projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
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 | ||
| 1da177e4 LT |
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> | |
| 1da177e4 LT |
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 | ||
| a5516438 AK |
24 | pte_t *huge_pte_alloc(struct mm_struct *mm, |
| 25 | unsigned long addr, unsigned long sz) | |
| 1da177e4 LT |
26 | { |
| 27 | pgd_t *pgd; | |
| 3f787fe2 | 28 | pud_t *pud; |
| 1da177e4 LT |
29 | pmd_t *pmd; |
| 30 | pte_t *pte = NULL; | |
| 31 | ||
| 32 | pgd = pgd_offset(mm, addr); | |
| 33 | if (pgd) { | |
| 3f787fe2 PM |
34 | pud = pud_alloc(mm, pgd, addr); |
| 35 | if (pud) { | |
| 36 | pmd = pmd_alloc(mm, pud, addr); | |
| 37 | if (pmd) | |
| 3ed3a4f0 | 38 | pte = pte_alloc_map(mm, pmd, addr); |
| 3f787fe2 | 39 | } |
| 1da177e4 | 40 | } |
| 3f787fe2 | 41 | |
| 1da177e4 LT |
42 | return pte; |
| 43 | } | |
| 44 | ||
| 63551ae0 | 45 | pte_t *huge_pte_offset(struct mm_struct *mm, unsigned long addr) |
| 1da177e4 LT |
46 | { |
| 47 | pgd_t *pgd; | |
| 3f787fe2 | 48 | pud_t *pud; |
| 1da177e4 LT |
49 | pmd_t *pmd; |
| 50 | pte_t *pte = NULL; | |
| 51 | ||
| 52 | pgd = pgd_offset(mm, addr); | |
| 53 | if (pgd) { | |
| 3f787fe2 PM |
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 | } | |
| 63551ae0 | 60 | } |
| 1da177e4 | 61 | |
| 3f787fe2 | 62 | return pte; |
| 1da177e4 LT |
63 | } |
| 64 | ||
| 1da177e4 LT |
65 | int pmd_huge(pmd_t pmd) |
| 66 | { | |
| 67 | return 0; | |
| 68 | } | |
| 69 | ||
| ceb86879 AK |
70 | int pud_huge(pud_t pud) |
| 71 | { | |
| 72 | return 0; | |
| 73 | } |