[PATCH RFC 07/10] perf,report: handle PERF_RECORD_COUNTER_READ

[kan . liang]

From: Kan Liang <kan.liang@xxxxxxxxx>

Add function to process PERF_RECORD_COUNTER_READ RECORD type event.
Simply print event name, cpu id, val and time information in
perf report -D.

Signed-off-by: Kan Liang <kan.liang@xxxxxxxxx>
---
 tools/perf/builtin-report.c | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index e4e3f14..1d8dce2 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -207,6 +207,29 @@ static int process_read_event(struct perf_tool *tool,
 	return 0;
 }
 
+static int process_counter_read_event(struct perf_tool *tool __maybe_unused,
+				      union perf_event *event,
+				      struct perf_session *session)
+{
+	struct perf_evlist *evlist = session->evlist;
+	struct perf_evsel *evsel;
+
+	evlist__for_each(evlist, evsel) {
+		if (evsel->idx == event->counter_read.idx)
+			break;
+	}
+
+	hists__inc_nr_events(evsel__hists(evsel), event->header.type);
+
+	dump_printf(": %s CPU %d: val %" PRIu64 " ena %" PRIu64 " run %" PRIu64 " \n",
+		    evsel ? perf_evsel__name(evsel) : "FAIL",
+		    event->counter_read.cpu,
+		    event->counter_read.val,
+		    event->counter_read.ena,
+		    event->counter_read.run);
+	return 0;
+}
+
 /* For pipe mode, sample_type is not currently set */
 static int report__setup_sample_type(struct report *rep)
 {
@@ -632,6 +655,7 @@ int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused)
 			.fork		 = perf_event__process_fork,
 			.lost		 = perf_event__process_lost,
 			.read		 = process_read_event,
+			.counter_read	 = process_counter_read_event,
 			.attr		 = perf_event__process_attr,
 			.tracing_data	 = perf_event__process_tracing_data,
 			.build_id	 = perf_event__process_build_id,
-- 
1.8.3.1

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