linux-kernel - Re: printk() vs tty

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Message-ID: <20111215190232.GE18791@kroah.com>
Date:	Thu, 15 Dec 2011 11:02:32 -0800
From:	Greg KH <greg@...ah.com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Ted Ts'o <tytso@....edu>, Alan Cox <alan@...rguk.ukuu.org.uk>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...e.hu>
Subject: Re: printk() vs tty_io

On Thu, Dec 15, 2011 at 10:56:45AM +0100, Peter Zijlstra wrote:
> [ Personally I think USB serial console is insane, if you really need
> something like that use the ehci-dbgp thing, that at least has a chance
> of working. ]

USB serial console was written on a drunken bet and the fact that it
even works at all constantly amazes me.  I know people use it as that's
all they have access to, but for "real" debugging, you are right, you
need the ehci-debug device to ensure that you really get the oops
messages the system sends out.

thanks,

greg k-h
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