Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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kernel
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linux
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
16static inline pgd_t *pgd_alloc (struct mm_struct *mm)
17{
18 return (pgd_t *)get_zeroed_page(GFP_KERNEL);
19}
20
21static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
22{
23 free_page((unsigned long)pgd);
24}
25
26static 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
32static 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
45static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
46{
47 free_page((unsigned long)pte);
48}
49
50static 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) \
57do { \
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