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Commit 6c0345b7 authored by Jiri Olsa's avatar Jiri Olsa Committed by Arnaldo Carvalho de Melo
Browse files

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: default avatarJiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Matt Fleming <matt.fleming@intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1416562275-12404-12-git-send-email-jolsa@kernel.org


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 779d0b99

tools/perf/builtin-stat.c

+4 −2
Original line number Diff line number Diff line
@@ -443,6 +443,7 @@ static int read_cb(struct perf_evsel *evsel, int cpu, int thread __maybe_unused, 
	case AGGR_CORE:

	case AGGR_SOCKET:

	case AGGR_NONE:

		if (!evsel->snapshot)

			perf_evsel__compute_deltas(evsel, cpu, count);

		perf_counts_values__scale(count, scale, NULL);

		evsel->counts->cpu[cpu] = *count;
@@ -479,6 +480,7 @@ static int read_counter_aggr(struct perf_evsel *counter) 
	if (read_counter(counter))

		return -1;



	if (!counter->snapshot)

		perf_evsel__compute_deltas(counter, -1, aggr);

	perf_counts_values__scale(aggr, scale, &counter->counts->scaled);