1/*
 2 * This file is subject to the terms and conditions of the GNU General Public
 3 * License.  See the file "COPYING" in the main directory of this archive
 4 * for more details.
 5 *
 6 * Copyright (C) 1994 - 2001, 2003 by Ralf Baechle
 7 * Copyright (C) 1999, 2000, 2001 Silicon Graphics, Inc.
 8 */
 9#ifndef _ASM_PGALLOC_H
10#define _ASM_PGALLOC_H
11
12#include <linux/highmem.h>
13#include <linux/mm.h>
14#include <linux/sched.h>
15
16#define __HAVE_ARCH_PMD_ALLOC_ONE
17#define __HAVE_ARCH_PUD_ALLOC_ONE
18#include <asm-generic/pgalloc.h>
19
20static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd,
21	pte_t *pte)
22{
23	set_pmd(pmd, __pmd((unsigned long)pte));
24}
25
26static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
27	pgtable_t pte)
28{
29	set_pmd(pmd, __pmd((unsigned long)page_address(pte)));
30}
31#define pmd_pgtable(pmd) pmd_page(pmd)
32
33/*
34 * Initialize a new pmd table with invalid pointers.
35 */
36extern void pmd_init(unsigned long page, unsigned long pagetable);
37
38#ifndef __PAGETABLE_PMD_FOLDED
39
40static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
41{
42	set_pud(pud, __pud((unsigned long)pmd));
43}
44#endif
45
46/*
47 * Initialize a new pgd / pmd table with invalid pointers.
48 */
49extern void pgd_init(unsigned long page);
50extern pgd_t *pgd_alloc(struct mm_struct *mm);
51
52#define __pte_free_tlb(tlb,pte,address)			\
53do {							\
54	pgtable_pte_page_dtor(pte);			\
55	tlb_remove_page((tlb), pte);			\
56} while (0)
57
58#ifndef __PAGETABLE_PMD_FOLDED
59
60static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
61{
62	pmd_t *pmd;
 
63
64	pmd = (pmd_t *) __get_free_pages(GFP_KERNEL, PMD_ORDER);
65	if (pmd)
66		pmd_init((unsigned long)pmd, (unsigned long)invalid_pte_table);
 
 
 
 
 
 
 
 
67	return pmd;
68}
69
70#define __pmd_free_tlb(tlb, x, addr)	pmd_free((tlb)->mm, x)
71
72#endif
73
74#ifndef __PAGETABLE_PUD_FOLDED
75
76static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long address)
77{
78	pud_t *pud;
79
80	pud = (pud_t *) __get_free_pages(GFP_KERNEL, PUD_ORDER);
81	if (pud)
82		pud_init((unsigned long)pud, (unsigned long)invalid_pmd_table);
83	return pud;
84}
85
86static inline void p4d_populate(struct mm_struct *mm, p4d_t *p4d, pud_t *pud)
87{
88	set_p4d(p4d, __p4d((unsigned long)pud));
89}
90
91#define __pud_free_tlb(tlb, x, addr)	pud_free((tlb)->mm, x)
92
93#endif /* __PAGETABLE_PUD_FOLDED */
94
95extern void pagetable_init(void);
96
97#endif /* _ASM_PGALLOC_H */

  1/*
  2 * This file is subject to the terms and conditions of the GNU General Public
  3 * License.  See the file "COPYING" in the main directory of this archive
  4 * for more details.
  5 *
  6 * Copyright (C) 1994 - 2001, 2003 by Ralf Baechle
  7 * Copyright (C) 1999, 2000, 2001 Silicon Graphics, Inc.
  8 */
  9#ifndef _ASM_PGALLOC_H
 10#define _ASM_PGALLOC_H
 11
 12#include <linux/highmem.h>
 13#include <linux/mm.h>
 14#include <linux/sched.h>
 15
 16#define __HAVE_ARCH_PMD_ALLOC_ONE
 17#define __HAVE_ARCH_PUD_ALLOC_ONE
 18#include <asm-generic/pgalloc.h>
 19
 20static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd,
 21	pte_t *pte)
 22{
 23	set_pmd(pmd, __pmd((unsigned long)pte));
 24}
 25
 26static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
 27	pgtable_t pte)
 28{
 29	set_pmd(pmd, __pmd((unsigned long)page_address(pte)));
 30}
 
 31
 32/*
 33 * Initialize a new pmd table with invalid pointers.
 34 */
 35extern void pmd_init(unsigned long page, unsigned long pagetable);
 36
 37#ifndef __PAGETABLE_PMD_FOLDED
 38
 39static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
 40{
 41	set_pud(pud, __pud((unsigned long)pmd));
 42}
 43#endif
 44
 45/*
 46 * Initialize a new pgd / pmd table with invalid pointers.
 47 */
 48extern void pgd_init(unsigned long page);
 49extern pgd_t *pgd_alloc(struct mm_struct *mm);
 50
 51#define __pte_free_tlb(tlb,pte,address)			\
 52do {							\
 53	pgtable_pte_page_dtor(pte);			\
 54	tlb_remove_page((tlb), pte);			\
 55} while (0)
 56
 57#ifndef __PAGETABLE_PMD_FOLDED
 58
 59static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
 60{
 61	pmd_t *pmd;
 62	struct page *pg;
 63
 64	pg = alloc_pages(GFP_KERNEL_ACCOUNT, PMD_ORDER);
 65	if (!pg)
 66		return NULL;
 67
 68	if (!pgtable_pmd_page_ctor(pg)) {
 69		__free_pages(pg, PMD_ORDER);
 70		return NULL;
 71	}
 72
 73	pmd = (pmd_t *)page_address(pg);
 74	pmd_init((unsigned long)pmd, (unsigned long)invalid_pte_table);
 75	return pmd;
 76}
 77
 78#define __pmd_free_tlb(tlb, x, addr)	pmd_free((tlb)->mm, x)
 79
 80#endif
 81
 82#ifndef __PAGETABLE_PUD_FOLDED
 83
 84static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long address)
 85{
 86	pud_t *pud;
 87
 88	pud = (pud_t *) __get_free_pages(GFP_KERNEL, PUD_ORDER);
 89	if (pud)
 90		pud_init((unsigned long)pud, (unsigned long)invalid_pmd_table);
 91	return pud;
 92}
 93
 94static inline void p4d_populate(struct mm_struct *mm, p4d_t *p4d, pud_t *pud)
 95{
 96	set_p4d(p4d, __p4d((unsigned long)pud));
 97}
 98
 99#define __pud_free_tlb(tlb, x, addr)	pud_free((tlb)->mm, x)
100
101#endif /* __PAGETABLE_PUD_FOLDED */
102
103extern void pagetable_init(void);
104
105#endif /* _ASM_PGALLOC_H */