linux-kernel - Re: [PATCH] sysrq show-all-cpus

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Message-Id: <20080310104628.b70af419.randy.dunlap@oracle.com>
Date:	Mon, 10 Mar 2008 10:46:28 -0700
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	Rik van Riel <riel@...hat.com>
Cc:	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
	lwoodman@...hat.com
Subject: Re: [PATCH] sysrq show-all-cpus

On Mon, 10 Mar 2008 13:32:42 -0400 Rik van Riel wrote:

> SysRQ-P is not always useful on SMP systems, since it usually ends up showing the
> backtrace of a CPU that is doing just fine, instead of the backtrace of the CPU
> that is having problems.
> 
> This patch adds SysRQ show-all-cpus(L), which shows the backtrace of every active
> CPU in the system.  It skips idle CPUs because some SMP systems are just too large
> and we already know what the backtrace of the idle task looks like.
> 
> Signed-off-by: Rik van Riel <riel@...hat.com>

Hi,
Please update Documentation/sysrq.txt also.

---
~Randy
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