75 lines
2.0 KiB
C
75 lines
2.0 KiB
C
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/*
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* Based on arch/arm/include/asm/tlb.h
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*
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* Copyright (C) 2002 Russell King
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* Copyright (C) 2012 ARM Ltd.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __ASM_TLB_H
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#define __ASM_TLB_H
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#include <linux/pagemap.h>
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#include <linux/swap.h>
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#ifdef CONFIG_HAVE_RCU_TABLE_FREE
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#define tlb_remove_entry(tlb, entry) tlb_remove_table(tlb, entry)
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static inline void __tlb_remove_table(void *_table)
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{
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free_page_and_swap_cache((struct page *)_table);
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}
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#else
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#define tlb_remove_entry(tlb, entry) tlb_remove_page(tlb, entry)
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#endif /* CONFIG_HAVE_RCU_TABLE_FREE */
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#include <asm-generic/tlb.h>
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static inline void tlb_flush(struct mmu_gather *tlb)
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{
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if (tlb->fullmm) {
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flush_tlb_mm(tlb->mm);
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} else {
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struct vm_area_struct vma = { .vm_mm = tlb->mm, };
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flush_tlb_range(&vma, tlb->start, tlb->end);
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}
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}
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static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t pte,
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unsigned long addr)
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{
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__flush_tlb_pgtable(tlb->mm, addr);
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pgtable_page_dtor(pte);
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tlb_remove_entry(tlb, pte);
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}
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#if CONFIG_PGTABLE_LEVELS > 2
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static inline void __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmdp,
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unsigned long addr)
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{
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__flush_tlb_pgtable(tlb->mm, addr);
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tlb_remove_entry(tlb, virt_to_page(pmdp));
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}
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#endif
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#if CONFIG_PGTABLE_LEVELS > 3
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static inline void __pud_free_tlb(struct mmu_gather *tlb, pud_t *pudp,
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unsigned long addr)
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{
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__flush_tlb_pgtable(tlb->mm, addr);
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tlb_remove_entry(tlb, virt_to_page(pudp));
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}
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#endif
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#endif
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