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Groups > linux.kernel > #1213564

[PATCH v16 09/16] perf, tools: Add override support for event list CPUID

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

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

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
---

v2: Fix double free in earlier version.
    Print actual CPUID being used with verbose option.
---
 tools/perf/util/pmu.c |    8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
index e4cb21e..ca01aea 100644
--- a/tools/perf/util/pmu.c
+++ b/tools/perf/util/pmu.c
@@ -477,10 +477,16 @@ static int pmu_add_cpu_aliases(struct list_head *head)
 	struct pmu_event *pe;
 	char *cpuid;
 
-	cpuid = get_cpuid_str();
+	cpuid = getenv("PERF_CPUID");
+	if (cpuid)
+		cpuid = strdup(cpuid);
+	if (!cpuid)
+		cpuid = get_cpuid_str();
 	if (!cpuid)
 		return 0;
 
+	pr_debug("Using CPUID %s\n", cpuid);
+
 	i = 0;
 	while (1) {
 		map = &pmu_events_map[i++];
-- 
1.7.9.5

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Thread

[PATCH v16 00/16] perf, tools: Add support for PMU events in JSON format Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> - 2015-08-26 08:10 +0200
  [PATCH v16 15/16] perf, tools: Handle header line in mapfile Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> - 2015-08-26 08:10 +0200
  [PATCH v16 14/16] perf, tools: Add support for event list topics Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> - 2015-08-26 08:10 +0200
  [PATCH v16 04/16] perf, tools: Support CPU ID matching for Powerpc Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> - 2015-08-26 08:10 +0200
  [PATCH v16 02/16] perf, tools, jevents: Program to convert JSON file to C style file Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> - 2015-08-26 08:10 +0200
  [PATCH v16 12/16] perf, tools: Support long descriptions with perf list Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> - 2015-08-26 08:20 +0200
  [PATCH v16 09/16] perf, tools: Add override support for event list CPUID Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> - 2015-08-26 08:20 +0200
  [PATCH v16 16/16] perf, tools: Add README for info on parsing JSON/map files Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> - 2015-08-26 08:20 +0200
  [PATCH v16 11/16] perf, tools: Add alias support for long descriptions Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> - 2015-08-26 08:20 +0200
  [PATCH v16 13/16] perf, tools, jevents: Add support for event topics Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> - 2015-08-26 08:20 +0200
  [PATCH v16 05/16] perf, tools: Support CPU id matching for x86 v2 Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> - 2015-08-26 08:20 +0200
  [PATCH v16 10/16] perf, tools, jevents: Add support for long descriptions Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> - 2015-08-26 08:20 +0200
  [PATCH v16 01/16] perf, tools: Add jsmn `jasmine' JSON parser Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> - 2015-08-26 08:20 +0200
  [PATCH v16 08/16] perf, tools: Add a --no-desc flag to perf list Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> - 2015-08-26 08:20 +0200
  Re: [PATCH v16 00/16] perf, tools: Add support for PMU events in  JSON format Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> - 2015-08-31 21:10 +0200

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