From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756135AbcIUNpe (ORCPT ); Wed, 21 Sep 2016 09:45:34 -0400 Received: from smtprelay0071.hostedemail.com ([216.40.44.71]:44131 "EHLO smtprelay.hostedemail.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1755714AbcIUNpc (ORCPT ); Wed, 21 Sep 2016 09:45:32 -0400 X-Session-Marker: 726F737465647440676F6F646D69732E6F7267 X-Spam-Summary: 2,0,0,,d41d8cd98f00b204,rostedt@goodmis.org,:::::::::::::::,RULES_HIT:41:355:379:541:599:800:960:973:982:988:989:1260:1277:1311:1313:1314:1345:1359:1437:1515:1516:1518:1534:1538:1568:1593:1594:1711:1714:1730:1747:1777:1792:2393:2553:2559:2562:3138:3139:3140:3141:3142:3622:3865:3867:3868:3871:3872:3873:3874:5007:6261:7875:9040:10004:10400:10848:10967:11026:11232:11658:11914:12296:12740:12760:13069:13311:13357:13439:14180:14181:14659:14721:21060:21080:30054:30090:30091,0,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: land90_4d28f2352190e X-Filterd-Recvd-Size: 1760 Date: Wed, 21 Sep 2016 09:45:29 -0400 From: Steven Rostedt To: "Bean Huo (beanhuo)" Cc: "Zoltan Szubbocsev (zszubbocsev)" , "catalin.marinas@arm.com" , "will.deacon@arm.com" , "rfi@lists.rocketboards.org" , "linux-kernel@vger.kernel.org" , "mingo@redhat.com" , "linux-arm-kernel@lists.infradead.org" Subject: Re: ftrace function_graph causes system crash Message-ID: <20160921094529.6802e97e@gandalf.local.home> In-Reply-To: <0e38f79fdc1f4671943da74764c15050@SIWEX5A.sing.micron.com> References: <7d0e88fff8e64591ac31be3adbbf763c@SIWEX5A.sing.micron.com> <20160920100716.131d3647@gandalf.local.home> <0e38f79fdc1f4671943da74764c15050@SIWEX5A.sing.micron.com> 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 Wed, 21 Sep 2016 07:50:58 +0000 "Bean Huo (beanhuo)" wrote: > > Hi, Steve > Thanks very much! This is a very useful trace tool, I now know the problem function, > It is gt_counter_read, if not trace this function, ftrace function_graph work well. > Do you know now how to deeply debug and trace which line is wrong through Ftrace? Hmm, maybe I should add this into the scripts directory. Yeah, I should do that. -- Steve