From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 27328C43334 for ; Sun, 17 Jul 2022 18:26:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232096AbiGQS0G (ORCPT ); Sun, 17 Jul 2022 14:26:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39490 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229544AbiGQS0E (ORCPT ); Sun, 17 Jul 2022 14:26:04 -0400 Received: from mga06.intel.com (mga06b.intel.com [134.134.136.31]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2A04912613; Sun, 17 Jul 2022 11:26:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1658082362; x=1689618362; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=Lev7I62R+ZkqbUI7VHug5zWd6VrLgETsZS6J/rKaTh4=; b=fd4mhEviOKTZdNKWjWz1adon0TUAyVZ2rxS7mx8hgFyz8wB3rkAURtJc 4fiyw/uxVwqVi5BTteV26NzWeB8aXuxRC2/61ei022S/qm3jCoEDLje7Q bZbQJlkwi3BC1s60Hlmd5PCKL7BgEB0CDYUWfg8Sd3foC9BCE0xkJ5xWw oUTMpom5BL5h+eswURHSuoAG1fe52BuH0sY9Rp5ZNy75tdTH82sK9Np9W wAZQnTdWEF6e7sLnqLk3DJBrFo3FLJKveCZxNIxVDheyqgerE8cssI+10 Z6yP0AdeqAKB+KeuQDcdOzqqUGGuscmyWCJts1quov4UfMCf4zO6v2a1W w==; X-IronPort-AV: E=McAfee;i="6400,9594,10411"; a="347770619" X-IronPort-AV: E=Sophos;i="5.92,279,1650956400"; d="scan'208";a="347770619" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Jul 2022 11:26:01 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.92,279,1650956400"; d="scan'208";a="624455965" Received: from lkp-server02.sh.intel.com (HELO ff137eb26ff1) ([10.239.97.151]) by orsmga008.jf.intel.com with ESMTP; 17 Jul 2022 11:25:59 -0700 Received: from kbuild by ff137eb26ff1 with local (Exim 4.95) (envelope-from ) id 1oD8xq-0003ZM-NH; Sun, 17 Jul 2022 18:25:58 +0000 Date: Mon, 18 Jul 2022 02:25:39 +0800 From: kernel test robot To: Zqiang , paulmck@kernel.org, frederic@kernel.org, quic_neeraju@quicinc.com, joel@joelfernandes.org Cc: llvm@lists.linux.dev, kbuild-all@lists.01.org, rcu@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] rcu-tasks: Make RCU Tasks Trace checking for userspace execution Message-ID: <202207180246.5cKJdGrg-lkp@intel.com> References: <20220717143801.189865-1-qiang1.zhang@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220717143801.189865-1-qiang1.zhang@intel.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Zqiang, Thank you for the patch! Yet something to improve: [auto build test ERROR on paulmck-rcu/dev] [also build test ERROR on linus/master v5.19-rc6 next-20220715] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Zqiang/rcu-tasks-Make-RCU-Tasks-Trace-checking-for-userspace-execution/20220717-223556 base: https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev config: hexagon-randconfig-r041-20220717 (https://download.01.org/0day-ci/archive/20220718/202207180246.5cKJdGrg-lkp@intel.com/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 45067f8fbf61284839c739807c2da2e2505661eb) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/intel-lab-lkp/linux/commit/d078656cad783fefa6506b05e7dfd1ce43f23eb0 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Zqiang/rcu-tasks-Make-RCU-Tasks-Trace-checking-for-userspace-execution/20220717-223556 git checkout d078656cad783fefa6506b05e7dfd1ce43f23eb0 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot All errors (new ones prefixed by >>): In file included from kernel/rcu/tree.c:4638: >> kernel/rcu/tree_plugin.h:979:3: error: call to undeclared function 'rcu_tasks_trace_qs'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] rcu_tasks_trace_qs(current); ^ 1 error generated. vim +/rcu_tasks_trace_qs +979 kernel/rcu/tree_plugin.h 959 960 /* 961 * Check to see if this CPU is in a non-context-switch quiescent state, 962 * namely user mode and idle loop. 963 */ 964 static void rcu_flavor_sched_clock_irq(int user) 965 { 966 if (user || rcu_is_cpu_rrupt_from_idle()) { 967 968 /* 969 * Get here if this CPU took its interrupt from user 970 * mode or from the idle loop, and if this is not a 971 * nested interrupt. In this case, the CPU is in 972 * a quiescent state, so note it. 973 * 974 * No memory barrier is required here because rcu_qs() 975 * references only CPU-local variables that other CPUs 976 * neither access nor modify, at least not while the 977 * corresponding CPU is online. 978 */ > 979 rcu_tasks_trace_qs(current); 980 rcu_qs(); 981 } 982 } 983 -- 0-DAY CI Kernel Test Service https://01.org/lkp