linux-kernel - [PATCH 2/2] perf, tools: Add override support for event list CPUID

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Message-Id: <1432835361-16964-3-git-send-email-andi@firstfloor.org>
Date:	Thu, 28 May 2015 10:49:21 -0700
From:	Andi Kleen <andi@...stfloor.org>
To:	sukadev@...ux.vnet.ibm.com
Cc:	jolsa@...hat.com, mingo@...nel.org, acme@...nel.org,
	linux-kernel@...r.kernel.org, Andi Kleen <ak@...ux.intel.com>
Subject: [PATCH 2/2] perf, tools: Add override support for event list CPUID

From: Andi Kleen <ak@...ux.intel.com>

Add a PERF_CPUID variable to override the CPUID of the current CPU.
This is useful for testing, so that all event lists can be tested on a single
system.

Signed-off-by: Andi Kleen <ak@...ux.intel.com>
---
 tools/perf/util/pmu.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
index ba50300..5500126 100644
--- a/tools/perf/util/pmu.c
+++ b/tools/perf/util/pmu.c
@@ -474,7 +474,9 @@ static int pmu_add_cpu_aliases(void *data)
 	struct pmu_event *pe;
 	char *cpuid;
 
-	cpuid = get_cpuid_str();
+	cpuid = getenv("PERF_CPUID");
+	if (!cpuid)
+		cpuid = get_cpuid_str();
 	if (!cpuid)
 		return 0;
 
-- 
2.1.0

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