selftests/cgroup: Fix string comparison in write_test

Use string comparison (!=) instead of numeric comparison (-ne) for
cpuset values like "0-1".
For example:
$ [[ "0-1" != "2-3" ]] && echo "true" || echo "false"
true
$ [[ "0-1" -ne "2-3" ]] && echo "true" || echo "false"
false

Signed-off-by: Hongfu Li <lihongfu@kylinos.cn>
Signed-off-by: Tejun Heo <tj@kernel.org>

diff --git a/tools/testing/selftests/cgroup/test_cpuset_v1_base.sh b/tools/testing/selftests/cgroup/test_cpuset_v1_base.sh
index 42a6628fb8bc3edc286fb17407f5ba3ac84ccd79..1c0444729e707d412c20753dc8dd67f64156e9da 100755 (executable)
--- a/tools/testing/selftests/cgroup/test_cpuset_v1_base.sh
+++ b/tools/testing/selftests/cgroup/test_cpuset_v1_base.sh
@@ -18,7 +18,7 @@ write_test() {
        echo "testing $interface $value"
        echo $value > $dir/$interface
        new=$(cat $dir/$interface)
-       [[ $value -ne $(cat $dir/$interface) ]] && {
+       [[ "$value" != "$new" ]] && {
                echo "$interface write $value failed: new:$new"
                exit 1
        }