rcutorture: Add --kmake-arg argument to kvm.sh

This commit adds the --kmake-arg to kvm.sh, which allows passing in
things like "V=1" to see the build commands, as well as enabling the
CROSS_COMPILE= make macro used for cross-building.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Greg KH <gregkh@linuxfoundation.org>

2 files changed, 8 insertions, 1 deletions

diff --git a/tools/testing/selftests/rcutorture/bin/kvm-build.sh b/tools/testing/selftests/rcutorture/bin/kvm-build.sh
index 618ef2c543fd..8c4aa7d63394 100755
--- a/tools/testing/selftests/rcutorture/bin/kvm-build.sh
+++ b/tools/testing/selftests/rcutorture/bin/kvm-build.sh
@@ -60,7 +60,7 @@ then
         exit 2
 fi
 ncpus=`cpus2use.sh`
-make O=$builddir -j$ncpus > $builddir/Make.out 2>&1
+make O=$builddir -j$ncpus $RCU_KMAKE_ARG > $builddir/Make.out 2>&1
 retval=$?
 if test $retval -ne 0 || grep "rcu[^/]*": < $builddir/Make.out | egrep -q "Stop|Error|error:|warning:" || egrep -q "Stop|Error|error:" < $builddir/Make.out
 then
diff --git a/tools/testing/selftests/rcutorture/bin/kvm.sh b/tools/testing/selftests/rcutorture/bin/kvm.sh
index a833160dcdc3..69b6523bb854 100644
--- a/tools/testing/selftests/rcutorture/bin/kvm.sh
+++ b/tools/testing/selftests/rcutorture/bin/kvm.sh
@@ -34,6 +34,7 @@ dur=30
 KVM="`pwd`/tools/testing/selftests/rcutorture"; export KVM
 builddir="${KVM}/b1"
 RCU_INITRD="$KVM/initrd"; export RCU_INITRD
+RCU_KMAKE_ARG=""; export RCU_KMAKE_ARG
 resdir=""
 configs=""
 ds=`date +%Y.%m.%d-%H:%M:%S`
@@ -48,6 +49,7 @@ usage () {
         echo "       --datestamp string"
         echo "       --duration minutes"
         echo "       --interactive"
+        echo "       --kmake-arg kernel-make-arguments"
         echo "       --kversion vN.NN"
         echo "       --mac nn:nn:nn:nn:nn:nn"
         echo "       --no-initrd"
@@ -114,6 +116,11 @@ do
         --interactive)
                 RCU_QEMU_INTERACTIVE=1; export RCU_QEMU_INTERACTIVE
                 ;;
+        --kmake-arg)
+                checkarg --kmake-arg "(kernel make arguments)" $# "$2" '.*' '^error$'
+                RCU_KMAKE_ARG="$2"; export RCU_KMAKE_ARG
+                shift
+                ;;
         --kversion)
                 checkarg --kversion "(kernel version)" $# "$2" '^v[0-9.]*$' '^error'
                 kversion=$2