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Sasha Levin28b24c12015-04-14 15:44:57 -07001#ifndef __MM_CMA_H__
2#define __MM_CMA_H__
3
4struct 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 Levin26b02a12015-04-14 15:44:59 -070010#ifdef CONFIG_CMA_DEBUGFS
11 struct hlist_head mem_head;
12 spinlock_t mem_head_lock;
13#endif
Laura Abbottf318dd02017-04-18 11:27:03 -070014 const char *name;
Sasha Levin28b24c12015-04-14 15:44:57 -070015};
16
17extern struct cma cma_areas[MAX_CMA_AREAS];
18extern unsigned cma_area_count;
19
Gregory Fongf21838e2015-08-14 15:35:21 -070020static inline unsigned long cma_bitmap_maxno(struct cma *cma)
Sasha Levin28b24c12015-04-14 15:44:57 -070021{
22 return cma->count >> cma->order_per_bit;
23}
24
25#endif