linux-kernel - Re: [Question] about modules/inline benefits

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Message-ID: <20080603171922.GA2663@cs181133002.pp.htv.fi>
Date:	Tue, 3 Jun 2008 20:19:22 +0300
From:	Adrian Bunk <bunk@...nel.org>
To:	Oliver Neukum <oliver@...kum.org>
Cc:	Sitsofe Wheeler <sitsofe@...oo.com>, linux-kernel@...r.kernel.org
Subject: Re: [Question] about modules/inline benefits

On Tue, Jun 03, 2008 at 09:54:41AM +0200, Oliver Neukum wrote:
> Am Dienstag 03 Juni 2008 09:28:59 schrieb Sitsofe Wheeler:
> > Modules allow you to support more hardware as there is a maximum size of the
> > core kernel image.
> 
> But you pay for every module with half a page of unused RAM and module
> code will be in vmalloced memory thus increases TLB pressure a bit.

Even more important, CONFIG_MODULES=y enlarges your kernel image by more 
than 5-10%, and you have to make _much_ stuff modular to compensate for 
this.

> 	Regards
> 		Oliver

cu
Adrian

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