linux-kernel - Re: [PATCH] x86 (Linux Tiny): configure out support for some processors

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Message-ID: <47AD725E.6050903@free-electrons.com>
Date:	Sat, 09 Feb 2008 10:29:02 +0100
From:	Michael Opdenacker <michael-lists@...e-electrons.com>
To:	Simon Holm Thøgersen <odie@...aau.dk>
CC:	Matt Mackall <mpm@...enic.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Anvin" <hpa@...or.com>, linux-kernel@...r.kernel.org,
	Linux-tiny@...enic.com
Subject: Re: [PATCH] x86 (Linux Tiny): configure out support for some	processors

On 02/09/2008 09:30 AM, Simon Holm Thøgersen wrote:
> The build of my currently running kernel for my laptop has
> $ size -t amd.o cyrix.o centaur.o transmeta.o intel.o nexgen.o umc.o
>    text	   data	    bss	    dec	    hex	filename
>    2809	    316	      0	   3125	    c35	amd.o
>    2387	    856	      0	   3243	    cab	cyrix.o
>    1514	    312	      0	   1826	    722	centaur.o
>    1279	    312	      0	   1591	    637	transmeta.o
>    1783	    316	      0	   2099	    833	intel.o
>     126	    312	      0	    438	    1b6	nexgen.o
>      41	    312	      0	    353	    161	umc.o
>    9939	   2736	      0	  12675	   3183	(TOTALS)
>
> That is without optimize for size compilation, with that set I get
> $ size -t amd.o cyrix.o centaur.o transmeta.o intel.o nexgen.o umc.o
>    text	   data	    bss	    dec	    hex	filename
>    2300	    316	      0	   2616	    a38	amd.o
>    2132	    820	      0	   2952	    b88	cyrix.o
>    1325	    312	      0	   1637	    665	centaur.o
>    1151	    312	      0	   1463	    5b7	transmeta.o
>    1575	    316	      0	   1891	    763	intel.o
>     107	    312	      0	    419	    1a3	nexgen.o
>      41	    312	      0	    353	    161	umc.o
>    8631	   2700	      0	  11331	   2c43	(TOTALS)
>
> I don't think the code changes in the patch do much with respect to
> size.
>   
Thanks for this report. Don't you think it's still useful to save up to
12 K of code that you don't use if you just have an Intel processor (for
example)?

Cheers,

Michael.

-- 
Michael Opdenacker, Free Electrons
Free Embedded Linux Training Materials
on http://free-electrons.com/training
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