perf pmu: Only print Using CPUID message once
With uncore event aliases which are duplicated over multiple PMUs the "Using CPUID" message with -v could be printed many times. Only print it once. Signed-off-by: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Stephane Eranian <eranian@google.com> Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Link: http://lkml.kernel.org/r/1476393332-20732-3-git-send-email-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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@ -504,6 +504,7 @@ static void pmu_add_cpu_aliases(struct list_head *head)
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struct pmu_events_map *map;
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struct pmu_event *pe;
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char *cpuid;
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static bool printed;
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cpuid = getenv("PERF_CPUID");
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if (cpuid)
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@ -513,7 +514,10 @@ static void pmu_add_cpu_aliases(struct list_head *head)
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if (!cpuid)
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return;
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pr_debug("Using CPUID %s\n", cpuid);
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if (!printed) {
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pr_debug("Using CPUID %s\n", cpuid);
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printed = true;
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}
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i = 0;
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while (1) {
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