linux-kernel - Re: [PATCH 2/3] sched: Fix the wakeup nomination for sched_mc/smt_power

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Message-ID: <20090217065956.GB28515@in.ibm.com>
Date:	Tue, 17 Feb 2009 12:29:56 +0530
From:	Gautham R Shenoy <ego@...ibm.com>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc:	linux-kernel@...r.kernel.org, svaidy@...ux.vnet.ibm.com,
	mingo@...e.hu, suresh.b.siddha@...el.com, balbir@...ibm.com,
	dipankar@...ibm.com, efault@....de, andi@...stfloor.org
Subject: Re: [PATCH 2/3] sched: Fix the wakeup nomination for
	sched_mc/smt_power_savings.

On Mon, Feb 16, 2009 at 06:45:23PM +0100, Peter Zijlstra wrote:
> On Mon, 2009-02-16 at 22:21 +0530, Gautham R Shenoy wrote:
> > @@ -520,6 +520,11 @@ struct root_domain {
> >          * low system utilisation. Triggered at POWERSAVINGS_BALANCE_WAKEUP(2)
> >          */
> >         unsigned int sched_mc_preferred_wakeup_cpu;
> > +       /*
> > +        * The sched-domain level which is authorized to nominate the preferred
> > +        * wake up cpu.
> > +        */
> > +       enum sched_domain_level authorized_nomination_level
> 
> Some day my brain is just going to explode.. ;-)
> 
> Can we do a nice concise writeup of the power-save dynamics somewhere?

Sure, will work on that one.

-- 
Thanks and Regards
gautham
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