forked from Minki/linux
b13d618b44
This and the following patches aim to optimize the code dealing with
page tables and TLB operations. Each patch reduces the time it takes
to gzip a 16 MB file slightly, but I expect things like fork() and
mmap() will improve somewhat more.
This patch deals with the low-level TLB operations:
* Remove unused _TLBEHI_I define
* Use gcc builtins instead of inline assembly
* Remove a few unnecessary pipeline flushes and nops
* Introduce NR_TLB_ENTRIES define and use it instead of hardcoding it
to 32 a few places throughout the code.
* Use sysreg bitops instead of hardcoded shifts and masks
* Make a few needlessly global functions static
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
33 lines
1.1 KiB
C
33 lines
1.1 KiB
C
/*
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* Copyright (C) 2004-2006 Atmel Corporation
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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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#ifndef __ASM_AVR32_TLBFLUSH_H
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#define __ASM_AVR32_TLBFLUSH_H
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#include <asm/mmu.h>
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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' TLB entries
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* - flush_tlb_mm(mm) flushes the specified mm context TLBs
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* - flush_tlb_page(vma, vmaddr) flushes one page
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* - flush_tlb_range(vma, start, end) flushes a range of pages
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* - flush_tlb_kernel_range(start, end) flushes a range of kernel pages
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*/
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extern void flush_tlb(void);
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extern void flush_tlb_all(void);
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extern void flush_tlb_mm(struct mm_struct *mm);
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extern void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
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unsigned long end);
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extern void flush_tlb_page(struct vm_area_struct *vma, unsigned long page);
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extern void flush_tlb_kernel_range(unsigned long start, unsigned long end);
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#endif /* __ASM_AVR32_TLBFLUSH_H */
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