X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=include%2Flinux%2Fslab_def.h;h=850d057500dece3f52497b2bed3aab51dd677852;hb=cd65c3c7d1081290b7365897c2290a84aa967d4d;hp=455f9affea9abafe24c6be97a861d1839ee770a0;hpb=36994e58a48fb8f9651c7dc845a6de298aba5bfc;p=safe%2Fjmp%2Flinux-2.6

diff --git a/include/linux/slab_def.h b/include/linux/slab_def.h
index 455f9af..850d057 100644
--- a/include/linux/slab_def.h
+++ b/include/linux/slab_def.h
@@ -14,7 +14,88 @@
 #include <asm/page.h>		/* kmalloc_sizes.h needs PAGE_SIZE */
 #include <asm/cache.h>		/* kmalloc_sizes.h needs L1_CACHE_BYTES */
 #include <linux/compiler.h>
-#include <trace/kmemtrace.h>
+#include <linux/kmemtrace.h>
+
+/*
+ * struct kmem_cache
+ *
+ * manages a cache.
+ */
+
+struct kmem_cache {
+/* 1) per-cpu data, touched during every alloc/free */
+	struct array_cache *array[NR_CPUS];
+/* 2) Cache tunables. Protected by cache_chain_mutex */
+	unsigned int batchcount;
+	unsigned int limit;
+	unsigned int shared;
+
+	unsigned int buffer_size;
+	u32 reciprocal_buffer_size;
+/* 3) touched by every alloc & free from the backend */
+
+	unsigned int flags;		/* constant flags */
+	unsigned int num;		/* # of objs per slab */
+
+/* 4) cache_grow/shrink */
+	/* order of pgs per slab (2^n) */
+	unsigned int gfporder;
+
+	/* force GFP flags, e.g. GFP_DMA */
+	gfp_t gfpflags;
+
+	size_t colour;			/* cache colouring range */
+	unsigned int colour_off;	/* colour offset */
+	struct kmem_cache *slabp_cache;
+	unsigned int slab_size;
+	unsigned int dflags;		/* dynamic flags */
+
+	/* constructor func */
+	void (*ctor)(void *obj);
+
+/* 5) cache creation/removal */
+	const char *name;
+	struct list_head next;
+
+/* 6) statistics */
+#ifdef CONFIG_DEBUG_SLAB
+	unsigned long num_active;
+	unsigned long num_allocations;
+	unsigned long high_mark;
+	unsigned long grown;
+	unsigned long reaped;
+	unsigned long errors;
+	unsigned long max_freeable;
+	unsigned long node_allocs;
+	unsigned long node_frees;
+	unsigned long node_overflow;
+	atomic_t allochit;
+	atomic_t allocmiss;
+	atomic_t freehit;
+	atomic_t freemiss;
+
+	/*
+	 * If debugging is enabled, then the allocator can add additional
+	 * fields and/or padding to every object. buffer_size contains the total
+	 * object size including these internal fields, the following two
+	 * variables contain the offset to the user object and its size.
+	 */
+	int obj_offset;
+	int obj_size;
+#endif /* CONFIG_DEBUG_SLAB */
+
+	/*
+	 * We put nodelists[] at the end of kmem_cache, because we want to size
+	 * this array to nr_node_ids slots instead of MAX_NUMNODES
+	 * (see kmem_cache_init())
+	 * We still use [MAX_NUMNODES] and not [1] or [0] because cache_cache
+	 * is statically defined, so we reserve the max number of nodes.
+	 */
+	struct kmem_list3 *nodelists[MAX_NUMNODES];
+	/*
+	 * Do not add fields after nodelists[]
+	 */
+};
 
 /* Size description struct for general caches. */
 struct cache_sizes {
@@ -62,10 +143,7 @@ static __always_inline void *kmalloc(size_t size, gfp_t flags)
 			i++;
 #include <linux/kmalloc_sizes.h>
 #undef CACHE
-		{
-			extern void __you_cannot_kmalloc_that_much(void);
-			__you_cannot_kmalloc_that_much();
-		}
+		return NULL;
 found:
 #ifdef CONFIG_ZONE_DMA
 		if (flags & GFP_DMA)
@@ -76,8 +154,8 @@ found:
 
 		ret = kmem_cache_alloc_notrace(cachep, flags);
 
-		kmemtrace_mark_alloc(KMEMTRACE_TYPE_KMALLOC, _THIS_IP_, ret,
-				     size, slab_buffer_size(cachep), flags);
+		trace_kmalloc(_THIS_IP_, ret,
+			      size, slab_buffer_size(cachep), flags);
 
 		return ret;
 	}
@@ -120,10 +198,7 @@ static __always_inline void *kmalloc_node(size_t size, gfp_t flags, int node)
 			i++;
 #include <linux/kmalloc_sizes.h>
 #undef CACHE
-		{
-			extern void __you_cannot_kmalloc_that_much(void);
-			__you_cannot_kmalloc_that_much();
-		}
+		return NULL;
 found:
 #ifdef CONFIG_ZONE_DMA
 		if (flags & GFP_DMA)
@@ -134,9 +209,9 @@ found:
 
 		ret = kmem_cache_alloc_node_notrace(cachep, flags, node);
 
-		kmemtrace_mark_alloc_node(KMEMTRACE_TYPE_KMALLOC, _THIS_IP_,
-					  ret, size, slab_buffer_size(cachep),
-					  flags, node);
+		trace_kmalloc_node(_THIS_IP_, ret,
+				   size, slab_buffer_size(cachep),
+				   flags, node);
 
 		return ret;
 	}