From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757985AbaISXDP (ORCPT ); Fri, 19 Sep 2014 19:03:15 -0400 Received: from bombadil.infradead.org ([198.137.202.9]:50359 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751542AbaISXDO (ORCPT ); Fri, 19 Sep 2014 19:03:14 -0400 Date: Sat, 20 Sep 2014 01:03:08 +0200 From: Peter Zijlstra To: Dave Hansen Cc: mingo@kernel.org, hpa@linux.intel.com, brice.goglin@gmail.com, bp@alien8.de, linux-kernel@vger.kernel.org, dave.hansen@linux.intel.com Subject: Re: [RFC][PATCH 6/6] sched: consolidate config options Message-ID: <20140919230308.GK2832@worktop.localdomain> References: <20140917223310.026BCC2C@viggo.jf.intel.com> <20140917223320.2FF9CF11@viggo.jf.intel.com> <20140918172944.GT2840@worktop.localdomain> <541C80E1.9040601@sr71.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <541C80E1.9040601@sr71.net> User-Agent: Mutt/1.5.22.1 (2013-10-16) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Sep 19, 2014 at 12:15:45PM -0700, Dave Hansen wrote: > On 09/18/2014 10:29 AM, Peter Zijlstra wrote: > >> > +config SCHED_BOOK > >> > + def_bool y > >> > + prompt "Book scheduler support" > >> > + depends on ARCH_ENABLE_SCHED_BOOK > >> > + select SCHED_MC > >> > + help > >> > + Book scheduler support improves the CPU scheduler's decision making > >> > + when dealing with machines that have several books. > >> > + > >> > + Currenltly only used on s390 which has only a single NUMA node. > >> > + Books are collections of CPUs that are grouped similarly to a NUMA > >> > + node, but without the same memory properites that NUMA nodes have. > > Nothing outside of s390 knows about SCHED_BOOK, it doesn't make sense to > > have that here. > > By sticking all of them together, my hope was that folks who were going > to add a topology level could see all of the existing options in a > single place. > > But, just say the word and I'll yank it out and repost. Yeah, I think its best to leave it a s390 private afair.