From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932716AbdEUXUL (ORCPT ); Sun, 21 May 2017 19:20:11 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:44935 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S932689AbdEUXUJ (ORCPT ); Sun, 21 May 2017 19:20:09 -0400 Date: Sun, 21 May 2017 13:51:31 -0700 From: "Paul E. McKenney" To: kbuild test robot Cc: kbuild-all@01.org, linux-kernel@vger.kernel.org Subject: Re: [rcu:rcu/next 91/91] ftrace.c:undefined reference to `synchronize_rcu_tasks' Reply-To: paulmck@linux.vnet.ibm.com References: <201705220341.lHAAwWqS%fengguang.wu@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <201705220341.lHAAwWqS%fengguang.wu@intel.com> User-Agent: Mutt/1.5.21 (2010-09-15) X-TM-AS-GCONF: 00 x-cbid: 17052123-0044-0000-0000-000003340856 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00007098; HX=3.00000241; KW=3.00000007; PH=3.00000004; SC=3.00000212; SDB=6.00863727; UDB=6.00428699; IPR=6.00643507; BA=6.00005362; NDR=6.00000001; ZLA=6.00000005; ZF=6.00000009; ZB=6.00000000; ZP=6.00000000; ZH=6.00000000; ZU=6.00000002; MB=3.00015532; XFM=3.00000015; UTC=2017-05-21 23:20:01 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17052123-0045-0000-0000-0000076215CF Message-Id: <20170521205131.GI3956@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2017-05-21_21:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=0 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1703280000 definitions=main-1705210139 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, May 22, 2017 at 03:16:42AM +0800, kbuild test robot wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git rcu/next > head: f1b89dcf23ef0999fae8bbc34cc9eb3fe00bc677 > commit: f1b89dcf23ef0999fae8bbc34cc9eb3fe00bc677 [91/91] rcu: Remove Tasks RCU > config: x86_64-acpi-redef (attached as .config) > compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901 > reproduce: > git checkout f1b89dcf23ef0999fae8bbc34cc9eb3fe00bc677 > # save the attached .config to linux build tree > make ARCH=x86_64 > > All errors (new ones prefixed by >>): > > kernel/built-in.o: In function `ftrace_shutdown': > >> ftrace.c:(.text+0x9142d): undefined reference to `synchronize_rcu_tasks' Expected behavior, so I should have used "experimental". I will be providing a new implementation of synchronize_rcu_tasks() "real soon now". Thanx, Paul