From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Gregory Haskins" <ghaskins@novell.com>
Subject: Re: [PATCH 2/2] sched: prioritize non-migratable tasks over
	migratableones
Date: Wed, 23 Apr 2008 07:11:42 -0600
Message-ID: <480EFD4E.BA47.005A.0@novell.com>
References: <20080423111313.4981.37345.stgit@novell1.haskins.net>
 <20080423111334.4981.19638.stgit@novell1.haskins.net>
 <Pine.LNX.4.58.0804230854210.23815@gandalf.stny.rr.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 8BIT
Cc: "Ingo Molnar" <mingo@elte.hu>,
	"Dmitry Adamushko" <dmitry.adamushko@gmail.com>,
	<linux-kernel@vger.kernel.org>, <linux-rt-users@vger.kernel.org>
To: "Steven Rostedt" <rostedt@goodmis.org>
Return-path: <linux-rt-users-owner@vger.kernel.org>
Received: from sinclair.provo.novell.com ([137.65.248.137]:48839 "EHLO
	sinclair.provo.novell.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
	with ESMTP id S1751610AbYDWNLL convert rfc822-to-8bit (ORCPT
	<rfc822;linux-rt-users@vger.kernel.org>);
	Wed, 23 Apr 2008 09:11:11 -0400
In-Reply-To: <Pine.LNX.4.58.0804230854210.23815@gandalf.stny.rr.com>
Content-Disposition: inline
Sender: linux-rt-users-owner@vger.kernel.org
List-ID: <linux-rt-users.vger.kernel.org>

>>> On Wed, Apr 23, 2008 at  8:58 AM, in message
<Pine.LNX.4.58.0804230854210.23815@gandalf.stny.rr.com>, Steven Rostedt
<rostedt@goodmis.org> wrote: 


> 
> I'm not giving an Ack on this patch (not yet). My main concern here is
> that this is performing on a verge of policy change. As you stated, this
> is a known issue. One that can be avoided by giving RT tasks different
> priorities.  It is known that two tasks with the same priority fighting
> for the same CPUS (even if one is migratable and one is not) has
> non-deterministic behaviour.
> 
> This patch needs a bit of running through the grind to see what effects it
> has before going in.

Perfectly reasonable stance, Steve.  Thanks for the review!

-Greg