linux-kernel - Re: [RFC PATCH 02/15] nohz_task: Avoid nohz task cpu as non-idle timer target

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Message-ID: <20101221135849.GE1750@nowhere>
Date:	Tue, 21 Dec 2010 14:58:52 +0100
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc:	Steven Rostedt <rostedt@...dmis.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Ingo Molnar <mingo@...e.hu>,
	Lai Jiangshan <laijs@...fujitsu.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Anton Blanchard <anton@....ibm.com>,
	Tim Pepper <lnxninja@...ux.vnet.ibm.com>
Subject: Re: [RFC PATCH 02/15] nohz_task: Avoid nohz task cpu as non-idle
 timer target

On Tue, Dec 21, 2010 at 08:51:42AM +0100, Peter Zijlstra wrote:
> On Tue, 2010-12-21 at 01:20 +0100, Frederic Weisbecker wrote:
> > I can certainly deactivate TIMER_NOT_PINNED and make it a no-op
> > if CONFIG_NO_HZ_TASK.
> 
> Why would you want to make that a compile time switch? Dynamic is
> trivial to do.

Yep, I did not know the proc file at that time.
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