root/include/asm-m32r/pgalloc.h

INCLUDED FROM

DEFINITIONS

1. pmd_populate
2. pgd_alloc
3. pgd_free
4. pte_alloc_one_kernel
5. pte_alloc_one
6. pte_free_kernel
7. pte_free

#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,
        pgtable_t pte)
{
        set_pmd(pmd, __pmd(_PAGE_TABLE + page_to_phys(pte)));
}
#define pmd_pgtable(pmd) pmd_page(pmd)

/*
 * 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(struct mm_struct *mm, 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__ pgtable_t pte_alloc_one(struct mm_struct *mm,
        unsigned long address)
{
        struct page *pte = alloc_page(GFP_KERNEL|__GFP_ZERO);

        pgtable_page_ctor(pte);
        return pte;
}

static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
{
        free_page((unsigned long)pte);
}

static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
{
        pgtable_page_dtor(pte);
        __free_page(pte);
}

#define __pte_free_tlb(tlb, pte)        pte_free((tlb)->mm, (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(mm, 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 */