1 /* SPDX-License-Identifier: GPL-2.0 */
5 #include <linux/debugfs.h>
6 #include <linux/kobject.h>
14 unsigned long base_pfn;
16 unsigned long *bitmap;
17 unsigned int order_per_bit; /* Order of pages represented by one bit */
19 #ifdef CONFIG_CMA_DEBUGFS
20 struct hlist_head mem_head;
21 spinlock_t mem_head_lock;
22 struct debugfs_u32_array dfs_bitmap;
24 char name[CMA_MAX_NAME];
25 #ifdef CONFIG_CMA_SYSFS
26 /* the number of CMA page successful allocations */
27 atomic64_t nr_pages_succeeded;
28 /* the number of CMA page allocation failures */
29 atomic64_t nr_pages_failed;
30 /* kobject requires dynamic object */
31 struct cma_kobject *cma_kobj;
33 bool reserve_pages_on_error;
36 extern struct cma cma_areas[MAX_CMA_AREAS];
37 extern unsigned cma_area_count;
39 static inline unsigned long cma_bitmap_maxno(struct cma *cma)
41 return cma->count >> cma->order_per_bit;
44 #ifdef CONFIG_CMA_SYSFS
45 void cma_sysfs_account_success_pages(struct cma *cma, unsigned long nr_pages);
46 void cma_sysfs_account_fail_pages(struct cma *cma, unsigned long nr_pages);
48 static inline void cma_sysfs_account_success_pages(struct cma *cma,
49 unsigned long nr_pages) {};
50 static inline void cma_sysfs_account_fail_pages(struct cma *cma,
51 unsigned long nr_pages) {};