netfilter: ctnetlink: add zone support

[safe/jmp/linux-2.6] / include / linux / slab.h

diff --git a/include/linux/slab.h b/include/linux/slab.h
index 9aa90a6..2da8372 100644 (file)
--- a/include/linux/slab.h
+++ b/include/linux/slab.h
@@ -23,6 +23,34 @@
 #define SLAB_CACHE_DMA         0x00004000UL    /* Use GFP_DMA memory */
 #define SLAB_STORE_USER                0x00010000UL    /* DEBUG: Store the last owner for bug hunting */
 #define SLAB_PANIC             0x00040000UL    /* Panic if kmem_cache_create() fails */
+/*
+ * SLAB_DESTROY_BY_RCU - **WARNING** READ THIS!
+ *
+ * This delays freeing the SLAB page by a grace period, it does _NOT_
+ * delay object freeing. This means that if you do kmem_cache_free()
+ * that memory location is free to be reused at any time. Thus it may
+ * be possible to see another object there in the same RCU grace period.
+ *
+ * This feature only ensures the memory location backing the object
+ * stays valid, the trick to using this is relying on an independent
+ * object validation pass. Something like:
+ *
+ *  rcu_read_lock()
+ * again:
+ *  obj = lockless_lookup(key);
+ *  if (obj) {
+ *    if (!try_get_ref(obj)) // might fail for free objects
+ *      goto again;
+ *
+ *    if (obj->key != key) { // not the object we expected
+ *      put_ref(obj);
+ *      goto again;
+ *    }
+ *  }
+ *  rcu_read_unlock();
+ *
+ * See also the comment on struct slab_rcu in mm/slab.c.
+ */
 #define SLAB_DESTROY_BY_RCU    0x00080000UL    /* Defer freeing slabs to RCU */
 #define SLAB_MEM_SPREAD                0x00100000UL    /* Spread some memory over cpuset */
 #define SLAB_TRACE             0x00200000UL    /* Trace allocations and frees */
@@ -34,6 +62,15 @@
 # define SLAB_DEBUG_OBJECTS    0x00000000UL
 #endif
 
+#define SLAB_NOLEAKTRACE       0x00800000UL    /* Avoid kmemleak tracing */
+
+/* Don't track use of uninitialized memory */
+#ifdef CONFIG_KMEMCHECK
+# define SLAB_NOTRACK          0x01000000UL
+#else
+# define SLAB_NOTRACK          0x00000000UL
+#endif
+
 /* The following flags affect the page allocator grouping pages by mobility */
 #define SLAB_RECLAIM_ACCOUNT   0x00020000UL            /* Objects are reclaimable */
 #define SLAB_TEMPORARY         SLAB_RECLAIM_ACCOUNT    /* Objects are short-lived */
@@ -58,7 +95,7 @@ int slab_is_available(void);
 
 struct kmem_cache *kmem_cache_create(const char *, size_t, size_t,
                        unsigned long,
-                       void (*)(struct kmem_cache *, void *));
+                       void (*)(void *));
 void kmem_cache_destroy(struct kmem_cache *);
 int kmem_cache_shrink(struct kmem_cache *);
 void kmem_cache_free(struct kmem_cache *, void *);
@@ -96,8 +133,10 @@ int kmem_ptr_validate(struct kmem_cache *cachep, const void *ptr);
 /*
  * Common kmalloc functions provided by all allocators
  */
+void * __must_check __krealloc(const void *, size_t, gfp_t);
 void * __must_check krealloc(const void *, size_t, gfp_t);
 void kfree(const void *);
+void kzfree(const void *);
 size_t ksize(const void *);
 
 /*
@@ -180,7 +219,7 @@ size_t ksize(const void *);
  */
 static inline void *kcalloc(size_t n, size_t size, gfp_t flags)
 {
-       if (n != 0 && size > ULONG_MAX / n)
+       if (size != 0 && n > ULONG_MAX / size)
                return NULL;
        return __kmalloc(n * size, flags | __GFP_ZERO);
 }
@@ -224,9 +263,9 @@ static inline void *kmem_cache_alloc_node(struct kmem_cache *cachep,
  * request comes from.
  */
 #if defined(CONFIG_DEBUG_SLAB) || defined(CONFIG_SLUB)
-extern void *__kmalloc_track_caller(size_t, gfp_t, void*);
+extern void *__kmalloc_track_caller(size_t, gfp_t, unsigned long);
 #define kmalloc_track_caller(size, flags) \
-       __kmalloc_track_caller(size, flags, __builtin_return_address(0))
+       __kmalloc_track_caller(size, flags, _RET_IP_)
 #else
 #define kmalloc_track_caller(size, flags) \
        __kmalloc(size, flags)
@@ -242,10 +281,10 @@ extern void *__kmalloc_track_caller(size_t, gfp_t, void*);
  * allocation request comes from.
  */
 #if defined(CONFIG_DEBUG_SLAB) || defined(CONFIG_SLUB)
-extern void *__kmalloc_node_track_caller(size_t, gfp_t, int, void *);
+extern void *__kmalloc_node_track_caller(size_t, gfp_t, int, unsigned long);
 #define kmalloc_node_track_caller(size, flags, node) \
        __kmalloc_node_track_caller(size, flags, node, \
-                       __builtin_return_address(0))
+                       _RET_IP_)
 #else
 #define kmalloc_node_track_caller(size, flags, node) \
        __kmalloc_node(size, flags, node)
@@ -256,7 +295,7 @@ extern void *__kmalloc_node_track_caller(size_t, gfp_t, int, void *);
 #define kmalloc_node_track_caller(size, flags, node) \
        kmalloc_track_caller(size, flags)
 
-#endif /* DEBUG_SLAB */
+#endif /* CONFIG_NUMA */
 
 /*
  * Shortcuts
@@ -287,9 +326,6 @@ static inline void *kzalloc_node(size_t size, gfp_t flags, int node)
        return kmalloc_node(size, flags | __GFP_ZERO, node);
 }
 
-#ifdef CONFIG_SLABINFO
-extern const struct seq_operations slabinfo_op;
-ssize_t slabinfo_write(struct file *, const char __user *, size_t, loff_t *);
-#endif
+void __init kmem_cache_init_late(void);
 
 #endif /* _LINUX_SLAB_H */