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perf_events: Update the context time on exit 

It appeared we did call update_event_times() on exit, but we
failed to update the context time, which renders the former
moot.

Locking is a bit iffy, we call update_event_times under
ctx->mutex instead of ctx->lock - the next patch fixes this.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <20091123103819.764207355@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Peter Zijlstra 2009-11-23 11:37:26 +01:00 committed by Ingo Molnar
parent 2e2af50b1f
commit 5e942bb333
1 changed files with 1 additions and 0 deletions
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1
kernel/perf_event.c
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@ -4983,6 +4983,7 @@ void perf_event_exit_task(struct task_struct *child)
* the events from it.
*/
unclone_ctx(child_ctx);
update_context_time(child_ctx);
spin_unlock_irqrestore(&child_ctx->lock, flags);
/*