zdtm: add debug to investigate fails of maps007

Reported-by: Mr Jenkins
Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

test/zdtm.sh

@@ -800,7 +800,7 @@ EOF
 	fi
 
 	sltime=1
-	for i in `seq 50`; do
+	for i in `seq 200`; do
 		kill -0 $PID > /dev/null 2>&1 || break
 		echo Waiting...
 		sleep 0.$sltime
@@ -825,6 +825,7 @@ EOF
 	fi
 
 	cat $test.out
+	[ $i -gt 50 ] && return 2 # waiting too long
 	cat $test.out | grep -q PASS || return 2
 	[ "$CLEANUP" -ne 0 ] && rm -rf --one-file-system `dirname $ddump`
 	echo "Test: $test, Result: PASS"

test/zdtm/live/transition/maps007.c

@@ -84,6 +84,8 @@ int main(int argc, char **argv)
 			if (!futex_get(&shm->stop))
 				/* shm->delta must be always bigger than MAX_DELTA */
 				futex_wait_while_lt(&shm->delta, MAX_DELTA + 2);
+			else if (count % 100 == 0)
+				test_msg("count %d delta %d\n", count, futex_get(&shm->delta)); /* heartbeat */
 
 			if (futex_get(&shm->stop) && atomic_get(&shm->delta.raw) == MAX_DELTA)
 				break;