1 files changed, 79 insertions, 0 deletions
diff --git a/kernel/include/linux/slab_def.h b/kernel/include/linux/slab_def.h
new file mode 100644
index 000000000..33d049066
--- /dev/null
+++ b/kernel/include/linux/slab_def.h
@@ -0,0 +1,79 @@
+#ifndef _LINUX_SLAB_DEF_H
+#define	_LINUX_SLAB_DEF_H
+
+#include <linux/reciprocal_div.h>
+
+/*
+ * Definitions unique to the original Linux SLAB allocator.
+ */
+
+struct kmem_cache {
+	struct array_cache __percpu *cpu_cache;
+
+/* 1) Cache tunables. Protected by slab_mutex */
+	unsigned int batchcount;
+	unsigned int limit;
+	unsigned int shared;
+
+	unsigned int size;
+	struct reciprocal_value reciprocal_buffer_size;
+/* 2) touched by every alloc & free from the backend */
+
+	unsigned int flags;		/* constant flags */
+	unsigned int num;		/* # of objs per slab */
+
+/* 3) cache_grow/shrink */
+	/* order of pgs per slab (2^n) */
+	unsigned int gfporder;
+
+	/* force GFP flags, e.g. GFP_DMA */
+	gfp_t allocflags;
+
+	size_t colour;			/* cache colouring range */
+	unsigned int colour_off;	/* colour offset */
+	struct kmem_cache *freelist_cache;
+	unsigned int freelist_size;
+
+	/* constructor func */
+	void (*ctor)(void *obj);
+
+/* 4) cache creation/removal */
+	const char *name;
+	struct list_head list;
+	int refcount;
+	int object_size;
+	int align;
+
+/* 5) 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. 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;
+#endif /* CONFIG_DEBUG_SLAB */
+#ifdef CONFIG_MEMCG_KMEM
+	struct memcg_cache_params memcg_params;
+#endif
+
+	struct kmem_cache_node *node[MAX_NUMNODES];
+};
+
+#endif	/* _LINUX_SLAB_DEF_H */