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| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
|---|---|
| 2 | #ifndef _LINUX_KHUGEPAGED_H |
| 3 | #define _LINUX_KHUGEPAGED_H |
| 4 | |
| 5 | #include <linux/sched/coredump.h> /* MMF_VM_HUGEPAGE */ |
| 6 | |
| 7 | #ifdef CONFIG_TRANSPARENT_HUGEPAGE |
| 8 | extern struct attribute_group khugepaged_attr_group; |
| 9 | |
| 10 | extern int khugepaged_init(void); |
| 11 | extern void khugepaged_destroy(void); |
| 12 | extern int start_stop_khugepaged(void); |
| 13 | extern void __khugepaged_enter(struct mm_struct *mm); |
| 14 | extern void __khugepaged_exit(struct mm_struct *mm); |
| 15 | extern void khugepaged_enter_vma(struct vm_area_struct *vma, |
| 16 | unsigned long vm_flags); |
| 17 | extern void khugepaged_min_free_kbytes_update(void); |
| 18 | extern bool current_is_khugepaged(void); |
| 19 | #ifdef CONFIG_SHMEM |
| 20 | extern int collapse_pte_mapped_thp(struct mm_struct *mm, unsigned long addr, |
| 21 | bool install_pmd); |
| 22 | #else |
| 23 | static inline int collapse_pte_mapped_thp(struct mm_struct *mm, |
| 24 | unsigned long addr, bool install_pmd) |
| 25 | { |
| 26 | return 0; |
| 27 | } |
| 28 | #endif |
| 29 | |
| 30 | static inline void khugepaged_fork(struct mm_struct *mm, struct mm_struct *oldmm) |
| 31 | { |
| 32 | if (test_bit(MMF_VM_HUGEPAGE, &oldmm->flags)) |
| 33 | __khugepaged_enter(mm); |
| 34 | } |
| 35 | |
| 36 | static inline void khugepaged_exit(struct mm_struct *mm) |
| 37 | { |
| 38 | if (test_bit(MMF_VM_HUGEPAGE, &mm->flags)) |
| 39 | __khugepaged_exit(mm); |
| 40 | } |
| 41 | #else /* CONFIG_TRANSPARENT_HUGEPAGE */ |
| 42 | static inline void khugepaged_fork(struct mm_struct *mm, struct mm_struct *oldmm) |
| 43 | { |
| 44 | } |
| 45 | static inline void khugepaged_exit(struct mm_struct *mm) |
| 46 | { |
| 47 | } |
| 48 | static inline void khugepaged_enter_vma(struct vm_area_struct *vma, |
| 49 | unsigned long vm_flags) |
| 50 | { |
| 51 | } |
| 52 | static inline int collapse_pte_mapped_thp(struct mm_struct *mm, |
| 53 | unsigned long addr, bool install_pmd) |
| 54 | { |
| 55 | return 0; |
| 56 | } |
| 57 | |
| 58 | static inline void khugepaged_min_free_kbytes_update(void) |
| 59 | { |
| 60 | } |
| 61 | |
| 62 | static inline bool current_is_khugepaged(void) |
| 63 | { |
| 64 | return false; |
| 65 | } |
| 66 | #endif /* CONFIG_TRANSPARENT_HUGEPAGE */ |
| 67 | |
| 68 | #endif /* _LINUX_KHUGEPAGED_H */ |
| 69 |
Warning: This file is not a C or C++ file. It does not have highlighting.