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authorThomas Gleixner <tglx@linutronix.de>2016-02-22 22:19:14 +0000
committerIngo Molnar <mingo@kernel.org>2016-02-29 09:35:16 +0100
commit54d751d4ad357c817907fe89db3222b97ff66db3 (patch)
tree92db2b1027b3d242210e184f9e147e253ed617c3 /include/linux/perf_event.h
parent1384c70442b71f882e7e7153df542794d468a15d (diff)
downloadop-kernel-dev-54d751d4ad357c817907fe89db3222b97ff66db3.zip
op-kernel-dev-54d751d4ad357c817907fe89db3222b97ff66db3.tar.gz
perf: Allow storage of PMU private data in event
For PMUs which are not per CPU, but e.g. per package/socket, we want to be able to store a reference to the underlying per package/socket facility in the event at init time so we can avoid magic storage constructs in the PMU driver. This allows us to get rid of the per CPU dance in the intel uncore and RAPL drivers and avoids a lookup of the per package data in the perf hotpath. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Andi Kleen <andi.kleen@intel.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Harish Chegondi <harish.chegondi@intel.com> Cc: Jacob Pan <jacob.jun.pan@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kan Liang <kan.liang@intel.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Vince Weaver <vincent.weaver@maine.edu> Cc: linux-kernel@vger.kernel.org Link: http://lkml.kernel.org/r/20160222221011.364140369@linutronix.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/linux/perf_event.h')
-rw-r--r--include/linux/perf_event.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index f5c5a3f..a9d8cab 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -468,6 +468,7 @@ struct perf_event {
int group_flags;
struct perf_event *group_leader;
struct pmu *pmu;
+ void *pmu_private;
enum perf_event_active_state state;
unsigned int attach_state;
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