Add tests in cxl-qos-class.sh to verify qos_class are set with the fake
qos_class create by the kernel. Root decoders should have qos_class
attribute set. Memory devices should have ram_qos_class or pmem_qos_class
set depending on which partitions are valid.
Signed-off-by: Dave Jiang <dave.ji...@intel.com>
---
v7:
- Add create_region -Q testing (Vishal)
---
test/common | 4 ++
test/cxl-qos-class.sh | 102 ++++++++++++++++++++++++++++++++++++++++++
test/meson.build | 2 +
3 files changed, 108 insertions(+)
create mode 100755 test/cxl-qos-class.sh
diff --git a/test/common b/test/common
index f1023ef20f7e..5694820c7adc 100644
--- a/test/common
+++ b/test/common
@@ -150,3 +150,7 @@ check_dmesg()
grep -q "Call Trace" <<< $log && err $1
true
}
+
+
+# CXL COMMON
+TEST_QOS_CLASS=42
diff --git a/test/cxl-qos-class.sh b/test/cxl-qos-class.sh
new file mode 100755
index 000000000000..145df6134685
--- /dev/null
+++ b/test/cxl-qos-class.sh
@@ -0,0 +1,102 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (C) 2024 Intel Corporation. All rights reserved.
+
+. $(dirname $0)/common
+
+rc=77
+
+set -ex
+
+trap 'err $LINENO' ERR
+
+check_prereq "jq"
+
+modprobe -r cxl_test
+modprobe cxl_test
+rc=1
+
+check_qos_decoders () {
+ # check root decoders have expected fake qos_class
+ # also make sure the number of root decoders equal to the number
+ # with qos_class found
+ json=$($CXL list -b cxl_test -D -d root)
+ decoders=$(echo "$json" | jq length)
+ count=0
+ while read -r qos_class
+ do
+ ((qos_class == TEST_QOS_CLASS)) || err "$LINENO"
+ count=$((count+1))
+ done <<< "$(echo "$json" | jq -r '.[] | .qos_class')"
+
+ ((count == decoders)) || err "$LINENO";
+}
+
+check_qos_memdevs () {
+ # Check that memdevs that expose ram_qos_class or pmem_qos_class have
+ # expected fake value programmed.
+ json=$(cxl list -b cxl_test -M)
+ readarray -t lines < <(jq ".[] | .ram_size, .pmem_size, .ram_qos_class,
.pmem_qos_class" <<<"$json")
+ for (( i = 0; i < ${#lines[@]}; i += 4 ))
+ do
+ ram_size=${lines[i]}
+ pmem_size=${lines[i+1]}
+ ram_qos_class=${lines[i+2]}
+ pmem_qos_class=${lines[i+3]}
+
+ if [[ "$ram_size" != null ]]
+ then
+ ((ram_qos_class == TEST_QOS_CLASS)) || err "$LINENO"
+ fi
+ if [[ "$pmem_size" != null ]]
+ then
+ ((pmem_qos_class == TEST_QOS_CLASS)) || err "$LINENO"
+ fi
+ done
+}
+
+# Based on cxl-create-region.sh create_single()
+destroy_regions()
+{
+ if [[ "$*" ]]; then
+ $CXL destroy-region -f -b cxl_test "$@"
+ else
+ $CXL destroy-region -f -b cxl_test all
+ fi
+}
+
+create_region_check_qos()
+{
+ # the 5th cxl_test decoder is expected to target a single-port
+ # host-bridge. Older cxl_test implementations may not define it,
+ # so skip the test in that case.
+ decoder=$($CXL list -b cxl_test -D -d root |
+ jq -r ".[4] |
+ select(.pmem_capable == true) |
+ select(.nr_targets == 1) |
+ .decoder")
+
+ if [[ ! $decoder ]]; then
+ echo "no single-port host-bridge decoder found, skipping"
+ return
+ fi
+
+ # Send create-region with -Q to enforce qos_class matching
+ region=$($CXL create-region -Q -d "$decoder" | jq -r ".region")
+ if [[ ! $region ]]; then
+ echo "failed to create single-port host-bridge region"
+ err "$LINENO"
+ fi
+
+ destroy_regions "$region"
+}
+
+check_qos_decoders
+
+check_qos_memdevs
+
+create_region_check_qos
+
+check_dmesg "$LINEO"
+
+modprobe -r cxl_test
diff --git a/test/meson.build b/test/meson.build
index 5eb35749a95b..4892df11119f 100644
--- a/test/meson.build
+++ b/test/meson.build
@@ -160,6 +160,7 @@ cxl_events = find_program('cxl-events.sh')
cxl_poison = find_program('cxl-poison.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')
tests = [
[ 'libndctl', libndctl, 'ndctl' ],
@@ -192,6 +193,7 @@ tests = [
[ 'cxl-poison.sh', cxl_poison, 'cxl' ],
[ 'cxl-sanitize.sh', cxl_sanitize, 'cxl' ],
[ 'cxl-destroy-region.sh', cxl_destroy_region, 'cxl' ],
+ [ 'cxl-qos-class.sh', cxl_qos_class, 'cxl' ],
]
if get_option('destructive').enabled()
--
2.43.0
