From: Ben Goz <ben.goz@amd.com>
Date: Wed, 1 Nov 2017 19:21:30 -0400
Subject: drm/amdkfd: Register/Deregister process on qpd resolution
Git-commit: 5a29ad6b9e0899cd17988895fa64fd3e9408ab8e
Patch-mainline: v4.15-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

Process registration needs to happen on each device. So use per-device
queue lists to determine when to register/deregister the process.

Signed-off-by: Ben Goz <ben.goz@amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c |    9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

--- a/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
@@ -177,7 +177,8 @@ int pqm_create_queue(struct process_queu
 	if (retval != 0)
 		return retval;
 
-	if (list_empty(&pqm->queues)) {
+	if (list_empty(&pdd->qpd.queues_list) &&
+	    list_empty(&pdd->qpd.priv_queue_list)) {
 		pdd->qpd.pqm = pqm;
 		dev->dqm->ops.register_process(dev->dqm, &pdd->qpd);
 	}
@@ -248,7 +249,8 @@ err_create_queue:
 err_allocate_pqn:
 	/* check if queues list is empty unregister process from device */
 	clear_bit(*qid, pqm->queue_slot_bitmap);
-	if (list_empty(&pqm->queues))
+	if (list_empty(&pdd->qpd.queues_list) &&
+	    list_empty(&pdd->qpd.priv_queue_list))
 		dev->dqm->ops.unregister_process(dev->dqm, &pdd->qpd);
 	return retval;
 }
@@ -302,7 +304,8 @@ int pqm_destroy_queue(struct process_que
 	kfree(pqn);
 	clear_bit(qid, pqm->queue_slot_bitmap);
 
-	if (list_empty(&pqm->queues))
+	if (list_empty(&pdd->qpd.queues_list) &&
+	    list_empty(&pdd->qpd.priv_queue_list))
 		dqm->ops.unregister_process(dqm, &pdd->qpd);
 
 	return retval;