forked from luck/tmp_suning_uos_patched
16dd07bc64
More trimming of the page fault path. Permissions are passed around in a single int rather than one bit per int. The permission values are copied from libc so that they can be passed to mmap and mprotect without any further conversion. The register sets used by do_syscall_stub and copy_context_skas0 are initialized once, at boot time, rather than once per call. wait_stub_done checks whether it is getting the signals it expects by comparing the wait status to a mask containing bits for the signals of interest rather than comparing individually to the signal numbers. It also has one check for a wait failure instead of two. The caller is expected to do the initial continue of the stub. This gets rid of an argument and some logic. The fname argument is gone, as that can be had from a stack trace. user_signal() is collapsed into userspace() as it is basically one or two lines of code afterwards. The physical memory remapping stuff is gone, as it is unused. flush_tlb_page is inlined. Signed-off-by: Jeff Dike <jdike@linux.intel.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
51 lines
1.4 KiB
C
51 lines
1.4 KiB
C
/*
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* Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
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* Licensed under the GPL
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*/
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#ifndef __UM_TLBFLUSH_H
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#define __UM_TLBFLUSH_H
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#include <linux/mm.h>
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#include "choose-mode.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 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_kernel_vm() flushes the kernel vm area
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* - flush_tlb_range(vma, 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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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_skas(struct vm_area_struct *vma,
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unsigned long address);
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static inline void flush_tlb_page(struct vm_area_struct *vma,
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unsigned long address)
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{
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address &= PAGE_MASK;
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CHOOSE_MODE(flush_tlb_range(vma, address, address + PAGE_SIZE),
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flush_tlb_page_skas(vma, address));
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}
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extern void flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr);
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extern void flush_tlb_kernel_vm(void);
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extern void flush_tlb_kernel_range(unsigned long start, unsigned long end);
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extern void __flush_tlb_one(unsigned long addr);
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static inline void flush_tlb_pgtables(struct mm_struct *mm,
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unsigned long start, unsigned long end)
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{
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}
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#endif
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