[RFC PATCH 8/8] cgroup/cpuset: Update test_cpuset_prs.sh to handle cpuset.cpus.isolation_full

Waiman Long
2024-01-17T16:36:23Z

Add a new "-F" option to cpuset.cpus.isolation_full to enable
cpuset.cpus.isolation_full for trying out the effect of enabling
full CPU isolation.

Signed-off-by: Waiman Long <longman@redhat.com>
---
.../selftests/cgroup/test_cpuset_prs.sh | 23 ++++++++++++++++++-
1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/cgroup/test_cpuset_prs.sh b/tools/testing/selftests/cgroup/test_cpuset_prs.sh
index b5eb1be2248c..2a8f0cb8d252 100755
--- a/tools/testing/selftests/cgroup/test_cpuset_prs.sh
+++ b/tools/testing/selftests/cgroup/test_cpuset_prs.sh
@@ -32,6 +32,7 @@ NR_CPUS=$(lscpu | grep "^CPU(s):" | sed -e "s/.*:[[:space:]]*//")
PROG=$1
VERBOSE=0
DELAY_FACTOR=1
+ISOLATION_FULL=
SCHED_DEBUG=
while [[ "$1" = -* ]]
do
@@ -44,7 +45,10 @@ do
-d) DELAY_FACTOR=$2
shift
;;
- *) echo "Usage: $PROG [-v] [-d <delay-factor>"
+ -F) ISOLATION_FULL=1
+ shift
+ ;;
+ *) echo "Usage: $PROG [-v] [-d <delay-factor>] [-F]"
exit
;;
esac
@@ -108,6 +112,22 @@ console_msg()
pause 0.01
}

+setup_isolation_full()
+{
+ ISOL_FULL=${CGROUP2}/cpuset.cpus.isolation_full
+ if [[ -n "$ISOLATION_FULL" ]]
+ then
+ echo 1 > $ISOL_FULL
+ set -- $(cat $ISOL_FULL)
+ ISOLATION_FLAGS=$2
+ [[ $VERBOSE -gt 0 ]] && {
+ echo "Full CPU isolation flags: $ISOLATION_FLAGS"
+ }
+ else
+ echo 0 > $ISOL_FULL
+ fi
+}
+
test_partition()
{
EXPECTED_VAL=$1
@@ -930,6 +950,7 @@ test_inotify()
}

trap cleanup 0 2 3 6
+setup_isolation_full
run_state_test TEST_MATRIX
test_isolated
test_inotify
--
2.39.3