diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-03-22 16:26:57 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-03-22 16:26:57 -0700 |
| commit | 01ba82514603593bb11589e2ea2afdeba1921636 (patch) | |
| tree | c66c762ac6bb98c450e6852aee914e883449c488 | |
| parent | ab70a1d7c7fc6665d83f41b5ce790ff8376e0b81 (diff) | |
| parent | 4fdccdfbb4652a7bbac8adbce7449eb093775118 (diff) | |
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
| -rw-r--r-- | include/linux/slub_def.h | 1 | ||||
| -rw-r--r-- | mm/slub.c | 6 |
2 files changed, 6 insertions, 1 deletions
diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h index 90fbb6d87e11..45ca123e8002 100644 --- a/include/linux/slub_def.h +++ b/include/linux/slub_def.h @@ -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 { diff --git a/mm/slub.c b/mm/slub.c index 7e4f835e32ab..93de30db95f5 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -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 @@ new_slab: } 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)) |