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| author |   Kent Overstreet <kent.overstreet@gmail.com> | 2015-05-04 16:52:20 -0700 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2018-05-14 13:14:23 -0600 |
| commit | c1a67fefd0546a5552289c65fe31b1d60e64b643 (patch) | |
| tree | e96bfb877d770c45e4b7a58d251edf3808ae5d32 /include/linux/mempool.h | |
| parent | sbitmap: fix race in wait batch accounting (diff) | |
| download | linux-dev-c1a67fefd0546a5552289c65fe31b1d60e64b643.tar.xz linux-dev-c1a67fefd0546a5552289c65fe31b1d60e64b643.zip | |
mempool: Add mempool_init()/mempool_exit()
Allows mempools to be embedded in other structs, getting rid of a
pointer indirection from allocation fastpaths.
mempool_exit() is safe to call on an uninitialized but zeroed mempool.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/linux/mempool.h')
| -rw-r--r-- | include/linux/mempool.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/include/linux/mempool.h b/include/linux/mempool.h index b51f5c430c26..0c964ac107c2 100644 --- a/include/linux/mempool.h +++ b/include/linux/mempool.h @@ -25,6 +25,18 @@ typedef struct mempool_s { wait_queue_head_t wait; } mempool_t; +static inline bool mempool_initialized(mempool_t *pool) +{ + return pool->elements != NULL; +} + +void mempool_exit(mempool_t *pool); +int mempool_init_node(mempool_t *pool, int min_nr, mempool_alloc_t *alloc_fn, + mempool_free_t *free_fn, void *pool_data, + gfp_t gfp_mask, int node_id); +int mempool_init(mempool_t *pool, int min_nr, mempool_alloc_t *alloc_fn, + mempool_free_t *free_fn, void *pool_data); + extern mempool_t *mempool_create(int min_nr, mempool_alloc_t *alloc_fn, mempool_free_t *free_fn, void *pool_data); extern mempool_t *mempool_create_node(int min_nr, mempool_alloc_t *alloc_fn, @@ -43,6 +55,14 @@ extern void mempool_free(void *element, mempool_t *pool); */ void *mempool_alloc_slab(gfp_t gfp_mask, void *pool_data); void mempool_free_slab(void *element, void *pool_data); + +static inline int +mempool_init_slab_pool(mempool_t *pool, int min_nr, struct kmem_cache *kc) +{ + return mempool_init(pool, min_nr, mempool_alloc_slab, + mempool_free_slab, (void *) kc); +} + static inline mempool_t * mempool_create_slab_pool(int min_nr, struct kmem_cache *kc) { @@ -56,6 +76,13 @@ mempool_create_slab_pool(int min_nr, struct kmem_cache *kc) */ void *mempool_kmalloc(gfp_t gfp_mask, void *pool_data); void mempool_kfree(void *element, void *pool_data); + +static inline int mempool_init_kmalloc_pool(mempool_t *pool, int min_nr, size_t size) +{ + return mempool_init(pool, min_nr, mempool_kmalloc, + mempool_kfree, (void *) size); +} + static inline mempool_t *mempool_create_kmalloc_pool(int min_nr, size_t size) { return mempool_create(min_nr, mempool_kmalloc, mempool_kfree, @@ -68,6 +95,13 @@ static inline mempool_t *mempool_create_kmalloc_pool(int min_nr, size_t size) */ void *mempool_alloc_pages(gfp_t gfp_mask, void *pool_data); void mempool_free_pages(void *element, void *pool_data); + +static inline int mempool_init_page_pool(mempool_t *pool, int min_nr, int order) +{ + return mempool_init(pool, min_nr, mempool_alloc_pages, + mempool_free_pages, (void *)(long)order); +} + static inline mempool_t *mempool_create_page_pool(int min_nr, int order) { return mempool_create(min_nr, mempool_alloc_pages, mempool_free_pages, |