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| author | Miaohe Lin <linmiaohe@huawei.com> | 2022-04-29 08:16:08 +0200 |
|---|---|---|
| committer | akpm <akpm@linux-foundation.org> | 2022-04-29 08:16:08 +0200 |
| commit | 91925ab8cc2a05ab0e524830247e1d66ba4e4e19 (patch) | |
| tree | 2ada8dd11edef283f3821fbb00b08c5ab6dec699 /mm/migrate.c | |
| parent | mm/migration: use helper macro min in do_pages_stat (diff) | |
| download | linux-91925ab8cc2a05ab0e524830247e1d66ba4e4e19.tar.xz linux-91925ab8cc2a05ab0e524830247e1d66ba4e4e19.zip | |
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>
Diffstat (limited to 'mm/migrate.c')
| -rw-r--r-- | mm/migrate.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/migrate.c b/mm/migrate.c index 02448b618c6b..d9f378b623ea 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -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; |