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perf/core: Delete PF_EXITING checks from perf_cgroup_exit() callback

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cgroup_exit() is not called from copy_process() after commit:

  e8604cb436 ("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 So this check is useless and the comment is obsolete.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 <ktkhai@odin.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Link: http://lkml.kernel.org/r/55E444C8.3020402@odin.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Kirill Tkhai 2015-08-31 15:12:56 +03:00 committed by Ingo Molnar
parent deb27519bf
commit 516792e67c
1 changed files with 0 additions and 8 deletions
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8
kernel/events/core.c
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@ -9297,14 +9297,6 @@ static void perf_cgroup_exit(struct cgroup_subsys_state *css,
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);
}