| /* 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) |
| |
| /* |
| * 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 struct page *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, struct page *pte) |
| { |
| __free_page(pte); |
| } |
| |
| #define __pte_free_tlb(tlb,pte) tlb_remove_page((tlb),(pte)) |
| |
| /* |
| * 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 */ |
