1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __LINUX_PAGE_OWNER_H
3 #define __LINUX_PAGE_OWNER_H
4
5 #include <linux/jump_label.h>
6
7 #ifdef CONFIG_PAGE_OWNER
8 extern struct static_key_false page_owner_inited;
9 extern struct page_ext_operations page_owner_ops;
10
11 extern void __reset_page_owner(struct page *page, unsigned short order);
12 extern void __set_page_owner(struct page *page,
13 unsigned short order, gfp_t gfp_mask);
14 extern void __split_page_owner(struct page *page, unsigned int nr);
15 extern void __folio_copy_owner(struct folio *newfolio, struct folio *old);
16 extern void __set_page_owner_migrate_reason(struct page *page, int reason);
17 extern void __dump_page_owner(const struct page *page);
18 extern void pagetypeinfo_showmixedcount_print(struct seq_file *m,
19 pg_data_t *pgdat, struct zone *zone);
20
reset_page_owner(struct page * page,unsigned short order)21 static inline void reset_page_owner(struct page *page, unsigned short order)
22 {
23 if (static_branch_unlikely(&page_owner_inited))
24 __reset_page_owner(page, order);
25 }
26
set_page_owner(struct page * page,unsigned short order,gfp_t gfp_mask)27 static inline void set_page_owner(struct page *page,
28 unsigned short order, gfp_t gfp_mask)
29 {
30 if (static_branch_unlikely(&page_owner_inited))
31 __set_page_owner(page, order, gfp_mask);
32 }
33
split_page_owner(struct page * page,unsigned int nr)34 static inline void split_page_owner(struct page *page, unsigned int nr)
35 {
36 if (static_branch_unlikely(&page_owner_inited))
37 __split_page_owner(page, nr);
38 }
folio_copy_owner(struct folio * newfolio,struct folio * old)39 static inline void folio_copy_owner(struct folio *newfolio, struct folio *old)
40 {
41 if (static_branch_unlikely(&page_owner_inited))
42 __folio_copy_owner(newfolio, old);
43 }
set_page_owner_migrate_reason(struct page * page,int reason)44 static inline void set_page_owner_migrate_reason(struct page *page, int reason)
45 {
46 if (static_branch_unlikely(&page_owner_inited))
47 __set_page_owner_migrate_reason(page, reason);
48 }
dump_page_owner(const struct page * page)49 static inline void dump_page_owner(const struct page *page)
50 {
51 if (static_branch_unlikely(&page_owner_inited))
52 __dump_page_owner(page);
53 }
54 #else
reset_page_owner(struct page * page,unsigned short order)55 static inline void reset_page_owner(struct page *page, unsigned short order)
56 {
57 }
set_page_owner(struct page * page,unsigned int order,gfp_t gfp_mask)58 static inline void set_page_owner(struct page *page,
59 unsigned int order, gfp_t gfp_mask)
60 {
61 }
split_page_owner(struct page * page,unsigned short order)62 static inline void split_page_owner(struct page *page,
63 unsigned short order)
64 {
65 }
folio_copy_owner(struct folio * newfolio,struct folio * folio)66 static inline void folio_copy_owner(struct folio *newfolio, struct folio *folio)
67 {
68 }
set_page_owner_migrate_reason(struct page * page,int reason)69 static inline void set_page_owner_migrate_reason(struct page *page, int reason)
70 {
71 }
dump_page_owner(const struct page * page)72 static inline void dump_page_owner(const struct page *page)
73 {
74 }
75 #endif /* CONFIG_PAGE_OWNER */
76 #endif /* __LINUX_PAGE_OWNER_H */
77