From: Alison Schofield <[email protected]> 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 <[email protected]> --- test/cxl-poison.sh | 103 +++++++++++++++++++++++++++++++++++++++++++++ test/meson.build | 2 + 2 files changed, 105 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..3c424532da7b --- /dev/null +++ b/test/cxl-poison.sh @@ -0,0 +1,103 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 +# Copyright (C) 2022 Intel Corporation. All rights reserved. + +. $(dirname $0)/common + +rc=77 + +set -ex + +trap 'err $LINENO' ERR + +check_prereq "jq" + +modprobe -r cxl_test +modprobe cxl_test +cxl list + +# THEORY OF OPERATION: Exercise cxl-cli and cxl driver ability to +# inject, clear, and get the poison list. Do it by memdev and by region. +# Based on current cxl-test topology. + +create_region() +{ + region=$($CXL create-region -d $decoder -m $memdevs | jq -r ".region") + + if [[ ! $region ]]; then + echo "create-region failed for $decoder" + err "$LINENO" + fi +} + +setup_x2_region() +{ + # 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 $mem1" +} + +find_media_errors() +{ + nr=$(echo $json | jq -r ".nr_poison_records") + if [[ $nr -ne $NR_ERRS ]]; then + echo "$mem: $NR_ERRS poison records expected, $nr found" + err "$LINENO" + fi +} + +# Turn Tracing ON +# Note that 'cxl list --poison' does toggle the tracing, so +# turning it on here is to enable the test user to view inject +# and clear trace events, if they wish. +echo 1 > /sys/kernel/tracing/events/cxl/cxl_poison/enable + +# Using DEBUGFS: +# When cxl-cli support for inject and clear arrives, replace +# the writes to /sys/kernel/debug with the new cxl commands +# that wrap them. + +# Poison by memdev: inject, list, clear, list. +# Inject 2 into pmem and 2 into ram partition. +echo 0x40000000 > /sys/kernel/debug/cxl/mem1/inject_poison +echo 0x40001000 > /sys/kernel/debug/cxl/mem1/inject_poison +echo 0x0 > /sys/kernel/debug/cxl/mem1/inject_poison +echo 0x600 > /sys/kernel/debug/cxl/mem1/inject_poison +NR_ERRS=4 +json=$("$CXL" list -m mem1 --poison | jq -r '.[].poison') +find_media_errors +echo 0x40000000 > /sys/kernel/debug/cxl/mem1/clear_poison +echo 0x40001000 > /sys/kernel/debug/cxl/mem1/clear_poison +echo 0x0 > /sys/kernel/debug/cxl/mem1/clear_poison +echo 0x600 > /sys/kernel/debug/cxl/mem1/clear_poison +NR_ERRS=0 +json=$("$CXL" list -m mem1 --poison | jq -r '.[].poison') +find_media_errors + +# Poison by region: inject, list, clear, list. +setup_x2_region +create_region +echo 0x40000000 > /sys/kernel/debug/cxl/"$mem0"/inject_poison +echo 0x40000000 > /sys/kernel/debug/cxl/"$mem1"/inject_poison +NR_ERRS=2 +json=$("$CXL" list -r "$region" --poison | jq -r '.[].poison') +find_media_errors +echo 0x40000000 > /sys/kernel/debug/cxl/"$mem0"/clear_poison +echo 0x40000000 > /sys/kernel/debug/cxl/"$mem1"/clear_poison +NR_ERRS=0 +json=$("$CXL" list -r "$region" --poison | jq -r '.[].poison') +find_media_errors + +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() -- 2.37.3
