Commit 01ba8251 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

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

* 'slab/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6:
  slub: Add statistics for this_cmpxchg_double failures
  slub: Add missing irq restore for the OOM path
parents ab70a1d7 4fdccdfb

include/linux/slub_def.h

+1 −0
Original line number Diff line number Diff line
@@ -32,6 +32,7 @@ enum stat_item { 
	DEACTIVATE_TO_TAIL,	/* Cpu slab was moved to the tail of partials */

	DEACTIVATE_REMOTE_FREES,/* Slab contained remotely freed objects */

	ORDER_FALLBACK,		/* Number of times fallback was necessary */

	CMPXCHG_DOUBLE_CPU_FAIL,/* Failure of this_cpu_cmpxchg_double */

	NR_SLUB_STAT_ITEMS };



struct kmem_cache_cpu {

mm/slub.c

+5 −1
Original line number Diff line number Diff line
@@ -217,7 +217,7 @@ static inline void sysfs_slab_remove(struct kmem_cache *s) 


#endif



static inline void stat(struct kmem_cache *s, enum stat_item si)

static inline void stat(const struct kmem_cache *s, enum stat_item si)

{

#ifdef CONFIG_SLUB_STATS

	__this_cpu_inc(s->cpu_slab->stat[si]);
@@ -1597,6 +1597,7 @@ static inline void note_cmpxchg_failure(const char *n, 
		printk("for unknown reason: actual=%lx was=%lx target=%lx\n",

			actual_tid, tid, next_tid(tid));

#endif

	stat(s, CMPXCHG_DOUBLE_CPU_FAIL);

}



#endif
@@ -1857,6 +1858,9 @@ static void *__slab_alloc(struct kmem_cache *s, gfp_t gfpflags, int node, 
	}

	if (!(gfpflags & __GFP_NOWARN) && printk_ratelimit())

		slab_out_of_memory(s, gfpflags, node);

#ifdef CONFIG_CMPXCHG_LOCAL

	local_irq_restore(flags);

#endif

	return NULL;

debug:

	if (!alloc_debug_processing(s, c->page, object, addr))