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gerrit-public.fairphone.software / kernel / msm-4.9 / 4e462112e98f9ad6dd62e160f8b14c7df5fed2fc / . / include / linux / page_owner.h
blob: 46f1b939948c58df206e8c8740ba08bcd5f7f114 [file] [log] [blame]
Joonsoo Kim48c96a32014-12-12 16:56:01 -0800[diff] [blame]1#ifndef __LINUX_PAGE_OWNER_H
2#define __LINUX_PAGE_OWNER_H
3
Vlastimil Babka7dd80b82016-03-15 14:56:12 -0700[diff] [blame]4#include <linux/jump_label.h>
5
Joonsoo Kim48c96a32014-12-12 16:56:01 -0800[diff] [blame]6#ifdef CONFIG_PAGE_OWNER
Vlastimil Babka7dd80b82016-03-15 14:56:12 -0700[diff] [blame]7extern struct static_key_false page_owner_inited;
Joonsoo Kim48c96a32014-12-12 16:56:01 -0800[diff] [blame]8extern struct page_ext_operations page_owner_ops;
9
10extern void __reset_page_owner(struct page *page, unsigned int order);
11extern void __set_page_owner(struct page *page,
12 unsigned int order, gfp_t gfp_mask);
Joonsoo Kime2cfc912015-07-17 16:24:18 -0700[diff] [blame]13extern gfp_t __get_page_owner_gfp(struct page *page);
Vlastimil Babkad435edc2016-03-15 14:56:15 -0700[diff] [blame]14extern void __copy_page_owner(struct page *oldpage, struct page *newpage);
Vlastimil Babka7cd12b42016-03-15 14:56:18 -0700[diff] [blame]15extern void __set_page_owner_migrate_reason(struct page *page, int reason);
Vlastimil Babka4e462112016-03-15 14:56:21 -0700[diff] [blame^]16extern void __dump_page_owner(struct page *page);
Joonsoo Kim48c96a32014-12-12 16:56:01 -0800[diff] [blame]17
18static inline void reset_page_owner(struct page *page, unsigned int order)
19{
Vlastimil Babka7dd80b82016-03-15 14:56:12 -0700[diff] [blame]20 if (static_branch_unlikely(&page_owner_inited))
21 __reset_page_owner(page, order);
Joonsoo Kim48c96a32014-12-12 16:56:01 -0800[diff] [blame]22}
23
24static inline void set_page_owner(struct page *page,
25 unsigned int order, gfp_t gfp_mask)
26{
Vlastimil Babka7dd80b82016-03-15 14:56:12 -0700[diff] [blame]27 if (static_branch_unlikely(&page_owner_inited))
28 __set_page_owner(page, order, gfp_mask);
Joonsoo Kim48c96a32014-12-12 16:56:01 -0800[diff] [blame]29}
Joonsoo Kime2cfc912015-07-17 16:24:18 -0700[diff] [blame]30
31static inline gfp_t get_page_owner_gfp(struct page *page)
32{
Vlastimil Babka7dd80b82016-03-15 14:56:12 -0700[diff] [blame]33 if (static_branch_unlikely(&page_owner_inited))
34 return __get_page_owner_gfp(page);
35 else
Joonsoo Kime2cfc912015-07-17 16:24:18 -0700[diff] [blame]36 return 0;
Joonsoo Kime2cfc912015-07-17 16:24:18 -0700[diff] [blame]37}
Vlastimil Babkad435edc2016-03-15 14:56:15 -0700[diff] [blame]38static inline void copy_page_owner(struct page *oldpage, struct page *newpage)
39{
40 if (static_branch_unlikely(&page_owner_inited))
41 __copy_page_owner(oldpage, newpage);
42}
Vlastimil Babka7cd12b42016-03-15 14:56:18 -0700[diff] [blame]43static inline void set_page_owner_migrate_reason(struct page *page, int reason)
44{
45 if (static_branch_unlikely(&page_owner_inited))
46 __set_page_owner_migrate_reason(page, reason);
47}
Vlastimil Babka4e462112016-03-15 14:56:21 -0700[diff] [blame^]48static inline void dump_page_owner(struct page *page)
49{
50 if (static_branch_unlikely(&page_owner_inited))
51 __dump_page_owner(page);
52}
Joonsoo Kim48c96a32014-12-12 16:56:01 -0800[diff] [blame]53#else
54static inline void reset_page_owner(struct page *page, unsigned int order)
55{
56}
57static inline void set_page_owner(struct page *page,
58 unsigned int order, gfp_t gfp_mask)
59{
60}
Joonsoo Kime2cfc912015-07-17 16:24:18 -0700[diff] [blame]61static inline gfp_t get_page_owner_gfp(struct page *page)
62{
63 return 0;
64}
Vlastimil Babkad435edc2016-03-15 14:56:15 -0700[diff] [blame]65static inline void copy_page_owner(struct page *oldpage, struct page *newpage)
66{
67}
Vlastimil Babka7cd12b42016-03-15 14:56:18 -0700[diff] [blame]68static inline void set_page_owner_migrate_reason(struct page *page, int reason)
69{
70}
Vlastimil Babka4e462112016-03-15 14:56:21 -0700[diff] [blame^]71static inline void dump_page_owner(struct page *page)
72{
73}
Joonsoo Kim48c96a32014-12-12 16:56:01 -0800[diff] [blame]74#endif /* CONFIG_PAGE_OWNER */
75#endif /* __LINUX_PAGE_OWNER_H */