linux-kernel - Re: [RFC][PATCH 02/22] sched: add extended scheduling interface

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Date:	Fri, 12 Nov 2010 20:19:09 +0100
From:	Raistlin <raistlin@...ux.it>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>,
	Chris Friesen <cfriesen@...tel.com>, oleg@...hat.com,
	Frederic Weisbecker <fweisbec@...il.com>,
	Darren Hart <darren@...art.com>,
	Johan Eker <johan.eker@...csson.com>,
	"p.faure" <p.faure@...tech.ch>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Claudio Scordino <claudio@...dence.eu.com>,
	michael trimarchi <trimarchi@...is.sssup.it>,
	Fabio Checconi <fabio@...dalf.sssup.it>,
	Tommaso Cucinotta <cucinotta@...up.it>,
	Juri Lelli <juri.lelli@...il.com>,
	Nicola Manica <nicola.manica@...i.unitn.it>,
	Luca Abeni <luca.abeni@...tn.it>,
	Dhaval Giani <dhaval@...is.sssup.it>,
	Harald Gustafsson <hgu1972@...il.com>,
	paulmck <paulmck@...ux.vnet.ibm.com>
Subject: Re: [RFC][PATCH 02/22] sched: add extended scheduling interface

On Fri, 2010-11-12 at 11:52 -0500, Steven Rostedt wrote:
> > No, some of the bits in 18/22 come near, but I'd prefer not to add such
> > things until we've got a convincing use-case.
> 
> I'm fine with that, but I would like to know if the ABI would be able to
> add such an extension in the future if we find a convincing use-case.
> 
Scared about ABIs' stability eh? :-PP

BTW, in this case everything should be fine, since the very exact
behaviour you described was triggered by a (couple of) flag(s), which
can be added and dealt with during sched_setscheduler2() at any time.

As Peter was saying, see patch 18 for details.

Thanks,
Dario

-- 
<<This happens because I choose it to happen!>> (Raistlin Majere)
----------------------------------------------------------------------
Dario Faggioli, ReTiS Lab, Scuola Superiore Sant'Anna, Pisa  (Italy)

http://blog.linux.it/raistlin / raistlin@...ga.net /
dario.faggioli@...ber.org

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