From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753886AbbE1PPm (ORCPT ); Thu, 28 May 2015 11:15:42 -0400 Received: from smtprelay0079.hostedemail.com ([216.40.44.79]:43049 "EHLO smtprelay.hostedemail.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753760AbbE1PPd convert rfc822-to-8bit (ORCPT ); Thu, 28 May 2015 11:15:33 -0400 X-Session-Marker: 726F737465647440676F6F646D69732E6F7267 X-Spam-Summary: 2,0,0,,d41d8cd98f00b204,rostedt@goodmis.org,:::::::::::::,RULES_HIT:41:152:355:379:541:599:800:960:969:973:988:989:1260:1277:1311:1313:1314:1345:1359:1437:1513:1515:1516:1518:1521:1534:1542:1593:1594:1711:1730:1747:1777:1792:2194:2199:2393:2553:2559:2562:2904:3138:3139:3140:3141:3142:3354:3622:3865:3866:3867:3868:3870:3871:3874:4250:4321:4605:5007:6119:6261:7807:7875:7903:7974:8509:8660:10004:10400:10848:10967:11026:11232:11473:11658:11914:12043:12294:12296:12438:12517:12519:12555:12663:12740:13148:13230:13618:14096:14097:21080,0,RBL:none,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:fn,MSBL:0,DNSBL:none,Custom_rules:0:0:0 X-HE-Tag: wind36_132754550845d X-Filterd-Recvd-Size: 3279 Date: Thu, 28 May 2015 11:15:30 -0400 From: Steven Rostedt To: Paul Gortmaker Cc: LKML , linux-rt-users , Thomas Gleixner , Carsten Emde , John Kacur , Sebastian Andrzej Siewior Subject: Re: [ANNOUNCE] 3.14.39-rt38 Message-ID: <20150528111530.2c885946@gandalf.local.home> In-Reply-To: <55672ED6.4070504@windriver.com> References: <20150520105535.63704e6b@gandalf.local.home> <55672ED6.4070504@windriver.com> X-Mailer: Claws Mail 3.11.1 (GTK+ 2.24.25; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 28 May 2015 11:05:58 -0400 Paul Gortmaker wrote: > On 15-05-20 10:55 AM, Steven Rostedt wrote: > > > > Dear RT Folks, > > > > I'm pleased to announce the 3.14.39-rt38 stable release. > > [...] > > > > > Changes from v3.14.39-rt37: > > > > --- > > > > Marcelo Tosatti (2): > > KVM: lapic: mark LAPIC timer handler as irqsafe > > KVM: use simple waitqueue for vcpu->wq > > > > Mike Galbraith (2): > > hotplug: Use set_cpus_allowed_ptr() in sync_unplug_thread() > > rt, nohz_full: fix nohz_full for PREEMPT_RT_FULL > > > > Sebastian Andrzej Siewior (1): > > kernel/irq_work: fix no_hz deadlock > > Seems we can't use this commit above as-is on 3.14 (and earlier?) > since we'll get this: > > kernel/time/tick-sched.c: In function ‘can_stop_full_tick’: > kernel/time/tick-sched.c:183:2: error: implicit declaration of function ‘arch_irq_work_has_interrupt’ [-Werror=implicit-function-declaration] > if (!arch_irq_work_has_interrupt()) { > ^ > cc1: some warnings being treated as errors > make[2]: *** [kernel/time/tick-sched.o] Error 1 > > Problem arises because that fcn doesn't come in until 3.18+ with > the merge v3.18-rc1~114 (in the 2nd commit): > > git log --oneline --reverse v3.18-rc1~114^2 ^v3.18-rc1~114^ > a80e49e2cc31 nohz: Move nohz full init call to tick init > c5c38ef3d703 irq_work: Introduce arch_irq_work_has_interrupt() > 76a33061b932 irq_work: Force raised irq work to run on irq work interrupt > 3010279f0fc3 x86: Tell irq work about self IPI support > 09f6edd42421 arm: Tell irq work about self IPI support > 3631073659d0 arm64: Tell irq work about self IPI support > 4327b15f64b2 nohz: Consolidate nohz full init code > 9b01f5bf3999 nohz: nohz full depends on irq work self IPI support > > Not sure whether we want to backport more stuff or change the > original backport to not use arch_irq_work_has_interrupt... > > Config is basically a defconfig but with RT_FULL and NOHZ_FULL =y. Grumble, I need to add NOHZ_FULL to my test configs. OK, I'll have to look into this. Thanks for the report. -- Steve >