[PATCH v2 -next 11/11] cgroup/cpuset: add sefltest for cpuset v1

Chen Ridong
2024-08-26T13:34:56Z

There is only hotplug test for cpuset v1, just add base read/write test
for cpuset v1.

Signed-off-by: Chen Ridong <chenridong@huawei.com>
---
MAINTAINERS | 1 +
.../selftests/cgroup/test_cpuset_v1_base.sh | 77 +++++++++++++++++++
2 files changed, 78 insertions(+)
create mode 100755 tools/testing/selftests/cgroup/test_cpuset_v1_base.sh

diff --git a/MAINTAINERS b/MAINTAINERS
index 3b5ec1cafd95..b59f54e1e30d 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -5703,6 +5703,7 @@ F: kernel/cgroup/cpuset-v1.c
F: kernel/cgroup/cpuset.c
F: tools/testing/selftests/cgroup/test_cpuset.c
F: tools/testing/selftests/cgroup/test_cpuset_prs.sh
+F: tools/testing/selftests/cgroup/test_cpuset_v1_base.sh

CONTROL GROUP - MEMORY RESOURCE CONTROLLER (MEMCG)
M: Johannes Weiner <hannes@cmpxchg.org>
diff --git a/tools/testing/selftests/cgroup/test_cpuset_v1_base.sh b/tools/testing/selftests/cgroup/test_cpuset_v1_base.sh
new file mode 100755
index 000000000000..42a6628fb8bc
--- /dev/null
+++ b/tools/testing/selftests/cgroup/test_cpuset_v1_base.sh
@@ -0,0 +1,77 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+#
+# Basc test for cpuset v1 interfaces write/read
+#
+
+skip_test() {
+ echo "$1"
+ echo "Test SKIPPED"
+ exit 4 # ksft_skip
+}
+
+write_test() {
+ dir=$1
+ interface=$2
+ value=$3
+ original=$(cat $dir/$interface)
+ echo "testing $interface $value"
+ echo $value > $dir/$interface
+ new=$(cat $dir/$interface)
+ [[ $value -ne $(cat $dir/$interface) ]] && {
+ echo "$interface write $value failed: new:$new"
+ exit 1
+ }
+}
+
+[[ $(id -u) -eq 0 ]] || skip_test "Test must be run as root!"
+
+# Find cpuset v1 mount point
+CPUSET=$(mount -t cgroup | grep cpuset | head -1 | awk '{print $3}')
+[[ -n "$CPUSET" ]] || skip_test "cpuset v1 mount point not found!"
+
+#
+# Create a test cpuset, read write test
+#
+TDIR=test$$
+[[ -d $CPUSET/$TDIR ]] || mkdir $CPUSET/$TDIR
+
+ITF_MATRIX=(
+ #interface value expect root_only
+ 'cpuset.cpus 0-1 0-1 0'
+ 'cpuset.mem_exclusive 1 1 0'
+ 'cpuset.mem_exclusive 0 0 0'
+ 'cpuset.mem_hardwall 1 1 0'
+ 'cpuset.mem_hardwall 0 0 0'
+ 'cpuset.memory_migrate 1 1 0'
+ 'cpuset.memory_migrate 0 0 0'
+ 'cpuset.memory_spread_page 1 1 0'
+ 'cpuset.memory_spread_page 0 0 0'
+ 'cpuset.memory_spread_slab 1 1 0'
+ 'cpuset.memory_spread_slab 0 0 0'
+ 'cpuset.mems 0 0 0'
+ 'cpuset.sched_load_balance 1 1 0'
+ 'cpuset.sched_load_balance 0 0 0'
+ 'cpuset.sched_relax_domain_level 2 2 0'
+ 'cpuset.memory_pressure_enabled 1 1 1'
+ 'cpuset.memory_pressure_enabled 0 0 1'
+)
+
+run_test()
+{
+ cnt="${ITF_MATRIX[@]}"
+ for i in "${ITF_MATRIX[@]}" ; do
+ args=($i)
+ root_only=${args[3]}
+ [[ $root_only -eq 1 ]] && {
+ write_test "$CPUSET" "${args[0]}" "${args[1]}" "${args[2]}"
+ continue
+ }
+ write_test "$CPUSET/$TDIR" "${args[0]}" "${args[1]}" "${args[2]}"
+ done
+}
+
+run_test
+rmdir $CPUSET/$TDIR
+echo "Test PASSED"
+exit 0
--
2.34.1