[PATCH 02/11] perf, tools: Only print Using CPUID message once

[Andi Kleen]

From: Andi Kleen <a...@linux.intel.com>

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 <a...@linux.intel.com>
---
 tools/perf/util/pmu.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
index 73a594ff9b9b..739e8aa63b78 100644
--- a/tools/perf/util/pmu.c
+++ b/tools/perf/util/pmu.c
@@ -510,6 +510,7 @@ 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)
@@ -519,7 +520,10 @@ 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) {
-- 
2.5.5