From: Greg KH <greg@kroah.com>
To: linux-hotplug@vger.kernel.org
Subject: Re: On demand modules loading with {tmp,ram}fs and udev
Date: Tue, 28 Oct 2003 18:31:17 +0000 [thread overview]
Message-ID: <marc-linux-hotplug-106736702810435@msgid-missing> (raw)
In-Reply-To: <marc-linux-hotplug-106704029925575@msgid-missing>
On Sat, Oct 25, 2003 at 03:09:32AM +0200, Tomasz Torcz wrote:
> On Fri, Oct 24, 2003 at 05:42:34PM -0700, Greg KH wrote:
> > On Sat, Oct 25, 2003 at 02:00:18AM +0200, Tomasz Torcz wrote:
> > > Hi,
> > >
> > > I was thinking about small addition to tmpfs. When mounted with 'dev'
> > > option, any lookup of non existing file should result in calling
> > > modprobe with filename as argument.
> > > When coupled with mount tmpfs over /dev (or /udev) this functionality
> > > would allow on-demand module loading (as with devfs and plain old
> > > device nodes).
> >
> > How will you do the mapping of /dev names to modules in kernel space?
> > How are you going to know which of the 50 or so sound drivers to load
> > when opening /dev/dsp?
>
> Just call modprobe. Modprobe will check /etc/modprobe.conf for dsp
> aliases and load module. Then udev will make devnode.
Ok, that sounds reasonable. Looking forward to your ramfs
implementation that does this :)
> I'm also surprised that"load the driver when we open the /dev node"
> is a hack. I get used to this standard Linux functionality as
> something obvious. Other OSed (*BSD, Solaris etc.) don't work like
> that?
I do not know what other oses do in this regard, sorry.
greg k-h
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prev parent reply other threads:[~2003-10-28 18:31 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-10-25 0:00 On demand modules loading with {tmp,ram}fs and udev Tomasz Torcz
2003-10-25 0:42 ` Greg KH
2003-10-25 1:09 ` Tomasz Torcz
2003-10-28 18:31 ` Greg KH [this message]
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