torture: Correctly fetch number of CPUs for non-English languages

Grepping for "CPU" on lscpu output isn't always successful, depending
on the local language setting.  As a result, the build can be aborted
early with:

	"make: the '-j' option requires a positive integer argument"

This commit therefore uses the human-language-independent approach
available via the getconf command, both in kvm-build.sh and in
kvm-remote.sh.
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

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

@@ -42,7 +42,7 @@ then
 fi
 
 # Tell "make" to use double the number of real CPUs on the build system.
-ncpus="`lscpu | grep '^CPU(' | awk '{ print $2 }'`"
+ncpus="`getconf _NPROCESSORS_ONLN`"
 make -j$((2 * ncpus)) $TORTURE_KMAKE_ARG > $resdir/Make.out 2>&1
 retval=$?
 if test $retval -ne 0 || grep "rcu[^/]*": < $resdir/Make.out | egrep -q "Stop|Error|error:|warning:" || egrep -q "Stop|Error|error:" < $resdir/Make.out

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

@@ -136,7 +136,7 @@ chmod +x $T/bin/kvm-remote-*.sh
 # Check first to avoid the need for cleanup for system-name typos
 for i in $systems
 do
-	ncpus="`ssh $i lscpu | grep '^CPU(' | awk '{ print $2 }'`"
+	ncpus="`ssh $i getconf _NPROCESSORS_ONLN 2> /dev/null`"
 	echo $i: $ncpus CPUs " " `date` | tee -a "$oldrun/remote-log"
 	ret=$?
 	if test "$ret" -ne 0