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NTB: Change WARN_ON_ONCE to pr_warn_once on unsafe
[mirror_ubuntu-artful-kernel.git] / mm / cma.h
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1#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;
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10#ifdef CONFIG_CMA_DEBUGFS
11 struct hlist_head mem_head;
12 spinlock_t mem_head_lock;
13#endif
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14};
15
16extern struct cma cma_areas[MAX_CMA_AREAS];
17extern unsigned cma_area_count;
18
19static unsigned long cma_bitmap_maxno(struct cma *cma)
20{
21 return cma->count >> cma->order_per_bit;
22}
23
24#endif