linux-kernel - [PATCH 2/2] tools/vm/page_owner

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Date:   Tue, 14 Dec 2021 00:45:18 +0800
From:   Shenghong Han <hanshenghong2019@...il.szu.edu.cn>
To:     akpm@...ux-foundation.org
Cc:     broonie@...nel.org, seanga2@...il.com, weizhenliang@...wei.com,
        tangbin@...s.chinamobile.com, zhangshengju@...s.chinamobile.com,
        zhaochongxi2019@...il.szu.edu.cn, zhangyinan2019@...il.szu.edu.cn,
        linux-kernel@...r.kernel.org, caoyixuan2019@...il.szu.edu.cn,
        hanshenghong2019@...il.szu.edu.cn
Subject: [PATCH 2/2] tools/vm/page_owner_sort.c: two trivial fixes

1) There is an unused variable. It's better to delete it.
2) One case is missing in the usage().

Signed-off-by: Shenghong Han <hanshenghong2019@...il.szu.edu.cn>
---
 tools/vm/page_owner_sort.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/tools/vm/page_owner_sort.c b/tools/vm/page_owner_sort.c
index c16774f09eeb..a2c6797e09f8 100644
--- a/tools/vm/page_owner_sort.c
+++ b/tools/vm/page_owner_sort.c
@@ -41,8 +41,6 @@ static struct block_list *list;
 static int list_size;
 static int max_size;
 
-struct block_list *block_head;
-
 int read_block(char *buf, int buf_size, FILE *fin)
 {
 	char *curr = buf, *const buf_end = buf + buf_size;
@@ -249,7 +247,8 @@ static void usage(void)
 		"-p	Sort by pid.\n"
 		"-a	Sort by memory allocate time.\n"
 		"-r	Sort by memory release time.\n"
-		"-c	cull by comparing stacktrace instead of total block.\n"
+		"-c	Cull by comparing stacktrace instead of total block.\n"
+		"-f	Filter out the information of blocks whose memory has not been released.\n"
 	);
 }
 
-- 
2.30.1