diff options
| author | Will Deacon <will.deacon@arm.com> | 2013-11-27 13:54:39 +0000 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2013-12-17 15:21:35 +0100 |
| commit | 9450d14fb959336803e5209119eb422b667b96aa (patch) | |
| tree | 097f560f958e43d1d0173882c810788fa53c3567 | |
| parent | bad7192b842c83e580747ca57104dd51fe08c223 (diff) | |
| download | lwn-9450d14fb959336803e5209119eb422b667b96aa.tar.gz lwn-9450d14fb959336803e5209119eb422b667b96aa.zip | |
Revert "ARM: 7556/1: perf: fix updated event period in response to PERF_EVENT_IOC_PERIOD"
This reverts commit 3581fe0ef37ce12ac7a4f74831168352ae848edc.
Fixes to the handling of PERF_EVENT_IOC_PERIOD in the core code mean
we no longer have to play this horrible game.
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1385560479-11014-2-git-send-email-will.deacon@arm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
| -rw-r--r-- | arch/arm/kernel/perf_event.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/arch/arm/kernel/perf_event.c b/arch/arm/kernel/perf_event.c index bc3f2efa0d86..789d846a9184 100644 --- a/arch/arm/kernel/perf_event.c +++ b/arch/arm/kernel/perf_event.c @@ -99,10 +99,6 @@ int armpmu_event_set_period(struct perf_event *event) s64 period = hwc->sample_period; int ret = 0; - /* The period may have been changed by PERF_EVENT_IOC_PERIOD */ - if (unlikely(period != hwc->last_period)) - left = period - (hwc->last_period - left); - if (unlikely(left <= -period)) { left = period; local64_set(&hwc->period_left, left); |