Messages in this thread | | | Date | Mon, 7 Mar 2022 10:31:33 +0800 | Subject | Re: [PATCH 08/16] mm/migration: avoid unneeded nodemask_t initialization | From | Baolin Wang <> |
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On 3/4/2022 5:34 PM, Miaohe Lin wrote: > 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> > --- > mm/migrate.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/mm/migrate.c b/mm/migrate.c > index c84eec19072a..abb0c6715e1f 100644 > --- a/mm/migrate.c > +++ b/mm/migrate.c > @@ -2378,8 +2378,8 @@ 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;
LGTM. Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
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