Thread (19 messages) 19 messages, 5 authors, 2016-12-22

Re: [PATCH v3 5/9] tools/vm/page_owner: increase temporary buffer size

From: Vlastimil Babka <hidden>
Date: 2016-06-17 12:56:44
Also in: lkml

On 06/17/2016 09:57 AM, js1304@gmail.com wrote:
From: Joonsoo Kim <redacted>

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

Link: http://lkml.kernel.org/r/1464230275-25791-5-git-send-email-iamjoonsoo.kim@lge.com
Signed-off-by: Joonsoo Kim <redacted>
Cc: Vlastimil Babka <redacted>
Acked-by: Vlastimil Babka <redacted>
quoted hunk ↗ jump to hunk
Cc: Mel Gorman <redacted>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Alexander Potapenko <glider@google.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Michal Hocko <mhocko@kernel.org>
---
 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);
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org.  For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
Keyboard shortcuts
hback out one level
jnext message in thread
kprevious message in thread
ldrill in
Escclose help / fold thread tree
?toggle this help