diff options
author | Sasha Levin <sasha.levin@oracle.com> | 2015-11-30 20:34:20 -0500 |
---|---|---|
committer | Ben Hutchings <ben@decadent.org.uk> | 2015-12-30 02:26:00 +0000 |
commit | 0e796c1b57fdd97fc040b0b78ff7fea6c0a4a39d (patch) | |
tree | a2415b819609c31323be29434fba264fb39a2d10 /kernel | |
parent | c627716e77d4cef0f8b689a72168e033495606ba (diff) |
sched/core: Remove false-positive warning from wake_up_process()
commit 119d6f6a3be8b424b200dcee56e74484d5445f7e upstream.
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>
[bwh: Backported to 3.2: adjust filename]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'kernel')
-rw-r--r-- | kernel/sched.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/kernel/sched.c b/kernel/sched.c index 27c309295215..894a2a246727 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -2932,7 +2932,6 @@ 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); |