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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2011-02-16 11:22:34 +0100
committerIngo Molnar <mingo@elte.hu>2011-02-16 13:30:55 +0100
commit163ec4354a5135c6c38c3f4a9b46a31900ebdf48 (patch)
tree59063e726453ace397c66d95cab09ac43265be41 /kernel/sysctl.c
parent4979d2729af22f6ce8faa325fc60a85a2c2daa02 (diff)
perf: Optimize throttling code
By pre-computing the maximum number of samples per tick we can avoid a multiplication and a conditional since MAX_INTERRUPTS > max_samples_per_tick. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/sysctl.c')
-rw-r--r--kernel/sysctl.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 0f1bd83db985..daef911cbadb 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -948,7 +948,7 @@ static struct ctl_table kern_table[] = {
.data = &sysctl_perf_event_sample_rate,
.maxlen = sizeof(sysctl_perf_event_sample_rate),
.mode = 0644,
- .proc_handler = proc_dointvec,
+ .proc_handler = perf_proc_update_handler,
},
#endif
#ifdef CONFIG_KMEMCHECK