1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _CRIS_PGALLOC_H
3 #define _CRIS_PGALLOC_H
4
5 #include <linux/threads.h>
6 #include <linux/mm.h>
7
8 #define pmd_populate_kernel(mm, pmd, pte) pmd_set(pmd, pte)
9 #define pmd_populate(mm, pmd, pte) pmd_set(pmd, page_address(pte))
10 #define pmd_pgtable(pmd) pmd_page(pmd)
11
12 /*
13 * Allocate and free page tables.
14 */
15
pgd_alloc(struct mm_struct * mm)16 static inline pgd_t *pgd_alloc (struct mm_struct *mm)
17 {
18 return (pgd_t *)get_zeroed_page(GFP_KERNEL);
19 }
20
pgd_free(struct mm_struct * mm,pgd_t * pgd)21 static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
22 {
23 free_page((unsigned long)pgd);
24 }
25
pte_alloc_one_kernel(struct mm_struct * mm,unsigned long address)26 static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
27 {
28 pte_t *pte = (pte_t *)__get_free_page(GFP_KERNEL|__GFP_ZERO);
29 return pte;
30 }
31
pte_alloc_one(struct mm_struct * mm,unsigned long address)32 static inline pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long address)
33 {
34 struct page *pte;
35 pte = alloc_pages(GFP_KERNEL|__GFP_ZERO, 0);
36 if (!pte)
37 return NULL;
38 if (!pgtable_page_ctor(pte)) {
39 __free_page(pte);
40 return NULL;
41 }
42 return pte;
43 }
44
pte_free_kernel(struct mm_struct * mm,pte_t * pte)45 static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
46 {
47 free_page((unsigned long)pte);
48 }
49
pte_free(struct mm_struct * mm,pgtable_t pte)50 static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
51 {
52 pgtable_page_dtor(pte);
53 __free_page(pte);
54 }
55
56 #define __pte_free_tlb(tlb,pte,address) \
57 do { \
58 pgtable_page_dtor(pte); \
59 tlb_remove_page((tlb), pte); \
60 } while (0)
61
62 #define check_pgt_cache() do { } while (0)
63
64 #endif
65