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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>
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1 changed files with 2 additions and 2 deletions
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@ -2345,8 +2345,8 @@ static int establish_migrate_target(int node, nodemask_t *used,
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*/
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*/
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static void __set_migration_target_nodes(void)
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static void __set_migration_target_nodes(void)
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{
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{
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nodemask_t next_pass = NODE_MASK_NONE;
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nodemask_t next_pass;
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nodemask_t this_pass = NODE_MASK_NONE;
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nodemask_t this_pass;
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nodemask_t used_targets = NODE_MASK_NONE;
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nodemask_t used_targets = NODE_MASK_NONE;
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int node, best_distance;
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int node, best_distance;
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