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authorJin Yao <yao.jin@linux.intel.com>2018-05-21 17:57:44 +0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2018-05-21 20:40:54 +0300
commite2bdbe80a0b7dea9ba73582701b8a67c01e1da4f (patch)
treeba58f3373ad835f91a99ace73487b156128c4dc2 /tools/perf/util/evlist.h
parent2996123e7e589d78e73cfeb7e7f14d49127eb1b0 (diff)
downloadlinux-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.h')
-rw-r--r--tools/perf/util/evlist.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h
index 6c41b2f78713..dc66436add98 100644
--- a/tools/perf/util/evlist.h
+++ b/tools/perf/util/evlist.h
@@ -309,4 +309,7 @@ struct perf_evsel *perf_evlist__event2evsel(struct perf_evlist *evlist,
union perf_event *event);
bool perf_evlist__exclude_kernel(struct perf_evlist *evlist);
+
+void perf_evlist__force_leader(struct perf_evlist *evlist);
+
#endif /* __PERF_EVLIST_H */