linux-kernel - Re: [PATCH] detour TTY driver

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Message-ID: <20100824225703.GA5913@suse.de>
Date:	Tue, 24 Aug 2010 15:57:03 -0700
From:	Greg KH <gregkh@...e.de>
To:	Samo Pogacnik <samo_pogacnik@....net>
Cc:	linux kernel <linux-kernel@...r.kernel.org>,
	linux-embedded <linux-embedded@...r.kernel.org>,
	Alan Cox <alan@...rguk.ukuu.org.uk>
Subject: Re: [PATCH] detour TTY driver - now ttyprintk

On Wed, Aug 25, 2010 at 12:50:32AM +0200, Samo Pogacnik wrote:
> Dne 24.08.2010 (tor) ob 15:20 -0700 je Greg KH zapisal(a):
> > > > And what about the normal way of just writing to /dev/kmsg to do this?
> > > > Why a whole new driver for this same functionality?
> > > I must admit, i was not aware of the /dev/kmsg driver, but i made a few
> > > tests and found out that it seems not to be possible to redirect console
> > > to kmsg.
> > 
> > See how systemd does this, as it sounds like exactly what you want to
> > do.  Look in either Fedora 14, or openSUSE Factory for examples of this,
> > with no kernel changes needed.
> > 
> I'll check out systemd. 
> 
> however:)
> It may be that systemd does not cover the initrd part of the
> initialization and it may be an overkill do introduce systemd to an
> existing system just to be analyzed.

No, it does cover that.  You should be able to do that with a simple
console redirection to /dev/kmsg  What happened when you tried to do
that?

thanks,

greg k-h
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