mirror of https://gitee.com/openkylin/linux.git
60 lines
1.4 KiB
C
60 lines
1.4 KiB
C
#ifndef __ASM_SH_PGALLOC_H
|
|
#define __ASM_SH_PGALLOC_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)
|
|
{
|
|
return (pgd_t *)__get_free_page(GFP_KERNEL | __GFP_REPEAT | __GFP_ZERO);
|
|
}
|
|
|
|
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)
|
|
{
|
|
return (pte_t *)__get_free_page(GFP_KERNEL | __GFP_REPEAT | __GFP_ZERO);
|
|
}
|
|
|
|
static inline struct page *pte_alloc_one(struct mm_struct *mm,
|
|
unsigned long address)
|
|
{
|
|
return alloc_page(GFP_KERNEL | __GFP_REPEAT | __GFP_ZERO);
|
|
}
|
|
|
|
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_free(x) do { } while (0)
|
|
#define __pmd_free_tlb(tlb,x) do { } while (0)
|
|
#define check_pgt_cache() do { } while (0)
|
|
|
|
#endif /* __ASM_SH_PGALLOC_H */
|