Messages in this thread Patch in this message | | | From | Miaohe Lin <> | Subject | [PATCH v2 07/11] mm/migration: avoid unneeded nodemask_t initialization | Date | Fri, 18 Mar 2022 19:17:05 +0800 |
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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 --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; -- 2.23.0
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