diff options
| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2009-05-08 12:52:21 -0400 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-05-08 14:36:57 -0400 |
| commit | 7fc23a5380797012e92a9633169440f2f4a21253 (patch) | |
| tree | b136302efccd407ef4ee608de40042bedd0ab660 /security | |
| parent | 3611dfb8eda847c1c8e1a052f57206f7fddc6a7c (diff) | |
perf_counter: optimize perf_counter_task_tick()
perf_counter_task_tick() does way too much work to find out
there's nothing to do. Provide an easy short-circuit for the
normal case where there are no counters on the system.
[ Impact: micro-optimization ]
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
LKML-Reference: <20090508170028.750619201@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'security')
0 files changed, 0 insertions, 0 deletions