perf stat: Reset aggr counts for each interval

The evsel->stats->aggr->count should be reset for interval processing
since we want to use the values directly for display.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Athira Jajeev <atrajeev@linux.vnet.ibm.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Link: https://lore.kernel.org/r/20221018020227.85905-14-namhyung@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/builtin-stat.c

@@ -492,6 +492,8 @@ static void process_interval(void)
 	diff_timespec(&rs, &ts, &ref_time);
 
 	perf_stat__reset_shadow_per_stat(&rt_stat);
+	evlist__reset_aggr_stats(evsel_list);
+
 	read_counters(&rs);
 
 	if (STAT_RECORD) {
@@ -965,6 +967,7 @@ static int __run_perf_stat(int argc, const char **argv, int run_idx)
 
 		evlist__copy_prev_raw_counts(evsel_list);
 		evlist__reset_prev_raw_counts(evsel_list);
+		evlist__reset_aggr_stats(evsel_list);
 		perf_stat__reset_shadow_per_stat(&rt_stat);
 	} else {
 		update_stats(&walltime_nsecs_stats, t1 - t0);

tools/perf/util/stat.c

@@ -130,17 +130,23 @@ static void perf_stat_evsel_id_init(struct evsel *evsel)
 	}
 }
 
-static void evsel__reset_stat_priv(struct evsel *evsel)
+static void evsel__reset_aggr_stats(struct evsel *evsel)
 {
 	struct perf_stat_evsel *ps = evsel->stats;
 	struct perf_stat_aggr *aggr = ps->aggr;
 
-	init_stats(&ps->res_stats);
-
 	if (aggr)
 		memset(aggr, 0, sizeof(*aggr) * ps->nr_aggr);
 }
 
+static void evsel__reset_stat_priv(struct evsel *evsel)
+{
+	struct perf_stat_evsel *ps = evsel->stats;
+
+	init_stats(&ps->res_stats);
+	evsel__reset_aggr_stats(evsel);
+}
+
 static int evsel__alloc_aggr_stats(struct evsel *evsel, int nr_aggr)
 {
 	struct perf_stat_evsel *ps = evsel->stats;
@@ -276,6 +282,14 @@ void evlist__reset_stats(struct evlist *evlist)
 	}
 }
 
+void evlist__reset_aggr_stats(struct evlist *evlist)
+{
+	struct evsel *evsel;
+
+	evlist__for_each_entry(evlist, evsel)
+		evsel__reset_aggr_stats(evsel);
+}
+
 void evlist__reset_prev_raw_counts(struct evlist *evlist)
 {
 	struct evsel *evsel;

tools/perf/util/stat.h

@@ -276,6 +276,7 @@ void evlist__copy_prev_raw_counts(struct evlist *evlist);
 void evlist__save_aggr_prev_raw_counts(struct evlist *evlist);
 
 int evlist__alloc_aggr_stats(struct evlist *evlist, int nr_aggr);
+void evlist__reset_aggr_stats(struct evlist *evlist);
 
 int perf_stat_process_counter(struct perf_stat_config *config,
 			      struct evsel *counter);