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gerrit-public.fairphone.software / kernel / msm-4.9 / 7dd80b8af0bcd705a9ef2fa272c082882616a499 / . / include / linux / page_owner.h
blob: 8e2eb153c7b9284ecddd77e40b8566e0a798705d [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);
Joonsoo Kim48c96a32014-12-12 16:56:01 -0800[diff] [blame]14
15static inline void reset_page_owner(struct page *page, unsigned int order)
16{
Vlastimil Babka7dd80b82016-03-15 14:56:12 -0700[diff] [blame^]17 if (static_branch_unlikely(&page_owner_inited))
18 __reset_page_owner(page, order);
Joonsoo Kim48c96a32014-12-12 16:56:01 -0800[diff] [blame]19}
20
21static inline void set_page_owner(struct page *page,
22 unsigned int order, gfp_t gfp_mask)
23{
Vlastimil Babka7dd80b82016-03-15 14:56:12 -0700[diff] [blame^]24 if (static_branch_unlikely(&page_owner_inited))
25 __set_page_owner(page, order, gfp_mask);
Joonsoo Kim48c96a32014-12-12 16:56:01 -0800[diff] [blame]26}
Joonsoo Kime2cfc912015-07-17 16:24:18 -0700[diff] [blame]27
28static inline gfp_t get_page_owner_gfp(struct page *page)
29{
Vlastimil Babka7dd80b82016-03-15 14:56:12 -0700[diff] [blame^]30 if (static_branch_unlikely(&page_owner_inited))
31 return __get_page_owner_gfp(page);
32 else
Joonsoo Kime2cfc912015-07-17 16:24:18 -0700[diff] [blame]33 return 0;
Joonsoo Kime2cfc912015-07-17 16:24:18 -0700[diff] [blame]34}
Joonsoo Kim48c96a32014-12-12 16:56:01 -0800[diff] [blame]35#else
36static inline void reset_page_owner(struct page *page, unsigned int order)
37{
38}
39static inline void set_page_owner(struct page *page,
40 unsigned int order, gfp_t gfp_mask)
41{
42}
Joonsoo Kime2cfc912015-07-17 16:24:18 -0700[diff] [blame]43static inline gfp_t get_page_owner_gfp(struct page *page)
44{
45 return 0;
46}
Joonsoo Kim48c96a32014-12-12 16:56:01 -0800[diff] [blame]47
48#endif /* CONFIG_PAGE_OWNER */
49#endif /* __LINUX_PAGE_OWNER_H */