linux-kernel - [PATCH 41/49] perf record: Move samples into struct record

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Date:   Tue,  9 Jan 2018 16:35:14 +0100
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>,
        David Ahern <dsahern@...il.com>,
        Andi Kleen <ak@...ux.intel.com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: [PATCH 41/49] perf record: Move samples into struct record_thread

Moving samples value into struct record_thread, because
we need to have this value per thread for checking
if there have been new data.

Link: http://lkml.kernel.org/n/tip-yhah10r7jikirxhbprxs3wlm@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@...nel.org>
---
 tools/perf/builtin-record.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 5fd0a955a52d..96f43fb5ba6f 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -71,6 +71,7 @@ struct record_thread {
 	int			  ovw_mmap_nr;
 	struct fdarray		  pollfd;
 	struct record		 *rec;
+	unsigned long long	  samples;
 };
 
 struct record {
@@ -159,7 +160,7 @@ static int record__pushfn(struct perf_mmap *map, void *to, void *bf, size_t size
 {
 	struct record *rec = to;
 
-	rec->samples++;
+	thread->samples++;
 	return record__write(rec, map, bf, size);
 }
 
@@ -243,7 +244,7 @@ static int record__auxtrace_mmap_read(struct record *rec,
 		return ret;
 
 	if (ret)
-		rec->samples++;
+		thread->samples++;
 
 	return 0;
 }
@@ -260,7 +261,7 @@ static int record__auxtrace_mmap_read_snapshot(struct record *rec,
 		return ret;
 
 	if (ret)
-		rec->samples++;
+		thread->samples++;
 
 	return 0;
 }
@@ -1314,7 +1315,7 @@ static int __cmd_record(struct record *rec, int argc, const char **argv)
 	trigger_ready(&switch_output_trigger);
 	perf_hooks__invoke_record_start();
 	for (;;) {
-		unsigned long long hits = rec->samples;
+		unsigned long long hits = thread->samples;
 
 		/*
 		 * rec->evlist->bkw_mmap_state is possible to be
@@ -1383,7 +1384,7 @@ static int __cmd_record(struct record *rec, int argc, const char **argv)
 				alarm(rec->switch_output.time);
 		}
 
-		if (hits == rec->samples) {
+		if (hits == thread->samples) {
 			if (done || draining)
 				break;
 			err = fdarray__poll(&thread->pollfd, -1);
-- 
2.13.6