make -C tools/testing/selftests TARGETS="drivers/net/netdevsim" TEST_PROGSS=ethtool-ring.sh TEST_GEN_PROGS="" run_tests
make: Entering directory '/home/virtme/testing-13/tools/testing/selftests'
make[1]: Entering directory '/home/virtme/testing-13/tools/testing/selftests/drivers/net/netdevsim'
make[1]: Nothing to be done for 'all'.
make[1]: Leaving directory '/home/virtme/testing-13/tools/testing/selftests/drivers/net/netdevsim'
make[1]: Entering directory '/home/virtme/testing-13/tools/testing/selftests/drivers/net/netdevsim'
TAP version 13
1..1
# timeout set to 600
# selftests: drivers/net/netdevsim: ethtool-ring.sh
# PASSED all 4 checks
ok 1 selftests: drivers/net/netdevsim: ethtool-ring.sh
make[1]: Leaving directory '/home/virtme/testing-13/tools/testing/selftests/drivers/net/netdevsim'
make: Leaving directory '/home/virtme/testing-13/tools/testing/selftests'
xx__-> echo $?
0
xx__->