netdev - Re: IPv6 over firewire

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Message-ID: <20130112145757.4ff61f18@stein>
Date:	Sat, 12 Jan 2013 14:57:57 +0100
From:	Stefan Richter <stefanr@...6.in-berlin.de>
To:	stephan.gatzka@...il.com
Cc:	linux1394-devel@...ts.sourceforge.net, yoshfuji@...ux-ipv6.org,
	netdev@...r.kernel.org
Subject: Re: IPv6 over firewire

On Jan 12 Stephan Gatzka wrote:
> >    - There is another downside:  Each new driver method increases the
> >      memory footprint of instances of respective function pointer tables
> >      by 4 or 8 bytes.
> 
> I can't imagine that this is a show stopper. How many instances of 
> struct netdev do we have o a typical system? I guess not the much.

There aren't many instances, but these instances are used in hot paths
where cache utilization matters.  Of course such structures can be ordered
so that often used parts are located close to each other.
-- 
Stefan Richter
-=====-===-= ---= -==--
http://arcgraph.de/sr/
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