[PATCH v3] TLB flush optimization

[Alex Shi]

This version just added 2 patches, the 6th and 7th. The first 5 patches are 
same as v2.

Seems it is a little hard for me to find a real case to show performance gain.
But the advantage is there ture.

Any comments are appreciated!

Alex

[PATCH v3 1/7] x86/tlb_info: get last level TLB entry number of CPU
[PATCH v3 2/7] x86/flush_tlb: try flush_tlb_single one by one in
[PATCH v3 3/7] x86/tlb: fall back to flush all when meet a THP large
[PATCH v3 4/7] x86/tlb: add tlb flush all factor for specific CPUs
[PATCH v3 5/7] x86/tlb: remove comments for tlb_flush_range
[PATCH v3 6/7] x86/tlb: optimizing flush_tlb_mm
[PATCH v3 7/7] x86/tlb: add tlb_flushall_factor into sysfs for user
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