linux-kernel - [tip:perfcounters/tracing] perf tools: Record events info also when :record suffix is used.

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Date:	Mon, 17 Aug 2009 22:06:42 GMT
From:	tip-bot for Frederic Weisbecker <fweisbec@...il.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, acme@...hat.com, hpa@...or.com,
	mingo@...hat.com, efault@....de, peterz@...radead.org,
	fweisbec@...il.com, rostedt@...dmis.org, tglx@...utronix.de,
	mingo@...e.hu
Subject: [tip:perfcounters/tracing] perf tools: Record events info also when :record suffix is used.

Commit-ID:  9df37ddd81f54dd41dc4958055c3a3c9b6840aef
Gitweb:     http://git.kernel.org/tip/9df37ddd81f54dd41dc4958055c3a3c9b6840aef
Author:     Frederic Weisbecker <fweisbec@...il.com>
AuthorDate: Mon, 17 Aug 2009 23:07:50 +0200
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Tue, 18 Aug 2009 00:00:19 +0200

perf tools: Record events info also when :record suffix is used.

You can enable a counter's PERF_SAMPLE_RAW attribute in two
fashions:

- using the -R option (every counters get PERF_SAMPLE_RAW)
- using the :record suffix in a trace event counter name

Currently we record the events info in a trace.info file from
perf record when the former method is used but we omit it with
the latter.

Check both situations.

Signed-off-by: Frederic Weisbecker <fweisbec@...il.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Arnaldo Carvalho de Melo <acme@...hat.com>
Cc: Mike Galbraith <efault@....de>
Cc: Steven Rostedt <rostedt@...dmis.org>
LKML-Reference: <1250543271-8383-3-git-send-email-fweisbec@...il.com>
Signed-off-by: Ingo Molnar <mingo@...e.hu>


---
 tools/perf/builtin-record.c |   14 +++++++++++---
 1 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 3ce2f03..acbe594 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -520,9 +520,6 @@ static int __cmd_record(int argc, const char **argv)
 	signal(SIGCHLD, sig_handler);
 	signal(SIGINT, sig_handler);
 
-	if (raw_samples)
-		read_tracing_data();
-
 	if (!stat(output_name, &st) && st.st_size) {
 		if (!force && !append_file) {
 			fprintf(stderr, "Error, output file %s exists, use -A to append or -f to overwrite.\n",
@@ -550,6 +547,17 @@ static int __cmd_record(int argc, const char **argv)
 	else
 		header = perf_header__new();
 
+
+	if (raw_samples) {
+		read_tracing_data();
+	} else {
+		for (i = 0; i < nr_counters; i++) {
+			if (attrs[i].sample_type & PERF_SAMPLE_RAW) {
+				read_tracing_data();
+				break;
+			}
+		}
+	}
 	atexit(atexit_header);
 
 	if (!system_wide) {
--
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