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#ifndef __ASM_SH_PGALLOC_H
#define __ASM_SH_PGALLOC_H
#include <linux/threads.h>
#include <linux/slab.h>
#include <linux/mm.h>
#define pgd_quicklist ((unsigned long *)0)
#define pmd_quicklist ((unsigned long *)0)
#define pte_quicklist ((unsigned long *)0)
#define pgtable_cache_size 0L
#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)
{
unsigned int pgd_size = (USER_PTRS_PER_PGD * sizeof(pgd_t));
pgd_t *pgd = (pgd_t *)kmalloc(pgd_size, GFP_KERNEL);
if (pgd)
memset(pgd, 0, pgd_size);
return pgd;
}
static inline void pgd_free(pgd_t *pgd)
{
kfree(pgd);
}
static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
unsigned long address)
{
pte_t *pte;
pte = (pte_t *) __get_free_page(GFP_KERNEL | __GFP_REPEAT | __GFP_ZERO);
return pte;
}
static inline struct page *pte_alloc_one(struct mm_struct *mm,
unsigned long address)
{
struct page *pte;
pte = alloc_pages(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO, 0);
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) tlb_remove_page((tlb),(pte))
/*
* allocating and freeing a pmd is trivial: the 1-entry pmd is
* inside the pgd, so has no extra memory associated with it.
*/
#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)
#ifdef CONFIG_CPU_SH4
#define PG_mapped PG_arch_1
#endif
#endif /* __ASM_SH_PGALLOC_H */
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