diff options
Diffstat (limited to 'mm/slab.c')
| -rw-r--r-- | mm/slab.c | 356 |
1 files changed, 147 insertions, 209 deletions
diff --git a/mm/slab.c b/mm/slab.c index 811af03a14ef..33d3363658df 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -498,14 +498,6 @@ static void **dbg_userword(struct kmem_cache *cachep, void *objp) #endif -#ifdef CONFIG_TRACING -size_t slab_buffer_size(struct kmem_cache *cachep) -{ - return cachep->size; -} -EXPORT_SYMBOL(slab_buffer_size); -#endif - /* * Do not go above this order unless 0 objects fit into the slab or * overridden on the command line. @@ -515,13 +507,6 @@ EXPORT_SYMBOL(slab_buffer_size); static int slab_max_order = SLAB_MAX_ORDER_LO; static bool slab_max_order_set __initdata; -static inline struct kmem_cache *page_get_cache(struct page *page) -{ - page = compound_head(page); - BUG_ON(!PageSlab(page)); - return page->slab_cache; -} - static inline struct kmem_cache *virt_to_cache(const void *obj) { struct page *page = virt_to_head_page(obj); @@ -585,9 +570,9 @@ static struct arraycache_init initarray_generic = { {0, BOOT_CPUCACHE_ENTRIES, 1, 0} }; /* internal cache of cache description objs */ -static struct kmem_list3 *cache_cache_nodelists[MAX_NUMNODES]; -static struct kmem_cache cache_cache = { - .nodelists = cache_cache_nodelists, +static struct kmem_list3 *kmem_cache_nodelists[MAX_NUMNODES]; +static struct kmem_cache kmem_cache_boot = { + .nodelists = kmem_cache_nodelists, .batchcount = 1, .limit = BOOT_CPUCACHE_ENTRIES, .shared = 1, @@ -810,6 +795,7 @@ static void cache_estimate(unsigned long gfporder, size_t buffer_size, *left_over = slab_size - nr_objs*buffer_size - mgmt_size; } +#if DEBUG #define slab_error(cachep, msg) __slab_error(__func__, cachep, msg) static void __slab_error(const char *function, struct kmem_cache *cachep, @@ -818,7 +804,9 @@ static void __slab_error(const char *function, struct kmem_cache *cachep, printk(KERN_ERR "slab error in %s(): cache `%s': %s\n", function, cachep->name, msg); dump_stack(); + add_taint(TAINT_BAD_PAGE); } +#endif /* * By default on NUMA we use alien caches to stage the freeing of @@ -900,7 +888,7 @@ static void __cpuinit start_cpu_timer(int cpu) */ if (keventd_up() && reap_work->work.func == NULL) { init_reap_node(cpu); - INIT_DELAYED_WORK_DEFERRABLE(reap_work, cache_reap); + INIT_DEFERRABLE_WORK(reap_work, cache_reap); schedule_delayed_work_on(cpu, reap_work, __round_jiffies_relative(HZ, cpu)); } @@ -983,7 +971,7 @@ static void *__ac_get_obj(struct kmem_cache *cachep, struct array_cache *ac, } /* The caller cannot use PFMEMALLOC objects, find another one */ - for (i = 1; i < ac->avail; i++) { + for (i = 0; i < ac->avail; i++) { /* If a !PFMEMALLOC object is found, swap them */ if (!is_obj_pfmemalloc(ac->entry[i])) { objp = ac->entry[i]; @@ -1000,7 +988,7 @@ static void *__ac_get_obj(struct kmem_cache *cachep, struct array_cache *ac, l3 = cachep->nodelists[numa_mem_id()]; if (!list_empty(&l3->slabs_free) && force_refill) { struct slab *slabp = virt_to_slab(objp); - ClearPageSlabPfmemalloc(virt_to_page(slabp->s_mem)); + ClearPageSlabPfmemalloc(virt_to_head_page(slabp->s_mem)); clear_obj_pfmemalloc(&objp); recheck_pfmemalloc_active(cachep, ac); return objp; @@ -1032,7 +1020,7 @@ static void *__ac_put_obj(struct kmem_cache *cachep, struct array_cache *ac, { if (unlikely(pfmemalloc_active)) { /* Some pfmemalloc slabs exist, check if this is one */ - struct page *page = virt_to_page(objp); + struct page *page = virt_to_head_page(objp); if (PageSlabPfmemalloc(page)) set_obj_pfmemalloc(&objp); } @@ -1601,15 +1589,17 @@ void __init kmem_cache_init(void) int order; int node; + kmem_cache = &kmem_cache_boot; + if (num_possible_nodes() == 1) use_alien_caches = 0; for (i = 0; i < NUM_INIT_LISTS; i++) { kmem_list3_init(&initkmem_list3[i]); if (i < MAX_NUMNODES) - cache_cache.nodelists[i] = NULL; + kmem_cache->nodelists[i] = NULL; } - set_up_list3s(&cache_cache, CACHE_CACHE); + set_up_list3s(kmem_cache, CACHE_CACHE); /* * Fragmentation resistance on low memory - only use bigger @@ -1621,9 +1611,9 @@ void __init kmem_cache_init(void) /* Bootstrap is tricky, because several objects are allocated * from caches that do not exist yet: - * 1) initialize the cache_cache cache: it contains the struct - * kmem_cache structures of all caches, except cache_cache itself: - * cache_cache is statically allocated. + * 1) initialize the kmem_cache cache: it contains the struct + * kmem_cache structures of all caches, except kmem_cache itself: + * kmem_cache is statically allocated. * Initially an __init data area is used for the head array and the * kmem_list3 structures, it's replaced with a kmalloc allocated * array at the end of the bootstrap. @@ -1632,43 +1622,43 @@ void __init kmem_cache_init(void) * An __init data area is used for the head array. * 3) Create the remaining kmalloc caches, with minimally sized * head arrays. - * 4) Replace the __init data head arrays for cache_cache and the first + * 4) Replace the __init data head arrays for kmem_cache and the first * kmalloc cache with kmalloc allocated arrays. - * 5) Replace the __init data for kmem_list3 for cache_cache and + * 5) Replace the __init data for kmem_list3 for kmem_cache and * the other cache's with kmalloc allocated memory. * 6) Resize the head arrays of the kmalloc caches to their final sizes. */ node = numa_mem_id(); - /* 1) create the cache_cache */ + /* 1) create the kmem_cache */ INIT_LIST_HEAD(&slab_caches); - list_add(&cache_cache.list, &slab_caches); - cache_cache.colour_off = cache_line_size(); - cache_cache.array[smp_processor_id()] = &initarray_cache.cache; - cache_cache.nodelists[node] = &initkmem_list3[CACHE_CACHE + node]; + list_add(&kmem_cache->list, &slab_caches); + kmem_cache->colour_off = cache_line_size(); + kmem_cache->array[smp_processor_id()] = &initarray_cache.cache; + kmem_cache->nodelists[node] = &initkmem_list3[CACHE_CACHE + node]; /* * struct kmem_cache size depends on nr_node_ids & nr_cpu_ids */ - cache_cache.size = offsetof(struct kmem_cache, array[nr_cpu_ids]) + + kmem_cache->size = offsetof(struct kmem_cache, array[nr_cpu_ids]) + nr_node_ids * sizeof(struct kmem_list3 *); - cache_cache.object_size = cache_cache.size; - cache_cache.size = ALIGN(cache_cache.size, + kmem_cache->object_size = kmem_cache->size; + kmem_cache->size = ALIGN(kmem_cache->object_size, cache_line_size()); - cache_cache.reciprocal_buffer_size = - reciprocal_value(cache_cache.size); + kmem_cache->reciprocal_buffer_size = + reciprocal_value(kmem_cache->size); for (order = 0; order < MAX_ORDER; order++) { - cache_estimate(order, cache_cache.size, - cache_line_size(), 0, &left_over, &cache_cache.num); - if (cache_cache.num) + cache_estimate(order, kmem_cache->size, + cache_line_size(), 0, &left_over, &kmem_cache->num); + if (kmem_cache->num) break; } - BUG_ON(!cache_cache.num); - cache_cache.gfporder = order; - cache_cache.colour = left_over / cache_cache.colour_off; - cache_cache.slab_size = ALIGN(cache_cache.num * sizeof(kmem_bufctl_t) + + BUG_ON(!kmem_cache->num); + kmem_cache->gfporder = order; + kmem_cache->colour = left_over / kmem_cache->colour_off; + kmem_cache->slab_size = ALIGN(kmem_cache->num * sizeof(kmem_bufctl_t) + sizeof(struct slab), cache_line_size()); /* 2+3) create the kmalloc caches */ @@ -1681,19 +1671,22 @@ void __init kmem_cache_init(void) * bug. */ - sizes[INDEX_AC].cs_cachep = __kmem_cache_create(names[INDEX_AC].name, - sizes[INDEX_AC].cs_size, - ARCH_KMALLOC_MINALIGN, - ARCH_KMALLOC_FLAGS|SLAB_PANIC, - NULL); + sizes[INDEX_AC].cs_cachep = kmem_cache_zalloc(kmem_cache, GFP_NOWAIT); + sizes[INDEX_AC].cs_cachep->name = names[INDEX_AC].name; + sizes[INDEX_AC].cs_cachep->size = sizes[INDEX_AC].cs_size; + sizes[INDEX_AC].cs_cachep->object_size = sizes[INDEX_AC].cs_size; + sizes[INDEX_AC].cs_cachep->align = ARCH_KMALLOC_MINALIGN; + __kmem_cache_create(sizes[INDEX_AC].cs_cachep, ARCH_KMALLOC_FLAGS|SLAB_PANIC); + list_add(&sizes[INDEX_AC].cs_cachep->list, &slab_caches); if (INDEX_AC != INDEX_L3) { - sizes[INDEX_L3].cs_cachep = - __kmem_cache_create(names[INDEX_L3].name, - sizes[INDEX_L3].cs_size, - ARCH_KMALLOC_MINALIGN, - ARCH_KMALLOC_FLAGS|SLAB_PANIC, - NULL); + sizes[INDEX_L3].cs_cachep = kmem_cache_zalloc(kmem_cache, GFP_NOWAIT); + sizes[INDEX_L3].cs_cachep->name = names[INDEX_L3].name; + sizes[INDEX_L3].cs_cachep->size = sizes[INDEX_L3].cs_size; + sizes[INDEX_L3].cs_cachep->object_size = sizes[INDEX_L3].cs_size; + sizes[INDEX_L3].cs_cachep->align = ARCH_KMALLOC_MINALIGN; + __kmem_cache_create(sizes[INDEX_L3].cs_cachep, ARCH_KMALLOC_FLAGS|SLAB_PANIC); + list_add(&sizes[INDEX_L3].cs_cachep->list, &slab_caches); } slab_early_init = 0; @@ -1707,20 +1700,23 @@ void __init kmem_cache_init(void) * allow tighter packing of the smaller caches. */ if (!sizes->cs_cachep) { - sizes->cs_cachep = __kmem_cache_create(names->name, - sizes->cs_size, - ARCH_KMALLOC_MINALIGN, - ARCH_KMALLOC_FLAGS|SLAB_PANIC, - NULL); + sizes->cs_cachep = kmem_cache_zalloc(kmem_cache, GFP_NOWAIT); + sizes->cs_cachep->name = names->name; + sizes->cs_cachep->size = sizes->cs_size; + sizes->cs_cachep->object_size = sizes->cs_size; + sizes->cs_cachep->align = ARCH_KMALLOC_MINALIGN; + __kmem_cache_create(sizes->cs_cachep, ARCH_KMALLOC_FLAGS|SLAB_PANIC); + list_add(&sizes->cs_cachep->list, &slab_caches); } #ifdef CONFIG_ZONE_DMA - sizes->cs_dmacachep = __kmem_cache_create( - names->name_dma, - sizes->cs_size, - ARCH_KMALLOC_MINALIGN, - ARCH_KMALLOC_FLAGS|SLAB_CACHE_DMA| - SLAB_PANIC, - NULL); + sizes->cs_dmacachep = kmem_cache_zalloc(kmem_cache, GFP_NOWAIT); + sizes->cs_dmacachep->name = names->name_dma; + sizes->cs_dmacachep->size = sizes->cs_size; + sizes->cs_dmacachep->object_size = sizes->cs_size; + sizes->cs_dmacachep->align = ARCH_KMALLOC_MINALIGN; + __kmem_cache_create(sizes->cs_dmacachep, + ARCH_KMALLOC_FLAGS|SLAB_CACHE_DMA| SLAB_PANIC); + list_add(&sizes->cs_dmacachep->list, &slab_caches); #endif sizes++; names++; @@ -1731,15 +1727,15 @@ void __init kmem_cache_init(void) ptr = kmalloc(sizeof(struct arraycache_init), GFP_NOWAIT); - BUG_ON(cpu_cache_get(&cache_cache) != &initarray_cache.cache); - memcpy(ptr, cpu_cache_get(&cache_cache), + BUG_ON(cpu_cache_get(kmem_cache) != &initarray_cache.cache); + memcpy(ptr, cpu_cache_get(kmem_cache), sizeof(struct arraycache_init)); /* * Do not assume that spinlocks can be initialized via memcpy: */ spin_lock_init(&ptr->lock); - cache_cache.array[smp_processor_id()] = ptr; + kmem_cache->array[smp_processor_id()] = ptr; ptr = kmalloc(sizeof(struct arraycache_init), GFP_NOWAIT); @@ -1760,7 +1756,7 @@ void __init kmem_cache_init(void) int nid; for_each_online_node(nid) { - init_list(&cache_cache, &initkmem_list3[CACHE_CACHE + nid], nid); + init_list(kmem_cache, &initkmem_list3[CACHE_CACHE + nid], nid); init_list(malloc_sizes[INDEX_AC].cs_cachep, &initkmem_list3[SIZE_AC + nid], nid); @@ -1781,9 +1777,6 @@ void __init kmem_cache_init_late(void) slab_state = UP; - /* Annotate slab for lockdep -- annotate the malloc caches */ - init_lock_keys(); - /* 6) resize the head arrays to their final sizes */ mutex_lock(&slab_mutex); list_for_each_entry(cachep, &slab_caches, list) @@ -1791,6 +1784,9 @@ void __init kmem_cache_init_late(void) BUG(); mutex_unlock(&slab_mutex); + /* Annotate slab for lockdep -- annotate the malloc caches */ + init_lock_keys(); + /* Done! */ slab_state = FULL; @@ -2209,27 +2205,6 @@ static void slab_destroy(struct kmem_cache *cachep, struct slab *slabp) } } -static void __kmem_cache_destroy(struct kmem_cache *cachep) -{ - int i; - struct kmem_list3 *l3; - - for_each_online_cpu(i) - kfree(cachep->array[i]); - - /* NUMA: free the list3 structures */ - for_each_online_node(i) { - l3 = cachep->nodelists[i]; - if (l3) { - kfree(l3->shared); - free_alien_cache(l3->alien); - kfree(l3); - } - } - kmem_cache_free(&cache_cache, cachep); -} - - /** * calculate_slab_order - calculate size (page order) of slabs * @cachep: pointer to the cache that is being created @@ -2366,9 +2341,6 @@ static int __init_refok setup_cpu_cache(struct kmem_cache *cachep, gfp_t gfp) * Cannot be called within a int, but can be interrupted. * The @ctor is run when new pages are allocated by the cache. * - * @name must be valid until the cache is destroyed. This implies that - * the module calling this has to destroy the cache before getting unloaded. - * * The flags are * * %SLAB_POISON - Poison the slab with a known test pattern (a5a5a5a5) @@ -2381,13 +2353,13 @@ static int __init_refok setup_cpu_cache(struct kmem_cache *cachep, gfp_t gfp) * cacheline. This can be beneficial if you're counting cycles as closely * as davem. */ -struct kmem_cache * -__kmem_cache_create (const char *name, size_t size, size_t align, - unsigned long flags, void (*ctor)(void *)) +int +__kmem_cache_create (struct kmem_cache *cachep, unsigned long flags) { size_t left_over, slab_size, ralign; - struct kmem_cache *cachep = NULL; gfp_t gfp; + int err; + size_t size = cachep->size; #if DEBUG #if FORCED_DEBUG @@ -2459,8 +2431,8 @@ __kmem_cache_create (const char *name, size_t size, size_t align, ralign = ARCH_SLAB_MINALIGN; } /* 3) caller mandated alignment */ - if (ralign < align) { - ralign = align; + if (ralign < cachep->align) { + ralign = cachep->align; } /* disable debug if necessary */ if (ralign > __alignof__(unsigned long long)) @@ -2468,21 +2440,14 @@ __kmem_cache_create (const char *name, size_t size, size_t align, /* * 4) Store it. */ - align = ralign; + cachep->align = ralign; if (slab_is_available()) gfp = GFP_KERNEL; else gfp = GFP_NOWAIT; - /* Get cache's description obj. */ - cachep = kmem_cache_zalloc(&cache_cache, gfp); - if (!cachep) - return NULL; - cachep->nodelists = (struct kmem_list3 **)&cachep->array[nr_cpu_ids]; - cachep->object_size = size; - cachep->align = align; #if DEBUG /* @@ -2506,8 +2471,9 @@ __kmem_cache_create (const char *name, size_t size, size_t align, } #if FORCED_DEBUG && defined(CONFIG_DEBUG_PAGEALLOC) if (size >= malloc_sizes[INDEX_L3 + 1].cs_size - && cachep->object_size > cache_line_size() && ALIGN(size, align) < PAGE_SIZE) { - cachep->obj_offset += PAGE_SIZE - ALIGN(size, align); + && cachep->object_size > cache_line_size() + && ALIGN(size, cachep->align) < PAGE_SIZE) { + cachep->obj_offset += PAGE_SIZE - ALIGN(size, cachep->align); size = PAGE_SIZE; } #endif @@ -2527,18 +2493,15 @@ __kmem_cache_create (const char *name, size_t size, size_t align, */ flags |= CFLGS_OFF_SLAB; - size = ALIGN(size, align); + size = ALIGN(size, cachep->align); - left_over = calculate_slab_order(cachep, size, align, flags); + left_over = calculate_slab_order(cachep, size, cachep->align, flags); + + if (!cachep->num) + return -E2BIG; - if (!cachep->num) { - printk(KERN_ERR - "kmem_cache_create: couldn't create cache %s.\n", name); - kmem_cache_free(&cache_cache, cachep); - return NULL; - } slab_size = ALIGN(cachep->num * sizeof(kmem_bufctl_t) - + sizeof(struct slab), align); + + sizeof(struct slab), cachep->align); /* * If the slab has been placed off-slab, and we have enough space then @@ -2566,8 +2529,8 @@ __kmem_cache_create (const char *name, size_t size, size_t align, cachep->colour_off = cache_line_size(); /* Offset must be a multiple of the alignment. */ - if (cachep->colour_off < align) - cachep->colour_off = align; + if (cachep->colour_off < cachep->align) + cachep->colour_off = cachep->align; cachep->colour = left_over / cachep->colour_off; cachep->slab_size = slab_size; cachep->flags = flags; @@ -2588,12 +2551,11 @@ __kmem_cache_create (const char *name, size_t size, size_t align, */ BUG_ON(ZERO_OR_NULL_PTR(cachep->slabp_cache)); } - cachep->ctor = ctor; - cachep->name = name; - if (setup_cpu_cache(cachep, gfp)) { - __kmem_cache_destroy(cachep); - return NULL; + err = setup_cpu_cache(cachep, gfp); + if (err) { + __kmem_cache_shutdown(cachep); + return err; } if (flags & SLAB_DEBUG_OBJECTS) { @@ -2606,9 +2568,7 @@ __kmem_cache_create (const char *name, size_t size, size_t align, slab_set_debugobj_lock_classes(cachep); } - /* cache setup completed, link it into the list */ - list_add(&cachep->list, &slab_caches); - return cachep; + return 0; } #if DEBUG @@ -2767,49 +2727,29 @@ int kmem_cache_shrink(struct kmem_cache *cachep) } EXPORT_SYMBOL(kmem_cache_shrink); -/** - * kmem_cache_destroy - delete a cache - * @cachep: the cache to destroy - * - * Remove a &struct kmem_cache object from the slab cache. - * - * It is expected this function will be called by a module when it is - * unloaded. This will remove the cache completely, and avoid a duplicate - * cache being allocated each time a module is loaded and unloaded, if the - * module doesn't have persistent in-kernel storage across loads and unloads. - * - * The cache must be empty before calling this function. - * - * The caller must guarantee that no one will allocate memory from the cache - * during the kmem_cache_destroy(). - */ -void kmem_cache_destroy(struct kmem_cache *cachep) +int __kmem_cache_shutdown(struct kmem_cache *cachep) { - BUG_ON(!cachep || in_interrupt()); + int i; + struct kmem_list3 *l3; + int rc = __cache_shrink(cachep); - /* Find the cache in the chain of caches. */ - get_online_cpus(); - mutex_lock(&slab_mutex); - /* - * the chain is never empty, cache_cache is never destroyed - */ - list_del(&cachep->list); - if (__cache_shrink(cachep)) { - slab_error(cachep, "Can't free all objects"); - list_add(&cachep->list, &slab_caches); - mutex_unlock(&slab_mutex); - put_online_cpus(); - return; - } + if (rc) + return rc; - if (unlikely(cachep->flags & SLAB_DESTROY_BY_RCU)) - rcu_barrier(); + for_each_online_cpu(i) + kfree(cachep->array[i]); - __kmem_cache_destroy(cachep); - mutex_unlock(&slab_mutex); - put_online_cpus(); + /* NUMA: free the list3 structures */ + for_each_online_node(i) { + l3 = cachep->nodelists[i]; + if (l3) { + kfree(l3->shared); + free_alien_cache(l3->alien); + kfree(l3); + } + } + return 0; } -EXPORT_SYMBOL(kmem_cache_destroy); /* * Get the memory for a slab management obj. @@ -3098,7 +3038,7 @@ static inline void verify_redzone_free(struct kmem_cache *cache, void *obj) } static void *cache_free_debugcheck(struct kmem_cache *cachep, void *objp, - void *caller) + unsigned long caller) { struct page *page; unsigned int objnr; @@ -3118,7 +3058,7 @@ static void *cache_free_debugcheck(struct kmem_cache *cachep, void *objp, *dbg_redzone2(cachep, objp) = RED_INACTIVE; } if (cachep->flags & SLAB_STORE_USER) - *dbg_userword(cachep, objp) = caller; + *dbg_userword(cachep, objp) = (void *)caller; objnr = obj_to_index(cachep, slabp, objp); @@ -3131,7 +3071,7 @@ static void *cache_free_debugcheck(struct kmem_cache *cachep, void *objp, if (cachep->flags & SLAB_POISON) { #ifdef CONFIG_DEBUG_PAGEALLOC if ((cachep->size % PAGE_SIZE)==0 && OFF_SLAB(cachep)) { - store_stackinfo(cachep, objp, (unsigned long)caller); + store_stackinfo(cachep, objp, caller); kernel_map_pages(virt_to_page(objp), cachep->size / PAGE_SIZE, 0); } else { @@ -3285,7 +3225,7 @@ static inline void cache_alloc_debugcheck_before(struct kmem_cache *cachep, #if DEBUG static void *cache_alloc_debugcheck_after(struct kmem_cache *cachep, - gfp_t flags, void *objp, void *caller) + gfp_t flags, void *objp, unsigned long caller) { if (!objp) return objp; @@ -3302,7 +3242,7 @@ static void *cache_alloc_debugcheck_after(struct kmem_cache *cachep, poison_obj(cachep, objp, POISON_INUSE); } if (cachep->flags & SLAB_STORE_USER) - *dbg_userword(cachep, objp) = caller; + *dbg_userword(cachep, objp) = (void *)caller; if (cachep->flags & SLAB_RED_ZONE) { if (*dbg_redzone1(cachep, objp) != RED_INACTIVE || @@ -3343,7 +3283,7 @@ static void *cache_alloc_debugcheck_after(struct kmem_cache *cachep, static bool slab_should_failslab(struct kmem_cache *cachep, gfp_t flags) { - if (cachep == &cache_cache) + if (cachep == kmem_cache) return false; return should_failslab(cachep->object_size, flags, cachep->flags); @@ -3576,8 +3516,8 @@ done: * Fallback to other node is possible if __GFP_THISNODE is not set. */ static __always_inline void * -__cache_alloc_node(struct kmem_cache *cachep, gfp_t flags, int nodeid, - void *caller) +slab_alloc_node(struct kmem_cache *cachep, gfp_t flags, int nodeid, + unsigned long caller) { unsigned long save_flags; void *ptr; @@ -3663,7 +3603,7 @@ __do_cache_alloc(struct kmem_cache *cachep, gfp_t flags) #endif /* CONFIG_NUMA */ static __always_inline void * -__cache_alloc(struct kmem_cache *cachep, gfp_t flags, void *caller) +slab_alloc(struct kmem_cache *cachep, gfp_t flags, unsigned long caller) { unsigned long save_flags; void *objp; @@ -3799,7 +3739,7 @@ free_done: * be in this state _before_ it is released. Called with disabled ints. */ static inline void __cache_free(struct kmem_cache *cachep, void *objp, - void *caller) + unsigned long caller) { struct array_cache *ac = cpu_cache_get(cachep); @@ -3839,7 +3779,7 @@ static inline void __cache_free(struct kmem_cache *cachep, void *objp, */ void *kmem_cache_alloc(struct kmem_cache *cachep, gfp_t flags) { - void *ret = __cache_alloc(cachep, flags, __builtin_return_address(0)); + void *ret = slab_alloc(cachep, flags, _RET_IP_); trace_kmem_cache_alloc(_RET_IP_, ret, cachep->object_size, cachep->size, flags); @@ -3850,14 +3790,14 @@ EXPORT_SYMBOL(kmem_cache_alloc); #ifdef CONFIG_TRACING void * -kmem_cache_alloc_trace(size_t size, struct kmem_cache *cachep, gfp_t flags) +kmem_cache_alloc_trace(struct kmem_cache *cachep, gfp_t flags, size_t size) { void *ret; - ret = __cache_alloc(cachep, flags, __builtin_return_address(0)); + ret = slab_alloc(cachep, flags, _RET_IP_); trace_kmalloc(_RET_IP_, ret, - size, slab_buffer_size(cachep), flags); + size, cachep->size, flags); return ret; } EXPORT_SYMBOL(kmem_cache_alloc_trace); @@ -3866,8 +3806,7 @@ EXPORT_SYMBOL(kmem_cache_alloc_trace); #ifdef CONFIG_NUMA void *kmem_cache_alloc_node(struct kmem_cache *cachep, gfp_t flags, int nodeid) { - void *ret = __cache_alloc_node(cachep, flags, nodeid, - __builtin_return_address(0)); + void *ret = slab_alloc_node(cachep, flags, nodeid, _RET_IP_); trace_kmem_cache_alloc_node(_RET_IP_, ret, cachep->object_size, cachep->size, @@ -3878,17 +3817,17 @@ void *kmem_cache_alloc_node(struct kmem_cache *cachep, gfp_t flags, int nodeid) EXPORT_SYMBOL(kmem_cache_alloc_node); #ifdef CONFIG_TRACING -void *kmem_cache_alloc_node_trace(size_t size, - struct kmem_cache *cachep, +void *kmem_cache_alloc_node_trace(struct kmem_cache *cachep, gfp_t flags, - int nodeid) + int nodeid, + size_t size) { void *ret; - ret = __cache_alloc_node(cachep, flags, nodeid, - __builtin_return_address(0)); + ret = slab_alloc_node(cachep, flags, nodeid, _RET_IP_); + trace_kmalloc_node(_RET_IP_, ret, - size, slab_buffer_size(cachep), + size, cachep->size, flags, nodeid); return ret; } @@ -3896,34 +3835,33 @@ EXPORT_SYMBOL(kmem_cache_alloc_node_trace); #endif static __always_inline void * -__do_kmalloc_node(size_t size, gfp_t flags, int node, void *caller) +__do_kmalloc_node(size_t size, gfp_t flags, int node, unsigned long caller) { struct kmem_cache *cachep; cachep = kmem_find_general_cachep(size, flags); if (unlikely(ZERO_OR_NULL_PTR(cachep))) return cachep; - return kmem_cache_alloc_node_trace(size, cachep, flags, node); + return kmem_cache_alloc_node_trace(cachep, flags, node, size); } #if defined(CONFIG_DEBUG_SLAB) || defined(CONFIG_TRACING) void *__kmalloc_node(size_t size, gfp_t flags, int node) { - return __do_kmalloc_node(size, flags, node, - __builtin_return_address(0)); + return __do_kmalloc_node(size, flags, node, _RET_IP_); } EXPORT_SYMBOL(__kmalloc_node); void *__kmalloc_node_track_caller(size_t size, gfp_t flags, int node, unsigned long caller) { - return __do_kmalloc_node(size, flags, node, (void *)caller); + return __do_kmalloc_node(size, flags, node, caller); } EXPORT_SYMBOL(__kmalloc_node_track_caller); #else void *__kmalloc_node(size_t size, gfp_t flags, int node) { - return __do_kmalloc_node(size, flags, node, NULL); + return __do_kmalloc_node(size, flags, node, 0); } EXPORT_SYMBOL(__kmalloc_node); #endif /* CONFIG_DEBUG_SLAB || CONFIG_TRACING */ @@ -3936,7 +3874,7 @@ EXPORT_SYMBOL(__kmalloc_node); * @caller: function caller for debug tracking of the caller */ static __always_inline void *__do_kmalloc(size_t size, gfp_t flags, - void *caller) + unsigned long caller) { struct kmem_cache *cachep; void *ret; @@ -3949,9 +3887,9 @@ static __always_inline void *__do_kmalloc(size_t size, gfp_t flags, cachep = __find_general_cachep(size, flags); if (unlikely(ZERO_OR_NULL_PTR(cachep))) return cachep; - ret = __cache_alloc(cachep, flags, caller); + ret = slab_alloc(cachep, flags, caller); - trace_kmalloc((unsigned long) caller, ret, + trace_kmalloc(caller, ret, size, cachep->size, flags); return ret; @@ -3961,20 +3899,20 @@ static __always_inline void *__do_kmalloc(size_t size, gfp_t flags, #if defined(CONFIG_DEBUG_SLAB) || defined(CONFIG_TRACING) void *__kmalloc(size_t size, gfp_t flags) { - return __do_kmalloc(size, flags, __builtin_return_address(0)); + return __do_kmalloc(size, flags, _RET_IP_); } EXPORT_SYMBOL(__kmalloc); void *__kmalloc_track_caller(size_t size, gfp_t flags, unsigned long caller) { - return __do_kmalloc(size, flags, (void *)caller); + return __do_kmalloc(size, flags, caller); } EXPORT_SYMBOL(__kmalloc_track_caller); #else void *__kmalloc(size_t size, gfp_t flags) { - return __do_kmalloc(size, flags, NULL); + return __do_kmalloc(size, flags, 0); } EXPORT_SYMBOL(__kmalloc); #endif @@ -3995,7 +3933,7 @@ void kmem_cache_free(struct kmem_cache *cachep, void *objp) debug_check_no_locks_freed(objp, cachep->object_size); if (!(cachep->flags & SLAB_DEBUG_OBJECTS)) debug_check_no_obj_freed(objp, cachep->object_size); - __cache_free(cachep, objp, __builtin_return_address(0)); + __cache_free(cachep, objp, _RET_IP_); local_irq_restore(flags); trace_kmem_cache_free(_RET_IP_, objp); @@ -4026,7 +3964,7 @@ void kfree(const void *objp) debug_check_no_locks_freed(objp, c->object_size); debug_check_no_obj_freed(objp, c->object_size); - __cache_free(c, (void *)objp, __builtin_return_address(0)); + __cache_free(c, (void *)objp, _RET_IP_); local_irq_restore(flags); } EXPORT_SYMBOL(kfree); |