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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> |
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| linux | ||
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