Root/
1 | #ifndef _LINUX_KHUGEPAGED_H |
2 | #define _LINUX_KHUGEPAGED_H |
3 | |
4 | #include <linux/sched.h> /* MMF_VM_HUGEPAGE */ |
5 | |
6 | #ifdef CONFIG_TRANSPARENT_HUGEPAGE |
7 | extern int __khugepaged_enter(struct mm_struct *mm); |
8 | extern void __khugepaged_exit(struct mm_struct *mm); |
9 | extern int khugepaged_enter_vma_merge(struct vm_area_struct *vma); |
10 | |
11 | #define khugepaged_enabled() \ |
12 | (transparent_hugepage_flags & \ |
13 | ((1<<TRANSPARENT_HUGEPAGE_FLAG) | \ |
14 | (1<<TRANSPARENT_HUGEPAGE_REQ_MADV_FLAG))) |
15 | #define khugepaged_always() \ |
16 | (transparent_hugepage_flags & \ |
17 | (1<<TRANSPARENT_HUGEPAGE_FLAG)) |
18 | #define khugepaged_req_madv() \ |
19 | (transparent_hugepage_flags & \ |
20 | (1<<TRANSPARENT_HUGEPAGE_REQ_MADV_FLAG)) |
21 | #define khugepaged_defrag() \ |
22 | (transparent_hugepage_flags & \ |
23 | (1<<TRANSPARENT_HUGEPAGE_DEFRAG_KHUGEPAGED_FLAG)) |
24 | |
25 | static inline int khugepaged_fork(struct mm_struct *mm, struct mm_struct *oldmm) |
26 | { |
27 | if (test_bit(MMF_VM_HUGEPAGE, &oldmm->flags)) |
28 | return __khugepaged_enter(mm); |
29 | return 0; |
30 | } |
31 | |
32 | static inline void khugepaged_exit(struct mm_struct *mm) |
33 | { |
34 | if (test_bit(MMF_VM_HUGEPAGE, &mm->flags)) |
35 | __khugepaged_exit(mm); |
36 | } |
37 | |
38 | static inline int khugepaged_enter(struct vm_area_struct *vma) |
39 | { |
40 | if (!test_bit(MMF_VM_HUGEPAGE, &vma->vm_mm->flags)) |
41 | if ((khugepaged_always() || |
42 | (khugepaged_req_madv() && |
43 | vma->vm_flags & VM_HUGEPAGE)) && |
44 | !(vma->vm_flags & VM_NOHUGEPAGE)) |
45 | if (__khugepaged_enter(vma->vm_mm)) |
46 | return -ENOMEM; |
47 | return 0; |
48 | } |
49 | #else /* CONFIG_TRANSPARENT_HUGEPAGE */ |
50 | static inline int khugepaged_fork(struct mm_struct *mm, struct mm_struct *oldmm) |
51 | { |
52 | return 0; |
53 | } |
54 | static inline void khugepaged_exit(struct mm_struct *mm) |
55 | { |
56 | } |
57 | static inline int khugepaged_enter(struct vm_area_struct *vma) |
58 | { |
59 | return 0; |
60 | } |
61 | static inline int khugepaged_enter_vma_merge(struct vm_area_struct *vma) |
62 | { |
63 | return 0; |
64 | } |
65 | #endif /* CONFIG_TRANSPARENT_HUGEPAGE */ |
66 | |
67 | #endif /* _LINUX_KHUGEPAGED_H */ |
68 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9