diff options
-rw-r--r-- | lib/genalloc.c | 43 |
1 files changed, 23 insertions, 20 deletions
diff --git a/lib/genalloc.c b/lib/genalloc.c index 7d16ecabba96..75ae68ce03e1 100644 --- a/lib/genalloc.c +++ b/lib/genalloc.c | |||
@@ -14,11 +14,13 @@ | |||
14 | #include <linux/genalloc.h> | 14 | #include <linux/genalloc.h> |
15 | 15 | ||
16 | 16 | ||
17 | /* | 17 | /** |
18 | * Create a new special memory pool. | 18 | * gen_pool_create - create a new special memory pool |
19 | * | ||
20 | * @min_alloc_order: log base 2 of number of bytes each bitmap bit represents | 19 | * @min_alloc_order: log base 2 of number of bytes each bitmap bit represents |
21 | * @nid: node id of the node the pool structure should be allocated on, or -1 | 20 | * @nid: node id of the node the pool structure should be allocated on, or -1 |
21 | * | ||
22 | * Create a new special memory pool that can be used to manage special purpose | ||
23 | * memory not managed by the regular kmalloc/kfree interface. | ||
22 | */ | 24 | */ |
23 | struct gen_pool *gen_pool_create(int min_alloc_order, int nid) | 25 | struct gen_pool *gen_pool_create(int min_alloc_order, int nid) |
24 | { | 26 | { |
@@ -34,15 +36,15 @@ struct gen_pool *gen_pool_create(int min_alloc_order, int nid) | |||
34 | } | 36 | } |
35 | EXPORT_SYMBOL(gen_pool_create); | 37 | EXPORT_SYMBOL(gen_pool_create); |
36 | 38 | ||
37 | 39 | /** | |
38 | /* | 40 | * gen_pool_add - add a new chunk of special memory to the pool |
39 | * Add a new chunk of memory to the specified pool. | ||
40 | * | ||
41 | * @pool: pool to add new memory chunk to | 41 | * @pool: pool to add new memory chunk to |
42 | * @addr: starting address of memory chunk to add to pool | 42 | * @addr: starting address of memory chunk to add to pool |
43 | * @size: size in bytes of the memory chunk to add to pool | 43 | * @size: size in bytes of the memory chunk to add to pool |
44 | * @nid: node id of the node the chunk structure and bitmap should be | 44 | * @nid: node id of the node the chunk structure and bitmap should be |
45 | * allocated on, or -1 | 45 | * allocated on, or -1 |
46 | * | ||
47 | * Add a new chunk of special memory to the specified pool. | ||
46 | */ | 48 | */ |
47 | int gen_pool_add(struct gen_pool *pool, unsigned long addr, size_t size, | 49 | int gen_pool_add(struct gen_pool *pool, unsigned long addr, size_t size, |
48 | int nid) | 50 | int nid) |
@@ -69,11 +71,12 @@ int gen_pool_add(struct gen_pool *pool, unsigned long addr, size_t size, | |||
69 | } | 71 | } |
70 | EXPORT_SYMBOL(gen_pool_add); | 72 | EXPORT_SYMBOL(gen_pool_add); |
71 | 73 | ||
72 | 74 | /** | |
73 | /* | 75 | * gen_pool_destroy - destroy a special memory pool |
74 | * Destroy a memory pool. Verifies that there are no outstanding allocations. | ||
75 | * | ||
76 | * @pool: pool to destroy | 76 | * @pool: pool to destroy |
77 | * | ||
78 | * Destroy the specified special memory pool. Verifies that there are no | ||
79 | * outstanding allocations. | ||
77 | */ | 80 | */ |
78 | void gen_pool_destroy(struct gen_pool *pool) | 81 | void gen_pool_destroy(struct gen_pool *pool) |
79 | { | 82 | { |
@@ -99,13 +102,13 @@ void gen_pool_destroy(struct gen_pool *pool) | |||
99 | } | 102 | } |
100 | EXPORT_SYMBOL(gen_pool_destroy); | 103 | EXPORT_SYMBOL(gen_pool_destroy); |
101 | 104 | ||
102 | 105 | /** | |
103 | /* | 106 | * gen_pool_alloc - allocate special memory from the pool |
104 | * Allocate the requested number of bytes from the specified pool. | ||
105 | * Uses a first-fit algorithm. | ||
106 | * | ||
107 | * @pool: pool to allocate from | 107 | * @pool: pool to allocate from |
108 | * @size: number of bytes to allocate from the pool | 108 | * @size: number of bytes to allocate from the pool |
109 | * | ||
110 | * Allocate the requested number of bytes from the specified pool. | ||
111 | * Uses a first-fit algorithm. | ||
109 | */ | 112 | */ |
110 | unsigned long gen_pool_alloc(struct gen_pool *pool, size_t size) | 113 | unsigned long gen_pool_alloc(struct gen_pool *pool, size_t size) |
111 | { | 114 | { |
@@ -157,13 +160,13 @@ unsigned long gen_pool_alloc(struct gen_pool *pool, size_t size) | |||
157 | } | 160 | } |
158 | EXPORT_SYMBOL(gen_pool_alloc); | 161 | EXPORT_SYMBOL(gen_pool_alloc); |
159 | 162 | ||
160 | 163 | /** | |
161 | /* | 164 | * gen_pool_free - free allocated special memory back to the pool |
162 | * Free the specified memory back to the specified pool. | ||
163 | * | ||
164 | * @pool: pool to free to | 165 | * @pool: pool to free to |
165 | * @addr: starting address of memory to free back to pool | 166 | * @addr: starting address of memory to free back to pool |
166 | * @size: size in bytes of memory to free | 167 | * @size: size in bytes of memory to free |
168 | * | ||
169 | * Free previously allocated special memory back to the specified pool. | ||
167 | */ | 170 | */ |
168 | void gen_pool_free(struct gen_pool *pool, unsigned long addr, size_t size) | 171 | void gen_pool_free(struct gen_pool *pool, unsigned long addr, size_t size) |
169 | { | 172 | { |