Re: [PATCH 1/3] x86/tlb_info: get last level TLB entry number ofCPU

[Rik van Riel]

On 04/28/2012 04:50 AM, Alex Shi wrote:
> For 4KB pages, x86 CPU has 2 or 1 level TLB, first level is data TLB and
> instruction TLB, second level is shared TLB for both data and instructions.
>
> For hupe page TLB, usually there is just one level and seperated by 2MB/4MB
> and 1GB.
>
> Although each levels TLB size is important for performance tuning, but for
> genernal and rude optimizing, just last level TLB entry number is suitable.
> And in fact, last level TLB has the biggest entry number.
>
> This patch will get the biggest TLB entry number and use it in furture TLB
> optimizing.
>
> Signed-off-by: Alex Shi<alex.shi@xxxxxxxxx>

Acked-by: Rik van Riel <riel@xxxxxxxxxx>

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