Commit-ID: 4605bb55b91449a1a953a51f0334d3bc02351adb
Gitweb: http://git.kernel.org/tip/4605bb55b91449a1a953a51f0334d3bc02351adb
Author: Namhyung Kim <namhyung@xxxxxxxxxx>
AuthorDate: Sun, 9 Aug 2015 15:45:24 +0900
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Mon, 10 Aug 2015 17:20:26 -0300
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 <namhyung@xxxxxxxxxx>
Acked-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Tested-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Link: http://lkml.kernel.org/r/1439102724-14079-2-git-send-email-namhyung@xxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/util/evsel.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index f664a22..04fdddd 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);
--
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