81 lines
1.7 KiB
C
81 lines
1.7 KiB
C
/*
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* Copyright (C) 2004-2006 Atmel Corporation
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef __ASM_AVR32_PGALLOC_H
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#define __ASM_AVR32_PGALLOC_H
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#include <asm/processor.h>
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#include <linux/threads.h>
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#include <linux/slab.h>
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#include <linux/mm.h>
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#define pmd_populate_kernel(mm, pmd, pte) \
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set_pmd(pmd, __pmd(_PAGE_TABLE + __pa(pte)))
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static __inline__ void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
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pgtable_t pte)
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{
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set_pmd(pmd, __pmd(_PAGE_TABLE + page_to_phys(pte)));
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}
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#define pmd_pgtable(pmd) pmd_page(pmd)
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/*
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* Allocate and free page tables
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*/
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static __inline__ pgd_t *pgd_alloc(struct mm_struct *mm)
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{
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return kcalloc(USER_PTRS_PER_PGD, sizeof(pgd_t), GFP_KERNEL);
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}
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static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
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{
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kfree(pgd);
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}
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static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
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unsigned long address)
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{
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pte_t *pte;
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pte = (pte_t *)get_zeroed_page(GFP_KERNEL | __GFP_REPEAT);
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return pte;
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}
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static inline struct page *pte_alloc_one(struct mm_struct *mm,
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unsigned long address)
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{
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struct page *pte;
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pte = alloc_page(GFP_KERNEL | __GFP_REPEAT | __GFP_ZERO);
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if (!pte)
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return NULL;
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pgtable_page_ctor(pte);
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return pte;
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}
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static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
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{
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free_page((unsigned long)pte);
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}
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static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
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{
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pgtable_page_dtor(pte);
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__free_page(pte);
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}
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#define __pte_free_tlb(tlb,pte) \
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do { \
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pgtable_page_dtor(pte); \
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tlb_remove_page((tlb), pte); \
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} while (0)
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#define check_pgt_cache() do { } while(0)
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#endif /* __ASM_AVR32_PGALLOC_H */
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