diff options
| author | Davidlohr Bueso <davidlohr@hp.com> | 2014-07-30 22:41:50 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2014-08-13 10:31:58 +0200 |
| commit | 242489cfe97d44290e7f88b12591fab6c0819045 (patch) | |
| tree | 34d9b2939f8060fc322d13d03515db00485203bc /kernel/locking/mutex.c | |
| parent | locking: Remove deprecated smp_mb__() barriers (diff) | |
| download | linux-242489cfe97d44290e7f88b12591fab6c0819045.tar.xz linux-242489cfe97d44290e7f88b12591fab6c0819045.zip | |
locking/mutexes: Standardize arguments in lock/unlock slowpaths
Just how the locking-end behaves, when unlocking, go ahead and
obtain the proper data structure immediately after the previous
(asm-end) call exits and there are (probably) pending waiters.
This simplifies a bit some of the layering.
Signed-off-by: Davidlohr Bueso <davidlohr@hp.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: jason.low2@hp.com
Cc: aswin@hp.com
Cc: mingo@kernel.org
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org
Link: http://lkml.kernel.org/r/1406752916-3341-1-git-send-email-davidlohr@hp.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/locking/mutex.c')
| -rw-r--r-- | kernel/locking/mutex.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/kernel/locking/mutex.c b/kernel/locking/mutex.c index ae712b25e492..ad0e3335c481 100644 --- a/kernel/locking/mutex.c +++ b/kernel/locking/mutex.c @@ -679,9 +679,8 @@ EXPORT_SYMBOL_GPL(__ww_mutex_lock_interruptible); * Release the lock, slowpath: */ static inline void -__mutex_unlock_common_slowpath(atomic_t *lock_count, int nested) +__mutex_unlock_common_slowpath(struct mutex *lock, int nested) { - struct mutex *lock = container_of(lock_count, struct mutex, count); unsigned long flags; /* @@ -716,7 +715,9 @@ __mutex_unlock_common_slowpath(atomic_t *lock_count, int nested) __visible void __mutex_unlock_slowpath(atomic_t *lock_count) { - __mutex_unlock_common_slowpath(lock_count, 1); + struct mutex *lock = container_of(lock_count, struct mutex, count); + + __mutex_unlock_common_slowpath(lock, 1); } #ifndef CONFIG_DEBUG_LOCK_ALLOC |