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) 2004-2006 Atmel Corporation
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 */
8#ifndef __ASM_AVR32_PGALLOC_H
9#define __ASM_AVR32_PGALLOC_H
10
11#include <asm/processor.h>
12#include <linux/threads.h>
13#include <linux/slab.h>
14#include <linux/mm.h>
15
16#define pmd_populate_kernel(mm, pmd, pte) \
17 set_pmd(pmd, __pmd(_PAGE_TABLE + __pa(pte)))
18
19static __inline__ void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
20 pgtable_t pte)
21{
22 set_pmd(pmd, __pmd(_PAGE_TABLE + page_to_phys(pte)));
23}
24#define pmd_pgtable(pmd) pmd_page(pmd)
25
26/*
27 * Allocate and free page tables
28 */
29static __inline__ pgd_t *pgd_alloc(struct mm_struct *mm)
30{
31 return kcalloc(USER_PTRS_PER_PGD, sizeof(pgd_t), GFP_KERNEL);
32}
33
34static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
35{
36 kfree(pgd);
37}
38
39static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
40 unsigned long address)
41{
42 pte_t *pte;
43
44 pte = (pte_t *)get_zeroed_page(GFP_KERNEL | __GFP_REPEAT);
45
46 return pte;
47}
48
49static inline struct page *pte_alloc_one(struct mm_struct *mm,
50 unsigned long address)
51{
52 struct page *pte;
53
54 pte = alloc_page(GFP_KERNEL | __GFP_REPEAT | __GFP_ZERO);
55 if (!pte)
56 return NULL;
57 pgtable_page_ctor(pte);
58 return pte;
59}
60
61static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
62{
63 free_page((unsigned long)pte);
64}
65
66static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
67{
68 pgtable_page_dtor(pte);
69 __free_page(pte);
70}
71
72#define __pte_free_tlb(tlb,pte) \
73do { \
74 pgtable_page_dtor(pte); \
75 tlb_remove_page((tlb), pte); \
76} while (0)
77
78#define check_pgt_cache() do { } while(0)
79
80#endif /* __ASM_AVR32_PGALLOC_H */