Linux kernel mirror (for testing)
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linux
1#ifndef _ASM_M32R_PGALLOC_H
2#define _ASM_M32R_PGALLOC_H
3
4#include <linux/mm.h>
5
6#include <asm/io.h>
7
8#define pmd_populate_kernel(mm, pmd, pte) \
9 set_pmd(pmd, __pmd(_PAGE_TABLE + __pa(pte)))
10
11static __inline__ void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
12 struct page *pte)
13{
14 set_pmd(pmd, __pmd(_PAGE_TABLE + page_to_phys(pte)));
15}
16
17/*
18 * Allocate and free page tables.
19 */
20static __inline__ pgd_t *pgd_alloc(struct mm_struct *mm)
21{
22 pgd_t *pgd = (pgd_t *)__get_free_page(GFP_KERNEL|__GFP_ZERO);
23
24 return pgd;
25}
26
27static __inline__ void pgd_free(pgd_t *pgd)
28{
29 free_page((unsigned long)pgd);
30}
31
32static __inline__ pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
33 unsigned long address)
34{
35 pte_t *pte = (pte_t *)__get_free_page(GFP_KERNEL|__GFP_ZERO);
36
37 return pte;
38}
39
40static __inline__ struct page *pte_alloc_one(struct mm_struct *mm,
41 unsigned long address)
42{
43 struct page *pte = alloc_page(GFP_KERNEL|__GFP_ZERO);
44
45
46 return pte;
47}
48
49static __inline__ void pte_free_kernel(pte_t *pte)
50{
51 free_page((unsigned long)pte);
52}
53
54static __inline__ void pte_free(struct page *pte)
55{
56 __free_page(pte);
57}
58
59#define __pte_free_tlb(tlb, pte) pte_free((pte))
60
61/*
62 * allocating and freeing a pmd is trivial: the 1-entry pmd is
63 * inside the pgd, so has no extra memory associated with it.
64 * (In the PAE case we free the pmds as part of the pgd.)
65 */
66
67#define pmd_alloc_one(mm, addr) ({ BUG(); ((pmd_t *)2); })
68#define pmd_free(x) do { } while (0)
69#define __pmd_free_tlb(tlb, x) do { } while (0)
70#define pgd_populate(mm, pmd, pte) BUG()
71
72#define check_pgt_cache() do { } while (0)
73
74#endif /* _ASM_M32R_PGALLOC_H */