/* SPDX-License-Identifier: GPL-2.0 */ #ifndef __MM_CMA_H__ #define __MM_CMA_H__ #include <linux/debugfs.h> #define CMA_MAX_NAME 64 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; struct debugfs_u32_array dfs_bitmap; #endif char name[CMA_MAX_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