63 lines
1.4 KiB
C
63 lines
1.4 KiB
C
#ifndef _CRIS_PGALLOC_H
|
|
#define _CRIS_PGALLOC_H
|
|
|
|
#include <linux/threads.h>
|
|
#include <linux/mm.h>
|
|
|
|
#define pmd_populate_kernel(mm, pmd, pte) pmd_set(pmd, pte)
|
|
#define pmd_populate(mm, pmd, pte) pmd_set(pmd, page_address(pte))
|
|
#define pmd_pgtable(pmd) pmd_page(pmd)
|
|
|
|
/*
|
|
* Allocate and free page tables.
|
|
*/
|
|
|
|
static inline pgd_t *pgd_alloc (struct mm_struct *mm)
|
|
{
|
|
return (pgd_t *)get_zeroed_page(GFP_KERNEL);
|
|
}
|
|
|
|
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_REPEAT|__GFP_ZERO);
|
|
return pte;
|
|
}
|
|
|
|
static inline pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long address)
|
|
{
|
|
struct page *pte;
|
|
pte = alloc_pages(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO, 0);
|
|
if (!pte)
|
|
return NULL;
|
|
if (!pgtable_page_ctor(pte)) {
|
|
__free_page(pte);
|
|
return NULL;
|
|
}
|
|
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,address) \
|
|
do { \
|
|
pgtable_page_dtor(pte); \
|
|
tlb_remove_page((tlb), pte); \
|
|
} while (0)
|
|
|
|
#define check_pgt_cache() do { } while (0)
|
|
|
|
#endif
|