From da970e69efb9fd0be0c23ace5bde42d4caf17b40 Mon Sep 17 00:00:00 2001 From: Imre Deak Date: Thu, 18 Jan 2007 00:44:41 -0500 Subject: Input: ads7846 - pluggable filtering logic Some LCDs like the LS041Y3 require a customized filtering logic for reliable readings, so make the filtering function replacable through platform specific hooks. Signed-off-by: Imre Deak Signed-off-by: Juha Yrjola Signed-off-by: David Brownell Signed-off-by: Dmitry Torokhov --- include/linux/spi/ads7846.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/linux') diff --git a/include/linux/spi/ads7846.h b/include/linux/spi/ads7846.h index adb3dafd33e9..1663f940ca11 100644 --- a/include/linux/spi/ads7846.h +++ b/include/linux/spi/ads7846.h @@ -5,6 +5,12 @@ * * It's OK if the min/max values are zero. */ +enum ads7846_filter { + ADS7846_FILTER_OK, + ADS7846_FILTER_REPEAT, + ADS7846_FILTER_IGNORE, +}; + struct ads7846_platform_data { u16 model; /* 7843, 7845, 7846. */ u16 vref_delay_usecs; /* 0 for external vref; etc */ @@ -21,5 +27,9 @@ struct ads7846_platform_data { u16 debounce_rep; /* additional consecutive good readings * required after the first two */ int (*get_pendown_state)(void); + int (*filter_init) (struct ads7846_platform_data *pdata, + void **filter_data); + int (*filter) (void *filter_data, int data_idx, int *val); + void (*filter_cleanup)(void *filter_data); }; -- cgit v1.2.3 From de2defd96d7d92fe8b5f9cf2bfd385d8d4819923 Mon Sep 17 00:00:00 2001 From: Imre Deak Date: Thu, 18 Jan 2007 00:45:21 -0500 Subject: Input: ads7846 - optionally leave Vref on during differential measurements On some LCDs leaving the Vref on provides much better readings. Signed-off-by: Jarkko Oikarinen Signed-off-by: Imre Deak Signed-off-by: Juha Yrjola Signed-off-by: David Brownell Signed-off-by: Dmitry Torokhov --- include/linux/spi/ads7846.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/spi/ads7846.h b/include/linux/spi/ads7846.h index 1663f940ca11..3387e44dfd13 100644 --- a/include/linux/spi/ads7846.h +++ b/include/linux/spi/ads7846.h @@ -14,6 +14,8 @@ enum ads7846_filter { struct ads7846_platform_data { u16 model; /* 7843, 7845, 7846. */ u16 vref_delay_usecs; /* 0 for external vref; etc */ + int keep_vref_on:1; /* set to keep vref on for differential + * measurements as well */ u16 x_plate_ohms; u16 y_plate_ohms; -- cgit v1.2.3 From 9b13b682a68d5bcf09c75da73d4e61d92eba4c84 Mon Sep 17 00:00:00 2001 From: Alan Date: Thu, 7 Dec 2006 08:59:14 -0800 Subject: [PATCH] pata_it8213: Add new driver for the IT8213 card Add a driver for the IT8213 which is a single channel ICH-ish PATA controller. As it is very different to the IT8211/2 it gets its own driver. There is a legacy drivers/ide driver also available and I'll post that once I get time to test it all out (probably early January). If anyone else needs the drivers/ide driver and wants to do the merge for drivers/ide (Bart ??) then I'll forward it. [akpm@osdl.org: add PCI ID, constify needed_pio[]] Signed-off-by: Alan Cox Cc: Jeff Garzik Signed-off-by: Andrew Morton Signed-off-by: Jeff Garzik --- 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 6252cb9092dd..4c8966a082af 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -1633,6 +1633,7 @@ #define PCI_VENDOR_ID_ITE 0x1283 #define PCI_DEVICE_ID_ITE_8211 0x8211 #define PCI_DEVICE_ID_ITE_8212 0x8212 +#define PCI_DEVICE_ID_ITE_8213 0x8213 #define PCI_DEVICE_ID_ITE_8872 0x8872 #define PCI_DEVICE_ID_ITE_IT8330G_0 0xe886 -- cgit v1.2.3 From f20b16ff7c19d1c369ee07470952aca093551ed0 Mon Sep 17 00:00:00 2001 From: Jeff Garzik Date: Mon, 11 Dec 2006 11:14:06 -0500 Subject: [libata] trim trailing whitespace Most of these contributed by that mysterious figger known as A.C. Signed-off-by: Jeff Garzik --- include/linux/libata.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/libata.h b/include/linux/libata.h index 91bb8ceef0b5..84f12e8cae71 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -308,7 +308,7 @@ enum { * most devices. */ ATA_SPINUP_WAIT = 8000, - + /* Horkage types. May be set by libata or controller on drives (some horkage may be drive/controller pair dependant */ -- cgit v1.2.3 From d4013f07bd5380178bf28ef1cd76649779367288 Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Fri, 15 Dec 2006 13:08:50 -0800 Subject: [PATCH] pci: Move PCI_VDEVICE from libata to core Updated diff which doesn't move the comment as per Jeff's request and corrects the docs as per report on l/k Signed-off-by: Alan Cox Signed-off-by: Andrew Morton Signed-off-by: Jeff Garzik --- include/linux/libata.h | 4 ---- 1 file changed, 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/libata.h b/include/linux/libata.h index 84f12e8cae71..dab4dc505ce7 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -109,10 +109,6 @@ static inline u32 ata_msg_init(int dval, int default_msg_enable_bits) #define ATA_TAG_POISON 0xfafbfcfdU /* move to PCI layer? */ -#define PCI_VDEVICE(vendor, device) \ - PCI_VENDOR_ID_##vendor, (device), \ - PCI_ANY_ID, PCI_ANY_ID, 0, 0 - static inline struct device *pci_dev_to_dev(struct pci_dev *pdev) { return &pdev->dev; -- cgit v1.2.3 From c9f89475a5b184e9a6077b995ce340e6804c1b1a Mon Sep 17 00:00:00 2001 From: Conke Hu Date: Tue, 9 Jan 2007 05:32:51 -0500 Subject: Add pci class code for SATA & AHCI, and replace some magic numbers. Signed-off-by: Conke Hu Signed-off-by: Jeff Garzik --- 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 4c8966a082af..e67b68ca235a 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -15,6 +15,8 @@ #define PCI_CLASS_STORAGE_FLOPPY 0x0102 #define PCI_CLASS_STORAGE_IPI 0x0103 #define PCI_CLASS_STORAGE_RAID 0x0104 +#define PCI_CLASS_STORAGE_SATA 0x0106 +#define PCI_CLASS_STORAGE_SATA_AHCI 0x010601 #define PCI_CLASS_STORAGE_SAS 0x0107 #define PCI_CLASS_STORAGE_OTHER 0x0180 -- cgit v1.2.3 From a0cf733b333eeeafb7324e2897448006c693c26c Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 2 Jan 2007 20:18:49 +0900 Subject: libata: straighten out ATA_ID_* constants * Kill _OFS suffixes in ATA_ID_{SERNO|FW_REV|PROD}_OFS for consistency with other ATA_ID_* constants. * Kill ATA_SERNO_LEN * Add and use ATA_ID_SERNO_LEN, ATA_ID_FW_REV_LEN and ATA_ID_PROD_LEN. This change also makes ata_device_blacklisted() use proper length for fwrev. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- include/linux/ata.h | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ata.h b/include/linux/ata.h index 1df941648a57..3a50739e25a6 100644 --- a/include/linux/ata.h +++ b/include/linux/ata.h @@ -44,9 +44,9 @@ enum { ATA_MAX_SECTORS_LBA48 = 65535,/* TODO: 65536? */ ATA_ID_WORDS = 256, - ATA_ID_SERNO_OFS = 10, - ATA_ID_FW_REV_OFS = 23, - ATA_ID_PROD_OFS = 27, + ATA_ID_SERNO = 10, + ATA_ID_FW_REV = 23, + ATA_ID_PROD = 27, ATA_ID_OLD_PIO_MODES = 51, ATA_ID_FIELD_VALID = 53, ATA_ID_MWDMA_MODES = 63, @@ -58,8 +58,11 @@ enum { ATA_ID_MAJOR_VER = 80, ATA_ID_PIO4 = (1 << 1), + ATA_ID_SERNO_LEN = 20, + ATA_ID_FW_REV_LEN = 8, + ATA_ID_PROD_LEN = 40, + ATA_PCI_CTL_OFS = 2, - ATA_SERNO_LEN = 20, ATA_UDMA0 = (1 << 0), ATA_UDMA1 = ATA_UDMA0 | (1 << 1), ATA_UDMA2 = ATA_UDMA1 | (1 << 2), -- cgit v1.2.3 From 553c4aa630af7bc885e056d0436e4eb7f238579b Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 26 Dec 2006 19:39:50 +0900 Subject: libata: handle pci_enable_device() failure while resuming Handle pci_enable_device() failure while resuming. This patch kills the "ignoring return value of 'pci_enable_device'" warning message and propagates __must_check through ata_pci_device_do_resume(). Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- include/linux/libata.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/libata.h b/include/linux/libata.h index dab4dc505ce7..a8ecaaad55ff 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -716,7 +716,7 @@ extern int ata_pci_init_one (struct pci_dev *pdev, struct ata_port_info **port_i unsigned int n_ports); extern void ata_pci_remove_one (struct pci_dev *pdev); extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg); -extern void ata_pci_device_do_resume(struct pci_dev *pdev); +extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev); extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg); extern int ata_pci_device_resume(struct pci_dev *pdev); extern int ata_pci_clear_simplex(struct pci_dev *pdev); -- cgit v1.2.3 From 726f0785b608d09bdd64bdbadc09217ebbf9920e Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 3 Jan 2007 17:30:39 +0900 Subject: libata: kill qc->nsect and cursect libata used two separate sets of variables to record request size and current offset for ATA and ATAPI. This is confusing and fragile. This patch replaces qc->nsect/cursect with qc->nbytes/curbytes and kills them. Also, ata_pio_sector() is updated to use bytes for qc->cursg_ofs instead of sectors. The field used to be used in bytes for ATAPI and in sectors for ATA. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- include/linux/libata.h | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/libata.h b/include/linux/libata.h index a8ecaaad55ff..a2458dfefb17 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -427,9 +427,6 @@ struct ata_queued_cmd { unsigned int pad_len; - unsigned int nsect; - unsigned int cursect; - unsigned int nbytes; unsigned int curbytes; @@ -1145,8 +1142,7 @@ static inline void ata_qc_reinit(struct ata_queued_cmd *qc) qc->dma_dir = DMA_NONE; qc->__sg = NULL; qc->flags = 0; - qc->cursect = qc->cursg = qc->cursg_ofs = 0; - qc->nsect = 0; + qc->cursg = qc->cursg_ofs = 0; qc->nbytes = qc->curbytes = 0; qc->n_elem = 0; qc->err_mask = 0; -- cgit v1.2.3 From 9ac7849e35f705830f7b016ff272b0ff1f7ff759 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Sat, 20 Jan 2007 16:00:26 +0900 Subject: devres: device resource management Implement device resource management, in short, devres. A device driver can allocate arbirary size of devres data which is associated with a release function. On driver detach, release function is invoked on the devres data, then, devres data is freed. devreses are typed by associated release functions. Some devreses are better represented by single instance of the type while others need multiple instances sharing the same release function. Both usages are supported. devreses can be grouped using devres group such that a device driver can easily release acquired resources halfway through initialization or selectively release resources (e.g. resources for port 1 out of 4 ports). This patch adds devres core including documentation and the following managed interfaces. * alloc/free : devm_kzalloc(), devm_kzfree() * IO region : devm_request_region(), devm_release_region() * IRQ : devm_request_irq(), devm_free_irq() * DMA : dmam_alloc_coherent(), dmam_free_coherent(), dmam_declare_coherent_memory(), dmam_pool_create(), dmam_pool_destroy() * PCI : pcim_enable_device(), pcim_pin_device(), pci_is_managed() * iomap : devm_ioport_map(), devm_ioport_unmap(), devm_ioremap(), devm_ioremap_nocache(), devm_iounmap(), pcim_iomap_table(), pcim_iomap(), pcim_iounmap() Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- include/linux/device.h | 38 ++++++++++++++++++++++++++++++++++++++ include/linux/dma-mapping.h | 29 ++++++++++++++++++++++++++++- include/linux/dmapool.h | 7 +++++++ include/linux/interrupt.h | 6 ++++++ include/linux/io.h | 17 +++++++++++++++++ include/linux/ioport.h | 20 ++++++++++++++++++++ include/linux/pci.h | 9 +++++++++ 7 files changed, 125 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/device.h b/include/linux/device.h index 5ca1cdba563a..26e4692f2d1a 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -354,6 +354,41 @@ extern int __must_check device_create_bin_file(struct device *dev, struct bin_attribute *attr); extern void device_remove_bin_file(struct device *dev, struct bin_attribute *attr); + +/* device resource management */ +typedef void (*dr_release_t)(struct device *dev, void *res); +typedef int (*dr_match_t)(struct device *dev, void *res, void *match_data); + +#ifdef CONFIG_DEBUG_DEVRES +extern void * __devres_alloc(dr_release_t release, size_t size, gfp_t gfp, + const char *name); +#define devres_alloc(release, size, gfp) \ + __devres_alloc(release, size, gfp, #release) +#else +extern void * devres_alloc(dr_release_t release, size_t size, gfp_t gfp); +#endif +extern void devres_free(void *res); +extern void devres_add(struct device *dev, void *res); +extern void * devres_find(struct device *dev, dr_release_t release, + dr_match_t match, void *match_data); +extern void * devres_get(struct device *dev, void *new_res, + dr_match_t match, void *match_data); +extern void * devres_remove(struct device *dev, dr_release_t release, + dr_match_t match, void *match_data); +extern int devres_destroy(struct device *dev, dr_release_t release, + dr_match_t match, void *match_data); + +/* devres group */ +extern void * __must_check devres_open_group(struct device *dev, void *id, + gfp_t gfp); +extern void devres_close_group(struct device *dev, void *id); +extern void devres_remove_group(struct device *dev, void *id); +extern int devres_release_group(struct device *dev, void *id); + +/* managed kzalloc/kfree for device drivers, no kmalloc, always use kzalloc */ +extern void *devm_kzalloc(struct device *dev, size_t size, gfp_t gfp); +extern void devm_kfree(struct device *dev, void *p); + struct device { struct klist klist_children; struct klist_node knode_parent; /* node in sibling list */ @@ -397,6 +432,9 @@ struct device { /* arch specific additions */ struct dev_archdata archdata; + spinlock_t devres_lock; + struct list_head devres_head; + /* class_device migration path */ struct list_head node; struct class *class; diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h index ff203c465fed..9a663c6db16a 100644 --- a/include/linux/dma-mapping.h +++ b/include/linux/dma-mapping.h @@ -66,6 +66,33 @@ dma_mark_declared_memory_occupied(struct device *dev, } #endif -#endif +/* + * Managed DMA API + */ +extern void *dmam_alloc_coherent(struct device *dev, size_t size, + dma_addr_t *dma_handle, gfp_t gfp); +extern void dmam_free_coherent(struct device *dev, size_t size, void *vaddr, + dma_addr_t dma_handle); +extern void *dmam_alloc_noncoherent(struct device *dev, size_t size, + dma_addr_t *dma_handle, gfp_t gfp); +extern void dmam_free_noncoherent(struct device *dev, size_t size, void *vaddr, + dma_addr_t dma_handle); +#ifdef ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY +extern int dmam_declare_coherent_memory(struct device *dev, dma_addr_t bus_addr, + dma_addr_t device_addr, size_t size, + int flags); +extern void dmam_release_declared_memory(struct device *dev); +#else /* ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY */ +static inline int dmam_declare_coherent_memory(struct device *dev, + dma_addr_t bus_addr, dma_addr_t device_addr, + size_t size, gfp_t gfp) +{ + return 0; +} +static inline void dmam_release_declared_memory(struct device *dev) +{ +} +#endif /* ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY */ +#endif diff --git a/include/linux/dmapool.h b/include/linux/dmapool.h index 76f12f46db7f..022e34fcbd1b 100644 --- a/include/linux/dmapool.h +++ b/include/linux/dmapool.h @@ -24,5 +24,12 @@ void *dma_pool_alloc(struct dma_pool *pool, gfp_t mem_flags, void dma_pool_free(struct dma_pool *pool, void *vaddr, dma_addr_t addr); +/* + * Managed DMA pool + */ +struct dma_pool *dmam_pool_create(const char *name, struct device *dev, + size_t size, size_t align, size_t allocation); +void dmam_pool_destroy(struct dma_pool *pool); + #endif diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h index e36e86c869fb..5a8ba0b8ccba 100644 --- a/include/linux/interrupt.h +++ b/include/linux/interrupt.h @@ -12,6 +12,7 @@ #include #include #include +#include #include #include #include @@ -83,6 +84,11 @@ extern int request_irq(unsigned int, irq_handler_t handler, unsigned long, const char *, void *); extern void free_irq(unsigned int, void *); +extern int devm_request_irq(struct device *dev, unsigned int irq, + irq_handler_t handler, unsigned long irqflags, + const char *devname, void *dev_id); +extern void devm_free_irq(struct device *dev, unsigned int irq, void *dev_id); + /* * On lockdep we dont want to enable hardirqs in hardirq * context. Use local_irq_enable_in_hardirq() to annotate diff --git a/include/linux/io.h b/include/linux/io.h index 81877ea39309..f5edf9c5de0a 100644 --- a/include/linux/io.h +++ b/include/linux/io.h @@ -28,6 +28,23 @@ void __iowrite64_copy(void __iomem *to, const void *from, size_t count); int ioremap_page_range(unsigned long addr, unsigned long end, unsigned long phys_addr, pgprot_t prot); +/* + * Managed iomap interface + */ +void __iomem * devm_ioport_map(struct device *dev, unsigned long port, + unsigned int nr); +void devm_ioport_unmap(struct device *dev, void __iomem *addr); + +void __iomem * devm_ioremap(struct device *dev, unsigned long offset, + unsigned long size); +void __iomem * devm_ioremap_nocache(struct device *dev, unsigned long offset, + unsigned long size); +void devm_iounmap(struct device *dev, void __iomem *addr); + +void __iomem * pcim_iomap(struct pci_dev *pdev, int bar, unsigned long maxlen); +void pcim_iounmap(struct pci_dev *pdev, void __iomem *addr); +void __iomem * const * pcim_iomap_table(struct pci_dev *pdev); + /** * check_signature - find BIOS signatures * @io_addr: mmio address to check diff --git a/include/linux/ioport.h b/include/linux/ioport.h index 15228d79c5bc..6859a3b14088 100644 --- a/include/linux/ioport.h +++ b/include/linux/ioport.h @@ -137,4 +137,24 @@ static inline int __deprecated check_region(resource_size_t s, { return __check_region(&ioport_resource, s, n); } + +/* Wrappers for managed devices */ +struct device; +#define devm_request_region(dev,start,n,name) \ + __devm_request_region(dev, &ioport_resource, (start), (n), (name)) +#define devm_request_mem_region(dev,start,n,name) \ + __devm_request_region(dev, &iomem_resource, (start), (n), (name)) + +extern struct resource * __devm_request_region(struct device *dev, + struct resource *parent, resource_size_t start, + resource_size_t n, const char *name); + +#define devm_release_region(start,n) \ + __devm_release_region(dev, &ioport_resource, (start), (n)) +#define devm_release_mem_region(start,n) \ + __devm_release_region(dev, &iomem_resource, (start), (n)) + +extern void __devm_release_region(struct device *dev, struct resource *parent, + resource_size_t start, resource_size_t n); + #endif /* _LINUX_IOPORT_H */ diff --git a/include/linux/pci.h b/include/linux/pci.h index 805412cc6875..9e3042e7e1cc 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -167,6 +167,7 @@ struct pci_dev { unsigned int broken_parity_status:1; /* Device generates false positive parity */ unsigned int msi_enabled:1; unsigned int msix_enabled:1; + unsigned int is_managed:1; atomic_t enable_cnt; /* pci_enable_device has been called */ u32 saved_config_space[16]; /* config space saved at suspend time */ @@ -528,6 +529,14 @@ static inline int pci_write_config_dword(struct pci_dev *dev, int where, u32 val int __must_check pci_enable_device(struct pci_dev *dev); int __must_check pci_enable_device_bars(struct pci_dev *dev, int mask); +int __must_check pcim_enable_device(struct pci_dev *pdev); +void pcim_pin_device(struct pci_dev *pdev); + +static inline int pci_is_managed(struct pci_dev *pdev) +{ + return pdev->is_managed; +} + void pci_disable_device(struct pci_dev *dev); void pci_set_master(struct pci_dev *dev); #define HAVE_PCI_SET_MWI -- cgit v1.2.3 From 0529c159dbdd79794796c1b50b39442d72efbe97 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Sat, 20 Jan 2007 16:00:26 +0900 Subject: libata: implement ata_host_detach() Implement ata_host_detach() which calls ata_port_detach() for each port in the host and export it. ata_port_detach() is now internal and thus un-exported. ata_host_detach() will be used as the 'deregister from libata layer' function after devres conversion. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- include/linux/libata.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/libata.h b/include/linux/libata.h index a2458dfefb17..e9a0cfdcfe2c 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -719,7 +719,7 @@ extern int ata_pci_device_resume(struct pci_dev *pdev); extern int ata_pci_clear_simplex(struct pci_dev *pdev); #endif /* CONFIG_PCI */ extern int ata_device_add(const struct ata_probe_ent *ent); -extern void ata_port_detach(struct ata_port *ap); +extern void ata_host_detach(struct ata_host *host); extern void ata_host_init(struct ata_host *, struct device *, unsigned long, const struct ata_port_operations *); extern void ata_host_remove(struct ata_host *host); -- cgit v1.2.3 From f0d36efdc624beb3d9e29b9ab9e9537bf0f25d5b Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Sat, 20 Jan 2007 16:00:28 +0900 Subject: libata: update libata core layer to use devres Update libata core layer to use devres. * ata_device_add() acquires all resources in managed mode. * ata_host is allocated as devres associated with ata_host_release. * Port attached status is handled as devres associated with ata_host_attach_release(). * Initialization failure and host removal is handedl by releasing devres group. * Except for ata_scsi_release() removal, LLD interface remains the same. Some functions use hacky is_managed test to support both managed and unmanaged devices. These will go away once all LLDs are updated to use devres. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- include/linux/libata.h | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/libata.h b/include/linux/libata.h index e9a0cfdcfe2c..f96277ed184f 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -31,7 +31,7 @@ #include #include #include -#include +#include #include #include #include @@ -726,7 +726,6 @@ extern void ata_host_remove(struct ata_host *host); extern int ata_scsi_detect(struct scsi_host_template *sht); extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg); extern int ata_scsi_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *)); -extern int ata_scsi_release(struct Scsi_Host *host); extern void ata_sas_port_destroy(struct ata_port *); extern struct ata_port *ata_sas_port_alloc(struct ata_host *, struct ata_port_info *, struct Scsi_Host *); @@ -1227,14 +1226,14 @@ static inline unsigned int __ac_err_mask(u8 status) static inline int ata_pad_alloc(struct ata_port *ap, struct device *dev) { ap->pad_dma = 0; - ap->pad = dma_alloc_coherent(dev, ATA_DMA_PAD_BUF_SZ, - &ap->pad_dma, GFP_KERNEL); + ap->pad = dmam_alloc_coherent(dev, ATA_DMA_PAD_BUF_SZ, + &ap->pad_dma, GFP_KERNEL); return (ap->pad == NULL) ? -ENOMEM : 0; } static inline void ata_pad_free(struct ata_port *ap, struct device *dev) { - dma_free_coherent(dev, ATA_DMA_PAD_BUF_SZ, ap->pad, ap->pad_dma); + dmam_free_coherent(dev, ATA_DMA_PAD_BUF_SZ, ap->pad, ap->pad_dma); } static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host) -- cgit v1.2.3 From b878ca5d37953ad1c4578b225a13a3c3e7e743b7 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Sat, 20 Jan 2007 16:00:28 +0900 Subject: libata: remove unused functions Now that all LLDs are converted to use devres, default stop callbacks are unused. Remove them. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- include/linux/libata.h | 4 ---- 1 file changed, 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/libata.h b/include/linux/libata.h index f96277ed184f..cebbcc8d45fd 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -722,7 +722,6 @@ extern int ata_device_add(const struct ata_probe_ent *ent); extern void ata_host_detach(struct ata_host *host); extern void ata_host_init(struct ata_host *, struct device *, unsigned long, const struct ata_port_operations *); -extern void ata_host_remove(struct ata_host *host); extern int ata_scsi_detect(struct scsi_host_template *sht); extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg); extern int ata_scsi_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *)); @@ -768,8 +767,6 @@ extern u8 ata_check_status(struct ata_port *ap); extern u8 ata_altstatus(struct ata_port *ap); extern void ata_exec_command(struct ata_port *ap, const struct ata_taskfile *tf); extern int ata_port_start (struct ata_port *ap); -extern void ata_port_stop (struct ata_port *ap); -extern void ata_host_stop (struct ata_host *host); extern irqreturn_t ata_interrupt (int irq, void *dev_instance); extern void ata_mmio_data_xfer(struct ata_device *adev, unsigned char *buf, unsigned int buflen, int write_data); @@ -856,7 +853,6 @@ struct pci_bits { unsigned long val; }; -extern void ata_pci_host_stop (struct ata_host *host); extern struct ata_probe_ent * ata_pci_init_native_mode(struct pci_dev *pdev, struct ata_port_info **port, int portmask); extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits); -- cgit v1.2.3 From d24bbbf251e70bf984cbaa9b1fcadc5f56fc3ae9 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Sat, 20 Jan 2007 16:00:28 +0900 Subject: devres: implement pcim_iomap_regions() Implement pcim_iomap_regions(). This function takes mask of BARs to request and iomap. No BAR should have length of zero. BARs are iomapped using pcim_iomap_table(). Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- include/linux/io.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/io.h b/include/linux/io.h index f5edf9c5de0a..45a9c944cb0a 100644 --- a/include/linux/io.h +++ b/include/linux/io.h @@ -45,6 +45,8 @@ void __iomem * pcim_iomap(struct pci_dev *pdev, int bar, unsigned long maxlen); void pcim_iounmap(struct pci_dev *pdev, void __iomem *addr); void __iomem * const * pcim_iomap_table(struct pci_dev *pdev); +int pcim_iomap_regions(struct pci_dev *pdev, u16 mask, const char *name); + /** * check_signature - find BIOS signatures * @io_addr: mmio address to check -- cgit v1.2.3 From 0d5ff566779f894ca9937231a181eb31e4adff0e Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Thu, 1 Feb 2007 15:06:36 +0900 Subject: libata: convert to iomap Convert libata core layer and LLDs to use iomap. * managed iomap is used. Pointer to pcim_iomap_table() is cached at host->iomap and used through out LLDs. This basically replaces host->mmio_base. * if possible, pcim_iomap_regions() is used Most iomap operation conversions are taken from Jeff Garzik 's iomap branch. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- include/linux/libata.h | 68 +++++++++++++++++++++----------------------------- 1 file changed, 28 insertions(+), 40 deletions(-) (limited to 'include/linux') diff --git a/include/linux/libata.h b/include/linux/libata.h index cebbcc8d45fd..308bb8cbe50f 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -348,21 +348,21 @@ typedef int (*ata_reset_fn_t)(struct ata_port *ap, unsigned int *classes); typedef void (*ata_postreset_fn_t)(struct ata_port *ap, unsigned int *classes); struct ata_ioports { - unsigned long cmd_addr; - unsigned long data_addr; - unsigned long error_addr; - unsigned long feature_addr; - unsigned long nsect_addr; - unsigned long lbal_addr; - unsigned long lbam_addr; - unsigned long lbah_addr; - unsigned long device_addr; - unsigned long status_addr; - unsigned long command_addr; - unsigned long altstatus_addr; - unsigned long ctl_addr; - unsigned long bmdma_addr; - unsigned long scr_addr; + void __iomem *cmd_addr; + void __iomem *data_addr; + void __iomem *error_addr; + void __iomem *feature_addr; + void __iomem *nsect_addr; + void __iomem *lbal_addr; + void __iomem *lbam_addr; + void __iomem *lbah_addr; + void __iomem *device_addr; + void __iomem *status_addr; + void __iomem *command_addr; + void __iomem *altstatus_addr; + void __iomem *ctl_addr; + void __iomem *bmdma_addr; + void __iomem *scr_addr; }; struct ata_probe_ent { @@ -381,7 +381,7 @@ struct ata_probe_ent { unsigned int irq_flags; unsigned long port_flags; unsigned long _host_flags; - void __iomem *mmio_base; + void __iomem * const *iomap; void *private_data; /* port_info for the secondary port. Together with irq2, it's @@ -398,7 +398,7 @@ struct ata_host { struct device *dev; unsigned long irq; unsigned long irq2; - void __iomem *mmio_base; + void __iomem * const *iomap; unsigned int n_ports; void *private_data; const struct ata_port_operations *ops; @@ -768,12 +768,10 @@ extern u8 ata_altstatus(struct ata_port *ap); extern void ata_exec_command(struct ata_port *ap, const struct ata_taskfile *tf); extern int ata_port_start (struct ata_port *ap); extern irqreturn_t ata_interrupt (int irq, void *dev_instance); -extern void ata_mmio_data_xfer(struct ata_device *adev, unsigned char *buf, - unsigned int buflen, int write_data); -extern void ata_pio_data_xfer(struct ata_device *adev, unsigned char *buf, - unsigned int buflen, int write_data); -extern void ata_pio_data_xfer_noirq(struct ata_device *adev, unsigned char *buf, - unsigned int buflen, int write_data); +extern void ata_data_xfer(struct ata_device *adev, unsigned char *buf, + unsigned int buflen, int write_data); +extern void ata_data_xfer_noirq(struct ata_device *adev, unsigned char *buf, + unsigned int buflen, int write_data); extern void ata_qc_prep(struct ata_queued_cmd *qc); extern void ata_noop_qc_prep(struct ata_queued_cmd *qc); extern unsigned int ata_qc_issue_prot(struct ata_queued_cmd *qc); @@ -1084,10 +1082,9 @@ static inline u8 ata_wait_idle(struct ata_port *ap) u8 status = ata_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000); if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ))) { - unsigned long l = ap->ioaddr.status_addr; if (ata_msg_warn(ap)) - printk(KERN_WARNING "ATA: abnormal status 0x%X on port 0x%lX\n", - status, l); + printk(KERN_WARNING "ATA: abnormal status 0x%X on port 0x%p\n", + status, ap->ioaddr.status_addr); } return status; @@ -1172,20 +1169,11 @@ static inline u8 ata_irq_ack(struct ata_port *ap, unsigned int chk_drq) printk(KERN_ERR "abnormal status 0x%X\n", status); /* get controller status; clear intr, err bits */ - if (ap->flags & ATA_FLAG_MMIO) { - void __iomem *mmio = (void __iomem *) ap->ioaddr.bmdma_addr; - host_stat = readb(mmio + ATA_DMA_STATUS); - writeb(host_stat | ATA_DMA_INTR | ATA_DMA_ERR, - mmio + ATA_DMA_STATUS); - - post_stat = readb(mmio + ATA_DMA_STATUS); - } else { - host_stat = inb(ap->ioaddr.bmdma_addr + ATA_DMA_STATUS); - outb(host_stat | ATA_DMA_INTR | ATA_DMA_ERR, - ap->ioaddr.bmdma_addr + ATA_DMA_STATUS); - - post_stat = inb(ap->ioaddr.bmdma_addr + ATA_DMA_STATUS); - } + host_stat = ioread8(ap->ioaddr.bmdma_addr + ATA_DMA_STATUS); + iowrite8(host_stat | ATA_DMA_INTR | ATA_DMA_ERR, + ap->ioaddr.bmdma_addr + ATA_DMA_STATUS); + + post_stat = ioread8(ap->ioaddr.bmdma_addr + ATA_DMA_STATUS); if (ata_msg_intr(ap)) printk(KERN_INFO "%s: irq ack: host_stat 0x%X, new host_stat 0x%X, drv_stat 0x%X\n", -- cgit v1.2.3 From 7f25377043925554cb9f3f9d8ada3390f71a5d10 Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Fri, 2 Feb 2007 18:07:15 -0800 Subject: git-libata-all: forward declare struct device In file included from drivers/infiniband/hw/ipath/ipath_diag.c:44: include/linux/io.h:35: warning: 'struct device' declared inside parameter list include/linux/io.h:35: warning: its scope is only this definition or declaration Cc: Jeff Garzik Signed-off-by: Andrew Morton Signed-off-by: Jeff Garzik --- include/linux/io.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/io.h b/include/linux/io.h index 45a9c944cb0a..9e419ebfc98b 100644 --- a/include/linux/io.h +++ b/include/linux/io.h @@ -22,6 +22,8 @@ #include #include +struct device; + void __iowrite32_copy(void __iomem *to, const void *from, size_t count); void __iowrite64_copy(void __iomem *to, const void *from, size_t count); -- cgit v1.2.3 From 836250069fc0eeebe8b6aed772281535cc6e34f9 Mon Sep 17 00:00:00 2001 From: Akira Iguchi Date: Fri, 26 Jan 2007 16:27:32 +0900 Subject: libata: add another IRQ calls (core and headers) This patch is against the libata core and headers. Two IRQ calls are added in ata_port_operations. - irq_on() is used to enable interrupts. - irq_ack() is used to acknowledge a device interrupt. In most drivers, ata_irq_on() and ata_irq_ack() are used for irq_on and irq_ack respectively. In some drivers (ex: ahci, sata_sil24) which cannot use them as is, ata_dummy_irq_on() and ata_dummy_irq_ack() are used. Signed-off-by: Kou Ishizaki Signed-off-by: Akira Iguchi Signed-off-by: Jeff Garzik --- include/linux/libata.h | 42 ++++++------------------------------------ 1 file changed, 6 insertions(+), 36 deletions(-) (limited to 'include/linux') diff --git a/include/linux/libata.h b/include/linux/libata.h index 308bb8cbe50f..bdfe6ea8edf7 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -632,6 +632,8 @@ struct ata_port_operations { irq_handler_t irq_handler; void (*irq_clear) (struct ata_port *); + u8 (*irq_on) (struct ata_port *); + u8 (*irq_ack) (struct ata_port *ap, unsigned int chk_drq); u32 (*scr_read) (struct ata_port *ap, unsigned int sc_reg); void (*scr_write) (struct ata_port *ap, unsigned int sc_reg, @@ -813,6 +815,10 @@ extern void ata_scsi_slave_destroy(struct scsi_device *sdev); extern int ata_scsi_change_queue_depth(struct scsi_device *sdev, int queue_depth); extern struct ata_device *ata_dev_pair(struct ata_device *adev); +extern u8 ata_irq_on(struct ata_port *ap); +extern u8 ata_dummy_irq_on(struct ata_port *ap); +extern u8 ata_irq_ack(struct ata_port *ap, unsigned int chk_drq); +extern u8 ata_dummy_irq_ack(struct ata_port *ap, unsigned int chk_drq); /* * Timing helpers @@ -1147,42 +1153,6 @@ static inline void ata_qc_reinit(struct ata_queued_cmd *qc) qc->result_tf.feature = 0; } -/** - * ata_irq_ack - Acknowledge a device interrupt. - * @ap: Port on which interrupts are enabled. - * - * Wait up to 10 ms for legacy IDE device to become idle (BUSY - * or BUSY+DRQ clear). Obtain dma status and port status from - * device. Clear the interrupt. Return port status. - * - * LOCKING: - */ - -static inline u8 ata_irq_ack(struct ata_port *ap, unsigned int chk_drq) -{ - unsigned int bits = chk_drq ? ATA_BUSY | ATA_DRQ : ATA_BUSY; - u8 host_stat, post_stat, status; - - status = ata_busy_wait(ap, bits, 1000); - if (status & bits) - if (ata_msg_err(ap)) - printk(KERN_ERR "abnormal status 0x%X\n", status); - - /* get controller status; clear intr, err bits */ - host_stat = ioread8(ap->ioaddr.bmdma_addr + ATA_DMA_STATUS); - iowrite8(host_stat | ATA_DMA_INTR | ATA_DMA_ERR, - ap->ioaddr.bmdma_addr + ATA_DMA_STATUS); - - post_stat = ioread8(ap->ioaddr.bmdma_addr + ATA_DMA_STATUS); - - if (ata_msg_intr(ap)) - printk(KERN_INFO "%s: irq ack: host_stat 0x%X, new host_stat 0x%X, drv_stat 0x%X\n", - __FUNCTION__, - host_stat, post_stat, status); - - return status; -} - static inline int ata_try_flush_cache(const struct ata_device *dev) { return ata_id_wcache_enabled(dev->id) || -- cgit v1.2.3 From 49554c19569c91d0943b67ca731c9abfc857883f Mon Sep 17 00:00:00 2001 From: Alan Date: Mon, 5 Feb 2007 16:17:19 +0000 Subject: ata: Add defines for the iordy bits IORDY and IORDY enable/disable flags. Signed-off-by: Alan Cox Signed-off-by: Jeff Garzik --- include/linux/ata.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ata.h b/include/linux/ata.h index 3a50739e25a6..18e401ff7eaf 100644 --- a/include/linux/ata.h +++ b/include/linux/ata.h @@ -299,6 +299,8 @@ struct ata_taskfile { #define ata_id_queue_depth(id) (((id)[75] & 0x1f) + 1) #define ata_id_removeable(id) ((id)[0] & (1 << 7)) #define ata_id_has_dword_io(id) ((id)[50] & (1 << 0)) +#define ata_id_iordy_disable(id) ((id)[49] & (1 << 10)) +#define ata_id_has_iordy(id) ((id)[49] & (1 << 9)) #define ata_id_u32(id,n) \ (((u32) (id)[(n) + 1] << 16) | ((u32) (id)[(n)])) #define ata_id_u64(id,n) \ -- cgit v1.2.3 From 66efc5a7e3061c3597ac43a8bb1026488d57e66b Mon Sep 17 00:00:00 2001 From: Jeff Garzik Date: Tue, 6 Feb 2007 22:19:10 -0500 Subject: libata: kill ATA_ENABLE_PATA The ATA_ENABLE_PATA define was never meant to be permanent, and in recent kernels, it's already been unconditionally enabled. Remove. 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 bdfe6ea8edf7..596e0c18887d 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -54,8 +54,6 @@ #undef ATA_VERBOSE_DEBUG /* yet more debugging output */ #undef ATA_IRQ_TRAP /* define to ack screaming irqs */ #undef ATA_NDEBUG /* define to disable quick runtime checks */ -#define ATA_ENABLE_PATA /* define to enable PATA support in some - * low-level drivers */ /* note: prints function name for you */ -- cgit v1.2.3 From d18d7682c18b617f523df6beea5ea0bd396ed0bd Mon Sep 17 00:00:00 2001 From: Fabio Massimo Di Nitto Date: Sat, 10 Feb 2007 23:50:00 -0800 Subject: [PARTITION]: Add whole_disk attribute. Some partitioning systems create special partitions that span the entire disk. One example are Sun partitions, and this whole-disk partition exists to tell the firmware the extent of the entire device so it can load the boot block and do other things. Such partitions should not be treated as normal partitions, because all the other partitions overlap this whole-disk one. So we'd see multiple instances of the same UUID etc. which we do not want. udev and friends can thus search for this 'whole_disk' attribute and use it to decide to ignore the partition. Signed-off-by: Fabio Massimo Di Nitto Signed-off-by: David S. Miller --- include/linux/genhd.h | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/genhd.h b/include/linux/genhd.h index 0a022b2f63fc..247734f7881f 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -20,6 +20,8 @@ enum { LINUX_EXTENDED_PARTITION = 0x85, WIN98_EXTENDED_PARTITION = 0x0f, + SUN_WHOLE_DISK = DOS_EXTENDED_PARTITION, + LINUX_SWAP_PARTITION = 0x82, LINUX_RAID_PARTITION = 0xfd, /* autodetect RAID partition */ @@ -400,10 +402,14 @@ struct unixware_disklabel { #ifdef __KERNEL__ +#define ADDPART_FLAG_NONE 0 +#define ADDPART_FLAG_RAID 1 +#define ADDPART_FLAG_WHOLEDISK 2 + char *disk_name (struct gendisk *hd, int part, char *buf); extern int rescan_partitions(struct gendisk *disk, struct block_device *bdev); -extern void add_partition(struct gendisk *, int, sector_t, sector_t); +extern void add_partition(struct gendisk *, int, sector_t, sector_t, int); extern void delete_partition(struct gendisk *, int); extern struct gendisk *alloc_disk_node(int minors, int node_id); -- cgit v1.2.3 From c878538598d1e7ab41ecc0de8894e34e2fdef630 Mon Sep 17 00:00:00 2001 From: Christoph Lameter Date: Sat, 10 Feb 2007 01:43:01 -0800 Subject: [PATCH] Use ZVC for inactive and active counts The determination of the dirty ratio to determine writeback behavior is currently based on the number of total pages on the system. However, not all pages in the system may be dirtied. Thus the ratio is always too low and can never reach 100%. The ratio may be particularly skewed if large hugepage allocations, slab allocations or device driver buffers make large sections of memory not available anymore. In that case we may get into a situation in which f.e. the background writeback ratio of 40% cannot be reached anymore which leads to undesired writeback behavior. This patchset fixes that issue by determining the ratio based on the actual pages that may potentially be dirty. These are the pages on the active and the inactive list plus free pages. The problem with those counts has so far been that it is expensive to calculate these because counts from multiple nodes and multiple zones will have to be summed up. This patchset makes these counters ZVC counters. This means that a current sum per zone, per node and for the whole system is always available via global variables and not expensive anymore to calculate. The patchset results in some other good side effects: - Removal of the various functions that sum up free, active and inactive page counts - Cleanup of the functions that display information via the proc filesystem. This patch: The use of a ZVC for nr_inactive and nr_active allows a simplification of some counter operations. More ZVC functionality is used for sums etc in the following patches. [akpm@osdl.org: UP build fix] Signed-off-by: Christoph Lameter Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm_inline.h | 13 ++++++------- include/linux/mmzone.h | 4 ++-- include/linux/vmstat.h | 9 +++++++++ 3 files changed, 17 insertions(+), 9 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mm_inline.h b/include/linux/mm_inline.h index 3b6723dfaff3..895bc4e93039 100644 --- a/include/linux/mm_inline.h +++ b/include/linux/mm_inline.h @@ -1,30 +1,29 @@ - static inline void add_page_to_active_list(struct zone *zone, struct page *page) { list_add(&page->lru, &zone->active_list); - zone->nr_active++; + __inc_zone_state(zone, NR_ACTIVE); } static inline void add_page_to_inactive_list(struct zone *zone, struct page *page) { list_add(&page->lru, &zone->inactive_list); - zone->nr_inactive++; + __inc_zone_state(zone, NR_INACTIVE); } static inline void del_page_from_active_list(struct zone *zone, struct page *page) { list_del(&page->lru); - zone->nr_active--; + __dec_zone_state(zone, NR_ACTIVE); } static inline void del_page_from_inactive_list(struct zone *zone, struct page *page) { list_del(&page->lru); - zone->nr_inactive--; + __dec_zone_state(zone, NR_INACTIVE); } static inline void @@ -33,9 +32,9 @@ del_page_from_lru(struct zone *zone, struct page *page) list_del(&page->lru); if (PageActive(page)) { __ClearPageActive(page); - zone->nr_active--; + __dec_zone_state(zone, NR_ACTIVE); } else { - zone->nr_inactive--; + __dec_zone_state(zone, NR_INACTIVE); } } diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index b262f47961fb..9137d1b9735c 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -47,6 +47,8 @@ struct zone_padding { #endif enum zone_stat_item { + NR_INACTIVE, + NR_ACTIVE, NR_ANON_PAGES, /* Mapped anonymous pages */ NR_FILE_MAPPED, /* pagecache pages mapped into pagetables. only modified from process context */ @@ -197,8 +199,6 @@ struct zone { struct list_head inactive_list; unsigned long nr_scan_active; unsigned long nr_scan_inactive; - unsigned long nr_active; - unsigned long nr_inactive; unsigned long pages_scanned; /* since last reclaim */ int all_unreclaimable; /* All pages pinned */ diff --git a/include/linux/vmstat.h b/include/linux/vmstat.h index 5e9803ed17fc..c8d55bcc09b9 100644 --- a/include/linux/vmstat.h +++ b/include/linux/vmstat.h @@ -186,6 +186,9 @@ void inc_zone_page_state(struct page *, enum zone_stat_item); void dec_zone_page_state(struct page *, enum zone_stat_item); extern void inc_zone_state(struct zone *, enum zone_stat_item); +extern void __inc_zone_state(struct zone *, enum zone_stat_item); +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 refresh_vm_stats(void); @@ -214,6 +217,12 @@ static inline void __inc_zone_page_state(struct page *page, __inc_zone_state(page_zone(page), item); } +static inline void __dec_zone_state(struct zone *zone, enum zone_stat_item item) +{ + atomic_long_dec(&zone->vm_stat[item]); + atomic_long_dec(&vm_stat[item]); +} + static inline void __dec_zone_page_state(struct page *page, enum zone_stat_item item) { -- cgit v1.2.3 From d23ad42324cc4378132e51f2fc5c9ba6cbe75182 Mon Sep 17 00:00:00 2001 From: Christoph Lameter Date: Sat, 10 Feb 2007 01:43:02 -0800 Subject: [PATCH] Use ZVC for free_pages This is again simplifies some of the VM counter calculations through the use of the ZVC consolidated counters. [michal.k.k.piotrowski@gmail.com: build fix] Signed-off-by: Christoph Lameter Signed-off-by: Michal Piotrowski Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- 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 9137d1b9735c..824279c7884d 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -47,6 +47,7 @@ struct zone_padding { #endif enum zone_stat_item { + NR_FREE_PAGES, NR_INACTIVE, NR_ACTIVE, NR_ANON_PAGES, /* Mapped anonymous pages */ @@ -157,7 +158,6 @@ enum zone_type { struct zone { /* Fields commonly accessed by the page allocator */ - unsigned long free_pages; unsigned long pages_min, pages_low, pages_high; /* * We don't know if the memory that we're going to allocate will be freeable -- cgit v1.2.3 From 51ed4491271be8c56bdb2a03481ed34ea4984bc2 Mon Sep 17 00:00:00 2001 From: Christoph Lameter Date: Sat, 10 Feb 2007 01:43:02 -0800 Subject: [PATCH] Reorder ZVCs according to cacheline The global and per zone counter sums are in arrays of longs. Reorder the ZVCs so that the most frequently used ZVCs are put into the same cacheline. That way calculations of the global, node and per zone vm state touches only a single cacheline. This is mostly important for 64 bit systems were one 128 byte cacheline takes only 8 longs. Signed-off-by: Christoph Lameter Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mmzone.h | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 824279c7884d..d15b1f68aef9 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -47,6 +47,7 @@ struct zone_padding { #endif enum zone_stat_item { + /* First 128 byte cacheline (assuming 64 bit words) */ NR_FREE_PAGES, NR_INACTIVE, NR_ACTIVE, @@ -54,11 +55,12 @@ enum zone_stat_item { NR_FILE_MAPPED, /* pagecache pages mapped into pagetables. only modified from process context */ NR_FILE_PAGES, - NR_SLAB_RECLAIMABLE, - NR_SLAB_UNRECLAIMABLE, - NR_PAGETABLE, /* used for pagetables */ NR_FILE_DIRTY, NR_WRITEBACK, + /* Second 128 byte cacheline */ + NR_SLAB_RECLAIMABLE, + NR_SLAB_UNRECLAIMABLE, + NR_PAGETABLE, /* used for pagetables */ NR_UNSTABLE_NFS, /* NFS unstable pages */ NR_BOUNCE, NR_VMSCAN_WRITE, -- cgit v1.2.3 From 96177299416dbccb73b54e6b344260154a445375 Mon Sep 17 00:00:00 2001 From: Christoph Lameter Date: Sat, 10 Feb 2007 01:43:03 -0800 Subject: [PATCH] Drop free_pages() nr_free_pages is now a simple access to a global variable. Make it a macro instead of a function. The nr_free_pages now requires vmstat.h to be included. There is one occurrence in power management where we need to add the include. Directly refrer to global_page_state() there to clarify why the #include was added. [akpm@osdl.org: arm build fix] [akpm@osdl.org: sparc64 build fix] Signed-off-by: Christoph Lameter Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/swap.h | 5 ++++- include/linux/vmstat.h | 1 + 2 files changed, 5 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/swap.h b/include/linux/swap.h index 5423559a44a6..817e1b47007f 100644 --- a/include/linux/swap.h +++ b/include/linux/swap.h @@ -170,11 +170,14 @@ extern void swapin_readahead(swp_entry_t, unsigned long, struct vm_area_struct * extern unsigned long totalram_pages; extern unsigned long totalreserve_pages; extern long nr_swap_pages; -extern unsigned int nr_free_pages(void); extern unsigned int nr_free_pages_pgdat(pg_data_t *pgdat); extern unsigned int nr_free_buffer_pages(void); extern unsigned int nr_free_pagecache_pages(void); +/* Definition of global_page_state not available yet */ +#define nr_free_pages() global_page_state(NR_FREE_PAGES) + + /* linux/mm/swap.c */ extern void FASTCALL(lru_cache_add(struct page *)); extern void FASTCALL(lru_cache_add_active(struct page *)); diff --git a/include/linux/vmstat.h b/include/linux/vmstat.h index c8d55bcc09b9..77caf911969c 100644 --- a/include/linux/vmstat.h +++ b/include/linux/vmstat.h @@ -3,6 +3,7 @@ #include #include +#include #include #include -- cgit v1.2.3 From 9195481d2f869a2707a272057f3f8664fd277534 Mon Sep 17 00:00:00 2001 From: Christoph Lameter Date: Sat, 10 Feb 2007 01:43:04 -0800 Subject: [PATCH] Drop nr_free_pages_pgdat() Function is unnecessary now. We can use the summing features of the ZVCs to get the values we need. Signed-off-by: Christoph Lameter Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/swap.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/swap.h b/include/linux/swap.h index 817e1b47007f..006868881346 100644 --- a/include/linux/swap.h +++ b/include/linux/swap.h @@ -170,7 +170,6 @@ extern void swapin_readahead(swp_entry_t, unsigned long, struct vm_area_struct * extern unsigned long totalram_pages; extern unsigned long totalreserve_pages; extern long nr_swap_pages; -extern unsigned int nr_free_pages_pgdat(pg_data_t *pgdat); extern unsigned int nr_free_buffer_pages(void); extern unsigned int nr_free_pagecache_pages(void); -- cgit v1.2.3 From 05a0416be2b88d859efcbc4a4290555a04d169a1 Mon Sep 17 00:00:00 2001 From: Christoph Lameter Date: Sat, 10 Feb 2007 01:43:05 -0800 Subject: [PATCH] Drop __get_zone_counts() Values are readily available via ZVC per node and global sums. Signed-off-by: Christoph Lameter Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mmzone.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index d15b1f68aef9..398f2ec55f54 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -444,8 +444,6 @@ typedef struct pglist_data { #include -void __get_zone_counts(unsigned long *active, unsigned long *inactive, - unsigned long *free, struct pglist_data *pgdat); void get_zone_counts(unsigned long *active, unsigned long *inactive, unsigned long *free); void build_all_zonelists(void); -- cgit v1.2.3 From 4b51d66989218aad731a721b5b28c79bf5388c09 Mon Sep 17 00:00:00 2001 From: Christoph Lameter Date: Sat, 10 Feb 2007 01:43:10 -0800 Subject: [PATCH] optional ZONE_DMA: optional ZONE_DMA in the VM Make ZONE_DMA optional in core code. - ifdef all code for ZONE_DMA and related definitions following the example for ZONE_DMA32 and ZONE_HIGHMEM. - Without ZONE_DMA, ZONE_HIGHMEM and ZONE_DMA32 we get to a ZONES_SHIFT of 0. - Modify the VM statistics to work correctly without a DMA zone. - Modify slab to not create DMA slabs if there is no ZONE_DMA. [akpm@osdl.org: cleanup] [jdike@addtoit.com: build fix] [apw@shadowen.org: Simplify calculation of the number of bits we need for ZONES_SHIFT] Signed-off-by: Christoph Lameter Cc: Andi Kleen Cc: "Luck, Tony" Cc: Kyle McMartin Cc: Matthew Wilcox Cc: James Bottomley Cc: Paul Mundt Signed-off-by: Andy Whitcroft Signed-off-by: Jeff Dike Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/gfp.h | 2 ++ include/linux/mmzone.h | 26 ++++++++++++++++++++++++-- include/linux/slab_def.h | 30 +++++++++++++++++++++--------- include/linux/vmstat.h | 17 +++++++++++++---- 4 files changed, 60 insertions(+), 15 deletions(-) (limited to 'include/linux') diff --git a/include/linux/gfp.h b/include/linux/gfp.h index 063799ea6be0..2a7d15bcde46 100644 --- a/include/linux/gfp.h +++ b/include/linux/gfp.h @@ -85,8 +85,10 @@ struct vm_area_struct; static inline enum zone_type gfp_zone(gfp_t flags) { +#ifdef CONFIG_ZONE_DMA if (flags & __GFP_DMA) return ZONE_DMA; +#endif #ifdef CONFIG_ZONE_DMA32 if (flags & __GFP_DMA32) return ZONE_DMA32; diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 398f2ec55f54..ee9e3143df4f 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -96,6 +96,7 @@ struct per_cpu_pageset { #endif enum zone_type { +#ifdef CONFIG_ZONE_DMA /* * ZONE_DMA is used when there are devices that are not able * to do DMA to all of addressable memory (ZONE_NORMAL). Then we @@ -116,6 +117,7 @@ enum zone_type { * <16M. */ ZONE_DMA, +#endif #ifdef CONFIG_ZONE_DMA32 /* * x86_64 needs two ZONE_DMAs because it supports devices that are @@ -152,11 +154,27 @@ enum zone_type { * match the requested limits. See gfp_zone() in include/linux/gfp.h */ -#if !defined(CONFIG_ZONE_DMA32) && !defined(CONFIG_HIGHMEM) +/* + * Count the active zones. Note that the use of defined(X) outside + * #if and family is not necessarily defined so ensure we cannot use + * it later. Use __ZONE_COUNT to work out how many shift bits we need. + */ +#define __ZONE_COUNT ( \ + defined(CONFIG_ZONE_DMA) \ + + defined(CONFIG_ZONE_DMA32) \ + + 1 \ + + defined(CONFIG_HIGHMEM) \ +) +#if __ZONE_COUNT < 2 +#define ZONES_SHIFT 0 +#elif __ZONE_COUNT <= 2 #define ZONES_SHIFT 1 -#else +#elif __ZONE_COUNT <= 4 #define ZONES_SHIFT 2 +#else +#error ZONES_SHIFT -- too many zones configured adjust calculation #endif +#undef __ZONE_COUNT struct zone { /* Fields commonly accessed by the page allocator */ @@ -523,7 +541,11 @@ static inline int is_dma32(struct zone *zone) static inline int is_dma(struct zone *zone) { +#ifdef CONFIG_ZONE_DMA return zone == zone->zone_pgdat->node_zones + ZONE_DMA; +#else + return 0; +#endif } /* These two functions are used to setup the per zone pages min values */ diff --git a/include/linux/slab_def.h b/include/linux/slab_def.h index 4b463e66ddea..5e4364644ed1 100644 --- a/include/linux/slab_def.h +++ b/include/linux/slab_def.h @@ -19,7 +19,9 @@ struct cache_sizes { size_t cs_size; struct kmem_cache *cs_cachep; +#ifdef CONFIG_ZONE_DMA struct kmem_cache *cs_dmacachep; +#endif }; extern struct cache_sizes malloc_sizes[]; @@ -39,9 +41,12 @@ static inline void *kmalloc(size_t size, gfp_t flags) __you_cannot_kmalloc_that_much(); } found: - return kmem_cache_alloc((flags & GFP_DMA) ? - malloc_sizes[i].cs_dmacachep : - malloc_sizes[i].cs_cachep, flags); +#ifdef CONFIG_ZONE_DMA + if (flags & GFP_DMA) + return kmem_cache_alloc(malloc_sizes[i].cs_dmacachep, + flags); +#endif + return kmem_cache_alloc(malloc_sizes[i].cs_cachep, flags); } return __kmalloc(size, flags); } @@ -62,9 +67,12 @@ static inline void *kzalloc(size_t size, gfp_t flags) __you_cannot_kzalloc_that_much(); } found: - return kmem_cache_zalloc((flags & GFP_DMA) ? - malloc_sizes[i].cs_dmacachep : - malloc_sizes[i].cs_cachep, flags); +#ifdef CONFIG_ZONE_DMA + if (flags & GFP_DMA) + return kmem_cache_zalloc(malloc_sizes[i].cs_dmacachep, + flags); +#endif + return kmem_cache_zalloc(malloc_sizes[i].cs_cachep, flags); } return __kzalloc(size, flags); } @@ -88,9 +96,13 @@ static inline void *kmalloc_node(size_t size, gfp_t flags, int node) __you_cannot_kmalloc_that_much(); } found: - return kmem_cache_alloc_node((flags & GFP_DMA) ? - malloc_sizes[i].cs_dmacachep : - malloc_sizes[i].cs_cachep, flags, node); +#ifdef CONFIG_ZONE_DMA + if (flags & GFP_DMA) + return kmem_cache_alloc_node(malloc_sizes[i].cs_dmacachep, + flags, node); +#endif + return kmem_cache_alloc_node(malloc_sizes[i].cs_cachep, + flags, node); } return __kmalloc_node(size, flags, node); } diff --git a/include/linux/vmstat.h b/include/linux/vmstat.h index 77caf911969c..7ba91f2839fa 100644 --- a/include/linux/vmstat.h +++ b/include/linux/vmstat.h @@ -19,6 +19,12 @@ * generated will simply be the increment of a global address. */ +#ifdef CONFIG_ZONE_DMA +#define DMA_ZONE(xx) xx##_DMA, +#else +#define DMA_ZONE(xx) +#endif + #ifdef CONFIG_ZONE_DMA32 #define DMA32_ZONE(xx) xx##_DMA32, #else @@ -31,7 +37,7 @@ #define HIGHMEM_ZONE(xx) #endif -#define FOR_ALL_ZONES(xx) xx##_DMA, DMA32_ZONE(xx) xx##_NORMAL HIGHMEM_ZONE(xx) +#define FOR_ALL_ZONES(xx) DMA_ZONE(xx) DMA32_ZONE(xx) xx##_NORMAL HIGHMEM_ZONE(xx) enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT, FOR_ALL_ZONES(PGALLOC), @@ -96,7 +102,8 @@ static inline void vm_events_fold_cpu(int cpu) #endif /* CONFIG_VM_EVENT_COUNTERS */ #define __count_zone_vm_events(item, zone, delta) \ - __count_vm_events(item##_DMA + zone_idx(zone), delta) + __count_vm_events(item##_NORMAL - ZONE_NORMAL + \ + zone_idx(zone), delta) /* * Zone based page accounting with per cpu differentials. @@ -143,14 +150,16 @@ static inline unsigned long node_page_state(int node, struct zone *zones = NODE_DATA(node)->node_zones; return +#ifdef CONFIG_ZONE_DMA + zone_page_state(&zones[ZONE_DMA], item) + +#endif #ifdef CONFIG_ZONE_DMA32 zone_page_state(&zones[ZONE_DMA32], item) + #endif - zone_page_state(&zones[ZONE_NORMAL], item) + #ifdef CONFIG_HIGHMEM zone_page_state(&zones[ZONE_HIGHMEM], item) + #endif - zone_page_state(&zones[ZONE_DMA], item); + zone_page_state(&zones[ZONE_NORMAL], item); } extern void zone_statistics(struct zonelist *, struct zone *); -- cgit v1.2.3 From bd8029b66069d29fd02c304599411ca9bb7fa38c Mon Sep 17 00:00:00 2001 From: Andy Whitcroft Date: Sat, 10 Feb 2007 01:43:14 -0800 Subject: [PATCH] zoneid: fix up calculations for ZONEID_PGSHIFT Currently if we have a non-zero ZONES_SHIFT we assume we are able to rely on that as the bottom edge of the ZONEID, if not then we use the NODES_PGOFF as the right end of either NODES _or_ SECTION. This latter is more luck than judgement and would be incorrect if we reordered the SECTION,NODE,ZONE options in the fields space. Really what we want is the lower of the right hand end of the two fields we are using (either NODE,ZONE or SECTION,ZONE). Codify that explicitly. As always allow for there being no bits in either of the fields, such as might be valid in a non-numa machine with only a zone NORMAL. I have checked that the compiler is still able to constant fold all of this away correctly. Signed-off-by: Andy Whitcroft Acked-by: Christoph Lameter Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm.h | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index bb793a4c8e9e..26adfcc0d61a 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -437,15 +437,15 @@ static inline compound_page_dtor *get_compound_page_dtor(struct page *page) /* NODE:ZONE or SECTION:ZONE is used to ID a zone for the buddy allcator */ #ifdef NODE_NOT_IN_PAGEFLAGS #define ZONEID_SHIFT (SECTIONS_SHIFT + ZONES_SHIFT) +#define ZONEID_PGOFF ((SECTIONS_PGOFF < ZONES_PGOFF)? \ + SECTIONS_PGOFF : ZONES_PGOFF) #else #define ZONEID_SHIFT (NODES_SHIFT + ZONES_SHIFT) +#define ZONEID_PGOFF ((NODES_PGOFF < ZONES_PGOFF)? \ + NODES_PGOFF : ZONES_PGOFF) #endif -#if ZONES_WIDTH > 0 -#define ZONEID_PGSHIFT ZONES_PGSHIFT -#else -#define ZONEID_PGSHIFT NODES_PGOFF -#endif +#define ZONEID_PGSHIFT (ZONEID_PGOFF * (ZONEID_SHIFT != 0)) #if SECTIONS_WIDTH+NODES_WIDTH+ZONES_WIDTH > FLAGS_RESERVED #error SECTIONS_WIDTH+NODES_WIDTH+ZONES_WIDTH > FLAGS_RESERVED @@ -471,7 +471,6 @@ static inline enum zone_type page_zonenum(struct page *page) */ static inline int page_zone_id(struct page *page) { - BUILD_BUG_ON(ZONEID_PGSHIFT == 0 && ZONEID_MASK); return (page->flags >> ZONEID_PGSHIFT) & ZONEID_MASK; } -- cgit v1.2.3 From 767193253bbac889e176f90b6f17b7015f986551 Mon Sep 17 00:00:00 2001 From: Ken Chen Date: Sat, 10 Feb 2007 01:43:15 -0800 Subject: [PATCH] simplify shmem_aops.set_page_dirty() method shmem backed file does not have page writeback, nor it participates in backing device's dirty or writeback accounting. So using generic __set_page_dirty_nobuffers() for its .set_page_dirty aops method is a bit overkill. It unnecessarily prolongs shm unmap latency. For example, on a densely populated large shm segment (sevearl GBs), the unmapping operation becomes painfully long. Because at unmap, kernel transfers dirty bit in PTE into page struct and to the radix tree tag. The operation of tagging the radix tree is particularly expensive because it has to traverse the tree from the root to the leaf node on every dirty page. What's bothering is that radix tree tag is used for page write back. However, shmem is memory backed and there is no page write back for such file system. And in the end, we spend all that time tagging radix tree and none of that fancy tagging will be used. So let's simplify it by introduce a new aops __set_page_dirty_no_writeback and this will speed up shm unmap. Signed-off-by: Ken Chen Cc: Peter Zijlstra Cc: Hugh Dickins 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 26adfcc0d61a..77a76101dcd9 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -785,6 +785,7 @@ extern int try_to_release_page(struct page * page, gfp_t gfp_mask); extern void do_invalidatepage(struct page *page, unsigned long offset); int __set_page_dirty_nobuffers(struct page *page); +int __set_page_dirty_no_writeback(struct page *page); int redirty_page_for_writepage(struct writeback_control *wbc, struct page *page); int FASTCALL(set_page_dirty(struct page *page)); -- cgit v1.2.3 From 70e840499aae90be1de542894062ad2899d23642 Mon Sep 17 00:00:00 2001 From: Miguel Ojeda Sandonis Date: Sat, 10 Feb 2007 01:44:32 -0800 Subject: [PATCH] drivers: add LCD support Add support for auxiliary displays, the ks0108 LCD controller, the cfag12864b LCD and adds a framebuffer device: cfag12864bfb. - Add a "auxdisplay/" folder in "drivers/" for auxiliary display drivers. - Add support for the ks0108 LCD Controller as a device driver. (uses parport interface) - Add support for the cfag12864b LCD as a device driver. (uses ks0108 LCD Controller driver) - Add a framebuffer device called cfag12864bfb. (uses cfag12864b LCD driver) - Add the usual Documentation, includes, Makefiles, Kconfigs, MAINTAINERS, CREDITS... - Miguel Ojeda will maintain all the stuff above. [rdunlap@xenotime.net: workqueue fixups] [akpm@osdl.org: kconfig fix] Signed-off-by: Miguel Ojeda Sandonis Cc: Greg KH Acked-by: Paulo Marques Cc: "Randy.Dunlap" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/cfag12864b.h | 77 ++++++++++++++++++++++++++++++++++++++++++++++ include/linux/ks0108.h | 46 +++++++++++++++++++++++++++ 2 files changed, 123 insertions(+) create mode 100644 include/linux/cfag12864b.h create mode 100644 include/linux/ks0108.h (limited to 'include/linux') diff --git a/include/linux/cfag12864b.h b/include/linux/cfag12864b.h new file mode 100644 index 000000000000..0bc45e69da5a --- /dev/null +++ b/include/linux/cfag12864b.h @@ -0,0 +1,77 @@ +/* + * Filename: cfag12864b.h + * Version: 0.1.0 + * Description: cfag12864b LCD driver header + * License: GPLv2 + * + * Author: Copyright (C) Miguel Ojeda Sandonis + * Date: 2006-10-12 + * + * 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 _CFAG12864B_H_ +#define _CFAG12864B_H_ + +#define CFAG12864B_WIDTH (128) +#define CFAG12864B_HEIGHT (64) +#define CFAG12864B_CONTROLLERS (2) +#define CFAG12864B_PAGES (8) +#define CFAG12864B_ADDRESSES (64) +#define CFAG12864B_SIZE ((CFAG12864B_CONTROLLERS) * \ + (CFAG12864B_PAGES) * \ + (CFAG12864B_ADDRESSES)) + +/* + * The driver will blit this buffer to the LCD + * + * Its size is CFAG12864B_SIZE. + */ +extern unsigned char * cfag12864b_buffer; + +/* + * Get the refresh rate of the LCD + * + * Returns the refresh rate (hertzs). + */ +extern unsigned int cfag12864b_getrate(void); + +/* + * Enable refreshing + * + * Returns 0 if successful (anyone was using it), + * or != 0 if failed (someone is using it). + */ +extern unsigned char cfag12864b_enable(void); + +/* + * Disable refreshing + * + * You should call this only when you finish using the LCD. + */ +extern void cfag12864b_disable(void); + +/* + * Is enabled refreshing? (is anyone using the module?) + * + * Returns 0 if refreshing is not enabled (anyone is using it), + * or != 0 if refreshing is enabled (someone is using it). + * + * Useful for buffer read-only modules. + */ +extern unsigned char cfag12864b_isenabled(void); + +#endif /* _CFAG12864B_H_ */ + diff --git a/include/linux/ks0108.h b/include/linux/ks0108.h new file mode 100644 index 000000000000..8047d4b17bf1 --- /dev/null +++ b/include/linux/ks0108.h @@ -0,0 +1,46 @@ +/* + * Filename: ks0108.h + * Version: 0.1.0 + * Description: ks0108 LCD Controller driver header + * License: GPLv2 + * + * Author: Copyright (C) Miguel Ojeda Sandonis + * Date: 2006-10-31 + * + * 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 _KS0108_H_ +#define _KS0108_H_ + +/* Write a byte to the data port */ +extern void ks0108_writedata(unsigned char byte); + +/* Write a byte to the control port */ +extern void ks0108_writecontrol(unsigned char byte); + +/* Set the controller's current display state (0..1) */ +extern void ks0108_displaystate(unsigned char state); + +/* Set the controller's current startline (0..63) */ +extern void ks0108_startline(unsigned char startline); + +/* Set the controller's current address (0..63) */ +extern void ks0108_address(unsigned char address); + +/* Set the controller's current page (0..7) */ +extern void ks0108_page(unsigned char page); + +#endif /* _KS0108_H_ */ -- cgit v1.2.3 From 8b6312f4dcc1efe7975731b6c47dd134282bd9ac Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Sat, 10 Feb 2007 01:44:34 -0800 Subject: [PATCH] vt: refactor console SAK processing This does several things. - It moves looking up of the current foreground console into process context where we can safely take the semaphore that protects this operation. - It uses the new flavor of work queue processing. - This generates a factor of do_SAK, __do_SAK that runs immediately. - This calls __do_SAK with the console semaphore held ensuring nothing else happens to the console while we process the SAK operation. - With the console SAK processing moved into process context this patch removes the xchg operations that I used to attempt to attomically update struct pid, because of the strange locking used in the SAK processing. With SAK using the normal console semaphore nothing special is needed. Cc: Oleg Nesterov Signed-off-by: Eric W. Biederman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/console_struct.h | 3 +++ include/linux/tty.h | 1 + 2 files changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/console_struct.h b/include/linux/console_struct.h index ed6c0fee1ac7..a86162b26c0d 100644 --- a/include/linux/console_struct.h +++ b/include/linux/console_struct.h @@ -11,6 +11,7 @@ #include #include +#include struct vt_struct; @@ -103,6 +104,7 @@ struct vc_data { struct vc { struct vc_data *d; + struct work_struct SAK_work; /* might add scrmem, vt_struct, kbd at some time, to have everything in one place - the disadvantage @@ -110,6 +112,7 @@ struct vc { }; extern struct vc vc_cons [MAX_NR_CONSOLES]; +extern void vc_SAK(struct work_struct *work); #define CUR_DEF 0 #define CUR_NONE 1 diff --git a/include/linux/tty.h b/include/linux/tty.h index 65cbcf22c31e..0161a8c6dbf6 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -291,6 +291,7 @@ extern void tty_vhangup(struct tty_struct * tty); extern void tty_unhangup(struct file *filp); extern int tty_hung_up_p(struct file * filp); extern void do_SAK(struct tty_struct *tty); +extern void __do_SAK(struct tty_struct *tty); extern void disassociate_ctty(int priv); extern void tty_flip_buffer_push(struct tty_struct *tty); extern speed_t tty_get_baud_rate(struct tty_struct *tty); -- cgit v1.2.3 From 7131b6d167b41593463ce98df17e101e776bf5ec Mon Sep 17 00:00:00 2001 From: Adrian Bunk Date: Sat, 10 Feb 2007 01:44:40 -0800 Subject: [PATCH] remove include/linux/byteorder/pdp_endian.h include/linux/byteorder/pdp_endian.h is completely unused, and the comment in the file itself states that it's both untested and only a proof-of-concept. Signed-off-by: Adrian Bunk Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/byteorder/Kbuild | 1 - include/linux/byteorder/pdp_endian.h | 88 ------------------------------------ 2 files changed, 89 deletions(-) delete mode 100644 include/linux/byteorder/pdp_endian.h (limited to 'include/linux') diff --git a/include/linux/byteorder/Kbuild b/include/linux/byteorder/Kbuild index 56499ab9e32e..d39dc0f7c67e 100644 --- a/include/linux/byteorder/Kbuild +++ b/include/linux/byteorder/Kbuild @@ -1,6 +1,5 @@ header-y += big_endian.h header-y += little_endian.h -header-y += pdp_endian.h unifdef-y += generic.h unifdef-y += swabb.h diff --git a/include/linux/byteorder/pdp_endian.h b/include/linux/byteorder/pdp_endian.h deleted file mode 100644 index 618631cbc6e3..000000000000 --- a/include/linux/byteorder/pdp_endian.h +++ /dev/null @@ -1,88 +0,0 @@ -#ifndef _LINUX_BYTEORDER_PDP_ENDIAN_H -#define _LINUX_BYTEORDER_PDP_ENDIAN_H - -/* - * Could have been named NUXI-endian, but we use the same name as in glibc. - * hopefully only the PDP and its evolutions (old VAXen in compatibility mode) - * should ever use this braindead byteorder. - * This file *should* work, but has not been tested. - * - * little-endian is 1234; big-endian is 4321; nuxi/pdp-endian is 3412 - * - * I thought vaxen were NUXI-endian, but was told they were correct-endian - * (little-endian), though indeed there existed NUXI-endian machines - * (DEC PDP-11 and old VAXen in compatibility mode). - * This makes this file a bit useless, but as a proof-of-concept. - * - * But what does a __u64 look like: is it 34127856 or 78563412 ??? - * I don't dare imagine! Hence, no 64-bit byteorder support yet. - * Hopefully, there 64-bit pdp-endian support shouldn't ever be required. - * - */ - -#ifndef __PDP_ENDIAN -#define __PDP_ENDIAN 3412 -#endif -#ifndef __PDP_ENDIAN_BITFIELD -#define __PDP_ENDIAN_BITFIELD -#endif - -#include -#include - -#define __constant_htonl(x) ___constant_swahb32((x)) -#define __constant_ntohl(x) ___constant_swahb32((x)) -#define __constant_htons(x) ___constant_swab16((x)) -#define __constant_ntohs(x) ___constant_swab16((x)) -#define __constant_cpu_to_le64(x) I DON'T KNOW -#define __constant_le64_to_cpu(x) I DON'T KNOW -#define __constant_cpu_to_le32(x) ___constant_swahw32((x)) -#define __constant_le32_to_cpu(x) ___constant_swahw32((x)) -#define __constant_cpu_to_le16(x) ((__u16)(x) -#define __constant_le16_to_cpu(x) ((__u16)(x) -#define __constant_cpu_to_be64(x) I DON'T KNOW -#define __constant_be64_to_cpu(x) I DON'T KNOW -#define __constant_cpu_to_be32(x) ___constant_swahb32((x)) -#define __constant_be32_to_cpu(x) ___constant_swahb32((x)) -#define __constant_cpu_to_be16(x) ___constant_swab16((x)) -#define __constant_be16_to_cpu(x) ___constant_swab16((x)) -#define __cpu_to_le64(x) I DON'T KNOW -#define __le64_to_cpu(x) I DON'T KNOW -#define __cpu_to_le32(x) ___swahw32((x)) -#define __le32_to_cpu(x) ___swahw32((x)) -#define __cpu_to_le16(x) ((__u16)(x) -#define __le16_to_cpu(x) ((__u16)(x) -#define __cpu_to_be64(x) I DON'T KNOW -#define __be64_to_cpu(x) I DON'T KNOW -#define __cpu_to_be32(x) __swahb32((x)) -#define __be32_to_cpu(x) __swahb32((x)) -#define __cpu_to_be16(x) __swab16((x)) -#define __be16_to_cpu(x) __swab16((x)) -#define __cpu_to_le64p(x) I DON'T KNOW -#define __le64_to_cpup(x) I DON'T KNOW -#define __cpu_to_le32p(x) ___swahw32p((x)) -#define __le32_to_cpup(x) ___swahw32p((x)) -#define __cpu_to_le16p(x) (*(__u16*)(x)) -#define __le16_to_cpup(x) (*(__u16*)(x)) -#define __cpu_to_be64p(x) I DON'T KNOW -#define __be64_to_cpup(x) I DON'T KNOW -#define __cpu_to_be32p(x) __swahb32p((x)) -#define __be32_to_cpup(x) __swahb32p((x)) -#define __cpu_to_be16p(x) __swab16p((x)) -#define __be16_to_cpup(x) __swab16p((x)) -#define __cpu_to_le64s(x) I DON'T KNOW -#define __le64_to_cpus(x) I DON'T KNOW -#define __cpu_to_le32s(x) ___swahw32s((x)) -#define __le32_to_cpus(x) ___swahw32s((x)) -#define __cpu_to_le16s(x) do {} while (0) -#define __le16_to_cpus(x) do {} while (0) -#define __cpu_to_be64s(x) I DON'T KNOW -#define __be64_to_cpus(x) I DON'T KNOW -#define __cpu_to_be32s(x) __swahb32s((x)) -#define __be32_to_cpus(x) __swahb32s((x)) -#define __cpu_to_be16s(x) __swab16s((x)) -#define __be16_to_cpus(x) __swab16s((x)) - -#include - -#endif /* _LINUX_BYTEORDER_PDP_ENDIAN_H */ -- cgit v1.2.3 From 780a065668b1c6ca6a70c7d36b9f6552ea3bb5f5 Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Sat, 10 Feb 2007 01:44:41 -0800 Subject: [PATCH] count_vm_events-warning-fix - Prevent things like this: block/ll_rw_blk.c: In function 'submit_bio': block/ll_rw_blk.c:3222: warning: unused variable 'count' inlines are very, very preferable to macros. - remove unused get_cpu_vm_events() macro Cc: Christoph Lameter Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/vmstat.h | 47 +++++++++++++++++++++++++++++------------------ 1 file changed, 29 insertions(+), 18 deletions(-) (limited to 'include/linux') diff --git a/include/linux/vmstat.h b/include/linux/vmstat.h index 7ba91f2839fa..acb1f105870c 100644 --- a/include/linux/vmstat.h +++ b/include/linux/vmstat.h @@ -7,18 +7,6 @@ #include #include -#ifdef CONFIG_VM_EVENT_COUNTERS -/* - * Light weight per cpu counter implementation. - * - * Counters should only be incremented. You need to set EMBEDDED - * to disable VM_EVENT_COUNTERS. Things like procps (vmstat, - * top, etc) use /proc/vmstat and depend on these counters. - * - * Counters are handled completely inline. On many platforms the code - * generated will simply be the increment of a global address. - */ - #ifdef CONFIG_ZONE_DMA #define DMA_ZONE(xx) xx##_DMA, #else @@ -52,6 +40,17 @@ enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT, NR_VM_EVENT_ITEMS }; +#ifdef CONFIG_VM_EVENT_COUNTERS +/* + * Light weight per cpu counter implementation. + * + * Counters should only be incremented and no critical kernel component + * should rely on the counter values. + * + * Counters are handled completely inline. On many platforms the code + * generated will simply be the increment of a global address. + */ + struct vm_event_state { unsigned long event[NR_VM_EVENT_ITEMS]; }; @@ -92,12 +91,24 @@ static inline void vm_events_fold_cpu(int cpu) #else /* Disable counters */ -#define get_cpu_vm_events(e) 0L -#define count_vm_event(e) do { } while (0) -#define count_vm_events(e,d) do { } while (0) -#define __count_vm_event(e) do { } while (0) -#define __count_vm_events(e,d) do { } while (0) -#define vm_events_fold_cpu(x) do { } while (0) +static inline void count_vm_event(enum vm_event_item item) +{ +} +static inline void count_vm_events(enum vm_event_item item, long delta) +{ +} +static inline void __count_vm_event(enum vm_event_item item) +{ +} +static inline void __count_vm_events(enum vm_event_item item, long delta) +{ +} +static inline void all_vm_events(unsigned long *ret) +{ +} +static inline void vm_events_fold_cpu(int cpu) +{ +} #endif /* CONFIG_VM_EVENT_COUNTERS */ -- cgit v1.2.3 From 4ba4d4c0c52201009232fe9e781a281054a24e75 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Sat, 10 Feb 2007 01:44:48 -0800 Subject: [PATCH] struct vfsmount: keep mnt_count & mnt_expiry_mark away from mnt_flags I noticed cache misses in touch_atime() that can be avoided if we keep mnt_count & mnt_expiry_mark in a different cache line than mnt_flags (mostly read) mnt_count & mnt_expiry_mark are modified each time a file is opened/closed in a file system. touch_atime() is called each time a file is read, and generally needs to read mnt_flags. Other fields of struct vfsmount are mostly read so I chose to move mnt_count & mnt_expiry_mark at the end of struct vfsmount. And adding a comment so that nobody tries to re-arrange fields to fill the holes :) On 64bits platforms, the new offsetof(mnt_count) is 0xC0 On 32bits platforms, it is 0x60, so I didnot add a ____cacheline_aligned_in_smp because it would have a too big impact on the size of this object (in particular if CONFIG_X86_L1_CACHE_SHIFT=7) Signed-off-by: Eric Dumazet Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mount.h | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mount.h b/include/linux/mount.h index 1b7e178b0d84..dab69afee2fa 100644 --- a/include/linux/mount.h +++ b/include/linux/mount.h @@ -43,9 +43,8 @@ struct vfsmount { struct super_block *mnt_sb; /* pointer to superblock */ struct list_head mnt_mounts; /* list of children, anchored here */ struct list_head mnt_child; /* and going through their mnt_child */ - atomic_t mnt_count; int mnt_flags; - int mnt_expiry_mark; /* true if marked for expiry */ + /* 4 bytes hole on 64bits arches */ char *mnt_devname; /* Name of device e.g. /dev/dsk/hda1 */ struct list_head mnt_list; struct list_head mnt_expire; /* link in fs-specific expiry list */ @@ -54,6 +53,13 @@ struct vfsmount { struct list_head mnt_slave; /* slave list entry */ struct vfsmount *mnt_master; /* slave is on master->mnt_slave_list */ struct mnt_namespace *mnt_ns; /* containing namespace */ + /* + * 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; }; -- cgit v1.2.3 From 37756ced1f145aec18917812c3b8a96dbb47990d Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Sat, 10 Feb 2007 01:44:49 -0800 Subject: [PATCH] avoid one conditional branch in touch_atime() I added IS_NOATIME(inode) macro definition in include/linux/fs.h, true if the inode superblock is marked readonly or noatime. This new macro is then used in touch_atime() instead of separatly testing MS_RDONLY and MS_NOATIME Signed-off-by: Eric Dumazet 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 1410e5330c8d..822c545c7209 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -169,6 +169,7 @@ extern int dir_notify_enable; #define IS_DIRSYNC(inode) (__IS_FLG(inode, MS_SYNCHRONOUS|MS_DIRSYNC) || \ ((inode)->i_flags & (S_SYNC|S_DIRSYNC))) #define IS_MANDLOCK(inode) __IS_FLG(inode, MS_MANDLOCK) +#define IS_NOATIME(inode) __IS_FLG(inode, MS_RDONLY|MS_NOATIME) #define IS_NOQUOTA(inode) ((inode)->i_flags & S_NOQUOTA) #define IS_APPEND(inode) ((inode)->i_flags & S_APPEND) -- cgit v1.2.3 From 068135e63518314d4efd711142f674ad0841599e Mon Sep 17 00:00:00 2001 From: Jason Baron Date: Sat, 10 Feb 2007 01:44:59 -0800 Subject: [PATCH] lockdep: add graph depth information to /proc/lockdep Generate locking graph information into /proc/lockdep, for lock hierarchy documentation and visualization purposes. sample output: c089fd5c OPS: 138 FD: 14 BD: 1 --..: &tty->termios_mutex -> [c07a3430] tty_ldisc_lock -> [c07a37f0] &port_lock_key -> [c07afdc0] &rq->rq_lock_key#2 The lock classes listed are all the first-hop lock dependencies that lockdep has seen so far. Signed-off-by: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/lockdep.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h index ea097dddc44f..7e1160dde5e7 100644 --- a/include/linux/lockdep.h +++ b/include/linux/lockdep.h @@ -132,6 +132,7 @@ struct lock_list { struct list_head entry; struct lock_class *class; struct stack_trace trace; + int distance; }; /* -- cgit v1.2.3 From 4564f9e5fd00767d11fcf61e0d52787706dfcc87 Mon Sep 17 00:00:00 2001 From: Tilman Schmidt Date: Sat, 10 Feb 2007 01:45:00 -0800 Subject: [PATCH] consolidate line discipline number definitions The line discipline numbers N_* are currently defined for each architecture individually, but (except for a seeming mistake) identically, in asm/termios.h. There is no obvious reason why these numbers should be architecture specific, nor any apparent relationship with the termios structure. The total number of these, NR_LDISCS, is defined in linux/tty.h anyway. So I propose the following patch which moves the definitions of the individual line disciplines to linux/tty.h too. Three of these numbers (N_MASC, N_PROFIBUS_FDL, and N_SMSBLOCK) are unused in the current kernel, but the patch still keeps the complete set in case there are plans to use them yet. Signed-off-by: Tilman Schmidt Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/tty.h | 22 +++++++++++++++++++++- 1 file changed, 21 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/tty.h b/include/linux/tty.h index 0161a8c6dbf6..8427c9e98e6b 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -24,7 +24,27 @@ #define NR_PTYS CONFIG_LEGACY_PTY_COUNT /* Number of legacy ptys */ #define NR_UNIX98_PTY_DEFAULT 4096 /* Default maximum for Unix98 ptys */ #define NR_UNIX98_PTY_MAX (1 << MINORBITS) /* Absolute limit */ -#define NR_LDISCS 16 +#define NR_LDISCS 17 + +/* line disciplines */ +#define N_TTY 0 +#define N_SLIP 1 +#define N_MOUSE 2 +#define N_PPP 3 +#define N_STRIP 4 +#define N_AX25 5 +#define N_X25 6 /* X.25 async */ +#define N_6PACK 7 +#define N_MASC 8 /* Reserved for Mobitex module */ +#define N_R3964 9 /* Reserved for Simatic R3964 module */ +#define N_PROFIBUS_FDL 10 /* Reserved for Profibus */ +#define N_IRDA 11 /* Linux IrDa - http://irda.sourceforge.net/ */ +#define N_SMSBLOCK 12 /* SMS block mode - for talking to GSM data */ + /* cards about SMS messages */ +#define N_HDLC 13 /* synchronous HDLC */ +#define N_SYNC_PPP 14 /* synchronous PPP */ +#define N_HCI 15 /* Bluetooth HCI UART */ +#define N_GIGASET_M101 16 /* Siemens Gigaset M101 serial DECT adapter */ /* * This character is the same as _POSIX_VDISABLE: it cannot be used as -- cgit v1.2.3 From 57a87bb0720a5cf7a9ece49a8c8ed288398fd1bb Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Sat, 10 Feb 2007 01:45:01 -0800 Subject: [PATCH] scrub non-__GLIBC__ checks in linux/socket.h and linux/stat.h Userspace should be worrying about userspace, so having the socket.h and stat.h pollute the namespace in the non-glibc case is wrong and pretty much prevents any other libc from utilizing these headers sanely unless they set up the __GLIBC__ define themselves (which sucks) Cc: "David S. Miller" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/socket.h | 2 +- include/linux/stat.h | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/socket.h b/include/linux/socket.h index fcd35a210e7f..28157a36e6cc 100644 --- a/include/linux/socket.h +++ b/include/linux/socket.h @@ -16,7 +16,7 @@ struct __kernel_sockaddr_storage { /* _SS_MAXSIZE value minus size of ss_family */ } __attribute__ ((aligned(_K_SS_ALIGNSIZE))); /* force desired alignment */ -#if defined(__KERNEL__) || !defined(__GLIBC__) || (__GLIBC__ < 2) +#ifdef __KERNEL__ #include /* arch-dependent defines */ #include /* the SIOCxxx I/O controls */ diff --git a/include/linux/stat.h b/include/linux/stat.h index 679ef0d70b6b..4f8539ccff6c 100644 --- a/include/linux/stat.h +++ b/include/linux/stat.h @@ -7,7 +7,7 @@ #endif -#if defined(__KERNEL__) || !defined(__GLIBC__) || (__GLIBC__ < 2) +#ifdef __KERNEL__ #define S_IFMT 00170000 #define S_IFSOCK 0140000 -- cgit v1.2.3 From 1b135431abf5ea92e61bf4e91d93726c7b96da5f Mon Sep 17 00:00:00 2001 From: Adrian Bunk Date: Sat, 10 Feb 2007 01:45:02 -0800 Subject: [PATCH] drivers/char/vc_screen.c: proper prototypes Add proper prototypes for two functions in drivers/char/vc_screen.c Signed-off-by: Adrian Bunk Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/console.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/console.h b/include/linux/console.h index 7d0420274de0..de25ee3b7919 100644 --- a/include/linux/console.h +++ b/include/linux/console.h @@ -21,6 +21,7 @@ struct vc_data; struct console_font_op; struct console_font; struct module; +struct tty_struct; /* * this is what the terminal answers to a ESC-Z or csi0c query. @@ -132,6 +133,9 @@ static inline void resume_console(void) {} int mda_console_init(void); void prom_con_init(void); +void vcs_make_sysfs(struct tty_struct *tty); +void vcs_remove_sysfs(struct tty_struct *tty); + /* Some debug stub to catch some of the obvious races in the VT code */ #if 1 #define WARN_CONSOLE_UNLOCKED() WARN_ON(!is_console_locked() && !oops_in_progress) -- cgit v1.2.3 From 23c887522e912ca494950796a95df8dd210f4b01 Mon Sep 17 00:00:00 2001 From: Mathieu Desnoyers Date: Sat, 10 Feb 2007 01:45:05 -0800 Subject: [PATCH] Relay: add CPU hotplug support Mathieu originally needed to add this for tracing Xen, but it's something that's needed for any application that can be tracing while cpus are added. unplug isn't supported by this patch. The thought was that at minumum a new buffer needs to be added when a cpu comes up, but it wasn't worth the effort to remove buffers on cpu down since they'd be freed soon anyway when the channel was closed. [zanussi@us.ibm.com: avoid lock_cpu_hotplug deadlock] Signed-off-by: Mathieu Desnoyers Cc: Tom Zanussi Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/relay.h | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/relay.h b/include/linux/relay.h index c6a48bfc8b14..759a0f97bec2 100644 --- a/include/linux/relay.h +++ b/include/linux/relay.h @@ -24,7 +24,7 @@ /* * Tracks changes to rchan/rchan_buf structs */ -#define RELAYFS_CHANNEL_VERSION 6 +#define RELAYFS_CHANNEL_VERSION 7 /* * Per-cpu relay channel buffer @@ -64,6 +64,10 @@ struct rchan void *private_data; /* for user-defined data */ size_t last_toobig; /* tried to log event > subbuf size */ struct rchan_buf *buf[NR_CPUS]; /* per-cpu channel buffers */ + int is_global; /* One global buffer ? */ + struct list_head list; /* for channel list */ + struct dentry *parent; /* parent dentry passed to open */ + char base_filename[NAME_MAX]; /* saved base filename */ }; /* @@ -162,7 +166,8 @@ struct rchan *relay_open(const char *base_filename, struct dentry *parent, size_t subbuf_size, size_t n_subbufs, - struct rchan_callbacks *cb); + struct rchan_callbacks *cb, + void *private_data); extern void relay_close(struct rchan *chan); extern void relay_flush(struct rchan *chan); extern void relay_subbufs_consumed(struct rchan *chan, -- cgit v1.2.3 From cbcdc1debd02e1a2cbc1367ee7e0213e1041f738 Mon Sep 17 00:00:00 2001 From: David Brownell Date: Sat, 10 Feb 2007 01:45:13 -0800 Subject: [PATCH] PNP: export pnp_bus_type The PNP framework doesn't export "pnp_bus_type", which is an unfortunate exception to the policy followed by pretty much every other bus. I noticed this when I had to find a device in order to provide its platform_data. Note that per advice from Arjan, the "export" scope has been been minimized to avoid the hundred-plus bytes needed to support access from modules. In this case, the symbol is only needed by statically linked kernel code that lives outside the drivers/pnp directory. Signed-off-by: David Brownell Cc: Adam Belay Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/pnp.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pnp.h b/include/linux/pnp.h index ab8a8dd8d64c..9a5226f0f169 100644 --- a/include/linux/pnp.h +++ b/include/linux/pnp.h @@ -352,6 +352,8 @@ struct pnp_protocol { (dev) = protocol_to_pnp_dev((dev)->protocol_list.next)) +extern struct bus_type pnp_bus_type; + #if defined(CONFIG_PNP) /* device management */ -- cgit v1.2.3 From 34f5a39899f3f3e815da64f48ddb72942d86c366 Mon Sep 17 00:00:00 2001 From: Theodore Ts'o Date: Sat, 10 Feb 2007 01:45:24 -0800 Subject: [PATCH] Add TAINT_USER and ability to set taint flags from userspace Allow taint flags to be set from userspace by writing to /proc/sys/kernel/tainted, and add a new taint flag, TAINT_USER, to be used when userspace has potentially done something dangerous that might compromise the kernel. This will allow support personnel to ask further questions about what may have caused the user taint flag to have been set. For example, they might examine the logs of the realtime JVM to see if the Java program has used the really silly, stupid, dangerous, and completely-non-portable direct access to physical memory feature which MUST be implemented according to the Real-Time Specification for Java (RTSJ). Sigh. What were those silly people at Sun thinking? [akpm@osdl.org: build fix] [bunk@stusta.de: cleanup] Signed-off-by: "Theodore Ts'o" Signed-off-by: Adrian Bunk Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- 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 63fb18dcac30..e1a429ada97f 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -200,6 +200,7 @@ extern enum system_states { #define TAINT_FORCED_RMMOD (1<<3) #define TAINT_MACHINE_CHECK (1<<4) #define TAINT_BAD_PAGE (1<<5) +#define TAINT_USER (1<<6) extern void dump_stack(void); -- cgit v1.2.3 From 224299d444ce97e0c78a9e8ea930589ff8861404 Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Sat, 10 Feb 2007 01:45:29 -0800 Subject: [PATCH] Char: moxa, devids cleanup Move them to pci_ids.h Signed-off-by: Jiri Slaby Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- 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 e67b68ca235a..e5e5b9ffcfb5 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -1811,6 +1811,9 @@ #define PCI_DEVICE_ID_MOXA_C168 0x1680 #define PCI_DEVICE_ID_MOXA_CP168U 0x1681 #define PCI_DEVICE_ID_MOXA_CP168EL 0x1682 +#define PCI_DEVICE_ID_MOXA_CP204J 0x2040 +#define PCI_DEVICE_ID_MOXA_C218 0x2180 +#define PCI_DEVICE_ID_MOXA_C320 0x3200 #define PCI_VENDOR_ID_CCD 0x1397 #define PCI_DEVICE_ID_CCD_2BD0 0x2bd0 -- cgit v1.2.3 From 54bc485522afdac33de5504da2ea8cdcc690674e Mon Sep 17 00:00:00 2001 From: Anton Altaparmakov Date: Sat, 10 Feb 2007 01:45:38 -0800 Subject: [PATCH] Export invalidate_mapping_pages() to modules It makes no sense to me to export invalidate_inode_pages() and not invalidate_mapping_pages() and I actually need invalidate_mapping_pages() because of its range specification ability... akpm: also remove the export of invalidate_inode_pages() by making it an inlined wrapper. Signed-off-by: Anton Altaparmakov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- 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 822c545c7209..a1180d05ed96 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1573,7 +1573,13 @@ extern int invalidate_partition(struct gendisk *, int); extern int invalidate_inodes(struct super_block *); unsigned long invalidate_mapping_pages(struct address_space *mapping, pgoff_t start, pgoff_t end); -unsigned long invalidate_inode_pages(struct address_space *mapping); + +static inline unsigned long +invalidate_inode_pages(struct address_space *mapping) +{ + return invalidate_mapping_pages(mapping, 0, ~0UL); +} + static inline void invalidate_remote_inode(struct inode *inode) { if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || -- cgit v1.2.3 From fc0ecff698165ae8e178efa086e0dd1f385206b1 Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Sat, 10 Feb 2007 01:45:39 -0800 Subject: [PATCH] remove invalidate_inode_pages() Convert all calls to invalidate_inode_pages() into open-coded calls to invalidate_mapping_pages(). Leave the invalidate_inode_pages() wrapper in place for now, marked as deprecated. Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- 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 a1180d05ed96..20fd1619ccfb 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1574,7 +1574,7 @@ extern int invalidate_inodes(struct super_block *); unsigned long invalidate_mapping_pages(struct address_space *mapping, pgoff_t start, pgoff_t end); -static inline unsigned long +static inline unsigned long __deprecated invalidate_inode_pages(struct address_space *mapping) { return invalidate_mapping_pages(mapping, 0, ~0UL); @@ -1584,7 +1584,7 @@ static inline void invalidate_remote_inode(struct inode *inode) { if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode)) - invalidate_inode_pages(inode->i_mapping); + invalidate_mapping_pages(inode->i_mapping, 0, -1); } extern int invalidate_inode_pages2(struct address_space *mapping); extern int invalidate_inode_pages2_range(struct address_space *mapping, -- cgit v1.2.3 From 3db5db4fcdafc85b99d171336a7d2f25765ccd13 Mon Sep 17 00:00:00 2001 From: Helge Deller Date: Sat, 10 Feb 2007 01:45:40 -0800 Subject: [PATCH] use cycle_t instead of u64 in struct time_interpolator The 32bit and 64bit PARISC Linux kernels suffers from the problem, that the gettimeofday() call sometimes returns non-monotonic times. The easiest way to fix this, is to drop the PARISC-specific implementation and switch over to the generic TIME_INTERPOLATION framework. But in order to make it even compile on 32bit PARISC, the patch below which touches the generic Linux code, is mandatory. More information and the full patch with the parisc-specific changes is included in this thread: http://lists.parisc-linux.org/pipermail/parisc-linux/2006-December/031003.html As far as I could see, this patch does not change anything for the existing architectures which use this framework (IA64 and SPARC64), since "cycles_t" is defined there as unsigned 64bit-integer anyway (which then makes this patch a no-change for them). Signed-off-by: Helge Deller Cc: Cc: Thomas Gleixner Cc: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/timex.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/timex.h b/include/linux/timex.h index db501dc23c29..9a24e500c311 100644 --- a/include/linux/timex.h +++ b/include/linux/timex.h @@ -255,10 +255,10 @@ struct time_interpolator { u8 jitter; /* if set compensate for fluctuations */ u32 nsec_per_cyc; /* set by register_time_interpolator() */ void *addr; /* address of counter or function */ - u64 mask; /* mask the valid bits of the counter */ + cycles_t mask; /* mask the valid bits of the counter */ unsigned long offset; /* nsec offset at last update of interpolator */ u64 last_counter; /* counter value in units of the counter at last update */ - u64 last_cycle; /* Last timer value if TIME_SOURCE_JITTER is set */ + cycles_t last_cycle; /* Last timer value if TIME_SOURCE_JITTER is set */ u64 frequency; /* frequency in counts/second */ long drift; /* drift in parts-per-million (or -1) */ unsigned long skips; /* skips forward */ -- cgit v1.2.3 From 3678d62f028689abc8ac5693b254e48f605f94ba Mon Sep 17 00:00:00 2001 From: Corey Minyard Date: Sat, 10 Feb 2007 01:45:42 -0800 Subject: [PATCH] add an RCU version of list splicing This patch is in support of the IPMI driver. I have tested this with the IPMI driver changes coming in the next patch. Add a list_splice_init_rcu() function to splice an RCU-protected list into another list. This takes the sync function as an argument, so one would do something like: INIT_LIST_HEAD(&list); list_splice_init_rcu(&source, &dest, synchronize_rcu); The idea being to keep the RCU API proliferation down to a dull roar. [akpm@osdl.org: build fix] Signed-off-by: Paul E. McKenney Signed-off-by: Corey Minyard Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/list.h | 56 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) (limited to 'include/linux') diff --git a/include/linux/list.h b/include/linux/list.h index 611059d633f4..cdc96559e5ae 100644 --- a/include/linux/list.h +++ b/include/linux/list.h @@ -359,6 +359,62 @@ static inline void list_splice_init(struct list_head *list, } } +/** + * list_splice_init_rcu - splice an RCU-protected list into an existing list. + * @list: the RCU-protected list to splice + * @head: the place in the list to splice the first list into + * @sync: function to sync: synchronize_rcu(), synchronize_sched(), ... + * + * @head can be RCU-read traversed concurrently with this function. + * + * Note that this function blocks. + * + * Important note: the caller must take whatever action is necessary to + * prevent any other updates to @head. In principle, it is possible + * to modify the list as soon as sync() begins execution. + * If this sort of thing becomes necessary, an alternative version + * based on call_rcu() could be created. But only if -really- + * needed -- there is no shortage of RCU API members. + */ +static inline void list_splice_init_rcu(struct list_head *list, + struct list_head *head, + void (*sync)(void)) +{ + struct list_head *first = list->next; + struct list_head *last = list->prev; + struct list_head *at = head->next; + + if (list_empty(head)) + return; + + /* "first" and "last" tracking list, so initialize it. */ + + INIT_LIST_HEAD(list); + + /* + * At this point, the list body still points to the source list. + * Wait for any readers to finish using the list before splicing + * the list body into the new list. Any new readers will see + * an empty list. + */ + + sync(); + + /* + * Readers are finished with the source list, so perform splice. + * The order is important if the new list is global and accessible + * to concurrent RCU readers. Note that RCU readers are not + * permitted to traverse the prev pointers without excluding + * this function. + */ + + last->next = at; + smp_wmb(); + head->next = first; + first->prev = head; + at->prev = last; +} + /** * list_entry - get the struct for this entry * @ptr: the &struct list_head pointer. -- cgit v1.2.3 From 4419d1ac7def3c2f74cab15e4a1c69cffcaadedd Mon Sep 17 00:00:00 2001 From: Olaf Hering Date: Sat, 10 Feb 2007 01:45:47 -0800 Subject: [PATCH] relax check for AIX in msdos partition table The patch to identify AIX disks and ignore them has caused at least one machine to fail to find the root partition on 2.6.19. The patch is: http://lkml.org/lkml/2006/7/31/117 The problem is some disk formatters do not blow away the first 4 bytes of the disk. If the disk we are installing to used to have AIX on it, then the first 4 bytes will still have IBMA in EBCDIC. The install in question was debian etch. Im not sure what the best fix is, perhaps the AIX detection code could check more than the first 4 bytes. The whole partition info for primary partitions is in this block: dd if=/dev/sdb count=$(( 4 * 16 )) bs=1 skip=$(( 0x1be )) All other data do not matter, beside the 0x55aa marker at the end of the first block. Signed-off-by: Olaf Hering Cc: OGAWA Hirofumi Cc: Anton Blanchard Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/genhd.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/genhd.h b/include/linux/genhd.h index 0a022b2f63fc..7a566fad3f72 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -21,6 +21,8 @@ enum { WIN98_EXTENDED_PARTITION = 0x0f, LINUX_SWAP_PARTITION = 0x82, + LINUX_DATA_PARTITION = 0x83, + LINUX_LVM_PARTITION = 0x8e, LINUX_RAID_PARTITION = 0xfd, /* autodetect RAID partition */ SOLARIS_X86_PARTITION = LINUX_SWAP_PARTITION, -- cgit v1.2.3 From 77adbfbf4cf96fedf9b75bb330704828c187b190 Mon Sep 17 00:00:00 2001 From: Rolf Eike Beer Date: Sat, 10 Feb 2007 01:45:49 -0800 Subject: [PATCH] Add const for time{spec,val}_compare arguments The arguments are really const. Mark them const to allow these functions being called from places where the arguments are const without getting useless compiler warnings. Signed-off-by: Rolf Eike Beer Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/time.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/time.h b/include/linux/time.h index a5b739967b74..55cee172d723 100644 --- a/include/linux/time.h +++ b/include/linux/time.h @@ -46,7 +46,7 @@ static inline int timespec_equal(struct timespec *a, struct timespec *b) * lhs == rhs: return 0 * lhs > rhs: return >0 */ -static inline int timespec_compare(struct timespec *lhs, struct timespec *rhs) +static inline int timespec_compare(const struct timespec *lhs, const struct timespec *rhs) { if (lhs->tv_sec < rhs->tv_sec) return -1; @@ -55,7 +55,7 @@ static inline int timespec_compare(struct timespec *lhs, struct timespec *rhs) return lhs->tv_nsec - rhs->tv_nsec; } -static inline int timeval_compare(struct timeval *lhs, struct timeval *rhs) +static inline int timeval_compare(const struct timeval *lhs, const struct timeval *rhs) { if (lhs->tv_sec < rhs->tv_sec) return -1; -- cgit v1.2.3 From 72fd4a35a824331d7a0f4168d7576502d95d34b3 Mon Sep 17 00:00:00 2001 From: "Robert P. J. Day" Date: Sat, 10 Feb 2007 01:45:59 -0800 Subject: [PATCH] Numerous fixes to kernel-doc info in source files. A variety of (mostly) innocuous fixes to the embedded kernel-doc content in source files, including: * make multi-line initial descriptions single line * denote some function names, constants and structs as such * change erroneous opening '/*' to '/**' in a few places * reword some text for clarity Signed-off-by: Robert P. J. Day Cc: "Randy.Dunlap" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/init.h | 2 +- include/linux/kfifo.h | 6 +++--- include/linux/ktime.h | 6 +++--- include/linux/list.h | 11 ++++++----- 4 files changed, 13 insertions(+), 12 deletions(-) (limited to 'include/linux') diff --git a/include/linux/init.h b/include/linux/init.h index 5a593a1dec1e..c65f5107d512 100644 --- a/include/linux/init.h +++ b/include/linux/init.h @@ -172,7 +172,7 @@ void __init parse_early_param(void); * module_init() - driver initialization entry point * @x: function to be run at kernel boot time or module insertion * - * module_init() will either be called during do_initcalls (if + * module_init() will either be called during do_initcalls() (if * builtin) or at module insertion time (if a module). There can only * be one per module. */ diff --git a/include/linux/kfifo.h b/include/linux/kfifo.h index 48eccd865bd8..404f4464cb1a 100644 --- a/include/linux/kfifo.h +++ b/include/linux/kfifo.h @@ -74,7 +74,7 @@ static inline void kfifo_reset(struct kfifo *fifo) * @buffer: the data to be added. * @len: the length of the data to be added. * - * This function copies at most 'len' bytes from the 'buffer' into + * This function copies at most @len bytes from the @buffer into * the FIFO depending on the free space, and returns the number of * bytes copied. */ @@ -99,8 +99,8 @@ static inline unsigned int kfifo_put(struct kfifo *fifo, * @buffer: where the data must be copied. * @len: the size of the destination buffer. * - * This function copies at most 'len' bytes from the FIFO into the - * 'buffer' and returns the number of copied bytes. + * This function copies at most @len bytes from the FIFO into the + * @buffer and returns the number of copied bytes. */ static inline unsigned int kfifo_get(struct kfifo *fifo, unsigned char *buffer, unsigned int len) diff --git a/include/linux/ktime.h b/include/linux/ktime.h index 611f17f79eef..7444a6326231 100644 --- a/include/linux/ktime.h +++ b/include/linux/ktime.h @@ -163,7 +163,7 @@ static inline ktime_t ktime_sub(const ktime_t lhs, const ktime_t rhs) * @add1: addend1 * @add2: addend2 * - * Returns the sum of addend1 and addend2 + * Returns the sum of @add1 and @add2. */ static inline ktime_t ktime_add(const ktime_t add1, const ktime_t add2) { @@ -189,7 +189,7 @@ static inline ktime_t ktime_add(const ktime_t add1, const ktime_t add2) * @kt: addend * @nsec: the scalar nsec value to add * - * Returns the sum of kt and nsec in ktime_t format + * Returns the sum of @kt and @nsec in ktime_t format */ extern ktime_t ktime_add_ns(const ktime_t kt, u64 nsec); @@ -246,7 +246,7 @@ static inline struct timeval ktime_to_timeval(const ktime_t kt) * ktime_to_ns - convert a ktime_t variable to scalar nanoseconds * @kt: the ktime_t variable to convert * - * Returns the scalar nanoseconds representation of kt + * Returns the scalar nanoseconds representation of @kt */ static inline s64 ktime_to_ns(const ktime_t kt) { diff --git a/include/linux/list.h b/include/linux/list.h index cdc96559e5ae..f9d71eab05ee 100644 --- a/include/linux/list.h +++ b/include/linux/list.h @@ -161,7 +161,7 @@ static inline void __list_del(struct list_head * prev, struct list_head * next) /** * list_del - deletes entry from list. * @entry: the element to delete from the list. - * Note: list_empty on entry does not return true after this, the entry is + * Note: list_empty() on entry does not return true after this, the entry is * in an undefined state. */ #ifndef CONFIG_DEBUG_LIST @@ -179,7 +179,7 @@ extern void list_del(struct list_head *entry); * list_del_rcu - deletes entry from list without re-initialization * @entry: the element to delete from the list. * - * Note: list_empty on entry does not return true after this, + * Note: list_empty() on entry does not return true after this, * the entry is in an undefined state. It is useful for RCU based * lockfree traversal. * @@ -209,7 +209,8 @@ static inline void list_del_rcu(struct list_head *entry) * list_replace - replace old entry by new one * @old : the element to be replaced * @new : the new element to insert - * Note: if 'old' was empty, it will be overwritten. + * + * If @old was empty, it will be overwritten. */ static inline void list_replace(struct list_head *old, struct list_head *new) @@ -488,12 +489,12 @@ static inline void list_splice_init_rcu(struct list_head *list, pos = list_entry(pos->member.prev, typeof(*pos), member)) /** - * list_prepare_entry - prepare a pos entry for use in list_for_each_entry_continue + * list_prepare_entry - prepare a pos entry for use in list_for_each_entry_continue() * @pos: the type * to use as a start point * @head: the head of the list * @member: the name of the list_struct within the struct. * - * Prepares a pos entry for use as a start point in list_for_each_entry_continue. + * Prepares a pos entry for use as a start point in list_for_each_entry_continue(). */ #define list_prepare_entry(pos, head, member) \ ((pos) ? : list_entry(head, typeof(*pos), member)) -- cgit v1.2.3 From d4d23add3abcd18d8021b99f230df608ccb2f007 Mon Sep 17 00:00:00 2001 From: Kyle McMartin Date: Sat, 10 Feb 2007 01:46:00 -0800 Subject: [PATCH] Common compat_sys_sysinfo I noticed that almost all architectures implemented exactly the same sys32_sysinfo... except parisc, where a bug was to be found in handling of the uptime. So let's remove a whole whack of code for fun and profit. Cribbed compat_sys_sysinfo from x86_64's implementation, since I figured it would be the best tested. This patch incorporates Arnd's suggestion of not using set_fs/get_fs, but instead extracting out the common code from sys_sysinfo. Cc: Christoph Hellwig Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/kernel.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/kernel.h b/include/linux/kernel.h index e1a429ada97f..7e861303cbde 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -313,6 +313,9 @@ static inline int __attribute__ ((format (printf, 1, 2))) pr_debug(const char * (void)__tmp; \ }) +struct sysinfo; +extern int do_sysinfo(struct sysinfo *info); + #endif /* __KERNEL__ */ #define SI_LOAD_SHIFT 16 -- cgit v1.2.3 From 7be2c7c96aff2871240d61fef508c41176c688b5 Mon Sep 17 00:00:00 2001 From: David Brownell Date: Sat, 10 Feb 2007 01:46:02 -0800 Subject: [PATCH] RTC framework driver for CMOS RTCs This is an "RTC framework" driver for the "CMOS" RTCs which are standard on PCs and some other platforms. That's MC146818 compatible silicon. Advantages of this vs. drivers/char/rtc.c (use one _or_ the other, only one will be able to claim the RTC irq) include: - This leverages both the new RTC framework and the driver model; both PNPACPI and platform device modes are supported. (A separate patch creates a platform device on PCs where PNPACPI isn't configured.) - It supports common extensions like longer alarms. (A separate patch exports that information from ACPI through platform_data.) - Likewise, system wakeup events use "real driver model support", with policy control via sysfs "wakeup" attributes and and using normal rtc ioctls to manage wakeup. (Patch in the works. The ACPI hooks are known; /proc/acpi/alarm can vanish. Making it work with EFI will be a minor challenge to someone with e.g. a MiniMac.) It's not yet been tested on non-x86 systems, without ACPI, or with HPET. And the RTC framework will surely have teething pains on "mainstream" PC-based systems (though must embedded Linux systems use it heavily), not limited to sorting out the "/dev/rtc0" issue (udev easily tweaked). Also, the ALSA rtctimer code doesn't use the new RTC API. Otherwise, this should be a no-known-regressions replacement for the old drivers/char/rtc.c driver, and should help the non-embedded distros (and the new timekeeping code) start to switch to the framework. Note also that any systems using "rtc-m48t86" are candidates to switch over to this more functional driver; the platform data is different, and the way bytes are read is different, but otherwise those chips should be compatible. [akpm@osdl.org: sparc32 fix] [akpm@osdl.org: sparc64 fix] Signed-off-by: David Brownell Cc: Woody Suwalski Cc: Alessandro Zummo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mc146818rtc.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mc146818rtc.h b/include/linux/mc146818rtc.h index 432b2fa24929..bdc01127dced 100644 --- a/include/linux/mc146818rtc.h +++ b/include/linux/mc146818rtc.h @@ -18,6 +18,16 @@ #ifdef __KERNEL__ #include /* spinlock_t */ extern spinlock_t rtc_lock; /* serialize CMOS RAM access */ + +/* Some RTCs extend the mc146818 register set to support alarms of more + * than 24 hours in the future; or dates that include a century code. + * This platform_data structure can pass this information to the driver. + */ +struct cmos_rtc_board_info { + u8 rtc_day_alarm; /* zero, or register index */ + u8 rtc_mon_alarm; /* zero, or register index */ + u8 rtc_century; /* zero, or register index */ +}; #endif /********************************************************************** -- cgit v1.2.3 From 482120084d843d4cbb7ff3eb84510a1471130ce0 Mon Sep 17 00:00:00 2001 From: Thomas Hoehn Date: Sat, 10 Feb 2007 01:46:05 -0800 Subject: [PATCH] Perle multimodem card (PCI-RAS) detection Get the Perle quad-modem PCI card (PCI-RAS4) detected by serial driver. It may also get the PCI-RAS8 running, but can't guarantee as I didn't had one for testing. Signed-off-by: Thomas Hoehn Cc: Russell King Cc: Alan Cox Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- 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 e5e5b9ffcfb5..d655378f1c63 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -959,6 +959,7 @@ #define PCI_DEVICE_ID_PLX_R753 0x1152 #define PCI_DEVICE_ID_PLX_OLITEC 0x1187 #define PCI_DEVICE_ID_PLX_PCI200SYN 0x3196 +#define PCI_DEVICE_ID_PLX_9030 0x9030 #define PCI_DEVICE_ID_PLX_9050 0x9050 #define PCI_DEVICE_ID_PLX_9080 0x9080 #define PCI_DEVICE_ID_PLX_GTEK_SERIAL2 0xa001 @@ -1994,6 +1995,10 @@ #define PCI_VENDOR_ID_CHELSIO 0x1425 +#define PCI_SUBVENDOR_ID_PERLE 0x155f +#define PCI_SUBDEVICE_ID_PCI_RAS4 0xf001 +#define PCI_SUBDEVICE_ID_PCI_RAS8 0xf010 + #define PCI_VENDOR_ID_SYBA 0x1592 #define PCI_DEVICE_ID_SYBA_2P_EPP 0x0782 -- cgit v1.2.3 From a9cccd34372f7075e8746395609bc78f0fbaf204 Mon Sep 17 00:00:00 2001 From: Matthias Fuchs Date: Sat, 10 Feb 2007 01:46:05 -0800 Subject: [PATCH] serial: support for new board Add support for the CPCI-ASIO4 quad port CompactPCI UART board from electronic system design gmbh. Signed-off-by: Matthias Fuchs Cc: Russell King 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 d655378f1c63..8fb9c3e06eef 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -1697,6 +1697,8 @@ #define PCI_VENDOR_ID_ELECTRONICDESIGNGMBH 0x12f8 #define PCI_DEVICE_ID_LML_33R10 0x8a02 +#define PCI_VENDOR_ID_ESDGMBH 0x12fe +#define PCI_DEVICE_ID_ESDGMBH_CPCIASIO4 0x0111 #define PCI_VENDOR_ID_SIIG 0x131f #define PCI_SUBVENDOR_ID_SIIG 0x131f -- cgit v1.2.3 From bfb58478fe2f8cbbb776d910ff3549515e3c8f4f Mon Sep 17 00:00:00 2001 From: Adrian Bunk Date: Sat, 10 Feb 2007 01:46:06 -0800 Subject: [PATCH] cleanup linux/byteorder/swabb.h - no longer a userspace header - add #include for in-kernel compilation Signed-off-by: Adrian Bunk Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/byteorder/Kbuild | 1 - include/linux/byteorder/swabb.h | 13 ++++--------- 2 files changed, 4 insertions(+), 10 deletions(-) (limited to 'include/linux') diff --git a/include/linux/byteorder/Kbuild b/include/linux/byteorder/Kbuild index d39dc0f7c67e..79bedddfd9ca 100644 --- a/include/linux/byteorder/Kbuild +++ b/include/linux/byteorder/Kbuild @@ -2,5 +2,4 @@ header-y += big_endian.h header-y += little_endian.h unifdef-y += generic.h -unifdef-y += swabb.h unifdef-y += swab.h diff --git a/include/linux/byteorder/swabb.h b/include/linux/byteorder/swabb.h index ae5e5f914bf4..8c780c7d779e 100644 --- a/include/linux/byteorder/swabb.h +++ b/include/linux/byteorder/swabb.h @@ -25,6 +25,8 @@ * */ +#include + #define ___swahw32(x) \ ({ \ __u32 __x = (x); \ @@ -77,19 +79,14 @@ /* * Allow constant folding */ -#if defined(__GNUC__) && defined(__OPTIMIZE__) -# define __swahw32(x) \ +#define __swahw32(x) \ (__builtin_constant_p((__u32)(x)) ? \ ___swahw32((x)) : \ __fswahw32((x))) -# define __swahb32(x) \ +#define __swahb32(x) \ (__builtin_constant_p((__u32)(x)) ? \ ___swahb32((x)) : \ __fswahb32((x))) -#else -# define __swahw32(x) __fswahw32(x) -# define __swahb32(x) __fswahb32(x) -#endif /* OPTIMIZE */ static inline __u32 __fswahw32(__u32 x) @@ -128,13 +125,11 @@ static inline void __swahb32s(__u32 *addr) */ #endif /* __BYTEORDER_HAS_U64__ */ -#if defined(__KERNEL__) #define swahw32 __swahw32 #define swahb32 __swahb32 #define swahw32p __swahw32p #define swahb32p __swahb32p #define swahw32s __swahw32s #define swahb32s __swahb32s -#endif #endif /* _LINUX_BYTEORDER_SWABB_H */ -- cgit v1.2.3 From e3e8a75d2acfc61ebf25524666a0a2c6abb0620c Mon Sep 17 00:00:00 2001 From: Kirill Korotaev Date: Sat, 10 Feb 2007 01:46:19 -0800 Subject: [PATCH] Extract and use wake_up_klogd() Remove hack with printing space to wake up klogd. Use explicit wake_up_klogd(). See earlier discussion http://groups.google.com/group/fa.linux.kernel/browse_frm/thread/75f496668409f58d/1a8f28983a51e1ff?lnk=st&q=wake_up_klogd+group%3Afa.linux.kernel&rnum=2#1a8f28983a51e1ff Signed-off-by: Alexey Dobriyan Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- 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 7e861303cbde..e91dce75bbcc 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -176,6 +176,7 @@ static inline void console_verbose(void) } extern void bust_spinlocks(int yes); +extern void wake_up_klogd(void); extern int oops_in_progress; /* If set, an oops, panic(), BUG() or die() is in progress */ extern int panic_timeout; extern int panic_on_oops; -- cgit v1.2.3 From 82ddcb040570411fc2d421d96b3e69711c670328 Mon Sep 17 00:00:00 2001 From: "Robert P. J. Day" Date: Sat, 10 Feb 2007 01:46:20 -0800 Subject: [PATCH] extend the set of "__attribute__" shortcut macros Extend the set of "__attribute__" shortcut macros, and remove identical (and now superfluous) definitions from a couple of source files. based on a page at robert love's blog: http://rlove.org/log/2005102601 extend the set of shortcut macros defined in compiler-gcc.h with the following: #define __packed __attribute__((packed)) #define __weak __attribute__((weak)) #define __naked __attribute__((naked)) #define __noreturn __attribute__((noreturn)) #define __pure __attribute__((pure)) #define __aligned(x) __attribute__((aligned(x))) #define __printf(a,b) __attribute__((format(printf,a,b))) Once these are in place, it's up to subsystem maintainers to decide if they want to take advantage of them. there is already a strong precedent for using shortcuts like this in the source tree. The ones that might give people pause are "__aligned" and "__printf", but shortcuts for both of those are already in use, and in some ways very confusingly. note the two very different definitions for a macro named "ALIGNED": drivers/net/sgiseeq.c:#define ALIGNED(x) ((((unsigned long)(x)) + 0xf) & ~(0xf)) drivers/scsi/ultrastor.c:#define ALIGNED(x) __attribute__((aligned(x))) also: include/acpi/platform/acgcc.h: #define ACPI_PRINTF_LIKE(c) __attribute__ ((__format__ (__printf__, c, c+1))) Given the precedent, then, it seems logical to at least standardize on a consistent set of these macros. Signed-off-by: Robert P. J. Day Acked-by: Ralf Baechle Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/compiler-gcc.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h index 6e1c44a935d4..9008eabb9c3d 100644 --- a/include/linux/compiler-gcc.h +++ b/include/linux/compiler-gcc.h @@ -27,6 +27,13 @@ #define __inline__ __inline__ __attribute__((always_inline)) #define __inline __inline __attribute__((always_inline)) #define __deprecated __attribute__((deprecated)) +#define __packed __attribute__((packed)) +#define __weak __attribute__((weak)) +#define __naked __attribute__((naked)) +#define __noreturn __attribute__((noreturn)) +#define __pure __attribute__((pure)) +#define __aligned(x) __attribute__((aligned(x))) +#define __printf(a,b) __attribute__((format(printf,a,b))) #define noinline __attribute__((noinline)) #define __attribute_pure__ __attribute__((pure)) #define __attribute_const__ __attribute__((__const__)) -- cgit v1.2.3 From 5b0a2075adb04846870a7fc1e62b08a532054ba6 Mon Sep 17 00:00:00 2001 From: Adrian Bunk Date: Sat, 10 Feb 2007 01:46:24 -0800 Subject: [PATCH] cleanup include/linux/xattr.h - reduce the userspace visible part - fix the in-kernel compilation Signed-off-by: Adrian Bunk Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/Kbuild | 2 +- include/linux/xattr.h | 8 ++++++++ 2 files changed, 9 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/Kbuild b/include/linux/Kbuild index 683513e310de..bb881c3219fa 100644 --- a/include/linux/Kbuild +++ b/include/linux/Kbuild @@ -156,7 +156,6 @@ header-y += video_encoder.h header-y += videotext.h header-y += vt.h header-y += wireless.h -header-y += xattr.h header-y += x25.h unifdef-y += acct.h @@ -336,6 +335,7 @@ unifdef-y += wait.h unifdef-y += wanrouter.h unifdef-y += watchdog.h unifdef-y += wireless.h +unifdef-y += xattr.h unifdef-y += xfrm.h objhdr-y += version.h diff --git a/include/linux/xattr.h b/include/linux/xattr.h index 0e7f1e20ea45..def131a5ac70 100644 --- a/include/linux/xattr.h +++ b/include/linux/xattr.h @@ -13,6 +13,10 @@ #define XATTR_CREATE 0x1 /* set value, fail if attr already exists */ #define XATTR_REPLACE 0x2 /* set value, fail if attr does not exist */ +#ifdef __KERNEL__ + +#include + /* Namespaces */ #define XATTR_OS2_PREFIX "os2." #define XATTR_OS2_PREFIX_LEN (sizeof (XATTR_OS2_PREFIX) - 1) @@ -29,6 +33,8 @@ #define XATTR_USER_PREFIX "user." #define XATTR_USER_PREFIX_LEN (sizeof (XATTR_USER_PREFIX) - 1) +struct inode; +struct dentry; struct xattr_handler { char *prefix; @@ -50,4 +56,6 @@ ssize_t generic_listxattr(struct dentry *dentry, char *buffer, size_t buffer_siz int generic_setxattr(struct dentry *dentry, const char *name, const void *value, size_t size, int flags); int generic_removexattr(struct dentry *dentry, const char *name); +#endif /* __KERNEL__ */ + #endif /* _LINUX_XATTR_H */ -- cgit v1.2.3 From 521dae191e5ba9362152da9fd3a12203e087df83 Mon Sep 17 00:00:00 2001 From: Adrian Bunk Date: Sat, 10 Feb 2007 01:46:24 -0800 Subject: [PATCH] cleanup include/linux/reiserfs_xattr.h - #ifdef guard this header for multiple inclusion - adjust the #include's to what is actually required by this header - remove an unneeded #ifdef - #endif comments Signed-off-by: Adrian Bunk Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/reiserfs_xattr.h | 24 +++++++++++++++++++----- 1 file changed, 19 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/reiserfs_xattr.h b/include/linux/reiserfs_xattr.h index 966c35851b2e..66a96814d614 100644 --- a/include/linux/reiserfs_xattr.h +++ b/include/linux/reiserfs_xattr.h @@ -2,7 +2,10 @@ File: linux/reiserfs_xattr.h */ -#include +#ifndef _LINUX_REISERFS_XATTR_H +#define _LINUX_REISERFS_XATTR_H + +#include /* Magic value in header */ #define REISERFS_XATTR_MAGIC 0x52465841 /* "RFXA" */ @@ -13,7 +16,18 @@ struct reiserfs_xattr_header { }; #ifdef __KERNEL__ + #include +#include +#include +#include +#include + +struct inode; +struct dentry; +struct iattr; +struct super_block; +struct nameidata; struct reiserfs_xattr_handler { char *prefix; @@ -49,9 +63,7 @@ int reiserfs_xattr_set(struct inode *, const char *, const void *, size_t, int); extern struct reiserfs_xattr_handler user_handler; extern struct reiserfs_xattr_handler trusted_handler; -#ifdef CONFIG_REISERFS_FS_SECURITY extern struct reiserfs_xattr_handler security_handler; -#endif int reiserfs_xattr_register_handlers(void) __init; void reiserfs_xattr_unregister_handlers(void); @@ -137,6 +149,8 @@ static inline int reiserfs_xattr_init(struct super_block *sb, int mount_flags) static inline void reiserfs_init_xattr_rwsem(struct inode *inode) { } -#endif +#endif /* CONFIG_REISERFS_FS_XATTR */ + +#endif /* __KERNEL__ */ -#endif /* __KERNEL__ */ +#endif /* _LINUX_REISERFS_XATTR_H */ -- cgit v1.2.3 From b385a144ee790f00e8559bcb8024d042863f9be1 Mon Sep 17 00:00:00 2001 From: "Robert P. J. Day" Date: Sat, 10 Feb 2007 01:46:25 -0800 Subject: [PATCH] Replace regular code with appropriate calls to container_of() Replace a small number of expressions with a call to the "container_of()" macro. Signed-off-by: Robert P. J. Day Acked-by: Paul Mackerras Cc: "David S. Miller" Cc: Martin Schwidefsky Cc: Stephen Smalley Cc: James Morris Signed-off-by: Andrew Morton 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 83cdefae9931..c554f60f18e4 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -492,7 +492,7 @@ struct request_sock; * Note that the fown_struct, @fown, is never outside the context of a * struct file, so the file structure (and associated security information) * can always be obtained: - * (struct file *)((long)fown - offsetof(struct file,f_owner)); + * container_of(fown, struct file, f_owner) * @tsk contains the structure of task receiving signal. * @fown contains the file owner information. * @sig is the signal that will be sent. When 0, kernel sends SIGIO. -- cgit v1.2.3 From c75fb88dbcc470e6041a20b1457b4835b9a0a48a Mon Sep 17 00:00:00 2001 From: Pavel Roskin Date: Sat, 10 Feb 2007 01:46:37 -0800 Subject: [PATCH] Fix sparse annotation of spin unlock macros in one case SMP systems without premption and spinlock debugging enabled use unlock macros that don't tell sparse that the lock is being released. Add sparse annotations in this case. Signed-off-by: Pavel Roskin Acked-by: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/spinlock.h | 33 ++++++++++++++++++++++++--------- 1 file changed, 24 insertions(+), 9 deletions(-) (limited to 'include/linux') diff --git a/include/linux/spinlock.h b/include/linux/spinlock.h index 94b767d64275..61fef376ed2e 100644 --- a/include/linux/spinlock.h +++ b/include/linux/spinlock.h @@ -228,15 +228,30 @@ do { \ # define read_unlock_irq(lock) _read_unlock_irq(lock) # define write_unlock_irq(lock) _write_unlock_irq(lock) #else -# define spin_unlock(lock) __raw_spin_unlock(&(lock)->raw_lock) -# define read_unlock(lock) __raw_read_unlock(&(lock)->raw_lock) -# define write_unlock(lock) __raw_write_unlock(&(lock)->raw_lock) -# define spin_unlock_irq(lock) \ - do { __raw_spin_unlock(&(lock)->raw_lock); local_irq_enable(); } while (0) -# define read_unlock_irq(lock) \ - do { __raw_read_unlock(&(lock)->raw_lock); local_irq_enable(); } while (0) -# define write_unlock_irq(lock) \ - do { __raw_write_unlock(&(lock)->raw_lock); local_irq_enable(); } while (0) +# define spin_unlock(lock) \ + do {__raw_spin_unlock(&(lock)->raw_lock); __release(lock); } while (0) +# define read_unlock(lock) \ + do {__raw_read_unlock(&(lock)->raw_lock); __release(lock); } while (0) +# define write_unlock(lock) \ + do {__raw_write_unlock(&(lock)->raw_lock); __release(lock); } while (0) +# define spin_unlock_irq(lock) \ +do { \ + __raw_spin_unlock(&(lock)->raw_lock); \ + __release(lock); \ + local_irq_enable(); \ +} while (0) +# define read_unlock_irq(lock) \ +do { \ + __raw_read_unlock(&(lock)->raw_lock); \ + __release(lock); \ + local_irq_enable(); \ +} while (0) +# define write_unlock_irq(lock) \ +do { \ + __raw_write_unlock(&(lock)->raw_lock); \ + __release(lock); \ + local_irq_enable(); \ +} while (0) #endif #define spin_unlock_irqrestore(lock, flags) \ -- cgit v1.2.3 From 4b98d11b40f03382918796f3c5c936d5495d20a4 Mon Sep 17 00:00:00 2001 From: Alexey Dobriyan Date: Sat, 10 Feb 2007 01:46:45 -0800 Subject: [PATCH] ifdef ->rchar, ->wchar, ->syscr, ->syscw from task_struct They are fat: 4x8 bytes in task_struct. They are uncoditionally updated in every fork, read, write and sendfile. They are used only if you have some "extended acct fields feature". And please, please, please, read(2) knows about bytes, not characters, why it is called "rchar"? Signed-off-by: Alexey Dobriyan Cc: Jay Lan Cc: Balbir Singh Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/sched.h | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index 446373535190..76c8e2dc48dd 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1013,8 +1013,10 @@ struct task_struct { * to a stack based synchronous wait) if its doing sync IO. */ wait_queue_t *io_wait; +#ifdef CONFIG_TASK_XACCT /* i/o counters(bytes read/written, #syscalls */ u64 rchar, wchar, syscr, syscw; +#endif struct task_io_accounting ioac; #if defined(CONFIG_TASK_XACCT) u64 acct_rss_mem1; /* accumulated rss usage */ @@ -1649,6 +1651,44 @@ extern int sched_create_sysfs_power_savings_entries(struct sysdev_class *cls); extern void normalize_rt_tasks(void); +#ifdef CONFIG_TASK_XACCT +static inline void add_rchar(struct task_struct *tsk, ssize_t amt) +{ + tsk->rchar += amt; +} + +static inline void add_wchar(struct task_struct *tsk, ssize_t amt) +{ + tsk->wchar += amt; +} + +static inline void inc_syscr(struct task_struct *tsk) +{ + tsk->syscr++; +} + +static inline void inc_syscw(struct task_struct *tsk) +{ + tsk->syscw++; +} +#else +static inline void add_rchar(struct task_struct *tsk, ssize_t amt) +{ +} + +static inline void add_wchar(struct task_struct *tsk, ssize_t amt) +{ +} + +static inline void inc_syscr(struct task_struct *tsk) +{ +} + +static inline void inc_syscw(struct task_struct *tsk) +{ +} +#endif + #endif /* __KERNEL__ */ #endif -- cgit v1.2.3 From c70555b051f2a32bf94a7e1c75b6b6759031b989 Mon Sep 17 00:00:00 2001 From: Alexandre Bounine Date: Sat, 10 Feb 2007 01:46:47 -0800 Subject: [PATCH] rapidio: fix multi-switch enumeration This patch contains two fixes for RapisIO enumeration logic: 1. Fix enumeration in configurations with multiple switches. The patch adds: a. Enumeration of an empty switch. Empty switch is a switch that does not have any endpoint devices attached to it (except host device or previous switch in a chain). New code assigns a phony destination ID associated with the switch and sets up corresponding routes. b. Adds a second pass to the enumeration to setup routes to devices discovered after switch was scanned. 2. Fix enumeration failure when riohdid parameter has non-zero value. Current version fails to setup response path to the host when it has destination ID other that 0. Signed-off-by: Alexandre Bounine Acked-by: Matt Porter 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 d93857056cb9..68e3f6853fa6 100644 --- a/include/linux/rio.h +++ b/include/linux/rio.h @@ -25,6 +25,7 @@ #define RIO_ANY_DESTID 0xff #define RIO_NO_HOPCOUNT -1 +#define RIO_INVALID_DESTID 0xffff #define RIO_MAX_MPORT_RESOURCES 16 #define RIO_MAX_DEV_RESOURCES 16 -- cgit v1.2.3 From d88e661fb9d28f1de799d524a8625b35eee94bbb Mon Sep 17 00:00:00 2001 From: Al Viro Date: Fri, 9 Feb 2007 18:13:42 +0000 Subject: [PATCH] fix misannotation of linkinfo_dn Signed-off-by: Al Viro Signed-off-by: Linus Torvalds --- include/linux/dn.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/dn.h b/include/linux/dn.h index 10b6a6fd5837..02bba040fcfb 100644 --- a/include/linux/dn.h +++ b/include/linux/dn.h @@ -113,7 +113,7 @@ struct accessdata_dn * DECnet logical link information structure */ struct linkinfo_dn { - __le16 idn_segsize; /* Segment size for link */ + __u16 idn_segsize; /* Segment size for link */ __u8 idn_linkstate; /* Logical link state */ }; -- cgit v1.2.3 From 5ea8176994003483a18c8fed580901e2125f8a83 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 11 Feb 2007 15:41:31 +0000 Subject: [PATCH] sort the devres mess out * Split the implementation-agnostic stuff in separate files. * Make sure that targets using non-default request_irq() pull kernel/irq/devres.o * Introduce new symbols (HAS_IOPORT and HAS_IOMEM) defaulting to positive; allow architectures to turn them off (we needed these symbols anyway for dependencies of quite a few drivers). * protect the ioport-related parts of lib/devres.o with CONFIG_HAS_IOPORT. Signed-off-by: Al Viro Signed-off-by: Linus Torvalds --- include/linux/io.h | 6 ------ include/linux/pci.h | 5 +++++ 2 files changed, 5 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/io.h b/include/linux/io.h index 9e419ebfc98b..c244a0cc9319 100644 --- a/include/linux/io.h +++ b/include/linux/io.h @@ -43,12 +43,6 @@ void __iomem * devm_ioremap_nocache(struct device *dev, unsigned long offset, unsigned long size); void devm_iounmap(struct device *dev, void __iomem *addr); -void __iomem * pcim_iomap(struct pci_dev *pdev, int bar, unsigned long maxlen); -void pcim_iounmap(struct pci_dev *pdev, void __iomem *addr); -void __iomem * const * pcim_iomap_table(struct pci_dev *pdev); - -int pcim_iomap_regions(struct pci_dev *pdev, u16 mask, const char *name); - /** * check_signature - find BIOS signatures * @io_addr: mmio address to check diff --git a/include/linux/pci.h b/include/linux/pci.h index 9e3042e7e1cc..98c8765a488e 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -840,6 +840,11 @@ enum pci_fixup_pass { void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev); +void __iomem * pcim_iomap(struct pci_dev *pdev, int bar, unsigned long maxlen); +void pcim_iounmap(struct pci_dev *pdev, void __iomem *addr); +void __iomem * const * pcim_iomap_table(struct pci_dev *pdev); +int pcim_iomap_regions(struct pci_dev *pdev, u16 mask, const char *name); + extern int pci_pci_problems; #define PCIPCI_FAIL 1 /* No PCI PCI DMA */ #define PCIPCI_TRITON 2 -- cgit v1.2.3 From aaf1228ddfb44f04c87d1e7dfc5ccffdba74363d Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Fri, 19 Jan 2007 11:30:16 +1100 Subject: cfq-iosched: remove cfq_io_context last_queue It hasn't been used for a while, kill it off and remove the old if 0 code chunk. Signed-off-by: Jens Axboe --- include/linux/blkdev.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 36a6eacefe20..83dcd8c0e974 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -82,7 +82,6 @@ struct cfq_io_context { unsigned long last_end_request; sector_t last_request_pos; - unsigned long last_queue; unsigned long ttime_total; unsigned long ttime_samples; -- cgit v1.2.3 From e0dc0d8f4a327d033bfb63d43f113d5f31d11b3c Mon Sep 17 00:00:00 2001 From: Nick Piggin Date: Mon, 12 Feb 2007 00:51:36 -0800 Subject: [PATCH] add vm_insert_pfn() Add a vm_insert_pfn helper, so that ->fault handlers can have nopfn functionality by installing their own pte and returning NULL. Signed-off-by: Nick Piggin Signed-off-by: Benjamin Herrenschmidt Cc: Arnd Bergmann Cc: Hugh Dickins Cc: Christoph Hellwig Signed-off-by: Andrew Morton 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 77a76101dcd9..903f3b71f4a7 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1124,6 +1124,8 @@ unsigned long vmalloc_to_pfn(void *addr); int remap_pfn_range(struct vm_area_struct *, unsigned long addr, unsigned long pfn, unsigned long size, pgprot_t); int vm_insert_page(struct vm_area_struct *, unsigned long addr, struct page *); +int vm_insert_pfn(struct vm_area_struct *vma, unsigned long addr, + unsigned long pfn); struct page *follow_page(struct vm_area_struct *, unsigned long address, unsigned int foll_flags); -- cgit v1.2.3 From 22cd25ed31bbf849acaa06ab220dc4f526153f13 Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Mon, 12 Feb 2007 00:51:38 -0800 Subject: [PATCH] Add NOPFN_REFAULT result from vm_ops->nopfn() Add a NOPFN_REFAULT return code for vm_ops->nopfn() equivalent to NOPAGE_REFAULT for vmops->nopage() indicating that the handler requests a re-execution of the faulting instruction Signed-off-by: Benjamin Herrenschmidt Cc: Arnd Bergmann Cc: Hugh Dickins Cc: Christoph Hellwig 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 903f3b71f4a7..a0eec16eb0bd 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -637,6 +637,7 @@ static inline int page_mapped(struct page *page) */ #define NOPFN_SIGBUS ((unsigned long) -1) #define NOPFN_OOM ((unsigned long) -2) +#define NOPFN_REFAULT ((unsigned long) -3) /* * Different kinds of faults, as returned by handle_mm_fault(). -- cgit v1.2.3 From 33a266dda9fbbe72dd978a451a8ee33c59da5e9c Mon Sep 17 00:00:00 2001 From: David Chinner Date: Mon, 12 Feb 2007 00:51:41 -0800 Subject: [PATCH] Make BH_Unwritten a first class bufferhead flag V2 Currently, XFS uses BH_PrivateStart for flagging unwritten extent state in a bufferhead. Recently, I found the long standing mmap/unwritten extent conversion bug, and it was to do with partial page invalidation not clearing the unwritten flag from bufferheads attached to the page but beyond EOF. See here for a full explaination: http://oss.sgi.com/archives/xfs/2006-12/msg00196.html The solution I have checked into the XFS dev tree involves duplicating code from block_invalidatepage to clear the unwritten flag from the bufferhead(s), and then calling block_invalidatepage() to do the rest. Christoph suggested that this would be better solved by pushing the unwritten flag into the common buffer head flags and just adding the call to discard_buffer(): http://oss.sgi.com/archives/xfs/2006-12/msg00239.html The following patch makes BH_Unwritten a first class citizen. Signed-off-by: Dave Chinner Acked-by: Christoph Hellwig Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/buffer_head.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/buffer_head.h b/include/linux/buffer_head.h index 5d9fb0e94156..ffbdb6621f52 100644 --- a/include/linux/buffer_head.h +++ b/include/linux/buffer_head.h @@ -34,6 +34,7 @@ enum bh_state_bits { BH_Write_EIO, /* I/O error on write */ BH_Ordered, /* ordered write */ BH_Eopnotsupp, /* operation not supported (barrier) */ + BH_Unwritten, /* Buffer is allocated on disk but not written */ BH_PrivateStart,/* not a state bit, but the first bit available * for private allocation by other entities @@ -126,6 +127,7 @@ BUFFER_FNS(Boundary, boundary) BUFFER_FNS(Write_EIO, write_io_error) BUFFER_FNS(Ordered, ordered) BUFFER_FNS(Eopnotsupp, eopnotsupp) +BUFFER_FNS(Unwritten, unwritten) #define bh_offset(bh) ((unsigned long)(bh)->b_data & ~PAGE_MASK) #define touch_buffer(bh) mark_page_accessed(bh->b_page) -- cgit v1.2.3 From 5be02f1d8af4c7baf3a5a31ab9c0cba9fdc52680 Mon Sep 17 00:00:00 2001 From: Richard Knutsson Date: Mon, 12 Feb 2007 00:51:50 -0800 Subject: [PATCH] include/linux/kernel.h: Remove labs() Remove labs() since it is not used/needed. Signed-off-by: Richard Knutsson Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/kernel.h | 5 ----- 1 file changed, 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/kernel.h b/include/linux/kernel.h index e91dce75bbcc..3531764318f2 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -92,11 +92,6 @@ extern int cond_resched(void); (__x < 0) ? -__x : __x; \ }) -#define labs(x) ({ \ - long __x = (x); \ - (__x < 0) ? -__x : __x; \ - }) - extern struct atomic_notifier_head panic_notifier_list; extern long (*panic_blink)(long time); NORET_TYPE void panic(const char * fmt, ...) -- cgit v1.2.3 From ae4472aa03d38b11f334dc0030b82e0c9f249af9 Mon Sep 17 00:00:00 2001 From: "Robert P. J. Day" Date: Mon, 12 Feb 2007 00:51:52 -0800 Subject: [PATCH] QUOTA: Have include explicitly Since quota.h declares a R/W semaphore, it should include rwsem.h explicitly. Signed-off-by: Robert P. J. Day Acked-by: Jan Kara Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/quota.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/quota.h b/include/linux/quota.h index b8fbf26eb885..77db80a953d6 100644 --- a/include/linux/quota.h +++ b/include/linux/quota.h @@ -132,6 +132,7 @@ struct if_dqinfo { #ifdef __KERNEL__ #include +#include #include #include -- cgit v1.2.3 From fb58b7316a99703afb8d076b0e5f3e1e387e4b30 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Mon, 12 Feb 2007 00:51:57 -0800 Subject: [PATCH] move remove_dquot_ref to dqout.c Remove_dquot_ref can move to dqout.c instead of beeing in inode.c under #ifdef CONFIG_QUOTA. Also clean the resulting code up a tiny little bit by testing sb->dq_op earlier - it's constant over a filesystems lifetime. Signed-off-by: Christoph Hellwig Cc: Jan Kara Signed-off-by: Andrew Morton 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 20fd1619ccfb..990adcbc0df2 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1688,7 +1688,6 @@ extern struct inode *new_inode(struct super_block *); extern int __remove_suid(struct dentry *, int); extern int should_remove_suid(struct dentry *); extern int remove_suid(struct dentry *); -extern void remove_dquot_ref(struct super_block *, int, struct list_head *); extern void __insert_inode_hash(struct inode *, unsigned long hashval); extern void remove_inode_hash(struct inode *); -- cgit v1.2.3 From 3991d3bd1506391d8feec209b1d22ccb1c03a0bf Mon Sep 17 00:00:00 2001 From: Tomasz Kvarsin Date: Mon, 12 Feb 2007 00:52:14 -0800 Subject: [PATCH] warning fix: unsigned->signed While compiling my code with -Wconversion using gcc-trunk, I always get a bunch of warrning from headers, here is fix for them: __getblk is alawys called with unsigned argument, but it takes signed, the same story with __bread,__breadahead and so on. Signed-off-by: Tomasz Kvarsin Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/buffer_head.h | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/buffer_head.h b/include/linux/buffer_head.h index ffbdb6621f52..dd27b1c7227f 100644 --- a/include/linux/buffer_head.h +++ b/include/linux/buffer_head.h @@ -174,12 +174,14 @@ struct super_block *freeze_bdev(struct block_device *); void thaw_bdev(struct block_device *, struct super_block *); int fsync_super(struct super_block *); int fsync_no_super(struct block_device *); -struct buffer_head *__find_get_block(struct block_device *, sector_t, int); -struct buffer_head * __getblk(struct block_device *, sector_t, int); +struct buffer_head *__find_get_block(struct block_device *bdev, sector_t block, + unsigned size); +struct buffer_head *__getblk(struct block_device *bdev, sector_t block, + unsigned size); void __brelse(struct buffer_head *); void __bforget(struct buffer_head *); -void __breadahead(struct block_device *, sector_t block, int size); -struct buffer_head *__bread(struct block_device *, sector_t block, int size); +void __breadahead(struct block_device *, sector_t block, unsigned int size); +struct buffer_head *__bread(struct block_device *, sector_t block, unsigned size); struct buffer_head *alloc_buffer_head(gfp_t gfp_flags); void free_buffer_head(struct buffer_head * bh); void FASTCALL(unlock_buffer(struct buffer_head *bh)); -- cgit v1.2.3 From a1e96b0310d70b72012b5ecde5e97b8262785aae Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Mon, 12 Feb 2007 00:52:20 -0800 Subject: [PATCH] lockdep: forward declare struct task_struct 3117df0453828bd045c16244e6f50e5714667a8a causes this: In file included from arch/s390/kernel/early.c:13: include/linux/lockdep.h:300: warning: "struct task_struct" declared inside parameter list include/linux/lockdep.h:300: warning: its scope is only this definition or declaration, which is probably not what you want Acked-by: Ingo Molnar Cc: Martin Schwidefsky Signed-off-by: Heiko Carstens Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/lockdep.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h index 7e1160dde5e7..06fe93a3e916 100644 --- a/include/linux/lockdep.h +++ b/include/linux/lockdep.h @@ -8,6 +8,8 @@ #ifndef __LINUX_LOCKDEP_H #define __LINUX_LOCKDEP_H +struct task_struct; + #ifdef CONFIG_LOCKDEP #include -- cgit v1.2.3 From eb5857084c8d27764b842025e4c805b174e40cad Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Mon, 12 Feb 2007 00:52:27 -0800 Subject: [PATCH] export ufs_fs.h to userspace Was ufs_fs.h purposefully not exported to userspace or did it just slip through the cracks ? assuming the latter scenario, the attached patch touches up the relationship between ufs_fs.h and its sub headers (like ufs_fs_sb.h) so that we can export it ... the silo bootloader takes advantage of this header for example. Signed-off-by: Mike Frysinger Cc: Evgeniy Dushistov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/Kbuild | 1 + include/linux/ufs_fs.h | 4 +++- include/linux/ufs_fs_sb.h | 1 - 3 files changed, 4 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/Kbuild b/include/linux/Kbuild index bb881c3219fa..e81e301a4d71 100644 --- a/include/linux/Kbuild +++ b/include/linux/Kbuild @@ -323,6 +323,7 @@ unifdef-y += tty.h unifdef-y += types.h unifdef-y += udf_fs_i.h unifdef-y += udp.h +unifdef-y += ufs_fs.h unifdef-y += uinput.h unifdef-y += uio.h unifdef-y += unistd.h diff --git a/include/linux/ufs_fs.h b/include/linux/ufs_fs.h index d3a4f994a5dc..5014604d0a50 100644 --- a/include/linux/ufs_fs.h +++ b/include/linux/ufs_fs.h @@ -45,8 +45,10 @@ typedef __u32 __bitwise __fs32; typedef __u16 __bitwise __fs16; #endif +#ifdef __KERNEL__ #include #include +#endif #define UFS_BBLOCK 0 #define UFS_BBSIZE 8192 @@ -303,7 +305,7 @@ typedef __u16 __bitwise __fs16; #define UFS_MAXMNTLEN 512 #define UFS2_MAXMNTLEN 468 #define UFS2_MAXVOLLEN 32 -/* #define UFS_MAXCSBUFS 31 */ +#define UFS_MAXCSBUFS 31 #define UFS_LINK_MAX 32000 /* #define UFS2_NOCSPTRS ((128 / sizeof(void *)) - 4) diff --git a/include/linux/ufs_fs_sb.h b/include/linux/ufs_fs_sb.h index 8ff13c160f3d..e114c93fc578 100644 --- a/include/linux/ufs_fs_sb.h +++ b/include/linux/ufs_fs_sb.h @@ -21,7 +21,6 @@ struct ufs_sb_private_info; struct ufs_cg_private_info; struct ufs_csum; -#define UFS_MAXCSBUFS 31 struct ufs_sb_info { struct ufs_sb_private_info * s_uspi; -- cgit v1.2.3 From 2869b23e4b95cbafffcd2fe110d77aff8c218405 Mon Sep 17 00:00:00 2001 From: Tilman Schmidt Date: Mon, 12 Feb 2007 00:52:34 -0800 Subject: [PATCH] drivers/isdn/gigaset: new M101 driver (v2) This patch adds the line discipline based driver for the Gigaset M101 wireless RS232 adapter. It also improves the documentation a bit. Signed-off-by: Tilman Schmidt Signed-off-by: Hansjoerg Lipp Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/gigaset_dev.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/gigaset_dev.h b/include/linux/gigaset_dev.h index 70ad09c8ad1e..5dc4a316ca37 100644 --- a/include/linux/gigaset_dev.h +++ b/include/linux/gigaset_dev.h @@ -9,8 +9,6 @@ * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * ===================================================================== - * Version: $Id: gigaset_dev.h,v 1.4.4.4 2005/11/21 22:28:09 hjlipp Exp $ - * ===================================================================== */ #ifndef GIGASET_INTERFACE_H -- cgit v1.2.3 From 9b40ff4d729f4a7a9f832c67aa5de0dfa8ad45c0 Mon Sep 17 00:00:00 2001 From: Ben Dooks Date: Mon, 12 Feb 2007 00:52:41 -0800 Subject: [PATCH] spi: add spi_set_drvdata() and spi_get_drvdata() Add wrappers for getting and setting the driver data using spi_device instead of using dev_{get|set}_drvdata with &spi->dev, to mirror the platform_{get|set}_drvdata. Signed-off-by: Ben Dooks Signed-off-by: David Brownell Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/spi/spi.h | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'include/linux') diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h index 176f6e36dbfa..e25fcae89d3b 100644 --- a/include/linux/spi/spi.h +++ b/include/linux/spi/spi.h @@ -114,6 +114,17 @@ static inline void spi_set_ctldata(struct spi_device *spi, void *state) spi->controller_state = state; } +/* device driver data */ + +static inline void spi_set_drvdata(struct spi_device *spi, void *data) +{ + dev_set_drvdata(&spi->dev, data); +} + +static inline void *spi_get_drvdata(struct spi_device *spi) +{ + return dev_get_drvdata(&spi->dev); +} struct spi_message; -- cgit v1.2.3 From ddc1e9753106cedcca7944d2b068baa2e14640b1 Mon Sep 17 00:00:00 2001 From: Ben Dooks Date: Mon, 12 Feb 2007 00:52:43 -0800 Subject: [PATCH] spi: remove return in spi_unregister_driver() Make the spi_unregister_driver() code fit in with the rest of the header file, and only do the action if the driver passed is non-NULL. This also makes the code a line smaller. Signed-off-by: Ben Dooks Signed-off-by: David Brownell Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/spi/spi.h | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h index e25fcae89d3b..851b25d6e82b 100644 --- a/include/linux/spi/spi.h +++ b/include/linux/spi/spi.h @@ -148,13 +148,11 @@ extern int spi_register_driver(struct spi_driver *sdrv); static inline void spi_unregister_driver(struct spi_driver *sdrv) { - if (!sdrv) - return; - driver_unregister(&sdrv->driver); + if (sdrv) + driver_unregister(&sdrv->driver); } - /** * struct spi_master - interface to SPI master controller * @cdev: class interface to this driver -- cgit v1.2.3 From 0ffa0285052607513a29f529ddb5061c907fd8a6 Mon Sep 17 00:00:00 2001 From: Hans-Peter Nilsson Date: Mon, 12 Feb 2007 00:52:45 -0800 Subject: [PATCH] SPI cleanup() method param becomes non-const I'd like to assign NULL to kfree()d members of a structure. I can't do that without ugly casting (see the PXA patch) when the structure pointed to is const-qualified. I don't really see a reason why the cleanup method isn't allowed to alter the object it should clean up. :-) No, I didn't test the PXA patch, but I verified that the NULL-assignment doesn't stop me from doing rmmod/insmodding my own spi_bitbang-based driver. Signed-off-by: Hans-Peter Nilsson Signed-off-by: David Brownell Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/spi/spi.h | 2 +- include/linux/spi/spi_bitbang.h | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h index 851b25d6e82b..9d8d63109a8f 100644 --- a/include/linux/spi/spi.h +++ b/include/linux/spi/spi.h @@ -220,7 +220,7 @@ struct spi_master { struct spi_message *mesg); /* called on release() to free memory provided by spi_master */ - void (*cleanup)(const struct spi_device *spi); + void (*cleanup)(struct spi_device *spi); }; static inline void *spi_master_get_devdata(struct spi_master *master) diff --git a/include/linux/spi/spi_bitbang.h b/include/linux/spi/spi_bitbang.h index 16ce178f54d7..2e8c048b9b80 100644 --- a/include/linux/spi/spi_bitbang.h +++ b/include/linux/spi/spi_bitbang.h @@ -55,7 +55,7 @@ struct spi_bitbang { * methods, if you like. */ extern int spi_bitbang_setup(struct spi_device *spi); -extern void spi_bitbang_cleanup(const struct spi_device *spi); +extern void spi_bitbang_cleanup(struct spi_device *spi); extern int spi_bitbang_transfer(struct spi_device *spi, struct spi_message *m); extern int spi_bitbang_setup_transfer(struct spi_device *spi, struct spi_transfer *t); -- cgit v1.2.3 From 802245611adea5e5877d8c5d9a20f94d8131bfdd Mon Sep 17 00:00:00 2001 From: David Brownell Date: Mon, 12 Feb 2007 00:52:46 -0800 Subject: [PATCH] SPI doc clarifications This clarifies some aspects of the SPI programming interface, based on feedback from Hans-Peter Nilsson. The in-memory representation of words is right-aligned, so for example a twelve bit word is stored using sixteen bits with four undefined bits in the MSB. And controller drivers must reject protocol tweaking modes they do not support. Signed-off-by: David Brownell Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/spi/spi.h | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h index 9d8d63109a8f..4f0f8c2e58a5 100644 --- a/include/linux/spi/spi.h +++ b/include/linux/spi/spi.h @@ -163,7 +163,8 @@ static inline void spi_unregister_driver(struct spi_driver *sdrv) * each slave has a chipselect signal, but it's common that not * every chipselect is connected to a slave. * @setup: updates the device mode and clocking records used by a - * device's SPI controller; protocol code may call this. + * device's SPI controller; protocol code may call this. This + * must fail if an unrecognized or unsupported mode is requested. * @transfer: adds a message to the controller's transfer queue. * @cleanup: frees controller-specific state * @@ -305,6 +306,16 @@ extern struct spi_master *spi_busnum_to_master(u16 busnum); * shifting out three bytes with word size of sixteen or twenty bits; * the former uses two bytes per word, the latter uses four bytes.) * + * In-memory data values are always in native CPU byte order, translated + * from the wire byte order (big-endian except with SPI_LSB_FIRST). So + * for example when bits_per_word is sixteen, buffers are 2N bytes long + * and hold N sixteen bit words in CPU byte order. + * + * When the word size of the SPI transfer is not a power-of-two multiple + * of eight bits, those in-memory words include extra bits. In-memory + * words are always seen by protocol drivers as right-justified, so the + * undefined (rx) or unused (tx) bits are always the most significant bits. + * * All SPI transfers start with the relevant chipselect active. Normally * it stays selected until after the last transfer in a message. Drivers * can affect the chipselect signal using cs_change: @@ -462,6 +473,11 @@ static inline void spi_message_free(struct spi_message *m) * changes those settings, and must be called from a context that can sleep. * The changes take effect the next time the device is selected and data * is transferred to or from it. + * + * Note that this call wil fail if the protocol driver specifies an option + * that the underlying controller or its driver does not support. For + * example, not all hardware supports wire transfers using nine bit words, + * LSB-first wire encoding, or active-high chipselects. */ static inline int spi_setup(struct spi_device *spi) -- cgit v1.2.3 From b587b13a4f670ebae79ae6259cf44328455e4e69 Mon Sep 17 00:00:00 2001 From: David Brownell Date: Mon, 12 Feb 2007 00:52:48 -0800 Subject: [PATCH] SPI eeprom driver This is adds a simple SPI EEPROM driver, providing access to the EEPROM through sysfs much like the I2C "eeprom" driver ... except this driver supports write access, and multiple EEPROM sizes. From: "Tuppa, Walter" Since I have EEPROMs on SPI with different address sizing, I made some changes to your at25.c to support them. Works perfectly. (Also includes a small bugfix for the "what size address" test.) Signed-off-by: David Brownell Signed-off-by: Walter Tuppa Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/spi/eeprom.h | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) create mode 100644 include/linux/spi/eeprom.h (limited to 'include/linux') diff --git a/include/linux/spi/eeprom.h b/include/linux/spi/eeprom.h new file mode 100644 index 000000000000..1085212c446e --- /dev/null +++ b/include/linux/spi/eeprom.h @@ -0,0 +1,22 @@ +#ifndef __LINUX_SPI_EEPROM_H +#define __LINUX_SPI_EEPROM_H + +/* + * Put one of these structures in platform_data for SPI EEPROMS handled + * by the "at25" driver. On SPI, most EEPROMS understand the same core + * command set. If you need to support EEPROMs that don't yet fit, add + * flags to support those protocol options. These values all come from + * the chip datasheets. + */ +struct spi_eeprom { + u32 byte_len; + char name[10]; + u16 page_size; /* for writes */ + u16 flags; +#define EE_ADDR1 0x0001 /* 8 bit addrs */ +#define EE_ADDR2 0x0002 /* 16 bit addrs */ +#define EE_ADDR3 0x0004 /* 24 bit addrs */ +#define EE_READONLY 0x0008 /* disallow writes */ +}; + +#endif /* __LINUX_SPI_EEPROM_H */ -- cgit v1.2.3 From 939b00df0306bc4b5cd25c3c3c78e89b91e72fc8 Mon Sep 17 00:00:00 2001 From: Andries Brouwer Date: Mon, 12 Feb 2007 00:52:49 -0800 Subject: [PATCH] Minix V3 support This morning I needed to read a Minix V3 filesystem, but unfortunately my 2.6.19 did not support that, and neither did the downloaded 2.6.20rc4. Fortunately, google told me that Daniel Aragones had already done the work, patch found at http://www.terra.es/personal2/danarag/ Unfortunaly, looking at the patch was painful to my eyes, so I polished it a bit before applying. The resulting kernel boots, and reads the filesystem it needed to read. Signed-off-by: Daniel Aragones Signed-off-by: Andries Brouwer Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/magic.h | 1 + include/linux/minix_fs.h | 25 ++++++++++++++++++++++++- 2 files changed, 25 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/magic.h b/include/linux/magic.h index b78bbf42135a..b32c8a97fcec 100644 --- a/include/linux/magic.h +++ b/include/linux/magic.h @@ -18,6 +18,7 @@ #define MINIX_SUPER_MAGIC2 0x138F /* minix fs, 30 char names */ #define MINIX2_SUPER_MAGIC 0x2468 /* minix V2 fs */ #define MINIX2_SUPER_MAGIC2 0x2478 /* minix V2 fs, 30 char names */ +#define MINIX3_SUPER_MAGIC 0x4d5a /* minix V3 fs */ #define MSDOS_SUPER_MAGIC 0x4d44 /* MD */ #define NCP_SUPER_MAGIC 0x564c /* Guess, what 0x564c is :-) */ diff --git a/include/linux/minix_fs.h b/include/linux/minix_fs.h index 916e8f72c63d..9850d513ff60 100644 --- a/include/linux/minix_fs.h +++ b/include/linux/minix_fs.h @@ -25,7 +25,6 @@ #define MINIX_ERROR_FS 0x0002 /* fs has errors. */ #define MINIX_INODES_PER_BLOCK ((BLOCK_SIZE)/(sizeof (struct minix_inode))) -#define MINIX2_INODES_PER_BLOCK ((BLOCK_SIZE)/(sizeof (struct minix2_inode))) /* * This is the original minix inode layout on disk. @@ -75,9 +74,33 @@ struct minix_super_block { __u32 s_zones; }; +/* + * V3 minix super-block data on disk + */ +struct minix3_super_block { + __u16 s_ninodes; + __u16 s_nzones; + __u16 s_pad0; + __u16 s_imap_blocks; + __u16 s_zmap_blocks; + __u16 s_firstdatazone; + __u16 s_log_zone_size; + __u16 s_pad1; + __u32 s_max_size; + __u32 s_zones; + __u16 s_magic; + __u16 s_pad2; + __u16 s_blocksize; + __u8 s_disk_version; +}; + struct minix_dir_entry { __u16 inode; char name[0]; }; +struct minix3_dir_entry { + __u32 inode; + char name[0]; +}; #endif -- cgit v1.2.3 From cdc623300841bc8f1625c320d5a6cbc52c43c60d Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Mon, 12 Feb 2007 00:52:51 -0800 Subject: [PATCH] tty: make __proc_set_tty static The aim of this patch set is to start wrapping up the struct pid conversions. As such this patchset culminates with the removal of kill_pg, kill_pg_info, __kill_pg_info, do_each_task_pid, and while_each_task_pid. kill_proc, daemonize, and kernel_thread are still in my sights but there is still work to get to them. The first three are basic cleanups around disassociate_ctty, while working on converting it I found several issues. tty_old_pgrp can be a tricky concept to wrap your head around. 1 tty: Make __proc_set_tty static. 2 tty: Clarify disassociate_ctty 3 tty: Fix the locking for signal->session in disassociate_ctty These just stop using the old helper functions. 4 signal: Use kill_pgrp not kill_pg in the sunos compatibility code. 5 signal: Rewrite kill_something_info so it uses newer helpers. Then the grind to convert the tty layer and all of it's helper functions to struct pid. 6 pid: Make session_of_pgrp use struct pid instead of pid_t. 7 pid: Use struct pid for talking about process groups in exit.c 8 pid: Replace is_orphaned_pgrp with is_current_pgrp_orphaned 9 tty: Update the tty layer to work with struct pid. A final helper function update. 10 pid: Replace do/while_each_task_pid with do/while_each_pid_task And the removal of the functions that are now unused. 11 pid: Remove now unused do_each_task_pid and while_each_task_pid 12 pid: Remove the now unused kill_pg kill_pg_info and __kill_pg_info All of these should be fairly simple and to the point. This patch: Currently all users of __proc_set_tty are in tty_io.c so make the function static. Signed-off-by: Eric W. Biederman Cc: Alan Cox Cc: Oleg Nesterov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/tty.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/tty.h b/include/linux/tty.h index 8427c9e98e6b..0a10a4e7bbc3 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -333,7 +333,6 @@ extern int tty_ioctl(struct inode *inode, struct file *file, unsigned int cmd, extern dev_t tty_devnum(struct tty_struct *tty); extern void proc_clear_tty(struct task_struct *p); -extern void __proc_set_tty(struct task_struct *tsk, struct tty_struct *tty); extern void proc_set_tty(struct task_struct *tsk, struct tty_struct *tty); extern struct tty_struct *get_current_tty(void); -- cgit v1.2.3 From 04a2e6a5cbf84e85fe86de0a18f6509b147e1d89 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Mon, 12 Feb 2007 00:52:56 -0800 Subject: [PATCH] pid: make session_of_pgrp use struct pid instead of pid_t To properly implement a pid namespace I need to deal exclusively in terms of struct pid, because pid_t values become ambiguous. To this end session_of_pgrp is transformed to take and return a struct pid pointer. To avoid the need to worry about reference counting I now require my caller to hold the appropriate locks. Leaving callers repsonsible for increasing the reference count if they need access to the result outside of the locks. Since session_of_pgrp currently only has one caller and that caller simply uses only test the result for equality with another process group, the locking change means I don't actually have to acquire the tasklist_lock at all. tiocspgrp is also modified to take and release the lock. The logic there is a little more complicated but nothing I won't need when I convert pgrp of a tty to a struct pid pointer. Signed-off-by: Eric W. Biederman Cc: Alan Cox Cc: Oleg Nesterov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/kernel.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/kernel.h b/include/linux/kernel.h index 3531764318f2..9ddf25c21538 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -134,7 +134,8 @@ extern unsigned long long memparse(char *ptr, char **retptr); extern int core_kernel_text(unsigned long addr); extern int __kernel_text_address(unsigned long addr); extern int kernel_text_address(unsigned long addr); -extern int session_of_pgrp(int pgrp); +struct pid; +extern struct pid *session_of_pgrp(struct pid *pgrp); extern void dump_thread(struct pt_regs *regs, struct user *dump); -- cgit v1.2.3 From 3e7cd6c413c9e6fbb5e1ee2acdadb4ababd2d474 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Mon, 12 Feb 2007 00:52:58 -0800 Subject: [PATCH] pid: replace is_orphaned_pgrp with is_current_pgrp_orphaned Every call to is_orphaned_pgrp passed in process_group(current) which is racy with respect to another thread changing our process group. It didn't bite us because we were dealing with integers and the worse we would get would be a stale answer. In switching the checks to use struct pid to be a little more efficient and prepare the way for pid namespaces this race became apparent. So I simplified the calls to the more specialized is_current_pgrp_orphaned so I didn't have to worry about making logic changes to avoid the race. Signed-off-by: Eric W. Biederman Cc: Alan Cox Cc: Oleg Nesterov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- 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 0a10a4e7bbc3..d0e03c4a71b1 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -303,7 +303,7 @@ extern int tty_read_raw_data(struct tty_struct *tty, unsigned char *bufp, int buflen); extern void tty_write_message(struct tty_struct *tty, char *msg); -extern int is_orphaned_pgrp(int pgrp); +extern int is_current_pgrp_orphaned(void); extern int is_ignored(int sig); extern int tty_signal(int sig, struct tty_struct *tty); extern void tty_hangup(struct tty_struct * tty); -- cgit v1.2.3 From ab521dc0f8e117fd808d3e425216864d60390500 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Mon, 12 Feb 2007 00:53:00 -0800 Subject: [PATCH] tty: update the tty layer to work with struct pid Of kernel subsystems that work with pids the tty layer is probably the largest consumer. But it has the nice virtue that the assiation with a session only lasts until the session leader exits. Which means that no reference counting is required. So using struct pid winds up being a simple optimization to avoid hash table lookups. In the long term the use of pid_nr also ensures that when we have multiple pid spaces mixed everything will work correctly. Signed-off-by: Eric W. Biederman Cc: Alan Cox Cc: Oleg Nesterov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/init_task.h | 2 +- include/linux/sched.h | 2 +- include/linux/tty.h | 4 ++-- 3 files changed, 4 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/init_task.h b/include/linux/init_task.h index 6383d2d83bb0..a2d95ff50e9b 100644 --- a/include/linux/init_task.h +++ b/include/linux/init_task.h @@ -66,7 +66,7 @@ .cpu_timers = INIT_CPU_TIMERS(sig.cpu_timers), \ .rlim = INIT_RLIMITS, \ .pgrp = 1, \ - .tty_old_pgrp = 0, \ + .tty_old_pgrp = NULL, \ { .__session = 1}, \ } diff --git a/include/linux/sched.h b/include/linux/sched.h index 76c8e2dc48dd..39d40c518531 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -436,7 +436,7 @@ struct signal_struct { /* job control IDs */ pid_t pgrp; - pid_t tty_old_pgrp; + struct pid *tty_old_pgrp; union { pid_t session __deprecated; diff --git a/include/linux/tty.h b/include/linux/tty.h index d0e03c4a71b1..dee72b9a20fb 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -197,8 +197,8 @@ struct tty_struct { struct mutex termios_mutex; struct ktermios *termios, *termios_locked; char name[64]; - int pgrp; - int session; + struct pid *pgrp; + struct pid *session; unsigned long flags; int count; struct winsize winsize; -- cgit v1.2.3 From 9f57a54b6cf3f626334d97e93b5b917ad11e1efc Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Mon, 12 Feb 2007 00:53:02 -0800 Subject: [PATCH] pid: remove now unused do_each_task_pid and while_each_task_pid Now that I have changed all of the users remove the old version of these functions. This should be a clear hint to any out of tree users that they should use do_each_pid_task and while_each_pid_task for new code. Signed-off-by: Eric W. Biederman Cc: Alan Cox Cc: Oleg Nesterov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/pid.h | 14 -------------- 1 file changed, 14 deletions(-) (limited to 'include/linux') diff --git a/include/linux/pid.h b/include/linux/pid.h index 4dec047b1837..2ac27f9997dd 100644 --- a/include/linux/pid.h +++ b/include/linux/pid.h @@ -105,20 +105,6 @@ static inline pid_t pid_nr(struct pid *pid) return nr; } - -#define do_each_task_pid(who, type, task) \ - do { \ - struct hlist_node *pos___; \ - struct pid *pid___ = find_pid(who); \ - if (pid___ != NULL) \ - hlist_for_each_entry_rcu((task), pos___, \ - &pid___->tasks[type], pids[type].node) { - -#define while_each_task_pid(who, type, task) \ - } \ - } while (0) - - #define do_each_pid_task(pid, type, task) \ do { \ struct hlist_node *pos___; \ -- cgit v1.2.3 From 27b0b2f44adffe0193a695bb528a83b550b8e54b Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Mon, 12 Feb 2007 00:53:02 -0800 Subject: [PATCH] pid: remove the now unused kill_pg kill_pg_info and __kill_pg_info Now that I have changed all of the in-tree users remove the old version of these functions. This should make it clear to any out of tree users that they should be using kill_pgrp kill_pgrp_info or __kill_pgrp_info instead. Signed-off-by: Eric W. Biederman Cc: Alan Cox Cc: Oleg Nesterov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- 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 39d40c518531..5053dc01fad4 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1329,14 +1329,11 @@ extern int kill_pid_info(int sig, struct siginfo *info, struct pid *pid); extern int kill_pid_info_as_uid(int, struct siginfo *, struct pid *, uid_t, uid_t, u32); extern int kill_pgrp(struct pid *pid, int sig, int priv); extern int kill_pid(struct pid *pid, int sig, int priv); -extern int __kill_pg_info(int sig, struct siginfo *info, pid_t pgrp); -extern int kill_pg_info(int, struct siginfo *, pid_t); extern void do_notify_parent(struct task_struct *, int); extern void force_sig(int, struct task_struct *); extern void force_sig_specific(int, struct task_struct *); extern int send_sig(int, struct task_struct *, int); extern void zap_other_threads(struct task_struct *p); -extern int kill_pg(pid_t, int, int); extern int kill_proc(pid_t, int, int); extern struct sigqueue *sigqueue_alloc(void); extern void sigqueue_free(struct sigqueue *); -- cgit v1.2.3 From 6b174337e5126de834a971d3edc3681bbfa45e2c Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Mon, 12 Feb 2007 00:53:28 -0800 Subject: [PATCH] knfsd: SUNRPC: update internal API: separate pmap register and temp sockets Currently in the RPC server, registering with the local portmapper and creating "permanent" sockets are tied together. Expand the internal APIs to allow these two socket characteristics to be separately specified. This will be externalized in the next patch. Signed-off-by: Chuck Lever Cc: Aurelien Charbon Signed-off-by: Neil Brown Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/sunrpc/svcsock.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/sunrpc/svcsock.h b/include/linux/sunrpc/svcsock.h index db312a1e2eeb..cef11a6e81e9 100644 --- a/include/linux/sunrpc/svcsock.h +++ b/include/linux/sunrpc/svcsock.h @@ -74,4 +74,11 @@ int svc_addsock(struct svc_serv *serv, char *name_return, int *proto); +/* + * svc_makesock socket characteristics + */ +#define SVC_SOCK_DEFAULTS (0U) +#define SVC_SOCK_ANONYMOUS (1U << 0) /* don't register with pmap */ +#define SVC_SOCK_TEMPORARY (1U << 1) /* flag socket as temporary */ + #endif /* SUNRPC_SVCSOCK_H */ -- cgit v1.2.3 From 482fb94e1b0c2efe8258334aa2a68d4f4a91de9c Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Mon, 12 Feb 2007 00:53:29 -0800 Subject: [PATCH] knfsd: SUNRPC: allow creating an RPC service without registering with portmapper Sometimes we need to create an RPC service but not register it with the local portmapper. NFSv4 delegation callback, for example. Change the svc_makesock() API to allow optionally creating temporary or permanent sockets, optionally registering with the local portmapper, and make it return the ephemeral port of the new socket. Signed-off-by: Chuck Lever Cc: Aurelien Charbon Signed-off-by: Neil Brown Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/sunrpc/svcsock.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/sunrpc/svcsock.h b/include/linux/sunrpc/svcsock.h index cef11a6e81e9..f030409d2994 100644 --- a/include/linux/sunrpc/svcsock.h +++ b/include/linux/sunrpc/svcsock.h @@ -62,7 +62,7 @@ struct svc_sock { /* * Function prototypes. */ -int svc_makesock(struct svc_serv *, int, unsigned short); +int svc_makesock(struct svc_serv *, int, unsigned short, int flags); void svc_close_socket(struct svc_sock *); int svc_recv(struct svc_rqst *, long); int svc_send(struct svc_rqst *); -- cgit v1.2.3 From 067d7817310569f7b76ca08c4d071ca95ad4c1d3 Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Mon, 12 Feb 2007 00:53:30 -0800 Subject: [PATCH] knfsd: SUNRPC: Cache remote peer's address in svc_sock The remote peer's address won't change after the socket has been accepted. We don't need to call ->getname on every incoming request. Signed-off-by: Chuck Lever Cc: Aurelien Charbon Signed-off-by: Neil Brown Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/sunrpc/svcsock.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/sunrpc/svcsock.h b/include/linux/sunrpc/svcsock.h index f030409d2994..cccea0a0feb4 100644 --- a/include/linux/sunrpc/svcsock.h +++ b/include/linux/sunrpc/svcsock.h @@ -57,6 +57,9 @@ struct svc_sock { /* cache of various info for TCP sockets */ void *sk_info_authunix; + + struct sockaddr_storage sk_remote; /* remote peer's address */ + int sk_remotelen; /* length of address */ }; /* -- cgit v1.2.3 From ad06e4bd62351bc569cca0f25d68c58dbd298146 Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Mon, 12 Feb 2007 00:53:32 -0800 Subject: [PATCH] knfsd: SUNRPC: Add a function to format the address in an svc_rqst for printing There are loads of places where the RPC server assumes that the rq_addr fields contains an IPv4 address. Top among these are error and debugging messages that display the server's IP address. Let's refactor the address printing into a separate function that's smart enough to figure out the difference between IPv4 and IPv6 addresses. Signed-off-by: Chuck Lever Cc: Aurelien Charbon Signed-off-by: Neil Brown Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/sunrpc/svc.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h index 64f3d60c72af..1178689b9156 100644 --- a/include/linux/sunrpc/svc.h +++ b/include/linux/sunrpc/svc.h @@ -368,5 +368,8 @@ int svc_register(struct svc_serv *, int, unsigned short); void svc_wake_up(struct svc_serv *); void svc_reserve(struct svc_rqst *rqstp, int space); struct svc_pool * svc_pool_for_cpu(struct svc_serv *serv, int cpu); +char * svc_print_addr(struct svc_rqst *, char *, size_t); + +#define RPC_MAX_ADDRBUFLEN (63U) #endif /* SUNRPC_SVC_H */ -- cgit v1.2.3 From 2442222283918c2d1c20ae651d95fe168757938b Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Mon, 12 Feb 2007 00:53:33 -0800 Subject: [PATCH] knfsd: SUNRPC: Use sockaddr_storage to store address in svc_deferred_req Sockaddr_storage will allow us to store arbitrary socket addresses in the svc_deferred_req struct. Signed-off-by: Chuck Lever Cc: Aurelien Charbon Signed-off-by: Neil Brown Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/sunrpc/svc.h | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h index 1178689b9156..52db9c8985c5 100644 --- a/include/linux/sunrpc/svc.h +++ b/include/linux/sunrpc/svc.h @@ -292,8 +292,9 @@ static inline void svc_free_res_pages(struct svc_rqst *rqstp) struct svc_deferred_req { u32 prot; /* protocol (UDP or TCP) */ - struct sockaddr_in addr; - struct svc_sock *svsk; /* where reply must go */ + struct svc_sock *svsk; + struct sockaddr_storage addr; /* where reply must go */ + size_t addrlen; __be32 daddr; /* where reply must come from */ struct cache_deferred_req handle; int argslen; -- cgit v1.2.3 From 27459f0940e16c68e080f5fc7e85aa9eb3f74528 Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Mon, 12 Feb 2007 00:53:34 -0800 Subject: [PATCH] knfsd: SUNRPC: Provide room in svc_rqst for larger addresses Expand the rq_addr field to allow it to contain larger addresses. Specifically, we replace a 'sockaddr_in' with a 'sockaddr_storage', then everywhere the 'sockaddr_in' was referenced, we use instead an accessor function (svc_addr_in) which safely casts the _storage to _in. Signed-off-by: Chuck Lever Cc: Aurelien Charbon Signed-off-by: Neil Brown Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/sunrpc/svc.h | 17 +++++++++++++++-- 1 file changed, 15 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h index 52db9c8985c5..96c1b6ae7d96 100644 --- a/include/linux/sunrpc/svc.h +++ b/include/linux/sunrpc/svc.h @@ -200,8 +200,8 @@ struct svc_rqst { struct list_head rq_list; /* idle list */ struct list_head rq_all; /* all threads list */ struct svc_sock * rq_sock; /* socket */ - struct sockaddr_in rq_addr; /* peer address */ - int rq_addrlen; + struct sockaddr_storage rq_addr; /* peer address */ + size_t rq_addrlen; struct svc_serv * rq_server; /* RPC service definition */ struct svc_pool * rq_pool; /* thread pool */ @@ -255,6 +255,19 @@ struct svc_rqst { struct task_struct *rq_task; /* service thread */ }; +/* + * Rigorous type checking on sockaddr type conversions + */ +static inline struct sockaddr_in *svc_addr_in(struct svc_rqst *rqst) +{ + return (struct sockaddr_in *) &rqst->rq_addr; +} + +static inline struct sockaddr *svc_addr(struct svc_rqst *rqst) +{ + return (struct sockaddr *) &rqst->rq_addr; +} + /* * Check buffer bounds after decoding arguments */ -- cgit v1.2.3 From 73df0dbaff8d0853387e140f52b6250c486b18a1 Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Mon, 12 Feb 2007 00:53:35 -0800 Subject: [PATCH] knfsd: SUNRPC: Make rq_daddr field address-version independent The rq_daddr field must support larger addresses. Signed-off-by: Chuck Lever Cc: Aurelien Charbon Signed-off-by: Neil Brown Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/sunrpc/svc.h | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h index 96c1b6ae7d96..6d6892fa1d40 100644 --- a/include/linux/sunrpc/svc.h +++ b/include/linux/sunrpc/svc.h @@ -11,6 +11,7 @@ #define SUNRPC_SVC_H #include +#include #include #include #include @@ -191,7 +192,13 @@ static inline void svc_putu32(struct kvec *iov, __be32 val) iov->iov_len += sizeof(__be32); } - +union svc_addr_u { + struct in_addr addr; +#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) + struct in6_addr addr6; +#endif +}; + /* * The context of a single thread, including the request currently being * processed. @@ -227,8 +234,8 @@ struct svc_rqst { unsigned short rq_secure : 1; /* secure port */ - - __be32 rq_daddr; /* dest addr of request - reply from here */ + union svc_addr_u rq_daddr; /* dest addr of request + * - reply from here */ void * rq_argp; /* decoded arguments */ void * rq_resp; /* xdr'd results */ @@ -308,7 +315,7 @@ struct svc_deferred_req { struct svc_sock *svsk; struct sockaddr_storage addr; /* where reply must go */ size_t addrlen; - __be32 daddr; /* where reply must come from */ + union svc_addr_u daddr; /* where reply must come from */ struct cache_deferred_req handle; int argslen; __be32 args[0]; -- cgit v1.2.3 From 95756482c9bfa375418c5a32455494a3042f65cd Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Mon, 12 Feb 2007 00:53:38 -0800 Subject: [PATCH] knfsd: SUNRPC: support IPv6 addresses in RPC server's UDP receive path Add support for IPv6 addresses in the RPC server's UDP receive path. [akpm@linux-foundation.org: cleanups] Signed-off-by: Chuck Lever Cc: Aurelien Charbon Signed-off-by: Neil Brown Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/sunrpc/svc.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h index 6d6892fa1d40..83b3c7b433aa 100644 --- a/include/linux/sunrpc/svc.h +++ b/include/linux/sunrpc/svc.h @@ -270,6 +270,11 @@ static inline struct sockaddr_in *svc_addr_in(struct svc_rqst *rqst) return (struct sockaddr_in *) &rqst->rq_addr; } +static inline struct sockaddr_in6 *svc_addr_in6(struct svc_rqst *rqst) +{ + return (struct sockaddr_in6 *) &rqst->rq_addr; +} + static inline struct sockaddr *svc_addr(struct svc_rqst *rqst) { return (struct sockaddr *) &rqst->rq_addr; -- cgit v1.2.3 From b5d5dfbd59577aed72263f22e28d3eaf98e1c6e5 Mon Sep 17 00:00:00 2001 From: Adrian Bunk Date: Mon, 12 Feb 2007 00:53:40 -0800 Subject: [PATCH] include/linux/nfsd/const.h: remove NFS_SUPER_MAGIC NFS_SUPER_MAGIC is already defined in include/linux/magic.h Signed-off-by: Adrian Bunk Cc: Neil Brown Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/nfsd/const.h | 4 ---- 1 file changed, 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/nfsd/const.h b/include/linux/nfsd/const.h index f0cc77790527..323f8cfa060a 100644 --- a/include/linux/nfsd/const.h +++ b/include/linux/nfsd/const.h @@ -30,10 +30,6 @@ #include -#ifndef NFS_SUPER_MAGIC -# define NFS_SUPER_MAGIC 0x6969 -#endif - /* * Largest number of bytes we need to allocate for an NFS * call or reply. Used to control buffer sizes. We use -- cgit v1.2.3 From 88b4a07e6610f4c93b08b0bb103318218db1e9f6 Mon Sep 17 00:00:00 2001 From: Michael Halcrow Date: Mon, 12 Feb 2007 00:53:43 -0800 Subject: [PATCH] eCryptfs: Public key transport mechanism This is the transport code for public key functionality in eCryptfs. It manages encryption/decryption request queues with a transport mechanism. Currently, netlink is the only implemented transport. Each inode has a unique File Encryption Key (FEK). Under passphrase, a File Encryption Key Encryption Key (FEKEK) is generated from a salt/passphrase combo on mount. This FEKEK encrypts each FEK and writes it into the header of each file using the packet format specified in RFC 2440. This is all symmetric key encryption, so it can all be done via the kernel crypto API. These new patches introduce public key encryption of the FEK. There is no asymmetric key encryption support in the kernel crypto API, so eCryptfs pushes the FEK encryption and decryption out to a userspace daemon. After considering our requirements and determining the complexity of using various transport mechanisms, we settled on netlink for this communication. eCryptfs stores authentication tokens into the kernel keyring. These tokens correlate with individual keys. For passphrase mode of operation, the authentication token contains the symmetric FEKEK. For public key, the authentication token contains a PKI type and an opaque data blob managed by individual PKI modules in userspace. Each user who opens a file under an eCryptfs partition mounted in public key mode must be running a daemon. That daemon has the user's credentials and has access to all of the keys to which the user should have access. The daemon, when started, initializes the pluggable PKI modules available on the system and registers itself with the eCryptfs kernel module. Userspace utilities register public key authentication tokens into the user session keyring. These authentication tokens correlate key signatures with PKI modules and PKI blobs. The PKI blobs contain PKI-specific information necessary for the PKI module to carry out asymmetric key encryption and decryption. When the eCryptfs module parses the header of an existing file and finds a Tag 1 (Public Key) packet (see RFC 2440), it reads in the public key identifier (signature). The asymmetrically encrypted FEK is in the Tag 1 packet; eCryptfs puts together a decrypt request packet containing the signature and the encrypted FEK, then it passes it to the daemon registered for the current->euid via a netlink unicast to the PID of the daemon, which was registered at the time the daemon was started by the user. The daemon actually just makes calls to libecryptfs, which implements request packet parsing and manages PKI modules. libecryptfs grabs the public key authentication token for the given signature from the user session keyring. This auth tok tells libecryptfs which PKI module should receive the request. libecryptfs then makes a decrypt() call to the PKI module, and it passes along the PKI block from the auth tok. The PKI uses the blob to figure out how it should decrypt the data passed to it; it performs the decryption and passes the decrypted data back to libecryptfs. libecryptfs then puts together a reply packet with the decrypted FEK and passes that back to the eCryptfs module. The eCryptfs module manages these request callouts to userspace code via message context structs. The module maintains an array of message context structs and places the elements of the array on two lists: a free and an allocated list. When eCryptfs wants to make a request, it moves a msg ctx from the free list to the allocated list, sets its state to pending, and fires off the message to the user's registered daemon. When eCryptfs receives a netlink message (via the callback), it correlates the msg ctx struct in the alloc list with the data in the message itself. The msg->index contains the offset of the array of msg ctx structs. It verifies that the registered daemon PID is the same as the PID of the process that sent the message. It also validates a sequence number between the received packet and the msg ctx. Then, it copies the contents of the message (the reply packet) into the msg ctx struct, sets the state in the msg ctx to done, and wakes up the process that was sleeping while waiting for the reply. The sleeping process was whatever was performing the sys_open(). This process originally called ecryptfs_send_message(); it is now in ecryptfs_wait_for_response(). When it wakes up and sees that the msg ctx state was set to done, it returns a pointer to the message contents (the reply packet) and returns. If all went well, this packet contains the decrypted FEK, which is then copied into the crypt_stat struct, and life continues as normal. The case for creation of a new file is very similar, only instead of a decrypt request, eCryptfs sends out an encrypt request. > - We have a great clod of key mangement code in-kernel. Why is that > not suitable (or growable) for public key management? eCryptfs uses Howells' keyring to store persistent key data and PKI state information. It defers public key cryptographic transformations to userspace code. The userspace data manipulation request really is orthogonal to key management in and of itself. What eCryptfs basically needs is a secure way to communicate with a particular daemon for a particular task doing a syscall, based on the UID. Nothing running under another UID should be able to access that channel of communication. > - Is it appropriate that new infrastructure for public key > management be private to a particular fs? The messaging.c file contains a lot of code that, perhaps, could be extracted into a separate kernel service. In essence, this would be a sort of request/reply mechanism that would involve a userspace daemon. I am not aware of anything that does quite what eCryptfs does, so I was not aware of any existing tools to do just what we wanted. > What happens if one of these daemons exits without sending a quit > message? There is a stale uid<->pid association in the hash table for that user. When the user registers a new daemon, eCryptfs cleans up the old association and generates a new one. See ecryptfs_process_helo(). > - _why_ does it use netlink? Netlink provides the transport mechanism that would minimize the complexity of the implementation, given that we can have multiple daemons (one per user). I explored the possibility of using relayfs, but that would involve having to introduce control channels and a protocol for creating and tearing down channels for the daemons. We do not have to worry about any of that with netlink. Signed-off-by: Michael Halcrow Cc: David Howells Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/netlink.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/netlink.h b/include/linux/netlink.h index b3b9b609ee89..2a20f488ac1b 100644 --- a/include/linux/netlink.h +++ b/include/linux/netlink.h @@ -23,6 +23,7 @@ #define NETLINK_GENERIC 16 /* leave room for NETLINK_DM (DM Events) */ #define NETLINK_SCSITRANSPORT 18 /* SCSI Transports */ +#define NETLINK_ECRYPTFS 19 #define MAX_LINKS 32 -- cgit v1.2.3 From 30d7e0d466b3ac0b5ef77e4062bf9385f0d72270 Mon Sep 17 00:00:00 2001 From: Alon Bar-Lev Date: Mon, 12 Feb 2007 00:53:52 -0800 Subject: [PATCH] Dynamic kernel command-line: common Current implementation stores a static command-line buffer allocated to COMMAND_LINE_SIZE size. Most architectures stores two copies of this buffer, one for future reference and one for parameter parsing. Current kernel command-line size for most architecture is much too small for module parameters, video settings, initramfs paramters and much more. The problem is that setting COMMAND_LINE_SIZE to a grater value, allocates static buffers. In order to allow a greater command-line size, these buffers should be dynamically allocated or marked as init disposable buffers, so unused memory can be released. This patch renames the static saved_command_line variable into boot_command_line adding __initdata attribute, so that it can be disposed after initialization. This rename is required so applications that use saved_command_line will not be affected by this change. It reintroduces saved_command_line as dynamically allocated buffer to match the data in boot_command_line. It also mark secondary command-line buffer as __initdata, and copies it to dynamically allocated static_command_line buffer components may hold reference to it after initialization. This patch is for linux-2.6.20-rc4-mm1 and is divided to target each architecture. I could not check this in any architecture so please forgive me if I got it wrong. The per-architecture modification is very simple, use boot_command_line in place of saved_command_line. The common code is the change into dynamic command-line. This patch: 1. Rename saved_command_line into boot_command_line, mark as init disposable. 2. Add dynamic allocated saved_command_line. 3. Add dynamic allocated static_command_line. 4. During startup copy: boot_command_line into saved_command_line. arch command_line into static_command_line. 5. Parse static_command_line and not arch command_line, so arch command_line may be freed. Signed-off-by: Alon Bar-Lev Cc: Andi Kleen Cc: Paul Mackerras Cc: Benjamin Herrenschmidt Cc: Richard Henderson Cc: Ivan Kokshaysky Cc: Russell King Cc: Ian Molton Cc: Mikael Starvik Cc: David Howells Cc: Yoshinori Sato Cc: Ralf Baechle Cc: Kyle McMartin Cc: Heiko Carstens Cc: Martin Schwidefsky Cc: Hirokazu Takata Cc: Paul Mundt Cc: Kazumoto Kojima Cc: Richard Curnow Cc: William Lee Irwin III Cc: "David S. Miller" Cc: Jeff Dike Cc: Paolo 'Blaisorblade' Giarrusso Cc: Miles Bader Cc: Chris Zankel Cc: "Luck, Tony" Cc: Geert Uytterhoeven Cc: Roman Zippel Cc: Greg Ungerer Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/init.h | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/init.h b/include/linux/init.h index c65f5107d512..e290a010e3f2 100644 --- a/include/linux/init.h +++ b/include/linux/init.h @@ -67,7 +67,8 @@ extern initcall_t __con_initcall_start[], __con_initcall_end[]; extern initcall_t __security_initcall_start[], __security_initcall_end[]; /* Defined in init/main.c */ -extern char saved_command_line[]; +extern char __initdata boot_command_line[]; +extern char *saved_command_line; extern unsigned int reset_devices; /* used by init/main.c */ @@ -164,7 +165,7 @@ struct obs_kernel_param { #define early_param(str, fn) \ __setup_param(str, fn, fn, 1) -/* Relies on saved_command_line being set */ +/* Relies on boot_command_line being set */ void __init parse_early_param(void); #endif /* __ASSEMBLY__ */ -- cgit v1.2.3 From 3313e29267414e4e3bf0d3de1caf9cb439b64aaf Mon Sep 17 00:00:00 2001 From: Evgeniy Dushistov Date: Mon, 12 Feb 2007 00:54:31 -0800 Subject: [PATCH] ufs2 write: inodes write This patch adds into write inode path function to write UFS2 inode, and modifys allocate inode path to allocate and init additional inode chunks. Also some cleanups: - remove not used parameters in some functions - remove i_gen field from ufs_inode_info structure, there is i_generation in inode structure with same purposes. Signed-off-by: Evgeniy Dushistov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/ufs_fs.h | 4 ++-- include/linux/ufs_fs_i.h | 1 - 2 files changed, 2 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ufs_fs.h b/include/linux/ufs_fs.h index 5014604d0a50..24ce39820560 100644 --- a/include/linux/ufs_fs.h +++ b/include/linux/ufs_fs.h @@ -263,7 +263,7 @@ typedef __u16 __bitwise __fs16; */ #define ufs_inotocg(x) ((x) / uspi->s_ipg) #define ufs_inotocgoff(x) ((x) % uspi->s_ipg) -#define ufs_inotofsba(x) (ufs_cgimin(ufs_inotocg(x)) + ufs_inotocgoff(x) / uspi->s_inopf) +#define ufs_inotofsba(x) (((u64)ufs_cgimin(ufs_inotocg(x))) + ufs_inotocgoff(x) / uspi->s_inopf) #define ufs_inotofsbo(x) ((x) % uspi->s_inopf) /* @@ -756,7 +756,7 @@ struct ufs_sb_private_info { __u32 s_npsect; /* # sectors/track including spares */ __u32 s_interleave; /* hardware sector interleave */ __u32 s_trackskew; /* sector 0 skew, per track */ - __u32 s_csaddr; /* blk addr of cyl grp summary area */ + __u64 s_csaddr; /* blk addr of cyl grp summary area */ __u32 s_cssize; /* size of cyl grp summary area */ __u32 s_cgsize; /* cylinder group size */ __u32 s_ntrak; /* tracks per cylinder */ diff --git a/include/linux/ufs_fs_i.h b/include/linux/ufs_fs_i.h index f50ce3b0cd52..fef77d52b029 100644 --- a/include/linux/ufs_fs_i.h +++ b/include/linux/ufs_fs_i.h @@ -20,7 +20,6 @@ struct ufs_inode_info { __fs64 u2_i_data[15]; } i_u1; __u32 i_flags; - __u32 i_gen; __u32 i_shadow; __u32 i_unused1; __u32 i_unused2; -- cgit v1.2.3 From 54fb996ac15c4014fa4d6b0ec8e42da134204897 Mon Sep 17 00:00:00 2001 From: Evgeniy Dushistov Date: Mon, 12 Feb 2007 00:54:32 -0800 Subject: [PATCH] ufs2 write: block allocation update Patch adds ability to work with 64bit metadata, this made by replacing work with 32bit pointers by inline functions. Signed-off-by: Evgeniy Dushistov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/ufs_fs.h | 33 ++++++++++++++++++++++----------- include/linux/ufs_fs_i.h | 2 +- 2 files changed, 23 insertions(+), 12 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ufs_fs.h b/include/linux/ufs_fs.h index 24ce39820560..44c45449065c 100644 --- a/include/linux/ufs_fs.h +++ b/include/linux/ufs_fs.h @@ -40,6 +40,7 @@ typedef __u64 __fs64; typedef __u32 __fs32; typedef __u16 __fs16; #else +#include typedef __u64 __bitwise __fs64; typedef __u32 __bitwise __fs32; typedef __u16 __bitwise __fs16; @@ -266,13 +267,6 @@ typedef __u16 __bitwise __fs16; #define ufs_inotofsba(x) (((u64)ufs_cgimin(ufs_inotocg(x))) + ufs_inotocgoff(x) / uspi->s_inopf) #define ufs_inotofsbo(x) ((x) % uspi->s_inopf) -/* - * Give cylinder group number for a file system block. - * Give cylinder group block number for a file system block. - */ -#define ufs_dtog(d) ((d) / uspi->s_fpg) -#define ufs_dtogd(d) ((d) % uspi->s_fpg) - /* * Compute the cylinder and rotational position of a cyl block addr. */ @@ -723,6 +717,7 @@ struct ufs_cg_private_info { __u32 c_nclusterblks; /* number of clusters this cg */ }; + struct ufs_sb_private_info { struct ufs_buffer_head s_ubh; /* buffer containing super block */ struct ufs_csum_core cs_total; @@ -952,10 +947,10 @@ struct ufs_super_block_third { #ifdef __KERNEL__ /* balloc.c */ -extern void ufs_free_fragments (struct inode *, unsigned, unsigned); -extern void ufs_free_blocks (struct inode *, unsigned, unsigned); -extern unsigned ufs_new_fragments(struct inode *, __fs32 *, unsigned, unsigned, - unsigned, int *, struct page *); +extern void ufs_free_fragments (struct inode *, u64, unsigned); +extern void ufs_free_blocks (struct inode *, u64, unsigned); +extern u64 ufs_new_fragments(struct inode *, void *, u64, u64, + unsigned, int *, struct page *); /* cylinder.c */ extern struct ufs_cg_private_info * ufs_load_cylinder (struct super_block *, unsigned); @@ -1016,6 +1011,22 @@ static inline struct ufs_inode_info *UFS_I(struct inode *inode) return container_of(inode, struct ufs_inode_info, vfs_inode); } +/* + * Give cylinder group number for a file system block. + * Give cylinder group block number for a file system block. + */ +/* #define ufs_dtog(d) ((d) / uspi->s_fpg) */ +static inline u64 ufs_dtog(struct ufs_sb_private_info * uspi, u64 b) +{ + do_div(b, uspi->s_fpg); + return b; +} +/* #define ufs_dtogd(d) ((d) % uspi->s_fpg) */ +static inline u32 ufs_dtogd(struct ufs_sb_private_info * uspi, u64 b) +{ + return do_div(b, uspi->s_fpg); +} + #endif /* __KERNEL__ */ #endif /* __LINUX_UFS_FS_H */ diff --git a/include/linux/ufs_fs_i.h b/include/linux/ufs_fs_i.h index fef77d52b029..6496caa82f9e 100644 --- a/include/linux/ufs_fs_i.h +++ b/include/linux/ufs_fs_i.h @@ -25,7 +25,7 @@ struct ufs_inode_info { __u32 i_unused2; __u32 i_oeftflag; __u16 i_osync; - __u32 i_lastfrag; + __u64 i_lastfrag; __u32 i_dir_start_lookup; struct inode vfs_inode; }; -- cgit v1.2.3 From 54810342f1372afdaf6cb9a6aea0c35df187db12 Mon Sep 17 00:00:00 2001 From: Dor Laor Date: Mon, 12 Feb 2007 00:54:39 -0800 Subject: [PATCH] kvm: Two-way apic tpr synchronization We report the value of cr8 to userspace on an exit. Also let userspace change cr8 when we re-enter the guest. The lets 64-bit guest code maintain the tpr correctly. Thanks for Yaniv Kamay for the idea. Signed-off-by: Dor Laor Signed-off-by: Avi Kivity Cc: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/kvm.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/kvm.h b/include/linux/kvm.h index 1be148f0fce4..6a5f6f49e037 100644 --- a/include/linux/kvm.h +++ b/include/linux/kvm.h @@ -65,6 +65,8 @@ struct kvm_run { __u8 ready_for_interrupt_injection; __u8 if_flag; __u16 padding2; + + /* in (pre_kvm_run), out (post_kvm_run) */ __u64 cr8; __u64 apic_base; -- cgit v1.2.3 From 8cd133073f9b5cd335c0b2e4740aceb025d50ca9 Mon Sep 17 00:00:00 2001 From: Avi Kivity Date: Mon, 12 Feb 2007 00:54:41 -0800 Subject: [PATCH] kvm: Fix mismatch between 32-bit and 64-bit abi Unfortunately requiring a version bump. Signed-off-by: Avi Kivity Cc: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/kvm.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/kvm.h b/include/linux/kvm.h index 6a5f6f49e037..f3604593fb76 100644 --- a/include/linux/kvm.h +++ b/include/linux/kvm.h @@ -11,7 +11,7 @@ #include #include -#define KVM_API_VERSION 2 +#define KVM_API_VERSION 3 /* * Architectural interrupt line count, and the size of the bitmap needed @@ -187,6 +187,7 @@ struct kvm_translation { __u8 valid; __u8 writeable; __u8 usermode; + __u8 pad[5]; }; /* for KVM_INTERRUPT */ -- cgit v1.2.3 From 47e627bc8c9a70392d2049e6af5bd55fae61fe53 Mon Sep 17 00:00:00 2001 From: Avi Kivity Date: Mon, 12 Feb 2007 00:54:43 -0800 Subject: [PATCH] hotplug: Allow modules to use the cpu hotplug notifiers even if !CONFIG_HOTPLUG_CPU The following patchset allows a host with running virtual machines to be suspended and, on at least a subset of the machines tested, resumed. Note that this is orthogonal to suspending and resuming an individual guest to a file. A side effect of implementing suspend/resume is that cpu hotplug is now supported. This should please the owners of big iron. This patch: KVM wants the cpu hotplug notifications, both for cpu hotplug itself, but more commonly for host suspend/resume. In order to avoid extensive #ifdefs, provide stubs when CONFIG_CPU_HOTPLUG is not defined. In all, we have four cases: - UP: register and unregister stubbed out - SMP+hotplug: full register and unregister - SMP, no hotplug, core: register as __init, unregister stubbed (cpus are brought up during core initialization) - SMP, no hotplug, module: register and unregister stubbed out (cpus cannot be brought up during module lifetime) Signed-off-by: Avi Kivity Cc: Ingo Molnar Cc: Rusty Russell Cc: Oleg Nesterov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/cpu.h | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/cpu.h b/include/linux/cpu.h index bfb520212d71..769ddc6df492 100644 --- a/include/linux/cpu.h +++ b/include/linux/cpu.h @@ -49,10 +49,20 @@ struct notifier_block; #ifdef CONFIG_SMP /* Need to know about CPUs going up/down? */ -extern int register_cpu_notifier(struct notifier_block *nb); #ifdef CONFIG_HOTPLUG_CPU +extern int register_cpu_notifier(struct notifier_block *nb); extern void unregister_cpu_notifier(struct notifier_block *nb); #else + +#ifndef MODULE +extern int register_cpu_notifier(struct notifier_block *nb); +#else +static inline int register_cpu_notifier(struct notifier_block *nb) +{ + return 0; +} +#endif + static inline void unregister_cpu_notifier(struct notifier_block *nb) { } -- cgit v1.2.3 From a268422de8bf1b4c0cb97987b6c329c9f6a3da4b Mon Sep 17 00:00:00 2001 From: Ondrej Zajicek Date: Mon, 12 Feb 2007 00:54:49 -0800 Subject: [PATCH] fbdev driver for S3 Trio/Virge Add a driver for S3 Trio / S3 Virge. Driver is tested with most versions of S3 Trio and with S3 Virge/DX, on i386. (akpm: We kind-of have support for this hardware already, but... virgefb.c - amiga/zorro specific, - broken (according to Kconfig), - uses obsolete/nonexistent interface (struct display_switch) - recent Adrian Bunk's patch removes this driver S3triofb.c - ppc/openfirmware specific - minimal functionality - broken (according to Kconfig), - uses obsolete/nonexistent interface (struct display_switch) ) Signed-off-by: Ondrej Zajicek Cc: James Simmons Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/fb.h | 7 +++ include/linux/svga.h | 124 +++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 131 insertions(+) create mode 100644 include/linux/svga.h (limited to 'include/linux') diff --git a/include/linux/fb.h b/include/linux/fb.h index 64177ec9a019..9402dec393ac 100644 --- a/include/linux/fb.h +++ b/include/linux/fb.h @@ -49,6 +49,13 @@ #define FB_AUX_TEXT_S3_MMIO 2 /* S3 MMIO fasttext */ #define FB_AUX_TEXT_MGA_STEP16 3 /* MGA Millenium I: text, attr, 14 reserved bytes */ #define FB_AUX_TEXT_MGA_STEP8 4 /* other MGAs: text, attr, 6 reserved bytes */ +#define FB_AUX_TEXT_SVGA_GROUP 8 /* 8-15: SVGA tileblit compatible modes */ +#define FB_AUX_TEXT_SVGA_MASK 7 /* lower three bits says step */ +#define FB_AUX_TEXT_SVGA_STEP2 8 /* SVGA text mode: text, attr */ +#define FB_AUX_TEXT_SVGA_STEP4 9 /* SVGA text mode: text, attr, 2 reserved bytes */ +#define FB_AUX_TEXT_SVGA_STEP8 10 /* SVGA text mode: text, attr, 6 reserved bytes */ +#define FB_AUX_TEXT_SVGA_STEP16 11 /* SVGA text mode: text, attr, 14 reserved bytes */ +#define FB_AUX_TEXT_SVGA_LAST 15 /* reserved up to 15 */ #define FB_AUX_VGA_PLANES_VGA4 0 /* 16 color planes (EGA/VGA) */ #define FB_AUX_VGA_PLANES_CFB4 1 /* CFB4 in planes (VGA) */ diff --git a/include/linux/svga.h b/include/linux/svga.h new file mode 100644 index 000000000000..eadb981bb37c --- /dev/null +++ b/include/linux/svga.h @@ -0,0 +1,124 @@ +#ifndef _LINUX_SVGA_H +#define _LINUX_SVGA_H + +#ifdef __KERNEL__ + +#include +#include