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