projects / thirdparty / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 1da177e4 LT |
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)) | |
| 2f569afd | 10 | #define pmd_pgtable(pmd) pmd_page(pmd) |
| 1da177e4 LT |
11 | |
| 12 | /* | |
| 13 | * Allocate and free page tables. | |
| 14 | */ | |
| 15 | ||
| d9b5444e | 16 | static inline pgd_t *pgd_alloc (struct mm_struct *mm) |
| 1da177e4 LT |
17 | { |
| 18 | return (pgd_t *)get_zeroed_page(GFP_KERNEL); | |
| 19 | } | |
| 20 | ||
| 5e541973 | 21 | static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd) |
| 1da177e4 LT |
22 | { |
| 23 | free_page((unsigned long)pgd); | |
| 24 | } | |
| 25 | ||
| d9b5444e | 26 | static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address) |
| 1da177e4 | 27 | { |
| 32d6bd90 | 28 | pte_t *pte = (pte_t *)__get_free_page(GFP_KERNEL|__GFP_ZERO); |
| 1da177e4 LT |
29 | return pte; |
| 30 | } | |
| 31 | ||
| 2f569afd | 32 | static inline pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long address) |
| 1da177e4 LT |
33 | { |
| 34 | struct page *pte; | |
| 32d6bd90 | 35 | pte = alloc_pages(GFP_KERNEL|__GFP_ZERO, 0); |
| 26db3902 KS |
36 | if (!pte) |
| 37 | return NULL; | |
| 0da5303b KS |
38 | if (!pgtable_page_ctor(pte)) { |
| 39 | __free_page(pte); | |
| 40 | return NULL; | |
| 41 | } | |
| 1da177e4 LT |
42 | return pte; |
| 43 | } | |
| 44 | ||
| 5e541973 | 45 | static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte) |
| 1da177e4 LT |
46 | { |
| 47 | free_page((unsigned long)pte); | |
| 48 | } | |
| 49 | ||
| 2f569afd | 50 | static inline void pte_free(struct mm_struct *mm, pgtable_t pte) |
| 1da177e4 | 51 | { |
| 2f569afd | 52 | pgtable_page_dtor(pte); |
| 1da177e4 LT |
53 | __free_page(pte); |
| 54 | } | |
| 55 | ||
| 9e1b32ca | 56 | #define __pte_free_tlb(tlb,pte,address) \ |
| 2f569afd MS |
57 | do { \ |
| 58 | pgtable_page_dtor(pte); \ | |
| 59 | tlb_remove_page((tlb), pte); \ | |
| 60 | } while (0) | |
| 1da177e4 | 61 | |
| 1da177e4 LT |
62 | #define check_pgt_cache() do { } while (0) |
| 63 | ||
| 64 | #endif |