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Re: [RFC] Optimize swab operations on mips_r2 cpu

To: Franck <vagabon.xyz@gmail.com>
Subject: Re: [RFC] Optimize swab operations on mips_r2 cpu
From: Ralf Baechle <ralf@linux-mips.org>
Date: Fri, 27 Jan 2006 11:31:43 +0000
Cc: "Kevin D. Kissell" <kevink@mips.com>, Nigel Stephens <nigel@mips.com>, linux-mips@linux-mips.org
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On Fri, Jan 27, 2006 at 11:45:34AM +0100, Franck wrote:

> no some are. As we said previously:
> 
>         1/ sizeof(vmlinux-mips32r2-Os) > sizeof(vmlinux-4ksd-Os)
>         2/ with -march=4ksd can do (slightly) better optimizations
> 
> > for every 4KSd embedded Linux platform there are several 4KEc platforms
> > that would benefit from a smaller kernel footprint.
> >
> 
> -Os can already be choosen by user in kernel configuration. Your
> CONFIG_CPU_MIPS_SMALL option brings nothing more except that the user
> is stuck with -Os option. BTW, I think it may be the default option in
> the near future for mainline...

Not before demonstrating that it is a clear win under all circumstances.

  Ralf

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