2 * memory buffer pool support
4 #ifndef _LINUX_MEMPOOL_H
5 #define _LINUX_MEMPOOL_H
7 #include <linux/wait.h>
11 typedef void * (mempool_alloc_t
)(gfp_t gfp_mask
, void *pool_data
);
12 typedef void (mempool_free_t
)(void *element
, void *pool_data
);
14 typedef struct mempool_s
{
16 int min_nr
; /* nr of elements at *elements */
17 int curr_nr
; /* Current nr of elements at *elements */
21 mempool_alloc_t
*alloc
;
23 wait_queue_head_t wait
;
26 extern mempool_t
*mempool_create(int min_nr
, mempool_alloc_t
*alloc_fn
,
27 mempool_free_t
*free_fn
, void *pool_data
);
28 extern mempool_t
*mempool_create_node(int min_nr
, mempool_alloc_t
*alloc_fn
,
29 mempool_free_t
*free_fn
, void *pool_data
, int nid
);
31 extern int mempool_resize(mempool_t
*pool
, int new_min_nr
, gfp_t gfp_mask
);
32 extern void mempool_destroy(mempool_t
*pool
);
33 extern void * mempool_alloc(mempool_t
*pool
, gfp_t gfp_mask
);
34 extern void mempool_free(void *element
, mempool_t
*pool
);
37 * A mempool_alloc_t and mempool_free_t that get the memory from
38 * a slab that is passed in through pool_data.
40 void *mempool_alloc_slab(gfp_t gfp_mask
, void *pool_data
);
41 void mempool_free_slab(void *element
, void *pool_data
);
42 static inline mempool_t
*
43 mempool_create_slab_pool(int min_nr
, struct kmem_cache
*kc
)
45 return mempool_create(min_nr
, mempool_alloc_slab
, mempool_free_slab
,
50 * a mempool_alloc_t and a mempool_free_t to kmalloc and kfree the
51 * amount of memory specified by pool_data
53 void *mempool_kmalloc(gfp_t gfp_mask
, void *pool_data
);
54 void mempool_kfree(void *element
, void *pool_data
);
55 static inline mempool_t
*mempool_create_kmalloc_pool(int min_nr
, size_t size
)
57 return mempool_create(min_nr
, mempool_kmalloc
, mempool_kfree
,
62 * A mempool_alloc_t and mempool_free_t for a simple page allocator that
63 * allocates pages of the order specified by pool_data
65 void *mempool_alloc_pages(gfp_t gfp_mask
, void *pool_data
);
66 void mempool_free_pages(void *element
, void *pool_data
);
67 static inline mempool_t
*mempool_create_page_pool(int min_nr
, int order
)
69 return mempool_create(min_nr
, mempool_alloc_pages
, mempool_free_pages
,
73 #endif /* _LINUX_MEMPOOL_H */
This page took 0.033095 seconds and 5 git commands to generate.