65 lines
1.4 KiB
C
65 lines
1.4 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _CRIS_PGALLOC_H
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#define _CRIS_PGALLOC_H
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#include <linux/threads.h>
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#include <linux/mm.h>
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#define pmd_populate_kernel(mm, pmd, pte) pmd_set(pmd, pte)
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#define pmd_populate(mm, pmd, pte) pmd_set(pmd, page_address(pte))
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#define pmd_pgtable(pmd) pmd_page(pmd)
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/*
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* Allocate and free page tables.
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*/
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static inline pgd_t *pgd_alloc (struct mm_struct *mm)
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{
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return (pgd_t *)get_zeroed_page(GFP_KERNEL);
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}
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static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
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{
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free_page((unsigned long)pgd);
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}
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static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
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{
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pte_t *pte = (pte_t *)__get_free_page(GFP_KERNEL|__GFP_ZERO);
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return pte;
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}
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static inline pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long address)
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{
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struct page *pte;
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pte = alloc_pages(GFP_KERNEL|__GFP_ZERO, 0);
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if (!pte)
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return NULL;
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if (!pgtable_page_ctor(pte)) {
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__free_page(pte);
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return NULL;
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}
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return pte;
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}
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static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
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{
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free_page((unsigned long)pte);
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}
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static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
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{
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pgtable_page_dtor(pte);
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__free_page(pte);
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}
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#define __pte_free_tlb(tlb,pte,address) \
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do { \
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pgtable_page_dtor(pte); \
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tlb_remove_page((tlb), pte); \
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} while (0)
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#define check_pgt_cache() do { } while (0)
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#endif
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