linux-kernel - Re: KALLSYMS always enabled in 'make gconfig' on PS3 kernel

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Date:	Sun, 18 Jan 2009 15:59:43 -0800
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	Simon W Bock <sbock@...-tuebingen.de>
CC:	linux-kernel@...r.kernel.org
Subject: Re: KALLSYMS always enabled in 'make gconfig' on PS3 kernel

Simon W Bock wrote:
> Hi All,
> this seems to be the most appropriate place to report it...

Yes, or linux-kbuild@...r.kernel.org

> I try to compile a kernel on and for the PS3 using Geoff Levand's
> sources
> http://git.kernel.org/?p=linux/kernel/git/geoff/ps3-linux.git;a=summary
> and did a 'make ps3_defconfig' before doing 'make gconfig'.
> Now I'd care much more for 300k less in kernel size than for full
> symbols in the OOPS, so I would like to deselect KALLSYMS and
> KALLSYMS_ALL. The latter is even suggested to disable in the help text.
> But whatever I do, those two are always selected. Even when I deselect
> them using vi, the next time I do a 'make gconfig' on the config-file
> they are on again.

First, this isn't gconfig-specific.  xconfig or menuconfig should
have the same behavior.  At least I see it in xconfig also.

> Is this done for some special reason? Or can they be turned off?

All 3 of the KALLSYMS kconfig symbols are under the kconfig menu
prompt:  "Configure standard kernel features (for small systems)",
which is not enabled in ps3_defconfig AFAICT (unless Geoff's is
modified from that I can see/test in linux-next).  All that you
need to do is enable that config symbol (called CONFIG_EMBEDDED)
and then you can modify the KALLSYMS config symbols.

HTH.
-- 
~Randy
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