From: Andi Kleen <[email protected]>
Date: Mon,  5 May 2014 15:25:59 -0700

> From: Andi Kleen <[email protected]>
> 
> Small systems don't need the LPF filter, so make it all
> optional
> 
> Saves about 4K text
> 
>    text          data     bss     dec     hex filename
>  483545         19371   13480  516396   7e12c net/built-in.o-wo-filter
>  487675         19275   13480  520430   7f0ee net/built-in.o-with-filter
> 
> Signed-off-by: Andi Kleen <[email protected]>

I think you highly underestimate how much "small systems" use
packet capturing and thus BPF.
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