diff options
| author | Alexey Dobriyan <adobriyan@gmail.com> | 2019-03-05 15:48:26 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-03-05 21:07:19 -0800 |
| commit | b9726c26dc21b15a2faea96fae3a42f2f7fffdcb (patch) | |
| tree | 28c39800b37b56f9cb026a8dfc79e35c6208e2b4 /include/linux/nodemask.h | |
| parent | d342a0b38674867ea67fde47b0e1e60ffe9f17a2 (diff) | |
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 <adobriyan@gmail.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/nodemask.h')
| -rw-r--r-- | include/linux/nodemask.h | 4 |
1 files changed, 2 insertions, 2 deletions
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) |