| | 1 | /* |
| | 2 | * arch/sh/mm/hugetlbpage.c |
| | 3 | * |
| | 4 | * SuperH HugeTLB page support. |
| | 5 | * |
| | 6 | * Cloned from sparc64 by Paul Mundt. |
| | 7 | * |
| | 8 | * Copyright (C) 2002, 2003 David S. Miller (davem@redhat.com) |
| | 9 | */ |
| | 10 | |
| | 11 | #include <linux/init.h> |
| | 12 | #include <linux/fs.h> |
| | 13 | #include <linux/mm.h> |
| | 14 | #include <linux/hugetlb.h> |
| | 15 | #include <linux/pagemap.h> |
| | 16 | #include <linux/sysctl.h> |
| | 17 | |
| | 18 | #include <asm/mman.h> |
| | 19 | #include <asm/pgalloc.h> |
| | 20 | #include <asm/tlb.h> |
| | 21 | #include <asm/tlbflush.h> |
| | 22 | #include <asm/cacheflush.h> |
| | 23 | |
| | 24 | pte_t *huge_pte_alloc(struct mm_struct *mm, |
| | 25 | unsigned long addr, unsigned long sz) |
| | 26 | { |
| | 27 | pgd_t *pgd; |
| | 28 | pud_t *pud; |
| | 29 | pmd_t *pmd; |
| | 30 | pte_t *pte = NULL; |
| | 31 | |
| | 32 | pgd = pgd_offset(mm, addr); |
| | 33 | if (pgd) { |
| | 34 | pud = pud_alloc(mm, pgd, addr); |
| | 35 | if (pud) { |
| | 36 | pmd = pmd_alloc(mm, pud, addr); |
| | 37 | if (pmd) |
| | 38 | pte = pte_alloc_map(mm, pmd, addr); |
| | 39 | } |
| | 40 | } |
| | 41 | |
| | 42 | return pte; |
| | 43 | } |
| | 44 | |
| | 45 | pte_t *huge_pte_offset(struct mm_struct *mm, unsigned long addr) |
| | 46 | { |
| | 47 | pgd_t *pgd; |
| | 48 | pud_t *pud; |
| | 49 | pmd_t *pmd; |
| | 50 | pte_t *pte = NULL; |
| | 51 | |
| | 52 | pgd = pgd_offset(mm, addr); |
| | 53 | if (pgd) { |
| | 54 | pud = pud_offset(pgd, addr); |
| | 55 | if (pud) { |
| | 56 | pmd = pmd_offset(pud, addr); |
| | 57 | if (pmd) |
| | 58 | pte = pte_offset_map(pmd, addr); |
| | 59 | } |
| | 60 | } |
| | 61 | |
| | 62 | return pte; |
| | 63 | } |
| | 64 | |
| | 65 | int pmd_huge(pmd_t pmd) |
| | 66 | { |
| | 67 | return 0; |
| | 68 | } |
| | 69 | |
| | 70 | int pud_huge(pud_t pud) |
| | 71 | { |
| | 72 | return 0; |
| | 73 | } |
projects / deliverable / linux.git / blame_incremental