linux-kernel - [tip:perf/core] perf mmap: Use stored 'overwrite' in perf_mmap_

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Date:   Fri, 9 Mar 2018 00:45:33 -0800
From:   tip-bot for Kan Liang <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     mingo@...nel.org, linux-kernel@...r.kernel.org, tglx@...utronix.de,
        kan.liang@...ux.intel.com, ak@...ux.intel.com, acme@...hat.com,
        namhyung@...nel.org, hpa@...or.com, wangnan0@...wei.com,
        jolsa@...nel.org
Subject: [tip:perf/core] perf mmap: Use stored 'overwrite' in
 perf_mmap__consume()

Commit-ID:  bdec8b2f7eed4f16b764ca258487d26f8079f5ff
Gitweb:     https://git.kernel.org/tip/bdec8b2f7eed4f16b764ca258487d26f8079f5ff
Author:     Kan Liang <kan.liang@...ux.intel.com>
AuthorDate: Tue, 6 Mar 2018 10:36:04 -0500
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Thu, 8 Mar 2018 10:05:52 -0300

perf mmap: Use stored 'overwrite' in perf_mmap__consume()

The 'overwrite' is set at allocation. It will not be changed.  Using it
to replace the parameter of perf_mmap__consume().  The parameters will
be discarded later.

No functional change.

Signed-off-by: Kan Liang <kan.liang@...ux.intel.com>
Suggested-by: Arnaldo Carvalho de Melo <acme@...hat.com>
Acked-by: Jiri Olsa <jolsa@...nel.org>
Cc: Andi Kleen <ak@...ux.intel.com>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Wang Nan <wangnan0@...wei.com>
Link: http://lkml.kernel.org/r/1520350567-80082-5-git-send-email-kan.liang@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/util/mmap.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/perf/util/mmap.c b/tools/perf/util/mmap.c
index 2933942abfe2..8a2dac90056c 100644
--- a/tools/perf/util/mmap.c
+++ b/tools/perf/util/mmap.c
@@ -118,9 +118,9 @@ void perf_mmap__put(struct perf_mmap *map)
 		perf_mmap__munmap(map);
 }
 
-void perf_mmap__consume(struct perf_mmap *map, bool overwrite)
+void perf_mmap__consume(struct perf_mmap *map, bool overwrite __maybe_unused)
 {
-	if (!overwrite) {
+	if (!map->overwrite) {
 		u64 old = map->prev;
 
 		perf_mmap__write_tail(map, old);