diff mbox series

[v2,07/11] mm/migration: avoid unneeded nodemask_t initialization

Message ID 20220318111709.60311-8-linmiaohe@huawei.com (mailing list archive)
State New
Headers show
Series A few cleanup and fixup patches for migration | expand

Commit Message

Miaohe Lin March 18, 2022, 11:17 a.m. UTC 
Avoid unneeded next_pass and this_pass initialization as they're always
set before using to save possible cpu cycles when there are plenty of
nodes in the system.

Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: Muchun Song <songmuchun@bytedance.com>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
---
 mm/migrate.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/mm/migrate.c b/mm/migrate.c
index 92068d090db8..bb36f6b40f18 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -2379,8 +2379,8 @@  static int establish_migrate_target(int node, nodemask_t *used,
  */
 static void __set_migration_target_nodes(void)
 {
-	nodemask_t next_pass	= NODE_MASK_NONE;
-	nodemask_t this_pass	= NODE_MASK_NONE;
+	nodemask_t next_pass;
+	nodemask_t this_pass;
 	nodemask_t used_targets = NODE_MASK_NONE;
 	int node, best_distance;