linux-kernel - Re: [PATCH] Compress kernel modules on installation.

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Message-ID: <20080226123016.GA27813@cs181133002.pp.htv.fi>
Date:	Tue, 26 Feb 2008 14:30:16 +0200
From:	Adrian Bunk <bunk@...nel.org>
To:	Willy Tarreau <w@....eu>
Cc:	Steve Brokenshire <sbrokenshire@...tia.co.uk>,
	linux-kernel@...r.kernel.org, linux-kbuild@...r.kernel.org
Subject: Re: [PATCH] Compress kernel modules on installation.

On Tue, Feb 26, 2008 at 11:22:03AM +0100, Willy Tarreau wrote:
> On Tue, Feb 26, 2008 at 11:14:55AM +0200, Adrian Bunk wrote:
> > On Mon, Feb 25, 2008 at 11:21:38PM +0100, Willy Tarreau wrote:
>...
> > > Have you tried keeping the module names intact (.ko, not .ko.gz) ?
> > > It's what I was doing with modutils in 2.4 and what I'm still doing
> > > with module-init-tools in 2.6. While I don't particularly use mkinitrd,
> > > I think that keeping the name intact is preferable and should help.
> > 
> > How would you see if, and if yes with what program, a module was 
> > compressed if the name is kept intact?
> 
> depmod/modinfo/insmod/modprobe already know it. And quite honnestly,
> I don't know about any other program which really needs to process
> those files once installed. Well, maybe ksymoops, but I'd have to
> check, as I don't recall having ever been annoyed with this.
>...

depmod/modinfo/insmod/modprobe know only if you compile 
module-init-tools with zlib support.

And what about the busybox versions?

A different name would e.g.:
- easily allow proper error handling if the userspace modules program 
  doesn't support the compression used
- better scale to support additional compressions
- give the user a hint what is happening and what might be the problem
  when anythig goes wrong

> Regards,
> Willy

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

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