linux-kernel - [tip:perf/core] perf/x86: Add INTEL_FLAGS_UEVENT

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Message-ID: <tip-7550ddffe4c8040db31c66e5bd64531e2916bbf1@git.kernel.org>
Date:	Sun, 16 Nov 2014 04:34:52 -0800
From:	tip-bot for Andi Kleen <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	kan.liang@...el.com, maria.n.dimakopoulou@...il.com,
	linux-kernel@...r.kernel.org, eranian@...gle.com, mingo@...nel.org,
	peterz@...radead.org, ak@...ux.intel.com, junk@...af.co.uk,
	tglx@...utronix.de, hpa@...or.com
Subject: [tip:perf/core] perf/x86: Add INTEL_FLAGS_UEVENT_CONSTRAINT

Commit-ID:  7550ddffe4c8040db31c66e5bd64531e2916bbf1
Gitweb:     http://git.kernel.org/tip/7550ddffe4c8040db31c66e5bd64531e2916bbf1
Author:     Andi Kleen <ak@...ux.intel.com>
AuthorDate: Wed, 24 Sep 2014 07:34:46 -0700
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Sun, 16 Nov 2014 11:41:54 +0100

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 <ak@...ux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Cc: Kan Liang <kan.liang@...el.com>
Cc: Maria Dimakopoulou <maria.n.dimakopoulou@...il.com>
Cc: Mark Davies <junk@...af.co.uk>
Cc: Stephane Eranian <eranian@...gle.com>
Link: http://lkml.kernel.org/r/1411569288-5627-1-git-send-email-andi@firstfloor.org
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 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 fc5eb39..4e6cdb0 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)
--
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