[PATCH RFC 10/10] perf,tools: show counter read result in tui browser title

[kan.liang@intel.com]

From: Kan Liang <kan.liang@intel.com>

There is no sampling for counter read event, so only show its value on
the browser title in tui mode.

Signed-off-by: Kan Liang <kan.liang@intel.com>
---
 tools/perf/ui/browsers/hists.c | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
index e1f28f4..1900363 100644
--- a/tools/perf/ui/browsers/hists.c
+++ b/tools/perf/ui/browsers/hists.c
@@ -1270,12 +1270,22 @@ static int hists__browser_title(struct hists *hists,
 	size_t buflen = sizeof(buf);
 	char ref[30] = " show reference callgraph, ";
 	bool enable_ref = false;
+	int i, idx = 1;
+	struct perf_env *env = evsel->evlist->env;
+	u64 *counter_val = zalloc(evsel->nr_members * sizeof(u64));
 
 	if (symbol_conf.filter_relative) {
 		nr_samples = hists->stats.nr_non_filtered_samples;
 		nr_events = hists->stats.total_non_filtered_period;
 	}
 
+	if (hists->stats.counter_val != NULL) {
+		for (i = 0; i < env->nr_cpus_online; i++) {
+			if ((socket_id < 0) || (env->cpu[i].socket_id == socket_id))
+				counter_val[0] += hists->stats.counter_val[i];
+		}
+	}
+
 	if (perf_evsel__is_group_event(evsel)) {
 		struct perf_evsel *pos;
 
@@ -1292,6 +1302,13 @@ static int hists__browser_title(struct hists *hists,
 				nr_samples += pos_hists->stats.nr_events[PERF_RECORD_SAMPLE];
 				nr_events += pos_hists->stats.total_period;
 			}
+			if (pos_hists->stats.counter_val != NULL) {
+				for (i = 0; i < env->nr_cpus_online; i++) {
+					if ((socket_id < 0) || (env->cpu[i].socket_id == socket_id))
+						counter_val[idx] += pos_hists->stats.counter_val[i];
+				}
+			}
+			idx++;
 		}
 	}
 
@@ -1318,6 +1335,26 @@ static int hists__browser_title(struct hists *hists,
 	if (socket_id > -1)
 		printed += scnprintf(bf + printed, size - printed,
 				    ", Processor Socket: %d", socket_id);
+
+	if (hists->stats.counter_val != NULL)
+		printed += scnprintf(bf + printed, size - printed,
+				    ", %s: %" PRIu64, evsel->name, counter_val[0]);
+
+	if (perf_evsel__is_group_event(evsel)) {
+		struct perf_evsel *pos;
+
+		idx = 1;
+		for_each_group_member(pos, evsel) {
+			const struct hists *pos_hists = evsel__hists(pos);
+
+			if (pos_hists->stats.counter_val != NULL)
+				printed += scnprintf(bf + printed, size - printed,
+						     ", %s: %" PRIu64, pos->name, counter_val[idx]);
+			idx++;
+		}
+	}
+	free(counter_val);
+
 	if (!is_report_browser(hbt)) {
 		struct perf_top *top = hbt->arg;
 
-- 
1.8.3.1