1 /* pgalloc.h: Page allocation routines for FRV
3 * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
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.
12 * include/asm-m68knommu/pgalloc.h
13 * include/asm-i386/pgalloc.h
15 #ifndef _ASM_PGALLOC_H
16 #define _ASM_PGALLOC_H
18 #include <linux/config.h>
19 #include <asm/setup.h>
20 #include <asm/virtconvert.h>
24 #define pmd_populate_kernel(mm, pmd, pte) __set_pmd(pmd, __pa(pte) | _PAGE_TABLE)
25 #define pmd_populate(MM, PMD, PAGE) \
27 __set_pmd((PMD), page_to_pfn(PAGE) << PAGE_SHIFT | _PAGE_TABLE); \
31 * Allocate and free page tables.
34 extern pgd_t *pgd_alloc(struct mm_struct *);
35 extern void pgd_free(pgd_t *);
37 extern pte_t *pte_alloc_one_kernel(struct mm_struct *, unsigned long);
39 extern struct page *pte_alloc_one(struct mm_struct *, unsigned long);
41 static inline void pte_free_kernel(pte_t *pte)
43 free_page((unsigned long)pte);
46 static inline void pte_free(struct page *pte)
51 #define __pte_free_tlb(tlb,pte) tlb_remove_page((tlb),(pte))
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.)
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)
62 #endif /* CONFIG_MMU */
64 #endif /* _ASM_PGALLOC_H */