projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * memory buffer pool support | |
| 3 | */ | |
| 4 | #ifndef _LINUX_MEMPOOL_H | |
| 5 | #define _LINUX_MEMPOOL_H | |
| 6 | ||
| 7 | #include <linux/wait.h> | |
| 8 | ||
| 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); | |
| 11 | ||
| 12 | typedef struct mempool_s { | |
| 13 | spinlock_t lock; | |
| 14 | int min_nr; /* nr of elements at *elements */ | |
| 15 | int curr_nr; /* Current nr of elements at *elements */ | |
| 16 | void **elements; | |
| 17 | ||
| 18 | void *pool_data; | |
| 19 | mempool_alloc_t *alloc; | |
| 20 | mempool_free_t *free; | |
| 21 | wait_queue_head_t wait; | |
| 22 | } mempool_t; | |
| 1946089a CL |
23 | |
| 24 | extern mempool_t *mempool_create(int min_nr, mempool_alloc_t *alloc_fn, | |
| 25 | mempool_free_t *free_fn, void *pool_data); | |
| 26 | extern mempool_t *mempool_create_node(int min_nr, mempool_alloc_t *alloc_fn, | |
| 27 | mempool_free_t *free_fn, void *pool_data, int nid); | |
| 28 | ||
| 29 | extern int mempool_resize(mempool_t *pool, int new_min_nr, | |
| 30 | unsigned int __nocast gfp_mask); | |
| 1da177e4 LT |
31 | extern void mempool_destroy(mempool_t *pool); |
| 32 | extern void * mempool_alloc(mempool_t *pool, unsigned int __nocast gfp_mask); | |
| 33 | extern void mempool_free(void *element, mempool_t *pool); | |
| 34 | ||
| 35 | /* | |
| 36 | * A mempool_alloc_t and mempool_free_t that get the memory from | |
| 37 | * a slab that is passed in through pool_data. | |
| 38 | */ | |
| 39 | void *mempool_alloc_slab(unsigned int __nocast gfp_mask, void *pool_data); | |
| 40 | void mempool_free_slab(void *element, void *pool_data); | |
| 41 | ||
| 42 | #endif /* _LINUX_MEMPOOL_H */ |