perf gtk/browser: Add support for event group view

Show group members's overhead also when showing leader's if event
group is enabled.

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: Pekka Enberg <penberg@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranina@google.com>
Link: http://lkml.kernel.org/r/1358845787-1350-13-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 52 insertions, 4 deletions

diff --git a/tools/perf/ui/gtk/hists.c b/tools/perf/ui/gtk/hists.c
index 38be79d4b5c6..c87a98c7efaa 100644
--- a/tools/perf/ui/gtk/hists.c
+++ b/tools/perf/ui/gtk/hists.c
@@ -8,8 +8,7 @@
 
 #define MAX_COLUMNS                     32
 
-static int perf_gtk__percent_color_snprintf(char *buf, size_t size,
-                                            double percent)
+static int __percent_color_snprintf(char *buf, size_t size, double percent)
 {
         int ret = 0;
         const char *markup;
@@ -18,7 +17,7 @@ static int perf_gtk__percent_color_snprintf(char *buf, size_t size,
         if (markup)
                 ret += scnprintf(buf, size, markup);
 
-        ret += scnprintf(buf + ret, size - ret, "%6.2f%%", percent);
+        ret += scnprintf(buf + ret, size - ret, " %6.2f%%", percent);
 
         if (markup)
                 ret += scnprintf(buf + ret, size - ret, "</span>");
@@ -37,7 +36,55 @@ static int __hpp__color_fmt(struct perf_hpp *hpp, struct hist_entry *he,
         if (hists->stats.total_period)
                 percent = 100.0 * get_field(he) / hists->stats.total_period;
 
-        ret = perf_gtk__percent_color_snprintf(hpp->buf, hpp->size, percent);
+        ret = __percent_color_snprintf(hpp->buf, hpp->size, percent);
+
+        if (symbol_conf.event_group) {
+                int prev_idx, idx_delta;
+                struct perf_evsel *evsel = hists_to_evsel(hists);
+                struct hist_entry *pair;
+                int nr_members = evsel->nr_members;
+
+                if (nr_members <= 1)
+                        return ret;
+
+                prev_idx = perf_evsel__group_idx(evsel);
+
+                list_for_each_entry(pair, &he->pairs.head, pairs.node) {
+                        u64 period = get_field(pair);
+                        u64 total = pair->hists->stats.total_period;
+
+                        evsel = hists_to_evsel(pair->hists);
+                        idx_delta = perf_evsel__group_idx(evsel) - prev_idx - 1;
+
+                        while (idx_delta--) {
+                                /*
+                                 * zero-fill group members in the middle which
+                                 * have no sample
+                                 */
+                                ret += __percent_color_snprintf(hpp->buf + ret,
+                                                                hpp->size - ret,
+                                                                0.0);
+                        }
+
+                        percent = 100.0 * period / total;
+                        ret += __percent_color_snprintf(hpp->buf + ret,
+                                                        hpp->size - ret,
+                                                        percent);
+
+                        prev_idx = perf_evsel__group_idx(evsel);
+                }
+
+                idx_delta = nr_members - prev_idx - 1;
+
+                while (idx_delta--) {
+                        /*
+                         * zero-fill group members at last which have no sample
+                         */
+                        ret += __percent_color_snprintf(hpp->buf + ret,
+                                                        hpp->size - ret,
+                                                        0.0);
+                }
+        }
         return ret;
 }
 
@@ -96,6 +143,7 @@ static void perf_gtk__show_hists(GtkWidget *window, struct hists *hists)
         struct perf_hpp hpp = {
                 .buf            = s,
                 .size           = sizeof(s),
+                .ptr            = hists_to_evsel(hists),
         };
 
         nr_cols = 0;