linux-kernel - [tip:perf/urgent] perf: x86: Add support for the ANY bit

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Date:	Thu, 21 Jan 2010 13:55:45 GMT
From:	tip-bot for Stephane Eranian <eranian@...gle.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, eranian@...gle.com, hpa@...or.com,
	mingo@...hat.com, a.p.zijlstra@...llo.nl, tglx@...utronix.de,
	mingo@...e.hu
Subject: [tip:perf/urgent] perf: x86: Add support for the ANY bit

Commit-ID:  b27d515a49169e5e2a92d621faac761074a8c5b1
Gitweb:     http://git.kernel.org/tip/b27d515a49169e5e2a92d621faac761074a8c5b1
Author:     Stephane Eranian <eranian@...gle.com>
AuthorDate: Mon, 18 Jan 2010 10:58:01 +0200
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Thu, 21 Jan 2010 13:40:41 +0100

perf: x86: Add support for the ANY bit

Propagate the ANY bit into the fixed counter config for v3 and higher.

Signed-off-by: Stephane Eranian <eranian@...gle.com>
[a.p.zijlstra@...llo.nl: split from larger patch]
Signed-off-by: Peter Zijlstra <a.p.zijlstra@...llo.nl>
LKML-Reference: <4b5430c6.0f975e0a.1bf9.ffff85fe@...google.com>
Signed-off-by: Ingo Molnar <mingo@...e.hu>
---
 arch/x86/include/asm/perf_event.h |    1 +
 arch/x86/kernel/cpu/perf_event.c  |    7 +++++++
 2 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/arch/x86/include/asm/perf_event.h b/arch/x86/include/asm/perf_event.h
index 8d9f854..1380367 100644
--- a/arch/x86/include/asm/perf_event.h
+++ b/arch/x86/include/asm/perf_event.h
@@ -19,6 +19,7 @@
 #define MSR_ARCH_PERFMON_EVENTSEL1			     0x187
 
 #define ARCH_PERFMON_EVENTSEL0_ENABLE			  (1 << 22)
+#define ARCH_PERFMON_EVENTSEL_ANY			  (1 << 21)
 #define ARCH_PERFMON_EVENTSEL_INT			  (1 << 20)
 #define ARCH_PERFMON_EVENTSEL_OS			  (1 << 17)
 #define ARCH_PERFMON_EVENTSEL_USR			  (1 << 16)
diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c
index d616c06..8c1c070 100644
--- a/arch/x86/kernel/cpu/perf_event.c
+++ b/arch/x86/kernel/cpu/perf_event.c
@@ -1343,6 +1343,13 @@ intel_pmu_enable_fixed(struct hw_perf_event *hwc, int __idx)
 		bits |= 0x2;
 	if (hwc->config & ARCH_PERFMON_EVENTSEL_OS)
 		bits |= 0x1;
+
+	/*
+	 * ANY bit is supported in v3 and up
+	 */
+	if (x86_pmu.version > 2 && hwc->config & ARCH_PERFMON_EVENTSEL_ANY)
+		bits |= 0x4;
+
 	bits <<= (idx * 4);
 	mask = 0xfULL << (idx * 4);
 
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