1/* 2 * Based on arch/arm/include/asm/tlb.h 3 * 4 * Copyright (C) 2002 Russell King 5 * Copyright (C) 2012 ARM Ltd. 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License version 2 as 9 * published by the Free Software Foundation. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program. If not, see <http://www.gnu.org/licenses/>. 18 */ 19#ifndef __ASM_TLB_H 20#define __ASM_TLB_H 21 22#include <linux/pagemap.h> 23#include <linux/swap.h> 24 25#ifdef CONFIG_HAVE_RCU_TABLE_FREE 26 27#define tlb_remove_entry(tlb, entry) tlb_remove_table(tlb, entry) 28static inline void __tlb_remove_table(void *_table) 29{ 30 free_page_and_swap_cache((struct page *)_table); 31} 32#else 33#define tlb_remove_entry(tlb, entry) tlb_remove_page(tlb, entry) 34#endif /* CONFIG_HAVE_RCU_TABLE_FREE */ 35 36#include <asm-generic/tlb.h> 37 38static inline void tlb_flush(struct mmu_gather *tlb) 39{ 40 if (tlb->fullmm) { 41 flush_tlb_mm(tlb->mm); 42 } else { 43 struct vm_area_struct vma = { .vm_mm = tlb->mm, }; 44 flush_tlb_range(&vma, tlb->start, tlb->end); 45 } 46} 47 48static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t pte, 49 unsigned long addr) 50{ 51 __flush_tlb_pgtable(tlb->mm, addr); 52 pgtable_page_dtor(pte); 53 tlb_remove_entry(tlb, pte); 54} 55 56#if CONFIG_PGTABLE_LEVELS > 2 57static inline void __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmdp, 58 unsigned long addr) 59{ 60 __flush_tlb_pgtable(tlb->mm, addr); 61 tlb_remove_entry(tlb, virt_to_page(pmdp)); 62} 63#endif 64 65#if CONFIG_PGTABLE_LEVELS > 3 66static inline void __pud_free_tlb(struct mmu_gather *tlb, pud_t *pudp, 67 unsigned long addr) 68{ 69 __flush_tlb_pgtable(tlb->mm, addr); 70 tlb_remove_entry(tlb, virt_to_page(pudp)); 71} 72#endif 73 74#endif 75