From b9726c26dc21b15a2faea96fae3a42f2f7fffdcb Mon Sep 17 00:00:00 2001 From: Alexey Dobriyan Date: Tue, 5 Mar 2019 15:48:26 -0800 Subject: numa: make "nr_node_ids" unsigned int Number of NUMA nodes can't be negative. This saves a few bytes on x86_64: add/remove: 0/0 grow/shrink: 4/21 up/down: 27/-265 (-238) Function old new delta hv_synic_alloc.cold 88 110 +22 prealloc_shrinker 260 262 +2 bootstrap 249 251 +2 sched_init_numa 1566 1567 +1 show_slab_objects 778 777 -1 s_show 1201 1200 -1 kmem_cache_init 346 345 -1 __alloc_workqueue_key 1146 1145 -1 mem_cgroup_css_alloc 1614 1612 -2 __do_sys_swapon 4702 4699 -3 __list_lru_init 655 651 -4 nic_probe 2379 2374 -5 store_user_store 118 111 -7 red_zone_store 106 99 -7 poison_store 106 99 -7 wq_numa_init 348 338 -10 __kmem_cache_empty 75 65 -10 task_numa_free 186 173 -13 merge_across_nodes_store 351 336 -15 irq_create_affinity_masks 1261 1246 -15 do_numa_crng_init 343 321 -22 task_numa_fault 4760 4737 -23 swapfile_init 179 156 -23 hv_synic_alloc 536 492 -44 apply_wqattrs_prepare 746 695 -51 Link: http://lkml.kernel.org/r/20190201223029.GA15820@avx2 Signed-off-by: Alexey Dobriyan Reviewed-by: Andrew Morton Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/list_lru.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'mm/list_lru.c') diff --git a/mm/list_lru.c b/mm/list_lru.c index 5b30625fd365..0730bf8ff39f 100644 --- a/mm/list_lru.c +++ b/mm/list_lru.c @@ -601,7 +601,6 @@ int __list_lru_init(struct list_lru *lru, bool memcg_aware, struct lock_class_key *key, struct shrinker *shrinker) { int i; - size_t size = sizeof(*lru->node) * nr_node_ids; int err = -ENOMEM; #ifdef CONFIG_MEMCG_KMEM @@ -612,7 +611,7 @@ int __list_lru_init(struct list_lru *lru, bool memcg_aware, #endif memcg_get_cache_ids(); - lru->node = kzalloc(size, GFP_KERNEL); + lru->node = kcalloc(nr_node_ids, sizeof(*lru->node), GFP_KERNEL); if (!lru->node) goto out; -- cgit v1.2.3-58-ga151