/* 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,address)			\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,a)		do { } while (0) #endif /* CONFIG_MMU */ #endif /* _ASM_PGALLOC_H */