While I'm sure this is useful I think we should bring it back later.

It's usage of pid/tgid is incorrect, you have to get/put
pid/tgids not store them away.
Signed-off-by: NDave Airlie <airlied@redhat.com>
Reviewed-by: NTony Cheng <Tony.Cheng@amd.com>
Acked-by: NHarry Wentland <Harry.Wentland@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>