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

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Message-ID: <20120411171004.016ddd95@nehalam.linuxnetplumber.net>
Date:	Wed, 11 Apr 2012 17:10:04 -0700
From:	Stephen Hemminger <shemminger@...tta.com>
To:	paulmck@...ux.vnet.ibm.com
Cc:	Meelis Roos <mroos@...ux.ee>, David Miller <davem@...emloft.net>,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: suspicious RCU usage warnings in 3.3.0

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.
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