[mirror_ubuntu-artful-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
	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
Commit	Line	Data
	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;
	10	#ifdef CONFIG_CMA_DEBUGFS
	11	struct hlist_head mem_head;
	12	spinlock_t mem_head_lock;
	13	#endif
	14	const char *name;
	15	};
	16
	17	extern struct cma cma_areas[MAX_CMA_AREAS];
	18	extern unsigned cma_area_count;
	19
	20	static inline unsigned long cma_bitmap_maxno(struct cma *cma)
	21	{
	22	return cma->count >> cma->order_per_bit;
	23	}
	24
	25	#endif