diff options
| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2009-06-19 18:27:26 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-06-23 11:42:44 +0200 |
| commit | f29ac756a40d0f1bb07d682ea521e7b666ff06d5 (patch) | |
| tree | 6fabe2f38ae10f824e57fdd5b035ba81b75a71a8 /kernel/sys.c | |
| parent | 3d906ef10a539ff336010afab8f6f9c4fe379695 (diff) | |
perf_counter: Optimize perf_swcounter_event()
Similar to tracepoints, use an enable variable to reduce
overhead when unused.
Only look for a counter of a particular event type when we know
there is at least one in the system.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <new-submission>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/sys.c')
0 files changed, 0 insertions, 0 deletions