linaro su - works

hikey login: linaro
[   23.479986] audit_printk_skb: 87 callbacks suppressed
[   23.485351] audit: type=1006 audit(1495284014.059:12): pid=2444 uid=0 subj=kernel old-auid=4294967295 auid=1000 old-ses=4294967295 ses=1 res=1
hikey:~$ su -
root@hikey:~# /usr/bin/kselftests/futex/functional/futex_requeue_pi
futex_requeue_pi: Test requeue functionality
        Arguments: broadcast=0 locked=0 owner=0 timeout=0ns
Result:  PASS
root@hikey:~#