[mirror_ubuntu-bionic-kernel.git] / mm / cma.h

/* SPDX-License-Identifier: GPL-2.0 */
#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	/* SPDX-License-Identifier: GPL-2.0 */
	2	#ifndef __MM_CMA_H__
	3	#define __MM_CMA_H__
	4
	5	struct cma {
	6	unsigned long base_pfn;
	7	unsigned long count;
	8	unsigned long *bitmap;
	9	unsigned int order_per_bit; /* Order of pages represented by one bit */
	10	struct mutex lock;
	11	#ifdef CONFIG_CMA_DEBUGFS
	12	struct hlist_head mem_head;
	13	spinlock_t mem_head_lock;
	14	#endif
	15	const char *name;
	16	};
	17
	18	extern struct cma cma_areas[MAX_CMA_AREAS];
	19	extern unsigned cma_area_count;
	20
	21	static inline unsigned long cma_bitmap_maxno(struct cma *cma)
	22	{
	23	return cma->count >> cma->order_per_bit;
	24	}
	25
	26	#endif