1/* 2 * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com) 3 * Copyright 2003 PathScale, Inc. 4 * Derived from include/asm-i386/pgalloc.h and include/asm-i386/pgtable.h 5 * Licensed under the GPL 6 */ 7 8#ifndef __UM_PGALLOC_H 9#define __UM_PGALLOC_H 10 11#include "linux/mm.h" 12#include "asm/fixmap.h" 13 14#define pmd_populate_kernel(mm, pmd, pte) \ 15 set_pmd(pmd, __pmd(_PAGE_TABLE + (unsigned long) __pa(pte))) 16 17#define pmd_populate(mm, pmd, pte) \ 18 set_pmd(pmd, __pmd(_PAGE_TABLE + \ 19 ((unsigned long long)page_to_pfn(pte) << \ 20 (unsigned long long) PAGE_SHIFT))) 21 22/* 23 * Allocate and free page tables. 24 */ 25extern pgd_t *pgd_alloc(struct mm_struct *); 26extern void pgd_free(pgd_t *pgd); 27 28extern pte_t *pte_alloc_one_kernel(struct mm_struct *, unsigned long); 29extern struct page *pte_alloc_one(struct mm_struct *, unsigned long); 30 31static inline void pte_free_kernel(pte_t *pte) 32{ 33 free_page((unsigned long) pte); 34} 35 36static inline void pte_free(struct page *pte) 37{ 38 __free_page(pte); 39} 40 41#define __pte_free_tlb(tlb,pte) tlb_remove_page((tlb),(pte)) 42 43#ifdef CONFIG_3_LEVEL_PGTABLES 44 45extern __inline__ void pmd_free(pmd_t *pmd) 46{ 47 free_page((unsigned long)pmd); 48} 49 50#define __pmd_free_tlb(tlb,x) tlb_remove_page((tlb),virt_to_page(x)) 51#endif 52 53#define check_pgt_cache() do { } while (0) 54 55#endif 56 57/* 58 * Overrides for Emacs so that we follow Linus's tabbing style. 59 * Emacs will notice this stuff at the end of the file and automatically 60 * adjust the settings for this buffer only. This must remain at the end 61 * of the file. 62 * --------------------------------------------------------------------------- 63 * Local variables: 64 * c-file-style: "linux" 65 * End: 66 */ 67