perf report: Make another loop for linking group hists

Now the event grouping viewing requires linking all member hists in a
group to the leader's.  Thus hists__output_resort should be called after
linking all events in evlist.

Introduce symbol_conf.event_group flag to determine whether the feature
is enabled or not.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
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/1358845787-1350-5-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 47a8644..fd2503a 100644 (file)
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -416,8 +416,16 @@ static int __cmd_report(struct perf_report *rep)
                        hists->symbol_filter_str = rep->symbol_filter_str;
 
                hists__collapse_resort(hists);
-               hists__output_resort(hists);
                nr_samples += hists->stats.nr_events[PERF_RECORD_SAMPLE];
+
+               /* Non-group events are considered as leader */
+               if (symbol_conf.event_group &&
+                   !perf_evsel__is_group_leader(pos)) {
+                       struct hists *leader_hists = &pos->leader->hists;
+
+                       hists__match(leader_hists, hists);
+                       hists__link(leader_hists, hists);
+               }
        }
 
        if (nr_samples == 0) {
@@ -425,6 +433,9 @@ static int __cmd_report(struct perf_report *rep)
                goto out_delete;
        }
 
+       list_for_each_entry(pos, &session->evlist->entries, node)
+               hists__output_resort(&pos->hists);
+
        if (use_browser > 0) {
                if (use_browser == 1) {
                        perf_evlist__tui_browse_hists(session->evlist, help,

diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index d97377a..b62ca37 100644 (file)
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -96,7 +96,8 @@ struct symbol_conf {
                        initialized,
                        kptr_restrict,
                        annotate_asm_raw,
-                       annotate_src;
+                       annotate_src,
+                       event_group;
        const char      *vmlinux_name,
                        *kallsyms_name,
                        *source_prefix,