2 * memory buffer pool support
4 #ifndef _LINUX_MEMPOOL_H
5 #define _LINUX_MEMPOOL_H
7 #include <linux/wait.h>
9 typedef void * (mempool_alloc_t)(unsigned int __nocast gfp_mask, void *pool_data);
10 typedef void (mempool_free_t)(void *element, void *pool_data);
12 typedef struct mempool_s {
14 int min_nr; /* nr of elements at *elements */
15 int curr_nr; /* Current nr of elements at *elements */
19 mempool_alloc_t *alloc;
21 wait_queue_head_t wait;
23 extern mempool_t * mempool_create(int min_nr, mempool_alloc_t *alloc_fn,
24 mempool_free_t *free_fn, void *pool_data);
25 extern int mempool_resize(mempool_t *pool, int new_min_nr, unsigned int __nocast gfp_mask);
26 extern void mempool_destroy(mempool_t *pool);
27 extern void * mempool_alloc(mempool_t *pool, unsigned int __nocast gfp_mask);
28 extern void mempool_free(void *element, mempool_t *pool);
31 * A mempool_alloc_t and mempool_free_t that get the memory from
32 * a slab that is passed in through pool_data.
34 void *mempool_alloc_slab(unsigned int __nocast gfp_mask, void *pool_data);
35 void mempool_free_slab(void *element, void *pool_data);
37 #endif /* _LINUX_MEMPOOL_H */