From patchwork Fri Nov 18 04:53:32 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alison Schofield X-Patchwork-Id: 13047720 Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) (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 8A68FEB29 for ; Fri, 18 Nov 2022 04:53:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1668747225; x=1700283225; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=TTq049knGqsgKEZMsehbGAZj3jxH2M7B/X4fPk5L/Oo=; b=lpjZ8PwCwsY377D+opUVUGq37Bg7HkqfpESTeg7RNqpWpGrfWrZvsGBU /k7AQBv3655Pnjsk5y8gE9tAIlshlohFG1R7Q85NwajY6mVP58QSLZulR hdvvfyGTiv7Ugy6hB5BB//RmvFqJFx8h+dBPsC6SXNv1LIGEXwHDKcaha YlYZof2ZOdTY1YSTsHGQd3VZ4TcNI8Tr5oyXXO8s20F5xoz9ayS0yxRha tvzul3WiEIwAnC9x6C7hSo9ZIfxMbUMhp+4tAXFS6EgXHVn1wEqLY5xbT yL9GwHlacQzFrpAyDH1xN4LGp4bPq1fkcBzfIgrBpFyqBc7AtE0OXIRTy w==; X-IronPort-AV: E=McAfee;i="6500,9779,10534"; a="399341617" X-IronPort-AV: E=Sophos;i="5.96,173,1665471600"; d="scan'208";a="399341617" Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Nov 2022 20:53:35 -0800 X-IronPort-AV: E=McAfee;i="6500,9779,10534"; a="969148088" X-IronPort-AV: E=Sophos;i="5.96,173,1665471600"; d="scan'208";a="969148088" Received: from aschofie-mobl2.amr.corp.intel.com (HELO localhost) ([10.209.84.12]) by fmsmga005-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Nov 2022 20:53:34 -0800 From: alison.schofield@intel.com To: Vishal Verma , Dan Williams Cc: Alison Schofield , nvdimm@lists.linux.dev, linux-cxl@vger.kernel.org Subject: [ndctl PATCH v3] cxl/test: add cxl_xor_region test Date: Thu, 17 Nov 2022 20:53:32 -0800 Message-Id: <20221118045332.1330804-1-alison.schofield@intel.com> X-Mailer: git-send-email 2.37.3 Precedence: bulk X-Mailing-List: nvdimm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Alison Schofield Exercise the kernel driver support of XOR math by creating regions with 1,2, and 4-way interleaves using XOR interleave arithmetic. Use module parameter "interleave_arithmetic=1" to select the cxl_test topology that supports XOR math. XOR math is not used in the default cxl_test module. Add this test to the 'cxl' suite so that it gets exercised routinely. If the topology defined in cxl_test changes, this test may require an update. Signed-off-by: Alison Schofield --- Depends on kernel patches here [1] Changes in v3 - s/create_region/create_and_destroy_region (DaveJ) - Built on ndctl: release v74 plus Dan's cxl-cli test and usability updates [2] Changes in v2 - Update to match cxl_test topology changes - Remove 3-way interleave - Small naming updates [1] https://lore.kernel.org/linux-cxl/cover.1668745515.git.alison.schofield@intel.com/ [2] https://lore.kernel.org/nvdimm/166777840496.1238089.5601286140872803173.stgit@dwillia2-xfh.jf.intel.com/ test/cxl-xor-region.sh | 99 ++++++++++++++++++++++++++++++++++++++++++ test/meson.build | 2 + 2 files changed, 101 insertions(+) create mode 100644 test/cxl-xor-region.sh diff --git a/test/cxl-xor-region.sh b/test/cxl-xor-region.sh new file mode 100644 index 000000000000..5c2108c821e2 --- /dev/null +++ b/test/cxl-xor-region.sh @@ -0,0 +1,99 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 +# Copyright (C) 2022 Intel Corporation. All rights reserved. + +. $(dirname $0)/common + +rc=1 + +set -ex + +trap 'err $LINENO' ERR + +check_prereq "jq" + +modprobe -r cxl_test +modprobe cxl_test interleave_arithmetic=1 +udevadm settle + +# THEORY OF OPERATION: Create x1,2,3,4 regions to exercise the XOR math +# option of the CXL driver. As with other cxl_test tests, changes to the +# CXL topology in tools/testing/cxl/test/cxl.c may require an update here. + +create_and_destroy_region() +{ + region=$($CXL create-region -d $decoder -m $memdevs | jq -r ".region") + + if [[ ! $region ]]; then + echo "create-region failed for $decoder" + err "$LINENO" + fi + + $CXL destroy-region -f -b cxl_test "$region" +} + +setup_x1() +{ + # Find an x1 decoder + decoder=$($CXL list -b cxl_test -D -d root | jq -r ".[] | + select(.pmem_capable == true) | + select(.nr_targets == 1) | + .decoder") + + # Find a memdev for this host-bridge + port_dev0=$($CXL list -T -d $decoder | jq -r ".[] | + .targets | .[] | select(.position == 0) | .target") + mem0=$($CXL list -M -p $port_dev0 | jq -r ".[0].memdev") + memdevs="$mem0" +} + +setup_x2() +{ + # Find an x2 decoder + decoder=$($CXL list -b cxl_test -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 $port_dev1 | jq -r ".[0].memdev") + memdevs="$mem0 $mem1" +} + +setup_x4() +{ + # find x4 decoder + decoder=$($CXL list -b cxl_test -D -d root | jq -r ".[] | + select(.pmem_capable == true) | + select(.nr_targets == 4) | + .decoder") + + # Find a memdev for each host-bridge interleave position + port_dev0=$($CXL list -T -d $decoder | jq -r ".[] | + .targets | .[] | select(.position == 0) | .target") + port_dev1=$($CXL list -T -d $decoder | jq -r ".[] | + .targets | .[] | select(.position == 1) | .target") + port_dev2=$($CXL list -T -d $decoder | jq -r ".[] | + .targets | .[] | select(.position == 2) | .target") + port_dev3=$($CXL list -T -d $decoder | jq -r ".[] | + .targets | .[] | select(.position == 3) | .target") + mem0=$($CXL list -M -p $port_dev0 | jq -r ".[0].memdev") + mem1=$($CXL list -M -p $port_dev1 | jq -r ".[1].memdev") + mem2=$($CXL list -M -p $port_dev2 | jq -r ".[2].memdev") + mem3=$($CXL list -M -p $port_dev3 | jq -r ".[3].memdev") + memdevs="$mem0 $mem1 $mem2 $mem3" +} + +setup_x1 +create_and_destroy_region +setup_x2 +create_and_destroy_region +setup_x4 +create_and_destroy_region + +modprobe -r cxl_test diff --git a/test/meson.build b/test/meson.build index c31d8eac66c5..e0aaf5c6eaa9 100644 --- a/test/meson.build +++ b/test/meson.build @@ -154,6 +154,7 @@ cxl_topo = find_program('cxl-topology.sh') cxl_sysfs = find_program('cxl-region-sysfs.sh') cxl_labels = find_program('cxl-labels.sh') cxl_create_region = find_program('cxl-create-region.sh') +cxl_xor_region = find_program('cxl-xor-region.sh') tests = [ [ 'libndctl', libndctl, 'ndctl' ], @@ -181,6 +182,7 @@ tests = [ [ 'cxl-region-sysfs.sh', cxl_sysfs, 'cxl' ], [ 'cxl-labels.sh', cxl_labels, 'cxl' ], [ 'cxl-create-region.sh', cxl_create_region, 'cxl' ], + [ 'cxl-xor-region.sh', cxl_xor_region, 'cxl' ], ] if get_option('destructive').enabled()