diff options
| author | Jason Low <jason.low2@hp.com> | 2014-07-14 19:27:50 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2014-07-16 13:28:05 +0200 |
| commit | 4d9d951e6b5df85ccfca2c5bd8b4f5c71d256b65 (patch) | |
| tree | 451c3e6656bb75fa42baa97d344db38bdab7f4ab /kernel | |
| parent | locking/spinlocks/mcs: Convert osq lock to atomic_t to reduce overhead (diff) | |
| download | linux-4d9d951e6b5df85ccfca2c5bd8b4f5c71d256b65.tar.xz linux-4d9d951e6b5df85ccfca2c5bd8b4f5c71d256b65.zip | |
locking/spinlocks/mcs: Introduce and use init macro and function for osq locks
Currently, we initialize the osq lock by directly setting the lock's values. It
would be preferable if we use an init macro to do the initialization like we do
with other locks.
This patch introduces and uses a macro and function for initializing the osq lock.
Signed-off-by: Jason Low <jason.low2@hp.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: Scott Norton <scott.norton@hp.com>
Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Waiman Long <waiman.long@hp.com>
Cc: Davidlohr Bueso <davidlohr@hp.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Aswin Chandramouleeswaran <aswin@hp.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Chris Mason <clm@fb.com>
Cc: Josef Bacik <jbacik@fusionio.com>
Link: http://lkml.kernel.org/r/1405358872-3732-4-git-send-email-jason.low2@hp.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/locking/mutex.c | 2 | ||||
| -rw-r--r-- | kernel/locking/rwsem-xadd.c | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/kernel/locking/mutex.c b/kernel/locking/mutex.c index d9b313906caa..acca2c1a3c5e 100644 --- a/kernel/locking/mutex.c +++ b/kernel/locking/mutex.c @@ -60,7 +60,7 @@ __mutex_init(struct mutex *lock, const char *name, struct lock_class_key *key) INIT_LIST_HEAD(&lock->wait_list); mutex_clear_owner(lock); #ifdef CONFIG_MUTEX_SPIN_ON_OWNER - atomic_set(&lock->osq.tail, OSQ_UNLOCKED_VAL); + osq_lock_init(&lock->osq); #endif debug_mutex_init(lock, name, key); diff --git a/kernel/locking/rwsem-xadd.c b/kernel/locking/rwsem-xadd.c index b77a6230bbf6..7190592c2645 100644 --- a/kernel/locking/rwsem-xadd.c +++ b/kernel/locking/rwsem-xadd.c @@ -84,7 +84,7 @@ void __init_rwsem(struct rw_semaphore *sem, const char *name, INIT_LIST_HEAD(&sem->wait_list); #ifdef CONFIG_SMP sem->owner = NULL; - atomic_set(&sem->osq.tail, OSQ_UNLOCKED_VAL); + osq_lock_init(&sem->osq); #endif } |