linux-kernel - [PATCH 39/48] perf record: Move waking into struct record

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Date:   Thu, 13 Sep 2018 14:54:41 +0200
From:   Jiri Olsa <jolsa@...nel.org>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     lkml <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Andi Kleen <andi@...stfloor.org>,
        Alexey Budankov <alexey.budankov@...ux.intel.com>
Subject: [PATCH 39/48] perf record: Move waking into struct record

We need to keep global number of 'waking' now.

TODO: make this multiple threads safe.

Link: http://lkml.kernel.org/n/tip-veetgk62aisdt1cxaa6fbgox@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@...nel.org>
---
 tools/perf/builtin-record.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index d6fef646b67f..62ff4411ce39 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -94,6 +94,7 @@ struct record {
 	unsigned long long	samples;
 	struct record_thread	*threads;
 	int			threads_cnt;
+	unsigned long		waking;
 };
 
 static __thread struct record_thread *thread;
@@ -1143,7 +1144,6 @@ static int __cmd_record(struct record *rec, int argc, const char **argv)
 {
 	int err;
 	int status = 0;
-	unsigned long waking = 0;
 	const bool forks = argc > 0;
 	struct perf_tool *tool = &rec->tool;
 	struct record_opts *opts = &rec->opts;
@@ -1400,8 +1400,8 @@ static int __cmd_record(struct record *rec, int argc, const char **argv)
 
 			if (!quiet)
 				fprintf(stderr, "[ perf record: dump data: Woken up %ld times ]\n",
-					waking);
-			waking = 0;
+					rec->waking);
+			rec->waking = 0;
 			fd = record__switch_output(rec, false);
 			if (fd < 0) {
 				pr_err("Failed to switch to new file\n");
@@ -1425,7 +1425,7 @@ static int __cmd_record(struct record *rec, int argc, const char **argv)
 			 */
 			if (err > 0 || (err < 0 && errno == EINTR))
 				err = 0;
-			waking++;
+			rec->waking++;
 
 			if (perf_evlist__filter_pollfd(rec->evlist, POLLERR | POLLHUP) == 0)
 				draining = true;
@@ -1454,7 +1454,7 @@ static int __cmd_record(struct record *rec, int argc, const char **argv)
 	}
 
 	if (!quiet)
-		fprintf(stderr, "[ perf record: Woken up %ld times to write data ]\n", waking);
+		fprintf(stderr, "[ perf record: Woken up %ld times to write data ]\n", rec->waking);
 
 	if (target__none(&rec->opts.target))
 		record__synthesize_workload(rec, true);
-- 
2.17.1