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 #include <linux/stackdepot.h>
7
8 #ifdef CONFIG_PAGE_OWNER
9 extern struct static_key_false page_owner_inited;
10 extern struct page_ext_operations page_owner_ops;
11
12 extern depot_stack_handle_t get_page_owner_handle(struct page_ext *page_ext,
13 unsigned long pfn);
14 extern void __reset_page_owner(struct page *page, unsigned short order);
15 extern void __set_page_owner(struct page *page,
16 unsigned short order, gfp_t gfp_mask);
17 extern void __split_page_owner(struct page *page, int old_order,
18 int new_order);
19 extern void __folio_copy_owner(struct folio *newfolio, struct folio *old);
20 extern void __set_page_owner_migrate_reason(struct page *page, int reason);
21 extern void __dump_page_owner(const struct page *page);
22 extern void pagetypeinfo_showmixedcount_print(struct seq_file *m,
23 pg_data_t *pgdat, struct zone *zone);
24
reset_page_owner(struct page * page,unsigned short order)25 static inline void reset_page_owner(struct page *page, unsigned short order)
26 {
27 if (static_branch_unlikely(&page_owner_inited))
28 __reset_page_owner(page, order);
29 }
30
set_page_owner(struct page * page,unsigned short order,gfp_t gfp_mask)31 static inline void set_page_owner(struct page *page,
32 unsigned short order, gfp_t gfp_mask)
33 {
34 if (static_branch_unlikely(&page_owner_inited))
35 __set_page_owner(page, order, gfp_mask);
36 }
37
split_page_owner(struct page * page,int old_order,int new_order)38 static inline void split_page_owner(struct page *page, int old_order,
39 int new_order)
40 {
41 if (static_branch_unlikely(&page_owner_inited))
42 __split_page_owner(page, old_order, new_order);
43 }
folio_copy_owner(struct folio * newfolio,struct folio * old)44 static inline void folio_copy_owner(struct folio *newfolio, struct folio *old)
45 {
46 if (static_branch_unlikely(&page_owner_inited))
47 __folio_copy_owner(newfolio, old);
48 }
set_page_owner_migrate_reason(struct page * page,int reason)49 static inline void set_page_owner_migrate_reason(struct page *page, int reason)
50 {
51 if (static_branch_unlikely(&page_owner_inited))
52 __set_page_owner_migrate_reason(page, reason);
53 }
dump_page_owner(const struct page * page)54 static inline void dump_page_owner(const struct page *page)
55 {
56 if (static_branch_unlikely(&page_owner_inited))
57 __dump_page_owner(page);
58 }
59 #else
reset_page_owner(struct page * page,unsigned short order)60 static inline void reset_page_owner(struct page *page, unsigned short order)
61 {
62 }
set_page_owner(struct page * page,unsigned short order,gfp_t gfp_mask)63 static inline void set_page_owner(struct page *page,
64 unsigned short order, gfp_t gfp_mask)
65 {
66 }
split_page_owner(struct page * page,int old_order,int new_order)67 static inline void split_page_owner(struct page *page, int old_order,
68 int new_order)
69 {
70 }
folio_copy_owner(struct folio * newfolio,struct folio * folio)71 static inline void folio_copy_owner(struct folio *newfolio, struct folio *folio)
72 {
73 }
set_page_owner_migrate_reason(struct page * page,int reason)74 static inline void set_page_owner_migrate_reason(struct page *page, int reason)
75 {
76 }
dump_page_owner(const struct page * page)77 static inline void dump_page_owner(const struct page *page)
78 {
79 }
80 #endif /* CONFIG_PAGE_OWNER */
81 #endif /* __LINUX_PAGE_OWNER_H */
82