Messages in this thread | | | Date | Wed, 12 May 2010 17:24:52 +0200 | From | Frederic Weisbecker <> | Subject | Re: [PATCH] perf: change event inheritance logic in stat and record |
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On Wed, May 12, 2010 at 10:40:01AM +0200, Stephane Eranian wrote: > By default, event inheritance across fork and pthread_create was > on but the -i option of stat and record, which enabled inheritance, > led to believe it was off by default. > > This patch fixes this logic by inverting the meaning of the -i option. > By default inheritance is on whether you attach to a process (-p), a > thread (-t) or start a process. If you pass -i, then you turn off > inheritance. Turning off inheritance if you don't need it, helps > limit perf resource usage as well. > > The patch also fixes perf stat -t xxxx and perf record -t xxxx > which did not start the counters. > > Signed-off-by: Stephane Eranian <eranian@google.com>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
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