diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2016-05-24 14:45:21 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-06-14 11:55:15 +0200 |
| commit | be3e7844980352756de4261b276ee2ba5be7a26b (patch) | |
| tree | 977f32f488649a6c77dcec9190d36fddc3df6b69 /ipc | |
| parent | 726328d92a42b6d4b76078e2659f43067f82c4e8 (diff) | |
| download | lwn-be3e7844980352756de4261b276ee2ba5be7a26b.tar.gz lwn-be3e7844980352756de4261b276ee2ba5be7a26b.zip | |
locking/spinlock: Update spin_unlock_wait() users
With the modified semantics of spin_unlock_wait() a number of
explicit barriers can be removed. Also update the comment for the
do_exit() usecase, as that was somewhat stale/obscure.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'ipc')
| -rw-r--r-- | ipc/sem.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/ipc/sem.c b/ipc/sem.c index 84dff3df11a4..ae72b3cddc8d 100644 --- a/ipc/sem.c +++ b/ipc/sem.c @@ -282,7 +282,6 @@ static void sem_wait_array(struct sem_array *sma) sem = sma->sem_base + i; spin_unlock_wait(&sem->lock); } - smp_acquire__after_ctrl_dep(); } /* |