[mirror_ubuntu-zesty-kernel.git] / mm / 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
Commit	Line	Data
28b24c1f SL	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;
26b02a1f SL	10	#ifdef CONFIG_CMA_DEBUGFS
	11	struct hlist_head mem_head;
	12	spinlock_t mem_head_lock;
	13	#endif
28b24c1f SL	14	};
	15
	16	extern struct cma cma_areas[MAX_CMA_AREAS];
	17	extern unsigned cma_area_count;
	18
f21838e0	19	static inline unsigned long cma_bitmap_maxno(struct cma *cma)
28b24c1f SL	20	{
	21	return cma->count >> cma->order_per_bit;
	22	}
	23
	24	#endif