Commit-ID: 6c0345b73b970078c3e71ecc614a007207a1428a Gitweb: http://git.kernel.org/tip/6c0345b73b970078c3e71ecc614a007207a1428a Author: Jiri Olsa <jolsa@xxxxxxxxxx> AuthorDate: Fri, 21 Nov 2014 10:31:15 +0100 Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> CommitDate: Mon, 1 Dec 2014 20:00:31 -0300 perf stat: Add support for snapshot counters The .snapshot file indicates that the provided event value is a snapshot value. Bypassing the delta computation logic for such event. Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx> Cc: Andi Kleen <ak@xxxxxxxxxxxxxxx> Cc: Corey Ashford <cjashfor@xxxxxxxxxxxxxxxxxx> Cc: David Ahern <dsahern@xxxxxxxxx> Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx> Cc: Ingo Molnar <mingo@xxxxxxxxxx> Cc: Matt Fleming <matt.fleming@xxxxxxxxx> Cc: Namhyung Kim <namhyung@xxxxxxxxxx> Cc: Paul Mackerras <paulus@xxxxxxxxx> Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx> Cc: Stephane Eranian <eranian@xxxxxxxxxx> Link: http://lkml.kernel.org/r/1416562275-12404-12-git-send-email-jolsa@xxxxxxxxxx Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> --- tools/perf/builtin-stat.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c index 860e8ad..8910863 100644 --- a/tools/perf/builtin-stat.c +++ b/tools/perf/builtin-stat.c @@ -443,7 +443,8 @@ static int read_cb(struct perf_evsel *evsel, int cpu, int thread __maybe_unused, case AGGR_CORE: case AGGR_SOCKET: case AGGR_NONE: - perf_evsel__compute_deltas(evsel, cpu, count); + if (!evsel->snapshot) + perf_evsel__compute_deltas(evsel, cpu, count); perf_counts_values__scale(count, scale, NULL); evsel->counts->cpu[cpu] = *count; update_shadow_stats(evsel, count->values); @@ -479,7 +480,8 @@ static int read_counter_aggr(struct perf_evsel *counter) if (read_counter(counter)) return -1; - perf_evsel__compute_deltas(counter, -1, aggr); + if (!counter->snapshot) + perf_evsel__compute_deltas(counter, -1, aggr); perf_counts_values__scale(aggr, scale, &counter->counts->scaled); for (i = 0; i < 3; i++) -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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