2 * Basic general purpose allocator for managing special purpose memory
3 * not managed by the regular kmalloc/kfree interface.
4 * Uses for this includes on-device special memory, uncached memory
7 * This source code is licensed under the GNU General Public License,
8 * Version 2. See the file COPYING for more details.
13 * General purpose special memory pool descriptor.
17 struct list_head chunks
; /* list of chunks in this pool */
18 int min_alloc_order
; /* minimum allocation order */
22 * General purpose special memory pool chunk descriptor.
24 struct gen_pool_chunk
{
26 struct list_head next_chunk
; /* next chunk in pool */
27 unsigned long start_addr
; /* starting address of memory chunk */
28 unsigned long end_addr
; /* ending address of memory chunk */
29 unsigned long bits
[0]; /* bitmap for allocating memory chunk */
32 extern struct gen_pool
*gen_pool_create(int, int);
33 extern int gen_pool_add(struct gen_pool
*, unsigned long, size_t, int);
34 extern void gen_pool_destroy(struct gen_pool
*);
35 extern unsigned long gen_pool_alloc(struct gen_pool
*, size_t);
36 extern void gen_pool_free(struct gen_pool
*, unsigned long, size_t);
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