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authorLinus Torvalds <torvalds@linux-foundation.org>2010-03-05 14:35:40 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2010-03-05 14:35:40 -0800
commit64096c17417380d8a472d096645f4cbc9406c987 (patch)
treee01d22012de7694206143b5606f7d51f225eb249 /include/linux/slub_def.h
parentcc7889ff5ee7a1c1a2b5073c53db5ad9b76f14e2 (diff)
parent1154fab73ccbab010cfaa272b6987c624cfd63c6 (diff)
Merge branch 'slab-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6
* 'slab-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6: SLUB: Fix per-cpu merge conflict failslab: add ability to filter slab caches slab: fix regression in touched logic dma kmalloc handling fixes slub: remove impossible condition slab: initialize unused alien cache entry as NULL at alloc_alien_cache(). SLUB: Make slub statistics use this_cpu_inc SLUB: this_cpu: Remove slub kmem_cache fields SLUB: Get rid of dynamic DMA kmalloc cache allocation SLUB: Use this_cpu operations in slub
Diffstat (limited to 'include/linux/slub_def.h')
-rw-r--r--include/linux/slub_def.h27
1 files changed, 12 insertions, 15 deletions
diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h
index 1e14beb23f9..0249d4175ba 100644
--- a/include/linux/slub_def.h
+++ b/include/linux/slub_def.h
@@ -38,8 +38,6 @@ struct kmem_cache_cpu {
void **freelist; /* Pointer to first free per cpu object */
struct page *page; /* The slab from which we are allocating */
int node; /* The node of the page (or -1 for debug) */
- unsigned int offset; /* Freepointer offset (in word units) */
- unsigned int objsize; /* Size of an object (from kmem_cache) */
#ifdef CONFIG_SLUB_STATS
unsigned stat[NR_SLUB_STAT_ITEMS];
#endif
@@ -69,6 +67,7 @@ struct kmem_cache_order_objects {
* Slab cache management.
*/
struct kmem_cache {
+ struct kmem_cache_cpu *cpu_slab;
/* Used for retriving partial slabs etc */
unsigned long flags;
int size; /* The size of an object including meta data */
@@ -104,11 +103,6 @@ struct kmem_cache {
int remote_node_defrag_ratio;
struct kmem_cache_node *node[MAX_NUMNODES];
#endif
-#ifdef CONFIG_SMP
- struct kmem_cache_cpu *cpu_slab[NR_CPUS];
-#else
- struct kmem_cache_cpu cpu_slab;
-#endif
};
/*
@@ -135,11 +129,21 @@ struct kmem_cache {
#define SLUB_PAGE_SHIFT (PAGE_SHIFT + 2)
+#ifdef CONFIG_ZONE_DMA
+#define SLUB_DMA __GFP_DMA
+/* Reserve extra caches for potential DMA use */
+#define KMALLOC_CACHES (2 * SLUB_PAGE_SHIFT - 6)
+#else
+/* Disable DMA functionality */
+#define SLUB_DMA (__force gfp_t)0
+#define KMALLOC_CACHES SLUB_PAGE_SHIFT
+#endif
+
/*
* We keep the general caches in an array of slab caches that are used for
* 2^x bytes of allocations.
*/
-extern struct kmem_cache kmalloc_caches[SLUB_PAGE_SHIFT];
+extern struct kmem_cache kmalloc_caches[KMALLOC_CACHES];
/*
* Sorry that the following has to be that ugly but some versions of GCC
@@ -207,13 +211,6 @@ static __always_inline struct kmem_cache *kmalloc_slab(size_t size)
return &kmalloc_caches[index];
}
-#ifdef CONFIG_ZONE_DMA
-#define SLUB_DMA __GFP_DMA
-#else
-/* Disable DMA functionality */
-#define SLUB_DMA (__force gfp_t)0
-#endif
-
void *kmem_cache_alloc(struct kmem_cache *, gfp_t);
void *__kmalloc(size_t size, gfp_t flags);