diff options
| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2010-03-08 17:51:33 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2010-03-10 13:22:31 +0100 |
| commit | 71e2d2828046133ed985696a02e2e1499ca0bfb8 (patch) | |
| tree | 0c180d1da4be85254e59001420ff9c558b38e205 /arch/x86/kernel/cpu/perf_event_intel.c | |
| parent | c08053e627d23490a03431285b78b7a5b617fbad (diff) | |
perf, x86: Avoid double disable on throttle vs ioctl(PERF_IOC_DISABLE)
Calling ioctl(PERF_EVENT_IOC_DISABLE) on a thottled counter would result
in a double disable, cure this by using x86_pmu_{start,stop} for
throttle/unthrottle and teach x86_pmu_stop() to check ->active_mask.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: paulus@samba.org
Cc: eranian@google.com
Cc: robert.richter@amd.com
Cc: fweisbec@gmail.com
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/cpu/perf_event_intel.c')
| -rw-r--r-- | arch/x86/kernel/cpu/perf_event_intel.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kernel/cpu/perf_event_intel.c b/arch/x86/kernel/cpu/perf_event_intel.c index d87421c3f55b..84bfde64a337 100644 --- a/arch/x86/kernel/cpu/perf_event_intel.c +++ b/arch/x86/kernel/cpu/perf_event_intel.c @@ -774,7 +774,7 @@ again: data.period = event->hw.last_period; if (perf_event_overflow(event, 1, &data, regs)) - intel_pmu_disable_event(event); + x86_pmu_stop(event); } intel_pmu_ack_status(ack); |