diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-06-13 13:00:53 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-06-13 13:00:53 -0700 |
| commit | 40779859de0f73b40390c6401a024d06cf024290 (patch) | |
| tree | b799c66c3886a8be5c40c3c382f1a5feda7dabef /mm | |
| parent | ffdb8f1bfbd9cef1394f5d3c4a774015d4ac0f97 (diff) | |
| parent | a947eb95ea03199da7408a64baa97fbb613e9b84 (diff) | |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6:
SLAB: Record actual last user of freed objects.
slub: always align cpu_slab to honor cmpxchg_double requirement
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/slab.c | 9 | ||||
| -rw-r--r-- | mm/slub.c | 12 |
2 files changed, 9 insertions, 12 deletions
diff --git a/mm/slab.c b/mm/slab.c index bcfa4987c8a..d96e223de77 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -3604,13 +3604,14 @@ free_done: * Release an obj back to its cache. If the obj has a constructed state, it must * be in this state _before_ it is released. Called with disabled ints. */ -static inline void __cache_free(struct kmem_cache *cachep, void *objp) +static inline void __cache_free(struct kmem_cache *cachep, void *objp, + void *caller) { struct array_cache *ac = cpu_cache_get(cachep); check_irq_off(); kmemleak_free_recursive(objp, cachep->flags); - objp = cache_free_debugcheck(cachep, objp, __builtin_return_address(0)); + objp = cache_free_debugcheck(cachep, objp, caller); kmemcheck_slab_free(cachep, objp, obj_size(cachep)); @@ -3801,7 +3802,7 @@ void kmem_cache_free(struct kmem_cache *cachep, void *objp) debug_check_no_locks_freed(objp, obj_size(cachep)); if (!(cachep->flags & SLAB_DEBUG_OBJECTS)) debug_check_no_obj_freed(objp, obj_size(cachep)); - __cache_free(cachep, objp); + __cache_free(cachep, objp, __builtin_return_address(0)); local_irq_restore(flags); trace_kmem_cache_free(_RET_IP_, objp); @@ -3831,7 +3832,7 @@ void kfree(const void *objp) c = virt_to_cache(objp); debug_check_no_locks_freed(objp, obj_size(c)); debug_check_no_obj_freed(objp, obj_size(c)); - __cache_free(c, (void *)objp); + __cache_free(c, (void *)objp, __builtin_return_address(0)); local_irq_restore(flags); } EXPORT_SYMBOL(kfree); diff --git a/mm/slub.c b/mm/slub.c index 7be0223531b..35f351f2619 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -2320,16 +2320,12 @@ static inline int alloc_kmem_cache_cpus(struct kmem_cache *s) BUILD_BUG_ON(PERCPU_DYNAMIC_EARLY_SIZE < SLUB_PAGE_SHIFT * sizeof(struct kmem_cache_cpu)); -#ifdef CONFIG_CMPXCHG_LOCAL /* - * Must align to double word boundary for the double cmpxchg instructions - * to work. + * Must align to double word boundary for the double cmpxchg + * instructions to work; see __pcpu_double_call_return_bool(). */ - s->cpu_slab = __alloc_percpu(sizeof(struct kmem_cache_cpu), 2 * sizeof(void *)); -#else - /* Regular alignment is sufficient */ - s->cpu_slab = alloc_percpu(struct kmem_cache_cpu); -#endif + s->cpu_slab = __alloc_percpu(sizeof(struct kmem_cache_cpu), + 2 * sizeof(void *)); if (!s->cpu_slab) return 0; |