diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/slub.c | 57 |
1 files changed, 20 insertions, 37 deletions
diff --git a/mm/slub.c b/mm/slub.c index 347c11e80d8..cfc5301afe4 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -297,9 +297,6 @@ static void set_track(struct kmem_cache *s, void *object, memset(p, 0, sizeof(struct track)); } -#define set_tracking(__s, __o, __a) set_track(__s, __o, __a, \ - __builtin_return_address(0)) - static void init_tracking(struct kmem_cache *s, void *object) { if (s->flags & SLAB_STORE_USER) { @@ -1163,8 +1160,8 @@ static void flush_all(struct kmem_cache *s) * Fastpath is not possible if we need to get a new slab or have * debugging enabled (which means all slabs are marked with PageError) */ -static __always_inline void *slab_alloc(struct kmem_cache *s, - gfp_t gfpflags, int node) +static void *slab_alloc(struct kmem_cache *s, + gfp_t gfpflags, int node, void *addr) { struct page *page; void **object; @@ -1238,20 +1235,20 @@ debug: if (!alloc_object_checks(s, page, object)) goto another_slab; if (s->flags & SLAB_STORE_USER) - set_tracking(s, object, TRACK_ALLOC); + set_track(s, object, TRACK_ALLOC, addr); goto have_object; } void *kmem_cache_alloc(struct kmem_cache *s, gfp_t gfpflags) { - return slab_alloc(s, gfpflags, -1); + return slab_alloc(s, gfpflags, -1, __builtin_return_address(0)); } EXPORT_SYMBOL(kmem_cache_alloc); #ifdef CONFIG_NUMA void *kmem_cache_alloc_node(struct kmem_cache *s, gfp_t gfpflags, int node) { - return slab_alloc(s, gfpflags, node); + return slab_alloc(s, gfpflags, node, __builtin_return_address(0)); } EXPORT_SYMBOL(kmem_cache_alloc_node); #endif @@ -1262,7 +1259,8 @@ EXPORT_SYMBOL(kmem_cache_alloc_node); * * No special cachelines need to be read */ -static void slab_free(struct kmem_cache *s, struct page *page, void *x) +static void slab_free(struct kmem_cache *s, struct page *page, + void *x, void *addr) { void *prior; void **object = (void *)x; @@ -1314,20 +1312,20 @@ slab_empty: return; debug: - if (free_object_checks(s, page, x)) - goto checks_ok; - goto out_unlock; + if (!free_object_checks(s, page, x)) + goto out_unlock; + if (s->flags & SLAB_STORE_USER) + set_track(s, x, TRACK_FREE, addr); + goto checks_ok; } void kmem_cache_free(struct kmem_cache *s, void *x) { - struct page * page; + struct page *page; page = virt_to_head_page(x); - if (unlikely(PageError(page) && (s->flags & SLAB_STORE_USER))) - set_tracking(s, x, TRACK_FREE); - slab_free(s, page, x); + slab_free(s, page, x, __builtin_return_address(0)); } EXPORT_SYMBOL(kmem_cache_free); @@ -2018,7 +2016,7 @@ void *__kmalloc(size_t size, gfp_t flags) struct kmem_cache *s = get_slab(size, flags); if (s) - return kmem_cache_alloc(s, flags); + return slab_alloc(s, flags, -1, __builtin_return_address(0)); return NULL; } EXPORT_SYMBOL(__kmalloc); @@ -2029,7 +2027,7 @@ void *__kmalloc_node(size_t size, gfp_t flags, int node) struct kmem_cache *s = get_slab(size, flags); if (s) - return kmem_cache_alloc_node(s, flags, node); + return slab_alloc(s, flags, node, __builtin_return_address(0)); return NULL; } EXPORT_SYMBOL(__kmalloc_node); @@ -2075,12 +2073,9 @@ void kfree(const void *x) return; page = virt_to_head_page(x); - s = page->slab; - if (unlikely(PageError(page) && (s->flags & SLAB_STORE_USER))) - set_tracking(s, (void *)x, TRACK_FREE); - slab_free(s, page, (void *)x); + slab_free(s, page, (void *)x, __builtin_return_address(0)); } EXPORT_SYMBOL(kfree); @@ -2289,7 +2284,7 @@ void *kmem_cache_zalloc(struct kmem_cache *s, gfp_t flags) { void *x; - x = kmem_cache_alloc(s, flags); + x = slab_alloc(s, flags, -1, __builtin_return_address(0)); if (x) memset(x, 0, s->objsize); return x; @@ -2497,34 +2492,22 @@ static void resiliency_test(void) {}; void *__kmalloc_track_caller(size_t size, gfp_t gfpflags, void *caller) { struct kmem_cache *s = get_slab(size, gfpflags); - void *object; if (!s) return NULL; - object = kmem_cache_alloc(s, gfpflags); - - if (object && (s->flags & SLAB_STORE_USER)) - set_track(s, object, TRACK_ALLOC, caller); - - return object; + return slab_alloc(s, gfpflags, -1, caller); } void *__kmalloc_node_track_caller(size_t size, gfp_t gfpflags, int node, void *caller) { struct kmem_cache *s = get_slab(size, gfpflags); - void *object; if (!s) return NULL; - object = kmem_cache_alloc_node(s, gfpflags, node); - - if (object && (s->flags & SLAB_STORE_USER)) - set_track(s, object, TRACK_ALLOC, caller); - - return object; + return slab_alloc(s, gfpflags, node, caller); } #ifdef CONFIG_SYSFS |