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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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
tools/perf/Documentation/perf-evlist.txt
View File

@ -28,6 +28,10 @@ OPTIONS
--verbose=::
Show all fields.
-g::
--group::
Show event group information.
SEE ALSO
--------
linkperf:perf-record[1], linkperf:perf-list[1],

7
tools/perf/builtin-evlist.c
View File

@ -39,6 +39,8 @@ int cmd_evlist(int argc, const char **argv, const char *prefix __maybe_unused)
OPT_BOOLEAN('F', "freq", &details.freq, "Show the sample frequency"),
OPT_BOOLEAN('v', "verbose", &details.verbose,
"Show all event attr details"),
OPT_BOOLEAN('g', "group", &symbol_conf.event_group,
"Show event group information"),
OPT_END()
};
const char * const evlist_usage[] = {
@ -50,5 +52,10 @@ int cmd_evlist(int argc, const char **argv, const char *prefix __maybe_unused)
if (argc)
usage_with_options(evlist_usage, options);
if (symbol_conf.event_group && (details.verbose || details.freq)) {
pr_err("--group option is not compatible with other options\n");
usage_with_options(evlist_usage, options);
}
return __cmd_evlist(input_name, &details);
}

24
tools/perf/util/evsel.c
View File

@ -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;
}