From: Namhyung Kim Date: Sun, 9 Aug 2015 06:45:24 +0000 (+0900) Subject: perf evlist: Be more specific on -F/--freq X-Git-Tag: firefly_0821_release~176^2~1201^2~8^2 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=4605bb55b91449a1a953a51f0334d3bc02351adb;p=firefly-linux-kernel-4.4.55.git perf evlist: Be more specific on -F/--freq Currently perf evlist -F shows the number as if it's always sampling frequency. But we now support per-event freq/period settings. So it'd better to show more detailed info whether it's freq or period. $ perf record -e 'cpu/config=1/,cpu/config=2,period=300000/' sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.017 MB perf.data ] $ perf evlist -F cpu/config=1/: sample_freq=4000 cpu/config=2,period=300000/: sample_period=300000 Signed-off-by: Namhyung Kim Acked-by: Jiri Olsa Tested-by: Arnaldo Carvalho de Melo Cc: David Ahern Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1439102724-14079-2-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index f664a22b5fea..04fddddc6b6f 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -2158,8 +2158,13 @@ int perf_evsel__fprintf(struct perf_evsel *evsel, printed += perf_event_attr__fprintf(fp, &evsel->attr, __print_attr__fprintf, &first); } else if (details->freq) { - printed += comma_fprintf(fp, &first, " sample_freq=%" PRIu64, - (u64)evsel->attr.sample_freq); + const char *term = "sample_freq"; + + if (!evsel->attr.freq) + term = "sample_period"; + + printed += comma_fprintf(fp, &first, " %s=%" PRIu64, + term, (u64)evsel->attr.sample_freq); } out: fputc('\n', fp);