Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S939854AbdDTCds (ORCPT ); Wed, 19 Apr 2017 22:33:48 -0400 Received: from smtprelay0201.hostedemail.com ([216.40.44.201]:36269 "EHLO smtprelay.hostedemail.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S939815AbdDTCdq (ORCPT ); Wed, 19 Apr 2017 22:33:46 -0400 X-Session-Marker: 726F737465647440676F6F646D69732E6F7267 X-Spam-Summary: 2,0,0,,d41d8cd98f00b204,rostedt@goodmis.org,:::::::::::::::::::,RULES_HIT:41:196:355:379:541:599:800:960:973:988:989:1260:1277:1311:1313:1314:1345:1359:1437:1515:1516:1518:1534:1540:1593:1594:1711:1714:1730:1747:1777:1792:2393:2553:2559:2562:3138:3139:3140:3141:3142:3351:3622:3865:3866:3867:3868:3870:3871:3873:3874:4321:4605:5007:6261:7514:7875:7903:7974:9121:10004:10400:10848:10967:11026:11232:11473:11658:11914:12043:12296:12438:12555:12740:12760:12895:12986:13069:13311:13357:13439:14181:14659:14721:21080:21325:30054:30090:30091,0,RBL:none,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:,MSBL:0,DNSBL:none,Custom_rules:0:0:0,LFtime:2,LUA_SUMMARY:none X-HE-Tag: cry26_5abc5842b1411 X-Filterd-Recvd-Size: 2051 Date: Wed, 19 Apr 2017 22:33:42 -0400 From: Steven Rostedt To: Tyrel Datwyler Cc: Michael Ellerman , Frank Rowand , Tyrel Datwyler , robh+dt@kernel.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, nfont@linux.vnet.ibm.com, mingo@redhat.com Subject: Re: [PATCH] of: introduce event tracepoints for dynamic device_node lifecyle Message-ID: <20170419223342.0bbe2593@grimm.local.home> In-Reply-To: <1d51a229-612b-bf09-93d5-6e43b476e2cf@gmail.com> References: <1492475525-10827-1-git-send-email-tyreld@linux.vnet.ibm.com> <58F6AA35.2040902@gmail.com> <87efwp6v4e.fsf@concordia.ellerman.id.au> <1d51a229-612b-bf09-93d5-6e43b476e2cf@gmail.com> X-Mailer: Claws Mail 3.14.1 (GTK+ 2.24.31; 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 Content-Length: 811 Lines: 24 On Wed, 19 Apr 2017 16:27:10 -0700 Tyrel Datwyler wrote: > # echo stacktrace > /sys/kernel/debug/tracing/trace_options > # cat trace | grep -A6 "/pci@800000020000018" Just to let you know that there is now stacktrace event triggers, where you don't need to stacktrace all events, you can pick and choose. And even filter the stack trace on specific fields of the event. # cd /sys/kernel/debug/tracing # echo "stacktrace if common_pid == $$ && reason == 3" \ > events/tlb/tlb_flush/trigger # cat trace bash-1103 [003] ...1 1290.100133: tlb_flush: pages:-1 reason:local mm shootdown (3) bash-1103 [003] ...2 1290.100140: => copy_process.part.39 => _do_fork => SyS_clone => do_syscall_64 => return_from_SYSCALL_64 -- Steve