test/zdtm: add option -n for batch test

In batch-test mode, the script skips failed individual tests
instead of exiting. This ensures that all zdtm tests can be run
in one pass, which provides better overview of test result.
Signed-off-by: Yicheng Qin <yichengq@google.com>
Acked-by: Andrew Vagin <avagin@parallels.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

test/zdtm.sh

@@ -168,6 +168,7 @@ PAGE_SERVER=0
 PS_PORT=12345
 TCPDUMP_PID=
 COMPILE_ONLY=0
+BATCH_TEST=0
 
 check_criu()
 {
@@ -439,7 +440,11 @@ EOF
 		# with some error code, or checkpoint is complete but return
 		# code is non-zero because of post dump action.
 		if [ "$retcode" -ne 0 ] && [[ "$retcode" -ne 32 || -z "$dump_only" ]]; then
-			echo WARNING: $tname returned $retcode and left running for debug needs
+			if [ $BATCH_TEST -eq 0 ]; then
+				echo WARNING: $tname returned $retcode and left running for debug needs
+			else
+				echo WARNING: $tname failed and returned $retcode
+			fi
 			return 1
 		fi
 
@@ -574,7 +579,13 @@ EOF
 =========================== ERROR OVER ============================
 EOF
 )
-	exit 1
+	if [ $BATCH_TEST -eq 0 ]; then
+		exit 1
+	else
+		# kill failed test
+		local tname=`basename $test`
+		killall -9 $tname > /dev/null 2>&1
+	fi
 }
 
 checkout()
@@ -653,6 +664,11 @@ while :; do
 		shift
 		continue
 	fi
+	if [ "$1" = "-n" ]; then
+		BATCH_TEST=1
+		shift
+		continue
+	fi
 	break;
 done
 
@@ -679,6 +695,7 @@ Options:
 	-t : mount tmpfs for dump files
 	-a <FILE>.tar.gz : save archive with dump files and logs
 	-g : Generate executables only
+	-n : Batch test
 EOF
 elif [ "${1:0:1}" = '-' ]; then
 	echo "unrecognized option $1"
@@ -705,6 +722,15 @@ else
 	for t in $(echo "$IPC_TEST_LIST" | grep -x "$pattern"); do
 		run_test $t -n ipc || case_error $t
 	done
+
+	if [ $COMPILE_ONLY -eq 0 ]; then
+		if [ -n "$ZDTM_FAILED" ]; then
+			echo ZDTM tests FAIL.
+		else
+			echo ZDTM tests PASS.
+		fi
+	fi
 fi
 
-[ -n "$TMP_TREE" ] && rm -rf $TMP_TREE || exit 0
+[ -n "$TMP_TREE" ] && rm -rf $TMP_TREE
+[ -n "$ZDTM_FAILED" ] && exit 1