linux-kernel - Re: suspicious RCU usage warnings in 3.3.0

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Message-Id: <20120411.201854.1070083308359208025.davem@davemloft.net>
Date:	Wed, 11 Apr 2012 20:18:54 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	shemminger@...tta.com
Cc:	paulmck@...ux.vnet.ibm.com, mroos@...ux.ee,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: suspicious RCU usage warnings in 3.3.0

From: Stephen Hemminger <shemminger@...tta.com>
Date: Wed, 11 Apr 2012 17:10:04 -0700

> On Wed, 11 Apr 2012 16:08:37 -0700
> "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com> wrote:
> 
>> Hmmm...  What CPU family is this running on?  From the look of the
>> stack, it is sneaking out of idle into softirq without telling RCU.
>> This would cause RCU to complain bitterly about being invoked from
>> the idle loop -- and RCU ignores CPUs in the idle loop.
>> 
>> 							Thanx, Paul
> 
> Sun4... Ping David.

So is there anything specific I need to do in the sparc64
idle loop?
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