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Embedded Linux Audio
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#ifndef _LINUX_KHUGEPAGED_H #define _LINUX_KHUGEPAGED_H #include <linux/sched.h> /* MMF_VM_HUGEPAGE */ #ifdef CONFIG_TRANSPARENT_HUGEPAGE extern int __khugepaged_enter(struct mm_struct *mm); extern void __khugepaged_exit(struct mm_struct *mm); extern int khugepaged_enter_vma_merge(struct vm_area_struct *vma); #define khugepaged_enabled() \ (transparent_hugepage_flags & \ ((1<<TRANSPARENT_HUGEPAGE_FLAG) | \ (1<<TRANSPARENT_HUGEPAGE_REQ_MADV_FLAG))) #define khugepaged_always() \ (transparent_hugepage_flags & \ (1<<TRANSPARENT_HUGEPAGE_FLAG)) #define khugepaged_req_madv() \ (transparent_hugepage_flags & \ (1<<TRANSPARENT_HUGEPAGE_REQ_MADV_FLAG)) #define khugepaged_defrag() \ (transparent_hugepage_flags & \ (1<<TRANSPARENT_HUGEPAGE_DEFRAG_KHUGEPAGED_FLAG)) static inline int khugepaged_fork(struct mm_struct *mm, struct mm_struct *oldmm) { if (test_bit(MMF_VM_HUGEPAGE, &oldmm->flags)) return __khugepaged_enter(mm); return 0; } static inline void khugepaged_exit(struct mm_struct *mm) { if (test_bit(MMF_VM_HUGEPAGE, &mm->flags)) __khugepaged_exit(mm); } static inline int khugepaged_enter(struct vm_area_struct *vma) { if (!test_bit(MMF_VM_HUGEPAGE, &vma->vm_mm->flags)) if ((khugepaged_always() || (khugepaged_req_madv() && vma->vm_flags & VM_HUGEPAGE)) && !(vma->vm_flags & VM_NOHUGEPAGE)) if (__khugepaged_enter(vma->vm_mm)) return -ENOMEM; return 0; } #else /* CONFIG_TRANSPARENT_HUGEPAGE */ static inline int khugepaged_fork(struct mm_struct *mm, struct mm_struct *oldmm) { return 0; } static inline void khugepaged_exit(struct mm_struct *mm) { } static inline int khugepaged_enter(struct vm_area_struct *vma) { return 0; } static inline int khugepaged_enter_vma_merge(struct vm_area_struct *vma) { return 0; } #endif /* CONFIG_TRANSPARENT_HUGEPAGE */ #endif /* _LINUX_KHUGEPAGED_H */