| Sasha Levin | 28b24c1 | 2015-04-14 15:44:57 -0700 | [diff] [blame] | 1 | #ifndef __MM_CMA_H__ |
| 2 | #define __MM_CMA_H__ |
| 3 | |
| 4 | struct cma { |
| 5 | unsigned long base_pfn; |
| 6 | unsigned long count; |
| 7 | unsigned long *bitmap; |
| 8 | unsigned int order_per_bit; /* Order of pages represented by one bit */ |
| 9 | struct mutex lock; |
| Sasha Levin | 26b02a1 | 2015-04-14 15:44:59 -0700 | [diff] [blame] | 10 | #ifdef CONFIG_CMA_DEBUGFS |
| 11 | struct hlist_head mem_head; |
| 12 | spinlock_t mem_head_lock; |
| 13 | #endif |
| Sasha Levin | 28b24c1 | 2015-04-14 15:44:57 -0700 | [diff] [blame] | 14 | }; |
| 15 | |
| 16 | extern struct cma cma_areas[MAX_CMA_AREAS]; |
| 17 | extern unsigned cma_area_count; |
| 18 | |
| 19 | static unsigned long cma_bitmap_maxno(struct cma *cma) |
| 20 | { |
| 21 | return cma->count >> cma->order_per_bit; |
| 22 | } |
| 23 | |
| 24 | #endif |