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v4.6
  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
 
 
 
 
 
 16static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd,
 17	pte_t *pte)
 18{
 19	set_pmd(pmd, __pmd((unsigned long)pte));
 20}
 21
 22static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
 23	pgtable_t pte)
 24{
 25	set_pmd(pmd, __pmd((unsigned long)page_address(pte)));
 26}
 27#define pmd_pgtable(pmd) pmd_page(pmd)
 28
 29/*
 30 * Initialize a new pmd table with invalid pointers.
 31 */
 32extern void pmd_init(unsigned long page, unsigned long pagetable);
 33
 34#ifndef __PAGETABLE_PMD_FOLDED
 35
 36static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
 37{
 38	set_pud(pud, __pud((unsigned long)pmd));
 39}
 40#endif
 41
 42/*
 43 * Initialize a new pgd / pmd table with invalid pointers.
 44 */
 45extern void pgd_init(unsigned long page);
 46
 47static inline pgd_t *pgd_alloc(struct mm_struct *mm)
 48{
 49	pgd_t *ret, *init;
 50
 51	ret = (pgd_t *) __get_free_pages(GFP_KERNEL, PGD_ORDER);
 52	if (ret) {
 53		init = pgd_offset(&init_mm, 0UL);
 54		pgd_init((unsigned long)ret);
 55		memcpy(ret + USER_PTRS_PER_PGD, init + USER_PTRS_PER_PGD,
 56		       (PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t));
 57	}
 58
 59	return ret;
 60}
 61
 62static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
 63{
 64	free_pages((unsigned long)pgd, PGD_ORDER);
 65}
 66
 67static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
 68	unsigned long address)
 69{
 70	pte_t *pte;
 71
 72	pte = (pte_t *) __get_free_pages(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO, PTE_ORDER);
 73
 74	return pte;
 75}
 76
 77static inline struct page *pte_alloc_one(struct mm_struct *mm,
 78	unsigned long address)
 79{
 80	struct page *pte;
 
 81
 82	pte = alloc_pages(GFP_KERNEL | __GFP_REPEAT, PTE_ORDER);
 83	if (!pte)
 84		return NULL;
 85	clear_highpage(pte);
 86	if (!pgtable_page_ctor(pte)) {
 87		__free_page(pte);
 88		return NULL;
 89	}
 90	return pte;
 91}
 92
 93static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
 94{
 95	free_pages((unsigned long)pte, PTE_ORDER);
 96}
 97
 98static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
 99{
100	pgtable_page_dtor(pte);
101	__free_pages(pte, PTE_ORDER);
102}
103
104#define __pte_free_tlb(tlb,pte,address)			\
105do {							\
106	pgtable_page_dtor(pte);				\
107	tlb_remove_page((tlb), pte);			\
108} while (0)
109
110#ifndef __PAGETABLE_PMD_FOLDED
111
112static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
113{
114	pmd_t *pmd;
 
 
115
116	pmd = (pmd_t *) __get_free_pages(GFP_KERNEL|__GFP_REPEAT, PMD_ORDER);
117	if (pmd)
118		pmd_init((unsigned long)pmd, (unsigned long)invalid_pte_table);
119	return pmd;
 
 
 
120}
121
122static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
123{
124	free_pages((unsigned long)pmd, PMD_ORDER);
125}
126
127#define __pmd_free_tlb(tlb, x, addr)	pmd_free((tlb)->mm, x)
128
129#endif
130
131#define check_pgt_cache()	do { } while (0)
132
133extern void pagetable_init(void);
134
135#endif /* _ASM_PGALLOC_H */
v6.13.7
  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#define __HAVE_ARCH_PGD_FREE
 19#include <asm-generic/pgalloc.h>
 20
 21static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd,
 22	pte_t *pte)
 23{
 24	set_pmd(pmd, __pmd((unsigned long)pte));
 25}
 26
 27static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
 28	pgtable_t pte)
 29{
 30	set_pmd(pmd, __pmd((unsigned long)page_address(pte)));
 31}
 
 32
 33/*
 34 * Initialize a new pmd table with invalid pointers.
 35 */
 36extern void pmd_init(void *addr);
 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 table with invalid pointers.
 48 */
 49extern void pgd_init(void *addr);
 50extern pgd_t *pgd_alloc(struct mm_struct *mm);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 51
 52static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
 53{
 54	pagetable_free(virt_to_ptdesc(pgd));
 55}
 56
 57#define __pte_free_tlb(tlb, pte, address)			\
 58do {								\
 59	pagetable_pte_dtor(page_ptdesc(pte));			\
 60	tlb_remove_page_ptdesc((tlb), page_ptdesc(pte));	\
 61} while (0)
 
 62
 63#ifndef __PAGETABLE_PMD_FOLDED
 
 64
 65static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
 
 66{
 67	pmd_t *pmd;
 68	struct ptdesc *ptdesc;
 69
 70	ptdesc = pagetable_alloc(GFP_KERNEL_ACCOUNT, PMD_TABLE_ORDER);
 71	if (!ptdesc)
 72		return NULL;
 73
 74	if (!pagetable_pmd_ctor(ptdesc)) {
 75		pagetable_free(ptdesc);
 76		return NULL;
 77	}
 
 
 78
 79	pmd = ptdesc_address(ptdesc);
 80	pmd_init(pmd);
 81	return pmd;
 82}
 83
 84#define __pmd_free_tlb(tlb, x, addr)	pmd_free((tlb)->mm, x)
 
 
 
 
 85
 86#endif
 
 
 
 
 87
 88#ifndef __PAGETABLE_PUD_FOLDED
 89
 90static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long address)
 91{
 92	pud_t *pud;
 93	struct ptdesc *ptdesc = pagetable_alloc(GFP_KERNEL & ~__GFP_HIGHMEM,
 94			PUD_TABLE_ORDER);
 95
 96	if (!ptdesc)
 97		return NULL;
 98	pagetable_pud_ctor(ptdesc);
 99	pud = ptdesc_address(ptdesc);
100
101	pud_init(pud);
102	return pud;
103}
104
105static inline void p4d_populate(struct mm_struct *mm, p4d_t *p4d, pud_t *pud)
106{
107	set_p4d(p4d, __p4d((unsigned long)pud));
108}
109
110#define __pud_free_tlb(tlb, x, addr)	pud_free((tlb)->mm, x)
 
 
111
112#endif /* __PAGETABLE_PUD_FOLDED */
113
114extern void pagetable_init(void);
115
116#endif /* _ASM_PGALLOC_H */