linux-kernel - [PATCH 4/7] perf mmap: Using stored 'overwrite' in perf_mmap_

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Date:   Mon,  5 Mar 2018 14:10:56 -0500
From:   kan.liang@...ux.intel.com
To:     acme@...nel.org, mingo@...hat.com, linux-kernel@...r.kernel.org
Cc:     jolsa@...hat.com, namhyung@...nel.org, wangnan0@...wei.com,
        ak@...ux.intel.com, Kan Liang <kan.liang@...ux.intel.com>
Subject: [PATCH 4/7] perf mmap: Using stored 'overwrite' in perf_mmap__consume

From: Kan Liang <kan.liang@...ux.intel.com>

The 'overwrite' is set at initialization. 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>
---
 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 da9e68b..c4e41d2 100644
--- a/tools/perf/util/mmap.c
+++ b/tools/perf/util/mmap.c
@@ -121,9 +121,9 @@ 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);
-- 
2.4.11