[CRIU] [PATCH 2/2] zdtm.sh: add ability to use a freezer cgroup

[Andrey Vagin]

It allows to freeze processes faster

Signed-off-by: Andrey Vagin <avagin at openvz.org>
---
 test/zdtm.sh | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/test/zdtm.sh b/test/zdtm.sh
index 6f63622..b6e78b5 100755
--- a/test/zdtm.sh
+++ b/test/zdtm.sh
@@ -371,6 +371,7 @@ BATCH_TEST=0
 SPECIFIED_NAME_USED=0
 START_FROM="."
 RESTORE_SIBLING=""
+FREEZE_CGROUP=""
 
 zdtm_sep()
 { (
@@ -563,6 +564,9 @@ start_test()
 	fi
 
 	(
+		if [ -n "$FREEZE_CGROUP" ]; then
+			echo 0 > /sys/fs/cgroup/freezer/test/tasks
+		fi
 		# Here is no way to set FD_CLOEXEC on 3
 		exec 3>&-
 		make -C $tdir $tname.pid
@@ -757,6 +761,9 @@ EOF
 			fi
 			[ -n "$snappdir" ] && cpt_args="$cpt_args --prev-images-dir=$snappdir"
 		fi
+		if [ -n "$FREEZE_CGROUP" ]; then
+			cpt_args="$cpt_args --freeze-cgroup $FREEZE_CGROUP"
+		fi
 
 		[ -n "$dump_only" ] && cpt_args="$cpt_args $POSTDUMP"
 
@@ -1058,6 +1065,11 @@ while :; do
 		AUTO_DEDUP=1
 		shift
 		;;
+	  --freeze-cgroup)
+		shift
+		FREEZE_CGROUP=$1
+		shift
+		;;
 	  -g)
 		COMPILE_ONLY=1
 		shift
-- 
2.1.0