diff options
| author |   Christoph Lameter <cl@linux.com> | 2012-07-06 15:25:11 -0500 |
|---|---|---|
| committer |   Pekka Enberg <penberg@kernel.org> | 2012-07-09 12:13:35 +0300 |
| commit | 97d06609158e61f6bdf538c4a6788e2de492236f (patch) | |
| tree | fa3f57ff3e2d3f4f866d84dd9d634ade43941be8 /mm/slab.h | |
| parent | mm, sl[aou]b: Extract common code for kmem_cache_create() (diff) | |
| download | linux-dev-97d06609158e61f6bdf538c4a6788e2de492236f.tar.xz linux-dev-97d06609158e61f6bdf538c4a6788e2de492236f.zip | |
mm, sl[aou]b: Common definition for boot state of the slab allocators
All allocators have some sort of support for the bootstrap status.
Setup a common definition for the boot states and make all slab
allocators use that definition.
Reviewed-by: Glauber Costa <glommer@parallels.com>
Reviewed-by: Joonsoo Kim <js1304@gmail.com>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
Diffstat (limited to 'mm/slab.h')
| -rw-r--r-- | mm/slab.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/mm/slab.h b/mm/slab.h new file mode 100644 index 000000000000..f9a9815cdc82 --- /dev/null +++ b/mm/slab.h @@ -0,0 +1,29 @@ +#ifndef MM_SLAB_H +#define MM_SLAB_H +/* + * Internal slab definitions + */ + +/* + * State of the slab allocator. + * + * This is used to describe the states of the allocator during bootup. + * Allocators use this to gradually bootstrap themselves. Most allocators + * have the problem that the structures used for managing slab caches are + * allocated from slab caches themselves. + */ +enum slab_state { + DOWN, /* No slab functionality yet */ + PARTIAL, /* SLUB: kmem_cache_node available */ + PARTIAL_ARRAYCACHE, /* SLAB: kmalloc size for arraycache available */ + PARTIAL_L3, /* SLAB: kmalloc size for l3 struct available */ + UP, /* Slab caches usable but not all extras yet */ + FULL /* Everything is working */ +}; + +extern enum slab_state slab_state; + +struct kmem_cache *__kmem_cache_create(const char *name, size_t size, + size_t align, unsigned long flags, void (*ctor)(void *)); + +#endif |