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mm/migration: avoid unneeded nodemask_t initialization 

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.

Link: https://lkml.kernel.org/r/20220318111709.60311-8-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: Muchun Song <songmuchun@bytedance.com>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: "Huang, Ying" <ying.huang@intel.com>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Miaohe Lin 2022-04-28 23:16:08 -07:00 committed by akpm
parent 3eefb826c5
commit 91925ab8cc
1 changed files with 2 additions and 2 deletions
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4
mm/migrate.c
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@ -2345,8 +2345,8 @@ out_clear:
*/
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;