include interrupt handling time into system time

Change-Id: If2ed2d488b4040d288d712f0a244505adbcec6f5
Refs: #1221

test/issues/1221/C1221.sh

@@ -0,0 +1,21 @@
+#!/bin/sh
+USELTP=1
+USEOSTEST=0
+
+. ../../common.sh
+
+################################################################################
+$MCEXEC ./C1221T01
+
+for i in getrusage01:02 getrusage02:03 getrusage03:04 getrusage04:05; do
+	tp=`echo $i|sed 's/:.*//'`
+	id=`echo $i|sed 's/.*://'`
+	PATH=$PATH:$LTPBIN $MCEXEC $LTPBIN/$tp 2>&1 | tee $tp.txt
+	ok=`grep TPASS $tp.txt | wc -l`
+	ng=`grep TFAIL $tp.txt | wc -l`
+	if [ $ng = 0 ]; then
+		echo "*** C1221T$id: $tp PASS ($ok)"
+	else
+		echo "*** C1221T$id: $tp FAIL (ok=$ok ng=%ng)"
+	fi
+done