cgroup/cpuset: add sefltest for cpuset v1

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>
Acked-by: Waiman Long <longman@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

diff --git a/MAINTAINERS b/MAINTAINERS
index 3b5ec1cafd958323fc7bb591fcfdb2f734c2ec41..b59f54e1e30dc65ce94fc07ef92aa53b9594501e 100644 (file)
--- 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 (executable)
index 0000000..42a6628
--- /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