X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=include%2Flinux%2Fslub_def.h;h=d117ea2825a9187b44e37a12602b5538ec175839;hb=2fceef397f9880b212a74c418290ce69e7ac00eb;hp=79d59c937fac4ca62d0ca98c0b3249d1842d78c1;hpb=30bc94566e396b432b72e2f3518e19225dc2672d;p=linux-2.6

diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h
index 79d59c937f..d117ea2825 100644
--- a/include/linux/slub_def.h
+++ b/include/linux/slub_def.h
@@ -4,7 +4,7 @@
 /*
  * SLUB : A Slab allocator without object queues.
  *
- * (C) 2007 SGI, Christoph Lameter <clameter@sgi.com>
+ * (C) 2007 SGI, Christoph Lameter
  */
 #include <linux/types.h>
 #include <linux/gfp.h>
@@ -29,6 +29,7 @@ enum stat_item {
 	DEACTIVATE_TO_HEAD,	/* Cpu slab was moved to the head of partials */
 	DEACTIVATE_TO_TAIL,	/* Cpu slab was moved to the tail of partials */
 	DEACTIVATE_REMOTE_FREES,/* Slab contained remotely freed objects */
+	ORDER_FALLBACK,		/* Number of times fallback was necessary */
 	NR_SLUB_STAT_ITEMS };
 
 struct kmem_cache_cpu {
@@ -48,10 +49,20 @@ struct kmem_cache_node {
 	struct list_head partial;
 #ifdef CONFIG_SLUB_DEBUG
 	atomic_long_t nr_slabs;
+	atomic_long_t total_objects;
 	struct list_head full;
 #endif
 };
 
+/*
+ * Word size structure that can be atomically updated or read and that
+ * contains both the order and the number of objects that a slab of the
+ * given order would contain.
+ */
+struct kmem_cache_order_objects {
+	unsigned long x;
+};
+
 /*
  * Slab cache management.
  */
@@ -61,7 +72,7 @@ struct kmem_cache {
 	int size;		/* The size of an object including meta data */
 	int objsize;		/* The size of an object without meta data */
 	int offset;		/* Free pointer offset. */
-	int order;		/* Current preferred allocation order */
+	struct kmem_cache_order_objects oo;
 
 	/*
 	 * Avoid an extra cache line for UP, SMP and for the node local to
@@ -70,7 +81,8 @@ struct kmem_cache {
 	struct kmem_cache_node local_node;
 
 	/* Allocation and freeing of slabs */
-	int objects;		/* Number of objects in slab */
+	struct kmem_cache_order_objects max;
+	struct kmem_cache_order_objects min;
 	gfp_t allocflags;	/* gfp flags to use on each alloc */
 	int refcount;		/* Refcount for slab cache destroy */
 	void (*ctor)(struct kmem_cache *, void *);
@@ -125,10 +137,12 @@ static __always_inline int kmalloc_index(size_t size)
 	if (size <= KMALLOC_MIN_SIZE)
 		return KMALLOC_SHIFT_LOW;
 
+#if KMALLOC_MIN_SIZE <= 64
 	if (size > 64 && size <= 96)
 		return 1;
 	if (size > 128 && size <= 192)
 		return 2;
+#endif
 	if (size <=          8) return 3;
 	if (size <=         16) return 4;
 	if (size <=         32) return 5;