75 lines
1.6 KiB
C
75 lines
1.6 KiB
C
|
#ifndef _ASM_M32R_PGALLOC_H
|
||
|
|
#define _ASM_M32R_PGALLOC_H
|
||
|
|
|
||
|
|
#include <linux/mm.h>
|
||
|
|
|
||
|
|
#include <asm/io.h>
|
||
|
|
|
||
|
|
#define pmd_populate_kernel(mm, pmd, pte) \
|
||
|
|
set_pmd(pmd, __pmd(_PAGE_TABLE + __pa(pte)))
|
||
|
|
|
||
|
|
static __inline__ void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
|
||
|
|
struct page *pte)
|
||
|
|
{
|
||
|
|
set_pmd(pmd, __pmd(_PAGE_TABLE + page_to_phys(pte)));
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Allocate and free page tables.
|
||
|
|
*/
|
||
|
|
static __inline__ pgd_t *pgd_alloc(struct mm_struct *mm)
|
||
|
|
{
|
||
|
|
pgd_t *pgd = (pgd_t *)__get_free_page(GFP_KERNEL|__GFP_ZERO);
|
||
|
|
|
||
|
|
return pgd;
|
||
|
|
}
|
||
|
|
|
||
|
|
static __inline__ void pgd_free(pgd_t *pgd)
|
||
|
|
{
|
||
|
|
free_page((unsigned long)pgd);
|
||
|
|
}
|
||
|
|
|
||
|
|
static __inline__ pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
|
||
|
|
unsigned long address)
|
||
|
|
{
|
||
|
|
pte_t *pte = (pte_t *)__get_free_page(GFP_KERNEL|__GFP_ZERO);
|
||
|
|
|
||
|
|
return pte;
|
||
|
|
}
|
||
|
|
|
||
|
|
static __inline__ struct page *pte_alloc_one(struct mm_struct *mm,
|
||
|
|
unsigned long address)
|
||
|
|
{
|
||
|
|
struct page *pte = alloc_page(GFP_KERNEL|__GFP_ZERO);
|
||
|
|
|
||
|
|
|
||
|
|
return pte;
|
||
|
|
}
|
||
|
|
|
||
|
|
static __inline__ void pte_free_kernel(pte_t *pte)
|
||
|
|
{
|
||
|
|
free_page((unsigned long)pte);
|
||
|
|
}
|
||
|
|
|
||
|
|
static __inline__ void pte_free(struct page *pte)
|
||
|
|
{
|
||
|
|
__free_page(pte);
|
||
|
|
}
|
||
|
|
|
||
|
|
#define __pte_free_tlb(tlb, pte) pte_free((pte))
|
||
|
|
|
||
|
|
/*
|
||
|
|
* allocating and freeing a pmd is trivial: the 1-entry pmd is
|
||
|
|
* inside the pgd, so has no extra memory associated with it.
|
||
|
|
* (In the PAE case we free the pmds as part of the pgd.)
|
||
|
|
*/
|
||
|
|
|
||
|
|
#define pmd_alloc_one(mm, addr) ({ BUG(); ((pmd_t *)2); })
|
||
|
|
#define pmd_free(x) do { } while (0)
|
||
|
|
#define __pmd_free_tlb(tlb, x) do { } while (0)
|
||
|
|
#define pgd_populate(mm, pmd, pte) BUG()
|
||
|
|
|
||
|
|
#define check_pgt_cache() do { } while (0)
|
||
|
|
|
||
|
|
#endif /* _ASM_M32R_PGALLOC_H */
|