linux-kernel - Re: [PATCH] sched/rt: fix SCHED

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Message-ID: <1337951526.13348.249.camel@gandalf.stny.rr.com>
Date:	Fri, 25 May 2012 09:12:06 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc:	Dario Faggioli <raistlin@...ux.it>,
	Colin Cross <ccross@...roid.com>, linux-kernel@...r.kernel.org,
	Ingo Molnar <mingo@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Hillf Danton <dhillf@...il.com>,
	"Paul E. McKenney" <paulmck@...ibm.com>
Subject: Re: [PATCH] sched/rt: fix SCHED_RR across cgroups

On Fri, 2012-05-25 at 13:52 +0200, Peter Zijlstra wrote:
> On Wed, 2012-05-23 at 15:32 +0200, Dario Faggioli wrote:
> > Again, I really think it is the intended behaviour, and yes, real-time
> > group scheduling "breaks" the POSIX specification of the SCHED_{FIFO,RR}
> > policies intentionally (and _proudly_, as Peter would say it, am I
> > wrong? :-P). 
> 
> No, cgroups are well outside of POSIX ;-) as is SMP in fact.

That's because the POSIX standards committee is still struggling to come
up with standardized SMP calls to handle NR_CPUS = 0

Isn't Paul on that committee? ;-)

-- Steve


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