Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
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/config.h"
12#include "linux/mm.h"
13#include "asm/fixmap.h"
14
15#define pmd_populate_kernel(mm, pmd, pte) \
16 set_pmd(pmd, __pmd(_PAGE_TABLE + (unsigned long) __pa(pte)))
17
18#define pmd_populate(mm, pmd, pte) \
19 set_pmd(pmd, __pmd(_PAGE_TABLE + \
20 ((unsigned long long)page_to_pfn(pte) << \
21 (unsigned long long) PAGE_SHIFT)))
22
23/*
24 * Allocate and free page tables.
25 */
26extern pgd_t *pgd_alloc(struct mm_struct *);
27extern void pgd_free(pgd_t *pgd);
28
29extern pte_t *pte_alloc_one_kernel(struct mm_struct *, unsigned long);
30extern struct page *pte_alloc_one(struct mm_struct *, unsigned long);
31
32static inline void pte_free_kernel(pte_t *pte)
33{
34 free_page((unsigned long) pte);
35}
36
37static inline void pte_free(struct page *pte)
38{
39 __free_page(pte);
40}
41
42#define __pte_free_tlb(tlb,pte) tlb_remove_page((tlb),(pte))
43
44#ifdef CONFIG_3_LEVEL_PGTABLES
45/*
46 * In the 3-level case we free the pmds as part of the pgd.
47 */
48#define pmd_free(x) do { } while (0)
49#define __pmd_free_tlb(tlb,x) do { } while (0)
50#endif
51
52#define check_pgt_cache() do { } while (0)
53
54#endif
55
56/*
57 * Overrides for Emacs so that we follow Linus's tabbing style.
58 * Emacs will notice this stuff at the end of the file and automatically
59 * adjust the settings for this buffer only. This must remain at the end
60 * of the file.
61 * ---------------------------------------------------------------------------
62 * Local variables:
63 * c-file-style: "linux"
64 * End:
65 */