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authorLinus Torvalds <torvalds@linux-foundation.org>2012-10-07 07:53:13 +0900
committerLinus Torvalds <torvalds@linux-foundation.org>2012-10-07 07:53:13 +0900
commit125b79d74a63552be757bb49a425b965782e4952 (patch)
tree978a30e588c070914b679c50ad7ae34d0aff67bc /mm/slab.c
parentf1c6872e4980bc4078cfaead05f892b3d78dea64 (diff)
parente2087be35a8ed101c1e748ef688c889419c69829 (diff)
downloadlinux-linaro-stable-125b79d74a63552be757bb49a425b965782e4952.tar.gz
Merge branch 'slab/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux
Pull SLAB changes from Pekka Enberg: "New and noteworthy: * More SLAB allocator unification patches from Christoph Lameter and others. This paves the way for slab memcg patches that hopefully will land in v3.8. * SLAB tracing improvements from Ezequiel Garcia. * Kernel tainting upon SLAB corruption from Dave Jones. * Miscellanous SLAB allocator bug fixes and improvements from various people." * 'slab/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux: (43 commits) slab: Fix build failure in __kmem_cache_create() slub: init_kmem_cache_cpus() and put_cpu_partial() can be static mm/slab: Fix kmem_cache_alloc_node_trace() declaration Revert "mm/slab: Fix kmem_cache_alloc_node_trace() declaration" mm, slob: fix build breakage in __kmalloc_node_track_caller mm/slab: Fix kmem_cache_alloc_node_trace() declaration mm/slab: Fix typo _RET_IP -> _RET_IP_ mm, slub: Rename slab_alloc() -> slab_alloc_node() to match SLAB mm, slab: Rename __cache_alloc() -> slab_alloc() mm, slab: Match SLAB and SLUB kmem_cache_alloc_xxx_trace() prototype mm, slab: Replace 'caller' type, void* -> unsigned long mm, slob: Add support for kmalloc_track_caller() mm, slab: Remove silly function slab_buffer_size() mm, slob: Use NUMA_NO_NODE instead of -1 mm, sl[au]b: Taint kernel when we detect a corrupted slab slab: Only define slab_error for DEBUG slab: fix the DEADLOCK issue on l3 alien lock slub: Zero initial memory segment for kmem_cache and kmem_cache_node Revert "mm/sl[aou]b: Move sysfs_slab_add to common" mm/sl[aou]b: Move kmem_cache refcounting to common code ...
Diffstat (limited to 'mm/slab.c')
-rw-r--r--mm/slab.c348
1 files changed, 143 insertions, 205 deletions
diff --git a/mm/slab.c b/mm/slab.c
index 11339110271e..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
@@ -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);