Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1#ifndef _I386_PGALLOC_H
2#define _I386_PGALLOC_H
3
4#include <asm/fixmap.h>
5#include <linux/threads.h>
6#include <linux/mm.h> /* for struct page */
7
8#define pmd_populate_kernel(mm, pmd, pte) \
9 set_pmd(pmd, __pmd(_PAGE_TABLE + __pa(pte)))
10
11#define pmd_populate(mm, pmd, pte) \
12 set_pmd(pmd, __pmd(_PAGE_TABLE + \
13 ((unsigned long long)page_to_pfn(pte) << \
14 (unsigned long long) PAGE_SHIFT)))
15/*
16 * Allocate and free page tables.
17 */
18extern pgd_t *pgd_alloc(struct mm_struct *);
19extern void pgd_free(pgd_t *pgd);
20
21extern pte_t *pte_alloc_one_kernel(struct mm_struct *, unsigned long);
22extern struct page *pte_alloc_one(struct mm_struct *, unsigned long);
23
24static inline void pte_free_kernel(pte_t *pte)
25{
26 free_page((unsigned long)pte);
27}
28
29static inline void pte_free(struct page *pte)
30{
31 __free_page(pte);
32}
33
34
35#define __pte_free_tlb(tlb,pte) tlb_remove_page((tlb),(pte))
36
37#ifdef CONFIG_X86_PAE
38/*
39 * In the PAE case we free the pmds as part of the pgd.
40 */
41#define pmd_alloc_one(mm, addr) ({ BUG(); ((pmd_t *)2); })
42#define pmd_free(x) do { } while (0)
43#define __pmd_free_tlb(tlb,x) do { } while (0)
44#define pud_populate(mm, pmd, pte) BUG()
45#endif
46
47#define check_pgt_cache() do { } while (0)
48
49#endif /* _I386_PGALLOC_H */