I made that two patches, like:
---
Subject: perf: Delete PF_EXITING checks from perf_cgroup_exit() callback
From: Kirill Tkhai <ktk...@odin.com>
Date: Mon, 31 Aug 2015 15:12:56 +0300
cgroup_exit() is not called from copy_process() after commit:
e8604cb43690 ("cgroup: fix spurious lockdep warning in cgroup_exit()")
from do_exit(). So this check is useless and the comment is obsolete.
Signed-off-by: Kirill Tkhai <ktk...@odin.com>
Signed-off-by: Peter Zijlstra (Intel) <pet...@infradead.org>
Link: http://lkml.kernel.org/r/55e444c8.3020...@odin.com
---
kernel/events/core.c | 8 --------
1 file changed, 8 deletions(-)
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -9219,14 +9219,6 @@ static void perf_cgroup_exit(struct cgro
struct cgroup_subsys_state *old_css,
struct task_struct *task)
{
- /*
- * cgroup_exit() is called in the copy_process() failure path.
- * Ignore this case since the task hasn't ran yet, this avoids
- * trying to poke a half freed task state from generic code.
- */
- if (!(task->flags & PF_EXITING))
- return;
-
task_function_call(task, __perf_cgroup_move, task);
}
--
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