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- #ifndef __MM_CMA_H__
- #define __MM_CMA_H__
- #include <linux/debugfs.h>
- #include <linux/kobject.h>
- struct cma_kobject {
- struct kobject kobj;
- struct cma *cma;
- };
- struct cma {
- unsigned long base_pfn;
- unsigned long count;
- unsigned long *bitmap;
- unsigned int order_per_bit;
- spinlock_t 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];
- #ifdef CONFIG_CMA_SYSFS
-
- atomic64_t nr_pages_succeeded;
-
- atomic64_t nr_pages_failed;
-
- struct cma_kobject *cma_kobj;
- #endif
- bool reserve_pages_on_error;
- };
- 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;
- }
- #ifdef CONFIG_CMA_SYSFS
- void cma_sysfs_account_success_pages(struct cma *cma, unsigned long nr_pages);
- void cma_sysfs_account_fail_pages(struct cma *cma, unsigned long nr_pages);
- #else
- static inline void cma_sysfs_account_success_pages(struct cma *cma,
- unsigned long nr_pages) {};
- static inline void cma_sysfs_account_fail_pages(struct cma *cma,
- unsigned long nr_pages) {};
- #endif
- #endif
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