From patchwork Wed Oct 10 19:19:22 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mathieu Desnoyers X-Patchwork-Id: 10635135 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 27EDD14DB for ; Wed, 10 Oct 2018 19:21:38 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4A3CF2AA6B for ; Wed, 10 Oct 2018 19:21:38 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 3D9EF2AA77; Wed, 10 Oct 2018 19:21:38 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B4AA32AA4B for ; Wed, 10 Oct 2018 19:21:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727587AbeJKCnk (ORCPT ); Wed, 10 Oct 2018 22:43:40 -0400 Received: from mail.efficios.com ([167.114.142.138]:32792 "EHLO mail.efficios.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727579AbeJKCnj (ORCPT ); Wed, 10 Oct 2018 22:43:39 -0400 Received: from localhost (ip6-localhost [IPv6:::1]) by mail.efficios.com (Postfix) with ESMTP id F06FA183B56; Wed, 10 Oct 2018 15:20:05 -0400 (EDT) Received: from mail.efficios.com ([IPv6:::1]) by localhost (mail02.efficios.com [IPv6:::1]) (amavisd-new, port 10032) with ESMTP id q4DZqpoIpu0W; Wed, 10 Oct 2018 15:20:05 -0400 (EDT) Received: from localhost (ip6-localhost [IPv6:::1]) by mail.efficios.com (Postfix) with ESMTP id 2AC14183B53; Wed, 10 Oct 2018 15:20:05 -0400 (EDT) DKIM-Filter: OpenDKIM Filter v2.10.3 mail.efficios.com 2AC14183B53 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=efficios.com; s=default; t=1539199205; bh=Cfb0if2j7qr27a8wQq79l8o8zLis2u6tHcSE1XnbL0Q=; h=From:To:Date:Message-Id; b=gpjC108iIxTzdhVPF8J7G3bZ7LzBW9DRo6tk6ZTsopfcnZXrsZS2US9xtKLo8ZgJJ Rgb6twi9zHkLtfUk5U6+bNXJykO2o+kPkqZfjbMELhp6awgQc8qkZx8/nvjTv9WrKM EL2/N+i1ylQKroNtgq3A8grSNXu7XC1oZBw1COaq6NO/X3Twhaty7mlUKPmNjS5zMP lLLSrVKwdyg/Ql8IU9+KE7IVFdOsubKdyOf3ix4+MU0ekVi5pHCufe9mKbbr8bjTWD Zc+UWDWuH+RE9h6G7zVjOtowkFl4p82IV+LO6VbiL0FV7RAYZPxslLz1t+E7KkWUfV DOAtCVb7wk2bA== X-Virus-Scanned: amavisd-new at efficios.com Received: from mail.efficios.com ([IPv6:::1]) by localhost (mail02.efficios.com [IPv6:::1]) (amavisd-new, port 10026) with ESMTP id tGcDv-7_nAH2; Wed, 10 Oct 2018 15:20:05 -0400 (EDT) Received: from thinkos.internal.efficios.com (192-222-157-41.qc.cable.ebox.net [192.222.157.41]) by mail.efficios.com (Postfix) with ESMTPSA id 006BE183B32; Wed, 10 Oct 2018 15:20:01 -0400 (EDT) From: Mathieu Desnoyers To: Peter Zijlstra , "Paul E . McKenney" , Boqun Feng Cc: linux-kernel@vger.kernel.org, linux-api@vger.kernel.org, Thomas Gleixner , Andy Lutomirski , Dave Watson , Paul Turner , Andrew Morton , Russell King , Ingo Molnar , "H . Peter Anvin" , Andi Kleen , Chris Lameter , Ben Maurer , Steven Rostedt , Josh Triplett , Linus Torvalds , Catalin Marinas , Will Deacon , Michael Kerrisk , Joel Fernandes , Mathieu Desnoyers , Shuah Khan , linux-kselftest@vger.kernel.org Subject: [RFC PATCH for 4.21 02/16] rseq/selftests: Adapt number of threads to the number of detected cpus Date: Wed, 10 Oct 2018 15:19:22 -0400 Message-Id: <20181010191936.7495-3-mathieu.desnoyers@efficios.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20181010191936.7495-1-mathieu.desnoyers@efficios.com> References: <20181010191936.7495-1-mathieu.desnoyers@efficios.com> Sender: linux-kselftest-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP On smaller systems, running a test with 200 threads can take a long time on machines with smaller number of CPUs. Detect the number of online cpus at test runtime, and multiply that by 6 to have 6 rseq threads per cpu preempting each other. Signed-off-by: Mathieu Desnoyers Cc: Shuah Khan Cc: Thomas Gleixner Cc: Joel Fernandes Cc: Peter Zijlstra Cc: Catalin Marinas Cc: Dave Watson Cc: Will Deacon Cc: Andi Kleen Cc: linux-kselftest@vger.kernel.org Cc: "H . Peter Anvin" Cc: Chris Lameter Cc: Russell King Cc: Michael Kerrisk Cc: "Paul E . McKenney" Cc: Paul Turner Cc: Boqun Feng Cc: Josh Triplett Cc: Steven Rostedt Cc: Ben Maurer Cc: Andy Lutomirski Cc: Andrew Morton Cc: Linus Torvalds --- tools/testing/selftests/rseq/run_param_test.sh | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/rseq/run_param_test.sh b/tools/testing/selftests/rseq/run_param_test.sh index 3acd6d75ff9f..e426304fd4a0 100755 --- a/tools/testing/selftests/rseq/run_param_test.sh +++ b/tools/testing/selftests/rseq/run_param_test.sh @@ -1,6 +1,8 @@ #!/bin/bash # SPDX-License-Identifier: GPL-2.0+ or MIT +NR_CPUS=`grep '^processor' /proc/cpuinfo | wc -l` + EXTRA_ARGS=${@} OLDIFS="$IFS" @@ -28,15 +30,16 @@ IFS="$OLDIFS" REPS=1000 SLOW_REPS=100 +NR_THREADS=$((6*${NR_CPUS})) function do_tests() { local i=0 while [ "$i" -lt "${#TEST_LIST[@]}" ]; do echo "Running test ${TEST_NAME[$i]}" - ./param_test ${TEST_LIST[$i]} -r ${REPS} ${@} ${EXTRA_ARGS} || exit 1 + ./param_test ${TEST_LIST[$i]} -r ${REPS} -t ${NR_THREADS} ${@} ${EXTRA_ARGS} || exit 1 echo "Running compare-twice test ${TEST_NAME[$i]}" - ./param_test_compare_twice ${TEST_LIST[$i]} -r ${REPS} ${@} ${EXTRA_ARGS} || exit 1 + ./param_test_compare_twice ${TEST_LIST[$i]} -r ${REPS} -t ${NR_THREADS} ${@} ${EXTRA_ARGS} || exit 1 let "i++" done }