tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _LINUX_KHUGEPAGED_H
3#define _LINUX_KHUGEPAGED_H
4
5extern unsigned int khugepaged_max_ptes_none __read_mostly;
6#ifdef CONFIG_TRANSPARENT_HUGEPAGE
7extern struct attribute_group khugepaged_attr_group;
8
9extern int khugepaged_init(void);
10extern void khugepaged_destroy(void);
11extern int start_stop_khugepaged(void);
12extern void __khugepaged_enter(struct mm_struct *mm);
13extern void __khugepaged_exit(struct mm_struct *mm);
14extern void khugepaged_enter_vma(struct vm_area_struct *vma,
15 unsigned long vm_flags);
16extern void khugepaged_min_free_kbytes_update(void);
17extern bool current_is_khugepaged(void);
18extern int collapse_pte_mapped_thp(struct mm_struct *mm, unsigned long addr,
19 bool install_pmd);
20
21static inline void khugepaged_fork(struct mm_struct *mm, struct mm_struct *oldmm)
22{
23 if (test_bit(MMF_VM_HUGEPAGE, &oldmm->flags))
24 __khugepaged_enter(mm);
25}
26
27static inline void khugepaged_exit(struct mm_struct *mm)
28{
29 if (test_bit(MMF_VM_HUGEPAGE, &mm->flags))
30 __khugepaged_exit(mm);
31}
32#else /* CONFIG_TRANSPARENT_HUGEPAGE */
33static inline void khugepaged_fork(struct mm_struct *mm, struct mm_struct *oldmm)
34{
35}
36static inline void khugepaged_exit(struct mm_struct *mm)
37{
38}
39static inline void khugepaged_enter_vma(struct vm_area_struct *vma,
40 unsigned long vm_flags)
41{
42}
43static inline int collapse_pte_mapped_thp(struct mm_struct *mm,
44 unsigned long addr, bool install_pmd)
45{
46 return 0;
47}
48
49static inline void khugepaged_min_free_kbytes_update(void)
50{
51}
52
53static inline bool current_is_khugepaged(void)
54{
55 return false;
56}
57#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
58
59#endif /* _LINUX_KHUGEPAGED_H */