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

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* '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
This commit is contained in:
Linus Torvalds 2011-03-22 16:26:57 -07:00
commit 01ba825146
2 changed files with 6 additions and 1 deletions
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1
include/linux/slub_def.h
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@ -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 {

6
mm/slub.c
View File

@ -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))