1 files changed, 27 insertions, 6 deletions

diff --git a/tools/perf/util/events_stats.h b/tools/perf/util/events_stats.h
index 859cb34fcff2..dcff697ed252 100644
--- a/tools/perf/util/events_stats.h
+++ b/tools/perf/util/events_stats.h
@@ -18,23 +18,33 @@
  * PERF_RECORD_LOST_SAMPLES event. The number of lost-samples events is stored
  * in .nr_events[PERF_RECORD_LOST_SAMPLES] while total_lost_samples tells
  * exactly how many samples the kernel in fact dropped, i.e. it is the sum of
- * all struct perf_record_lost_samples.lost fields reported.
+ * all struct perf_record_lost_samples.lost fields reported without setting the
+ * misc field in the header.
+ *
+ * The BPF program can discard samples according to the filter expressions given
+ * by the user.  This number is kept in a BPF map and dumped at the end of perf
+ * record in a PERF_RECORD_LOST_SAMPLES event.  To differentiate it from other
+ * lost samples, perf tools sets PERF_RECORD_MISC_LOST_SAMPLES_BPF flag in the
+ * header.misc field.  The number of dropped-samples events is stored in
+ * .nr_events[PERF_RECORD_LOST_SAMPLES] while total_dropped_samples tells
+ * exactly how many samples the BPF program in fact dropped, i.e. it is the sum
+ * of all struct perf_record_lost_samples.lost fields reported with the misc
+ * field set in the header.
  *
  * The total_period is needed because by default auto-freq is used, so
- * multipling nr_events[PERF_EVENT_SAMPLE] by a frequency isn't possible to get
- * the total number of low level events, it is necessary to to sum all struct
+ * multiplying nr_events[PERF_EVENT_SAMPLE] by a frequency isn't possible to get
+ * the total number of low level events, it is necessary to sum all struct
  * perf_record_sample.period and stash the result in total_period.
  */
 struct events_stats {
-	u64 total_period;
-	u64 total_non_filtered_period;
 	u64 total_lost;
 	u64 total_lost_samples;
+	u64 total_dropped_samples;
 	u64 total_aux_lost;
 	u64 total_aux_partial;
+	u64 total_aux_collision;
 	u64 total_invalid_chains;
 	u32 nr_events[PERF_RECORD_HEADER_MAX];
-	u32 nr_non_filtered_samples;
 	u32 nr_lost_warned;
 	u32 nr_unknown_events;
 	u32 nr_invalid_chains;
@@ -44,6 +54,17 @@ struct events_stats {
 	u32 nr_proc_map_timeout;
 };
 
+struct hists_stats {
+	u64 total_period;
+	u64 total_non_filtered_period;
+	u64 total_latency;
+	u64 total_non_filtered_latency;
+	u32 nr_samples;
+	u32 nr_non_filtered_samples;
+	u32 nr_lost_samples;
+	u32 nr_dropped_samples;
+};
+
 void events_stats__inc(struct events_stats *stats, u32 type);
 
 size_t events_stats__fprintf(struct events_stats *stats, FILE *fp);