linux-kernel - Re: [PATCH 05/16] sched: SCHED_DEADLINE policy implementation.

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Message-ID: <1335248967.2397.8.camel@Abyss>
Date:	Tue, 24 Apr 2012 08:29:27 +0200
From:	Dario Faggioli <raistlin@...ux.it>
To:	Tommaso Cucinotta <tommaso.cucinotta@...up.it>
Cc:	Peter Zijlstra <peterz@...radead.org>,
	Juri Lelli <juri.lelli@...il.com>, tglx@...utronix.de,
	mingo@...hat.com, rostedt@...dmis.org, cfriesen@...tel.com,
	oleg@...hat.com, fweisbec@...il.com, darren@...art.com,
	johan.eker@...csson.com, p.faure@...tech.ch,
	linux-kernel@...r.kernel.org, claudio@...dence.eu.com,
	michael@...rulasolutions.com, fchecconi@...il.com,
	nicola.manica@...i.unitn.it, luca.abeni@...tn.it,
	dhaval.giani@...il.com, hgu1972@...il.com,
	paulmck@...ux.vnet.ibm.com, insop.song@...csson.com,
	liming.wang@...driver.com
Subject: Re: [PATCH 05/16] sched: SCHED_DEADLINE policy implementation.

On Tue, 2012-04-24 at 00:25 +0100, Tommaso Cucinotta wrote: 
> > The idea is that ->clock_task gives the time as observed by schedulable
> > tasks and excludes other muck.
> 
> so clock_task might be better to compute the consumed budget at task 
> deschedule, but for setting deadlines one period ahead in the future 
> guess the regular wall-time rq->clock is the one to be used?
> 
Yep, that was the idea, unless my recollection has completely gone
flaky! :-P

Perhaps adding a comment saying right this thing above, as Peter
suggested?

Regards,
Dario

-- 
<<This happens because I choose it to happen!>> (Raistlin Majere)
-----------------------------------------------------------------
Dario Faggioli, Ph.D, http://retis.sssup.it/people/faggioli
Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK)



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