Messages in this thread Patch in this message | | | From | Jiri Olsa <> | Subject | [PATCH 24/45] perf stat record: Write stat events on record | Date | Wed, 30 Sep 2015 16:10:37 +0200 |
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Writing stat events on 'perf stat record' at the time we read counter values from kernel.
Link: http://lkml.kernel.org/n/tip-ojc826gy0x9jj74elbjfccej@git.kernel.org Signed-off-by: Jiri Olsa <jolsa@kernel.org> --- tools/perf/builtin-stat.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+)
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c index 74aac55ff24a..898d4042310c 100644 --- a/tools/perf/builtin-stat.c +++ b/tools/perf/builtin-stat.c @@ -205,6 +205,18 @@ static int process_synthesized_event(struct perf_tool *tool __maybe_unused, return 0; } +#define SID(e, x, y) xyarray__entry(e->sample_id, x, y) + +static int +perf_evsel__write_stat_event(struct perf_evsel *counter, u32 cpu, u32 thread, + struct perf_counts_values *count) +{ + struct perf_sample_id *sid = SID(counter, cpu, thread); + + return perf_event__synthesize_stat(NULL, cpu, thread, sid->id, count, + process_synthesized_event, NULL); +} + /* * Read out the results of a single counter: * do not aggregate counts across CPUs in system-wide mode @@ -228,6 +240,13 @@ static int read_counter(struct perf_evsel *counter) count = perf_counts(counter->counts, cpu, thread); if (perf_evsel__read(counter, cpu, thread, count)) return -1; + + if (STAT_RECORD) { + if (perf_evsel__write_stat_event(counter, cpu, thread, count)) { + pr_err("failed to write stat event\n"); + return -1; + } + } } } -- 2.4.3
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