linux-kernel - Re: [patch 1/6] sched, nohz: introduce nohz

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Message-ID: <1322130279.2921.7.camel@twins>
Date:	Thu, 24 Nov 2011 11:24:39 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Suresh Siddha <suresh.b.siddha@...el.com>
Cc:	Ingo Molnar <mingo@...e.hu>, Venki Pallipadi <venki@...gle.com>,
	Srivatsa Vaddagiri <vatsa@...ux.vnet.ibm.com>,
	Mike Galbraith <efault@....de>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Tim Chen <tim.c.chen@...ux.jf.intel.com>, alex.shi@...el.com
Subject: Re: [patch 1/6] sched, nohz: introduce nohz_flags in the struct rq

On Fri, 2011-11-18 at 15:03 -0800, Suresh Siddha wrote:
> plain text document attachment (introduce_rq_nohz_flags.patch)
> Introduce nohz_flags in the struct rq, which will track two flags for now.
> 
> NOHZ_TICK_STOPPED will convey the stop tick status that gets set when
> the tick is stopped and cleared during the first busy tick after the tick
> is restarted.
> 
> NOHZ_BALANCE_KICK will track the need for nohz idle load balance
> on this rq.

The changelog is missing the crucial part: Why are we doing this? :-)
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