From 7550ddffe4c8040db31c66e5bd64531e2916bbf1 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Wed, 24 Sep 2014 07:34:46 -0700 Subject: [PATCH] perf/x86: Add INTEL_FLAGS_UEVENT_CONSTRAINT Add a FLAGS_UEVENT_CONSTRAINT macro that allows us to match on event+umask, and in additional all flags. This is needed to ensure the INV and CMASK fields are zero for specific events, as this can cause undefined behavior. Signed-off-by: Andi Kleen Signed-off-by: Peter Zijlstra (Intel) Cc: Kan Liang Cc: Maria Dimakopoulou Cc: Mark Davies Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1411569288-5627-1-git-send-email-andi@firstfloor.org Signed-off-by: Ingo Molnar --- arch/x86/kernel/cpu/perf_event.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/x86/kernel/cpu/perf_event.h b/arch/x86/kernel/cpu/perf_event.h index fc5eb390b368..4e6cdb0ddc70 100644 --- a/arch/x86/kernel/cpu/perf_event.h +++ b/arch/x86/kernel/cpu/perf_event.h @@ -253,6 +253,10 @@ struct cpu_hw_events { #define INTEL_UEVENT_CONSTRAINT(c, n) \ EVENT_CONSTRAINT(c, n, INTEL_ARCH_EVENT_MASK) +/* Like UEVENT_CONSTRAINT, but match flags too */ +#define INTEL_FLAGS_UEVENT_CONSTRAINT(c, n) \ + EVENT_CONSTRAINT(c, n, INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS) + #define INTEL_PLD_CONSTRAINT(c, n) \ __EVENT_CONSTRAINT(c, n, INTEL_ARCH_EVENT_MASK|X86_ALL_EVENT_FLAGS, \ HWEIGHT(n), 0, PERF_X86_EVENT_PEBS_LDLAT) -- 2.34.1