[PATCH 14/22] perf pmu: Add override support for event list CPUID
From: Arnaldo Carvalho de Melo <acme@kernel.org>
Date: 2016-10-04 02:37:51
Also in:
lkml
Subsystem:
performance events subsystem, the rest · Maintainers:
Peter Zijlstra, Ingo Molnar, Arnaldo Carvalho de Melo, Namhyung Kim, Linus Torvalds
From: Andi Kleen <redacted> 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 <redacted> Signed-off-by: Sukadev Bhattiprolu <redacted> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Jiri Olsa <redacted> Cc: Madhavan Srinivasan <redacted> 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 <redacted> --- 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++];
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2.7.4