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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2011-11-20 23:30:47 +0100
committerIngo Molnar <mingo@elte.hu>2011-12-21 11:01:11 +0100
commit0c9d42ed4cee2aa1dfc3a260b741baae8615744f (patch)
tree393a3a3d0be5cbd57e1d03490b3f6a5a15d5367d /kernel/events
parentfe4a330885aee20f233de36085fb15c38094e635 (diff)
downloadop-kernel-dev-0c9d42ed4cee2aa1dfc3a260b741baae8615744f.zip
op-kernel-dev-0c9d42ed4cee2aa1dfc3a260b741baae8615744f.tar.gz
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 'kernel/events')
-rw-r--r--kernel/events/core.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/events/core.c b/kernel/events/core.c
index 05affc3..dcd4049e 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -5505,6 +5505,7 @@ static int pmu_dev_alloc(struct pmu *pmu)
if (!pmu->dev)
goto out;
+ pmu->dev->groups = pmu->attr_groups;
device_initialize(pmu->dev);
ret = dev_set_name(pmu->dev, "%s", pmu->name);
if (ret)
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