linux-kernel - Re: [PATCH 10/24] net, diet: Make LPF filter optional

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Message-Id: <20140505.231015.1267261274092331777.davem@davemloft.net>
Date:	Mon, 05 May 2014 23:10:15 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	andi@...stfloor.org
Cc:	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	tom.zanussi@...ux.intel.com, ak@...ux.intel.com
Subject: Re: [PATCH 10/24] net, diet: Make LPF filter optional

From: Andi Kleen <andi@...stfloor.org>
Date: Mon,  5 May 2014 15:25:59 -0700

> From: Andi Kleen <ak@...ux.intel.com>
> 
> 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 <ak@...ux.intel.com>

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