Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933914AbaGRNFq (ORCPT ); Fri, 18 Jul 2014 09:05:46 -0400 Received: from wolff.to ([98.103.208.27]:55979 "HELO wolff.to" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S965275AbaGRNC7 (ORCPT ); Fri, 18 Jul 2014 09:02:59 -0400 Date: Fri, 18 Jul 2014 08:01:26 -0500 From: Bruno Wolff III To: Peter Zijlstra Cc: Dietmar Eggemann , Josh Boyer , "mingo@redhat.com" , "linux-kernel@vger.kernel.org" Subject: Re: Scheduler regression from caffcdd8d27ba78730d5540396ce72ad022aff2c Message-ID: <20140718130126.GA2401@wolff.to> References: <53C6CFCC.2050300@arm.com> <20140716195414.GA16401@wolff.to> <53C7084C.7090104@arm.com> <20140717030947.GA17889@wolff.to> <53C79013.1020808@arm.com> <20140717090452.GH19379@twins.programming.kicks-ass.net> <53C7B247.2070309@arm.com> <20140717123502.GL19379@twins.programming.kicks-ass.net> <20140718053449.GA2039@wolff.to> <20140718101633.GP9918@twins.programming.kicks-ass.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Disposition: inline In-Reply-To: <20140718101633.GP9918@twins.programming.kicks-ass.net> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jul 18, 2014 at 12:16:33 +0200, Peter Zijlstra wrote: >So it looks like the actual domain tree is broken, and not what we >assumed it was. > >Could I bother you to run with the below instead? It should also print >out the sched domain masks so we don't need to guess about them. The full dmesg output is at: https://bugzilla.kernel.org/attachment.cgi?id=143381 >(make sure you have CONFIG_SCHED_DEBUG=y otherwise it will not build) > >> I also booted with early printk=keepsched_debug as requested by Dietmar. > >can you make that: sched_debug ? I think I've fixed that. I think the part you are most interested in contains the following: [ 0.252280] smpboot: Total of 4 processors activated (21438.11 BogoMIPS) [ 0.253058] __sdt_alloc: allocated f255b020 with cpus: [ 0.253146] __sdt_alloc: allocated f255b0e0 with cpus: [ 0.253227] __sdt_alloc: allocated f255b120 with cpus: [ 0.253308] __sdt_alloc: allocated f255b160 with cpus: [ 0.253390] __sdt_alloc: allocated f255b1a0 with cpus: [ 0.253471] __sdt_alloc: allocated f255b1e0 with cpus: [ 0.253551] __sdt_alloc: allocated f255b220 with cpus: [ 0.253632] __sdt_alloc: allocated f255b260 with cpus: [ 0.254009] __sdt_alloc: allocated f255b2a0 with cpus: [ 0.254092] __sdt_alloc: allocated f255b2e0 with cpus: [ 0.254181] __sdt_alloc: allocated f255b320 with cpus: [ 0.254262] __sdt_alloc: allocated f255b360 with cpus: [ 0.254350] build_sched_domain: cpu: 0 level: SMT cpu_map: 0-3 tl->mask: 0,2 [ 0.254433] build_sched_domain: cpu: 0 level: MC cpu_map: 0-3 tl->mask: 0 [ 0.254516] build_sched_domain: cpu: 0 level: DIE cpu_map: 0-3 tl->mask: 0-3 [ 0.254600] build_sched_domain: cpu: 1 level: SMT cpu_map: 0-3 tl->mask: 1,3 [ 0.254683] build_sched_domain: cpu: 1 level: MC cpu_map: 0-3 tl->mask: 1 [ 0.254766] build_sched_domain: cpu: 1 level: DIE cpu_map: 0-3 tl->mask: 0-3 [ 0.254850] build_sched_domain: cpu: 2 level: SMT cpu_map: 0-3 tl->mask: 0,2 [ 0.254932] build_sched_domain: cpu: 2 level: MC cpu_map: 0-3 tl->mask: 2 [ 0.255005] build_sched_domain: cpu: 2 level: DIE cpu_map: 0-3 tl->mask: 0-3 [ 0.255091] build_sched_domain: cpu: 3 level: SMT cpu_map: 0-3 tl->mask: 1,3 [ 0.255176] build_sched_domain: cpu: 3 level: MC cpu_map: 0-3 tl->mask: 3 [ 0.255260] build_sched_domain: cpu: 3 level: DIE cpu_map: 0-3 tl->mask: 0-3 [ 0.256006] build_sched_groups: got group f255b020 with cpus: [ 0.256089] build_sched_groups: got group f255b120 with cpus: [ 0.256171] build_sched_groups: got group f255b1a0 with cpus: [ 0.256252] build_sched_groups: got group f255b2a0 with cpus: [ 0.256333] build_sched_groups: got group f255b2e0 with cpus: [ 0.256414] build_sched_groups: got group f255b320 with cpus: [ 0.256495] build_sched_groups: got group f255b360 with cpus: [ 0.256576] build_sched_groups: got group f255b0e0 with cpus: [ 0.256657] build_sched_groups: got group f255b160 with cpus: [ 0.256740] build_sched_groups: got group f255b1e0 with cpus: [ 0.256821] build_sched_groups: FAIL [ 0.257004] build_sched_groups: got group f255b1a0 with cpus: 0 [ 0.257087] build_sched_groups: FAIL [ 0.257167] build_sched_groups: got group f255b1e0 with cpus: 1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/