include/linux/page_owner.h

   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 */