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

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Date:	Thu, 10 Nov 2011 19:33:12 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	paulmck@...ux.vnet.ibm.com
Cc:	Wu Fengguang <fengguang.wu@...el.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	"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>
Subject: Re: linux-next 20111025: warnings in
 rcu_idle_exit_common()/rcu_idle_enter_common()

On Thu, 2011-11-10 at 09:20 -0800, Paul E. McKenney wrote:

> Should this be encapsulated, for example in an inline function something
> as follows?
> 
> static inline void cpu_is_running_idle_task(struct task_struct *tsk)
> {
> 	return tsk->pid == 0;
> }
> 
> I am sure I could come up with a longer name, if you would prefer.  ;-)

:-)

> I would be happy to create the patch and fix up the other open-coded
> uses of ->pid==0 if this approach looks good to you.

is_idle_task(p) would work for me.
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