| commit | f344011ccb85469445369153c3d27c4ee4bc2ac8 | [log] [tgz] |
|---|---|---|
| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | Mon Jun 22 13:58:35 2009 +0200 |
| committer | Ingo Molnar <mingo@elte.hu> | Tue Jun 23 11:42:46 2009 +0200 |
| tree | 66f041a826d09c690a5e6bb3d091494d52bc8565 | |
| parent | b84fbc9fb1d943e2c5f4efe52ed0e3c93a4bdb6a [diff] |
perf_counter: Optimize perf_counter_alloc()'s inherit case We don't need to add usage counts for swcounter and attr usage models for inherited counters since the parent counter will always have one, which suffices to generate the needed output. This avoids up to 3 global atomic increments per inherited counter. LKML-Reference: <new-submission> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>