[PATCH v2 5/7] tools/vm/page_owner: increase temporary buffer size

From: js1304@gmail.com
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Vlastimil Babka <vbabka@suse.cz>,
	mgorman@techsingularity.net, Minchan Kim <minchan@kernel.org>,
	Alexander Potapenko <glider@google.com>,
	Hugh Dickins <hughd@google.com>, Michal Hocko <mhocko@kernel.org>,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org,
	Joonsoo Kim <iamjoonsoo.kim@lge.com>
Subject: [PATCH v2 5/7] tools/vm/page_owner: increase temporary buffer size
Date: Thu, 26 May 2016 11:37:53 +0900	[thread overview]
Message-ID: <1464230275-25791-5-git-send-email-iamjoonsoo.kim@lge.com> (raw)
In-Reply-To: <1464230275-25791-1-git-send-email-iamjoonsoo.kim@lge.com>

From: Joonsoo Kim <iamjoonsoo.kim@lge.com>

Page owner will be changed to store more deep stacktrace
so current temporary buffer size isn't enough. Increase it.

Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
---
 tools/vm/page_owner_sort.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/tools/vm/page_owner_sort.c b/tools/vm/page_owner_sort.c
index 77147b4..f1c055f 100644
--- a/tools/vm/page_owner_sort.c
+++ b/tools/vm/page_owner_sort.c
@@ -79,12 +79,12 @@ static void add_list(char *buf, int len)
 	}
 }
 
-#define BUF_SIZE	1024
+#define BUF_SIZE	(128 * 1024)
 
 int main(int argc, char **argv)
 {
 	FILE *fin, *fout;
-	char buf[BUF_SIZE];
+	char *buf;
 	int ret, i, count;
 	struct block_list *list2;
 	struct stat st;
@@ -107,6 +107,11 @@ int main(int argc, char **argv)
 	max_size = st.st_size / 100; /* hack ... */
 
 	list = malloc(max_size * sizeof(*list));
+	buf = malloc(BUF_SIZE);
+	if (!list || !buf) {
+		printf("Out of memory\n");
+		exit(1);
+	}
 
 	for ( ; ; ) {
 		ret = read_block(buf, BUF_SIZE, fin);
-- 
1.9.1
