117 lines
2.5 KiB
C
117 lines
2.5 KiB
C
/*
|
|
* 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)));
|
|
}
|
|
|
|
/*
|
|
* Initialize a new pmd table with invalid pointers.
|
|
*/
|
|
extern void pmd_init(void *addr);
|
|
|
|
#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 table with invalid pointers.
|
|
*/
|
|
extern void pgd_init(void *addr);
|
|
extern pgd_t *pgd_alloc(struct mm_struct *mm);
|
|
|
|
static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
|
|
{
|
|
pagetable_free(virt_to_ptdesc(pgd));
|
|
}
|
|
|
|
#define __pte_free_tlb(tlb, pte, address) \
|
|
do { \
|
|
pagetable_pte_dtor(page_ptdesc(pte)); \
|
|
tlb_remove_page_ptdesc((tlb), page_ptdesc(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 ptdesc *ptdesc;
|
|
|
|
ptdesc = pagetable_alloc(GFP_KERNEL_ACCOUNT, PMD_TABLE_ORDER);
|
|
if (!ptdesc)
|
|
return NULL;
|
|
|
|
if (!pagetable_pmd_ctor(ptdesc)) {
|
|
pagetable_free(ptdesc);
|
|
return NULL;
|
|
}
|
|
|
|
pmd = ptdesc_address(ptdesc);
|
|
pmd_init(pmd);
|
|
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;
|
|
struct ptdesc *ptdesc = pagetable_alloc(GFP_KERNEL & ~__GFP_HIGHMEM,
|
|
PUD_TABLE_ORDER);
|
|
|
|
if (!ptdesc)
|
|
return NULL;
|
|
pagetable_pud_ctor(ptdesc);
|
|
pud = ptdesc_address(ptdesc);
|
|
|
|
pud_init(pud);
|
|
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 */
|