From: "David S. Miller" <davem@davemloft.net>
To: mingo@redhat.com
Cc: linux-kernel@vger.kernel.org
Subject: Re: softlockup interaction with slow consoles
Date: Tue, 21 Feb 2006 01:16:50 -0800 (PST) [thread overview]
Message-ID: <20060221.011650.120896368.davem@davemloft.net> (raw)
In-Reply-To: <Pine.LNX.4.58.0602210404330.3092@devserv.devel.redhat.com>
From: Ingo Molnar <mingo@redhat.com>
Date: Tue, 21 Feb 2006 04:09:58 -0500 (EST)
> i changed soft lockup detection to be turned off during bootup. That
> should work around any boot-time warnings.
Excellent.
> (if this can happen on a booted up system then the real fix would indeed
> be to split up register_console()'s workload - that would also make it
> more preemption-friendly. But at first sight it looks quite complex to
> do.)
Agreed. I thought about buffering in the slow console driver itself
but that's bad because if it's a crash message we might not get the
events (interrupts, or whatever) in order to make forward progress
printing out the buffer, and thus we'd lose the valuable messages.
next prev parent reply other threads:[~2006-02-21 9:16 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-02-20 21:18 softlockup interaction with slow consoles David S. Miller
2006-02-21 9:09 ` Ingo Molnar
2006-02-21 9:16 ` David S. Miller [this message]
2006-02-21 13:49 ` Andi Kleen
2006-02-21 20:01 ` David S. Miller
2006-02-21 20:05 ` Andi Kleen
2006-02-21 20:19 ` David S. Miller
2006-02-21 20:27 ` Dave Jones
2006-02-21 20:50 ` David S. Miller
2006-02-21 20:43 ` Andi Kleen
2006-02-21 19:23 ` Matt Mackall
2006-02-21 19:58 ` David S. Miller
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