[PATCH v3 2/2] selftests: bpf: test_kmod.sh: use modprobe on target device

[naresh . kamboju]

From: Naresh Kamboju <naresh.kamboju@xxxxxxxxxx>

On ARM and ARM64 devices kernel source tree is not available so
insmod "$SRC_TREE/lib/test_bpf.ko" is not working.

On these target devices the test_bpf.ko is installed under
/lib/modules/`uname -r`/kernel/lib/
so use modprobe dry run to check for missing test_bpf.ko module and
insert for testing.

Signed-off-by: Naresh Kamboju <naresh.kamboju@xxxxxxxxxx>
---
 tools/testing/selftests/bpf/test_kmod.sh | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/tools/testing/selftests/bpf/test_kmod.sh b/tools/testing/selftests/bpf/test_kmod.sh
index 2e5a1049e2f2..4757ca7d163c 100755
--- a/tools/testing/selftests/bpf/test_kmod.sh
+++ b/tools/testing/selftests/bpf/test_kmod.sh
@@ -14,6 +14,16 @@ test_run()
 		if [ $? -ne 0 ]; then
 			rc=1
 		fi
+	else
+		# Use modprobe dry run to check for missing test_bpf module
+		if ! /sbin/modprobe -q -n test_bpf; then
+			echo "test_bpf: [SKIP]"
+		elif /sbin/modprobe -q test_bpf; then
+			echo "test_bpf: ok"
+		else
+			echo "test_bpf: [FAIL]"
+			rc=1
+		fi
 	fi
 	rmmod  test_bpf 2> /dev/null
 	dmesg | grep FAIL
-- 
2.14.2