page_owner.h 2.4 KB

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  1. /* SPDX-License-Identifier: GPL-2.0 */
  2. #ifndef __LINUX_PAGE_OWNER_H
  3. #define __LINUX_PAGE_OWNER_H
  4. #include <linux/jump_label.h>
  5. #ifdef CONFIG_PAGE_OWNER
  6. extern struct static_key_false page_owner_inited;
  7. extern struct page_ext_operations page_owner_ops;
  8. extern depot_stack_handle_t get_page_owner_handle(struct page_ext *page_ext,
  9. unsigned long pfn);
  10. extern void __reset_page_owner(struct page *page, unsigned short order);
  11. extern void __set_page_owner(struct page *page,
  12. unsigned short order, gfp_t gfp_mask);
  13. extern void __split_page_owner(struct page *page, unsigned int nr);
  14. extern void __folio_copy_owner(struct folio *newfolio, struct folio *old);
  15. extern void __set_page_owner_migrate_reason(struct page *page, int reason);
  16. extern void __dump_page_owner(const struct page *page);
  17. extern void pagetypeinfo_showmixedcount_print(struct seq_file *m,
  18. pg_data_t *pgdat, struct zone *zone);
  19. static inline void reset_page_owner(struct page *page, unsigned short order)
  20. {
  21. if (static_branch_unlikely(&page_owner_inited))
  22. __reset_page_owner(page, order);
  23. }
  24. static inline void set_page_owner(struct page *page,
  25. unsigned short order, gfp_t gfp_mask)
  26. {
  27. if (static_branch_unlikely(&page_owner_inited))
  28. __set_page_owner(page, order, gfp_mask);
  29. }
  30. static inline void split_page_owner(struct page *page, unsigned int nr)
  31. {
  32. if (static_branch_unlikely(&page_owner_inited))
  33. __split_page_owner(page, nr);
  34. }
  35. static inline void folio_copy_owner(struct folio *newfolio, struct folio *old)
  36. {
  37. if (static_branch_unlikely(&page_owner_inited))
  38. __folio_copy_owner(newfolio, old);
  39. }
  40. static inline void set_page_owner_migrate_reason(struct page *page, int reason)
  41. {
  42. if (static_branch_unlikely(&page_owner_inited))
  43. __set_page_owner_migrate_reason(page, reason);
  44. }
  45. static inline void dump_page_owner(const struct page *page)
  46. {
  47. if (static_branch_unlikely(&page_owner_inited))
  48. __dump_page_owner(page);
  49. }
  50. #else
  51. static inline void reset_page_owner(struct page *page, unsigned short order)
  52. {
  53. }
  54. static inline void set_page_owner(struct page *page,
  55. unsigned int order, gfp_t gfp_mask)
  56. {
  57. }
  58. static inline void split_page_owner(struct page *page,
  59. unsigned short order)
  60. {
  61. }
  62. static inline void folio_copy_owner(struct folio *newfolio, struct folio *folio)
  63. {
  64. }
  65. static inline void set_page_owner_migrate_reason(struct page *page, int reason)
  66. {
  67. }
  68. static inline void dump_page_owner(const struct page *page)
  69. {
  70. }
  71. #endif /* CONFIG_PAGE_OWNER */
  72. #endif /* __LINUX_PAGE_OWNER_H */