diff options
| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2011-11-20 23:30:47 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2011-12-21 11:01:11 +0100 |
| commit | 0c9d42ed4cee2aa1dfc3a260b741baae8615744f (patch) | |
| tree | 393a3a3d0be5cbd57e1d03490b3f6a5a15d5367d /arch/x86/kernel/cpu/perf_event.h | |
| parent | fe4a330885aee20f233de36085fb15c38094e635 (diff) | |
| download | blackbird-op-linux-0c9d42ed4cee2aa1dfc3a260b741baae8615744f.tar.gz blackbird-op-linux-0c9d42ed4cee2aa1dfc3a260b741baae8615744f.zip | |
perf, x86: Provide means for disabling userspace RDPMC
Allow the disabling of RDPMC via a pmu specific attribute:
echo 0 > /sys/bus/event_source/devices/cpu/rdpmc
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Cc: Arun Sharma <asharma@fb.com>
Link: http://lkml.kernel.org/n/tip-pqeog465zo5hsimtkfz73f27@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/cpu/perf_event.h')
| -rw-r--r-- | arch/x86/kernel/cpu/perf_event.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/perf_event.h b/arch/x86/kernel/cpu/perf_event.h index 8944062f46e2..513d617b93c4 100644 --- a/arch/x86/kernel/cpu/perf_event.h +++ b/arch/x86/kernel/cpu/perf_event.h @@ -307,6 +307,14 @@ struct x86_pmu { struct x86_pmu_quirk *quirks; int perfctr_second_write; + /* + * sysfs attrs + */ + int attr_rdpmc; + + /* + * CPU Hotplug hooks + */ int (*cpu_prepare)(int cpu); void (*cpu_starting)(int cpu); void (*cpu_dying)(int cpu); |
