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Groups > linux.kernel > #1286040

[PATCH 08/14] perf evsel: Use event maps directly in perf_evsel__enable

From Arnaldo Carvalho de Melo <acme@kernel.org>
Newsgroups linux.kernel
Subject [PATCH 08/14] perf evsel: Use event maps directly in perf_evsel__enable
Date 2015-12-07 23:30 +0100
Message-ID <qDcsb-2fH-47@gated-at.bofh.it> (permalink)
References <qDcit-2cp-3@gated-at.bofh.it>
Organization linux.* mail to news gateway

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From: Jiri Olsa <jolsa@kernel.org>

All events now share proper cpu and thread maps. There's no need to pass
those maps from evlist, it's safe to use evsel maps for enabling event.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.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/1449133606-14429-2-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/builtin-stat.c | 5 +----
 tools/perf/util/evsel.c   | 5 ++++-
 tools/perf/util/evsel.h   | 2 +-
 3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index df2fbf046ee2..813c52ad9303 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -256,12 +256,9 @@ static void handle_initial_delay(void)
 	struct perf_evsel *counter;
 
 	if (initial_delay) {
-		const int ncpus = cpu_map__nr(evsel_list->cpus),
-			nthreads = thread_map__nr(evsel_list->threads);
-
 		usleep(initial_delay * 1000);
 		evlist__for_each(evsel_list, counter)
-			perf_evsel__enable(counter, ncpus, nthreads);
+			perf_evsel__enable(counter);
 	}
 }
 
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 0a1f4d9e52fc..3a9b5068667d 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -981,8 +981,11 @@ int perf_evsel__append_filter(struct perf_evsel *evsel,
 	return -1;
 }
 
-int perf_evsel__enable(struct perf_evsel *evsel, int ncpus, int nthreads)
+int perf_evsel__enable(struct perf_evsel *evsel)
 {
+	int nthreads = thread_map__nr(evsel->threads);
+	int ncpus = cpu_map__nr(evsel->cpus);
+
 	return perf_evsel__run_ioctl(evsel, ncpus, nthreads,
 				     PERF_EVENT_IOC_ENABLE,
 				     0);
diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
index 0e49bd742c63..a721592a3200 100644
--- a/tools/perf/util/evsel.h
+++ b/tools/perf/util/evsel.h
@@ -227,7 +227,7 @@ int perf_evsel__append_filter(struct perf_evsel *evsel,
 			      const char *op, const char *filter);
 int perf_evsel__apply_filter(struct perf_evsel *evsel, int ncpus, int nthreads,
 			     const char *filter);
-int perf_evsel__enable(struct perf_evsel *evsel, int ncpus, int nthreads);
+int perf_evsel__enable(struct perf_evsel *evsel);
 
 int perf_evsel__open_per_cpu(struct perf_evsel *evsel,
 			     struct cpu_map *cpus);
-- 
2.1.0

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Thread

[GIT PULL 00/14] perf/core improvements and fixes Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-12-07 23:30 +0100
  [PATCH 11/14] perf stat: Use perf_evlist__enable in handle_initial_delay Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-12-07 23:30 +0100
  [PATCH 10/14] perf evlist: Factor perf_evlist__(enable|disable) functions Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-12-07 23:30 +0100
  [PATCH 08/14] perf evsel: Use event maps directly in perf_evsel__enable Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-12-07 23:30 +0100
  Re: [GIT PULL 00/14] perf/core improvements and fixes Ingo Molnar <mingo@kernel.org> - 2015-12-08 05:30 +0100

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