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gerrit-public.fairphone.software / kernel / msm-4.9 / 3d5e2c13b13468f5eb2ac9323690af7e17f195fe / . / include / asm-avr32 / pgalloc.h
blob: b77e364b4c444a164c9741d2d6ab94df1dfc2e35 [file] [log] [blame]
Haavard Skinnemoen5f97f7f2006-09-25 23:32:13 -0700[diff] [blame]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 struct page *pte)
21{
22 set_pmd(pmd, __pmd(_PAGE_TABLE + page_to_phys(pte)));
23}
24
25/*
26 * Allocate and free page tables
27 */
28static __inline__ pgd_t *pgd_alloc(struct mm_struct *mm)
29{
Mariusz Kozlowski5221b342007-07-31 23:41:00 +0200[diff] [blame]30 return kcalloc(USER_PTRS_PER_PGD, sizeof(pgd_t), GFP_KERNEL);
Haavard Skinnemoen5f97f7f2006-09-25 23:32:13 -0700[diff] [blame]31}
32
Benjamin Herrenschmidt5e541972008-02-04 22:29:14 -0800[diff] [blame]33static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
Haavard Skinnemoen5f97f7f2006-09-25 23:32:13 -0700[diff] [blame]34{
35 kfree(pgd);
36}
37
38static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
39 unsigned long address)
40{
Haavard Skinnemoen5f97f7f2006-09-25 23:32:13 -0700[diff] [blame]41 pte_t *pte;
42
Haavard Skinnemoene7f3bac2007-08-03 13:29:01 +0200[diff] [blame]43 pte = (pte_t *)get_zeroed_page(GFP_KERNEL | __GFP_REPEAT);
Haavard Skinnemoen5f97f7f2006-09-25 23:32:13 -0700[diff] [blame]44
45 return pte;
46}
47
48static inline struct page *pte_alloc_one(struct mm_struct *mm,
49 unsigned long address)
50{
Haavard Skinnemoen5f97f7f2006-09-25 23:32:13 -0700[diff] [blame]51 struct page *pte;
52
Haavard Skinnemoene7f3bac2007-08-03 13:29:01 +0200[diff] [blame]53 pte = alloc_page(GFP_KERNEL | __GFP_REPEAT | __GFP_ZERO);
Haavard Skinnemoen5f97f7f2006-09-25 23:32:13 -0700[diff] [blame]54
55 return pte;
56}
57
Benjamin Herrenschmidt5e541972008-02-04 22:29:14 -0800[diff] [blame]58static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
Haavard Skinnemoen5f97f7f2006-09-25 23:32:13 -0700[diff] [blame]59{
60 free_page((unsigned long)pte);
61}
62
Benjamin Herrenschmidt5e541972008-02-04 22:29:14 -0800[diff] [blame]63static inline void pte_free(struct mm_struct *mm, struct page *pte)
Haavard Skinnemoen5f97f7f2006-09-25 23:32:13 -0700[diff] [blame]64{
65 __free_page(pte);
66}
67
68#define __pte_free_tlb(tlb,pte) tlb_remove_page((tlb),(pte))
69
70#define check_pgt_cache() do { } while(0)
71
72#endif /* __ASM_AVR32_PGALLOC_H */