1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */
2*4882a593Smuzhiyun #ifndef __LINUX_PAGE_PINNER_H
3*4882a593Smuzhiyun #define __LINUX_PAGE_PINNER_H
4*4882a593Smuzhiyun
5*4882a593Smuzhiyun #include <linux/jump_label.h>
6*4882a593Smuzhiyun
7*4882a593Smuzhiyun #ifdef CONFIG_PAGE_PINNER
8*4882a593Smuzhiyun extern struct static_key_false page_pinner_inited;
9*4882a593Smuzhiyun extern struct static_key_true failure_tracking;
10*4882a593Smuzhiyun extern struct page_ext_operations page_pinner_ops;
11*4882a593Smuzhiyun
12*4882a593Smuzhiyun extern void __reset_page_pinner(struct page *page, unsigned int order, bool free);
13*4882a593Smuzhiyun extern void __set_page_pinner(struct page *page, unsigned int order);
14*4882a593Smuzhiyun extern void __dump_page_pinner(struct page *page);
15*4882a593Smuzhiyun void __page_pinner_migration_failed(struct page *page);
16*4882a593Smuzhiyun void __page_pinner_mark_migration_failed_pages(struct list_head *page_list);
17*4882a593Smuzhiyun
reset_page_pinner(struct page * page,unsigned int order)18*4882a593Smuzhiyun static inline void reset_page_pinner(struct page *page, unsigned int order)
19*4882a593Smuzhiyun {
20*4882a593Smuzhiyun if (static_branch_unlikely(&page_pinner_inited))
21*4882a593Smuzhiyun __reset_page_pinner(page, order, false);
22*4882a593Smuzhiyun }
23*4882a593Smuzhiyun
free_page_pinner(struct page * page,unsigned int order)24*4882a593Smuzhiyun static inline void free_page_pinner(struct page *page, unsigned int order)
25*4882a593Smuzhiyun {
26*4882a593Smuzhiyun if (static_branch_unlikely(&page_pinner_inited))
27*4882a593Smuzhiyun __reset_page_pinner(page, order, true);
28*4882a593Smuzhiyun }
29*4882a593Smuzhiyun
set_page_pinner(struct page * page,unsigned int order)30*4882a593Smuzhiyun static inline void set_page_pinner(struct page *page, unsigned int order)
31*4882a593Smuzhiyun {
32*4882a593Smuzhiyun if (static_branch_unlikely(&page_pinner_inited))
33*4882a593Smuzhiyun __set_page_pinner(page, order);
34*4882a593Smuzhiyun }
35*4882a593Smuzhiyun
dump_page_pinner(struct page * page)36*4882a593Smuzhiyun static inline void dump_page_pinner(struct page *page)
37*4882a593Smuzhiyun {
38*4882a593Smuzhiyun if (static_branch_unlikely(&page_pinner_inited))
39*4882a593Smuzhiyun __dump_page_pinner(page);
40*4882a593Smuzhiyun }
41*4882a593Smuzhiyun
page_pinner_put_page(struct page * page)42*4882a593Smuzhiyun static inline void page_pinner_put_page(struct page *page)
43*4882a593Smuzhiyun {
44*4882a593Smuzhiyun if (!static_branch_unlikely(&failure_tracking))
45*4882a593Smuzhiyun return;
46*4882a593Smuzhiyun
47*4882a593Smuzhiyun __page_pinner_migration_failed(page);
48*4882a593Smuzhiyun }
49*4882a593Smuzhiyun
page_pinner_failure_detect(struct page * page)50*4882a593Smuzhiyun static inline void page_pinner_failure_detect(struct page *page)
51*4882a593Smuzhiyun {
52*4882a593Smuzhiyun if (!static_branch_unlikely(&failure_tracking))
53*4882a593Smuzhiyun return;
54*4882a593Smuzhiyun
55*4882a593Smuzhiyun __page_pinner_migration_failed(page);
56*4882a593Smuzhiyun }
57*4882a593Smuzhiyun
page_pinner_mark_migration_failed_pages(struct list_head * page_list)58*4882a593Smuzhiyun static inline void page_pinner_mark_migration_failed_pages(struct list_head *page_list)
59*4882a593Smuzhiyun {
60*4882a593Smuzhiyun if (!static_branch_unlikely(&failure_tracking))
61*4882a593Smuzhiyun return;
62*4882a593Smuzhiyun
63*4882a593Smuzhiyun __page_pinner_mark_migration_failed_pages(page_list);
64*4882a593Smuzhiyun }
65*4882a593Smuzhiyun #else
reset_page_pinner(struct page * page,unsigned int order)66*4882a593Smuzhiyun static inline void reset_page_pinner(struct page *page, unsigned int order)
67*4882a593Smuzhiyun {
68*4882a593Smuzhiyun }
free_page_pinner(struct page * page,unsigned int order)69*4882a593Smuzhiyun static inline void free_page_pinner(struct page *page, unsigned int order)
70*4882a593Smuzhiyun {
71*4882a593Smuzhiyun }
set_page_pinner(struct page * page,unsigned int order)72*4882a593Smuzhiyun static inline void set_page_pinner(struct page *page, unsigned int order)
73*4882a593Smuzhiyun {
74*4882a593Smuzhiyun }
dump_page_pinner(struct page * page)75*4882a593Smuzhiyun static inline void dump_page_pinner(struct page *page)
76*4882a593Smuzhiyun {
77*4882a593Smuzhiyun }
page_pinner_put_page(struct page * page)78*4882a593Smuzhiyun static inline void page_pinner_put_page(struct page *page)
79*4882a593Smuzhiyun {
80*4882a593Smuzhiyun }
page_pinner_failure_detect(struct page * page)81*4882a593Smuzhiyun static inline void page_pinner_failure_detect(struct page *page)
82*4882a593Smuzhiyun {
83*4882a593Smuzhiyun }
page_pinner_mark_migration_failed_pages(struct list_head * page_list)84*4882a593Smuzhiyun static inline void page_pinner_mark_migration_failed_pages(struct list_head *page_list)
85*4882a593Smuzhiyun {
86*4882a593Smuzhiyun }
87*4882a593Smuzhiyun #endif /* CONFIG_PAGE_PINNER */
88*4882a593Smuzhiyun #endif /* __LINUX_PAGE_PINNER_H */
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