torture: Rename RCU_QEMU_MAC to TORTURE_QEMU_MAC

This commit makes the torture scripts a bit more RCU-independent.
It also drops an redundant "export" statement.
Signed-off-by: NPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: NJosh Triplett <josh@joshtriplett.org>

tools/testing/selftests/rcutorture/bin/functions.sh

@@ -124,7 +124,7 @@ identify_qemu_append () {
 
 # identify_qemu_args qemu-cmd serial-file
 #
-# Output arguments for qemu arguments based on the RCU_QEMU_MAC
+# Output arguments for qemu arguments based on the TORTURE_QEMU_MAC
 # and TORTURE_QEMU_INTERACTIVE environment variables.
 identify_qemu_args () {
 	case "$1" in
@@ -133,9 +133,9 @@ identify_qemu_args () {
 	qemu-system-ppc64)
 		echo -enable-kvm -M pseries -cpu POWER7 -nodefaults
 		echo -device spapr-vscsi
-		if test -n "$TORTURE_QEMU_INTERACTIVE" -a -n "$RCU_QEMU_MAC"
+		if test -n "$TORTURE_QEMU_INTERACTIVE" -a -n "$TORTURE_QEMU_MAC"
 		then
-			echo -device spapr-vlan,netdev=net0,mac=$RCU_QEMU_MAC
+			echo -device spapr-vlan,netdev=net0,mac=$TORTURE_QEMU_MAC
 			echo -netdev bridge,br=br0,id=net0
 		elif test -n "$TORTURE_QEMU_INTERACTIVE"
 		then

tools/testing/selftests/rcutorture/bin/kvm.sh

@@ -128,7 +128,7 @@ do
 		;;
 	--mac)
 		checkarg --mac "(MAC address)" $# "$2" '^\([0-9a-fA-F]\{2\}:\)\{5\}[0-9a-fA-F]\{2\}$' error
-		RCU_QEMU_MAC=$2; export RCU_QEMU_MAC
+		TORTURE_QEMU_MAC=$2
 		shift
 		;;
 	--no-initrd)
@@ -379,7 +379,7 @@ then
 	echo TORTURE_KMAKE_ARG="$TORTURE_KMAKE_ARG; export TORTURE_KMAKE_ARG"
 	echo RCU_QEMU_CMD="$RCU_QEMU_CMD; export RCU_QEMU_CMD"
 	echo TORTURE_QEMU_INTERACTIVE="$TORTURE_QEMU_INTERACTIVE; export TORTURE_QEMU_INTERACTIVE"
-	echo RCU_QEMU_MAC="$RCU_QEMU_MAC; export RCU_QEMU_MAC"
+	echo TORTURE_QEMU_MAC="$TORTURE_QEMU_MAC; export TORTURE_QEMU_MAC"
 	echo "mkdir -p "$resdir" || :"
 	echo "mkdir $resdir/$ds"
 	cat $T/script