From 6c0345b73b970078c3e71ecc614a007207a1428a Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Fri, 21 Nov 2014 10:31:15 +0100 Subject: [PATCH] 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 Cc: Andi Kleen Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Matt Fleming Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1416562275-12404-12-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- 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 860e8ad06616..891086376381 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++)