linux-kernel - Re: report a bug about sched

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Message-ID: <alpine.LFD.2.00.0907241721040.2936@localhost.localdomain>
Date:	Fri, 24 Jul 2009 17:34:33 +0200 (CEST)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	sen wang <wangsen.linux@...il.com>
cc:	Peter Zijlstra <peterz@...radead.org>, mingo@...e.hu,
	akpm@...ux-foundation.org, kernel@...ivas.org, npiggin@...e.de,
	arjan@...radead.org, linux-arm-kernel@...ts.arm.linux.org.uk,
	linux-kernel@...r.kernel.org
Subject: Re: report a bug about sched_rt

On Fri, 24 Jul 2009, sen wang wrote:
> 2009/7/24 Peter Zijlstra <peterz@...radead.org>:
> > On Fri, 2009-07-24 at 22:04 +0800, sen wang wrote:
> >
> >> just one question:
> >> if cpu is free and there is running state task, how you do?
> >> schedule the task up? or schedule idle task up?
> >
> > Well, when an RT group is over the bandwidth limit I don't consider them
> > runnable. Therefore, failing to find any other tasks, we run the idle
> > task.
> >
> 
> you havn't anwser the question: if cpu is free, should we  schedule the
> running state task or idle task?

Peter explained how it's implemented and why he considers it to be
correct and that it can be disabled.

> face the error and fix it! ok?

Can you please stop yelling at Peter? 

He politely answered your questions. Have you even thought about his
answers before shouting "error" ? Also be aware that you can yell "fix
it" as often as you want, all you are achieving is an entry in a
couple of /dev/null procmail rules.

Please read http://www.tux.org/lkml/#s3-12 before you answer again.

Thanks,

	tglx
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