From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755278AbcFQQ0N (ORCPT ); Fri, 17 Jun 2016 12:26:13 -0400 Received: from smtprelay0103.hostedemail.com ([216.40.44.103]:34752 "EHLO smtprelay.hostedemail.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752024AbcFQQ0L (ORCPT ); Fri, 17 Jun 2016 12:26:11 -0400 X-Session-Marker: 726F737465647440676F6F646D69732E6F7267 X-Spam-Summary: 2,0,0,,d41d8cd98f00b204,rostedt@goodmis.org,:::::::::::::::::::::::,RULES_HIT:41:355:379:541:599:800:960:973:988:989:1260:1277:1311:1313:1314:1345:1359:1437:1515:1516:1518:1534:1540:1593:1594:1711:1730:1747:1777:1792:1801:2393:2553:2559:2562:3138:3139:3140:3141:3142:3352:3622:3865:3867:3871:3874:4250:4605:5007:6119:6120:6261:6742:7875:7903:10004:10400:10848:10967:11026:11232:11473:11658:11914:12043:12517:12519:12740:13069:13311:13357:13439:14096:14097:14181:14581:14659:14721:21080:30054:30064:30090:30091,0,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: roof87_6fa9669af5449 X-Filterd-Recvd-Size: 2007 Date: Fri, 17 Jun 2016 12:26:06 -0400 From: Steven Rostedt To: Chunyan Zhang Cc: mathieu.poirier@linaro.org, alexander.shishkin@linux.intel.com, mingo@redhat.com, mike.leach@arm.com, tor@ti.com, maxime.coquelin@st.com, philippe.langlais@st.com, nicolas.guion@st.com, zhang.lyra@gmail.com, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: Re: [RFC PATCH 4/4] stm: Mark the functions of writing buffer with notrace Message-ID: <20160617122606.417cf5a0@gandalf.local.home> In-Reply-To: <1464779939-24986-5-git-send-email-zhang.chunyan@linaro.org> References: <1464779939-24986-1-git-send-email-zhang.chunyan@linaro.org> <1464779939-24986-5-git-send-email-zhang.chunyan@linaro.org> 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, 1 Jun 2016 19:18:59 +0800 Chunyan Zhang wrote: > If CONFIG_STM_FTRACE is selected, Function trace data would be > writen to STM buffer, all functions that related to writing data > packets to STM buffer should be marked 'notrace' to avoid being > traced by Ftrace, otherwise the program would stall into an endless loop. > > Signed-off-by: Chunyan Zhang > --- > drivers/hwtracing/coresight/coresight-stm.c | 2 +- > drivers/hwtracing/intel_th/sth.c | 11 +++++++---- > drivers/hwtracing/stm/core.c | 7 ++++--- > drivers/hwtracing/stm/dummy_stm.c | 2 +- > include/linux/stm.h | 4 ++-- > 5 files changed, 15 insertions(+), 11 deletions(-) Acked-by: Steven Rostedt -- Steve