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 X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2BB71C4320A for ; Tue, 17 Aug 2021 23:53:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 15B8761051 for ; Tue, 17 Aug 2021 23:53:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236690AbhHQXxy (ORCPT ); Tue, 17 Aug 2021 19:53:54 -0400 Received: from mail.kernel.org ([198.145.29.99]:46560 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235369AbhHQXxx (ORCPT ); Tue, 17 Aug 2021 19:53:53 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id F05EA61008; Tue, 17 Aug 2021 23:53:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1629244400; bh=Hyylsb12bCc9mWlZA1bOLlVBoys21asDFGRkkUM1Oyo=; h=Subject:From:To:Cc:Date:In-Reply-To:References:From; b=vNVy3WS+TMLSExy0x1evTcLh7aMNW44efwpHKNykC+ldNRrKcOdnZs+CxPupL05FK 4wnABHrxX7umoEXhKt05RX3dYWuJ9QOYmmXFC6RlCys2+fZX9UCWLxht3nJCqutrS5 KLF1f6s6FdNeiQjircydnLnmC2L2tKfbvgAatJUgFBQu1hIrTQ2SzDCe8DTg+dTGA9 nGHjgM9dcwd9k95pSnzJcyLCaZ77Oq/DLX4igly8G9R0Su/G2mwQ7CsWRZfqvDVIsc JXTR5a197cp+e48Ht6CXNYtRNICVIiVbJTfXvLWy0FdaZGv6/xNbYkOsw4fY6hYLpl KfiLEfgVZBINA== Subject: [PATCH 1/2] generic: fsstress with cpu offlining From: "Darrick J. Wong" To: djwong@kernel.org, guaneryu@gmail.com Cc: linux-xfs@vger.kernel.org, fstests@vger.kernel.org, guan@eryu.me Date: Tue, 17 Aug 2021 16:53:19 -0700 Message-ID: <162924439973.779465.13771500926240153773.stgit@magnolia> In-Reply-To: <162924439425.779465.16029390956507261795.stgit@magnolia> References: <162924439425.779465.16029390956507261795.stgit@magnolia> User-Agent: StGit/0.19 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-xfs@vger.kernel.org From: Darrick J. Wong Exercise filesystem operations when we're taking CPUs online and offline throughout the test. Signed-off-by: Darrick J. Wong --- tests/generic/726 | 71 +++++++++++++++++++++++++++++++++++++++++++++++++ tests/generic/726.out | 2 + 2 files changed, 73 insertions(+) create mode 100755 tests/generic/726 create mode 100644 tests/generic/726.out diff --git a/tests/generic/726 b/tests/generic/726 new file mode 100755 index 00000000..4b072b7f --- /dev/null +++ b/tests/generic/726 @@ -0,0 +1,71 @@ +#! /bin/bash +# SPDX-License-Identifier: GPL-2.0 +# Copyright (c) 2021 Oracle, Inc. All Rights Reserved. +# +# FS QA Test No. 726 +# +# Run an all-writes fsstress run with multiple threads while exercising CPU +# hotplugging to shake out bugs in the write path. +# +. ./common/preamble +_begin_fstest auto rw + +# Override the default cleanup function. +_cleanup() +{ + cd / + rm -f $tmp.* + $KILLALL_PROG -9 fsstress > /dev/null 2>&1 + for i in "$sysfs_cpu_dir/"cpu*/online; do + echo 1 > "$i" 2>/dev/null + done +} + +exercise_cpu_hotplug() +{ + while [ -e $sentinel_file ]; do + local idx=$(( RANDOM % nr_hotplug_cpus )) + local cpu="${hotplug_cpus[idx]}" + local action=$(( RANDOM % 2 )) + + echo "$action" > "$sysfs_cpu_dir/cpu$cpu/online" 2>/dev/null + sleep 0.5 + done +} + +# Import common functions. + +# Modify as appropriate. +_supported_fs generic + +sysfs_cpu_dir="/sys/devices/system/cpu" + +# Figure out which CPU(s) support hotplug. +nrcpus=$(getconf _NPROCESSORS_CONF) +hotplug_cpus=() +for ((i = 0; i < nrcpus; i++ )); do + test -e "$sysfs_cpu_dir/cpu$i/online" && hotplug_cpus+=("$i") +done +nr_hotplug_cpus="${#hotplug_cpus[@]}" +test "$nr_hotplug_cpus" -gt 0 || _notrun "CPU hotplugging not supported" + +_require_scratch +_require_command "$KILLALL_PROG" "killall" + +echo "Silence is golden." + +_scratch_mkfs > $seqres.full 2>&1 +_scratch_mount >> $seqres.full 2>&1 + +sentinel_file=$tmp.hotplug +touch $sentinel_file +exercise_cpu_hotplug & + +nr_cpus=$((LOAD_FACTOR * 4)) +nr_ops=$((10000 * nr_cpus * TIME_FACTOR)) +$FSSTRESS_PROG $FSSTRESS_AVOID -w -d $SCRATCH_MNT -n $nr_ops -p $nr_cpus >> $seqres.full +rm -f $sentinel_file + +# success, all done +status=0 +exit diff --git a/tests/generic/726.out b/tests/generic/726.out new file mode 100644 index 00000000..6839f8ce --- /dev/null +++ b/tests/generic/726.out @@ -0,0 +1,2 @@ +QA output created by 726 +Silence is golden.