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492e675116
Rename __flush_tlb*() to local_flush_tlb*() as it's more appropriate, and ready to differentiate local from global TLB flushes when SMP is introduced. Whilst we're at it, get rid of __flush_tlb_global() and make local_flush_tlb_page() take an mm_struct pointer rather than VMA pointer. Signed-off-by: David Howells <dhowells@redhat.com>
95 lines
2.5 KiB
C
95 lines
2.5 KiB
C
/* MN10300 TLB flushing functions
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*
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* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
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* Written by David Howells (dhowells@redhat.com)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public Licence
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* as published by the Free Software Foundation; either version
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* 2 of the Licence, or (at your option) any later version.
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*/
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#ifndef _ASM_TLBFLUSH_H
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#define _ASM_TLBFLUSH_H
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#include <asm/processor.h>
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/**
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* local_flush_tlb - Flush the current MM's entries from the local CPU's TLBs
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*/
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static inline void local_flush_tlb(void)
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{
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int w;
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asm volatile(
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" mov %1,%0 \n"
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" or %2,%0 \n"
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" mov %0,%1 \n"
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: "=d"(w)
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: "m"(MMUCTR), "i"(MMUCTR_IIV|MMUCTR_DIV)
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: "cc", "memory");
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}
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/**
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* local_flush_tlb_all - Flush all entries from the local CPU's TLBs
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*/
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#define local_flush_tlb_all() local_flush_tlb()
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/**
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* local_flush_tlb_one - Flush one entry from the local CPU's TLBs
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*/
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#define local_flush_tlb_one(addr) local_flush_tlb()
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/**
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* local_flush_tlb_page - Flush a page's entry from the local CPU's TLBs
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* @mm: The MM to flush for
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* @addr: The address of the target page in RAM (not its page struct)
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*/
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extern void local_flush_tlb_page(struct mm_struct *mm, unsigned long addr);
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/*
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* TLB flushing:
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*
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* - flush_tlb() flushes the current mm struct TLBs
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* - flush_tlb_all() flushes all processes TLBs
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* - flush_tlb_mm(mm) flushes the specified mm context TLB's
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* - flush_tlb_page(vma, vmaddr) flushes one page
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* - flush_tlb_range(mm, start, end) flushes a range of pages
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* - flush_tlb_pgtables(mm, start, end) flushes a range of page tables
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*/
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#define flush_tlb_all() \
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do { \
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preempt_disable(); \
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local_flush_tlb_all(); \
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preempt_enable(); \
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} while (0)
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#define flush_tlb_mm(mm) \
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do { \
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preempt_disable(); \
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local_flush_tlb_all(); \
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preempt_enable(); \
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} while (0)
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#define flush_tlb_range(vma, start, end) \
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do { \
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unsigned long __s __attribute__((unused)) = (start); \
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unsigned long __e __attribute__((unused)) = (end); \
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preempt_disable(); \
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local_flush_tlb_all(); \
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preempt_enable(); \
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} while (0)
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#define flush_tlb_page(vma, addr) local_flush_tlb_page((vma)->vm_mm, addr)
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#define flush_tlb() flush_tlb_all()
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#define flush_tlb_kernel_range(start, end) \
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do { \
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unsigned long __s __attribute__((unused)) = (start); \
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unsigned long __e __attribute__((unused)) = (end); \
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flush_tlb_all(); \
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} while (0)
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#define flush_tlb_pgtables(mm, start, end) do {} while (0)
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#endif /* _ASM_TLBFLUSH_H */
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