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authorDavid Ahern <dsahern@gmail.com>2013-09-28 14:27:58 -0600
committerArnaldo Carvalho de Melo <acme@redhat.com>2013-10-11 12:17:42 -0300
commit62d3b617c02785a4f1fbde8d93ca77a0b33d8454 (patch)
treee7f8c7b1a2531a1e62ac374a425b8ab1af2869d4
parenta65cb4b9f8a777a715371c63c0525408048cea3e (diff)
downloadop-kernel-dev-62d3b617c02785a4f1fbde8d93ca77a0b33d8454.zip
op-kernel-dev-62d3b617c02785a4f1fbde8d93ca77a0b33d8454.tar.gz
perf stat: Fix misleading message when specifying cpu list or system wide
The "perf stat" tool displays the command run in its summary output which is misleading when using a cpu list or system wide collection. Before: perf stat -a -- sleep 1 Performance counter stats for 'sleep 1': 16152.670249 task-clock # 16.132 CPUs utilized 417 context-switches # 0.002 M/sec 7 cpu-migrations # 0.030 K/sec ... After: perf stat -a -- sleep 1 Performance counter stats for 'system wide': 16206.931120 task-clock # 16.144 CPUs utilized 395 context-switches # 0.002 M/sec 5 cpu-migrations # 0.030 K/sec ... or perf stat -C1 -- sleep 1 Performance counter stats for 'CPU(s) 1': 1001.669257 task-clock # 1.000 CPUs utilized 4,264 context-switches # 0.004 M/sec 3 cpu-migrations # 0.003 K/sec ... Signed-off-by: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung.kim@lge.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1380400080-9211-2-git-send-email-dsahern@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
-rw-r--r--tools/perf/builtin-stat.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index fb02b53..c8a2662 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -1229,7 +1229,11 @@ static void print_stat(int argc, const char **argv)
if (!csv_output) {
fprintf(output, "\n");
fprintf(output, " Performance counter stats for ");
- if (!perf_target__has_task(&target)) {
+ if (target.system_wide)
+ fprintf(output, "\'system wide");
+ else if (target.cpu_list)
+ fprintf(output, "\'CPU(s) %s", target.cpu_list);
+ else if (!perf_target__has_task(&target)) {
fprintf(output, "\'%s", argv[0]);
for (i = 1; i < argc; i++)
fprintf(output, " %s", argv[i]);
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