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review.shift-gmbh.com / SHIFTPHONES / kernel / common / 8fc9f8bedf1bdaea48382ae2e3dd558e2b939cee / . / include / linux / page_owner.h
blob: 8679ccd722e8985b01ba113c0f472da7f25d1aa4 [file] [log] [blame]
Greg Kroah-Hartmanb2441312017-11-01 15:07:57 +0100[diff] [blame]1/* SPDX-License-Identifier: GPL-2.0 */
Joonsoo Kim48c96a32014-12-12 16:56:01 -0800[diff] [blame]2#ifndef __LINUX_PAGE_OWNER_H
3#define __LINUX_PAGE_OWNER_H
4
Vlastimil Babka7dd80b82016-03-15 14:56:12 -0700[diff] [blame]5#include <linux/jump_label.h>
6
Joonsoo Kim48c96a32014-12-12 16:56:01 -0800[diff] [blame]7#ifdef CONFIG_PAGE_OWNER
Vlastimil Babka7dd80b82016-03-15 14:56:12 -0700[diff] [blame]8extern struct static_key_false page_owner_inited;
Joonsoo Kim48c96a32014-12-12 16:56:01 -0800[diff] [blame]9extern struct page_ext_operations page_owner_ops;
10
11extern void __reset_page_owner(struct page *page, unsigned int order);
12extern void __set_page_owner(struct page *page,
13 unsigned int order, gfp_t gfp_mask);
Joonsoo Kima9627bc2016-07-26 15:23:49 -0700[diff] [blame]14extern void __split_page_owner(struct page *page, unsigned int order);
Vlastimil Babkad435edc2016-03-15 14:56:15 -0700[diff] [blame]15extern void __copy_page_owner(struct page *oldpage, struct page *newpage);
Vlastimil Babka7cd12b42016-03-15 14:56:18 -0700[diff] [blame]16extern void __set_page_owner_migrate_reason(struct page *page, int reason);
Vlastimil Babka4e462112016-03-15 14:56:21 -0700[diff] [blame]17extern void __dump_page_owner(struct page *page);
Joonsoo Kime2f612e2016-10-07 16:58:21 -0700[diff] [blame]18extern void pagetypeinfo_showmixedcount_print(struct seq_file *m,
19 pg_data_t *pgdat, struct zone *zone);
Joonsoo Kim48c96a32014-12-12 16:56:01 -0800[diff] [blame]20
21static inline void reset_page_owner(struct page *page, unsigned int order)
22{
Vlastimil Babka7dd80b82016-03-15 14:56:12 -0700[diff] [blame]23 if (static_branch_unlikely(&page_owner_inited))
24 __reset_page_owner(page, order);
Joonsoo Kim48c96a32014-12-12 16:56:01 -0800[diff] [blame]25}
26
27static inline void set_page_owner(struct page *page,
28 unsigned int order, gfp_t gfp_mask)
29{
Vlastimil Babka7dd80b82016-03-15 14:56:12 -0700[diff] [blame]30 if (static_branch_unlikely(&page_owner_inited))
31 __set_page_owner(page, order, gfp_mask);
Joonsoo Kim48c96a32014-12-12 16:56:01 -0800[diff] [blame]32}
Joonsoo Kime2cfc912015-07-17 16:24:18 -0700[diff] [blame]33
Joonsoo Kima9627bc2016-07-26 15:23:49 -0700[diff] [blame]34static inline void split_page_owner(struct page *page, unsigned int order)
Joonsoo Kime2cfc912015-07-17 16:24:18 -0700[diff] [blame]35{
Vlastimil Babka7dd80b82016-03-15 14:56:12 -0700[diff] [blame]36 if (static_branch_unlikely(&page_owner_inited))
Joonsoo Kima9627bc2016-07-26 15:23:49 -0700[diff] [blame]37 __split_page_owner(page, order);
Joonsoo Kime2cfc912015-07-17 16:24:18 -0700[diff] [blame]38}
Vlastimil Babkad435edc2016-03-15 14:56:15 -0700[diff] [blame]39static inline void copy_page_owner(struct page *oldpage, struct page *newpage)
40{
41 if (static_branch_unlikely(&page_owner_inited))
42 __copy_page_owner(oldpage, newpage);
43}
Vlastimil Babka7cd12b42016-03-15 14:56:18 -0700[diff] [blame]44static 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}
Vlastimil Babka4e462112016-03-15 14:56:21 -0700[diff] [blame]49static inline void dump_page_owner(struct page *page)
50{
51 if (static_branch_unlikely(&page_owner_inited))
52 __dump_page_owner(page);
53}
Joonsoo Kim48c96a32014-12-12 16:56:01 -0800[diff] [blame]54#else
55static inline void reset_page_owner(struct page *page, unsigned int order)
56{
57}
58static inline void set_page_owner(struct page *page,
59 unsigned int order, gfp_t gfp_mask)
60{
61}
Joonsoo Kima9627bc2016-07-26 15:23:49 -0700[diff] [blame]62static inline void split_page_owner(struct page *page,
63 unsigned int order)
Joonsoo Kime2cfc912015-07-17 16:24:18 -0700[diff] [blame]64{
Joonsoo Kime2cfc912015-07-17 16:24:18 -0700[diff] [blame]65}
Vlastimil Babkad435edc2016-03-15 14:56:15 -0700[diff] [blame]66static inline void copy_page_owner(struct page *oldpage, struct page *newpage)
67{
68}
Vlastimil Babka7cd12b42016-03-15 14:56:18 -0700[diff] [blame]69static inline void set_page_owner_migrate_reason(struct page *page, int reason)
70{
71}
Vlastimil Babka4e462112016-03-15 14:56:21 -0700[diff] [blame]72static inline void dump_page_owner(struct page *page)
73{
74}
Joonsoo Kim48c96a32014-12-12 16:56:01 -0800[diff] [blame]75#endif /* CONFIG_PAGE_OWNER */
76#endif /* __LINUX_PAGE_OWNER_H */