1da177e4c3
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!
38 lines
1.2 KiB
C
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 */
|