arch/um/kernel/tlb.c

   1 /*
   2  * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
   3  * Licensed under the GPL
   4  */
   5
   6 #include "linux/mm.h"
   7 #include "asm/page.h"
   8 #include "asm/pgalloc.h"
   9 #include "asm/tlbflush.h"
  10 #include "choose-mode.h"
  11 #include "mode_kern.h"
  12
  13 void flush_tlb_page(struct vm_area_struct *vma, unsigned long address)
  14 {
  15         address &= PAGE_MASK;
  16         flush_tlb_range(vma, address, address + PAGE_SIZE);
  17 }
  18
  19 void flush_tlb_all(void)
  20 {
  21         flush_tlb_mm(current->mm);
  22 }
  23
  24 void flush_tlb_kernel_range(unsigned long start, unsigned long end)
  25 {
  26         CHOOSE_MODE_PROC(flush_tlb_kernel_range_tt,
  27                          flush_tlb_kernel_range_skas, start, end);
  28 }
  29
  30 void flush_tlb_kernel_vm(void)
  31 {
  32         CHOOSE_MODE(flush_tlb_kernel_vm_tt(), flush_tlb_kernel_vm_skas());
  33 }
  34
  35 void __flush_tlb_one(unsigned long addr)
  36 {
  37         CHOOSE_MODE_PROC(__flush_tlb_one_tt, __flush_tlb_one_skas, addr);
  38 }
  39
  40 void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
  41                      unsigned long end)
  42 {
  43         CHOOSE_MODE_PROC(flush_tlb_range_tt, flush_tlb_range_skas, vma, start,
  44                          end);
  45 }
  46
  47 void flush_tlb_mm(struct mm_struct *mm)
  48 {
  49         CHOOSE_MODE_PROC(flush_tlb_mm_tt, flush_tlb_mm_skas, mm);
  50 }
  51
  52 void force_flush_all(void)
  53 {
  54         CHOOSE_MODE(force_flush_all_tt(), force_flush_all_skas());
  55 }
  56
  57 pgd_t *pgd_offset_proc(struct mm_struct *mm, unsigned long address)
  58 {
  59         return(pgd_offset(mm, address));
  60 }
  61
  62 pud_t *pud_offset_proc(pgd_t *pgd, unsigned long address)
  63 {
  64         return(pud_offset(pgd, address));
  65 }
  66
  67 pmd_t *pmd_offset_proc(pud_t *pud, unsigned long address)
  68 {
  69         return(pmd_offset(pud, address));
  70 }
  71
  72 pte_t *pte_offset_proc(pmd_t *pmd, unsigned long address)
  73 {
  74         return(pte_offset_kernel(pmd, address));
  75 }
  76
  77 pte_t *addr_pte(struct task_struct *task, unsigned long addr)
  78 {
  79         pgd_t *pgd = pgd_offset(task->mm, addr);
  80         pud_t *pud = pud_offset(pgd, addr);
  81         pmd_t *pmd = pmd_offset(pud, addr);
  82
  83         return(pte_offset_map(pmd, addr));
  84 }
  85
  86 /*
  87  * Overrides for Emacs so that we follow Linus's tabbing style.
  88  * Emacs will notice this stuff at the end of the file and automatically
  89  * adjust the settings for this buffer only.  This must remain at the end
  90  * of the file.
  91  * ---------------------------------------------------------------------------
  92  * Local variables:
  93  * c-file-style: "linux"
  94  * End:
  95  */