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Date: Thu, 26 May 2011 08:13:48 +0200
From: Ingo Molnar <mingo@elte.hu>
To: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Cc: Yinghai Lu <yinghai@kernel.org>, linux-kernel@vger.kernel.org,
        mingo@redhat.com, hpa@zytor.com, tglx@linutronix.de
Subject: Re: [tip:core/rcu] Revert "rcu: Decrease memory-barrier usage based
 on semi-formal proof"
Message-ID: <20110526061348.GA26775@elte.hu>
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* Paul E. McKenney <paulmck@linux.vnet.ibm.com> wrote:

> rcu: Start RCU kthreads in TASK_INTERRUPTIBLE state
> 
> Upon creation, kthreads are in TASK_UNINTERRUPTIBLE state, which can
> result in softlockup warnings.  Because some of RCU's kthreads can
> legitimately be idle indefinitely, start them in TASK_INTERRUPTIBLE
> state in order to avoid those warnings.
> 
> Suggested-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

this should also solve load average artifacts - do not 
TASK_UNINTERRUPTIBLE tasks skew the load upwards?

Thanks,

	Ingo