x86/mm: Unify remote INVLPG code
There are currently three paths through the remote flush code: 1. full invalidation 2. single page invalidation using invlpg 3. ranged invalidation using invlpg This takes 2 and 3 and combines them in to a single path by making the single-page one just be the start and end be start plus a single page. This makes placement of our tracepoint easier. Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Link: http://lkml.kernel.org/r/20140731154058.E0F90408@viggo.jf.intel.com Cc: Rik van Riel <riel@redhat.com> Cc: Mel Gorman <mgorman@suse.de> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
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@ -102,13 +102,13 @@ static void flush_tlb_func(void *info)
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if (f->flush_mm != this_cpu_read(cpu_tlbstate.active_mm))
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return;
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if (!f->flush_end)
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f->flush_end = f->flush_start + PAGE_SIZE;
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count_vm_tlb_event(NR_TLB_REMOTE_FLUSH_RECEIVED);
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if (this_cpu_read(cpu_tlbstate.state) == TLBSTATE_OK) {
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if (f->flush_end == TLB_FLUSH_ALL)
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local_flush_tlb();
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else if (!f->flush_end)
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__flush_tlb_single(f->flush_start);
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else {
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unsigned long addr;
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addr = f->flush_start;
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