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authorJiri Olsa <jolsa@kernel.org>2015-11-05 15:40:52 +0100
committerArnaldo Carvalho de Melo <acme@redhat.com>2015-12-17 16:00:31 -0300
commit7aad0c32bb6aaa39aab596264ddc49d44c8088f3 (patch)
tree8b918a0994332a90f93e2010e7d61eb33326c539 /tools/perf
parent5a6ea81b8f9ce2736759d256ac4d63be65751199 (diff)
downloadop-kernel-dev-7aad0c32bb6aaa39aab596264ddc49d44c8088f3.zip
op-kernel-dev-7aad0c32bb6aaa39aab596264ddc49d44c8088f3.tar.gz
perf stat record: Write stat round events on record
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. Committer note: After the patch: $ perf report -D | grep PERF_RECORD | grep ROUND 0x852 [0x18]: PERF_RECORD_STAT_ROUND $ Reported-by: Kan Liang <kan.liang@intel.com> Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1446734469-11352-9-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf')
-rw-r--r--tools/perf/builtin-stat.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index 32aa2ea..fcece42 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -231,6 +231,16 @@ 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
@@ -306,6 +316,11 @@ 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);
}
@@ -1670,6 +1685,11 @@ int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused)
"older tools may produce warnings about this file\n.");
}
+ 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);
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