linux-kernel - Re: [2.6.23] tasks stuck in running state?

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Message-ID: <471B7752.7050306@redhat.com>
Date:	Sun, 21 Oct 2007 11:59:14 -0400
From:	Chuck Ebbert <cebbert@...hat.com>
To:	David Miller <davem@...emloft.net>
CC:	jeff@...zik.org, linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [2.6.23] tasks stuck in running state?

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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