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[PATCH 24/56] perf tools: Introduce stat feature

From Jiri Olsa <jolsa@kernel.org>
Newsgroups linux.kernel
Subject [PATCH 24/56] perf tools: Introduce stat feature
Date 2015-10-06 22:10 +0200
Message-ID <qgGIG-84P-15@gated-at.bofh.it> (permalink)
References <qgGz0-7BP-7@gated-at.bofh.it>
Organization linux.* mail to news gateway

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Introducing stat feature to mark perf.data as created by
perf stat record command. It contains no data.

It's needed for report tools (report/script) to differentiate
sampling data from stat data, because they need to be treated
in a different way.

In future it might be used to store version of the stat
storage system we used.

Link: http://lkml.kernel.org/n/tip-56xpt7m6au4d8u39nffoqgx1@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
 tools/perf/builtin-record.c |  2 ++
 tools/perf/util/header.c    | 14 ++++++++++++++
 tools/perf/util/header.h    |  1 +
 3 files changed, 17 insertions(+)

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 24ace2f318c1..99b690b51bff 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -451,6 +451,8 @@ static void record__init_features(struct record *rec)
 
 	if (!rec->opts.full_auxtrace)
 		perf_header__clear_feat(&session->header, HEADER_AUXTRACE);
+
+	perf_header__clear_feat(&session->header, HEADER_STAT);
 }
 
 static volatile int workload_exec_errno;
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index f35e8355cb1f..09baecf79036 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -868,6 +868,13 @@ static int write_auxtrace(int fd, struct perf_header *h,
 	return err;
 }
 
+static int write_stat(int fd __maybe_unused,
+		      struct perf_header *h __maybe_unused,
+		      struct perf_evlist *evlist __maybe_unused)
+{
+	return 0;
+}
+
 static void print_hostname(struct perf_header *ph, int fd __maybe_unused,
 			   FILE *fp)
 {
@@ -1159,6 +1166,12 @@ static void print_auxtrace(struct perf_header *ph __maybe_unused,
 	fprintf(fp, "# contains AUX area data (e.g. instruction trace)\n");
 }
 
+static void print_stat(struct perf_header *ph __maybe_unused,
+		       int fd __maybe_unused, FILE *fp)
+{
+	fprintf(fp, "# contains stat data\n");
+}
+
 static void print_pmu_mappings(struct perf_header *ph, int fd __maybe_unused,
 			       FILE *fp)
 {
@@ -1948,6 +1961,7 @@ static const struct feature_ops feat_ops[HEADER_LAST_FEATURE] = {
 	FEAT_OPP(HEADER_PMU_MAPPINGS,	pmu_mappings),
 	FEAT_OPP(HEADER_GROUP_DESC,	group_desc),
 	FEAT_OPP(HEADER_AUXTRACE,	auxtrace),
+	FEAT_OPA(HEADER_STAT,		stat),
 };
 
 struct header_print_data {
diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h
index d39fd61db4c0..51b8f6c2ee6f 100644
--- a/tools/perf/util/header.h
+++ b/tools/perf/util/header.h
@@ -31,6 +31,7 @@ enum {
 	HEADER_PMU_MAPPINGS,
 	HEADER_GROUP_DESC,
 	HEADER_AUXTRACE,
+	HEADER_STAT,
 	HEADER_LAST_FEATURE,
 	HEADER_FEAT_BITS	= 256,
 };
-- 
2.4.3

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Thread

[PATCHv3 00/56] perf stat: Add scripting support Jiri Olsa <jolsa@kernel.org> - 2015-10-06 22:00 +0200
  [PATCH 36/56] perf stat record: Synthesize attr update events Jiri Olsa <jolsa@kernel.org> - 2015-10-06 22:00 +0200
  [PATCH 08/56] perf tools: Add perf_event__fprintf_cpu_map function Jiri Olsa <jolsa@kernel.org> - 2015-10-06 22:00 +0200
  [PATCH 25/56] perf tools: Move id_offset out of struct perf_evsel union Jiri Olsa <jolsa@kernel.org> - 2015-10-06 22:00 +0200
  [PATCH 28/56] perf stat record: Add record command Jiri Olsa <jolsa@kernel.org> - 2015-10-06 22:00 +0200
  [PATCH 45/56] perf stat report: Process stat and stat round events Jiri Olsa <jolsa@kernel.org> - 2015-10-06 22:00 +0200
  [PATCH 43/56] perf stat report: Process stat config event Jiri Olsa <jolsa@kernel.org> - 2015-10-06 22:00 +0200
  [PATCH 39/56] perf tools: Add data arg to cpu_map__build_map callback Jiri Olsa <jolsa@kernel.org> - 2015-10-06 22:00 +0200
  [PATCH 13/56] perf tools: Add stat event synthesize function Jiri Olsa <jolsa@kernel.org> - 2015-10-06 22:00 +0200
  [PATCH 32/56] perf stat record: Add pipe support for record command Jiri Olsa <jolsa@kernel.org> - 2015-10-06 22:10 +0200
  [PATCH 29/56] perf stat record: Initialize record features Jiri Olsa <jolsa@kernel.org> - 2015-10-06 22:10 +0200
  [PATCH 19/56] perf tools: Add attr_update event unit type Jiri Olsa <jolsa@kernel.org> - 2015-10-06 22:10 +0200
  [PATCH 37/56] perf tools: Add cpu_map__empty_new interface Jiri Olsa <jolsa@kernel.org> - 2015-10-06 22:10 +0200
  [PATCH 50/56] perf script: Process cpu/threads maps Jiri Olsa <jolsa@kernel.org> - 2015-10-06 22:10 +0200
  [PATCH 26/56] perf stat: Rename perf_stat struct into perf_stat_evsel Jiri Olsa <jolsa@kernel.org> - 2015-10-06 22:10 +0200
  [PATCH 24/56] perf tools: Introduce stat feature Jiri Olsa <jolsa@kernel.org> - 2015-10-06 22:10 +0200
  [PATCH 52/56] perf script: Add process_stat/process_stat_interval scripting interface Jiri Olsa <jolsa@kernel.org> - 2015-10-06 22:10 +0200
  [PATCH 16/56] perf tools: Add stat round event synthesize function Jiri Olsa <jolsa@kernel.org> - 2015-10-06 22:10 +0200
  [PATCH 35/56] perf stat record: Do not allow record with multiple runs mode Jiri Olsa <jolsa@kernel.org> - 2015-10-06 22:10 +0200
  [PATCH 22/56] perf tools: Add perf_event__fprintf_attr_update function Jiri Olsa <jolsa@kernel.org> - 2015-10-06 22:10 +0200
  [PATCH 40/56] perf stat report: Cache aggregated map entries in extra cpumap Jiri Olsa <jolsa@kernel.org> - 2015-10-06 22:10 +0200
  [PATCH 42/56] perf stat report: Process cpu/threads maps Jiri Olsa <jolsa@kernel.org> - 2015-10-06 22:10 +0200
  [PATCH 34/56] perf stat record: Write stat round events on record Jiri Olsa <jolsa@kernel.org> - 2015-10-06 22:10 +0200
  [PATCH 21/56] perf tools: Add attr_update event name type Jiri Olsa <jolsa@kernel.org> - 2015-10-06 22:10 +0200
  [PATCH 20/56] perf tools: Add attr_update event scale type Jiri Olsa <jolsa@kernel.org> - 2015-10-06 22:10 +0200
  [PATCH 18/56] perf tools: Add attr_update event Jiri Olsa <jolsa@kernel.org> - 2015-10-06 22:10 +0200
  [PATCH 10/56] perf tools: Add stat config event synthesize function Jiri Olsa <jolsa@kernel.org> - 2015-10-06 22:20 +0200
  [PATCH 04/56] perf tools: Add perf_event__fprintf_thread_map function Jiri Olsa <jolsa@kernel.org> - 2015-10-06 22:20 +0200
  [PATCH 06/56] perf tools: Add cpu_map event synthesize function Jiri Olsa <jolsa@kernel.org> - 2015-10-06 22:20 +0200
  [PATCH 14/56] perf tools: Add stat event read function Jiri Olsa <jolsa@kernel.org> - 2015-10-06 22:20 +0200
  [PATCH 12/56] perf tools: Add stat event Jiri Olsa <jolsa@kernel.org> - 2015-10-06 22:20 +0200
  [PATCH 11/56] perf tools: Add stat config event read function Jiri Olsa <jolsa@kernel.org> - 2015-10-06 22:20 +0200
  RE: [PATCHv3 00/56] perf stat: Add scripting support "Liang, Kan" <kan.liang@intel.com> - 2015-10-08 20:40 +0200
    Re: [PATCHv3 00/56] perf stat: Add scripting support Jiri Olsa <jolsa@redhat.com> - 2015-10-08 22:20 +0200
      RE: [PATCHv3 00/56] perf stat: Add scripting support "Liang, Kan" <kan.liang@intel.com> - 2015-10-09 20:40 +0200
        Re: [PATCHv3 00/56] perf stat: Add scripting support Jiri Olsa <jolsa@redhat.com> - 2015-10-14 13:00 +0200
          RE: [PATCHv3 00/56] perf stat: Add scripting support "Liang, Kan" <kan.liang@intel.com> - 2015-10-14 21:50 +0200

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