Merge branch 'sched/locking' into sched/core

Merge reason: the rq locking changes are stable,
              propagate them into the .40 queue.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

9 files changed, 41 insertions, 24 deletions

diff --git a/include/linux/can/platform/mcp251x.h b/include/linux/can/platform/mcp251x.h
index 8e20540043f5..089fe43211a4 100644
--- a/include/linux/can/platform/mcp251x.h
+++ b/include/linux/can/platform/mcp251x.h
@@ -12,6 +12,7 @@
 /**
  * struct mcp251x_platform_data - MCP251X SPI CAN controller platform data
  * @oscillator_frequency:       - oscillator frequency in Hz
+ * @irq_flags:                  - IRQF configuration flags
  * @board_specific_setup:       - called before probing the chip (power,reset)
  * @transceiver_enable:         - called to power on/off the transceiver
  * @power_enable:               - called to power on/off the mcp *and* the
@@ -24,6 +25,7 @@
 
 struct mcp251x_platform_data {
 	unsigned long oscillator_frequency;
+	unsigned long irq_flags;
 	int (*board_specific_setup)(struct spi_device *spi);
 	int (*transceiver_enable)(int enable);
 	int (*power_enable) (int enable);
diff --git a/include/linux/mfd/core.h b/include/linux/mfd/core.h
index ad1b19aa6508..aef23309a742 100644
--- a/include/linux/mfd/core.h
+++ b/include/linux/mfd/core.h
@@ -86,16 +86,25 @@ extern int mfd_clone_cell(const char *cell, const char **clones,
  */
 static inline const struct mfd_cell *mfd_get_cell(struct platform_device *pdev)
 {
-	return pdev->dev.platform_data;
+	return pdev->mfd_cell;
 }
 
 /*
  * Given a platform device that's been created by mfd_add_devices(), fetch
  * the .mfd_data entry from the mfd_cell that created it.
+ * Otherwise just return the platform_data pointer.
+ * This maintains compatibility with platform drivers whose devices aren't
+ * created by the mfd layer, and expect platform_data to contain what would've
+ * otherwise been in mfd_data.
  */
 static inline void *mfd_get_data(struct platform_device *pdev)
 {
-	return mfd_get_cell(pdev)->mfd_data;
+	const struct mfd_cell *cell = mfd_get_cell(pdev);
+
+	if (cell)
+		return cell->mfd_data;
+	else
+		return pdev->dev.platform_data;
 }
 
 extern int mfd_add_devices(struct device *parent, int id,
diff --git a/include/linux/mutex.h b/include/linux/mutex.h
index 94b48bd40dd7..c75471db576e 100644
--- a/include/linux/mutex.h
+++ b/include/linux/mutex.h
@@ -51,7 +51,7 @@ struct mutex {
 	spinlock_t		wait_lock;
 	struct list_head	wait_list;
 #if defined(CONFIG_DEBUG_MUTEXES) || defined(CONFIG_SMP)
-	struct thread_info	*owner;
+	struct task_struct	*owner;
 #endif
 #ifdef CONFIG_DEBUG_MUTEXES
 	const char 		*name;
diff --git a/include/linux/netfilter.h b/include/linux/netfilter.h
index eeec00abb664..7fa95df60146 100644
--- a/include/linux/netfilter.h
+++ b/include/linux/netfilter.h
@@ -270,7 +270,8 @@ struct nf_afinfo {
 					    unsigned int dataoff,
 					    unsigned int len,
 					    u_int8_t protocol);
-	int		(*route)(struct dst_entry **dst, struct flowi *fl);
+	int		(*route)(struct net *net, struct dst_entry **dst,
+				 struct flowi *fl, bool strict);
 	void		(*saveroute)(const struct sk_buff *skb,
 				     struct nf_queue_entry *entry);
 	int		(*reroute)(struct sk_buff *skb,
diff --git a/include/linux/netfilter/ipset/ip_set.h b/include/linux/netfilter/ipset/ip_set.h
index ec333d83f3b4..5a262e3ae715 100644
--- a/include/linux/netfilter/ipset/ip_set.h
+++ b/include/linux/netfilter/ipset/ip_set.h
@@ -293,7 +293,7 @@ struct ip_set {
 	/* Lock protecting the set data */
 	rwlock_t lock;
 	/* References to the set */
-	atomic_t ref;
+	u32 ref;
 	/* The core set type */
 	struct ip_set_type *type;
 	/* The type variant doing the real job */
diff --git a/include/linux/netfilter/ipset/ip_set_ahash.h b/include/linux/netfilter/ipset/ip_set_ahash.h
index ec9d9bea1e37..a0196ac79051 100644
--- a/include/linux/netfilter/ipset/ip_set_ahash.h
+++ b/include/linux/netfilter/ipset/ip_set_ahash.h
@@ -515,8 +515,7 @@ type_pf_head(struct ip_set *set, struct sk_buff *skb)
 	if (h->netmask != HOST_MASK)
 		NLA_PUT_U8(skb, IPSET_ATTR_NETMASK, h->netmask);
 #endif
-	NLA_PUT_NET32(skb, IPSET_ATTR_REFERENCES,
-		      htonl(atomic_read(&set->ref) - 1));
+	NLA_PUT_NET32(skb, IPSET_ATTR_REFERENCES, htonl(set->ref - 1));
 	NLA_PUT_NET32(skb, IPSET_ATTR_MEMSIZE, htonl(memsize));
 	if (with_timeout(h->timeout))
 		NLA_PUT_NET32(skb, IPSET_ATTR_TIMEOUT, htonl(h->timeout));
diff --git a/include/linux/platform_device.h b/include/linux/platform_device.h
index d96db9825708..744942c95fec 100644
--- a/include/linux/platform_device.h
+++ b/include/linux/platform_device.h
@@ -14,6 +14,8 @@
 #include <linux/device.h>
 #include <linux/mod_devicetable.h>
 
+struct mfd_cell;
+
 struct platform_device {
 	const char	* name;
 	int		id;
@@ -23,6 +25,9 @@ struct platform_device {
 
 	const struct platform_device_id	*id_entry;
 
+	/* MFD cell pointer */
+	struct mfd_cell *mfd_cell;
+
 	/* arch specific additions */
 	struct pdev_archdata	archdata;
 };
diff --git a/include/linux/sched.h b/include/linux/sched.h
index e43e5b0ab0b5..d9ca3aa511ff 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -360,7 +360,7 @@ extern signed long schedule_timeout_interruptible(signed long timeout);
 extern signed long schedule_timeout_killable(signed long timeout);
 extern signed long schedule_timeout_uninterruptible(signed long timeout);
 asmlinkage void schedule(void);
-extern int mutex_spin_on_owner(struct mutex *lock, struct thread_info *owner);
+extern int mutex_spin_on_owner(struct mutex *lock, struct task_struct *owner);
 
 struct nsproxy;
 struct user_namespace;
@@ -1038,8 +1038,12 @@ struct sched_domain;
 #define WF_FORK		0x02		/* child wakeup after fork */
 
 #define ENQUEUE_WAKEUP		1
-#define ENQUEUE_WAKING		2
-#define ENQUEUE_HEAD		4
+#define ENQUEUE_HEAD		2
+#ifdef CONFIG_SMP
+#define ENQUEUE_WAKING		4	/* sched_class::task_waking was called */
+#else
+#define ENQUEUE_WAKING		0
+#endif
 
 #define DEQUEUE_SLEEP		1
 
@@ -1057,12 +1061,11 @@ struct sched_class {
 	void (*put_prev_task) (struct rq *rq, struct task_struct *p);
 
 #ifdef CONFIG_SMP
-	int  (*select_task_rq)(struct rq *rq, struct task_struct *p,
-			       int sd_flag, int flags);
+	int  (*select_task_rq)(struct task_struct *p, int sd_flag, int flags);
 
 	void (*pre_schedule) (struct rq *this_rq, struct task_struct *task);
 	void (*post_schedule) (struct rq *this_rq);
-	void (*task_waking) (struct rq *this_rq, struct task_struct *task);
+	void (*task_waking) (struct task_struct *task);
 	void (*task_woken) (struct rq *this_rq, struct task_struct *task);
 
 	void (*set_cpus_allowed)(struct task_struct *p,
@@ -1190,10 +1193,10 @@ struct task_struct {
 	int lock_depth;		/* BKL lock depth */
 
 #ifdef CONFIG_SMP
-#ifdef __ARCH_WANT_UNLOCKED_CTXSW
-	int oncpu;
-#endif
+	struct task_struct *wake_entry;
+	int on_cpu;
 #endif
+	int on_rq;
 
 	int prio, static_prio, normal_prio;
 	unsigned int rt_priority;
@@ -1261,6 +1264,7 @@ struct task_struct {
 
 	/* Revert to default priority/policy when forking */
 	unsigned sched_reset_on_fork:1;
+	unsigned sched_contributes_to_load:1;
 
 	pid_t pid;
 	pid_t tgid;
@@ -2179,8 +2183,10 @@ extern void set_task_comm(struct task_struct *tsk, char *from);
 extern char *get_task_comm(char *to, struct task_struct *tsk);
 
 #ifdef CONFIG_SMP
+void scheduler_ipi(void);
 extern unsigned long wait_task_inactive(struct task_struct *, long match_state);
 #else
+static inline void scheduler_ipi(void) { }
 static inline unsigned long wait_task_inactive(struct task_struct *p,
 					       long match_state)
 {
diff --git a/include/linux/suspend.h b/include/linux/suspend.h
index 5a89e3612875..083ffea7ba18 100644
--- a/include/linux/suspend.h
+++ b/include/linux/suspend.h
@@ -249,6 +249,8 @@ extern void hibernation_set_ops(const struct platform_hibernation_ops *ops);
 extern int hibernate(void);
 extern bool system_entering_hibernation(void);
 #else /* CONFIG_HIBERNATION */
+static inline void register_nosave_region(unsigned long b, unsigned long e) {}
+static inline void register_nosave_region_late(unsigned long b, unsigned long e) {}
 static inline int swsusp_page_is_forbidden(struct page *p) { return 0; }
 static inline void swsusp_set_page_free(struct page *p) {}
 static inline void swsusp_unset_page_free(struct page *p) {}
@@ -297,14 +299,7 @@ static inline bool pm_wakeup_pending(void) { return false; }
 
 extern struct mutex pm_mutex;
 
-#ifndef CONFIG_HIBERNATION
-static inline void register_nosave_region(unsigned long b, unsigned long e)
-{
-}
-static inline void register_nosave_region_late(unsigned long b, unsigned long e)
-{
-}
-
+#ifndef CONFIG_HIBERNATE_CALLBACKS
 static inline void lock_system_sleep(void) {}
 static inline void unlock_system_sleep(void) {}