diff options
author | David Howells <dhowells@redhat.com> | 2009-04-10 01:48:06 +0100 |
---|---|---|
committer | David Howells <dhowells@redhat.com> | 2009-04-10 01:48:06 +0100 |
commit | e69cc9278831139660cb99bde52908f145338d77 (patch) | |
tree | fdc1f002b6036a2220d73c86a253886fa76015dc /arch/frv/include/asm/pgalloc.h | |
parent | 187934655fa0637d4ef3967d4543c6dcccf33058 (diff) | |
download | linux-e69cc9278831139660cb99bde52908f145338d77.tar.bz2 |
FRV: Move to arch/frv/include/asm/
Move arch headers from include/asm-frv/ to arch/frv/include/asm/.
Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'arch/frv/include/asm/pgalloc.h')
-rw-r--r-- | arch/frv/include/asm/pgalloc.h | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/arch/frv/include/asm/pgalloc.h b/arch/frv/include/asm/pgalloc.h new file mode 100644 index 000000000000..971e6addb009 --- /dev/null +++ b/arch/frv/include/asm/pgalloc.h @@ -0,0 +1,69 @@ +/* pgalloc.h: Page allocation routines for FRV + * + * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + * + * Derived from: + * include/asm-m68knommu/pgalloc.h + * include/asm-i386/pgalloc.h + */ +#ifndef _ASM_PGALLOC_H +#define _ASM_PGALLOC_H + +#include <asm/setup.h> +#include <asm/virtconvert.h> + +#ifdef CONFIG_MMU + +#define pmd_populate_kernel(mm, pmd, pte) __set_pmd(pmd, __pa(pte) | _PAGE_TABLE) +#define pmd_populate(MM, PMD, PAGE) \ +do { \ + __set_pmd((PMD), page_to_pfn(PAGE) << PAGE_SHIFT | _PAGE_TABLE); \ +} while(0) +#define pmd_pgtable(pmd) pmd_page(pmd) + +/* + * Allocate and free page tables. + */ + +extern pgd_t *pgd_alloc(struct mm_struct *); +extern void pgd_free(struct mm_struct *mm, pgd_t *); + +extern pte_t *pte_alloc_one_kernel(struct mm_struct *, unsigned long); + +extern pgtable_t pte_alloc_one(struct mm_struct *, unsigned long); + +static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte) +{ + free_page((unsigned long)pte); +} + +static inline void pte_free(struct mm_struct *mm, pgtable_t pte) +{ + pgtable_page_dtor(pte); + __free_page(pte); +} + +#define __pte_free_tlb(tlb,pte) \ +do { \ + pgtable_page_dtor(pte); \ + tlb_remove_page((tlb),(pte)); \ +} while (0) + +/* + * allocating and freeing a pmd is trivial: the 1-entry pmd is + * inside the pgd, so has no extra memory associated with it. + * (In the PAE case we free the pmds as part of the pgd.) + */ +#define pmd_alloc_one(mm, addr) ({ BUG(); ((pmd_t *) 2); }) +#define pmd_free(mm, x) do { } while (0) +#define __pmd_free_tlb(tlb,x) do { } while (0) + +#endif /* CONFIG_MMU */ + +#endif /* _ASM_PGALLOC_H */ |