linux-kernel - Re: linux kernel without file system

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Message-Id: <200901151906.43701.arnd@arndb.de>
Date:	Thu, 15 Jan 2009 19:06:42 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	Philippe De Muyter <phdm@...qel.be>
Cc:	Rogan Dawes <lists@...es.za.net>,
	Xavier Bestel <xavier.bestel@...e.fr>,
	Tomasz Chmielewski <mangoo@...g.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: linux kernel without file system

On Wednesday 14 January 2009, Philippe De Muyter wrote:
> if possible, mcf52236 (256k flash 32k sram in chip) :)
> 
> kernel+uapplication XIP in flash
> 
> they seems to push something called utasker

In 256kb it will be hard to even support simple user space.
One solution might be to just use linux as a library and
implement your application code in the kernel, inside
of the . That lets you throw out all system calls and some
of the init code of the kernel (don't call rest_init).

At that stage, you have lost most of the advantages of
using Linux over some other kernel.

	Arnd <><
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