From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=192.198.163.19 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794127648; b=WKV5FLez0ykaHpsQ5+x//Zx6PiLh5v9/fsFoGtHTBhNZWL5ShHA+Yka700zre4P/WYW7 cHV76sRVwoQbP3eh2MHaRN94lCxD733pVaN98pNMs4GrLEKche43PVK5/Bo6+z98wqyLN pyMZTrpzomWUAhwTymyL9iiMsSYN8MKCn+2C0We8L/Yi/vExNlUZtn+pWbuOyYEIOrG/P k/zWR0YzfVntZ1VmUL9+hBETvHnNIaj6WijCS0lX5j1TT88LN7kSYIWcjjJFnduTRkBa3 ltbR6x1gIgFaZsLZQ6H6SAI6y8lCDJCmu42jiLUlrU5u/WzfmKDQ/+R2tnWZjOvgiIA== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794127648; h=DMARC-Filter:DKIM-Signature:X-CSE-ConnectionGUID:X-CSE-MsgGUID: X-IronPort-AV:X-IronPort-AV:Received:X-CSE-ConnectionGUID: X-CSE-MsgGUID:X-ExtLoop1:X-IronPort-AV:Received:Date:From:To:Cc: Subject:Message-ID:MIME-Version:Content-Type:Content-Disposition: Content-Transfer-Encoding; bh=+vIKb+5UC4MoJoAuiRAh5ZXkksDm4RPFNdKQsFxtNvg=; b=4HadnoLFJojllgtcCeQ23Tv7LVwwB8Fq1iSss53LYFNj9Pp1LicFm87r7hxCn3HwO0zO DP1iuKfiemgi06VTY4ZQhJRuw1ShRnM8iItjkYviD+jdofyXrPbcmKlBNj11++H4FTh9r 69JANmhbB+BflMgU2NQAGkHCiSa/WC79Lt/eQzPi+BgAFSKbEMCswnt2OX1hC4Ze8W/kX OdmvC5zlgSvWVFS4NoHd8pUc5sAey0tXefGzeQTk8ut1L11cbVtMbVb1dtXTLGF29k6Ce pN+oPX6jVrLtTJocwCPRKHJqiPP6nlq+afA+FUFR28jsXIb/hovgItMkegvk1YddkOA== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass header.d=intel.com header.i=@intel.com header.a=rsa-sha256 header.s=Intel header.b=UXQe2gmx; arc=none smtp.remote-ip=192.198.163.19 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.19]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 117DA606A320 for ; Sun, 8 Nov 2026 08:47:27 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org 117DA606A320 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.a=rsa-sha256 header.s=Intel header.b=UXQe2gmx DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1794127648; x=1825663648; h=date:from:to:cc:subject:message-id:mime-version: content-transfer-encoding; bh=q4NOqskWQTyg1tTdO2oBl1EJQ8QeJomuhYXJQeCLeWw=; b=UXQe2gmxq64ZmF9+mWk1iNkWOB00GlpOTRqqC9OlqAUL/qP9n+APdW9P Fue+90ShOux5BixT+NfdTJWhoPlp6f58lwCMkajRrGFtyOsJrthzjXiNI HWHF64zbajmza+GVnlo1KPWhzfO1ja7hRr3LIDsMqEGvUGO+ieGG6bi14 nnjG+RoCHY2bJESDLEidrZzaPm3mIP4jDb6O+3XX/hWMqEudejBHNUS1R G1evZmgoXJNtAq5q8CAYRX9+csvQ4RzyXepGRgJFLNOHLJwAsT2dMYhaQ N00IaZV1V26sdCyF1le3EMPJksYuRf63vugXTtZE01v5YYY89MrAjTiMz Q==; X-CSE-ConnectionGUID: GkPk0OymQCC9LpCEsPTl5A== X-CSE-MsgGUID: W9XV18qhTE6udXlTLoLVZA== X-IronPort-AV: E=McAfee;i="6800,10657,11959"; a="2984603" X-IronPort-AV: E=Sophos;i="6.27,200,1787036400"; d="scan'208";a="2984603" Received: from fmviesa004.fm.intel.com ([10.60.135.144]) by fmvoesa113.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Nov 2026 00:47:27 -0800 X-CSE-ConnectionGUID: eHSn27TXSsecr98OEOTotA== X-CSE-MsgGUID: 1UzSz17jRoSG/0NK7F3F3g== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.27,200,1787036400"; d="scan'208";a="7637015" Received: from ly-workstation.sh.intel.com (HELO ly-workstation) ([10.239.182.64]) by smtpauth.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Nov 2026 00:47:26 -0800 Date: Sun, 8 Nov 2026 16:47:22 +0800 From: kernel test robot To: Linus Torvalds Cc: oe-lkp@lists.linux.dev, lkp@intel.com, linux-kernel@vger.kernel.org, yi1.lai@intel.com Subject: [linus:master] [x86/signal] 9da9f342a8: stress-ng.timer.ops_per_sec 2.8% improvement Message-ID: <202611080951.256d230a-lkp@intel.com> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit Hello, kernel test robot noticed a 2.8% improvement of stress-ng.timer.ops_per_sec on: commit: 9da9f342a897a2d43ad947d4073b1912800ab436 ("x86/signal: Use scoped user access in the sigreturn system calls") https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master testcase: stress-ng config: x86_64-rhel-9.4 compiler: gcc-14 test machine: 192 threads 2 sockets Intel(R) Xeon(R) 6740E CPU @ 2.4GHz (Sierra Forest) with 256G memory parameters: nr_threads: 100% testtime: 60s test: timer cpufreq_governor: performance Details are as below: --------------------------------------------------------------------------------------------------> The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20261108/202611080951.256d230a-lkp@intel.com ========================================================================================= compiler/cpufreq_governor/kconfig/nr_threads/rootfs/tbox_group/test/testcase/testtime: gcc-14/performance/x86_64-rhel-9.4/100%/debian-13-x86_64-20250902.cgz/lkp-srf-2sp3/timer/stress-ng/60s commit: 2806617c9c ("x86/entry: Use get_user() for the fast 32-bit syscall EBP fetch") 9da9f342a8 ("x86/signal: Use scoped user access in the sigreturn system calls") 2806617c9c02fe16 9da9f342a897a2d43ad947d4073 ---------------- --------------------------- %stddev %change %stddev \ | \ 9031 +1.9% 9207 stress-ng.time.system_time 1344 -11.8% 1184 ± 2% stress-ng.time.user_time 5.442e+09 +2.8% 5.593e+09 stress-ng.timer.ops 90751049 +2.8% 93261655 stress-ng.timer.ops_per_sec Disclaimer: Results have been estimated based on internal Intel analysis and are provided for informational purposes only. Any difference in system hardware or software design or configuration may affect actual performance. -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki