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>
diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
index b1474dc..d7174f3 100644
--- a/tools/perf/util/pmu.c
+++ b/tools/perf/util/pmu.c
@@ -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;
- pr_debug("Using CPUID %s\n", cpuid);
+ if (!printed) {
+ pr_debug("Using CPUID %s\n", cpuid);
+ printed = true;
+ }
i = 0;
while (1) {