diff options
| -rw-r--r-- | mm/slab.c | 34 | ||||
| -rw-r--r-- | mm/slab.h | 4 | ||||
| -rw-r--r-- | mm/slab_common.c | 18 | ||||
| -rw-r--r-- | mm/slob.c | 42 | ||||
| -rw-r--r-- | mm/slub.c | 24 |
5 files changed, 52 insertions, 70 deletions
diff --git a/mm/slab.c b/mm/slab.c index de961b48a6a4..abc83334e5fb 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -1676,7 +1676,8 @@ void __init kmem_cache_init(void) * bug. */ - sizes[INDEX_AC].cs_cachep = __kmem_cache_create(names[INDEX_AC].name, + sizes[INDEX_AC].cs_cachep = kmem_cache_zalloc(kmem_cache, GFP_NOWAIT); + __kmem_cache_create(sizes[INDEX_AC].cs_cachep, names[INDEX_AC].name, sizes[INDEX_AC].cs_size, ARCH_KMALLOC_MINALIGN, ARCH_KMALLOC_FLAGS|SLAB_PANIC, @@ -1684,8 +1685,8 @@ void __init kmem_cache_init(void) list_add(&sizes[INDEX_AC].cs_cachep->list, &slab_caches); if (INDEX_AC != INDEX_L3) { - sizes[INDEX_L3].cs_cachep = - __kmem_cache_create(names[INDEX_L3].name, + sizes[INDEX_L3].cs_cachep = kmem_cache_zalloc(kmem_cache, GFP_NOWAIT); + __kmem_cache_create(sizes[INDEX_L3].cs_cachep, names[INDEX_L3].name, sizes[INDEX_L3].cs_size, ARCH_KMALLOC_MINALIGN, ARCH_KMALLOC_FLAGS|SLAB_PANIC, @@ -1704,7 +1705,8 @@ void __init kmem_cache_init(void) * allow tighter packing of the smaller caches. */ if (!sizes->cs_cachep) { - sizes->cs_cachep = __kmem_cache_create(names->name, + sizes->cs_cachep = kmem_cache_zalloc(kmem_cache, GFP_NOWAIT); + __kmem_cache_create(sizes->cs_cachep, names->name, sizes->cs_size, ARCH_KMALLOC_MINALIGN, ARCH_KMALLOC_FLAGS|SLAB_PANIC, @@ -1712,7 +1714,8 @@ void __init kmem_cache_init(void) list_add(&sizes->cs_cachep->list, &slab_caches); } #ifdef CONFIG_ZONE_DMA - sizes->cs_dmacachep = __kmem_cache_create( + sizes->cs_dmacachep = kmem_cache_zalloc(kmem_cache, GFP_NOWAIT); + __kmem_cache_create(sizes->cs_dmacachep, names->name_dma, sizes->cs_size, ARCH_KMALLOC_MINALIGN, @@ -2356,13 +2359,13 @@ static int __init_refok setup_cpu_cache(struct kmem_cache *cachep, gfp_t gfp) * cacheline. This can be beneficial if you're counting cycles as closely * as davem. */ -struct kmem_cache * -__kmem_cache_create (const char *name, size_t size, size_t align, +int +__kmem_cache_create (struct kmem_cache *cachep, const char *name, size_t size, size_t align, unsigned long flags, void (*ctor)(void *)) { size_t left_over, slab_size, ralign; - struct kmem_cache *cachep = NULL; gfp_t gfp; + int err; #if DEBUG #if FORCED_DEBUG @@ -2450,11 +2453,6 @@ __kmem_cache_create (const char *name, size_t size, size_t align, else gfp = GFP_NOWAIT; - /* Get cache's description obj. */ - cachep = kmem_cache_zalloc(kmem_cache, gfp); - if (!cachep) - return NULL; - cachep->nodelists = (struct kmem_list3 **)&cachep->array[nr_cpu_ids]; cachep->object_size = size; cachep->align = align; @@ -2509,8 +2507,7 @@ __kmem_cache_create (const char *name, size_t size, size_t align, if (!cachep->num) { printk(KERN_ERR "kmem_cache_create: couldn't create cache %s.\n", name); - kmem_cache_free(kmem_cache, cachep); - return NULL; + return -E2BIG; } slab_size = ALIGN(cachep->num * sizeof(kmem_bufctl_t) + sizeof(struct slab), align); @@ -2567,9 +2564,10 @@ __kmem_cache_create (const char *name, size_t size, size_t align, cachep->name = name; cachep->refcount = 1; - if (setup_cpu_cache(cachep, gfp)) { + err = setup_cpu_cache(cachep, gfp); + if (err) { __kmem_cache_shutdown(cachep); - return NULL; + return err; } if (flags & SLAB_DEBUG_OBJECTS) { @@ -2582,7 +2580,7 @@ __kmem_cache_create (const char *name, size_t size, size_t align, slab_set_debugobj_lock_classes(cachep); } - return cachep; + return 0; } #if DEBUG diff --git a/mm/slab.h b/mm/slab.h index ec7b94429b99..077b07a24efe 100644 --- a/mm/slab.h +++ b/mm/slab.h @@ -33,8 +33,8 @@ extern struct list_head slab_caches; extern struct kmem_cache *kmem_cache; /* Functions provided by the slab allocators */ -struct kmem_cache *__kmem_cache_create(const char *name, size_t size, - size_t align, unsigned long flags, void (*ctor)(void *)); +extern int __kmem_cache_create(struct kmem_cache *, const char *name, + size_t size, size_t align, unsigned long flags, void (*ctor)(void *)); #ifdef CONFIG_SLUB struct kmem_cache *__kmem_cache_alias(const char *name, size_t size, diff --git a/mm/slab_common.c b/mm/slab_common.c index 4f722084baed..f50d2ed4fbf1 100644 --- a/mm/slab_common.c +++ b/mm/slab_common.c @@ -119,19 +119,21 @@ struct kmem_cache *kmem_cache_create(const char *name, size_t size, size_t align if (s) goto out_locked; - s = __kmem_cache_create(n, size, align, flags, ctor); - + s = kmem_cache_zalloc(kmem_cache, GFP_KERNEL); if (s) { - /* - * Check if the slab has actually been created and if it was a - * real instatiation. Aliases do not belong on the list - */ - if (s->refcount == 1) + err = __kmem_cache_create(s, n, size, align, flags, ctor); + if (!err) + list_add(&s->list, &slab_caches); + else { + kfree(n); + kmem_cache_free(kmem_cache, s); + } + } else { kfree(n); - err = -ENOSYS; /* Until __kmem_cache_create returns code */ + err = -ENOMEM; } out_locked: diff --git a/mm/slob.c b/mm/slob.c index 50f605322700..9b0cee1e8475 100644 --- a/mm/slob.c +++ b/mm/slob.c @@ -508,34 +508,26 @@ size_t ksize(const void *block) } EXPORT_SYMBOL(ksize); -struct kmem_cache *__kmem_cache_create(const char *name, size_t size, +int __kmem_cache_create(struct kmem_cache *c, const char *name, size_t size, size_t align, unsigned long flags, void (*ctor)(void *)) { - struct kmem_cache *c; - - c = slob_alloc(sizeof(struct kmem_cache), - GFP_KERNEL, ARCH_KMALLOC_MINALIGN, -1); - - if (c) { - c->name = name; - c->size = size; - if (flags & SLAB_DESTROY_BY_RCU) { - /* leave room for rcu footer at the end of object */ - c->size += sizeof(struct slob_rcu); - } - c->flags = flags; - c->ctor = ctor; - /* ignore alignment unless it's forced */ - c->align = (flags & SLAB_HWCACHE_ALIGN) ? SLOB_ALIGN : 0; - if (c->align < ARCH_SLAB_MINALIGN) - c->align = ARCH_SLAB_MINALIGN; - if (c->align < align) - c->align = align; - - kmemleak_alloc(c, sizeof(struct kmem_cache), 1, GFP_KERNEL); - c->refcount = 1; + c->name = name; + c->size = size; + if (flags & SLAB_DESTROY_BY_RCU) { + /* leave room for rcu footer at the end of object */ + c->size += sizeof(struct slob_rcu); } - return c; + c->flags = flags; + c->ctor = ctor; + /* ignore alignment unless it's forced */ + c->align = (flags & SLAB_HWCACHE_ALIGN) ? SLOB_ALIGN : 0; + if (c->align < ARCH_SLAB_MINALIGN) + c->align = ARCH_SLAB_MINALIGN; + if (c->align < align) + c->align = align; + + c->refcount = 1; + return 0; } void *kmem_cache_alloc_node(struct kmem_cache *c, gfp_t flags, int node) diff --git a/mm/slub.c b/mm/slub.c index 8d00fd78df23..0ad3fffc7d23 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -3034,7 +3034,6 @@ static int kmem_cache_open(struct kmem_cache *s, size_t align, unsigned long flags, void (*ctor)(void *)) { - memset(s, 0, kmem_size); s->name = name; s->ctor = ctor; s->object_size = size; @@ -3109,7 +3108,7 @@ static int kmem_cache_open(struct kmem_cache *s, goto error; if (alloc_kmem_cache_cpus(s)) - return 1; + return 0; free_kmem_cache_nodes(s); error: @@ -3118,7 +3117,7 @@ error: "order=%u offset=%u flags=%lx\n", s->name, (unsigned long)size, s->size, oo_order(s->oo), s->offset, flags); - return 0; + return -EINVAL; } /* @@ -3260,13 +3259,13 @@ static struct kmem_cache *__init create_kmalloc_cache(const char *name, { struct kmem_cache *s; - s = kmem_cache_alloc(kmem_cache, GFP_NOWAIT); + s = kmem_cache_zalloc(kmem_cache, GFP_NOWAIT); /* * 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, name, size, ARCH_KMALLOC_MINALIGN, + if (kmem_cache_open(s, name, size, ARCH_KMALLOC_MINALIGN, flags, NULL)) goto panic; @@ -3944,20 +3943,11 @@ struct kmem_cache *__kmem_cache_alias(const char *name, size_t size, return s; } -struct kmem_cache *__kmem_cache_create(const char *name, size_t size, +int __kmem_cache_create(struct kmem_cache *s, + const char *name, size_t size, size_t align, unsigned long flags, void (*ctor)(void *)) { - struct kmem_cache *s; - - s = kmem_cache_alloc(kmem_cache, GFP_KERNEL); - if (s) { - if (kmem_cache_open(s, name, - size, align, flags, ctor)) { - return s; - } - kmem_cache_free(kmem_cache, s); - } - return NULL; + return kmem_cache_open(s, name, size, align, flags, ctor); } #ifdef CONFIG_SMP |