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From: Jon Masters <jonathan@jonmasters.org>
To: Rik van Riel <riel@redhat.com>
Cc: Randy Dunlap <randy.dunlap@oracle.com>,
	akpm@linux-foundation.org, linux-kernel@vger.kernel.org,
	lwoodman@redhat.com
Subject: Re: [PATCH] sysrq show-all-cpus
Date: Tue, 11 Mar 2008 03:18:24 -0400	[thread overview]
Message-ID: <1205219904.27299.100.camel@perihelion> (raw)
In-Reply-To: <20080310140315.1a451092@bree.surriel.com>

On Mon, 2008-03-10 at 14:03 -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@redhat.com>

Why not have it just print the local CPU on non-SMP anyway?

Jon.



  parent reply	other threads:[~2008-03-11  7:19 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-03-10 17:32 Rik van Riel
2008-03-10 17:41 ` Andrew Morton
2008-03-10 17:57   ` Rik van Riel
2008-03-10 17:46 ` Randy Dunlap
2008-03-10 18:03   ` Rik van Riel
2008-03-10 18:09     ` Randy Dunlap
2008-03-11  7:18     ` Jon Masters [this message]
2008-03-11 14:07       ` Rik van Riel
2008-03-11 15:06         ` Jon Masters
2008-03-11  8:12     ` Nick Piggin

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