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| author |   Peter Zijlstra <a.p.zijlstra@chello.nl> | 2009-11-23 11:37:26 +0100 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2009-11-23 11:49:56 +0100 |
| commit | 5e942bb33371254a474653123cd9e13a4c89ee44 (patch) | |
| tree | 2159878d96ea60de9b530b052390b8ca069f1e98 | |
| parent | perf_events: Disable events when we detach them (diff) | |
| download | linux-dev-5e942bb33371254a474653123cd9e13a4c89ee44.tar.xz linux-dev-5e942bb33371254a474653123cd9e13a4c89ee44.zip | |
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>
| -rw-r--r-- | kernel/perf_event.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/perf_event.c b/kernel/perf_event.c index fb851ec34461..8be2574b89b6 100644 --- a/kernel/perf_event.c +++ b/kernel/perf_event.c @@ -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); /* |