Messages in this thread Patch in this message | | | From | Kirill Tkhai <> | Subject | [PATCH] sched, __wake_up_sync_key: Fix nr_exclusive tasks which lead to WF_SYNC clearing | Date | Thu, 04 Jul 2013 22:48:20 +0400 |
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The only one task can replace waker.
Signed-off-by: Kirill Tkhai <tkhai@yandex.ru> CC: Steven Rostedt <rostedt@goodmis.org> CC: Ingo Molnar <mingo@redhat.com> CC: Peter Zijlstra <peterz@infradead.org> --- kernel/sched/core.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 9d06ad6..4ff7404 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -2658,7 +2658,7 @@ void __wake_up_sync_key(wait_queue_head_t *q, unsigned int mode, if (unlikely(!q)) return; - if (unlikely(!nr_exclusive)) + if (unlikely(nr_exclusive != 1)) wake_flags = 0; spin_lock_irqsave(&q->lock, flags);
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