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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>
This commit is contained in:
Andi Kleen 2016-10-13 14:15:24 -07:00 committed by Arnaldo Carvalho de Melo
parent b3151ea500
commit fb96706369
1 changed files with 5 additions and 1 deletions
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4
tools/perf/util/pmu.c
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@ -504,6 +504,7 @@ static void pmu_add_cpu_aliases(struct list_head *head)
struct pmu_events_map *map;
struct pmu_event *pe;
char *cpuid;
static bool printed;
cpuid = getenv("PERF_CPUID");
if (cpuid)
@ -513,7 +514,10 @@ static void pmu_add_cpu_aliases(struct list_head *head)
if (!cpuid)
return;
if (!printed) {
pr_debug("Using CPUID %s\n", cpuid);
printed = true;
}
i = 0;
while (1) {