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authorSasha Levin <sasha.levin@oracle.com>2015-11-30 20:34:20 -0500
committerIngo Molnar <mingo@kernel.org>2015-12-04 10:10:16 +0100
commit119d6f6a3be8b424b200dcee56e74484d5445f7e (patch)
treec200048bea0141e0767d2b0928869de15dcfc590
parent68985633bccb6066bf1803e316fbc6c1f5b796d6 (diff)
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sched/core: Remove false-positive warning from wake_up_process()
Because wakeups can (fundamentally) be late, a task might not be in the expected state. Therefore testing against a task's state is racy, and can yield false positives. Signed-off-by: Sasha Levin <sasha.levin@oracle.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: oleg@redhat.com Fixes: 9067ac85d533 ("wake_up_process() should be never used to wakeup a TASK_STOPPED/TRACED task") Link: http://lkml.kernel.org/r/1448933660-23082-1-git-send-email-sasha.levin@oracle.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
-rw-r--r--kernel/sched/core.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 4d568ac9319e..fc8c9879113c 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -2039,7 +2039,6 @@ out:
*/
int wake_up_process(struct task_struct *p)
{
- WARN_ON(task_is_stopped_or_traced(p));
return try_to_wake_up(p, TASK_NORMAL, 0);
}
EXPORT_SYMBOL(wake_up_process);