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| 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/slab_common.c | |
| parent | 3c58346525d82625e68e24f071804c2dc057b6f4 (diff) | |
| download | kernel-common-45530c4474d258b822e2639c786606d8257aad8b.tar.gz kernel-common-45530c4474d258b822e2639c786606d8257aad8b.tar.bz2 kernel-common-45530c4474d258b822e2639c786606d8257aad8b.zip | |
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/slab_common.c')
| -rw-r--r-- | mm/slab_common.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/mm/slab_common.c b/mm/slab_common.c index b705be7faa48..497b45c25bae 100644 --- a/mm/slab_common.c +++ b/mm/slab_common.c @@ -202,6 +202,42 @@ int slab_is_available(void) return slab_state >= UP; } +#ifndef CONFIG_SLOB +/* Create a cache during boot when no slab services are available yet */ +void __init create_boot_cache(struct kmem_cache *s, const char *name, size_t size, + unsigned long flags) +{ + int err; + + s->name = name; + s->size = s->object_size = size; + s->align = ARCH_KMALLOC_MINALIGN; + err = __kmem_cache_create(s, flags); + + if (err) + panic("Creation of kmalloc slab %s size=%zd failed. Reason %d\n", + name, size, err); + + s->refcount = -1; /* Exempt from merging for now */ +} + +struct kmem_cache *__init create_kmalloc_cache(const char *name, size_t size, + unsigned long flags) +{ + struct kmem_cache *s = kmem_cache_zalloc(kmem_cache, GFP_NOWAIT); + + if (!s) + panic("Out of memory when creating slab %s\n", name); + + create_boot_cache(s, name, size, flags); + list_add(&s->list, &slab_caches); + s->refcount = 1; + return s; +} + +#endif /* !CONFIG_SLOB */ + + #ifdef CONFIG_SLABINFO static void print_slabinfo_header(struct seq_file *m) { |