From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755514AbcGZOSK (ORCPT ); Tue, 26 Jul 2016 10:18:10 -0400 Received: from Galois.linutronix.de ([146.0.238.70]:43596 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753564AbcGZOSI (ORCPT ); Tue, 26 Jul 2016 10:18:08 -0400 Date: Tue, 26 Jul 2016 16:15:50 +0200 (CEST) From: Thomas Gleixner To: Jon Hunter cc: rcochran@linutronix.de, Anna-Maria Gleixner , LKML , Peter Zijlstra , Ingo Molnar , Sebastian Andrzej Siewior , "linux-tegra@vger.kernel.org" Subject: Re: [patch 61/66] timers: Convert to hotplug state machine In-Reply-To: <0b5a7bb5-6670-606b-e33d-63cd8b0fcedd@nvidia.com> Message-ID: References: <20160711122450.923603742@linutronix.de> <20160711122535.775201614@linutronix.de> <7d37714e-b072-ee90-f14f-364f4fd01f0d@nvidia.com> <20160725153543.GB10939@linutronix.de> <0b5a7bb5-6670-606b-e33d-63cd8b0fcedd@nvidia.com> User-Agent: Alpine 2.11 (DEB 23 2013-08-11) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Jon, On Tue, 26 Jul 2016, Jon Hunter wrote: > On 25/07/16 16:35, rcochran@linutronix.de wrote: > > Just to be sure, this problem didn't exist before the HP rework, that > > is, suspend worked fine with and without CONFIG_PREEMPT, right? > > Correct. I test suspend on Tegra with both multi_v7_defconfig > (CONFIG_PREEMPT disabled) and tegra_defconfig (CONFIG_PREEMPT enabled). > Looking at the git history for these configs I don't see any changes in > this regard since they were added (unless some underlying Kconfig files > have changed). Is that fully reproducible, i.e on every suspend? Can you please check whether this issue happens with just cpu offline as well? I.e. set a cpu (or all non-boot cpus) offline, wait long enough that the stall detector can trigger, set the cpu(s) online again and repeat. Thanks tglx