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| author | Jin Yao <yao.jin@linux.intel.com> | 2018-05-21 17:57:44 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2018-05-21 20:40:54 +0300 |
| commit | e2bdbe80a0b7dea9ba73582701b8a67c01e1da4f (patch) | |
| tree | ba58f3373ad835f91a99ace73487b156128c4dc2 /tools/perf/util/evlist.c | |
| parent | 2996123e7e589d78e73cfeb7e7f14d49127eb1b0 (diff) | |
| download | linux-e2bdbe80a0b7dea9ba73582701b8a67c01e1da4f.tar.xz | |
perf evlist: Introduce force_leader() method
For non-explicit group (e.g. those created with -e '{eventA,eventB}'),
'perf report' supports a option '--group' which can enable group output.
We also need to support 'perf annotate' with the same '--group'.
Create a new function perf_evlist__force_leader() which contains common
code to force setting the group leader.
Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1526914666-31839-2-git-send-email-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/evlist.c')
| -rw-r--r-- | tools/perf/util/evlist.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index a59281d64368..e7a4b31a84fb 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -1795,3 +1795,18 @@ bool perf_evlist__exclude_kernel(struct perf_evlist *evlist) return true; } + +/* + * Events in data file are not collect in groups, but we still want + * the group display. Set the artificial group and set the leader's + * forced_leader flag to notify the display code. + */ +void perf_evlist__force_leader(struct perf_evlist *evlist) +{ + if (!evlist->nr_groups) { + struct perf_evsel *leader = perf_evlist__first(evlist); + + perf_evlist__set_leader(evlist); + leader->forced_leader = true; + } +} |