From patchwork Thu Jan 18 00:28:06 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alison Schofield X-Patchwork-Id: 13522278 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.9]) (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 2781E81A for ; Thu, 18 Jan 2024 00:28:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.9 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705537703; cv=none; b=eSYWeOZIxEr9lPuSAcQ64rCKmSZbOMqIev10M8hq5ox8lfaHIRmnxKVz0nmpVl6FF9lJi3t3kfZ/P9UIIbrP/A31iC/TeeP8u1MVGyd7+mBlQzWnk17T5wRNPAbOUO4jTFF17MZC12ydzziEMS+V9OYJdS7wpq4jaI9YGgaV3kU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705537703; c=relaxed/simple; bh=zMYBSPVOSUpv6oOK/BknFI1D0COrJaTJ0DmAHe/5ezY=; h=DKIM-Signature:X-IronPort-AV:X-IronPort-AV:Received:X-ExtLoop1: X-IronPort-AV:X-IronPort-AV:Received:From:To:Cc:Subject:Date: Message-Id:X-Mailer:In-Reply-To:References:MIME-Version: Content-Transfer-Encoding; b=qKGE3zs9ucFyU1tbjGFS3Dii4mAAn0pYiaMmTQYn4mR5piKzRn9nw/UrppiIUqfIh0QPp6PMli+z+/Eugog/a0xdyPtr4pKERw8E6MRYIs5Csi7PxiY14MZJlCIcorDguZUImjXDwgxBj7eq9s2rBI6J5z9e/QyrKFa670VUrMA= 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=em5fS6AP; arc=none smtp.client-ip=198.175.65.9 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="em5fS6AP" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1705537702; x=1737073702; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=zMYBSPVOSUpv6oOK/BknFI1D0COrJaTJ0DmAHe/5ezY=; b=em5fS6API0oWzfLmcflqY4p2HwnIUUPca2yJtfhy8Nv63DxCRM2/PnjU KMxgHQJZKZUOOG+U1oHpiYEooHZkqzBGdaNTwpGWx276Aoz4ZZcYWIA1n vbT/W7CY9/wVai2p3BDy/pi7fAFIaUN07puMEcENysIJvRmtmbu1wSNvA bVmGfwonUofc9POnLkCjd/isv8BM3I+HT00HLveUU1ldRJgu9HZg7UpkY LkVRWsZYwCnPIMFCFKNpzZwR1U4QK3tKuqBgoUGRXtM6OsUOeyQ9wYFju 2loAN7bidwy7qvxKErRfKt9mvt+9P/s+COmpoIXQqVTcrNfRWYKn+7TJb A==; X-IronPort-AV: E=McAfee;i="6600,9927,10956"; a="18904581" X-IronPort-AV: E=Sophos;i="6.05,201,1701158400"; d="scan'208";a="18904581" Received: from orsmga007.jf.intel.com ([10.7.209.58]) by orvoesa101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Jan 2024 16:28:22 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10956"; a="777577266" X-IronPort-AV: E=Sophos;i="6.05,201,1701158400"; d="scan'208";a="777577266" Received: from aschofie-mobl2.amr.corp.intel.com (HELO localhost) ([10.209.110.93]) by orsmga007-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Jan 2024 16:28:21 -0800 From: alison.schofield@intel.com To: Vishal Verma Cc: Alison Schofield , nvdimm@lists.linux.dev, linux-cxl@vger.kernel.org Subject: [PATCH v6 7/7] cxl/test: add cxl-poison.sh unit test Date: Wed, 17 Jan 2024 16:28:06 -0800 Message-Id: <2bfc65ec1bbe0168928f08541ec26d6d5dded345.1705534719.git.alison.schofield@intel.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-cxl@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Alison Schofield Exercise cxl list, libcxl, and driver pieces of the get poison list pathway. Inject and clear poison using debugfs and use cxl-cli to read the poison list by memdev and by region. Signed-off-by: Alison Schofield --- test/cxl-poison.sh | 133 +++++++++++++++++++++++++++++++++++++++++++++ test/meson.build | 2 + 2 files changed, 135 insertions(+) create mode 100644 test/cxl-poison.sh diff --git a/test/cxl-poison.sh b/test/cxl-poison.sh new file mode 100644 index 000000000000..91c5c0bed1c2 --- /dev/null +++ b/test/cxl-poison.sh @@ -0,0 +1,133 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 +# Copyright (C) 2023 Intel Corporation. All rights reserved. + +. "$(dirname "$0")"/common + +rc=77 + +set -ex + +trap 'err $LINENO' ERR + +check_prereq "jq" + +modprobe -r cxl_test +modprobe cxl_test + +rc=1 + +# THEORY OF OPERATION: Exercise cxl-cli and cxl driver ability to +# inject, clear, and get the poison list. Do it by memdev and by region. + +find_memdev() +{ + readarray -t capable_mems < <("$CXL" list -b "$CXL_TEST_BUS" -M | + jq -r ".[] | select(.pmem_size != null) | + select(.ram_size != null) | .memdev") + + if [ ${#capable_mems[@]} == 0 ]; then + echo "no memdevs found for test" + err "$LINENO" + fi + + memdev=${capable_mems[0]} +} + +create_x2_region() +{ + # Find an x2 decoder + decoder="$($CXL list -b "$CXL_TEST_BUS" -D -d root | jq -r ".[] | + select(.pmem_capable == true) | + select(.nr_targets == 2) | + .decoder")" + + # Find a memdev for each host-bridge interleave position + port_dev0="$($CXL list -T -d "$decoder" | jq -r ".[] | + .targets | .[] | select(.position == 0) | .target")" + port_dev1="$($CXL list -T -d "$decoder" | jq -r ".[] | + .targets | .[] | select(.position == 1) | .target")" + mem0="$($CXL list -M -p "$port_dev0" | jq -r ".[0].memdev")" + mem1="$($CXL list -M -p "$port_dev1" | jq -r ".[0].memdev")" + + region="$($CXL create-region -d "$decoder" -m "$mem0" "$mem1" | + jq -r ".region")" + if [[ ! $region ]]; then + echo "create-region failed for $decoder" + err "$LINENO" + fi + echo "$region" +} + +# When cxl-cli support for inject and clear arrives, replace +# the writes to /sys/kernel/debug with the new cxl commands. + +inject_poison_sysfs() +{ + memdev="$1" + addr="$2" + + echo "$addr" > /sys/kernel/debug/cxl/"$memdev"/inject_poison +} + +clear_poison_sysfs() +{ + memdev="$1" + addr="$2" + + echo "$addr" > /sys/kernel/debug/cxl/"$memdev"/clear_poison +} + +validate_poison_found() +{ + list_by="$1" + nr_expect="$2" + + poison_list="$($CXL list -r "$list_by" --media-errors | + jq -r '.[].media_errors')" + nr_found=$(jq "length" <<< "$poison_list") + if [ "$nr_found" -ne "$nr_expect" ]; then + echo "$nr_expect poison records expected, $nr_found found" + err "$LINENO" + fi +} + +test_poison_by_memdev() +{ + find_memdev + inject_poison_sysfs "$memdev" "0x40000000" + inject_poison_sysfs "$memdev" "0x40001000" + inject_poison_sysfs "$memdev" "0x600" + inject_poison_sysfs "$memdev" "0x0" + validate_poison_found "-m $memdev" 4 + + clear_poison_sysfs "$memdev" "0x40000000" + clear_poison_sysfs "$memdev" "0x40001000" + clear_poison_sysfs "$memdev" "0x600" + clear_poison_sysfs "$memdev" "0x0" + validate_poison_found "-m $memdev" 0 +} + +test_poison_by_region() +{ + create_x2_region + inject_poison_sysfs "$mem0" "0x40000000" + inject_poison_sysfs "$mem1" "0x40000000" + validate_poison_found "-r $region" 2 + + clear_poison_sysfs "$mem0" "0x40000000" + clear_poison_sysfs "$mem1" "0x40000000" + validate_poison_found "-r $region" 0 +} + +# Turn tracing on. Note that 'cxl list --poison' does toggle the tracing. +# Turning it on here allows the test user to also view inject and clear +# trace events. +echo 1 > /sys/kernel/tracing/events/cxl/cxl_poison/enable + +test_poison_by_memdev +test_poison_by_region + +check_dmesg "$LINENO" + +modprobe -r cxl-test diff --git a/test/meson.build b/test/meson.build index 224adaf41fcc..2706fa5d633c 100644 --- a/test/meson.build +++ b/test/meson.build @@ -157,6 +157,7 @@ cxl_create_region = find_program('cxl-create-region.sh') cxl_xor_region = find_program('cxl-xor-region.sh') cxl_update_firmware = find_program('cxl-update-firmware.sh') cxl_events = find_program('cxl-events.sh') +cxl_poison = find_program('cxl-poison.sh') tests = [ [ 'libndctl', libndctl, 'ndctl' ], @@ -186,6 +187,7 @@ tests = [ [ 'cxl-create-region.sh', cxl_create_region, 'cxl' ], [ 'cxl-xor-region.sh', cxl_xor_region, 'cxl' ], [ 'cxl-events.sh', cxl_events, 'cxl' ], + [ 'cxl-poison.sh', cxl_poison, 'cxl' ], ] if get_option('destructive').enabled()