1 #ifndef _LINUX_SLAB_DEF_H
2 #define _LINUX_SLAB_DEF_H
4 #include <linux/reciprocal_div.h>
7 * Definitions unique to the original Linux SLAB allocator.
11 struct array_cache __percpu
*cpu_cache
;
13 /* 1) Cache tunables. Protected by slab_mutex */
14 unsigned int batchcount
;
19 struct reciprocal_value reciprocal_buffer_size
;
20 /* 2) touched by every alloc & free from the backend */
22 unsigned int flags
; /* constant flags */
23 unsigned int num
; /* # of objs per slab */
25 /* 3) cache_grow/shrink */
26 /* order of pgs per slab (2^n) */
27 unsigned int gfporder
;
29 /* force GFP flags, e.g. GFP_DMA */
32 size_t colour
; /* cache colouring range */
33 unsigned int colour_off
; /* colour offset */
34 struct kmem_cache
*freelist_cache
;
35 unsigned int freelist_size
;
37 /* constructor func */
38 void (*ctor
)(void *obj
);
40 /* 4) cache creation/removal */
42 struct list_head list
;
48 #ifdef CONFIG_DEBUG_SLAB
49 unsigned long num_active
;
50 unsigned long num_allocations
;
51 unsigned long high_mark
;
55 unsigned long max_freeable
;
56 unsigned long node_allocs
;
57 unsigned long node_frees
;
58 unsigned long node_overflow
;
65 * If debugging is enabled, then the allocator can add additional
66 * fields and/or padding to every object. size contains the total
67 * object size including these internal fields, the following two
68 * variables contain the offset to the user object and its size.
71 #endif /* CONFIG_DEBUG_SLAB */
74 struct memcg_cache_params memcg_params
;
77 struct kmem_cache_node
*node
[MAX_NUMNODES
];
80 #endif /* _LINUX_SLAB_DEF_H */