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/* * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. * * Copyright (C) 1994 - 2001, 2003 by Ralf Baechle * Copyright (C) 1999, 2000, 2001 Silicon Graphics, Inc. */ #ifndef _ASM_PGALLOC_H #define _ASM_PGALLOC_H #include <linux/highmem.h> #include <linux/mm.h> #include <linux/sched.h> #include <asm-generic/pgalloc.h> /* for pte_{alloc,free}_one */ static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte) { set_pmd(pmd, __pmd((unsigned long)pte)); } static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, pgtable_t pte) { set_pmd(pmd, __pmd((unsigned long)page_address(pte))); } #define pmd_pgtable(pmd) pmd_page(pmd) /* * Initialize a new pmd table with invalid pointers. */ extern void pmd_init(unsigned long page, unsigned long pagetable); #ifndef __PAGETABLE_PMD_FOLDED static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) { set_pud(pud, __pud((unsigned long)pmd)); } #endif /* * Initialize a new pgd / pmd table with invalid pointers. */ extern void pgd_init(unsigned long page); extern pgd_t *pgd_alloc(struct mm_struct *mm); static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd) { free_pages((unsigned long)pgd, PGD_ORDER); } #define __pte_free_tlb(tlb,pte,address) \ do { \ pgtable_pte_page_dtor(pte); \ tlb_remove_page((tlb), pte); \ } while (0) #ifndef __PAGETABLE_PMD_FOLDED static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address) { pmd_t *pmd; pmd = (pmd_t *) __get_free_pages(GFP_KERNEL, PMD_ORDER); if (pmd) pmd_init((unsigned long)pmd, (unsigned long)invalid_pte_table); return pmd; } static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd) { free_pages((unsigned long)pmd, PMD_ORDER); } #define __pmd_free_tlb(tlb, x, addr) pmd_free((tlb)->mm, x) #endif #ifndef __PAGETABLE_PUD_FOLDED static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long address) { pud_t *pud; pud = (pud_t *) __get_free_pages(GFP_KERNEL, PUD_ORDER); if (pud) pud_init((unsigned long)pud, (unsigned long)invalid_pmd_table); return pud; } static inline void pud_free(struct mm_struct *mm, pud_t *pud) { free_pages((unsigned long)pud, PUD_ORDER); } static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pud_t *pud) { set_pgd(pgd, __pgd((unsigned long)pud)); } #define __pud_free_tlb(tlb, x, addr) pud_free((tlb)->mm, x) #endif /* __PAGETABLE_PUD_FOLDED */ extern void pagetable_init(void); #endif /* _ASM_PGALLOC_H */
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