linux-kernel - Re: [PATCH] lib/vsprintf.c: Add %pMF to format FDDI bit reversed MAC addresses

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Message-ID: <1262900175.10429.75.camel@Joe-Laptop.home>
Date:	Thu, 07 Jan 2010 13:36:15 -0800
From:	Joe Perches <joe@...ches.com>
To:	Michał Mirosław <mirqus@...il.com>
Cc:	H Hartley Sweeten <hartleys@...ionengravers.com>,
	David Miller <davem@...emloft.net>,
	"Maciej W. Rozycki" <macro@...ux-mips.org>,
	linux-kernel@...r.kernel.org, netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH] lib/vsprintf.c: Add %pMF to format FDDI bit reversed
 MAC  addresses

On Thu, 2010-01-07 at 22:18 +0100, Michał Mirosław wrote: 
> Something like the following might be smaller and faster - no
> functions and their calls
> int rev = (fmt[1] == 'F');
> p = pack_hex_byte(p, rev ? bitrev8(addr[i]) : addr[i]);

Right, better.  Just 6 bytes (x86).  Resubmitting.


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