Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752827AbdCWKhh (ORCPT ); Thu, 23 Mar 2017 06:37:37 -0400 Received: from LGEAMRELO11.lge.com ([156.147.23.51]:38859 "EHLO lgeamrelo11.lge.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751490AbdCWKhg (ORCPT ); Thu, 23 Mar 2017 06:37:36 -0400 X-Original-SENDERIP: 156.147.1.121 X-Original-MAILFROM: byungchul.park@lge.com X-Original-SENDERIP: 165.244.249.26 X-Original-MAILFROM: byungchul.park@lge.com X-Original-SENDERIP: 10.177.222.33 X-Original-MAILFROM: byungchul.park@lge.com Date: Thu, 23 Mar 2017 19:36:51 +0900 From: Byungchul Park To: Peter Zijlstra CC: , , , , Subject: Re: [PATCH v3 3/3] sched/rt: Add support for SD_PREFER_SIBLING on find_lowest_rq() Message-ID: <20170323103651.GQ11100@X58A-UD3R> References: <1490235169-370-1-git-send-email-byungchul.park@lge.com> <1490235169-370-3-git-send-email-byungchul.park@lge.com> <20170323094445.qatkzhafbhpsm6vs@hirez.programming.kicks-ass.net> MIME-Version: 1.0 In-Reply-To: <20170323094445.qatkzhafbhpsm6vs@hirez.programming.kicks-ass.net> User-Agent: Mutt/1.5.21 (2010-09-15) X-MIMETrack: Itemize by SMTP Server on LGEKRMHUB06/LGE/LG Group(Release 8.5.3FP6|November 21, 2013) at 2017/03/23 19:37:27, Serialize by Router on LGEKRMHUB06/LGE/LG Group(Release 8.5.3FP6|November 21, 2013) at 2017/03/23 19:37:27, Serialize complete at 2017/03/23 19:37:27 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 395 Lines: 9 On Thu, Mar 23, 2017 at 10:44:45AM +0100, Peter Zijlstra wrote: > On Thu, Mar 23, 2017 at 11:12:49AM +0900, Byungchul Park wrote: > > It would be better to avoid pushing tasks to other cpu within > > a SD_PREFER_SIBLING domain, instead, get more chances to check other > > siblings. > > Did you forget to post the rt equivalent to patch 1? No. Fortunately, rt currently works as patch 1 does.