92 lines
1.8 KiB
C
92 lines
1.8 KiB
C
|
#ifndef _ALPHA_PGALLOC_H
|
||
|
|
#define _ALPHA_PGALLOC_H
|
||
|
|
|
||
|
|
#include <linux/mm.h>
|
||
|
|
#include <linux/mmzone.h>
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Allocate and free page tables. The xxx_kernel() versions are
|
||
|
|
* used to allocate a kernel page table - this turns on ASN bits
|
||
|
|
* if any.
|
||
|
|
*/
|
||
|
|
|
||
|
|
static inline void
|
||
|
|
pmd_populate(struct mm_struct *mm, pmd_t *pmd, pgtable_t pte)
|
||
|
|
{
|
||
|
|
pmd_set(pmd, (pte_t *)(page_to_pa(pte) + PAGE_OFFSET));
|
||
|
|
}
|
||
|
|
#define pmd_pgtable(pmd) pmd_page(pmd)
|
||
|
|
|
||
|
|
static inline void
|
||
|
|
pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte)
|
||
|
|
{
|
||
|
|
pmd_set(pmd, pte);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void
|
||
|
|
pgd_populate(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmd)
|
||
|
|
{
|
||
|
|
pgd_set(pgd, pmd);
|
||
|
|
}
|
||
|
|
|
||
|
|
extern pgd_t *pgd_alloc(struct mm_struct *mm);
|
||
|
|
|
||
|
|
static inline void
|
||
|
|
pgd_free(struct mm_struct *mm, pgd_t *pgd)
|
||
|
|
{
|
||
|
|
free_page((unsigned long)pgd);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline pmd_t *
|
||
|
|
pmd_alloc_one(struct mm_struct *mm, unsigned long address)
|
||
|
|
{
|
||
|
|
pmd_t *ret = (pmd_t *)__get_free_page(GFP_KERNEL|__GFP_ZERO);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void
|
||
|
|
pmd_free(struct mm_struct *mm, pmd_t *pmd)
|
||
|
|
{
|
||
|
|
free_page((unsigned long)pmd);
|
||
|
|
}
|
||
|
|
|
||
|
|
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 void
|
||
|
|
pte_free_kernel(struct mm_struct *mm, pte_t *pte)
|
||
|
|
{
|
||
|
|
free_page((unsigned long)pte);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline pgtable_t
|
||
|
|
pte_alloc_one(struct mm_struct *mm, unsigned long address)
|
||
|
|
{
|
||
|
|
pte_t *pte = pte_alloc_one_kernel(mm, address);
|
||
|
|
struct page *page;
|
||
|
|
|
||
|
|
if (!pte)
|
||
|
|
return NULL;
|
||
|
|
page = virt_to_page(pte);
|
||
|
|
if (!pgtable_page_ctor(page)) {
|
||
|
|
__free_page(page);
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
return page;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void
|
||
|
|
pte_free(struct mm_struct *mm, pgtable_t page)
|
||
|
|
{
|
||
|
|
pgtable_page_dtor(page);
|
||
|
|
__free_page(page);
|
||
|
|
}
|
||
|
|
|
||
|
|
#define check_pgt_cache() do { } while (0)
|
||
|
|
|
||
|
|
#endif /* _ALPHA_PGALLOC_H */
|