69 lines
1.8 KiB
C
69 lines
1.8 KiB
C
|
/* SPDX-License-Identifier: GPL-2.0 */
|
||
|
|
#ifndef _LINUX_KHUGEPAGED_H
|
||
|
|
#define _LINUX_KHUGEPAGED_H
|
||
|
|
|
||
|
|
#include <linux/sched/coredump.h> /* MMF_VM_HUGEPAGE */
|
||
|
|
|
||
|
|
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
|
||
|
|
extern struct attribute_group khugepaged_attr_group;
|
||
|
|
|
||
|
|
extern int khugepaged_init(void);
|
||
|
|
extern void khugepaged_destroy(void);
|
||
|
|
extern int start_stop_khugepaged(void);
|
||
|
|
extern void __khugepaged_enter(struct mm_struct *mm);
|
||
|
|
extern void __khugepaged_exit(struct mm_struct *mm);
|
||
|
|
extern void khugepaged_enter_vma(struct vm_area_struct *vma,
|
||
|
|
unsigned long vm_flags);
|
||
|
|
extern void khugepaged_min_free_kbytes_update(void);
|
||
|
|
extern bool current_is_khugepaged(void);
|
||
|
|
#ifdef CONFIG_SHMEM
|
||
|
|
extern int collapse_pte_mapped_thp(struct mm_struct *mm, unsigned long addr,
|
||
|
|
bool install_pmd);
|
||
|
|
#else
|
||
|
|
static inline int collapse_pte_mapped_thp(struct mm_struct *mm,
|
||
|
|
unsigned long addr, bool install_pmd)
|
||
|
|
{
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
static inline void khugepaged_fork(struct mm_struct *mm, struct mm_struct *oldmm)
|
||
|
|
{
|
||
|
|
if (test_bit(MMF_VM_HUGEPAGE, &oldmm->flags))
|
||
|
|
__khugepaged_enter(mm);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void khugepaged_exit(struct mm_struct *mm)
|
||
|
|
{
|
||
|
|
if (test_bit(MMF_VM_HUGEPAGE, &mm->flags))
|
||
|
|
__khugepaged_exit(mm);
|
||
|
|
}
|
||
|
|
#else /* CONFIG_TRANSPARENT_HUGEPAGE */
|
||
|
|
static inline void khugepaged_fork(struct mm_struct *mm, struct mm_struct *oldmm)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
static inline void khugepaged_exit(struct mm_struct *mm)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
static inline void khugepaged_enter_vma(struct vm_area_struct *vma,
|
||
|
|
unsigned long vm_flags)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
static inline int collapse_pte_mapped_thp(struct mm_struct *mm,
|
||
|
|
unsigned long addr, bool install_pmd)
|
||
|
|
{
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void khugepaged_min_free_kbytes_update(void)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline bool current_is_khugepaged(void)
|
||
|
|
{
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
|
||
|
|
|
||
|
|
#endif /* _LINUX_KHUGEPAGED_H */
|