| commit | 075e0b00857e166dcc3e39037a1fc5a90acac709 | |
| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | |
| Sat, 9 Apr 2011 19:17:40 +0000 (9 21:17 +0200) | ||
| committer | Ingo Molnar <mingo@elte.hu> | |
| Sat, 28 May 2011 16:01:09 +0000 (28 18:01 +0200) | ||
| tree | 448cc154bde8d50cb43578416467cfe94d8267c5 | treesnapshot (tar.gz zip) |
| parent | f506b3dc0ec454a16d40cab9ee5d75435b39dc50 | commitdiff |
perf: Optimize ctx_sched_out()
Oleg noted that ctx_sched_out() disables the PMU even though it might
not actually do something, avoid needless PMU-disabling.
Reported-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20110409192141.665385503@chello.nl
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Oleg noted that ctx_sched_out() disables the PMU even though it might
not actually do something, avoid needless PMU-disabling.
Reported-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20110409192141.665385503@chello.nl
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| kernel/events/core.c | diffblobblamehistory |