From 516792e67c39d31701641ab355acdb9cbfec0643 Mon Sep 17 00:00:00 2001 From: Kirill Tkhai <ktkhai@odin.com> Date: Mon, 31 Aug 2015 15:12:56 +0300 Subject: [PATCH] perf/core: Delete PF_EXITING checks from perf_cgroup_exit() callback 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 So this check is useless and the comment is obsolete.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 <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> --- kernel/events/core.c | 8 -------- 1 file changed, 8 deletions(-) diff --git a/kernel/events/core.c b/kernel/events/core.c index f548f69c4299..76e64be9bfb5 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -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); } -- GitLab