diff options
| author | Alexey Dobriyan <adobriyan@gmail.com> | 2019-03-06 00:48:26 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-03-06 06:07:19 +0100 |
| commit | b9726c26dc21b15a2faea96fae3a42f2f7fffdcb (patch) | |
| tree | 28c39800b37b56f9cb026a8dfc79e35c6208e2b4 /mm | |
| parent | mm,oom: don't kill global init via memory.oom.group (diff) | |
| download | linux-b9726c26dc21b15a2faea96fae3a42f2f7fffdcb.tar.xz linux-b9726c26dc21b15a2faea96fae3a42f2f7fffdcb.zip | |
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')
| -rw-r--r-- | mm/list_lru.c | 3 | ||||
| -rw-r--r-- | mm/memcontrol.c | 2 | ||||
| -rw-r--r-- | mm/page_alloc.c | 2 | ||||
| -rw-r--r-- | mm/slab.c | 3 | ||||
| -rw-r--r-- | mm/slub.c | 2 | ||||
| -rw-r--r-- | mm/swapfile.c | 2 | ||||
| -rw-r--r-- | mm/vmscan.c | 2 |
7 files changed, 7 insertions, 9 deletions
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; diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 30bda8d7fb5c..45cd1f84268a 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -4429,7 +4429,7 @@ static void mem_cgroup_free(struct mem_cgroup *memcg) static struct mem_cgroup *mem_cgroup_alloc(void) { struct mem_cgroup *memcg; - size_t size; + unsigned int size; int node; size = sizeof(struct mem_cgroup); diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 11a5f50efd97..8df43caf2eb7 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -289,7 +289,7 @@ EXPORT_SYMBOL(movable_zone); #endif /* CONFIG_HAVE_MEMBLOCK_NODE_MAP */ #if MAX_NUMNODES > 1 -int nr_node_ids __read_mostly = MAX_NUMNODES; +unsigned int nr_node_ids __read_mostly = MAX_NUMNODES; int nr_online_nodes __read_mostly = 1; EXPORT_SYMBOL(nr_node_ids); EXPORT_SYMBOL(nr_online_nodes); 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; diff --git a/mm/slub.c b/mm/slub.c index 017a2ce5ba23..1b08fbcb7e61 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -4262,7 +4262,7 @@ void __init kmem_cache_init(void) cpuhp_setup_state_nocalls(CPUHP_SLUB_DEAD, "slub:dead", NULL, slub_cpu_dead); - pr_info("SLUB: HWalign=%d, Order=%u-%u, MinObjects=%u, CPUs=%u, Nodes=%d\n", + pr_info("SLUB: HWalign=%d, Order=%u-%u, MinObjects=%u, CPUs=%u, Nodes=%u\n", cache_line_size(), slub_min_order, slub_max_order, slub_min_objects, nr_cpu_ids, nr_node_ids); diff --git a/mm/swapfile.c b/mm/swapfile.c index 57e9b1b31d55..a14257ac0476 100644 --- a/mm/swapfile.c +++ b/mm/swapfile.c @@ -2713,7 +2713,7 @@ static struct swap_info_struct *alloc_swap_info(void) struct swap_info_struct *p; unsigned int type; int i; - int size = sizeof(*p) + nr_node_ids * sizeof(struct plist_node); + unsigned int size = sizeof(*p) + nr_node_ids * sizeof(struct plist_node); p = kvzalloc(size, GFP_KERNEL); if (!p) diff --git a/mm/vmscan.c b/mm/vmscan.c index 209c2c78a087..e1f7ccdc0a90 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -374,7 +374,7 @@ unsigned long lruvec_lru_size(struct lruvec *lruvec, enum lru_list lru, int zone */ int prealloc_shrinker(struct shrinker *shrinker) { - size_t size = sizeof(*shrinker->nr_deferred); + unsigned int size = sizeof(*shrinker->nr_deferred); if (shrinker->flags & SHRINKER_NUMA_AWARE) size *= nr_node_ids; |