| /* SPDX-License-Identifier: GPL-2.0 */ |
| #ifndef __MM_CMA_H__ |
| #define __MM_CMA_H__ |
| |
| struct cma { |
| unsigned long base_pfn; |
| unsigned long count; |
| unsigned long *bitmap; |
| unsigned int order_per_bit; /* Order of pages represented by one bit */ |
| struct mutex lock; |
| #ifdef CONFIG_CMA_DEBUGFS |
| struct hlist_head mem_head; |
| spinlock_t mem_head_lock; |
| #endif |
| const char *name; |
| }; |
| |
| extern struct cma cma_areas[MAX_CMA_AREAS]; |
| extern unsigned cma_area_count; |
| |
| static inline unsigned long cma_bitmap_maxno(struct cma *cma) |
| { |
| return cma->count >> cma->order_per_bit; |
| } |
| |
| #endif |