Eric Lee / smarc-fsl-linux-kernel

Blame view

include/linux/page_idle.h 2.12 KB
edit raw normal view history
33c3fc71c   Vladimir Davydov   mm: introduce idl... 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
 
  #ifndef _LINUX_MM_PAGE_IDLE_H
  #define _LINUX_MM_PAGE_IDLE_H
  
  #include <linux/bitops.h>
  #include <linux/page-flags.h>
  #include <linux/page_ext.h>
  
  #ifdef CONFIG_IDLE_PAGE_TRACKING
  
  #ifdef CONFIG_64BIT
  static inline bool page_is_young(struct page *page)
  {
  	return PageYoung(page);
  }
  
  static inline void set_page_young(struct page *page)
  {
  	SetPageYoung(page);
  }
  
  static inline bool test_and_clear_page_young(struct page *page)
  {
  	return TestClearPageYoung(page);
  }
  
  static inline bool page_is_idle(struct page *page)
  {
  	return PageIdle(page);
  }
  
  static inline void set_page_idle(struct page *page)
  {
  	SetPageIdle(page);
  }
  
  static inline void clear_page_idle(struct page *page)
  {
  	ClearPageIdle(page);
  }
  #else /* !CONFIG_64BIT */
  /*
   * If there is not enough space to store Idle and Young bits in page flags, use
   * page ext flags instead.
   */
  extern struct page_ext_operations page_idle_ops;
  
  static inline bool page_is_young(struct page *page)
  {
  	return test_bit(PAGE_EXT_YOUNG, &lookup_page_ext(page)->flags);
  }
  
  static inline void set_page_young(struct page *page)
  {
  	set_bit(PAGE_EXT_YOUNG, &lookup_page_ext(page)->flags);
  }
  
  static inline bool test_and_clear_page_young(struct page *page)
  {
  	return test_and_clear_bit(PAGE_EXT_YOUNG,
  				  &lookup_page_ext(page)->flags);
  }
  
  static inline bool page_is_idle(struct page *page)
  {
  	return test_bit(PAGE_EXT_IDLE, &lookup_page_ext(page)->flags);
  }
  
  static inline void set_page_idle(struct page *page)
  {
  	set_bit(PAGE_EXT_IDLE, &lookup_page_ext(page)->flags);
  }
  
  static inline void clear_page_idle(struct page *page)
  {
  	clear_bit(PAGE_EXT_IDLE, &lookup_page_ext(page)->flags);
  }
  #endif /* CONFIG_64BIT */
  
  #else /* !CONFIG_IDLE_PAGE_TRACKING */
  
  static inline bool page_is_young(struct page *page)
  {
  	return false;
  }
  
  static inline void set_page_young(struct page *page)
  {
  }
  
  static inline bool test_and_clear_page_young(struct page *page)
  {
  	return false;
  }
  
  static inline bool page_is_idle(struct page *page)
  {
  	return false;
  }
  
  static inline void set_page_idle(struct page *page)
  {
  }
  
  static inline void clear_page_idle(struct page *page)
  {
  }
  
  #endif /* CONFIG_IDLE_PAGE_TRACKING */
  
  #endif /* _LINUX_MM_PAGE_IDLE_H */