From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933322AbcFJQpb (ORCPT ); Fri, 10 Jun 2016 12:45:31 -0400 Received: from smtprelay0080.hostedemail.com ([216.40.44.80]:45252 "EHLO smtprelay.hostedemail.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751017AbcFJQpa (ORCPT ); Fri, 10 Jun 2016 12:45:30 -0400 X-Session-Marker: 726F737465647440676F6F646D69732E6F7267 X-Spam-Summary: 2,0,0,,d41d8cd98f00b204,rostedt@goodmis.org,:::::::::::::::::::,RULES_HIT:41:355:379:541:599:800:960:973:988:989:1260:1277:1311:1313:1314:1345:1359:1437:1515:1516:1518:1534:1538:1593:1594:1711:1714:1730:1747:1777:1792:2393:2553:2559:2562:2892:3138:3139:3140:3141:3142:3351:3622:3865:3867:3870:3871:3874:5007:6261:7875:10004:10400:10848:10967:11232:11658:11914:12517:12519:12740:13069:13076:13311:13357:13439:14181:14659:21080:30054:30075:30090:30091,0,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,LFtime:2,LUA_SUMMARY:none X-HE-Tag: week05_1282c5863d44c X-Filterd-Recvd-Size: 1896 Date: Fri, 10 Jun 2016 12:45:25 -0400 From: Steven Rostedt To: Sebastian Andrzej Siewior Cc: alison@peloton-tech.com, LKML , linux-rt-users , netdev , Thomas Gleixner , Peter Zijlstra , Clark Williams , Eric Dumazet , David Miller Subject: Re: [PATCH][RT] netpoll: Always take poll_lock when doing polling Message-ID: <20160610124525.32cac2e0@gandalf.local.home> In-Reply-To: <8582eb37-3b5b-ee7e-3a67-8f4609b0ac3f@linutronix.de> References: <20160526195641.6c26e979@gandalf.local.home> <20160602161235.GA12971@linutronix.de> <20160604071131.08d449db@grimm.local.home> <20160610155717.GB10775@linutronix.de> <20160610121118.03f281e8@gandalf.local.home> <8582eb37-3b5b-ee7e-3a67-8f4609b0ac3f@linutronix.de> X-Mailer: Claws Mail 3.13.2 (GTK+ 2.24.30; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 10 Jun 2016 18:20:22 +0200 Sebastian Andrzej Siewior wrote: > > We actually triggered a starvation due to this. I was just seeing if > > Alison hit the same issue we did in our tests. > > Okay. Didn't get this information from him. But this is only because > the softirqs not running in ksoftirqd, right? Right, I think we supplied this patch before we added the one that would push repeated softirqs to ksoftirqd. We probably should see if that patch alone fixes our issue. -- Steve