forked from luck/tmp_suning_uos_patched
8d20a541b0
Patches to support SMP. * Each CPU has its own current_pgd. * flush_tlb_range is implemented as flush_tlb_mm. * Atomic operations implemented with spinlocks. * Semaphores implemented with spinlocks. Signed-off-by: Mikael Starvik <starvik@axis.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
57 lines
1.5 KiB
C
57 lines
1.5 KiB
C
#ifndef _CRIS_TLBFLUSH_H
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#define _CRIS_TLBFLUSH_H
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#include <linux/config.h>
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#include <linux/mm.h>
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#include <asm/processor.h>
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#include <asm/pgtable.h>
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#include <asm/pgalloc.h>
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/*
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* TLB flushing (implemented in arch/cris/mm/tlb.c):
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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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*
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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_page(struct vm_area_struct *vma,
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unsigned long addr);
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#ifdef CONFIG_SMP
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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_page(struct vm_area_struct *vma,
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unsigned long addr);
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#else
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#define flush_tlb_all __flush_tlb_all
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#define flush_tlb_mm __flush_tlb_mm
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#define flush_tlb_page __flush_tlb_page
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#endif
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static inline void flush_tlb_range(struct vm_area_struct * vma, unsigned long start, unsigned long end)
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{
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flush_tlb_mm(vma->vm_mm);
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}
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extern 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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/* CRIS does not keep any page table caches in TLB */
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}
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extern inline void flush_tlb(void)
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{
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flush_tlb_mm(current->mm);
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}
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#define flush_tlb_kernel_range(start, end) flush_tlb_all()
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#endif /* _CRIS_TLBFLUSH_H */
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