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| 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 /mm/slab.c | |
| parent | d342a0b38674867ea67fde47b0e1e60ffe9f17a2 (diff) | |
| download | linux-b9726c26dc21b15a2faea96fae3a42f2f7fffdcb.tar.bz2 | |
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 'mm/slab.c')
| -rw-r--r-- | mm/slab.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/mm/slab.c b/mm/slab.c index 757e646baa5d..7510a1b489df 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -677,12 +677,11 @@ static struct alien_cache *__alloc_alien_cache(int node, int entries, static struct alien_cache **alloc_alien_cache(int node, int limit, gfp_t gfp) { struct alien_cache **alc_ptr; - size_t memsize = sizeof(void *) * nr_node_ids; int i; if (limit > 1) limit = 12; - alc_ptr = kzalloc_node(memsize, gfp, node); + alc_ptr = kcalloc_node(nr_node_ids, sizeof(void *), gfp, node); if (!alc_ptr) return NULL; |