Commit-ID: fc06e2a5aad9fcf7efaabd7550ac31f648d2f2bc
Gitweb: http://git.kernel.org/tip/fc06e2a5aad9fcf7efaabd7550ac31f648d2f2bc
Author: Andi Kleen <ak@xxxxxxxxxxxxxxx>
AuthorDate: Thu, 15 Sep 2016 15:24:46 -0700
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Mon, 3 Oct 2016 21:35:46 -0300
perf pmu: Add override support for event list CPUID
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@xxxxxxxxxxxxxxx>
Signed-off-by: Sukadev Bhattiprolu <sukadev@xxxxxxxxxxxxxxxxxx>
Acked-by: Ingo Molnar <mingo@xxxxxxxxxx>
Acked-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Madhavan Srinivasan <maddy@xxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: linuxppc-dev@xxxxxxxxxxxxxxxx
Link: http://lkml.kernel.org/r/1473978296-20712-10-git-send-email-sukadev@xxxxxxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
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 9dc3506..79242cf 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++];
--
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