kernel-ark/include/linux/mempool.h
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00

38 lines
1.2 KiB
C

/*
* memory buffer pool support
*/
#ifndef _LINUX_MEMPOOL_H
#define _LINUX_MEMPOOL_H
#include <linux/wait.h>
typedef void * (mempool_alloc_t)(unsigned int __nocast gfp_mask, void *pool_data);
typedef void (mempool_free_t)(void *element, void *pool_data);
typedef struct mempool_s {
spinlock_t lock;
int min_nr; /* nr of elements at *elements */
int curr_nr; /* Current nr of elements at *elements */
void **elements;
void *pool_data;
mempool_alloc_t *alloc;
mempool_free_t *free;
wait_queue_head_t wait;
} mempool_t;
extern mempool_t * mempool_create(int min_nr, mempool_alloc_t *alloc_fn,
mempool_free_t *free_fn, void *pool_data);
extern int mempool_resize(mempool_t *pool, int new_min_nr, unsigned int __nocast gfp_mask);
extern void mempool_destroy(mempool_t *pool);
extern void * mempool_alloc(mempool_t *pool, unsigned int __nocast gfp_mask);
extern void mempool_free(void *element, mempool_t *pool);
/*
* A mempool_alloc_t and mempool_free_t that get the memory from
* a slab that is passed in through pool_data.
*/
void *mempool_alloc_slab(unsigned int __nocast gfp_mask, void *pool_data);
void mempool_free_slab(void *element, void *pool_data);
#endif /* _LINUX_MEMPOOL_H */