1/* 2 * Copyright 2010 Tilera Corporation. All Rights Reserved. 3 * 4 * This program is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU General Public License 6 * as published by the Free Software Foundation, version 2. 7 * 8 * This program is distributed in the hope that it will be useful, but 9 * WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or 11 * NON INFRINGEMENT. See the GNU General Public License for 12 * more details. 13 */ 14 15#ifndef _ASM_TILE_HUGETLB_H 16#define _ASM_TILE_HUGETLB_H 17 18#include <asm/page.h> 19 20 21static inline int is_hugepage_only_range(struct mm_struct *mm, 22 unsigned long addr, 23 unsigned long len) { 24 return 0; 25} 26 27/* 28 * If the arch doesn't supply something else, assume that hugepage 29 * size aligned regions are ok without further preparation. 30 */ 31static inline int prepare_hugepage_range(struct file *file, 32 unsigned long addr, unsigned long len) 33{ 34 struct hstate *h = hstate_file(file); 35 if (len & ~huge_page_mask(h)) 36 return -EINVAL; 37 if (addr & ~huge_page_mask(h)) 38 return -EINVAL; 39 return 0; 40} 41 42static inline void hugetlb_prefault_arch_hook(struct mm_struct *mm) 43{ 44} 45 46static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb, 47 unsigned long addr, unsigned long end, 48 unsigned long floor, 49 unsigned long ceiling) 50{ 51 free_pgd_range(tlb, addr, end, floor, ceiling); 52} 53 54static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, 55 pte_t *ptep, pte_t pte) 56{ 57 set_pte(ptep, pte); 58} 59 60static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm, 61 unsigned long addr, pte_t *ptep) 62{ 63 return ptep_get_and_clear(mm, addr, ptep); 64} 65 66static inline void huge_ptep_clear_flush(struct vm_area_struct *vma, 67 unsigned long addr, pte_t *ptep) 68{ 69 ptep_clear_flush(vma, addr, ptep); 70} 71 72static inline int huge_pte_none(pte_t pte) 73{ 74 return pte_none(pte); 75} 76 77static inline pte_t huge_pte_wrprotect(pte_t pte) 78{ 79 return pte_wrprotect(pte); 80} 81 82static inline void huge_ptep_set_wrprotect(struct mm_struct *mm, 83 unsigned long addr, pte_t *ptep) 84{ 85 ptep_set_wrprotect(mm, addr, ptep); 86} 87 88static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma, 89 unsigned long addr, pte_t *ptep, 90 pte_t pte, int dirty) 91{ 92 return ptep_set_access_flags(vma, addr, ptep, pte, dirty); 93} 94 95static inline pte_t huge_ptep_get(pte_t *ptep) 96{ 97 return *ptep; 98} 99 100static inline int arch_prepare_hugepage(struct page *page) 101{ 102 return 0; 103} 104 105static inline void arch_release_hugepage(struct page *page) 106{ 107} 108 109#endif /* _ASM_TILE_HUGETLB_H */ 110