| #ifndef _ASM_POWERPC_HUGETLB_H |
| #define _ASM_POWERPC_HUGETLB_H |
| |
| #include <asm/page.h> |
| |
| pte_t *huge_pte_offset_and_shift(struct mm_struct *mm, |
| unsigned long addr, unsigned *shift); |
| |
| void flush_dcache_icache_hugepage(struct page *page); |
| |
| int is_hugepage_only_range(struct mm_struct *mm, unsigned long addr, |
| unsigned long len); |
| |
| void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr, |
| unsigned long end, unsigned long floor, |
| unsigned long ceiling); |
| |
| /* |
| * The version of vma_mmu_pagesize() in arch/powerpc/mm/hugetlbpage.c needs |
| * to override the version in mm/hugetlb.c |
| */ |
| #define vma_mmu_pagesize vma_mmu_pagesize |
| |
| /* |
| * If the arch doesn't supply something else, assume that hugepage |
| * size aligned regions are ok without further preparation. |
| */ |
| static inline int prepare_hugepage_range(struct file *file, |
| unsigned long addr, unsigned long len) |
| { |
| struct hstate *h = hstate_file(file); |
| if (len & ~huge_page_mask(h)) |
| return -EINVAL; |
| if (addr & ~huge_page_mask(h)) |
| return -EINVAL; |
| return 0; |
| } |
| |
| static inline void hugetlb_prefault_arch_hook(struct mm_struct *mm) |
| { |
| } |
| |
| |
| static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, |
| pte_t *ptep, pte_t pte) |
| { |
| set_pte_at(mm, addr, ptep, pte); |
| } |
| |
| static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm, |
| unsigned long addr, pte_t *ptep) |
| { |
| unsigned long old = pte_update(mm, addr, ptep, ~0UL, 1); |
| return __pte(old); |
| } |
| |
| static inline void huge_ptep_clear_flush(struct vm_area_struct *vma, |
| unsigned long addr, pte_t *ptep) |
| { |
| pte_t pte; |
| pte = huge_ptep_get_and_clear(vma->vm_mm, addr, ptep); |
| flush_tlb_page(vma, addr); |
| } |
| |
| static inline int huge_pte_none(pte_t pte) |
| { |
| return pte_none(pte); |
| } |
| |
| static inline pte_t huge_pte_wrprotect(pte_t pte) |
| { |
| return pte_wrprotect(pte); |
| } |
| |
| static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma, |
| unsigned long addr, pte_t *ptep, |
| pte_t pte, int dirty) |
| { |
| return ptep_set_access_flags(vma, addr, ptep, pte, dirty); |
| } |
| |
| static inline pte_t huge_ptep_get(pte_t *ptep) |
| { |
| return *ptep; |
| } |
| |
| static inline int arch_prepare_hugepage(struct page *page) |
| { |
| return 0; |
| } |
| |
| static inline void arch_release_hugepage(struct page *page) |
| { |
| } |
| |
| #endif /* _ASM_POWERPC_HUGETLB_H */ |
