tools/vm/page_owner: increase temporary buffer size

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 <iamjoonsoo.kim@lge.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Alexander Potapenko <glider@google.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Michal Hocko <mhocko@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/tools/vm/page_owner_sort.c b/tools/vm/page_owner_sort.c
index 77147b4..f1c055f 100644 (file)
--- 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);