perf_event: Clean up perf_event_init_task()
authorXiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Fri, 25 Sep 2009 05:54:01 +0000 (13:54 +0800)
committerIngo Molnar <mingo@elte.hu>
Thu, 1 Oct 2009 07:30:44 +0000 (09:30 +0200)
commit27f9994c50e95f3a5a81fe4c7491a9f9cffe6ec0
tree0bab616325b5ebd3529842e1082f7a32fd87c149
parent8c9ed8e14c342ec5e7f27e7e498f62409a10eb29
perf_event: Clean up perf_event_init_task()

While at it: we can traverse ctx->group_list to get all
group leader, it should be safe since we hold ctx->mutex.

Changlog v1->v2:

  - remove WARN_ON_ONCE() according to Peter Zijlstra's suggestion

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <4ABC5AF9.6060808@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
kernel/perf_event.c