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 --- include/linux/nodemask.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/nodemask.h b/include/linux/nodemask.h index 5a30ad594ccc..962c5e783d50 100644 --- a/include/linux/nodemask.h +++ b/include/linux/nodemask.h @@ -444,7 +444,7 @@ static inline int next_memory_node(int nid) return next_node(nid, node_states[N_MEMORY]); } -extern int nr_node_ids; +extern unsigned int nr_node_ids; extern int nr_online_nodes; static inline void node_set_online(int nid) @@ -485,7 +485,7 @@ static inline int num_node_state(enum node_states state) #define first_online_node 0 #define first_memory_node 0 #define next_online_node(nid) (MAX_NUMNODES) -#define nr_node_ids 1 +#define nr_node_ids 1U #define nr_online_nodes 1 #define node_set_online(node) node_set_state((node), N_ONLINE) -- cgit v1.2.3