diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-frv/pgalloc.h |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'include/asm-frv/pgalloc.h')
-rw-r--r-- | include/asm-frv/pgalloc.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/include/asm-frv/pgalloc.h b/include/asm-frv/pgalloc.h new file mode 100644 index 000000000000..1bd28f41bfa8 --- /dev/null +++ b/include/asm-frv/pgalloc.h | |||
@@ -0,0 +1,64 @@ | |||
1 | /* pgalloc.h: Page allocation routines for FRV | ||
2 | * | ||
3 | * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved. | ||
4 | * Written by David Howells (dhowells@redhat.com) | ||
5 | * | ||
6 | * This program is free software; you can redistribute it and/or | ||
7 | * modify it under the terms of the GNU General Public License | ||
8 | * as published by the Free Software Foundation; either version | ||
9 | * 2 of the License, or (at your option) any later version. | ||
10 | * | ||
11 | * Derived from: | ||
12 | * include/asm-m68knommu/pgalloc.h | ||
13 | * include/asm-i386/pgalloc.h | ||
14 | */ | ||
15 | #ifndef _ASM_PGALLOC_H | ||
16 | #define _ASM_PGALLOC_H | ||
17 | |||
18 | #include <linux/config.h> | ||
19 | #include <asm/setup.h> | ||
20 | #include <asm/virtconvert.h> | ||
21 | |||
22 | #ifdef CONFIG_MMU | ||
23 | |||
24 | #define pmd_populate_kernel(mm, pmd, pte) __set_pmd(pmd, __pa(pte) | _PAGE_TABLE) | ||
25 | #define pmd_populate(MM, PMD, PAGE) \ | ||
26 | do { \ | ||
27 | __set_pmd((PMD), page_to_pfn(PAGE) << PAGE_SHIFT | _PAGE_TABLE); \ | ||
28 | } while(0) | ||
29 | |||
30 | /* | ||
31 | * Allocate and free page tables. | ||
32 | */ | ||
33 | |||
34 | extern pgd_t *pgd_alloc(struct mm_struct *); | ||
35 | extern void pgd_free(pgd_t *); | ||
36 | |||
37 | extern pte_t *pte_alloc_one_kernel(struct mm_struct *, unsigned long); | ||
38 | |||
39 | extern struct page *pte_alloc_one(struct mm_struct *, unsigned long); | ||
40 | |||
41 | static inline void pte_free_kernel(pte_t *pte) | ||
42 | { | ||
43 | free_page((unsigned long)pte); | ||
44 | } | ||
45 | |||
46 | static inline void pte_free(struct page *pte) | ||
47 | { | ||
48 | __free_page(pte); | ||
49 | } | ||
50 | |||
51 | #define __pte_free_tlb(tlb,pte) tlb_remove_page((tlb),(pte)) | ||
52 | |||
53 | /* | ||
54 | * allocating and freeing a pmd is trivial: the 1-entry pmd is | ||
55 | * inside the pgd, so has no extra memory associated with it. | ||
56 | * (In the PAE case we free the pmds as part of the pgd.) | ||
57 | */ | ||
58 | #define pmd_alloc_one(mm, addr) ({ BUG(); ((pmd_t *) 2); }) | ||
59 | #define pmd_free(x) do { } while (0) | ||
60 | #define __pmd_free_tlb(tlb,x) do { } while (0) | ||
61 | |||
62 | #endif /* CONFIG_MMU */ | ||
63 | |||
64 | #endif /* _ASM_PGALLOC_H */ | ||