[LTP] [PATCH] cgroup_regression_test: Use unique names for hierarchies in each test

[Avinesh Kumar]

Recently we started having failures where mounting cgroup in quick
succession after umount of same named hierarchy fails with EBUSY

cgroup_regression_test 1 TPASS: no kernel bug was found
mount: /tmp/LTP_cgroup_regression_test.ZFwS3JkX4c/cgroup: cgroup already mounted or mount point busy.
       dmesg(1) may have more information after failed mount system call.
cgroup_regression_test 2 TFAIL: Failed to mount cgroup filesystem

Updating test to use unique names for cgroup hierarchies in each
subtest.

Suggested-by: Michal Koutný <mkoutny@suse.com>
Signed-off-by: Avinesh Kumar <akumar@suse.de>
---
 .../controllers/cgroup/cgroup_regression_test.sh       | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/testcases/kernel/controllers/cgroup/cgroup_regression_test.sh b/testcases/kernel/controllers/cgroup/cgroup_regression_test.sh
index 276231fe8..c1bf4810f 100755
--- a/testcases/kernel/controllers/cgroup/cgroup_regression_test.sh
+++ b/testcases/kernel/controllers/cgroup/cgroup_regression_test.sh
@@ -93,7 +93,7 @@ test1()
 	cgroup_regression_fork_processes &
 	sleep 1
 
-	mount -t cgroup -o none,name=foo cgroup cgroup/
+	mount -t cgroup -o none,name=foo1 cgroup cgroup/
 	if [ $? -ne 0 ]; then
 		tst_res TFAIL "failed to mount cgroup filesystem"
 		kill -TERM $!
@@ -118,7 +118,7 @@ test2()
 	local val1
 	local val2
 
-	mount -t cgroup -o none,name=foo cgroup cgroup/
+	mount -t cgroup -o none,name=foo2 cgroup cgroup/
 	if [ $? -ne 0 ]; then
 		tst_res TFAIL "Failed to mount cgroup filesystem"
 		return
@@ -204,7 +204,7 @@ test4()
 		return
 	fi
 
-	mount -t cgroup -o none,name=foo cgroup cgroup/
+	mount -t cgroup -o none,name=foo4 cgroup cgroup/
 	mkdir cgroup/0
 	rmdir cgroup/0
 	tst_umount $PWD/cgroup
@@ -309,7 +309,7 @@ test_7_2()
 {
 	local subsys=$1
 
-	mount -t cgroup -o none,name=foo cgroup cgroup/
+	mount -t cgroup -o none,name=foo72 cgroup cgroup/
 	if [ $? -ne 0 ]; then
 		tst_res TFAIL "failed to mount cgroup"
 		return
@@ -370,7 +370,7 @@ test7()
 #---------------------------------------------------------------------------
 test8()
 {
-	mount -t cgroup -o none,name=foo cgroup cgroup/
+	mount -t cgroup -o none,name=foo8 cgroup cgroup/
 	if [ $? -ne 0 ]; then
 		tst_res TFAIL "failed to mount cgroup filesystem"
 		return
-- 
2.43.0