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pgalloc.h
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56 lines (44 loc) · 1.49 KB
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/* MN10300 Page and page table/directory allocation * * Copyright (C) 2007 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 Licence * as published by the Free Software Foundation; either version * 2 of the Licence, or (at your option) any later version. */ #ifndef _ASM_PGALLOC_H #define _ASM_PGALLOC_H #include <asm/processor.h> #include <asm/page.h> #include <linux/threads.h> #include <linux/mm.h> /* for struct page */ struct mm_struct; struct page; /* attach a page table to a PMD entry */ #define pmd_populate_kernel(mm, pmd, pte) \ set_pmd(pmd, __pmd(__pa(pte) | _PAGE_TABLE)) static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, struct page *pte) { set_pmd(pmd, __pmd((page_to_pfn(pte) << PAGE_SHIFT) | _PAGE_TABLE)); } #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 *, 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)) #endif /* _ASM_PGALLOC_H */
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