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perf evlist: Add --group option

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Add '-g/--group' option for showing event groups.  For simplicity it is
currently not compatible with other options.

  $ perf evlist --group
  {ref-cycles,cycles}

  $ perf evlist
  ref-cycles
  cycles

Suggested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1358845787-1350-20-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Namhyung Kim
2013-01-22 18:09:47 +09:00
committed by Arnaldo Carvalho de Melo
parent 00c7e1f10c
commit e6ab07d027
3 changed files with 33 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
tools/perf/util/evsel.c
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@@ -1389,7 +1389,27 @@ int perf_evsel__fprintf(struct perf_evsel *evsel,
struct perf_attr_details *details, FILE *fp)
{
bool first = true;
int printed = fprintf(fp, "%s", perf_evsel__name(evsel));
int printed = 0;
if (symbol_conf.event_group) {
struct perf_evsel *pos;
if (!perf_evsel__is_group_leader(evsel))
return 0;
if (evsel->nr_members > 1)
printed += fprintf(fp, "%s{", evsel->group_name ?: "");
printed += fprintf(fp, "%s", perf_evsel__name(evsel));
for_each_group_member(pos, evsel)
printed += fprintf(fp, ",%s", perf_evsel__name(pos));
if (evsel->nr_members > 1)
printed += fprintf(fp, "}");
goto out;
}
printed += fprintf(fp, "%s", perf_evsel__name(evsel));
if (details->verbose || details->freq) {
printed += comma_fprintf(fp, &first, " sample_freq=%" PRIu64,
@@ -1430,7 +1450,7 @@ int perf_evsel__fprintf(struct perf_evsel *evsel,
if_print(bp_type);
if_print(branch_sample_type);
}
out:
fputc('\n', fp);
return ++printed;
}