linux-kernel - Re: linux-next 20111025: warnings in rcu_idle_exit_common()/rcu_idle_enter

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Message-ID: <1320245512.4793.29.camel@gandalf.stny.rr.com>
Date:	Wed, 02 Nov 2011 10:51:52 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	paulmck@...ux.vnet.ibm.com
Cc:	Wu Fengguang <fengguang.wu@...el.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...e.hu>,
	Lai Jiangshan <laijs@...fujitsu.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Carsten Emde <cbe@...dl.org>
Subject: Re: linux-next 20111025: warnings in
 rcu_idle_exit_common()/rcu_idle_enter_common()

On Wed, 2011-11-02 at 07:44 -0700, Paul E. McKenney wrote:

> rcu: Fix idle-task checks
> 
> RCU has traditionally relied on idle_cpu() to determine whether a given
> CPU is running in the context of an idle task, but recent changes have
> invalidated this approach.  This commit therefore switches from idle_cpu
> to "current->pid != 0".
> 
> Suggested-by: Carsten Emde <C.Emde@...dl.org>



> Signed-off-by: Paul E. McKenney <paul.mckenney@...aro.org>
> Signed-off-by: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>


I always knew you had a split personality Paul ;)

-- Steve


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