Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6

#define SLAB_CACHE_DMA		0x00004000UL	/* Use GFP_DMA memory */

#define SLAB_STORE_USER		0x00010000UL	/* DEBUG: Store the last owner for bug hunting */

#define SLAB_PANIC		0x00040000UL	/* Panic if kmem_cache_create() fails */

/*

 * SLAB_DESTROY_BY_RCU - **WARNING** READ THIS!

 *

 * This delays freeing the SLAB page by a grace period, it does _NOT_

 * delay object freeing. This means that if you do kmem_cache_free()

 * that memory location is free to be reused at any time. Thus it may

 * be possible to see another object there in the same RCU grace period.

 *

 * This feature only ensures the memory location backing the object

 * stays valid, the trick to using this is relying on an independent

 * object validation pass. Something like:

 *

 *  rcu_read_lock()

 * again:

 *  obj = lockless_lookup(key);

 *  if (obj) {

 *    if (!try_get_ref(obj)) // might fail for free objects

 *      goto again;

 *

 *    if (obj->key != key) { // not the object we expected

 *      put_ref(obj);

 *      goto again;

 *    }

 *  }

 *  rcu_read_unlock();

 *

 * See also the comment on struct slab_rcu in mm/slab.c.

 */

#define SLAB_DESTROY_BY_RCU	0x00080000UL	/* Defer freeing slabs to RCU */

#define SLAB_MEM_SPREAD		0x00100000UL	/* Spread some memory over cpuset */

#define SLAB_TRACE		0x00200000UL	/* Trace allocations and frees */

	help

	  The regular slab allocator that is established and known to work

	  well in all environments. It organizes cache hot objects in

	  per cpu and per node queues. SLAB is the default choice for

	  a slab allocator.

	  per cpu and per node queues.

config SLUB

	bool "SLUB (Unqueued Allocator)"

	   instead of managing queues of cached objects (SLAB approach).

	   Per cpu caching is realized using slabs of objects instead

	   of queues of objects. SLUB can use memory efficiently

	   and has enhanced diagnostics.

	   and has enhanced diagnostics. SLUB is the default choice for

	   a slab allocator.

config SLOB

	depends on EMBEDDED