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Groups > linux.kernel > #1248631

[PATCH 36/57] perf stat record: Write stat round events on record

From Jiri Olsa <jolsa@kernel.org>
Newsgroups linux.kernel
Subject [PATCH 36/57] perf stat record: Write stat round events on record
Date 2015-10-16 13:00 +0200
Message-ID <qkaTU-3YR-31@gated-at.bofh.it> (permalink)
References <qkaKe-3Nh-3@gated-at.bofh.it>
Organization linux.* mail to news gateway

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Writing stat round events on 'perf stat record' for
each interval round. In non interval mode we store
round event after the last stat event.

Link: http://lkml.kernel.org/n/tip-a43rs4c6szofeuo2gjlcpm0h@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
 tools/perf/builtin-stat.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index 81ba5955b1da..f053447fde6e 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -205,6 +205,16 @@ static int process_synthesized_event(struct perf_tool *tool __maybe_unused,
 	return 0;
 }
 
+static int write_stat_round_event(u64 time, u64 type)
+{
+	return perf_event__synthesize_stat_round(NULL, time, type,
+						 process_synthesized_event,
+						 NULL);
+}
+
+#define WRITE_STAT_ROUND_EVENT(time, interval) \
+	write_stat_round_event(time, PERF_STAT_ROUND_TYPE__ ## interval)
+
 #define SID(e, x, y) xyarray__entry(e->sample_id, x, y)
 
 static int
@@ -280,6 +290,11 @@ static void process_interval(void)
 	clock_gettime(CLOCK_MONOTONIC, &ts);
 	diff_timespec(&rs, &ts, &ref_time);
 
+	if (STAT_RECORD) {
+		if (WRITE_STAT_ROUND_EVENT(rs.tv_sec * NSECS_PER_SEC + rs.tv_nsec, INTERVAL))
+			pr_err("failed to write stat round event\n");
+	}
+
 	print_counters(&rs, 0, NULL);
 }
 
@@ -1577,6 +1592,11 @@ int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused)
 	if (STAT_RECORD) {
 		int fd = perf_data_file__fd(&perf_stat.file);
 
+		if (!interval) {
+			if (WRITE_STAT_ROUND_EVENT(walltime_nsecs_stats.max, FINAL))
+				pr_err("failed to write stat round event\n");
+		}
+
 		if (!perf_stat.file.is_pipe) {
 			perf_stat.session->header.data_size += perf_stat.bytes_written;
 			perf_session__write_header(perf_stat.session, evsel_list, fd, true);
-- 
2.4.3

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Thread

[PATCHv4 00/57] perf stat: Add scripting support Jiri Olsa <jolsa@kernel.org> - 2015-10-16 12:50 +0200
  [PATCH 50/57] perf script: Check output fields only for samples Jiri Olsa <jolsa@kernel.org> - 2015-10-16 12:50 +0200
  [PATCH 27/57] perf tools: Move id_offset out of struct perf_evsel union Jiri Olsa <jolsa@kernel.org> - 2015-10-16 12:50 +0200
  [PATCH 41/57] perf stat report: Cache aggregated map entries in extra cpumap Jiri Olsa <jolsa@kernel.org> - 2015-10-16 12:50 +0200
  [PATCH 35/57] perf stat record: Write stat events on record Jiri Olsa <jolsa@kernel.org> - 2015-10-16 12:50 +0200
  [PATCH 06/57] perf tools: Add cpu_map event synthesize function Jiri Olsa <jolsa@kernel.org> - 2015-10-16 12:50 +0200
  [PATCH 38/57] perf stat record: Synthesize attr update events Jiri Olsa <jolsa@kernel.org> - 2015-10-16 12:50 +0200
  [PATCH 25/57] perf report: Display newly added events in raw dump Jiri Olsa <jolsa@kernel.org> - 2015-10-16 12:50 +0200
  [PATCH 43/57] perf stat report: Process cpu/threads maps Jiri Olsa <jolsa@kernel.org> - 2015-10-16 12:50 +0200
  [PATCH 08/57] perf tools: Add cpu_map__new_event function Jiri Olsa <jolsa@kernel.org> - 2015-10-16 12:50 +0200
  [PATCH 30/57] perf stat record: Add record command Jiri Olsa <jolsa@kernel.org> - 2015-10-16 12:50 +0200
  [PATCH 39/57] perf tools: Make cpu_map__build_map global Jiri Olsa <jolsa@kernel.org> - 2015-10-16 12:50 +0200
  [PATCH 49/57] perf stat report: Allow to override aggr_mode Jiri Olsa <jolsa@kernel.org> - 2015-10-16 12:50 +0200
  [PATCH 03/57] perf tools: Add thread_map__new_event function Jiri Olsa <jolsa@kernel.org> - 2015-10-16 12:50 +0200
  [PATCH 40/57] perf tools: Add data arg to cpu_map__build_map callback Jiri Olsa <jolsa@kernel.org> - 2015-10-16 12:50 +0200
  [PATCH 42/57] perf stat report: Add report command Jiri Olsa <jolsa@kernel.org> - 2015-10-16 12:50 +0200
  [PATCH 15/57] perf tools: Add stat event read function Jiri Olsa <jolsa@kernel.org> - 2015-10-16 13:00 +0200
  [PATCH 11/57] perf tools: Add stat config event synthesize function Jiri Olsa <jolsa@kernel.org> - 2015-10-16 13:00 +0200
  [PATCH 33/57] perf stat record: Store events IDs in perf data file Jiri Olsa <jolsa@kernel.org> - 2015-10-16 13:00 +0200
  [PATCH 21/57] perf tools: Add attr_update event scale type Jiri Olsa <jolsa@kernel.org> - 2015-10-16 13:00 +0200
  [PATCH 18/57] perf tools: Add stat events fprintf functions Jiri Olsa <jolsa@kernel.org> - 2015-10-16 13:00 +0200
  [PATCH 09/57] perf tools: Add perf_event__fprintf_cpu_map function Jiri Olsa <jolsa@kernel.org> - 2015-10-16 13:00 +0200
  [PATCH 17/57] perf tools: Add stat round event synthesize function Jiri Olsa <jolsa@kernel.org> - 2015-10-16 13:00 +0200
  [PATCH 07/57] perf tools: Add cpu_map__empty_new function Jiri Olsa <jolsa@kernel.org> - 2015-10-16 13:00 +0200
  [PATCH 26/57] perf tools: Introduce stat feature Jiri Olsa <jolsa@kernel.org> - 2015-10-16 13:00 +0200
  [PATCH 36/57] perf stat record: Write stat round events on record Jiri Olsa <jolsa@kernel.org> - 2015-10-16 13:00 +0200
  [PATCH 10/57] perf tools: Add stat config event Jiri Olsa <jolsa@kernel.org> - 2015-10-16 13:00 +0200
  [PATCH 04/57] perf tools: Add perf_event__fprintf_thread_map function Jiri Olsa <jolsa@kernel.org> - 2015-10-16 13:00 +0200
  [PATCH 20/57] perf tools: Add attr_update event unit type Jiri Olsa <jolsa@kernel.org> - 2015-10-16 13:00 +0200
  [PATCH 05/57] perf tools: Add cpu_map event Jiri Olsa <jolsa@kernel.org> - 2015-10-16 13:00 +0200
  [PATCH 13/57] perf tools: Add stat event Jiri Olsa <jolsa@kernel.org> - 2015-10-16 13:00 +0200
  [PATCH 24/57] perf tools: Add perf_event__fprintf_attr_update function Jiri Olsa <jolsa@kernel.org> - 2015-10-16 13:00 +0200
  [PATCH 29/57] perf stat: Add AGGR_UNSET mode Jiri Olsa <jolsa@kernel.org> - 2015-10-16 13:00 +0200
  [PATCH 34/57] perf stat record: Add pipe support for record command Jiri Olsa <jolsa@kernel.org> - 2015-10-16 13:00 +0200
  [PATCH 31/57] perf stat record: Initialize record features Jiri Olsa <jolsa@kernel.org> - 2015-10-16 13:00 +0200
  [PATCH 02/57] perf tools: Add thread_map event sythesize function Jiri Olsa <jolsa@kernel.org> - 2015-10-16 13:10 +0200

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