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Date: Mon, 12 Feb 2001 22:38:35 +1100
From: Andrew Morton <andrewm@uow.edu.au>
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To: Alan Cox <alan@lxorguk.ukuu.org.uk>
CC: Pavel Machek <pavel@suse.cz>,
        Tom Eastep <teastep@seattlefirewall.dyndns.org>,
        "Michael B. Trausch" <fd0man@crosswinds.net>,
        Josh Myer <jbm@joshisanerd.com>, linux-kernel@vger.kernel.org
Subject: Re: [OT] Major Clock Drift
In-Reply-To: <20010212113213.B235@bug.ucw.cz> from "Pavel Machek" at Feb 12, 2001 11:32:13 AM <E14SGLm-0006es-00@the-village.bc.nu>
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Alan Cox wrote:
> 
> > >                     queued_writes=1;
> > >                     return;
> > >             }
> > >     }
> >
> > Unfortunately, that means that if machine crashes in interrupt, it may
> > "loose" printk message. That is considered bad (tm).
> 
> The alternative is that the machine clock slides continually and the machine
> is unusable. This is considered even worse by most people

Neither.  I was going to dust off my enhanced "bust_spinlocks"
patch which sets a little flag when we're doing an
oops, BUG(), panic() or die().  If the flag
is set, printk() just punches through the lock.
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