linux-kernel - [PATCH -tip] x86: perf_counter AMD supports performance monitoring for K7

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Message-Id: <1244659775.4255.1.camel@ht.satnam>
Date:	Thu, 11 Jun 2009 00:19:35 +0530
From:	Jaswinder Singh Rajput <jaswinder@...nel.org>
To:	Ingo Molnar <mingo@...e.hu>, x86 maintainers <x86@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH -tip] x86: perf_counter AMD supports performance monitoring
 for K7


Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@...il.com>
---
 arch/x86/kernel/cpu/perf_counter.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kernel/cpu/perf_counter.c b/arch/x86/kernel/cpu/perf_counter.c
index 240ca56..5d56742 100644
--- a/arch/x86/kernel/cpu/perf_counter.c
+++ b/arch/x86/kernel/cpu/perf_counter.c
@@ -1436,6 +1436,10 @@ static int intel_pmu_init(void)
 
 static int amd_pmu_init(void)
 {
+	/* performance-monitoring supported from K7 */
+	if (boot_cpu_data.x86 < 7)
+		return -ENODEV;
+
 	x86_pmu = amd_pmu;
 
 	switch (boot_cpu_data.x86) {
-- 
1.6.1.1



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