| /* 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 <linux/config.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(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(pte_t *pte) | |
| { | |
| free_page((unsigned long)pte); | |
| } | |
| static inline void pte_free(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(x) do { } while (0) | |
| #define __pmd_free_tlb(tlb,x) do { } while (0) | |
| #endif /* CONFIG_MMU */ | |
| #endif /* _ASM_PGALLOC_H */ |