Message-ID: <471B7752.7050306@redhat.com>
Date: Sun, 21 Oct 2007 11:59:14 -0400
From: Chuck Ebbert <cebbert@redhat.com>
Organization: Red Hat
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To: David Miller <davem@davemloft.net>
CC: jeff@garzik.org, linux-kernel@vger.kernel.org,
       Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [2.6.23] tasks stuck in running state?
References: <47192763.9050004@redhat.com>	<47192999.6010607@garzik.org>	<47192D20.8090608@redhat.com> <20071019.170140.45897518.davem@davemloft.net>
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On 10/19/2007 08:01 PM, David Miller wrote:
> 
> What might be appropriate is just to get a one-line program counter
> dump on every cpu via some new sysrq keystroke.
> 

IIRC -mm had something like this but it was buggy because we were
sending IPIs to each processor asking them to print their state.
Maybe it would work if we had a way of making them dump their
state to a memory location and then collected and printed it from
the CPU that's handling the sysrq.
-
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