1 #ifndef __LINUX_PAGE_OWNER_H 2 #define __LINUX_PAGE_OWNER_H 3 4 #include <linux/jump_label.h> 5 6 #ifdef CONFIG_PAGE_OWNER 7 extern struct static_key_false page_owner_inited; 8 extern struct page_ext_operations page_owner_ops; 9 10 extern void __reset_page_owner(struct page *page, unsigned int order); 11 extern void __set_page_owner(struct page *page, 12 unsigned int order, gfp_t gfp_mask); 13 extern void __split_page_owner(struct page *page, unsigned int order); 14 extern void __copy_page_owner(struct page *oldpage, struct page *newpage); 15 extern void __set_page_owner_migrate_reason(struct page *page, int reason); 16 extern void __dump_page_owner(struct page *page); 17 18 static inline void reset_page_owner(struct page *page, unsigned int order) 19 { 20 if (static_branch_unlikely(&page_owner_inited)) 21 __reset_page_owner(page, order); 22 } 23 24 static inline void set_page_owner(struct page *page, 25 unsigned int order, gfp_t gfp_mask) 26 { 27 if (static_branch_unlikely(&page_owner_inited)) 28 __set_page_owner(page, order, gfp_mask); 29 } 30 31 static inline void split_page_owner(struct page *page, unsigned int order) 32 { 33 if (static_branch_unlikely(&page_owner_inited)) 34 __split_page_owner(page, order); 35 } 36 static inline void copy_page_owner(struct page *oldpage, struct page *newpage) 37 { 38 if (static_branch_unlikely(&page_owner_inited)) 39 __copy_page_owner(oldpage, newpage); 40 } 41 static inline void set_page_owner_migrate_reason(struct page *page, int reason) 42 { 43 if (static_branch_unlikely(&page_owner_inited)) 44 __set_page_owner_migrate_reason(page, reason); 45 } 46 static inline void dump_page_owner(struct page *page) 47 { 48 if (static_branch_unlikely(&page_owner_inited)) 49 __dump_page_owner(page); 50 } 51 #else 52 static inline void reset_page_owner(struct page *page, unsigned int order) 53 { 54 } 55 static inline void set_page_owner(struct page *page, 56 unsigned int order, gfp_t gfp_mask) 57 { 58 } 59 static inline void split_page_owner(struct page *page, 60 unsigned int order) 61 { 62 } 63 static inline void copy_page_owner(struct page *oldpage, struct page *newpage) 64 { 65 } 66 static inline void set_page_owner_migrate_reason(struct page *page, int reason) 67 { 68 } 69 static inline void dump_page_owner(struct page *page) 70 { 71 } 72 #endif /* CONFIG_PAGE_OWNER */ 73 #endif /* __LINUX_PAGE_OWNER_H */ 74