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authorLinus Torvalds <torvalds@linux-foundation.org>2009-10-08 12:16:35 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-10-08 12:16:35 -0700
commitf579bbcd9bb8b688df03191b92c56ab8af4d6322 (patch)
treed450f986022aab73f86f794a03c7f21ad0ece8ec /include/linux
parente80fb7e52fd305b916a671755ca31ecf8f92e94e (diff)
parentda085681014fb43d67d9bf6d14bc068e9254bd49 (diff)
Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: futex: fix requeue_pi key imbalance futex: Fix typo in FUTEX_WAIT/WAKE_BITSET_PRIVATE definitions rcu: Place root rcu_node structure in separate lockdep class rcu: Make hot-unplugged CPU relinquish its own RCU callbacks rcu: Move rcu_barrier() to rcutree futex: Move exit_pi_state() call to release_mm() futex: Nullify robust lists after cleanup futex: Fix locking imbalance panic: Fix panic message visibility by calling bust_spinlocks(0) before dying rcu: Replace the rcu_barrier enum with pointer to call_rcu*() function rcu: Clean up code based on review feedback from Josh Triplett, part 4 rcu: Clean up code based on review feedback from Josh Triplett, part 3 rcu: Fix rcu_lock_map build failure on CONFIG_PROVE_LOCKING=y rcu: Clean up code to address Ingo's checkpatch feedback rcu: Clean up code based on review feedback from Josh Triplett, part 2 rcu: Clean up code based on review feedback from Josh Triplett
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/futex.h4
-rw-r--r--include/linux/rcupdate.h18
-rw-r--r--include/linux/rcutree.h13
3 files changed, 19 insertions, 16 deletions
diff --git a/include/linux/futex.h b/include/linux/futex.h
index 8ec17997d94..1e5a26d7923 100644
--- a/include/linux/futex.h
+++ b/include/linux/futex.h
@@ -33,8 +33,8 @@
#define FUTEX_LOCK_PI_PRIVATE (FUTEX_LOCK_PI | FUTEX_PRIVATE_FLAG)
#define FUTEX_UNLOCK_PI_PRIVATE (FUTEX_UNLOCK_PI | FUTEX_PRIVATE_FLAG)
#define FUTEX_TRYLOCK_PI_PRIVATE (FUTEX_TRYLOCK_PI | FUTEX_PRIVATE_FLAG)
-#define FUTEX_WAIT_BITSET_PRIVATE (FUTEX_WAIT_BITS | FUTEX_PRIVATE_FLAG)
-#define FUTEX_WAKE_BITSET_PRIVATE (FUTEX_WAKE_BITS | FUTEX_PRIVATE_FLAG)
+#define FUTEX_WAIT_BITSET_PRIVATE (FUTEX_WAIT_BITSET | FUTEX_PRIVATE_FLAG)
+#define FUTEX_WAKE_BITSET_PRIVATE (FUTEX_WAKE_BITSET | FUTEX_PRIVATE_FLAG)
#define FUTEX_WAIT_REQUEUE_PI_PRIVATE (FUTEX_WAIT_REQUEUE_PI | \
FUTEX_PRIVATE_FLAG)
#define FUTEX_CMP_REQUEUE_PI_PRIVATE (FUTEX_CMP_REQUEUE_PI | \
diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h
index 6fe0363724e..3ebd0b7bcb0 100644
--- a/include/linux/rcupdate.h
+++ b/include/linux/rcupdate.h
@@ -77,7 +77,7 @@ extern int rcu_scheduler_active;
#error "Unknown RCU implementation specified to kernel configuration"
#endif
-#define RCU_HEAD_INIT { .next = NULL, .func = NULL }
+#define RCU_HEAD_INIT { .next = NULL, .func = NULL }
#define RCU_HEAD(head) struct rcu_head head = RCU_HEAD_INIT
#define INIT_RCU_HEAD(ptr) do { \
(ptr)->next = NULL; (ptr)->func = NULL; \
@@ -129,12 +129,6 @@ static inline void rcu_read_lock(void)
rcu_read_acquire();
}
-/**
- * rcu_read_unlock - marks the end of an RCU read-side critical section.
- *
- * See rcu_read_lock() for more information.
- */
-
/*
* So where is rcu_write_lock()? It does not exist, as there is no
* way for writers to lock out RCU readers. This is a feature, not
@@ -144,6 +138,12 @@ static inline void rcu_read_lock(void)
* used as well. RCU does not care how the writers keep out of each
* others' way, as long as they do so.
*/
+
+/**
+ * rcu_read_unlock - marks the end of an RCU read-side critical section.
+ *
+ * See rcu_read_lock() for more information.
+ */
static inline void rcu_read_unlock(void)
{
rcu_read_release();
@@ -196,6 +196,8 @@ static inline void rcu_read_lock_sched(void)
__acquire(RCU_SCHED);
rcu_read_acquire();
}
+
+/* Used by lockdep and tracing: cannot be traced, cannot call lockdep. */
static inline notrace void rcu_read_lock_sched_notrace(void)
{
preempt_disable_notrace();
@@ -213,6 +215,8 @@ static inline void rcu_read_unlock_sched(void)
__release(RCU_SCHED);
preempt_enable();
}
+
+/* Used by lockdep and tracing: cannot be traced, cannot call lockdep. */
static inline notrace void rcu_read_unlock_sched_notrace(void)
{
__release(RCU_SCHED);
diff --git a/include/linux/rcutree.h b/include/linux/rcutree.h
index 37682770e9d..46e9ab3ee6e 100644
--- a/include/linux/rcutree.h
+++ b/include/linux/rcutree.h
@@ -30,10 +30,14 @@
#ifndef __LINUX_RCUTREE_H
#define __LINUX_RCUTREE_H
+struct notifier_block;
+
extern void rcu_sched_qs(int cpu);
extern void rcu_bh_qs(int cpu);
-
+extern int rcu_cpu_notify(struct notifier_block *self,
+ unsigned long action, void *hcpu);
extern int rcu_needs_cpu(int cpu);
+extern int rcu_expedited_torture_stats(char *page);
#ifdef CONFIG_TREE_PREEMPT_RCU
@@ -85,16 +89,11 @@ static inline void synchronize_rcu_bh_expedited(void)
extern void __rcu_init(void);
extern void rcu_check_callbacks(int cpu, int user);
-extern void rcu_restart_cpu(int cpu);
extern long rcu_batches_completed(void);
extern long rcu_batches_completed_bh(void);
extern long rcu_batches_completed_sched(void);
-static inline void rcu_init_sched(void)
-{
-}
-
#ifdef CONFIG_NO_HZ
void rcu_enter_nohz(void);
void rcu_exit_nohz(void);
@@ -107,7 +106,7 @@ static inline void rcu_exit_nohz(void)
}
#endif /* CONFIG_NO_HZ */
-/* A context switch is a grace period for rcutree. */
+/* A context switch is a grace period for RCU-sched and RCU-bh. */
static inline int rcu_blocking_is_gp(void)
{
return num_online_cpus() == 1;