Merge branch 'for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu

Pull RCU updates from Paul E. McKenney:

 - Removal of spin_unlock_wait()
 - SRCU updates
 - Torture-test updates
 - Documentation updates
 - Miscellaneous fixes
 - CPU-hotplug fixes
 - Miscellaneous non-RCU fixes

Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 0 insertions, 31 deletions

diff --git a/include/linux/spinlock.h b/include/linux/spinlock.h
index d9510e8522d4..ef018a6e4985 100644
--- a/include/linux/spinlock.h
+++ b/include/linux/spinlock.h
@@ -130,12 +130,6 @@ do {								\
 #define smp_mb__before_spinlock()       smp_wmb()
 #endif
 
-/**
- * raw_spin_unlock_wait - wait until the spinlock gets unlocked
- * @lock: the spinlock in question.
- */
-#define raw_spin_unlock_wait(lock)      arch_spin_unlock_wait(&(lock)->raw_lock)
-
 #ifdef CONFIG_DEBUG_SPINLOCK
  extern void do_raw_spin_lock(raw_spinlock_t *lock) __acquires(lock);
 #define do_raw_spin_lock_flags(lock, flags) do_raw_spin_lock(lock)
@@ -369,31 +363,6 @@ static __always_inline int spin_trylock_irq(spinlock_t *lock)
         raw_spin_trylock_irqsave(spinlock_check(lock), flags); \
 })
 
-/**
- * spin_unlock_wait - Interpose between successive critical sections
- * @lock: the spinlock whose critical sections are to be interposed.
- *
- * Semantically this is equivalent to a spin_lock() immediately
- * followed by a spin_unlock().  However, most architectures have
- * more efficient implementations in which the spin_unlock_wait()
- * cannot block concurrent lock acquisition, and in some cases
- * where spin_unlock_wait() does not write to the lock variable.
- * Nevertheless, spin_unlock_wait() can have high overhead, so if
- * you feel the need to use it, please check to see if there is
- * a better way to get your job done.
- *
- * The ordering guarantees provided by spin_unlock_wait() are:
- *
- * 1.  All accesses preceding the spin_unlock_wait() happen before
- *     any accesses in later critical sections for this same lock.
- * 2.  All accesses following the spin_unlock_wait() happen after
- *     any accesses in earlier critical sections for this same lock.
- */
-static __always_inline void spin_unlock_wait(spinlock_t *lock)
-{
-        raw_spin_unlock_wait(&lock->rlock);
-}
-
 static __always_inline int spin_is_locked(spinlock_t *lock)
 {
         return raw_spin_is_locked(&lock->rlock);