From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.12]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E99A5187848 for ; Sat, 8 Feb 2025 06:00:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.12 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738994414; cv=none; b=fWKHuYdlT9dbtZM9sqhDuQHhlFGDOY5or60Z+ImL5Tn2oFX1dM/8FGCv0dVgTbtOuxnTQhSTKqtvHzt9tu2OLg1SXwB13bdItH3dSgEvH1ZOEzyltg5ZuCnKmHVw1J30+mQJMPi6N+y5IhVD6+sg1//7hdWmB+l+TgCC4cZMU90= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738994414; c=relaxed/simple; bh=v8GABo1UwktwEyJJqWmZGaAZAFNtICPfnzaZpX+Utb4=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=Ab6HhK8p8XJyRTQ9NHh9KxJqcyXfqbuTZSyAoOIzHi7DXHJCxQM7au9LUpKItZtBs8wgovRFdj8P9FnSSJR6nrDDaJBhNvpgTjpHx+3wbZwCCEk+UztGtraAVcYLOPLoXilWvCur58HZCaxypycBAT+aAFI+pe8twrtjIdAspcs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=mcrpZJ7C; arc=none smtp.client-ip=198.175.65.12 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="mcrpZJ7C" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1738994413; x=1770530413; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=v8GABo1UwktwEyJJqWmZGaAZAFNtICPfnzaZpX+Utb4=; b=mcrpZJ7Ccg28nxTBwszYkOCq0fzszL/kywMvOZ07ndWM+UpGfp80ByW7 LC0IObYwJsuShjseCl6Ka8wVKRcVOxLPMqoWFgdbmQ6APpzGwxb9fOXIV DAIYbXz5SMljYcmkInGYEtg7k1vZ6eAvlHMqW35Hsfi9yP9a7RlToBcB1 rE+rhxUqeIVt9cYSo4GZy5Tjufd+Fr/nwUfSH7OkjrykbnpWPdq13MlhM VDOey2SuNmKGvo9r53pkMtpDzPyWRF6MCGcxrMF5RYOy+roFZZFY66ExB sgs7eAw4AM9NEzXbMdhB2kVP5+BLIBVytu8LEQZqELYMXljufbQlLfmKE Q==; X-CSE-ConnectionGUID: 2yubInMvSK+1VqFRvVHh8g== X-CSE-MsgGUID: iEmTMXiRRUqY8EZwySOyVg== X-IronPort-AV: E=McAfee;i="6700,10204,11338"; a="51028713" X-IronPort-AV: E=Sophos;i="6.13,269,1732608000"; d="scan'208";a="51028713" Received: from fmviesa002.fm.intel.com ([10.60.135.142]) by orvoesa104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Feb 2025 22:00:12 -0800 X-CSE-ConnectionGUID: Kz5/PTaSRZeW6SsyjxyI+g== X-CSE-MsgGUID: aj7zVIGPTeudqEkQRkDA9g== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.12,224,1728975600"; d="scan'208";a="134956830" Received: from lkp-server01.sh.intel.com (HELO d63d4d77d921) ([10.239.97.150]) by fmviesa002.fm.intel.com with ESMTP; 07 Feb 2025 22:00:09 -0800 Received: from kbuild by d63d4d77d921 with local (Exim 4.96) (envelope-from ) id 1tgdss-000zbz-2j; Sat, 08 Feb 2025 06:00:06 +0000 Date: Sat, 8 Feb 2025 13:59:24 +0800 From: kernel test robot To: zihan zhou <15645113830zzh@gmail.com> Cc: oe-kbuild-all@lists.linux.dev, bsegall@google.com, dietmar.eggemann@arm.com, juri.lelli@redhat.com, linux-kernel@vger.kernel.org, mgorman@suse.de, mingo@redhat.com, peterz@infradead.org, rostedt@goodmis.org, vincent.guittot@linaro.org, vschneid@redhat.com Subject: Re: [PATCH V2 2/2] sched: Reduce the default slice to avoid tasks getting an extra tick Message-ID: <202502081304.ujyIUca2-lkp@intel.com> References: <20250207062402.33725-1-15645113830zzh@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250207062402.33725-1-15645113830zzh@gmail.com> Hi zihan, kernel test robot noticed the following build errors: [auto build test ERROR on tip/sched/core] [also build test ERROR on peterz-queue/sched/core linus/master v6.14-rc1 next-20250207] [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/zihan-zhou/sched-Reduce-the-default-slice-to-avoid-tasks-getting-an-extra-tick/20250207-142556 base: tip/sched/core patch link: https://lore.kernel.org/r/20250207062402.33725-1-15645113830zzh%40gmail.com patch subject: [PATCH V2 2/2] sched: Reduce the default slice to avoid tasks getting an extra tick config: x86_64-randconfig-072-20250208 (https://download.01.org/0day-ci/archive/20250208/202502081304.ujyIUca2-lkp@intel.com/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250208/202502081304.ujyIUca2-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202502081304.ujyIUca2-lkp@intel.com/ All errors (new ones prefixed by >>): In file included from kernel/sched/build_utility.c:72: kernel/sched/debug.c: In function 'sched_base_slice_write': >> kernel/sched/debug.c:193:9: error: implicit declaration of function 'sched_update_scaling'; did you mean 'sched_update_numa'? [-Werror=implicit-function-declaration] 193 | sched_update_scaling(); | ^~~~~~~~~~~~~~~~~~~~ | sched_update_numa cc1: some warnings being treated as errors vim +193 kernel/sched/debug.c 168 169 170 static ssize_t sched_base_slice_write(struct file *filp, const char __user *ubuf, 171 size_t cnt, loff_t *ppos) 172 { 173 char buf[16]; 174 unsigned int base_slice; 175 176 if (cnt > 15) 177 cnt = 15; 178 179 if (copy_from_user(&buf, ubuf, cnt)) 180 return -EFAULT; 181 buf[cnt] = '\0'; 182 183 if (kstrtouint(buf, 10, &base_slice)) 184 return -EINVAL; 185 186 187 base_slice = clamp_t(u64, base_slice, 188 NSEC_PER_MSEC/10, /* HZ=1000 * 10 */ 189 NSEC_PER_MSEC*100); /* HZ=100 / 10 */ 190 191 sysctl_sched_base_slice = base_slice; 192 > 193 sched_update_scaling(); 194 195 *ppos += cnt; 196 return cnt; 197 } 198 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki