swh:1:snp:c2847dfd741eae21606027cf29250d1ebcd63fb4
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Tip revision: afd2ff9b7e1b367172f18ba7f693dfb62bdcb2dc authored by Linus Torvalds on 10 January 2016, 23:01:32 UTC
Linux 4.4
Tip revision: afd2ff9
cma.h
#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
};

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
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