From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757046AbcEaJXV (ORCPT ); Tue, 31 May 2016 05:23:21 -0400 Received: from merlin.infradead.org ([205.233.59.134]:48057 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756862AbcEaJXU (ORCPT ); Tue, 31 May 2016 05:23:20 -0400 Date: Tue, 31 May 2016 11:23:14 +0200 From: Peter Zijlstra To: Yuyang Du Cc: mingo@kernel.org, linux-kernel@vger.kernel.org, umgwanakikbuti@gmail.com, bsegall@google.com, pjt@google.com, morten.rasmussen@arm.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com Subject: Re: [RFC PATCH 2/2] sched: Remove SD_WAKE_AFFINE flag and replace it with SD_BALANCE_WAKE Message-ID: <20160531092314.GU3192@twins.programming.kicks-ass.net> References: <1464657098-24880-1-git-send-email-yuyang.du@intel.com> <1464657098-24880-3-git-send-email-yuyang.du@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1464657098-24880-3-git-send-email-yuyang.du@intel.com> User-Agent: Mutt/1.5.21 (2012-12-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, May 31, 2016 at 09:11:38AM +0800, Yuyang Du wrote: > SD_BALANCE_{FORK|EXEC|WAKE} flags are for select_task_rq() to select a > CPU to run a new task or a waking task. SD_WAKE_AFFINE is a flag to > try selecting the waker CPU to run the waking task. > > SD_BALANCE_WAKE is not a sched_domain flag, but SD_WAKE_AFFINE is. No, SD_BALANCE_{FORK,EXEC,WAKE} are very much sched_domain flags. They indicate how wide we should look to place tasks on these events.