/*
|
* This file is subject to the terms and conditions of the GNU General Public
|
* License. See the file "COPYING" in the main directory of this archive
|
* for more details.
|
*
|
* Copyright (C) 1994 - 2001, 2003 by Ralf Baechle
|
* Copyright (C) 1999, 2000, 2001 Silicon Graphics, Inc.
|
*/
|
#ifndef _ASM_PGALLOC_H
|
#define _ASM_PGALLOC_H
|
|
#include <linux/highmem.h>
|
#include <linux/mm.h>
|
#include <linux/sched.h>
|
|
#define __HAVE_ARCH_PMD_ALLOC_ONE
|
#define __HAVE_ARCH_PUD_ALLOC_ONE
|
#define __HAVE_ARCH_PGD_FREE
|
#include <asm-generic/pgalloc.h>
|
|
static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd,
|
pte_t *pte)
|
{
|
set_pmd(pmd, __pmd((unsigned long)pte));
|
}
|
|
static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
|
pgtable_t pte)
|
{
|
set_pmd(pmd, __pmd((unsigned long)page_address(pte)));
|
}
|
#define pmd_pgtable(pmd) pmd_page(pmd)
|
|
/*
|
* Initialize a new pmd table with invalid pointers.
|
*/
|
extern void pmd_init(unsigned long page, unsigned long pagetable);
|
|
#ifndef __PAGETABLE_PMD_FOLDED
|
|
static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
|
{
|
set_pud(pud, __pud((unsigned long)pmd));
|
}
|
#endif
|
|
/*
|
* Initialize a new pgd / pmd table with invalid pointers.
|
*/
|
extern void pgd_init(unsigned long page);
|
extern pgd_t *pgd_alloc(struct mm_struct *mm);
|
|
static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
|
{
|
free_pages((unsigned long)pgd, PGD_ORDER);
|
}
|
|
#define __pte_free_tlb(tlb,pte,address) \
|
do { \
|
pgtable_pte_page_dtor(pte); \
|
tlb_remove_page((tlb), pte); \
|
} while (0)
|
|
#ifndef __PAGETABLE_PMD_FOLDED
|
|
static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
|
{
|
pmd_t *pmd;
|
struct page *pg;
|
|
pg = alloc_pages(GFP_KERNEL_ACCOUNT, PMD_ORDER);
|
if (!pg)
|
return NULL;
|
|
if (!pgtable_pmd_page_ctor(pg)) {
|
__free_pages(pg, PMD_ORDER);
|
return NULL;
|
}
|
|
pmd = (pmd_t *)page_address(pg);
|
pmd_init((unsigned long)pmd, (unsigned long)invalid_pte_table);
|
return pmd;
|
}
|
|
#define __pmd_free_tlb(tlb, x, addr) pmd_free((tlb)->mm, x)
|
|
#endif
|
|
#ifndef __PAGETABLE_PUD_FOLDED
|
|
static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long address)
|
{
|
pud_t *pud;
|
|
pud = (pud_t *) __get_free_pages(GFP_KERNEL, PUD_ORDER);
|
if (pud)
|
pud_init((unsigned long)pud, (unsigned long)invalid_pmd_table);
|
return pud;
|
}
|
|
static inline void p4d_populate(struct mm_struct *mm, p4d_t *p4d, pud_t *pud)
|
{
|
set_p4d(p4d, __p4d((unsigned long)pud));
|
}
|
|
#define __pud_free_tlb(tlb, x, addr) pud_free((tlb)->mm, x)
|
|
#endif /* __PAGETABLE_PUD_FOLDED */
|
|
extern void pagetable_init(void);
|
|
#endif /* _ASM_PGALLOC_H */
|
