From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id S1752690Ab1I1Ej2 (ORCPT <rfc822;w@1wt.eu>);
	Wed, 28 Sep 2011 00:39:28 -0400
Received: from e9.ny.us.ibm.com ([32.97.182.139]:45727 "EHLO e9.ny.us.ibm.com"
	rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP
	id S1751572Ab1I1Ej1 (ORCPT <rfc822;linux-kernel@vger.kernel.org>);
	Wed, 28 Sep 2011 00:39:27 -0400
Date: Wed, 28 Sep 2011 10:09:21 +0530
From: Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>
To: Venki Pallipadi <venki@google.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>, Paul Turner <pjt@google.com>,
        Ingo Molnar <mingo@elte.hu>,
        Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com>,
        Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH v1] sched: fix nohz idle load balancer issues
Message-ID: <20110928043921.GC8593@linux.vnet.ibm.com>
Reply-To: Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>
References: <20110926115049.GA22604@linux.vnet.ibm.com>
 <CABeCy1YXKR89_uQm_XAyNJHPHkL+6JKxa-C+8Z_9ox7b_k2scQ@mail.gmail.com>
 <20110928043427.GI4357@linux.vnet.ibm.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=iso-8859-1
Content-Disposition: inline
In-Reply-To: <20110928043427.GI4357@linux.vnet.ibm.com>
User-Agent: Mutt/1.5.21 (2010-09-15)
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

* Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com> [2011-09-28 10:04:27]:

> unless we want to go for more sophisticated like a sorted list of
> rq->next_balance in a rb-tree

Given that this list will need to be global (and not per-cpu) and it will need 
to be updated reqularly (even when cpus are busy and as they update their 
rq->next_balance), that will probably not fly!

- vatsa