From patchwork Sat Jul 6 06:24:54 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alison Schofield X-Patchwork-Id: 13725683 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.18]) (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 3C67E1CA96 for ; Sat, 6 Jul 2024 06:25:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.18 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720247110; cv=none; b=AqzwiARNIu99lQRDx4STGw/5lzonAl4VhzKeSas77BIhSZ1Bszfx5PsSrQhlJb+emJgvwxL8nOXgisL0LCGPohUAGJdNrZCQKYU3p+RvcLePDOYDB2+HllSMo796YxaOkGydSkzTgP0Bz2ZWFyiNH58ug5Gv6VdT93kvIsmCJI4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720247110; c=relaxed/simple; bh=RkvUXVi/Dt6O4GzRluGcJSTqPWOyEmy7NvPT0BP6324=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=KYWQNF+buYtTQFVFnOgtwatE259IPqZxXXJKVxntncIvzTt7CC6KLKk4Z1FxgDOnMphK9sVpl3/uEVJc8ToazZLQj20LgU1nKSSfYMOMZdCSaOjFEwb/K2YTAGAwg8/FYYMzdUIT/Mrb3EHJGfBRQZzoIPgqA24b3kF3D2HWow8= 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=TwGKTQC0; arc=none smtp.client-ip=192.198.163.18 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="TwGKTQC0" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1720247106; x=1751783106; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=RkvUXVi/Dt6O4GzRluGcJSTqPWOyEmy7NvPT0BP6324=; b=TwGKTQC0iuk6xPqsYLHp883zUwyCq/jn29yjU8oEqbASzrMSp0L1SHBE YAgC+zLgdIUUINfW9C+tS9ErjkY+DSbh0MOw4FBZ9OX31fEYuYmPEu+5X RkZxsxp7Ib0CMwauQsIegQLID8SWqtaTxNwQtPvFpo9z8WTysm1IsuyOY d3c9n5MOOL4+5J+fV0oq6tLwXWNRGQ63geQxUhdYs4z2I5n/HrkGzDL3J Szd3HnB0LQE3dZzuStOOBujDorbqfktdtD7pVlZZA8Qgb33R79AGTSaqQ fu0sHou4XAPyYU97JdXU0Z2OQD4jTisfreAXJFnckAU8+fk305mMvltoh A==; X-CSE-ConnectionGUID: LipIqNl6TACpygJ/HOGkbw== X-CSE-MsgGUID: gkPXMGJ+QPeVfuKHE9v1CQ== X-IronPort-AV: E=McAfee;i="6700,10204,11123"; a="17166949" X-IronPort-AV: E=Sophos;i="6.09,187,1716274800"; d="scan'208";a="17166949" Received: from fmviesa001.fm.intel.com ([10.60.135.141]) by fmvoesa112.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Jul 2024 23:25:06 -0700 X-CSE-ConnectionGUID: ksjkjPKdQsOvLn+RVuv2wg== X-CSE-MsgGUID: bv4BEl1vTXCxuzgG3wAyIg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.09,187,1716274800"; d="scan'208";a="78172561" Received: from aschofie-mobl2.amr.corp.intel.com (HELO localhost) ([10.209.72.84]) by smtpauth.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Jul 2024 23:25:05 -0700 From: alison.schofield@intel.com To: nvdimm@lists.linux.dev, linux-cxl@vger.kernel.org Cc: Alison Schofield , Dave Jiang Subject: [ndctl PATCH v13 8/8] cxl/test: add cxl-poison.sh unit test Date: Fri, 5 Jul 2024 23:24:54 -0700 Message-Id: <4212bf9d89e31a17f0092b84da473de2abf554a2.1720241079.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 Reviewed-by: Dave Jiang Tested-by: Xingtao Yao --- test/cxl-poison.sh | 137 +++++++++++++++++++++++++++++++++++++++++++++ test/meson.build | 2 + 2 files changed, 139 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..2caf092db460 --- /dev/null +++ b/test/cxl-poison.sh @@ -0,0 +1,137 @@ +#!/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="$2" + + poison_list="$($CXL list "$list_by" --media-errors | + jq -r '.[].media_errors')" + if [[ ! $poison_list ]]; then + nr_found=0 + else + nr_found=$(jq "length" <<< "$poison_list") + fi + if [ "$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 $region" 0 +} + +# Turn tracing on. Note that 'cxl list --media-errors' toggles the tracing. +# Turning it on here allows the test user to also view inject and clear +# trace events. +echo 1 > /sys/kernel/tracing/events/cxl/cxl_poison/enable + +test_poison_by_memdev +test_poison_by_region + +check_dmesg "$LINENO" + +modprobe -r cxl-test diff --git a/test/meson.build b/test/meson.build index a965a79fd6cb..d871e28e17ce 100644 --- a/test/meson.build +++ b/test/meson.build @@ -160,6 +160,7 @@ cxl_events = find_program('cxl-events.sh') cxl_sanitize = find_program('cxl-sanitize.sh') cxl_destroy_region = find_program('cxl-destroy-region.sh') cxl_qos_class = find_program('cxl-qos-class.sh') +cxl_poison = find_program('cxl-poison.sh') tests = [ [ 'libndctl', libndctl, 'ndctl' ], @@ -192,6 +193,7 @@ tests = [ [ 'cxl-sanitize.sh', cxl_sanitize, 'cxl' ], [ 'cxl-destroy-region.sh', cxl_destroy_region, 'cxl' ], [ 'cxl-qos-class.sh', cxl_qos_class, 'cxl' ], + [ 'cxl-poison.sh', cxl_poison, 'cxl' ], ] if get_option('destructive').enabled()