diff options
| author | Christoph Lameter <cl@linux.com> | 2012-11-28 16:23:07 +0000 |
|---|---|---|
| committer | Pekka Enberg <penberg@kernel.org> | 2012-12-11 12:14:27 +0200 |
| commit | 45530c4474d258b822e2639c786606d8257aad8b (patch) | |
| tree | 87b6569f777987037c490b9660826a02e17e228d /mm/slub.c | |
| parent | 3c58346525d82625e68e24f071804c2dc057b6f4 (diff) | |
mm, sl[au]b: create common functions for boot slab creation
Use a special function to create kmalloc caches and use that function in
SLAB and SLUB.
Acked-by: Joonsoo Kim <js1304@gmail.com>
Reviewed-by: Glauber Costa <glommer@parallels.com>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
Diffstat (limited to 'mm/slub.c')
| -rw-r--r-- | mm/slub.c | 37 |
1 files changed, 5 insertions, 32 deletions
diff --git a/mm/slub.c b/mm/slub.c index 33576b0cfc41..1be172c157c3 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -3245,32 +3245,6 @@ static int __init setup_slub_nomerge(char *str) __setup("slub_nomerge", setup_slub_nomerge); -static struct kmem_cache *__init create_kmalloc_cache(const char *name, - int size, unsigned int flags) -{ - struct kmem_cache *s; - - s = kmem_cache_zalloc(kmem_cache, GFP_NOWAIT); - - s->name = name; - s->size = s->object_size = size; - s->align = ARCH_KMALLOC_MINALIGN; - - /* - * This function is called with IRQs disabled during early-boot on - * single CPU so there's no need to take slab_mutex here. - */ - if (kmem_cache_open(s, flags)) - goto panic; - - list_add(&s->list, &slab_caches); - return s; - -panic: - panic("Creation of kmalloc slab %s size=%d failed.\n", name, size); - return NULL; -} - /* * Conversion table for small slabs sizes / 8 to the index in the * kmalloc array. This is necessary for slabs < 192 since we have non power @@ -3948,6 +3922,10 @@ int __kmem_cache_create(struct kmem_cache *s, unsigned long flags) if (err) return err; + /* Mutex is not taken during early boot */ + if (slab_state <= UP) + return 0; + mutex_unlock(&slab_mutex); err = sysfs_slab_add(s); mutex_lock(&slab_mutex); @@ -5249,13 +5227,8 @@ static int sysfs_slab_add(struct kmem_cache *s) { int err; const char *name; - int unmergeable; - - if (slab_state < FULL) - /* Defer until later */ - return 0; + int unmergeable = slab_unmergeable(s); - unmergeable = slab_unmergeable(s); if (unmergeable) { /* * Slabcache can never be merged so we can use the name proper. |