1 #ifndef _CRIS_PGALLOC_H
2 #define _CRIS_PGALLOC_H
3
4 #include <linux/threads.h>
5 #include <linux/mm.h>
6
7 #define pmd_populate_kernel(mm, pmd, pte) pmd_set(pmd, pte)
8 #define pmd_populate(mm, pmd, pte) pmd_set(pmd, page_address(pte))
9 #define pmd_pgtable(pmd) pmd_page(pmd)
10
11 /*
12 * Allocate and free page tables.
13 */
14
pgd_alloc(struct mm_struct * mm)15 static inline pgd_t *pgd_alloc (struct mm_struct *mm)
16 {
17 return (pgd_t *)get_zeroed_page(GFP_KERNEL);
18 }
19
pgd_free(struct mm_struct * mm,pgd_t * pgd)20 static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
21 {
22 free_page((unsigned long)pgd);
23 }
24
pte_alloc_one_kernel(struct mm_struct * mm,unsigned long address)25 static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
26 {
27 pte_t *pte = (pte_t *)__get_free_page(GFP_KERNEL|__GFP_ZERO);
28 return pte;
29 }
30
pte_alloc_one(struct mm_struct * mm,unsigned long address)31 static inline pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long address)
32 {
33 struct page *pte;
34 pte = alloc_pages(GFP_KERNEL|__GFP_ZERO, 0);
35 if (!pte)
36 return NULL;
37 if (!pgtable_page_ctor(pte)) {
38 __free_page(pte);
39 return NULL;
40 }
41 return pte;
42 }
43
pte_free_kernel(struct mm_struct * mm,pte_t * pte)44 static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
45 {
46 free_page((unsigned long)pte);
47 }
48
pte_free(struct mm_struct * mm,pgtable_t pte)49 static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
50 {
51 pgtable_page_dtor(pte);
52 __free_page(pte);
53 }
54
55 #define __pte_free_tlb(tlb,pte,address) \
56 do { \
57 pgtable_page_dtor(pte); \
58 tlb_remove_page((tlb), pte); \
59 } while (0)
60
61 #define check_pgt_cache() do { } while (0)
62
63 #endif
64