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Groups > linux.kernel > #1495163
| From | Arnaldo Carvalho de Melo <acme@kernel.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH 14/22] perf pmu: Add override support for event list CPUID |
| Date | 2016-10-04 04:50 +0200 |
| Message-ID | <sonXQ-4PN-1@gated-at.bofh.it> (permalink) |
| References | <sonO9-4Mz-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
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: Ingo Molnar <mingo@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: linuxppc-dev@lists.ozlabs.org
Link: http://lkml.kernel.org/r/1473978296-20712-10-git-send-email-sukadev@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
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 9dc3506d23fc..79242cf9bb79 100644
--- a/tools/perf/util/pmu.c
+++ b/tools/perf/util/pmu.c
@@ -501,10 +501,16 @@ static void 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;
+ pr_debug("Using CPUID %s\n", cpuid);
+
i = 0;
while (1) {
map = &pmu_events_map[i++];
--
2.7.4
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[GIT PULL 00/22] perf/core improvements and fixes Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-10-04 04:40 +0200 [PATCH 02/22] perf tools: Experiment with cppcheck Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-10-04 04:40 +0200 [PATCH 01/22] perf probe: Check if *ptr2 is zero and not ptr2 Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-10-04 04:40 +0200 [PATCH 03/22] tools build: Add support for host programs format Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-10-04 04:40 +0200 [PATCH 15/22] perf jevents: Add support for long descriptions Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-10-04 04:40 +0200 [PATCH 04/22] tools build: Make fixdep a hostprog Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-10-04 04:40 +0200 [PATCH 14/22] perf pmu: Add override support for event list CPUID Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-10-04 04:50 +0200 [PATCH 11/22] perf pmu: Support alias descriptions Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-10-04 04:50 +0200 [PATCH 06/22] perf jevents: Program to convert JSON file Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-10-04 04:50 +0200 [PATCH 07/22] perf pmu: Use pmu_events table to create aliases Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-10-04 04:50 +0200 [PATCH 09/22] perf tools: Support CPU id matching for x86 v2 Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-10-04 04:50 +0200 [PATCH 19/22] perf tools: Allow period= in perf stat CPU event descriptions. Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-10-04 04:50 +0200 [PATCH 08/22] perf powerpc: Support CPU ID matching for Powerpc Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-10-04 04:50 +0200 [PATCH 17/22] perf list jevents: Add support for event list topics Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-10-04 04:50 +0200 [PATCH 10/22] perf jevents: Handle header line in mapfile Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-10-04 04:50 +0200 [PATCH 16/22] perf list: Support long jevents descriptions Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-10-04 04:50 +0200 [PATCH 21/22] perf pmu-events: Fix fixed counters on Intel Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-10-04 04:50 +0200 [PATCH 12/22] perf tools: Query terminal width and use in perf list Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-10-04 04:50 +0200 Re: [GIT PULL 00/22] perf/core improvements and fixes Ingo Molnar <mingo@kernel.org> - 2016-10-04 10:10 +0200
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