; unsigned int pg_base; + char pg_moreio; struct inode *pg_inode; int (*pg_doio)(struct nfs_pageio_descriptor *); -- cgit v1.2.3 From c413d7682020a127f54744a1b30f597692aea1fd Mon Sep 17 00:00:00 2001 From: Huang Ying Date: Mon, 21 Feb 2011 13:54:43 +0800 Subject: ACPI, APEI, Add PCIe AER error information printing support The AER error information printing support is implemented in drivers/pci/pcie/aer/aer_print.c. So some string constants, functions and macros definitions can be re-used without being exported. The original PCIe AER error information printing function is not re-used directly because the overall format is quite different. And changing the original printing format may make some original users' scripts broken. Signed-off-by: Huang Ying CC: Jesse Barnes CC: Zhang Yanmin Signed-off-by: Len Brown --- include/linux/aer.h | 24 ++++++++++++++++++++++++ include/linux/cper.h | 2 ++ 2 files changed, 26 insertions(+) (limited to 'include/linux') diff --git a/include/linux/aer.h b/include/linux/aer.h index f7df1eefc107..8414de22a779 100644 --- a/include/linux/aer.h +++ b/include/linux/aer.h @@ -7,6 +7,28 @@ #ifndef _AER_H_ #define _AER_H_ +struct aer_header_log_regs { + unsigned int dw0; + unsigned int dw1; + unsigned int dw2; + unsigned int dw3; +}; + +struct aer_capability_regs { + u32 header; + u32 uncor_status; + u32 uncor_mask; + u32 uncor_severity; + u32 cor_status; + u32 cor_mask; + u32 cap_control; + struct aer_header_log_regs header_log; + u32 root_command; + u32 root_status; + u16 cor_err_source; + u16 uncor_err_source; +}; + #if defined(CONFIG_PCIEAER) /* pci-e port driver needs this function to enable aer */ extern int pci_enable_pcie_error_reporting(struct pci_dev *dev); @@ -27,5 +49,7 @@ static inline int pci_cleanup_aer_uncorrect_error_status(struct pci_dev *dev) } #endif +extern void cper_print_aer(const char *prefix, int cper_severity, + struct aer_capability_regs *aer); #endif //_AER_H_ diff --git a/include/linux/cper.h b/include/linux/cper.h index 3104aaff5dd0..372a25839fd1 100644 --- a/include/linux/cper.h +++ b/include/linux/cper.h @@ -388,5 +388,7 @@ struct cper_sec_pcie { #pragma pack() u64 cper_next_record_id(void); +void cper_print_bits(const char *prefix, unsigned int bits, + const char *strs[], unsigned int strs_size); #endif -- cgit v1.2.3 From 1284e49cf186eaa19056e85a76a443d4eca8995d Mon Sep 17 00:00:00 2001 From: David Miller Date: Tue, 11 Jan 2011 23:49:03 +0000 Subject: svga: Use proper VGA register name macros in svga_wattr. Instead of magic register location constants. Signed-off-by: David S. Miller Signed-off-by: Paul Mundt --- include/linux/svga.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/svga.h b/include/linux/svga.h index c59a51a2b0e7..3fc52cb0bcb4 100644 --- a/include/linux/svga.h +++ b/include/linux/svga.h @@ -69,9 +69,9 @@ struct svga_pll { static inline void svga_wattr(u8 index, u8 data) { - inb(0x3DA); - outb(index, 0x3C0); - outb(data, 0x3C0); + inb(VGA_IS1_RC); + outb(index, VGA_ATT_IW); + outb(data, VGA_ATT_W); } /* Write a value to a sequence register with a mask */ -- cgit v1.2.3 From f6b0cc477de99fe715f1071b13ab822daed9a34f Mon Sep 17 00:00:00 2001 From: David Miller Date: Tue, 11 Jan 2011 23:49:18 +0000 Subject: svga: Make svga_wattr take an iomem regbase pointer. And use vga_{r,w}(). Signed-off-by: David S. Miller Signed-off-by: Paul Mundt --- include/linux/svga.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/svga.h b/include/linux/svga.h index 3fc52cb0bcb4..95d39412a3c2 100644 --- a/include/linux/svga.h +++ b/include/linux/svga.h @@ -67,11 +67,11 @@ struct svga_pll { /* Write a value to the attribute register */ -static inline void svga_wattr(u8 index, u8 data) +static inline void svga_wattr(void __iomem *regbase, u8 index, u8 data) { - inb(VGA_IS1_RC); - outb(index, VGA_ATT_IW); - outb(data, VGA_ATT_W); + vga_r(regbase, VGA_IS1_RC); + vga_w(regbase, VGA_ATT_IW, index); + vga_w(regbase, VGA_ATT_W, data); } /* Write a value to a sequence register with a mask */ -- cgit v1.2.3 From 21da386d0e4c55f6f7482b4637532b942e22b70a Mon Sep 17 00:00:00 2001 From: David Miller Date: Tue, 11 Jan 2011 23:49:34 +0000 Subject: svga: Make svga_wcrt_multi take an iomem regbase pointer. Signed-off-by: David S. Miller Signed-off-by: Paul Mundt --- include/linux/svga.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/svga.h b/include/linux/svga.h index 95d39412a3c2..8ca81e0b0a6c 100644 --- a/include/linux/svga.h +++ b/include/linux/svga.h @@ -96,7 +96,7 @@ static inline int svga_primary_device(struct pci_dev *dev) } -void svga_wcrt_multi(const struct vga_regset *regset, u32 value); +void svga_wcrt_multi(void __iomem *regbase, const struct vga_regset *regset, u32 value); void svga_wseq_multi(const struct vga_regset *regset, u32 value); void svga_set_default_gfx_regs(void); -- cgit v1.2.3 From dc6aff3a5d3e4f565cb07cd5f3b6983850971da7 Mon Sep 17 00:00:00 2001 From: David Miller Date: Tue, 11 Jan 2011 23:49:49 +0000 Subject: svga: Make svga_wseq_multi take an iomem regbase pointer. Signed-off-by: David S. Miller Signed-off-by: Paul Mundt --- include/linux/svga.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/svga.h b/include/linux/svga.h index 8ca81e0b0a6c..357e2bdac9aa 100644 --- a/include/linux/svga.h +++ b/include/linux/svga.h @@ -97,7 +97,7 @@ static inline int svga_primary_device(struct pci_dev *dev) void svga_wcrt_multi(void __iomem *regbase, const struct vga_regset *regset, u32 value); -void svga_wseq_multi(const struct vga_regset *regset, u32 value); +void svga_wseq_multi(void __iomem *regbase, const struct vga_regset *regset, u32 value); void svga_set_default_gfx_regs(void); void svga_set_default_atc_regs(void); -- cgit v1.2.3 From e2fade2c146ec718796049104b45267ddbfdf7a1 Mon Sep 17 00:00:00 2001 From: David Miller Date: Tue, 11 Jan 2011 23:50:04 +0000 Subject: svga: Make svga_set_default_gfx_regs take an iomem regbase pointer. Signed-off-by: David S. Miller Signed-off-by: Paul Mundt --- include/linux/svga.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/svga.h b/include/linux/svga.h index 357e2bdac9aa..4591032247f2 100644 --- a/include/linux/svga.h +++ b/include/linux/svga.h @@ -99,7 +99,7 @@ static inline int svga_primary_device(struct pci_dev *dev) void svga_wcrt_multi(void __iomem *regbase, const struct vga_regset *regset, u32 value); void svga_wseq_multi(void __iomem *regbase, const struct vga_regset *regset, u32 value); -void svga_set_default_gfx_regs(void); +void svga_set_default_gfx_regs(void __iomem *regbase); void svga_set_default_atc_regs(void); void svga_set_default_seq_regs(void); void svga_set_default_crt_regs(void); -- cgit v1.2.3 From f51a14dded14457e45b1f026a6af5ca6a51e4502 Mon Sep 17 00:00:00 2001 From: David Miller Date: Tue, 11 Jan 2011 23:50:36 +0000 Subject: svga: Make svga_set_default_atc_regs take an iomem regbase pointer. Signed-off-by: David S. Miller Signed-off-by: Paul Mundt --- include/linux/svga.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/svga.h b/include/linux/svga.h index 4591032247f2..87a41641caeb 100644 --- a/include/linux/svga.h +++ b/include/linux/svga.h @@ -100,7 +100,7 @@ void svga_wcrt_multi(void __iomem *regbase, const struct vga_regset *regset, u32 void svga_wseq_multi(void __iomem *regbase, const struct vga_regset *regset, u32 value); void svga_set_default_gfx_regs(void __iomem *regbase); -void svga_set_default_atc_regs(void); +void svga_set_default_atc_regs(void __iomem *regbase); void svga_set_default_seq_regs(void); void svga_set_default_crt_regs(void); void svga_set_textmode_vga_regs(void); -- cgit v1.2.3 From a4ade83948e0ffc317b8227d92107271a0acdda5 Mon Sep 17 00:00:00 2001 From: David Miller Date: Tue, 11 Jan 2011 23:50:54 +0000 Subject: svga: Make svga_set_default_seq_regs take an iomem regbase pointer. Signed-off-by: David S. Miller Signed-off-by: Paul Mundt --- include/linux/svga.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/svga.h b/include/linux/svga.h index 87a41641caeb..d31a39844019 100644 --- a/include/linux/svga.h +++ b/include/linux/svga.h @@ -101,7 +101,7 @@ void svga_wseq_multi(void __iomem *regbase, const struct vga_regset *regset, u32 void svga_set_default_gfx_regs(void __iomem *regbase); void svga_set_default_atc_regs(void __iomem *regbase); -void svga_set_default_seq_regs(void); +void svga_set_default_seq_regs(void __iomem *regbase); void svga_set_default_crt_regs(void); void svga_set_textmode_vga_regs(void); -- cgit v1.2.3 From d907ec04cc498e11e039e0fff8eb58cf01e885da Mon Sep 17 00:00:00 2001 From: David Miller Date: Tue, 11 Jan 2011 23:51:08 +0000 Subject: svga: Make svga_wseq_mask() take an iomem regbase pointer. Signed-off-by: David S. Miller Signed-off-by: Paul Mundt --- include/linux/svga.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/svga.h b/include/linux/svga.h index d31a39844019..93f7777b268a 100644 --- a/include/linux/svga.h +++ b/include/linux/svga.h @@ -76,9 +76,9 @@ static inline void svga_wattr(void __iomem *regbase, u8 index, u8 data) /* Write a value to a sequence register with a mask */ -static inline void svga_wseq_mask(u8 index, u8 data, u8 mask) +static inline void svga_wseq_mask(void __iomem *regbase, u8 index, u8 data, u8 mask) { - vga_wseq(NULL, index, (data & mask) | (vga_rseq(NULL, index) & ~mask)); + vga_wseq(regbase, index, (data & mask) | (vga_rseq(regbase, index) & ~mask)); } /* Write a value to a CRT register with a mask */ -- cgit v1.2.3 From ea770789dce2d27afab39c3891a475624acbd82f Mon Sep 17 00:00:00 2001 From: David Miller Date: Tue, 11 Jan 2011 23:51:26 +0000 Subject: svga: Make svga_wcrt_mask() take an iomem regbase pointer. Signed-off-by: David S. Miller Signed-off-by: Paul Mundt --- include/linux/svga.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/svga.h b/include/linux/svga.h index 93f7777b268a..5c5b41bddee4 100644 --- a/include/linux/svga.h +++ b/include/linux/svga.h @@ -83,9 +83,9 @@ static inline void svga_wseq_mask(void __iomem *regbase, u8 index, u8 data, u8 m /* Write a value to a CRT register with a mask */ -static inline void svga_wcrt_mask(u8 index, u8 data, u8 mask) +static inline void svga_wcrt_mask(void __iomem *regbase, u8 index, u8 data, u8 mask) { - vga_wcrt(NULL, index, (data & mask) | (vga_rcrt(NULL, index) & ~mask)); + vga_wcrt(regbase, index, (data & mask) | (vga_rcrt(regbase, index) & ~mask)); } static inline int svga_primary_device(struct pci_dev *dev) -- cgit v1.2.3 From 1d28fcadb0e277844ebffb528cdfd25d44591035 Mon Sep 17 00:00:00 2001 From: David Miller Date: Tue, 11 Jan 2011 23:51:41 +0000 Subject: svga: Make svga_set_default_crt_regs() take an iomem regbase pointer. Signed-off-by: David S. Miller Signed-off-by: Paul Mundt --- include/linux/svga.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/svga.h b/include/linux/svga.h index 5c5b41bddee4..2a32dd55d1a0 100644 --- a/include/linux/svga.h +++ b/include/linux/svga.h @@ -102,7 +102,7 @@ void svga_wseq_multi(void __iomem *regbase, const struct vga_regset *regset, u32 void svga_set_default_gfx_regs(void __iomem *regbase); void svga_set_default_atc_regs(void __iomem *regbase); void svga_set_default_seq_regs(void __iomem *regbase); -void svga_set_default_crt_regs(void); +void svga_set_default_crt_regs(void __iomem *regbase); void svga_set_textmode_vga_regs(void); void svga_settile(struct fb_info *info, struct fb_tilemap *map); -- cgit v1.2.3 From 9c96394bb90f855d265116f37897294fa1bdb072 Mon Sep 17 00:00:00 2001 From: David Miller Date: Tue, 11 Jan 2011 23:51:56 +0000 Subject: svga: Make svga_set_textmode_vga_regs() take an iomem regbase pointer. Signed-off-by: David S. Miller Signed-off-by: Paul Mundt --- include/linux/svga.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/svga.h b/include/linux/svga.h index 2a32dd55d1a0..767937d362d1 100644 --- a/include/linux/svga.h +++ b/include/linux/svga.h @@ -103,7 +103,7 @@ void svga_set_default_gfx_regs(void __iomem *regbase); void svga_set_default_atc_regs(void __iomem *regbase); void svga_set_default_seq_regs(void __iomem *regbase); void svga_set_default_crt_regs(void __iomem *regbase); -void svga_set_textmode_vga_regs(void); +void svga_set_textmode_vga_regs(void __iomem *regbase); void svga_settile(struct fb_info *info, struct fb_tilemap *map); void svga_tilecopy(struct fb_info *info, struct fb_tilearea *area); -- cgit v1.2.3 From 55db092388455457791cf00216b6b3965a8071f8 Mon Sep 17 00:00:00 2001 From: David Miller Date: Tue, 11 Jan 2011 23:52:11 +0000 Subject: svga: Make svga_tilecursor() take an iomem regbase pointer. Signed-off-by: David S. Miller Signed-off-by: Paul Mundt --- include/linux/svga.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/svga.h b/include/linux/svga.h index 767937d362d1..87879500f75b 100644 --- a/include/linux/svga.h +++ b/include/linux/svga.h @@ -109,7 +109,7 @@ void svga_settile(struct fb_info *info, struct fb_tilemap *map); void svga_tilecopy(struct fb_info *info, struct fb_tilearea *area); void svga_tilefill(struct fb_info *info, struct fb_tilerect *rect); void svga_tileblit(struct fb_info *info, struct fb_tileblit *blit); -void svga_tilecursor(struct fb_info *info, struct fb_tilecursor *cursor); +void svga_tilecursor(void __iomem *regbase, struct fb_info *info, struct fb_tilecursor *cursor); int svga_get_tilemax(struct fb_info *info); void svga_get_caps(struct fb_info *info, struct fb_blit_caps *caps, struct fb_var_screeninfo *var); -- cgit v1.2.3 From 38d2620ea40c2f9a5f17d6488bf004973570279c Mon Sep 17 00:00:00 2001 From: David Miller Date: Tue, 11 Jan 2011 23:52:25 +0000 Subject: svga: Make svga_set_timings() take an iomem regbase pointer. Signed-off-by: David S. Miller Signed-off-by: Paul Mundt --- include/linux/svga.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/svga.h b/include/linux/svga.h index 87879500f75b..bfa68e837d6a 100644 --- a/include/linux/svga.h +++ b/include/linux/svga.h @@ -116,7 +116,7 @@ void svga_get_caps(struct fb_info *info, struct fb_blit_caps *caps, int svga_compute_pll(const struct svga_pll *pll, u32 f_wanted, u16 *m, u16 *n, u16 *r, int node); int svga_check_timings(const struct svga_timing_regs *tm, struct fb_var_screeninfo *var, int node); -void svga_set_timings(const struct svga_timing_regs *tm, struct fb_var_screeninfo *var, u32 hmul, u32 hdiv, u32 vmul, u32 vdiv, u32 hborder, int node); +void svga_set_timings(void __iomem *regbase, const struct svga_timing_regs *tm, struct fb_var_screeninfo *var, u32 hmul, u32 hdiv, u32 vmul, u32 vdiv, u32 hborder, int node); int svga_match_format(const struct svga_fb_format *frm, struct fb_var_screeninfo *var, struct fb_fix_screeninfo *fix); -- cgit v1.2.3 From 1e9bb8808ac11094d711d20d580e7b45a4992d0c Mon Sep 17 00:00:00 2001 From: Shaohua Li Date: Tue, 22 Mar 2011 08:35:35 +0100 Subject: block: fix non-atomic access to genhd inflight structures After the stack plugging introduction, these are called lockless. Ensure that the counters are updated atomically. Signed-off-by: Shaohua Li Signed-off-by: Jens Axboe --- include/linux/genhd.h | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/genhd.h b/include/linux/genhd.h index c0d5f6945c1e..d764a426e9fd 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -109,7 +109,7 @@ struct hd_struct { int make_it_fail; #endif unsigned long stamp; - int in_flight[2]; + atomic_t in_flight[2]; #ifdef CONFIG_SMP struct disk_stats __percpu *dkstats; #else @@ -370,21 +370,21 @@ static inline void free_part_stats(struct hd_struct *part) static inline void part_inc_in_flight(struct hd_struct *part, int rw) { - part->in_flight[rw]++; + atomic_inc(&part->in_flight[rw]); if (part->partno) - part_to_disk(part)->part0.in_flight[rw]++; + atomic_inc(&part_to_disk(part)->part0.in_flight[rw]); } static inline void part_dec_in_flight(struct hd_struct *part, int rw) { - part->in_flight[rw]--; + atomic_dec(&part->in_flight[rw]); if (part->partno) - part_to_disk(part)->part0.in_flight[rw]--; + atomic_dec(&part_to_disk(part)->part0.in_flight[rw]); } static inline int part_in_flight(struct hd_struct *part) { - return part->in_flight[0] + part->in_flight[1]; + return atomic_read(&part->in_flight[0]) + atomic_read(&part->in_flight[1]); } static inline struct partition_meta_info *alloc_part_info(struct gendisk *disk) -- cgit v1.2.3 From 140d88165c25137e871f9559e67986ed89251105 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Wed, 18 Aug 2010 11:41:22 -0300 Subject: [media] media: Media device information query Create the following ioctl and implement it at the media device level to query device information. - MEDIA_IOC_DEVICE_INFO: Query media device information The ioctl and its data structure are defined in the new kernel header linux/media.h available to userspace applications. Signed-off-by: Laurent Pinchart Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- include/linux/Kbuild | 1 + include/linux/media.h | 45 +++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 46 insertions(+) create mode 100644 include/linux/media.h (limited to 'include/linux') diff --git a/include/linux/Kbuild b/include/linux/Kbuild index b0ada6f37dd6..31eb174a2267 100644 --- a/include/linux/Kbuild +++ b/include/linux/Kbuild @@ -233,6 +233,7 @@ header-y += magic.h header-y += major.h header-y += map_to_7segment.h header-y += matroxfb.h +header-y += media.h header-y += mempolicy.h header-y += meye.h header-y += mii.h diff --git a/include/linux/media.h b/include/linux/media.h new file mode 100644 index 000000000000..64090db3c1fc --- /dev/null +++ b/include/linux/media.h @@ -0,0 +1,45 @@ +/* + * Multimedia device API + * + * Copyright (C) 2010 Nokia Corporation + * + * Contacts: Laurent Pinchart + * Sakari Ailus + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#ifndef __LINUX_MEDIA_H +#define __LINUX_MEDIA_H + +#include +#include +#include + +#define MEDIA_API_VERSION KERNEL_VERSION(0, 1, 0) + +struct media_device_info { + char driver[16]; + char model[32]; + char serial[40]; + char bus_info[32]; + __u32 media_version; + __u32 hw_revision; + __u32 driver_version; + __u32 reserved[31]; +}; + +#define MEDIA_IOC_DEVICE_INFO _IOWR('M', 1, struct media_device_info) + +#endif /* __LINUX_MEDIA_H */ -- cgit v1.2.3 From 1651333b09743887bc2dd3d158a11853a2be3fe7 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Wed, 9 Dec 2009 08:40:01 -0300 Subject: [media] media: Entities, pads and links enumeration Create the following two ioctls and implement them at the media device level to enumerate entities, pads and links. - MEDIA_IOC_ENUM_ENTITIES: Enumerate entities and their properties - MEDIA_IOC_ENUM_LINKS: Enumerate all pads and links for a given entity Entity IDs can be non-contiguous. Userspace applications should enumerate entities using the MEDIA_ENT_ID_FLAG_NEXT flag. When the flag is set in the entity ID, the MEDIA_IOC_ENUM_ENTITIES will return the next entity with an ID bigger than the requested one. Only forward links that originate at one of the entity's source pads are returned during the enumeration process. Signed-off-by: Laurent Pinchart Signed-off-by: Sakari Ailus Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- include/linux/media.h | 85 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 85 insertions(+) (limited to 'include/linux') diff --git a/include/linux/media.h b/include/linux/media.h index 64090db3c1fc..17c93a413677 100644 --- a/include/linux/media.h +++ b/include/linux/media.h @@ -40,6 +40,91 @@ struct media_device_info { __u32 reserved[31]; }; +#define MEDIA_ENT_ID_FLAG_NEXT (1 << 31) + +#define MEDIA_ENT_TYPE_SHIFT 16 +#define MEDIA_ENT_TYPE_MASK 0x00ff0000 +#define MEDIA_ENT_SUBTYPE_MASK 0x0000ffff + +#define MEDIA_ENT_T_DEVNODE (1 << MEDIA_ENT_TYPE_SHIFT) +#define MEDIA_ENT_T_DEVNODE_V4L (MEDIA_ENT_T_DEVNODE + 1) +#define MEDIA_ENT_T_DEVNODE_FB (MEDIA_ENT_T_DEVNODE + 2) +#define MEDIA_ENT_T_DEVNODE_ALSA (MEDIA_ENT_T_DEVNODE + 3) +#define MEDIA_ENT_T_DEVNODE_DVB (MEDIA_ENT_T_DEVNODE + 4) + +#define MEDIA_ENT_T_V4L2_SUBDEV (2 << MEDIA_ENT_TYPE_SHIFT) +#define MEDIA_ENT_T_V4L2_SUBDEV_SENSOR (MEDIA_ENT_T_V4L2_SUBDEV + 1) +#define MEDIA_ENT_T_V4L2_SUBDEV_FLASH (MEDIA_ENT_T_V4L2_SUBDEV + 2) +#define MEDIA_ENT_T_V4L2_SUBDEV_LENS (MEDIA_ENT_T_V4L2_SUBDEV + 3) + +#define MEDIA_ENT_FL_DEFAULT (1 << 0) + +struct media_entity_desc { + __u32 id; + char name[32]; + __u32 type; + __u32 revision; + __u32 flags; + __u32 group_id; + __u16 pads; + __u16 links; + + __u32 reserved[4]; + + union { + /* Node specifications */ + struct { + __u32 major; + __u32 minor; + } v4l; + struct { + __u32 major; + __u32 minor; + } fb; + struct { + __u32 card; + __u32 device; + __u32 subdevice; + } alsa; + int dvb; + + /* Sub-device specifications */ + /* Nothing needed yet */ + __u8 raw[184]; + }; +}; + +#define MEDIA_PAD_FL_SINK (1 << 0) +#define MEDIA_PAD_FL_SOURCE (1 << 1) + +struct media_pad_desc { + __u32 entity; /* entity ID */ + __u16 index; /* pad index */ + __u32 flags; /* pad flags */ + __u32 reserved[2]; +}; + +#define MEDIA_LNK_FL_ENABLED (1 << 0) +#define MEDIA_LNK_FL_IMMUTABLE (1 << 1) + +struct media_link_desc { + struct media_pad_desc source; + struct media_pad_desc sink; + __u32 flags; + __u32 reserved[2]; +}; + +struct media_links_enum { + __u32 entity; + /* Should have enough room for pads elements */ + struct media_pad_desc __user *pads; + /* Should have enough room for links elements */ + struct media_link_desc __user *links; + __u32 reserved[4]; +}; + #define MEDIA_IOC_DEVICE_INFO _IOWR('M', 1, struct media_device_info) +#define MEDIA_IOC_ENUM_ENTITIES _IOWR('M', 2, struct media_entity_desc) +#define MEDIA_IOC_ENUM_LINKS _IOWR('M', 3, struct media_links_enum) #endif /* __LINUX_MEDIA_H */ -- cgit v1.2.3 From 97548ed4c4661502cdfd1aabd5d3876fa4f5cc2e Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Wed, 9 Dec 2009 08:40:03 -0300 Subject: [media] media: Links setup Create the following ioctl and implement it at the media device level to setup links. - MEDIA_IOC_SETUP_LINK: Modify the properties of a given link The only property that can currently be modified is the ENABLED link flag to enable/disable a link. Links marked with the IMMUTABLE link flag can not be enabled or disabled. Enabling or disabling a link has effects on entities' use count. Those changes are automatically propagated through the graph. Signed-off-by: Laurent Pinchart Signed-off-by: Stanimir Varbanov Signed-off-by: Sakari Ailus Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- include/linux/media.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/media.h b/include/linux/media.h index 17c93a413677..7c69913c0ad2 100644 --- a/include/linux/media.h +++ b/include/linux/media.h @@ -126,5 +126,6 @@ struct media_links_enum { #define MEDIA_IOC_DEVICE_INFO _IOWR('M', 1, struct media_device_info) #define MEDIA_IOC_ENUM_ENTITIES _IOWR('M', 2, struct media_entity_desc) #define MEDIA_IOC_ENUM_LINKS _IOWR('M', 3, struct media_links_enum) +#define MEDIA_IOC_SETUP_LINK _IOWR('M', 4, struct media_link_desc) #endif /* __LINUX_MEDIA_H */ -- cgit v1.2.3 From e02188c90f6ef61f0844c42508fe603c5d4fa42b Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Wed, 25 Aug 2010 09:00:41 -0300 Subject: [media] media: Pipelines and media streams Drivers often need to associate pipeline objects to entities, and to take stream state into account when configuring entities and links. The pipeline API helps drivers manage that information. When starting streaming, drivers call media_entity_pipeline_start(). The function marks all entities connected to the given entity through enabled links, either directly or indirectly, as streaming. Similarly, when stopping the stream, drivers call media_entity_pipeline_stop(). The media_entity_pipeline_start() function takes a pointer to a media pipeline and stores it in every entity in the graph. Drivers should embed the media_pipeline structure in higher-level pipeline structures and can then access the pipeline through the media_entity structure. Link configuration will fail with -EBUSY by default if either end of the link is a streaming entity, unless the link is marked with the MEDIA_LNK_FL_DYNAMIC flag. Signed-off-by: Laurent Pinchart Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- include/linux/media.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/media.h b/include/linux/media.h index 7c69913c0ad2..7ed23b43f43b 100644 --- a/include/linux/media.h +++ b/include/linux/media.h @@ -106,6 +106,7 @@ struct media_pad_desc { #define MEDIA_LNK_FL_ENABLED (1 << 0) #define MEDIA_LNK_FL_IMMUTABLE (1 << 1) +#define MEDIA_LNK_FL_DYNAMIC (1 << 2) struct media_link_desc { struct media_pad_desc source; -- cgit v1.2.3 From 2ef2d5a336891ee38fee7c7ad2396e31ac9d8aaa Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Mon, 15 Mar 2010 19:33:31 -0300 Subject: [media] v4l: Move the media/v4l2-mediabus.h header to include/linux The header defines the v4l2_mbus_framefmt structure which will be used by the V4L2 subdevs userspace API. Change the type of the v4l2_mbus_framefmt::code field to __u32, as enum sizes can differ between different ABIs on the same architectures. Signed-off-by: Laurent Pinchart Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- include/linux/Kbuild | 1 + include/linux/v4l2-mediabus.h | 78 +++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 79 insertions(+) create mode 100644 include/linux/v4l2-mediabus.h (limited to 'include/linux') diff --git a/include/linux/Kbuild b/include/linux/Kbuild index 31eb174a2267..c33f22a6a404 100644 --- a/include/linux/Kbuild +++ b/include/linux/Kbuild @@ -371,6 +371,7 @@ header-y += unistd.h header-y += usbdevice_fs.h header-y += utime.h header-y += utsname.h +header-y += v4l2-mediabus.h header-y += veth.h header-y += vhost.h header-y += videodev2.h diff --git a/include/linux/v4l2-mediabus.h b/include/linux/v4l2-mediabus.h new file mode 100644 index 000000000000..a62cd64e8462 --- /dev/null +++ b/include/linux/v4l2-mediabus.h @@ -0,0 +1,78 @@ +/* + * Media Bus API header + * + * Copyright (C) 2009, Guennadi Liakhovetski + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __LINUX_V4L2_MEDIABUS_H +#define __LINUX_V4L2_MEDIABUS_H + +#include +#include + +/* + * These pixel codes uniquely identify data formats on the media bus. Mostly + * they correspond to similarly named V4L2_PIX_FMT_* formats, format 0 is + * reserved, V4L2_MBUS_FMT_FIXED shall be used by host-client pairs, where the + * data format is fixed. Additionally, "2X8" means that one pixel is transferred + * in two 8-bit samples, "BE" or "LE" specify in which order those samples are + * transferred over the bus: "LE" means that the least significant bits are + * transferred first, "BE" means that the most significant bits are transferred + * first, and "PADHI" and "PADLO" define which bits - low or high, in the + * incomplete high byte, are filled with padding bits. + */ +enum v4l2_mbus_pixelcode { + V4L2_MBUS_FMT_FIXED = 1, + V4L2_MBUS_FMT_YUYV8_2X8, + V4L2_MBUS_FMT_YVYU8_2X8, + V4L2_MBUS_FMT_UYVY8_2X8, + V4L2_MBUS_FMT_VYUY8_2X8, + V4L2_MBUS_FMT_YVYU10_2X10, + V4L2_MBUS_FMT_YUYV10_2X10, + V4L2_MBUS_FMT_YVYU10_1X20, + V4L2_MBUS_FMT_YUYV10_1X20, + V4L2_MBUS_FMT_RGB444_2X8_PADHI_LE, + V4L2_MBUS_FMT_RGB444_2X8_PADHI_BE, + V4L2_MBUS_FMT_RGB555_2X8_PADHI_LE, + V4L2_MBUS_FMT_RGB555_2X8_PADHI_BE, + V4L2_MBUS_FMT_RGB565_2X8_LE, + V4L2_MBUS_FMT_RGB565_2X8_BE, + V4L2_MBUS_FMT_BGR565_2X8_LE, + V4L2_MBUS_FMT_BGR565_2X8_BE, + V4L2_MBUS_FMT_SBGGR8_1X8, + V4L2_MBUS_FMT_SBGGR10_1X10, + V4L2_MBUS_FMT_GREY8_1X8, + V4L2_MBUS_FMT_Y10_1X10, + V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE, + V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_LE, + V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_BE, + V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_BE, + V4L2_MBUS_FMT_SGRBG8_1X8, + V4L2_MBUS_FMT_SBGGR12_1X12, + V4L2_MBUS_FMT_YUYV8_1_5X8, + V4L2_MBUS_FMT_YVYU8_1_5X8, + V4L2_MBUS_FMT_UYVY8_1_5X8, + V4L2_MBUS_FMT_VYUY8_1_5X8, +}; + +/** + * struct v4l2_mbus_framefmt - frame format on the media bus + * @width: frame width + * @height: frame height + * @code: data format code + * @field: used interlacing type + * @colorspace: colorspace of the data + */ +struct v4l2_mbus_framefmt { + __u32 width; + __u32 height; + __u32 code; + enum v4l2_field field; + enum v4l2_colorspace colorspace; +}; + +#endif -- cgit v1.2.3 From 84d0688dfc7eedb2147532bf52ff7073d5c3c7b9 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Wed, 6 Oct 2010 03:30:26 -0300 Subject: [media] v4l: Replace enums with fixed-sized fields in public structure The v4l2_mbus_framefmt structure will be part of the public userspace API and used (albeit indirectly) as an ioctl argument. As such, its size must be fixed across userspace ABIs. Replace the v4l2_field and v4l2_colorspace enums by __u32 fields and add padding for future enhancements. Signed-off-by: Laurent Pinchart Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- include/linux/v4l2-mediabus.h | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) (limited to 'include/linux') diff --git a/include/linux/v4l2-mediabus.h b/include/linux/v4l2-mediabus.h index a62cd64e8462..feeb88cf705e 100644 --- a/include/linux/v4l2-mediabus.h +++ b/include/linux/v4l2-mediabus.h @@ -63,16 +63,17 @@ enum v4l2_mbus_pixelcode { * struct v4l2_mbus_framefmt - frame format on the media bus * @width: frame width * @height: frame height - * @code: data format code - * @field: used interlacing type - * @colorspace: colorspace of the data + * @code: data format code (from enum v4l2_mbus_pixelcode) + * @field: used interlacing type (from enum v4l2_field) + * @colorspace: colorspace of the data (from enum v4l2_colorspace) */ struct v4l2_mbus_framefmt { - __u32 width; - __u32 height; - __u32 code; - enum v4l2_field field; - enum v4l2_colorspace colorspace; + __u32 width; + __u32 height; + __u32 code; + __u32 field; + __u32 colorspace; + __u32 reserved[7]; }; #endif -- cgit v1.2.3 From 076704332ca6da550cbc279918ef8b88b4ac1e45 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Tue, 28 Sep 2010 07:01:44 -0300 Subject: [media] v4l: Rename V4L2_MBUS_FMT_GREY8_1X8 to V4L2_MBUS_FMT_Y8_1X8 For consistency with the V4L2_MBUS_FMT_Y10_1X10 format. Signed-off-by: Laurent Pinchart Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- include/linux/v4l2-mediabus.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/v4l2-mediabus.h b/include/linux/v4l2-mediabus.h index feeb88cf705e..dc1d5c0432d4 100644 --- a/include/linux/v4l2-mediabus.h +++ b/include/linux/v4l2-mediabus.h @@ -45,7 +45,7 @@ enum v4l2_mbus_pixelcode { V4L2_MBUS_FMT_BGR565_2X8_BE, V4L2_MBUS_FMT_SBGGR8_1X8, V4L2_MBUS_FMT_SBGGR10_1X10, - V4L2_MBUS_FMT_GREY8_1X8, + V4L2_MBUS_FMT_Y8_1X8, V4L2_MBUS_FMT_Y10_1X10, V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE, V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_LE, -- cgit v1.2.3 From dacdde78b39e49edf2f7af85be4b613978280b26 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Wed, 1 Sep 2010 12:58:22 -0300 Subject: [media] v4l: Group media bus pixel codes by types and sort them alphabetically Adding new pixel codes at the end of the enumeration will soon create a mess, so group the pixel codes by type and sort them by bus_width, bits per component, samples per pixel and order of subsamples. As the codes are part of the kernel ABI their value can't change when a new code is inserted in the enumeration, so they are given an explicit numerical value. When inserting a new pixel code developers must use and update the next free value. Signed-off-by: Laurent Pinchart Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- include/linux/v4l2-mediabus.h | 77 ++++++++++++++++++++++++++----------------- 1 file changed, 46 insertions(+), 31 deletions(-) (limited to 'include/linux') diff --git a/include/linux/v4l2-mediabus.h b/include/linux/v4l2-mediabus.h index dc1d5c0432d4..cccfa34bab1f 100644 --- a/include/linux/v4l2-mediabus.h +++ b/include/linux/v4l2-mediabus.h @@ -24,39 +24,54 @@ * transferred first, "BE" means that the most significant bits are transferred * first, and "PADHI" and "PADLO" define which bits - low or high, in the * incomplete high byte, are filled with padding bits. + * + * The pixel codes are grouped by type, bus_width, bits per component, samples + * per pixel and order of subsamples. Numerical values are sorted using generic + * numerical sort order (8 thus comes before 10). + * + * As their value can't change when a new pixel code is inserted in the + * enumeration, the pixel codes are explicitly given a numerical value. The next + * free values for each category are listed below, update them when inserting + * new pixel codes. */ enum v4l2_mbus_pixelcode { - V4L2_MBUS_FMT_FIXED = 1, - V4L2_MBUS_FMT_YUYV8_2X8, - V4L2_MBUS_FMT_YVYU8_2X8, - V4L2_MBUS_FMT_UYVY8_2X8, - V4L2_MBUS_FMT_VYUY8_2X8, - V4L2_MBUS_FMT_YVYU10_2X10, - V4L2_MBUS_FMT_YUYV10_2X10, - V4L2_MBUS_FMT_YVYU10_1X20, - V4L2_MBUS_FMT_YUYV10_1X20, - V4L2_MBUS_FMT_RGB444_2X8_PADHI_LE, - V4L2_MBUS_FMT_RGB444_2X8_PADHI_BE, - V4L2_MBUS_FMT_RGB555_2X8_PADHI_LE, - V4L2_MBUS_FMT_RGB555_2X8_PADHI_BE, - V4L2_MBUS_FMT_RGB565_2X8_LE, - V4L2_MBUS_FMT_RGB565_2X8_BE, - V4L2_MBUS_FMT_BGR565_2X8_LE, - V4L2_MBUS_FMT_BGR565_2X8_BE, - V4L2_MBUS_FMT_SBGGR8_1X8, - V4L2_MBUS_FMT_SBGGR10_1X10, - V4L2_MBUS_FMT_Y8_1X8, - V4L2_MBUS_FMT_Y10_1X10, - V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE, - V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_LE, - V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_BE, - V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_BE, - V4L2_MBUS_FMT_SGRBG8_1X8, - V4L2_MBUS_FMT_SBGGR12_1X12, - V4L2_MBUS_FMT_YUYV8_1_5X8, - V4L2_MBUS_FMT_YVYU8_1_5X8, - V4L2_MBUS_FMT_UYVY8_1_5X8, - V4L2_MBUS_FMT_VYUY8_1_5X8, + V4L2_MBUS_FMT_FIXED = 0x0001, + + /* RGB - next is 0x1009 */ + V4L2_MBUS_FMT_RGB444_2X8_PADHI_BE = 0x1001, + V4L2_MBUS_FMT_RGB444_2X8_PADHI_LE = 0x1002, + V4L2_MBUS_FMT_RGB555_2X8_PADHI_BE = 0x1003, + V4L2_MBUS_FMT_RGB555_2X8_PADHI_LE = 0x1004, + V4L2_MBUS_FMT_BGR565_2X8_BE = 0x1005, + V4L2_MBUS_FMT_BGR565_2X8_LE = 0x1006, + V4L2_MBUS_FMT_RGB565_2X8_BE = 0x1007, + V4L2_MBUS_FMT_RGB565_2X8_LE = 0x1008, + + /* YUV (including grey) - next is 0x200f */ + V4L2_MBUS_FMT_Y8_1X8 = 0x2001, + V4L2_MBUS_FMT_UYVY8_1_5X8 = 0x2002, + V4L2_MBUS_FMT_VYUY8_1_5X8 = 0x2003, + V4L2_MBUS_FMT_YUYV8_1_5X8 = 0x2004, + V4L2_MBUS_FMT_YVYU8_1_5X8 = 0x2005, + V4L2_MBUS_FMT_UYVY8_2X8 = 0x2006, + V4L2_MBUS_FMT_VYUY8_2X8 = 0x2007, + V4L2_MBUS_FMT_YUYV8_2X8 = 0x2008, + V4L2_MBUS_FMT_YVYU8_2X8 = 0x2009, + V4L2_MBUS_FMT_Y10_1X10 = 0x200a, + V4L2_MBUS_FMT_YUYV10_2X10 = 0x200b, + V4L2_MBUS_FMT_YVYU10_2X10 = 0x200c, + V4L2_MBUS_FMT_YUYV10_1X20 = 0x200d, + V4L2_MBUS_FMT_YVYU10_1X20 = 0x200e, + + /* Bayer - next is 0x3009 */ + V4L2_MBUS_FMT_SBGGR8_1X8 = 0x3001, + V4L2_MBUS_FMT_SGRBG8_1X8 = 0x3002, + V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_BE = 0x3003, + V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE = 0x3004, + V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_BE = 0x3005, + V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_LE = 0x3006, + V4L2_MBUS_FMT_SBGGR10_1X10 = 0x3007, + V4L2_MBUS_FMT_SBGGR12_1X12 = 0x3008, }; /** -- cgit v1.2.3 From 333c8b97785d5afd5085ba3720b4d259623290f6 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Mon, 15 Mar 2010 20:26:04 -0300 Subject: [media] v4l: v4l2_subdev userspace format API Add a userspace API to get, set and enumerate the media format on a subdev pad. The format at the output of a subdev usually depends on the format at its input(s). The try format operation is thus not suitable for probing format at individual pads, as it can't modify the device state and thus can't remember the format tried at the input to compute the output format. To fix the problem, pass an extra argument to the get/set format operations to select the 'try' or 'active' format. The try format is used when probing the subdev. Setting the try format must not change the device configuration but can store data for later reuse. Data storage is provided at the file-handle level so applications probing the subdev concurently won't interfere with each other. The active format is used when configuring the subdev. It's identical to the format handled by the usual get/set operations. Signed-off-by: Laurent Pinchart Signed-off-by: Stanimir Varbanov Signed-off-by: Sakari Ailus Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- include/linux/Kbuild | 1 + include/linux/v4l2-subdev.h | 90 +++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 91 insertions(+) create mode 100644 include/linux/v4l2-subdev.h (limited to 'include/linux') diff --git a/include/linux/Kbuild b/include/linux/Kbuild index c33f22a6a404..43918a34db9f 100644 --- a/include/linux/Kbuild +++ b/include/linux/Kbuild @@ -372,6 +372,7 @@ header-y += usbdevice_fs.h header-y += utime.h header-y += utsname.h header-y += v4l2-mediabus.h +header-y += v4l2-subdev.h header-y += veth.h header-y += vhost.h header-y += videodev2.h diff --git a/include/linux/v4l2-subdev.h b/include/linux/v4l2-subdev.h new file mode 100644 index 000000000000..8dbb44873821 --- /dev/null +++ b/include/linux/v4l2-subdev.h @@ -0,0 +1,90 @@ +/* + * V4L2 subdev userspace API + * + * Copyright (C) 2010 Nokia Corporation + * + * Contacts: Laurent Pinchart + * Sakari Ailus + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#ifndef __LINUX_V4L2_SUBDEV_H +#define __LINUX_V4L2_SUBDEV_H + +#include +#include +#include + +/** + * enum v4l2_subdev_format_whence - Media bus format type + * @V4L2_SUBDEV_FORMAT_TRY: try format, for negotiation only + * @V4L2_SUBDEV_FORMAT_ACTIVE: active format, applied to the device + */ +enum v4l2_subdev_format_whence { + V4L2_SUBDEV_FORMAT_TRY = 0, + V4L2_SUBDEV_FORMAT_ACTIVE = 1, +}; + +/** + * struct v4l2_subdev_format - Pad-level media bus format + * @which: format type (from enum v4l2_subdev_format_whence) + * @pad: pad number, as reported by the media API + * @format: media bus format (format code and frame size) + */ +struct v4l2_subdev_format { + __u32 which; + __u32 pad; + struct v4l2_mbus_framefmt format; + __u32 reserved[8]; +}; + +/** + * struct v4l2_subdev_mbus_code_enum - Media bus format enumeration + * @pad: pad number, as reported by the media API + * @index: format index during enumeration + * @code: format code (from enum v4l2_mbus_pixelcode) + */ +struct v4l2_subdev_mbus_code_enum { + __u32 pad; + __u32 index; + __u32 code; + __u32 reserved[9]; +}; + +/** + * struct v4l2_subdev_frame_size_enum - Media bus format enumeration + * @pad: pad number, as reported by the media API + * @index: format index during enumeration + * @code: format code (from enum v4l2_mbus_pixelcode) + */ +struct v4l2_subdev_frame_size_enum { + __u32 index; + __u32 pad; + __u32 code; + __u32 min_width; + __u32 max_width; + __u32 min_height; + __u32 max_height; + __u32 reserved[9]; +}; + +#define VIDIOC_SUBDEV_G_FMT _IOWR('V', 4, struct v4l2_subdev_format) +#define VIDIOC_SUBDEV_S_FMT _IOWR('V', 5, struct v4l2_subdev_format) +#define VIDIOC_SUBDEV_ENUM_MBUS_CODE \ + _IOWR('V', 2, struct v4l2_subdev_mbus_code_enum) +#define VIDIOC_SUBDEV_ENUM_FRAME_SIZE \ + _IOWR('V', 74, struct v4l2_subdev_frame_size_enum) + +#endif -- cgit v1.2.3 From 35c3017a29d278c4405a7f3ab30b814999d156d3 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Wed, 5 May 2010 11:38:35 -0300 Subject: [media] v4l: v4l2_subdev userspace frame interval API The three new ioctl VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL, VIDIOC_SUBDEV_G_FRAME_INTERVAL and VIDIOC_SUBDEV_S_FRAME_INTERVAL can be used to enumerate and configure a subdev's frame rate from userspace. Two new video::g/s_frame_interval subdev operations are introduced to support those ioctls. The existing video::g/s_parm operations are deprecated and shouldn't be used anymore. Signed-off-by: Laurent Pinchart Signed-off-by: Sakari Ailus Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- include/linux/v4l2-subdev.h | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) (limited to 'include/linux') diff --git a/include/linux/v4l2-subdev.h b/include/linux/v4l2-subdev.h index 8dbb44873821..c55f9e9e1dd3 100644 --- a/include/linux/v4l2-subdev.h +++ b/include/linux/v4l2-subdev.h @@ -80,11 +80,47 @@ struct v4l2_subdev_frame_size_enum { __u32 reserved[9]; }; +/** + * struct v4l2_subdev_frame_interval - Pad-level frame rate + * @pad: pad number, as reported by the media API + * @interval: frame interval in seconds + */ +struct v4l2_subdev_frame_interval { + __u32 pad; + struct v4l2_fract interval; + __u32 reserved[9]; +}; + +/** + * struct v4l2_subdev_frame_interval_enum - Frame interval enumeration + * @pad: pad number, as reported by the media API + * @index: frame interval index during enumeration + * @code: format code (from enum v4l2_mbus_pixelcode) + * @width: frame width in pixels + * @height: frame height in pixels + * @interval: frame interval in seconds + */ +struct v4l2_subdev_frame_interval_enum { + __u32 index; + __u32 pad; + __u32 code; + __u32 width; + __u32 height; + struct v4l2_fract interval; + __u32 reserved[9]; +}; + #define VIDIOC_SUBDEV_G_FMT _IOWR('V', 4, struct v4l2_subdev_format) #define VIDIOC_SUBDEV_S_FMT _IOWR('V', 5, struct v4l2_subdev_format) +#define VIDIOC_SUBDEV_G_FRAME_INTERVAL \ + _IOWR('V', 21, struct v4l2_subdev_frame_interval) +#define VIDIOC_SUBDEV_S_FRAME_INTERVAL \ + _IOWR('V', 22, struct v4l2_subdev_frame_interval) #define VIDIOC_SUBDEV_ENUM_MBUS_CODE \ _IOWR('V', 2, struct v4l2_subdev_mbus_code_enum) #define VIDIOC_SUBDEV_ENUM_FRAME_SIZE \ _IOWR('V', 74, struct v4l2_subdev_frame_size_enum) +#define VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL \ + _IOWR('V', 75, struct v4l2_subdev_frame_interval_enum) #endif -- cgit v1.2.3 From f6a5cb1be894468cdc69ec557d47f40c28f64642 Mon Sep 17 00:00:00 2001 From: Antti Koskipaa Date: Wed, 23 Jun 2010 05:03:42 -0300 Subject: [media] v4l: v4l2_subdev userspace crop API This patch adds the VIDIOC_SUBDEV_S_CROP and G_CROP ioctls to the userland API. CROPCAP is not implemented because it's redundant. Signed-off-by: Antti Koskipaa Signed-off-by: Laurent Pinchart Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- include/linux/v4l2-subdev.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'include/linux') diff --git a/include/linux/v4l2-subdev.h b/include/linux/v4l2-subdev.h index c55f9e9e1dd3..ed29cbbebfef 100644 --- a/include/linux/v4l2-subdev.h +++ b/include/linux/v4l2-subdev.h @@ -50,6 +50,19 @@ struct v4l2_subdev_format { __u32 reserved[8]; }; +/** + * struct v4l2_subdev_crop - Pad-level crop settings + * @which: format type (from enum v4l2_subdev_format_whence) + * @pad: pad number, as reported by the media API + * @rect: pad crop rectangle boundaries + */ +struct v4l2_subdev_crop { + __u32 which; + __u32 pad; + struct v4l2_rect rect; + __u32 reserved[8]; +}; + /** * struct v4l2_subdev_mbus_code_enum - Media bus format enumeration * @pad: pad number, as reported by the media API @@ -122,5 +135,7 @@ struct v4l2_subdev_frame_interval_enum { _IOWR('V', 74, struct v4l2_subdev_frame_size_enum) #define VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL \ _IOWR('V', 75, struct v4l2_subdev_frame_interval_enum) +#define VIDIOC_SUBDEV_G_CROP _IOWR('V', 59, struct v4l2_subdev_crop) +#define VIDIOC_SUBDEV_S_CROP _IOWR('V', 60, struct v4l2_subdev_crop) #endif -- cgit v1.2.3 From 2d8deaf6b13e1b00fb65333bac9380b8c318adcf Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Wed, 1 Sep 2010 12:59:36 -0300 Subject: [media] v4l: Add 8-bit YUYV on 16-bit bus and SGRBG10 media bus pixel codes Add the following media bus format code definitions: - V4L2_MBUS_FMT_SGRBG10_1X10 for 10-bit GRBG Bayer - V4L2_MBUS_FMT_SGRBG10_DPCM8_1X8 for 10-bit DPCM compressed GRBG Bayer - V4L2_MBUS_FMT_YUYV16_1X16 for 8-bit YUYV on 16-bit bus - V4L2_MBUS_FMT_UYVY16_1X16 for 8-bit UYVY on 16-bit bus - V4L2_MBUS_FMT_YVYU16_1X16 for 8-bit YVYU on 16-bit bus - V4L2_MBUS_FMT_VYUY16_1X16 for 8-bit VYUY on 16-bit bus Signed-off-by: Laurent Pinchart Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- include/linux/v4l2-mediabus.h | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/v4l2-mediabus.h b/include/linux/v4l2-mediabus.h index cccfa34bab1f..c4caca33e0c6 100644 --- a/include/linux/v4l2-mediabus.h +++ b/include/linux/v4l2-mediabus.h @@ -47,7 +47,7 @@ enum v4l2_mbus_pixelcode { V4L2_MBUS_FMT_RGB565_2X8_BE = 0x1007, V4L2_MBUS_FMT_RGB565_2X8_LE = 0x1008, - /* YUV (including grey) - next is 0x200f */ + /* YUV (including grey) - next is 0x2013 */ V4L2_MBUS_FMT_Y8_1X8 = 0x2001, V4L2_MBUS_FMT_UYVY8_1_5X8 = 0x2002, V4L2_MBUS_FMT_VYUY8_1_5X8 = 0x2003, @@ -60,17 +60,23 @@ enum v4l2_mbus_pixelcode { V4L2_MBUS_FMT_Y10_1X10 = 0x200a, V4L2_MBUS_FMT_YUYV10_2X10 = 0x200b, V4L2_MBUS_FMT_YVYU10_2X10 = 0x200c, + V4L2_MBUS_FMT_UYVY8_1X16 = 0x200f, + V4L2_MBUS_FMT_VYUY8_1X16 = 0x2010, + V4L2_MBUS_FMT_YUYV8_1X16 = 0x2011, + V4L2_MBUS_FMT_YVYU8_1X16 = 0x2012, V4L2_MBUS_FMT_YUYV10_1X20 = 0x200d, V4L2_MBUS_FMT_YVYU10_1X20 = 0x200e, - /* Bayer - next is 0x3009 */ + /* Bayer - next is 0x300b */ V4L2_MBUS_FMT_SBGGR8_1X8 = 0x3001, V4L2_MBUS_FMT_SGRBG8_1X8 = 0x3002, + V4L2_MBUS_FMT_SGRBG10_DPCM8_1X8 = 0x3009, V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_BE = 0x3003, V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE = 0x3004, V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_BE = 0x3005, V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_LE = 0x3006, V4L2_MBUS_FMT_SBGGR10_1X10 = 0x3007, + V4L2_MBUS_FMT_SGRBG10_1X10 = 0x300a, V4L2_MBUS_FMT_SBGGR12_1X12 = 0x3008, }; -- cgit v1.2.3 From b1fd18cd9b8719f7668bb00e14f02a8e227e42e9 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Fri, 3 Sep 2010 05:47:25 -0300 Subject: [media] v4l: Add remaining RAW10 patterns w DPCM pixel code variants This adds following formats: - V4L2_MBUS_FMT_SRGGB10_1X10 - V4L2_MBUS_FMT_SGBRG10_1X10 - V4L2_MBUS_FMT_SRGGB10_DPCM8_1X8 - V4L2_MBUS_FMT_SGBRG10_DPCM8_1X8 - V4L2_MBUS_FMT_SBGGR10_DPCM8_1X8 Signed-off-by: Sergio Aguirre Signed-off-by: Laurent Pinchart Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- include/linux/v4l2-mediabus.h | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/v4l2-mediabus.h b/include/linux/v4l2-mediabus.h index c4caca33e0c6..5c64924371df 100644 --- a/include/linux/v4l2-mediabus.h +++ b/include/linux/v4l2-mediabus.h @@ -67,16 +67,21 @@ enum v4l2_mbus_pixelcode { V4L2_MBUS_FMT_YUYV10_1X20 = 0x200d, V4L2_MBUS_FMT_YVYU10_1X20 = 0x200e, - /* Bayer - next is 0x300b */ + /* Bayer - next is 0x3010 */ V4L2_MBUS_FMT_SBGGR8_1X8 = 0x3001, V4L2_MBUS_FMT_SGRBG8_1X8 = 0x3002, + V4L2_MBUS_FMT_SBGGR10_DPCM8_1X8 = 0x300b, + V4L2_MBUS_FMT_SGBRG10_DPCM8_1X8 = 0x300c, V4L2_MBUS_FMT_SGRBG10_DPCM8_1X8 = 0x3009, + V4L2_MBUS_FMT_SRGGB10_DPCM8_1X8 = 0x300d, V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_BE = 0x3003, V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE = 0x3004, V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_BE = 0x3005, V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_LE = 0x3006, V4L2_MBUS_FMT_SBGGR10_1X10 = 0x3007, + V4L2_MBUS_FMT_SGBRG10_1X10 = 0x300e, V4L2_MBUS_FMT_SGRBG10_1X10 = 0x300a, + V4L2_MBUS_FMT_SRGGB10_1X10 = 0x300f, V4L2_MBUS_FMT_SBGGR12_1X12 = 0x3008, }; -- cgit v1.2.3 From 7140c55738561907a1f66abf533d6358bf69ed9f Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Thu, 23 Dec 2010 11:14:49 -0300 Subject: [media] v4l: Add missing 12 bits bayer media bus formats Add codes and documentation for the following media bus formats: - V4L2_MBUS_FMT_SGBRG12_1X12 - V4L2_MBUS_FMT_SGRBG12_1X12 - V4L2_MBUS_FMT_SRGGB12_1X12 Signed-off-by: Laurent Pinchart Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- include/linux/v4l2-mediabus.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/v4l2-mediabus.h b/include/linux/v4l2-mediabus.h index 5c64924371df..7054a7a8065e 100644 --- a/include/linux/v4l2-mediabus.h +++ b/include/linux/v4l2-mediabus.h @@ -67,7 +67,7 @@ enum v4l2_mbus_pixelcode { V4L2_MBUS_FMT_YUYV10_1X20 = 0x200d, V4L2_MBUS_FMT_YVYU10_1X20 = 0x200e, - /* Bayer - next is 0x3010 */ + /* Bayer - next is 0x3013 */ V4L2_MBUS_FMT_SBGGR8_1X8 = 0x3001, V4L2_MBUS_FMT_SGRBG8_1X8 = 0x3002, V4L2_MBUS_FMT_SBGGR10_DPCM8_1X8 = 0x300b, @@ -83,6 +83,9 @@ enum v4l2_mbus_pixelcode { V4L2_MBUS_FMT_SGRBG10_1X10 = 0x300a, V4L2_MBUS_FMT_SRGGB10_1X10 = 0x300f, V4L2_MBUS_FMT_SBGGR12_1X12 = 0x3008, + V4L2_MBUS_FMT_SGBRG12_1X12 = 0x3010, + V4L2_MBUS_FMT_SGRBG12_1X12 = 0x3011, + V4L2_MBUS_FMT_SRGGB12_1X12 = 0x3012, }; /** -- cgit v1.2.3 From 39187e177dc6372a967aa17a49a79189dc4fa8de Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Thu, 23 Dec 2010 11:14:50 -0300 Subject: [media] v4l: Add 12 bits bayer pixel formats Add FCCs for the following pixel formats: - V4L2_PIX_FMT_SBGGR12 - V4L2_PIX_FMT_SGBRG12 - V4L2_PIX_FMT_SGRBG12 - V4L2_PIX_FMT_SRGGB12 Signed-off-by: Laurent Pinchart Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- include/linux/videodev2.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h index a94c4d5ac340..8c80fd36da0d 100644 --- a/include/linux/videodev2.h +++ b/include/linux/videodev2.h @@ -355,6 +355,10 @@ struct v4l2_pix_format { #define V4L2_PIX_FMT_SGBRG10 v4l2_fourcc('G', 'B', '1', '0') /* 10 GBGB.. RGRG.. */ #define V4L2_PIX_FMT_SGRBG10 v4l2_fourcc('B', 'A', '1', '0') /* 10 GRGR.. BGBG.. */ #define V4L2_PIX_FMT_SRGGB10 v4l2_fourcc('R', 'G', '1', '0') /* 10 RGRG.. GBGB.. */ +#define V4L2_PIX_FMT_SBGGR12 v4l2_fourcc('B', 'G', '1', '2') /* 12 BGBG.. GRGR.. */ +#define V4L2_PIX_FMT_SGBRG12 v4l2_fourcc('G', 'B', '1', '2') /* 12 GBGB.. RGRG.. */ +#define V4L2_PIX_FMT_SGRBG12 v4l2_fourcc('B', 'A', '1', '2') /* 12 GRGR.. BGBG.. */ +#define V4L2_PIX_FMT_SRGGB12 v4l2_fourcc('R', 'G', '1', '2') /* 12 RGRG.. GBGB.. */ /* 10bit raw bayer DPCM compressed to 8 bits */ #define V4L2_PIX_FMT_SGRBG10DPCM8 v4l2_fourcc('B', 'D', '1', '0') /* -- cgit v1.2.3 From 448de7e7850b804bc8f5efa60305a83333c257bf Mon Sep 17 00:00:00 2001 From: Sakari Ailus Date: Sat, 12 Feb 2011 18:05:06 -0300 Subject: [media] omap3isp: OMAP3 ISP core The Image Signal Processor provides the system interface and the processing capability to connect RAW or YUV image-sensor modules to the OMAP3. Signed-off-by: Laurent Pinchart Signed-off-by: Sakari Ailus Signed-off-by: David Cohen Signed-off-by: Stanimir Varbanov Signed-off-by: Vimarsh Zutshi Signed-off-by: Tuukka Toivonen Signed-off-by: Sergio Aguirre Signed-off-by: Antti Koskipaa Signed-off-by: Ivan T. Ivanov Signed-off-by: RaniSuneela Signed-off-by: Atanas Filipov Signed-off-by: Gjorgji Rosikopulos Signed-off-by: Hiroshi DOYU Signed-off-by: Nayden Kanchev Signed-off-by: Phil Carmody Signed-off-by: Artem Bityutskiy Signed-off-by: Dominic Curran Signed-off-by: Ilkka Myllyperkio Signed-off-by: Pallavi Kulkarni Signed-off-by: Vaibhav Hiremath Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- include/linux/omap3isp.h | 646 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 646 insertions(+) create mode 100644 include/linux/omap3isp.h (limited to 'include/linux') diff --git a/include/linux/omap3isp.h b/include/linux/omap3isp.h new file mode 100644 index 000000000000..150822b4dbff --- /dev/null +++ b/include/linux/omap3isp.h @@ -0,0 +1,646 @@ +/* + * omap3isp.h + * + * TI OMAP3 ISP - User-space API + * + * Copyright (C) 2010 Nokia Corporation + * Copyright (C) 2009 Texas Instruments, Inc. + * + * Contacts: Laurent Pinchart + * Sakari Ailus + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA + * 02110-1301 USA + */ + +#ifndef OMAP3_ISP_USER_H +#define OMAP3_ISP_USER_H + +#include + +/* + * Private IOCTLs + * + * VIDIOC_OMAP3ISP_CCDC_CFG: Set CCDC configuration + * VIDIOC_OMAP3ISP_PRV_CFG: Set preview engine configuration + * VIDIOC_OMAP3ISP_AEWB_CFG: Set AEWB module configuration + * VIDIOC_OMAP3ISP_HIST_CFG: Set histogram module configuration + * VIDIOC_OMAP3ISP_AF_CFG: Set auto-focus module configuration + * VIDIOC_OMAP3ISP_STAT_REQ: Read statistics (AEWB/AF/histogram) data + * VIDIOC_OMAP3ISP_STAT_EN: Enable/disable a statistics module + */ + +#define VIDIOC_OMAP3ISP_CCDC_CFG \ + _IOWR('V', BASE_VIDIOC_PRIVATE + 1, struct omap3isp_ccdc_update_config) +#define VIDIOC_OMAP3ISP_PRV_CFG \ + _IOWR('V', BASE_VIDIOC_PRIVATE + 2, struct omap3isp_prev_update_config) +#define VIDIOC_OMAP3ISP_AEWB_CFG \ + _IOWR('V', BASE_VIDIOC_PRIVATE + 3, struct omap3isp_h3a_aewb_config) +#define VIDIOC_OMAP3ISP_HIST_CFG \ + _IOWR('V', BASE_VIDIOC_PRIVATE + 4, struct omap3isp_hist_config) +#define VIDIOC_OMAP3ISP_AF_CFG \ + _IOWR('V', BASE_VIDIOC_PRIVATE + 5, struct omap3isp_h3a_af_config) +#define VIDIOC_OMAP3ISP_STAT_REQ \ + _IOWR('V', BASE_VIDIOC_PRIVATE + 6, struct omap3isp_stat_data) +#define VIDIOC_OMAP3ISP_STAT_EN \ + _IOWR('V', BASE_VIDIOC_PRIVATE + 7, unsigned long) + +/* + * Events + * + * V4L2_EVENT_OMAP3ISP_AEWB: AEWB statistics data ready + * V4L2_EVENT_OMAP3ISP_AF: AF statistics data ready + * V4L2_EVENT_OMAP3ISP_HIST: Histogram statistics data ready + * V4L2_EVENT_OMAP3ISP_HS_VS: Horizontal/vertical synchronization detected + */ + +#define V4L2_EVENT_OMAP3ISP_CLASS (V4L2_EVENT_PRIVATE_START | 0x100) +#define V4L2_EVENT_OMAP3ISP_AEWB (V4L2_EVENT_OMAP3ISP_CLASS | 0x1) +#define V4L2_EVENT_OMAP3ISP_AF (V4L2_EVENT_OMAP3ISP_CLASS | 0x2) +#define V4L2_EVENT_OMAP3ISP_HIST (V4L2_EVENT_OMAP3ISP_CLASS | 0x3) +#define V4L2_EVENT_OMAP3ISP_HS_VS (V4L2_EVENT_OMAP3ISP_CLASS | 0x4) + +struct omap3isp_stat_event_status { + __u32 frame_number; + __u16 config_counter; + __u8 buf_err; +}; + +/* AE/AWB related structures and flags*/ + +/* H3A Range Constants */ +#define OMAP3ISP_AEWB_MAX_SATURATION_LIM 1023 +#define OMAP3ISP_AEWB_MIN_WIN_H 2 +#define OMAP3ISP_AEWB_MAX_WIN_H 256 +#define OMAP3ISP_AEWB_MIN_WIN_W 6 +#define OMAP3ISP_AEWB_MAX_WIN_W 256 +#define OMAP3ISP_AEWB_MIN_WINVC 1 +#define OMAP3ISP_AEWB_MIN_WINHC 1 +#define OMAP3ISP_AEWB_MAX_WINVC 128 +#define OMAP3ISP_AEWB_MAX_WINHC 36 +#define OMAP3ISP_AEWB_MAX_WINSTART 4095 +#define OMAP3ISP_AEWB_MIN_SUB_INC 2 +#define OMAP3ISP_AEWB_MAX_SUB_INC 32 +#define OMAP3ISP_AEWB_MAX_BUF_SIZE 83600 + +#define OMAP3ISP_AF_IIRSH_MIN 0 +#define OMAP3ISP_AF_IIRSH_MAX 4095 +#define OMAP3ISP_AF_PAXEL_HORIZONTAL_COUNT_MIN 1 +#define OMAP3ISP_AF_PAXEL_HORIZONTAL_COUNT_MAX 36 +#define OMAP3ISP_AF_PAXEL_VERTICAL_COUNT_MIN 1 +#define OMAP3ISP_AF_PAXEL_VERTICAL_COUNT_MAX 128 +#define OMAP3ISP_AF_PAXEL_INCREMENT_MIN 2 +#define OMAP3ISP_AF_PAXEL_INCREMENT_MAX 32 +#define OMAP3ISP_AF_PAXEL_HEIGHT_MIN 2 +#define OMAP3ISP_AF_PAXEL_HEIGHT_MAX 256 +#define OMAP3ISP_AF_PAXEL_WIDTH_MIN 16 +#define OMAP3ISP_AF_PAXEL_WIDTH_MAX 256 +#define OMAP3ISP_AF_PAXEL_HZSTART_MIN 1 +#define OMAP3ISP_AF_PAXEL_HZSTART_MAX 4095 +#define OMAP3ISP_AF_PAXEL_VTSTART_MIN 0 +#define OMAP3ISP_AF_PAXEL_VTSTART_MAX 4095 +#define OMAP3ISP_AF_THRESHOLD_MAX 255 +#define OMAP3ISP_AF_COEF_MAX 4095 +#define OMAP3ISP_AF_PAXEL_SIZE 48 +#define OMAP3ISP_AF_MAX_BUF_SIZE 221184 + +/** + * struct omap3isp_h3a_aewb_config - AE AWB configuration reset values + * saturation_limit: Saturation limit. + * @win_height: Window Height. Range 2 - 256, even values only. + * @win_width: Window Width. Range 6 - 256, even values only. + * @ver_win_count: Vertical Window Count. Range 1 - 128. + * @hor_win_count: Horizontal Window Count. Range 1 - 36. + * @ver_win_start: Vertical Window Start. Range 0 - 4095. + * @hor_win_start: Horizontal Window Start. Range 0 - 4095. + * @blk_ver_win_start: Black Vertical Windows Start. Range 0 - 4095. + * @blk_win_height: Black Window Height. Range 2 - 256, even values only. + * @subsample_ver_inc: Subsample Vertical points increment Range 2 - 32, even + * values only. + * @subsample_hor_inc: Subsample Horizontal points increment Range 2 - 32, even + * values only. + * @alaw_enable: AEW ALAW EN flag. + */ +struct omap3isp_h3a_aewb_config { + /* + * Common fields. + * They should be the first ones and must be in the same order as in + * ispstat_generic_config struct. + */ + __u32 buf_size; + __u16 config_counter; + + /* Private fields */ + __u16 saturation_limit; + __u16 win_height; + __u16 win_width; + __u16 ver_win_count; + __u16 hor_win_count; + __u16 ver_win_start; + __u16 hor_win_start; + __u16 blk_ver_win_start; + __u16 blk_win_height; + __u16 subsample_ver_inc; + __u16 subsample_hor_inc; + __u8 alaw_enable; +}; + +/** + * struct omap3isp_stat_data - Statistic data sent to or received from user + * @ts: Timestamp of returned framestats. + * @buf: Pointer to pass to user. + * @frame_number: Frame number of requested stats. + * @cur_frame: Current frame number being processed. + * @config_counter: Number of the configuration associated with the data. + */ +struct omap3isp_stat_data { + struct timeval ts; + void __user *buf; + __u32 buf_size; + __u16 frame_number; + __u16 cur_frame; + __u16 config_counter; +}; + + +/* Histogram related structs */ + +/* Flags for number of bins */ +#define OMAP3ISP_HIST_BINS_32 0 +#define OMAP3ISP_HIST_BINS_64 1 +#define OMAP3ISP_HIST_BINS_128 2 +#define OMAP3ISP_HIST_BINS_256 3 + +/* Number of bins * 4 colors * 4-bytes word */ +#define OMAP3ISP_HIST_MEM_SIZE_BINS(n) ((1 << ((n)+5))*4*4) + +#define OMAP3ISP_HIST_MEM_SIZE 1024 +#define OMAP3ISP_HIST_MIN_REGIONS 1 +#define OMAP3ISP_HIST_MAX_REGIONS 4 +#define OMAP3ISP_HIST_MAX_WB_GAIN 255 +#define OMAP3ISP_HIST_MIN_WB_GAIN 0 +#define OMAP3ISP_HIST_MAX_BIT_WIDTH 14 +#define OMAP3ISP_HIST_MIN_BIT_WIDTH 8 +#define OMAP3ISP_HIST_MAX_WG 4 +#define OMAP3ISP_HIST_MAX_BUF_SIZE 4096 + +/* Source */ +#define OMAP3ISP_HIST_SOURCE_CCDC 0 +#define OMAP3ISP_HIST_SOURCE_MEM 1 + +/* CFA pattern */ +#define OMAP3ISP_HIST_CFA_BAYER 0 +#define OMAP3ISP_HIST_CFA_FOVEONX3 1 + +struct omap3isp_hist_region { + __u16 h_start; + __u16 h_end; + __u16 v_start; + __u16 v_end; +}; + +struct omap3isp_hist_config { + /* + * Common fields. + * They should be the first ones and must be in the same order as in + * ispstat_generic_config struct. + */ + __u32 buf_size; + __u16 config_counter; + + __u8 num_acc_frames; /* Num of image frames to be processed and + accumulated for each histogram frame */ + __u16 hist_bins; /* number of bins: 32, 64, 128, or 256 */ + __u8 cfa; /* BAYER or FOVEON X3 */ + __u8 wg[OMAP3ISP_HIST_MAX_WG]; /* White Balance Gain */ + __u8 num_regions; /* number of regions to be configured */ + struct omap3isp_hist_region region[OMAP3ISP_HIST_MAX_REGIONS]; +}; + +/* Auto Focus related structs */ + +#define OMAP3ISP_AF_NUM_COEF 11 + +enum omap3isp_h3a_af_fvmode { + OMAP3ISP_AF_MODE_SUMMED = 0, + OMAP3ISP_AF_MODE_PEAK = 1 +}; + +/* Red, Green, and blue pixel location in the AF windows */ +enum omap3isp_h3a_af_rgbpos { + OMAP3ISP_AF_GR_GB_BAYER = 0, /* GR and GB as Bayer pattern */ + OMAP3ISP_AF_RG_GB_BAYER = 1, /* RG and GB as Bayer pattern */ + OMAP3ISP_AF_GR_BG_BAYER = 2, /* GR and BG as Bayer pattern */ + OMAP3ISP_AF_RG_BG_BAYER = 3, /* RG and BG as Bayer pattern */ + OMAP3ISP_AF_GG_RB_CUSTOM = 4, /* GG and RB as custom pattern */ + OMAP3ISP_AF_RB_GG_CUSTOM = 5 /* RB and GG as custom pattern */ +}; + +/* Contains the information regarding the Horizontal Median Filter */ +struct omap3isp_h3a_af_hmf { + __u8 enable; /* Status of Horizontal Median Filter */ + __u8 threshold; /* Threshhold Value for Horizontal Median Filter */ +}; + +/* Contains the information regarding the IIR Filters */ +struct omap3isp_h3a_af_iir { + __u16 h_start; /* IIR horizontal start */ + __u16 coeff_set0[OMAP3ISP_AF_NUM_COEF]; /* Filter coefficient, set 0 */ + __u16 coeff_set1[OMAP3ISP_AF_NUM_COEF]; /* Filter coefficient, set 1 */ +}; + +/* Contains the information regarding the Paxels Structure in AF Engine */ +struct omap3isp_h3a_af_paxel { + __u16 h_start; /* Horizontal Start Position */ + __u16 v_start; /* Vertical Start Position */ + __u8 width; /* Width of the Paxel */ + __u8 height; /* Height of the Paxel */ + __u8 h_cnt; /* Horizontal Count */ + __u8 v_cnt; /* vertical Count */ + __u8 line_inc; /* Line Increment */ +}; + +/* Contains the parameters required for hardware set up of AF Engine */ +struct omap3isp_h3a_af_config { + /* + * Common fields. + * They should be the first ones and must be in the same order as in + * ispstat_generic_config struct. + */ + __u32 buf_size; + __u16 config_counter; + + struct omap3isp_h3a_af_hmf hmf; /* HMF configurations */ + struct omap3isp_h3a_af_iir iir; /* IIR filter configurations */ + struct omap3isp_h3a_af_paxel paxel; /* Paxel parameters */ + enum omap3isp_h3a_af_rgbpos rgb_pos; /* RGB Positions */ + enum omap3isp_h3a_af_fvmode fvmode; /* Accumulator mode */ + __u8 alaw_enable; /* AF ALAW status */ +}; + +/* ISP CCDC structs */ + +/* Abstraction layer CCDC configurations */ +#define OMAP3ISP_CCDC_ALAW (1 << 0) +#define OMAP3ISP_CCDC_LPF (1 << 1) +#define OMAP3ISP_CCDC_BLCLAMP (1 << 2) +#define OMAP3ISP_CCDC_BCOMP (1 << 3) +#define OMAP3ISP_CCDC_FPC (1 << 4) +#define OMAP3ISP_CCDC_CULL (1 << 5) +#define OMAP3ISP_CCDC_CONFIG_LSC (1 << 7) +#define OMAP3ISP_CCDC_TBL_LSC (1 << 8) + +#define OMAP3ISP_RGB_MAX 3 + +/* Enumeration constants for Alaw input width */ +enum omap3isp_alaw_ipwidth { + OMAP3ISP_ALAW_BIT12_3 = 0x3, + OMAP3ISP_ALAW_BIT11_2 = 0x4, + OMAP3ISP_ALAW_BIT10_1 = 0x5, + OMAP3ISP_ALAW_BIT9_0 = 0x6 +}; + +/** + * struct omap3isp_ccdc_lsc_config - LSC configuration + * @offset: Table Offset of the gain table. + * @gain_mode_n: Vertical dimension of a paxel in LSC configuration. + * @gain_mode_m: Horizontal dimension of a paxel in LSC configuration. + * @gain_format: Gain table format. + * @fmtsph: Start pixel horizontal from start of the HS sync pulse. + * @fmtlnh: Number of pixels in horizontal direction to use for the data + * reformatter. + * @fmtslv: Start line from start of VS sync pulse for the data reformatter. + * @fmtlnv: Number of lines in vertical direction for the data reformatter. + * @initial_x: X position, in pixels, of the first active pixel in reference + * to the first active paxel. Must be an even number. + * @initial_y: Y position, in pixels, of the first active pixel in reference + * to the first active paxel. Must be an even number. + * @size: Size of LSC gain table. Filled when loaded from userspace. + */ +struct omap3isp_ccdc_lsc_config { + __u16 offset; + __u8 gain_mode_n; + __u8 gain_mode_m; + __u8 gain_format; + __u16 fmtsph; + __u16 fmtlnh; + __u16 fmtslv; + __u16 fmtlnv; + __u8 initial_x; + __u8 initial_y; + __u32 size; +}; + +/** + * struct omap3isp_ccdc_bclamp - Optical & Digital black clamp subtract + * @obgain: Optical black average gain. + * @obstpixel: Start Pixel w.r.t. HS pulse in Optical black sample. + * @oblines: Optical Black Sample lines. + * @oblen: Optical Black Sample Length. + * @dcsubval: Digital Black Clamp subtract value. + */ +struct omap3isp_ccdc_bclamp { + __u8 obgain; + __u8 obstpixel; + __u8 oblines; + __u8 oblen; + __u16 dcsubval; +}; + +/** + * struct omap3isp_ccdc_fpc - Faulty Pixels Correction + * @fpnum: Number of faulty pixels to be corrected in the frame. + * @fpcaddr: Memory address of the FPC Table + */ +struct omap3isp_ccdc_fpc { + __u16 fpnum; + __u32 fpcaddr; +}; + +/** + * struct omap3isp_ccdc_blcomp - Black Level Compensation parameters + * @b_mg: B/Mg pixels. 2's complement. -128 to +127. + * @gb_g: Gb/G pixels. 2's complement. -128 to +127. + * @gr_cy: Gr/Cy pixels. 2's complement. -128 to +127. + * @r_ye: R/Ye pixels. 2's complement. -128 to +127. + */ +struct omap3isp_ccdc_blcomp { + __u8 b_mg; + __u8 gb_g; + __u8 gr_cy; + __u8 r_ye; +}; + +/** + * omap3isp_ccdc_culling - Culling parameters + * @v_pattern: Vertical culling pattern. + * @h_odd: Horizontal Culling pattern for odd lines. + * @h_even: Horizontal Culling pattern for even lines. + */ +struct omap3isp_ccdc_culling { + __u8 v_pattern; + __u16 h_odd; + __u16 h_even; +}; + +/** + * omap3isp_ccdc_update_config - CCDC configuration + * @update: Specifies which CCDC registers should be updated. + * @flag: Specifies which CCDC functions should be enabled. + * @alawip: Enable/Disable A-Law compression. + * @bclamp: Black clamp control register. + * @blcomp: Black level compensation value for RGrGbB Pixels. 2's complement. + * @fpc: Number of faulty pixels corrected in the frame, address of FPC table. + * @cull: Cull control register. + * @lsc: Pointer to LSC gain table. + */ +struct omap3isp_ccdc_update_config { + __u16 update; + __u16 flag; + enum omap3isp_alaw_ipwidth alawip; + struct omap3isp_ccdc_bclamp __user *bclamp; + struct omap3isp_ccdc_blcomp __user *blcomp; + struct omap3isp_ccdc_fpc __user *fpc; + struct omap3isp_ccdc_lsc_config __user *lsc_cfg; + struct omap3isp_ccdc_culling __user *cull; + __u8 __user *lsc; +}; + +/* Preview configurations */ +#define OMAP3ISP_PREV_LUMAENH (1 << 0) +#define OMAP3ISP_PREV_INVALAW (1 << 1) +#define OMAP3ISP_PREV_HRZ_MED (1 << 2) +#define OMAP3ISP_PREV_CFA (1 << 3) +#define OMAP3ISP_PREV_CHROMA_SUPP (1 << 4) +#define OMAP3ISP_PREV_WB (1 << 5) +#define OMAP3ISP_PREV_BLKADJ (1 << 6) +#define OMAP3ISP_PREV_RGB2RGB (1 << 7) +#define OMAP3ISP_PREV_COLOR_CONV (1 << 8) +#define OMAP3ISP_PREV_YC_LIMIT (1 << 9) +#define OMAP3ISP_PREV_DEFECT_COR (1 << 10) +#define OMAP3ISP_PREV_GAMMABYPASS (1 << 11) +#define OMAP3ISP_PREV_DRK_FRM_CAPTURE (1 << 12) +#define OMAP3ISP_PREV_DRK_FRM_SUBTRACT (1 << 13) +#define OMAP3ISP_PREV_LENS_SHADING (1 << 14) +#define OMAP3ISP_PREV_NF (1 << 15) +#define OMAP3ISP_PREV_GAMMA (1 << 16) + +#define OMAP3ISP_PREV_NF_TBL_SIZE 64 +#define OMAP3ISP_PREV_CFA_TBL_SIZE 576 +#define OMAP3ISP_PREV_GAMMA_TBL_SIZE 1024 +#define OMAP3ISP_PREV_YENH_TBL_SIZE 128 + +#define OMAP3ISP_PREV_DETECT_CORRECT_CHANNELS 4 + +/** + * struct omap3isp_prev_hmed - Horizontal Median Filter + * @odddist: Distance between consecutive pixels of same color in the odd line. + * @evendist: Distance between consecutive pixels of same color in the even + * line. + * @thres: Horizontal median filter threshold. + */ +struct omap3isp_prev_hmed { + __u8 odddist; + __u8 evendist; + __u8 thres; +}; + +/* + * Enumeration for CFA Formats supported by preview + */ +enum omap3isp_cfa_fmt { + OMAP3ISP_CFAFMT_BAYER, + OMAP3ISP_CFAFMT_SONYVGA, + OMAP3ISP_CFAFMT_RGBFOVEON, + OMAP3ISP_CFAFMT_DNSPL, + OMAP3ISP_CFAFMT_HONEYCOMB, + OMAP3ISP_CFAFMT_RRGGBBFOVEON +}; + +/** + * struct omap3isp_prev_cfa - CFA Interpolation + * @format: CFA Format Enum value supported by preview. + * @gradthrs_vert: CFA Gradient Threshold - Vertical. + * @gradthrs_horz: CFA Gradient Threshold - Horizontal. + * @table: Pointer to the CFA table. + */ +struct omap3isp_prev_cfa { + enum omap3isp_cfa_fmt format; + __u8 gradthrs_vert; + __u8 gradthrs_horz; + __u32 table[OMAP3ISP_PREV_CFA_TBL_SIZE]; +}; + +/** + * struct omap3isp_prev_csup - Chrominance Suppression + * @gain: Gain. + * @thres: Threshold. + * @hypf_en: Flag to enable/disable the High Pass Filter. + */ +struct omap3isp_prev_csup { + __u8 gain; + __u8 thres; + __u8 hypf_en; +}; + +/** + * struct omap3isp_prev_wbal - White Balance + * @dgain: Digital gain (U10Q8). + * @coef3: White balance gain - COEF 3 (U8Q5). + * @coef2: White balance gain - COEF 2 (U8Q5). + * @coef1: White balance gain - COEF 1 (U8Q5). + * @coef0: White balance gain - COEF 0 (U8Q5). + */ +struct omap3isp_prev_wbal { + __u16 dgain; + __u8 coef3; + __u8 coef2; + __u8 coef1; + __u8 coef0; +}; + +/** + * struct omap3isp_prev_blkadj - Black Level Adjustment + * @red: Black level offset adjustment for Red in 2's complement format + * @green: Black level offset adjustment for Green in 2's complement format + * @blue: Black level offset adjustment for Blue in 2's complement format + */ +struct omap3isp_prev_blkadj { + /*Black level offset adjustment for Red in 2's complement format */ + __u8 red; + /*Black level offset adjustment for Green in 2's complement format */ + __u8 green; + /* Black level offset adjustment for Blue in 2's complement format */ + __u8 blue; +}; + +/** + * struct omap3isp_prev_rgbtorgb - RGB to RGB Blending + * @matrix: Blending values(S12Q8 format) + * [RR] [GR] [BR] + * [RG] [GG] [BG] + * [RB] [GB] [BB] + * @offset: Blending offset value for R,G,B in 2's complement integer format. + */ +struct omap3isp_prev_rgbtorgb { + __u16 matrix[OMAP3ISP_RGB_MAX][OMAP3ISP_RGB_MAX]; + __u16 offset[OMAP3ISP_RGB_MAX]; +}; + +/** + * struct omap3isp_prev_csc - Color Space Conversion from RGB-YCbYCr + * @matrix: Color space conversion coefficients(S10Q8) + * [CSCRY] [CSCGY] [CSCBY] + * [CSCRCB] [CSCGCB] [CSCBCB] + * [CSCRCR] [CSCGCR] [CSCBCR] + * @offset: CSC offset values for Y offset, CB offset and CR offset respectively + */ +struct omap3isp_prev_csc { + __u16 matrix[OMAP3ISP_RGB_MAX][OMAP3ISP_RGB_MAX]; + __s16 offset[OMAP3ISP_RGB_MAX]; +}; + +/** + * struct omap3isp_prev_yclimit - Y, C Value Limit + * @minC: Minimum C value + * @maxC: Maximum C value + * @minY: Minimum Y value + * @maxY: Maximum Y value + */ +struct omap3isp_prev_yclimit { + __u8 minC; + __u8 maxC; + __u8 minY; + __u8 maxY; +}; + +/** + * struct omap3isp_prev_dcor - Defect correction + * @couplet_mode_en: Flag to enable or disable the couplet dc Correction in NF + * @detect_correct: Thresholds for correction bit 0:10 detect 16:25 correct + */ +struct omap3isp_prev_dcor { + __u8 couplet_mode_en; + __u32 detect_correct[OMAP3ISP_PREV_DETECT_CORRECT_CHANNELS]; +}; + +/** + * struct omap3isp_prev_nf - Noise Filter + * @spread: Spread value to be used in Noise Filter + * @table: Pointer to the Noise Filter table + */ +struct omap3isp_prev_nf { + __u8 spread; + __u32 table[OMAP3ISP_PREV_NF_TBL_SIZE]; +}; + +/** + * struct omap3isp_prev_gtables - Gamma correction tables + * @red: Array for red gamma table. + * @green: Array for green gamma table. + * @blue: Array for blue gamma table. + */ +struct omap3isp_prev_gtables { + __u32 red[OMAP3ISP_PREV_GAMMA_TBL_SIZE]; + __u32 green[OMAP3ISP_PREV_GAMMA_TBL_SIZE]; + __u32 blue[OMAP3ISP_PREV_GAMMA_TBL_SIZE]; +}; + +/** + * struct omap3isp_prev_luma - Luma enhancement + * @table: Array for luma enhancement table. + */ +struct omap3isp_prev_luma { + __u32 table[OMAP3ISP_PREV_YENH_TBL_SIZE]; +}; + +/** + * struct omap3isp_prev_update_config - Preview engine configuration (user) + * @update: Specifies which ISP Preview registers should be updated. + * @flag: Specifies which ISP Preview functions should be enabled. + * @shading_shift: 3bit value of shift used in shading compensation. + * @luma: Pointer to luma enhancement structure. + * @hmed: Pointer to structure containing the odd and even distance. + * between the pixels in the image along with the filter threshold. + * @cfa: Pointer to structure containing the CFA interpolation table, CFA. + * format in the image, vertical and horizontal gradient threshold. + * @csup: Pointer to Structure for Chrominance Suppression coefficients. + * @wbal: Pointer to structure for White Balance. + * @blkadj: Pointer to structure for Black Adjustment. + * @rgb2rgb: Pointer to structure for RGB to RGB Blending. + * @csc: Pointer to structure for Color Space Conversion from RGB-YCbYCr. + * @yclimit: Pointer to structure for Y, C Value Limit. + * @dcor: Pointer to structure for defect correction. + * @nf: Pointer to structure for Noise Filter + * @gamma: Pointer to gamma structure. + */ +struct omap3isp_prev_update_config { + __u32 update; + __u32 flag; + __u32 shading_shift; + struct omap3isp_prev_luma __user *luma; + struct omap3isp_prev_hmed __user *hmed; + struct omap3isp_prev_cfa __user *cfa; + struct omap3isp_prev_csup __user *csup; + struct omap3isp_prev_wbal __user *wbal; + struct omap3isp_prev_blkadj __user *blkadj; + struct omap3isp_prev_rgbtorgb __user *rgb2rgb; + struct omap3isp_prev_csc __user *csc; + struct omap3isp_prev_yclimit __user *yclimit; + struct omap3isp_prev_dcor __user *dcor; + struct omap3isp_prev_nf __user *nf; + struct omap3isp_prev_gtables __user *gamma; +}; + +#endif /* OMAP3_ISP_USER_H */ -- cgit v1.2.3 From 7e8970e1d5ae9237d00909599e70f85fce1fc489 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Sat, 12 Feb 2011 18:05:06 -0300 Subject: [media] omap3isp: Kconfig and Makefile Add the OMAP3 ISP driver to the kernel build system. Signed-off-by: Laurent Pinchart Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- include/linux/Kbuild | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/Kbuild b/include/linux/Kbuild index 43918a34db9f..75cf611641e6 100644 --- a/include/linux/Kbuild +++ b/include/linux/Kbuild @@ -277,6 +277,7 @@ header-y += nfsacl.h header-y += nl80211.h header-y += nubus.h header-y += nvram.h +header-y += omap3isp.h header-y += omapfb.h header-y += oom.h header-y += param.h -- cgit v1.2.3 From 474966ee01cc877e28abed3ada5b48a963c58695 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Sat, 5 Mar 2011 17:14:33 -0300 Subject: [media] media: Pick a free ioctls range Pick an unused range of ioctls in Documentation/ioctl/ioctl-number.txt and use it for the MEDIA_IOC_* ioctls. Signed-off-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- include/linux/media.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/media.h b/include/linux/media.h index 7ed23b43f43b..0ef883327de2 100644 --- a/include/linux/media.h +++ b/include/linux/media.h @@ -124,9 +124,9 @@ struct media_links_enum { __u32 reserved[4]; }; -#define MEDIA_IOC_DEVICE_INFO _IOWR('M', 1, struct media_device_info) -#define MEDIA_IOC_ENUM_ENTITIES _IOWR('M', 2, struct media_entity_desc) -#define MEDIA_IOC_ENUM_LINKS _IOWR('M', 3, struct media_links_enum) -#define MEDIA_IOC_SETUP_LINK _IOWR('M', 4, struct media_link_desc) +#define MEDIA_IOC_DEVICE_INFO _IOWR('|', 0x00, struct media_device_info) +#define MEDIA_IOC_ENUM_ENTITIES _IOWR('|', 0x01, struct media_entity_desc) +#define MEDIA_IOC_ENUM_LINKS _IOWR('|', 0x02, struct media_links_enum) +#define MEDIA_IOC_SETUP_LINK _IOWR('|', 0x03, struct media_link_desc) #endif /* __LINUX_MEDIA_H */ -- cgit v1.2.3 From ce5b2acce60405b938d1f1f994024cde4e2cdd7e Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Jean-Fran=C3=A7ois=20Moine?= Date: Mon, 14 Mar 2011 08:49:28 -0300 Subject: [media] gspca - nw80x: New subdriver for Divio based webcams MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit [mchehab@redhat.com: Fix a few CodingStyle issues] Tested-by: Kjell Claesson Tested-by: Hans de Goede Signed-off-by: Jean-François Moine Signed-off-by: Mauro Carvalho Chehab --- include/linux/videodev2.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h index 8c80fd36da0d..aa6c393b7ae9 100644 --- a/include/linux/videodev2.h +++ b/include/linux/videodev2.h @@ -396,6 +396,7 @@ struct v4l2_pix_format { #define V4L2_PIX_FMT_TM6000 v4l2_fourcc('T', 'M', '6', '0') /* tm5600/tm60x0 */ #define V4L2_PIX_FMT_CIT_YYVYUY v4l2_fourcc('C', 'I', 'T', 'V') /* one line of Y then 1 line of VYUY */ #define V4L2_PIX_FMT_KONICA420 v4l2_fourcc('K', 'O', 'N', 'I') /* YUV420 planar in blocks of 256 pixels */ +#define V4L2_PIX_FMT_JPGL v4l2_fourcc('J', 'P', 'G', 'L') /* JPEG-Lite */ /* * F O R M A T E N U M E R A T I O N -- cgit v1.2.3 From 27660515a21bf913e3208ded3f27abd0529fae0e Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Micha=C5=82=20Miros=C5=82aw?= Date: Fri, 18 Mar 2011 16:56:34 +0000 Subject: net: implement dev_disable_lro() hw_features compatibility MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Implement compatibility with new hw_features for dev_disable_lro(). This is a transition path - dev_disable_lro() should be later integrated into netdev_fix_features() after all drivers are converted. Signed-off-by: Michał Mirosław Signed-off-by: David S. Miller --- include/linux/ethtool.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h index b297f288f6eb..ae757bcf1280 100644 --- a/include/linux/ethtool.h +++ b/include/linux/ethtool.h @@ -648,6 +648,9 @@ enum ethtool_sfeatures_retval_bits { #include +/* needed by dev_disable_lro() */ +extern int __ethtool_set_flags(struct net_device *dev, u32 flags); + struct ethtool_rx_ntuple_flow_spec_container { struct ethtool_rx_ntuple_flow_spec fs; struct list_head list; -- cgit v1.2.3 From bf5f0019046d596d613caf74722ba4994e153899 Mon Sep 17 00:00:00 2001 From: Heiko Schocher Date: Mon, 24 Jan 2011 09:57:20 +0000 Subject: video, sm501: add I/O functions for use on powerpc - add read/write functions for using this driver also on powerpc plattforms Signed-off-by: Heiko Schocher cc: linux-fbdev@vger.kernel.org cc: devicetree-discuss@ozlabs.org cc: Ben Dooks cc: Vincent Sanders cc: Samuel Ortiz cc: linux-kernel@vger.kernel.org cc: Randy Dunlap cc: Paul Mundt Acked-by: Samuel Ortiz Signed-off-by: Paul Mundt --- include/linux/sm501.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/linux') diff --git a/include/linux/sm501.h b/include/linux/sm501.h index 214f93209b8c..02fde50a79a5 100644 --- a/include/linux/sm501.h +++ b/include/linux/sm501.h @@ -172,3 +172,11 @@ struct sm501_platdata { struct sm501_platdata_gpio_i2c *gpio_i2c; unsigned int gpio_i2c_nr; }; + +#if defined(CONFIG_PPC32) +#define smc501_readl(addr) ioread32be((addr)) +#define smc501_writel(val, addr) iowrite32be((val), (addr)) +#else +#define smc501_readl(addr) readl(addr) +#define smc501_writel(val, addr) writel(val, addr) +#endif -- cgit v1.2.3 From a40c4f10e3fb96030358e49abd010c1f08446fa3 Mon Sep 17 00:00:00 2001 From: Yehuda Sadeh Date: Mon, 21 Mar 2011 15:07:16 -0700 Subject: libceph: add lingering request and watch/notify event framework Lingering requests are requests that are sent to the OSD normally but tracked also after we get a successful request. This keeps the OSD connection open and resends the original request if the object moves to another OSD. The OSD can then send notification messages back to us if another client initiates a notify. This framework will be used by RBD so that the client gets notification when a snapshot is created by another node or tool. Signed-off-by: Yehuda Sadeh Signed-off-by: Sage Weil --- include/linux/ceph/osd_client.h | 52 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h index e791b8e46353..f88eacb111d4 100644 --- a/include/linux/ceph/osd_client.h +++ b/include/linux/ceph/osd_client.h @@ -32,6 +32,7 @@ struct ceph_osd { struct rb_node o_node; struct ceph_connection o_con; struct list_head o_requests; + struct list_head o_linger_requests; struct list_head o_osd_lru; struct ceph_authorizer *o_authorizer; void *o_authorizer_buf, *o_authorizer_reply_buf; @@ -47,6 +48,8 @@ struct ceph_osd_request { struct rb_node r_node; struct list_head r_req_lru_item; struct list_head r_osd_item; + struct list_head r_linger_item; + struct list_head r_linger_osd; struct ceph_osd *r_osd; struct ceph_pg r_pgid; int r_pg_osds[CEPH_PG_MAX_SIZE]; @@ -59,6 +62,7 @@ struct ceph_osd_request { int r_flags; /* any additional flags for the osd */ u32 r_sent; /* >0 if r_request is sending/sent */ int r_got_reply; + int r_linger; struct ceph_osd_client *r_osdc; struct kref r_kref; @@ -89,6 +93,26 @@ struct ceph_osd_request { struct ceph_pagelist *r_trail; /* trailing part of the data */ }; +struct ceph_osd_event { + u64 cookie; + int one_shot; + struct ceph_osd_client *osdc; + void (*cb)(u64, u64, u8, void *); + void *data; + struct rb_node node; + struct list_head osd_node; + struct kref kref; + struct completion completion; +}; + +struct ceph_osd_event_work { + struct work_struct work; + struct ceph_osd_event *event; + u64 ver; + u64 notify_id; + u8 opcode; +}; + struct ceph_osd_client { struct ceph_client *client; @@ -106,6 +130,7 @@ struct ceph_osd_client { struct list_head req_lru; /* in-flight lru */ struct list_head req_unsent; /* unsent/need-resend queue */ struct list_head req_notarget; /* map to no osd */ + struct list_head req_linger; /* lingering requests */ int num_requests; struct delayed_work timeout_work; struct delayed_work osds_timeout_work; @@ -117,6 +142,12 @@ struct ceph_osd_client { struct ceph_msgpool msgpool_op; struct ceph_msgpool msgpool_op_reply; + + spinlock_t event_lock; + struct rb_root event_tree; + u64 event_count; + + struct workqueue_struct *notify_wq; }; struct ceph_osd_req_op { @@ -151,6 +182,13 @@ struct ceph_osd_req_op { struct { u64 snapid; } snap; + struct { + u64 cookie; + u64 ver; + __u8 flag; + u32 prot_ver; + u32 timeout; + } watch; }; u32 payload_len; }; @@ -199,6 +237,11 @@ extern struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *, bool use_mempool, int num_reply, int page_align); +extern void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc, + struct ceph_osd_request *req); +extern void ceph_osdc_unregister_linger_request(struct ceph_osd_client *osdc, + struct ceph_osd_request *req); + static inline void ceph_osdc_get_request(struct ceph_osd_request *req) { kref_get(&req->r_kref); @@ -234,5 +277,14 @@ extern int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct page **pages, int nr_pages, int flags, int do_sync, bool nofail); +/* watch/notify events */ +extern int ceph_osdc_create_event(struct ceph_osd_client *osdc, + void (*event_cb)(u64, u64, u8, void *), + int one_shot, void *data, + struct ceph_osd_event **pevent); +extern void ceph_osdc_cancel_event(struct ceph_osd_event *event); +extern int ceph_osdc_wait_event(struct ceph_osd_event *event, + unsigned long timeout); +extern void ceph_osdc_put_event(struct ceph_osd_event *event); #endif -- cgit v1.2.3 From 4fdccdfbb4652a7bbac8adbce7449eb093775118 Mon Sep 17 00:00:00 2001 From: Christoph Lameter Date: Tue, 22 Mar 2011 13:35:00 -0500 Subject: slub: Add statistics for this_cmpxchg_double failures Add some statistics for debugging. Signed-off-by: Christoph Lameter Signed-off-by: Pekka Enberg --- include/linux/slub_def.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h index 90fbb6d87e11..45ca123e8002 100644 --- a/include/linux/slub_def.h +++ b/include/linux/slub_def.h @@ -32,6 +32,7 @@ enum stat_item { DEACTIVATE_TO_TAIL, /* Cpu slab was moved to the tail of partials */ DEACTIVATE_REMOTE_FREES,/* Slab contained remotely freed objects */ ORDER_FALLBACK, /* Number of times fallback was necessary */ + CMPXCHG_DOUBLE_CPU_FAIL,/* Failure of this_cpu_cmpxchg_double */ NR_SLUB_STAT_ITEMS }; struct kmem_cache_cpu { -- cgit v1.2.3 From f23eb2b2b28547fc70df82dd5049eb39bec5ba12 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 22 Mar 2011 16:17:32 -0700 Subject: tty: stop using "delayed_work" in the tty layer Using delayed-work for tty flip buffers ends up causing us to wait for the next tick to complete some actions. That's usually not all that noticeable, but for certain latency-critical workloads it ends up being totally unacceptable. As an extreme case of this, passing a token back-and-forth over a pty will take two ticks per iteration, so even just a thousand iterations will take 8 seconds assuming a common 250Hz configuration. Avoiding the whole delayed work issue brings that ping-pong test-case down to 0.009s on my machine. In more practical terms, this latency has been a performance problem for things like dive computer simulators (simulating the serial interface using the ptys) and for other environments (Alan mentions a CP/M emulator). Reported-by: Jef Driesen Acked-by: Greg KH Acked-by: Alan Cox Signed-off-by: Linus Torvalds --- include/linux/kbd_kern.h | 2 +- include/linux/tty.h | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/kbd_kern.h b/include/linux/kbd_kern.h index 4b0761cc7dd9..ec2d17bc1f1e 100644 --- a/include/linux/kbd_kern.h +++ b/include/linux/kbd_kern.h @@ -159,7 +159,7 @@ static inline void con_schedule_flip(struct tty_struct *t) if (t->buf.tail != NULL) t->buf.tail->commit = t->buf.tail->used; spin_unlock_irqrestore(&t->buf.lock, flags); - schedule_delayed_work(&t->buf.work, 0); + schedule_work(&t->buf.work); } #endif diff --git a/include/linux/tty.h b/include/linux/tty.h index 4e53d4641b38..9f469c700550 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -82,7 +82,7 @@ struct tty_buffer { struct tty_bufhead { - struct delayed_work work; + struct work_struct work; spinlock_t lock; struct tty_buffer *head; /* Queue head */ struct tty_buffer *tail; /* Active buffer */ -- cgit v1.2.3 From b1e6b7068f026e88257c20522555c78122e5a14d Mon Sep 17 00:00:00 2001 From: Shreshtha Kumar Sahu Date: Tue, 22 Mar 2011 16:30:16 -0700 Subject: leds: add driver for LM3530 ALS Simple backlight driver for National Semiconductor LM3530. Presently only manual mode is supported, PWM and ALS support to be added. Signed-off-by: Shreshtha Kumar Sahu Cc: Linus Walleij Cc: Richard Purdie Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/led-lm3530.h | 107 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 107 insertions(+) create mode 100644 include/linux/led-lm3530.h (limited to 'include/linux') diff --git a/include/linux/led-lm3530.h b/include/linux/led-lm3530.h new file mode 100644 index 000000000000..bb69d20da0dc --- /dev/null +++ b/include/linux/led-lm3530.h @@ -0,0 +1,107 @@ +/* + * Copyright (C) 2011 ST-Ericsson SA. + * Copyright (C) 2009 Motorola, Inc. + * + * License Terms: GNU General Public License v2 + * + * Simple driver for National Semiconductor LM35330 Backlight driver chip + * + * Author: Shreshtha Kumar SAHU + * based on leds-lm3530.c by Dan Murphy + */ + +#ifndef _LINUX_LED_LM3530_H__ +#define _LINUX_LED_LM3530_H__ + +#define LM3530_FS_CURR_5mA (0) /* Full Scale Current */ +#define LM3530_FS_CURR_8mA (1) +#define LM3530_FS_CURR_12mA (2) +#define LM3530_FS_CURR_15mA (3) +#define LM3530_FS_CURR_19mA (4) +#define LM3530_FS_CURR_22mA (5) +#define LM3530_FS_CURR_26mA (6) +#define LM3530_FS_CURR_29mA (7) + +#define LM3530_ALS_AVRG_TIME_32ms (0) /* ALS Averaging Time */ +#define LM3530_ALS_AVRG_TIME_64ms (1) +#define LM3530_ALS_AVRG_TIME_128ms (2) +#define LM3530_ALS_AVRG_TIME_256ms (3) +#define LM3530_ALS_AVRG_TIME_512ms (4) +#define LM3530_ALS_AVRG_TIME_1024ms (5) +#define LM3530_ALS_AVRG_TIME_2048ms (6) +#define LM3530_ALS_AVRG_TIME_4096ms (7) + +#define LM3530_RAMP_TIME_1ms (0) /* Brigtness Ramp Time */ +#define LM3530_RAMP_TIME_130ms (1) /* Max to 0 and vice versa */ +#define LM3530_RAMP_TIME_260ms (2) +#define LM3530_RAMP_TIME_520ms (3) +#define LM3530_RAMP_TIME_1s (4) +#define LM3530_RAMP_TIME_2s (5) +#define LM3530_RAMP_TIME_4s (6) +#define LM3530_RAMP_TIME_8s (7) + +/* ALS Resistor Select */ +#define LM3530_ALS_IMPD_Z (0x00) /* ALS Impedence */ +#define LM3530_ALS_IMPD_13_53kOhm (0x01) +#define LM3530_ALS_IMPD_9_01kOhm (0x02) +#define LM3530_ALS_IMPD_5_41kOhm (0x03) +#define LM3530_ALS_IMPD_2_27kOhm (0x04) +#define LM3530_ALS_IMPD_1_94kOhm (0x05) +#define LM3530_ALS_IMPD_1_81kOhm (0x06) +#define LM3530_ALS_IMPD_1_6kOhm (0x07) +#define LM3530_ALS_IMPD_1_138kOhm (0x08) +#define LM3530_ALS_IMPD_1_05kOhm (0x09) +#define LM3530_ALS_IMPD_1_011kOhm (0x0A) +#define LM3530_ALS_IMPD_941Ohm (0x0B) +#define LM3530_ALS_IMPD_759Ohm (0x0C) +#define LM3530_ALS_IMPD_719Ohm (0x0D) +#define LM3530_ALS_IMPD_700Ohm (0x0E) +#define LM3530_ALS_IMPD_667Ohm (0x0F) + +enum lm3530_mode { + LM3530_BL_MODE_MANUAL = 0, /* "man" */ + LM3530_BL_MODE_ALS, /* "als" */ + LM3530_BL_MODE_PWM, /* "pwm" */ +}; + +/* ALS input select */ +enum lm3530_als_mode { + LM3530_INPUT_AVRG = 0, /* ALS1 and ALS2 input average */ + LM3530_INPUT_ALS1, /* ALS1 Input */ + LM3530_INPUT_ALS2, /* ALS2 Input */ + LM3530_INPUT_CEIL, /* Max of ALS1 and ALS2 */ +}; + +/** + * struct lm3530_platform_data + * @mode: mode of operation i.e. Manual, ALS or PWM + * @als_input_mode: select source of ALS input - ALS1/2 or average + * @max_current: full scale LED current + * @pwm_pol_hi: PWM input polarity - active high/active low + * @als_avrg_time: ALS input averaging time + * @brt_ramp_law: brightness mapping mode - exponential/linear + * @brt_ramp_fall: rate of fall of led current + * @brt_ramp_rise: rate of rise of led current + * @als1_resistor_sel: internal resistance from ALS1 input to ground + * @als2_resistor_sel: internal resistance from ALS2 input to ground + * @brt_val: brightness value (0-255) + */ +struct lm3530_platform_data { + enum lm3530_mode mode; + enum lm3530_als_mode als_input_mode; + + u8 max_current; + bool pwm_pol_hi; + u8 als_avrg_time; + + bool brt_ramp_law; + u8 brt_ramp_fall; + u8 brt_ramp_rise; + + u8 als1_resistor_sel; + u8 als2_resistor_sel; + + u8 brt_val; +}; + +#endif /* _LINUX_LED_LM3530_H__ */ -- cgit v1.2.3 From 9517f925f2eb9ffca78b3f0f9389fc675bcb572c Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Tue, 22 Mar 2011 16:30:17 -0700 Subject: leds: make *struct gpio_led_platform_data.leds const MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit And fix a typo. Signed-off-by: Uwe Kleine-König Cc: Lars-Peter Clausen Cc: Richard Purdie Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/leds.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/leds.h b/include/linux/leds.h index 0f19df9e37b0..383811d9af83 100644 --- a/include/linux/leds.h +++ b/include/linux/leds.h @@ -194,11 +194,11 @@ struct gpio_led { struct gpio_led_platform_data { int num_leds; - struct gpio_led *leds; + const struct gpio_led *leds; #define GPIO_LED_NO_BLINK_LOW 0 /* No blink GPIO state low */ #define GPIO_LED_NO_BLINK_HIGH 1 /* No blink GPIO state high */ -#define GPIO_LED_BLINK 2 /* Plase, blink */ +#define GPIO_LED_BLINK 2 /* Please, blink */ int (*gpio_blink_set)(unsigned gpio, int state, unsigned long *delay_on, unsigned long *delay_off); -- cgit v1.2.3 From bb7ca747f8d6243b3943c5b133048652020f4a50 Mon Sep 17 00:00:00 2001 From: Matthew Garrett Date: Tue, 22 Mar 2011 16:30:21 -0700 Subject: backlight: add backlight type There may be multiple ways of controlling the backlight on a given machine. Allow drivers to expose the type of interface they are providing, making it possible for userspace to make appropriate policy decisions. Signed-off-by: Matthew Garrett Cc: Richard Purdie Cc: Chris Wilson Cc: David Airlie Cc: Alex Deucher Cc: Ben Skeggs Cc: Zhang Rui Cc: Len Brown Cc: Jesse Barnes Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/backlight.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include/linux') diff --git a/include/linux/backlight.h b/include/linux/backlight.h index 4a3d52e545e1..5ffc6dda4675 100644 --- a/include/linux/backlight.h +++ b/include/linux/backlight.h @@ -32,6 +32,13 @@ enum backlight_update_reason { BACKLIGHT_UPDATE_SYSFS, }; +enum backlight_type { + BACKLIGHT_RAW = 1, + BACKLIGHT_PLATFORM, + BACKLIGHT_FIRMWARE, + BACKLIGHT_TYPE_MAX, +}; + struct backlight_device; struct fb_info; @@ -62,6 +69,8 @@ struct backlight_properties { /* FB Blanking active? (values as for power) */ /* Due to be removed, please use (state & BL_CORE_FBBLANK) */ int fb_blank; + /* Backlight type */ + enum backlight_type type; /* Flags used to signal drivers of state changes */ /* Upper 4 bits are reserved for driver internal use */ unsigned int state; -- cgit v1.2.3 From ef0a5e80f56f6409e957e7117da9551c3d3ff239 Mon Sep 17 00:00:00 2001 From: Robert Morell Date: Tue, 22 Mar 2011 16:30:31 -0700 Subject: pwm_backlight: add check_fb() hook In systems with multiple framebuffer devices, one of the devices might be blanked while another is unblanked. In order for the backlight blanking logic to know whether to turn off the backlight for a particular framebuffer's blanking notification, it needs to be able to check if a given framebuffer device corresponds to the backlight. This plumbs the check_fb hook from core backlight through the pwm_backlight helper to allow platform code to plug in a check_fb hook. Signed-off-by: Robert Morell Cc: Richard Purdie Cc: Arun Murthy Cc: Linus Walleij Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/pwm_backlight.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pwm_backlight.h b/include/linux/pwm_backlight.h index e031e1a486d9..5e3e25a3c9c3 100644 --- a/include/linux/pwm_backlight.h +++ b/include/linux/pwm_backlight.h @@ -4,6 +4,8 @@ #ifndef __LINUX_PWM_BACKLIGHT_H #define __LINUX_PWM_BACKLIGHT_H +#include + struct platform_pwm_backlight_data { int pwm_id; unsigned int max_brightness; @@ -13,6 +15,7 @@ struct platform_pwm_backlight_data { int (*init)(struct device *dev); int (*notify)(struct device *dev, int brightness); void (*exit)(struct device *dev); + int (*check_fb)(struct device *dev, struct fb_info *info); }; #endif -- cgit v1.2.3 From d527caf22e48480b102c7c6ee5b9ba12170148f7 Mon Sep 17 00:00:00 2001 From: Andrea Arcangeli Date: Tue, 22 Mar 2011 16:30:38 -0700 Subject: mm: compaction: prevent kswapd compacting memory to reduce CPU usage This patch reverts 5a03b051 ("thp: use compaction in kswapd for GFP_ATOMIC order > 0") due to reports stating that kswapd CPU usage was higher and IRQs were being disabled more frequently. This was reported at http://www.spinics.net/linux/fedora/alsa-user/msg09885.html. Without this patch applied, CPU usage by kswapd hovers around the 20% mark according to the tester (Arthur Marsh: http://www.spinics.net/linux/fedora/alsa-user/msg09899.html). With this patch applied, it's around 2%. The problem is not related to THP which specifies __GFP_NO_KSWAPD but is triggered by high-order allocations hitting the low watermark for their order and waking kswapd on kernels with CONFIG_COMPACTION set. The most common trigger for this is network cards configured for jumbo frames but it's also possible it'll be triggered by fork-heavy workloads (order-1) and some wireless cards which depend on order-1 allocations. The symptoms for the user will be high CPU usage by kswapd in low-memory situations which could be confused with another writeback problem. While a patch like 5a03b051 may be reintroduced in the future, this patch plays it safe for now and reverts it. [mel@csn.ul.ie: Beefed up the changelog] Signed-off-by: Andrea Arcangeli Signed-off-by: Mel Gorman Reported-by: Arthur Marsh Tested-by: Arthur Marsh Cc: [2.6.38.1] Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/compaction.h | 9 ++------- 1 file changed, 2 insertions(+), 7 deletions(-) (limited to 'include/linux') diff --git a/include/linux/compaction.h b/include/linux/compaction.h index dfa2ed4c0d26..cc9f7a428649 100644 --- a/include/linux/compaction.h +++ b/include/linux/compaction.h @@ -11,9 +11,6 @@ /* The full zone was compacted */ #define COMPACT_COMPLETE 3 -#define COMPACT_MODE_DIRECT_RECLAIM 0 -#define COMPACT_MODE_KSWAPD 1 - #ifdef CONFIG_COMPACTION extern int sysctl_compact_memory; extern int sysctl_compaction_handler(struct ctl_table *table, int write, @@ -28,8 +25,7 @@ extern unsigned long try_to_compact_pages(struct zonelist *zonelist, bool sync); extern unsigned long compaction_suitable(struct zone *zone, int order); extern unsigned long compact_zone_order(struct zone *zone, int order, - gfp_t gfp_mask, bool sync, - int compact_mode); + gfp_t gfp_mask, bool sync); /* Do not skip compaction more than 64 times */ #define COMPACT_MAX_DEFER_SHIFT 6 @@ -74,8 +70,7 @@ static inline unsigned long compaction_suitable(struct zone *zone, int order) } static inline unsigned long compact_zone_order(struct zone *zone, int order, - gfp_t gfp_mask, bool sync, - int compact_mode) + gfp_t gfp_mask, bool sync) { return COMPACT_CONTINUE; } -- cgit v1.2.3 From 207205a2ba2655652fe46a60b49838af6c16a919 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Tue, 22 Mar 2011 16:30:44 -0700 Subject: kthread: NUMA aware kthread_create_on_node() All kthreads being created from a single helper task, they all use memory from a single node for their kernel stack and task struct. This patch suite creates kthread_create_on_node(), adding a 'cpu' parameter to parameters already used by kthread_create(). This parameter serves in allocating memory for the new kthread on its memory node if possible. Signed-off-by: Eric Dumazet Acked-by: David S. Miller Reviewed-by: Andi Kleen Acked-by: Rusty Russell Cc: Tejun Heo Cc: Tony Luck Cc: Fenghua Yu Cc: David Howells Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/kthread.h | 14 ++++++++++---- include/linux/sched.h | 1 + 2 files changed, 11 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/kthread.h b/include/linux/kthread.h index 7ff16f7d3ed4..1e923e5e88e8 100644 --- a/include/linux/kthread.h +++ b/include/linux/kthread.h @@ -4,10 +4,15 @@ #include #include -struct task_struct *kthread_create(int (*threadfn)(void *data), - void *data, - const char namefmt[], ...) - __attribute__((format(printf, 3, 4))); +struct task_struct *kthread_create_on_node(int (*threadfn)(void *data), + void *data, + int node, + const char namefmt[], ...) + __attribute__((format(printf, 4, 5))); + +#define kthread_create(threadfn, data, namefmt, arg...) \ + kthread_create_on_node(threadfn, data, -1, namefmt, ##arg) + /** * kthread_run - create and wake a thread. @@ -34,6 +39,7 @@ void *kthread_data(struct task_struct *k); int kthreadd(void *unused); extern struct task_struct *kthreadd_task; +extern int tsk_fork_get_node(struct task_struct *tsk); /* * Simple work processor based on kthread. diff --git a/include/linux/sched.h b/include/linux/sched.h index c15936fe998b..4b601be3dace 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1471,6 +1471,7 @@ struct task_struct { #ifdef CONFIG_NUMA struct mempolicy *mempolicy; /* Protected by alloc_lock */ short il_next; + short pref_node_fork; #endif atomic_t fs_excl; /* holding fs exclusive resources */ struct rcu_head rcu; -- cgit v1.2.3 From ddd588b5dd55f14320379961e47683db4e4c1d90 Mon Sep 17 00:00:00 2001 From: David Rientjes Date: Tue, 22 Mar 2011 16:30:46 -0700 Subject: oom: suppress nodes that are not allowed from meminfo on oom kill The oom killer is extremely verbose for machines with a large number of cpus and/or nodes. This verbosity can often be harmful if it causes other important messages to be scrolled from the kernel log and incurs a signicant time delay, specifically for kernels with CONFIG_NODES_SHIFT > 8. This patch causes only memory information to be displayed for nodes that are allowed by current's cpuset when dumping the VM state. Information for all other nodes is irrelevant to the oom condition; we don't care if there's an abundance of memory elsewhere if we can't access it. This only affects the behavior of dumping memory information when an oom is triggered. Other dumps, such as for sysrq+m, still display the unfiltered form when using the existing show_mem() interface. Additionally, the per-cpu pageset statistics are extremely verbose in oom killer output, so it is now suppressed. This removes nodes_weight(current->mems_allowed) * (1 + nr_cpus) lines from the oom killer output. Callers may use __show_mem(SHOW_MEM_FILTER_NODES) to filter disallowed nodes. Signed-off-by: David Rientjes Cc: Mel Gorman Cc: KAMEZAWA Hiroyuki Cc: KOSAKI Motohiro Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index 581703d86fbd..1f82adc85352 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -859,7 +859,14 @@ extern void pagefault_out_of_memory(void); #define offset_in_page(p) ((unsigned long)(p) & ~PAGE_MASK) +/* + * Flags passed to __show_mem() and __show_free_areas() to suppress output in + * various contexts. + */ +#define SHOW_MEM_FILTER_NODES (0x0001u) /* filter disallowed nodes */ + extern void show_free_areas(void); +extern void __show_free_areas(unsigned int flags); int shmem_lock(struct file *file, int lock, struct user_struct *user); struct file *shmem_file_setup(const char *name, loff_t size, unsigned long flags); @@ -1348,6 +1355,7 @@ extern void calculate_zone_inactive_ratio(struct zone *zone); extern void mem_init(void); extern void __init mmap_init(void); extern void show_mem(void); +extern void __show_mem(unsigned int flags); extern void si_meminfo(struct sysinfo * val); extern void si_meminfo_node(struct sysinfo *val, int nid); extern int after_bootmem; -- cgit v1.2.3 From 318b275fbca1ab9ec0862de71420e0e92c3d1aa7 Mon Sep 17 00:00:00 2001 From: Gleb Natapov Date: Tue, 22 Mar 2011 16:30:51 -0700 Subject: mm: allow GUP to fail instead of waiting on a page GUP user may want to try to acquire a reference to a page if it is already in memory, but not if IO, to bring it in, is needed. For example KVM may tell vcpu to schedule another guest process if current one is trying to access swapped out page. Meanwhile, the page will be swapped in and the guest process, that depends on it, will be able to run again. This patch adds FAULT_FLAG_RETRY_NOWAIT (suggested by Linus) and FOLL_NOWAIT follow_page flags. FAULT_FLAG_RETRY_NOWAIT, when used in conjunction with VM_FAULT_ALLOW_RETRY, indicates to handle_mm_fault that it shouldn't drop mmap_sem and wait on a page, but return VM_FAULT_RETRY instead. [akpm@linux-foundation.org: improve FOLL_NOWAIT comment] Signed-off-by: Gleb Natapov Cc: Linus Torvalds Cc: Hugh Dickins Acked-by: Rik van Riel Cc: Michel Lespinasse Cc: Avi Kivity Cc: Marcelo Tosatti Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index 1f82adc85352..901435e3a9a9 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -151,6 +151,7 @@ extern pgprot_t protection_map[16]; #define FAULT_FLAG_NONLINEAR 0x02 /* Fault was via a nonlinear mapping */ #define FAULT_FLAG_MKWRITE 0x04 /* Fault was mkwrite of existing pte */ #define FAULT_FLAG_ALLOW_RETRY 0x08 /* Retry fault if blocking */ +#define FAULT_FLAG_RETRY_NOWAIT 0x10 /* Don't drop mmap_sem and wait when retrying */ /* * This interface is used by x86 PAT code to identify a pfn mapping that is @@ -1545,6 +1546,8 @@ struct page *follow_page(struct vm_area_struct *, unsigned long address, #define FOLL_GET 0x04 /* do get_page on page */ #define FOLL_DUMP 0x08 /* give error on hole if it would be zero */ #define FOLL_FORCE 0x10 /* get_user_pages read/write w/o permission */ +#define FOLL_NOWAIT 0x20 /* if a disk transfer is needed, start the IO + * and return without waiting upon it */ #define FOLL_MLOCK 0x40 /* mark page as mlocked */ #define FOLL_SPLIT 0x80 /* don't return transhuge pages, split them */ #define FOLL_HWPOISON 0x100 /* check page is hwpoisoned */ -- cgit v1.2.3 From ef6a3c63112e865d632ff7c478ba7c7160cad0d1 Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Tue, 22 Mar 2011 16:30:52 -0700 Subject: mm: add replace_page_cache_page() function This function basically does: remove_from_page_cache(old); page_cache_release(old); add_to_page_cache_locked(new); Except it does this atomically, so there's no possibility for the "add" to fail because of a race. If memory cgroups are enabled, then the memory cgroup charge is also moved from the old page to the new. This function is currently used by fuse to move pages into the page cache on read, instead of copying the page contents. [minchan.kim@gmail.com: add freepage() hook to replace_page_cache_page()] Signed-off-by: Miklos Szeredi Acked-by: Rik van Riel Acked-by: KAMEZAWA Hiroyuki Cc: Mel Gorman Signed-off-by: Minchan Kim Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/memcontrol.h | 4 ++-- include/linux/pagemap.h | 1 + 2 files changed, 3 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index f512e189be5a..a1a1e5384f6e 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -96,7 +96,7 @@ extern struct cgroup_subsys_state *mem_cgroup_css(struct mem_cgroup *mem); extern int mem_cgroup_prepare_migration(struct page *page, - struct page *newpage, struct mem_cgroup **ptr); + struct page *newpage, struct mem_cgroup **ptr, gfp_t gfp_mask); extern void mem_cgroup_end_migration(struct mem_cgroup *mem, struct page *oldpage, struct page *newpage, bool migration_ok); @@ -249,7 +249,7 @@ static inline struct cgroup_subsys_state *mem_cgroup_css(struct mem_cgroup *mem) static inline int mem_cgroup_prepare_migration(struct page *page, struct page *newpage, - struct mem_cgroup **ptr) + struct mem_cgroup **ptr, gfp_t gfp_mask) { return 0; } diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index 9c66e994540f..26946ad483bf 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -457,6 +457,7 @@ int add_to_page_cache_lru(struct page *page, struct address_space *mapping, pgoff_t index, gfp_t gfp_mask); extern void remove_from_page_cache(struct page *page); extern void __remove_from_page_cache(struct page *page); +int replace_page_cache_page(struct page *old, struct page *new, gfp_t gfp_mask); /* * Like add_to_page_cache_locked, but used to add newly allocated pages: -- cgit v1.2.3 From 97cecb5a254fec22d28ef32235d888bfbfd7c783 Mon Sep 17 00:00:00 2001 From: Minchan Kim Date: Tue, 22 Mar 2011 16:30:53 -0700 Subject: mm: introduce delete_from_page_cache() Presently we increase the page refcount in add_to_page_cache() but don't decrease it in remove_from_page_cache(). Such asymmetry adds confusion, requiring that callers notice it and a comment explaining why they release a page reference. It's not a good API. A long time ago, Hugh tried it (http://lkml.org/lkml/2004/10/24/140) but gave up because reiser4's drop_page() had to unlock the page between removing it from page cache and doing the page_cache_release(). But now the situation is changed. I think at least things in current mainline don't have any obstacles. The problem is for out-of-mainline filesystems - if they have done such things as reiser4, this patch could be a problem but they will discover this at compile time since we remove remove_from_page_cache(). This patch: This function works as just wrapper remove_from_page_cache(). The difference is that it decreases page references in itself. So caller have to make sure it has a page reference before calling. This patch is ready for removing remove_from_page_cache(). Signed-off-by: Minchan Kim Cc: Christoph Hellwig Acked-by: Hugh Dickins Acked-by: Mel Gorman Reviewed-by: KAMEZAWA Hiroyuki Reviewed-by: Johannes Weiner Reviewed-by: KOSAKI Motohiro Cc: Edward Shishkin Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/pagemap.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index 26946ad483bf..0aa258f4678d 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -455,6 +455,7 @@ int add_to_page_cache_locked(struct page *page, struct address_space *mapping, pgoff_t index, gfp_t gfp_mask); int add_to_page_cache_lru(struct page *page, struct address_space *mapping, pgoff_t index, gfp_t gfp_mask); +extern void delete_from_page_cache(struct page *page); extern void remove_from_page_cache(struct page *page); extern void __remove_from_page_cache(struct page *page); int replace_page_cache_page(struct page *old, struct page *new, gfp_t gfp_mask); -- cgit v1.2.3 From 702cfbf93aaf3a091b0c64c8766c1ade0a820c38 Mon Sep 17 00:00:00 2001 From: Minchan Kim Date: Tue, 22 Mar 2011 16:32:43 -0700 Subject: mm: goodbye remove_from_page_cache() Now delete_from_page_cache() replaces remove_from_page_cache(). So we remove remove_from_page_cache so fs or something out of mainline will notice it when compile time and can fix it. Signed-off-by: Minchan Kim Cc: Christoph Hellwig Acked-by: Hugh Dickins Acked-by: Mel Gorman Reviewed-by: KAMEZAWA Hiroyuki Reviewed-by: Johannes Weiner Reviewed-by: KOSAKI Motohiro Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/pagemap.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index 0aa258f4678d..ea36ff29a51a 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -456,7 +456,6 @@ int add_to_page_cache_locked(struct page *page, struct address_space *mapping, int add_to_page_cache_lru(struct page *page, struct address_space *mapping, pgoff_t index, gfp_t gfp_mask); extern void delete_from_page_cache(struct page *page); -extern void remove_from_page_cache(struct page *page); extern void __remove_from_page_cache(struct page *page); int replace_page_cache_page(struct page *old, struct page *new, gfp_t gfp_mask); -- cgit v1.2.3 From e64a782fec684c29a8204c51b3cb554dce588592 Mon Sep 17 00:00:00 2001 From: Minchan Kim Date: Tue, 22 Mar 2011 16:32:44 -0700 Subject: mm: change __remove_from_page_cache() Now we renamed remove_from_page_cache with delete_from_page_cache. As consistency of __remove_from_swap_cache and remove_from_swap_cache, we change internal page cache handling function name, too. Signed-off-by: Minchan Kim Cc: Christoph Hellwig Acked-by: Hugh Dickins Acked-by: Mel Gorman Reviewed-by: KAMEZAWA Hiroyuki Reviewed-by: Johannes Weiner Reviewed-by: KOSAKI Motohiro Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/pagemap.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index ea36ff29a51a..29ebba54c238 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -456,7 +456,7 @@ int add_to_page_cache_locked(struct page *page, struct address_space *mapping, int add_to_page_cache_lru(struct page *page, struct address_space *mapping, pgoff_t index, gfp_t gfp_mask); extern void delete_from_page_cache(struct page *page); -extern void __remove_from_page_cache(struct page *page); +extern void __delete_from_page_cache(struct page *page); int replace_page_cache_page(struct page *old, struct page *new, gfp_t gfp_mask); /* -- cgit v1.2.3 From 9e60109f125013b6c571f399a15a8b0fe1ffa4e6 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Tue, 22 Mar 2011 16:32:46 -0700 Subject: mm: rename drop_anon_vma() to put_anon_vma() The normal code pattern used in the kernel is: get/put. Signed-off-by: Peter Zijlstra Reviewed-by: KAMEZAWA Hiroyuki Acked-by: Hugh Dickins Reviewed-by: Rik van Riel Acked-by: Mel Gorman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/rmap.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/rmap.h b/include/linux/rmap.h index e9fd04ca1e51..b9b23ddca63a 100644 --- a/include/linux/rmap.h +++ b/include/linux/rmap.h @@ -87,7 +87,7 @@ static inline void get_anon_vma(struct anon_vma *anon_vma) atomic_inc(&anon_vma->external_refcount); } -void drop_anon_vma(struct anon_vma *); +void put_anon_vma(struct anon_vma *); #else static inline void anonvma_external_refcount_init(struct anon_vma *anon_vma) { @@ -102,7 +102,7 @@ static inline void get_anon_vma(struct anon_vma *anon_vma) { } -static inline void drop_anon_vma(struct anon_vma *anon_vma) +static inline void put_anon_vma(struct anon_vma *anon_vma) { } #endif /* CONFIG_KSM */ -- cgit v1.2.3 From 83813267c699ab11cc65a6d9d0f42db42f0862b3 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Tue, 22 Mar 2011 16:32:48 -0700 Subject: mm: move anon_vma ref out from under CONFIG_foo We need the anon_vma refcount unconditionally to simplify the anon_vma lifetime rules. Signed-off-by: Peter Zijlstra Acked-by: Mel Gorman Reviewed-by: KAMEZAWA Hiroyuki Acked-by: Hugh Dickins Acked-by: Rik van Riel Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/rmap.h | 40 ++++------------------------------------ 1 file changed, 4 insertions(+), 36 deletions(-) (limited to 'include/linux') diff --git a/include/linux/rmap.h b/include/linux/rmap.h index b9b23ddca63a..fd56111a52c1 100644 --- a/include/linux/rmap.h +++ b/include/linux/rmap.h @@ -27,18 +27,15 @@ struct anon_vma { struct anon_vma *root; /* Root of this anon_vma tree */ spinlock_t lock; /* Serialize access to vma list */ -#if defined(CONFIG_KSM) || defined(CONFIG_MIGRATION) - /* - * The external_refcount is taken by either KSM or page migration - * to take a reference to an anon_vma when there is no + * The refcount is taken on an anon_vma when there is no * guarantee that the vma of page tables will exist for * the duration of the operation. A caller that takes * the reference is responsible for clearing up the * anon_vma if they are the last user on release */ - atomic_t external_refcount; -#endif + atomic_t refcount; + /* * NOTE: the LSB of the head.next is set by * mm_take_all_locks() _after_ taking the above lock. So the @@ -71,41 +68,12 @@ struct anon_vma_chain { }; #ifdef CONFIG_MMU -#if defined(CONFIG_KSM) || defined(CONFIG_MIGRATION) -static inline void anonvma_external_refcount_init(struct anon_vma *anon_vma) -{ - atomic_set(&anon_vma->external_refcount, 0); -} - -static inline int anonvma_external_refcount(struct anon_vma *anon_vma) -{ - return atomic_read(&anon_vma->external_refcount); -} - static inline void get_anon_vma(struct anon_vma *anon_vma) { - atomic_inc(&anon_vma->external_refcount); + atomic_inc(&anon_vma->refcount); } void put_anon_vma(struct anon_vma *); -#else -static inline void anonvma_external_refcount_init(struct anon_vma *anon_vma) -{ -} - -static inline int anonvma_external_refcount(struct anon_vma *anon_vma) -{ - return 0; -} - -static inline void get_anon_vma(struct anon_vma *anon_vma) -{ -} - -static inline void put_anon_vma(struct anon_vma *anon_vma) -{ -} -#endif /* CONFIG_KSM */ static inline struct anon_vma *page_anon_vma(struct page *page) { -- cgit v1.2.3 From 01d8b20dec5f4019283e244aba50ba86fe6ead6e Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Tue, 22 Mar 2011 16:32:49 -0700 Subject: mm: simplify anon_vma refcounts This patch changes the anon_vma refcount to be 0 when the object is free. It does this by adding 1 ref to being in use in the anon_vma structure (iow. the anon_vma->head list is not empty). This allows a simpler release scheme without having to check both the refcount and the list as well as avoids taking a ref for each entry on the list. Signed-off-by: Peter Zijlstra Reviewed-by: KAMEZAWA Hiroyuki Acked-by: Hugh Dickins Acked-by: Mel Gorman Acked-by: Rik van Riel Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/rmap.h | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/rmap.h b/include/linux/rmap.h index fd56111a52c1..830e65dc01ee 100644 --- a/include/linux/rmap.h +++ b/include/linux/rmap.h @@ -73,7 +73,13 @@ static inline void get_anon_vma(struct anon_vma *anon_vma) atomic_inc(&anon_vma->refcount); } -void put_anon_vma(struct anon_vma *); +void __put_anon_vma(struct anon_vma *anon_vma); + +static inline void put_anon_vma(struct anon_vma *anon_vma) +{ + if (atomic_dec_and_test(&anon_vma->refcount)) + __put_anon_vma(anon_vma); +} static inline struct anon_vma *page_anon_vma(struct page *page) { @@ -116,7 +122,6 @@ void unlink_anon_vmas(struct vm_area_struct *); int anon_vma_clone(struct vm_area_struct *, struct vm_area_struct *); int anon_vma_fork(struct vm_area_struct *, struct vm_area_struct *); void __anon_vma_link(struct vm_area_struct *); -void anon_vma_free(struct anon_vma *); static inline void anon_vma_merge(struct vm_area_struct *vma, struct vm_area_struct *next) @@ -125,6 +130,8 @@ static inline void anon_vma_merge(struct vm_area_struct *vma, unlink_anon_vmas(next); } +struct anon_vma *page_get_anon_vma(struct page *page); + /* * rmap interfaces called when adding or removing pte of page */ -- cgit v1.2.3 From cb240452bfc2ae9de7c840dd0fb3f5b33ce03c31 Mon Sep 17 00:00:00 2001 From: Michel Lespinasse Date: Tue, 22 Mar 2011 16:32:49 -0700 Subject: mm: remove unused TestSetPageLocked() interface TestSetPageLocked() isn't being used anywhere. Also, using it would likely be an error, since the proper interface trylock_page() provides stronger ordering guarantees. Signed-off-by: Michel Lespinasse Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/page-flags.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h index 0db8037e2725..811183de1ef5 100644 --- a/include/linux/page-flags.h +++ b/include/linux/page-flags.h @@ -196,7 +196,7 @@ static inline int __TestClearPage##uname(struct page *page) { return 0; } struct page; /* forward declaration */ -TESTPAGEFLAG(Locked, locked) TESTSETFLAG(Locked, locked) +TESTPAGEFLAG(Locked, locked) PAGEFLAG(Error, error) TESTCLEARFLAG(Error, error) PAGEFLAG(Referenced, referenced) TESTCLEARFLAG(Referenced, referenced) PAGEFLAG(Dirty, dirty) TESTSCFLAG(Dirty, dirty) __CLEARPAGEFLAG(Dirty, dirty) -- cgit v1.2.3 From 481b4bb5e370aa69c1dc276bd08871ec01b41d2a Mon Sep 17 00:00:00 2001 From: Richard Kennedy Date: Tue, 22 Mar 2011 16:32:50 -0700 Subject: mm: mm_struct: remove 16 bytes of alignment padding on 64 bit builds Reorder mm_struct to remove 16 bytes of alignment padding on 64 bit builds. On my config this shrinks mm_struct by enough to fit in one fewer cache lines and allows more objects per slab in mm_struct kmem_cache under SLUB. slabinfo before patch :- Sizes (bytes) Slabs -------------------------------- Object : 848 Total : 9 SlabObj: 896 Full : 2 SlabSiz: 16384 Partial: 5 Loss : 48 CpuSlab: 2 Align : 64 Objects: 18 slabinfo after :- Sizes (bytes) Slabs -------------------------------- Object : 832 Total : 7 SlabObj: 832 Full : 2 SlabSiz: 16384 Partial: 3 Loss : 0 CpuSlab: 2 Align : 64 Objects: 19 Signed-off-by: Richard Kennedy Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm_types.h | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index 26bc4e2cd275..02aa5619709b 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -237,8 +237,9 @@ struct mm_struct { atomic_t mm_users; /* How many users with user space? */ atomic_t mm_count; /* How many references to "struct mm_struct" (users count as 1) */ int map_count; /* number of VMAs */ - struct rw_semaphore mmap_sem; + spinlock_t page_table_lock; /* Protects page tables and some counters */ + struct rw_semaphore mmap_sem; struct list_head mmlist; /* List of maybe swapped mm's. These are globally strung * together off init_mm.mmlist, and are protected @@ -281,6 +282,9 @@ struct mm_struct { unsigned int token_priority; unsigned int last_interval; + /* How many tasks sharing this mm are OOM_DISABLE */ + atomic_t oom_disable_count; + unsigned long flags; /* Must use atomic bitops to access the bits */ struct core_state *core_state; /* coredumping support */ @@ -313,8 +317,6 @@ struct mm_struct { #ifdef CONFIG_TRANSPARENT_HUGEPAGE pgtable_t pmd_huge_pte; /* protected by page_table_lock */ #endif - /* How many tasks sharing this mm are OOM_DISABLE */ - atomic_t oom_disable_count; }; /* Future-safe accessor for struct mm_struct's cpu_vm_mask. */ -- cgit v1.2.3 From 315601809d124d046abd6c3ffa346d0dbd7aa29d Mon Sep 17 00:00:00 2001 From: Minchan Kim Date: Tue, 22 Mar 2011 16:32:52 -0700 Subject: mm: deactivate invalidated pages Recently, there are reported problem about thrashing. (http://marc.info/?l=rsync&m=128885034930933&w=2) It happens by backup workloads(ex, nightly rsync). That's because the workload makes just use-once pages and touches pages twice. It promotes the page into active list so that it results in working set page eviction. Some app developer want to support POSIX_FADV_NOREUSE. But other OSes don't support it, either. (http://marc.info/?l=linux-mm&m=128928979512086&w=2) By other approach, app developers use POSIX_FADV_DONTNEED. But it has a problem. If kernel meets page is writing during invalidate_mapping_pages, it can't work. It makes for application programmer to use it since they always have to sync data before calling fadivse(..POSIX_FADV_DONTNEED) to make sure the pages could be discardable. At last, they can't use deferred write of kernel so that they could see performance loss. (http://insights.oetiker.ch/linux/fadvise.html) In fact, invalidation is very big hint to reclaimer. It means we don't use the page any more. So let's move the writing page into inactive list's head if we can't truncate it right now. Why I move page to head of lru on this patch, Dirty/Writeback page would be flushed sooner or later. It can prevent writeout of pageout which is less effective than flusher's writeout. Originally, I reused lru_demote of Peter with some change so added his Signed-off-by. Signed-off-by: Minchan Kim Reported-by: Ben Gamari Signed-off-by: Peter Zijlstra Acked-by: Rik van Riel Acked-by: Mel Gorman Reviewed-by: KOSAKI Motohiro Cc: Wu Fengguang Acked-by: Johannes Weiner Cc: Nick Piggin Cc: Andrea Arcangeli Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/swap.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/swap.h b/include/linux/swap.h index 4d559325d919..c335055c4253 100644 --- a/include/linux/swap.h +++ b/include/linux/swap.h @@ -215,6 +215,7 @@ extern void mark_page_accessed(struct page *); extern void lru_add_drain(void); extern int lru_add_drain_all(void); extern void rotate_reclaimable_page(struct page *page); +extern void deactivate_page(struct page *page); extern void swap_setup(void); extern void add_page_to_unevictable_list(struct page *page); -- cgit v1.2.3 From 3f58a82943337fb6e79acfa5346719a97d3c0b98 Mon Sep 17 00:00:00 2001 From: Minchan Kim Date: Tue, 22 Mar 2011 16:32:53 -0700 Subject: memcg: move memcg reclaimable page into tail of inactive list The rotate_reclaimable_page function moves just written out pages, which the VM wanted to reclaim, to the end of the inactive list. That way the VM will find those pages first next time it needs to free memory. This patch applies the rule in memcg. It can help to prevent unnecessary working page eviction of memcg. Signed-off-by: Minchan Kim Acked-by: Balbir Singh Acked-by: KAMEZAWA Hiroyuki Reviewed-by: Rik van Riel Cc: KOSAKI Motohiro Acked-by: Johannes Weiner Cc: Andrea Arcangeli Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/memcontrol.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index a1a1e5384f6e..5bb7be2628ca 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -62,6 +62,7 @@ extern int mem_cgroup_cache_charge(struct page *page, struct mm_struct *mm, gfp_t gfp_mask); extern void mem_cgroup_add_lru_list(struct page *page, enum lru_list lru); extern void mem_cgroup_del_lru_list(struct page *page, enum lru_list lru); +extern void mem_cgroup_rotate_reclaimable_page(struct page *page); extern void mem_cgroup_rotate_lru_list(struct page *page, enum lru_list lru); extern void mem_cgroup_del_lru(struct page *page); extern void mem_cgroup_move_lists(struct page *page, @@ -211,6 +212,11 @@ static inline void mem_cgroup_del_lru_list(struct page *page, int lru) return ; } +static inline inline void mem_cgroup_rotate_reclaimable_page(struct page *page) +{ + return ; +} + static inline void mem_cgroup_rotate_lru_list(struct page *page, int lru) { return ; -- cgit v1.2.3 From 033193275b3ffcfe7f3fde7b569f3d207f6cd6a0 Mon Sep 17 00:00:00 2001 From: Dave Hansen Date: Tue, 22 Mar 2011 16:32:56 -0700 Subject: pagewalk: only split huge pages when necessary Right now, if a mm_walk has either ->pte_entry or ->pmd_entry set, it will unconditionally split any transparent huge pages it runs in to. In practice, that means that anyone doing a cat /proc/$pid/smaps will unconditionally break down every huge page in the process and depend on khugepaged to re-collapse it later. This is fairly suboptimal. This patch changes that behavior. It teaches each ->pmd_entry handler (there are five) that they must break down the THPs themselves. Also, the _generic_ code will never break down a THP unless a ->pte_entry handler is actually set. This means that the ->pmd_entry handlers can now choose to deal with THPs without breaking them down. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Dave Hansen Acked-by: Mel Gorman Acked-by: David Rientjes Reviewed-by: Eric B Munson Tested-by: Eric B Munson Cc: Michael J Wolf Cc: Andrea Arcangeli Cc: Johannes Weiner Cc: Matt Mackall Cc: Jeremy Fitzhardinge Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index 901435e3a9a9..294104e0891d 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -914,6 +914,9 @@ unsigned long unmap_vmas(struct mmu_gather **tlb, * @pgd_entry: if set, called for each non-empty PGD (top-level) entry * @pud_entry: if set, called for each non-empty PUD (2nd-level) entry * @pmd_entry: if set, called for each non-empty PMD (3rd-level) entry + * this handler is required to be able to handle + * pmd_trans_huge() pmds. They may simply choose to + * split_huge_page() instead of handling it explicitly. * @pte_entry: if set, called for each non-empty PTE (4th-level) entry * @pte_hole: if set, called for each hole at all levels * @hugetlb_entry: if set, called for each hugetlb entry -- cgit v1.2.3 From 8afdcece4911e51cfff2b50a269418914cab8a3f Mon Sep 17 00:00:00 2001 From: Mel Gorman Date: Tue, 22 Mar 2011 16:33:04 -0700 Subject: mm: vmscan: kswapd should not free an excessive number of pages when balancing small zones When reclaiming for order-0 pages, kswapd requires that all zones be balanced. Each cycle through balance_pgdat() does background ageing on all zones if necessary and applies equal pressure on the inactive zone unless a lot of pages are free already. A "lot of free pages" is defined as a "balance gap" above the high watermark which is currently 7*high_watermark. Historically this was reasonable as min_free_kbytes was small. However, on systems using huge pages, it is recommended that min_free_kbytes is higher and it is tuned with hugeadm --set-recommended-min_free_kbytes. With the introduction of transparent huge page support, this recommended value is also applied. On X86-64 with 4G of memory, min_free_kbytes becomes 67584 so one would expect around 68M of memory to be free. The Normal zone is approximately 35000 pages so under even normal memory pressure such as copying a large file, it gets exhausted quickly. As it is getting exhausted, kswapd applies pressure equally to all zones, including the DMA32 zone. DMA32 is approximately 700,000 pages with a high watermark of around 23,000 pages. In this situation, kswapd will reclaim around (23000*8 where 8 is the high watermark + balance gap of 7 * high watermark) pages or 718M of pages before the zone is ignored. What the user sees is that free memory far higher than it should be. To avoid an excessive number of pages being reclaimed from the larger zones, explicitely defines the "balance gap" to be either 1% of the zone or the low watermark for the zone, whichever is smaller. While kswapd will check all zones to apply pressure, it'll ignore zones that meets the (high_wmark + balance_gap) watermark. To test this, 80G were copied from a partition and the amount of memory being used was recorded. A comparison of a patch and unpatched kernel can be seen at http://www.csn.ul.ie/~mel/postings/minfree-20110222/memory-usage-hydra.ps and shows that kswapd is not reclaiming as much memory with the patch applied. Signed-off-by: Andrea Arcangeli Signed-off-by: Mel Gorman Acked-by: Rik van Riel Cc: Shaohua Li Cc: "Chen, Tim C" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/swap.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include/linux') diff --git a/include/linux/swap.h b/include/linux/swap.h index c335055c4253..ed6ebe690f4a 100644 --- a/include/linux/swap.h +++ b/include/linux/swap.h @@ -155,6 +155,15 @@ enum { #define SWAP_CLUSTER_MAX 32 #define COMPACT_CLUSTER_MAX SWAP_CLUSTER_MAX +/* + * Ratio between the present memory in the zone and the "gap" that + * we're allowing kswapd to shrink in addition to the per-zone high + * wmark, even for zones that already have the high wmark satisfied, + * in order to provide better per-zone lru behavior. We are ok to + * spend not more than 1% of the memory for this zone balancing "gap". + */ +#define KSWAPD_ZONE_BALANCE_GAP_RATIO 100 + #define SWAP_MAP_MAX 0x3e /* Max duplication count, in first swap_map */ #define SWAP_MAP_BAD 0x3f /* Note pageblock is bad, in first swap_map */ #define SWAP_HAS_CACHE 0x40 /* Flag page is cached, in first swap_map */ -- cgit v1.2.3 From 78afd5612deb8268bafc8b6507d72341d5ed9aac Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Tue, 22 Mar 2011 16:33:12 -0700 Subject: mm: add __GFP_OTHER_NODE flag Add a new __GFP_OTHER_NODE flag to tell the low level numa statistics in zone_statistics() that an allocation is on behalf of another thread. This way the local and remote counters can be still correct, even when background daemons like khugepaged are changing memory mappings. This only affects the accounting, but I think it's worth doing that right to avoid confusing users. I first tried to just pass down the right node, but this required a lot of changes to pass down this parameter and at least one addition of a 10th argument to a 9 argument function. Using the flag is a lot less intrusive. Open: should be also used for migration? [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Andi Kleen Cc: Andrea Arcangeli Reviewed-by: KAMEZAWA Hiroyuki Cc: Johannes Weiner Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/gfp.h | 2 ++ include/linux/vmstat.h | 4 ++-- 2 files changed, 4 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/gfp.h b/include/linux/gfp.h index dca31761b311..bfb8f934521e 100644 --- a/include/linux/gfp.h +++ b/include/linux/gfp.h @@ -35,6 +35,7 @@ struct vm_area_struct; #define ___GFP_NOTRACK 0 #endif #define ___GFP_NO_KSWAPD 0x400000u +#define ___GFP_OTHER_NODE 0x800000u /* * GFP bitmasks.. @@ -83,6 +84,7 @@ struct vm_area_struct; #define __GFP_NOTRACK ((__force gfp_t)___GFP_NOTRACK) /* Don't track with kmemcheck */ #define __GFP_NO_KSWAPD ((__force gfp_t)___GFP_NO_KSWAPD) +#define __GFP_OTHER_NODE ((__force gfp_t)___GFP_OTHER_NODE) /* On behalf of other node */ /* * This may seem redundant, but it's a way of annotating false positives vs. diff --git a/include/linux/vmstat.h b/include/linux/vmstat.h index 833e676d6d92..461c0119664f 100644 --- a/include/linux/vmstat.h +++ b/include/linux/vmstat.h @@ -220,12 +220,12 @@ static inline unsigned long node_page_state(int node, zone_page_state(&zones[ZONE_MOVABLE], item); } -extern void zone_statistics(struct zone *, struct zone *); +extern void zone_statistics(struct zone *, struct zone *, gfp_t gfp); #else #define node_page_state(node, item) global_page_state(item) -#define zone_statistics(_zl,_z) do { } while (0) +#define zone_statistics(_zl, _z, gfp) do { } while (0) #endif /* CONFIG_NUMA */ -- cgit v1.2.3 From 3e50594e8e72932ad4cfcb0b3cbdf58fc3bce416 Mon Sep 17 00:00:00 2001 From: FUJITA Tomonori Date: Tue, 22 Mar 2011 16:33:50 -0700 Subject: add the common dma_addr_t typedef to include/linux/types.h All architectures can use the common dma_addr_t typedef now. We can remove the arch specific dma_addr_t. Signed-off-by: FUJITA Tomonori Acked-by: Arnd Bergmann Cc: Ingo Molnar Cc: Thomas Gleixner Cc: "H. Peter Anvin" Cc: Ivan Kokshaysky Cc: Richard Henderson Cc: Matt Turner Cc: "Luck, Tony" Cc: Ralf Baechle Cc: Benjamin Herrenschmidt Cc: Heiko Carstens Cc: Martin Schwidefsky Cc: Chris Metcalf Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/types.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/types.h b/include/linux/types.h index c2a9eb44f2fa..176da8c1fbb1 100644 --- a/include/linux/types.h +++ b/include/linux/types.h @@ -150,6 +150,12 @@ typedef unsigned long blkcnt_t; #define pgoff_t unsigned long #endif +#ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT +typedef u64 dma_addr_t; +#else +typedef u32 dma_addr_t; +#endif /* dma_addr_t */ + #endif /* __KERNEL__ */ /* -- cgit v1.2.3 From c837fb37a60aa642b9ad423462e32b851a03020a Mon Sep 17 00:00:00 2001 From: Borislav Petkov Date: Tue, 22 Mar 2011 16:33:55 -0700 Subject: include/linux/compiler-gcc*.h: unify macro definitions Unify identical gcc3.x and gcc4.x macros. Signed-off-by: Borislav Petkov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/compiler-gcc.h | 8 ++++++++ include/linux/compiler-gcc3.h | 8 -------- include/linux/compiler-gcc4.h | 8 -------- 3 files changed, 8 insertions(+), 16 deletions(-) (limited to 'include/linux') diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h index 16508bcddacc..cb4c1eb7778e 100644 --- a/include/linux/compiler-gcc.h +++ b/include/linux/compiler-gcc.h @@ -92,3 +92,11 @@ #if !defined(__noclone) #define __noclone /* not needed */ #endif + +/* + * A trick to suppress uninitialized variable warning without generating any + * code + */ +#define uninitialized_var(x) x = x + +#define __always_inline inline __attribute__((always_inline)) diff --git a/include/linux/compiler-gcc3.h b/include/linux/compiler-gcc3.h index b721129e0469..37d412436d0f 100644 --- a/include/linux/compiler-gcc3.h +++ b/include/linux/compiler-gcc3.h @@ -21,11 +21,3 @@ # error "GCOV profiling support for gcc versions below 3.4 not included" # endif /* __GNUC_MINOR__ */ #endif /* CONFIG_GCOV_KERNEL */ - -/* - * A trick to suppress uninitialized variable warning without generating any - * code - */ -#define uninitialized_var(x) x = x - -#define __always_inline inline __attribute__((always_inline)) diff --git a/include/linux/compiler-gcc4.h b/include/linux/compiler-gcc4.h index fcfa5b9a4317..64b7c003fd7a 100644 --- a/include/linux/compiler-gcc4.h +++ b/include/linux/compiler-gcc4.h @@ -12,13 +12,6 @@ #define __used __attribute__((__used__)) #define __must_check __attribute__((warn_unused_result)) #define __compiler_offsetof(a,b) __builtin_offsetof(a,b) -#define __always_inline inline __attribute__((always_inline)) - -/* - * A trick to suppress uninitialized variable warning without generating any - * code - */ -#define uninitialized_var(x) x = x #if __GNUC_MINOR__ >= 3 /* Mark functions as cold. gcc will assume any path leading to a call @@ -53,7 +46,6 @@ #define __noclone __attribute__((__noclone__)) #endif - #endif #if __GNUC_MINOR__ > 0 -- cgit v1.2.3 From f3ccfcdaf3986f8c541886606e950de52cab7ad3 Mon Sep 17 00:00:00 2001 From: Richard Kennedy Date: Tue, 22 Mar 2011 16:33:56 -0700 Subject: fs.h: remove 8 bytes of padding from block_device on 64bit builds Re-ordering struct block_inode to remove 8 bytes of padding on 64 bit builds, which also shrinks bdev_inode by 8 bytes (776 -> 768) allowing it to fit into one fewer cache lines. Signed-off-by: Richard Kennedy Cc: Al Viro Cc: Jens Axboe Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/fs.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index 7061a8587ee3..12529e966350 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -662,9 +662,9 @@ struct address_space { struct block_device { dev_t bd_dev; /* not a kdev_t - it's a search key */ + int bd_openers; struct inode * bd_inode; /* will die */ struct super_block * bd_super; - int bd_openers; struct mutex bd_mutex; /* open/close mutex */ struct list_head bd_inodes; void * bd_claiming; -- cgit v1.2.3 From fa9ee9c4b9885dfdf8eccac19b8b4fc8a7c53288 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Tue, 22 Mar 2011 16:34:05 -0700 Subject: include/linux/err.h: add a function to cast error-pointers to a return value MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit PTR_RET() can be used if you have an error-pointer and are only interested in the eventual error value, but not the pointer. Yields the usual 0 for no error, -ESOMETHING otherwise. Signed-off-by: Uwe Kleine-König Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/err.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/linux') diff --git a/include/linux/err.h b/include/linux/err.h index 448afc12c78a..f2edce25a76b 100644 --- a/include/linux/err.h +++ b/include/linux/err.h @@ -52,6 +52,14 @@ static inline void * __must_check ERR_CAST(const void *ptr) return (void *) ptr; } +static inline int __must_check PTR_RET(const void *ptr) +{ + if (IS_ERR(ptr)) + return PTR_ERR(ptr); + else + return 0; +} + #endif #endif /* _LINUX_ERR_H */ -- cgit v1.2.3 From 34db18a054c600b6f81787165669dc572fe4de25 Mon Sep 17 00:00:00 2001 From: Amerigo Wang Date: Tue, 22 Mar 2011 16:34:06 -0700 Subject: smp: move smp setup functions to kernel/smp.c Move setup_nr_cpu_ids(), smp_init() and some other SMP boot parameter setup functions from init/main.c to kenrel/smp.c, saves some #ifdef CONFIG_SMP. Signed-off-by: WANG Cong Cc: Rakib Mullick Cc: David Howells Cc: Ingo Molnar Cc: Peter Zijlstra Cc: Tejun Heo Cc: Arnd Bergmann Cc: Akinobu Mita Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/smp.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/smp.h b/include/linux/smp.h index 6dc95cac6b3d..48159dd320d0 100644 --- a/include/linux/smp.h +++ b/include/linux/smp.h @@ -114,6 +114,8 @@ int on_each_cpu(smp_call_func_t func, void *info, int wait); void smp_prepare_boot_cpu(void); extern unsigned int setup_max_cpus; +extern void __init setup_nr_cpu_ids(void); +extern void __init smp_init(void); #else /* !SMP */ -- cgit v1.2.3 From 33ee3b2e2eb9b4b6c64dcf9ed66e2ac3124e748c Mon Sep 17 00:00:00 2001 From: Alexey Dobriyan Date: Tue, 22 Mar 2011 16:34:40 -0700 Subject: kstrto*: converting strings to integers done (hopefully) right 1. simple_strto*() do not contain overflow checks and crufty, libc way to indicate failure. 2. strict_strto*() also do not have overflow checks but the name and comments pretend they do. 3. Both families have only "long long" and "long" variants, but users want strtou8() 4. Both "simple" and "strict" prefixes are wrong: Simple doesn't exactly say what's so simple, strict should not exist because conversion should be strict by default. The solution is to use "k" prefix and add convertors for more types. Enter kstrtoull() kstrtoll() kstrtoul() kstrtol() kstrtouint() kstrtoint() kstrtou64() kstrtos64() kstrtou32() kstrtos32() kstrtou16() kstrtos16() kstrtou8() kstrtos8() Include runtime testsuite (somewhat incomplete) as well. strict_strto*() become deprecated, stubbed to kstrto*() and eventually will be removed altogether. Use kstrto*() in code today! Note: on some archs _kstrtoul() and _kstrtol() are left in tree, even if they'll be unused at runtime. This is temporarily solution, because I don't want to hardcode list of archs where these functions aren't needed. Current solution with sizeof() and __alignof__ at least always works. Signed-off-by: Alexey Dobriyan Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/kernel.h | 70 +++++++++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 66 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/kernel.h b/include/linux/kernel.h index 2fe6e84894a4..00cec4dc0ae2 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -187,14 +187,76 @@ NORET_TYPE void do_exit(long error_code) ATTRIB_NORET; NORET_TYPE void complete_and_exit(struct completion *, long) ATTRIB_NORET; + +/* Internal, do not use. */ +int __must_check _kstrtoul(const char *s, unsigned int base, unsigned long *res); +int __must_check _kstrtol(const char *s, unsigned int base, long *res); + +int __must_check kstrtoull(const char *s, unsigned int base, unsigned long long *res); +int __must_check kstrtoll(const char *s, unsigned int base, long long *res); +static inline int __must_check kstrtoul(const char *s, unsigned int base, unsigned long *res) +{ + /* + * We want to shortcut function call, but + * __builtin_types_compatible_p(unsigned long, unsigned long long) = 0. + */ + if (sizeof(unsigned long) == sizeof(unsigned long long) && + __alignof__(unsigned long) == __alignof__(unsigned long long)) + return kstrtoull(s, base, (unsigned long long *)res); + else + return _kstrtoul(s, base, res); +} + +static inline int __must_check kstrtol(const char *s, unsigned int base, long *res) +{ + /* + * We want to shortcut function call, but + * __builtin_types_compatible_p(long, long long) = 0. + */ + if (sizeof(long) == sizeof(long long) && + __alignof__(long) == __alignof__(long long)) + return kstrtoll(s, base, (long long *)res); + else + return _kstrtol(s, base, res); +} + +int __must_check kstrtouint(const char *s, unsigned int base, unsigned int *res); +int __must_check kstrtoint(const char *s, unsigned int base, int *res); + +static inline int __must_check kstrtou64(const char *s, unsigned int base, u64 *res) +{ + return kstrtoull(s, base, res); +} + +static inline int __must_check kstrtos64(const char *s, unsigned int base, s64 *res) +{ + return kstrtoll(s, base, res); +} + +static inline int __must_check kstrtou32(const char *s, unsigned int base, u32 *res) +{ + return kstrtouint(s, base, res); +} + +static inline int __must_check kstrtos32(const char *s, unsigned int base, s32 *res) +{ + return kstrtoint(s, base, res); +} + +int __must_check kstrtou16(const char *s, unsigned int base, u16 *res); +int __must_check kstrtos16(const char *s, unsigned int base, s16 *res); +int __must_check kstrtou8(const char *s, unsigned int base, u8 *res); +int __must_check kstrtos8(const char *s, unsigned int base, s8 *res); + extern unsigned long simple_strtoul(const char *,char **,unsigned int); extern long simple_strtol(const char *,char **,unsigned int); extern unsigned long long simple_strtoull(const char *,char **,unsigned int); extern long long simple_strtoll(const char *,char **,unsigned int); -extern int __must_check strict_strtoul(const char *, unsigned int, unsigned long *); -extern int __must_check strict_strtol(const char *, unsigned int, long *); -extern int __must_check strict_strtoull(const char *, unsigned int, unsigned long long *); -extern int __must_check strict_strtoll(const char *, unsigned int, long long *); +#define strict_strtoul kstrtoul +#define strict_strtol kstrtol +#define strict_strtoull kstrtoull +#define strict_strtoll kstrtoll + extern int sprintf(char * buf, const char * fmt, ...) __attribute__ ((format (printf, 2, 3))); extern int vsprintf(char *buf, const char *, va_list) -- cgit v1.2.3 From e359dc24d32e58c795fc339cb3e89ea6330fceae Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Tue, 22 Mar 2011 16:34:40 -0700 Subject: sigma-firmware: loader for Analog Devices' SigmaStudio Analog Devices' SigmaStudio can produce firmware blobs for devices with these DSPs embedded (like some audio codecs). Allow these device drivers to easily parse and load them. Signed-off-by: Mike Frysinger Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/sigma.h | 60 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 60 insertions(+) create mode 100644 include/linux/sigma.h (limited to 'include/linux') diff --git a/include/linux/sigma.h b/include/linux/sigma.h new file mode 100644 index 000000000000..e2accb3164d8 --- /dev/null +++ b/include/linux/sigma.h @@ -0,0 +1,60 @@ +/* + * Load firmware files from Analog Devices SigmaStudio + * + * Copyright 2009-2011 Analog Devices Inc. + * + * Licensed under the GPL-2 or later. + */ + +#ifndef __SIGMA_FIRMWARE_H__ +#define __SIGMA_FIRMWARE_H__ + +#include +#include + +struct i2c_client; + +#define SIGMA_MAGIC "ADISIGM" + +struct sigma_firmware { + const struct firmware *fw; + size_t pos; +}; + +struct sigma_firmware_header { + unsigned char magic[7]; + u8 version; + u32 crc; +}; + +enum { + SIGMA_ACTION_WRITEXBYTES = 0, + SIGMA_ACTION_WRITESINGLE, + SIGMA_ACTION_WRITESAFELOAD, + SIGMA_ACTION_DELAY, + SIGMA_ACTION_PLLWAIT, + SIGMA_ACTION_NOOP, + SIGMA_ACTION_END, +}; + +struct sigma_action { + u8 instr; + u8 len_hi; + u16 len; + u16 addr; + unsigned char payload[]; +}; + +static inline u32 sigma_action_len(struct sigma_action *sa) +{ + return (sa->len_hi << 16) | sa->len; +} + +static inline size_t sigma_action_size(struct sigma_action *sa, u32 payload_len) +{ + return sizeof(*sa) + payload_len + (payload_len % 2); +} + +extern int process_sigma_firmware(struct i2c_client *client, const char *name); + +#endif -- cgit v1.2.3 From d03e1617f089c0bcbc22b9d4739e04a0b43b14fa Mon Sep 17 00:00:00 2001 From: Konstantin Khlebnikov Date: Tue, 22 Mar 2011 16:34:45 -0700 Subject: crc32: add missed brackets in macro Add brackets around typecasted argument in crc32() macro. Signed-off-by: Konstantin Khlebnikov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/crc32.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/crc32.h b/include/linux/crc32.h index e20dd1f9b40a..391a259b2cc9 100644 --- a/include/linux/crc32.h +++ b/include/linux/crc32.h @@ -11,7 +11,7 @@ extern u32 crc32_le(u32 crc, unsigned char const *p, size_t len); extern u32 crc32_be(u32 crc, unsigned char const *p, size_t len); -#define crc32(seed, data, length) crc32_le(seed, (unsigned char const *)data, length) +#define crc32(seed, data, length) crc32_le(seed, (unsigned char const *)(data), length) /* * Helpers for hash table generation of ethernet nics: -- cgit v1.2.3 From 565d76cb7d5fd7cb010fd690602280a69ab116ef Mon Sep 17 00:00:00 2001 From: Jim Keniston Date: Tue, 22 Mar 2011 16:35:12 -0700 Subject: zlib: slim down zlib_deflate() workspace when possible Instead of always creating a huge (268K) deflate_workspace with the maximum compression parameters (windowBits=15, memLevel=8), allow the caller to obtain a smaller workspace by specifying smaller parameter values. For example, when capturing oops and panic reports to a medium with limited capacity, such as NVRAM, compression may be the only way to capture the whole report. In this case, a small workspace (24K works fine) is a win, whether you allocate the workspace when you need it (i.e., during an oops or panic) or at boot time. I've verified that this patch works with all accepted values of windowBits (positive and negative), memLevel, and compression level. Signed-off-by: Jim Keniston Cc: Herbert Xu Cc: David Miller Cc: Chris Mason Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/zlib.h | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/zlib.h b/include/linux/zlib.h index 40c49cb3eb51..9c5a6b4de0a3 100644 --- a/include/linux/zlib.h +++ b/include/linux/zlib.h @@ -179,11 +179,16 @@ typedef z_stream *z_streamp; /* basic functions */ -extern int zlib_deflate_workspacesize (void); +extern int zlib_deflate_workspacesize (int windowBits, int memLevel); /* Returns the number of bytes that needs to be allocated for a per- - stream workspace. A pointer to this number of bytes should be - returned in stream->workspace before calling zlib_deflateInit(). + stream workspace with the specified parameters. A pointer to this + number of bytes should be returned in stream->workspace before + you call zlib_deflateInit() or zlib_deflateInit2(). If you call + zlib_deflateInit(), specify windowBits = MAX_WBITS and memLevel = + MAX_MEM_LEVEL here. If you call zlib_deflateInit2(), the windowBits + and memLevel parameters passed to zlib_deflateInit2() must not + exceed those passed here. */ /* -- cgit v1.2.3 From 6a1fef6d000944911df0f160f366111daa10740a Mon Sep 17 00:00:00 2001 From: Sriram Date: Tue, 22 Mar 2011 02:31:03 +0000 Subject: net: davinci_emac:Fix translation logic for buffer descriptor With recent changes to the driver(switch to new cpdma layer), the support for buffer descriptor address translation logic is broken. This affects platforms where the physical address of the descriptors as seen by the DMA engine is different from the physical address. Original Patch adding translation logic support: Commit: ad021ae8862209864dc8ebd3b7d3a55ce84b9ea2 Signed-off-by: Sriramakrishnan A G Tested-By: Sekhar Nori Signed-off-by: David S. Miller --- include/linux/davinci_emac.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/davinci_emac.h b/include/linux/davinci_emac.h index 5dd428532f79..542888504994 100644 --- a/include/linux/davinci_emac.h +++ b/include/linux/davinci_emac.h @@ -36,6 +36,7 @@ struct emac_platform_data { u8 rmii_en; u8 version; + bool no_bd_ram; void (*interrupt_enable) (void); void (*interrupt_disable) (void); }; -- cgit v1.2.3 From b103e0b3c52e6edb4839ccc961cf335ca6b88918 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Fri, 21 Jan 2011 13:26:46 +0000 Subject: mfd: Support configuration of WM831x /IRQ output in CMOS mode Provide platform data allowing the system to set the /IRQ pin into CMOS mode rather than the default open drain. The default value of this platform data reflects the default hardware configuration so there should be no change to existing users. Signed-off-by: Mark Brown Signed-off-by: Samuel Ortiz --- include/linux/mfd/wm831x/pdata.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/wm831x/pdata.h b/include/linux/mfd/wm831x/pdata.h index 173086d42af4..ac3aa73943e7 100644 --- a/include/linux/mfd/wm831x/pdata.h +++ b/include/linux/mfd/wm831x/pdata.h @@ -109,6 +109,9 @@ struct wm831x_pdata { /** Called after subdevices are set up */ int (*post_init)(struct wm831x *wm831x); + /** Put the /IRQ line into CMOS mode */ + bool irq_cmos; + int irq_base; int gpio_base; struct wm831x_backlight_pdata *backlight; -- cgit v1.2.3 From 90550d1903da8dac851d220b794e44c90a11c6ce Mon Sep 17 00:00:00 2001 From: Mattias Nilsson Date: Mon, 14 Feb 2011 11:17:12 +0100 Subject: mfd: AB8500 system control driver This adds a pretty straight-forward system control driver for the AB8500. This driver will be used from the core platform, e.g the clock tree implementation in the machine code, and is by nature singleton. There are a few simple functions to read, write, set and clear registers so that the machine code can control its own foundation. Cc: Mattias Wallin Signed-off-by: Mattias Nilsson Signed-off-by: Linus Walleij Signed-off-by: Samuel Ortiz --- include/linux/mfd/ab8500/sysctrl.h | 254 +++++++++++++++++++++++++++++++++++++ 1 file changed, 254 insertions(+) create mode 100644 include/linux/mfd/ab8500/sysctrl.h (limited to 'include/linux') diff --git a/include/linux/mfd/ab8500/sysctrl.h b/include/linux/mfd/ab8500/sysctrl.h new file mode 100644 index 000000000000..10da0291f8f8 --- /dev/null +++ b/include/linux/mfd/ab8500/sysctrl.h @@ -0,0 +1,254 @@ +/* + * Copyright (C) ST-Ericsson SA 2010 + * Author: Mattias Nilsson for ST Ericsson. + * License terms: GNU General Public License (GPL) version 2 + */ +#ifndef __AB8500_SYSCTRL_H +#define __AB8500_SYSCTRL_H + +#include + +#ifdef CONFIG_AB8500_CORE + +int ab8500_sysctrl_read(u16 reg, u8 *value); +int ab8500_sysctrl_write(u16 reg, u8 mask, u8 value); + +#else + +static inline int ab8500_sysctrl_read(u16 reg, u8 *value) +{ + return 0; +} + +static inline int ab8500_sysctrl_write(u16 reg, u8 mask, u8 value) +{ + return 0; +} + +#endif /* CONFIG_AB8500_CORE */ + +static inline int ab8500_sysctrl_set(u16 reg, u8 bits) +{ + return ab8500_sysctrl_write(reg, bits, bits); +} + +static inline int ab8500_sysctrl_clear(u16 reg, u8 bits) +{ + return ab8500_sysctrl_write(reg, bits, 0); +} + +/* Registers */ +#define AB8500_TURNONSTATUS 0x100 +#define AB8500_RESETSTATUS 0x101 +#define AB8500_PONKEY1PRESSSTATUS 0x102 +#define AB8500_SYSCLKREQSTATUS 0x142 +#define AB8500_STW4500CTRL1 0x180 +#define AB8500_STW4500CTRL2 0x181 +#define AB8500_STW4500CTRL3 0x200 +#define AB8500_MAINWDOGCTRL 0x201 +#define AB8500_MAINWDOGTIMER 0x202 +#define AB8500_LOWBAT 0x203 +#define AB8500_BATTOK 0x204 +#define AB8500_SYSCLKTIMER 0x205 +#define AB8500_SMPSCLKCTRL 0x206 +#define AB8500_SMPSCLKSEL1 0x207 +#define AB8500_SMPSCLKSEL2 0x208 +#define AB8500_SMPSCLKSEL3 0x209 +#define AB8500_SYSULPCLKCONF 0x20A +#define AB8500_SYSULPCLKCTRL1 0x20B +#define AB8500_SYSCLKCTRL 0x20C +#define AB8500_SYSCLKREQ1VALID 0x20D +#define AB8500_SYSTEMCTRLSUP 0x20F +#define AB8500_SYSCLKREQ1RFCLKBUF 0x210 +#define AB8500_SYSCLKREQ2RFCLKBUF 0x211 +#define AB8500_SYSCLKREQ3RFCLKBUF 0x212 +#define AB8500_SYSCLKREQ4RFCLKBUF 0x213 +#define AB8500_SYSCLKREQ5RFCLKBUF 0x214 +#define AB8500_SYSCLKREQ6RFCLKBUF 0x215 +#define AB8500_SYSCLKREQ7RFCLKBUF 0x216 +#define AB8500_SYSCLKREQ8RFCLKBUF 0x217 +#define AB8500_DITHERCLKCTRL 0x220 +#define AB8500_SWATCTRL 0x230 +#define AB8500_HIQCLKCTRL 0x232 +#define AB8500_VSIMSYSCLKCTRL 0x233 + +/* Bits */ +#define AB8500_TURNONSTATUS_PORNVBAT BIT(0) +#define AB8500_TURNONSTATUS_PONKEY1DBF BIT(1) +#define AB8500_TURNONSTATUS_PONKEY2DBF BIT(2) +#define AB8500_TURNONSTATUS_RTCALARM BIT(3) +#define AB8500_TURNONSTATUS_MAINCHDET BIT(4) +#define AB8500_TURNONSTATUS_VBUSDET BIT(5) +#define AB8500_TURNONSTATUS_USBIDDETECT BIT(6) + +#define AB8500_RESETSTATUS_RESETN4500NSTATUS BIT(0) +#define AB8500_RESETSTATUS_SWRESETN4500NSTATUS BIT(2) + +#define AB8500_PONKEY1PRESSSTATUS_PONKEY1PRESSTIME_MASK 0x7F +#define AB8500_PONKEY1PRESSSTATUS_PONKEY1PRESSTIME_SHIFT 0 + +#define AB8500_SYSCLKREQSTATUS_SYSCLKREQ1STATUS BIT(0) +#define AB8500_SYSCLKREQSTATUS_SYSCLKREQ2STATUS BIT(1) +#define AB8500_SYSCLKREQSTATUS_SYSCLKREQ3STATUS BIT(2) +#define AB8500_SYSCLKREQSTATUS_SYSCLKREQ4STATUS BIT(3) +#define AB8500_SYSCLKREQSTATUS_SYSCLKREQ5STATUS BIT(4) +#define AB8500_SYSCLKREQSTATUS_SYSCLKREQ6STATUS BIT(5) +#define AB8500_SYSCLKREQSTATUS_SYSCLKREQ7STATUS BIT(6) +#define AB8500_SYSCLKREQSTATUS_SYSCLKREQ8STATUS BIT(7) + +#define AB8500_STW4500CTRL1_SWOFF BIT(0) +#define AB8500_STW4500CTRL1_SWRESET4500N BIT(1) +#define AB8500_STW4500CTRL1_THDB8500SWOFF BIT(2) + +#define AB8500_STW4500CTRL2_RESETNVAUX1VALID BIT(0) +#define AB8500_STW4500CTRL2_RESETNVAUX2VALID BIT(1) +#define AB8500_STW4500CTRL2_RESETNVAUX3VALID BIT(2) +#define AB8500_STW4500CTRL2_RESETNVMODVALID BIT(3) +#define AB8500_STW4500CTRL2_RESETNVEXTSUPPLY1VALID BIT(4) +#define AB8500_STW4500CTRL2_RESETNVEXTSUPPLY2VALID BIT(5) +#define AB8500_STW4500CTRL2_RESETNVEXTSUPPLY3VALID BIT(6) +#define AB8500_STW4500CTRL2_RESETNVSMPS1VALID BIT(7) + +#define AB8500_STW4500CTRL3_CLK32KOUT2DIS BIT(0) +#define AB8500_STW4500CTRL3_RESETAUDN BIT(1) +#define AB8500_STW4500CTRL3_RESETDENCN BIT(2) +#define AB8500_STW4500CTRL3_THSDENA BIT(3) + +#define AB8500_MAINWDOGCTRL_MAINWDOGENA BIT(0) +#define AB8500_MAINWDOGCTRL_MAINWDOGKICK BIT(1) +#define AB8500_MAINWDOGCTRL_WDEXPTURNONVALID BIT(4) + +#define AB8500_MAINWDOGTIMER_MAINWDOGTIMER_MASK 0x7F +#define AB8500_MAINWDOGTIMER_MAINWDOGTIMER_SHIFT 0 + +#define AB8500_LOWBAT_LOWBATENA BIT(0) +#define AB8500_LOWBAT_LOWBAT_MASK 0x7E +#define AB8500_LOWBAT_LOWBAT_SHIFT 1 + +#define AB8500_BATTOK_BATTOKSEL0THF_MASK 0x0F +#define AB8500_BATTOK_BATTOKSEL0THF_SHIFT 0 +#define AB8500_BATTOK_BATTOKSEL1THF_MASK 0xF0 +#define AB8500_BATTOK_BATTOKSEL1THF_SHIFT 4 + +#define AB8500_SYSCLKTIMER_SYSCLKTIMER_MASK 0x0F +#define AB8500_SYSCLKTIMER_SYSCLKTIMER_SHIFT 0 +#define AB8500_SYSCLKTIMER_SYSCLKTIMERADJ_MASK 0xF0 +#define AB8500_SYSCLKTIMER_SYSCLKTIMERADJ_SHIFT 4 + +#define AB8500_SMPSCLKCTRL_SMPSCLKINTSEL_MASK 0x03 +#define AB8500_SMPSCLKCTRL_SMPSCLKINTSEL_SHIFT 0 +#define AB8500_SMPSCLKCTRL_3M2CLKINTENA BIT(2) + +#define AB8500_SMPSCLKSEL1_VARMCLKSEL_MASK 0x07 +#define AB8500_SMPSCLKSEL1_VARMCLKSEL_SHIFT 0 +#define AB8500_SMPSCLKSEL1_VAPECLKSEL_MASK 0x38 +#define AB8500_SMPSCLKSEL1_VAPECLKSEL_SHIFT 3 + +#define AB8500_SMPSCLKSEL2_VMODCLKSEL_MASK 0x07 +#define AB8500_SMPSCLKSEL2_VMODCLKSEL_SHIFT 0 +#define AB8500_SMPSCLKSEL2_VSMPS1CLKSEL_MASK 0x38 +#define AB8500_SMPSCLKSEL2_VSMPS1CLKSEL_SHIFT 3 + +#define AB8500_SMPSCLKSEL3_VSMPS2CLKSEL_MASK 0x07 +#define AB8500_SMPSCLKSEL3_VSMPS2CLKSEL_SHIFT 0 +#define AB8500_SMPSCLKSEL3_VSMPS3CLKSEL_MASK 0x38 +#define AB8500_SMPSCLKSEL3_VSMPS3CLKSEL_SHIFT 3 + +#define AB8500_SYSULPCLKCONF_ULPCLKCONF_MASK 0x03 +#define AB8500_SYSULPCLKCONF_ULPCLKCONF_SHIFT 0 +#define AB8500_SYSULPCLKCONF_CLK27MHZSTRE BIT(2) +#define AB8500_SYSULPCLKCONF_TVOUTCLKDELN BIT(3) +#define AB8500_SYSULPCLKCONF_TVOUTCLKINV BIT(4) +#define AB8500_SYSULPCLKCONF_ULPCLKSTRE BIT(5) +#define AB8500_SYSULPCLKCONF_CLK27MHZBUFENA BIT(6) +#define AB8500_SYSULPCLKCONF_CLK27MHZPDENA BIT(7) + +#define AB8500_SYSULPCLKCTRL1_SYSULPCLKINTSEL_MASK 0x03 +#define AB8500_SYSULPCLKCTRL1_SYSULPCLKINTSEL_SHIFT 0 +#define AB8500_SYSULPCLKCTRL1_ULPCLKREQ BIT(2) +#define AB8500_SYSULPCLKCTRL1_4500SYSCLKREQ BIT(3) +#define AB8500_SYSULPCLKCTRL1_AUDIOCLKENA BIT(4) +#define AB8500_SYSULPCLKCTRL1_SYSCLKBUF2REQ BIT(5) +#define AB8500_SYSULPCLKCTRL1_SYSCLKBUF3REQ BIT(6) +#define AB8500_SYSULPCLKCTRL1_SYSCLKBUF4REQ BIT(7) + +#define AB8500_SYSCLKCTRL_TVOUTPLLENA BIT(0) +#define AB8500_SYSCLKCTRL_TVOUTCLKENA BIT(1) +#define AB8500_SYSCLKCTRL_USBCLKENA BIT(2) + +#define AB8500_SYSCLKREQ1VALID_SYSCLKREQ1VALID BIT(0) +#define AB8500_SYSCLKREQ1VALID_ULPCLKREQ1VALID BIT(1) +#define AB8500_SYSCLKREQ1VALID_USBSYSCLKREQ1VALID BIT(2) + +#define AB8500_SYSTEMCTRLSUP_EXTSUP12LPNCLKSEL_MASK 0x03 +#define AB8500_SYSTEMCTRLSUP_EXTSUP12LPNCLKSEL_SHIFT 0 +#define AB8500_SYSTEMCTRLSUP_EXTSUP3LPNCLKSEL_MASK 0x0C +#define AB8500_SYSTEMCTRLSUP_EXTSUP3LPNCLKSEL_SHIFT 2 +#define AB8500_SYSTEMCTRLSUP_INTDB8500NOD BIT(4) + +#define AB8500_SYSCLKREQ1RFCLKBUF_SYSCLKREQ1RFCLKBUF2 BIT(2) +#define AB8500_SYSCLKREQ1RFCLKBUF_SYSCLKREQ1RFCLKBUF3 BIT(3) +#define AB8500_SYSCLKREQ1RFCLKBUF_SYSCLKREQ1RFCLKBUF4 BIT(4) + +#define AB8500_SYSCLKREQ2RFCLKBUF_SYSCLKREQ2RFCLKBUF2 BIT(2) +#define AB8500_SYSCLKREQ2RFCLKBUF_SYSCLKREQ2RFCLKBUF3 BIT(3) +#define AB8500_SYSCLKREQ2RFCLKBUF_SYSCLKREQ2RFCLKBUF4 BIT(4) + +#define AB8500_SYSCLKREQ3RFCLKBUF_SYSCLKREQ3RFCLKBUF2 BIT(2) +#define AB8500_SYSCLKREQ3RFCLKBUF_SYSCLKREQ3RFCLKBUF3 BIT(3) +#define AB8500_SYSCLKREQ3RFCLKBUF_SYSCLKREQ3RFCLKBUF4 BIT(4) + +#define AB8500_SYSCLKREQ4RFCLKBUF_SYSCLKREQ4RFCLKBUF2 BIT(2) +#define AB8500_SYSCLKREQ4RFCLKBUF_SYSCLKREQ4RFCLKBUF3 BIT(3) +#define AB8500_SYSCLKREQ4RFCLKBUF_SYSCLKREQ4RFCLKBUF4 BIT(4) + +#define AB8500_SYSCLKREQ5RFCLKBUF_SYSCLKREQ5RFCLKBUF2 BIT(2) +#define AB8500_SYSCLKREQ5RFCLKBUF_SYSCLKREQ5RFCLKBUF3 BIT(3) +#define AB8500_SYSCLKREQ5RFCLKBUF_SYSCLKREQ5RFCLKBUF4 BIT(4) + +#define AB8500_SYSCLKREQ6RFCLKBUF_SYSCLKREQ6RFCLKBUF2 BIT(2) +#define AB8500_SYSCLKREQ6RFCLKBUF_SYSCLKREQ6RFCLKBUF3 BIT(3) +#define AB8500_SYSCLKREQ6RFCLKBUF_SYSCLKREQ6RFCLKBUF4 BIT(4) + +#define AB8500_SYSCLKREQ7RFCLKBUF_SYSCLKREQ7RFCLKBUF2 BIT(2) +#define AB8500_SYSCLKREQ7RFCLKBUF_SYSCLKREQ7RFCLKBUF3 BIT(3) +#define AB8500_SYSCLKREQ7RFCLKBUF_SYSCLKREQ7RFCLKBUF4 BIT(4) + +#define AB8500_SYSCLKREQ8RFCLKBUF_SYSCLKREQ8RFCLKBUF2 BIT(2) +#define AB8500_SYSCLKREQ8RFCLKBUF_SYSCLKREQ8RFCLKBUF3 BIT(3) +#define AB8500_SYSCLKREQ8RFCLKBUF_SYSCLKREQ8RFCLKBUF4 BIT(4) + +#define AB8500_DITHERCLKCTRL_VARMDITHERENA BIT(0) +#define AB8500_DITHERCLKCTRL_VSMPS3DITHERENA BIT(1) +#define AB8500_DITHERCLKCTRL_VSMPS1DITHERENA BIT(2) +#define AB8500_DITHERCLKCTRL_VSMPS2DITHERENA BIT(3) +#define AB8500_DITHERCLKCTRL_VMODDITHERENA BIT(4) +#define AB8500_DITHERCLKCTRL_VAPEDITHERENA BIT(5) +#define AB8500_DITHERCLKCTRL_DITHERDEL_MASK 0xC0 +#define AB8500_DITHERCLKCTRL_DITHERDEL_SHIFT 6 + +#define AB8500_SWATCTRL_UPDATERF BIT(0) +#define AB8500_SWATCTRL_SWATENABLE BIT(1) +#define AB8500_SWATCTRL_RFOFFTIMER_MASK 0x1C +#define AB8500_SWATCTRL_RFOFFTIMER_SHIFT 2 +#define AB8500_SWATCTRL_SWATBIT5 BIT(6) + +#define AB8500_HIQCLKCTRL_SYSCLKREQ1HIQENAVALID BIT(0) +#define AB8500_HIQCLKCTRL_SYSCLKREQ2HIQENAVALID BIT(1) +#define AB8500_HIQCLKCTRL_SYSCLKREQ3HIQENAVALID BIT(2) +#define AB8500_HIQCLKCTRL_SYSCLKREQ4HIQENAVALID BIT(3) +#define AB8500_HIQCLKCTRL_SYSCLKREQ5HIQENAVALID BIT(4) +#define AB8500_HIQCLKCTRL_SYSCLKREQ6HIQENAVALID BIT(5) +#define AB8500_HIQCLKCTRL_SYSCLKREQ7HIQENAVALID BIT(6) +#define AB8500_HIQCLKCTRL_SYSCLKREQ8HIQENAVALID BIT(7) + +#define AB8500_VSIMSYSCLKCTRL_VSIMSYSCLKREQ1VALID BIT(0) +#define AB8500_VSIMSYSCLKCTRL_VSIMSYSCLKREQ2VALID BIT(1) +#define AB8500_VSIMSYSCLKCTRL_VSIMSYSCLKREQ3VALID BIT(2) +#define AB8500_VSIMSYSCLKCTRL_VSIMSYSCLKREQ4VALID BIT(3) +#define AB8500_VSIMSYSCLKCTRL_VSIMSYSCLKREQ5VALID BIT(4) +#define AB8500_VSIMSYSCLKCTRL_VSIMSYSCLKREQ6VALID BIT(5) +#define AB8500_VSIMSYSCLKCTRL_VSIMSYSCLKREQ7VALID BIT(6) +#define AB8500_VSIMSYSCLKCTRL_VSIMSYSCLKREQ8VALID BIT(7) + +#endif /* __AB8500_SYSCTRL_H */ -- cgit v1.2.3 From dae2db30c114cd0dec59b4130c315c9cce351741 Mon Sep 17 00:00:00 2001 From: Arun Murthy Date: Tue, 22 Feb 2011 10:11:13 +0100 Subject: mfd: Add new ab8500 GPADC driver AB8500 GPADC driver used to convert Acc and battery/ac/usb voltage Signed-off-by: Arun Murthy Acked-by: Linus Walleij Acked-by: Mattias Wallin Signed-off-by: Samuel Ortiz --- include/linux/mfd/ab8500-gpadc.h | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 include/linux/mfd/ab8500-gpadc.h (limited to 'include/linux') diff --git a/include/linux/mfd/ab8500-gpadc.h b/include/linux/mfd/ab8500-gpadc.h new file mode 100644 index 000000000000..9f6cc26bc734 --- /dev/null +++ b/include/linux/mfd/ab8500-gpadc.h @@ -0,0 +1,28 @@ +/* + * Copyright (C) 2010 ST-Ericsson SA + * Licensed under GPLv2. + * + * Author: Arun R Murthy + */ + +#ifndef _AB8500_GPADC_H +#define _AB8500_GPADC_H + +/* GPADC source: From datasheet(ADCSwSel[4:0] in GPADCCtrl2) */ +#define BAT_CTRL 0x01 +#define BTEMP_BALL 0x02 +#define MAIN_CHARGER_V 0x03 +#define ACC_DETECT1 0x04 +#define ACC_DETECT2 0x05 +#define ADC_AUX1 0x06 +#define ADC_AUX2 0x07 +#define MAIN_BAT_V 0x08 +#define VBUS_V 0x09 +#define MAIN_CHARGER_C 0x0A +#define USB_CHARGER_C 0x0B +#define BK_BAT_V 0x0C +#define DIE_TEMP 0x0D + +int ab8500_gpadc_convert(u8 input); + +#endif /* _AB8500_GPADC_H */ -- cgit v1.2.3 From 8e6de4a30294809420ac9a974b4f28b38ebdb38f Mon Sep 17 00:00:00 2001 From: Balaji T K Date: Thu, 10 Feb 2011 18:44:50 +0530 Subject: regulator: twl: add clk32kg to twl-regulator In OMAP4 Blaze and Panda, 32KHz clock to WLAN is supplied from Phoenix TWL6030. The 32KHz clock state (ON/OFF) is configured in CLK32KG_CFG_[GRP, TRANS, STATE] register. This follows the same register programming model as other regulators in TWL6030. So add CLK32KG as pseudo regulator. Signed-off-by: Balaji T K Acked-by: Mark Brown Signed-off-by: Samuel Ortiz --- include/linux/i2c/twl.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/i2c/twl.h b/include/linux/i2c/twl.h index 58afd9d2c438..0c0d1ae79981 100644 --- a/include/linux/i2c/twl.h +++ b/include/linux/i2c/twl.h @@ -698,6 +698,7 @@ struct twl4030_platform_data { struct regulator_init_data *vana; struct regulator_init_data *vcxio; struct regulator_init_data *vusb; + struct regulator_init_data *clk32kg; }; /*----------------------------------------------------------------------*/ @@ -777,5 +778,6 @@ static inline int twl4030charger_usb_en(int enable) { return 0; } /* INTERNAL LDOs */ #define TWL6030_REG_VRTC 47 +#define TWL6030_REG_CLK32KG 48 #endif /* End of __TWL4030_H */ -- cgit v1.2.3 From 2798e226ad7db82725ba03da933638e981b472f7 Mon Sep 17 00:00:00 2001 From: Andres Salomon Date: Thu, 17 Feb 2011 19:07:08 -0800 Subject: mfd-core: Fix up typos/vagueness in comment Signed-off-by: Andres Salomon Signed-off-by: Samuel Ortiz --- include/linux/mfd/core.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/core.h b/include/linux/mfd/core.h index 835996e167e1..1fd7c4467e5a 100644 --- a/include/linux/mfd/core.h +++ b/include/linux/mfd/core.h @@ -39,8 +39,8 @@ struct mfd_cell { size_t data_size; /* - * This resources can be specified relatively to the parent device. - * For accessing device you should use resources from device + * These resources can be specified relative to the parent device. + * For accessing hardware you should use resources from the platform dev */ int num_resources; const struct resource *resources; -- cgit v1.2.3 From fe891a008f3310be47786e87c158edebdb71e265 Mon Sep 17 00:00:00 2001 From: Andres Salomon Date: Thu, 17 Feb 2011 19:07:09 -0800 Subject: mfd-core: Unconditionally add mfd_cell to every platform_device Previously, one would set the mfd_cell's platform_data/data_size to point to the current mfd_cell in order to pass that information along to drivers. This causes the current mfd_cell to always be available to drivers. It also adds a wrapper function for fetching the mfd cell from a platform device, similar to what originally existed for mfd devices. Drivers who previously used platform_data for other purposes can still use it; the difference is that mfd_get_data() must be used to access it (and the pdata structure is no longer allocated in mfd_add_devices). Note that mfd_get_data is intentionally vague (in name) about where the data is stored; variable name changes can come later without having to touch brazillions of drivers. Signed-off-by: Andres Salomon Signed-off-by: Samuel Ortiz --- include/linux/mfd/core.h | 23 +++++++++++++++++++++-- 1 file changed, 21 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/core.h b/include/linux/mfd/core.h index 1fd7c4467e5a..aefc378f8dc9 100644 --- a/include/linux/mfd/core.h +++ b/include/linux/mfd/core.h @@ -33,9 +33,10 @@ struct mfd_cell { /* driver-specific data for MFD-aware "cell" drivers */ void *driver_data; - /* platform_data can be used to either pass data to "generic" - driver or as a hook to mfd_cell for the "cell" drivers */ + /* platform_data can be used to pass data to "generic" drivers */ void *platform_data; + + /* unused */ size_t data_size; /* @@ -55,6 +56,24 @@ struct mfd_cell { bool pm_runtime_no_callbacks; }; +/* + * Given a platform device that's been created by mfd_add_devices(), fetch + * the mfd_cell that created it. + */ +static inline const struct mfd_cell *mfd_get_cell(struct platform_device *pdev) +{ + return pdev->dev.platform_data; +} + +/* + * Given a platform device that's been created by mfd_add_devices(), fetch + * the .platform_data entry from the mfd_cell that created it. + */ +static inline void *mfd_get_data(struct platform_device *pdev) +{ + return mfd_get_cell(pdev)->platform_data; +} + extern int mfd_add_devices(struct device *parent, int id, const struct mfd_cell *cells, int n_devs, struct resource *mem_base, -- cgit v1.2.3 From 0ce5fabe59d7c4f51b5ad51ed178ba92531ec04d Mon Sep 17 00:00:00 2001 From: Andres Salomon Date: Thu, 17 Feb 2011 19:07:11 -0800 Subject: mfd: mfd_cell is now implicitly available to ab3550 driver No clients (in mainline kernel, I'm told that drivers exist in external trees that are planned for mainline inclusion) make use of this, nor do they make use of platform_data, so nothing really had to change here. The .data_size field is unused, so its usage gets removed. Signed-off-by: Andres Salomon Signed-off-by: Samuel Ortiz --- include/linux/mfd/abx500.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mfd/abx500.h b/include/linux/mfd/abx500.h index 67bd6f7ecf32..7d9b6ae1c203 100644 --- a/include/linux/mfd/abx500.h +++ b/include/linux/mfd/abx500.h @@ -186,7 +186,6 @@ struct abx500_init_settings { struct ab3550_platform_data { struct {unsigned int base; unsigned int count; } irq; void *dev_data[AB3550_NUM_DEVICES]; - size_t dev_data_sz[AB3550_NUM_DEVICES]; struct abx500_init_settings *init_settings; unsigned int init_settings_sz; }; -- cgit v1.2.3 From 4ec1b54c4d082d4bad19b55ca709da7e7138d542 Mon Sep 17 00:00:00 2001 From: Andres Salomon Date: Thu, 17 Feb 2011 19:07:23 -0800 Subject: mfd: mfd_cell is now implicitly available to mc13xxx drivers The cell's platform_data is now accessed with a helper function; change clients to use that, and remove the now-unused data_size. Note that mfd-core no longer makes a copy of platform_data, but the mc13xxx-core driver creates the pdata structures on the stack. In order to get around that, the various ARM mach types that set the pdata have been changed to hold the variable in static (global) memory. Also note that __initdata references in aforementioned pdata structs have been dropped. Signed-off-by: Andres Salomon Signed-off-by: Samuel Ortiz --- include/linux/mfd/mc13xxx.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/mc13xxx.h b/include/linux/mfd/mc13xxx.h index a1d391b40e68..c064beaaccb7 100644 --- a/include/linux/mfd/mc13xxx.h +++ b/include/linux/mfd/mc13xxx.h @@ -146,8 +146,7 @@ struct mc13xxx_platform_data { #define MC13XXX_USE_LED (1 << 5) unsigned int flags; - int num_regulators; - struct mc13xxx_regulator_init_data *regulators; + struct mc13xxx_regulator_platform_data regulators; struct mc13xxx_leds_platform_data *leds; }; -- cgit v1.2.3 From 40e03f571b2e63827f2afb90ea9aa459612c29e3 Mon Sep 17 00:00:00 2001 From: Andres Salomon Date: Thu, 17 Feb 2011 19:07:24 -0800 Subject: mfd: Drop data_size from mfd_cell struct Now that there are no more users of this, drop it. Signed-off-by: Andres Salomon Signed-off-by: Samuel Ortiz --- include/linux/mfd/core.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/core.h b/include/linux/mfd/core.h index aefc378f8dc9..923ec2591eb7 100644 --- a/include/linux/mfd/core.h +++ b/include/linux/mfd/core.h @@ -36,9 +36,6 @@ struct mfd_cell { /* platform_data can be used to pass data to "generic" drivers */ void *platform_data; - /* unused */ - size_t data_size; - /* * These resources can be specified relative to the parent device. * For accessing hardware you should use resources from the platform dev -- cgit v1.2.3 From 65e523595a31813c0f20ffd249792c60e253438e Mon Sep 17 00:00:00 2001 From: Andres Salomon Date: Thu, 17 Feb 2011 19:07:25 -0800 Subject: mfd: Rename platform_data field of mfd_cell to mfd_data Rename the platform_data variable to imply a distinction between common platform_data driver usage (typically accessed via pdev->dev.platform_data) and the way MFD passes data down to clients (using a wrapper named mfd_get_data). All clients have already been changed to use the wrapper function, so this can be a quick single-commit change that only touches things in drivers/mfd. Signed-off-by: Andres Salomon Acked-by: Linus Walleij Signed-off-by: Samuel Ortiz --- include/linux/mfd/core.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/core.h b/include/linux/mfd/core.h index 923ec2591eb7..f317fe4f8366 100644 --- a/include/linux/mfd/core.h +++ b/include/linux/mfd/core.h @@ -33,8 +33,8 @@ struct mfd_cell { /* driver-specific data for MFD-aware "cell" drivers */ void *driver_data; - /* platform_data can be used to pass data to "generic" drivers */ - void *platform_data; + /* mfd_data can be used to pass data to client drivers */ + void *mfd_data; /* * These resources can be specified relative to the parent device. @@ -64,11 +64,11 @@ static inline const struct mfd_cell *mfd_get_cell(struct platform_device *pdev) /* * Given a platform device that's been created by mfd_add_devices(), fetch - * the .platform_data entry from the mfd_cell that created it. + * the .mfd_data entry from the mfd_cell that created it. */ static inline void *mfd_get_data(struct platform_device *pdev) { - return mfd_get_cell(pdev)->platform_data; + return mfd_get_cell(pdev)->mfd_data; } extern int mfd_add_devices(struct device *parent, int id, -- cgit v1.2.3 From dcb50e83bb86d66d3554ba9c365488669c84d037 Mon Sep 17 00:00:00 2001 From: Andres Salomon Date: Thu, 17 Feb 2011 19:07:33 -0800 Subject: mfd: Remove driver_data field from mfd_cell All users of this have now been switched over to using mfd_data; it can go away now. Signed-off-by: Andres Salomon Signed-off-by: Samuel Ortiz --- include/linux/mfd/core.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/core.h b/include/linux/mfd/core.h index f317fe4f8366..71cd1f983cce 100644 --- a/include/linux/mfd/core.h +++ b/include/linux/mfd/core.h @@ -30,9 +30,6 @@ struct mfd_cell { int (*suspend)(struct platform_device *dev); int (*resume)(struct platform_device *dev); - /* driver-specific data for MFD-aware "cell" drivers */ - void *driver_data; - /* mfd_data can be used to pass data to client drivers */ void *mfd_data; -- cgit v1.2.3 From 1e29af62f2b285bd18685da93c3ce8c33ca2d1db Mon Sep 17 00:00:00 2001 From: Andres Salomon Date: Thu, 17 Feb 2011 19:07:34 -0800 Subject: mfd: Add refcounting support to mfd_cells This provides convenience functions for sharing of cells across multiple mfd clients. Mfd drivers can provide enable/disable hooks to actually tweak the hardware, and clients can call mfd_shared_cell_{en,dis}able without having to worry about whether or not another client happens to have enabled or disabled the cell/hardware. Note that this is purely optional; drivers can continue to use the mfd_cell's enable/disable hooks for their own purposes, if desired. Signed-off-by: Andres Salomon Signed-off-by: Samuel Ortiz --- include/linux/mfd/core.h | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mfd/core.h b/include/linux/mfd/core.h index 71cd1f983cce..22a2f5ebd9db 100644 --- a/include/linux/mfd/core.h +++ b/include/linux/mfd/core.h @@ -25,8 +25,11 @@ struct mfd_cell { const char *name; int id; + /* refcounting for multiple drivers to use a single cell */ + atomic_t *usage_count; int (*enable)(struct platform_device *dev); int (*disable)(struct platform_device *dev); + int (*suspend)(struct platform_device *dev); int (*resume)(struct platform_device *dev); @@ -50,6 +53,15 @@ struct mfd_cell { bool pm_runtime_no_callbacks; }; +/* + * Convenience functions for clients using shared cells. Refcounting + * happens automatically, with the cell's enable/disable callbacks + * being called only when a device is first being enabled or no other + * clients are making use of it. + */ +extern int mfd_shared_cell_enable(struct platform_device *pdev); +extern int mfd_shared_cell_disable(struct platform_device *pdev); + /* * Given a platform device that's been created by mfd_add_devices(), fetch * the mfd_cell that created it. @@ -69,7 +81,7 @@ static inline void *mfd_get_data(struct platform_device *pdev) } extern int mfd_add_devices(struct device *parent, int id, - const struct mfd_cell *cells, int n_devs, + struct mfd_cell *cells, int n_devs, struct resource *mem_base, int irq_base); -- cgit v1.2.3 From a9bbba996302344b1fac7773cf8198f6fee35ac1 Mon Sep 17 00:00:00 2001 From: Andres Salomon Date: Thu, 17 Feb 2011 19:07:35 -0800 Subject: mfd: add platform_device sharing support for mfd This adds functions to enable platform_device sharing for mfd clients. Each platform driver (mfd client) that wants to share an mfd_cell's platform_device uses the mfd_shared_platform_driver_{un,}register() functions instead of platform_driver_{un,}register(). Along with registering the platform driver, these also register a new platform device with the same characteristics as the original cell, but a different name. Given an mfd_cell with the name "foo", drivers that want to share access to its resources can call mfd_shared_platform_driver_register with platform drivers named (for example) "bar" and "baz". This will register two platform devices and drivers named "bar" and "baz" that share the same cell as the platform device "foo". The drivers can then call "foo" cell's enable hooks (or mfd_shared_cell_enable) to enable resources, and obtain platform resources as they normally would. This deals with platform handling only; mfd driver-specific details, hardware handling, refcounting, etc are all dealt with separately. Signed-off-by: Andres Salomon Signed-off-by: Samuel Ortiz --- include/linux/mfd/core.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/core.h b/include/linux/mfd/core.h index 22a2f5ebd9db..ed9970412cc2 100644 --- a/include/linux/mfd/core.h +++ b/include/linux/mfd/core.h @@ -87,4 +87,13 @@ extern int mfd_add_devices(struct device *parent, int id, extern void mfd_remove_devices(struct device *parent); +/* + * For MFD drivers with clients sharing access to resources, these create + * multiple platform devices per cell. Contention handling must still be + * handled via drivers (ie, with enable/disable hooks). + */ +extern int mfd_shared_platform_driver_register(struct platform_driver *drv, + const char *cellname); +extern void mfd_shared_platform_driver_unregister(struct platform_driver *drv); + #endif -- cgit v1.2.3 From f99c1d4f94f91fd3a20bd2eaa3be9c5e7d2668eb Mon Sep 17 00:00:00 2001 From: Keerthy Date: Tue, 1 Mar 2011 19:12:26 +0530 Subject: mfd: Add twl4030 madc driver Introducing a driver for MADC on TWL4030 powerIC. MADC stands for monitoring ADC. This driver monitors the real time conversion of analog signals like battery temperature, battery cuurent etc. Signed-off-by: Keerthy Signed-off-by: Samuel Ortiz --- include/linux/i2c/twl4030-madc.h | 141 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 141 insertions(+) create mode 100644 include/linux/i2c/twl4030-madc.h (limited to 'include/linux') diff --git a/include/linux/i2c/twl4030-madc.h b/include/linux/i2c/twl4030-madc.h new file mode 100644 index 000000000000..6427d298fbfc --- /dev/null +++ b/include/linux/i2c/twl4030-madc.h @@ -0,0 +1,141 @@ +/* + * twl4030_madc.h - Header for TWL4030 MADC + * + * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/ + * J Keerthy + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA + * 02110-1301 USA + * + */ + +#ifndef _TWL4030_MADC_H +#define _TWL4030_MADC_H + +struct twl4030_madc_conversion_method { + u8 sel; + u8 avg; + u8 rbase; + u8 ctrl; +}; + +#define TWL4030_MADC_MAX_CHANNELS 16 + + +/* + * twl4030_madc_request- madc request packet for channel conversion + * @channels: 16 bit bitmap for individual channels + * @do_avgP: sample the input channel for 4 consecutive cycles + * @method: RT, SW1, SW2 + * @type: Polling or interrupt based method + */ + +struct twl4030_madc_request { + unsigned long channels; + u16 do_avg; + u16 method; + u16 type; + bool active; + bool result_pending; + int rbuf[TWL4030_MADC_MAX_CHANNELS]; + void (*func_cb)(int len, int channels, int *buf); +}; + +enum conversion_methods { + TWL4030_MADC_RT, + TWL4030_MADC_SW1, + TWL4030_MADC_SW2, + TWL4030_MADC_NUM_METHODS +}; + +enum sample_type { + TWL4030_MADC_WAIT, + TWL4030_MADC_IRQ_ONESHOT, + TWL4030_MADC_IRQ_REARM +}; + +#define TWL4030_MADC_CTRL1 0x00 +#define TWL4030_MADC_CTRL2 0x01 + +#define TWL4030_MADC_RTSELECT_LSB 0x02 +#define TWL4030_MADC_SW1SELECT_LSB 0x06 +#define TWL4030_MADC_SW2SELECT_LSB 0x0A + +#define TWL4030_MADC_RTAVERAGE_LSB 0x04 +#define TWL4030_MADC_SW1AVERAGE_LSB 0x08 +#define TWL4030_MADC_SW2AVERAGE_LSB 0x0C + +#define TWL4030_MADC_CTRL_SW1 0x12 +#define TWL4030_MADC_CTRL_SW2 0x13 + +#define TWL4030_MADC_RTCH0_LSB 0x17 +#define TWL4030_MADC_GPCH0_LSB 0x37 + +#define TWL4030_MADC_MADCON (1 << 0) /* MADC power on */ +#define TWL4030_MADC_BUSY (1 << 0) /* MADC busy */ +/* MADC conversion completion */ +#define TWL4030_MADC_EOC_SW (1 << 1) +/* MADC SWx start conversion */ +#define TWL4030_MADC_SW_START (1 << 5) +#define TWL4030_MADC_ADCIN0 (1 << 0) +#define TWL4030_MADC_ADCIN1 (1 << 1) +#define TWL4030_MADC_ADCIN2 (1 << 2) +#define TWL4030_MADC_ADCIN3 (1 << 3) +#define TWL4030_MADC_ADCIN4 (1 << 4) +#define TWL4030_MADC_ADCIN5 (1 << 5) +#define TWL4030_MADC_ADCIN6 (1 << 6) +#define TWL4030_MADC_ADCIN7 (1 << 7) +#define TWL4030_MADC_ADCIN8 (1 << 8) +#define TWL4030_MADC_ADCIN9 (1 << 9) +#define TWL4030_MADC_ADCIN10 (1 << 10) +#define TWL4030_MADC_ADCIN11 (1 << 11) +#define TWL4030_MADC_ADCIN12 (1 << 12) +#define TWL4030_MADC_ADCIN13 (1 << 13) +#define TWL4030_MADC_ADCIN14 (1 << 14) +#define TWL4030_MADC_ADCIN15 (1 << 15) + +/* Fixed channels */ +#define TWL4030_MADC_BTEMP TWL4030_MADC_ADCIN1 +#define TWL4030_MADC_VBUS TWL4030_MADC_ADCIN8 +#define TWL4030_MADC_VBKB TWL4030_MADC_ADCIN9 +#define TWL4030_MADC_ICHG TWL4030_MADC_ADCIN10 +#define TWL4030_MADC_VCHG TWL4030_MADC_ADCIN11 +#define TWL4030_MADC_VBAT TWL4030_MADC_ADCIN12 + +/* Step size and prescaler ratio */ +#define TEMP_STEP_SIZE 147 +#define TEMP_PSR_R 100 +#define CURR_STEP_SIZE 147 +#define CURR_PSR_R1 44 +#define CURR_PSR_R2 88 + +#define TWL4030_BCI_BCICTL1 0x23 +#define TWL4030_BCI_CGAIN 0x020 +#define TWL4030_BCI_MESBAT (1 << 1) +#define TWL4030_BCI_TYPEN (1 << 4) +#define TWL4030_BCI_ITHEN (1 << 3) + +#define REG_BCICTL2 0x024 +#define TWL4030_BCI_ITHSENS 0x007 + +struct twl4030_madc_user_parms { + int channel; + int average; + int status; + u16 result; +}; + +int twl4030_madc_conversion(struct twl4030_madc_request *conv); +int twl4030_get_madc_conversion(int channel_no); +#endif -- cgit v1.2.3 From 93619c2106e2c968a260ebffb75ddc5efa567c16 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Tue, 1 Mar 2011 20:12:46 +0000 Subject: mfd: Add platform data to support multiple WM831x devices per board If a system contains multiple WM831x devices we need to pass a device number through to the MFD so that we use unique device IDs when we instantiate child devices. In order to get support for this into 2.6.39 add some platform data to support the configuration, but no implementation as yet. Signed-off-by: Mark Brown Signed-off-by: Samuel Ortiz --- include/linux/mfd/wm831x/pdata.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/wm831x/pdata.h b/include/linux/mfd/wm831x/pdata.h index ac3aa73943e7..afe4db49402d 100644 --- a/include/linux/mfd/wm831x/pdata.h +++ b/include/linux/mfd/wm831x/pdata.h @@ -104,6 +104,9 @@ struct wm831x_watchdog_pdata { #define WM831X_MAX_ISINK 2 struct wm831x_pdata { + /** Used to distinguish multiple WM831x chips */ + int wm831x_num; + /** Called before subdevices are set up */ int (*pre_init)(struct wm831x *wm831x); /** Called after subdevices are set up */ -- cgit v1.2.3 From adceed6263887e04721b477e6504aa24789f827d Mon Sep 17 00:00:00 2001 From: Mattias Wallin Date: Wed, 2 Mar 2011 11:51:11 +0100 Subject: mfd: ab8500 chip revision 3.0 support This patch adds support for ab8500 chip revision cut 3.0. Also rephrased from Changes to Author in the header. Signed-off-by: Mattias Wallin Acked-by: Linus Walleij Signed-off-by: Samuel Ortiz --- include/linux/mfd/ab8500.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/ab8500.h b/include/linux/mfd/ab8500.h index 37f56b7c4c15..56f8dea72152 100644 --- a/include/linux/mfd/ab8500.h +++ b/include/linux/mfd/ab8500.h @@ -111,8 +111,8 @@ * @dev: parent device * @lock: read/write operations lock * @irq_lock: genirq bus lock - * @revision: chip revision * @irq: irq line + * @chip_id: chip revision id * @write: register write * @read: register read * @rx_buf: rx buf for SPI @@ -124,7 +124,7 @@ struct ab8500 { struct device *dev; struct mutex lock; struct mutex irq_lock; - int revision; + int irq_base; int irq; u8 chip_id; -- cgit v1.2.3 From f77289ac25b0c81acbed6f9c17cb14809a04e18b Mon Sep 17 00:00:00 2001 From: Andres Salomon Date: Thu, 3 Mar 2011 09:51:58 -0800 Subject: mfd: Rename mfd_shared_cell_{en,dis}able to drop the "shared" part As requested by Samuel, there's not really any reason to have "shared" in the name. This also modifies the only user of the function, as well. Signed-off-by: Andres Salomon Signed-off-by: Samuel Ortiz --- include/linux/mfd/core.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/core.h b/include/linux/mfd/core.h index ed9970412cc2..1408bf8eed5f 100644 --- a/include/linux/mfd/core.h +++ b/include/linux/mfd/core.h @@ -59,8 +59,8 @@ struct mfd_cell { * being called only when a device is first being enabled or no other * clients are making use of it. */ -extern int mfd_shared_cell_enable(struct platform_device *pdev); -extern int mfd_shared_cell_disable(struct platform_device *pdev); +extern int mfd_cell_enable(struct platform_device *pdev); +extern int mfd_cell_disable(struct platform_device *pdev); /* * Given a platform device that's been created by mfd_add_devices(), fetch -- cgit v1.2.3 From 527e7e9a82ec95cdb8f694855004b3d262efd09f Mon Sep 17 00:00:00 2001 From: MyungJoo Ham Date: Fri, 4 Mar 2011 15:50:26 +0900 Subject: mfd: MAX8997/8966 support MAX8997/MAX8966 chip is a multi-function device with I2C bussses. The chip includes PMIC, RTC, Fuel Gauge, MUIC, Haptic, Flash control, and Battery (charging) control. This patch is an initial release of a MAX8997/8966 driver that supports to enable the chip with its primary I2C bus that connects every device mentioned above except for Fuel Gauge, which uses another I2C bus. The fuel gauge is not supported by this mfd driver and is supported by a seperated driver of MAX17042 Fuel Gauge (yes, the fuel gauge part is compatible with MAX17042). Signed-off-by: MyungJoo Ham Signed-off-by: Kyungmin Park Reviewed-by: Mark Brown Signed-off-by: Samuel Ortiz --- include/linux/mfd/max8997-private.h | 347 ++++++++++++++++++++++++++++++++++++ include/linux/mfd/max8997.h | 88 +++++++++ 2 files changed, 435 insertions(+) create mode 100644 include/linux/mfd/max8997-private.h create mode 100644 include/linux/mfd/max8997.h (limited to 'include/linux') diff --git a/include/linux/mfd/max8997-private.h b/include/linux/mfd/max8997-private.h new file mode 100644 index 000000000000..93a9477e075f --- /dev/null +++ b/include/linux/mfd/max8997-private.h @@ -0,0 +1,347 @@ +/* + * max8997.h - Voltage regulator driver for the Maxim 8997 + * + * Copyright (C) 2010 Samsung Electrnoics + * MyungJoo Ham + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#ifndef __LINUX_MFD_MAX8997_PRIV_H +#define __LINUX_MFD_MAX8997_PRIV_H + +#include + +enum max8997_pmic_reg { + MAX8997_REG_PMIC_ID0 = 0x00, + MAX8997_REG_PMIC_ID1 = 0x01, + MAX8997_REG_INTSRC = 0x02, + MAX8997_REG_INT1 = 0x03, + MAX8997_REG_INT2 = 0x04, + MAX8997_REG_INT3 = 0x05, + MAX8997_REG_INT4 = 0x06, + + MAX8997_REG_INT1MSK = 0x08, + MAX8997_REG_INT2MSK = 0x09, + MAX8997_REG_INT3MSK = 0x0a, + MAX8997_REG_INT4MSK = 0x0b, + + MAX8997_REG_STATUS1 = 0x0d, + MAX8997_REG_STATUS2 = 0x0e, + MAX8997_REG_STATUS3 = 0x0f, + MAX8997_REG_STATUS4 = 0x10, + + MAX8997_REG_MAINCON1 = 0x13, + MAX8997_REG_MAINCON2 = 0x14, + MAX8997_REG_BUCKRAMP = 0x15, + + MAX8997_REG_BUCK1CTRL = 0x18, + MAX8997_REG_BUCK1DVS1 = 0x19, + MAX8997_REG_BUCK1DVS2 = 0x1a, + MAX8997_REG_BUCK1DVS3 = 0x1b, + MAX8997_REG_BUCK1DVS4 = 0x1c, + MAX8997_REG_BUCK1DVS5 = 0x1d, + MAX8997_REG_BUCK1DVS6 = 0x1e, + MAX8997_REG_BUCK1DVS7 = 0x1f, + MAX8997_REG_BUCK1DVS8 = 0x20, + MAX8997_REG_BUCK2CTRL = 0x21, + MAX8997_REG_BUCK2DVS1 = 0x22, + MAX8997_REG_BUCK2DVS2 = 0x23, + MAX8997_REG_BUCK2DVS3 = 0x24, + MAX8997_REG_BUCK2DVS4 = 0x25, + MAX8997_REG_BUCK2DVS5 = 0x26, + MAX8997_REG_BUCK2DVS6 = 0x27, + MAX8997_REG_BUCK2DVS7 = 0x28, + MAX8997_REG_BUCK2DVS8 = 0x29, + MAX8997_REG_BUCK3CTRL = 0x2a, + MAX8997_REG_BUCK3DVS = 0x2b, + MAX8997_REG_BUCK4CTRL = 0x2c, + MAX8997_REG_BUCK4DVS = 0x2d, + MAX8997_REG_BUCK5CTRL = 0x2e, + MAX8997_REG_BUCK5DVS1 = 0x2f, + MAX8997_REG_BUCK5DVS2 = 0x30, + MAX8997_REG_BUCK5DVS3 = 0x31, + MAX8997_REG_BUCK5DVS4 = 0x32, + MAX8997_REG_BUCK5DVS5 = 0x33, + MAX8997_REG_BUCK5DVS6 = 0x34, + MAX8997_REG_BUCK5DVS7 = 0x35, + MAX8997_REG_BUCK5DVS8 = 0x36, + MAX8997_REG_BUCK6CTRL = 0x37, + MAX8997_REG_BUCK6BPSKIPCTRL = 0x38, + MAX8997_REG_BUCK7CTRL = 0x39, + MAX8997_REG_BUCK7DVS = 0x3a, + MAX8997_REG_LDO1CTRL = 0x3b, + MAX8997_REG_LDO2CTRL = 0x3c, + MAX8997_REG_LDO3CTRL = 0x3d, + MAX8997_REG_LDO4CTRL = 0x3e, + MAX8997_REG_LDO5CTRL = 0x3f, + MAX8997_REG_LDO6CTRL = 0x40, + MAX8997_REG_LDO7CTRL = 0x41, + MAX8997_REG_LDO8CTRL = 0x42, + MAX8997_REG_LDO9CTRL = 0x43, + MAX8997_REG_LDO10CTRL = 0x44, + MAX8997_REG_LDO11CTRL = 0x45, + MAX8997_REG_LDO12CTRL = 0x46, + MAX8997_REG_LDO13CTRL = 0x47, + MAX8997_REG_LDO14CTRL = 0x48, + MAX8997_REG_LDO15CTRL = 0x49, + MAX8997_REG_LDO16CTRL = 0x4a, + MAX8997_REG_LDO17CTRL = 0x4b, + MAX8997_REG_LDO18CTRL = 0x4c, + MAX8997_REG_LDO21CTRL = 0x4d, + + MAX8997_REG_MBCCTRL1 = 0x50, + MAX8997_REG_MBCCTRL2 = 0x51, + MAX8997_REG_MBCCTRL3 = 0x52, + MAX8997_REG_MBCCTRL4 = 0x53, + MAX8997_REG_MBCCTRL5 = 0x54, + MAX8997_REG_MBCCTRL6 = 0x55, + MAX8997_REG_OTPCGHCVS = 0x56, + + MAX8997_REG_SAFEOUTCTRL = 0x5a, + + MAX8997_REG_LBCNFG1 = 0x5e, + MAX8997_REG_LBCNFG2 = 0x5f, + MAX8997_REG_BBCCTRL = 0x60, + + MAX8997_REG_FLASH1_CUR = 0x63, /* 0x63 ~ 0x6e for FLASH */ + MAX8997_REG_FLASH2_CUR = 0x64, + MAX8997_REG_MOVIE_CUR = 0x65, + MAX8997_REG_GSMB_CUR = 0x66, + MAX8997_REG_BOOST_CNTL = 0x67, + MAX8997_REG_LEN_CNTL = 0x68, + MAX8997_REG_FLASH_CNTL = 0x69, + MAX8997_REG_WDT_CNTL = 0x6a, + MAX8997_REG_MAXFLASH1 = 0x6b, + MAX8997_REG_MAXFLASH2 = 0x6c, + MAX8997_REG_FLASHSTATUS = 0x6d, + MAX8997_REG_FLASHSTATUSMASK = 0x6e, + + MAX8997_REG_GPIOCNTL1 = 0x70, + MAX8997_REG_GPIOCNTL2 = 0x71, + MAX8997_REG_GPIOCNTL3 = 0x72, + MAX8997_REG_GPIOCNTL4 = 0x73, + MAX8997_REG_GPIOCNTL5 = 0x74, + MAX8997_REG_GPIOCNTL6 = 0x75, + MAX8997_REG_GPIOCNTL7 = 0x76, + MAX8997_REG_GPIOCNTL8 = 0x77, + MAX8997_REG_GPIOCNTL9 = 0x78, + MAX8997_REG_GPIOCNTL10 = 0x79, + MAX8997_REG_GPIOCNTL11 = 0x7a, + MAX8997_REG_GPIOCNTL12 = 0x7b, + + MAX8997_REG_LDO1CONFIG = 0x80, + MAX8997_REG_LDO2CONFIG = 0x81, + MAX8997_REG_LDO3CONFIG = 0x82, + MAX8997_REG_LDO4CONFIG = 0x83, + MAX8997_REG_LDO5CONFIG = 0x84, + MAX8997_REG_LDO6CONFIG = 0x85, + MAX8997_REG_LDO7CONFIG = 0x86, + MAX8997_REG_LDO8CONFIG = 0x87, + MAX8997_REG_LDO9CONFIG = 0x88, + MAX8997_REG_LDO10CONFIG = 0x89, + MAX8997_REG_LDO11CONFIG = 0x8a, + MAX8997_REG_LDO12CONFIG = 0x8b, + MAX8997_REG_LDO13CONFIG = 0x8c, + MAX8997_REG_LDO14CONFIG = 0x8d, + MAX8997_REG_LDO15CONFIG = 0x8e, + MAX8997_REG_LDO16CONFIG = 0x8f, + MAX8997_REG_LDO17CONFIG = 0x90, + MAX8997_REG_LDO18CONFIG = 0x91, + MAX8997_REG_LDO21CONFIG = 0x92, + + MAX8997_REG_DVSOKTIMER1 = 0x97, + MAX8997_REG_DVSOKTIMER2 = 0x98, + MAX8997_REG_DVSOKTIMER4 = 0x99, + MAX8997_REG_DVSOKTIMER5 = 0x9a, + + MAX8997_REG_PMIC_END = 0x9b, +}; + +enum max8997_muic_reg { + MAX8997_MUIC_REG_ID = 0x0, + MAX8997_MUIC_REG_INT1 = 0x1, + MAX8997_MUIC_REG_INT2 = 0x2, + MAX8997_MUIC_REG_INT3 = 0x3, + MAX8997_MUIC_REG_STATUS1 = 0x4, + MAX8997_MUIC_REG_STATUS2 = 0x5, + MAX8997_MUIC_REG_STATUS3 = 0x6, + MAX8997_MUIC_REG_INTMASK1 = 0x7, + MAX8997_MUIC_REG_INTMASK2 = 0x8, + MAX8997_MUIC_REG_INTMASK3 = 0x9, + MAX8997_MUIC_REG_CDETCTRL = 0xa, + + MAX8997_MUIC_REG_CONTROL1 = 0xc, + MAX8997_MUIC_REG_CONTROL2 = 0xd, + MAX8997_MUIC_REG_CONTROL3 = 0xe, + + MAX8997_MUIC_REG_END = 0xf, +}; + +enum max8997_haptic_reg { + MAX8997_HAPTIC_REG_GENERAL = 0x00, + MAX8997_HAPTIC_REG_CONF1 = 0x01, + MAX8997_HAPTIC_REG_CONF2 = 0x02, + MAX8997_HAPTIC_REG_DRVCONF = 0x03, + MAX8997_HAPTIC_REG_CYCLECONF1 = 0x04, + MAX8997_HAPTIC_REG_CYCLECONF2 = 0x05, + MAX8997_HAPTIC_REG_SIGCONF1 = 0x06, + MAX8997_HAPTIC_REG_SIGCONF2 = 0x07, + MAX8997_HAPTIC_REG_SIGCONF3 = 0x08, + MAX8997_HAPTIC_REG_SIGCONF4 = 0x09, + MAX8997_HAPTIC_REG_SIGDC1 = 0x0a, + MAX8997_HAPTIC_REG_SIGDC2 = 0x0b, + MAX8997_HAPTIC_REG_SIGPWMDC1 = 0x0c, + MAX8997_HAPTIC_REG_SIGPWMDC2 = 0x0d, + MAX8997_HAPTIC_REG_SIGPWMDC3 = 0x0e, + MAX8997_HAPTIC_REG_SIGPWMDC4 = 0x0f, + MAX8997_HAPTIC_REG_MTR_REV = 0x10, + + MAX8997_HAPTIC_REG_END = 0x11, +}; + +/* slave addr = 0x0c: using "2nd part" of rev4 datasheet */ +enum max8997_rtc_reg { + MAX8997_RTC_CTRLMASK = 0x02, + MAX8997_RTC_CTRL = 0x03, + MAX8997_RTC_UPDATE1 = 0x04, + MAX8997_RTC_UPDATE2 = 0x05, + MAX8997_RTC_WTSR_SMPL = 0x06, + + MAX8997_RTC_SEC = 0x10, + MAX8997_RTC_MIN = 0x11, + MAX8997_RTC_HOUR = 0x12, + MAX8997_RTC_DAY_OF_WEEK = 0x13, + MAX8997_RTC_MONTH = 0x14, + MAX8997_RTC_YEAR = 0x15, + MAX8997_RTC_DAY_OF_MONTH = 0x16, + MAX8997_RTC_ALARM1_SEC = 0x17, + MAX8997_RTC_ALARM1_MIN = 0x18, + MAX8997_RTC_ALARM1_HOUR = 0x19, + MAX8997_RTC_ALARM1_DAY_OF_WEEK = 0x1a, + MAX8997_RTC_ALARM1_MONTH = 0x1b, + MAX8997_RTC_ALARM1_YEAR = 0x1c, + MAX8997_RTC_ALARM1_DAY_OF_MONTH = 0x1d, + MAX8997_RTC_ALARM2_SEC = 0x1e, + MAX8997_RTC_ALARM2_MIN = 0x1f, + MAX8997_RTC_ALARM2_HOUR = 0x20, + MAX8997_RTC_ALARM2_DAY_OF_WEEK = 0x21, + MAX8997_RTC_ALARM2_MONTH = 0x22, + MAX8997_RTC_ALARM2_YEAR = 0x23, + MAX8997_RTC_ALARM2_DAY_OF_MONTH = 0x24, +}; + +enum max8997_irq_source { + PMIC_INT1 = 0, + PMIC_INT2, + PMIC_INT3, + PMIC_INT4, + + FUEL_GAUGE, /* Ignored (MAX17042 driver handles) */ + + MUIC_INT1, + MUIC_INT2, + MUIC_INT3, + + GPIO_LOW, /* Not implemented */ + GPIO_HI, /* Not implemented */ + + FLASH_STATUS, /* Not implemented */ + + MAX8997_IRQ_GROUP_NR, +}; + +enum max8997_irq { + MAX8997_PMICIRQ_PWRONR, + MAX8997_PMICIRQ_PWRONF, + MAX8997_PMICIRQ_PWRON1SEC, + MAX8997_PMICIRQ_JIGONR, + MAX8997_PMICIRQ_JIGONF, + MAX8997_PMICIRQ_LOWBAT2, + MAX8997_PMICIRQ_LOWBAT1, + + MAX8997_PMICIRQ_JIGR, + MAX8997_PMICIRQ_JIGF, + MAX8997_PMICIRQ_MR, + MAX8997_PMICIRQ_DVS1OK, + MAX8997_PMICIRQ_DVS2OK, + MAX8997_PMICIRQ_DVS3OK, + MAX8997_PMICIRQ_DVS4OK, + + MAX8997_PMICIRQ_CHGINS, + MAX8997_PMICIRQ_CHGRM, + MAX8997_PMICIRQ_DCINOVP, + MAX8997_PMICIRQ_TOPOFFR, + MAX8997_PMICIRQ_CHGRSTF, + MAX8997_PMICIRQ_MBCHGTMEXPD, + + MAX8997_PMICIRQ_RTC60S, + MAX8997_PMICIRQ_RTCA1, + MAX8997_PMICIRQ_RTCA2, + MAX8997_PMICIRQ_SMPL_INT, + MAX8997_PMICIRQ_RTC1S, + MAX8997_PMICIRQ_WTSR, + + MAX8997_MUICIRQ_ADCError, + MAX8997_MUICIRQ_ADCLow, + MAX8997_MUICIRQ_ADC, + + MAX8997_MUICIRQ_VBVolt, + MAX8997_MUICIRQ_DBChg, + MAX8997_MUICIRQ_DCDTmr, + MAX8997_MUICIRQ_ChgDetRun, + MAX8997_MUICIRQ_ChgTyp, + + MAX8997_MUICIRQ_OVP, + + MAX8997_IRQ_NR, +}; + +#define MAX8997_REG_BUCK1DVS(x) (MAX8997_REG_BUCK1DVS1 + (x) - 1) +#define MAX8997_REG_BUCK2DVS(x) (MAX8997_REG_BUCK2DVS1 + (x) - 1) +#define MAX8997_REG_BUCK5DVS(x) (MAX8997_REG_BUCK5DVS1 + (x) - 1) + +struct max8997_dev { + struct device *dev; + struct i2c_client *i2c; /* 0xcc / PMIC, Battery Control, and FLASH */ + struct i2c_client *rtc; /* slave addr 0x0c */ + struct i2c_client *haptic; /* slave addr 0x90 */ + struct i2c_client *muic; /* slave addr 0x4a */ + struct mutex iolock; + + int type; + struct platform_device *battery; /* battery control (not fuel gauge) */ + + bool wakeup; + + /* For hibernation */ + u8 reg_dump[MAX8997_REG_PMIC_END + MAX8997_MUIC_REG_END + + MAX8997_HAPTIC_REG_END]; +}; + +enum max8997_types { + TYPE_MAX8997, + TYPE_MAX8966, +}; + +extern int max8997_read_reg(struct i2c_client *i2c, u8 reg, u8 *dest); +extern int max8997_bulk_read(struct i2c_client *i2c, u8 reg, int count, + u8 *buf); +extern int max8997_write_reg(struct i2c_client *i2c, u8 reg, u8 value); +extern int max8997_bulk_write(struct i2c_client *i2c, u8 reg, int count, + u8 *buf); +extern int max8997_update_reg(struct i2c_client *i2c, u8 reg, u8 val, u8 mask); + +#endif /* __LINUX_MFD_MAX8997_PRIV_H */ diff --git a/include/linux/mfd/max8997.h b/include/linux/mfd/max8997.h new file mode 100644 index 000000000000..d0d9136c104b --- /dev/null +++ b/include/linux/mfd/max8997.h @@ -0,0 +1,88 @@ +/* + * max8997.h - Driver for the Maxim 8997/8966 + * + * Copyright (C) 2009-2010 Samsung Electrnoics + * MyungJoo Ham + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * This driver is based on max8998.h + * + * MAX8997 has PMIC, MUIC, HAPTIC, RTC, FLASH, and Fuel Gauge devices. + * Except Fuel Gauge, every device shares the same I2C bus and included in + * this mfd driver. Although the fuel gauge is included in the chip, it is + * excluded from the driver because a) it has a different I2C bus from + * others and b) it can be enabled simply by using MAX17042 driver. + */ + +#ifndef __LINUX_MFD_MAX8998_H +#define __LINUX_MFD_MAX8998_H + +#include + +/* MAX8997/8966 regulator IDs */ +enum max8998_regulators { + MAX8997_LDO1 = 0, + MAX8997_LDO2, + MAX8997_LDO3, + MAX8997_LDO4, + MAX8997_LDO5, + MAX8997_LDO6, + MAX8997_LDO7, + MAX8997_LDO8, + MAX8997_LDO9, + MAX8997_LDO10, + MAX8997_LDO11, + MAX8997_LDO12, + MAX8997_LDO13, + MAX8997_LDO14, + MAX8997_LDO15, + MAX8997_LDO16, + MAX8997_LDO17, + MAX8997_LDO18, + MAX8997_LDO21, + MAX8997_BUCK1, + MAX8997_BUCK2, + MAX8997_BUCK3, + MAX8997_BUCK4, + MAX8997_BUCK5, + MAX8997_BUCK6, + MAX8997_BUCK7, + MAX8997_EN32KHZ_AP, + MAX8997_EN32KHZ_CP, + MAX8997_ENVICHG, + MAX8997_ESAFEOUT1, + MAX8997_ESAFEOUT2, + MAX8997_CHARGER_CV, /* control MBCCV of MBCCTRL3 */ + MAX8997_CHARGER, /* charger current, MBCCTRL4 */ + MAX8997_CHARGER_TOPOFF, /* MBCCTRL5 */ +}; + +struct max8997_regulator_data { + int id; + struct regulator_init_data *initdata; +}; + +struct max8997_platform_data { + bool wakeup; + /* PMIC: Not implemented */ + /* MUIC: Not implemented */ + /* HAPTIC: Not implemented */ + /* RTC: Not implemented */ + /* Flash: Not implemented */ + /* Charger control: Not implemented */ +}; + +#endif /* __LINUX_MFD_MAX8998_H */ -- cgit v1.2.3 From cf16943947cef089c564d2be0ae9d96a285f495e Mon Sep 17 00:00:00 2001 From: Daniel Willerud Date: Sat, 5 Mar 2011 11:46:01 +0100 Subject: mfd: Move ab8500 gpadc header to subdir This moves the ab8500-gpadc.h header down into the ab8500/ subdir in include/linux/mfd and fixes some whitespace in the header in the process. Signed-off-by: Daniel Willerud Signed-off-by: Linus Walleij Signed-off-by: Samuel Ortiz --- include/linux/mfd/ab8500-gpadc.h | 28 ---------------------------- include/linux/mfd/ab8500/ab8500-gpadc.h | 28 ++++++++++++++++++++++++++++ 2 files changed, 28 insertions(+), 28 deletions(-) delete mode 100644 include/linux/mfd/ab8500-gpadc.h create mode 100644 include/linux/mfd/ab8500/ab8500-gpadc.h (limited to 'include/linux') diff --git a/include/linux/mfd/ab8500-gpadc.h b/include/linux/mfd/ab8500-gpadc.h deleted file mode 100644 index 9f6cc26bc734..000000000000 --- a/include/linux/mfd/ab8500-gpadc.h +++ /dev/null @@ -1,28 +0,0 @@ -/* - * Copyright (C) 2010 ST-Ericsson SA - * Licensed under GPLv2. - * - * Author: Arun R Murthy - */ - -#ifndef _AB8500_GPADC_H -#define _AB8500_GPADC_H - -/* GPADC source: From datasheet(ADCSwSel[4:0] in GPADCCtrl2) */ -#define BAT_CTRL 0x01 -#define BTEMP_BALL 0x02 -#define MAIN_CHARGER_V 0x03 -#define ACC_DETECT1 0x04 -#define ACC_DETECT2 0x05 -#define ADC_AUX1 0x06 -#define ADC_AUX2 0x07 -#define MAIN_BAT_V 0x08 -#define VBUS_V 0x09 -#define MAIN_CHARGER_C 0x0A -#define USB_CHARGER_C 0x0B -#define BK_BAT_V 0x0C -#define DIE_TEMP 0x0D - -int ab8500_gpadc_convert(u8 input); - -#endif /* _AB8500_GPADC_H */ diff --git a/include/linux/mfd/ab8500/ab8500-gpadc.h b/include/linux/mfd/ab8500/ab8500-gpadc.h new file mode 100644 index 000000000000..74b87dde9cd0 --- /dev/null +++ b/include/linux/mfd/ab8500/ab8500-gpadc.h @@ -0,0 +1,28 @@ +/* + * Copyright (C) 2010 ST-Ericsson SA + * Licensed under GPLv2. + * + * Author: Arun R Murthy + */ + +#ifndef _AB8500_GPADC_H +#define _AB8500_GPADC_H + +/* GPADC source: From datasheet(ADCSwSel[4:0] in GPADCCtrl2) */ +#define BAT_CTRL 0x01 +#define BTEMP_BALL 0x02 +#define MAIN_CHARGER_V 0x03 +#define ACC_DETECT1 0x04 +#define ACC_DETECT2 0x05 +#define ADC_AUX1 0x06 +#define ADC_AUX2 0x07 +#define MAIN_BAT_V 0x08 +#define VBUS_V 0x09 +#define MAIN_CHARGER_C 0x0A +#define USB_CHARGER_C 0x0B +#define BK_BAT_V 0x0C +#define DIE_TEMP 0x0D + +int ab8500_gpadc_convert(u8 input); + +#endif /* _AB8500_GPADC_H */ -- cgit v1.2.3 From 6321992cd3c56bab6cc52e3384951e12616805a1 Mon Sep 17 00:00:00 2001 From: Daniel Willerud Date: Sat, 5 Mar 2011 11:46:13 +0100 Subject: mfd: Reentrance and revamp ab8500 gpadc fetching interface This revamps the interface so that AB8500 GPADCs are fetched by name. Probed GPADCs are added to a list and this list is searched for a matching GPADC. This makes it possible to have multiple AB8500 GPADC instances instead of it being a singleton, and rids the need to keep a GPADC pointer around in the core AB8500 MFD struct. Currently the match is made to the device name which is by default numbered from the device instance such as "ab8500-gpadc.0" but by using the .init_name field of the device a more intiutive naming for the GPADC blocks can be achieved if desired. Signed-off-by: Daniel Willerud Signed-off-by: Linus Walleij Signed-off-by: Samuel Ortiz --- include/linux/mfd/ab8500/ab8500-gpadc.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mfd/ab8500/ab8500-gpadc.h b/include/linux/mfd/ab8500/ab8500-gpadc.h index 74b87dde9cd0..46b954011f16 100644 --- a/include/linux/mfd/ab8500/ab8500-gpadc.h +++ b/include/linux/mfd/ab8500/ab8500-gpadc.h @@ -3,6 +3,7 @@ * Licensed under GPLv2. * * Author: Arun R Murthy + * Author: Daniel Willerud */ #ifndef _AB8500_GPADC_H @@ -23,6 +24,9 @@ #define BK_BAT_V 0x0C #define DIE_TEMP 0x0D -int ab8500_gpadc_convert(u8 input); +struct ab8500_gpadc; + +struct ab8500_gpadc *ab8500_gpadc_get(char *name); +int ab8500_gpadc_convert(struct ab8500_gpadc *gpadc, u8 input); #endif /* _AB8500_GPADC_H */ -- cgit v1.2.3 From adb70483f4d560323db9aaca5f066fde4d96f339 Mon Sep 17 00:00:00 2001 From: Haojian Zhuang Date: Mon, 7 Mar 2011 23:43:09 +0800 Subject: mfd: Adopt mfd_data in 88pm860x backlight Copy 88pm860x platform data into different mfd_data structure for backlight driver. So move the identification of device node from backlight driver to mfd driver. Signed-off-by: Haojian Zhuang Signed-off-by: Samuel Ortiz --- include/linux/mfd/88pm860x.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mfd/88pm860x.h b/include/linux/mfd/88pm860x.h index 4db1fbd8969e..f790d3766228 100644 --- a/include/linux/mfd/88pm860x.h +++ b/include/linux/mfd/88pm860x.h @@ -356,10 +356,10 @@ struct pm860x_platform_data { int i2c_port; /* Controlled by GI2C or PI2C */ int irq_mode; /* Clear interrupt by read/write(0/1) */ int irq_base; /* IRQ base number of 88pm860x */ + int num_backlights; struct regulator_init_data *regulator[PM8607_MAX_REGULATOR]; }; -extern char pm860x_backlight_name[][MFD_NAME_SIZE]; extern char pm860x_led_name[][MFD_NAME_SIZE]; extern int pm860x_reg_read(struct i2c_client *, int); -- cgit v1.2.3 From 3154c344696e58b7e15317cd624816dbe3832ad1 Mon Sep 17 00:00:00 2001 From: Haojian Zhuang Date: Mon, 7 Mar 2011 23:43:10 +0800 Subject: mfd: Adopt mfd_data in 88pm860x led Copy 88pm860x platform data into different mfd_data structure for led driver. So move the identification of device node from led driver to mfd driver. Signed-off-by: Haojian Zhuang Signed-off-by: Samuel Ortiz --- include/linux/mfd/88pm860x.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/88pm860x.h b/include/linux/mfd/88pm860x.h index f790d3766228..ff606140f4b4 100644 --- a/include/linux/mfd/88pm860x.h +++ b/include/linux/mfd/88pm860x.h @@ -356,12 +356,11 @@ struct pm860x_platform_data { int i2c_port; /* Controlled by GI2C or PI2C */ int irq_mode; /* Clear interrupt by read/write(0/1) */ int irq_base; /* IRQ base number of 88pm860x */ + int num_leds; int num_backlights; struct regulator_init_data *regulator[PM8607_MAX_REGULATOR]; }; -extern char pm860x_led_name[][MFD_NAME_SIZE]; - extern int pm860x_reg_read(struct i2c_client *, int); extern int pm860x_reg_write(struct i2c_client *, int, unsigned char); extern int pm860x_bulk_read(struct i2c_client *, int, int, unsigned char *); -- cgit v1.2.3 From 22aad0011e4728a29bf3775b6f5e2f9677abd8c0 Mon Sep 17 00:00:00 2001 From: Haojian Zhuang Date: Mon, 7 Mar 2011 23:43:11 +0800 Subject: mfd: Adopt mfd_data in 88pm860x regulator Copy 88pm860x platform data into different mfd_data structure for regulator driver. So move the identification of device node from regulator driver to mfd driver. Signed-off-by: Haojian Zhuang Acked-by: Mark Brown Signed-off-by: Samuel Ortiz --- include/linux/mfd/88pm860x.h | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/88pm860x.h b/include/linux/mfd/88pm860x.h index ff606140f4b4..a6f6f81efece 100644 --- a/include/linux/mfd/88pm860x.h +++ b/include/linux/mfd/88pm860x.h @@ -131,9 +131,11 @@ enum { PM8607_ID_LDO8, PM8607_ID_LDO9, PM8607_ID_LDO10, + PM8607_ID_LDO11, PM8607_ID_LDO12, PM8607_ID_LDO13, PM8607_ID_LDO14, + PM8607_ID_LDO15, PM8607_ID_RG_MAX, }; @@ -310,8 +312,6 @@ struct pm860x_chip { }; -#define PM8607_MAX_REGULATOR PM8607_ID_RG_MAX /* 3 Bucks, 13 LDOs */ - enum { GI2C_PORT = 0, PI2C_PORT, @@ -351,6 +351,7 @@ struct pm860x_platform_data { struct pm860x_led_pdata *led; struct pm860x_touch_pdata *touch; struct pm860x_power_pdata *power; + struct regulator_init_data *regulator; unsigned short companion_addr; /* I2C address of companion chip */ int i2c_port; /* Controlled by GI2C or PI2C */ @@ -358,7 +359,7 @@ struct pm860x_platform_data { int irq_base; /* IRQ base number of 88pm860x */ int num_leds; int num_backlights; - struct regulator_init_data *regulator[PM8607_MAX_REGULATOR]; + int num_regulators; }; extern int pm860x_reg_read(struct i2c_client *, int); -- cgit v1.2.3 From 09b034191acd1f95a749630fe366a84d3029930c Mon Sep 17 00:00:00 2001 From: Haojian Zhuang Date: Mon, 7 Mar 2011 23:43:16 +0800 Subject: mfd: Append additional read write on 88pm860x Append the additional read/write operation on 88pm860x for accessing test page in 88PM860x. Signed-off-by: Haojian Zhuang Signed-off-by: Samuel Ortiz --- include/linux/mfd/88pm860x.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/88pm860x.h b/include/linux/mfd/88pm860x.h index a6f6f81efece..8fba7972ff5f 100644 --- a/include/linux/mfd/88pm860x.h +++ b/include/linux/mfd/88pm860x.h @@ -368,6 +368,14 @@ extern int pm860x_bulk_read(struct i2c_client *, int, int, unsigned char *); extern int pm860x_bulk_write(struct i2c_client *, int, int, unsigned char *); extern int pm860x_set_bits(struct i2c_client *, int, unsigned char, unsigned char); +extern int pm860x_page_reg_read(struct i2c_client *, int); +extern int pm860x_page_reg_write(struct i2c_client *, int, unsigned char); +extern int pm860x_page_bulk_read(struct i2c_client *, int, int, + unsigned char *); +extern int pm860x_page_bulk_write(struct i2c_client *, int, int, + unsigned char *); +extern int pm860x_page_set_bits(struct i2c_client *, int, unsigned char, + unsigned char); extern int pm860x_device_init(struct pm860x_chip *chip, struct pm860x_platform_data *pdata) __devinit ; -- cgit v1.2.3 From e93c53870c6d77c40de8981da238af947d6aa084 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Thu, 10 Mar 2011 13:54:07 +0000 Subject: mfd: Add WM8994 bulk register write operation Signed-off-by: Mark Brown Signed-off-by: Samuel Ortiz --- include/linux/mfd/wm8994/core.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/wm8994/core.h b/include/linux/mfd/wm8994/core.h index ef4f0b6083a3..cb7d3ae7da8f 100644 --- a/include/linux/mfd/wm8994/core.h +++ b/include/linux/mfd/wm8994/core.h @@ -88,6 +88,8 @@ int wm8994_set_bits(struct wm8994 *wm8994, unsigned short reg, unsigned short mask, unsigned short val); int wm8994_bulk_read(struct wm8994 *wm8994, unsigned short reg, int count, u16 *buf); +int wm8994_bulk_write(struct wm8994 *wm8994, unsigned short reg, + int count, u16 *buf); /* Helper to save on boilerplate */ -- cgit v1.2.3 From bd6ca2cf50fbe3cc63513d026343035c3bd2e352 Mon Sep 17 00:00:00 2001 From: MyungJoo Ham Date: Fri, 11 Mar 2011 11:34:44 +0900 Subject: regulator: MAX8997/8966 support This patch supports PMIC/Regulator part of MAX8997/MAX8966 MFD. In this initial release, selecting voltages or current-limit and switching on/off the regulators are supported. Controlling voltages for DVS with GPIOs is not implemented fully and requires more considerations: it controls multiple bucks (selection of 1, 2, and 5) at the same time with SET1~3 gpios. Thus, when DVS-GPIO is activated, we lose the ability to control the voltage of a single buck regulator independently; i.e., contolling a buck affects other two bucks. Therefore, using the conventional regulator framework directly might be problematic. However, in this driver, we try to choose a setting without such side effect of affecting other regulators and then try to choose a setting with the minimum side effect (the sum of voltage changes in other regulators). On the other hand, controlling all the three bucks simultenously based on the voltage set table may help build cpufreq and similar system more robust; i.e., all the three voltages are consistent every time without glitches during transition. Signed-off-by: MyungJoo Ham Signed-off-by: Kyungmin Park Acked-by: Mark Brown Signed-off-by: Samuel Ortiz --- include/linux/mfd/max8997.h | 28 +++++++++++++++++++++++++++- 1 file changed, 27 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mfd/max8997.h b/include/linux/mfd/max8997.h index d0d9136c104b..cb671b3451bf 100644 --- a/include/linux/mfd/max8997.h +++ b/include/linux/mfd/max8997.h @@ -68,6 +68,8 @@ enum max8998_regulators { MAX8997_CHARGER_CV, /* control MBCCV of MBCCTRL3 */ MAX8997_CHARGER, /* charger current, MBCCTRL4 */ MAX8997_CHARGER_TOPOFF, /* MBCCTRL5 */ + + MAX8997_REG_MAX, }; struct max8997_regulator_data { @@ -77,7 +79,31 @@ struct max8997_regulator_data { struct max8997_platform_data { bool wakeup; - /* PMIC: Not implemented */ + /* IRQ: Not implemented */ + /* ---- PMIC ---- */ + struct max8997_regulator_data *regulators; + int num_regulators; + + /* + * SET1~3 DVS GPIOs control Buck1, 2, and 5 simultaneously. Therefore, + * With buckx_gpiodvs enabled, the buckx cannot be controlled + * independently. To control buckx (of 1, 2, and 5) independently, + * disable buckx_gpiodvs and control with BUCKxDVS1 register. + * + * When buckx_gpiodvs and bucky_gpiodvs are both enabled, set_voltage + * on buckx will change the voltage of bucky at the same time. + * + */ + bool ignore_gpiodvs_side_effect; + int buck125_gpios[3]; /* GPIO of [0]SET1, [1]SET2, [2]SET3 */ + int buck125_default_idx; /* Default value of SET1, 2, 3 */ + unsigned int buck1_voltage[8]; /* buckx_voltage in uV */ + bool buck1_gpiodvs; + unsigned int buck2_voltage[8]; + bool buck2_gpiodvs; + unsigned int buck5_voltage[8]; + bool buck5_gpiodvs; + /* MUIC: Not implemented */ /* HAPTIC: Not implemented */ /* RTC: Not implemented */ -- cgit v1.2.3 From c4fdd1163a37b498890564135cb61643ec93e5a3 Mon Sep 17 00:00:00 2001 From: Denis Turischev Date: Sun, 13 Mar 2011 17:26:40 +0200 Subject: pci_ids: Add Intel Tunnel Creek LPC Bridge device ID. Signed-off-by: Denis Turischev Acked-by: Jesse Barnes Signed-off-by: Samuel Ortiz --- include/linux/pci_ids.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h index bda221dfaf0a..11fd38151cc9 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -2737,6 +2737,7 @@ #define PCI_DEVICE_ID_INTEL_82372FB_1 0x7601 #define PCI_DEVICE_ID_INTEL_SCH_LPC 0x8119 #define PCI_DEVICE_ID_INTEL_SCH_IDE 0x811a +#define PCI_DEVICE_ID_INTEL_ITC_LPC 0x8186 #define PCI_DEVICE_ID_INTEL_82454GX 0x84c4 #define PCI_DEVICE_ID_INTEL_82450GX 0x84c5 #define PCI_DEVICE_ID_INTEL_82451NX 0x84ca -- cgit v1.2.3 From 798a8eee44da56b4f2e000ff81dfb49d09c65b71 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Wed, 9 Mar 2011 13:02:38 +0100 Subject: mfd: Add a core driver for TI TPS61050/TPS61052 chips v2 The TPS61050/TPS61052 are boost converters, LED drivers, LED flash drivers and a simple GPIO pin chips. Cc: Liam Girdwood Cc: Mark Brown Cc: Jonas Aberg Cc: Ola Lilja Signed-off-by: Linus Walleij Signed-off-by: Samuel Ortiz --- include/linux/mfd/tps6105x.h | 95 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 95 insertions(+) create mode 100644 include/linux/mfd/tps6105x.h (limited to 'include/linux') diff --git a/include/linux/mfd/tps6105x.h b/include/linux/mfd/tps6105x.h new file mode 100644 index 000000000000..f259244a56bd --- /dev/null +++ b/include/linux/mfd/tps6105x.h @@ -0,0 +1,95 @@ +/* + * Copyright (C) 2011 ST-Ericsson SA + * Written on behalf of Linaro for ST-Ericsson + * + * Author: Linus Walleij + * + * License terms: GNU General Public License (GPL) version 2 + */ +#ifndef MFD_TPS6105X_H +#define MFD_TPS6105X_H + +#include + +/* + * Register definitions to all subdrivers + */ +#define TPS6105X_REG_0 0x00 +#define TPS6105X_REG0_MODE_SHIFT 6 +#define TPS6105X_REG0_MODE_MASK (0x03<<6) +/* These defines for both reg0 and reg1 */ +#define TPS6105X_REG0_MODE_SHUTDOWN 0x00 +#define TPS6105X_REG0_MODE_TORCH 0x01 +#define TPS6105X_REG0_MODE_TORCH_FLASH 0x02 +#define TPS6105X_REG0_MODE_VOLTAGE 0x03 +#define TPS6105X_REG0_VOLTAGE_SHIFT 4 +#define TPS6105X_REG0_VOLTAGE_MASK (3<<4) +#define TPS6105X_REG0_VOLTAGE_450 0 +#define TPS6105X_REG0_VOLTAGE_500 1 +#define TPS6105X_REG0_VOLTAGE_525 2 +#define TPS6105X_REG0_VOLTAGE_500_2 3 +#define TPS6105X_REG0_DIMMING_SHIFT 3 +#define TPS6105X_REG0_TORCHC_SHIFT 0 +#define TPS6105X_REG0_TORCHC_MASK (7<<0) +#define TPS6105X_REG0_TORCHC_0 0x00 +#define TPS6105X_REG0_TORCHC_50 0x01 +#define TPS6105X_REG0_TORCHC_75 0x02 +#define TPS6105X_REG0_TORCHC_100 0x03 +#define TPS6105X_REG0_TORCHC_150 0x04 +#define TPS6105X_REG0_TORCHC_200 0x05 +#define TPS6105X_REG0_TORCHC_250_400 0x06 +#define TPS6105X_REG0_TORCHC_250_500 0x07 +#define TPS6105X_REG_1 0x01 +#define TPS6105X_REG1_MODE_SHIFT 6 +#define TPS6105X_REG1_MODE_MASK (0x03<<6) +#define TPS6105X_REG1_MODE_SHUTDOWN 0x00 +#define TPS6105X_REG1_MODE_TORCH 0x01 +#define TPS6105X_REG1_MODE_TORCH_FLASH 0x02 +#define TPS6105X_REG1_MODE_VOLTAGE 0x03 +#define TPS6105X_REG_2 0x02 +#define TPS6105X_REG_3 0x03 + +/** + * enum tps6105x_mode - desired mode for the TPS6105x + * @TPS6105X_MODE_SHUTDOWN: this instance is inactive, not used for anything + * @TPS61905X_MODE_TORCH: this instance is used as a LED, usually a while + * LED, for example as backlight or flashlight. If this is set, the + * TPS6105X will register to the LED framework + * @TPS6105X_MODE_TORCH_FLASH: this instance is used as a flashgun, usually + * in a camera + * @TPS6105X_MODE_VOLTAGE: this instance is used as a voltage regulator and + * will register to the regulator framework + */ +enum tps6105x_mode { + TPS6105X_MODE_SHUTDOWN, + TPS6105X_MODE_TORCH, + TPS6105X_MODE_TORCH_FLASH, + TPS6105X_MODE_VOLTAGE, +}; + +/** + * struct tps6105x_platform_data - TPS61905x platform data + * @mode: what mode this instance shall be operated in, + * this is not selectable at runtime + */ +struct tps6105x_platform_data { + enum tps6105x_mode mode; +}; + +/** + * struct tps6105x - state holder for the TPS6105x drivers + * @mutex: mutex to serialize I2C accesses + * @i2c_client: corresponding I2C client + */ +struct tps6105x { + struct tps6105x_platform_data *pdata; + struct mutex lock; + struct i2c_client *client; +}; + +extern int tps6105x_set(struct tps6105x *tps6105x, u8 reg, u8 value); +extern int tps6105x_get(struct tps6105x *tps6105x, u8 reg, u8 *buf); +extern int tps6105x_mask_and_set(struct tps6105x *tps6105x, u8 reg, + u8 bitmask, u8 bitvalues); + +#endif -- cgit v1.2.3 From 2edd3b692404efc2d3915175a2ed553e783de763 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Wed, 9 Mar 2011 12:02:55 +0000 Subject: regulator: Add a subdriver for TI TPS6105x regulator portions v2 This adds a subdriver for the regulator found inside the TPS61050 and TPS61052 chips. Cc: Samuel Ortiz Cc: Ola Lilja Cc: Jonas Aberg Signed-off-by: Linus Walleij Acked-by: Mark Brown Signed-off-by: Samuel Ortiz --- include/linux/mfd/tps6105x.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/tps6105x.h b/include/linux/mfd/tps6105x.h index f259244a56bd..386743dd931c 100644 --- a/include/linux/mfd/tps6105x.h +++ b/include/linux/mfd/tps6105x.h @@ -10,6 +10,7 @@ #define MFD_TPS6105X_H #include +#include /* * Register definitions to all subdrivers @@ -71,20 +72,25 @@ enum tps6105x_mode { * struct tps6105x_platform_data - TPS61905x platform data * @mode: what mode this instance shall be operated in, * this is not selectable at runtime + * @regulator_data: initialization data for the voltage + * regulator if used as a voltage source */ struct tps6105x_platform_data { enum tps6105x_mode mode; + struct regulator_init_data *regulator_data; }; /** * struct tps6105x - state holder for the TPS6105x drivers * @mutex: mutex to serialize I2C accesses * @i2c_client: corresponding I2C client + * @regulator: regulator device if used in voltage mode */ struct tps6105x { struct tps6105x_platform_data *pdata; struct mutex lock; struct i2c_client *client; + struct regulator_dev *regulator; }; extern int tps6105x_set(struct tps6105x *tps6105x, u8 reg, u8 value); -- cgit v1.2.3 From 07e73fbb2d52434e6b61019326f35040357e8efb Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Thu, 17 Mar 2011 21:42:30 +0000 Subject: mfd: Constify WM8994 write path Allow const buffers to be passed in without type safety issues. Signed-off-by: Mark Brown Signed-off-by: Samuel Ortiz --- include/linux/mfd/wm8994/core.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/wm8994/core.h b/include/linux/mfd/wm8994/core.h index cb7d3ae7da8f..f0b69cdae41c 100644 --- a/include/linux/mfd/wm8994/core.h +++ b/include/linux/mfd/wm8994/core.h @@ -59,7 +59,7 @@ struct wm8994 { int (*read_dev)(struct wm8994 *wm8994, unsigned short reg, int bytes, void *dest); int (*write_dev)(struct wm8994 *wm8994, unsigned short reg, - int bytes, void *src); + int bytes, const void *src); void *control_data; @@ -89,7 +89,7 @@ int wm8994_set_bits(struct wm8994 *wm8994, unsigned short reg, int wm8994_bulk_read(struct wm8994 *wm8994, unsigned short reg, int count, u16 *buf); int wm8994_bulk_write(struct wm8994 *wm8994, unsigned short reg, - int count, u16 *buf); + int count, const u16 *buf); /* Helper to save on boilerplate */ -- cgit v1.2.3 From 8bd4d7c4c500e88bff975bbcb7fe0d89da319cdd Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Tue, 15 Mar 2011 14:26:37 +0100 Subject: mfd: Rename ab8500 gpadc header Rename AB8500 GPADC header so as not to be redunantly named. Signed-off-by: Linus Walleij Signed-off-by: Samuel Ortiz --- include/linux/mfd/ab8500/ab8500-gpadc.h | 32 -------------------------------- include/linux/mfd/ab8500/gpadc.h | 32 ++++++++++++++++++++++++++++++++ 2 files changed, 32 insertions(+), 32 deletions(-) delete mode 100644 include/linux/mfd/ab8500/ab8500-gpadc.h create mode 100644 include/linux/mfd/ab8500/gpadc.h (limited to 'include/linux') diff --git a/include/linux/mfd/ab8500/ab8500-gpadc.h b/include/linux/mfd/ab8500/ab8500-gpadc.h deleted file mode 100644 index 46b954011f16..000000000000 --- a/include/linux/mfd/ab8500/ab8500-gpadc.h +++ /dev/null @@ -1,32 +0,0 @@ -/* - * Copyright (C) 2010 ST-Ericsson SA - * Licensed under GPLv2. - * - * Author: Arun R Murthy - * Author: Daniel Willerud - */ - -#ifndef _AB8500_GPADC_H -#define _AB8500_GPADC_H - -/* GPADC source: From datasheet(ADCSwSel[4:0] in GPADCCtrl2) */ -#define BAT_CTRL 0x01 -#define BTEMP_BALL 0x02 -#define MAIN_CHARGER_V 0x03 -#define ACC_DETECT1 0x04 -#define ACC_DETECT2 0x05 -#define ADC_AUX1 0x06 -#define ADC_AUX2 0x07 -#define MAIN_BAT_V 0x08 -#define VBUS_V 0x09 -#define MAIN_CHARGER_C 0x0A -#define USB_CHARGER_C 0x0B -#define BK_BAT_V 0x0C -#define DIE_TEMP 0x0D - -struct ab8500_gpadc; - -struct ab8500_gpadc *ab8500_gpadc_get(char *name); -int ab8500_gpadc_convert(struct ab8500_gpadc *gpadc, u8 input); - -#endif /* _AB8500_GPADC_H */ diff --git a/include/linux/mfd/ab8500/gpadc.h b/include/linux/mfd/ab8500/gpadc.h new file mode 100644 index 000000000000..46b954011f16 --- /dev/null +++ b/include/linux/mfd/ab8500/gpadc.h @@ -0,0 +1,32 @@ +/* + * Copyright (C) 2010 ST-Ericsson SA + * Licensed under GPLv2. + * + * Author: Arun R Murthy + * Author: Daniel Willerud + */ + +#ifndef _AB8500_GPADC_H +#define _AB8500_GPADC_H + +/* GPADC source: From datasheet(ADCSwSel[4:0] in GPADCCtrl2) */ +#define BAT_CTRL 0x01 +#define BTEMP_BALL 0x02 +#define MAIN_CHARGER_V 0x03 +#define ACC_DETECT1 0x04 +#define ACC_DETECT2 0x05 +#define ADC_AUX1 0x06 +#define ADC_AUX2 0x07 +#define MAIN_BAT_V 0x08 +#define VBUS_V 0x09 +#define MAIN_CHARGER_C 0x0A +#define USB_CHARGER_C 0x0B +#define BK_BAT_V 0x0C +#define DIE_TEMP 0x0D + +struct ab8500_gpadc; + +struct ab8500_gpadc *ab8500_gpadc_get(char *name); +int ab8500_gpadc_convert(struct ab8500_gpadc *gpadc, u8 input); + +#endif /* _AB8500_GPADC_H */ -- cgit v1.2.3 From e815f0a84fc9a98e5cc3ef0b520122e5e18520e7 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Jonathan=20Neusch=C3=A4fer?= Date: Mon, 21 Mar 2011 20:24:47 +0100 Subject: sched.h: Fix a typo ("its") MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The sentence uses the possessive pronoun, which is spelled without an apostrophe. Signed-off-by: Jonathan Neuschäfer Cc: Jiri Kosina Cc: Peter Zijlstra LKML-Reference: <1300735487-2406-1-git-send-email-j.neuschaefer@gmx.net> Signed-off-by: Ingo Molnar --- include/linux/sched.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index c15936fe998b..e89f1292c301 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -516,7 +516,7 @@ struct thread_group_cputimer { struct autogroup; /* - * NOTE! "signal_struct" does not have it's own + * NOTE! "signal_struct" does not have its own * locking, because a shared signal_struct always * implies a shared sighand_struct, so locking * sighand_struct is always a proper superset of -- cgit v1.2.3 From 04948c7f80b9446009c1c4791bb93e79729724fb Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Wed, 23 Mar 2011 08:24:58 +0100 Subject: smp: add missing init.h include Commit 34db18a054c6 ("smp: move smp setup functions to kernel/smp.c") causes this build error on s390 because of a missing init.h include: CC arch/s390/kernel/asm-offsets.s In file included from /home2/heicarst/linux-2.6/arch/s390/include/asm/spinlock.h:14:0, from include/linux/spinlock.h:87, from include/linux/seqlock.h:29, from include/linux/time.h:8, from include/linux/timex.h:56, from include/linux/sched.h:57, from arch/s390/kernel/asm-offsets.c:10: include/linux/smp.h:117:20: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'setup_nr_cpu_ids' include/linux/smp.h:118:20: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'smp_init' Fix it by adding the include statement. Signed-off-by: Heiko Carstens Acked-by: WANG Cong Signed-off-by: Linus Torvalds --- include/linux/smp.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/smp.h b/include/linux/smp.h index 48159dd320d0..74243c86ba39 100644 --- a/include/linux/smp.h +++ b/include/linux/smp.h @@ -10,6 +10,7 @@ #include #include #include +#include extern void cpu_idle(void); -- cgit v1.2.3 From 68cacd29167b1926d237bd1b153aa2a990201729 Mon Sep 17 00:00:00 2001 From: Stephane Eranian Date: Wed, 23 Mar 2011 16:03:06 +0100 Subject: perf_events: Fix stale ->cgrp pointer in update_cgrp_time_from_cpuctx() This patch solves a stale pointer problem in update_cgrp_time_from_cpuctx(). The cpuctx->cgrp was not cleared on all possible event exit paths, including: close() perf_release() perf_release_kernel() list_del_event() This patch fixes list_del_event() to clear cpuctx->cgrp when there are no cgroup events left in the context. [ This second version makes the code compile when CONFIG_CGROUP_PERF is not enabled. We unconditionally define perf_cpu_context->cgrp. ] Signed-off-by: Stephane Eranian Cc: peterz@infradead.org Cc: perfmon2-devel@lists.sf.net Cc: paulus@samba.org Cc: davem@davemloft.net LKML-Reference: <20110323150306.GA1580@quad> Signed-off-by: Ingo Molnar --- include/linux/perf_event.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index f495c0147240..311b4dc785a1 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -938,9 +938,7 @@ struct perf_cpu_context { struct list_head rotation_list; int jiffies_interval; struct pmu *active_pmu; -#ifdef CONFIG_CGROUP_PERF struct perf_cgroup *cgrp; -#endif }; struct perf_output_handle { -- cgit v1.2.3 From 480c2006ebb44ae03165695db7b3e38c04e0d102 Mon Sep 17 00:00:00 2001 From: Bryan Schumaker Date: Wed, 23 Mar 2011 14:48:29 -0400 Subject: NFS: Create nfs_open_dir_context nfs_opendir() created a context that held much more information than we need for a readdir. This patch introduces a slimmed-down nfs_open_dir_context that contains only the cookie and the cred used for RPC operations. The new context will eventually be used to help detect readdir loops. Signed-off-by: Bryan Schumaker Signed-off-by: Trond Myklebust --- include/linux/nfs_fs.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h index cb2add401f25..4b851a02f7f3 100644 --- a/include/linux/nfs_fs.h +++ b/include/linux/nfs_fs.h @@ -95,7 +95,10 @@ struct nfs_open_context { int error; struct list_head list; +}; +struct nfs_open_dir_context { + struct rpc_cred *cred; __u64 dir_cookie; }; -- cgit v1.2.3 From 8ef2ce3e16d9bec6cf015207c1c82a5b864046ac Mon Sep 17 00:00:00 2001 From: Bryan Schumaker Date: Wed, 23 Mar 2011 15:04:31 -0400 Subject: NFS: Detect loops in a readdir due to bad cookies Some filesystems (such as ext4) can return the same cookie value for multiple files. If we try to start a readdir with one of these cookies, the server will return the first file found with a cookie of the same value. This can cause the client to enter an infinite loop. Signed-off-by: Bryan Schumaker Signed-off-by: Trond Myklebust --- include/linux/nfs_fs.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h index 4b851a02f7f3..4179c368844b 100644 --- a/include/linux/nfs_fs.h +++ b/include/linux/nfs_fs.h @@ -100,6 +100,8 @@ struct nfs_open_context { struct nfs_open_dir_context { struct rpc_cred *cred; __u64 dir_cookie; + __u64 dup_cookie; + int duped; }; /* -- cgit v1.2.3 From 3b9038912828384e38d82409c281124631c8533b Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Wed, 23 Mar 2011 00:24:11 +0100 Subject: genirq; Remove the last leftovers of the old sparse irq code All users converted. Get rid of it. Signed-off-by: Thomas Gleixner --- include/linux/irqdesc.h | 7 ------- 1 file changed, 7 deletions(-) (limited to 'include/linux') diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h index 00218371518b..0b30662bc36c 100644 --- a/include/linux/irqdesc.h +++ b/include/linux/irqdesc.h @@ -100,13 +100,6 @@ struct irq_desc { extern struct irq_desc irq_desc[NR_IRQS]; #endif -/* Will be removed once the last users in power and sh are gone */ -extern struct irq_desc *irq_to_desc_alloc_node(unsigned int irq, int node); -static inline struct irq_desc *move_irq_desc(struct irq_desc *desc, int node) -{ - return desc; -} - #ifdef CONFIG_GENERIC_HARDIRQS static inline struct irq_data *irq_desc_get_irq_data(struct irq_desc *desc) -- cgit v1.2.3 From d3e17deb1790ee2123e9d11420be6411d1768b47 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Tue, 22 Mar 2011 17:08:15 +0100 Subject: genirq: Provide a lockdep helper Some irq chips need to call genirq functions for nested chips from their callbacks. That upsets lockdep. So they need to set a different lock class for those nested chips. Provide a helper function to avoid open access to irq_desc. Signed-off-by: Thomas Gleixner --- include/linux/irqdesc.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include/linux') diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h index 0b30662bc36c..1595f9176b43 100644 --- a/include/linux/irqdesc.h +++ b/include/linux/irqdesc.h @@ -191,6 +191,15 @@ static inline void __set_irq_handler_unlocked(int irq, desc->handle_irq = handler; } +static inline void +irq_set_lockdep_class(unsigned int irq, struct lock_class_key *class) +{ + struct irq_desc *desc = irq_to_desc(irq); + + if (desc) + lockdep_set_class(&desc->lock, class); +} + #ifdef CONFIG_IRQ_PREFLOW_FASTEOI static inline void __irq_set_preflow_handler(unsigned int irq, irq_preflow_handler_t handler) -- cgit v1.2.3 From a2e8461a2ce5e8140b7374eb68af0d09e36e07ff Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Wed, 23 Mar 2011 13:10:31 +0100 Subject: genirq: Provide locked setter for chip, handler, name Some irq_set_type() callbacks need to change the chip and the handler when the trigger mode changes. We have already a (misnomed) setter function for the handler which can be called from irq_set_type(). Provide one which allows to set chip and name as well. Put the misnomed function under the COMPAT switch and provide a replacement. Signed-off-by: Thomas Gleixner --- include/linux/irqdesc.h | 29 ++++++++++++++++++++++++----- 1 file changed, 24 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h index 1595f9176b43..15e6c3905f41 100644 --- a/include/linux/irqdesc.h +++ b/include/linux/irqdesc.h @@ -171,25 +171,44 @@ static inline int irq_has_action(unsigned int irq) return desc->action != NULL; } -#ifndef CONFIG_GENERIC_HARDIRQS_NO_COMPAT -static inline int irq_balancing_disabled(unsigned int irq) +/* caller has locked the irq_desc and both params are valid */ +static inline void __irq_set_handler_locked(unsigned int irq, + irq_flow_handler_t handler) { struct irq_desc *desc; desc = irq_to_desc(irq); - return desc->status & IRQ_NO_BALANCING_MASK; + desc->handle_irq = handler; } -#endif /* caller has locked the irq_desc and both params are valid */ +static inline void +__irq_set_chip_handler_name_locked(unsigned int irq, struct irq_chip *chip, + irq_flow_handler_t handler, const char *name) +{ + struct irq_desc *desc; + + desc = irq_to_desc(irq); + irq_desc_get_irq_data(desc)->chip = chip; + desc->handle_irq = handler; + desc->name = name; +} + +#ifndef CONFIG_GENERIC_HARDIRQS_NO_COMPAT static inline void __set_irq_handler_unlocked(int irq, irq_flow_handler_t handler) +{ + __irq_set_handler_locked(irq, handler); +} + +static inline int irq_balancing_disabled(unsigned int irq) { struct irq_desc *desc; desc = irq_to_desc(irq); - desc->handle_irq = handler; + return desc->status & IRQ_NO_BALANCING_MASK; } +#endif static inline void irq_set_lockdep_class(unsigned int irq, struct lock_class_key *class) -- cgit v1.2.3 From 0b7ca5a928e2271bbc225e9e1ac1f22e9fbee54f Mon Sep 17 00:00:00 2001 From: Yevgeny Petrilin Date: Tue, 22 Mar 2011 22:37:47 +0000 Subject: mlx4: Changing interrupt scheme Adding a pool of MSI-X vectors and EQs that can be used explicitly by mlx4_core customers (mlx4_ib, mlx4_en). The consumers will assign their own names to the interrupt vectors. Those vectors are not opened at mlx4 device initialization, opened by demand. Changed the max number of possible EQs according to the new scheme, no longer relies on on number of cores. The new functionality is exposed through mlx4_assign_eq() and mlx4_release_eq(). Customers that do not use the new API will get completion vectors as before. Signed-off-by: Markuze Alex Signed-off-by: Yevgeny Petrilin Signed-off-by: David S. Miller --- include/linux/mlx4/device.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h index 049214642036..78380823d827 100644 --- a/include/linux/mlx4/device.h +++ b/include/linux/mlx4/device.h @@ -39,6 +39,11 @@ #include +#define MAX_MSIX_P_PORT 17 +#define MAX_MSIX 64 +#define MSIX_LEGACY_SZ 4 +#define MIN_MSIX_P_PORT 5 + enum { MLX4_FLAG_MSI_X = 1 << 0, MLX4_FLAG_OLD_PORT_CMDS = 1 << 1, @@ -223,6 +228,7 @@ struct mlx4_caps { int num_eqs; int reserved_eqs; int num_comp_vectors; + int comp_pool; int num_mpts; int num_mtt_segs; int mtts_per_seg; @@ -526,5 +532,7 @@ void mlx4_fmr_unmap(struct mlx4_dev *dev, struct mlx4_fmr *fmr, int mlx4_fmr_free(struct mlx4_dev *dev, struct mlx4_fmr *fmr); int mlx4_SYNC_TPT(struct mlx4_dev *dev); int mlx4_test_interrupts(struct mlx4_dev *dev); +int mlx4_assign_eq(struct mlx4_dev *dev, char* name , int* vector); +void mlx4_release_eq(struct mlx4_dev *dev, int vec); #endif /* MLX4_DEVICE_H */ -- cgit v1.2.3 From 14c07b1358ede1664652bb9b28d9ace5fe6f7f92 Mon Sep 17 00:00:00 2001 From: Yevgeny Petrilin Date: Tue, 22 Mar 2011 22:37:59 +0000 Subject: mlx4: Wake on LAN support The driver queries the FW for WOL support. Ethtool get/set_wol is implemented accordingly. Only magic packets are supported at the time. Signed-off-by: Igor Yarovinsky Signed-off-by: Yevgeny Petrilin Signed-off-by: David S. Miller --- include/linux/mlx4/device.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h index 78380823d827..2460356d2c72 100644 --- a/include/linux/mlx4/device.h +++ b/include/linux/mlx4/device.h @@ -251,6 +251,7 @@ struct mlx4_caps { u16 stat_rate_support; int udp_rss; int loopback_support; + int wol; u8 port_width_cap[MLX4_MAX_PORTS + 1]; int max_gso_sz; int reserved_qps_cnt[MLX4_NUM_QP_REGION]; @@ -535,4 +536,7 @@ int mlx4_test_interrupts(struct mlx4_dev *dev); int mlx4_assign_eq(struct mlx4_dev *dev, char* name , int* vector); void mlx4_release_eq(struct mlx4_dev *dev, int vec); +int mlx4_wol_read(struct mlx4_dev *dev, u64 *config, int port); +int mlx4_wol_write(struct mlx4_dev *dev, u64 config, int port); + #endif /* MLX4_DEVICE_H */ -- cgit v1.2.3 From 725c89997e03d71b09ea3c17c997da0712b9d835 Mon Sep 17 00:00:00 2001 From: Yevgeny Petrilin Date: Tue, 22 Mar 2011 22:38:07 +0000 Subject: mlx4_en: Reporting HW revision in ethtool -i HW revision is derived from device ID and rev id. Signed-off-by: Eugenia Emantayev Signed-off-by: Yevgeny Petrilin Signed-off-by: David S. Miller --- include/linux/mlx4/device.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h index 2460356d2c72..fe2a3a3f046c 100644 --- a/include/linux/mlx4/device.h +++ b/include/linux/mlx4/device.h @@ -422,7 +422,7 @@ struct mlx4_dev { unsigned long flags; struct mlx4_caps caps; struct radix_tree_root qp_table_tree; - u32 rev_id; + u8 rev_id; char board_id[MLX4_BOARD_ID_LEN]; }; -- cgit v1.2.3 From 0345584e0b8be3735a950d17c7e463db20c6ce27 Mon Sep 17 00:00:00 2001 From: Yevgeny Petrilin Date: Tue, 22 Mar 2011 22:38:17 +0000 Subject: mlx4: generalization of multicast steering. The same packet steering mechanism would be used both for IB and Ethernet, Both multicasts and unicasts. This commit prepares the general infrastructure for this. Signed-off-by: Yevgeny Petrilin Signed-off-by: David S. Miller --- include/linux/mlx4/device.h | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h index fe2a3a3f046c..ebda939b9fc3 100644 --- a/include/linux/mlx4/device.h +++ b/include/linux/mlx4/device.h @@ -150,8 +150,10 @@ enum { }; enum mlx4_protocol { - MLX4_PROTOCOL_IB, - MLX4_PROTOCOL_EN, + MLX4_PROT_IB_IPV6 = 0, + MLX4_PROT_ETH, + MLX4_PROT_IB_IPV4, + MLX4_PROT_FCOE }; enum { @@ -178,6 +180,12 @@ enum mlx4_special_vlan_idx { MLX4_VLAN_REGULAR }; +enum mlx4_steer_type { + MLX4_MC_STEER = 0, + MLX4_UC_STEER, + MLX4_NUM_STEERS +}; + enum { MLX4_NUM_FEXCH = 64 * 1024, }; @@ -251,6 +259,8 @@ struct mlx4_caps { u16 stat_rate_support; int udp_rss; int loopback_support; + int vep_uc_steering; + int vep_mc_steering; int wol; u8 port_width_cap[MLX4_MAX_PORTS + 1]; int max_gso_sz; -- cgit v1.2.3 From 1679200f91da6a054b06954c9bd3eeed29b6731f Mon Sep 17 00:00:00 2001 From: Yevgeny Petrilin Date: Tue, 22 Mar 2011 22:38:31 +0000 Subject: mlx4_en: Enabling new steering The mlx4_en module now uses the new steering mechanism. The RX packets are now steered through the MCG table instead of Mac table for unicast, and default entry for multicast. The feature is enabled through INIT_HCA Signed-off-by: Yevgeny Petrilin Signed-off-by: David S. Miller --- include/linux/mlx4/device.h | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h index ebda939b9fc3..56fa5e1cd6d4 100644 --- a/include/linux/mlx4/device.h +++ b/include/linux/mlx4/device.h @@ -525,9 +525,15 @@ int mlx4_multicast_attach(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16], int block_mcast_loopback, enum mlx4_protocol protocol); int mlx4_multicast_detach(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16], enum mlx4_protocol protocol); - -int mlx4_register_mac(struct mlx4_dev *dev, u8 port, u64 mac, int *index); -void mlx4_unregister_mac(struct mlx4_dev *dev, u8 port, int index); +int mlx4_multicast_promisc_add(struct mlx4_dev *dev, u32 qpn, u8 port); +int mlx4_multicast_promisc_remove(struct mlx4_dev *dev, u32 qpn, u8 port); +int mlx4_unicast_promisc_add(struct mlx4_dev *dev, u32 qpn, u8 port); +int mlx4_unicast_promisc_remove(struct mlx4_dev *dev, u32 qpn, u8 port); +int mlx4_SET_MCAST_FLTR(struct mlx4_dev *dev, u8 port, u64 mac, u64 clear, u8 mode); + +int mlx4_register_mac(struct mlx4_dev *dev, u8 port, u64 mac, int *qpn, u8 wrap); +void mlx4_unregister_mac(struct mlx4_dev *dev, u8 port, int qpn); +int mlx4_replace_mac(struct mlx4_dev *dev, u8 port, int qpn, u64 new_mac, u8 wrap); int mlx4_find_cached_vlan(struct mlx4_dev *dev, u8 port, u16 vid, int *idx); int mlx4_register_vlan(struct mlx4_dev *dev, u8 port, u16 vlan, int *index); -- cgit v1.2.3 From c1b43dca137f2154845122417fba86d4bae67182 Mon Sep 17 00:00:00 2001 From: Eli Cohen Date: Tue, 22 Mar 2011 22:38:41 +0000 Subject: mlx4: Add blue flame support for kernel consumers Using blue flame can improve latency by allowing the HW to more efficiently access the WQE. This patch presents two functions that are used to allocate or release HW resources for using blue flame; the caller need to supply a struct mlx4_bf object when allocating resources. Consumers that make use of this API should post doorbells to the UAR object pointed by the initialized struct mlx4_bf; Signed-off-by: Eli Cohen Signed-off-by: David S. Miller --- include/linux/mlx4/device.h | 13 +++++++++++++ include/linux/mlx4/qp.h | 1 + 2 files changed, 14 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h index 56fa5e1cd6d4..8985768e2c0d 100644 --- a/include/linux/mlx4/device.h +++ b/include/linux/mlx4/device.h @@ -351,6 +351,17 @@ struct mlx4_fmr { struct mlx4_uar { unsigned long pfn; int index; + struct list_head bf_list; + unsigned free_bf_bmap; + void __iomem *map; + void __iomem *bf_map; +}; + +struct mlx4_bf { + unsigned long offset; + int buf_size; + struct mlx4_uar *uar; + void __iomem *reg; }; struct mlx4_cq { @@ -478,6 +489,8 @@ void mlx4_pd_free(struct mlx4_dev *dev, u32 pdn); int mlx4_uar_alloc(struct mlx4_dev *dev, struct mlx4_uar *uar); void mlx4_uar_free(struct mlx4_dev *dev, struct mlx4_uar *uar); +int mlx4_bf_alloc(struct mlx4_dev *dev, struct mlx4_bf *bf); +void mlx4_bf_free(struct mlx4_dev *dev, struct mlx4_bf *bf); int mlx4_mtt_init(struct mlx4_dev *dev, int npages, int page_shift, struct mlx4_mtt *mtt); diff --git a/include/linux/mlx4/qp.h b/include/linux/mlx4/qp.h index 0eeb2a1a867c..9e9eb21056ca 100644 --- a/include/linux/mlx4/qp.h +++ b/include/linux/mlx4/qp.h @@ -303,6 +303,7 @@ struct mlx4_wqe_data_seg { enum { MLX4_INLINE_ALIGN = 64, + MLX4_INLINE_SEG = 1 << 31, }; struct mlx4_wqe_inline_seg { -- cgit v1.2.3 From a861a1e1c398fe34701569fd8ac9225dfe0a9a7e Mon Sep 17 00:00:00 2001 From: Fred Isaman Date: Wed, 23 Mar 2011 13:27:51 +0000 Subject: NFSv4.1: add generic layer hooks for pnfs COMMIT We create three major hooks for the pnfs code. pnfs_mark_request_commit() is called during writeback_done from nfs_mark_request_commit, which gives the driver an opportunity to claim it wants control over commiting a particular req. pnfs_choose_commit_list() is called from nfs_scan_list to choose which list a given req should be added to, based on where we intend to send it for COMMIT. It is up to the driver to have preallocated list headers for each destination it may need. pnfs_commit_list() is how the driver actually takes control, it is used instead of nfs_commit_list(). In order to pass information between the above functions, we create a union in nfs_page to hold a lseg (which is possible because the req is not on any list while in transition), and add some flags to indicate if we need to use the pnfs code. Signed-off-by: Fred Isaman Signed-off-by: Trond Myklebust --- include/linux/nfs_fs.h | 1 + include/linux/nfs_page.h | 6 +++++- 2 files changed, 6 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h index 4179c368844b..eddda6ce7c42 100644 --- a/include/linux/nfs_fs.h +++ b/include/linux/nfs_fs.h @@ -226,6 +226,7 @@ struct nfs_inode { #define NFS_INO_FSCACHE (5) /* inode can be cached by FS-Cache */ #define NFS_INO_FSCACHE_LOCK (6) /* FS-Cache cookie management lock */ #define NFS_INO_COMMIT (7) /* inode is committing unstable writes */ +#define NFS_INO_PNFS_COMMIT (8) /* use pnfs code for commit */ static inline struct nfs_inode *NFS_I(const struct inode *inode) { diff --git a/include/linux/nfs_page.h b/include/linux/nfs_page.h index 92d54c81f51e..8023e4e25133 100644 --- a/include/linux/nfs_page.h +++ b/include/linux/nfs_page.h @@ -33,11 +33,15 @@ enum { PG_CLEAN, PG_NEED_COMMIT, PG_NEED_RESCHED, + PG_PNFS_COMMIT, }; struct nfs_inode; struct nfs_page { - struct list_head wb_list; /* Defines state of page: */ + union { + struct list_head wb_list; /* Defines state of page: */ + struct pnfs_layout_segment *wb_commit_lseg; /* Used when PG_PNFS_COMMIT set */ + }; struct page *wb_page; /* page to read in/write out */ struct nfs_open_context *wb_context; /* File state context info */ struct nfs_lock_context *wb_lock_context; /* lock context info */ -- cgit v1.2.3 From e0c2b3801828aadb65dec9f67f7c6b7a675ad007 Mon Sep 17 00:00:00 2001 From: Fred Isaman Date: Wed, 23 Mar 2011 13:27:53 +0000 Subject: NFSv4.1: filelayout driver specific code for COMMIT Implement all the hooks created in the previous patches. This requires exporting quite a few functions and adding a few structure fields. Signed-off-by: Fred Isaman Signed-off-by: Trond Myklebust --- include/linux/nfs_fs.h | 1 + include/linux/nfs_xdr.h | 1 + 2 files changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h index eddda6ce7c42..807e07c86b26 100644 --- a/include/linux/nfs_fs.h +++ b/include/linux/nfs_fs.h @@ -198,6 +198,7 @@ struct nfs_inode { /* pNFS layout information */ struct pnfs_layout_hdr *layout; + atomic_t commits_outstanding; #endif /* CONFIG_NFS_V4*/ #ifdef CONFIG_NFS_FSCACHE struct fscache_cookie *fscache; diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 2c2c67d2eb42..ac0c0e51786e 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -1040,6 +1040,7 @@ struct nfs_write_data { struct nfs_writeres res; /* result struct */ struct pnfs_layout_segment *lseg; struct nfs_client *ds_clp; /* pNFS data server */ + int ds_commit_index; const struct rpc_call_ops *mds_ops; int (*write_done_cb) (struct rpc_task *task, struct nfs_write_data *data); #ifdef CONFIG_NFS_V4 -- cgit v1.2.3 From 863a3c6c686d5773f7192a4818769e15db12ce08 Mon Sep 17 00:00:00 2001 From: Andy Adamson Date: Wed, 23 Mar 2011 13:27:54 +0000 Subject: NFSv4.1: layoutcommit The filelayout driver sends LAYOUTCOMMIT only when COMMIT goes to the data server (as opposed to the MDS) and the data server WRITE is not NFS_FILE_SYNC. Only whole file layout support means that there is only one IOMODE_RW layout segment. Signed-off-by: Andy Adamson Signed-off-by: Alexandros Batsakis Signed-off-by: Boaz Harrosh Signed-off-by: Dean Hildebrand Signed-off-by: Fred Isaman Signed-off-by: Mingyang Guo Signed-off-by: Tao Guo Signed-off-by: Zhang Jingwang Tested-by: Boaz Harrosh Signed-off-by: Benny Halevy Signed-off-by: Fred Isaman Signed-off-by: Trond Myklebust --- include/linux/nfs4.h | 1 + include/linux/nfs_fs.h | 1 + include/linux/nfs_xdr.h | 23 +++++++++++++++++++++++ 3 files changed, 25 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nfs4.h b/include/linux/nfs4.h index 134716e5e350..bf22cfaaeee5 100644 --- a/include/linux/nfs4.h +++ b/include/linux/nfs4.h @@ -560,6 +560,7 @@ enum { NFSPROC4_CLNT_RECLAIM_COMPLETE, NFSPROC4_CLNT_LAYOUTGET, NFSPROC4_CLNT_GETDEVICEINFO, + NFSPROC4_CLNT_LAYOUTCOMMIT, }; /* nfs41 types */ diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h index 807e07c86b26..1b93b9c60e55 100644 --- a/include/linux/nfs_fs.h +++ b/include/linux/nfs_fs.h @@ -228,6 +228,7 @@ struct nfs_inode { #define NFS_INO_FSCACHE_LOCK (6) /* FS-Cache cookie management lock */ #define NFS_INO_COMMIT (7) /* inode is committing unstable writes */ #define NFS_INO_PNFS_COMMIT (8) /* use pnfs code for commit */ +#define NFS_INO_LAYOUTCOMMIT (9) /* layoutcommit required */ static inline struct nfs_inode *NFS_I(const struct inode *inode) { diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index ac0c0e51786e..84f3585c5728 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -236,6 +236,29 @@ struct nfs4_getdeviceinfo_res { struct nfs4_sequence_res seq_res; }; +struct nfs4_layoutcommit_args { + nfs4_stateid stateid; + __u64 lastbytewritten; + struct inode *inode; + const u32 *bitmask; + struct nfs4_sequence_args seq_args; +}; + +struct nfs4_layoutcommit_res { + struct nfs_fattr *fattr; + const struct nfs_server *server; + struct nfs4_sequence_res seq_res; +}; + +struct nfs4_layoutcommit_data { + struct rpc_task task; + struct nfs_fattr fattr; + struct pnfs_layout_segment *lseg; + struct rpc_cred *cred; + struct nfs4_layoutcommit_args args; + struct nfs4_layoutcommit_res res; +}; + /* * Arguments to the open call. */ -- cgit v1.2.3 From 31db58b3ab432f72ea76be58b12e6ffaf627d5db Mon Sep 17 00:00:00 2001 From: Stephen Wilson Date: Sun, 13 Mar 2011 15:49:15 -0400 Subject: mm: arch: make get_gate_vma take an mm_struct instead of a task_struct Morally, the presence of a gate vma is more an attribute of a particular mm than a particular task. Moreover, dropping the dependency on task_struct will help make both existing and future operations on mm's more flexible and convenient. Signed-off-by: Stephen Wilson Reviewed-by: Michel Lespinasse Cc: Thomas Gleixner Cc: Ingo Molnar Cc: "H. Peter Anvin" Signed-off-by: Al Viro --- include/linux/mm.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index 581703d86fbd..18b4a6358ab4 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1578,7 +1578,7 @@ static inline bool kernel_page_present(struct page *page) { return true; } #endif /* CONFIG_HIBERNATION */ #endif -extern struct vm_area_struct *get_gate_vma(struct task_struct *tsk); +extern struct vm_area_struct *get_gate_vma(struct mm_struct *mm); #ifdef __HAVE_ARCH_GATE_AREA int in_gate_area_no_task(unsigned long addr); int in_gate_area(struct task_struct *task, unsigned long addr); -- cgit v1.2.3 From 83b964bbf82eb13a8f31bb49ca420787fe01f7a6 Mon Sep 17 00:00:00 2001 From: Stephen Wilson Date: Sun, 13 Mar 2011 15:49:16 -0400 Subject: mm: arch: make in_gate_area take an mm_struct instead of a task_struct Morally, the question of whether an address lies in a gate vma should be asked with respect to an mm, not a particular task. Moreover, dropping the dependency on task_struct will help make existing and future operations on mm's more flexible and convenient. Signed-off-by: Stephen Wilson Reviewed-by: Michel Lespinasse Cc: Thomas Gleixner Cc: Ingo Molnar Cc: "H. Peter Anvin" Signed-off-by: Al Viro --- include/linux/mm.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index 18b4a6358ab4..5c6d916cd302 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1581,10 +1581,10 @@ static inline bool kernel_page_present(struct page *page) { return true; } extern struct vm_area_struct *get_gate_vma(struct mm_struct *mm); #ifdef __HAVE_ARCH_GATE_AREA int in_gate_area_no_task(unsigned long addr); -int in_gate_area(struct task_struct *task, unsigned long addr); +int in_gate_area(struct mm_struct *mm, unsigned long addr); #else int in_gate_area_no_task(unsigned long addr); -#define in_gate_area(task, addr) ({(void)task; in_gate_area_no_task(addr);}) +#define in_gate_area(mm, addr) ({(void)mm; in_gate_area_no_task(addr);}) #endif /* __HAVE_ARCH_GATE_AREA */ int drop_caches_sysctl_handler(struct ctl_table *, int, -- cgit v1.2.3 From cae5d39032acf26c265f6b1dc73d7ce6ff4bc387 Mon Sep 17 00:00:00 2001 From: Stephen Wilson Date: Sun, 13 Mar 2011 15:49:17 -0400 Subject: mm: arch: rename in_gate_area_no_task to in_gate_area_no_mm Now that gate vma's are referenced with respect to a particular mm and not a particular task it only makes sense to propagate the change to this predicate as well. Signed-off-by: Stephen Wilson Reviewed-by: Michel Lespinasse Cc: Thomas Gleixner Cc: Ingo Molnar Cc: "H. Peter Anvin" Signed-off-by: Al Viro --- include/linux/mm.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index 5c6d916cd302..9d6efefdde50 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1580,11 +1580,11 @@ static inline bool kernel_page_present(struct page *page) { return true; } extern struct vm_area_struct *get_gate_vma(struct mm_struct *mm); #ifdef __HAVE_ARCH_GATE_AREA -int in_gate_area_no_task(unsigned long addr); +int in_gate_area_no_mm(unsigned long addr); int in_gate_area(struct mm_struct *mm, unsigned long addr); #else -int in_gate_area_no_task(unsigned long addr); -#define in_gate_area(mm, addr) ({(void)mm; in_gate_area_no_task(addr);}) +int in_gate_area_no_mm(unsigned long addr); +#define in_gate_area(mm, addr) ({(void)mm; in_gate_area_no_mm(addr);}) #endif /* __HAVE_ARCH_GATE_AREA */ int drop_caches_sysctl_handler(struct ctl_table *, int, -- cgit v1.2.3 From 5ddd36b9c59887c6416e21daf984fbdd9b1818df Mon Sep 17 00:00:00 2001 From: Stephen Wilson Date: Sun, 13 Mar 2011 15:49:20 -0400 Subject: mm: implement access_remote_vm Provide an alternative to access_process_vm that allows the caller to obtain a reference to the supplied mm_struct. Signed-off-by: Stephen Wilson Signed-off-by: Al Viro --- include/linux/mm.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index 9d6efefdde50..60011d26bffc 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -971,6 +971,8 @@ static inline int handle_mm_fault(struct mm_struct *mm, extern int make_pages_present(unsigned long addr, unsigned long end); extern int access_process_vm(struct task_struct *tsk, unsigned long addr, void *buf, int len, int write); +extern int access_remote_vm(struct mm_struct *mm, unsigned long addr, + void *buf, int len, int write); int __get_user_pages(struct task_struct *tsk, struct mm_struct *mm, unsigned long start, int len, unsigned int foll_flags, -- cgit v1.2.3 From 1eed4c077c31450bfcd0249aebb21d96fc5d5d3c Mon Sep 17 00:00:00 2001 From: Grant Likely Date: Fri, 18 Mar 2011 10:21:29 -0600 Subject: dt: eliminate OF_NO_DEEP_PROBE and test for NULL match table There are no users of OF_NO_DEEP_PROBE, and of_match_node() now gracefully handles being passed a NULL pointer, so the checks at the top of of_platform_bus_probe can be dropped. While at it, consolidate the root node pointer check to be easier to read and tidy up related comments. Signed-off-by: Grant Likely --- include/linux/of_platform.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/of_platform.h b/include/linux/of_platform.h index 17c7e21c0bd7..fb51ae38cea7 100644 --- a/include/linux/of_platform.h +++ b/include/linux/of_platform.h @@ -52,9 +52,6 @@ extern struct platform_device *of_platform_device_create(struct device_node *np, const char *bus_id, struct device *parent); -/* pseudo "matches" value to not do deep probe */ -#define OF_NO_DEEP_PROBE ((struct of_device_id *)-1) - extern int of_platform_bus_probe(struct device_node *root, const struct of_device_id *matches, struct device *parent); -- cgit v1.2.3 From d47d81c0e9abdc3c88653fabff5beae82c949b09 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Wed, 23 Mar 2011 22:16:41 +0100 Subject: Introduce ARCH_NO_SYSDEV_OPS config option (v2) Introduce Kconfig option allowing architectures where sysdev operations used during system suspend, resume and shutdown have been completely replaced with struct sycore_ops operations to avoid building sysdev code that will never be used. Make callbacks in struct sys_device and struct sysdev_driver depend on ARCH_NO_SYSDEV_OPS to allows us to verify if all of the references have been actually removed from the code the given architecture depends on. Make x86 select ARCH_NO_SYSDEV_OPS. Signed-off-by: Rafael J. Wysocki --- include/linux/device.h | 4 ++++ include/linux/pm.h | 10 ++++++++-- include/linux/sysdev.h | 7 +++++-- 3 files changed, 17 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/device.h b/include/linux/device.h index 144ec135875f..ab8dfc095709 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -633,8 +633,12 @@ static inline int devtmpfs_mount(const char *mountpoint) { return 0; } /* drivers/base/power/shutdown.c */ extern void device_shutdown(void); +#ifndef CONFIG_ARCH_NO_SYSDEV_OPS /* drivers/base/sys.c */ extern void sysdev_shutdown(void); +#else +static inline void sysdev_shutdown(void) { } +#endif /* debugging and troubleshooting/diagnostic helpers. */ extern const char *dev_driver_string(const struct device *dev); diff --git a/include/linux/pm.h b/include/linux/pm.h index 6618216bb973..512e09177e57 100644 --- a/include/linux/pm.h +++ b/include/linux/pm.h @@ -529,13 +529,19 @@ struct dev_power_domain { */ #ifdef CONFIG_PM_SLEEP -extern void device_pm_lock(void); +#ifndef CONFIG_ARCH_NO_SYSDEV_OPS +extern int sysdev_suspend(pm_message_t state); extern int sysdev_resume(void); +#else +static inline int sysdev_suspend(pm_message_t state) { return 0; } +static inline int sysdev_resume(void) { return 0; } +#endif + +extern void device_pm_lock(void); extern void dpm_resume_noirq(pm_message_t state); extern void dpm_resume_end(pm_message_t state); extern void device_pm_unlock(void); -extern int sysdev_suspend(pm_message_t state); extern int dpm_suspend_noirq(pm_message_t state); extern int dpm_suspend_start(pm_message_t state); diff --git a/include/linux/sysdev.h b/include/linux/sysdev.h index 1154c29f4101..8a75da551e4e 100644 --- a/include/linux/sysdev.h +++ b/include/linux/sysdev.h @@ -33,12 +33,13 @@ struct sysdev_class { const char *name; struct list_head drivers; struct sysdev_class_attribute **attrs; - + struct kset kset; +#ifndef CONFIG_ARCH_NO_SYSDEV_OPS /* Default operations for these types of devices */ int (*shutdown)(struct sys_device *); int (*suspend)(struct sys_device *, pm_message_t state); int (*resume)(struct sys_device *); - struct kset kset; +#endif }; struct sysdev_class_attribute { @@ -76,9 +77,11 @@ struct sysdev_driver { struct list_head entry; int (*add)(struct sys_device *); int (*remove)(struct sys_device *); +#ifndef CONFIG_ARCH_NO_SYSDEV_OPS int (*shutdown)(struct sys_device *); int (*suspend)(struct sys_device *, pm_message_t state); int (*resume)(struct sys_device *); +#endif }; -- cgit v1.2.3 From 0795ccea24714c790187e3d4f23c8e5be515f42d Mon Sep 17 00:00:00 2001 From: Akinobu Mita Date: Wed, 23 Mar 2011 16:42:06 -0700 Subject: ext3: use little-endian bitops As a preparation for removing ext2 non-atomic bit operations from asm/bitops.h. This converts ext2 non-atomic bit operations to little-endian bit operations. Signed-off-by: Akinobu Mita Acked-by: Jan Kara Cc: Andreas Dilger Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/ext3_fs.h | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ext3_fs.h b/include/linux/ext3_fs.h index 6043c64c207a..85c1d302c12e 100644 --- a/include/linux/ext3_fs.h +++ b/include/linux/ext3_fs.h @@ -418,13 +418,13 @@ struct ext3_inode { #define EXT2_MOUNT_DATA_FLAGS EXT3_MOUNT_DATA_FLAGS #endif -#define ext3_set_bit ext2_set_bit +#define ext3_set_bit __test_and_set_bit_le #define ext3_set_bit_atomic ext2_set_bit_atomic -#define ext3_clear_bit ext2_clear_bit +#define ext3_clear_bit __test_and_clear_bit_le #define ext3_clear_bit_atomic ext2_clear_bit_atomic -#define ext3_test_bit ext2_test_bit -#define ext3_find_first_zero_bit ext2_find_first_zero_bit -#define ext3_find_next_zero_bit ext2_find_next_zero_bit +#define ext3_test_bit test_bit_le +#define ext3_find_first_zero_bit find_first_zero_bit_le +#define ext3_find_next_zero_bit find_next_zero_bit_le /* * Maximal mount counts between two filesystem checks -- cgit v1.2.3 From b9b9144a5336f0d85428e2870e1010641f27b3f4 Mon Sep 17 00:00:00 2001 From: Akinobu Mita Date: Wed, 23 Mar 2011 16:42:10 -0700 Subject: reiserfs: use little-endian bitops As a preparation for removing ext2 non-atomic bit operations from asm/bitops.h. This converts ext2 non-atomic bit operations to little-endian bit operations. Signed-off-by: Akinobu Mita Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/reiserfs_fs.h | 27 +++++++++++++-------------- 1 file changed, 13 insertions(+), 14 deletions(-) (limited to 'include/linux') diff --git a/include/linux/reiserfs_fs.h b/include/linux/reiserfs_fs.h index c21072adbfad..0a3842aacba9 100644 --- a/include/linux/reiserfs_fs.h +++ b/include/linux/reiserfs_fs.h @@ -1124,15 +1124,18 @@ struct reiserfs_de_head { # define aligned_address(addr) ((void *)((long)(addr) & ~((1UL << ADDR_UNALIGNED_BITS) - 1))) # define unaligned_offset(addr) (((int)((long)(addr) & ((1 << ADDR_UNALIGNED_BITS) - 1))) << 3) -# define set_bit_unaligned(nr, addr) ext2_set_bit((nr) + unaligned_offset(addr), aligned_address(addr)) -# define clear_bit_unaligned(nr, addr) ext2_clear_bit((nr) + unaligned_offset(addr), aligned_address(addr)) -# define test_bit_unaligned(nr, addr) ext2_test_bit((nr) + unaligned_offset(addr), aligned_address(addr)) +# define set_bit_unaligned(nr, addr) \ + __test_and_set_bit_le((nr) + unaligned_offset(addr), aligned_address(addr)) +# define clear_bit_unaligned(nr, addr) \ + __test_and_clear_bit_le((nr) + unaligned_offset(addr), aligned_address(addr)) +# define test_bit_unaligned(nr, addr) \ + test_bit_le((nr) + unaligned_offset(addr), aligned_address(addr)) #else -# define set_bit_unaligned(nr, addr) ext2_set_bit(nr, addr) -# define clear_bit_unaligned(nr, addr) ext2_clear_bit(nr, addr) -# define test_bit_unaligned(nr, addr) ext2_test_bit(nr, addr) +# define set_bit_unaligned(nr, addr) __test_and_set_bit_le(nr, addr) +# define clear_bit_unaligned(nr, addr) __test_and_clear_bit_le(nr, addr) +# define test_bit_unaligned(nr, addr) test_bit_le(nr, addr) #endif @@ -2329,14 +2332,10 @@ __u32 keyed_hash(const signed char *msg, int len); __u32 yura_hash(const signed char *msg, int len); __u32 r5_hash(const signed char *msg, int len); -/* the ext2 bit routines adjust for big or little endian as -** appropriate for the arch, so in our laziness we use them rather -** than using the bit routines they call more directly. These -** routines must be used when changing on disk bitmaps. */ -#define reiserfs_test_and_set_le_bit ext2_set_bit -#define reiserfs_test_and_clear_le_bit ext2_clear_bit -#define reiserfs_test_le_bit ext2_test_bit -#define reiserfs_find_next_zero_le_bit ext2_find_next_zero_bit +#define reiserfs_test_and_set_le_bit __test_and_set_bit_le +#define reiserfs_test_and_clear_le_bit __test_and_clear_bit_le +#define reiserfs_test_le_bit test_bit_le +#define reiserfs_find_next_zero_le_bit find_next_zero_bit_le /* sometimes reiserfs_truncate may require to allocate few new blocks to perform indirect2direct conversion. People probably used to -- cgit v1.2.3 From b7c6167848fa36e32f1874b95c1edc02881cd040 Mon Sep 17 00:00:00 2001 From: Johannes Weiner Date: Wed, 23 Mar 2011 16:42:20 -0700 Subject: memcg: soft limit reclaim should end at limit not below Soft limit reclaim continues until the usage is below the current soft limit, but the documented semantics are actually that soft limit reclaim will push usage back until the soft limits are met again. Signed-off-by: Johannes Weiner Acked-by: KAMEZAWA Hiroyuki Cc: Daisuke Nishimura Acked-by: Balbir Singh Cc: Minchan Kim Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/res_counter.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/res_counter.h b/include/linux/res_counter.h index a5930cb66145..bf1f01bc013f 100644 --- a/include/linux/res_counter.h +++ b/include/linux/res_counter.h @@ -139,7 +139,7 @@ static inline bool res_counter_limit_check_locked(struct res_counter *cnt) static inline bool res_counter_soft_limit_check_locked(struct res_counter *cnt) { - if (cnt->usage < cnt->soft_limit) + if (cnt->usage <= cnt->soft_limit) return true; return false; @@ -202,7 +202,7 @@ static inline bool res_counter_check_margin(struct res_counter *cnt, return ret; } -static inline bool res_counter_check_under_soft_limit(struct res_counter *cnt) +static inline bool res_counter_check_within_soft_limit(struct res_counter *cnt) { bool ret; unsigned long flags; -- cgit v1.2.3 From 9d11ea9f163a14920487bdda77461e64d600fd48 Mon Sep 17 00:00:00 2001 From: Johannes Weiner Date: Wed, 23 Mar 2011 16:42:21 -0700 Subject: memcg: simplify the way memory limits are checked Since transparent huge pages, checking whether memory cgroups are below their limits is no longer enough, but the actual amount of chargeable space is important. To not have more than one limit-checking interface, replace memory_cgroup_check_under_limit() and memory_cgroup_check_margin() with a single memory_cgroup_margin() that returns the chargeable space and leaves the comparison to the callsite. Soft limits are now checked the other way round, by using the already existing function that returns the amount by which soft limits are exceeded: res_counter_soft_limit_excess(). Also remove all the corresponding functions on the res_counter side that are now no longer used. Signed-off-by: Johannes Weiner Acked-by: KAMEZAWA Hiroyuki Cc: Daisuke Nishimura Acked-by: Balbir Singh Cc: Minchan Kim Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/res_counter.h | 72 +++++++++------------------------------------ 1 file changed, 14 insertions(+), 58 deletions(-) (limited to 'include/linux') diff --git a/include/linux/res_counter.h b/include/linux/res_counter.h index bf1f01bc013f..c9d625ca659e 100644 --- a/include/linux/res_counter.h +++ b/include/linux/res_counter.h @@ -129,20 +129,22 @@ int __must_check res_counter_charge(struct res_counter *counter, void res_counter_uncharge_locked(struct res_counter *counter, unsigned long val); void res_counter_uncharge(struct res_counter *counter, unsigned long val); -static inline bool res_counter_limit_check_locked(struct res_counter *cnt) -{ - if (cnt->usage < cnt->limit) - return true; - - return false; -} - -static inline bool res_counter_soft_limit_check_locked(struct res_counter *cnt) +/** + * res_counter_margin - calculate chargeable space of a counter + * @cnt: the counter + * + * Returns the difference between the hard limit and the current usage + * of resource counter @cnt. + */ +static inline unsigned long long res_counter_margin(struct res_counter *cnt) { - if (cnt->usage <= cnt->soft_limit) - return true; + unsigned long long margin; + unsigned long flags; - return false; + spin_lock_irqsave(&cnt->lock, flags); + margin = cnt->limit - cnt->usage; + spin_unlock_irqrestore(&cnt->lock, flags); + return margin; } /** @@ -167,52 +169,6 @@ res_counter_soft_limit_excess(struct res_counter *cnt) return excess; } -/* - * Helper function to detect if the cgroup is within it's limit or - * not. It's currently called from cgroup_rss_prepare() - */ -static inline bool res_counter_check_under_limit(struct res_counter *cnt) -{ - bool ret; - unsigned long flags; - - spin_lock_irqsave(&cnt->lock, flags); - ret = res_counter_limit_check_locked(cnt); - spin_unlock_irqrestore(&cnt->lock, flags); - return ret; -} - -/** - * res_counter_check_margin - check if the counter allows charging - * @cnt: the resource counter to check - * @bytes: the number of bytes to check the remaining space against - * - * Returns a boolean value on whether the counter can be charged - * @bytes or whether this would exceed the limit. - */ -static inline bool res_counter_check_margin(struct res_counter *cnt, - unsigned long bytes) -{ - bool ret; - unsigned long flags; - - spin_lock_irqsave(&cnt->lock, flags); - ret = cnt->limit - cnt->usage >= bytes; - spin_unlock_irqrestore(&cnt->lock, flags); - return ret; -} - -static inline bool res_counter_check_within_soft_limit(struct res_counter *cnt) -{ - bool ret; - unsigned long flags; - - spin_lock_irqsave(&cnt->lock, flags); - ret = res_counter_soft_limit_check_locked(cnt); - spin_unlock_irqrestore(&cnt->lock, flags); - return ret; -} - static inline void res_counter_reset_max(struct res_counter *cnt) { unsigned long flags; -- cgit v1.2.3 From f212ad7cf9c73f8a7fa160e223dcb3f074441a72 Mon Sep 17 00:00:00 2001 From: Daisuke Nishimura Date: Wed, 23 Mar 2011 16:42:25 -0700 Subject: memcg: add memcg sanity checks at allocating and freeing pages Add checks at allocating or freeing a page whether the page is used (iow, charged) from the view point of memcg. This check may be useful in debugging a problem and we did similar checks before the commit 52d4b9ac(memcg: allocate all page_cgroup at boot). This patch adds some overheads at allocating or freeing memory, so it's enabled only when CONFIG_DEBUG_VM is enabled. Signed-off-by: Daisuke Nishimura Signed-off-by: Johannes Weiner Acked-by: KAMEZAWA Hiroyuki Cc: Balbir Singh Cc: Minchan Kim Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/memcontrol.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'include/linux') diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 5bb7be2628ca..5a5ce7055839 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -151,6 +151,10 @@ u64 mem_cgroup_get_limit(struct mem_cgroup *mem); void mem_cgroup_split_huge_fixup(struct page *head, struct page *tail); #endif +#ifdef CONFIG_DEBUG_VM +bool mem_cgroup_bad_page_check(struct page *page); +void mem_cgroup_print_bad_page(struct page *page); +#endif #else /* CONFIG_CGROUP_MEM_RES_CTLR */ struct mem_cgroup; @@ -352,5 +356,18 @@ static inline void mem_cgroup_split_huge_fixup(struct page *head, #endif /* CONFIG_CGROUP_MEM_CONT */ +#if !defined(CONFIG_CGROUP_MEM_RES_CTLR) || !defined(CONFIG_DEBUG_VM) +static inline bool +mem_cgroup_bad_page_check(struct page *page) +{ + return false; +} + +static inline void +mem_cgroup_print_bad_page(struct page *page) +{ +} +#endif + #endif /* _LINUX_MEMCONTROL_H */ -- cgit v1.2.3 From 97a6c37b34f46feed2544bd40891ee6dd0fd1554 Mon Sep 17 00:00:00 2001 From: Johannes Weiner Date: Wed, 23 Mar 2011 16:42:27 -0700 Subject: memcg: change page_cgroup_zoneinfo signature Instead of passing a whole struct page_cgroup to this function, let it take only what it really needs from it: the struct mem_cgroup and the page. This has the advantage that reading pc->mem_cgroup is now done at the same place where the ordering rules for this pointer are enforced and explained. It is also in preparation for removing the pc->page backpointer. Signed-off-by: Johannes Weiner Acked-by: KAMEZAWA Hiroyuki Cc: Daisuke Nishimura Cc: Balbir Singh Cc: Minchan Kim Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/page_cgroup.h | 10 ---------- 1 file changed, 10 deletions(-) (limited to 'include/linux') diff --git a/include/linux/page_cgroup.h b/include/linux/page_cgroup.h index 6d6cb7a57bb3..363bbc8b0f49 100644 --- a/include/linux/page_cgroup.h +++ b/include/linux/page_cgroup.h @@ -85,16 +85,6 @@ SETPCGFLAG(Migration, MIGRATION) CLEARPCGFLAG(Migration, MIGRATION) TESTPCGFLAG(Migration, MIGRATION) -static inline int page_cgroup_nid(struct page_cgroup *pc) -{ - return page_to_nid(pc->page); -} - -static inline enum zone_type page_cgroup_zid(struct page_cgroup *pc) -{ - return page_zonenum(pc->page); -} - static inline void lock_page_cgroup(struct page_cgroup *pc) { /* -- cgit v1.2.3 From de3638d9cdc89ac899225996b8dcedbcbc53bdd2 Mon Sep 17 00:00:00 2001 From: Johannes Weiner Date: Wed, 23 Mar 2011 16:42:28 -0700 Subject: memcg: fold __mem_cgroup_move_account into caller It is one logical function, no need to have it split up. Also, get rid of some checks from the inner function that ensured the sanity of the outer function. Signed-off-by: Johannes Weiner Acked-by: KAMEZAWA Hiroyuki Acked-by: Daisuke Nishimura Cc: Balbir Singh Cc: Minchan Kim Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/page_cgroup.h | 5 ----- 1 file changed, 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/page_cgroup.h b/include/linux/page_cgroup.h index 363bbc8b0f49..6b63679ce8a1 100644 --- a/include/linux/page_cgroup.h +++ b/include/linux/page_cgroup.h @@ -99,11 +99,6 @@ static inline void unlock_page_cgroup(struct page_cgroup *pc) bit_spin_unlock(PCG_LOCK, &pc->flags); } -static inline int page_is_cgroup_locked(struct page_cgroup *pc) -{ - return bit_spin_is_locked(PCG_LOCK, &pc->flags); -} - static inline void move_lock_page_cgroup(struct page_cgroup *pc, unsigned long *flags) { -- cgit v1.2.3 From 6b3ae58efca06623c197fd6d91ded4aa3a8fe039 Mon Sep 17 00:00:00 2001 From: Johannes Weiner Date: Wed, 23 Mar 2011 16:42:30 -0700 Subject: memcg: remove direct page_cgroup-to-page pointer In struct page_cgroup, we have a full word for flags but only a few are reserved. Use the remaining upper bits to encode, depending on configuration, the node or the section, to enable page_cgroup-to-page lookups without a direct pointer. This saves a full word for every page in a system with memory cgroups enabled. Signed-off-by: Johannes Weiner Acked-by: KAMEZAWA Hiroyuki Cc: Daisuke Nishimura Cc: Balbir Singh Cc: Minchan Kim Cc: Randy Dunlap Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/page_cgroup.h | 75 +++++++++++++++++++++++++++++++++++---------- 1 file changed, 58 insertions(+), 17 deletions(-) (limited to 'include/linux') diff --git a/include/linux/page_cgroup.h b/include/linux/page_cgroup.h index 6b63679ce8a1..f5de21de31dd 100644 --- a/include/linux/page_cgroup.h +++ b/include/linux/page_cgroup.h @@ -1,8 +1,26 @@ #ifndef __LINUX_PAGE_CGROUP_H #define __LINUX_PAGE_CGROUP_H +enum { + /* flags for mem_cgroup */ + PCG_LOCK, /* Lock for pc->mem_cgroup and following bits. */ + PCG_CACHE, /* charged as cache */ + PCG_USED, /* this object is in use. */ + PCG_MIGRATION, /* under page migration */ + /* flags for mem_cgroup and file and I/O status */ + PCG_MOVE_LOCK, /* For race between move_account v.s. following bits */ + PCG_FILE_MAPPED, /* page is accounted as "mapped" */ + /* No lock in page_cgroup */ + PCG_ACCT_LRU, /* page has been accounted for (under lru_lock) */ + __NR_PCG_FLAGS, +}; + +#ifndef __GENERATING_BOUNDS_H +#include + #ifdef CONFIG_CGROUP_MEM_RES_CTLR #include + /* * Page Cgroup can be considered as an extended mem_map. * A page_cgroup page is associated with every page descriptor. The @@ -13,7 +31,6 @@ struct page_cgroup { unsigned long flags; struct mem_cgroup *mem_cgroup; - struct page *page; struct list_head lru; /* per cgroup LRU list */ }; @@ -32,19 +49,7 @@ static inline void __init page_cgroup_init(void) #endif struct page_cgroup *lookup_page_cgroup(struct page *page); - -enum { - /* flags for mem_cgroup */ - PCG_LOCK, /* Lock for pc->mem_cgroup and following bits. */ - PCG_CACHE, /* charged as cache */ - PCG_USED, /* this object is in use. */ - PCG_MIGRATION, /* under page migration */ - /* flags for mem_cgroup and file and I/O status */ - PCG_MOVE_LOCK, /* For race between move_account v.s. following bits */ - PCG_FILE_MAPPED, /* page is accounted as "mapped" */ - /* No lock in page_cgroup */ - PCG_ACCT_LRU, /* page has been accounted for (under lru_lock) */ -}; +struct page *lookup_cgroup_page(struct page_cgroup *pc); #define TESTPCGFLAG(uname, lname) \ static inline int PageCgroup##uname(struct page_cgroup *pc) \ @@ -117,6 +122,39 @@ static inline void move_unlock_page_cgroup(struct page_cgroup *pc, local_irq_restore(*flags); } +#ifdef CONFIG_SPARSEMEM +#define PCG_ARRAYID_WIDTH SECTIONS_SHIFT +#else +#define PCG_ARRAYID_WIDTH NODES_SHIFT +#endif + +#if (PCG_ARRAYID_WIDTH > BITS_PER_LONG - NR_PCG_FLAGS) +#error Not enough space left in pc->flags to store page_cgroup array IDs +#endif + +/* pc->flags: ARRAY-ID | FLAGS */ + +#define PCG_ARRAYID_MASK ((1UL << PCG_ARRAYID_WIDTH) - 1) + +#define PCG_ARRAYID_OFFSET (BITS_PER_LONG - PCG_ARRAYID_WIDTH) +/* + * Zero the shift count for non-existant fields, to prevent compiler + * warnings and ensure references are optimized away. + */ +#define PCG_ARRAYID_SHIFT (PCG_ARRAYID_OFFSET * (PCG_ARRAYID_WIDTH != 0)) + +static inline void set_page_cgroup_array_id(struct page_cgroup *pc, + unsigned long id) +{ + pc->flags &= ~(PCG_ARRAYID_MASK << PCG_ARRAYID_SHIFT); + pc->flags |= (id & PCG_ARRAYID_MASK) << PCG_ARRAYID_SHIFT; +} + +static inline unsigned long page_cgroup_array_id(struct page_cgroup *pc) +{ + return (pc->flags >> PCG_ARRAYID_SHIFT) & PCG_ARRAYID_MASK; +} + #else /* CONFIG_CGROUP_MEM_RES_CTLR */ struct page_cgroup; @@ -137,7 +175,7 @@ static inline void __init page_cgroup_init_flatmem(void) { } -#endif +#endif /* CONFIG_CGROUP_MEM_RES_CTLR */ #include @@ -173,5 +211,8 @@ static inline void swap_cgroup_swapoff(int type) return; } -#endif -#endif +#endif /* CONFIG_CGROUP_MEM_RES_CTLR_SWAP */ + +#endif /* !__GENERATING_BOUNDS_H */ + +#endif /* __LINUX_PAGE_CGROUP_H */ -- cgit v1.2.3 From 7ffd4ca7a2cdd7a18f0b499a4e9e0e7cf36ba018 Mon Sep 17 00:00:00 2001 From: Johannes Weiner Date: Wed, 23 Mar 2011 16:42:35 -0700 Subject: memcg: convert uncharge batching from bytes to page granularity We never uncharge subpage quantities. Signed-off-by: Johannes Weiner Acked-by: KAMEZAWA Hiroyuki Cc: Daisuke Nishimura Cc: Balbir Singh Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/sched.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index 4b601be3dace..98fc7ed4b191 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1524,8 +1524,8 @@ struct task_struct { struct memcg_batch_info { int do_batch; /* incremented when batch uncharge started */ struct mem_cgroup *memcg; /* target memcg of uncharge */ - unsigned long bytes; /* uncharged usage */ - unsigned long memsw_bytes; /* uncharged mem+swap usage */ + unsigned long nr_pages; /* uncharged usage */ + unsigned long memsw_nr_pages; /* uncharged mem+swap usage */ } memcg_batch; #endif }; -- cgit v1.2.3 From 312ec7e50c4d3f40b3762af651d1aa79a67f556a Mon Sep 17 00:00:00 2001 From: Alexey Dobriyan Date: Wed, 23 Mar 2011 16:42:52 -0700 Subject: proc: make struct proc_dir_entry::namelen unsigned int 1. namelen is declared "unsigned short" which hints for "maybe space savings". Indeed in 2.4 struct proc_dir_entry looked like: struct proc_dir_entry { unsigned short low_ino; unsigned short namelen; Now, low_ino is "unsigned int", all savings were gone for a long time. "struct proc_dir_entry" is not that countless to worry about it's size, anyway. 2. converting from unsigned short to int/unsigned int can only create problems, we better play it safe. Space is not really conserved, because of natural alignment for the next field. sizeof(struct proc_dir_entry) remains the same. Signed-off-by: Alexey Dobriyan Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/proc_fs.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/proc_fs.h b/include/linux/proc_fs.h index 379eaed72d4b..838c1149251a 100644 --- a/include/linux/proc_fs.h +++ b/include/linux/proc_fs.h @@ -50,7 +50,7 @@ typedef int (write_proc_t)(struct file *file, const char __user *buffer, struct proc_dir_entry { unsigned int low_ino; - unsigned short namelen; + unsigned int namelen; const char *name; mode_t mode; nlink_t nlink; -- cgit v1.2.3 From f8f0626989c85b3d8bd67eff29d9dd3d14a5e71f Mon Sep 17 00:00:00 2001 From: Alexandre Bounine Date: Wed, 23 Mar 2011 16:43:02 -0700 Subject: rapidio: add architecture specific callbacks This set of patches eliminates RapidIO dependency on PowerPC architecture and makes it available to other architectures (x86 and MIPS). It also enables support of new platform independent RapidIO controllers such as PCI-to-SRIO and PCI Express-to-SRIO. This patch: Extend number of mport callback functions to eliminate direct linking of architecture specific mport operations. Signed-off-by: Alexandre Bounine Cc: Kumar Gala Cc: Matt Porter Cc: Li Yang Cc: Thomas Moll Cc: Micha Nelissen Cc: Benjamin Herrenschmidt Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/rio.h | 23 ++++++++++++++++++----- include/linux/rio_drv.h | 7 ++++--- 2 files changed, 22 insertions(+), 8 deletions(-) (limited to 'include/linux') diff --git a/include/linux/rio.h b/include/linux/rio.h index ff681ebba585..efed116efe9c 100644 --- a/include/linux/rio.h +++ b/include/linux/rio.h @@ -241,7 +241,7 @@ struct rio_mport { struct rio_msg inb_msg[RIO_MAX_MBOX]; struct rio_msg outb_msg[RIO_MAX_MBOX]; int host_deviceid; /* Host device ID */ - struct rio_ops *ops; /* maintenance transaction functions */ + struct rio_ops *ops; /* low-level architecture-dependent routines */ unsigned char id; /* port ID, unique among all ports */ unsigned char index; /* port index, unique among all port interfaces of the same type */ @@ -285,6 +285,13 @@ struct rio_net { * @cwrite: Callback to perform network write of config space. * @dsend: Callback to send a doorbell message. * @pwenable: Callback to enable/disable port-write message handling. + * @open_outb_mbox: Callback to initialize outbound mailbox. + * @close_outb_mbox: Callback to shut down outbound mailbox. + * @open_inb_mbox: Callback to initialize inbound mailbox. + * @close_inb_mbox: Callback to shut down inbound mailbox. + * @add_outb_message: Callback to add a message to an outbound mailbox queue. + * @add_inb_buffer: Callback to add a buffer to an inbound mailbox queue. + * @get_inb_message: Callback to get a message from an inbound mailbox queue. */ struct rio_ops { int (*lcread) (struct rio_mport *mport, int index, u32 offset, int len, @@ -297,6 +304,16 @@ struct rio_ops { u8 hopcount, u32 offset, int len, u32 data); int (*dsend) (struct rio_mport *mport, int index, u16 destid, u16 data); int (*pwenable) (struct rio_mport *mport, int enable); + int (*open_outb_mbox)(struct rio_mport *mport, void *dev_id, + int mbox, int entries); + void (*close_outb_mbox)(struct rio_mport *mport, int mbox); + int (*open_inb_mbox)(struct rio_mport *mport, void *dev_id, + int mbox, int entries); + void (*close_inb_mbox)(struct rio_mport *mport, int mbox); + int (*add_outb_message)(struct rio_mport *mport, struct rio_dev *rdev, + int mbox, void *buffer, size_t len); + int (*add_inb_buffer)(struct rio_mport *mport, int mbox, void *buf); + void *(*get_inb_message)(struct rio_mport *mport, int mbox); }; #define RIO_RESOURCE_MEM 0x00000100 @@ -380,10 +397,6 @@ union rio_pw_msg { /* Architecture and hardware-specific functions */ extern int rio_init_mports(void); extern void rio_register_mport(struct rio_mport *); -extern int rio_hw_add_outb_message(struct rio_mport *, struct rio_dev *, int, - void *, size_t); -extern int rio_hw_add_inb_buffer(struct rio_mport *, int, void *); -extern void *rio_hw_get_inb_message(struct rio_mport *, int); extern int rio_open_inb_mbox(struct rio_mport *, void *, int, int); extern void rio_close_inb_mbox(struct rio_mport *, int); extern int rio_open_outb_mbox(struct rio_mport *, void *, int, int); diff --git a/include/linux/rio_drv.h b/include/linux/rio_drv.h index e09e565c4bce..229b3ca23134 100644 --- a/include/linux/rio_drv.h +++ b/include/linux/rio_drv.h @@ -317,7 +317,8 @@ static inline int rio_add_outb_message(struct rio_mport *mport, struct rio_dev *rdev, int mbox, void *buffer, size_t len) { - return rio_hw_add_outb_message(mport, rdev, mbox, buffer, len); + return mport->ops->add_outb_message(mport, rdev, mbox, + buffer, len); } extern int rio_request_inb_mbox(struct rio_mport *, void *, int, int, @@ -336,7 +337,7 @@ extern int rio_release_inb_mbox(struct rio_mport *, int); static inline int rio_add_inb_buffer(struct rio_mport *mport, int mbox, void *buffer) { - return rio_hw_add_inb_buffer(mport, mbox, buffer); + return mport->ops->add_inb_buffer(mport, mbox, buffer); } /** @@ -348,7 +349,7 @@ static inline int rio_add_inb_buffer(struct rio_mport *mport, int mbox, */ static inline void *rio_get_inb_message(struct rio_mport *mport, int mbox) { - return rio_hw_get_inb_message(mport, mbox); + return mport->ops->get_inb_message(mport, mbox); } /* Doorbell management */ -- cgit v1.2.3 From 2f809985d2cbc78078b8da1cbed1f1ce1f4a0d5f Mon Sep 17 00:00:00 2001 From: Alexandre Bounine Date: Wed, 23 Mar 2011 16:43:04 -0700 Subject: rapidio: modify subsystem and driver initialization sequence Subsystem initialization sequence modified to support presence of multiple RapidIO controllers in the system. The new sequence is compatible with initialization of PCI devices. Signed-off-by: Alexandre Bounine Cc: Kumar Gala Cc: Matt Porter Cc: Li Yang Cc: Thomas Moll Cc: Micha Nelissen Cc: Benjamin Herrenschmidt Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/rio.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/rio.h b/include/linux/rio.h index efed116efe9c..b6bcb1632749 100644 --- a/include/linux/rio.h +++ b/include/linux/rio.h @@ -395,7 +395,6 @@ union rio_pw_msg { }; /* Architecture and hardware-specific functions */ -extern int rio_init_mports(void); extern void rio_register_mport(struct rio_mport *); extern int rio_open_inb_mbox(struct rio_mport *, void *, int, int); extern void rio_close_inb_mbox(struct rio_mport *, int); -- cgit v1.2.3 From 569fccb6b48878d654310e1ffaf9a5a6e46b3144 Mon Sep 17 00:00:00 2001 From: Alexandre Bounine Date: Wed, 23 Mar 2011 16:43:05 -0700 Subject: rapidio: modify mport ID assignment Changes mport ID and host destination ID assignment to implement unified method common to all mport drivers. Makes "riohdid=" kernel command line parameter common for all architectures with support for more that one host destination ID assignment. Signed-off-by: Alexandre Bounine Cc: Kumar Gala Cc: Matt Porter Cc: Li Yang Cc: Thomas Moll Cc: Micha Nelissen Cc: Benjamin Herrenschmidt Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/rio.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/rio.h b/include/linux/rio.h index b6bcb1632749..4e37a7cfa726 100644 --- a/include/linux/rio.h +++ b/include/linux/rio.h @@ -24,6 +24,7 @@ #define RIO_NO_HOPCOUNT -1 #define RIO_INVALID_DESTID 0xffff +#define RIO_MAX_MPORTS 8 #define RIO_MAX_MPORT_RESOURCES 16 #define RIO_MAX_DEV_RESOURCES 16 -- cgit v1.2.3 From 45a68628d37222e655219febce9e91b6484789b2 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Wed, 23 Mar 2011 16:43:12 -0700 Subject: pid: remove the child_reaper special case in init/main.c This patchset is a cleanup and a preparation to unshare the pid namespace. These prerequisites prepare for Eric's patchset to give a file descriptor to a namespace and join an existing namespace. This patch: It turns out that the existing assignment in copy_process of the child_reaper can handle the initial assignment of child_reaper we just need to generalize the test in kernel/fork.c Signed-off-by: Eric W. Biederman Signed-off-by: Daniel Lezcano Cc: Oleg Nesterov Cc: Alexey Dobriyan Acked-by: Serge E. Hallyn Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/pid.h | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pid.h b/include/linux/pid.h index 49f1c2f66e95..efceda0a51b1 100644 --- a/include/linux/pid.h +++ b/include/linux/pid.h @@ -140,6 +140,17 @@ static inline struct pid_namespace *ns_of_pid(struct pid *pid) return ns; } +/* + * is_child_reaper returns true if the pid is the init process + * of the current namespace. As this one could be checked before + * pid_ns->child_reaper is assigned in copy_process, we check + * with the pid number. + */ +static inline bool is_child_reaper(struct pid *pid) +{ + return pid->numbers[pid->level].nr == 1; +} + /* * the helpers to get the pid's id seen from different namespaces * -- cgit v1.2.3 From 59607db367c57f515183cb203642291bb14d9c40 Mon Sep 17 00:00:00 2001 From: "Serge E. Hallyn" Date: Wed, 23 Mar 2011 16:43:16 -0700 Subject: userns: add a user_namespace as creator/owner of uts_namespace The expected course of development for user namespaces targeted capabilities is laid out at https://wiki.ubuntu.com/UserNamespace. Goals: - Make it safe for an unprivileged user to unshare namespaces. They will be privileged with respect to the new namespace, but this should only include resources which the unprivileged user already owns. - Provide separate limits and accounting for userids in different namespaces. Status: Currently (as of 2.6.38) you can clone with the CLONE_NEWUSER flag to get a new user namespace if you have the CAP_SYS_ADMIN, CAP_SETUID, and CAP_SETGID capabilities. What this gets you is a whole new set of userids, meaning that user 500 will have a different 'struct user' in your namespace than in other namespaces. So any accounting information stored in struct user will be unique to your namespace. However, throughout the kernel there are checks which - simply check for a capability. Since root in a child namespace has all capabilities, this means that a child namespace is not constrained. - simply compare uid1 == uid2. Since these are the integer uids, uid 500 in namespace 1 will be said to be equal to uid 500 in namespace 2. As a result, the lxc implementation at lxc.sf.net does not use user namespaces. This is actually helpful because it leaves us free to develop user namespaces in such a way that, for some time, user namespaces may be unuseful. Bugs aside, this patchset is supposed to not at all affect systems which are not actively using user namespaces, and only restrict what tasks in child user namespace can do. They begin to limit privilege to a user namespace, so that root in a container cannot kill or ptrace tasks in the parent user namespace, and can only get world access rights to files. Since all files currently belong to the initila user namespace, that means that child user namespaces can only get world access rights to *all* files. While this temporarily makes user namespaces bad for system containers, it starts to get useful for some sandboxing. I've run the 'runltplite.sh' with and without this patchset and found no difference. This patch: copy_process() handles CLONE_NEWUSER before the rest of the namespaces. So in the case of clone(CLONE_NEWUSER|CLONE_NEWUTS) the new uts namespace will have the new user namespace as its owner. That is what we want, since we want root in that new userns to be able to have privilege over it. Changelog: Feb 15: don't set uts_ns->user_ns if we didn't create a new uts_ns. Feb 23: Move extern init_user_ns declaration from init/version.c to utsname.h. Signed-off-by: Serge E. Hallyn Acked-by: "Eric W. Biederman" Acked-by: Daniel Lezcano Acked-by: David Howells Cc: James Morris Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/utsname.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/utsname.h b/include/linux/utsname.h index 69f39974c041..2c3c0f543705 100644 --- a/include/linux/utsname.h +++ b/include/linux/utsname.h @@ -37,9 +37,13 @@ struct new_utsname { #include #include +struct user_namespace; +extern struct user_namespace init_user_ns; + struct uts_namespace { struct kref kref; struct new_utsname name; + struct user_namespace *user_ns; }; extern struct uts_namespace init_uts_ns; -- cgit v1.2.3 From 3486740a4f32a6a466f5ac931654d154790ba648 Mon Sep 17 00:00:00 2001 From: "Serge E. Hallyn" Date: Wed, 23 Mar 2011 16:43:17 -0700 Subject: userns: security: make capabilities relative to the user namespace - Introduce ns_capable to test for a capability in a non-default user namespace. - Teach cap_capable to handle capabilities in a non-default user namespace. The motivation is to get to the unprivileged creation of new namespaces. It looks like this gets us 90% of the way there, with only potential uid confusion issues left. I still need to handle getting all caps after creation but otherwise I think I have a good starter patch that achieves all of your goals. Changelog: 11/05/2010: [serge] add apparmor 12/14/2010: [serge] fix capabilities to created user namespaces Without this, if user serge creates a user_ns, he won't have capabilities to the user_ns he created. THis is because we were first checking whether his effective caps had the caps he needed and returning -EPERM if not, and THEN checking whether he was the creator. Reverse those checks. 12/16/2010: [serge] security_real_capable needs ns argument in !security case 01/11/2011: [serge] add task_ns_capable helper 01/11/2011: [serge] add nsown_capable() helper per Bastian Blank suggestion 02/16/2011: [serge] fix a logic bug: the root user is always creator of init_user_ns, but should not always have capabilities to it! Fix the check in cap_capable(). 02/21/2011: Add the required user_ns parameter to security_capable, fixing a compile failure. 02/23/2011: Convert some macros to functions as per akpm comments. Some couldn't be converted because we can't easily forward-declare them (they are inline if !SECURITY, extern if SECURITY). Add a current_user_ns function so we can use it in capability.h without #including cred.h. Move all forward declarations together to the top of the #ifdef __KERNEL__ section, and use kernel-doc format. 02/23/2011: Per dhowells, clean up comment in cap_capable(). 02/23/2011: Per akpm, remove unreachable 'return -EPERM' in cap_capable. (Original written and signed off by Eric; latest, modified version acked by him) [akpm@linux-foundation.org: fix build] [akpm@linux-foundation.org: export current_user_ns() for ecryptfs] [serge.hallyn@canonical.com: remove unneeded extra argument in selinux's task_has_capability] Signed-off-by: Eric W. Biederman Signed-off-by: Serge E. Hallyn Acked-by: "Eric W. Biederman" Acked-by: Daniel Lezcano Acked-by: David Howells Cc: James Morris Signed-off-by: Serge E. Hallyn Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/capability.h | 36 ++++++++++++++++++++++++++++-------- include/linux/cred.h | 4 +++- include/linux/security.h | 28 +++++++++++++++++----------- 3 files changed, 48 insertions(+), 20 deletions(-) (limited to 'include/linux') diff --git a/include/linux/capability.h b/include/linux/capability.h index fb16a3699b99..7c9c82903012 100644 --- a/include/linux/capability.h +++ b/include/linux/capability.h @@ -368,6 +368,17 @@ struct cpu_vfs_cap_data { #ifdef __KERNEL__ +struct dentry; +struct user_namespace; + +extern struct user_namespace init_user_ns; + +struct user_namespace *current_user_ns(void); + +extern const kernel_cap_t __cap_empty_set; +extern const kernel_cap_t __cap_full_set; +extern const kernel_cap_t __cap_init_eff_set; + /* * Internal kernel functions only */ @@ -530,10 +541,6 @@ static inline kernel_cap_t cap_raise_nfsd_set(const kernel_cap_t a, cap_intersect(permitted, __cap_nfsd_set)); } -extern const kernel_cap_t __cap_empty_set; -extern const kernel_cap_t __cap_full_set; -extern const kernel_cap_t __cap_init_eff_set; - /** * has_capability - Determine if a task has a superior capability available * @t: The task in question @@ -544,7 +551,7 @@ extern const kernel_cap_t __cap_init_eff_set; * * Note that this does not set PF_SUPERPRIV on the task. */ -#define has_capability(t, cap) (security_real_capable((t), (cap)) == 0) +#define has_capability(t, cap) (security_real_capable((t), &init_user_ns, (cap)) == 0) /** * has_capability_noaudit - Determine if a task has a superior capability available (unaudited) @@ -558,12 +565,25 @@ extern const kernel_cap_t __cap_init_eff_set; * Note that this does not set PF_SUPERPRIV on the task. */ #define has_capability_noaudit(t, cap) \ - (security_real_capable_noaudit((t), (cap)) == 0) + (security_real_capable_noaudit((t), &init_user_ns, (cap)) == 0) -extern int capable(int cap); +extern bool capable(int cap); +extern bool ns_capable(struct user_namespace *ns, int cap); +extern bool task_ns_capable(struct task_struct *t, int cap); + +/** + * nsown_capable - Check superior capability to one's own user_ns + * @cap: The capability in question + * + * Return true if the current task has the given superior capability + * targeted at its own user namespace. + */ +static inline bool nsown_capable(int cap) +{ + return ns_capable(current_user_ns(), cap); +} /* audit system wants to get cap info from files as well */ -struct dentry; extern int get_vfs_caps_from_disk(const struct dentry *dentry, struct cpu_vfs_cap_data *cpu_caps); #endif /* __KERNEL__ */ diff --git a/include/linux/cred.h b/include/linux/cred.h index 4aaeab376446..9aeeb0ba2003 100644 --- a/include/linux/cred.h +++ b/include/linux/cred.h @@ -354,9 +354,11 @@ static inline void put_cred(const struct cred *_cred) #define current_fsgid() (current_cred_xxx(fsgid)) #define current_cap() (current_cred_xxx(cap_effective)) #define current_user() (current_cred_xxx(user)) -#define current_user_ns() (current_cred_xxx(user)->user_ns) +#define _current_user_ns() (current_cred_xxx(user)->user_ns) #define current_security() (current_cred_xxx(security)) +extern struct user_namespace *current_user_ns(void); + #define current_uid_gid(_uid, _gid) \ do { \ const struct cred *__cred; \ diff --git a/include/linux/security.h b/include/linux/security.h index 56cac520d014..ca02f1716736 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -47,13 +47,14 @@ struct ctl_table; struct audit_krule; +struct user_namespace; /* * These functions are in security/capability.c and are used * as the default capabilities functions */ extern int cap_capable(struct task_struct *tsk, const struct cred *cred, - int cap, int audit); + struct user_namespace *ns, int cap, int audit); extern int cap_settime(const struct timespec *ts, const struct timezone *tz); extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode); extern int cap_ptrace_traceme(struct task_struct *parent); @@ -1262,6 +1263,7 @@ static inline void security_free_mnt_opts(struct security_mnt_opts *opts) * credentials. * @tsk contains the task_struct for the process. * @cred contains the credentials to use. + * @ns contains the user namespace we want the capability in * @cap contains the capability . * @audit: Whether to write an audit message or not * Return 0 if the capability is granted for @tsk. @@ -1384,7 +1386,7 @@ struct security_operations { const kernel_cap_t *inheritable, const kernel_cap_t *permitted); int (*capable) (struct task_struct *tsk, const struct cred *cred, - int cap, int audit); + struct user_namespace *ns, int cap, int audit); int (*quotactl) (int cmds, int type, int id, struct super_block *sb); int (*quota_on) (struct dentry *dentry); int (*syslog) (int type); @@ -1665,9 +1667,12 @@ int security_capset(struct cred *new, const struct cred *old, const kernel_cap_t *effective, const kernel_cap_t *inheritable, const kernel_cap_t *permitted); -int security_capable(const struct cred *cred, int cap); -int security_real_capable(struct task_struct *tsk, int cap); -int security_real_capable_noaudit(struct task_struct *tsk, int cap); +int security_capable(struct user_namespace *ns, const struct cred *cred, + int cap); +int security_real_capable(struct task_struct *tsk, struct user_namespace *ns, + int cap); +int security_real_capable_noaudit(struct task_struct *tsk, + struct user_namespace *ns, int cap); int security_quotactl(int cmds, int type, int id, struct super_block *sb); int security_quota_on(struct dentry *dentry); int security_syslog(int type); @@ -1860,28 +1865,29 @@ static inline int security_capset(struct cred *new, return cap_capset(new, old, effective, inheritable, permitted); } -static inline int security_capable(const struct cred *cred, int cap) +static inline int security_capable(struct user_namespace *ns, + const struct cred *cred, int cap) { - return cap_capable(current, cred, cap, SECURITY_CAP_AUDIT); + return cap_capable(current, cred, ns, cap, SECURITY_CAP_AUDIT); } -static inline int security_real_capable(struct task_struct *tsk, int cap) +static inline int security_real_capable(struct task_struct *tsk, struct user_namespace *ns, int cap) { int ret; rcu_read_lock(); - ret = cap_capable(tsk, __task_cred(tsk), cap, SECURITY_CAP_AUDIT); + ret = cap_capable(tsk, __task_cred(tsk), ns, cap, SECURITY_CAP_AUDIT); rcu_read_unlock(); return ret; } static inline -int security_real_capable_noaudit(struct task_struct *tsk, int cap) +int security_real_capable_noaudit(struct task_struct *tsk, struct user_namespace *ns, int cap) { int ret; rcu_read_lock(); - ret = cap_capable(tsk, __task_cred(tsk), cap, + ret = cap_capable(tsk, __task_cred(tsk), ns, cap, SECURITY_CAP_NOAUDIT); rcu_read_unlock(); return ret; -- cgit v1.2.3 From bb96a6f50be27390dc959ff67d9ea0ea0cfbe177 Mon Sep 17 00:00:00 2001 From: "Serge E. Hallyn" Date: Wed, 23 Mar 2011 16:43:18 -0700 Subject: userns: allow sethostname in a container Changelog: Feb 23: let clone_uts_ns() handle setting uts->user_ns To do so we need to pass in the task_struct who'll get the utsname, so we can get its user_ns. Feb 23: As per Oleg's coment, just pass in tsk, instead of two of its members. Signed-off-by: Serge E. Hallyn Acked-by: "Eric W. Biederman" Acked-by: Daniel Lezcano Acked-by: David Howells Cc: James Morris Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/utsname.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/utsname.h b/include/linux/utsname.h index 2c3c0f543705..4e5b0213fdc1 100644 --- a/include/linux/utsname.h +++ b/include/linux/utsname.h @@ -54,7 +54,7 @@ static inline void get_uts_ns(struct uts_namespace *ns) } extern struct uts_namespace *copy_utsname(unsigned long flags, - struct uts_namespace *ns); + struct task_struct *tsk); extern void free_uts_ns(struct kref *kref); static inline void put_uts_ns(struct uts_namespace *ns) @@ -71,12 +71,12 @@ static inline void put_uts_ns(struct uts_namespace *ns) } static inline struct uts_namespace *copy_utsname(unsigned long flags, - struct uts_namespace *ns) + struct task_struct *tsk) { if (flags & CLONE_NEWUTS) return ERR_PTR(-EINVAL); - return ns; + return tsk->nsproxy->uts_ns; } #endif -- cgit v1.2.3 From 8409cca7056113bee3236cb6a8e4d8d4d1eef102 Mon Sep 17 00:00:00 2001 From: "Serge E. Hallyn" Date: Wed, 23 Mar 2011 16:43:20 -0700 Subject: userns: allow ptrace from non-init user namespaces ptrace is allowed to tasks in the same user namespace according to the usual rules (i.e. the same rules as for two tasks in the init user namespace). ptrace is also allowed to a user namespace to which the current task the has CAP_SYS_PTRACE capability. Changelog: Dec 31: Address feedback by Eric: . Correct ptrace uid check . Rename may_ptrace_ns to ptrace_capable . Also fix the cap_ptrace checks. Jan 1: Use const cred struct Jan 11: use task_ns_capable() in place of ptrace_capable(). Feb 23: same_or_ancestore_user_ns() was not an appropriate check to constrain cap_issubset. Rather, cap_issubset() only is meaningful when both capsets are in the same user_ns. Signed-off-by: Serge E. Hallyn Cc: "Eric W. Biederman" Acked-by: Daniel Lezcano Acked-by: David Howells Cc: James Morris Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/capability.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/capability.h b/include/linux/capability.h index 7c9c82903012..2ec4a8cc86a5 100644 --- a/include/linux/capability.h +++ b/include/linux/capability.h @@ -553,6 +553,8 @@ static inline kernel_cap_t cap_raise_nfsd_set(const kernel_cap_t a, */ #define has_capability(t, cap) (security_real_capable((t), &init_user_ns, (cap)) == 0) +#define has_ns_capability(t, ns, cap) (security_real_capable((t), (ns), (cap)) == 0) + /** * has_capability_noaudit - Determine if a task has a superior capability available (unaudited) * @t: The task in question -- cgit v1.2.3 From 3263245de48344ad7bdd0e7256bf1606d2592f88 Mon Sep 17 00:00:00 2001 From: "Serge E. Hallyn" Date: Wed, 23 Mar 2011 16:43:21 -0700 Subject: userns: make has_capability* into real functions So we can let type safety keep things sane, and as a bonus we can remove the declaration of init_user_ns in capability.h. Signed-off-by: Serge E. Hallyn Cc: "Eric W. Biederman" Cc: Daniel Lezcano Cc: David Howells Cc: James Morris Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/capability.h | 34 ++++------------------------------ 1 file changed, 4 insertions(+), 30 deletions(-) (limited to 'include/linux') diff --git a/include/linux/capability.h b/include/linux/capability.h index 2ec4a8cc86a5..16ee8b49a200 100644 --- a/include/linux/capability.h +++ b/include/linux/capability.h @@ -371,8 +371,6 @@ struct cpu_vfs_cap_data { struct dentry; struct user_namespace; -extern struct user_namespace init_user_ns; - struct user_namespace *current_user_ns(void); extern const kernel_cap_t __cap_empty_set; @@ -541,34 +539,10 @@ static inline kernel_cap_t cap_raise_nfsd_set(const kernel_cap_t a, cap_intersect(permitted, __cap_nfsd_set)); } -/** - * has_capability - Determine if a task has a superior capability available - * @t: The task in question - * @cap: The capability to be tested for - * - * Return true if the specified task has the given superior capability - * currently in effect, false if not. - * - * Note that this does not set PF_SUPERPRIV on the task. - */ -#define has_capability(t, cap) (security_real_capable((t), &init_user_ns, (cap)) == 0) - -#define has_ns_capability(t, ns, cap) (security_real_capable((t), (ns), (cap)) == 0) - -/** - * has_capability_noaudit - Determine if a task has a superior capability available (unaudited) - * @t: The task in question - * @cap: The capability to be tested for - * - * Return true if the specified task has the given superior capability - * currently in effect, false if not, but don't write an audit message for the - * check. - * - * Note that this does not set PF_SUPERPRIV on the task. - */ -#define has_capability_noaudit(t, cap) \ - (security_real_capable_noaudit((t), &init_user_ns, (cap)) == 0) - +extern bool has_capability(struct task_struct *t, int cap); +extern bool has_ns_capability(struct task_struct *t, + struct user_namespace *ns, int cap); +extern bool has_capability_noaudit(struct task_struct *t, int cap); extern bool capable(int cap); extern bool ns_capable(struct user_namespace *ns, int cap); extern bool task_ns_capable(struct task_struct *t, int cap); -- cgit v1.2.3 From b515498f5bb5f38fc0e390b4ff7d00b6077de127 Mon Sep 17 00:00:00 2001 From: "Serge E. Hallyn" Date: Wed, 23 Mar 2011 16:43:23 -0700 Subject: userns: add a user namespace owner of ipc ns Changelog: Feb 15: Don't set new ipc->user_ns if we didn't create a new ipc_ns. Feb 23: Move extern declaration to ipc_namespace.h, and group fwd declarations at top. Signed-off-by: Serge E. Hallyn Acked-by: "Eric W. Biederman" Acked-by: Daniel Lezcano Acked-by: David Howells Cc: James Morris Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/ipc_namespace.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ipc_namespace.h b/include/linux/ipc_namespace.h index 51952989ad42..d3c32dcec623 100644 --- a/include/linux/ipc_namespace.h +++ b/include/linux/ipc_namespace.h @@ -15,6 +15,7 @@ #define IPCNS_CALLBACK_PRI 0 +struct user_namespace; struct ipc_ids { int in_use; @@ -56,6 +57,8 @@ struct ipc_namespace { unsigned int mq_msg_max; /* initialized to DFLT_MSGMAX */ unsigned int mq_msgsize_max; /* initialized to DFLT_MSGSIZEMAX */ + /* user_ns which owns the ipc ns */ + struct user_namespace *user_ns; }; extern struct ipc_namespace init_ipc_ns; -- cgit v1.2.3 From b0e77598f87107001a00b8a4ece9c95e4254ccc4 Mon Sep 17 00:00:00 2001 From: "Serge E. Hallyn" Date: Wed, 23 Mar 2011 16:43:24 -0700 Subject: userns: user namespaces: convert several capable() calls CAP_IPC_OWNER and CAP_IPC_LOCK can be checked against current_user_ns(), because the resource comes from current's own ipc namespace. setuid/setgid are to uids in own namespace, so again checks can be against current_user_ns(). Changelog: Jan 11: Use task_ns_capable() in place of sched_capable(). Jan 11: Use nsown_capable() as suggested by Bastian Blank. Jan 11: Clarify (hopefully) some logic in futex and sched.c Feb 15: use ns_capable for ipc, not nsown_capable Feb 23: let copy_ipcs handle setting ipc_ns->user_ns Feb 23: pass ns down rather than taking it from current [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Serge E. Hallyn Acked-by: "Eric W. Biederman" Acked-by: Daniel Lezcano Acked-by: David Howells Cc: James Morris Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/ipc_namespace.h | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ipc_namespace.h b/include/linux/ipc_namespace.h index d3c32dcec623..a6d1655f9607 100644 --- a/include/linux/ipc_namespace.h +++ b/include/linux/ipc_namespace.h @@ -5,6 +5,7 @@ #include #include #include +#include /* * ipc namespace events @@ -93,7 +94,7 @@ static inline int mq_init_ns(struct ipc_namespace *ns) { return 0; } #if defined(CONFIG_IPC_NS) extern struct ipc_namespace *copy_ipcs(unsigned long flags, - struct ipc_namespace *ns); + struct task_struct *tsk); static inline struct ipc_namespace *get_ipc_ns(struct ipc_namespace *ns) { if (ns) @@ -104,12 +105,12 @@ static inline struct ipc_namespace *get_ipc_ns(struct ipc_namespace *ns) extern void put_ipc_ns(struct ipc_namespace *ns); #else static inline struct ipc_namespace *copy_ipcs(unsigned long flags, - struct ipc_namespace *ns) + struct task_struct *tsk) { if (flags & CLONE_NEWIPC) return ERR_PTR(-EINVAL); - return ns; + return tsk->nsproxy->ipc_ns; } static inline struct ipc_namespace *get_ipc_ns(struct ipc_namespace *ns) -- cgit v1.2.3 From e795b71799ff0b27365020c9ddaa25d0d83f99c8 Mon Sep 17 00:00:00 2001 From: "Serge E. Hallyn" Date: Wed, 23 Mar 2011 16:43:25 -0700 Subject: userns: userns: check user namespace for task->file uid equivalence checks Cheat for now and say all files belong to init_user_ns. Next step will be to let superblocks belong to a user_ns, and derive inode_userns(inode) from inode->i_sb->s_user_ns. Finally we'll introduce more flexible arrangements. Changelog: Feb 15: make is_owner_or_cap take const struct inode Feb 23: make is_owner_or_cap bool [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Serge E. Hallyn Acked-by: "Eric W. Biederman" Acked-by: Daniel Lezcano Acked-by: David Howells Cc: James Morris Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/fs.h | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index 12529e966350..9eebc646d14a 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1457,8 +1457,13 @@ enum { #define put_fs_excl() atomic_dec(¤t->fs_excl) #define has_fs_excl() atomic_read(¤t->fs_excl) -#define is_owner_or_cap(inode) \ - ((current_fsuid() == (inode)->i_uid) || capable(CAP_FOWNER)) +/* + * until VFS tracks user namespaces for inodes, just make all files + * belong to init_user_ns + */ +extern struct user_namespace init_user_ns; +#define inode_userns(inode) (&init_user_ns) +extern bool is_owner_or_cap(const struct inode *inode); /* not quite ready to be deprecated, but... */ extern void lock_super(struct super_block *); -- cgit v1.2.3 From 2e1496707560ecf98e9b0604622c0990f94861d3 Mon Sep 17 00:00:00 2001 From: "Serge E. Hallyn" Date: Wed, 23 Mar 2011 16:43:26 -0700 Subject: userns: rename is_owner_or_cap to inode_owner_or_capable And give it a kernel-doc comment. [akpm@linux-foundation.org: btrfs changed in linux-next] Signed-off-by: Serge E. Hallyn Cc: "Eric W. Biederman" Cc: Daniel Lezcano Acked-by: David Howells Cc: James Morris Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/fs.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index 9eebc646d14a..4dda076c24a1 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1463,7 +1463,7 @@ enum { */ extern struct user_namespace init_user_ns; #define inode_userns(inode) (&init_user_ns) -extern bool is_owner_or_cap(const struct inode *inode); +extern bool inode_owner_or_capable(const struct inode *inode); /* not quite ready to be deprecated, but... */ extern void lock_super(struct super_block *); -- cgit v1.2.3 From 93a72052be81823fa1584b9be037d51924f9efa4 Mon Sep 17 00:00:00 2001 From: Olaf Hering Date: Wed, 23 Mar 2011 16:43:29 -0700 Subject: crash_dump: export is_kdump_kernel to modules, consolidate elfcorehdr_addr, setup_elfcorehdr and saved_max_pfn The Xen PV drivers in a crashed HVM guest can not connect to the dom0 backend drivers because both frontend and backend drivers are still in connected state. To run the connection reset function only in case of a crashdump, the is_kdump_kernel() function needs to be available for the PV driver modules. Consolidate elfcorehdr_addr, setup_elfcorehdr and saved_max_pfn into kernel/crash_dump.c Also export elfcorehdr_addr to make is_kdump_kernel() usable for modules. Leave 'elfcorehdr' as early_param(). This changes powerpc from __setup() to early_param(). It adds an address range check from x86 also on ia64 and powerpc. [akpm@linux-foundation.org: additional #includes] [akpm@linux-foundation.org: remove elfcorehdr_addr export] [akpm@linux-foundation.org: fix for Tejun's mm/nobootmem.c changes] Signed-off-by: Olaf Hering Cc: Russell King Cc: "Luck, Tony" Cc: Benjamin Herrenschmidt Cc: Paul Mundt Cc: Ingo Molnar Cc: Thomas Gleixner Cc: "H. Peter Anvin" Cc: Johannes Weiner Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/bootmem.h | 4 ---- 1 file changed, 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/bootmem.h b/include/linux/bootmem.h index 499dfe982a0e..b8613e806aa9 100644 --- a/include/linux/bootmem.h +++ b/include/linux/bootmem.h @@ -19,10 +19,6 @@ extern unsigned long min_low_pfn; */ extern unsigned long max_pfn; -#ifdef CONFIG_CRASH_DUMP -extern unsigned long saved_max_pfn; -#endif - #ifndef CONFIG_NO_BOOTMEM /* * node_bootmem_map is a map pointer - the bits represent all physical -- cgit v1.2.3 From 0f77a8d378254f27df4a114a5da67223af1fe93f Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Thu, 24 Mar 2011 11:42:29 +0900 Subject: vsprintf: Introduce %pB format specifier The %pB format specifier is for stack backtrace. Its handler sprint_backtrace() does symbol lookup using (address-1) to ensure the address will not point outside of the function. If there is a tail-call to the function marked "noreturn", gcc optimized out the code after the call then causes saved return address points outside of the function (i.e. the start of the next function), so pollutes call trace somewhat. This patch adds the %pB printk mechanism that allows architecture call-trace printout functions to improve backtrace printouts. Signed-off-by: Namhyung Kim Acked-by: Steven Rostedt Acked-by: Frederic Weisbecker Cc: Linus Torvalds Cc: Andrew Morton Cc: linux-arch@vger.kernel.org LKML-Reference: <1300934550-21394-1-git-send-email-namhyung@gmail.com> Signed-off-by: Ingo Molnar --- include/linux/kallsyms.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/kallsyms.h b/include/linux/kallsyms.h index d8e9b3d1c23c..0df513b7a9f8 100644 --- a/include/linux/kallsyms.h +++ b/include/linux/kallsyms.h @@ -36,6 +36,7 @@ const char *kallsyms_lookup(unsigned long addr, /* Look up a kernel symbol and return it in a text buffer. */ extern int sprint_symbol(char *buffer, unsigned long address); +extern int sprint_backtrace(char *buffer, unsigned long address); /* Look up a kernel symbol and print it to the kernel messages. */ extern void __print_symbol(const char *fmt, unsigned long address); @@ -79,6 +80,12 @@ static inline int sprint_symbol(char *buffer, unsigned long addr) return 0; } +static inline int sprint_backtrace(char *buffer, unsigned long addr) +{ + *buffer = '\0'; + return 0; +} + static inline int lookup_symbol_name(unsigned long addr, char *symname) { return -ERANGE; -- cgit v1.2.3 From f868120549fc1664b2c451d4b9882a363928c698 Mon Sep 17 00:00:00 2001 From: Milan Broz Date: Thu, 24 Mar 2011 13:54:30 +0000 Subject: dm ioctl: add flag to wipe buffers for secure data Add DM_SECURE_DATA_FLAG which userspace can use to ensure that all buffers allocated for dm-ioctl are wiped immediately after use. The user buffer is wiped as well (we do not want to keep and return sensitive data back to userspace if the flag is set). Wiping is useful for cryptsetup to ensure that the key is present in memory only in defined places and only for the time needed. (For crypt, key can be present in table during load or table status, wait and message commands). Signed-off-by: Milan Broz Signed-off-by: Alasdair G Kergon --- include/linux/dm-ioctl.h | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/dm-ioctl.h b/include/linux/dm-ioctl.h index 78bbf47bbb96..3708455ee6c3 100644 --- a/include/linux/dm-ioctl.h +++ b/include/linux/dm-ioctl.h @@ -267,9 +267,9 @@ enum { #define DM_DEV_SET_GEOMETRY _IOWR(DM_IOCTL, DM_DEV_SET_GEOMETRY_CMD, struct dm_ioctl) #define DM_VERSION_MAJOR 4 -#define DM_VERSION_MINOR 19 -#define DM_VERSION_PATCHLEVEL 1 -#define DM_VERSION_EXTRA "-ioctl (2011-01-07)" +#define DM_VERSION_MINOR 20 +#define DM_VERSION_PATCHLEVEL 0 +#define DM_VERSION_EXTRA "-ioctl (2011-02-02)" /* Status bits */ #define DM_READONLY_FLAG (1 << 0) /* In/Out */ @@ -328,4 +328,10 @@ enum { */ #define DM_UUID_FLAG (1 << 14) /* In */ +/* + * If set, all buffers are wiped after use. Use when sending + * or requesting sensitive data such as an encryption key. + */ +#define DM_SECURE_DATA_FLAG (1 << 15) /* In */ + #endif /* _LINUX_DM_IOCTL_H */ -- cgit v1.2.3 From 9d9659b6c0ebf7dde65ebada4c67980818245913 Mon Sep 17 00:00:00 2001 From: Simon Horman Date: Thu, 24 Mar 2011 07:04:38 +0000 Subject: mmc: Add MMC_PROGRESS_* This is my second attempt to make this enum generally available. The first attempt added MMCIF_PROGRESS_* to include/linux/mmc/sh_mmcif.h. However this is not sufficiently generic as the enum will be used by SDHI boot code. Signed-off-by: Simon Horman Signed-off-by: Paul Mundt --- include/linux/mmc/boot.h | 7 +++++++ include/linux/mmc/sh_mmcif.h | 3 --- 2 files changed, 7 insertions(+), 3 deletions(-) create mode 100644 include/linux/mmc/boot.h (limited to 'include/linux') diff --git a/include/linux/mmc/boot.h b/include/linux/mmc/boot.h new file mode 100644 index 000000000000..39d787c229cb --- /dev/null +++ b/include/linux/mmc/boot.h @@ -0,0 +1,7 @@ +#ifndef MMC_BOOT_H +#define MMC_BOOT_H + +enum { MMC_PROGRESS_ENTER, MMC_PROGRESS_INIT, + MMC_PROGRESS_LOAD, MMC_PROGRESS_DONE }; + +#endif diff --git a/include/linux/mmc/sh_mmcif.h b/include/linux/mmc/sh_mmcif.h index 38d393092812..9eb9b4b96f55 100644 --- a/include/linux/mmc/sh_mmcif.h +++ b/include/linux/mmc/sh_mmcif.h @@ -104,9 +104,6 @@ static inline void sh_mmcif_writel(void __iomem *addr, int reg, u32 val) #define SH_MMCIF_BBS 512 /* boot block size */ -enum { MMCIF_PROGRESS_ENTER, MMCIF_PROGRESS_INIT, - MMCIF_PROGRESS_LOAD, MMCIF_PROGRESS_DONE }; - static inline void sh_mmcif_boot_cmd_send(void __iomem *base, unsigned long cmd, unsigned long arg) { -- cgit v1.2.3 From 7c5130588d691a3b34d02312f1bd1b6d56fe0100 Mon Sep 17 00:00:00 2001 From: Bryan Schumaker Date: Thu, 24 Mar 2011 17:12:24 +0000 Subject: NFS: lookup supports alternate client A later patch will need to perform a lookup using an alternate client with a different security flavor. This patch adds support for doing that on NFS v4. Signed-off-by: Bryan Schumaker Signed-off-by: Trond Myklebust --- include/linux/nfs_xdr.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 2c2c67d2eb42..71ee6799db9b 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -1071,7 +1071,7 @@ struct nfs_rpc_ops { struct nfs_fattr *); int (*setattr) (struct dentry *, struct nfs_fattr *, struct iattr *); - int (*lookup) (struct inode *, struct qstr *, + int (*lookup) (struct rpc_clnt *clnt, struct inode *, struct qstr *, struct nfs_fh *, struct nfs_fattr *); int (*access) (struct inode *, struct nfs_access_entry *); int (*readlink)(struct inode *, struct page *, unsigned int, -- cgit v1.2.3 From 5a5ea0d485c9715c86bf858bbdc5f6d373b3db88 Mon Sep 17 00:00:00 2001 From: Bryan Schumaker Date: Thu, 24 Mar 2011 17:12:29 +0000 Subject: NFS: Add secinfo procedure This patch adds the nfs4 operation secinfo as a valid nfs rpc operation. Signed-off-by: Bryan Schumaker Signed-off-by: Trond Myklebust --- include/linux/nfs4.h | 1 + include/linux/nfs_xdr.h | 37 +++++++++++++++++++++++++++++++++++++ 2 files changed, 38 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nfs4.h b/include/linux/nfs4.h index 134716e5e350..7e7f6b7e46b1 100644 --- a/include/linux/nfs4.h +++ b/include/linux/nfs4.h @@ -550,6 +550,7 @@ enum { NFSPROC4_CLNT_SETACL, NFSPROC4_CLNT_FS_LOCATIONS, NFSPROC4_CLNT_RELEASE_LOCKOWNER, + NFSPROC4_CLNT_SECINFO, /* nfs41 */ NFSPROC4_CLNT_EXCHANGE_ID, diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 71ee6799db9b..3f32bf175840 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -3,6 +3,7 @@ #include #include +#include /* * To change the maximum rsize and wsize supported by the NFS client, adjust @@ -14,6 +15,9 @@ #define NFS_DEF_FILE_IO_SIZE (4096U) #define NFS_MIN_FILE_IO_SIZE (1024U) +/* Forward declaration for NFS v3 */ +struct nfs4_secinfo_flavors; + struct nfs_fsid { uint64_t major; uint64_t minor; @@ -936,6 +940,38 @@ struct nfs4_fs_locations_res { struct nfs4_sequence_res seq_res; }; +struct nfs4_secinfo_oid { + unsigned int len; + char data[GSS_OID_MAX_LEN]; +}; + +struct nfs4_secinfo_gss { + struct nfs4_secinfo_oid sec_oid4; + unsigned int qop4; + unsigned int service; +}; + +struct nfs4_secinfo_flavor { + unsigned int flavor; + struct nfs4_secinfo_gss gss; +}; + +struct nfs4_secinfo_flavors { + unsigned int num_flavors; + struct nfs4_secinfo_flavor flavors[0]; +}; + +struct nfs4_secinfo_arg { + const struct nfs_fh *dir_fh; + const struct qstr *name; + struct nfs4_sequence_args seq_args; +}; + +struct nfs4_secinfo_res { + struct nfs4_secinfo_flavors *flavors; + struct nfs4_sequence_res seq_res; +}; + #endif /* CONFIG_NFS_V4 */ struct nfstime4 { @@ -1118,6 +1154,7 @@ struct nfs_rpc_ops { struct iattr *iattr); int (*init_client) (struct nfs_client *, const struct rpc_timeout *, const char *, rpc_authflavor_t, int); + int (*secinfo)(struct inode *, const struct qstr *, struct nfs4_secinfo_flavors *); }; /* -- cgit v1.2.3 From 7ebb931598cd95cccea10d4bc4c0123a464ea565 Mon Sep 17 00:00:00 2001 From: Bryan Schumaker Date: Thu, 24 Mar 2011 17:12:30 +0000 Subject: NFS: use secinfo when crossing mountpoints A submount may use different security than the parent mount does. We should figure out what sec flavor the submount uses at mount time. Signed-off-by: Bryan Schumaker Signed-off-by: Trond Myklebust --- include/linux/nfs_xdr.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 3f32bf175840..fa1ba78ca2c8 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -82,6 +82,7 @@ struct nfs_fattr { #define NFS_ATTR_FATTR_CHANGE (1U << 17) #define NFS_ATTR_FATTR_PRECHANGE (1U << 18) #define NFS_ATTR_FATTR_V4_REFERRAL (1U << 19) /* NFSv4 referral */ +#define NFS_ATTR_FATTR_MOUNTPOINT (1U << 20) /* Treat as mountpoint */ #define NFS_ATTR_FATTR (NFS_ATTR_FATTR_TYPE \ | NFS_ATTR_FATTR_MODE \ -- cgit v1.2.3 From 8f70e95f9f4159184f557a1db60c909d7c1bd2e3 Mon Sep 17 00:00:00 2001 From: Bryan Schumaker Date: Thu, 24 Mar 2011 17:12:31 +0000 Subject: NFS: Determine initial mount security When sec= is not presented as a mount option, we should attempt to determine what security flavor the server is using. Signed-off-by: Bryan Schumaker Signed-off-by: Trond Myklebust --- include/linux/sunrpc/gss_api.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/sunrpc/gss_api.h b/include/linux/sunrpc/gss_api.h index 5d8048beb051..332da61cf8b7 100644 --- a/include/linux/sunrpc/gss_api.h +++ b/include/linux/sunrpc/gss_api.h @@ -126,6 +126,9 @@ struct gss_api_mech *gss_mech_get_by_name(const char *); /* Similar, but get by pseudoflavor. */ struct gss_api_mech *gss_mech_get_by_pseudoflavor(u32); +/* Fill in an array with a list of supported pseudoflavors */ +int gss_mech_list_pseudoflavors(u32 *); + /* Just increments the mechanism's reference count and returns its input: */ struct gss_api_mech * gss_mech_get(struct gss_api_mech *); -- cgit v1.2.3 From 35124a0994fc02545b14b9fa3aad000b3331f1c0 Mon Sep 17 00:00:00 2001 From: Weston Andros Adamson Date: Thu, 24 Mar 2011 16:48:21 -0400 Subject: Cleanup XDR parsing for LAYOUTGET, GETDEVICEINFO changes LAYOUTGET and GETDEVICEINFO XDR parsing to: - not use vmap, which doesn't work on incoherent archs - use xdr_stream parsing for all xdr Signed-off-by: Weston Andros Adamson Signed-off-by: Trond Myklebust --- include/linux/nfs_xdr.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 84f3585c5728..a6e21b10f43d 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -190,8 +190,9 @@ struct nfs4_get_lease_time_res { #define PNFS_LAYOUT_MAXSIZE 4096 struct nfs4_layoutdriver_data { + struct page **pages; + __u32 pglen; __u32 len; - void *buf; }; struct pnfs_layout_range { @@ -209,6 +210,7 @@ struct nfs4_layoutget_args { struct nfs_open_context *ctx; struct nfs4_sequence_args seq_args; nfs4_stateid stateid; + struct nfs4_layoutdriver_data layout; }; struct nfs4_layoutget_res { @@ -216,8 +218,8 @@ struct nfs4_layoutget_res { struct pnfs_layout_range range; __u32 type; nfs4_stateid stateid; - struct nfs4_layoutdriver_data layout; struct nfs4_sequence_res seq_res; + struct nfs4_layoutdriver_data *layoutp; }; struct nfs4_layoutget { -- cgit v1.2.3 From b2b755b5f10eb32fbdc73a9907c07006b17f714b Mon Sep 17 00:00:00 2001 From: David Rientjes Date: Thu, 24 Mar 2011 15:18:15 -0700 Subject: lib, arch: add filter argument to show_mem and fix private implementations Commit ddd588b5dd55 ("oom: suppress nodes that are not allowed from meminfo on oom kill") moved lib/show_mem.o out of lib/lib.a, which resulted in build warnings on all architectures that implement their own versions of show_mem(): lib/lib.a(show_mem.o): In function `show_mem': show_mem.c:(.text+0x1f4): multiple definition of `show_mem' arch/sparc/mm/built-in.o:(.text+0xd70): first defined here The fix is to remove __show_mem() and add its argument to show_mem() in all implementations to prevent this breakage. Architectures that implement their own show_mem() actually don't do anything with the argument yet, but they could be made to filter nodes that aren't allowed in the current context in the future just like the generic implementation. Reported-by: Stephen Rothwell Reported-by: James Bottomley Suggested-by: Andrew Morton Signed-off-by: David Rientjes Signed-off-by: Linus Torvalds --- include/linux/mm.h | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index f9535b2c9558..7606d7db96c9 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -861,7 +861,7 @@ extern void pagefault_out_of_memory(void); #define offset_in_page(p) ((unsigned long)(p) & ~PAGE_MASK) /* - * Flags passed to __show_mem() and __show_free_areas() to suppress output in + * Flags passed to show_mem() and __show_free_areas() to suppress output in * various contexts. */ #define SHOW_MEM_FILTER_NODES (0x0001u) /* filter disallowed nodes */ @@ -1360,8 +1360,7 @@ extern void setup_per_zone_wmarks(void); extern void calculate_zone_inactive_ratio(struct zone *zone); extern void mem_init(void); extern void __init mmap_init(void); -extern void show_mem(void); -extern void __show_mem(unsigned int flags); +extern void show_mem(unsigned int flags); extern void si_meminfo(struct sysinfo * val); extern void si_meminfo_node(struct sysinfo *val, int nid); extern int after_bootmem; -- cgit v1.2.3 From 250df6ed274d767da844a5d9f05720b804240197 Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Tue, 22 Mar 2011 22:23:36 +1100 Subject: fs: protect inode->i_state with inode->i_lock Protect inode state transitions and validity checks with the inode->i_lock. This enables us to make inode state transitions independently of the inode_lock and is the first step to peeling away the inode_lock from the code. This requires that __iget() is done atomically with i_state checks during list traversals so that we don't race with another thread marking the inode I_FREEING between the state check and grabbing the reference. Also remove the unlock_new_inode() memory barrier optimisation required to avoid taking the inode_lock when clearing I_NEW. Simplify the code by simply taking the inode->i_lock around the state change and wakeup. Because the wakeup is no longer tricky, remove the wake_up_inode() function and open code the wakeup where necessary. Signed-off-by: Dave Chinner Signed-off-by: Al Viro --- include/linux/fs.h | 2 +- include/linux/quotaops.h | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index 4dda076c24a1..ed6fdcc1484c 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1647,7 +1647,7 @@ struct super_operations { }; /* - * Inode state bits. Protected by inode_lock. + * Inode state bits. Protected by inode->i_lock * * Three bits determine the dirty state of the inode, I_DIRTY_SYNC, * I_DIRTY_DATASYNC and I_DIRTY_PAGES. diff --git a/include/linux/quotaops.h b/include/linux/quotaops.h index eb354f6f26b3..26f9e3612e0f 100644 --- a/include/linux/quotaops.h +++ b/include/linux/quotaops.h @@ -277,7 +277,7 @@ static inline int dquot_alloc_space(struct inode *inode, qsize_t nr) /* * Mark inode fully dirty. Since we are allocating blocks, inode * would become fully dirty soon anyway and it reportedly - * reduces inode_lock contention. + * reduces lock contention. */ mark_inode_dirty(inode); } -- cgit v1.2.3 From a66979abad090b2765a6c6790c9fdeab996833f2 Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Tue, 22 Mar 2011 22:23:41 +1100 Subject: fs: move i_wb_list out from under inode_lock Protect the inode writeback list with a new global lock inode_wb_list_lock and use it to protect the list manipulations and traversals. This lock replaces the inode_lock as the inodes on the list can be validity checked while holding the inode->i_lock and hence the inode_lock is no longer needed to protect the list. Signed-off-by: Dave Chinner Signed-off-by: Al Viro --- include/linux/writeback.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/writeback.h b/include/linux/writeback.h index 0ead399e08b5..3f5fee718329 100644 --- a/include/linux/writeback.h +++ b/include/linux/writeback.h @@ -10,6 +10,7 @@ struct backing_dev_info; extern spinlock_t inode_lock; +extern spinlock_t inode_wb_list_lock; /* * fs/fs-writeback.c -- cgit v1.2.3 From 67a23c494621ff1d5431c3bc320947865b224625 Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Tue, 22 Mar 2011 22:23:42 +1100 Subject: fs: rename inode_lock to inode_hash_lock All that remains of the inode_lock is protecting the inode hash list manipulation and traversals. Rename the inode_lock to inode_hash_lock to reflect it's actual function. Signed-off-by: Dave Chinner Signed-off-by: Al Viro --- include/linux/writeback.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/writeback.h b/include/linux/writeback.h index 3f5fee718329..17e7ccc322a5 100644 --- a/include/linux/writeback.h +++ b/include/linux/writeback.h @@ -9,7 +9,6 @@ struct backing_dev_info; -extern spinlock_t inode_lock; extern spinlock_t inode_wb_list_lock; /* -- cgit v1.2.3 From 42051e8a7bce76ebd3cd201704ee2427120636e1 Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Mon, 14 Mar 2011 09:52:33 +0100 Subject: mmc: tmio: convert the SDHI MMC driver from MFD to a platform driver On sh-mobile platforms the SDHI driver was using the tmio_mmc SD/SDIO MFD cell driver. Now that the tmio_mmc driver has been split into a core and a separate MFD glue, we can support SDHI natively without the need to emulate an MFD controller. This also allows to support systems with an on-SoC SDHI controller and a separate MFD with a TMIO core. Signed-off-by: Guennadi Liakhovetski Acked-by: Paul Mundt Signed-off-by: Chris Ball --- include/linux/mfd/sh_mobile_sdhi.h | 19 +++++-------------- include/linux/mmc/sh_mobile_sdhi.h | 16 ++++++++++++++++ 2 files changed, 21 insertions(+), 14 deletions(-) create mode 100644 include/linux/mmc/sh_mobile_sdhi.h (limited to 'include/linux') diff --git a/include/linux/mfd/sh_mobile_sdhi.h b/include/linux/mfd/sh_mobile_sdhi.h index c981b959760f..10af7f901ebe 100644 --- a/include/linux/mfd/sh_mobile_sdhi.h +++ b/include/linux/mfd/sh_mobile_sdhi.h @@ -1,16 +1,7 @@ -#ifndef __SH_MOBILE_SDHI_H__ -#define __SH_MOBILE_SDHI_H__ +#ifndef MFD_SH_MOBILE_SDHI_H +#define MFD_SH_MOBILE_SDHI_H -#include +/* Compatibility header - will disappear once all platforms are converted */ +#include -struct sh_mobile_sdhi_info { - int dma_slave_tx; - int dma_slave_rx; - unsigned long tmio_flags; - unsigned long tmio_caps; - u32 tmio_ocr_mask; /* available MMC voltages */ - void (*set_pwr)(struct platform_device *pdev, int state); - int (*get_cd)(struct platform_device *pdev); -}; - -#endif /* __SH_MOBILE_SDHI_H__ */ +#endif /* MFD_SH_MOBILE_SDHI_H */ diff --git a/include/linux/mmc/sh_mobile_sdhi.h b/include/linux/mmc/sh_mobile_sdhi.h new file mode 100644 index 000000000000..c981b959760f --- /dev/null +++ b/include/linux/mmc/sh_mobile_sdhi.h @@ -0,0 +1,16 @@ +#ifndef __SH_MOBILE_SDHI_H__ +#define __SH_MOBILE_SDHI_H__ + +#include + +struct sh_mobile_sdhi_info { + int dma_slave_tx; + int dma_slave_rx; + unsigned long tmio_flags; + unsigned long tmio_caps; + u32 tmio_ocr_mask; /* available MMC voltages */ + void (*set_pwr)(struct platform_device *pdev, int state); + int (*get_cd)(struct platform_device *pdev); +}; + +#endif /* __SH_MOBILE_SDHI_H__ */ -- cgit v1.2.3 From 52c6182a47fa66ad5f2647a831efa99c05b0a54e Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Wed, 9 Mar 2011 11:33:35 +0100 Subject: mfd: remove now redundant sh_mobile_sdhi.h header Signed-off-by: Guennadi Liakhovetski Acked-by: Paul Mundt Acked-by: Samuel Ortiz Signed-off-by: Chris Ball --- include/linux/mfd/sh_mobile_sdhi.h | 7 ------- 1 file changed, 7 deletions(-) delete mode 100644 include/linux/mfd/sh_mobile_sdhi.h (limited to 'include/linux') diff --git a/include/linux/mfd/sh_mobile_sdhi.h b/include/linux/mfd/sh_mobile_sdhi.h deleted file mode 100644 index 10af7f901ebe..000000000000 --- a/include/linux/mfd/sh_mobile_sdhi.h +++ /dev/null @@ -1,7 +0,0 @@ -#ifndef MFD_SH_MOBILE_SDHI_H -#define MFD_SH_MOBILE_SDHI_H - -/* Compatibility header - will disappear once all platforms are converted */ -#include - -#endif /* MFD_SH_MOBILE_SDHI_H */ -- cgit v1.2.3 From ab7798ffcf98b11a9525cf65bacdae3fd58d357f Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Fri, 25 Mar 2011 16:48:50 +0100 Subject: genirq: Expand generic show_interrupts() Some archs want to print extra information for certain irq_chips which is per irq and not per chip. Allow them to provide a chip callback to print the chip name and the extra information. PowerPC wants to print the LEVEL/EDGE type information. Make it configurable. Signed-off-by: Thomas Gleixner --- include/linux/irq.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index 1d3577f30d45..5d876c9b3a3d 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -28,6 +28,7 @@ #include #include +struct seq_file; struct irq_desc; struct irq_data; typedef void (*irq_flow_handler_t)(unsigned int irq, @@ -270,6 +271,7 @@ static inline bool irqd_can_move_in_process_context(struct irq_data *d) * @irq_set_wake: enable/disable power-management wake-on of an IRQ * @irq_bus_lock: function to lock access to slow bus (i2c) chips * @irq_bus_sync_unlock:function to sync and unlock slow bus (i2c) chips + * @irq_print_chip: optional to print special chip info in show_interrupts * @flags: chip specific flags * * @release: release function solely used by UML @@ -317,6 +319,8 @@ struct irq_chip { void (*irq_bus_lock)(struct irq_data *data); void (*irq_bus_sync_unlock)(struct irq_data *data); + void (*irq_print_chip)(struct irq_data *data, struct seq_file *p); + unsigned long flags; /* Currently used only by UML, might disappear one day.*/ -- cgit v1.2.3 From 7a32b589a9c856493bccb02db55047edc04eee7b Mon Sep 17 00:00:00 2001 From: MyungJoo Ham Date: Fri, 11 Mar 2011 10:13:59 +0900 Subject: Regulator: add suspend-finish API for regulator core. The regulator core had suspend-prepare that turns off the regulators when entering a system-wide suspend. However, it did not have suspend-finish that pairs with suspend-prepare and the regulator core has assumed that the regulator devices and their drivers support autonomous recover at resume. This patch adds regulator_suspend_finish that pairs with the previously-existed regulator_suspend_prepare. The function regulator_suspend_finish turns on the regulators that have always_on set or positive use_count so that we can reset the regulator states appropriately at resume. In regulator_suspend_finish, if has_full_constraints, it disables unnecessary regulators. Signed-off-by: MyungJoo Ham Signed-off-by: Kyungmin Park Acked-by: Mark Brown -- Updates v3 comments corrected (Thanks to Igor) v2 disable unnecessary regulators (Thanks to Mark) Signed-off-by: Liam Girdwood --- include/linux/regulator/machine.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/regulator/machine.h b/include/linux/regulator/machine.h index 761c745b9c24..c4c4fc45f856 100644 --- a/include/linux/regulator/machine.h +++ b/include/linux/regulator/machine.h @@ -186,6 +186,7 @@ struct regulator_init_data { }; int regulator_suspend_prepare(suspend_state_t state); +int regulator_suspend_finish(void); #ifdef CONFIG_REGULATOR void regulator_has_full_constraints(void); -- cgit v1.2.3 From ea05ef31f2aa98b25d14222300dc9c1d1eb59e41 Mon Sep 17 00:00:00 2001 From: Bengt Jonsson Date: Thu, 10 Mar 2011 14:43:31 +0100 Subject: regulator: add support for USB voltage regulator Signed-off-by: Bengt Jonsson Signed-off-by: Linus Walleij Acked-by: Mark Brown Signed-off-by: Liam Girdwood --- include/linux/regulator/ab8500.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/regulator/ab8500.h b/include/linux/regulator/ab8500.h index 6a210f1511fc..d4eacdef2017 100644 --- a/include/linux/regulator/ab8500.h +++ b/include/linux/regulator/ab8500.h @@ -17,6 +17,7 @@ enum ab8500_regulator_id { AB8500_LDO_AUX3, AB8500_LDO_INTCORE, AB8500_LDO_TVOUT, + AB8500_LDO_USB, AB8500_LDO_AUDIO, AB8500_LDO_ANAMIC1, AB8500_LDO_ANAMIC2, -- cgit v1.2.3 From 79568b941277b5986a8a7f0fb8578b2ccfc3e87e Mon Sep 17 00:00:00 2001 From: Bengt Jonsson Date: Fri, 11 Mar 2011 11:54:46 +0100 Subject: regulator: initialization for ab8500 regulators The regulators on the AB8500 have a lot of custom hardware control settings pertaining to 8 external signals, settings which are board-specific and need be provided from the platform at startup. Initialization added for regulators Vana, VextSupply1, VextSupply2, VextSupply3, Vaux1, Vaux2, Vaux3, VTVout, Vintcore12, Vaudio, Vdmic, Vamic1, Vamic2, VrefDDR. Signed-off-by: Bengt Jonsson Reviewed-by: Rickard Andersson Reviewed-by: Jonas Aberg Signed-off-by: Linus Walleij Acked-by: Mark Brown Signed-off-by: Liam Girdwood --- include/linux/mfd/ab8500.h | 6 +++++ include/linux/regulator/ab8500.h | 50 ++++++++++++++++++++++++++++++++++++++-- 2 files changed, 54 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/ab8500.h b/include/linux/mfd/ab8500.h index 56f8dea72152..6e4f77ef4d20 100644 --- a/include/linux/mfd/ab8500.h +++ b/include/linux/mfd/ab8500.h @@ -139,17 +139,23 @@ struct ab8500 { u8 oldmask[AB8500_NUM_IRQ_REGS]; }; +struct regulator_reg_init; struct regulator_init_data; /** * struct ab8500_platform_data - AB8500 platform data * @irq_base: start of AB8500 IRQs, AB8500_NR_IRQS will be used * @init: board-specific initialization after detection of ab8500 + * @num_regulator_reg_init: number of regulator init registers + * @regulator_reg_init: regulator init registers + * @num_regulator: number of regulators * @regulator: machine-specific constraints for regulators */ struct ab8500_platform_data { int irq_base; void (*init) (struct ab8500 *); + int num_regulator_reg_init; + struct ab8500_regulator_reg_init *regulator_reg_init; int num_regulator; struct regulator_init_data *regulator; }; diff --git a/include/linux/regulator/ab8500.h b/include/linux/regulator/ab8500.h index d4eacdef2017..76579f964a29 100644 --- a/include/linux/regulator/ab8500.h +++ b/include/linux/regulator/ab8500.h @@ -3,8 +3,8 @@ * * License Terms: GNU General Public License v2 * - * Author: Sundar Iyer for ST-Ericsson - * + * Authors: Sundar Iyer for ST-Ericsson + * Bengt Jonsson for ST-Ericsson */ #ifndef __LINUX_MFD_AB8500_REGULATOR_H @@ -25,4 +25,50 @@ enum ab8500_regulator_id { AB8500_LDO_ANA, AB8500_NUM_REGULATORS, }; + +/* AB8500 register initialization */ +struct ab8500_regulator_reg_init { + int id; + u8 value; +}; + +#define INIT_REGULATOR_REGISTER(_id, _value) \ + { \ + .id = _id, \ + .value = _value, \ + } + +/* AB8500 registers */ +enum ab8500_regulator_reg { + AB8500_REGUREQUESTCTRL2, + AB8500_REGUREQUESTCTRL3, + AB8500_REGUREQUESTCTRL4, + AB8500_REGUSYSCLKREQ1HPVALID1, + AB8500_REGUSYSCLKREQ1HPVALID2, + AB8500_REGUHWHPREQ1VALID1, + AB8500_REGUHWHPREQ1VALID2, + AB8500_REGUHWHPREQ2VALID1, + AB8500_REGUHWHPREQ2VALID2, + AB8500_REGUSWHPREQVALID1, + AB8500_REGUSWHPREQVALID2, + AB8500_REGUSYSCLKREQVALID1, + AB8500_REGUSYSCLKREQVALID2, + AB8500_REGUMISC1, + AB8500_VAUDIOSUPPLY, + AB8500_REGUCTRL1VAMIC, + AB8500_VPLLVANAREGU, + AB8500_VREFDDR, + AB8500_EXTSUPPLYREGU, + AB8500_VAUX12REGU, + AB8500_VRF1VAUX3REGU, + AB8500_VAUX1SEL, + AB8500_VAUX2SEL, + AB8500_VRF1VAUX3SEL, + AB8500_REGUCTRL2SPARE, + AB8500_REGUCTRLDISCH, + AB8500_REGUCTRLDISCH2, + AB8500_VSMPS1SEL1, + AB8500_NUM_REGULATOR_REGISTERS, +}; + #endif -- cgit v1.2.3 From 77af1b2641faf45788a0d480db94082ebee931dc Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Thu, 17 Mar 2011 13:24:36 +0100 Subject: regulator: add set_voltage_time_sel infrastructure This makes it possible to set the stabilization time for voltage regulators in the same manner as enable_time(). The interface only supports regulators that implements fixed selectors. Cc: Bengt Jonsson Signed-off-by: Linus Walleij Acked-by: Mark Brown Signed-off-by: Liam Girdwood --- include/linux/regulator/driver.h | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h index b8ed16a33c47..6c433b89c80d 100644 --- a/include/linux/regulator/driver.h +++ b/include/linux/regulator/driver.h @@ -63,7 +63,11 @@ enum regulator_status { * when running with the specified parameters. * * @enable_time: Time taken for the regulator voltage output voltage to - * stabalise after being enabled, in microseconds. + * stabilise after being enabled, in microseconds. + * @set_voltage_time_sel: Time taken for the regulator voltage output voltage + * to stabilise after being set to a new value, in microseconds. + * The function provides the from and to voltage selector, the + * function should return the worst case. * * @set_suspend_voltage: Set the voltage for the regulator when the system * is suspended. @@ -103,8 +107,11 @@ struct regulator_ops { int (*set_mode) (struct regulator_dev *, unsigned int mode); unsigned int (*get_mode) (struct regulator_dev *); - /* Time taken to enable the regulator */ + /* Time taken to enable or set voltage on the regulator */ int (*enable_time) (struct regulator_dev *); + int (*set_voltage_time_sel) (struct regulator_dev *, + unsigned int old_selector, + unsigned int new_selector); /* report regulator status ... most other accessors report * control inputs, this reports results of combining inputs -- cgit v1.2.3 From 88cd222b259d62148ab8c82398498b1a01314476 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Thu, 17 Mar 2011 13:24:52 +0100 Subject: regulator: provide consumer interface for fall/rise time This exposes the functionality for rise/fall fime when setting voltage to the consumers. Cc: Bengt Jonsson Signed-off-by: Linus Walleij Acked-by: Mark Brown Signed-off-by: Liam Girdwood --- include/linux/regulator/consumer.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/regulator/consumer.h b/include/linux/regulator/consumer.h index 7954f6bd7edb..9e87c1cb7270 100644 --- a/include/linux/regulator/consumer.h +++ b/include/linux/regulator/consumer.h @@ -153,6 +153,8 @@ int regulator_list_voltage(struct regulator *regulator, unsigned selector); int regulator_is_supported_voltage(struct regulator *regulator, int min_uV, int max_uV); int regulator_set_voltage(struct regulator *regulator, int min_uV, int max_uV); +int regulator_set_voltage_time(struct regulator *regulator, + int old_uV, int new_uV); int regulator_get_voltage(struct regulator *regulator); int regulator_sync_voltage(struct regulator *regulator); int regulator_set_current_limit(struct regulator *regulator, -- cgit v1.2.3 From cba179aec779b364a683906b99e23014c7652e8e Mon Sep 17 00:00:00 2001 From: Simon Horman Date: Thu, 24 Mar 2011 09:48:36 +0100 Subject: mmc: tmio_mmc: Move some defines into a shared header Also add TMIO_BBS. This allows these defines to also be used by zboot. Cc: Guennadi Liakhovetski Signed-off-by: Simon Horman Signed-off-by: Guennadi Liakhovetski Acked-by: Paul Mundt Signed-off-by: Chris Ball --- include/linux/mmc/tmio.h | 63 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 include/linux/mmc/tmio.h (limited to 'include/linux') diff --git a/include/linux/mmc/tmio.h b/include/linux/mmc/tmio.h new file mode 100644 index 000000000000..19490b942db0 --- /dev/null +++ b/include/linux/mmc/tmio.h @@ -0,0 +1,63 @@ +/* + * include/linux/mmc/tmio.h + * + * Copyright (C) 2007 Ian Molton + * Copyright (C) 2004 Ian Molton + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * Driver for the MMC / SD / SDIO cell found in: + * + * TC6393XB TC6391XB TC6387XB T7L66XB ASIC3 + */ +#ifndef _LINUX_MMC_TMIO_H_ +#define _LINUX_MMC_TMIO_H_ + +#define CTL_SD_CMD 0x00 +#define CTL_ARG_REG 0x04 +#define CTL_STOP_INTERNAL_ACTION 0x08 +#define CTL_XFER_BLK_COUNT 0xa +#define CTL_RESPONSE 0x0c +#define CTL_STATUS 0x1c +#define CTL_IRQ_MASK 0x20 +#define CTL_SD_CARD_CLK_CTL 0x24 +#define CTL_SD_XFER_LEN 0x26 +#define CTL_SD_MEM_CARD_OPT 0x28 +#define CTL_SD_ERROR_DETAIL_STATUS 0x2c +#define CTL_SD_DATA_PORT 0x30 +#define CTL_TRANSACTION_CTL 0x34 +#define CTL_SDIO_STATUS 0x36 +#define CTL_SDIO_IRQ_MASK 0x38 +#define CTL_RESET_SD 0xe0 +#define CTL_SDIO_REGS 0x100 +#define CTL_CLK_AND_WAIT_CTL 0x138 +#define CTL_RESET_SDIO 0x1e0 + +/* Definitions for values the CTRL_STATUS register can take. */ +#define TMIO_STAT_CMDRESPEND 0x00000001 +#define TMIO_STAT_DATAEND 0x00000004 +#define TMIO_STAT_CARD_REMOVE 0x00000008 +#define TMIO_STAT_CARD_INSERT 0x00000010 +#define TMIO_STAT_SIGSTATE 0x00000020 +#define TMIO_STAT_WRPROTECT 0x00000080 +#define TMIO_STAT_CARD_REMOVE_A 0x00000100 +#define TMIO_STAT_CARD_INSERT_A 0x00000200 +#define TMIO_STAT_SIGSTATE_A 0x00000400 +#define TMIO_STAT_CMD_IDX_ERR 0x00010000 +#define TMIO_STAT_CRCFAIL 0x00020000 +#define TMIO_STAT_STOPBIT_ERR 0x00040000 +#define TMIO_STAT_DATATIMEOUT 0x00080000 +#define TMIO_STAT_RXOVERFLOW 0x00100000 +#define TMIO_STAT_TXUNDERRUN 0x00200000 +#define TMIO_STAT_CMDTIMEOUT 0x00400000 +#define TMIO_STAT_RXRDY 0x01000000 +#define TMIO_STAT_TXRQ 0x02000000 +#define TMIO_STAT_ILL_FUNC 0x20000000 +#define TMIO_STAT_CMD_BUSY 0x40000000 +#define TMIO_STAT_ILL_ACCESS 0x80000000 + +#define TMIO_BBS 512 /* Boot block size */ + +#endif /* _LINUX_MMC_TMIO_H_ */ -- cgit v1.2.3 From fa1df691688f34cbcd5bf77bd084bbe47e9d6bfe Mon Sep 17 00:00:00 2001 From: Andres Salomon Date: Mon, 21 Mar 2011 19:19:35 -0700 Subject: mfd: Add mfd_clone_cell(), convert cs5535-mfd/olpc-xo1 to it Replace mfd_shared_platform_driver_register with mfd_clone_cell. The former was called by an mfd client, and registered both a platform driver and device. The latter is called by an mfd driver, and registers only a platform device. The downside of this is that mfd drivers need to be modified whenever new clients are added that share a cell; the upside is that it fits Linux's driver model better. It's also simpler. This also converts cs5535-mfd/olpc-xo1 from the old API. cs5535-mfd now creates the olpc-xo1-{acpi,pms} devices, while olpc-xo1 binds to them via platform drivers. Signed-off-by: Andres Salomon Signed-off-by: Samuel Ortiz --- include/linux/mfd/core.h | 27 ++++++++++++++++++--------- 1 file changed, 18 insertions(+), 9 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/core.h b/include/linux/mfd/core.h index 1408bf8eed5f..ad1b19aa6508 100644 --- a/include/linux/mfd/core.h +++ b/include/linux/mfd/core.h @@ -62,6 +62,24 @@ struct mfd_cell { extern int mfd_cell_enable(struct platform_device *pdev); extern int mfd_cell_disable(struct platform_device *pdev); +/* + * "Clone" multiple platform devices for a single cell. This is to be used + * for devices that have multiple users of a cell. For example, if an mfd + * driver wants the cell "foo" to be used by a GPIO driver, an MTD driver, + * and a platform driver, the following bit of code would be use after first + * calling mfd_add_devices(): + * + * const char *fclones[] = { "foo-gpio", "foo-mtd" }; + * err = mfd_clone_cells("foo", fclones, ARRAY_SIZE(fclones)); + * + * Each driver (MTD, GPIO, and platform driver) would then register + * platform_drivers for "foo-mtd", "foo-gpio", and "foo", respectively. + * The cell's .enable/.disable hooks should be used to deal with hardware + * resource contention. + */ +extern int mfd_clone_cell(const char *cell, const char **clones, + size_t n_clones); + /* * Given a platform device that's been created by mfd_add_devices(), fetch * the mfd_cell that created it. @@ -87,13 +105,4 @@ extern int mfd_add_devices(struct device *parent, int id, extern void mfd_remove_devices(struct device *parent); -/* - * For MFD drivers with clients sharing access to resources, these create - * multiple platform devices per cell. Contention handling must still be - * handled via drivers (ie, with enable/disable hooks). - */ -extern int mfd_shared_platform_driver_register(struct platform_driver *drv, - const char *cellname); -extern void mfd_shared_platform_driver_unregister(struct platform_driver *drv); - #endif -- cgit v1.2.3 From 8de6bc7f6ba58dd717e4a65e3bf4a746116fb874 Mon Sep 17 00:00:00 2001 From: MyungJoo Ham Date: Thu, 24 Mar 2011 15:54:45 +0900 Subject: mfd: Add MAX8997/8966 IRQ control This patch enables IRQ handling for MAX8997/8966 chips. Please note that Fuel-Gauge-related IRQs are not implemented in this initial release. The fuel gauge module in MAX8997 is identical to MAX17042, which is already in Linux kernel. In order to use the already-existing MAX17042 driver for fuel gauge module in MAX8997, the main interrupt handler of MAX8997 should relay related interrupts to MAX17042 driver. However, in order to do this, we need to modify MAX17042 driver as well because MAX17042 driver does not have any interrupt handlers for now. We are not going to implement this in this initial release as it is not crucial in basic operations of MAX8997. Signed-off-by: MyungJoo Ham Signed-off-by: Kyungmin Park Signed-off-by: Samuel Ortiz --- include/linux/mfd/max8997-private.h | 21 +++++++++++++++++++++ include/linux/mfd/max8997.h | 7 +++++-- 2 files changed, 26 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/max8997-private.h b/include/linux/mfd/max8997-private.h index 93a9477e075f..69d1010e2e51 100644 --- a/include/linux/mfd/max8997-private.h +++ b/include/linux/mfd/max8997-private.h @@ -24,6 +24,8 @@ #include +#define MAX8997_REG_INVALID (0xff) + enum max8997_pmic_reg { MAX8997_REG_PMIC_ID0 = 0x00, MAX8997_REG_PMIC_ID1 = 0x01, @@ -313,6 +315,7 @@ enum max8997_irq { #define MAX8997_REG_BUCK2DVS(x) (MAX8997_REG_BUCK2DVS1 + (x) - 1) #define MAX8997_REG_BUCK5DVS(x) (MAX8997_REG_BUCK5DVS1 + (x) - 1) +#define MAX8997_NUM_GPIO 12 struct max8997_dev { struct device *dev; struct i2c_client *i2c; /* 0xcc / PMIC, Battery Control, and FLASH */ @@ -324,11 +327,19 @@ struct max8997_dev { int type; struct platform_device *battery; /* battery control (not fuel gauge) */ + int irq; + int ono; + int irq_base; bool wakeup; + struct mutex irqlock; + int irq_masks_cur[MAX8997_IRQ_GROUP_NR]; + int irq_masks_cache[MAX8997_IRQ_GROUP_NR]; /* For hibernation */ u8 reg_dump[MAX8997_REG_PMIC_END + MAX8997_MUIC_REG_END + MAX8997_HAPTIC_REG_END]; + + bool gpio_status[MAX8997_NUM_GPIO]; }; enum max8997_types { @@ -336,6 +347,10 @@ enum max8997_types { TYPE_MAX8966, }; +extern int max8997_irq_init(struct max8997_dev *max8997); +extern void max8997_irq_exit(struct max8997_dev *max8997); +extern int max8997_irq_resume(struct max8997_dev *max8997); + extern int max8997_read_reg(struct i2c_client *i2c, u8 reg, u8 *dest); extern int max8997_bulk_read(struct i2c_client *i2c, u8 reg, int count, u8 *buf); @@ -344,4 +359,10 @@ extern int max8997_bulk_write(struct i2c_client *i2c, u8 reg, int count, u8 *buf); extern int max8997_update_reg(struct i2c_client *i2c, u8 reg, u8 val, u8 mask); +#define MAX8997_GPIO_INT_BOTH (0x3 << 4) +#define MAX8997_GPIO_INT_RISE (0x2 << 4) +#define MAX8997_GPIO_INT_FALL (0x1 << 4) + +#define MAX8997_GPIO_INT_MASK (0x3 << 4) +#define MAX8997_GPIO_DATA_MASK (0x1 << 2) #endif /* __LINUX_MFD_MAX8997_PRIV_H */ diff --git a/include/linux/mfd/max8997.h b/include/linux/mfd/max8997.h index cb671b3451bf..60931d089422 100644 --- a/include/linux/mfd/max8997.h +++ b/include/linux/mfd/max8997.h @@ -78,8 +78,11 @@ struct max8997_regulator_data { }; struct max8997_platform_data { - bool wakeup; - /* IRQ: Not implemented */ + /* IRQ */ + int irq_base; + int ono; + int wakeup; + /* ---- PMIC ---- */ struct max8997_regulator_data *regulators; int num_regulators; -- cgit v1.2.3 From 801a0e9ae36e9b487092e31699d28c0b9a21ad52 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Sun, 27 Mar 2011 11:02:49 +0200 Subject: genirq: Add irq disabled flag to irq_data state Some irq_chip implementation require to know the disabled state of the interrupt in certain callbacks. Add a state flag and accessor to irq_data. Signed-off-by: Thomas Gleixner --- include/linux/irq.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index 5d876c9b3a3d..8649b0fb9daf 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -174,6 +174,8 @@ struct irq_data { * from suspend * IRDQ_MOVE_PCNTXT - Interrupt can be moved in process * context + * IRQD_IRQ_DISABLED - Some chip function need to know the + * disabled state. */ enum { IRQD_TRIGGER_MASK = 0xf, @@ -184,6 +186,7 @@ enum { IRQD_LEVEL = (1 << 13), IRQD_WAKEUP_STATE = (1 << 14), IRQD_MOVE_PCNTXT = (1 << 15), + IRQD_IRQ_DISABLED = (1 << 16), }; static inline bool irqd_is_setaffinity_pending(struct irq_data *d) @@ -235,6 +238,11 @@ static inline bool irqd_can_move_in_process_context(struct irq_data *d) return d->state_use_accessors & IRQD_MOVE_PCNTXT; } +static inline bool irqd_irq_disabled(struct irq_data *d) +{ + return d->state_use_accessors & IRQD_IRQ_DISABLED; +} + /** * struct irq_chip - hardware interrupt chip descriptor * -- cgit v1.2.3 From 0fdb4b259ed3e91b687ac26848202f5e7c217e62 Mon Sep 17 00:00:00 2001 From: David Daney Date: Fri, 25 Mar 2011 12:38:49 -0700 Subject: genirq: Add chip hooks for taking CPUs on/off line. [ tglx: Removed the enabled argument as this is now available in irq_data ] Signed-off-by: David Daney Cc: linux-mips@linux-mips.org Cc: ralf@linux-mips.org LKML-Reference: <1301081931-11240-3-git-send-email-ddaney@caviumnetworks.com> Signed-off-by: Thomas Gleixner --- include/linux/irq.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index 8649b0fb9daf..c2a0c1929690 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -279,6 +279,8 @@ static inline bool irqd_irq_disabled(struct irq_data *d) * @irq_set_wake: enable/disable power-management wake-on of an IRQ * @irq_bus_lock: function to lock access to slow bus (i2c) chips * @irq_bus_sync_unlock:function to sync and unlock slow bus (i2c) chips + * @irq_cpu_online: configure an interrupt source for a secondary CPU + * @irq_cpu_offline: un-configure an interrupt source for a secondary CPU * @irq_print_chip: optional to print special chip info in show_interrupts * @flags: chip specific flags * @@ -327,6 +329,9 @@ struct irq_chip { void (*irq_bus_lock)(struct irq_data *data); void (*irq_bus_sync_unlock)(struct irq_data *data); + void (*irq_cpu_online)(struct irq_data *data); + void (*irq_cpu_offline)(struct irq_data *data); + void (*irq_print_chip)(struct irq_data *data, struct seq_file *p); unsigned long flags; @@ -372,6 +377,9 @@ struct irqaction; extern int setup_irq(unsigned int irq, struct irqaction *new); extern void remove_irq(unsigned int irq, struct irqaction *act); +extern void irq_cpu_online(void); +extern void irq_cpu_offline(void); + #ifdef CONFIG_GENERIC_HARDIRQS #if defined(CONFIG_SMP) && defined(CONFIG_GENERIC_PENDING_IRQ) -- cgit v1.2.3 From b3d422329f2e061d66af4f933ef316e50e5edcac Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Sun, 27 Mar 2011 16:05:36 +0200 Subject: genirq: Add chip flag for restricting cpu_on/offline calls Add a flag which indicates that the on/offline callback should only be called on enabled interrupts. Signed-off-by: Thomas Gleixner --- include/linux/irq.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index c2a0c1929690..76e948fa88f8 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -348,11 +348,14 @@ struct irq_chip { * IRQCHIP_SET_TYPE_MASKED: Mask before calling chip.irq_set_type() * IRQCHIP_EOI_IF_HANDLED: Only issue irq_eoi() when irq was handled * IRQCHIP_MASK_ON_SUSPEND: Mask non wake irqs in the suspend path + * IRQCHIP_ONOFFLINE_ENABLED: Only call irq_on/off_line callbacks + * when irq enabled */ enum { IRQCHIP_SET_TYPE_MASKED = (1 << 0), IRQCHIP_EOI_IF_HANDLED = (1 << 1), IRQCHIP_MASK_ON_SUSPEND = (1 << 2), + IRQCHIP_ONOFFLINE_ENABLED = (1 << 3), }; /* This include will go away once we isolated irq_desc usage to core code */ -- cgit v1.2.3 From c2d0c555c22242c3a76e366074c4d83ef9fa3b8c Mon Sep 17 00:00:00 2001 From: David Daney Date: Fri, 25 Mar 2011 12:38:50 -0700 Subject: genirq: Split irq_set_affinity() so it can be called with lock held. The .irq_cpu_online() and .irq_cpu_offline() functions may need to adjust affinity, but they are called with the descriptor lock held. Create __irq_set_affinity_locked() which is called with the lock held. Make irq_set_affinity() just a wrapper that acquires the lock. [ tglx: Changed the argument to irq_data, added a !desc check and moved the !irq_set_affinity check where it belongs ] Signed-off-by: David Daney Cc: linux-mips@linux-mips.org Cc: ralf@linux-mips.org LKML-Reference: <1301081931-11240-4-git-send-email-ddaney@caviumnetworks.com> Signed-off-by: Thomas Gleixner --- include/linux/irq.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index 76e948fa88f8..a10717e1c1f3 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -382,6 +382,7 @@ extern void remove_irq(unsigned int irq, struct irqaction *act); extern void irq_cpu_online(void); extern void irq_cpu_offline(void); +extern int __irq_set_affinity_locked(struct irq_data *data, const struct cpumask *cpumask); #ifdef CONFIG_GENERIC_HARDIRQS -- cgit v1.2.3 From 4d65c520fb4abed970069d18c119cfe85624f46d Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Fri, 25 Mar 2011 14:15:11 -0400 Subject: NFS: Fix a hang in the writeback path Now that the inode scalability patches have been merged, it is no longer safe to call igrab() under the inode->i_lock. Now that we no longer call nfs_clear_request() until the nfs_page is being freed, we know that we are always holding a reference to the nfs_open_context, which again holds a reference to the path, and so the inode cannot be freed until the last nfs_page has been removed from the radix tree and freed. We can therefore skip the igrab()/iput() altogether. Signed-off-by: Trond Myklebust --- include/linux/nfs_page.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/nfs_page.h b/include/linux/nfs_page.h index 8023e4e25133..91af2e49fa3a 100644 --- a/include/linux/nfs_page.h +++ b/include/linux/nfs_page.h @@ -78,7 +78,6 @@ extern struct nfs_page *nfs_create_request(struct nfs_open_context *ctx, struct page *page, unsigned int offset, unsigned int count); -extern void nfs_clear_request(struct nfs_page *req); extern void nfs_release_request(struct nfs_page *req); -- cgit v1.2.3 From 53914b67993c724cec585863755c9ebc8446e83b Mon Sep 17 00:00:00 2001 From: Oliver Hartkopp Date: Tue, 22 Mar 2011 08:27:25 +0000 Subject: can: make struct proto const can_ioctl is the only reason for struct proto to be non-const. script/check-patch.pl suggests struct proto be const. Setting the reference to the common can_ioctl() in all CAN protocols directly removes the need to make the struct proto writable in af_can.c Signed-off-by: Kurt Van Dijck Signed-off-by: Oliver Hartkopp Signed-off-by: David S. Miller --- include/linux/can/core.h | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/can/core.h b/include/linux/can/core.h index 6c507bea275f..6f70a6d3a16e 100644 --- a/include/linux/can/core.h +++ b/include/linux/can/core.h @@ -36,10 +36,10 @@ * @prot: pointer to struct proto structure. */ struct can_proto { - int type; - int protocol; - struct proto_ops *ops; - struct proto *prot; + int type; + int protocol; + const struct proto_ops *ops; + struct proto *prot; }; /* function prototypes for the CAN networklayer core (af_can.c) */ @@ -58,5 +58,6 @@ extern void can_rx_unregister(struct net_device *dev, canid_t can_id, void *data); extern int can_send(struct sk_buff *skb, int loop); +extern int can_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg); #endif /* CAN_CORE_H */ -- cgit v1.2.3 From 673e63c688f43104c73aad8ea4237f7ad41fa14d Mon Sep 17 00:00:00 2001 From: Stanislaw Gruszka Date: Tue, 22 Mar 2011 23:54:49 +0000 Subject: net: fix ethtool->set_flags not intended -EINVAL return value After commit d5dbda23804156ae6f35025ade5307a49d1db6d7 "ethtool: Add support for vlan accleration.", drivers that have NETIF_F_HW_VLAN_TX, and/or NETIF_F_HW_VLAN_RX feature, but do not allow enable/disable vlan acceleration via ethtool set_flags, always return -EINVAL from that function. Fix by returning -EINVAL only if requested features do not match current settings and can not be changed by driver. Change any driver that define ethtool->set_flags to use ethtool_invalid_flags() to avoid similar problems in the future (also on drivers that do not have the problem). Tested with modified (to reproduce this bug) myri10ge driver. Cc: stable@kernel.org # 2.6.37+ Signed-off-by: Stanislaw Gruszka Signed-off-by: David S. Miller --- include/linux/ethtool.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h index ae757bcf1280..c8fcbdd2b0e7 100644 --- a/include/linux/ethtool.h +++ b/include/linux/ethtool.h @@ -680,6 +680,7 @@ int ethtool_op_set_ufo(struct net_device *dev, u32 data); u32 ethtool_op_get_flags(struct net_device *dev); int ethtool_op_set_flags(struct net_device *dev, u32 data, u32 supported); void ethtool_ntuple_flush(struct net_device *dev); +bool ethtool_invalid_flags(struct net_device *dev, u32 data, u32 supported); /** * ðtool_ops - Alter and report network device settings -- cgit v1.2.3 From 0cb3fcd72cc3e6dd88f0e769746d294e5e6bafa9 Mon Sep 17 00:00:00 2001 From: Bibek Basu Date: Wed, 9 Feb 2011 11:02:35 +0530 Subject: gpio: driver for 42 AB8500 GPIO pins To get rid of port expanders, the free GPIOs of ab8500 can be used. There are 42 GPIO pins. Out of which 16 are interrupt capable.This patch implements 16 virtual IRQ mapped to 16 interrupt capable AB8500 GPIOs. Signed-off-by: Bibek Basu Acked-by: Grant Likely [Renamed header file as per MFD structure] Signed-off-by: Linus Walleij --- include/linux/mfd/ab8500.h | 41 +++++++++++++++++++++++++++++++++++++++++ include/linux/mfd/ab8500/gpio.h | 21 +++++++++++++++++++++ 2 files changed, 62 insertions(+) create mode 100644 include/linux/mfd/ab8500/gpio.h (limited to 'include/linux') diff --git a/include/linux/mfd/ab8500.h b/include/linux/mfd/ab8500.h index 6e4f77ef4d20..b31843075198 100644 --- a/include/linux/mfd/ab8500.h +++ b/include/linux/mfd/ab8500.h @@ -74,6 +74,45 @@ #define AB8500_INT_ACC_DETECT_21DB_F 37 #define AB8500_INT_ACC_DETECT_21DB_R 38 #define AB8500_INT_GP_SW_ADC_CONV_END 39 +#define AB8500_INT_ACC_DETECT_1DB_F 33 +#define AB8500_INT_ACC_DETECT_1DB_R 34 +#define AB8500_INT_ACC_DETECT_22DB_F 35 +#define AB8500_INT_ACC_DETECT_22DB_R 36 +#define AB8500_INT_ACC_DETECT_21DB_F 37 +#define AB8500_INT_ACC_DETECT_21DB_R 38 +#define AB8500_INT_GP_SW_ADC_CONV_END 39 +#define AB8500_INT_GPIO6R 40 +#define AB8500_INT_GPIO7R 41 +#define AB8500_INT_GPIO8R 42 +#define AB8500_INT_GPIO9R 43 +#define AB8500_INT_GPIO10R 44 +#define AB8500_INT_GPIO11R 45 +#define AB8500_INT_GPIO12R 46 +#define AB8500_INT_GPIO13R 47 +#define AB8500_INT_GPIO24R 48 +#define AB8500_INT_GPIO25R 49 +#define AB8500_INT_GPIO36R 50 +#define AB8500_INT_GPIO37R 51 +#define AB8500_INT_GPIO38R 52 +#define AB8500_INT_GPIO39R 53 +#define AB8500_INT_GPIO40R 54 +#define AB8500_INT_GPIO41R 55 +#define AB8500_INT_GPIO6F 56 +#define AB8500_INT_GPIO7F 57 +#define AB8500_INT_GPIO8F 58 +#define AB8500_INT_GPIO9F 59 +#define AB8500_INT_GPIO10F 60 +#define AB8500_INT_GPIO11F 61 +#define AB8500_INT_GPIO12F 62 +#define AB8500_INT_GPIO13F 63 +#define AB8500_INT_GPIO24F 64 +#define AB8500_INT_GPIO25F 65 +#define AB8500_INT_GPIO36F 66 +#define AB8500_INT_GPIO37F 67 +#define AB8500_INT_GPIO38F 68 +#define AB8500_INT_GPIO39F 69 +#define AB8500_INT_GPIO40F 70 +#define AB8500_INT_GPIO41F 71 #define AB8500_INT_ADP_SOURCE_ERROR 72 #define AB8500_INT_ADP_SINK_ERROR 73 #define AB8500_INT_ADP_PROBE_PLUG 74 @@ -141,6 +180,7 @@ struct ab8500 { struct regulator_reg_init; struct regulator_init_data; +struct ab8500_gpio_platform_data; /** * struct ab8500_platform_data - AB8500 platform data @@ -158,6 +198,7 @@ struct ab8500_platform_data { struct ab8500_regulator_reg_init *regulator_reg_init; int num_regulator; struct regulator_init_data *regulator; + struct ab8500_gpio_platform_data *gpio; }; extern int __devinit ab8500_init(struct ab8500 *ab8500); diff --git a/include/linux/mfd/ab8500/gpio.h b/include/linux/mfd/ab8500/gpio.h new file mode 100644 index 000000000000..488a8c920a29 --- /dev/null +++ b/include/linux/mfd/ab8500/gpio.h @@ -0,0 +1,21 @@ +/* + * Copyright ST-Ericsson 2010. + * + * Author: Bibek Basu + * Licensed under GPLv2. + */ + +#ifndef _AB8500_GPIO_H +#define _AB8500_GPIO_H + +/* + * Platform data to register a block: only the initial gpio/irq number. + */ + +struct ab8500_gpio_platform_data { + int gpio_base; + u32 irq_base; + u8 config_reg[7]; +}; + +#endif /* _AB8500_GPIO_H */ -- cgit v1.2.3 From 32471f6e1983922473573da62cbee58699574aa4 Mon Sep 17 00:00:00 2001 From: liubo Date: Mon, 21 Mar 2011 08:54:27 +0000 Subject: Btrfs: add datacow flag in inode flag For datacow control, the corresponding inode flags are needed. This is for btrfs use. v1->v2: Change FS_COW_FL to another bit due to conflict with the upstream e2fsprogs Signed-off-by: Liu Bo Signed-off-by: Chris Mason --- include/linux/fs.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index e38b50a4b9d2..de9dd8119b71 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -364,6 +364,8 @@ struct inodes_stat_t { #define FS_TOPDIR_FL 0x00020000 /* Top of directory hierarchies*/ #define FS_EXTENT_FL 0x00080000 /* Extents */ #define FS_DIRECTIO_FL 0x00100000 /* Use direct i/o */ +#define FS_NOCOW_FL 0x00800000 /* Do not cow file */ +#define FS_COW_FL 0x02000000 /* Cow file */ #define FS_RESERVED_FL 0x80000000 /* reserved for ext2 lib */ #define FS_FL_USER_VISIBLE 0x0003DFFF /* User visible flags */ -- cgit v1.2.3 From e2d3d44b9a6efe4f3968252d4b680397a9640268 Mon Sep 17 00:00:00 2001 From: Corentin Chary Date: Sun, 6 Feb 2011 13:30:47 +0100 Subject: eeepc-wmi: add camera keys These keys are supposed to be handled by any software using the camera (like webKam or cheese...). They can also be used to actually move the camera when possible. Signed-off-by: Corentin Chary Signed-off-by: Matthew Garrett --- include/linux/input.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/input.h b/include/linux/input.h index 056ae8a5bd9b..f3a7794a18c4 100644 --- a/include/linux/input.h +++ b/include/linux/input.h @@ -664,6 +664,13 @@ struct input_keymap_entry { #define KEY_TOUCHPAD_ON 0x213 #define KEY_TOUCHPAD_OFF 0x214 +#define KEY_CAMERA_ZOOMIN 0x215 +#define KEY_CAMERA_ZOOMOUT 0x216 +#define KEY_CAMERA_UP 0x217 +#define KEY_CAMERA_DOWN 0x218 +#define KEY_CAMERA_LEFT 0x219 +#define KEY_CAMERA_RIGHT 0x21a + #define BTN_TRIGGER_HAPPY 0x2c0 #define BTN_TRIGGER_HAPPY1 0x2c0 #define BTN_TRIGGER_HAPPY2 0x2c1 -- cgit v1.2.3 From 4eeb50220a4efd8c33598a228d03aff203a7ad07 Mon Sep 17 00:00:00 2001 From: Mattia Dongili Date: Sat, 19 Feb 2011 11:52:27 +0900 Subject: sony-laptop: ignore hard switch rfkill events (SPIC) There is not much use for these events in userspace and handling the events themselves seems to get in the way of the actual activation of the rf devices. The SNC device doesn't expose them already. https://bugzilla.kernel.org/show_bug.cgi?id=15303 Signed-off-by: Mattia Dongili Signed-off-by: Matthew Garrett --- include/linux/sonypi.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/sonypi.h b/include/linux/sonypi.h index 0e6dc3891942..c0f87da78f8a 100644 --- a/include/linux/sonypi.h +++ b/include/linux/sonypi.h @@ -40,6 +40,7 @@ /* events the user application reading /dev/sonypi can use */ +#define SONYPI_EVENT_IGNORE 0 #define SONYPI_EVENT_JOGDIAL_DOWN 1 #define SONYPI_EVENT_JOGDIAL_UP 2 #define SONYPI_EVENT_JOGDIAL_DOWN_PRESSED 3 -- cgit v1.2.3 From b554cb426a955a267dba524f98f99e29bc947643 Mon Sep 17 00:00:00 2001 From: Graf Yang Date: Mon, 28 Mar 2011 12:53:29 +0100 Subject: NOMMU: support SMP dynamic percpu_alloc The percpu code requires more functions to be implemented in the mm core which nommu currently does not provide. So add inline implementations since these are largely meaningless on nommu systems. Signed-off-by: Graf Yang Signed-off-by: Mike Frysinger Signed-off-by: David Howells Acked-by: Greg Ungerer --- include/linux/vmalloc.h | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) (limited to 'include/linux') diff --git a/include/linux/vmalloc.h b/include/linux/vmalloc.h index 4ed6fcd6b726..9332e52ea8c2 100644 --- a/include/linux/vmalloc.h +++ b/include/linux/vmalloc.h @@ -95,10 +95,27 @@ extern struct vm_struct *remove_vm_area(const void *addr); extern int map_vm_area(struct vm_struct *area, pgprot_t prot, struct page ***pages); +#ifdef CONFIG_MMU extern int map_kernel_range_noflush(unsigned long start, unsigned long size, pgprot_t prot, struct page **pages); extern void unmap_kernel_range_noflush(unsigned long addr, unsigned long size); extern void unmap_kernel_range(unsigned long addr, unsigned long size); +#else +static inline int +map_kernel_range_noflush(unsigned long start, unsigned long size, + pgprot_t prot, struct page **pages) +{ + return size >> PAGE_SHIFT; +} +static inline void +unmap_kernel_range_noflush(unsigned long addr, unsigned long size) +{ +} +static inline void +unmap_kernel_range(unsigned long addr, unsigned long size) +{ +} +#endif /* Allocate/destroy a 'vmalloc' VM area. */ extern struct vm_struct *alloc_vm_area(size_t size); @@ -116,11 +133,26 @@ extern struct vm_struct *vmlist; extern __init void vm_area_register_early(struct vm_struct *vm, size_t align); #ifdef CONFIG_SMP +# ifdef CONFIG_MMU struct vm_struct **pcpu_get_vm_areas(const unsigned long *offsets, const size_t *sizes, int nr_vms, size_t align); void pcpu_free_vm_areas(struct vm_struct **vms, int nr_vms); +# else +static inline struct vm_struct ** +pcpu_get_vm_areas(const unsigned long *offsets, + const size_t *sizes, int nr_vms, + size_t align) +{ + return NULL; +} + +static inline void +pcpu_free_vm_areas(struct vm_struct **vms, int nr_vms) +{ +} +# endif #endif #endif /* _LINUX_VMALLOC_H */ -- cgit v1.2.3 From 32f4125ebffee4f3c4dbc6a437fc656129eb9e60 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Mon, 28 Mar 2011 14:10:52 +0200 Subject: genirq: Move INPROGRESS, MASKED and DISABLED state flags to irq_data We really need these flags for some of the interrupt chips. Move it from internal state to irq_data and provide proper accessors. Signed-off-by: Thomas Gleixner Cc: David Daney --- include/linux/irq.h | 17 +++++++++++++++-- 1 file changed, 15 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index a10717e1c1f3..18aacccb0fae 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -174,8 +174,9 @@ struct irq_data { * from suspend * IRDQ_MOVE_PCNTXT - Interrupt can be moved in process * context - * IRQD_IRQ_DISABLED - Some chip function need to know the - * disabled state. + * IRQD_IRQ_DISABLED - Disabled state of the interrupt + * IRQD_IRQ_MASKED - Masked state of the interrupt + * IRQD_IRQ_INPROGRESS - In progress state of the interrupt */ enum { IRQD_TRIGGER_MASK = 0xf, @@ -187,6 +188,8 @@ enum { IRQD_WAKEUP_STATE = (1 << 14), IRQD_MOVE_PCNTXT = (1 << 15), IRQD_IRQ_DISABLED = (1 << 16), + IRQD_IRQ_MASKED = (1 << 17), + IRQD_IRQ_INPROGRESS = (1 << 18), }; static inline bool irqd_is_setaffinity_pending(struct irq_data *d) @@ -243,6 +246,16 @@ static inline bool irqd_irq_disabled(struct irq_data *d) return d->state_use_accessors & IRQD_IRQ_DISABLED; } +static inline bool irqd_irq_masked(struct irq_data *d) +{ + return d->state_use_accessors & IRQD_IRQ_MASKED; +} + +static inline bool irqd_irq_inprogress(struct irq_data *d) +{ + return d->state_use_accessors & IRQD_IRQ_INPROGRESS; +} + /** * struct irq_chip - hardware interrupt chip descriptor * -- cgit v1.2.3 From 0521c8fbb3da45c2a58cd551ca6e9644983f6028 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Mon, 28 Mar 2011 16:13:24 +0200 Subject: genirq: Provide edge_eoi flow handler This is a replacment for the cell flow handler which is in the way of cleanups. Must be selected to avoid general bloat. Signed-off-by: Thomas Gleixner --- include/linux/irq.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index 18aacccb0fae..44ebca745789 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -423,6 +423,7 @@ extern irqreturn_t handle_IRQ_event(unsigned int irq, struct irqaction *action); extern void handle_level_irq(unsigned int irq, struct irq_desc *desc); extern void handle_fasteoi_irq(unsigned int irq, struct irq_desc *desc); extern void handle_edge_irq(unsigned int irq, struct irq_desc *desc); +extern void handle_edge_eoi_irq(unsigned int irq, struct irq_desc *desc); extern void handle_simple_irq(unsigned int irq, struct irq_desc *desc); extern void handle_percpu_irq(unsigned int irq, struct irq_desc *desc); extern void handle_bad_irq(unsigned int irq, struct irq_desc *desc); -- cgit v1.2.3 From 33b054b867b84015173a38d9cd9ff513b6498818 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Mon, 28 Mar 2011 16:27:31 +0200 Subject: genirq: Remove handle_IRQ_event Last user gone. Signed-off-by: Thomas Gleixner --- include/linux/irq.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index 44ebca745789..41fc783171fd 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -413,9 +413,6 @@ static inline void irq_move_masked_irq(struct irq_data *data) { } extern int no_irq_affinity; -/* Handle irq action chains: */ -extern irqreturn_t handle_IRQ_event(unsigned int irq, struct irqaction *action); - /* * Built-in IRQ handlers for various IRQ types, * callable via desc->handle_irq() -- cgit v1.2.3 From 9cff60dfc3d54b60bc069627cee5624bfaa3f823 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Mon, 28 Mar 2011 16:41:14 +0200 Subject: genirq: Provide setter inline for IRQD_IRQ_INPROGRESS Special function for demultiplexing handlers which can be disabled via disable_irq(). Signed-off-by: Thomas Gleixner --- include/linux/irq.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index 41fc783171fd..84e1c5832c93 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -256,6 +256,21 @@ static inline bool irqd_irq_inprogress(struct irq_data *d) return d->state_use_accessors & IRQD_IRQ_INPROGRESS; } +/* + * Functions for chained handlers which can be enabled/disabled by the + * standard disable_irq/enable_irq calls. Must be called with + * irq_desc->lock held. + */ +static inline void irqd_set_chained_irq_inprogress(struct irq_data *d) +{ + d->state_use_accessors |= IRQD_IRQ_INPROGRESS; +} + +static inline void irqd_clr_chained_irq_inprogress(struct irq_data *d) +{ + d->state_use_accessors &= ~IRQD_IRQ_INPROGRESS; +} + /** * struct irq_chip - hardware interrupt chip descriptor * -- cgit v1.2.3 From ee38c04b58983a236b43bae71b2415d38bceaf75 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Mon, 28 Mar 2011 17:11:13 +0200 Subject: genirq: Add setter for AFFINITY_SET in irq_data state Some archs want to prevent the default affinity being set on their chips in the reqeust_irq() path. Signed-off-by: Thomas Gleixner --- include/linux/irq.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index 84e1c5832c93..34b954e54267 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -212,6 +212,11 @@ static inline bool irqd_affinity_was_set(struct irq_data *d) return d->state_use_accessors & IRQD_AFFINITY_SET; } +static inline void irqd_mark_affinity_was_set(struct irq_data *d) +{ + d->state_use_accessors |= IRQD_AFFINITY_SET; +} + static inline u32 irqd_get_trigger_type(struct irq_data *d) { return d->state_use_accessors & IRQD_TRIGGER_MASK; -- cgit v1.2.3 From 30398bf6c684a77274dbdabf7efc1f24e4a99028 Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Fri, 18 Mar 2011 09:33:56 -0700 Subject: genirq: Fix new kernel-doc warnings Fix new irq-related kernel-doc warnings in 2.6.38: Warning(kernel/irq/manage.c:149): No description found for parameter 'mask' Warning(kernel/irq/manage.c:149): Excess function parameter 'cpumask' description in 'irq_set_affinity' Warning(include/linux/irq.h:161): No description found for parameter 'state_use_accessors' Warning(include/linux/irq.h:161): Excess struct/union/enum/typedef member 'state_use_accessor' description in 'irq_data' Signed-off-by: Randy Dunlap LKML-Reference: <20110318093356.b939558d.randy.dunlap@oracle.com> Signed-off-by: Thomas Gleixner --- include/linux/irq.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index 34b954e54267..b3741c83774c 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -135,7 +135,7 @@ struct msi_desc; * struct irq_data - per irq and irq chip data passed down to chip functions * @irq: interrupt number * @node: node index useful for balancing - * @state_use_accessor: status information for irq chip functions. + * @state_use_accessors: status information for irq chip functions. * Use accessor functions to deal with it * @chip: low level interrupt hardware access * @handler_data: per-IRQ data for the irq_chip methods -- cgit v1.2.3 From a715dea3c8e9ef2771c534e05ee1d36f65987e64 Mon Sep 17 00:00:00 2001 From: Anton Blanchard Date: Sun, 27 Mar 2011 14:57:26 +0000 Subject: net: Always allocate at least 16 skb frags regardless of page size When analysing performance of the cxgb3 on a ppc64 box I noticed that we weren't doing much GRO merging. It turns out we are limited by the number of SKB frags: #define MAX_SKB_FRAGS (65536/PAGE_SIZE + 2) With a 4kB page size we have 18 frags, but with a 64kB page size we only have 3 frags. I ran a single stream TCP bandwidth test to compare the performance of Signed-off-by: David S. Miller --- include/linux/skbuff.h | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 24cfa626931e..239083bfea13 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -122,8 +122,14 @@ struct sk_buff_head { struct sk_buff; -/* To allow 64K frame to be packed as single skb without frag_list */ +/* To allow 64K frame to be packed as single skb without frag_list. Since + * GRO uses frags we allocate at least 16 regardless of page size. + */ +#if (65536/PAGE_SIZE + 2) < 16 +#define MAX_SKB_FRAGS 16 +#else #define MAX_SKB_FRAGS (65536/PAGE_SIZE + 2) +#endif typedef struct skb_frag_struct skb_frag_t; -- cgit v1.2.3 From 0c6f8a8b917ad361319c8ace3e9f28e69bfdb4c1 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Mon, 28 Mar 2011 13:32:20 +0200 Subject: genirq: Remove compat code Signed-off-by: Thomas Gleixner --- include/linux/irq.h | 117 ------------------------------------------------ include/linux/irqdesc.h | 60 +------------------------ 2 files changed, 1 insertion(+), 176 deletions(-) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index b3741c83774c..7b3faace437d 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -92,18 +92,6 @@ enum { IRQ_NO_BALANCING = (1 << 13), IRQ_MOVE_PCNTXT = (1 << 14), IRQ_NESTED_THREAD = (1 << 15), - -#ifndef CONFIG_GENERIC_HARDIRQS_NO_COMPAT - IRQ_INPROGRESS = (1 << 16), - IRQ_REPLAY = (1 << 17), - IRQ_WAITING = (1 << 18), - IRQ_DISABLED = (1 << 19), - IRQ_PENDING = (1 << 20), - IRQ_MASKED = (1 << 21), - IRQ_MOVE_PENDING = (1 << 22), - IRQ_AFFINITY_SET = (1 << 23), - IRQ_WAKEUP = (1 << 24), -#endif }; #define IRQF_MODIFY_MASK \ @@ -321,28 +309,6 @@ static inline void irqd_clr_chained_irq_inprogress(struct irq_data *d) */ struct irq_chip { const char *name; -#ifndef CONFIG_GENERIC_HARDIRQS_NO_DEPRECATED - unsigned int (*startup)(unsigned int irq); - void (*shutdown)(unsigned int irq); - void (*enable)(unsigned int irq); - void (*disable)(unsigned int irq); - - void (*ack)(unsigned int irq); - void (*mask)(unsigned int irq); - void (*mask_ack)(unsigned int irq); - void (*unmask)(unsigned int irq); - void (*eoi)(unsigned int irq); - - void (*end)(unsigned int irq); - int (*set_affinity)(unsigned int irq, - const struct cpumask *dest); - int (*retrigger)(unsigned int irq); - int (*set_type)(unsigned int irq, unsigned int flow_type); - int (*set_wake)(unsigned int irq, unsigned int on); - - void (*bus_lock)(unsigned int irq); - void (*bus_sync_unlock)(unsigned int irq); -#endif unsigned int (*irq_startup)(struct irq_data *data); void (*irq_shutdown)(struct irq_data *data); void (*irq_enable)(struct irq_data *data); @@ -589,89 +555,6 @@ static inline struct msi_desc *irq_data_get_msi(struct irq_data *d) return d->msi_desc; } -#ifndef CONFIG_GENERIC_HARDIRQS_NO_COMPAT -/* Please do not use: Use the replacement functions instead */ -static inline int set_irq_chip(unsigned int irq, struct irq_chip *chip) -{ - return irq_set_chip(irq, chip); -} -static inline int set_irq_data(unsigned int irq, void *data) -{ - return irq_set_handler_data(irq, data); -} -static inline int set_irq_chip_data(unsigned int irq, void *data) -{ - return irq_set_chip_data(irq, data); -} -static inline int set_irq_type(unsigned int irq, unsigned int type) -{ - return irq_set_irq_type(irq, type); -} -static inline int set_irq_msi(unsigned int irq, struct msi_desc *entry) -{ - return irq_set_msi_desc(irq, entry); -} -static inline struct irq_chip *get_irq_chip(unsigned int irq) -{ - return irq_get_chip(irq); -} -static inline void *get_irq_chip_data(unsigned int irq) -{ - return irq_get_chip_data(irq); -} -static inline void *get_irq_data(unsigned int irq) -{ - return irq_get_handler_data(irq); -} -static inline void *irq_data_get_irq_data(struct irq_data *d) -{ - return irq_data_get_irq_handler_data(d); -} -static inline struct msi_desc *get_irq_msi(unsigned int irq) -{ - return irq_get_msi_desc(irq); -} -static inline void set_irq_noprobe(unsigned int irq) -{ - irq_set_noprobe(irq); -} -static inline void set_irq_probe(unsigned int irq) -{ - irq_set_probe(irq); -} -static inline void set_irq_nested_thread(unsigned int irq, int nest) -{ - irq_set_nested_thread(irq, nest); -} -static inline void -set_irq_chip_and_handler_name(unsigned int irq, struct irq_chip *chip, - irq_flow_handler_t handle, const char *name) -{ - irq_set_chip_and_handler_name(irq, chip, handle, name); -} -static inline void -set_irq_chip_and_handler(unsigned int irq, struct irq_chip *chip, - irq_flow_handler_t handle) -{ - irq_set_chip_and_handler(irq, chip, handle); -} -static inline void -__set_irq_handler(unsigned int irq, irq_flow_handler_t handle, int is_chained, - const char *name) -{ - __irq_set_handler(irq, handle, is_chained, name); -} -static inline void set_irq_handler(unsigned int irq, irq_flow_handler_t handle) -{ - irq_set_handler(irq, handle); -} -static inline void -set_irq_chained_handler(unsigned int irq, irq_flow_handler_t handle) -{ - irq_set_chained_handler(irq, handle); -} -#endif - int irq_alloc_descs(int irq, unsigned int from, unsigned int cnt, int node); void irq_free_descs(unsigned int irq, unsigned int cnt); int irq_reserve_irqs(unsigned int from, unsigned int cnt); diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h index 15e6c3905f41..a082905b5ebe 100644 --- a/include/linux/irqdesc.h +++ b/include/linux/irqdesc.h @@ -35,32 +35,7 @@ struct timer_rand_state; * @name: flow handler name for /proc/interrupts output */ struct irq_desc { - -#ifdef CONFIG_GENERIC_HARDIRQS_NO_DEPRECATED struct irq_data irq_data; -#else - /* - * This union will go away, once we fixed the direct access to - * irq_desc all over the place. The direct fields are a 1:1 - * overlay of irq_data. - */ - union { - struct irq_data irq_data; - struct { - unsigned int irq; - unsigned int node; - unsigned int pad_do_not_even_think_about_it; - struct irq_chip *chip; - void *handler_data; - void *chip_data; - struct msi_desc *msi_desc; -#ifdef CONFIG_SMP - cpumask_var_t affinity; -#endif - }; - }; -#endif - struct timer_rand_state *timer_rand_state; unsigned int __percpu *kstat_irqs; irq_flow_handler_t handle_irq; @@ -68,11 +43,7 @@ struct irq_desc { irq_preflow_handler_t preflow_handler; #endif struct irqaction *action; /* IRQ action list */ -#ifdef CONFIG_GENERIC_HARDIRQS_NO_COMPAT unsigned int status_use_accessors; -#else - unsigned int status; /* IRQ status */ -#endif unsigned int core_internal_state__do_not_mess_with_it; unsigned int depth; /* nested irq disables */ unsigned int wake_depth; /* nested wake enables */ @@ -127,27 +98,6 @@ static inline struct msi_desc *irq_desc_get_msi_desc(struct irq_desc *desc) return desc->irq_data.msi_desc; } -#ifndef CONFIG_GENERIC_HARDIRQS_NO_COMPAT -static inline struct irq_chip *get_irq_desc_chip(struct irq_desc *desc) -{ - return irq_desc_get_chip(desc); -} -static inline void *get_irq_desc_data(struct irq_desc *desc) -{ - return irq_desc_get_handler_data(desc); -} - -static inline void *get_irq_desc_chip_data(struct irq_desc *desc) -{ - return irq_desc_get_chip_data(desc); -} - -static inline struct msi_desc *get_irq_desc_msi(struct irq_desc *desc) -{ - return irq_desc_get_msi_desc(desc); -} -#endif - /* * Architectures call this to let the generic IRQ layer * handle an interrupt. If the descriptor is attached to an @@ -194,21 +144,13 @@ __irq_set_chip_handler_name_locked(unsigned int irq, struct irq_chip *chip, desc->name = name; } -#ifndef CONFIG_GENERIC_HARDIRQS_NO_COMPAT -static inline void __set_irq_handler_unlocked(int irq, - irq_flow_handler_t handler) -{ - __irq_set_handler_locked(irq, handler); -} - static inline int irq_balancing_disabled(unsigned int irq) { struct irq_desc *desc; desc = irq_to_desc(irq); - return desc->status & IRQ_NO_BALANCING_MASK; + return desc->status_use_accessors & IRQ_NO_BALANCING_MASK; } -#endif static inline void irq_set_lockdep_class(unsigned int irq, struct lock_class_key *class) -- cgit v1.2.3 From 851d7cf647e0d31668eb5dc496f7698a2f6136b4 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Tue, 29 Mar 2011 02:51:13 +0200 Subject: genirq: Remove move_*irq leftovers All users converted to new interface. Signed-off-by: Thomas Gleixner --- include/linux/irq.h | 4 ---- 1 file changed, 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index 7b3faace437d..2a375a72ce3c 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -386,13 +386,9 @@ extern int __irq_set_affinity_locked(struct irq_data *data, const struct cpumas #ifdef CONFIG_GENERIC_HARDIRQS #if defined(CONFIG_SMP) && defined(CONFIG_GENERIC_PENDING_IRQ) -void move_native_irq(int irq); -void move_masked_irq(int irq); void irq_move_irq(struct irq_data *data); void irq_move_masked_irq(struct irq_data *data); #else -static inline void move_native_irq(int irq) { } -static inline void move_masked_irq(int irq) { } static inline void irq_move_irq(struct irq_data *data) { } static inline void irq_move_masked_irq(struct irq_data *data) { } #endif -- cgit v1.2.3 From 8323c3aa74cd92465350294567142d12ffdcc963 Mon Sep 17 00:00:00 2001 From: Tommi Virtanen Date: Fri, 25 Mar 2011 16:32:57 -0700 Subject: ceph: Move secret key parsing earlier. This makes the base64 logic be contained in mount option parsing, and prepares us for replacing the homebew key management with the kernel key retention service. Signed-off-by: Tommi Virtanen Signed-off-by: Sage Weil --- include/linux/ceph/auth.h | 4 ++-- include/linux/ceph/libceph.h | 2 +- 2 files changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ceph/auth.h b/include/linux/ceph/auth.h index 7fff521d7eb5..aa13392a7efb 100644 --- a/include/linux/ceph/auth.h +++ b/include/linux/ceph/auth.h @@ -67,12 +67,12 @@ struct ceph_auth_client { bool negotiating; /* true if negotiating protocol */ const char *name; /* entity name */ u64 global_id; /* our unique id in system */ - const char *secret; /* our secret key */ + const struct ceph_crypto_key *key; /* our secret key */ unsigned want_keys; /* which services we want */ }; extern struct ceph_auth_client *ceph_auth_init(const char *name, - const char *secret); + const struct ceph_crypto_key *key); extern void ceph_auth_destroy(struct ceph_auth_client *ac); extern void ceph_auth_reset(struct ceph_auth_client *ac); diff --git a/include/linux/ceph/libceph.h b/include/linux/ceph/libceph.h index 0d2e0fffb470..6365f041745b 100644 --- a/include/linux/ceph/libceph.h +++ b/include/linux/ceph/libceph.h @@ -61,7 +61,7 @@ struct ceph_options { pointer type of args */ int num_mon; char *name; - char *secret; + struct ceph_crypto_key *key; }; /* -- cgit v1.2.3 From 380a26be7d5af83f3831c3b6697031dffbb1c8f3 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Wed, 30 Mar 2011 00:35:34 +0200 Subject: genirq: Remove now obsolete set_irq_wake() Missed that one in the big compat remval patch Signed-off-by: Thomas Gleixner --- include/linux/interrupt.h | 8 -------- 1 file changed, 8 deletions(-) (limited to 'include/linux') diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h index 59b72ca1c5d1..943c9b53695c 100644 --- a/include/linux/interrupt.h +++ b/include/linux/interrupt.h @@ -338,14 +338,6 @@ static inline void enable_irq_lockdep_irqrestore(unsigned int irq, unsigned long /* IRQ wakeup (PM) control: */ extern int irq_set_irq_wake(unsigned int irq, unsigned int on); -#ifndef CONFIG_GENERIC_HARDIRQS_NO_COMPAT -/* Please do not use: Use the replacement functions instead */ -static inline int set_irq_wake(unsigned int irq, unsigned int on) -{ - return irq_set_irq_wake(irq, on); -} -#endif - static inline int enable_irq_wake(unsigned int irq) { return irq_set_irq_wake(irq, 1); -- cgit v1.2.3 From 28959f268f910b2cd1c25e838b63c342062e28f2 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Wed, 30 Mar 2011 00:37:41 +0200 Subject: genirq: Remove obsolete comment Signed-off-by: Thomas Gleixner --- include/linux/irq.h | 7 ------- 1 file changed, 7 deletions(-) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index 2a375a72ce3c..09a308072f56 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -64,13 +64,6 @@ typedef void (*irq_preflow_handler_t)(struct irq_data *data); * IRQ_NO_BALANCING - Interrupt cannot be balanced (affinity set) * IRQ_MOVE_PCNTXT - Interrupt can be migrated from process context * IRQ_NESTED_TRHEAD - Interrupt nests into another thread - * - * Deprecated bits. They are kept updated as long as - * CONFIG_GENERIC_HARDIRQS_NO_COMPAT is not set. Will go away soon. These bits - * are internal state of the core code and if you really need to acces - * them then talk to the genirq maintainer instead of hacking - * something weird. - * */ enum { IRQ_TYPE_NONE = 0x00000000, -- cgit v1.2.3 From f6d5b33125c4fa63c16f7f54c533338c9695d82c Mon Sep 17 00:00:00 2001 From: John Stultz Date: Tue, 29 Mar 2011 18:00:27 -0700 Subject: RTC: Fix early irqs caused by calling rtc_set_alarm too early When we register an rtc device at boot, we read the alarm value in hardware and set the rtc device's aie_timer to that value. The initial method to do this was to simply call rtc_set_alarm() with the value read from hardware. However, this may cause problems as rtc_set_alarm may enable interupts, and the RTC alarm might fire, which can cause invalid pointer dereferencing since the RTC registration is not complete. This patch solves the issue by initializing the rtc_device.aie_timer y hand via rtc_initialize_alarm(). This avoids any calls to the RTC hardware which might enable interrupts too early. CC: Thomas Gleixner CC: Alessandro Zummo Reported-by: Konrad Rzeszutek Wilk Tested-by: Konrad Rzeszutek Wilk Signed-off-by: John Stultz --- include/linux/rtc.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/rtc.h b/include/linux/rtc.h index 2ca7e8a78060..877ece45426f 100644 --- a/include/linux/rtc.h +++ b/include/linux/rtc.h @@ -228,6 +228,8 @@ extern int rtc_read_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alrm); extern int rtc_set_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alrm); +extern int rtc_initialize_alarm(struct rtc_device *rtc, + struct rtc_wkalrm *alrm); extern void rtc_update_irq(struct rtc_device *rtc, unsigned long num, unsigned long events); -- cgit v1.2.3 From eec009548e98f6b6d514ff5bb8a8627b8dd17a49 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Tue, 29 Mar 2011 23:34:08 -0700 Subject: net: Fix warnings caused by MAX_SKB_FRAGS change. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit After commit a715dea3c8e9ef2771c534e05ee1d36f65987e64 ("net: Always allocate at least 16 skb frags regardless of page size"), the value of MAX_SKB_FRAGS can now take on either an "unsigned long" or an "int" value. This causes warnings like: net/packet/af_packet.c: In function ‘tpacket_fill_skb’: net/packet/af_packet.c:948: warning: format ‘%lu’ expects type ‘long unsigned int’, but argument 2 has type ‘int’ Fix by forcing the constant to be unsigned long, otherwise we have a situation where the type of a system wide constant is variable. Signed-off-by: David S. Miller --- include/linux/skbuff.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 239083bfea13..d9e52fa2416d 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -126,7 +126,7 @@ struct sk_buff; * GRO uses frags we allocate at least 16 regardless of page size. */ #if (65536/PAGE_SIZE + 2) < 16 -#define MAX_SKB_FRAGS 16 +#define MAX_SKB_FRAGS 16UL #else #define MAX_SKB_FRAGS (65536/PAGE_SIZE + 2) #endif -- cgit v1.2.3 From 7a635ea989991d7f12d57a12f2ba7cb6d211e083 Mon Sep 17 00:00:00 2001 From: Andrzej Zaborowski Date: Mon, 28 Mar 2011 12:56:33 +0000 Subject: net/usb: Ethernet quirks for the LG-VL600 4G modem This adds a driver for the CDC Ethernet part of this modem. The device's ID is blacklisted in cdc_ether.c and is white-listed in this new driver because of the quirks needed to make it useful. The modem's firmware exposes a CDC ACM port for modem control and a CDC Ethernet port for network data. The descriptors look fine but both ports actually are some sort of multiplexers requiring non- standard headers added/removed from every packet or they get ignored. All information is based on a usb traffic log from a Windows machine. On the Verizon 4G network I've seen speeds up to 1.1MB/s so far with this driver, a speed-o-meter site reports 16.2Mbps/10.5Mbps. Userspace scripts are required to talk to the CDC ACM port. Signed-off-by: Andrzej Zaborowski Signed-off-by: David S. Miller --- include/linux/usb/usbnet.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb/usbnet.h b/include/linux/usb/usbnet.h index 44842c8d38c0..201f2228f731 100644 --- a/include/linux/usb/usbnet.h +++ b/include/linux/usb/usbnet.h @@ -102,6 +102,7 @@ struct driver_info { * Affects statistic (counters) and short packet handling. */ #define FLAG_MULTI_PACKET 0x1000 +#define FLAG_RX_ASSEMBLE 0x2000 /* rx packets may span >1 frames */ /* init device ... can sleep, or cause probe() failure */ int (*bind)(struct usbnet *, struct usb_interface *); @@ -172,7 +173,9 @@ struct cdc_state { }; extern int usbnet_generic_cdc_bind(struct usbnet *, struct usb_interface *); +extern int usbnet_cdc_bind(struct usbnet *, struct usb_interface *); extern void usbnet_cdc_unbind(struct usbnet *, struct usb_interface *); +extern void usbnet_cdc_status(struct usbnet *, struct urb *); /* CDC and RNDIS support the same host-chosen packet filters for IN transfers */ #define DEFAULT_FILTER (USB_CDC_PACKET_TYPE_BROADCAST \ -- cgit v1.2.3 From c031235b395433350f25943b7580a5e343c7b7b2 Mon Sep 17 00:00:00 2001 From: "Philip A. Prindeville" Date: Wed, 30 Mar 2011 13:17:04 +0000 Subject: atm/solos-pci: Don't flap VCs when carrier state changes Don't flap VCs when carrier state changes; higher-level protocols can detect loss of connectivity and act accordingly. This is more consistent with how other network interfaces work. We no longer use release_vccs() so we can delete it. release_vccs() was duplicated from net/atm/common.c; make the corresponding function exported, since other code duplicates it and could leverage it if it were public. Signed-off-by: Philip A. Prindeville Signed-off-by: David S. Miller --- include/linux/atmdev.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/atmdev.h b/include/linux/atmdev.h index 475f8c42c0e9..381f4cec8260 100644 --- a/include/linux/atmdev.h +++ b/include/linux/atmdev.h @@ -443,6 +443,7 @@ void atm_dev_signal_change(struct atm_dev *dev, char signal); void vcc_insert_socket(struct sock *sk); +void atm_dev_release_vccs(struct atm_dev *dev); /* * This is approximately the algorithm used by alloc_skb. -- cgit v1.2.3 From 04f482faf50535229a5a5c8d629cf963899f857c Mon Sep 17 00:00:00 2001 From: Patrick McHardy Date: Mon, 28 Mar 2011 08:39:36 +0000 Subject: connector: convert to synchronous netlink message processing Commits 01a16b21 (netlink: kill eff_cap from struct netlink_skb_parms) and c53fa1ed (netlink: kill loginuid/sessionid/sid members from struct netlink_skb_parms) removed some members from struct netlink_skb_parms that depend on the current context, all netlink users are now required to do synchronous message processing. connector however queues received messages and processes them in a work queue, which is not valid anymore. This patch converts connector to do synchronous message processing by invoking the registered callback handler directly from the netlink receive function. In order to avoid invoking the callback with connector locks held, a reference count is added to struct cn_callback_entry, the reference is taken when finding a matching callback entry on the device's queue_list and released after the callback handler has been invoked. Signed-off-by: Patrick McHardy Acked-by: Evgeniy Polyakov Signed-off-by: David S. Miller --- include/linux/connector.h | 16 +++------------- 1 file changed, 3 insertions(+), 13 deletions(-) (limited to 'include/linux') diff --git a/include/linux/connector.h b/include/linux/connector.h index bcafc942e5e4..7c60d0942adb 100644 --- a/include/linux/connector.h +++ b/include/linux/connector.h @@ -88,8 +88,6 @@ struct cn_queue_dev { atomic_t refcnt; unsigned char name[CN_CBQ_NAMELEN]; - struct workqueue_struct *cn_queue; - struct list_head queue_list; spinlock_t queue_lock; @@ -101,20 +99,13 @@ struct cn_callback_id { struct cb_id id; }; -struct cn_callback_data { - struct sk_buff *skb; - void (*callback) (struct cn_msg *, struct netlink_skb_parms *); - - void *free; -}; - struct cn_callback_entry { struct list_head callback_entry; - struct work_struct work; + atomic_t refcnt; struct cn_queue_dev *pdev; struct cn_callback_id id; - struct cn_callback_data data; + void (*callback) (struct cn_msg *, struct netlink_skb_parms *); u32 seq, group; }; @@ -138,13 +129,12 @@ int cn_queue_add_callback(struct cn_queue_dev *dev, const char *name, struct cb_id *id, void (*callback)(struct cn_msg *, struct netlink_skb_parms *)); void cn_queue_del_callback(struct cn_queue_dev *dev, struct cb_id *id); +void cn_queue_release_callback(struct cn_callback_entry *); struct cn_queue_dev *cn_queue_alloc_dev(const char *name, struct sock *); void cn_queue_free_dev(struct cn_queue_dev *dev); int cn_cb_equal(struct cb_id *, struct cb_id *); -void cn_queue_wrapper(struct work_struct *work); - #endif /* __KERNEL__ */ #endif /* __CONNECTOR_H */ -- cgit v1.2.3 From cb6c8520f6f6bba7b7e1a6de3360a8edfd8243b6 Mon Sep 17 00:00:00 2001 From: Borislav Petkov Date: Wed, 30 Mar 2011 20:34:47 +0200 Subject: x86, amd-nb: Rename CPU PCI id define for F4 With increasing number of PCI function ids, add the PCI function id in the define name instead of its symbolic name in the BKDG for more clarity. This renames function 4 define. Signed-off-by: Borislav Petkov Cc: Jesse Barnes LKML-Reference: <20110330183447.GA3668@aftab> Signed-off-by: Ingo Molnar --- include/linux/pci_ids.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h index 11fd38151cc9..4e2c9150a785 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -518,7 +518,7 @@ #define PCI_DEVICE_ID_AMD_11H_NB_MISC 0x1303 #define PCI_DEVICE_ID_AMD_11H_NB_LINK 0x1304 #define PCI_DEVICE_ID_AMD_15H_NB_F3 0x1603 -#define PCI_DEVICE_ID_AMD_15H_NB_LINK 0x1604 +#define PCI_DEVICE_ID_AMD_15H_NB_F4 0x1604 #define PCI_DEVICE_ID_AMD_CNB17H_F3 0x1703 #define PCI_DEVICE_ID_AMD_LANCE 0x2000 #define PCI_DEVICE_ID_AMD_LANCE_HOME 0x2001 -- cgit v1.2.3 From ab711fe08297de1485fff0a366e6db8828cafd6a Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Thu, 31 Mar 2011 10:29:26 +0200 Subject: perf: Fix task context scheduling Jiri reported: | | - once an event is created by sys_perf_event_open, task context | is created and it stays even if the event is closed, until the | task is finished ... thats what I see in code and I assume it's | correct | | - when the task opens event, perf_sched_events jump label is | incremented and following callbacks are started from scheduler | | __perf_event_task_sched_in | __perf_event_task_sched_out | | These callback *in/out set/unset cpuctx->task_ctx value to the | task context. | | - close is called on event on CPU 0: | - the task is scheduled on CPU 0 | - __perf_event_task_sched_in is called | - cpuctx->task_ctx is set | - perf_sched_events jump label is decremented and == 0 | - __perf_event_task_sched_out is not called | - cpuctx->task_ctx on CPU 0 stays set | | - exit is called on CPU 1: | - the task is scheduled on CPU 1 | - perf_event_exit_task is called | - task_ctx_sched_out unsets cpuctx->task_ctx on CPU 1 | - put_ctx destroys the context | | - another call of perf_rotate_context on CPU 0 will use invalid | task_ctx pointer, and eventualy panic. | Cure this the simplest possibly way by partially reverting the jump_label optimization for the sched_out case. Reported-and-tested-by: Jiri Olsa Signed-off-by: Peter Zijlstra Cc: Oleg Nesterov Cc: # .37+ LKML-Reference: <1301520405.4859.213.camel@twins> Signed-off-by: Ingo Molnar --- include/linux/perf_event.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index 311b4dc785a1..04d75a8a20ee 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -1086,7 +1086,7 @@ void perf_event_task_sched_out(struct task_struct *task, struct task_struct *nex { perf_sw_event(PERF_COUNT_SW_CONTEXT_SWITCHES, 1, 1, NULL, 0); - COND_STMT(&perf_sched_events, __perf_event_task_sched_out(task, next)); + __perf_event_task_sched_out(task, next); } extern void perf_event_mmap(struct vm_area_struct *vma); -- cgit v1.2.3 From 25985edcedea6396277003854657b5f3cb31a628 Mon Sep 17 00:00:00 2001 From: Lucas De Marchi Date: Wed, 30 Mar 2011 22:57:33 -0300 Subject: Fix common misspellings Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi --- include/linux/amba/clcd.h | 2 +- include/linux/amba/mmci.h | 6 +++--- include/linux/can/error.h | 2 +- include/linux/can/netlink.h | 2 +- include/linux/cdk.h | 2 +- include/linux/cfag12864b.h | 2 +- include/linux/cgroup.h | 2 +- include/linux/cm4000_cs.h | 2 +- include/linux/configfs.h | 2 +- include/linux/cper.h | 2 +- include/linux/decompress/mm.h | 2 +- include/linux/dmaengine.h | 2 +- include/linux/drbd.h | 4 ++-- include/linux/drbd_limits.h | 6 +++--- include/linux/ethtool.h | 2 +- include/linux/eventpoll.h | 2 +- include/linux/exportfs.h | 2 +- include/linux/fb.h | 8 ++++---- include/linux/firewire-cdev.h | 2 +- include/linux/fs.h | 4 ++-- include/linux/fscache-cache.h | 2 +- include/linux/fscache.h | 6 +++--- include/linux/hid.h | 2 +- include/linux/hp_sdc.h | 2 +- include/linux/i2o.h | 2 +- include/linux/interrupt.h | 4 ++-- include/linux/ipmi.h | 4 ++-- include/linux/isdn/hdlc.h | 2 +- include/linux/ixjuser.h | 2 +- include/linux/jiffies.h | 2 +- include/linux/ktime.h | 4 ++-- include/linux/led-lm3530.h | 2 +- include/linux/libata.h | 2 +- include/linux/lru_cache.h | 2 +- include/linux/mfd/wm8350/pmic.h | 2 +- include/linux/mm.h | 2 +- include/linux/mmc/dw_mmc.h | 4 ++-- include/linux/mroute6.h | 2 +- include/linux/mtd/cfi.h | 2 +- include/linux/mtd/nand.h | 6 +++--- include/linux/mtd/xip.h | 2 +- include/linux/netfilter/nf_conntrack_proto_gre.h | 2 +- include/linux/netfilter_bridge/ebtables.h | 2 +- include/linux/nfs4.h | 2 +- include/linux/nfsd/export.h | 2 +- include/linux/nfsd/nfsfh.h | 2 +- include/linux/nl80211.h | 10 +++++----- include/linux/notifier.h | 2 +- include/linux/omap3isp.h | 2 +- include/linux/page_cgroup.h | 2 +- include/linux/pci_regs.h | 4 ++-- include/linux/perf_event.h | 2 +- include/linux/pid.h | 2 +- include/linux/pkt_sched.h | 2 +- include/linux/poll.h | 2 +- include/linux/prefetch.h | 2 +- include/linux/pxa2xx_ssp.h | 2 +- include/linux/raid/md_p.h | 2 +- include/linux/reiserfs_fs.h | 2 +- include/linux/sched.h | 2 +- include/linux/skbuff.h | 2 +- include/linux/smc91x.h | 2 +- include/linux/socket.h | 2 +- include/linux/soundcard.h | 2 +- include/linux/spi/spidev.h | 2 +- include/linux/spinlock.h | 2 +- include/linux/stmmac.h | 2 +- include/linux/stop_machine.h | 2 +- include/linux/sunrpc/cache.h | 4 ++-- include/linux/sunrpc/svcauth_gss.h | 2 +- include/linux/sysdev.h | 6 +++--- include/linux/timerqueue.h | 2 +- include/linux/tracehook.h | 4 ++-- include/linux/ucb1400.h | 2 +- include/linux/usb.h | 4 ++-- include/linux/usb/composite.h | 2 +- include/linux/usb/ehci_def.h | 2 +- include/linux/usb/functionfs.h | 4 ++-- include/linux/usb/gadget.h | 4 ++-- include/linux/usb/midi.h | 2 +- include/linux/usb/wusb.h | 2 +- include/linux/uwb.h | 6 +++--- include/linux/uwb/umc.h | 2 +- include/linux/vgaarb.h | 4 ++-- include/linux/wimax.h | 2 +- include/linux/xilinxfb.h | 2 +- 86 files changed, 118 insertions(+), 118 deletions(-) (limited to 'include/linux') diff --git a/include/linux/amba/clcd.h b/include/linux/amba/clcd.h index 24d26efd1432..e82e3ee2c54a 100644 --- a/include/linux/amba/clcd.h +++ b/include/linux/amba/clcd.h @@ -136,7 +136,7 @@ struct clcd_board { int (*check)(struct clcd_fb *fb, struct fb_var_screeninfo *var); /* - * Compulsary. Decode fb->fb.var into regs->*. In the case of + * Compulsory. Decode fb->fb.var into regs->*. In the case of * fixed timing, set regs->* to the register values required. */ void (*decode)(struct clcd_fb *fb, struct clcd_regs *regs); diff --git a/include/linux/amba/mmci.h b/include/linux/amba/mmci.h index f60227088b7b..21114810c7c0 100644 --- a/include/linux/amba/mmci.h +++ b/include/linux/amba/mmci.h @@ -30,15 +30,15 @@ struct dma_chan; * @cd_invert: true if the gpio_cd pin value is active low * @capabilities: the capabilities of the block as implemented in * this platform, signify anything MMC_CAP_* from mmc/host.h - * @dma_filter: function used to select an apropriate RX and TX + * @dma_filter: function used to select an appropriate RX and TX * DMA channel to be used for DMA, if and only if you're deploying the * generic DMA engine * @dma_rx_param: parameter passed to the DMA allocation - * filter in order to select an apropriate RX channel. If + * filter in order to select an appropriate RX channel. If * there is a bidirectional RX+TX channel, then just specify * this and leave dma_tx_param set to NULL * @dma_tx_param: parameter passed to the DMA allocation - * filter in order to select an apropriate TX channel. If this + * filter in order to select an appropriate TX channel. If this * is NULL the driver will attempt to use the RX channel as a * bidirectional channel */ diff --git a/include/linux/can/error.h b/include/linux/can/error.h index d4127fd9e681..5958074302a4 100644 --- a/include/linux/can/error.h +++ b/include/linux/can/error.h @@ -51,7 +51,7 @@ #define CAN_ERR_PROT_BIT1 0x10 /* unable to send recessive bit */ #define CAN_ERR_PROT_OVERLOAD 0x20 /* bus overload */ #define CAN_ERR_PROT_ACTIVE 0x40 /* active error announcement */ -#define CAN_ERR_PROT_TX 0x80 /* error occured on transmission */ +#define CAN_ERR_PROT_TX 0x80 /* error occurred on transmission */ /* error in CAN protocol (location) / data[3] */ #define CAN_ERR_PROT_LOC_UNSPEC 0x00 /* unspecified */ diff --git a/include/linux/can/netlink.h b/include/linux/can/netlink.h index 3250de935e1a..34542d374dd8 100644 --- a/include/linux/can/netlink.h +++ b/include/linux/can/netlink.h @@ -17,7 +17,7 @@ /* * CAN bit-timing parameters * - * For futher information, please read chapter "8 BIT TIMING + * For further information, please read chapter "8 BIT TIMING * REQUIREMENTS" of the "Bosch CAN Specification version 2.0" * at http://www.semiconductors.bosch.de/pdf/can2spec.pdf. */ diff --git a/include/linux/cdk.h b/include/linux/cdk.h index 0908daf7bf56..80093a8d4f64 100644 --- a/include/linux/cdk.h +++ b/include/linux/cdk.h @@ -149,7 +149,7 @@ typedef struct cdkhdr { /* * Define the memory mapping structure. This structure is pointed to by * the memp field in the stlcdkhdr struct. As many as these structures - * as required are layed out in shared memory to define how the rest of + * as required are laid out in shared memory to define how the rest of * shared memory is divided up. There will be one for each port. */ typedef struct cdkmem { diff --git a/include/linux/cfag12864b.h b/include/linux/cfag12864b.h index 6f9f19d66591..b454dfce60d9 100644 --- a/include/linux/cfag12864b.h +++ b/include/linux/cfag12864b.h @@ -44,7 +44,7 @@ extern unsigned char * cfag12864b_buffer; /* * Get the refresh rate of the LCD * - * Returns the refresh rate (hertzs). + * Returns the refresh rate (hertz). */ extern unsigned int cfag12864b_getrate(void); diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h index e654fa239916..5ac7ebc36dbb 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -240,7 +240,7 @@ struct cgroup { /* For RCU-protected deletion */ struct rcu_head rcu_head; - /* List of events which userspace want to recieve */ + /* List of events which userspace want to receive */ struct list_head event_list; spinlock_t event_list_lock; }; diff --git a/include/linux/cm4000_cs.h b/include/linux/cm4000_cs.h index 72bfefdbd767..3c4aac406175 100644 --- a/include/linux/cm4000_cs.h +++ b/include/linux/cm4000_cs.h @@ -20,7 +20,7 @@ typedef struct atreq { } atreq_t; -/* what is particularly stupid in the original driver is the arch-dependant +/* what is particularly stupid in the original driver is the arch-dependent * member sizes. This leads to CONFIG_COMPAT breakage, since 32bit userspace * will lay out the structure members differently than the 64bit kernel. * diff --git a/include/linux/configfs.h b/include/linux/configfs.h index ddb7a97c78c2..645778ad899b 100644 --- a/include/linux/configfs.h +++ b/include/linux/configfs.h @@ -218,7 +218,7 @@ static ssize_t _item##_attr_store(struct config_item *item, \ * group children. default_groups may coexist alongsize make_group() or * make_item(), but if the group wishes to have only default_groups * children (disallowing mkdir(2)), it need not provide either function. - * If the group has commit(), it supports pending and commited (active) + * If the group has commit(), it supports pending and committed (active) * items. */ struct configfs_item_operations { diff --git a/include/linux/cper.h b/include/linux/cper.h index 372a25839fd1..c23049496531 100644 --- a/include/linux/cper.h +++ b/include/linux/cper.h @@ -310,7 +310,7 @@ struct cper_sec_proc_ia { __u8 cpuid[48]; }; -/* IA32/X64 Processor Error Infomation Structure */ +/* IA32/X64 Processor Error Information Structure */ struct cper_ia_err_info { uuid_le err_type; __u64 validation_bits; diff --git a/include/linux/decompress/mm.h b/include/linux/decompress/mm.h index 4cb72b920c74..7925bf0ee836 100644 --- a/include/linux/decompress/mm.h +++ b/include/linux/decompress/mm.h @@ -16,7 +16,7 @@ /* * Some architectures want to ensure there is no local data in their - * pre-boot environment, so that data can arbitarily relocated (via + * pre-boot environment, so that data can arbitrarily relocated (via * GOT references). This is achieved by defining STATIC_RW_DATA to * be null. */ diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index 9bebd7f16ef1..eee7addec282 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -434,7 +434,7 @@ struct dma_tx_state { * zero or error code * @device_tx_status: poll for transaction completion, the optional * txstate parameter can be supplied with a pointer to get a - * struct with auxilary transfer status information, otherwise the call + * struct with auxiliary transfer status information, otherwise the call * will just return a simple status code * @device_issue_pending: push pending transactions to hardware */ diff --git a/include/linux/drbd.h b/include/linux/drbd.h index d18d673ebc78..cec467f5d676 100644 --- a/include/linux/drbd.h +++ b/include/linux/drbd.h @@ -36,7 +36,7 @@ #include #include -/* Altough the Linux source code makes a difference between +/* Although the Linux source code makes a difference between generic endianness and the bitfields' endianness, there is no architecture as of Linux-2.6.24-rc4 where the bitfileds' endianness does not match the generic endianness. */ @@ -184,7 +184,7 @@ enum drbd_conns { /* These temporal states are all used on the way * from >= C_CONNECTED to Unconnected. * The 'disconnect reason' states - * I do not allow to change beween them. */ + * I do not allow to change between them. */ C_TIMEOUT, C_BROKEN_PIPE, C_NETWORK_FAILURE, diff --git a/include/linux/drbd_limits.h b/include/linux/drbd_limits.h index bb264a5732de..246f576c981d 100644 --- a/include/linux/drbd_limits.h +++ b/include/linux/drbd_limits.h @@ -43,7 +43,7 @@ /* net { */ /* timeout, unit centi seconds - * more than one minute timeout is not usefull */ + * more than one minute timeout is not useful */ #define DRBD_TIMEOUT_MIN 1 #define DRBD_TIMEOUT_MAX 600 #define DRBD_TIMEOUT_DEF 60 /* 6 seconds */ @@ -68,7 +68,7 @@ #define DRBD_MAX_EPOCH_SIZE_MAX 20000 #define DRBD_MAX_EPOCH_SIZE_DEF 2048 - /* I don't think that a tcp send buffer of more than 10M is usefull */ + /* I don't think that a tcp send buffer of more than 10M is useful */ #define DRBD_SNDBUF_SIZE_MIN 0 #define DRBD_SNDBUF_SIZE_MAX (10<<20) #define DRBD_SNDBUF_SIZE_DEF 0 @@ -101,7 +101,7 @@ #define DRBD_RATE_MAX (4 << 20) #define DRBD_RATE_DEF 250 /* kb/second */ - /* less than 7 would hit performance unneccessarily. + /* less than 7 would hit performance unnecessarily. * 3833 is the largest prime that still does fit * into 64 sectors of activity log */ #define DRBD_AL_EXTENTS_MIN 7 diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h index c8fcbdd2b0e7..dc80d8294247 100644 --- a/include/linux/ethtool.h +++ b/include/linux/ethtool.h @@ -614,7 +614,7 @@ struct ethtool_sfeatures { * values of corresponding bits in features[].requested. Bits in .requested * not set in .valid or not changeable are ignored. * - * Returns %EINVAL when .valid contains undefined or never-changable bits + * Returns %EINVAL when .valid contains undefined or never-changeable bits * or size is not equal to required number of features words (32-bit blocks). * Returns >= 0 if request was completed; bits set in the value mean: * %ETHTOOL_F_UNSUPPORTED - there were bits set in .valid that are not diff --git a/include/linux/eventpoll.h b/include/linux/eventpoll.h index f6856a5a1d4b..f362733186a5 100644 --- a/include/linux/eventpoll.h +++ b/include/linux/eventpoll.h @@ -1,5 +1,5 @@ /* - * include/linux/eventpoll.h ( Efficent event polling implementation ) + * include/linux/eventpoll.h ( Efficient event polling implementation ) * Copyright (C) 2001,...,2006 Davide Libenzi * * This program is free software; you can redistribute it and/or modify diff --git a/include/linux/exportfs.h b/include/linux/exportfs.h index 33a42f24b275..3a4cef5322dc 100644 --- a/include/linux/exportfs.h +++ b/include/linux/exportfs.h @@ -120,7 +120,7 @@ struct fid { * encode_fh: * @encode_fh should store in the file handle fragment @fh (using at most * @max_len bytes) information that can be used by @decode_fh to recover the - * file refered to by the &struct dentry @de. If the @connectable flag is + * file referred to by the &struct dentry @de. If the @connectable flag is * set, the encode_fh() should store sufficient information so that a good * attempt can be made to find not only the file but also it's place in the * filesystem. This typically means storing a reference to de->d_parent in diff --git a/include/linux/fb.h b/include/linux/fb.h index b2a36391d2a1..df728c1c29ed 100644 --- a/include/linux/fb.h +++ b/include/linux/fb.h @@ -534,14 +534,14 @@ struct fb_cursor_user { #define FB_EVENT_GET_CONSOLE_MAP 0x07 /* CONSOLE-SPECIFIC: set console to framebuffer mapping */ #define FB_EVENT_SET_CONSOLE_MAP 0x08 -/* A hardware display blank change occured */ +/* A hardware display blank change occurred */ #define FB_EVENT_BLANK 0x09 /* Private modelist is to be replaced */ #define FB_EVENT_NEW_MODELIST 0x0A /* The resolution of the passed in fb_info about to change and all vc's should be changed */ #define FB_EVENT_MODE_CHANGE_ALL 0x0B -/* A software display blank change occured */ +/* A software display blank change occurred */ #define FB_EVENT_CONBLANK 0x0C /* Get drawing requirements */ #define FB_EVENT_GET_REQ 0x0D @@ -805,7 +805,7 @@ struct fb_tile_ops { /* A driver may set this flag to indicate that it does want a set_par to be * called every time when fbcon_switch is executed. The advantage is that with * this flag set you can really be sure that set_par is always called before - * any of the functions dependant on the correct hardware state or altering + * any of the functions dependent on the correct hardware state or altering * that state, even if you are using some broken X releases. The disadvantage * is that it introduces unwanted delays to every console switch if set_par * is slow. It is a good idea to try this flag in the drivers initialization @@ -877,7 +877,7 @@ struct fb_info { void *fbcon_par; /* fbcon use-only private area */ /* From here on everything is device dependent */ void *par; - /* we need the PCI or similiar aperture base/size not + /* we need the PCI or similar aperture base/size not smem_start/size as smem_start may just be an object allocated inside the aperture so may not actually overlap */ struct apertures_struct { diff --git a/include/linux/firewire-cdev.h b/include/linux/firewire-cdev.h index 59ea406be7f6..4ff09889c5c0 100644 --- a/include/linux/firewire-cdev.h +++ b/include/linux/firewire-cdev.h @@ -900,7 +900,7 @@ struct fw_cdev_get_cycle_timer2 { /** * struct fw_cdev_allocate_iso_resource - (De)allocate a channel or bandwidth - * @closure: Passed back to userspace in correponding iso resource events + * @closure: Passed back to userspace in corresponding iso resource events * @channels: Isochronous channels of which one is to be (de)allocated * @bandwidth: Isochronous bandwidth units to be (de)allocated * @handle: Handle to the allocation, written by the kernel (only valid in diff --git a/include/linux/fs.h b/include/linux/fs.h index 52f283c1edb2..f03632d2ac18 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -465,7 +465,7 @@ struct iattr { struct timespec ia_ctime; /* - * Not an attribute, but an auxilary info for filesystems wanting to + * Not an attribute, but an auxiliary info for filesystems wanting to * implement an ftruncate() like method. NOTE: filesystem should * check for (ia_valid & ATTR_FILE), and not for (ia_file != NULL). */ @@ -647,7 +647,7 @@ struct address_space { } __attribute__((aligned(sizeof(long)))); /* * On most architectures that alignment is already the case; but - * must be enforced here for CRIS, to let the least signficant bit + * must be enforced here for CRIS, to let the least significant bit * of struct page's "mapping" pointer be used for PAGE_MAPPING_ANON. */ diff --git a/include/linux/fscache-cache.h b/include/linux/fscache-cache.h index b8581c09d19f..76427e688d15 100644 --- a/include/linux/fscache-cache.h +++ b/include/linux/fscache-cache.h @@ -236,7 +236,7 @@ struct fscache_cache_ops { /* unpin an object in the cache */ void (*unpin_object)(struct fscache_object *object); - /* store the updated auxilliary data on an object */ + /* store the updated auxiliary data on an object */ void (*update_object)(struct fscache_object *object); /* discard the resources pinned by an object and effect retirement if diff --git a/include/linux/fscache.h b/include/linux/fscache.h index ec0dad5ab90f..7c4d72f5581f 100644 --- a/include/linux/fscache.h +++ b/include/linux/fscache.h @@ -102,9 +102,9 @@ struct fscache_cookie_def { */ void (*get_attr)(const void *cookie_netfs_data, uint64_t *size); - /* get the auxilliary data from netfs data + /* get the auxiliary data from netfs data * - this function can be absent if the index carries no state data - * - should store the auxilliary data in the buffer + * - should store the auxiliary data in the buffer * - should return the amount of amount stored * - not permitted to return an error * - the netfs data from the cookie being used as the source is @@ -117,7 +117,7 @@ struct fscache_cookie_def { /* consult the netfs about the state of an object * - this function can be absent if the index carries no state data * - the netfs data from the cookie being used as the target is - * presented, as is the auxilliary data + * presented, as is the auxiliary data */ enum fscache_checkaux (*check_aux)(void *cookie_netfs_data, const void *data, diff --git a/include/linux/hid.h b/include/linux/hid.h index bb29bb1dbd2f..42f7e2fb501f 100644 --- a/include/linux/hid.h +++ b/include/linux/hid.h @@ -799,7 +799,7 @@ static inline int __must_check hid_parse(struct hid_device *hdev) * * Call this in probe function *after* hid_parse. This will setup HW buffers * and start the device (if not deffered to device open). hid_hw_stop must be - * called if this was successfull. + * called if this was successful. */ static inline int __must_check hid_hw_start(struct hid_device *hdev, unsigned int connect_mask) diff --git a/include/linux/hp_sdc.h b/include/linux/hp_sdc.h index 9db3d454887f..d392975d8887 100644 --- a/include/linux/hp_sdc.h +++ b/include/linux/hp_sdc.h @@ -101,7 +101,7 @@ int hp_sdc_dequeue_transaction(hp_sdc_transaction *this); #define HP_SDC_STATUS_REG 0x40 /* Data from an i8042 register */ #define HP_SDC_STATUS_HILCMD 0x50 /* Command from HIL MLC */ #define HP_SDC_STATUS_HILDATA 0x60 /* Data from HIL MLC */ -#define HP_SDC_STATUS_PUP 0x70 /* Sucessful power-up self test */ +#define HP_SDC_STATUS_PUP 0x70 /* Successful power-up self test */ #define HP_SDC_STATUS_KCOOKED 0x80 /* Key from cooked kbd */ #define HP_SDC_STATUS_KRPG 0xc0 /* Key from Repeat Gen */ #define HP_SDC_STATUS_KMOD_SUP 0x10 /* Shift key is up */ diff --git a/include/linux/i2o.h b/include/linux/i2o.h index 9e7a12d6385d..a6deef4f4f67 100644 --- a/include/linux/i2o.h +++ b/include/linux/i2o.h @@ -826,7 +826,7 @@ static inline struct i2o_message __iomem *i2o_msg_in_to_virt(struct * @c: I2O controller * * This function tries to get a message frame. If no message frame is - * available do not wait until one is availabe (see also i2o_msg_get_wait). + * available do not wait until one is available (see also i2o_msg_get_wait). * The returned pointer to the message frame is not in I/O memory, it is * allocated from a mempool. But because a MFA is allocated from the * controller too it is guaranteed that i2o_msg_post() will never fail. diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h index 943c9b53695c..bea0ac750712 100644 --- a/include/linux/interrupt.h +++ b/include/linux/interrupt.h @@ -98,7 +98,7 @@ typedef irqreturn_t (*irq_handler_t)(int, void *); * @next: pointer to the next irqaction for shared interrupts * @irq: interrupt number * @dir: pointer to the proc/irq/NN/name entry - * @thread_fn: interupt handler function for threaded interrupts + * @thread_fn: interrupt handler function for threaded interrupts * @thread: thread pointer for threaded interrupts * @thread_flags: flags related to @thread * @thread_mask: bitmask for keeping track of @thread activity @@ -484,7 +484,7 @@ extern void __send_remote_softirq(struct call_single_data *cp, int cpu, Properties: * If tasklet_schedule() is called, then tasklet is guaranteed to be executed on some cpu at least once after this. - * If the tasklet is already scheduled, but its excecution is still not + * If the tasklet is already scheduled, but its execution is still not started, it will be executed only once. * If this tasklet is already running on another CPU (or schedule is called from tasklet itself), it is rescheduled for later. diff --git a/include/linux/ipmi.h b/include/linux/ipmi.h index 045f2f275cd0..ca85cf894e33 100644 --- a/include/linux/ipmi.h +++ b/include/linux/ipmi.h @@ -111,7 +111,7 @@ struct ipmi_ipmb_addr { * A LAN Address. This is an address to/from a LAN interface bridged * by the BMC, not an address actually out on the LAN. * - * A concious decision was made here to deviate slightly from the IPMI + * A conscious decision was made here to deviate slightly from the IPMI * spec. We do not use rqSWID and rsSWID like it shows in the * message. Instead, we use remote_SWID and local_SWID. This means * that any message (a request or response) from another device will @@ -259,7 +259,7 @@ struct ipmi_recv_msg { void (*done)(struct ipmi_recv_msg *msg); /* Place-holder for the data, don't make any assumptions about - the size or existance of this, since it may change. */ + the size or existence of this, since it may change. */ unsigned char msg_data[IPMI_MAX_MSG_LENGTH]; }; diff --git a/include/linux/isdn/hdlc.h b/include/linux/isdn/hdlc.h index 4b3ecc40889a..96521370c782 100644 --- a/include/linux/isdn/hdlc.h +++ b/include/linux/isdn/hdlc.h @@ -2,7 +2,7 @@ * hdlc.h -- General purpose ISDN HDLC decoder. * * Implementation of a HDLC decoder/encoder in software. - * Neccessary because some ISDN devices don't have HDLC + * Necessary because some ISDN devices don't have HDLC * controllers. * * Copyright (C) diff --git a/include/linux/ixjuser.h b/include/linux/ixjuser.h index 88b45895746d..94ab5e942e53 100644 --- a/include/linux/ixjuser.h +++ b/include/linux/ixjuser.h @@ -50,7 +50,7 @@ * IOCTL's used for the Quicknet Telephony Cards * * If you use the IXJCTL_TESTRAM command, the card must be power cycled to -* reset the SRAM values before futher use. +* reset the SRAM values before further use. * ******************************************************************************/ diff --git a/include/linux/jiffies.h b/include/linux/jiffies.h index 922aa313c9f9..f97672a36fa8 100644 --- a/include/linux/jiffies.h +++ b/include/linux/jiffies.h @@ -42,7 +42,7 @@ /* LATCH is used in the interval timer and ftape setup. */ #define LATCH ((CLOCK_TICK_RATE + HZ/2) / HZ) /* For divider */ -/* Suppose we want to devide two numbers NOM and DEN: NOM/DEN, then we can +/* Suppose we want to divide two numbers NOM and DEN: NOM/DEN, then we can * improve accuracy by shifting LSH bits, hence calculating: * (NOM << LSH) / DEN * This however means trouble for large NOM, because (NOM << LSH) may no diff --git a/include/linux/ktime.h b/include/linux/ktime.h index e1ceaa9b36bb..603bec2913b0 100644 --- a/include/linux/ktime.h +++ b/include/linux/ktime.h @@ -35,7 +35,7 @@ * * On 32-bit CPUs an optimized representation of the timespec structure * is used to avoid expensive conversions from and to timespecs. The - * endian-aware order of the tv struct members is choosen to allow + * endian-aware order of the tv struct members is chosen to allow * mathematical operations on the tv64 member of the union too, which * for certain operations produces better code. * @@ -158,7 +158,7 @@ static inline ktime_t ktime_set(const long secs, const unsigned long nsecs) * @lhs: minuend * @rhs: subtrahend * - * Returns the remainder of the substraction + * Returns the remainder of the subtraction */ static inline ktime_t ktime_sub(const ktime_t lhs, const ktime_t rhs) { diff --git a/include/linux/led-lm3530.h b/include/linux/led-lm3530.h index bb69d20da0dc..58592fa67d24 100644 --- a/include/linux/led-lm3530.h +++ b/include/linux/led-lm3530.h @@ -41,7 +41,7 @@ #define LM3530_RAMP_TIME_8s (7) /* ALS Resistor Select */ -#define LM3530_ALS_IMPD_Z (0x00) /* ALS Impedence */ +#define LM3530_ALS_IMPD_Z (0x00) /* ALS Impedance */ #define LM3530_ALS_IMPD_13_53kOhm (0x01) #define LM3530_ALS_IMPD_9_01kOhm (0x02) #define LM3530_ALS_IMPD_5_41kOhm (0x03) diff --git a/include/linux/libata.h b/include/linux/libata.h index c71f46960f39..7f675aa81d87 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -364,7 +364,7 @@ enum { ATA_EH_CMD_TIMEOUT_TABLE_SIZE = 6, /* Horkage types. May be set by libata or controller on drives - (some horkage may be drive/controller pair dependant */ + (some horkage may be drive/controller pair dependent */ ATA_HORKAGE_DIAGNOSTIC = (1 << 0), /* Failed boot diag */ ATA_HORKAGE_NODMA = (1 << 1), /* DMA problems */ diff --git a/include/linux/lru_cache.h b/include/linux/lru_cache.h index 78fbf24f357a..6a4fab7c6e09 100644 --- a/include/linux/lru_cache.h +++ b/include/linux/lru_cache.h @@ -148,7 +148,7 @@ write intent log information, three of which are mentioned here. * * DRBD currently (May 2009) only uses 61 elements on the resync lru_cache * (total memory usage 2 pages), and up to 3833 elements on the act_log - * lru_cache, totalling ~215 kB for 64bit architechture, ~53 pages. + * lru_cache, totalling ~215 kB for 64bit architecture, ~53 pages. * * We usually do not actually free these objects again, but only "recycle" * them, as the change "index: -old_label, +LC_FREE" would need a transaction diff --git a/include/linux/mfd/wm8350/pmic.h b/include/linux/mfd/wm8350/pmic.h index e786fe9841ef..579b50ca2e02 100644 --- a/include/linux/mfd/wm8350/pmic.h +++ b/include/linux/mfd/wm8350/pmic.h @@ -1,5 +1,5 @@ /* - * pmic.h -- Power Managment Driver for Wolfson WM8350 PMIC + * pmic.h -- Power Management Driver for Wolfson WM8350 PMIC * * Copyright 2007 Wolfson Microelectronics PLC * diff --git a/include/linux/mm.h b/include/linux/mm.h index 7606d7db96c9..692dbae6ffa7 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -608,7 +608,7 @@ static inline pte_t maybe_mkwrite(pte_t pte, struct vm_area_struct *vma) #endif /* - * Define the bit shifts to access each section. For non-existant + * Define the bit shifts to access each section. For non-existent * sections we define the shift as 0; that plus a 0 mask ensures * the compiler will optimise away reference to them. */ diff --git a/include/linux/mmc/dw_mmc.h b/include/linux/mmc/dw_mmc.h index c0207a770476..bdd7ceeb99e4 100644 --- a/include/linux/mmc/dw_mmc.h +++ b/include/linux/mmc/dw_mmc.h @@ -98,7 +98,7 @@ struct mmc_data; * EVENT_DATA_COMPLETE is set in @pending_events, all data-related * interrupts must be disabled and @data_status updated with a * snapshot of SR. Similarly, before EVENT_CMD_COMPLETE is set, the - * CMDRDY interupt must be disabled and @cmd_status updated with a + * CMDRDY interrupt must be disabled and @cmd_status updated with a * snapshot of SR, and before EVENT_XFER_COMPLETE can be set, the * bytes_xfered field of @data must be written. This is ensured by * using barriers. @@ -172,7 +172,7 @@ struct dw_mci_dma_ops { #define DW_MCI_QUIRK_IDMAC_DTO BIT(0) /* delay needed between retries on some 2.11a implementations */ #define DW_MCI_QUIRK_RETRY_DELAY BIT(1) -/* High Speed Capable - Supports HS cards (upto 50MHz) */ +/* High Speed Capable - Supports HS cards (up to 50MHz) */ #define DW_MCI_QUIRK_HIGHSPEED BIT(2) /* Unreliable card detection */ #define DW_MCI_QUIRK_BROKEN_CARD_DETECTION BIT(3) diff --git a/include/linux/mroute6.h b/include/linux/mroute6.h index 9d2deb200f54..a3759cb0ac10 100644 --- a/include/linux/mroute6.h +++ b/include/linux/mroute6.h @@ -249,7 +249,7 @@ static inline int ip6mr_sk_done(struct sock *sk) * Structure used to communicate from kernel to multicast router. * We'll overlay the structure onto an MLD header (not an IPv6 heder like igmpmsg{} * used for IPv4 implementation). This is because this structure will be passed via an - * IPv6 raw socket, on wich an application will only receiver the payload i.e the data after + * IPv6 raw socket, on which an application will only receiver the payload i.e the data after * the IPv6 header and all the extension headers. (See section 3 of RFC 3542) */ diff --git a/include/linux/mtd/cfi.h b/include/linux/mtd/cfi.h index 0d823f2dd667..d24925492972 100644 --- a/include/linux/mtd/cfi.h +++ b/include/linux/mtd/cfi.h @@ -308,7 +308,7 @@ static inline uint32_t cfi_build_cmd_addr(uint32_t cmd_ofs, addr = (cmd_ofs * type) * interleave; - /* Modify the unlock address if we are in compatiblity mode. + /* Modify the unlock address if we are in compatibility mode. * For 16bit devices on 8 bit busses * and 32bit devices on 16 bit busses * set the low bit of the alternating bit sequence of the address. diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index ae67ef56a8f5..d44192740f6f 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -416,9 +416,9 @@ struct nand_buffers { * @select_chip: [REPLACEABLE] select chip nr * @block_bad: [REPLACEABLE] check, if the block is bad * @block_markbad: [REPLACEABLE] mark the block bad - * @cmd_ctrl: [BOARDSPECIFIC] hardwarespecific funtion for controlling + * @cmd_ctrl: [BOARDSPECIFIC] hardwarespecific function for controlling * ALE/CLE/nCE. Also used to write command and address - * @init_size: [BOARDSPECIFIC] hardwarespecific funtion for setting + * @init_size: [BOARDSPECIFIC] hardwarespecific function for setting * mtd->oobsize, mtd->writesize and so on. * @id_data contains the 8 bytes values of NAND_CMD_READID. * Return with the bus width. @@ -437,7 +437,7 @@ struct nand_buffers { * @erase_cmd: [INTERN] erase command write function, selectable due * to AND support. * @scan_bbt: [REPLACEABLE] function to scan bad block table - * @chip_delay: [BOARDSPECIFIC] chip dependent delay for transfering + * @chip_delay: [BOARDSPECIFIC] chip dependent delay for transferring * data from array to read regs (tR). * @state: [INTERN] the current state of the NAND device * @oob_poi: poison value buffer diff --git a/include/linux/mtd/xip.h b/include/linux/mtd/xip.h index 36efcba15ecd..abed4dec5c2f 100644 --- a/include/linux/mtd/xip.h +++ b/include/linux/mtd/xip.h @@ -51,7 +51,7 @@ * return in usecs the elapsed timebetween now and the reference x as * returned by xip_currtime(). * - * note 1: convertion to usec can be approximated, as long as the + * note 1: conversion to usec can be approximated, as long as the * returned value is <= the real elapsed time. * note 2: this should be able to cope with a few seconds without * overflowing. diff --git a/include/linux/netfilter/nf_conntrack_proto_gre.h b/include/linux/netfilter/nf_conntrack_proto_gre.h index 2a10efda17fb..6a0664c0c451 100644 --- a/include/linux/netfilter/nf_conntrack_proto_gre.h +++ b/include/linux/netfilter/nf_conntrack_proto_gre.h @@ -60,7 +60,7 @@ struct gre_hdr_pptp { __be16 payload_len; /* size of ppp payload, not inc. gre header */ __be16 call_id; /* peer's call_id for this session */ __be32 seq; /* sequence number. Present if S==1 */ - __be32 ack; /* seq number of highest packet recieved by */ + __be32 ack; /* seq number of highest packet received by */ /* sender in this session */ }; diff --git a/include/linux/netfilter_bridge/ebtables.h b/include/linux/netfilter_bridge/ebtables.h index 1c6f0c5f530e..8797ed16feb2 100644 --- a/include/linux/netfilter_bridge/ebtables.h +++ b/include/linux/netfilter_bridge/ebtables.h @@ -92,7 +92,7 @@ struct ebt_entries { /* This is a hack to make a difference between an ebt_entry struct and an * ebt_entries struct when traversing the entries from start to end. - * Using this simplifies the code alot, while still being able to use + * Using this simplifies the code a lot, while still being able to use * ebt_entries. * Contrary, iptables doesn't use something like ebt_entries and therefore uses * different techniques for naming the policy and such. So, iptables doesn't diff --git a/include/linux/nfs4.h b/include/linux/nfs4.h index b528f6d4b860..178fafe0ff93 100644 --- a/include/linux/nfs4.h +++ b/include/linux/nfs4.h @@ -359,7 +359,7 @@ enum nfsstat4 { /* Error 10073 is unused. */ NFS4ERR_CLIENTID_BUSY = 10074, /* clientid has state */ NFS4ERR_PNFS_IO_HOLE = 10075, /* IO to _SPARSE file hole */ - NFS4ERR_SEQ_FALSE_RETRY = 10076, /* retry not origional */ + NFS4ERR_SEQ_FALSE_RETRY = 10076, /* retry not original */ NFS4ERR_BAD_HIGH_SLOT = 10077, /* sequence arg bad */ NFS4ERR_DEADSESSION = 10078, /* persistent session dead */ NFS4ERR_ENCR_ALG_UNSUPP = 10079, /* SSV alg mismatch */ diff --git a/include/linux/nfsd/export.h b/include/linux/nfsd/export.h index bd316159278c..84058ec69390 100644 --- a/include/linux/nfsd/export.h +++ b/include/linux/nfsd/export.h @@ -80,7 +80,7 @@ struct nfsd4_fs_locations { /* * We keep an array of pseudoflavors with the export, in order from most - * to least preferred. For the forseeable future, we don't expect more + * to least preferred. For the foreseeable future, we don't expect more * than the eight pseudoflavors null, unix, krb5, krb5i, krb5p, skpm3, * spkm3i, and spkm3p (and using all 8 at once should be rare). */ diff --git a/include/linux/nfsd/nfsfh.h b/include/linux/nfsd/nfsfh.h index 80d55bbc5365..f76d80ccec10 100644 --- a/include/linux/nfsd/nfsfh.h +++ b/include/linux/nfsd/nfsfh.h @@ -49,7 +49,7 @@ struct nfs_fhbase_old { * * The auth_type field specifies how the filehandle can be authenticated * This might allow a file to be confirmed to be in a writable part of a - * filetree without checking the path from it upto the root. + * filetree without checking the path from it up to the root. * Current values: * 0 - No authentication. fb_auth is 0 bytes long * Possible future values: diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index 30022189104d..bbfa1093f606 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -414,7 +414,7 @@ * @__NL80211_CMD_AFTER_LAST: internal use */ enum nl80211_commands { -/* don't change the order or add anything inbetween, this is ABI! */ +/* don't change the order or add anything between, this is ABI! */ NL80211_CMD_UNSPEC, NL80211_CMD_GET_WIPHY, /* can dump */ @@ -860,7 +860,7 @@ enum nl80211_commands { * This can be used to mask out antennas which are not attached or should * not be used for receiving. If an antenna is not selected in this bitmap * the hardware should not be configured to receive on this antenna. - * For a more detailed descripton see @NL80211_ATTR_WIPHY_ANTENNA_TX. + * For a more detailed description see @NL80211_ATTR_WIPHY_ANTENNA_TX. * * @NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX: Bitmap of antennas which are available * for configuration as TX antennas via the above parameters. @@ -891,7 +891,7 @@ enum nl80211_commands { * @__NL80211_ATTR_AFTER_LAST: internal use */ enum nl80211_attrs { -/* don't change the order or add anything inbetween, this is ABI! */ +/* don't change the order or add anything between, this is ABI! */ NL80211_ATTR_UNSPEC, NL80211_ATTR_WIPHY, @@ -1419,7 +1419,7 @@ enum nl80211_bitrate_attr { * 802.11 country information element with regulatory information it * thinks we should consider. cfg80211 only processes the country * code from the IE, and relies on the regulatory domain information - * structure pased by userspace (CRDA) from our wireless-regdb. + * structure passed by userspace (CRDA) from our wireless-regdb. * If a channel is enabled but the country code indicates it should * be disabled we disable the channel and re-enable it upon disassociation. */ @@ -1598,7 +1598,7 @@ enum nl80211_mntr_flags { * @NL80211_MESHCONF_RETRY_TIMEOUT: specifies the initial retry timeout in * millisecond units, used by the Peer Link Open message * - * @NL80211_MESHCONF_CONFIRM_TIMEOUT: specifies the inital confirm timeout, in + * @NL80211_MESHCONF_CONFIRM_TIMEOUT: specifies the initial confirm timeout, in * millisecond units, used by the peer link management to close a peer link * * @NL80211_MESHCONF_HOLDING_TIMEOUT: specifies the holding timeout, in diff --git a/include/linux/notifier.h b/include/linux/notifier.h index 2026f9e1ceb8..621dfa16acc0 100644 --- a/include/linux/notifier.h +++ b/include/linux/notifier.h @@ -237,7 +237,7 @@ static inline int notifier_to_errno(int ret) * enabling interrupts. Must not sleep, * must not fail */ -/* Used for CPU hotplug events occuring while tasks are frozen due to a suspend +/* Used for CPU hotplug events occurring while tasks are frozen due to a suspend * operation in progress */ #define CPU_TASKS_FROZEN 0x0010 diff --git a/include/linux/omap3isp.h b/include/linux/omap3isp.h index 150822b4dbff..b6111f8cd49a 100644 --- a/include/linux/omap3isp.h +++ b/include/linux/omap3isp.h @@ -250,7 +250,7 @@ enum omap3isp_h3a_af_rgbpos { /* Contains the information regarding the Horizontal Median Filter */ struct omap3isp_h3a_af_hmf { __u8 enable; /* Status of Horizontal Median Filter */ - __u8 threshold; /* Threshhold Value for Horizontal Median Filter */ + __u8 threshold; /* Threshold Value for Horizontal Median Filter */ }; /* Contains the information regarding the IIR Filters */ diff --git a/include/linux/page_cgroup.h b/include/linux/page_cgroup.h index f5de21de31dd..961ecc7d30bc 100644 --- a/include/linux/page_cgroup.h +++ b/include/linux/page_cgroup.h @@ -138,7 +138,7 @@ static inline void move_unlock_page_cgroup(struct page_cgroup *pc, #define PCG_ARRAYID_OFFSET (BITS_PER_LONG - PCG_ARRAYID_WIDTH) /* - * Zero the shift count for non-existant fields, to prevent compiler + * Zero the shift count for non-existent fields, to prevent compiler * warnings and ensure references are optimized away. */ #define PCG_ARRAYID_SHIFT (PCG_ARRAYID_OFFSET * (PCG_ARRAYID_WIDTH != 0)) diff --git a/include/linux/pci_regs.h b/include/linux/pci_regs.h index 5b7e6b1ba54f..be01380f798a 100644 --- a/include/linux/pci_regs.h +++ b/include/linux/pci_regs.h @@ -223,7 +223,7 @@ #define PCI_PM_CAP_PME_CLOCK 0x0008 /* PME clock required */ #define PCI_PM_CAP_RESERVED 0x0010 /* Reserved field */ #define PCI_PM_CAP_DSI 0x0020 /* Device specific initialization */ -#define PCI_PM_CAP_AUX_POWER 0x01C0 /* Auxilliary power support mask */ +#define PCI_PM_CAP_AUX_POWER 0x01C0 /* Auxiliary power support mask */ #define PCI_PM_CAP_D1 0x0200 /* D1 power state support */ #define PCI_PM_CAP_D2 0x0400 /* D2 power state support */ #define PCI_PM_CAP_PME 0x0800 /* PME pin supported */ @@ -435,7 +435,7 @@ #define PCI_EXP_LNKCAP_L0SEL 0x00007000 /* L0s Exit Latency */ #define PCI_EXP_LNKCAP_L1EL 0x00038000 /* L1 Exit Latency */ #define PCI_EXP_LNKCAP_CLKPM 0x00040000 /* L1 Clock Power Management */ -#define PCI_EXP_LNKCAP_SDERC 0x00080000 /* Suprise Down Error Reporting Capable */ +#define PCI_EXP_LNKCAP_SDERC 0x00080000 /* Surprise Down Error Reporting Capable */ #define PCI_EXP_LNKCAP_DLLLARC 0x00100000 /* Data Link Layer Link Active Reporting Capable */ #define PCI_EXP_LNKCAP_LBNC 0x00200000 /* Link Bandwidth Notification Capability */ #define PCI_EXP_LNKCAP_PN 0xff000000 /* Port Number */ diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index 311b4dc785a1..393b60c71732 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -662,7 +662,7 @@ struct pmu { int (*commit_txn) (struct pmu *pmu); /* optional */ /* * Will cancel the transaction, assumes ->del() is called - * for each successfull ->add() during the transaction. + * for each successful ->add() during the transaction. */ void (*cancel_txn) (struct pmu *pmu); /* optional */ }; diff --git a/include/linux/pid.h b/include/linux/pid.h index efceda0a51b1..31afb7ecbe1f 100644 --- a/include/linux/pid.h +++ b/include/linux/pid.h @@ -21,7 +21,7 @@ enum pid_type * quickly from the numeric pid value. The attached processes may be * quickly accessed by following pointers from struct pid. * - * Storing pid_t values in the kernel and refering to them later has a + * Storing pid_t values in the kernel and referring to them later has a * problem. The process originally with that pid may have exited and the * pid allocator wrapped, and another process could have come along * and been assigned that pid. diff --git a/include/linux/pkt_sched.h b/include/linux/pkt_sched.h index b1032a3fafdc..3a02e0208575 100644 --- a/include/linux/pkt_sched.h +++ b/include/linux/pkt_sched.h @@ -223,7 +223,7 @@ struct tc_gred_qopt { __u32 limit; /* HARD maximal queue length (bytes) */ __u32 qth_min; /* Min average length threshold (bytes) */ __u32 qth_max; /* Max average length threshold (bytes) */ - __u32 DP; /* upto 2^32 DPs */ + __u32 DP; /* up to 2^32 DPs */ __u32 backlog; __u32 qave; __u32 forced; diff --git a/include/linux/poll.h b/include/linux/poll.h index 1a2ccd6f3823..cf40010ce0cd 100644 --- a/include/linux/poll.h +++ b/include/linux/poll.h @@ -82,7 +82,7 @@ static inline int poll_schedule(struct poll_wqueues *pwq, int state) } /* - * Scaleable version of the fd_set. + * Scalable version of the fd_set. */ typedef struct { diff --git a/include/linux/prefetch.h b/include/linux/prefetch.h index af7c36a5a521..a3bfbdf63d32 100644 --- a/include/linux/prefetch.h +++ b/include/linux/prefetch.h @@ -29,7 +29,7 @@ prefetchw(x) - prefetches the cacheline at "x" for write spin_lock_prefetch(x) - prefetches the spinlock *x for taking - there is also PREFETCH_STRIDE which is the architecure-prefered + there is also PREFETCH_STRIDE which is the architecure-preferred "lookahead" size for prefetching streamed operations. */ diff --git a/include/linux/pxa2xx_ssp.h b/include/linux/pxa2xx_ssp.h index 2f691e4e6222..44835fb39793 100644 --- a/include/linux/pxa2xx_ssp.h +++ b/include/linux/pxa2xx_ssp.h @@ -122,7 +122,7 @@ #define SSCR1_TSRE (1 << 21) /* Transmit Service Request Enable */ #define SSCR1_RSRE (1 << 20) /* Receive Service Request Enable */ #define SSCR1_TINTE (1 << 19) /* Receiver Time-out Interrupt enable */ -#define SSCR1_PINTE (1 << 18) /* Peripheral Trailing Byte Interupt Enable */ +#define SSCR1_PINTE (1 << 18) /* Peripheral Trailing Byte Interrupt Enable */ #define SSCR1_IFS (1 << 16) /* Invert Frame Signal */ #define SSCR1_STRF (1 << 15) /* Select FIFO or EFWR */ #define SSCR1_EFWR (1 << 14) /* Enable FIFO Write/Read */ diff --git a/include/linux/raid/md_p.h b/include/linux/raid/md_p.h index ffa2efbbe382..75cbf4f62fe8 100644 --- a/include/linux/raid/md_p.h +++ b/include/linux/raid/md_p.h @@ -251,7 +251,7 @@ struct mdp_superblock_1 { __le64 utime; /* 40 bits second, 24 btes microseconds */ __le64 events; /* incremented when superblock updated */ __le64 resync_offset; /* data before this offset (from data_offset) known to be in sync */ - __le32 sb_csum; /* checksum upto devs[max_dev] */ + __le32 sb_csum; /* checksum up to devs[max_dev] */ __le32 max_dev; /* size of devs[] array to consider */ __u8 pad3[64-32]; /* set to 0 when writing */ diff --git a/include/linux/reiserfs_fs.h b/include/linux/reiserfs_fs.h index 0a3842aacba9..eca75df00fed 100644 --- a/include/linux/reiserfs_fs.h +++ b/include/linux/reiserfs_fs.h @@ -1557,7 +1557,7 @@ struct tree_balance { /* When inserting an item. */ #define M_INSERT 'i' /* When inserting into (directories only) or appending onto an already - existant item. */ + existent item. */ #define M_PASTE 'p' /* When deleting an item. */ #define M_DELETE 'd' diff --git a/include/linux/sched.h b/include/linux/sched.h index 83bd2e2982fc..4ec2c027e92c 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -854,7 +854,7 @@ extern int __weak arch_sd_sibiling_asym_packing(void); /* * Optimise SD flags for power savings: - * SD_BALANCE_NEWIDLE helps agressive task consolidation and power savings. + * SD_BALANCE_NEWIDLE helps aggressive task consolidation and power savings. * Keep default SD flags if sched_{smt,mc}_power_saving=0 */ diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 239083bfea13..b759896d9754 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -474,7 +474,7 @@ static inline void skb_dst_set(struct sk_buff *skb, struct dst_entry *dst) extern void skb_dst_set_noref(struct sk_buff *skb, struct dst_entry *dst); /** - * skb_dst_is_noref - Test if skb dst isnt refcounted + * skb_dst_is_noref - Test if skb dst isn't refcounted * @skb: buffer */ static inline bool skb_dst_is_noref(const struct sk_buff *skb) diff --git a/include/linux/smc91x.h b/include/linux/smc91x.h index bc21db598c06..76199b75d584 100644 --- a/include/linux/smc91x.h +++ b/include/linux/smc91x.h @@ -21,7 +21,7 @@ #define RPC_LED_10 (0x02) /* LED = 10Mbps link detect */ #define RPC_LED_FD (0x03) /* LED = Full Duplex Mode */ #define RPC_LED_TX_RX (0x04) /* LED = TX or RX packet occurred */ -#define RPC_LED_100 (0x05) /* LED = 100Mbps link dectect */ +#define RPC_LED_100 (0x05) /* LED = 100Mbps link detect */ #define RPC_LED_TX (0x06) /* LED = TX packet occurred */ #define RPC_LED_RX (0x07) /* LED = RX packet occurred */ diff --git a/include/linux/socket.h b/include/linux/socket.h index edbb1d07ddf4..d2b5e982f079 100644 --- a/include/linux/socket.h +++ b/include/linux/socket.h @@ -88,7 +88,7 @@ struct cmsghdr { }; /* - * Ancilliary data object information MACROS + * Ancillary data object information MACROS * Table 5-14 of POSIX 1003.1g */ diff --git a/include/linux/soundcard.h b/include/linux/soundcard.h index 1904afedb82f..fe204fe39f7c 100644 --- a/include/linux/soundcard.h +++ b/include/linux/soundcard.h @@ -1231,7 +1231,7 @@ void seqbuf_dump(void); /* This function must be provided by programs */ #define SEQ_PANNING(dev, voice, pos) SEQ_CONTROL(dev, voice, CTL_PAN, (pos+128) / 2) /* - * Timing and syncronization macros + * Timing and synchronization macros */ #define _TIMER_EVENT(ev, parm) {_SEQ_NEEDBUF(8);\ diff --git a/include/linux/spi/spidev.h b/include/linux/spi/spidev.h index bf0570a84f7a..52d9ed01855f 100644 --- a/include/linux/spi/spidev.h +++ b/include/linux/spi/spidev.h @@ -66,7 +66,7 @@ * are in a different address space (and may be of different sizes in some * cases, such as 32-bit i386 userspace over a 64-bit x86_64 kernel). * Zero-initialize the structure, including currently unused fields, to - * accomodate potential future updates. + * accommodate potential future updates. * * SPI_IOC_MESSAGE gives userspace the equivalent of kernel spi_sync(). * Pass it an array of related transfers, they'll execute together. diff --git a/include/linux/spinlock.h b/include/linux/spinlock.h index 80e535897de6..0b22d51258e6 100644 --- a/include/linux/spinlock.h +++ b/include/linux/spinlock.h @@ -81,7 +81,7 @@ #include /* - * Pull the arch_spin*() functions/declarations (UP-nondebug doesnt need them): + * Pull the arch_spin*() functions/declarations (UP-nondebug doesn't need them): */ #ifdef CONFIG_SMP # include diff --git a/include/linux/stmmac.h b/include/linux/stmmac.h index e10352915698..f29197a4b227 100644 --- a/include/linux/stmmac.h +++ b/include/linux/stmmac.h @@ -26,7 +26,7 @@ #ifndef __STMMAC_PLATFORM_DATA #define __STMMAC_PLATFORM_DATA -/* platfrom data for platfrom device structure's platfrom_data field */ +/* platform data for platform device structure's platform_data field */ /* Private data for the STM on-board ethernet driver */ struct plat_stmmacenet_data { diff --git a/include/linux/stop_machine.h b/include/linux/stop_machine.h index 1808960c5059..092dc9b1ce7d 100644 --- a/include/linux/stop_machine.h +++ b/include/linux/stop_machine.h @@ -105,7 +105,7 @@ static inline int try_stop_cpus(const struct cpumask *cpumask, * @cpus: the cpus to run the @fn() on (NULL = any online cpu) * * Description: This causes a thread to be scheduled on every cpu, - * each of which disables interrupts. The result is that noone is + * each of which disables interrupts. The result is that no one is * holding a spinlock or inside any other preempt-disabled region when * @fn() runs. * diff --git a/include/linux/sunrpc/cache.h b/include/linux/sunrpc/cache.h index 7898ea13de70..8d2eef1a8582 100644 --- a/include/linux/sunrpc/cache.h +++ b/include/linux/sunrpc/cache.h @@ -35,10 +35,10 @@ * Each cache must be registered so that it can be cleaned regularly. * When the cache is unregistered, it is flushed completely. * - * Entries have a ref count and a 'hashed' flag which counts the existance + * Entries have a ref count and a 'hashed' flag which counts the existence * in the hash table. * We only expire entries when refcount is zero. - * Existance in the cache is counted the refcount. + * Existence in the cache is counted the refcount. */ /* Every cache item has a common header that is used diff --git a/include/linux/sunrpc/svcauth_gss.h b/include/linux/sunrpc/svcauth_gss.h index ca7d725861fc..83bbee3f089c 100644 --- a/include/linux/sunrpc/svcauth_gss.h +++ b/include/linux/sunrpc/svcauth_gss.h @@ -2,7 +2,7 @@ * linux/include/linux/sunrpc/svcauth_gss.h * * Bruce Fields - * Copyright (c) 2002 The Regents of the Unviersity of Michigan + * Copyright (c) 2002 The Regents of the University of Michigan */ #ifndef _LINUX_SUNRPC_SVCAUTH_GSS_H diff --git a/include/linux/sysdev.h b/include/linux/sysdev.h index 8a75da551e4e..dfb078db8ebb 100644 --- a/include/linux/sysdev.h +++ b/include/linux/sysdev.h @@ -7,13 +7,13 @@ * We still have a notion of a driver for a system device, because we still * want to perform basic operations on these devices. * - * We also support auxillary drivers binding to devices of a certain class. + * We also support auxiliary drivers binding to devices of a certain class. * * This allows configurable drivers to register themselves for devices of * a certain type. And, it allows class definitions to reside in generic * code while arch-specific code can register specific drivers. * - * Auxillary drivers registered with a NULL cls are registered as drivers + * Auxiliary drivers registered with a NULL cls are registered as drivers * for all system devices, and get notification calls for each device. */ @@ -70,7 +70,7 @@ extern int sysdev_class_create_file(struct sysdev_class *, extern void sysdev_class_remove_file(struct sysdev_class *, struct sysdev_class_attribute *); /** - * Auxillary system device drivers. + * Auxiliary system device drivers. */ struct sysdev_driver { diff --git a/include/linux/timerqueue.h b/include/linux/timerqueue.h index d24aabaca474..a520fd70a59f 100644 --- a/include/linux/timerqueue.h +++ b/include/linux/timerqueue.h @@ -24,7 +24,7 @@ extern struct timerqueue_node *timerqueue_iterate_next( struct timerqueue_node *node); /** - * timerqueue_getnext - Returns the timer with the earlies expiration time + * timerqueue_getnext - Returns the timer with the earliest expiration time * * @head: head of timerqueue * diff --git a/include/linux/tracehook.h b/include/linux/tracehook.h index 3a2e66d88a32..ebcfa4ebdbf8 100644 --- a/include/linux/tracehook.h +++ b/include/linux/tracehook.h @@ -169,7 +169,7 @@ static inline int tracehook_unsafe_exec(struct task_struct *task) * tracehook_tracer_task - return the task that is tracing the given task * @tsk: task to consider * - * Returns NULL if noone is tracing @task, or the &struct task_struct + * Returns NULL if no one is tracing @task, or the &struct task_struct * pointer to its tracer. * * Must called under rcu_read_lock(). The pointer returned might be kept @@ -448,7 +448,7 @@ static inline int tracehook_force_sigpending(void) * * Return zero to check for a real pending signal normally. * Return -1 after releasing the siglock to repeat the check. - * Return a signal number to induce an artifical signal delivery, + * Return a signal number to induce an artificial signal delivery, * setting *@info and *@return_ka to specify its details and behavior. * * The @return_ka->sa_handler value controls the disposition of the diff --git a/include/linux/ucb1400.h b/include/linux/ucb1400.h index 1b4790911052..5c75153f9441 100644 --- a/include/linux/ucb1400.h +++ b/include/linux/ucb1400.h @@ -8,7 +8,7 @@ * Copyright: MontaVista Software, Inc. * * Spliting done by: Marek Vasut - * If something doesnt work and it worked before spliting, e-mail me, + * If something doesn't work and it worked before spliting, e-mail me, * dont bother Nicolas please ;-) * * This program is free software; you can redistribute it and/or modify diff --git a/include/linux/usb.h b/include/linux/usb.h index e63efeb378e3..65f78ca5d88e 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -623,7 +623,7 @@ extern struct usb_host_interface *usb_find_alt_setting( * USB hubs. That makes it stay the same until systems are physically * reconfigured, by re-cabling a tree of USB devices or by moving USB host * controllers. Adding and removing devices, including virtual root hubs - * in host controller driver modules, does not change these path identifers; + * in host controller driver modules, does not change these path identifiers; * neither does rebooting or re-enumerating. These are more useful identifiers * than changeable ("unstable") ones like bus numbers or device addresses. * @@ -793,7 +793,7 @@ struct usbdrv_wrap { * usb_set_intfdata() to associate driver-specific data with the * interface. It may also use usb_set_interface() to specify the * appropriate altsetting. If unwilling to manage the interface, - * return -ENODEV, if genuine IO errors occured, an appropriate + * return -ENODEV, if genuine IO errors occurred, an appropriate * negative errno value. * @disconnect: Called when the interface is no longer accessible, usually * because its device has been (or is being) disconnected or the diff --git a/include/linux/usb/composite.h b/include/linux/usb/composite.h index 3d29a7dcac2d..882a084a8411 100644 --- a/include/linux/usb/composite.h +++ b/include/linux/usb/composite.h @@ -188,7 +188,7 @@ ep_choose(struct usb_gadget *g, struct usb_endpoint_descriptor *hs, * @bind() method is then used to initialize all the functions and then * call @usb_add_function() for them. * - * Those functions would normally be independant of each other, but that's + * Those functions would normally be independent of each other, but that's * not mandatory. CDC WMC devices are an example where functions often * depend on other functions, with some functions subsidiary to others. * Such interdependency may be managed in any way, so long as all of the diff --git a/include/linux/usb/ehci_def.h b/include/linux/usb/ehci_def.h index 656380245198..e49dfd45baa4 100644 --- a/include/linux/usb/ehci_def.h +++ b/include/linux/usb/ehci_def.h @@ -159,7 +159,7 @@ struct ehci_regs { #define USBMODE_CM_IDLE (0<<0) /* idle state */ /* Moorestown has some non-standard registers, partially due to the fact that - * its EHCI controller has both TT and LPM support. HOSTPCx are extentions to + * its EHCI controller has both TT and LPM support. HOSTPCx are extensions to * PORTSCx */ #define HOSTPC0 0x84 /* HOSTPC extension */ diff --git a/include/linux/usb/functionfs.h b/include/linux/usb/functionfs.h index 6f649c13193b..7587ef934ba8 100644 --- a/include/linux/usb/functionfs.h +++ b/include/linux/usb/functionfs.h @@ -45,7 +45,7 @@ struct usb_functionfs_descs_head { * | off | name | type | description | * |-----+-----------+--------------+--------------------------------------| * | 0 | magic | LE32 | FUNCTIONFS_{FS,HS}_DESCRIPTORS_MAGIC | - * | 4 | lenght | LE32 | length of the whole data chunk | + * | 4 | length | LE32 | length of the whole data chunk | * | 8 | fs_count | LE32 | number of full-speed descriptors | * | 12 | hs_count | LE32 | number of high-speed descriptors | * | 16 | fs_descrs | Descriptor[] | list of full-speed descriptors | @@ -86,7 +86,7 @@ struct usb_functionfs_strings_head { * | 0 | lang | LE16 | language code | * | 2 | strings | String[str_count] | array of strings in given language | * - * For each string ther is one strings entry (ie. there are str_count + * For each string there is one strings entry (ie. there are str_count * string entries). Each String is a NUL terminated string encoded in * UTF-8. */ diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h index 006412ce2303..e538172c0f64 100644 --- a/include/linux/usb/gadget.h +++ b/include/linux/usb/gadget.h @@ -72,7 +72,7 @@ struct usb_ep; * Bulk endpoints can use any size buffers, and can also be used for interrupt * transfers. interrupt-only endpoints can be much less functional. * - * NOTE: this is analagous to 'struct urb' on the host side, except that + * NOTE: this is analogous to 'struct urb' on the host side, except that * it's thinner and promotes more pre-allocation. */ @@ -269,7 +269,7 @@ static inline void usb_ep_free_request(struct usb_ep *ep, * * Control endpoints ... after getting a setup() callback, the driver queues * one response (even if it would be zero length). That enables the - * status ack, after transfering data as specified in the response. Setup + * status ack, after transferring data as specified in the response. Setup * functions may return negative error codes to generate protocol stalls. * (Note that some USB device controllers disallow protocol stall responses * in some cases.) When control responses are deferred (the response is diff --git a/include/linux/usb/midi.h b/include/linux/usb/midi.h index 1d1040865661..c8c52e3c91de 100644 --- a/include/linux/usb/midi.h +++ b/include/linux/usb/midi.h @@ -70,7 +70,7 @@ struct usb_midi_out_jack_descriptor { __u8 bJackID; __u8 bNrInputPins; /* p */ struct usb_midi_source_pin pins[]; /* [p] */ - /*__u8 iJack; -- ommitted due to variable-sized pins[] */ + /*__u8 iJack; -- omitted due to variable-sized pins[] */ } __attribute__ ((packed)); #define USB_DT_MIDI_OUT_SIZE(p) (7 + 2 * (p)) diff --git a/include/linux/usb/wusb.h b/include/linux/usb/wusb.h index 63ebdcc5dda6..0c4d4ca370ec 100644 --- a/include/linux/usb/wusb.h +++ b/include/linux/usb/wusb.h @@ -126,7 +126,7 @@ enum { /** * WUSB IE: Channel Stop (WUSB1.0[7.5.8]) * - * Tells devices the host is going to stop sending MMCs and will dissapear. + * Tells devices the host is going to stop sending MMCs and will disappear. */ struct wuie_channel_stop { struct wuie_hdr hdr; diff --git a/include/linux/uwb.h b/include/linux/uwb.h index 7fc9746f22cd..b0c564ec2160 100644 --- a/include/linux/uwb.h +++ b/include/linux/uwb.h @@ -274,7 +274,7 @@ static inline void uwb_mas_bm_copy_le(void *dst, const struct uwb_mas_bm *mas) /** * struct uwb_drp_avail - a radio controller's view of MAS usage - * @global: MAS unused by neighbors (excluding reservations targetted + * @global: MAS unused by neighbors (excluding reservations targeted * or owned by the local radio controller) or the beaon period * @local: MAS unused by local established reservations * @pending: MAS unused by local pending reservations @@ -702,10 +702,10 @@ void edc_init(struct edc *edc) edc->timestart = jiffies; } -/* Called when an error occured. +/* Called when an error occurred. * This is way to determine if the number of acceptable errors per time * period has been exceeded. It is not accurate as there are cases in which - * this scheme will not work, for example if there are periodic occurences + * this scheme will not work, for example if there are periodic occurrences * of errors that straddle updates to the start time. This scheme is * sufficient for our usage. * diff --git a/include/linux/uwb/umc.h b/include/linux/uwb/umc.h index 4b4fc0f43855..7b4842028ca7 100644 --- a/include/linux/uwb/umc.h +++ b/include/linux/uwb/umc.h @@ -132,7 +132,7 @@ int umc_match_pci_id(struct umc_driver *umc_drv, struct umc_dev *umc); * * FIXME: This is as dirty as it gets, but we need some way to check * the correct type of umc_dev->parent (so that for example, we can - * cast to pci_dev). Casting to pci_dev is necesary because at some + * cast to pci_dev). Casting to pci_dev is necessary because at some * point we need to request resources from the device. Mapping is * easily over come (ioremap and stuff are bus agnostic), but hooking * up to some error handlers (such as pci error handlers) might need diff --git a/include/linux/vgaarb.h b/include/linux/vgaarb.h index e9e1524b582c..9c3120dca294 100644 --- a/include/linux/vgaarb.h +++ b/include/linux/vgaarb.h @@ -78,7 +78,7 @@ extern void vga_set_legacy_decoding(struct pci_dev *pdev, * wether the card is doing legacy decoding for that type of resource. If * yes, the lock is "converted" into a legacy resource lock. * The arbiter will first look for all VGA cards that might conflict - * and disable their IOs and/or Memory access, inlcuding VGA forwarding + * and disable their IOs and/or Memory access, including VGA forwarding * on P2P bridges if necessary, so that the requested resources can * be used. Then, the card is marked as locking these resources and * the IO and/or Memory accesse are enabled on the card (including @@ -187,7 +187,7 @@ extern struct pci_dev *vga_default_device(void); * vga_conflicts * * Architectures should define this if they have several - * independant PCI domains that can afford concurrent VGA + * independent PCI domains that can afford concurrent VGA * decoding */ diff --git a/include/linux/wimax.h b/include/linux/wimax.h index 4fdcc5635518..9f6b77af2f6d 100644 --- a/include/linux/wimax.h +++ b/include/linux/wimax.h @@ -114,7 +114,7 @@ enum { WIMAX_GNL_RESET_IFIDX = 1, }; -/* Atributes for wimax_state_get() */ +/* Attributes for wimax_state_get() */ enum { WIMAX_GNL_STGET_IFIDX = 1, }; diff --git a/include/linux/xilinxfb.h b/include/linux/xilinxfb.h index f2463f559fb9..5a155a968054 100644 --- a/include/linux/xilinxfb.h +++ b/include/linux/xilinxfb.h @@ -16,7 +16,7 @@ /* ML300/403 reference design framebuffer driver platform data struct */ struct xilinxfb_platform_data { u32 rotate_screen; /* Flag to rotate display 180 degrees */ - u32 screen_height_mm; /* Physical dimentions of screen in mm */ + u32 screen_height_mm; /* Physical dimensions of screen in mm */ u32 screen_width_mm; u32 xres, yres; /* resolution of screen in pixels */ u32 xvirt, yvirt; /* resolution of memory buffer */ -- cgit v1.2.3 From c0bb9e45f3a7f67fc358946727bc3d5f23d0f55d Mon Sep 17 00:00:00 2001 From: Anton Blanchard Date: Wed, 25 Aug 2010 10:22:58 +1000 Subject: kdump: Allow shrinking of kdump region to be overridden On ppc64 the crashkernel region almost always overlaps an area of firmware. This works fine except when using the sysfs interface to reduce the kdump region. If we free the firmware area we are guaranteed to crash. Rename free_reserved_phys_range to crash_free_reserved_phys_range and make it a weak function so we can override it. Signed-off-by: Anton Blanchard Signed-off-by: Benjamin Herrenschmidt --- include/linux/kexec.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/kexec.h b/include/linux/kexec.h index 03e8e8dbc577..c2478a342cd7 100644 --- a/include/linux/kexec.h +++ b/include/linux/kexec.h @@ -208,6 +208,7 @@ int __init parse_crashkernel(char *cmdline, unsigned long long system_ram, unsigned long long *crash_size, unsigned long long *crash_base); int crash_shrink_memory(unsigned long new_size); size_t crash_get_memory_size(void); +void crash_free_reserved_phys_range(unsigned long begin, unsigned long end); #else /* !CONFIG_KEXEC */ struct pt_regs; -- cgit v1.2.3 From a4dd99250dc49031e6a92a895dbcc230a4832083 Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Fri, 1 Apr 2011 07:15:14 -0700 Subject: rcu: create new rcu_access_index() and use in mce The MCE subsystem needs to sample an RCU-protected index outside of any protection for that index. If this was a pointer, we would use rcu_access_pointer(), but there is no corresponding rcu_access_index(). This commit therefore creates an rcu_access_index() and applies it to MCE. Signed-off-by: Paul E. McKenney Tested-by: Zdenek Kabelac --- include/linux/rcupdate.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'include/linux') diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h index af5614856285..ff422d2b7f90 100644 --- a/include/linux/rcupdate.h +++ b/include/linux/rcupdate.h @@ -339,6 +339,12 @@ extern int rcu_my_thread_group_empty(void); ((typeof(*p) __force __kernel *)(p)); \ }) +#define __rcu_access_index(p, space) \ + ({ \ + typeof(p) _________p1 = ACCESS_ONCE(p); \ + rcu_dereference_sparse(p, space); \ + (_________p1); \ + }) #define __rcu_dereference_index_check(p, c) \ ({ \ typeof(p) _________p1 = ACCESS_ONCE(p); \ @@ -428,6 +434,20 @@ extern int rcu_my_thread_group_empty(void); #define rcu_dereference_raw(p) rcu_dereference_check(p, 1) /*@@@ needed? @@@*/ +/** + * rcu_access_index() - fetch RCU index with no dereferencing + * @p: The index to read + * + * Return the value of the specified RCU-protected index, but omit the + * smp_read_barrier_depends() and keep the ACCESS_ONCE(). This is useful + * when the value of this index is accessed, but the index is not + * dereferenced, for example, when testing an RCU-protected index against + * -1. Although rcu_access_index() may also be used in cases where + * update-side locks prevent the value of the index from changing, you + * should instead use rcu_dereference_index_protected() for this use case. + */ +#define rcu_access_index(p) __rcu_access_index((p), __rcu) + /** * rcu_dereference_index_check() - rcu_dereference for indices with debug checking * @p: The pointer to read, prior to dereferencing -- cgit v1.2.3 From c261344d3ce3edac781f9d3c7eabe2e96d8e8fe8 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Fri, 1 Apr 2011 20:12:02 -0700 Subject: usbnet: use eth%d name for known ethernet devices The documentation for the USB ethernet devices suggests that only some devices are supposed to use usb0 as the network interface name instead of eth0. The logic used there, and documented in Kconfig for CDC is that eth0 will be used when the mac address is a globally assigned one, but usb0 is used for the locally managed range that is typically used on point-to-point links. Unfortunately, this has caused a lot of pain on the smsc95xx device that is used on the popular pandaboard without an EEPROM to store the MAC address, which causes the driver to call random_ether_address(). Obviously, there should be a proper MAC addressed assigned to the device, and discussions are ongoing about how to solve this, but this patch at least makes sure that the default interface naming gets a little saner and matches what the user can expect based on the documentation, including for new devices. The approach taken here is to flag whether a device might be a point-to-point link with the new FLAG_POINTTOPOINT setting in the usbnet driver_info. A driver can set both FLAG_POINTTOPOINT and FLAG_ETHER if it is not sure (e.g. cdc_ether), or just one of the two. The usbnet framework only looks at the MAC address for device naming if both flags are set, otherwise it trusts the flag. Signed-off-by: Arnd Bergmann Tested-by: Andy Green Signed-off-by: David S. Miller --- include/linux/usb/usbnet.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb/usbnet.h b/include/linux/usb/usbnet.h index 201f2228f731..3c7329b8ea0e 100644 --- a/include/linux/usb/usbnet.h +++ b/include/linux/usb/usbnet.h @@ -97,6 +97,8 @@ struct driver_info { #define FLAG_LINK_INTR 0x0800 /* updates link (carrier) status */ +#define FLAG_POINTTOPOINT 0x1000 /* possibly use "usb%d" names */ + /* * Indicates to usbnet, that USB driver accumulates multiple IP packets. * Affects statistic (counters) and short packet handling. -- cgit v1.2.3 From 4dd5ffe4fc36128dc86568ddeaeae359e6037762 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Micha=C5=82=20Miros=C5=82aw?= Date: Wed, 30 Mar 2011 23:58:08 +0000 Subject: net: Fix dev dev_ethtool_get_rx_csum() for forced NETIF_F_RXCSUM MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit dev_ethtool_get_rx_csum() won't report rx checksumming when it's not changeable and driver is converted to hw_features and friends. Fix this. (dev->hw_features & NETIF_F_RXCSUM) check is dropped - if the ethtool_ops->get_rx_csum is set, then driver is not coverted, yet. Signed-off-by: Michał Mirosław Signed-off-by: David S. Miller --- include/linux/netdevice.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 5eeb2cd3631c..0249fe7e3872 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -2598,8 +2598,8 @@ static inline int dev_ethtool_get_settings(struct net_device *dev, static inline u32 dev_ethtool_get_rx_csum(struct net_device *dev) { - if (dev->hw_features & NETIF_F_RXCSUM) - return !!(dev->features & NETIF_F_RXCSUM); + if (dev->features & NETIF_F_RXCSUM) + return 1; if (!dev->ethtool_ops || !dev->ethtool_ops->get_rx_csum) return 0; return dev->ethtool_ops->get_rx_csum(dev); -- cgit v1.2.3 From 2f9f28b212a2bd4948c8ceaaec33ce0123632129 Mon Sep 17 00:00:00 2001 From: Jozsef Kadlecsik Date: Mon, 4 Apr 2011 15:19:25 +0200 Subject: netfilter: ipset: references are protected by rwlock instead of mutex The timeout variant of the list:set type must reference the member sets. However, its garbage collector runs at timer interrupt so the mutex protection of the references is a no go. Therefore the reference protection is converted to rwlock. Signed-off-by: Jozsef Kadlecsik Signed-off-by: Patrick McHardy --- include/linux/netfilter/ipset/ip_set.h | 2 +- include/linux/netfilter/ipset/ip_set_ahash.h | 3 +-- 2 files changed, 2 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/netfilter/ipset/ip_set.h b/include/linux/netfilter/ipset/ip_set.h index ec333d83f3b4..5a262e3ae715 100644 --- a/include/linux/netfilter/ipset/ip_set.h +++ b/include/linux/netfilter/ipset/ip_set.h @@ -293,7 +293,7 @@ struct ip_set { /* Lock protecting the set data */ rwlock_t lock; /* References to the set */ - atomic_t ref; + u32 ref; /* The core set type */ struct ip_set_type *type; /* The type variant doing the real job */ diff --git a/include/linux/netfilter/ipset/ip_set_ahash.h b/include/linux/netfilter/ipset/ip_set_ahash.h index ec9d9bea1e37..a0196ac79051 100644 --- a/include/linux/netfilter/ipset/ip_set_ahash.h +++ b/include/linux/netfilter/ipset/ip_set_ahash.h @@ -515,8 +515,7 @@ type_pf_head(struct ip_set *set, struct sk_buff *skb) if (h->netmask != HOST_MASK) NLA_PUT_U8(skb, IPSET_ATTR_NETMASK, h->netmask); #endif - NLA_PUT_NET32(skb, IPSET_ATTR_REFERENCES, - htonl(atomic_read(&set->ref) - 1)); + NLA_PUT_NET32(skb, IPSET_ATTR_REFERENCES, htonl(set->ref - 1)); NLA_PUT_NET32(skb, IPSET_ATTR_MEMSIZE, htonl(memsize)); if (with_timeout(h->timeout)) NLA_PUT_NET32(skb, IPSET_ATTR_TIMEOUT, htonl(h->timeout)); -- cgit v1.2.3 From 31ad3dd64e689bc79dd819f8f134b9b025240eb8 Mon Sep 17 00:00:00 2001 From: Florian Westphal Date: Mon, 4 Apr 2011 16:56:29 +0200 Subject: netfilter: af_info: add network namespace parameter to route hook This is required to eventually replace the rt6_lookup call in xt_addrtype.c with nf_afinfo->route(). Signed-off-by: Florian Westphal Acked-by: David S. Miller Signed-off-by: Patrick McHardy --- include/linux/netfilter.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/netfilter.h b/include/linux/netfilter.h index eeec00abb664..20ed4528e850 100644 --- a/include/linux/netfilter.h +++ b/include/linux/netfilter.h @@ -270,7 +270,8 @@ struct nf_afinfo { unsigned int dataoff, unsigned int len, u_int8_t protocol); - int (*route)(struct dst_entry **dst, struct flowi *fl); + int (*route)(struct net *net, struct dst_entry **dst, + struct flowi *fl); void (*saveroute)(const struct sk_buff *skb, struct nf_queue_entry *entry); int (*reroute)(struct sk_buff *skb, -- cgit v1.2.3 From 0fae2e7740aca7e384c5f337f458897e7e337d58 Mon Sep 17 00:00:00 2001 From: Florian Westphal Date: Mon, 4 Apr 2011 17:00:54 +0200 Subject: netfilter: af_info: add 'strict' parameter to limit lookup to .oif ipv6 fib lookup can set RT6_LOOKUP_F_IFACE flag to restrict search to an interface, but this flag cannot be set via struct flowi. Also, it cannot be set via ip6_route_output: this function uses the passed sock struct to determine if this flag is required (by testing for nonzero sk_bound_dev_if). Work around this by passing in an artificial struct sk in case 'strict' argument is true. This is required to replace the rt6_lookup call in xt_addrtype.c with nf_afinfo->route(). Signed-off-by: Florian Westphal Acked-by: David S. Miller Signed-off-by: Patrick McHardy --- include/linux/netfilter.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/netfilter.h b/include/linux/netfilter.h index 20ed4528e850..7fa95df60146 100644 --- a/include/linux/netfilter.h +++ b/include/linux/netfilter.h @@ -271,7 +271,7 @@ struct nf_afinfo { unsigned int len, u_int8_t protocol); int (*route)(struct net *net, struct dst_entry **dst, - struct flowi *fl); + struct flowi *fl, bool strict); void (*saveroute)(const struct sk_buff *skb, struct nf_queue_entry *entry); int (*reroute)(struct sk_buff *skb, -- cgit v1.2.3 From b710a480554f2be682bac3cb59b0e085ba3d644b Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Wed, 30 Mar 2011 09:52:30 +0200 Subject: block: get rid of elv_insert() interface Merge it with __elv_add_request(), it's pretty pointless to have a function with only two callers. The main interface is elv_add_request()/__elv_add_request(). Signed-off-by: Jens Axboe --- include/linux/elevator.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/elevator.h b/include/linux/elevator.h index d93efcc44570..21a8ebf2dc3a 100644 --- a/include/linux/elevator.h +++ b/include/linux/elevator.h @@ -101,7 +101,6 @@ extern void elv_dispatch_sort(struct request_queue *, struct request *); extern void elv_dispatch_add_tail(struct request_queue *, struct request *); extern void elv_add_request(struct request_queue *, struct request *, int); extern void __elv_add_request(struct request_queue *, struct request *, int); -extern void elv_insert(struct request_queue *, struct request *, int); extern int elv_merge(struct request_queue *, struct request **, struct bio *); extern int elv_try_merge(struct request *, struct bio *); extern void elv_merge_requests(struct request_queue *, struct request *, -- cgit v1.2.3 From 7dcda1c96d7c643101d4a05579ef4512a4baa7ef Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Tue, 5 Apr 2011 23:51:48 +0200 Subject: fs: export empty_aops With the ->sync_page() hook gone, we have a few users that add their own static address_space_operations without any functions defined. fs/inode.c already has an empty_aops that it uses for init purposes. Lets export that and use it in the places where an otherwise empty aops was defined. Signed-off-by: Jens Axboe --- include/linux/fs.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index 52f283c1edb2..1b95af37e3b3 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -613,6 +613,8 @@ struct address_space_operations { int (*error_remove_page)(struct address_space *, struct page *); }; +extern const struct address_space_operations empty_aops; + /* * pagecache_write_begin/pagecache_write_end must be used by general code * to write into the pagecache. -- cgit v1.2.3 From a63a5cf84dac7a23a57c800eea5734701e7d3c04 Mon Sep 17 00:00:00 2001 From: Mike Snitzer Date: Fri, 1 Apr 2011 21:02:31 +0200 Subject: dm: improve block integrity support The current block integrity (DIF/DIX) support in DM is verifying that all devices' integrity profiles match during DM device resume (which is past the point of no return). To some degree that is unavoidable (stacked DM devices force this late checking). But for most DM devices (which aren't stacking on other DM devices) the ideal time to verify all integrity profiles match is during table load. Introduce the notion of an "initialized" integrity profile: a profile that was blk_integrity_register()'d with a non-NULL 'blk_integrity' template. Add blk_integrity_is_initialized() to allow checking if a profile was initialized. Update DM integrity support to: - check all devices with _initialized_ integrity profiles match during table load; uninitialized profiles (e.g. for underlying DM device(s) of a stacked DM device) are ignored. - disallow a table load that would result in an integrity profile that conflicts with a DM device's existing (in-use) integrity profile - avoid clearing an existing integrity profile - validate all integrity profiles match during resume; but if they don't all we can do is report the mismatch (during resume we're past the point of no return) Signed-off-by: Mike Snitzer Cc: Martin K. Petersen Signed-off-by: Jens Axboe --- include/linux/blkdev.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 16a902f099ac..32176cc8e715 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -1206,6 +1206,7 @@ struct blk_integrity { struct kobject kobj; }; +extern bool blk_integrity_is_initialized(struct gendisk *); extern int blk_integrity_register(struct gendisk *, struct blk_integrity *); extern void blk_integrity_unregister(struct gendisk *); extern int blk_integrity_compare(struct gendisk *, struct gendisk *); @@ -1262,6 +1263,7 @@ queue_max_integrity_segments(struct request_queue *q) #define queue_max_integrity_segments(a) (0) #define blk_integrity_merge_rq(a, b, c) (0) #define blk_integrity_merge_bio(a, b, c) (0) +#define blk_integrity_is_initialized(a) (0) #endif /* CONFIG_BLK_DEV_INTEGRITY */ -- cgit v1.2.3 From 34206f267120c839a479d0237db907fa062e7b0f Mon Sep 17 00:00:00 2001 From: Enric Balletbo i Serra Date: Tue, 5 Apr 2011 07:08:41 +0000 Subject: can: mcp251x: Allow pass IRQ flags through platform data. When an interrupt occurs, the INT pin is driven low by the MCP251x controller (falling edge) but in some cases the INT pin can be connected to the MPU through a transistor or level translator which inverts this signal. In this case interrupt should be configured in rising edge. This patch adds support to pass the IRQ flags via mcp251x_platform_data. Signed-off-by: Enric Balletbo i Serra Acked-by: Wolfgang Grandegger Acked-by: Marc Kleine-Budde Signed-off-by: David S. Miller --- include/linux/can/platform/mcp251x.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/can/platform/mcp251x.h b/include/linux/can/platform/mcp251x.h index 8e20540043f5..089fe43211a4 100644 --- a/include/linux/can/platform/mcp251x.h +++ b/include/linux/can/platform/mcp251x.h @@ -12,6 +12,7 @@ /** * struct mcp251x_platform_data - MCP251X SPI CAN controller platform data * @oscillator_frequency: - oscillator frequency in Hz + * @irq_flags: - IRQF configuration flags * @board_specific_setup: - called before probing the chip (power,reset) * @transceiver_enable: - called to power on/off the transceiver * @power_enable: - called to power on/off the mcp *and* the @@ -24,6 +25,7 @@ struct mcp251x_platform_data { unsigned long oscillator_frequency; + unsigned long irq_flags; int (*board_specific_setup)(struct spi_device *spi); int (*transceiver_enable)(int enable); int (*power_enable) (int enable); -- cgit v1.2.3 From 1f112cee07b314e244ee9e71d9c1e6950dc13327 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Mon, 11 Apr 2011 22:54:42 +0200 Subject: PM / Hibernate: Introduce CONFIG_HIBERNATE_CALLBACKS Xen save/restore is going to use hibernate device callbacks for quiescing devices and putting them back to normal operations and it would need to select CONFIG_HIBERNATION for this purpose. However, that also would cause the hibernate interfaces for user space to be enabled, which might confuse user space, because the Xen kernels don't support hibernation. Moreover, it would be wasteful, as it would make the Xen kernels include a substantial amount of code that they would never use. To address this issue introduce new power management Kconfig option CONFIG_HIBERNATE_CALLBACKS, such that it will only select the code that is necessary for the hibernate device callbacks to work and make CONFIG_HIBERNATION select it. Then, Xen save/restore will be able to select CONFIG_HIBERNATE_CALLBACKS without dragging the entire hibernate code along with it. Signed-off-by: Rafael J. Wysocki Tested-by: Shriram Rajagopalan --- include/linux/suspend.h | 11 +++-------- 1 file changed, 3 insertions(+), 8 deletions(-) (limited to 'include/linux') diff --git a/include/linux/suspend.h b/include/linux/suspend.h index 5a89e3612875..083ffea7ba18 100644 --- a/include/linux/suspend.h +++ b/include/linux/suspend.h @@ -249,6 +249,8 @@ extern void hibernation_set_ops(const struct platform_hibernation_ops *ops); extern int hibernate(void); extern bool system_entering_hibernation(void); #else /* CONFIG_HIBERNATION */ +static inline void register_nosave_region(unsigned long b, unsigned long e) {} +static inline void register_nosave_region_late(unsigned long b, unsigned long e) {} static inline int swsusp_page_is_forbidden(struct page *p) { return 0; } static inline void swsusp_set_page_free(struct page *p) {} static inline void swsusp_unset_page_free(struct page *p) {} @@ -297,14 +299,7 @@ static inline bool pm_wakeup_pending(void) { return false; } extern struct mutex pm_mutex; -#ifndef CONFIG_HIBERNATION -static inline void register_nosave_region(unsigned long b, unsigned long e) -{ -} -static inline void register_nosave_region_late(unsigned long b, unsigned long e) -{ -} - +#ifndef CONFIG_HIBERNATE_CALLBACKS static inline void lock_system_sleep(void) {} static inline void unlock_system_sleep(void) {} -- cgit v1.2.3 From f75664570d8b75469cc468f23c2b27220984983b Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Tue, 12 Apr 2011 10:17:31 +0200 Subject: block: add callback function for unplug notification MD would like to know when a queue is unplugged, so it can flush it's bitmap writes. Add such a callback. Signed-off-by: Jens Axboe --- include/linux/blkdev.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 32176cc8e715..c07ffafac5d4 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -196,6 +196,7 @@ typedef void (request_fn_proc) (struct request_queue *q); typedef int (make_request_fn) (struct request_queue *q, struct bio *bio); typedef int (prep_rq_fn) (struct request_queue *, struct request *); typedef void (unprep_rq_fn) (struct request_queue *, struct request *); +typedef void (unplugged_fn) (struct request_queue *); struct bio_vec; struct bvec_merge_data { @@ -283,6 +284,7 @@ struct request_queue rq_timed_out_fn *rq_timed_out_fn; dma_drain_needed_fn *dma_drain_needed; lld_busy_fn *lld_busy_fn; + unplugged_fn *unplugged_fn; /* * Dispatch queue sorting @@ -841,6 +843,7 @@ extern void blk_queue_dma_alignment(struct request_queue *, int); extern void blk_queue_update_dma_alignment(struct request_queue *, int); extern void blk_queue_softirq_done(struct request_queue *, softirq_done_fn *); extern void blk_queue_rq_timed_out(struct request_queue *, rq_timed_out_fn *); +extern void blk_queue_unplugged(struct request_queue *, unplugged_fn *); extern void blk_queue_rq_timeout(struct request_queue *, unsigned int); extern void blk_queue_flush(struct request_queue *q, unsigned int flush); extern struct backing_dev_info *blk_get_backing_dev_info(struct block_device *bdev); -- cgit v1.2.3 From e710d7d5a9cab1041b7a3cf9e655b75d92786857 Mon Sep 17 00:00:00 2001 From: Samuel Ortiz Date: Fri, 8 Apr 2011 00:43:01 +0200 Subject: mfd: Fetch cell pointer from platform_device->mfd_cell In order for MFD drivers to fetch their cell pointer but also their platform data one, an mfd cell pointer is added to the platform_device structure. That allows all MFD sub devices drivers to be MFD agnostic, unless they really need to access their MFD cell data. Most of them don't, especially the ones for IPs used by both MFD and non MFD SoCs. Cc: Grant Likely Acked-by: Greg KH Signed-off-by: Samuel Ortiz --- include/linux/mfd/core.h | 13 +++++++++++-- include/linux/platform_device.h | 5 +++++ 2 files changed, 16 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/core.h b/include/linux/mfd/core.h index ad1b19aa6508..aef23309a742 100644 --- a/include/linux/mfd/core.h +++ b/include/linux/mfd/core.h @@ -86,16 +86,25 @@ extern int mfd_clone_cell(const char *cell, const char **clones, */ static inline const struct mfd_cell *mfd_get_cell(struct platform_device *pdev) { - return pdev->dev.platform_data; + return pdev->mfd_cell; } /* * Given a platform device that's been created by mfd_add_devices(), fetch * the .mfd_data entry from the mfd_cell that created it. + * Otherwise just return the platform_data pointer. + * This maintains compatibility with platform drivers whose devices aren't + * created by the mfd layer, and expect platform_data to contain what would've + * otherwise been in mfd_data. */ static inline void *mfd_get_data(struct platform_device *pdev) { - return mfd_get_cell(pdev)->mfd_data; + const struct mfd_cell *cell = mfd_get_cell(pdev); + + if (cell) + return cell->mfd_data; + else + return pdev->dev.platform_data; } extern int mfd_add_devices(struct device *parent, int id, diff --git a/include/linux/platform_device.h b/include/linux/platform_device.h index d96db9825708..744942c95fec 100644 --- a/include/linux/platform_device.h +++ b/include/linux/platform_device.h @@ -14,6 +14,8 @@ #include #include +struct mfd_cell; + struct platform_device { const char * name; int id; @@ -23,6 +25,9 @@ struct platform_device { const struct platform_device_id *id_entry; + /* MFD cell pointer */ + struct mfd_cell *mfd_cell; + /* arch specific additions */ struct pdev_archdata archdata; }; -- cgit v1.2.3 From be85bccaa5aa5a11dcaf85f9e945ffefd253f631 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 12 Apr 2011 13:35:56 -0700 Subject: Revert "vfs: Export file system uuid via /proc//mountinfo" This reverts commit 93f1c20bc8cdb757be50566eff88d65c3b26881f. It turns out that libmount misparses it because it adds a '-' character in the uuid string, which libmount then incorrectly confuses with the separator string (" - ") at the end of all the optional arguments. Upstream libmount (in the util-linux tree) has been fixed, but until that fix actually percolates up to users, we'd better not expose this change in the kernel. Let's revisit this later (possibly by exposing the UUID without any '-' characters in it, avoiding the user-space bug). Reported-by: Dave Jones Cc: Aneesh Kumar K.V Cc: Al Viro Cc: Karel Zak Cc: Ram Pai Cc: Miklos Szeredi Cc: Eric Sandeen Signed-off-by: Linus Torvalds --- include/linux/fs.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index dbd860af0804..5b14843af9f9 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1403,7 +1403,6 @@ struct super_block { wait_queue_head_t s_wait_unfrozen; char s_id[32]; /* Informational name */ - u8 s_uuid[16]; /* UUID */ void *s_fs_info; /* Filesystem private info */ fmode_t s_mode; -- cgit v1.2.3 From 0bba01695b74fdd2f9286243bb39f88544d81401 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 12 Apr 2011 15:21:04 -0700 Subject: vfs: Re-introduce s_uuid in the superblock Gaah. When commit be85bccaa5aa reverted the export of file system uuid via /proc//mountinfo, it also unintentionally removed the s_uuid field in struct super_block. I didn't mean to do that, since filesystems have been taught to fill it in (and we want to keep it for future re-introduction in the mountinfo file). Stupid of me. This adds it back in. Signed-off-by: Linus Torvalds --- include/linux/fs.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index 5b14843af9f9..dbd860af0804 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1403,6 +1403,7 @@ struct super_block { wait_queue_head_t s_wait_unfrozen; char s_id[32]; /* Informational name */ + u8 s_uuid[16]; /* UUID */ void *s_fs_info; /* Filesystem private info */ fmode_t s_mode; -- cgit v1.2.3 From ba6a078b77e0dc1309d7e6e2ee034b92ab91f88c Mon Sep 17 00:00:00 2001 From: Jarod Wilson Date: Tue, 12 Apr 2011 23:13:08 -0700 Subject: Input: add KEY_IMAGES specifically for AL Image Browser Many media center remotes have buttons intended for jumping straight to one type of media browser or another -- commonly, images/photos/pictures, audio/music, television, and movies. At present, remotes with an images or photos or pictures button use any number of different keycodes which sort of maybe fit. I've seen at least KEY_MEDIA, KEY_CAMERA, KEY_GRAPHICSEDITOR and KEY_PRESENTATION. None of those seem quite right. In my mind, KEY_MEDIA should be something more like a media center application launcher (and I'd like to standardize on that for things like the windows media center button on the mce remotes). KEY_CAMERA is used in a lot of webcams, and typically means "take a picture now". KEY_GRAPHICSEDITOR implies an editor, not a browser. KEY_PRESENTATION might be the closest fit here, if you think "photo slide show", but it may well be more intended for "run application in full-screen presentation mode" or to launch something like magicpoint, I dunno. And thus, I'd like to have a KEY_IMAGES, which matches the HID Usage AL Image Browser, the meaning of which I think is crystal-clear. I believe AL Audio Browser is already covered by KEY_AUDIO, and AL Movie Browser by KEY_VIDEO, so I'm also adding appropriate comments next to those keys. Signed-off-by: Jarod Wilson Signed-off-by: Dmitry Torokhov --- include/linux/input.h | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/input.h b/include/linux/input.h index 056ae8a5bd9b..0cc25e4ce2ab 100644 --- a/include/linux/input.h +++ b/include/linux/input.h @@ -553,8 +553,8 @@ struct input_keymap_entry { #define KEY_DVD 0x185 /* Media Select DVD */ #define KEY_AUX 0x186 #define KEY_MP3 0x187 -#define KEY_AUDIO 0x188 -#define KEY_VIDEO 0x189 +#define KEY_AUDIO 0x188 /* AL Audio Browser */ +#define KEY_VIDEO 0x189 /* AL Movie Browser */ #define KEY_DIRECTORY 0x18a #define KEY_LIST 0x18b #define KEY_MEMO 0x18c /* Media Select Messages */ @@ -603,8 +603,9 @@ struct input_keymap_entry { #define KEY_FRAMEFORWARD 0x1b5 #define KEY_CONTEXT_MENU 0x1b6 /* GenDesc - system context menu */ #define KEY_MEDIA_REPEAT 0x1b7 /* Consumer - transport control */ -#define KEY_10CHANNELSUP 0x1b8 /* 10 channels up (10+) */ -#define KEY_10CHANNELSDOWN 0x1b9 /* 10 channels down (10-) */ +#define KEY_10CHANNELSUP 0x1b8 /* 10 channels up (10+) */ +#define KEY_10CHANNELSDOWN 0x1b9 /* 10 channels down (10-) */ +#define KEY_IMAGES 0x1ba /* AL Image Browser */ #define KEY_DEL_EOL 0x1c0 #define KEY_DEL_EOS 0x1c1 -- cgit v1.2.3 From 9fb0f14e31b6101a0cc69a333b43541044f9b0a6 Mon Sep 17 00:00:00 2001 From: Jeff Brown Date: Tue, 12 Apr 2011 23:29:38 -0700 Subject: Input: evdev - indicate buffer overrun with SYN_DROPPED Add a new EV_SYN code, SYN_DROPPED, to inform the client when input events have been dropped from the evdev input buffer due to a buffer overrun. The client should use this event as a hint to reset its state or ignore all following events until the next packet begins. Signed-off-by: Jeff Brown [dtor@mail.ru: Implement Henrik's suggestion and drop old events in case of overflow.] Signed-off-by: Dmitry Torokhov --- include/linux/input.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/input.h b/include/linux/input.h index 0cc25e4ce2ab..73a8c6ee595b 100644 --- a/include/linux/input.h +++ b/include/linux/input.h @@ -167,6 +167,7 @@ struct input_keymap_entry { #define SYN_REPORT 0 #define SYN_CONFIG 1 #define SYN_MT_REPORT 2 +#define SYN_DROPPED 3 /* * Keys and buttons -- cgit v1.2.3 From 38a2f37258f9e2ae3f6e4241e01088be8dfaf4e9 Mon Sep 17 00:00:00 2001 From: huajun li Date: Wed, 13 Apr 2011 15:43:32 +0000 Subject: usbnet: Fix up 'FLAG_POINTTOPOINT' and 'FLAG_MULTI_PACKET' overlaps. USB tethering does not work anymore since 2.6.39-rc2, but it's okay in -rc1. The root cause is the new added mask code 'FLAG_POINTTOPOINT' overlaps 'FLAG_MULTI_PACKET' in include/linux/usb/usbnet.h, this causes logic issue in rx_process(). This patch cleans up the overlap. Reported-and-Tested-by: Gottfried Haider Signed-off-by: Huajun Li Signed-off-by: David S. Miller --- include/linux/usb/usbnet.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/usb/usbnet.h b/include/linux/usb/usbnet.h index 3c7329b8ea0e..0e1855079fbb 100644 --- a/include/linux/usb/usbnet.h +++ b/include/linux/usb/usbnet.h @@ -103,8 +103,8 @@ struct driver_info { * Indicates to usbnet, that USB driver accumulates multiple IP packets. * Affects statistic (counters) and short packet handling. */ -#define FLAG_MULTI_PACKET 0x1000 -#define FLAG_RX_ASSEMBLE 0x2000 /* rx packets may span >1 frames */ +#define FLAG_MULTI_PACKET 0x2000 +#define FLAG_RX_ASSEMBLE 0x4000 /* rx packets may span >1 frames */ /* init device ... can sleep, or cause probe() failure */ int (*bind)(struct usbnet *, struct usb_interface *); -- cgit v1.2.3 From 67954fe95705a8ff80335964bd7e621d13fbc499 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Thu, 14 Apr 2011 15:21:52 -0700 Subject: memcg: fix mem_cgroup_rotate_reclaimable_page() commit 3f58a8294333 ("move memcg reclaimable page into tail of inactive list") added inline keyword twice in its prototype. CC arch/x86/kernel/asm-offsets.s In file included from include/linux/swap.h:8, from include/linux/suspend.h:4, from arch/x86/kernel/asm-offsets.c:12: include/linux/memcontrol.h:220: error: duplicate `inline' Signed-off-by: Eric Dumazet Reviewed-by: Minchan Kim Cc: Balbir Singh Cc: KAMEZAWA Hiroyuki Cc: KOSAKI Motohiro Cc: Johannes Weiner Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/memcontrol.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 5a5ce7055839..5e9840f50980 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -216,7 +216,7 @@ static inline void mem_cgroup_del_lru_list(struct page *page, int lru) return ; } -static inline inline void mem_cgroup_rotate_reclaimable_page(struct page *page) +static inline void mem_cgroup_rotate_reclaimable_page(struct page *page) { return ; } -- cgit v1.2.3 From 81ab4201fb7d91d6b0cd9ad5b4b16776e4bed145 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Thu, 14 Apr 2011 15:22:06 -0700 Subject: mm: add VM counters for transparent hugepages I found it difficult to make sense of transparent huge pages without having any counters for its actions. Add some counters to vmstat for allocation of transparent hugepages and fallback to smaller pages. Optional patch, but useful for development and understanding the system. Contains improvements from Andrea Arcangeli and Johannes Weiner [akpm@linux-foundation.org: coding-style fixes] [hannes@cmpxchg.org: fix vmstat_text[] entries] Signed-off-by: Andi Kleen Acked-by: Andrea Arcangeli Reviewed-by: KAMEZAWA Hiroyuki Signed-off-by: Johannes Weiner Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/vmstat.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/vmstat.h b/include/linux/vmstat.h index 461c0119664f..2b3831b58aa4 100644 --- a/include/linux/vmstat.h +++ b/include/linux/vmstat.h @@ -58,6 +58,13 @@ enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT, UNEVICTABLE_PGCLEARED, /* on COW, page truncate */ UNEVICTABLE_PGSTRANDED, /* unable to isolate on unlock */ UNEVICTABLE_MLOCKFREED, +#ifdef CONFIG_TRANSPARENT_HUGEPAGE + THP_FAULT_ALLOC, + THP_FAULT_FALLBACK, + THP_COLLAPSE_ALLOC, + THP_COLLAPSE_ALLOC_FAILED, + THP_SPLIT, +#endif NR_VM_EVENT_ITEMS }; -- cgit v1.2.3 From 4471a675dfc7ca676c165079e91c712b09dc9ce4 Mon Sep 17 00:00:00 2001 From: Jiri Kosina Date: Thu, 14 Apr 2011 15:22:09 -0700 Subject: brk: COMPAT_BRK: fix detection of randomized brk 5520e89 ("brk: fix min_brk lower bound computation for COMPAT_BRK") tried to get the whole logic of brk randomization for legacy (libc5-based) applications finally right. It turns out that the way to detect whether brk has actually been randomized in the end or not introduced by that patch still doesn't work for those binaries, as reported by Geert: : /sbin/init from my old m68k ramdisk exists prematurely. : : Before the patch: : : | brk(0x80005c8e) = 0x80006000 : : After the patch: : : | brk(0x80005c8e) = 0x80005c8e : : Old libc5 considers brk() to have failed if the return value is not : identical to the requested value. I don't like it, but currently see no better option than a bit flag in task_struct to catch the CONFIG_COMPAT_BRK && randomize_va_space == 2 case. Signed-off-by: Jiri Kosina Tested-by: Geert Uytterhoeven Reported-by: Geert Uytterhoeven Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/sched.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index 4ec2c027e92c..18d63cea2848 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1254,6 +1254,9 @@ struct task_struct { #endif struct mm_struct *mm, *active_mm; +#ifdef CONFIG_COMPAT_BRK + unsigned brk_randomized:1; +#endif #if defined(SPLIT_RSS_COUNTING) struct task_rss_stat rss_stat; #endif -- cgit v1.2.3 From 13209c2a52afa691ca19e7e6ebd22d4034bdfeed Mon Sep 17 00:00:00 2001 From: Alexandre Bounine Date: Thu, 14 Apr 2011 15:22:14 -0700 Subject: RapidIO: add IDT CPS-1432 switch definitions Signed-off-by: Alexandre Bounine Cc: Matt Porter Cc: Kumar Gala Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/rio_ids.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/rio_ids.h b/include/linux/rio_ids.h index 7410d3365e2a..0cee0152aca9 100644 --- a/include/linux/rio_ids.h +++ b/include/linux/rio_ids.h @@ -35,6 +35,7 @@ #define RIO_DID_IDTCPS6Q 0x035f #define RIO_DID_IDTCPS10Q 0x035e #define RIO_DID_IDTCPS1848 0x0374 +#define RIO_DID_IDTCPS1432 0x0375 #define RIO_DID_IDTCPS1616 0x0379 #define RIO_DID_IDTVPS1616 0x0377 #define RIO_DID_IDTSPS1616 0x0378 -- cgit v1.2.3 From 59f9996555542f901f2d01ccab5c0612c8c5c480 Mon Sep 17 00:00:00 2001 From: Alexandre Bounine Date: Thu, 14 Apr 2011 15:22:14 -0700 Subject: RapidIO/mpc85xx: fix possible mport registration problems Fix a possible problem with mport registration left non-cleared after fsl_rio_setup() exits on link error. Abort mport initialization if registration failed. This patch is applicable to 2.6.39-rc1 only. The problem does not exist for earlier versions. Signed-off-by: Alexandre Bounine Cc: Kumar Gala Cc: Matt Porter Cc: Li Yang Cc: Thomas Moll Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/rio.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/rio.h b/include/linux/rio.h index 4e37a7cfa726..4d50611112ba 100644 --- a/include/linux/rio.h +++ b/include/linux/rio.h @@ -396,7 +396,7 @@ union rio_pw_msg { }; /* Architecture and hardware-specific functions */ -extern void rio_register_mport(struct rio_mport *); +extern int rio_register_mport(struct rio_mport *); extern int rio_open_inb_mbox(struct rio_mport *, void *, int, int); extern void rio_close_inb_mbox(struct rio_mport *, int); extern int rio_open_outb_mbox(struct rio_mport *, void *, int, int); -- cgit v1.2.3 From 88b996cd0652280cc9b9fc70008fda15f14175e1 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Fri, 15 Apr 2011 15:20:10 +0200 Subject: block: cleanup the block plug helper functions It's a bit of a mess currently. task->plug is being cleared and reset in __blk_finish_plug(), and blk_finish_plug() is testing for a NULL plug which cannot happen even from schedule() anymore since it uses blk_needs_flush_plug() to determine whether to call into this function at all. So get rid of some of the cruft. Signed-off-by: Jens Axboe --- include/linux/blkdev.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index c07ffafac5d4..ffe48ff318f9 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -865,14 +865,14 @@ struct blk_plug { extern void blk_start_plug(struct blk_plug *); extern void blk_finish_plug(struct blk_plug *); -extern void __blk_flush_plug(struct task_struct *, struct blk_plug *); +extern void blk_flush_plug_list(struct blk_plug *); static inline void blk_flush_plug(struct task_struct *tsk) { struct blk_plug *plug = tsk->plug; - if (unlikely(plug)) - __blk_flush_plug(tsk, plug); + if (plug) + blk_flush_plug_list(plug); } static inline bool blk_needs_flush_plug(struct task_struct *tsk) -- cgit v1.2.3 From f6603783f9f099bf7a83b3f6c689bbbf74f0e96e Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Fri, 15 Apr 2011 15:49:07 +0200 Subject: block: only force kblockd unplugging from the schedule() path For the explicit unplugging, we'd prefer to kick things off immediately and not pay the penalty of the latency to switch to kblockd. So let blk_finish_plug() do the run inline, while the implicit-on-schedule-out unplug will punt to kblockd. Signed-off-by: Jens Axboe --- include/linux/blkdev.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index ffe48ff318f9..1c76506fcf11 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -865,14 +865,14 @@ struct blk_plug { extern void blk_start_plug(struct blk_plug *); extern void blk_finish_plug(struct blk_plug *); -extern void blk_flush_plug_list(struct blk_plug *); +extern void blk_flush_plug_list(struct blk_plug *, bool); static inline void blk_flush_plug(struct task_struct *tsk) { struct blk_plug *plug = tsk->plug; if (plug) - blk_flush_plug_list(plug); + blk_flush_plug_list(plug, true); } static inline bool blk_needs_flush_plug(struct task_struct *tsk) -- cgit v1.2.3 From a237c1c5bc5dc5c76a21be922dca4826f3eca8ca Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Sat, 16 Apr 2011 13:27:55 +0200 Subject: block: let io_schedule() flush the plug inline Linus correctly observes that the most important dispatch cases are now done from kblockd, this isn't ideal for latency reasons. The original reason for switching dispatches out-of-line was to avoid too deep a stack, so by _only_ letting the "accidental" flush directly in schedule() be guarded by offload to kblockd, we should be able to get the best of both worlds. So add a blk_schedule_flush_plug() that offloads to kblockd, and only use that from the schedule() path. Signed-off-by: Jens Axboe --- include/linux/blkdev.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'include/linux') diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 1c76506fcf11..ec0357d8c4a5 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -871,6 +871,14 @@ static inline void blk_flush_plug(struct task_struct *tsk) { struct blk_plug *plug = tsk->plug; + if (plug) + blk_flush_plug_list(plug, false); +} + +static inline void blk_schedule_flush_plug(struct task_struct *tsk) +{ + struct blk_plug *plug = tsk->plug; + if (plug) blk_flush_plug_list(plug, true); } @@ -1317,6 +1325,11 @@ static inline void blk_flush_plug(struct task_struct *task) { } +static inline void blk_schedule_flush_plug(struct task_struct *task) +{ +} + + static inline bool blk_needs_flush_plug(struct task_struct *tsk) { return false; -- cgit v1.2.3 From 048c9374a749a27f16493cea033fa4a8ff492356 Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Mon, 18 Apr 2011 09:52:22 +0200 Subject: block: Enhance new plugging support to support general callbacks md/raid requires an unplug callback, but as it does not uses requests the current code cannot provide one. So allow arbitrary callbacks to be attached to the blk_plug. Signed-off-by: NeilBrown Signed-off-by: Jens Axboe --- include/linux/blkdev.h | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index ec0357d8c4a5..f3f7879391a7 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -860,8 +860,13 @@ extern void blk_put_queue(struct request_queue *); struct blk_plug { unsigned long magic; struct list_head list; + struct list_head cb_list; unsigned int should_sort; }; +struct blk_plug_cb { + struct list_head list; + void (*callback)(struct blk_plug_cb *); +}; extern void blk_start_plug(struct blk_plug *); extern void blk_finish_plug(struct blk_plug *); @@ -887,7 +892,7 @@ static inline bool blk_needs_flush_plug(struct task_struct *tsk) { struct blk_plug *plug = tsk->plug; - return plug && !list_empty(&plug->list); + return plug && (!list_empty(&plug->list) || !list_empty(&plug->cb_list)); } /* -- cgit v1.2.3 From b4cb290e0a7d19235bd075c2ad4d60dbab0bac15 Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Mon, 18 Apr 2011 09:54:05 +0200 Subject: Revert "block: add callback function for unplug notification" MD can't use this since it really requires us to be able to keep more than a single piece of state for the unplug. Commit 048c9374 added the required support for MD, so get rid of this now unused code. This reverts commit f75664570d8b75469cc468f23c2b27220984983b. Conflicts: block/blk-core.c Signed-off-by: Jens Axboe --- include/linux/blkdev.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index f3f7879391a7..3448d89297e8 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -196,7 +196,6 @@ typedef void (request_fn_proc) (struct request_queue *q); typedef int (make_request_fn) (struct request_queue *q, struct bio *bio); typedef int (prep_rq_fn) (struct request_queue *, struct request *); typedef void (unprep_rq_fn) (struct request_queue *, struct request *); -typedef void (unplugged_fn) (struct request_queue *); struct bio_vec; struct bvec_merge_data { @@ -284,7 +283,6 @@ struct request_queue rq_timed_out_fn *rq_timed_out_fn; dma_drain_needed_fn *dma_drain_needed; lld_busy_fn *lld_busy_fn; - unplugged_fn *unplugged_fn; /* * Dispatch queue sorting @@ -843,7 +841,6 @@ extern void blk_queue_dma_alignment(struct request_queue *, int); extern void blk_queue_update_dma_alignment(struct request_queue *, int); extern void blk_queue_softirq_done(struct request_queue *, softirq_done_fn *); extern void blk_queue_rq_timed_out(struct request_queue *, rq_timed_out_fn *); -extern void blk_queue_unplugged(struct request_queue *, unplugged_fn *); extern void blk_queue_rq_timeout(struct request_queue *, unsigned int); extern void blk_queue_flush(struct request_queue *q, unsigned int flush); extern struct backing_dev_info *blk_get_backing_dev_info(struct block_device *bdev); -- cgit v1.2.3 From af1db72d8b340f97ad12b60175afdef43e6f0e60 Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Mon, 18 Apr 2011 18:25:41 +1000 Subject: md/dm - remove remains of plug_fn callback. Now that unplugging is done differently, the unplug_fn callback is never called, so it can be completely discarded. Signed-off-by: NeilBrown --- include/linux/device-mapper.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h index e2768834f397..32a4423710f5 100644 --- a/include/linux/device-mapper.h +++ b/include/linux/device-mapper.h @@ -197,7 +197,6 @@ struct dm_target { struct dm_target_callbacks { struct list_head list; int (*congested_fn) (struct dm_target_callbacks *, int); - void (*unplug_fn)(struct dm_target_callbacks *); }; int dm_register_target(struct target_type *t); -- cgit v1.2.3 From 1791f881435fab951939ad700e947b66c062e083 Mon Sep 17 00:00:00 2001 From: Richard Cochran Date: Wed, 30 Mar 2011 15:24:21 +0200 Subject: posix clocks: Replace mutex with reader/writer semaphore A dynamic posix clock is protected from asynchronous removal by a mutex. However, using a mutex has the unwanted effect that a long running clock operation in one process will unnecessarily block other processes. For example, one process might call read() to get an external time stamp coming in at one pulse per second. A second process calling clock_gettime would have to wait for almost a whole second. This patch fixes the issue by using a reader/writer semaphore instead of a mutex. Signed-off-by: Richard Cochran Cc: John Stultz Link: http://lkml.kernel.org/r/%3C20110330132421.GA31771%40riccoc20.at.omicron.at%3E Signed-off-by: Thomas Gleixner --- include/linux/posix-clock.h | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/posix-clock.h b/include/linux/posix-clock.h index 369e19d3750b..7f1183dcd119 100644 --- a/include/linux/posix-clock.h +++ b/include/linux/posix-clock.h @@ -24,6 +24,7 @@ #include #include #include +#include struct posix_clock; @@ -104,7 +105,7 @@ struct posix_clock_operations { * @ops: Functional interface to the clock * @cdev: Character device instance for this clock * @kref: Reference count. - * @mutex: Protects the 'zombie' field from concurrent access. + * @rwsem: Protects the 'zombie' field from concurrent access. * @zombie: If 'zombie' is true, then the hardware has disappeared. * @release: A function to free the structure when the reference count reaches * zero. May be NULL if structure is statically allocated. @@ -117,7 +118,7 @@ struct posix_clock { struct posix_clock_operations ops; struct cdev cdev; struct kref kref; - struct mutex mutex; + struct rw_semaphore rwsem; bool zombie; void (*release)(struct posix_clock *clk); }; -- cgit v1.2.3 From 24ecfbe27f65563909b14492afda2f1c21f7c044 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Mon, 18 Apr 2011 11:41:33 +0200 Subject: block: add blk_run_queue_async Instead of overloading __blk_run_queue to force an offload to kblockd add a new blk_run_queue_async helper to do it explicitly. I've kept the blk_queue_stopped check for now, but I suspect it's not needed as the check we do when the workqueue items runs should be enough. Signed-off-by: Christoph Hellwig Signed-off-by: Jens Axboe --- include/linux/blkdev.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 3448d89297e8..cbbfd98ad4a3 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -697,7 +697,7 @@ extern void blk_start_queue(struct request_queue *q); extern void blk_stop_queue(struct request_queue *q); extern void blk_sync_queue(struct request_queue *q); extern void __blk_stop_queue(struct request_queue *q); -extern void __blk_run_queue(struct request_queue *q, bool force_kblockd); +extern void __blk_run_queue(struct request_queue *q); extern void blk_run_queue(struct request_queue *); extern int blk_rq_map_user(struct request_queue *, struct request *, struct rq_map_data *, void __user *, unsigned long, -- cgit v1.2.3 From 80b4895aa4578e9372d76cd4063f82d0c3994d77 Mon Sep 17 00:00:00 2001 From: Jeff Brown Date: Mon, 18 Apr 2011 10:08:02 -0700 Subject: Input: estimate number of events per packet Calculate a default based on the number of ABS axes, REL axes, and MT slots for the device during input device registration. Signed-off-by: Jeff Brown Reviewed-by: Henrik Rydberg Signed-off-by: Dmitry Torokhov --- include/linux/input/mt.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/input/mt.h b/include/linux/input/mt.h index b3ac06a4435d..318bb82325a6 100644 --- a/include/linux/input/mt.h +++ b/include/linux/input/mt.h @@ -48,6 +48,12 @@ static inline void input_mt_slot(struct input_dev *dev, int slot) input_event(dev, EV_ABS, ABS_MT_SLOT, slot); } +static inline bool input_is_mt_axis(int axis) +{ + return axis == ABS_MT_SLOT || + (axis >= ABS_MT_FIRST && axis <= ABS_MT_LAST); +} + void input_mt_report_slot_state(struct input_dev *dev, unsigned int tool_type, bool active); -- cgit v1.2.3 From c78193e9c7bcbf25b8237ad0dec82f805c4ea69b Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Mon, 18 Apr 2011 10:35:30 -0700 Subject: next_pidmap: fix overflow condition MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit next_pidmap() just quietly accepted whatever 'last' pid that was passed in, which is not all that safe when one of the users is /proc. Admittedly the proc code should do some sanity checking on the range (and that will be the next commit), but that doesn't mean that the helper functions should just do that pidmap pointer arithmetic without checking the range of its arguments. So clamp 'last' to PID_MAX_LIMIT. The fact that we then do "last+1" doesn't really matter, the for-loop does check against the end of the pidmap array properly (it's only the actual pointer arithmetic overflow case we need to worry about, and going one bit beyond isn't going to overflow). [ Use PID_MAX_LIMIT rather than pid_max as per Eric Biederman ] Reported-by: Tavis Ormandy Analyzed-by: Robert Święcki Cc: Eric W. Biederman Cc: Pavel Emelyanov Signed-off-by: Linus Torvalds --- include/linux/pid.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/pid.h b/include/linux/pid.h index 31afb7ecbe1f..cdced84261d7 100644 --- a/include/linux/pid.h +++ b/include/linux/pid.h @@ -117,7 +117,7 @@ extern struct pid *find_vpid(int nr); */ extern struct pid *find_get_pid(int nr); extern struct pid *find_ge_pid(int nr, struct pid_namespace *); -int next_pidmap(struct pid_namespace *pid_ns, int last); +int next_pidmap(struct pid_namespace *pid_ns, unsigned int last); extern struct pid *alloc_pid(struct pid_namespace *ns); extern void free_pid(struct pid *pid); -- cgit v1.2.3 From 468f86134ee515234afe5c5b3f39f266c50e61a5 Mon Sep 17 00:00:00 2001 From: Bryan Schumaker Date: Mon, 18 Apr 2011 15:57:32 -0400 Subject: NFSv4.1: Don't update sequence number if rpc_task is not sent If we fail to contact the gss upcall program, then no message will be sent to the server. The client still updated the sequence number, however, and this lead to NFS4ERR_SEQ_MISMATCH for the next several RPC calls. Signed-off-by: Bryan Schumaker Signed-off-by: Trond Myklebust --- include/linux/sunrpc/sched.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/sunrpc/sched.h b/include/linux/sunrpc/sched.h index d81db8012c63..3b94f804b852 100644 --- a/include/linux/sunrpc/sched.h +++ b/include/linux/sunrpc/sched.h @@ -127,6 +127,7 @@ struct rpc_task_setup { #define RPC_TASK_KILLED 0x0100 /* task was killed */ #define RPC_TASK_SOFT 0x0200 /* Use soft timeouts */ #define RPC_TASK_SOFTCONN 0x0400 /* Fail if can't connect */ +#define RPC_TASK_SENT 0x0800 /* message was sent */ #define RPC_IS_ASYNC(t) ((t)->tk_flags & RPC_TASK_ASYNC) #define RPC_IS_SWAPPER(t) ((t)->tk_flags & RPC_TASK_SWAPPER) @@ -134,6 +135,7 @@ struct rpc_task_setup { #define RPC_ASSASSINATED(t) ((t)->tk_flags & RPC_TASK_KILLED) #define RPC_IS_SOFT(t) ((t)->tk_flags & RPC_TASK_SOFT) #define RPC_IS_SOFTCONN(t) ((t)->tk_flags & RPC_TASK_SOFTCONN) +#define RPC_WAS_SENT(t) ((t)->tk_flags & RPC_TASK_SENT) #define RPC_TASK_RUNNING 0 #define RPC_TASK_QUEUED 1 -- cgit v1.2.3 From c21e6beba8835d09bb80e34961430b13e60381c5 Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Tue, 19 Apr 2011 13:32:46 +0200 Subject: block: get rid of QUEUE_FLAG_REENTER We are currently using this flag to check whether it's safe to call into ->request_fn(). If it is set, we punt to kblockd. But we get a lot of false positives and excessive punts to kblockd, which hurts performance. The only real abuser of this infrastructure is SCSI. So export the async queue run and convert SCSI over to use that. There's room for improvement in that SCSI need not always use the async call, but this fixes our performance issue and they can fix that up in due time. Signed-off-by: Jens Axboe --- include/linux/blkdev.h | 26 +++++++++++++------------- 1 file changed, 13 insertions(+), 13 deletions(-) (limited to 'include/linux') diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index cbbfd98ad4a3..2ad95fa1d130 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -388,20 +388,19 @@ struct request_queue #define QUEUE_FLAG_SYNCFULL 3 /* read queue has been filled */ #define QUEUE_FLAG_ASYNCFULL 4 /* write queue has been filled */ #define QUEUE_FLAG_DEAD 5 /* queue being torn down */ -#define QUEUE_FLAG_REENTER 6 /* Re-entrancy avoidance */ -#define QUEUE_FLAG_ELVSWITCH 7 /* don't use elevator, just do FIFO */ -#define QUEUE_FLAG_BIDI 8 /* queue supports bidi requests */ -#define QUEUE_FLAG_NOMERGES 9 /* disable merge attempts */ -#define QUEUE_FLAG_SAME_COMP 10 /* force complete on same CPU */ -#define QUEUE_FLAG_FAIL_IO 11 /* fake timeout */ -#define QUEUE_FLAG_STACKABLE 12 /* supports request stacking */ -#define QUEUE_FLAG_NONROT 13 /* non-rotational device (SSD) */ +#define QUEUE_FLAG_ELVSWITCH 6 /* don't use elevator, just do FIFO */ +#define QUEUE_FLAG_BIDI 7 /* queue supports bidi requests */ +#define QUEUE_FLAG_NOMERGES 8 /* disable merge attempts */ +#define QUEUE_FLAG_SAME_COMP 9 /* force complete on same CPU */ +#define QUEUE_FLAG_FAIL_IO 10 /* fake timeout */ +#define QUEUE_FLAG_STACKABLE 11 /* supports request stacking */ +#define QUEUE_FLAG_NONROT 12 /* non-rotational device (SSD) */ #define QUEUE_FLAG_VIRT QUEUE_FLAG_NONROT /* paravirt device */ -#define QUEUE_FLAG_IO_STAT 15 /* do IO stats */ -#define QUEUE_FLAG_DISCARD 16 /* supports DISCARD */ -#define QUEUE_FLAG_NOXMERGES 17 /* No extended merges */ -#define QUEUE_FLAG_ADD_RANDOM 18 /* Contributes to random pool */ -#define QUEUE_FLAG_SECDISCARD 19 /* supports SECDISCARD */ +#define QUEUE_FLAG_IO_STAT 13 /* do IO stats */ +#define QUEUE_FLAG_DISCARD 14 /* supports DISCARD */ +#define QUEUE_FLAG_NOXMERGES 15 /* No extended merges */ +#define QUEUE_FLAG_ADD_RANDOM 16 /* Contributes to random pool */ +#define QUEUE_FLAG_SECDISCARD 17 /* supports SECDISCARD */ #define QUEUE_FLAG_DEFAULT ((1 << QUEUE_FLAG_IO_STAT) | \ (1 << QUEUE_FLAG_STACKABLE) | \ @@ -699,6 +698,7 @@ extern void blk_sync_queue(struct request_queue *q); extern void __blk_stop_queue(struct request_queue *q); extern void __blk_run_queue(struct request_queue *q); extern void blk_run_queue(struct request_queue *); +extern void blk_run_queue_async(struct request_queue *q); extern int blk_rq_map_user(struct request_queue *, struct request *, struct rq_map_data *, void __user *, unsigned long, gfp_t); -- cgit v1.2.3 From d924de09cac6e18bdfbe9461a2ab2adeb36e77b0 Mon Sep 17 00:00:00 2001 From: Michael Jones Date: Tue, 29 Mar 2011 05:19:06 -0300 Subject: [media] v4l: add V4L2_PIX_FMT_Y12 format Y12 is a grey-scale format with a depth of 12 bits per pixel stored in 16-bit words. Signed-off-by: Michael Jones Acked-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- include/linux/videodev2.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h index aa6c393b7ae9..be82c8ead1af 100644 --- a/include/linux/videodev2.h +++ b/include/linux/videodev2.h @@ -308,6 +308,7 @@ struct v4l2_pix_format { #define V4L2_PIX_FMT_Y4 v4l2_fourcc('Y', '0', '4', ' ') /* 4 Greyscale */ #define V4L2_PIX_FMT_Y6 v4l2_fourcc('Y', '0', '6', ' ') /* 6 Greyscale */ #define V4L2_PIX_FMT_Y10 v4l2_fourcc('Y', '1', '0', ' ') /* 10 Greyscale */ +#define V4L2_PIX_FMT_Y12 v4l2_fourcc('Y', '1', '2', ' ') /* 12 Greyscale */ #define V4L2_PIX_FMT_Y16 v4l2_fourcc('Y', '1', '6', ' ') /* 16 Greyscale */ /* Palette formats */ -- cgit v1.2.3 From cbbc69a4a98081740f0e3d7717fbfa0b584b983d Mon Sep 17 00:00:00 2001 From: Michael Jones Date: Tue, 29 Mar 2011 05:19:07 -0300 Subject: [media] media: add missing 8-bit bayer formats and Y12 8-bit SGBRG and SRGGB media bus formats are missing, as well as the 12-bit grey format. Add them. Signed-off-by: Michael Jones Acked-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- include/linux/v4l2-mediabus.h | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/v4l2-mediabus.h b/include/linux/v4l2-mediabus.h index 7054a7a8065e..de5c15921025 100644 --- a/include/linux/v4l2-mediabus.h +++ b/include/linux/v4l2-mediabus.h @@ -47,7 +47,7 @@ enum v4l2_mbus_pixelcode { V4L2_MBUS_FMT_RGB565_2X8_BE = 0x1007, V4L2_MBUS_FMT_RGB565_2X8_LE = 0x1008, - /* YUV (including grey) - next is 0x2013 */ + /* YUV (including grey) - next is 0x2014 */ V4L2_MBUS_FMT_Y8_1X8 = 0x2001, V4L2_MBUS_FMT_UYVY8_1_5X8 = 0x2002, V4L2_MBUS_FMT_VYUY8_1_5X8 = 0x2003, @@ -60,6 +60,7 @@ enum v4l2_mbus_pixelcode { V4L2_MBUS_FMT_Y10_1X10 = 0x200a, V4L2_MBUS_FMT_YUYV10_2X10 = 0x200b, V4L2_MBUS_FMT_YVYU10_2X10 = 0x200c, + V4L2_MBUS_FMT_Y12_1X12 = 0x2013, V4L2_MBUS_FMT_UYVY8_1X16 = 0x200f, V4L2_MBUS_FMT_VYUY8_1X16 = 0x2010, V4L2_MBUS_FMT_YUYV8_1X16 = 0x2011, @@ -67,9 +68,11 @@ enum v4l2_mbus_pixelcode { V4L2_MBUS_FMT_YUYV10_1X20 = 0x200d, V4L2_MBUS_FMT_YVYU10_1X20 = 0x200e, - /* Bayer - next is 0x3013 */ + /* Bayer - next is 0x3015 */ V4L2_MBUS_FMT_SBGGR8_1X8 = 0x3001, + V4L2_MBUS_FMT_SGBRG8_1X8 = 0x3013, V4L2_MBUS_FMT_SGRBG8_1X8 = 0x3002, + V4L2_MBUS_FMT_SRGGB8_1X8 = 0x3014, V4L2_MBUS_FMT_SBGGR10_DPCM8_1X8 = 0x300b, V4L2_MBUS_FMT_SGBRG10_DPCM8_1X8 = 0x300c, V4L2_MBUS_FMT_SGRBG10_DPCM8_1X8 = 0x3009, -- cgit v1.2.3 From 8c9e80ed276fc4b9c9fadf29d8bf6b3576112f1a Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Thu, 21 Apr 2011 17:23:19 -0700 Subject: SECURITY: Move exec_permission RCU checks into security modules Right now all RCU walks fall back to reference walk when CONFIG_SECURITY is enabled, even though just the standard capability module is active. This is because security_inode_exec_permission unconditionally fails RCU walks. Move this decision to the low level security module. This requires passing the RCU flags down the security hook. This way at least the capability module and a few easy cases in selinux/smack work with RCU walks with CONFIG_SECURITY=y Signed-off-by: Andi Kleen Acked-by: Eric Paris Signed-off-by: Linus Torvalds --- include/linux/security.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/security.h b/include/linux/security.h index ca02f1716736..8ce59ef3e5af 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -1456,7 +1456,7 @@ struct security_operations { struct inode *new_dir, struct dentry *new_dentry); int (*inode_readlink) (struct dentry *dentry); int (*inode_follow_link) (struct dentry *dentry, struct nameidata *nd); - int (*inode_permission) (struct inode *inode, int mask); + int (*inode_permission) (struct inode *inode, int mask, unsigned flags); int (*inode_setattr) (struct dentry *dentry, struct iattr *attr); int (*inode_getattr) (struct vfsmount *mnt, struct dentry *dentry); int (*inode_setxattr) (struct dentry *dentry, const char *name, -- cgit v1.2.3 From dea3667bc3c2a0521e8d8855e407a49d9d70028c Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sun, 24 Apr 2011 07:58:46 -0700 Subject: vfs: get rid of insane dentry hashing rules The dentry hashing rules have been really quite complicated for a long while, in odd ways. That made functions like __d_drop() very fragile and non-obvious. In particular, whether a dentry was hashed or not was indicated with an explicit DCACHE_UNHASHED bit. That's despite the fact that the hash abstraction that the dentries use actually have a 'is this entry hashed or not' model (which is a simple test of the 'pprev' pointer). The reason that was done is because we used the normal 'is this entry unhashed' model to mark whether the dentry had _ever_ been hashed in the dentry hash tables, and that logic goes back many years (commit b3423415fbc2: "dcache: avoid RCU for never-hashed dentries"). That, in turn, meant that __d_drop had totally different unhashing logic for the dentry hash table case and for the anonymous dcache case, because in order to use the "is this dentry hashed" logic as a flag for whether it had ever been on the RCU hash table, we had to unhash such a dentry differently so that we'd never think that it wasn't 'unhashed' and wouldn't be free'd correctly. That's just insane. It made the logic really hard to follow, when there were two different kinds of "unhashed" states, and one of them (the one that used "list_bl_unhashed()") really had nothing at all to do with being unhashed per se, but with a very subtle lifetime rule instead. So turn all of it around, and make it logical. Instead of having a DENTRY_UNHASHED bit in d_flags to indicate whether the dentry is on the hash chains or not, use the hash chain unhashed logic for that. Suddenly "d_unhashed()" just uses "list_bl_unhashed()", and everything makes sense. And for the lifetime rule, just use an explicit DENTRY_RCUACCEES bit. If we ever insert the dentry into the dentry hash table so that it is visible to RCU lookup, we mark it DENTRY_RCUACCESS to show that it now needs the RCU lifetime rules. Now suddently that test at dentry free time makes sense too. And because unhashing now is sane and doesn't depend on where the dentry got unhashed from (because the dentry hash chain details doesn't have some subtle side effects), we can re-unify the __d_drop() logic and use common code for the unhashing. Also fix one more open-coded hash chain bit_spin_lock() that I missed in the previous chain locking cleanup commit. Signed-off-by: Linus Torvalds --- include/linux/dcache.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/dcache.h b/include/linux/dcache.h index f2afed4fa945..19d90a55541d 100644 --- a/include/linux/dcache.h +++ b/include/linux/dcache.h @@ -197,7 +197,7 @@ struct dentry_operations { * typically using d_splice_alias. */ #define DCACHE_REFERENCED 0x0008 /* Recently used, don't discard. */ -#define DCACHE_UNHASHED 0x0010 +#define DCACHE_RCUACCESS 0x0010 /* Entry has ever been RCU-visible */ #define DCACHE_INOTIFY_PARENT_WATCHED 0x0020 /* Parent inode is watched by inotify */ @@ -384,7 +384,7 @@ extern struct dentry *dget_parent(struct dentry *dentry); static inline int d_unhashed(struct dentry *dentry) { - return (dentry->d_flags & DCACHE_UNHASHED); + return hlist_bl_unhashed(&dentry->d_hash); } static inline int d_unlinked(struct dentry *dentry) -- cgit v1.2.3 From 3f7ac1d6671ebca7a955853f7127c937f7befbd3 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 16 Mar 2011 11:14:25 +0100 Subject: libata: Kill unused ATA_DFLAG_{H|D}IPM flags ATA_DFLAG_{H|D}IPM flags are no longer used. Kill them. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- include/linux/libata.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/libata.h b/include/linux/libata.h index 7f675aa81d87..3b4d223a6aff 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -137,8 +137,6 @@ enum { ATA_DFLAG_ACPI_PENDING = (1 << 5), /* ACPI resume action pending */ ATA_DFLAG_ACPI_FAILED = (1 << 6), /* ACPI on devcfg has failed */ ATA_DFLAG_AN = (1 << 7), /* AN configured */ - ATA_DFLAG_HIPM = (1 << 8), /* device supports HIPM */ - ATA_DFLAG_DIPM = (1 << 9), /* device supports DIPM */ ATA_DFLAG_DMADIR = (1 << 10), /* device requires DMADIR */ ATA_DFLAG_CFG_MASK = (1 << 12) - 1, -- cgit v1.2.3 From ae01b2493c3bf03c504c32ac4ebb01d528508db3 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 16 Mar 2011 11:14:55 +0100 Subject: libata: Implement ATA_FLAG_NO_DIPM and apply it to mcp65 NVIDIA mcp65 familiy of controllers cause command timeouts when DIPM is used. Implement ATA_FLAG_NO_DIPM and apply it. This problem was reported by Stefan Bader in the following thread. http://thread.gmane.org/gmane.linux.ide/48841 stable: applicable to 2.6.37 and 38. Signed-off-by: Tejun Heo Reported-by: Stefan Bader Cc: stable@kernel.org Signed-off-by: Jeff Garzik --- include/linux/libata.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/libata.h b/include/linux/libata.h index 3b4d223a6aff..04f32a3eb26b 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -196,6 +196,7 @@ enum { * management */ ATA_FLAG_SW_ACTIVITY = (1 << 22), /* driver supports sw activity * led */ + ATA_FLAG_NO_DIPM = (1 << 23), /* host not happy with DIPM */ /* bits 24:31 of ap->flags are reserved for LLD specific flags */ -- cgit v1.2.3 From fd954ae124e8a866e9cc1bc3de9a07be5492f608 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Sun, 24 Apr 2011 14:28:18 -0400 Subject: NFSv4.1: Don't loop forever in nfs4_proc_create_session If a server for some reason keeps sending NFS4ERR_DELAY errors, we can end up looping forever inside nfs4_proc_create_session, and so the usual mechanisms for detecting if the nfs_client is dead don't work. Fix this by ensuring that we loop inside the nfs4_state_manager thread instead. Signed-off-by: Trond Myklebust --- include/linux/nfs_fs_sb.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h index 216cea5db0aa..87694ca86914 100644 --- a/include/linux/nfs_fs_sb.h +++ b/include/linux/nfs_fs_sb.h @@ -47,6 +47,7 @@ struct nfs_client { #ifdef CONFIG_NFS_V4 u64 cl_clientid; /* constant */ + nfs4_verifier cl_confirm; /* Clientid verifier */ unsigned long cl_state; spinlock_t cl_lock; -- cgit v1.2.3 From 7494d00c7b826b6ceb79ec33892bd0ef59be5614 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Sun, 24 Apr 2011 14:28:45 -0400 Subject: SUNRPC: Allow RPC calls to return ETIMEDOUT instead of EIO On occasion, it is useful for the NFS layer to distinguish between soft timeouts and other EIO errors due to (say) encoding errors, or authentication errors. The following patch ensures that the default behaviour of the RPC layer remains to return EIO on soft timeouts (until we have audited all the callers). Signed-off-by: Trond Myklebust --- include/linux/sunrpc/sched.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/sunrpc/sched.h b/include/linux/sunrpc/sched.h index 3b94f804b852..f73c482ec9c6 100644 --- a/include/linux/sunrpc/sched.h +++ b/include/linux/sunrpc/sched.h @@ -128,12 +128,13 @@ struct rpc_task_setup { #define RPC_TASK_SOFT 0x0200 /* Use soft timeouts */ #define RPC_TASK_SOFTCONN 0x0400 /* Fail if can't connect */ #define RPC_TASK_SENT 0x0800 /* message was sent */ +#define RPC_TASK_TIMEOUT 0x1000 /* fail with ETIMEDOUT on timeout */ #define RPC_IS_ASYNC(t) ((t)->tk_flags & RPC_TASK_ASYNC) #define RPC_IS_SWAPPER(t) ((t)->tk_flags & RPC_TASK_SWAPPER) #define RPC_DO_ROOTOVERRIDE(t) ((t)->tk_flags & RPC_TASK_ROOTCREDS) #define RPC_ASSASSINATED(t) ((t)->tk_flags & RPC_TASK_KILLED) -#define RPC_IS_SOFT(t) ((t)->tk_flags & RPC_TASK_SOFT) +#define RPC_IS_SOFT(t) ((t)->tk_flags & (RPC_TASK_SOFT|RPC_TASK_TIMEOUT)) #define RPC_IS_SOFTCONN(t) ((t)->tk_flags & RPC_TASK_SOFTCONN) #define RPC_WAS_SENT(t) ((t)->tk_flags & RPC_TASK_SENT) -- cgit v1.2.3 From bf26c018490c2fce7fe9b629083b96ce0e6ad019 Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Thu, 7 Apr 2011 16:53:20 +0200 Subject: ptrace: Prepare to fix racy accesses on task breakpoints When a task is traced and is in a stopped state, the tracer may execute a ptrace request to examine the tracee state and get its task struct. Right after, the tracee can be killed and thus its breakpoints released. This can happen concurrently when the tracer is in the middle of reading or modifying these breakpoints, leading to dereferencing a freed pointer. Hence, to prepare the fix, create a generic breakpoint reference holding API. When a reference on the breakpoints of a task is held, the breakpoints won't be released until the last reference is dropped. After that, no more ptrace request on the task's breakpoints can be serviced for the tracer. Reported-by: Oleg Nesterov Signed-off-by: Frederic Weisbecker Cc: Ingo Molnar Cc: Peter Zijlstra Cc: Will Deacon Cc: Prasad Cc: Paul Mundt Cc: v2.6.33.. Link: http://lkml.kernel.org/r/1302284067-7860-2-git-send-email-fweisbec@gmail.com --- include/linux/ptrace.h | 13 ++++++++++++- include/linux/sched.h | 3 +++ 2 files changed, 15 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h index a1147e5dd245..9178d5cc0b01 100644 --- a/include/linux/ptrace.h +++ b/include/linux/ptrace.h @@ -189,6 +189,10 @@ static inline void ptrace_init_task(struct task_struct *child, bool ptrace) child->ptrace = current->ptrace; __ptrace_link(child, current->parent); } + +#ifdef CONFIG_HAVE_HW_BREAKPOINT + atomic_set(&child->ptrace_bp_refcnt, 1); +#endif } /** @@ -350,6 +354,13 @@ extern int task_current_syscall(struct task_struct *target, long *callno, unsigned long args[6], unsigned int maxargs, unsigned long *sp, unsigned long *pc); -#endif +#ifdef CONFIG_HAVE_HW_BREAKPOINT +extern int ptrace_get_breakpoints(struct task_struct *tsk); +extern void ptrace_put_breakpoints(struct task_struct *tsk); +#else +static inline void ptrace_put_breakpoints(struct task_struct *tsk) { } +#endif /* CONFIG_HAVE_HW_BREAKPOINT */ + +#endif /* __KERNEL */ #endif diff --git a/include/linux/sched.h b/include/linux/sched.h index 18d63cea2848..781abd137673 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1537,6 +1537,9 @@ struct task_struct { unsigned long memsw_nr_pages; /* uncharged mem+swap usage */ } memcg_batch; #endif +#ifdef CONFIG_HAVE_HW_BREAKPOINT + atomic_t ptrace_bp_refcnt; +#endif }; /* Future-safe accessor for struct task_struct's cpus_allowed. */ -- cgit v1.2.3 From 3dd2ee4824b668a635d6d2bb6bc73f33708cab9f Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Mon, 25 Apr 2011 18:10:58 -0700 Subject: bit_spinlock: don't play preemption games inside the busy loop When we are waiting for the bit-lock to be released, and are looping over the 'cpu_relax()' should not be doing anything else - otherwise we miss the point of trying to do the whole 'cpu_relax()'. Do the preemption enable/disable around the loop, rather than inside of it. Noticed when I was looking at the code generation for the dcache __d_drop usage, and the code just looked very odd. Signed-off-by: Linus Torvalds --- include/linux/bit_spinlock.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/bit_spinlock.h b/include/linux/bit_spinlock.h index e612575a2596..b4326bfa684f 100644 --- a/include/linux/bit_spinlock.h +++ b/include/linux/bit_spinlock.h @@ -23,11 +23,11 @@ static inline void bit_spin_lock(int bitnum, unsigned long *addr) preempt_disable(); #if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK) while (unlikely(test_and_set_bit_lock(bitnum, addr))) { - while (test_bit(bitnum, addr)) { - preempt_enable(); + preempt_enable(); + do { cpu_relax(); - preempt_disable(); - } + } while (test_bit(bitnum, addr)); + preempt_disable(); } #endif __acquire(bitlock); -- cgit v1.2.3 From 1879fd6a26571fd4e8e1f4bb3e7537bc936b1fe7 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Mon, 25 Apr 2011 14:01:36 -0400 Subject: add hlist_bl_lock/unlock helpers Now that the whole dcache_hash_bucket crap is gone, go all the way and also remove the weird locking layering violations for locking the hash buckets. Add hlist_bl_lock/unlock helpers to move the locking into the list abstraction instead of requiring each caller to open code it. After all allowing for the bit locks is the whole point of these helpers over the plain hlist variant. Signed-off-by: Christoph Hellwig Signed-off-by: Linus Torvalds --- include/linux/list_bl.h | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'include/linux') diff --git a/include/linux/list_bl.h b/include/linux/list_bl.h index 5bad17d1acde..31f9d75adc5b 100644 --- a/include/linux/list_bl.h +++ b/include/linux/list_bl.h @@ -2,6 +2,7 @@ #define _LINUX_LIST_BL_H #include +#include /* * Special version of lists, where head of the list has a lock in the lowest @@ -114,6 +115,16 @@ static inline void hlist_bl_del_init(struct hlist_bl_node *n) } } +static inline void hlist_bl_lock(struct hlist_bl_head *b) +{ + bit_spin_lock(0, (unsigned long *)b); +} + +static inline void hlist_bl_unlock(struct hlist_bl_head *b) +{ + __bit_spin_unlock(0, (unsigned long *)b); +} + /** * hlist_bl_for_each_entry - iterate over list of given type * @tpos: the type * to use as a loop cursor. -- cgit v1.2.3 From 28331a46d88459788c8fca72dbb0415cd7f514c9 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Wed, 27 Apr 2011 13:47:52 -0400 Subject: NFSv4: Ensure we request the ordinary fileid when doing readdirplus When readdir() returns a directory entry for the root of a mounted filesystem, Linux follows the old convention of returning the inode number of the covered directory (despite newer versions of POSIX declaring that this is a bug). To ensure this continues to work, the NFSv4 readdir implementation requests the 'mounted-on-fileid' from the server. However, readdirplus also needs to instantiate an inode for this entry, and for that, we also need to request the real fileid as per this patch. Signed-off-by: Trond Myklebust --- include/linux/nfs_xdr.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 78b101e487ea..890dce242639 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -50,6 +50,7 @@ struct nfs_fattr { } du; struct nfs_fsid fsid; __u64 fileid; + __u64 mounted_on_fileid; struct timespec atime; struct timespec mtime; struct timespec ctime; @@ -83,6 +84,7 @@ struct nfs_fattr { #define NFS_ATTR_FATTR_PRECHANGE (1U << 18) #define NFS_ATTR_FATTR_V4_REFERRAL (1U << 19) /* NFSv4 referral */ #define NFS_ATTR_FATTR_MOUNTPOINT (1U << 20) /* Treat as mountpoint */ +#define NFS_ATTR_FATTR_MOUNTED_ON_FILEID (1U << 21) #define NFS_ATTR_FATTR (NFS_ATTR_FATTR_TYPE \ | NFS_ATTR_FATTR_MODE \ -- cgit v1.2.3 From 26fc8775b51484d8c0a671198639c6d5ae60533e Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Fri, 15 Apr 2011 20:08:19 +0200 Subject: mmc: fix a race between card-detect rescan and clock-gate work instances Currently there is a race in the MMC core between a card-detect rescan work and the clock-gating work, scheduled from a command completion. Fix it by removing the dedicated clock-gating mutex and using the MMC standard locking mechanism instead. Signed-off-by: Guennadi Liakhovetski Cc: Simon Horman Cc: Magnus Damm Acked-by: Linus Walleij Cc: Signed-off-by: Chris Ball --- include/linux/mmc/host.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index bcb793ec7374..eb792cb6d745 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -183,7 +183,6 @@ struct mmc_host { struct work_struct clk_gate_work; /* delayed clock gate */ unsigned int clk_old; /* old clock value cache */ spinlock_t clk_lock; /* lock for clk fields */ - struct mutex clk_gate_mutex; /* mutex for clock gating */ #endif /* host specific block data */ -- cgit v1.2.3 From acad9853b95df6a3887f52e0ec88e4a77119ee28 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Wed, 27 Apr 2011 23:08:51 -0700 Subject: Input: wm831x-ts - allow IRQ flags to be specified This allows maximum flexibility for configuring the direct GPIO based interrupts. Signed-off-by: Mark Brown Signed-off-by: Dmitry Torokhov --- include/linux/mfd/wm831x/pdata.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/wm831x/pdata.h b/include/linux/mfd/wm831x/pdata.h index 173086d42af4..6b0eb130efb8 100644 --- a/include/linux/mfd/wm831x/pdata.h +++ b/include/linux/mfd/wm831x/pdata.h @@ -81,7 +81,9 @@ struct wm831x_touch_pdata { int rpu; /** Pen down sensitivity resistor divider */ int pressure; /** Report pressure (boolean) */ unsigned int data_irq; /** Touch data ready IRQ */ + int data_irqf; /** IRQ flags for data ready IRQ */ unsigned int pd_irq; /** Touch pendown detect IRQ */ + int pd_irqf; /** IRQ flags for pen down IRQ */ }; enum wm831x_watchdog_action { -- cgit v1.2.3 From 78f11a255749d09025f54d4e2df4fbcb031530e2 Mon Sep 17 00:00:00 2001 From: Andrea Arcangeli Date: Wed, 27 Apr 2011 15:26:45 -0700 Subject: mm: thp: fix /dev/zero MAP_PRIVATE and vm_flags cleanups The huge_memory.c THP page fault was allowed to run if vm_ops was null (which would succeed for /dev/zero MAP_PRIVATE, as the f_op->mmap wouldn't setup a special vma->vm_ops and it would fallback to regular anonymous memory) but other THP logics weren't fully activated for vmas with vm_file not NULL (/dev/zero has a not NULL vma->vm_file). So this removes the vm_file checks so that /dev/zero also can safely use THP (the other albeit safer approach to fix this bug would have been to prevent the THP initial page fault to run if vm_file was set). After removing the vm_file checks, this also makes huge_memory.c stricter in khugepaged for the DEBUG_VM=y case. It doesn't replace the vm_file check with a is_pfn_mapping check (but it keeps checking for VM_PFNMAP under VM_BUG_ON) because for a is_cow_mapping() mapping VM_PFNMAP should only be allowed to exist before the first page fault, and in turn when vma->anon_vma is null (so preventing khugepaged registration). So I tend to think the previous comment saying if vm_file was set, VM_PFNMAP might have been set and we could still be registered in khugepaged (despite anon_vma was not NULL to be registered in khugepaged) was too paranoid. The is_linear_pfn_mapping check is also I think superfluous (as described by comment) but under DEBUG_VM it is safe to stay. Addresses https://bugzilla.kernel.org/show_bug.cgi?id=33682 Signed-off-by: Andrea Arcangeli Reported-by: Caspar Zhang Acked-by: Mel Gorman Acked-by: Rik van Riel Cc: [2.6.38.x] Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/huge_mm.h | 2 +- include/linux/mm.h | 3 ++- 2 files changed, 3 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h index df29c8fde36b..8847c8c29791 100644 --- a/include/linux/huge_mm.h +++ b/include/linux/huge_mm.h @@ -117,7 +117,7 @@ static inline void vma_adjust_trans_huge(struct vm_area_struct *vma, unsigned long end, long adjust_next) { - if (!vma->anon_vma || vma->vm_ops || vma->vm_file) + if (!vma->anon_vma || vma->vm_ops) return; __vma_adjust_trans_huge(vma, start, end, adjust_next); } diff --git a/include/linux/mm.h b/include/linux/mm.h index 692dbae6ffa7..2348db26bc3d 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -137,7 +137,8 @@ extern unsigned int kobjsize(const void *objp); #define VM_RandomReadHint(v) ((v)->vm_flags & VM_RAND_READ) /* - * special vmas that are non-mergable, non-mlock()able + * Special vmas that are non-mergable, non-mlock()able. + * Note: mm/huge_memory.c VM_NO_THP depends on this definition. */ #define VM_SPECIAL (VM_IO | VM_DONTEXPAND | VM_RESERVED | VM_PFNMAP) -- cgit v1.2.3 From 68972efa657040f891c7eda07c7da8c8dd576788 Mon Sep 17 00:00:00 2001 From: Paul Stewart Date: Thu, 28 Apr 2011 05:43:37 +0000 Subject: usbnet: Resubmit interrupt URB if device is open Resubmit interrupt URB if device is open. Use a flag set in usbnet_open() to determine this state. Also kill and free interrupt URB in usbnet_disconnect(). [Rebased off git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git] Signed-off-by: Paul Stewart Signed-off-by: David S. Miller --- include/linux/usb/usbnet.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/usb/usbnet.h b/include/linux/usb/usbnet.h index 0e1855079fbb..605b0aa8d852 100644 --- a/include/linux/usb/usbnet.h +++ b/include/linux/usb/usbnet.h @@ -68,6 +68,7 @@ struct usbnet { # define EVENT_RX_PAUSED 5 # define EVENT_DEV_WAKING 6 # define EVENT_DEV_ASLEEP 7 +# define EVENT_DEV_OPEN 8 }; static inline struct usb_driver *driver_of(struct usb_interface *intf) -- cgit v1.2.3 From 5d30b10bd68df007e7ae21e77d1e0ce184b53040 Mon Sep 17 00:00:00 2001 From: Eric Paris Date: Thu, 28 Apr 2011 15:55:52 -0400 Subject: flex_array: flex_array_prealloc takes a number of elements, not an end Change flex_array_prealloc to take the number of elements for which space should be allocated instead of the last (inclusive) element. Users and documentation are updated accordingly. flex_arrays got introduced before they had users. When folks started using it, they ended up needing a different API than was coded up originally. This swaps over to the API that folks apparently need. Based-on-patch-by: Steffen Klassert Signed-off-by: Eric Paris Tested-by: Chris Richards Acked-by: Dave Hansen Cc: stable@kernel.org [2.6.38+] --- include/linux/flex_array.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/flex_array.h b/include/linux/flex_array.h index 70e4efabe0fb..ebeb2f3ad068 100644 --- a/include/linux/flex_array.h +++ b/include/linux/flex_array.h @@ -61,7 +61,7 @@ struct flex_array { struct flex_array *flex_array_alloc(int element_size, unsigned int total, gfp_t flags); int flex_array_prealloc(struct flex_array *fa, unsigned int start, - unsigned int end, gfp_t flags); + unsigned int nr_elements, gfp_t flags); void flex_array_free(struct flex_array *fa); void flex_array_free_parts(struct flex_array *fa); int flex_array_put(struct flex_array *fa, unsigned int element_nr, void *src, -- cgit v1.2.3 From a6e5e2be44616c8400f9ec2f635b10f8e579217c Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Sun, 1 May 2011 18:18:49 +0200 Subject: i2c-i801: Move device ID definitions to driver Move the SMBus device ID definitions of recent devices from pci_ids.h to the i2c-i801.c driver file. They don't have to be shared, as they are clearly identified and only used in this driver. In the future, such IDs will go to i2c-i801 directly. This will make adding support for new devices much faster and easier, as it will avoid cross- subsystem patch sets and merge conflicts. Signed-off-by: Jean Delvare Cc: Seth Heasley Acked-by: Jesse Barnes --- include/linux/pci_ids.h | 4 ---- 1 file changed, 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h index 4e2c9150a785..8abe8d78c4bf 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -2477,15 +2477,12 @@ #define PCI_DEVICE_ID_INTEL_82840_HB 0x1a21 #define PCI_DEVICE_ID_INTEL_82845_HB 0x1a30 #define PCI_DEVICE_ID_INTEL_IOAT 0x1a38 -#define PCI_DEVICE_ID_INTEL_COUGARPOINT_SMBUS 0x1c22 #define PCI_DEVICE_ID_INTEL_COUGARPOINT_LPC_MIN 0x1c41 #define PCI_DEVICE_ID_INTEL_COUGARPOINT_LPC_MAX 0x1c5f -#define PCI_DEVICE_ID_INTEL_PATSBURG_SMBUS 0x1d22 #define PCI_DEVICE_ID_INTEL_PATSBURG_LPC_0 0x1d40 #define PCI_DEVICE_ID_INTEL_PATSBURG_LPC_1 0x1d41 #define PCI_DEVICE_ID_INTEL_DH89XXCC_LPC_MIN 0x2310 #define PCI_DEVICE_ID_INTEL_DH89XXCC_LPC_MAX 0x231f -#define PCI_DEVICE_ID_INTEL_DH89XXCC_SMBUS 0x2330 #define PCI_DEVICE_ID_INTEL_82801AA_0 0x2410 #define PCI_DEVICE_ID_INTEL_82801AA_1 0x2411 #define PCI_DEVICE_ID_INTEL_82801AA_3 0x2413 @@ -2696,7 +2693,6 @@ #define PCI_DEVICE_ID_INTEL_ICH10_5 0x3a60 #define PCI_DEVICE_ID_INTEL_5_3400_SERIES_LPC_MIN 0x3b00 #define PCI_DEVICE_ID_INTEL_5_3400_SERIES_LPC_MAX 0x3b1f -#define PCI_DEVICE_ID_INTEL_5_3400_SERIES_SMBUS 0x3b30 #define PCI_DEVICE_ID_INTEL_IOAT_SNB 0x402f #define PCI_DEVICE_ID_INTEL_5100_16 0x65f0 #define PCI_DEVICE_ID_INTEL_5100_21 0x65f5 -- cgit v1.2.3 From 30106b8ce2cc2243514116d6f29086e6deecc754 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Wed, 4 May 2011 15:38:19 +0200 Subject: slub: Fix the lockless code on 32-bit platforms with no 64-bit cmpxchg The SLUB allocator use of the cmpxchg_double logic was wrong: it actually needs the irq-safe one. That happens automatically when we use the native unlocked 'cmpxchg8b' instruction, but when compiling the kernel for older x86 CPUs that do not support that instruction, we fall back to the generic emulation code. And if you don't specify that you want the irq-safe version, the generic code ends up just open-coding the cmpxchg8b equivalent without any protection against interrupts or preemption. Which definitely doesn't work for SLUB. This was reported by Werner Landgraf , who saw instability with his distro-kernel that was compiled to support pretty much everything under the sun. Most big Linux distributions tend to compile for PPro and later, and would never have noticed this problem. This also fixes the prototypes for the irqsafe cmpxchg_double functions to use 'bool' like they should. [ Btw, that whole "generic code defaults to no protection" design just sounds stupid - if the code needs no protection, there is no reason to use "cmpxchg_double" to begin with. So we should probably just remove the unprotected version entirely as pointless. - Linus ] Signed-off-by: Thomas Gleixner Reported-and-tested-by: werner Acked-and-tested-by: Ingo Molnar Acked-by: Christoph Lameter Cc: Pekka Enberg Cc: Jens Axboe Cc: Tejun Heo Link: http://lkml.kernel.org/r/alpine.LFD.2.02.1105041539050.3005@ionos Signed-off-by: Ingo Molnar Signed-off-by: Linus Torvalds --- include/linux/percpu.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/percpu.h b/include/linux/percpu.h index 3a5c4449fd36..8b97308e65df 100644 --- a/include/linux/percpu.h +++ b/include/linux/percpu.h @@ -948,7 +948,7 @@ do { \ irqsafe_generic_cpu_cmpxchg_double(pcp1, pcp2, oval1, oval2, nval1, nval2) # endif # define irqsafe_cpu_cmpxchg_double(pcp1, pcp2, oval1, oval2, nval1, nval2) \ - __pcpu_double_call_return_int(irqsafe_cpu_cmpxchg_double_, (pcp1), (pcp2), (oval1), (oval2), (nval1), (nval2)) + __pcpu_double_call_return_bool(irqsafe_cpu_cmpxchg_double_, (pcp1), (pcp2), (oval1), (oval2), (nval1), (nval2)) #endif #endif /* __LINUX_PERCPU_H */ -- cgit v1.2.3 From a3a4a5acd3bd2f6f1e102e1f1b9d2e2bb320a7fd Mon Sep 17 00:00:00 2001 From: Arjan van de Ven Date: Thu, 5 May 2011 23:55:18 -0400 Subject: Regression: partial revert "tracing: Remove lock_depth from event entry" This partially reverts commit e6e1e2593592a8f6f6380496655d8c6f67431266. That commit changed the structure layout of the trace structure, which in turn broke PowerTOP (1.9x generation) quite badly. I appreciate not wanting to expose the variable in question, and PowerTOP was not using it, so I've replaced the variable with just a padding field - that way if in the future a new field is needed it can just use this padding field. Signed-off-by: Arjan van de Ven Signed-off-by: Linus Torvalds --- include/linux/ftrace_event.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/ftrace_event.h b/include/linux/ftrace_event.h index 22b32af1b5ec..b5a550a39a70 100644 --- a/include/linux/ftrace_event.h +++ b/include/linux/ftrace_event.h @@ -37,6 +37,7 @@ struct trace_entry { unsigned char flags; unsigned char preempt_count; int pid; + int padding; }; #define FTRACE_MAX_EVENT \ -- cgit v1.2.3 From a09a79f66874c905af35d5bb5e5f2fdc7b6b894d Mon Sep 17 00:00:00 2001 From: Mikulas Patocka Date: Mon, 9 May 2011 13:01:09 +0200 Subject: Don't lock guardpage if the stack is growing up Linux kernel excludes guard page when performing mlock on a VMA with down-growing stack. However, some architectures have up-growing stack and locking the guard page should be excluded in this case too. This patch fixes lvm2 on PA-RISC (and possibly other architectures with up-growing stack). lvm2 calculates number of used pages when locking and when unlocking and reports an internal error if the numbers mismatch. [ Patch changed fairly extensively to also fix /proc//maps for the grows-up case, and to move things around a bit to clean it all up and share the infrstructure with the /proc bits. Tested on ia64 that has both grow-up and grow-down segments - Linus ] Signed-off-by: Mikulas Patocka Tested-by: Tony Luck Cc: stable@kernel.org Signed-off-by: Linus Torvalds --- include/linux/mm.h | 24 +++++++++++++++++++++++- 1 file changed, 23 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index 2348db26bc3d..6507dde38b16 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1011,11 +1011,33 @@ int set_page_dirty_lock(struct page *page); int clear_page_dirty_for_io(struct page *page); /* Is the vma a continuation of the stack vma above it? */ -static inline int vma_stack_continue(struct vm_area_struct *vma, unsigned long addr) +static inline int vma_growsdown(struct vm_area_struct *vma, unsigned long addr) { return vma && (vma->vm_end == addr) && (vma->vm_flags & VM_GROWSDOWN); } +static inline int stack_guard_page_start(struct vm_area_struct *vma, + unsigned long addr) +{ + return (vma->vm_flags & VM_GROWSDOWN) && + (vma->vm_start == addr) && + !vma_growsdown(vma->vm_prev, addr); +} + +/* Is the vma a continuation of the stack vma below it? */ +static inline int vma_growsup(struct vm_area_struct *vma, unsigned long addr) +{ + return vma && (vma->vm_start == addr) && (vma->vm_flags & VM_GROWSUP); +} + +static inline int stack_guard_page_end(struct vm_area_struct *vma, + unsigned long addr) +{ + return (vma->vm_flags & VM_GROWSUP) && + (vma->vm_end == addr) && + !vma_growsup(vma->vm_next, addr); +} + extern unsigned long move_page_tables(struct vm_area_struct *vma, unsigned long old_addr, struct vm_area_struct *new_vma, unsigned long new_addr, unsigned long len); -- cgit v1.2.3