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ef0fce8556
frv is the last user in the tree of that dubious hook, and it's my understanding that it's not even needed. It's only called by memory.c free_pgd_range() which is always called within an mmu_gather, and tlb_flush() on frv will do a flush_tlb_mm(), which from my reading of the code, seems to do what flush_tlb_ptables() does, which is to clear the cached PGE. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-By: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
75 lines
2 KiB
C
75 lines
2 KiB
C
/* tlbflush.h: TLB flushing functions
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*
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* Copyright (C) 2004 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 License
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* as published by the Free Software Foundation; either version
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* 2 of the License, 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 <linux/mm.h>
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#include <asm/processor.h>
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#ifdef CONFIG_MMU
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#ifndef __ASSEMBLY__
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extern void asmlinkage __flush_tlb_all(void);
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extern void asmlinkage __flush_tlb_mm(unsigned long contextid);
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extern void asmlinkage __flush_tlb_page(unsigned long contextid, unsigned long start);
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extern void asmlinkage __flush_tlb_range(unsigned long contextid,
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unsigned long start, unsigned long end);
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#endif /* !__ASSEMBLY__ */
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#define flush_tlb_all() \
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do { \
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preempt_disable(); \
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__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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__flush_tlb_mm((mm)->context.id); \
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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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preempt_disable(); \
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__flush_tlb_range((vma)->vm_mm->context.id, start, end); \
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preempt_enable(); \
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} while(0)
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#define flush_tlb_page(vma,addr) \
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do { \
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preempt_disable(); \
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__flush_tlb_page((vma)->vm_mm->context.id, addr); \
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preempt_enable(); \
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} while(0)
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#define __flush_tlb_global() flush_tlb_all()
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#define flush_tlb() flush_tlb_all()
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#define flush_tlb_kernel_range(start, end) flush_tlb_all()
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#define flush_tlb_pgtables(mm,start,end) do { } while(0)
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#else
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#define flush_tlb() BUG()
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#define flush_tlb_all() BUG()
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#define flush_tlb_mm(mm) BUG()
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#define flush_tlb_page(vma,addr) BUG()
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#define flush_tlb_range(mm,start,end) BUG()
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#define flush_tlb_pgtables(mm,start,end) BUG()
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#define flush_tlb_kernel_range(start, end) BUG()
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#endif
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#endif /* _ASM_TLBFLUSH_H */
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