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Date: Mon, 7 Oct 2002 11:10:21 +0200
From: Jan-Benedict Glaw <jbglaw@lug-owl.de>
To: linux-kernel@vger.kernel.org
Subject: Re: The end of embedded Linux?
Message-ID: <20021007091020.GU17934@lug-owl.de>
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On Sat, 2002-10-05 12:36:50 -0700, Gigi Duru <giduru@yahoo.com>
wrote in message <20021005193650.17795.qmail@web13202.mail.yahoo.com>:
> Trivial experiment: configure out _ALL_ the options on
> 2.5.38 and build bzImage. My result? A totally useless
> 270KB kernel (compressed).=20

Well, from time to time, there are patches/suggestions on how to get the
footprint smaller. If you do embedded work, you're oftenly not
interestes in all the kernel's printk() messages. I have sent around
some patch some time ago which (in kernel.h) simply #define's a printk
to do nothing. Then, rename original printk() to your_real_printk() and
convert _really_ important printk() calls to your_real_printk(), eg.
Oops messages:-)

On a small kernel, you can save 50..100 KB (in the bzImage)! That's a
lot; think about uncompressed size!

And - there are other options as well. Just _look_ at the code, _think_
about it and (possibly) _change_ it if needed (and publish the changes
so that they're available to others).

MfG, JBG

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