linux-imx

/* 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