[PATCH 4/6] drm/amdkfd: Separate mqd allocation and initialization

[PATCH 4/6] drm/amdkfd: Separate mqd allocation and initialization

[Zeng, Oak]

Introduce a new mqd allocation interface and split the original
init_mqd function into two functions: allocate_mqd and init_mqd.
Also renamed uninit_mqd to free_mqd. This is preparation work to
fix a circular lock dependency.

Change-Id: I26e53ee1abcdd688ad11d35b433da77e3fa1bee7
Signed-off-by: Oak Zeng <Oak.Zeng@amd.com>
---
 .../gpu/drm/amd/amdkfd/kfd_device_queue_manager.c  | 34 ++++-----
 drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c      | 16 ++--
 drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c       |  4 +-
 drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h       | 18 +++--
 drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c   | 78 +++++++------------
 drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c    | 78 +++++++------------
 drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c    | 88 ++++++++--------------
 7 files changed, 124 insertions(+), 192 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
index 3c042eb..10d4f4f 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
@@ -319,11 +319,11 @@ static int create_queue_nocpsch(struct device_queue_manager *dqm,
 	if (retval)
 		goto out_deallocate_hqd;
 
-	retval = mqd_mgr->init_mqd(mqd_mgr, &q->mqd, &q->mqd_mem_obj,
-				&q->gart_mqd_addr, &q->properties);
-	if (retval)
+	q->mqd_mem_obj = mqd_mgr->allocate_mqd(mqd_mgr->dev, &q->properties);
+	if (!q->mqd_mem_obj)
 		goto out_deallocate_doorbell;
-
+	mqd_mgr->init_mqd(mqd_mgr, &q->mqd, q->mqd_mem_obj,
+				&q->gart_mqd_addr, &q->properties);
 	if (q->properties.is_active) {
 
 		if (WARN(q->process->mm != current->mm,
@@ -333,7 +333,7 @@ static int create_queue_nocpsch(struct device_queue_manager *dqm,
 			retval = mqd_mgr->load_mqd(mqd_mgr, q->mqd, q->pipe,
 					q->queue, &q->properties, current->mm);
 		if (retval)
-			goto out_uninit_mqd;
+			goto out_free_mqd;
 	}
 
 	list_add(&q->list, &qpd->queues_list);
@@ -355,8 +355,8 @@ static int create_queue_nocpsch(struct device_queue_manager *dqm,
 			dqm->total_queue_count);
 	goto out_unlock;
 
-out_uninit_mqd:
-	mqd_mgr->uninit_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
+out_free_mqd:
+	mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
 out_deallocate_doorbell:
 	deallocate_doorbell(qpd, q);
 out_deallocate_hqd:
@@ -450,7 +450,7 @@ static int destroy_queue_nocpsch_locked(struct device_queue_manager *dqm,
 	if (retval == -ETIME)
 		qpd->reset_wavefronts = true;
 
-	mqd_mgr->uninit_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
+	mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
 
 	list_del(&q->list);
 	if (list_empty(&qpd->queues_list)) {
@@ -527,7 +527,7 @@ static int update_queue(struct device_queue_manager *dqm, struct queue *q)
 		}
 	}
 
-	retval = mqd_mgr->update_mqd(mqd_mgr, q->mqd, &q->properties);
+	mqd_mgr->update_mqd(mqd_mgr, q->mqd, &q->properties);
 
 	/*
 	 * check active state vs. the previous state and modify
@@ -1160,11 +1160,11 @@ static int create_queue_cpsch(struct device_queue_manager *dqm, struct queue *q,
 		dqm->asic_ops.init_sdma_vm(dqm, q, qpd);
 	q->properties.tba_addr = qpd->tba_addr;
 	q->properties.tma_addr = qpd->tma_addr;
-	retval = mqd_mgr->init_mqd(mqd_mgr, &q->mqd, &q->mqd_mem_obj,
-				&q->gart_mqd_addr, &q->properties);
-	if (retval)
+	q->mqd_mem_obj = mqd_mgr->allocate_mqd(mqd_mgr->dev, &q->properties);
+	if (!q->mqd_mem_obj)
 		goto out_deallocate_doorbell;
-
+	mqd_mgr->init_mqd(mqd_mgr, &q->mqd, q->mqd_mem_obj,
+				&q->gart_mqd_addr, &q->properties);
 	dqm_lock(dqm);
 
 	list_add(&q->list, &qpd->queues_list);
@@ -1373,8 +1373,8 @@ static int destroy_queue_cpsch(struct device_queue_manager *dqm,
 
 	dqm_unlock(dqm);
 
-	/* Do uninit_mqd after dqm_unlock(dqm) to avoid circular locking */
-	mqd_mgr->uninit_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
+	/* Do free_mqd after dqm_unlock(dqm) to avoid circular locking */
+	mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
 
 	return retval;
 
@@ -1615,14 +1615,14 @@ static int process_termination_cpsch(struct device_queue_manager *dqm,
 		kfd_dec_compute_active(dqm->dev);
 
 	/* Lastly, free mqd resources.
-	 * Do uninit_mqd() after dqm_unlock to avoid circular locking.
+	 * Do free_mqd() after dqm_unlock to avoid circular locking.
 	 */
 	list_for_each_entry_safe(q, next, &qpd->queues_list, list) {
 		mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type(
 				q->properties.type)];
 		list_del(&q->list);
 		qpd->queue_count--;
-		mqd_mgr->uninit_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
+		mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
 	}
 
 	return retval;
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c b/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c
index 1cc03b3..229500c 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c
@@ -132,13 +132,14 @@ static bool initialize(struct kernel_queue *kq, struct kfd_dev *dev,
 	kq->queue->device = dev;
 	kq->queue->process = kfd_get_process(current);
 
-	retval = kq->mqd_mgr->init_mqd(kq->mqd_mgr, &kq->queue->mqd,
-					&kq->queue->mqd_mem_obj,
+	kq->queue->mqd_mem_obj = kq->mqd_mgr->allocate_mqd(kq->mqd_mgr->dev,
+					&kq->queue->properties);
+	if (!kq->queue->mqd_mem_obj)
+		goto err_allocate_mqd;
+	kq->mqd_mgr->init_mqd(kq->mqd_mgr, &kq->queue->mqd,
+					kq->queue->mqd_mem_obj,
 					&kq->queue->gart_mqd_addr,
 					&kq->queue->properties);
-	if (retval != 0)
-		goto err_init_mqd;
-
 	/* assign HIQ to HQD */
 	if (type == KFD_QUEUE_TYPE_HIQ) {
 		pr_debug("Assigning hiq to hqd\n");
@@ -164,7 +165,8 @@ static bool initialize(struct kernel_queue *kq, struct kfd_dev *dev,
 
 	return true;
 err_alloc_fence:
-err_init_mqd:
+	kq->mqd_mgr->free_mqd(kq->mqd_mgr, kq->queue->mqd, kq->queue->mqd_mem_obj);
+err_allocate_mqd:
 	uninit_queue(kq->queue);
 err_init_queue:
 	kfd_gtt_sa_free(dev, kq->wptr_mem);
@@ -193,7 +195,7 @@ static void uninitialize(struct kernel_queue *kq)
 	else if (kq->queue->properties.type == KFD_QUEUE_TYPE_DIQ)
 		kfd_gtt_sa_free(kq->dev, kq->fence_mem_obj);
 
-	kq->mqd_mgr->uninit_mqd(kq->mqd_mgr, kq->queue->mqd,
+	kq->mqd_mgr->free_mqd(kq->mqd_mgr, kq->queue->mqd,
 				kq->queue->mqd_mem_obj);
 
 	kfd_gtt_sa_free(kq->dev, kq->rptr_mem);
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c
index cc04b362..d6cf391 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c
@@ -45,7 +45,7 @@ int pipe_priority_map[] = {
 	KFD_PIPE_PRIORITY_CS_HIGH
 };
 
-struct kfd_mem_obj *allocate_hiq_mqd(struct kfd_dev *dev)
+struct kfd_mem_obj *allocate_hiq_mqd(struct kfd_dev *dev, struct queue_properties *q)
 {
 	struct kfd_mem_obj *mqd_mem_obj = NULL;
 
@@ -86,7 +86,7 @@ struct kfd_mem_obj *allocate_sdma_mqd(struct kfd_dev *dev,
 	return mqd_mem_obj;
 }
 
-void uninit_mqd_hiq_sdma(struct mqd_manager *mm, void *mqd,
+void free_mqd_hiq_sdma(struct mqd_manager *mm, void *mqd,
 			struct kfd_mem_obj *mqd_mem_obj)
 {
 	WARN_ON(!mqd_mem_obj->gtt_mem);
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h
index 66b8c67..550b61e 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h
@@ -39,7 +39,7 @@
  * @destroy_mqd: Destroys the HQD slot and by that preempt the relevant queue.
  * Used only for no cp scheduling.
  *
- * @uninit_mqd: Releases the mqd buffer from local gpu memory.
+ * @free_mqd: Releases the mqd buffer from local gpu memory.
  *
  * @is_occupied: Checks if the relevant HQD slot is occupied.
  *
@@ -64,8 +64,11 @@
  */
 extern int pipe_priority_map[];
 struct mqd_manager {
-	int	(*init_mqd)(struct mqd_manager *mm, void **mqd,
-			struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
+	struct kfd_mem_obj*	(*allocate_mqd)(struct kfd_dev *kfd,
+		struct queue_properties *q);
+
+	void	(*init_mqd)(struct mqd_manager *mm, void **mqd,
+			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
 			struct queue_properties *q);
 
 	int	(*load_mqd)(struct mqd_manager *mm, void *mqd,
@@ -73,7 +76,7 @@ struct mqd_manager {
 				struct queue_properties *p,
 				struct mm_struct *mms);
 
-	int	(*update_mqd)(struct mqd_manager *mm, void *mqd,
+	void	(*update_mqd)(struct mqd_manager *mm, void *mqd,
 				struct queue_properties *q);
 
 	int	(*destroy_mqd)(struct mqd_manager *mm, void *mqd,
@@ -81,7 +84,7 @@ struct mqd_manager {
 				unsigned int timeout, uint32_t pipe_id,
 				uint32_t queue_id);
 
-	void	(*uninit_mqd)(struct mqd_manager *mm, void *mqd,
+	void	(*free_mqd)(struct mqd_manager *mm, void *mqd,
 				struct kfd_mem_obj *mqd_mem_obj);
 
 	bool	(*is_occupied)(struct mqd_manager *mm, void *mqd,
@@ -102,11 +105,12 @@ struct mqd_manager {
 	uint32_t mqd_size;
 };
 
-struct kfd_mem_obj *allocate_hiq_mqd(struct kfd_dev *dev);
+struct kfd_mem_obj *allocate_hiq_mqd(struct kfd_dev *dev,
+				struct queue_properties *q);
 
 struct kfd_mem_obj *allocate_sdma_mqd(struct kfd_dev *dev,
 					struct queue_properties *q);
-void uninit_mqd_hiq_sdma(struct mqd_manager *mm, void *mqd,
+void free_mqd_hiq_sdma(struct mqd_manager *mm, void *mqd,
 				struct kfd_mem_obj *mqd_mem_obj);
 
 void mqd_symmetrically_map_cu_mask(struct mqd_manager *mm,
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c
index e911438..28876ac 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c
@@ -77,9 +77,6 @@ static struct kfd_mem_obj *allocate_mqd(struct kfd_dev *kfd,
 {
 	struct kfd_mem_obj *mqd_mem_obj;
 
-	if (q->type == KFD_QUEUE_TYPE_HIQ)
-		return allocate_hiq_mqd(kfd);
-
 	if (kfd_gtt_sa_allocate(kfd, sizeof(struct cik_mqd),
 			&mqd_mem_obj))
 		return NULL;
@@ -87,21 +84,15 @@ static struct kfd_mem_obj *allocate_mqd(struct kfd_dev *kfd,
 	return mqd_mem_obj;
 }
 
-static int init_mqd(struct mqd_manager *mm, void **mqd,
-		struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
+static void init_mqd(struct mqd_manager *mm, void **mqd,
+		struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
 		struct queue_properties *q)
 {
 	uint64_t addr;
 	struct cik_mqd *m;
-	int retval;
-	struct kfd_dev *kfd = mm->dev;
-
-	*mqd_mem_obj = allocate_mqd(kfd, q);
-	if (!*mqd_mem_obj)
-		return -ENOMEM;
 
-	m = (struct cik_mqd *) (*mqd_mem_obj)->cpu_ptr;
-	addr = (*mqd_mem_obj)->gpu_addr;
+	m = (struct cik_mqd *) mqd_mem_obj->cpu_ptr;
+	addr = mqd_mem_obj->gpu_addr;
 
 	memset(m, 0, ALIGN(sizeof(struct cik_mqd), 256));
 
@@ -144,37 +135,27 @@ static int init_mqd(struct mqd_manager *mm, void **mqd,
 	*mqd = m;
 	if (gart_addr)
 		*gart_addr = addr;
-	retval = mm->update_mqd(mm, m, q);
-
-	return retval;
+	mm->update_mqd(mm, m, q);
 }
 
-static int init_mqd_sdma(struct mqd_manager *mm, void **mqd,
-			struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
+static void init_mqd_sdma(struct mqd_manager *mm, void **mqd,
+			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
 			struct queue_properties *q)
 {
-	int retval;
 	struct cik_sdma_rlc_registers *m;
-	struct kfd_dev *dev = mm->dev;
 
-	*mqd_mem_obj = allocate_sdma_mqd(dev, q);
-	if (!*mqd_mem_obj)
-		return -ENOMEM;
-
-	m = (struct cik_sdma_rlc_registers *) (*mqd_mem_obj)->cpu_ptr;
+	m = (struct cik_sdma_rlc_registers *) mqd_mem_obj->cpu_ptr;
 
 	memset(m, 0, sizeof(struct cik_sdma_rlc_registers));
 
 	*mqd = m;
 	if (gart_addr)
-		*gart_addr = (*mqd_mem_obj)->gpu_addr;
-
-	retval = mm->update_mqd(mm, m, q);
+		*gart_addr = mqd_mem_obj->gpu_addr;
 
-	return retval;
+	mm->update_mqd(mm, m, q);
 }
 
-static void uninit_mqd(struct mqd_manager *mm, void *mqd,
+static void free_mqd(struct mqd_manager *mm, void *mqd,
 			struct kfd_mem_obj *mqd_mem_obj)
 {
 	kfd_gtt_sa_free(mm->dev, mqd_mem_obj);
@@ -203,7 +184,7 @@ static int load_mqd_sdma(struct mqd_manager *mm, void *mqd,
 					       mms);
 }
 
-static int __update_mqd(struct mqd_manager *mm, void *mqd,
+static void __update_mqd(struct mqd_manager *mm, void *mqd,
 			struct queue_properties *q, unsigned int atc_bit)
 {
 	struct cik_mqd *m;
@@ -237,23 +218,21 @@ static int __update_mqd(struct mqd_manager *mm, void *mqd,
 	set_priority(m, q);
 
 	q->is_active = QUEUE_IS_ACTIVE(*q);
-
-	return 0;
 }
 
-static int update_mqd(struct mqd_manager *mm, void *mqd,
+static void update_mqd(struct mqd_manager *mm, void *mqd,
 			struct queue_properties *q)
 {
-	return __update_mqd(mm, mqd, q, 1);
+	__update_mqd(mm, mqd, q, 1);
 }
 
-static int update_mqd_hawaii(struct mqd_manager *mm, void *mqd,
+static void update_mqd_hawaii(struct mqd_manager *mm, void *mqd,
 			struct queue_properties *q)
 {
-	return __update_mqd(mm, mqd, q, 0);
+	__update_mqd(mm, mqd, q, 0);
 }
 
-static int update_mqd_sdma(struct mqd_manager *mm, void *mqd,
+static void update_mqd_sdma(struct mqd_manager *mm, void *mqd,
 				struct queue_properties *q)
 {
 	struct cik_sdma_rlc_registers *m;
@@ -278,8 +257,6 @@ static int update_mqd_sdma(struct mqd_manager *mm, void *mqd,
 	m->sdma_queue_id = q->sdma_queue_id;
 
 	q->is_active = QUEUE_IS_ACTIVE(*q);
-
-	return 0;
 }
 
 static int destroy_mqd(struct mqd_manager *mm, void *mqd,
@@ -326,14 +303,14 @@ static bool is_occupied_sdma(struct mqd_manager *mm, void *mqd,
  * queues but with different initial values.
  */
 
-static int init_mqd_hiq(struct mqd_manager *mm, void **mqd,
-		struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
+static void init_mqd_hiq(struct mqd_manager *mm, void **mqd,
+		struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
 		struct queue_properties *q)
 {
-	return init_mqd(mm, mqd, mqd_mem_obj, gart_addr, q);
+	init_mqd(mm, mqd, mqd_mem_obj, gart_addr, q);
 }
 
-static int update_mqd_hiq(struct mqd_manager *mm, void *mqd,
+static void update_mqd_hiq(struct mqd_manager *mm, void *mqd,
 				struct queue_properties *q)
 {
 	struct cik_mqd *m;
@@ -360,7 +337,6 @@ static int update_mqd_hiq(struct mqd_manager *mm, void *mqd,
 	q->is_active = QUEUE_IS_ACTIVE(*q);
 
 	set_priority(m, q);
-	return 0;
 }
 
 #if defined(CONFIG_DEBUG_FS)
@@ -399,8 +375,9 @@ struct mqd_manager *mqd_manager_init_cik(enum KFD_MQD_TYPE type,
 	switch (type) {
 	case KFD_MQD_TYPE_CP:
 	case KFD_MQD_TYPE_COMPUTE:
+		mqd->allocate_mqd = allocate_mqd;
 		mqd->init_mqd = init_mqd;
-		mqd->uninit_mqd = uninit_mqd;
+		mqd->free_mqd = free_mqd;
 		mqd->load_mqd = load_mqd;
 		mqd->update_mqd = update_mqd;
 		mqd->destroy_mqd = destroy_mqd;
@@ -411,8 +388,9 @@ struct mqd_manager *mqd_manager_init_cik(enum KFD_MQD_TYPE type,
 #endif
 		break;
 	case KFD_MQD_TYPE_HIQ:
+		mqd->allocate_mqd = allocate_hiq_mqd;
 		mqd->init_mqd = init_mqd_hiq;
-		mqd->uninit_mqd = uninit_mqd_hiq_sdma;
+		mqd->free_mqd = free_mqd_hiq_sdma;
 		mqd->load_mqd = load_mqd;
 		mqd->update_mqd = update_mqd_hiq;
 		mqd->destroy_mqd = destroy_mqd;
@@ -423,8 +401,9 @@ struct mqd_manager *mqd_manager_init_cik(enum KFD_MQD_TYPE type,
 #endif
 		break;
 	case KFD_MQD_TYPE_DIQ:
+		mqd->allocate_mqd = allocate_hiq_mqd;
 		mqd->init_mqd = init_mqd_hiq;
-		mqd->uninit_mqd = uninit_mqd;
+		mqd->free_mqd = free_mqd;
 		mqd->load_mqd = load_mqd;
 		mqd->update_mqd = update_mqd_hiq;
 		mqd->destroy_mqd = destroy_mqd;
@@ -435,8 +414,9 @@ struct mqd_manager *mqd_manager_init_cik(enum KFD_MQD_TYPE type,
 #endif
 		break;
 	case KFD_MQD_TYPE_SDMA:
+		mqd->allocate_mqd = allocate_sdma_mqd;
 		mqd->init_mqd = init_mqd_sdma;
-		mqd->uninit_mqd = uninit_mqd_hiq_sdma;
+		mqd->free_mqd = free_mqd_hiq_sdma;
 		mqd->load_mqd = load_mqd_sdma;
 		mqd->update_mqd = update_mqd_sdma;
 		mqd->destroy_mqd = destroy_mqd_sdma;
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c
index 818944b..0c58f91 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c
@@ -79,9 +79,6 @@ static struct kfd_mem_obj *allocate_mqd(struct kfd_dev *kfd,
 	int retval;
 	struct kfd_mem_obj *mqd_mem_obj = NULL;
 
-	if (q->type == KFD_QUEUE_TYPE_HIQ)
-		return allocate_hiq_mqd(kfd);
-
 	/* From V9,  for CWSR, the control stack is located on the next page
 	 * boundary after the mqd, we will use the gtt allocation function
 	 * instead of sub-allocation function.
@@ -110,21 +107,15 @@ static struct kfd_mem_obj *allocate_mqd(struct kfd_dev *kfd,
 
 }
 
-static int init_mqd(struct mqd_manager *mm, void **mqd,
-			struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
+static void init_mqd(struct mqd_manager *mm, void **mqd,
+			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
 			struct queue_properties *q)
 {
-	int retval;
 	uint64_t addr;
 	struct v9_mqd *m;
-	struct kfd_dev *kfd = mm->dev;
-
-	*mqd_mem_obj = allocate_mqd(kfd, q);
-	if (!*mqd_mem_obj)
-		return -ENOMEM;
 
-	m = (struct v9_mqd *) (*mqd_mem_obj)->cpu_ptr;
-	addr = (*mqd_mem_obj)->gpu_addr;
+	m = (struct v9_mqd *) mqd_mem_obj->cpu_ptr;
+	addr = mqd_mem_obj->gpu_addr;
 
 	memset(m, 0, sizeof(struct v9_mqd));
 
@@ -173,9 +164,7 @@ static int init_mqd(struct mqd_manager *mm, void **mqd,
 	*mqd = m;
 	if (gart_addr)
 		*gart_addr = addr;
-	retval = mm->update_mqd(mm, m, q);
-
-	return retval;
+	mm->update_mqd(mm, m, q);
 }
 
 static int load_mqd(struct mqd_manager *mm, void *mqd,
@@ -190,7 +179,7 @@ static int load_mqd(struct mqd_manager *mm, void *mqd,
 					  wptr_shift, 0, mms);
 }
 
-static int update_mqd(struct mqd_manager *mm, void *mqd,
+static void update_mqd(struct mqd_manager *mm, void *mqd,
 		      struct queue_properties *q)
 {
 	struct v9_mqd *m;
@@ -252,8 +241,6 @@ static int update_mqd(struct mqd_manager *mm, void *mqd,
 	set_priority(m, q);
 
 	q->is_active = QUEUE_IS_ACTIVE(*q);
-
-	return 0;
 }
 
 
@@ -267,7 +254,7 @@ static int destroy_mqd(struct mqd_manager *mm, void *mqd,
 		pipe_id, queue_id);
 }
 
-static void uninit_mqd(struct mqd_manager *mm, void *mqd,
+static void free_mqd(struct mqd_manager *mm, void *mqd,
 			struct kfd_mem_obj *mqd_mem_obj)
 {
 	struct kfd_dev *kfd = mm->dev;
@@ -311,62 +298,47 @@ static int get_wave_state(struct mqd_manager *mm, void *mqd,
 	return 0;
 }
 
-static int init_mqd_hiq(struct mqd_manager *mm, void **mqd,
-			struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
+static void init_mqd_hiq(struct mqd_manager *mm, void **mqd,
+			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
 			struct queue_properties *q)
 {
 	struct v9_mqd *m;
-	int retval = init_mqd(mm, mqd, mqd_mem_obj, gart_addr, q);
 
-	if (retval != 0)
-		return retval;
+	init_mqd(mm, mqd, mqd_mem_obj, gart_addr, q);
 
 	m = get_mqd(*mqd);
 
 	m->cp_hqd_pq_control |= 1 << CP_HQD_PQ_CONTROL__PRIV_STATE__SHIFT |
 			1 << CP_HQD_PQ_CONTROL__KMD_QUEUE__SHIFT;
-
-	return retval;
 }
 
-static int update_mqd_hiq(struct mqd_manager *mm, void *mqd,
+static void update_mqd_hiq(struct mqd_manager *mm, void *mqd,
 			struct queue_properties *q)
 {
 	struct v9_mqd *m;
-	int retval = update_mqd(mm, mqd, q);
 
-	if (retval != 0)
-		return retval;
+	update_mqd(mm, mqd, q);
 
 	/* TODO: what's the point? update_mqd already does this. */
 	m = get_mqd(mqd);
 	m->cp_hqd_vmid = q->vmid;
-	return retval;
 }
 
-static int init_mqd_sdma(struct mqd_manager *mm, void **mqd,
-		struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
+static void init_mqd_sdma(struct mqd_manager *mm, void **mqd,
+		struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
 		struct queue_properties *q)
 {
-	int retval;
 	struct v9_sdma_mqd *m;
-	struct kfd_dev *dev = mm->dev;
-
-	*mqd_mem_obj = allocate_sdma_mqd(dev, q);
-	if (!*mqd_mem_obj)
-		return -ENOMEM;
 
-	m = (struct v9_sdma_mqd *) (*mqd_mem_obj)->cpu_ptr;
+	m = (struct v9_sdma_mqd *) mqd_mem_obj->cpu_ptr;
 
 	memset(m, 0, sizeof(struct v9_sdma_mqd));
 
 	*mqd = m;
 	if (gart_addr)
-		*gart_addr = (*mqd_mem_obj)->gpu_addr;
+		*gart_addr = mqd_mem_obj->gpu_addr;
 
-	retval = mm->update_mqd(mm, m, q);
-
-	return retval;
+	mm->update_mqd(mm, m, q);
 }
 
 static int load_mqd_sdma(struct mqd_manager *mm, void *mqd,
@@ -380,7 +352,7 @@ static int load_mqd_sdma(struct mqd_manager *mm, void *mqd,
 
 #define SDMA_RLC_DUMMY_DEFAULT 0xf
 
-static int update_mqd_sdma(struct mqd_manager *mm, void *mqd,
+static void update_mqd_sdma(struct mqd_manager *mm, void *mqd,
 		struct queue_properties *q)
 {
 	struct v9_sdma_mqd *m;
@@ -404,8 +376,6 @@ static int update_mqd_sdma(struct mqd_manager *mm, void *mqd,
 	m->sdmax_rlcx_dummy_reg = SDMA_RLC_DUMMY_DEFAULT;
 
 	q->is_active = QUEUE_IS_ACTIVE(*q);
-
-	return 0;
 }
 
 /*
@@ -462,8 +432,9 @@ struct mqd_manager *mqd_manager_init_v9(enum KFD_MQD_TYPE type,
 	switch (type) {
 	case KFD_MQD_TYPE_CP:
 	case KFD_MQD_TYPE_COMPUTE:
+		mqd->allocate_mqd = allocate_mqd;
 		mqd->init_mqd = init_mqd;
-		mqd->uninit_mqd = uninit_mqd;
+		mqd->free_mqd = free_mqd;
 		mqd->load_mqd = load_mqd;
 		mqd->update_mqd = update_mqd;
 		mqd->destroy_mqd = destroy_mqd;
@@ -475,8 +446,9 @@ struct mqd_manager *mqd_manager_init_v9(enum KFD_MQD_TYPE type,
 #endif
 		break;
 	case KFD_MQD_TYPE_HIQ:
+		mqd->allocate_mqd = allocate_hiq_mqd;
 		mqd->init_mqd = init_mqd_hiq;
-		mqd->uninit_mqd = uninit_mqd_hiq_sdma;
+		mqd->free_mqd = free_mqd_hiq_sdma;
 		mqd->load_mqd = load_mqd;
 		mqd->update_mqd = update_mqd_hiq;
 		mqd->destroy_mqd = destroy_mqd;
@@ -487,8 +459,9 @@ struct mqd_manager *mqd_manager_init_v9(enum KFD_MQD_TYPE type,
 #endif
 		break;
 	case KFD_MQD_TYPE_DIQ:
+		mqd->allocate_mqd = allocate_hiq_mqd;
 		mqd->init_mqd = init_mqd_hiq;
-		mqd->uninit_mqd = uninit_mqd;
+		mqd->free_mqd = free_mqd;
 		mqd->load_mqd = load_mqd;
 		mqd->update_mqd = update_mqd_hiq;
 		mqd->destroy_mqd = destroy_mqd;
@@ -499,8 +472,9 @@ struct mqd_manager *mqd_manager_init_v9(enum KFD_MQD_TYPE type,
 #endif
 		break;
 	case KFD_MQD_TYPE_SDMA:
+		mqd->allocate_mqd = allocate_sdma_mqd;
 		mqd->init_mqd = init_mqd_sdma;
-		mqd->uninit_mqd = uninit_mqd_hiq_sdma;
+		mqd->free_mqd = free_mqd_hiq_sdma;
 		mqd->load_mqd = load_mqd_sdma;
 		mqd->update_mqd = update_mqd_sdma;
 		mqd->destroy_mqd = destroy_mqd_sdma;
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c
index 00e6a59..7d144f5 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c
@@ -80,9 +80,6 @@ static struct kfd_mem_obj *allocate_mqd(struct kfd_dev *kfd,
 {
 	struct kfd_mem_obj *mqd_mem_obj;
 
-	if (q->type == KFD_QUEUE_TYPE_HIQ)
-		return allocate_hiq_mqd(kfd);
-
 	if (kfd_gtt_sa_allocate(kfd, sizeof(struct vi_mqd),
 			&mqd_mem_obj))
 		return NULL;
@@ -90,21 +87,15 @@ static struct kfd_mem_obj *allocate_mqd(struct kfd_dev *kfd,
 	return mqd_mem_obj;
 }
 
-static int init_mqd(struct mqd_manager *mm, void **mqd,
-			struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
+static void init_mqd(struct mqd_manager *mm, void **mqd,
+			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
 			struct queue_properties *q)
 {
-	int retval;
 	uint64_t addr;
 	struct vi_mqd *m;
-	struct kfd_dev *kfd = mm->dev;
-
-	*mqd_mem_obj = allocate_mqd(kfd, q);
-	if (!*mqd_mem_obj)
-		return -ENOMEM;
 
-	m = (struct vi_mqd *) (*mqd_mem_obj)->cpu_ptr;
-	addr = (*mqd_mem_obj)->gpu_addr;
+	m = (struct vi_mqd *) mqd_mem_obj->cpu_ptr;
+	addr = mqd_mem_obj->gpu_addr;
 
 	memset(m, 0, sizeof(struct vi_mqd));
 
@@ -159,9 +150,7 @@ static int init_mqd(struct mqd_manager *mm, void **mqd,
 	*mqd = m;
 	if (gart_addr)
 		*gart_addr = addr;
-	retval = mm->update_mqd(mm, m, q);
-
-	return retval;
+	mm->update_mqd(mm, m, q);
 }
 
 static int load_mqd(struct mqd_manager *mm, void *mqd,
@@ -177,7 +166,7 @@ static int load_mqd(struct mqd_manager *mm, void *mqd,
 					  wptr_shift, wptr_mask, mms);
 }
 
-static int __update_mqd(struct mqd_manager *mm, void *mqd,
+static void __update_mqd(struct mqd_manager *mm, void *mqd,
 			struct queue_properties *q, unsigned int mtype,
 			unsigned int atc_bit)
 {
@@ -245,21 +234,19 @@ static int __update_mqd(struct mqd_manager *mm, void *mqd,
 	set_priority(m, q);
 
 	q->is_active = QUEUE_IS_ACTIVE(*q);
-
-	return 0;
 }
 
 
-static int update_mqd(struct mqd_manager *mm, void *mqd,
+static void update_mqd(struct mqd_manager *mm, void *mqd,
 			struct queue_properties *q)
 {
-	return __update_mqd(mm, mqd, q, MTYPE_CC, 1);
+	__update_mqd(mm, mqd, q, MTYPE_CC, 1);
 }
 
-static int update_mqd_tonga(struct mqd_manager *mm, void *mqd,
+static void update_mqd_tonga(struct mqd_manager *mm, void *mqd,
 			struct queue_properties *q)
 {
-	return __update_mqd(mm, mqd, q, MTYPE_UC, 0);
+	__update_mqd(mm, mqd, q, MTYPE_UC, 0);
 }
 
 static int destroy_mqd(struct mqd_manager *mm, void *mqd,
@@ -272,7 +259,7 @@ static int destroy_mqd(struct mqd_manager *mm, void *mqd,
 		pipe_id, queue_id);
 }
 
-static void uninit_mqd(struct mqd_manager *mm, void *mqd,
+static void free_mqd(struct mqd_manager *mm, void *mqd,
 			struct kfd_mem_obj *mqd_mem_obj)
 {
 	kfd_gtt_sa_free(mm->dev, mqd_mem_obj);
@@ -309,61 +296,44 @@ static int get_wave_state(struct mqd_manager *mm, void *mqd,
 	return 0;
 }
 
-static int init_mqd_hiq(struct mqd_manager *mm, void **mqd,
-			struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
+static void init_mqd_hiq(struct mqd_manager *mm, void **mqd,
+			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
 			struct queue_properties *q)
 {
 	struct vi_mqd *m;
-	int retval = init_mqd(mm, mqd, mqd_mem_obj, gart_addr, q);
-
-	if (retval != 0)
-		return retval;
+	init_mqd(mm, mqd, mqd_mem_obj, gart_addr, q);
 
 	m = get_mqd(*mqd);
 
 	m->cp_hqd_pq_control |= 1 << CP_HQD_PQ_CONTROL__PRIV_STATE__SHIFT |
 			1 << CP_HQD_PQ_CONTROL__KMD_QUEUE__SHIFT;
-
-	return retval;
 }
 
-static int update_mqd_hiq(struct mqd_manager *mm, void *mqd,
+static void update_mqd_hiq(struct mqd_manager *mm, void *mqd,
 			struct queue_properties *q)
 {
 	struct vi_mqd *m;
-	int retval = __update_mqd(mm, mqd, q, MTYPE_UC, 0);
-
-	if (retval != 0)
-		return retval;
+	__update_mqd(mm, mqd, q, MTYPE_UC, 0);
 
 	m = get_mqd(mqd);
 	m->cp_hqd_vmid = q->vmid;
-	return retval;
 }
 
-static int init_mqd_sdma(struct mqd_manager *mm, void **mqd,
-		struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
+static void init_mqd_sdma(struct mqd_manager *mm, void **mqd,
+		struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
 		struct queue_properties *q)
 {
-	int retval;
 	struct vi_sdma_mqd *m;
-	struct kfd_dev *dev = mm->dev;
-
-	*mqd_mem_obj = allocate_sdma_mqd(dev, q);
-	if (!*mqd_mem_obj)
-		return -ENOMEM;
 
-	m = (struct vi_sdma_mqd *) (*mqd_mem_obj)->cpu_ptr;
+	m = (struct vi_sdma_mqd *) mqd_mem_obj->cpu_ptr;
 
 	memset(m, 0, sizeof(struct vi_sdma_mqd));
 
 	*mqd = m;
 	if (gart_addr)
-		*gart_addr = (*mqd_mem_obj)->gpu_addr;
+		*gart_addr = mqd_mem_obj->gpu_addr;
 
-	retval = mm->update_mqd(mm, m, q);
-
-	return retval;
+	mm->update_mqd(mm, m, q);
 }
 
 static int load_mqd_sdma(struct mqd_manager *mm, void *mqd,
@@ -375,7 +345,7 @@ static int load_mqd_sdma(struct mqd_manager *mm, void *mqd,
 					       mms);
 }
 
-static int update_mqd_sdma(struct mqd_manager *mm, void *mqd,
+static void update_mqd_sdma(struct mqd_manager *mm, void *mqd,
 		struct queue_properties *q)
 {
 	struct vi_sdma_mqd *m;
@@ -400,8 +370,6 @@ static int update_mqd_sdma(struct mqd_manager *mm, void *mqd,
 	m->sdma_queue_id = q->sdma_queue_id;
 
 	q->is_active = QUEUE_IS_ACTIVE(*q);
-
-	return 0;
 }
 
 /*
@@ -458,8 +426,9 @@ struct mqd_manager *mqd_manager_init_vi(enum KFD_MQD_TYPE type,
 	switch (type) {
 	case KFD_MQD_TYPE_CP:
 	case KFD_MQD_TYPE_COMPUTE:
+		mqd->allocate_mqd = allocate_mqd;
 		mqd->init_mqd = init_mqd;
-		mqd->uninit_mqd = uninit_mqd;
+		mqd->free_mqd = free_mqd;
 		mqd->load_mqd = load_mqd;
 		mqd->update_mqd = update_mqd;
 		mqd->destroy_mqd = destroy_mqd;
@@ -471,8 +440,9 @@ struct mqd_manager *mqd_manager_init_vi(enum KFD_MQD_TYPE type,
 #endif
 		break;
 	case KFD_MQD_TYPE_HIQ:
+		mqd->allocate_mqd = allocate_hiq_mqd;
 		mqd->init_mqd = init_mqd_hiq;
-		mqd->uninit_mqd = uninit_mqd_hiq_sdma;
+		mqd->free_mqd = free_mqd_hiq_sdma;
 		mqd->load_mqd = load_mqd;
 		mqd->update_mqd = update_mqd_hiq;
 		mqd->destroy_mqd = destroy_mqd;
@@ -483,8 +453,9 @@ struct mqd_manager *mqd_manager_init_vi(enum KFD_MQD_TYPE type,
 #endif
 		break;
 	case KFD_MQD_TYPE_DIQ:
+		mqd->allocate_mqd = allocate_hiq_mqd;
 		mqd->init_mqd = init_mqd_hiq;
-		mqd->uninit_mqd = uninit_mqd;
+		mqd->free_mqd = free_mqd;
 		mqd->load_mqd = load_mqd;
 		mqd->update_mqd = update_mqd_hiq;
 		mqd->destroy_mqd = destroy_mqd;
@@ -495,8 +466,9 @@ struct mqd_manager *mqd_manager_init_vi(enum KFD_MQD_TYPE type,
 #endif
 		break;
 	case KFD_MQD_TYPE_SDMA:
+		mqd->allocate_mqd = allocate_sdma_mqd;
 		mqd->init_mqd = init_mqd_sdma;
-		mqd->uninit_mqd = uninit_mqd_hiq_sdma;
+		mqd->free_mqd = free_mqd_hiq_sdma;
 		mqd->load_mqd = load_mqd_sdma;
 		mqd->update_mqd = update_mqd_sdma;
 		mqd->destroy_mqd = destroy_mqd_sdma;
-- 
2.7.4

_______________________________________________
amd-gfx mailing list
amd-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/amd-gfx

[PATCH 5/6] drm/amdkfd: Fix a circular lock dependency

[Zeng, Oak]

The idea to break the circular lock dependency is to move allocate_mqd
out of dqm lock protection. See callstack #1 below.

[   59.510149] [drm] Initialized amdgpu 3.30.0 20150101 for 0000:04:00.0 on minor 0

[  513.604034] ======================================================
[  513.604205] WARNING: possible circular locking dependency detected
[  513.604375] 4.18.0-kfd-root #2 Tainted: G        W
[  513.604530] ------------------------------------------------------
[  513.604699] kswapd0/611 is trying to acquire lock:
[  513.604840] 00000000d254022e (&dqm->lock_hidden){+.+.}, at: evict_process_queues_nocpsch+0x26/0x140 [amdgpu]
[  513.605150]
               but task is already holding lock:
[  513.605307] 00000000961547fc (&anon_vma->rwsem){++++}, at: page_lock_anon_vma_read+0xe4/0x250
[  513.605540]
               which lock already depends on the new lock.

[  513.605747]
               the existing dependency chain (in reverse order) is:
[  513.605944]
               -> #4 (&anon_vma->rwsem){++++}:
[  513.606106]        __vma_adjust+0x147/0x7f0
[  513.606231]        __split_vma+0x179/0x190
[  513.606353]        mprotect_fixup+0x217/0x260
[  513.606553]        do_mprotect_pkey+0x211/0x380
[  513.606752]        __x64_sys_mprotect+0x1b/0x20
[  513.606954]        do_syscall_64+0x50/0x1a0
[  513.607149]        entry_SYSCALL_64_after_hwframe+0x49/0xbe
[  513.607380]
               -> #3 (&mapping->i_mmap_rwsem){++++}:
[  513.607678]        rmap_walk_file+0x1f0/0x280
[  513.607887]        page_referenced+0xdd/0x180
[  513.608081]        shrink_page_list+0x853/0xcb0
[  513.608279]        shrink_inactive_list+0x33b/0x700
[  513.608483]        shrink_node_memcg+0x37a/0x7f0
[  513.608682]        shrink_node+0xd8/0x490
[  513.608869]        balance_pgdat+0x18b/0x3b0
[  513.609062]        kswapd+0x203/0x5c0
[  513.609241]        kthread+0x100/0x140
[  513.609420]        ret_from_fork+0x24/0x30
[  513.609607]
               -> #2 (fs_reclaim){+.+.}:
[  513.609883]        kmem_cache_alloc_trace+0x34/0x2e0
[  513.610093]        reservation_object_reserve_shared+0x139/0x300
[  513.610326]        ttm_bo_init_reserved+0x291/0x480 [ttm]
[  513.610567]        amdgpu_bo_do_create+0x1d2/0x650 [amdgpu]
[  513.610811]        amdgpu_bo_create+0x40/0x1f0 [amdgpu]
[  513.611041]        amdgpu_bo_create_reserved+0x249/0x2d0 [amdgpu]
[  513.611290]        amdgpu_bo_create_kernel+0x12/0x70 [amdgpu]
[  513.611584]        amdgpu_ttm_init+0x2cb/0x560 [amdgpu]
[  513.611823]        gmc_v9_0_sw_init+0x400/0x750 [amdgpu]
[  513.612491]        amdgpu_device_init+0x14eb/0x1990 [amdgpu]
[  513.612730]        amdgpu_driver_load_kms+0x78/0x290 [amdgpu]
[  513.612958]        drm_dev_register+0x111/0x1a0
[  513.613171]        amdgpu_pci_probe+0x11c/0x1e0 [amdgpu]
[  513.613389]        local_pci_probe+0x3f/0x90
[  513.613581]        pci_device_probe+0x102/0x1c0
[  513.613779]        driver_probe_device+0x2a7/0x480
[  513.613984]        __driver_attach+0x10a/0x110
[  513.614179]        bus_for_each_dev+0x67/0xc0
[  513.614372]        bus_add_driver+0x1eb/0x260
[  513.614565]        driver_register+0x5b/0xe0
[  513.614756]        do_one_initcall+0xac/0x357
[  513.614952]        do_init_module+0x5b/0x213
[  513.615145]        load_module+0x2542/0x2d30
[  513.615337]        __do_sys_finit_module+0xd2/0x100
[  513.615541]        do_syscall_64+0x50/0x1a0
[  513.615731]        entry_SYSCALL_64_after_hwframe+0x49/0xbe
[  513.615963]
               -> #1 (reservation_ww_class_mutex){+.+.}:
[  513.616293]        amdgpu_amdkfd_alloc_gtt_mem+0xcf/0x2c0 [amdgpu]
[  513.616554]        init_mqd+0x223/0x260 [amdgpu]
[  513.616779]        create_queue_nocpsch+0x4d9/0x600 [amdgpu]
[  513.617031]        pqm_create_queue+0x37c/0x520 [amdgpu]
[  513.617270]        kfd_ioctl_create_queue+0x2f9/0x650 [amdgpu]
[  513.617522]        kfd_ioctl+0x202/0x350 [amdgpu]
[  513.617724]        do_vfs_ioctl+0x9f/0x6c0
[  513.617914]        ksys_ioctl+0x66/0x70
[  513.618095]        __x64_sys_ioctl+0x16/0x20
[  513.618286]        do_syscall_64+0x50/0x1a0
[  513.618476]        entry_SYSCALL_64_after_hwframe+0x49/0xbe
[  513.618695]
               -> #0 (&dqm->lock_hidden){+.+.}:
[  513.618984]        __mutex_lock+0x98/0x970
[  513.619197]        evict_process_queues_nocpsch+0x26/0x140 [amdgpu]
[  513.619459]        kfd_process_evict_queues+0x3b/0xb0 [amdgpu]
[  513.619710]        kgd2kfd_quiesce_mm+0x1c/0x40 [amdgpu]
[  513.620103]        amdgpu_amdkfd_evict_userptr+0x38/0x70 [amdgpu]
[  513.620363]        amdgpu_mn_invalidate_range_start_hsa+0xa6/0xc0 [amdgpu]
[  513.620614]        __mmu_notifier_invalidate_range_start+0x70/0xb0
[  513.620851]        try_to_unmap_one+0x7fc/0x8f0
[  513.621049]        rmap_walk_anon+0x121/0x290
[  513.621242]        try_to_unmap+0x93/0xf0
[  513.621428]        shrink_page_list+0x606/0xcb0
[  513.621625]        shrink_inactive_list+0x33b/0x700
[  513.621835]        shrink_node_memcg+0x37a/0x7f0
[  513.622034]        shrink_node+0xd8/0x490
[  513.622219]        balance_pgdat+0x18b/0x3b0
[  513.622410]        kswapd+0x203/0x5c0
[  513.622589]        kthread+0x100/0x140
[  513.622769]        ret_from_fork+0x24/0x30
[  513.622957]
               other info that might help us debug this:

[  513.623354] Chain exists of:
                 &dqm->lock_hidden --> &mapping->i_mmap_rwsem --> &anon_vma->rwsem

[  513.623900]  Possible unsafe locking scenario:

[  513.624189]        CPU0                    CPU1
[  513.624397]        ----                    ----
[  513.624594]   lock(&anon_vma->rwsem);
[  513.624771]                                lock(&mapping->i_mmap_rwsem);
[  513.625020]                                lock(&anon_vma->rwsem);
[  513.625253]   lock(&dqm->lock_hidden);
[  513.625433]
                *** DEADLOCK ***

[  513.625783] 3 locks held by kswapd0/611:
[  513.625967]  #0: 00000000f14edf84 (fs_reclaim){+.+.}, at: __fs_reclaim_acquire+0x5/0x30
[  513.626309]  #1: 00000000961547fc (&anon_vma->rwsem){++++}, at: page_lock_anon_vma_read+0xe4/0x250
[  513.626671]  #2: 0000000067b5cd12 (srcu){....}, at: __mmu_notifier_invalidate_range_start+0x5/0xb0
[  513.627037]
               stack backtrace:
[  513.627292] CPU: 0 PID: 611 Comm: kswapd0 Tainted: G        W         4.18.0-kfd-root #2
[  513.627632] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006
[  513.627990] Call Trace:
[  513.628143]  dump_stack+0x7c/0xbb
[  513.628315]  print_circular_bug.isra.37+0x21b/0x228
[  513.628581]  __lock_acquire+0xf7d/0x1470
[  513.628782]  ? unwind_next_frame+0x6c/0x4f0
[  513.628974]  ? lock_acquire+0xec/0x1e0
[  513.629154]  lock_acquire+0xec/0x1e0
[  513.629357]  ? evict_process_queues_nocpsch+0x26/0x140 [amdgpu]
[  513.629587]  __mutex_lock+0x98/0x970
[  513.629790]  ? evict_process_queues_nocpsch+0x26/0x140 [amdgpu]
[  513.630047]  ? evict_process_queues_nocpsch+0x26/0x140 [amdgpu]
[  513.630309]  ? evict_process_queues_nocpsch+0x26/0x140 [amdgpu]
[  513.630562]  evict_process_queues_nocpsch+0x26/0x140 [amdgpu]
[  513.630816]  kfd_process_evict_queues+0x3b/0xb0 [amdgpu]
[  513.631057]  kgd2kfd_quiesce_mm+0x1c/0x40 [amdgpu]
[  513.631288]  amdgpu_amdkfd_evict_userptr+0x38/0x70 [amdgpu]
[  513.631536]  amdgpu_mn_invalidate_range_start_hsa+0xa6/0xc0 [amdgpu]
[  513.632076]  __mmu_notifier_invalidate_range_start+0x70/0xb0
[  513.632299]  try_to_unmap_one+0x7fc/0x8f0
[  513.632487]  ? page_lock_anon_vma_read+0x68/0x250
[  513.632690]  rmap_walk_anon+0x121/0x290
[  513.632875]  try_to_unmap+0x93/0xf0
[  513.633050]  ? page_remove_rmap+0x330/0x330
[  513.633239]  ? rcu_read_unlock+0x60/0x60
[  513.633422]  ? page_get_anon_vma+0x160/0x160
[  513.633613]  shrink_page_list+0x606/0xcb0
[  513.633800]  shrink_inactive_list+0x33b/0x700
[  513.633997]  shrink_node_memcg+0x37a/0x7f0
[  513.634186]  ? shrink_node+0xd8/0x490
[  513.634363]  shrink_node+0xd8/0x490
[  513.634537]  balance_pgdat+0x18b/0x3b0
[  513.634718]  kswapd+0x203/0x5c0
[  513.634887]  ? wait_woken+0xb0/0xb0
[  513.635062]  kthread+0x100/0x140
[  513.635231]  ? balance_pgdat+0x3b0/0x3b0
[  513.635414]  ? kthread_delayed_work_timer_fn+0x80/0x80
[  513.635626]  ret_from_fork+0x24/0x30
[  513.636042] Evicting PASID 32768 queues
[  513.936236] Restoring PASID 32768 queues
[  524.708912] Evicting PASID 32768 queues
[  524.999875] Restoring PASID 32768 queues

Change-Id: I334c8c9329be12e468ea7aabc878842ec003bd8e
Signed-off-by: Oak Zeng <Oak.Zeng@amd.com>
---
 drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c | 19 ++++++++++---------
 1 file changed, 10 insertions(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
index 10d4f4f..166636c 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
@@ -274,6 +274,12 @@ static int create_queue_nocpsch(struct device_queue_manager *dqm,
 
 	print_queue(q);
 
+	mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type(
+			q->properties.type)];
+	q->mqd_mem_obj = mqd_mgr->allocate_mqd(mqd_mgr->dev, &q->properties);
+	if (!q->mqd_mem_obj)
+		return -ENOMEM;
+
 	dqm_lock(dqm);
 
 	if (dqm->total_queue_count >= max_num_of_queues_per_device) {
@@ -299,8 +305,6 @@ static int create_queue_nocpsch(struct device_queue_manager *dqm,
 	q->properties.tba_addr = qpd->tba_addr;
 	q->properties.tma_addr = qpd->tma_addr;
 
-	mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type(
-			q->properties.type)];
 	if (q->properties.type == KFD_QUEUE_TYPE_COMPUTE) {
 		retval = allocate_hqd(dqm, q);
 		if (retval)
@@ -319,9 +323,6 @@ static int create_queue_nocpsch(struct device_queue_manager *dqm,
 	if (retval)
 		goto out_deallocate_hqd;
 
-	q->mqd_mem_obj = mqd_mgr->allocate_mqd(mqd_mgr->dev, &q->properties);
-	if (!q->mqd_mem_obj)
-		goto out_deallocate_doorbell;
 	mqd_mgr->init_mqd(mqd_mgr, &q->mqd, q->mqd_mem_obj,
 				&q->gart_mqd_addr, &q->properties);
 	if (q->properties.is_active) {
@@ -333,7 +334,7 @@ static int create_queue_nocpsch(struct device_queue_manager *dqm,
 			retval = mqd_mgr->load_mqd(mqd_mgr, q->mqd, q->pipe,
 					q->queue, &q->properties, current->mm);
 		if (retval)
-			goto out_free_mqd;
+			goto out_deallocate_doorbell;
 	}
 
 	list_add(&q->list, &qpd->queues_list);
@@ -353,10 +354,9 @@ static int create_queue_nocpsch(struct device_queue_manager *dqm,
 	dqm->total_queue_count++;
 	pr_debug("Total of %d queues are accountable so far\n",
 			dqm->total_queue_count);
-	goto out_unlock;
+	dqm_unlock(dqm);
+	return retval;
 
-out_free_mqd:
-	mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
 out_deallocate_doorbell:
 	deallocate_doorbell(qpd, q);
 out_deallocate_hqd:
@@ -370,6 +370,7 @@ static int create_queue_nocpsch(struct device_queue_manager *dqm,
 		deallocate_vmid(dqm, qpd, q);
 out_unlock:
 	dqm_unlock(dqm);
+	mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
 	return retval;
 }
 
-- 
2.7.4

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[PATCH 6/6] drm/amdkfd: Fix sdma queue allocate race condition

[Zeng, Oak]

SDMA queue allocation requires the dqm lock at it modify
the global dqm members. Move up the dqm_lock so sdma
queue allocation is enclosed in the critical section. Move
mqd allocation out of critical section to avoid circular
lock dependency.

Change-Id: I96abd42eae6e77c82a5ba1b8e600af3efe8d791d
Signed-off-by: Oak Zeng <Oak.Zeng@amd.com>
---
 .../gpu/drm/amd/amdkfd/kfd_device_queue_manager.c  | 24 +++++++++++-----------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
index 166636c..cd259b8 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
@@ -1133,23 +1133,27 @@ static int create_queue_cpsch(struct device_queue_manager *dqm, struct queue *q,
 	if (dqm->total_queue_count >= max_num_of_queues_per_device) {
 		pr_warn("Can't create new usermode queue because %d queues were already created\n",
 				dqm->total_queue_count);
-		retval = -EPERM;
-		goto out;
+		return -EPERM;
 	}
 
+	mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type(
+			q->properties.type)];
+	q->mqd_mem_obj = mqd_mgr->allocate_mqd(mqd_mgr->dev, &q->properties);
+	if (!q->mqd_mem_obj)
+		return -ENOMEM;
+
+	dqm_lock(dqm);
 	if (q->properties.type == KFD_QUEUE_TYPE_SDMA ||
 		q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) {
 		retval = allocate_sdma_queue(dqm, q);
 		if (retval)
-			goto out;
+			goto out_unlock;
 	}
 
 	retval = allocate_doorbell(qpd, q);
 	if (retval)
 		goto out_deallocate_sdma_queue;
 
-	mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type(
-			q->properties.type)];
 	/*
 	 * Eviction state logic: mark all queues as evicted, even ones
 	 * not currently active. Restoring inactive queues later only
@@ -1161,12 +1165,8 @@ static int create_queue_cpsch(struct device_queue_manager *dqm, struct queue *q,
 		dqm->asic_ops.init_sdma_vm(dqm, q, qpd);
 	q->properties.tba_addr = qpd->tba_addr;
 	q->properties.tma_addr = qpd->tma_addr;
-	q->mqd_mem_obj = mqd_mgr->allocate_mqd(mqd_mgr->dev, &q->properties);
-	if (!q->mqd_mem_obj)
-		goto out_deallocate_doorbell;
 	mqd_mgr->init_mqd(mqd_mgr, &q->mqd, q->mqd_mem_obj,
 				&q->gart_mqd_addr, &q->properties);
-	dqm_lock(dqm);
 
 	list_add(&q->list, &qpd->queues_list);
 	qpd->queue_count++;
@@ -1192,13 +1192,13 @@ static int create_queue_cpsch(struct device_queue_manager *dqm, struct queue *q,
 	dqm_unlock(dqm);
 	return retval;
 
-out_deallocate_doorbell:
-	deallocate_doorbell(qpd, q);
 out_deallocate_sdma_queue:
 	if (q->properties.type == KFD_QUEUE_TYPE_SDMA ||
 		q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)
 		deallocate_sdma_queue(dqm, q);
-out:
+out_unlock:
+	dqm_unlock(dqm);
+	mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
 	return retval;
 }
 
-- 
2.7.4

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Re: [PATCH 6/6] drm/amdkfd: Fix sdma queue allocate race condition

[Kuehling, Felix]

Patches 5 and 6 are Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>

On 2019-06-06 2:25 p.m., Zeng, Oak wrote:
> SDMA queue allocation requires the dqm lock at it modify
> the global dqm members. Move up the dqm_lock so sdma
> queue allocation is enclosed in the critical section. Move
> mqd allocation out of critical section to avoid circular
> lock dependency.
>
> Change-Id: I96abd42eae6e77c82a5ba1b8e600af3efe8d791d
> Signed-off-by: Oak Zeng <Oak.Zeng@amd.com>
> ---
>   .../gpu/drm/amd/amdkfd/kfd_device_queue_manager.c  | 24 +++++++++++-----------
>   1 file changed, 12 insertions(+), 12 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
> index 166636c..cd259b8 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
> @@ -1133,23 +1133,27 @@ static int create_queue_cpsch(struct device_queue_manager *dqm, struct queue *q,
>   	if (dqm->total_queue_count >= max_num_of_queues_per_device) {
>   		pr_warn("Can't create new usermode queue because %d queues were already created\n",
>   				dqm->total_queue_count);
> -		retval = -EPERM;
> -		goto out;
> +		return -EPERM;
>   	}
>   
> +	mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type(
> +			q->properties.type)];
> +	q->mqd_mem_obj = mqd_mgr->allocate_mqd(mqd_mgr->dev, &q->properties);
> +	if (!q->mqd_mem_obj)
> +		return -ENOMEM;
> +
> +	dqm_lock(dqm);
>   	if (q->properties.type == KFD_QUEUE_TYPE_SDMA ||
>   		q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) {
>   		retval = allocate_sdma_queue(dqm, q);
>   		if (retval)
> -			goto out;
> +			goto out_unlock;
>   	}
>   
>   	retval = allocate_doorbell(qpd, q);
>   	if (retval)
>   		goto out_deallocate_sdma_queue;
>   
> -	mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type(
> -			q->properties.type)];
>   	/*
>   	 * Eviction state logic: mark all queues as evicted, even ones
>   	 * not currently active. Restoring inactive queues later only
> @@ -1161,12 +1165,8 @@ static int create_queue_cpsch(struct device_queue_manager *dqm, struct queue *q,
>   		dqm->asic_ops.init_sdma_vm(dqm, q, qpd);
>   	q->properties.tba_addr = qpd->tba_addr;
>   	q->properties.tma_addr = qpd->tma_addr;
> -	q->mqd_mem_obj = mqd_mgr->allocate_mqd(mqd_mgr->dev, &q->properties);
> -	if (!q->mqd_mem_obj)
> -		goto out_deallocate_doorbell;
>   	mqd_mgr->init_mqd(mqd_mgr, &q->mqd, q->mqd_mem_obj,
>   				&q->gart_mqd_addr, &q->properties);
> -	dqm_lock(dqm);
>   
>   	list_add(&q->list, &qpd->queues_list);
>   	qpd->queue_count++;
> @@ -1192,13 +1192,13 @@ static int create_queue_cpsch(struct device_queue_manager *dqm, struct queue *q,
>   	dqm_unlock(dqm);
>   	return retval;
>   
> -out_deallocate_doorbell:
> -	deallocate_doorbell(qpd, q);
>   out_deallocate_sdma_queue:
>   	if (q->properties.type == KFD_QUEUE_TYPE_SDMA ||
>   		q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)
>   		deallocate_sdma_queue(dqm, q);
> -out:
> +out_unlock:
> +	dqm_unlock(dqm);
> +	mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
>   	return retval;
>   }
>   
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Re: [PATCH 4/6] drm/amdkfd: Separate mqd allocation and initialization

[Kuehling, Felix]

On 2019-06-06 2:25 p.m., Zeng, Oak wrote:
> Introduce a new mqd allocation interface and split the original
> init_mqd function into two functions: allocate_mqd and init_mqd.
> Also renamed uninit_mqd to free_mqd. This is preparation work to
> fix a circular lock dependency.
>
> Change-Id: I26e53ee1abcdd688ad11d35b433da77e3fa1bee7
> Signed-off-by: Oak Zeng <Oak.Zeng@amd.com>
> ---
>   .../gpu/drm/amd/amdkfd/kfd_device_queue_manager.c  | 34 ++++-----
>   drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c      | 16 ++--
>   drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c       |  4 +-
>   drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h       | 18 +++--
>   drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c   | 78 +++++++------------
>   drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c    | 78 +++++++------------
>   drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c    | 88 ++++++++--------------
>   7 files changed, 124 insertions(+), 192 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
> index 3c042eb..10d4f4f 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
> @@ -319,11 +319,11 @@ static int create_queue_nocpsch(struct device_queue_manager *dqm,
>   	if (retval)
>   		goto out_deallocate_hqd;
>   
> -	retval = mqd_mgr->init_mqd(mqd_mgr, &q->mqd, &q->mqd_mem_obj,
> -				&q->gart_mqd_addr, &q->properties);
> -	if (retval)
> +	q->mqd_mem_obj = mqd_mgr->allocate_mqd(mqd_mgr->dev, &q->properties);
> +	if (!q->mqd_mem_obj)
>   		goto out_deallocate_doorbell;

You need to set retval = -ENOMEM here.


> -
> +	mqd_mgr->init_mqd(mqd_mgr, &q->mqd, q->mqd_mem_obj,
> +				&q->gart_mqd_addr, &q->properties);
>   	if (q->properties.is_active) {
>   
>   		if (WARN(q->process->mm != current->mm,
> @@ -333,7 +333,7 @@ static int create_queue_nocpsch(struct device_queue_manager *dqm,
>   			retval = mqd_mgr->load_mqd(mqd_mgr, q->mqd, q->pipe,
>   					q->queue, &q->properties, current->mm);
>   		if (retval)
> -			goto out_uninit_mqd;
> +			goto out_free_mqd;
>   	}
>   
>   	list_add(&q->list, &qpd->queues_list);
> @@ -355,8 +355,8 @@ static int create_queue_nocpsch(struct device_queue_manager *dqm,
>   			dqm->total_queue_count);
>   	goto out_unlock;
>   
> -out_uninit_mqd:
> -	mqd_mgr->uninit_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
> +out_free_mqd:
> +	mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
>   out_deallocate_doorbell:
>   	deallocate_doorbell(qpd, q);
>   out_deallocate_hqd:
> @@ -450,7 +450,7 @@ static int destroy_queue_nocpsch_locked(struct device_queue_manager *dqm,
>   	if (retval == -ETIME)
>   		qpd->reset_wavefronts = true;
>   
> -	mqd_mgr->uninit_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
> +	mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
>   
>   	list_del(&q->list);
>   	if (list_empty(&qpd->queues_list)) {
> @@ -527,7 +527,7 @@ static int update_queue(struct device_queue_manager *dqm, struct queue *q)
>   		}
>   	}
>   
> -	retval = mqd_mgr->update_mqd(mqd_mgr, q->mqd, &q->properties);
> +	mqd_mgr->update_mqd(mqd_mgr, q->mqd, &q->properties);

I think there is a chance now that retval will remain uninitialized in 
this function (in the non-HWS case if a queue is inactive). You should 
initialized it to 0 at the start of the function.

Check the other functions as well. Check for compiler warnings. Most of 
these types of problems should be caught by the compiler.


>   
>   	/*
>   	 * check active state vs. the previous state and modify
> @@ -1160,11 +1160,11 @@ static int create_queue_cpsch(struct device_queue_manager *dqm, struct queue *q,
>   		dqm->asic_ops.init_sdma_vm(dqm, q, qpd);
>   	q->properties.tba_addr = qpd->tba_addr;
>   	q->properties.tma_addr = qpd->tma_addr;
> -	retval = mqd_mgr->init_mqd(mqd_mgr, &q->mqd, &q->mqd_mem_obj,
> -				&q->gart_mqd_addr, &q->properties);
> -	if (retval)
> +	q->mqd_mem_obj = mqd_mgr->allocate_mqd(mqd_mgr->dev, &q->properties);
> +	if (!q->mqd_mem_obj)
>   		goto out_deallocate_doorbell;

retval = -ENOMEM;


> -
> +	mqd_mgr->init_mqd(mqd_mgr, &q->mqd, q->mqd_mem_obj,
> +				&q->gart_mqd_addr, &q->properties);
>   	dqm_lock(dqm);
>   
>   	list_add(&q->list, &qpd->queues_list);
> @@ -1373,8 +1373,8 @@ static int destroy_queue_cpsch(struct device_queue_manager *dqm,
>   
>   	dqm_unlock(dqm);
>   
> -	/* Do uninit_mqd after dqm_unlock(dqm) to avoid circular locking */
> -	mqd_mgr->uninit_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
> +	/* Do free_mqd after dqm_unlock(dqm) to avoid circular locking */
> +	mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
>   
>   	return retval;
>   
> @@ -1615,14 +1615,14 @@ static int process_termination_cpsch(struct device_queue_manager *dqm,
>   		kfd_dec_compute_active(dqm->dev);
>   
>   	/* Lastly, free mqd resources.
> -	 * Do uninit_mqd() after dqm_unlock to avoid circular locking.
> +	 * Do free_mqd() after dqm_unlock to avoid circular locking.
>   	 */
>   	list_for_each_entry_safe(q, next, &qpd->queues_list, list) {
>   		mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type(
>   				q->properties.type)];
>   		list_del(&q->list);
>   		qpd->queue_count--;
> -		mqd_mgr->uninit_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
> +		mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
>   	}
>   
>   	return retval;
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c b/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c
> index 1cc03b3..229500c 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c
> @@ -132,13 +132,14 @@ static bool initialize(struct kernel_queue *kq, struct kfd_dev *dev,
>   	kq->queue->device = dev;
>   	kq->queue->process = kfd_get_process(current);
>   
> -	retval = kq->mqd_mgr->init_mqd(kq->mqd_mgr, &kq->queue->mqd,
> -					&kq->queue->mqd_mem_obj,
> +	kq->queue->mqd_mem_obj = kq->mqd_mgr->allocate_mqd(kq->mqd_mgr->dev,
> +					&kq->queue->properties);
> +	if (!kq->queue->mqd_mem_obj)
> +		goto err_allocate_mqd;

retval = -ENOMEM;

Regards,
   Felix


> +	kq->mqd_mgr->init_mqd(kq->mqd_mgr, &kq->queue->mqd,
> +					kq->queue->mqd_mem_obj,
>   					&kq->queue->gart_mqd_addr,
>   					&kq->queue->properties);
> -	if (retval != 0)
> -		goto err_init_mqd;
> -
>   	/* assign HIQ to HQD */
>   	if (type == KFD_QUEUE_TYPE_HIQ) {
>   		pr_debug("Assigning hiq to hqd\n");
> @@ -164,7 +165,8 @@ static bool initialize(struct kernel_queue *kq, struct kfd_dev *dev,
>   
>   	return true;
>   err_alloc_fence:
> -err_init_mqd:
> +	kq->mqd_mgr->free_mqd(kq->mqd_mgr, kq->queue->mqd, kq->queue->mqd_mem_obj);
> +err_allocate_mqd:
>   	uninit_queue(kq->queue);
>   err_init_queue:
>   	kfd_gtt_sa_free(dev, kq->wptr_mem);
> @@ -193,7 +195,7 @@ static void uninitialize(struct kernel_queue *kq)
>   	else if (kq->queue->properties.type == KFD_QUEUE_TYPE_DIQ)
>   		kfd_gtt_sa_free(kq->dev, kq->fence_mem_obj);
>   
> -	kq->mqd_mgr->uninit_mqd(kq->mqd_mgr, kq->queue->mqd,
> +	kq->mqd_mgr->free_mqd(kq->mqd_mgr, kq->queue->mqd,
>   				kq->queue->mqd_mem_obj);
>   
>   	kfd_gtt_sa_free(kq->dev, kq->rptr_mem);
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c
> index cc04b362..d6cf391 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c
> @@ -45,7 +45,7 @@ int pipe_priority_map[] = {
>   	KFD_PIPE_PRIORITY_CS_HIGH
>   };
>   
> -struct kfd_mem_obj *allocate_hiq_mqd(struct kfd_dev *dev)
> +struct kfd_mem_obj *allocate_hiq_mqd(struct kfd_dev *dev, struct queue_properties *q)
>   {
>   	struct kfd_mem_obj *mqd_mem_obj = NULL;
>   
> @@ -86,7 +86,7 @@ struct kfd_mem_obj *allocate_sdma_mqd(struct kfd_dev *dev,
>   	return mqd_mem_obj;
>   }
>   
> -void uninit_mqd_hiq_sdma(struct mqd_manager *mm, void *mqd,
> +void free_mqd_hiq_sdma(struct mqd_manager *mm, void *mqd,
>   			struct kfd_mem_obj *mqd_mem_obj)
>   {
>   	WARN_ON(!mqd_mem_obj->gtt_mem);
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h
> index 66b8c67..550b61e 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h
> @@ -39,7 +39,7 @@
>    * @destroy_mqd: Destroys the HQD slot and by that preempt the relevant queue.
>    * Used only for no cp scheduling.
>    *
> - * @uninit_mqd: Releases the mqd buffer from local gpu memory.
> + * @free_mqd: Releases the mqd buffer from local gpu memory.
>    *
>    * @is_occupied: Checks if the relevant HQD slot is occupied.
>    *
> @@ -64,8 +64,11 @@
>    */
>   extern int pipe_priority_map[];
>   struct mqd_manager {
> -	int	(*init_mqd)(struct mqd_manager *mm, void **mqd,
> -			struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
> +	struct kfd_mem_obj*	(*allocate_mqd)(struct kfd_dev *kfd,
> +		struct queue_properties *q);
> +
> +	void	(*init_mqd)(struct mqd_manager *mm, void **mqd,
> +			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
>   			struct queue_properties *q);
>   
>   	int	(*load_mqd)(struct mqd_manager *mm, void *mqd,
> @@ -73,7 +76,7 @@ struct mqd_manager {
>   				struct queue_properties *p,
>   				struct mm_struct *mms);
>   
> -	int	(*update_mqd)(struct mqd_manager *mm, void *mqd,
> +	void	(*update_mqd)(struct mqd_manager *mm, void *mqd,
>   				struct queue_properties *q);
>   
>   	int	(*destroy_mqd)(struct mqd_manager *mm, void *mqd,
> @@ -81,7 +84,7 @@ struct mqd_manager {
>   				unsigned int timeout, uint32_t pipe_id,
>   				uint32_t queue_id);
>   
> -	void	(*uninit_mqd)(struct mqd_manager *mm, void *mqd,
> +	void	(*free_mqd)(struct mqd_manager *mm, void *mqd,
>   				struct kfd_mem_obj *mqd_mem_obj);
>   
>   	bool	(*is_occupied)(struct mqd_manager *mm, void *mqd,
> @@ -102,11 +105,12 @@ struct mqd_manager {
>   	uint32_t mqd_size;
>   };
>   
> -struct kfd_mem_obj *allocate_hiq_mqd(struct kfd_dev *dev);
> +struct kfd_mem_obj *allocate_hiq_mqd(struct kfd_dev *dev,
> +				struct queue_properties *q);
>   
>   struct kfd_mem_obj *allocate_sdma_mqd(struct kfd_dev *dev,
>   					struct queue_properties *q);
> -void uninit_mqd_hiq_sdma(struct mqd_manager *mm, void *mqd,
> +void free_mqd_hiq_sdma(struct mqd_manager *mm, void *mqd,
>   				struct kfd_mem_obj *mqd_mem_obj);
>   
>   void mqd_symmetrically_map_cu_mask(struct mqd_manager *mm,
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c
> index e911438..28876ac 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c
> @@ -77,9 +77,6 @@ static struct kfd_mem_obj *allocate_mqd(struct kfd_dev *kfd,
>   {
>   	struct kfd_mem_obj *mqd_mem_obj;
>   
> -	if (q->type == KFD_QUEUE_TYPE_HIQ)
> -		return allocate_hiq_mqd(kfd);
> -
>   	if (kfd_gtt_sa_allocate(kfd, sizeof(struct cik_mqd),
>   			&mqd_mem_obj))
>   		return NULL;
> @@ -87,21 +84,15 @@ static struct kfd_mem_obj *allocate_mqd(struct kfd_dev *kfd,
>   	return mqd_mem_obj;
>   }
>   
> -static int init_mqd(struct mqd_manager *mm, void **mqd,
> -		struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
> +static void init_mqd(struct mqd_manager *mm, void **mqd,
> +		struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
>   		struct queue_properties *q)
>   {
>   	uint64_t addr;
>   	struct cik_mqd *m;
> -	int retval;
> -	struct kfd_dev *kfd = mm->dev;
> -
> -	*mqd_mem_obj = allocate_mqd(kfd, q);
> -	if (!*mqd_mem_obj)
> -		return -ENOMEM;
>   
> -	m = (struct cik_mqd *) (*mqd_mem_obj)->cpu_ptr;
> -	addr = (*mqd_mem_obj)->gpu_addr;
> +	m = (struct cik_mqd *) mqd_mem_obj->cpu_ptr;
> +	addr = mqd_mem_obj->gpu_addr;
>   
>   	memset(m, 0, ALIGN(sizeof(struct cik_mqd), 256));
>   
> @@ -144,37 +135,27 @@ static int init_mqd(struct mqd_manager *mm, void **mqd,
>   	*mqd = m;
>   	if (gart_addr)
>   		*gart_addr = addr;
> -	retval = mm->update_mqd(mm, m, q);
> -
> -	return retval;
> +	mm->update_mqd(mm, m, q);
>   }
>   
> -static int init_mqd_sdma(struct mqd_manager *mm, void **mqd,
> -			struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
> +static void init_mqd_sdma(struct mqd_manager *mm, void **mqd,
> +			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
>   			struct queue_properties *q)
>   {
> -	int retval;
>   	struct cik_sdma_rlc_registers *m;
> -	struct kfd_dev *dev = mm->dev;
>   
> -	*mqd_mem_obj = allocate_sdma_mqd(dev, q);
> -	if (!*mqd_mem_obj)
> -		return -ENOMEM;
> -
> -	m = (struct cik_sdma_rlc_registers *) (*mqd_mem_obj)->cpu_ptr;
> +	m = (struct cik_sdma_rlc_registers *) mqd_mem_obj->cpu_ptr;
>   
>   	memset(m, 0, sizeof(struct cik_sdma_rlc_registers));
>   
>   	*mqd = m;
>   	if (gart_addr)
> -		*gart_addr = (*mqd_mem_obj)->gpu_addr;
> -
> -	retval = mm->update_mqd(mm, m, q);
> +		*gart_addr = mqd_mem_obj->gpu_addr;
>   
> -	return retval;
> +	mm->update_mqd(mm, m, q);
>   }
>   
> -static void uninit_mqd(struct mqd_manager *mm, void *mqd,
> +static void free_mqd(struct mqd_manager *mm, void *mqd,
>   			struct kfd_mem_obj *mqd_mem_obj)
>   {
>   	kfd_gtt_sa_free(mm->dev, mqd_mem_obj);
> @@ -203,7 +184,7 @@ static int load_mqd_sdma(struct mqd_manager *mm, void *mqd,
>   					       mms);
>   }
>   
> -static int __update_mqd(struct mqd_manager *mm, void *mqd,
> +static void __update_mqd(struct mqd_manager *mm, void *mqd,
>   			struct queue_properties *q, unsigned int atc_bit)
>   {
>   	struct cik_mqd *m;
> @@ -237,23 +218,21 @@ static int __update_mqd(struct mqd_manager *mm, void *mqd,
>   	set_priority(m, q);
>   
>   	q->is_active = QUEUE_IS_ACTIVE(*q);
> -
> -	return 0;
>   }
>   
> -static int update_mqd(struct mqd_manager *mm, void *mqd,
> +static void update_mqd(struct mqd_manager *mm, void *mqd,
>   			struct queue_properties *q)
>   {
> -	return __update_mqd(mm, mqd, q, 1);
> +	__update_mqd(mm, mqd, q, 1);
>   }
>   
> -static int update_mqd_hawaii(struct mqd_manager *mm, void *mqd,
> +static void update_mqd_hawaii(struct mqd_manager *mm, void *mqd,
>   			struct queue_properties *q)
>   {
> -	return __update_mqd(mm, mqd, q, 0);
> +	__update_mqd(mm, mqd, q, 0);
>   }
>   
> -static int update_mqd_sdma(struct mqd_manager *mm, void *mqd,
> +static void update_mqd_sdma(struct mqd_manager *mm, void *mqd,
>   				struct queue_properties *q)
>   {
>   	struct cik_sdma_rlc_registers *m;
> @@ -278,8 +257,6 @@ static int update_mqd_sdma(struct mqd_manager *mm, void *mqd,
>   	m->sdma_queue_id = q->sdma_queue_id;
>   
>   	q->is_active = QUEUE_IS_ACTIVE(*q);
> -
> -	return 0;
>   }
>   
>   static int destroy_mqd(struct mqd_manager *mm, void *mqd,
> @@ -326,14 +303,14 @@ static bool is_occupied_sdma(struct mqd_manager *mm, void *mqd,
>    * queues but with different initial values.
>    */
>   
> -static int init_mqd_hiq(struct mqd_manager *mm, void **mqd,
> -		struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
> +static void init_mqd_hiq(struct mqd_manager *mm, void **mqd,
> +		struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
>   		struct queue_properties *q)
>   {
> -	return init_mqd(mm, mqd, mqd_mem_obj, gart_addr, q);
> +	init_mqd(mm, mqd, mqd_mem_obj, gart_addr, q);
>   }
>   
> -static int update_mqd_hiq(struct mqd_manager *mm, void *mqd,
> +static void update_mqd_hiq(struct mqd_manager *mm, void *mqd,
>   				struct queue_properties *q)
>   {
>   	struct cik_mqd *m;
> @@ -360,7 +337,6 @@ static int update_mqd_hiq(struct mqd_manager *mm, void *mqd,
>   	q->is_active = QUEUE_IS_ACTIVE(*q);
>   
>   	set_priority(m, q);
> -	return 0;
>   }
>   
>   #if defined(CONFIG_DEBUG_FS)
> @@ -399,8 +375,9 @@ struct mqd_manager *mqd_manager_init_cik(enum KFD_MQD_TYPE type,
>   	switch (type) {
>   	case KFD_MQD_TYPE_CP:
>   	case KFD_MQD_TYPE_COMPUTE:
> +		mqd->allocate_mqd = allocate_mqd;
>   		mqd->init_mqd = init_mqd;
> -		mqd->uninit_mqd = uninit_mqd;
> +		mqd->free_mqd = free_mqd;
>   		mqd->load_mqd = load_mqd;
>   		mqd->update_mqd = update_mqd;
>   		mqd->destroy_mqd = destroy_mqd;
> @@ -411,8 +388,9 @@ struct mqd_manager *mqd_manager_init_cik(enum KFD_MQD_TYPE type,
>   #endif
>   		break;
>   	case KFD_MQD_TYPE_HIQ:
> +		mqd->allocate_mqd = allocate_hiq_mqd;
>   		mqd->init_mqd = init_mqd_hiq;
> -		mqd->uninit_mqd = uninit_mqd_hiq_sdma;
> +		mqd->free_mqd = free_mqd_hiq_sdma;
>   		mqd->load_mqd = load_mqd;
>   		mqd->update_mqd = update_mqd_hiq;
>   		mqd->destroy_mqd = destroy_mqd;
> @@ -423,8 +401,9 @@ struct mqd_manager *mqd_manager_init_cik(enum KFD_MQD_TYPE type,
>   #endif
>   		break;
>   	case KFD_MQD_TYPE_DIQ:
> +		mqd->allocate_mqd = allocate_hiq_mqd;
>   		mqd->init_mqd = init_mqd_hiq;
> -		mqd->uninit_mqd = uninit_mqd;
> +		mqd->free_mqd = free_mqd;
>   		mqd->load_mqd = load_mqd;
>   		mqd->update_mqd = update_mqd_hiq;
>   		mqd->destroy_mqd = destroy_mqd;
> @@ -435,8 +414,9 @@ struct mqd_manager *mqd_manager_init_cik(enum KFD_MQD_TYPE type,
>   #endif
>   		break;
>   	case KFD_MQD_TYPE_SDMA:
> +		mqd->allocate_mqd = allocate_sdma_mqd;
>   		mqd->init_mqd = init_mqd_sdma;
> -		mqd->uninit_mqd = uninit_mqd_hiq_sdma;
> +		mqd->free_mqd = free_mqd_hiq_sdma;
>   		mqd->load_mqd = load_mqd_sdma;
>   		mqd->update_mqd = update_mqd_sdma;
>   		mqd->destroy_mqd = destroy_mqd_sdma;
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c
> index 818944b..0c58f91 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c
> @@ -79,9 +79,6 @@ static struct kfd_mem_obj *allocate_mqd(struct kfd_dev *kfd,
>   	int retval;
>   	struct kfd_mem_obj *mqd_mem_obj = NULL;
>   
> -	if (q->type == KFD_QUEUE_TYPE_HIQ)
> -		return allocate_hiq_mqd(kfd);
> -
>   	/* From V9,  for CWSR, the control stack is located on the next page
>   	 * boundary after the mqd, we will use the gtt allocation function
>   	 * instead of sub-allocation function.
> @@ -110,21 +107,15 @@ static struct kfd_mem_obj *allocate_mqd(struct kfd_dev *kfd,
>   
>   }
>   
> -static int init_mqd(struct mqd_manager *mm, void **mqd,
> -			struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
> +static void init_mqd(struct mqd_manager *mm, void **mqd,
> +			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
>   			struct queue_properties *q)
>   {
> -	int retval;
>   	uint64_t addr;
>   	struct v9_mqd *m;
> -	struct kfd_dev *kfd = mm->dev;
> -
> -	*mqd_mem_obj = allocate_mqd(kfd, q);
> -	if (!*mqd_mem_obj)
> -		return -ENOMEM;
>   
> -	m = (struct v9_mqd *) (*mqd_mem_obj)->cpu_ptr;
> -	addr = (*mqd_mem_obj)->gpu_addr;
> +	m = (struct v9_mqd *) mqd_mem_obj->cpu_ptr;
> +	addr = mqd_mem_obj->gpu_addr;
>   
>   	memset(m, 0, sizeof(struct v9_mqd));
>   
> @@ -173,9 +164,7 @@ static int init_mqd(struct mqd_manager *mm, void **mqd,
>   	*mqd = m;
>   	if (gart_addr)
>   		*gart_addr = addr;
> -	retval = mm->update_mqd(mm, m, q);
> -
> -	return retval;
> +	mm->update_mqd(mm, m, q);
>   }
>   
>   static int load_mqd(struct mqd_manager *mm, void *mqd,
> @@ -190,7 +179,7 @@ static int load_mqd(struct mqd_manager *mm, void *mqd,
>   					  wptr_shift, 0, mms);
>   }
>   
> -static int update_mqd(struct mqd_manager *mm, void *mqd,
> +static void update_mqd(struct mqd_manager *mm, void *mqd,
>   		      struct queue_properties *q)
>   {
>   	struct v9_mqd *m;
> @@ -252,8 +241,6 @@ static int update_mqd(struct mqd_manager *mm, void *mqd,
>   	set_priority(m, q);
>   
>   	q->is_active = QUEUE_IS_ACTIVE(*q);
> -
> -	return 0;
>   }
>   
>   
> @@ -267,7 +254,7 @@ static int destroy_mqd(struct mqd_manager *mm, void *mqd,
>   		pipe_id, queue_id);
>   }
>   
> -static void uninit_mqd(struct mqd_manager *mm, void *mqd,
> +static void free_mqd(struct mqd_manager *mm, void *mqd,
>   			struct kfd_mem_obj *mqd_mem_obj)
>   {
>   	struct kfd_dev *kfd = mm->dev;
> @@ -311,62 +298,47 @@ static int get_wave_state(struct mqd_manager *mm, void *mqd,
>   	return 0;
>   }
>   
> -static int init_mqd_hiq(struct mqd_manager *mm, void **mqd,
> -			struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
> +static void init_mqd_hiq(struct mqd_manager *mm, void **mqd,
> +			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
>   			struct queue_properties *q)
>   {
>   	struct v9_mqd *m;
> -	int retval = init_mqd(mm, mqd, mqd_mem_obj, gart_addr, q);
>   
> -	if (retval != 0)
> -		return retval;
> +	init_mqd(mm, mqd, mqd_mem_obj, gart_addr, q);
>   
>   	m = get_mqd(*mqd);
>   
>   	m->cp_hqd_pq_control |= 1 << CP_HQD_PQ_CONTROL__PRIV_STATE__SHIFT |
>   			1 << CP_HQD_PQ_CONTROL__KMD_QUEUE__SHIFT;
> -
> -	return retval;
>   }
>   
> -static int update_mqd_hiq(struct mqd_manager *mm, void *mqd,
> +static void update_mqd_hiq(struct mqd_manager *mm, void *mqd,
>   			struct queue_properties *q)
>   {
>   	struct v9_mqd *m;
> -	int retval = update_mqd(mm, mqd, q);
>   
> -	if (retval != 0)
> -		return retval;
> +	update_mqd(mm, mqd, q);
>   
>   	/* TODO: what's the point? update_mqd already does this. */
>   	m = get_mqd(mqd);
>   	m->cp_hqd_vmid = q->vmid;
> -	return retval;
>   }
>   
> -static int init_mqd_sdma(struct mqd_manager *mm, void **mqd,
> -		struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
> +static void init_mqd_sdma(struct mqd_manager *mm, void **mqd,
> +		struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
>   		struct queue_properties *q)
>   {
> -	int retval;
>   	struct v9_sdma_mqd *m;
> -	struct kfd_dev *dev = mm->dev;
> -
> -	*mqd_mem_obj = allocate_sdma_mqd(dev, q);
> -	if (!*mqd_mem_obj)
> -		return -ENOMEM;
>   
> -	m = (struct v9_sdma_mqd *) (*mqd_mem_obj)->cpu_ptr;
> +	m = (struct v9_sdma_mqd *) mqd_mem_obj->cpu_ptr;
>   
>   	memset(m, 0, sizeof(struct v9_sdma_mqd));
>   
>   	*mqd = m;
>   	if (gart_addr)
> -		*gart_addr = (*mqd_mem_obj)->gpu_addr;
> +		*gart_addr = mqd_mem_obj->gpu_addr;
>   
> -	retval = mm->update_mqd(mm, m, q);
> -
> -	return retval;
> +	mm->update_mqd(mm, m, q);
>   }
>   
>   static int load_mqd_sdma(struct mqd_manager *mm, void *mqd,
> @@ -380,7 +352,7 @@ static int load_mqd_sdma(struct mqd_manager *mm, void *mqd,
>   
>   #define SDMA_RLC_DUMMY_DEFAULT 0xf
>   
> -static int update_mqd_sdma(struct mqd_manager *mm, void *mqd,
> +static void update_mqd_sdma(struct mqd_manager *mm, void *mqd,
>   		struct queue_properties *q)
>   {
>   	struct v9_sdma_mqd *m;
> @@ -404,8 +376,6 @@ static int update_mqd_sdma(struct mqd_manager *mm, void *mqd,
>   	m->sdmax_rlcx_dummy_reg = SDMA_RLC_DUMMY_DEFAULT;
>   
>   	q->is_active = QUEUE_IS_ACTIVE(*q);
> -
> -	return 0;
>   }
>   
>   /*
> @@ -462,8 +432,9 @@ struct mqd_manager *mqd_manager_init_v9(enum KFD_MQD_TYPE type,
>   	switch (type) {
>   	case KFD_MQD_TYPE_CP:
>   	case KFD_MQD_TYPE_COMPUTE:
> +		mqd->allocate_mqd = allocate_mqd;
>   		mqd->init_mqd = init_mqd;
> -		mqd->uninit_mqd = uninit_mqd;
> +		mqd->free_mqd = free_mqd;
>   		mqd->load_mqd = load_mqd;
>   		mqd->update_mqd = update_mqd;
>   		mqd->destroy_mqd = destroy_mqd;
> @@ -475,8 +446,9 @@ struct mqd_manager *mqd_manager_init_v9(enum KFD_MQD_TYPE type,
>   #endif
>   		break;
>   	case KFD_MQD_TYPE_HIQ:
> +		mqd->allocate_mqd = allocate_hiq_mqd;
>   		mqd->init_mqd = init_mqd_hiq;
> -		mqd->uninit_mqd = uninit_mqd_hiq_sdma;
> +		mqd->free_mqd = free_mqd_hiq_sdma;
>   		mqd->load_mqd = load_mqd;
>   		mqd->update_mqd = update_mqd_hiq;
>   		mqd->destroy_mqd = destroy_mqd;
> @@ -487,8 +459,9 @@ struct mqd_manager *mqd_manager_init_v9(enum KFD_MQD_TYPE type,
>   #endif
>   		break;
>   	case KFD_MQD_TYPE_DIQ:
> +		mqd->allocate_mqd = allocate_hiq_mqd;
>   		mqd->init_mqd = init_mqd_hiq;
> -		mqd->uninit_mqd = uninit_mqd;
> +		mqd->free_mqd = free_mqd;
>   		mqd->load_mqd = load_mqd;
>   		mqd->update_mqd = update_mqd_hiq;
>   		mqd->destroy_mqd = destroy_mqd;
> @@ -499,8 +472,9 @@ struct mqd_manager *mqd_manager_init_v9(enum KFD_MQD_TYPE type,
>   #endif
>   		break;
>   	case KFD_MQD_TYPE_SDMA:
> +		mqd->allocate_mqd = allocate_sdma_mqd;
>   		mqd->init_mqd = init_mqd_sdma;
> -		mqd->uninit_mqd = uninit_mqd_hiq_sdma;
> +		mqd->free_mqd = free_mqd_hiq_sdma;
>   		mqd->load_mqd = load_mqd_sdma;
>   		mqd->update_mqd = update_mqd_sdma;
>   		mqd->destroy_mqd = destroy_mqd_sdma;
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c
> index 00e6a59..7d144f5 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c
> @@ -80,9 +80,6 @@ static struct kfd_mem_obj *allocate_mqd(struct kfd_dev *kfd,
>   {
>   	struct kfd_mem_obj *mqd_mem_obj;
>   
> -	if (q->type == KFD_QUEUE_TYPE_HIQ)
> -		return allocate_hiq_mqd(kfd);
> -
>   	if (kfd_gtt_sa_allocate(kfd, sizeof(struct vi_mqd),
>   			&mqd_mem_obj))
>   		return NULL;
> @@ -90,21 +87,15 @@ static struct kfd_mem_obj *allocate_mqd(struct kfd_dev *kfd,
>   	return mqd_mem_obj;
>   }
>   
> -static int init_mqd(struct mqd_manager *mm, void **mqd,
> -			struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
> +static void init_mqd(struct mqd_manager *mm, void **mqd,
> +			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
>   			struct queue_properties *q)
>   {
> -	int retval;
>   	uint64_t addr;
>   	struct vi_mqd *m;
> -	struct kfd_dev *kfd = mm->dev;
> -
> -	*mqd_mem_obj = allocate_mqd(kfd, q);
> -	if (!*mqd_mem_obj)
> -		return -ENOMEM;
>   
> -	m = (struct vi_mqd *) (*mqd_mem_obj)->cpu_ptr;
> -	addr = (*mqd_mem_obj)->gpu_addr;
> +	m = (struct vi_mqd *) mqd_mem_obj->cpu_ptr;
> +	addr = mqd_mem_obj->gpu_addr;
>   
>   	memset(m, 0, sizeof(struct vi_mqd));
>   
> @@ -159,9 +150,7 @@ static int init_mqd(struct mqd_manager *mm, void **mqd,
>   	*mqd = m;
>   	if (gart_addr)
>   		*gart_addr = addr;
> -	retval = mm->update_mqd(mm, m, q);
> -
> -	return retval;
> +	mm->update_mqd(mm, m, q);
>   }
>   
>   static int load_mqd(struct mqd_manager *mm, void *mqd,
> @@ -177,7 +166,7 @@ static int load_mqd(struct mqd_manager *mm, void *mqd,
>   					  wptr_shift, wptr_mask, mms);
>   }
>   
> -static int __update_mqd(struct mqd_manager *mm, void *mqd,
> +static void __update_mqd(struct mqd_manager *mm, void *mqd,
>   			struct queue_properties *q, unsigned int mtype,
>   			unsigned int atc_bit)
>   {
> @@ -245,21 +234,19 @@ static int __update_mqd(struct mqd_manager *mm, void *mqd,
>   	set_priority(m, q);
>   
>   	q->is_active = QUEUE_IS_ACTIVE(*q);
> -
> -	return 0;
>   }
>   
>   
> -static int update_mqd(struct mqd_manager *mm, void *mqd,
> +static void update_mqd(struct mqd_manager *mm, void *mqd,
>   			struct queue_properties *q)
>   {
> -	return __update_mqd(mm, mqd, q, MTYPE_CC, 1);
> +	__update_mqd(mm, mqd, q, MTYPE_CC, 1);
>   }
>   
> -static int update_mqd_tonga(struct mqd_manager *mm, void *mqd,
> +static void update_mqd_tonga(struct mqd_manager *mm, void *mqd,
>   			struct queue_properties *q)
>   {
> -	return __update_mqd(mm, mqd, q, MTYPE_UC, 0);
> +	__update_mqd(mm, mqd, q, MTYPE_UC, 0);
>   }
>   
>   static int destroy_mqd(struct mqd_manager *mm, void *mqd,
> @@ -272,7 +259,7 @@ static int destroy_mqd(struct mqd_manager *mm, void *mqd,
>   		pipe_id, queue_id);
>   }
>   
> -static void uninit_mqd(struct mqd_manager *mm, void *mqd,
> +static void free_mqd(struct mqd_manager *mm, void *mqd,
>   			struct kfd_mem_obj *mqd_mem_obj)
>   {
>   	kfd_gtt_sa_free(mm->dev, mqd_mem_obj);
> @@ -309,61 +296,44 @@ static int get_wave_state(struct mqd_manager *mm, void *mqd,
>   	return 0;
>   }
>   
> -static int init_mqd_hiq(struct mqd_manager *mm, void **mqd,
> -			struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
> +static void init_mqd_hiq(struct mqd_manager *mm, void **mqd,
> +			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
>   			struct queue_properties *q)
>   {
>   	struct vi_mqd *m;
> -	int retval = init_mqd(mm, mqd, mqd_mem_obj, gart_addr, q);
> -
> -	if (retval != 0)
> -		return retval;
> +	init_mqd(mm, mqd, mqd_mem_obj, gart_addr, q);
>   
>   	m = get_mqd(*mqd);
>   
>   	m->cp_hqd_pq_control |= 1 << CP_HQD_PQ_CONTROL__PRIV_STATE__SHIFT |
>   			1 << CP_HQD_PQ_CONTROL__KMD_QUEUE__SHIFT;
> -
> -	return retval;
>   }
>   
> -static int update_mqd_hiq(struct mqd_manager *mm, void *mqd,
> +static void update_mqd_hiq(struct mqd_manager *mm, void *mqd,
>   			struct queue_properties *q)
>   {
>   	struct vi_mqd *m;
> -	int retval = __update_mqd(mm, mqd, q, MTYPE_UC, 0);
> -
> -	if (retval != 0)
> -		return retval;
> +	__update_mqd(mm, mqd, q, MTYPE_UC, 0);
>   
>   	m = get_mqd(mqd);
>   	m->cp_hqd_vmid = q->vmid;
> -	return retval;
>   }
>   
> -static int init_mqd_sdma(struct mqd_manager *mm, void **mqd,
> -		struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
> +static void init_mqd_sdma(struct mqd_manager *mm, void **mqd,
> +		struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
>   		struct queue_properties *q)
>   {
> -	int retval;
>   	struct vi_sdma_mqd *m;
> -	struct kfd_dev *dev = mm->dev;
> -
> -	*mqd_mem_obj = allocate_sdma_mqd(dev, q);
> -	if (!*mqd_mem_obj)
> -		return -ENOMEM;
>   
> -	m = (struct vi_sdma_mqd *) (*mqd_mem_obj)->cpu_ptr;
> +	m = (struct vi_sdma_mqd *) mqd_mem_obj->cpu_ptr;
>   
>   	memset(m, 0, sizeof(struct vi_sdma_mqd));
>   
>   	*mqd = m;
>   	if (gart_addr)
> -		*gart_addr = (*mqd_mem_obj)->gpu_addr;
> +		*gart_addr = mqd_mem_obj->gpu_addr;
>   
> -	retval = mm->update_mqd(mm, m, q);
> -
> -	return retval;
> +	mm->update_mqd(mm, m, q);
>   }
>   
>   static int load_mqd_sdma(struct mqd_manager *mm, void *mqd,
> @@ -375,7 +345,7 @@ static int load_mqd_sdma(struct mqd_manager *mm, void *mqd,
>   					       mms);
>   }
>   
> -static int update_mqd_sdma(struct mqd_manager *mm, void *mqd,
> +static void update_mqd_sdma(struct mqd_manager *mm, void *mqd,
>   		struct queue_properties *q)
>   {
>   	struct vi_sdma_mqd *m;
> @@ -400,8 +370,6 @@ static int update_mqd_sdma(struct mqd_manager *mm, void *mqd,
>   	m->sdma_queue_id = q->sdma_queue_id;
>   
>   	q->is_active = QUEUE_IS_ACTIVE(*q);
> -
> -	return 0;
>   }
>   
>   /*
> @@ -458,8 +426,9 @@ struct mqd_manager *mqd_manager_init_vi(enum KFD_MQD_TYPE type,
>   	switch (type) {
>   	case KFD_MQD_TYPE_CP:
>   	case KFD_MQD_TYPE_COMPUTE:
> +		mqd->allocate_mqd = allocate_mqd;
>   		mqd->init_mqd = init_mqd;
> -		mqd->uninit_mqd = uninit_mqd;
> +		mqd->free_mqd = free_mqd;
>   		mqd->load_mqd = load_mqd;
>   		mqd->update_mqd = update_mqd;
>   		mqd->destroy_mqd = destroy_mqd;
> @@ -471,8 +440,9 @@ struct mqd_manager *mqd_manager_init_vi(enum KFD_MQD_TYPE type,
>   #endif
>   		break;
>   	case KFD_MQD_TYPE_HIQ:
> +		mqd->allocate_mqd = allocate_hiq_mqd;
>   		mqd->init_mqd = init_mqd_hiq;
> -		mqd->uninit_mqd = uninit_mqd_hiq_sdma;
> +		mqd->free_mqd = free_mqd_hiq_sdma;
>   		mqd->load_mqd = load_mqd;
>   		mqd->update_mqd = update_mqd_hiq;
>   		mqd->destroy_mqd = destroy_mqd;
> @@ -483,8 +453,9 @@ struct mqd_manager *mqd_manager_init_vi(enum KFD_MQD_TYPE type,
>   #endif
>   		break;
>   	case KFD_MQD_TYPE_DIQ:
> +		mqd->allocate_mqd = allocate_hiq_mqd;
>   		mqd->init_mqd = init_mqd_hiq;
> -		mqd->uninit_mqd = uninit_mqd;
> +		mqd->free_mqd = free_mqd;
>   		mqd->load_mqd = load_mqd;
>   		mqd->update_mqd = update_mqd_hiq;
>   		mqd->destroy_mqd = destroy_mqd;
> @@ -495,8 +466,9 @@ struct mqd_manager *mqd_manager_init_vi(enum KFD_MQD_TYPE type,
>   #endif
>   		break;
>   	case KFD_MQD_TYPE_SDMA:
> +		mqd->allocate_mqd = allocate_sdma_mqd;
>   		mqd->init_mqd = init_mqd_sdma;
> -		mqd->uninit_mqd = uninit_mqd_hiq_sdma;
> +		mqd->free_mqd = free_mqd_hiq_sdma;
>   		mqd->load_mqd = load_mqd_sdma;
>   		mqd->update_mqd = update_mqd_sdma;
>   		mqd->destroy_mqd = destroy_mqd_sdma;
_______________________________________________
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[PATCH 4/6] drm/amdkfd: Separate mqd allocation and initialization

[Zeng, Oak]

Introduce a new mqd allocation interface and split the original
init_mqd function into two functions: allocate_mqd and init_mqd.
Also renamed uninit_mqd to free_mqd. This is preparation work to
fix a circular lock dependency.

Change-Id: I26e53ee1abcdd688ad11d35b433da77e3fa1bee7
Signed-off-by: Oak Zeng <Oak.Zeng@amd.com>
---
 .../gpu/drm/amd/amdkfd/kfd_device_queue_manager.c  | 40 +++++-----
 drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c      | 16 ++--
 drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c       |  4 +-
 drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h       | 18 +++--
 drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c   | 78 +++++++------------
 drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c    | 78 +++++++------------
 drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c    | 88 ++++++++--------------
 7 files changed, 129 insertions(+), 193 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
index 3c042eb..e5b3fb9 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
@@ -319,11 +319,13 @@ static int create_queue_nocpsch(struct device_queue_manager *dqm,
 	if (retval)
 		goto out_deallocate_hqd;
 
-	retval = mqd_mgr->init_mqd(mqd_mgr, &q->mqd, &q->mqd_mem_obj,
-				&q->gart_mqd_addr, &q->properties);
-	if (retval)
+	q->mqd_mem_obj = mqd_mgr->allocate_mqd(mqd_mgr->dev, &q->properties);
+	if (!q->mqd_mem_obj) {
+		retval = -ENOMEM;
 		goto out_deallocate_doorbell;
-
+	}
+	mqd_mgr->init_mqd(mqd_mgr, &q->mqd, q->mqd_mem_obj,
+				&q->gart_mqd_addr, &q->properties);
 	if (q->properties.is_active) {
 
 		if (WARN(q->process->mm != current->mm,
@@ -333,7 +335,7 @@ static int create_queue_nocpsch(struct device_queue_manager *dqm,
 			retval = mqd_mgr->load_mqd(mqd_mgr, q->mqd, q->pipe,
 					q->queue, &q->properties, current->mm);
 		if (retval)
-			goto out_uninit_mqd;
+			goto out_free_mqd;
 	}
 
 	list_add(&q->list, &qpd->queues_list);
@@ -355,8 +357,8 @@ static int create_queue_nocpsch(struct device_queue_manager *dqm,
 			dqm->total_queue_count);
 	goto out_unlock;
 
-out_uninit_mqd:
-	mqd_mgr->uninit_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
+out_free_mqd:
+	mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
 out_deallocate_doorbell:
 	deallocate_doorbell(qpd, q);
 out_deallocate_hqd:
@@ -450,7 +452,7 @@ static int destroy_queue_nocpsch_locked(struct device_queue_manager *dqm,
 	if (retval == -ETIME)
 		qpd->reset_wavefronts = true;
 
-	mqd_mgr->uninit_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
+	mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
 
 	list_del(&q->list);
 	if (list_empty(&qpd->queues_list)) {
@@ -489,7 +491,7 @@ static int destroy_queue_nocpsch(struct device_queue_manager *dqm,
 
 static int update_queue(struct device_queue_manager *dqm, struct queue *q)
 {
-	int retval;
+	int retval = 0;
 	struct mqd_manager *mqd_mgr;
 	struct kfd_process_device *pdd;
 	bool prev_active = false;
@@ -527,7 +529,7 @@ static int update_queue(struct device_queue_manager *dqm, struct queue *q)
 		}
 	}
 
-	retval = mqd_mgr->update_mqd(mqd_mgr, q->mqd, &q->properties);
+	mqd_mgr->update_mqd(mqd_mgr, q->mqd, &q->properties);
 
 	/*
 	 * check active state vs. the previous state and modify
@@ -1160,11 +1162,13 @@ static int create_queue_cpsch(struct device_queue_manager *dqm, struct queue *q,
 		dqm->asic_ops.init_sdma_vm(dqm, q, qpd);
 	q->properties.tba_addr = qpd->tba_addr;
 	q->properties.tma_addr = qpd->tma_addr;
-	retval = mqd_mgr->init_mqd(mqd_mgr, &q->mqd, &q->mqd_mem_obj,
-				&q->gart_mqd_addr, &q->properties);
-	if (retval)
+	q->mqd_mem_obj = mqd_mgr->allocate_mqd(mqd_mgr->dev, &q->properties);
+	if (!q->mqd_mem_obj) {
+		retval = -ENOMEM;
 		goto out_deallocate_doorbell;
-
+	}
+	mqd_mgr->init_mqd(mqd_mgr, &q->mqd, q->mqd_mem_obj,
+				&q->gart_mqd_addr, &q->properties);
 	dqm_lock(dqm);
 
 	list_add(&q->list, &qpd->queues_list);
@@ -1373,8 +1377,8 @@ static int destroy_queue_cpsch(struct device_queue_manager *dqm,
 
 	dqm_unlock(dqm);
 
-	/* Do uninit_mqd after dqm_unlock(dqm) to avoid circular locking */
-	mqd_mgr->uninit_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
+	/* Do free_mqd after dqm_unlock(dqm) to avoid circular locking */
+	mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
 
 	return retval;
 
@@ -1615,14 +1619,14 @@ static int process_termination_cpsch(struct device_queue_manager *dqm,
 		kfd_dec_compute_active(dqm->dev);
 
 	/* Lastly, free mqd resources.
-	 * Do uninit_mqd() after dqm_unlock to avoid circular locking.
+	 * Do free_mqd() after dqm_unlock to avoid circular locking.
 	 */
 	list_for_each_entry_safe(q, next, &qpd->queues_list, list) {
 		mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type(
 				q->properties.type)];
 		list_del(&q->list);
 		qpd->queue_count--;
-		mqd_mgr->uninit_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
+		mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
 	}
 
 	return retval;
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c b/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c
index 1cc03b3..229500c 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c
@@ -132,13 +132,14 @@ static bool initialize(struct kernel_queue *kq, struct kfd_dev *dev,
 	kq->queue->device = dev;
 	kq->queue->process = kfd_get_process(current);
 
-	retval = kq->mqd_mgr->init_mqd(kq->mqd_mgr, &kq->queue->mqd,
-					&kq->queue->mqd_mem_obj,
+	kq->queue->mqd_mem_obj = kq->mqd_mgr->allocate_mqd(kq->mqd_mgr->dev,
+					&kq->queue->properties);
+	if (!kq->queue->mqd_mem_obj)
+		goto err_allocate_mqd;
+	kq->mqd_mgr->init_mqd(kq->mqd_mgr, &kq->queue->mqd,
+					kq->queue->mqd_mem_obj,
 					&kq->queue->gart_mqd_addr,
 					&kq->queue->properties);
-	if (retval != 0)
-		goto err_init_mqd;
-
 	/* assign HIQ to HQD */
 	if (type == KFD_QUEUE_TYPE_HIQ) {
 		pr_debug("Assigning hiq to hqd\n");
@@ -164,7 +165,8 @@ static bool initialize(struct kernel_queue *kq, struct kfd_dev *dev,
 
 	return true;
 err_alloc_fence:
-err_init_mqd:
+	kq->mqd_mgr->free_mqd(kq->mqd_mgr, kq->queue->mqd, kq->queue->mqd_mem_obj);
+err_allocate_mqd:
 	uninit_queue(kq->queue);
 err_init_queue:
 	kfd_gtt_sa_free(dev, kq->wptr_mem);
@@ -193,7 +195,7 @@ static void uninitialize(struct kernel_queue *kq)
 	else if (kq->queue->properties.type == KFD_QUEUE_TYPE_DIQ)
 		kfd_gtt_sa_free(kq->dev, kq->fence_mem_obj);
 
-	kq->mqd_mgr->uninit_mqd(kq->mqd_mgr, kq->queue->mqd,
+	kq->mqd_mgr->free_mqd(kq->mqd_mgr, kq->queue->mqd,
 				kq->queue->mqd_mem_obj);
 
 	kfd_gtt_sa_free(kq->dev, kq->rptr_mem);
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c
index cc04b362..d6cf391 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c
@@ -45,7 +45,7 @@ int pipe_priority_map[] = {
 	KFD_PIPE_PRIORITY_CS_HIGH
 };
 
-struct kfd_mem_obj *allocate_hiq_mqd(struct kfd_dev *dev)
+struct kfd_mem_obj *allocate_hiq_mqd(struct kfd_dev *dev, struct queue_properties *q)
 {
 	struct kfd_mem_obj *mqd_mem_obj = NULL;
 
@@ -86,7 +86,7 @@ struct kfd_mem_obj *allocate_sdma_mqd(struct kfd_dev *dev,
 	return mqd_mem_obj;
 }
 
-void uninit_mqd_hiq_sdma(struct mqd_manager *mm, void *mqd,
+void free_mqd_hiq_sdma(struct mqd_manager *mm, void *mqd,
 			struct kfd_mem_obj *mqd_mem_obj)
 {
 	WARN_ON(!mqd_mem_obj->gtt_mem);
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h
index 66b8c67..550b61e 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h
@@ -39,7 +39,7 @@
  * @destroy_mqd: Destroys the HQD slot and by that preempt the relevant queue.
  * Used only for no cp scheduling.
  *
- * @uninit_mqd: Releases the mqd buffer from local gpu memory.
+ * @free_mqd: Releases the mqd buffer from local gpu memory.
  *
  * @is_occupied: Checks if the relevant HQD slot is occupied.
  *
@@ -64,8 +64,11 @@
  */
 extern int pipe_priority_map[];
 struct mqd_manager {
-	int	(*init_mqd)(struct mqd_manager *mm, void **mqd,
-			struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
+	struct kfd_mem_obj*	(*allocate_mqd)(struct kfd_dev *kfd,
+		struct queue_properties *q);
+
+	void	(*init_mqd)(struct mqd_manager *mm, void **mqd,
+			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
 			struct queue_properties *q);
 
 	int	(*load_mqd)(struct mqd_manager *mm, void *mqd,
@@ -73,7 +76,7 @@ struct mqd_manager {
 				struct queue_properties *p,
 				struct mm_struct *mms);
 
-	int	(*update_mqd)(struct mqd_manager *mm, void *mqd,
+	void	(*update_mqd)(struct mqd_manager *mm, void *mqd,
 				struct queue_properties *q);
 
 	int	(*destroy_mqd)(struct mqd_manager *mm, void *mqd,
@@ -81,7 +84,7 @@ struct mqd_manager {
 				unsigned int timeout, uint32_t pipe_id,
 				uint32_t queue_id);
 
-	void	(*uninit_mqd)(struct mqd_manager *mm, void *mqd,
+	void	(*free_mqd)(struct mqd_manager *mm, void *mqd,
 				struct kfd_mem_obj *mqd_mem_obj);
 
 	bool	(*is_occupied)(struct mqd_manager *mm, void *mqd,
@@ -102,11 +105,12 @@ struct mqd_manager {
 	uint32_t mqd_size;
 };
 
-struct kfd_mem_obj *allocate_hiq_mqd(struct kfd_dev *dev);
+struct kfd_mem_obj *allocate_hiq_mqd(struct kfd_dev *dev,
+				struct queue_properties *q);
 
 struct kfd_mem_obj *allocate_sdma_mqd(struct kfd_dev *dev,
 					struct queue_properties *q);
-void uninit_mqd_hiq_sdma(struct mqd_manager *mm, void *mqd,
+void free_mqd_hiq_sdma(struct mqd_manager *mm, void *mqd,
 				struct kfd_mem_obj *mqd_mem_obj);
 
 void mqd_symmetrically_map_cu_mask(struct mqd_manager *mm,
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c
index e911438..28876ac 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c
@@ -77,9 +77,6 @@ static struct kfd_mem_obj *allocate_mqd(struct kfd_dev *kfd,
 {
 	struct kfd_mem_obj *mqd_mem_obj;
 
-	if (q->type == KFD_QUEUE_TYPE_HIQ)
-		return allocate_hiq_mqd(kfd);
-
 	if (kfd_gtt_sa_allocate(kfd, sizeof(struct cik_mqd),
 			&mqd_mem_obj))
 		return NULL;
@@ -87,21 +84,15 @@ static struct kfd_mem_obj *allocate_mqd(struct kfd_dev *kfd,
 	return mqd_mem_obj;
 }
 
-static int init_mqd(struct mqd_manager *mm, void **mqd,
-		struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
+static void init_mqd(struct mqd_manager *mm, void **mqd,
+		struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
 		struct queue_properties *q)
 {
 	uint64_t addr;
 	struct cik_mqd *m;
-	int retval;
-	struct kfd_dev *kfd = mm->dev;
-
-	*mqd_mem_obj = allocate_mqd(kfd, q);
-	if (!*mqd_mem_obj)
-		return -ENOMEM;
 
-	m = (struct cik_mqd *) (*mqd_mem_obj)->cpu_ptr;
-	addr = (*mqd_mem_obj)->gpu_addr;
+	m = (struct cik_mqd *) mqd_mem_obj->cpu_ptr;
+	addr = mqd_mem_obj->gpu_addr;
 
 	memset(m, 0, ALIGN(sizeof(struct cik_mqd), 256));
 
@@ -144,37 +135,27 @@ static int init_mqd(struct mqd_manager *mm, void **mqd,
 	*mqd = m;
 	if (gart_addr)
 		*gart_addr = addr;
-	retval = mm->update_mqd(mm, m, q);
-
-	return retval;
+	mm->update_mqd(mm, m, q);
 }
 
-static int init_mqd_sdma(struct mqd_manager *mm, void **mqd,
-			struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
+static void init_mqd_sdma(struct mqd_manager *mm, void **mqd,
+			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
 			struct queue_properties *q)
 {
-	int retval;
 	struct cik_sdma_rlc_registers *m;
-	struct kfd_dev *dev = mm->dev;
 
-	*mqd_mem_obj = allocate_sdma_mqd(dev, q);
-	if (!*mqd_mem_obj)
-		return -ENOMEM;
-
-	m = (struct cik_sdma_rlc_registers *) (*mqd_mem_obj)->cpu_ptr;
+	m = (struct cik_sdma_rlc_registers *) mqd_mem_obj->cpu_ptr;
 
 	memset(m, 0, sizeof(struct cik_sdma_rlc_registers));
 
 	*mqd = m;
 	if (gart_addr)
-		*gart_addr = (*mqd_mem_obj)->gpu_addr;
-
-	retval = mm->update_mqd(mm, m, q);
+		*gart_addr = mqd_mem_obj->gpu_addr;
 
-	return retval;
+	mm->update_mqd(mm, m, q);
 }
 
-static void uninit_mqd(struct mqd_manager *mm, void *mqd,
+static void free_mqd(struct mqd_manager *mm, void *mqd,
 			struct kfd_mem_obj *mqd_mem_obj)
 {
 	kfd_gtt_sa_free(mm->dev, mqd_mem_obj);
@@ -203,7 +184,7 @@ static int load_mqd_sdma(struct mqd_manager *mm, void *mqd,
 					       mms);
 }
 
-static int __update_mqd(struct mqd_manager *mm, void *mqd,
+static void __update_mqd(struct mqd_manager *mm, void *mqd,
 			struct queue_properties *q, unsigned int atc_bit)
 {
 	struct cik_mqd *m;
@@ -237,23 +218,21 @@ static int __update_mqd(struct mqd_manager *mm, void *mqd,
 	set_priority(m, q);
 
 	q->is_active = QUEUE_IS_ACTIVE(*q);
-
-	return 0;
 }
 
-static int update_mqd(struct mqd_manager *mm, void *mqd,
+static void update_mqd(struct mqd_manager *mm, void *mqd,
 			struct queue_properties *q)
 {
-	return __update_mqd(mm, mqd, q, 1);
+	__update_mqd(mm, mqd, q, 1);
 }
 
-static int update_mqd_hawaii(struct mqd_manager *mm, void *mqd,
+static void update_mqd_hawaii(struct mqd_manager *mm, void *mqd,
 			struct queue_properties *q)
 {
-	return __update_mqd(mm, mqd, q, 0);
+	__update_mqd(mm, mqd, q, 0);
 }
 
-static int update_mqd_sdma(struct mqd_manager *mm, void *mqd,
+static void update_mqd_sdma(struct mqd_manager *mm, void *mqd,
 				struct queue_properties *q)
 {
 	struct cik_sdma_rlc_registers *m;
@@ -278,8 +257,6 @@ static int update_mqd_sdma(struct mqd_manager *mm, void *mqd,
 	m->sdma_queue_id = q->sdma_queue_id;
 
 	q->is_active = QUEUE_IS_ACTIVE(*q);
-
-	return 0;
 }
 
 static int destroy_mqd(struct mqd_manager *mm, void *mqd,
@@ -326,14 +303,14 @@ static bool is_occupied_sdma(struct mqd_manager *mm, void *mqd,
  * queues but with different initial values.
  */
 
-static int init_mqd_hiq(struct mqd_manager *mm, void **mqd,
-		struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
+static void init_mqd_hiq(struct mqd_manager *mm, void **mqd,
+		struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
 		struct queue_properties *q)
 {
-	return init_mqd(mm, mqd, mqd_mem_obj, gart_addr, q);
+	init_mqd(mm, mqd, mqd_mem_obj, gart_addr, q);
 }
 
-static int update_mqd_hiq(struct mqd_manager *mm, void *mqd,
+static void update_mqd_hiq(struct mqd_manager *mm, void *mqd,
 				struct queue_properties *q)
 {
 	struct cik_mqd *m;
@@ -360,7 +337,6 @@ static int update_mqd_hiq(struct mqd_manager *mm, void *mqd,
 	q->is_active = QUEUE_IS_ACTIVE(*q);
 
 	set_priority(m, q);
-	return 0;
 }
 
 #if defined(CONFIG_DEBUG_FS)
@@ -399,8 +375,9 @@ struct mqd_manager *mqd_manager_init_cik(enum KFD_MQD_TYPE type,
 	switch (type) {
 	case KFD_MQD_TYPE_CP:
 	case KFD_MQD_TYPE_COMPUTE:
+		mqd->allocate_mqd = allocate_mqd;
 		mqd->init_mqd = init_mqd;
-		mqd->uninit_mqd = uninit_mqd;
+		mqd->free_mqd = free_mqd;
 		mqd->load_mqd = load_mqd;
 		mqd->update_mqd = update_mqd;
 		mqd->destroy_mqd = destroy_mqd;
@@ -411,8 +388,9 @@ struct mqd_manager *mqd_manager_init_cik(enum KFD_MQD_TYPE type,
 #endif
 		break;
 	case KFD_MQD_TYPE_HIQ:
+		mqd->allocate_mqd = allocate_hiq_mqd;
 		mqd->init_mqd = init_mqd_hiq;
-		mqd->uninit_mqd = uninit_mqd_hiq_sdma;
+		mqd->free_mqd = free_mqd_hiq_sdma;
 		mqd->load_mqd = load_mqd;
 		mqd->update_mqd = update_mqd_hiq;
 		mqd->destroy_mqd = destroy_mqd;
@@ -423,8 +401,9 @@ struct mqd_manager *mqd_manager_init_cik(enum KFD_MQD_TYPE type,
 #endif
 		break;
 	case KFD_MQD_TYPE_DIQ:
+		mqd->allocate_mqd = allocate_hiq_mqd;
 		mqd->init_mqd = init_mqd_hiq;
-		mqd->uninit_mqd = uninit_mqd;
+		mqd->free_mqd = free_mqd;
 		mqd->load_mqd = load_mqd;
 		mqd->update_mqd = update_mqd_hiq;
 		mqd->destroy_mqd = destroy_mqd;
@@ -435,8 +414,9 @@ struct mqd_manager *mqd_manager_init_cik(enum KFD_MQD_TYPE type,
 #endif
 		break;
 	case KFD_MQD_TYPE_SDMA:
+		mqd->allocate_mqd = allocate_sdma_mqd;
 		mqd->init_mqd = init_mqd_sdma;
-		mqd->uninit_mqd = uninit_mqd_hiq_sdma;
+		mqd->free_mqd = free_mqd_hiq_sdma;
 		mqd->load_mqd = load_mqd_sdma;
 		mqd->update_mqd = update_mqd_sdma;
 		mqd->destroy_mqd = destroy_mqd_sdma;
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c
index 818944b..0c58f91 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c
@@ -79,9 +79,6 @@ static struct kfd_mem_obj *allocate_mqd(struct kfd_dev *kfd,
 	int retval;
 	struct kfd_mem_obj *mqd_mem_obj = NULL;
 
-	if (q->type == KFD_QUEUE_TYPE_HIQ)
-		return allocate_hiq_mqd(kfd);
-
 	/* From V9,  for CWSR, the control stack is located on the next page
 	 * boundary after the mqd, we will use the gtt allocation function
 	 * instead of sub-allocation function.
@@ -110,21 +107,15 @@ static struct kfd_mem_obj *allocate_mqd(struct kfd_dev *kfd,
 
 }
 
-static int init_mqd(struct mqd_manager *mm, void **mqd,
-			struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
+static void init_mqd(struct mqd_manager *mm, void **mqd,
+			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
 			struct queue_properties *q)
 {
-	int retval;
 	uint64_t addr;
 	struct v9_mqd *m;
-	struct kfd_dev *kfd = mm->dev;
-
-	*mqd_mem_obj = allocate_mqd(kfd, q);
-	if (!*mqd_mem_obj)
-		return -ENOMEM;
 
-	m = (struct v9_mqd *) (*mqd_mem_obj)->cpu_ptr;
-	addr = (*mqd_mem_obj)->gpu_addr;
+	m = (struct v9_mqd *) mqd_mem_obj->cpu_ptr;
+	addr = mqd_mem_obj->gpu_addr;
 
 	memset(m, 0, sizeof(struct v9_mqd));
 
@@ -173,9 +164,7 @@ static int init_mqd(struct mqd_manager *mm, void **mqd,
 	*mqd = m;
 	if (gart_addr)
 		*gart_addr = addr;
-	retval = mm->update_mqd(mm, m, q);
-
-	return retval;
+	mm->update_mqd(mm, m, q);
 }
 
 static int load_mqd(struct mqd_manager *mm, void *mqd,
@@ -190,7 +179,7 @@ static int load_mqd(struct mqd_manager *mm, void *mqd,
 					  wptr_shift, 0, mms);
 }
 
-static int update_mqd(struct mqd_manager *mm, void *mqd,
+static void update_mqd(struct mqd_manager *mm, void *mqd,
 		      struct queue_properties *q)
 {
 	struct v9_mqd *m;
@@ -252,8 +241,6 @@ static int update_mqd(struct mqd_manager *mm, void *mqd,
 	set_priority(m, q);
 
 	q->is_active = QUEUE_IS_ACTIVE(*q);
-
-	return 0;
 }
 
 
@@ -267,7 +254,7 @@ static int destroy_mqd(struct mqd_manager *mm, void *mqd,
 		pipe_id, queue_id);
 }
 
-static void uninit_mqd(struct mqd_manager *mm, void *mqd,
+static void free_mqd(struct mqd_manager *mm, void *mqd,
 			struct kfd_mem_obj *mqd_mem_obj)
 {
 	struct kfd_dev *kfd = mm->dev;
@@ -311,62 +298,47 @@ static int get_wave_state(struct mqd_manager *mm, void *mqd,
 	return 0;
 }
 
-static int init_mqd_hiq(struct mqd_manager *mm, void **mqd,
-			struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
+static void init_mqd_hiq(struct mqd_manager *mm, void **mqd,
+			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
 			struct queue_properties *q)
 {
 	struct v9_mqd *m;
-	int retval = init_mqd(mm, mqd, mqd_mem_obj, gart_addr, q);
 
-	if (retval != 0)
-		return retval;
+	init_mqd(mm, mqd, mqd_mem_obj, gart_addr, q);
 
 	m = get_mqd(*mqd);
 
 	m->cp_hqd_pq_control |= 1 << CP_HQD_PQ_CONTROL__PRIV_STATE__SHIFT |
 			1 << CP_HQD_PQ_CONTROL__KMD_QUEUE__SHIFT;
-
-	return retval;
 }
 
-static int update_mqd_hiq(struct mqd_manager *mm, void *mqd,
+static void update_mqd_hiq(struct mqd_manager *mm, void *mqd,
 			struct queue_properties *q)
 {
 	struct v9_mqd *m;
-	int retval = update_mqd(mm, mqd, q);
 
-	if (retval != 0)
-		return retval;
+	update_mqd(mm, mqd, q);
 
 	/* TODO: what's the point? update_mqd already does this. */
 	m = get_mqd(mqd);
 	m->cp_hqd_vmid = q->vmid;
-	return retval;
 }
 
-static int init_mqd_sdma(struct mqd_manager *mm, void **mqd,
-		struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
+static void init_mqd_sdma(struct mqd_manager *mm, void **mqd,
+		struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
 		struct queue_properties *q)
 {
-	int retval;
 	struct v9_sdma_mqd *m;
-	struct kfd_dev *dev = mm->dev;
-
-	*mqd_mem_obj = allocate_sdma_mqd(dev, q);
-	if (!*mqd_mem_obj)
-		return -ENOMEM;
 
-	m = (struct v9_sdma_mqd *) (*mqd_mem_obj)->cpu_ptr;
+	m = (struct v9_sdma_mqd *) mqd_mem_obj->cpu_ptr;
 
 	memset(m, 0, sizeof(struct v9_sdma_mqd));
 
 	*mqd = m;
 	if (gart_addr)
-		*gart_addr = (*mqd_mem_obj)->gpu_addr;
+		*gart_addr = mqd_mem_obj->gpu_addr;
 
-	retval = mm->update_mqd(mm, m, q);
-
-	return retval;
+	mm->update_mqd(mm, m, q);
 }
 
 static int load_mqd_sdma(struct mqd_manager *mm, void *mqd,
@@ -380,7 +352,7 @@ static int load_mqd_sdma(struct mqd_manager *mm, void *mqd,
 
 #define SDMA_RLC_DUMMY_DEFAULT 0xf
 
-static int update_mqd_sdma(struct mqd_manager *mm, void *mqd,
+static void update_mqd_sdma(struct mqd_manager *mm, void *mqd,
 		struct queue_properties *q)
 {
 	struct v9_sdma_mqd *m;
@@ -404,8 +376,6 @@ static int update_mqd_sdma(struct mqd_manager *mm, void *mqd,
 	m->sdmax_rlcx_dummy_reg = SDMA_RLC_DUMMY_DEFAULT;
 
 	q->is_active = QUEUE_IS_ACTIVE(*q);
-
-	return 0;
 }
 
 /*
@@ -462,8 +432,9 @@ struct mqd_manager *mqd_manager_init_v9(enum KFD_MQD_TYPE type,
 	switch (type) {
 	case KFD_MQD_TYPE_CP:
 	case KFD_MQD_TYPE_COMPUTE:
+		mqd->allocate_mqd = allocate_mqd;
 		mqd->init_mqd = init_mqd;
-		mqd->uninit_mqd = uninit_mqd;
+		mqd->free_mqd = free_mqd;
 		mqd->load_mqd = load_mqd;
 		mqd->update_mqd = update_mqd;
 		mqd->destroy_mqd = destroy_mqd;
@@ -475,8 +446,9 @@ struct mqd_manager *mqd_manager_init_v9(enum KFD_MQD_TYPE type,
 #endif
 		break;
 	case KFD_MQD_TYPE_HIQ:
+		mqd->allocate_mqd = allocate_hiq_mqd;
 		mqd->init_mqd = init_mqd_hiq;
-		mqd->uninit_mqd = uninit_mqd_hiq_sdma;
+		mqd->free_mqd = free_mqd_hiq_sdma;
 		mqd->load_mqd = load_mqd;
 		mqd->update_mqd = update_mqd_hiq;
 		mqd->destroy_mqd = destroy_mqd;
@@ -487,8 +459,9 @@ struct mqd_manager *mqd_manager_init_v9(enum KFD_MQD_TYPE type,
 #endif
 		break;
 	case KFD_MQD_TYPE_DIQ:
+		mqd->allocate_mqd = allocate_hiq_mqd;
 		mqd->init_mqd = init_mqd_hiq;
-		mqd->uninit_mqd = uninit_mqd;
+		mqd->free_mqd = free_mqd;
 		mqd->load_mqd = load_mqd;
 		mqd->update_mqd = update_mqd_hiq;
 		mqd->destroy_mqd = destroy_mqd;
@@ -499,8 +472,9 @@ struct mqd_manager *mqd_manager_init_v9(enum KFD_MQD_TYPE type,
 #endif
 		break;
 	case KFD_MQD_TYPE_SDMA:
+		mqd->allocate_mqd = allocate_sdma_mqd;
 		mqd->init_mqd = init_mqd_sdma;
-		mqd->uninit_mqd = uninit_mqd_hiq_sdma;
+		mqd->free_mqd = free_mqd_hiq_sdma;
 		mqd->load_mqd = load_mqd_sdma;
 		mqd->update_mqd = update_mqd_sdma;
 		mqd->destroy_mqd = destroy_mqd_sdma;
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c
index 00e6a59..7d144f5 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c
@@ -80,9 +80,6 @@ static struct kfd_mem_obj *allocate_mqd(struct kfd_dev *kfd,
 {
 	struct kfd_mem_obj *mqd_mem_obj;
 
-	if (q->type == KFD_QUEUE_TYPE_HIQ)
-		return allocate_hiq_mqd(kfd);
-
 	if (kfd_gtt_sa_allocate(kfd, sizeof(struct vi_mqd),
 			&mqd_mem_obj))
 		return NULL;
@@ -90,21 +87,15 @@ static struct kfd_mem_obj *allocate_mqd(struct kfd_dev *kfd,
 	return mqd_mem_obj;
 }
 
-static int init_mqd(struct mqd_manager *mm, void **mqd,
-			struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
+static void init_mqd(struct mqd_manager *mm, void **mqd,
+			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
 			struct queue_properties *q)
 {
-	int retval;
 	uint64_t addr;
 	struct vi_mqd *m;
-	struct kfd_dev *kfd = mm->dev;
-
-	*mqd_mem_obj = allocate_mqd(kfd, q);
-	if (!*mqd_mem_obj)
-		return -ENOMEM;
 
-	m = (struct vi_mqd *) (*mqd_mem_obj)->cpu_ptr;
-	addr = (*mqd_mem_obj)->gpu_addr;
+	m = (struct vi_mqd *) mqd_mem_obj->cpu_ptr;
+	addr = mqd_mem_obj->gpu_addr;
 
 	memset(m, 0, sizeof(struct vi_mqd));
 
@@ -159,9 +150,7 @@ static int init_mqd(struct mqd_manager *mm, void **mqd,
 	*mqd = m;
 	if (gart_addr)
 		*gart_addr = addr;
-	retval = mm->update_mqd(mm, m, q);
-
-	return retval;
+	mm->update_mqd(mm, m, q);
 }
 
 static int load_mqd(struct mqd_manager *mm, void *mqd,
@@ -177,7 +166,7 @@ static int load_mqd(struct mqd_manager *mm, void *mqd,
 					  wptr_shift, wptr_mask, mms);
 }
 
-static int __update_mqd(struct mqd_manager *mm, void *mqd,
+static void __update_mqd(struct mqd_manager *mm, void *mqd,
 			struct queue_properties *q, unsigned int mtype,
 			unsigned int atc_bit)
 {
@@ -245,21 +234,19 @@ static int __update_mqd(struct mqd_manager *mm, void *mqd,
 	set_priority(m, q);
 
 	q->is_active = QUEUE_IS_ACTIVE(*q);
-
-	return 0;
 }
 
 
-static int update_mqd(struct mqd_manager *mm, void *mqd,
+static void update_mqd(struct mqd_manager *mm, void *mqd,
 			struct queue_properties *q)
 {
-	return __update_mqd(mm, mqd, q, MTYPE_CC, 1);
+	__update_mqd(mm, mqd, q, MTYPE_CC, 1);
 }
 
-static int update_mqd_tonga(struct mqd_manager *mm, void *mqd,
+static void update_mqd_tonga(struct mqd_manager *mm, void *mqd,
 			struct queue_properties *q)
 {
-	return __update_mqd(mm, mqd, q, MTYPE_UC, 0);
+	__update_mqd(mm, mqd, q, MTYPE_UC, 0);
 }
 
 static int destroy_mqd(struct mqd_manager *mm, void *mqd,
@@ -272,7 +259,7 @@ static int destroy_mqd(struct mqd_manager *mm, void *mqd,
 		pipe_id, queue_id);
 }
 
-static void uninit_mqd(struct mqd_manager *mm, void *mqd,
+static void free_mqd(struct mqd_manager *mm, void *mqd,
 			struct kfd_mem_obj *mqd_mem_obj)
 {
 	kfd_gtt_sa_free(mm->dev, mqd_mem_obj);
@@ -309,61 +296,44 @@ static int get_wave_state(struct mqd_manager *mm, void *mqd,
 	return 0;
 }
 
-static int init_mqd_hiq(struct mqd_manager *mm, void **mqd,
-			struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
+static void init_mqd_hiq(struct mqd_manager *mm, void **mqd,
+			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
 			struct queue_properties *q)
 {
 	struct vi_mqd *m;
-	int retval = init_mqd(mm, mqd, mqd_mem_obj, gart_addr, q);
-
-	if (retval != 0)
-		return retval;
+	init_mqd(mm, mqd, mqd_mem_obj, gart_addr, q);
 
 	m = get_mqd(*mqd);
 
 	m->cp_hqd_pq_control |= 1 << CP_HQD_PQ_CONTROL__PRIV_STATE__SHIFT |
 			1 << CP_HQD_PQ_CONTROL__KMD_QUEUE__SHIFT;
-
-	return retval;
 }
 
-static int update_mqd_hiq(struct mqd_manager *mm, void *mqd,
+static void update_mqd_hiq(struct mqd_manager *mm, void *mqd,
 			struct queue_properties *q)
 {
 	struct vi_mqd *m;
-	int retval = __update_mqd(mm, mqd, q, MTYPE_UC, 0);
-
-	if (retval != 0)
-		return retval;
+	__update_mqd(mm, mqd, q, MTYPE_UC, 0);
 
 	m = get_mqd(mqd);
 	m->cp_hqd_vmid = q->vmid;
-	return retval;
 }
 
-static int init_mqd_sdma(struct mqd_manager *mm, void **mqd,
-		struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
+static void init_mqd_sdma(struct mqd_manager *mm, void **mqd,
+		struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
 		struct queue_properties *q)
 {
-	int retval;
 	struct vi_sdma_mqd *m;
-	struct kfd_dev *dev = mm->dev;
-
-	*mqd_mem_obj = allocate_sdma_mqd(dev, q);
-	if (!*mqd_mem_obj)
-		return -ENOMEM;
 
-	m = (struct vi_sdma_mqd *) (*mqd_mem_obj)->cpu_ptr;
+	m = (struct vi_sdma_mqd *) mqd_mem_obj->cpu_ptr;
 
 	memset(m, 0, sizeof(struct vi_sdma_mqd));
 
 	*mqd = m;
 	if (gart_addr)
-		*gart_addr = (*mqd_mem_obj)->gpu_addr;
+		*gart_addr = mqd_mem_obj->gpu_addr;
 
-	retval = mm->update_mqd(mm, m, q);
-
-	return retval;
+	mm->update_mqd(mm, m, q);
 }
 
 static int load_mqd_sdma(struct mqd_manager *mm, void *mqd,
@@ -375,7 +345,7 @@ static int load_mqd_sdma(struct mqd_manager *mm, void *mqd,
 					       mms);
 }
 
-static int update_mqd_sdma(struct mqd_manager *mm, void *mqd,
+static void update_mqd_sdma(struct mqd_manager *mm, void *mqd,
 		struct queue_properties *q)
 {
 	struct vi_sdma_mqd *m;
@@ -400,8 +370,6 @@ static int update_mqd_sdma(struct mqd_manager *mm, void *mqd,
 	m->sdma_queue_id = q->sdma_queue_id;
 
 	q->is_active = QUEUE_IS_ACTIVE(*q);
-
-	return 0;
 }
 
 /*
@@ -458,8 +426,9 @@ struct mqd_manager *mqd_manager_init_vi(enum KFD_MQD_TYPE type,
 	switch (type) {
 	case KFD_MQD_TYPE_CP:
 	case KFD_MQD_TYPE_COMPUTE:
+		mqd->allocate_mqd = allocate_mqd;
 		mqd->init_mqd = init_mqd;
-		mqd->uninit_mqd = uninit_mqd;
+		mqd->free_mqd = free_mqd;
 		mqd->load_mqd = load_mqd;
 		mqd->update_mqd = update_mqd;
 		mqd->destroy_mqd = destroy_mqd;
@@ -471,8 +440,9 @@ struct mqd_manager *mqd_manager_init_vi(enum KFD_MQD_TYPE type,
 #endif
 		break;
 	case KFD_MQD_TYPE_HIQ:
+		mqd->allocate_mqd = allocate_hiq_mqd;
 		mqd->init_mqd = init_mqd_hiq;
-		mqd->uninit_mqd = uninit_mqd_hiq_sdma;
+		mqd->free_mqd = free_mqd_hiq_sdma;
 		mqd->load_mqd = load_mqd;
 		mqd->update_mqd = update_mqd_hiq;
 		mqd->destroy_mqd = destroy_mqd;
@@ -483,8 +453,9 @@ struct mqd_manager *mqd_manager_init_vi(enum KFD_MQD_TYPE type,
 #endif
 		break;
 	case KFD_MQD_TYPE_DIQ:
+		mqd->allocate_mqd = allocate_hiq_mqd;
 		mqd->init_mqd = init_mqd_hiq;
-		mqd->uninit_mqd = uninit_mqd;
+		mqd->free_mqd = free_mqd;
 		mqd->load_mqd = load_mqd;
 		mqd->update_mqd = update_mqd_hiq;
 		mqd->destroy_mqd = destroy_mqd;
@@ -495,8 +466,9 @@ struct mqd_manager *mqd_manager_init_vi(enum KFD_MQD_TYPE type,
 #endif
 		break;
 	case KFD_MQD_TYPE_SDMA:
+		mqd->allocate_mqd = allocate_sdma_mqd;
 		mqd->init_mqd = init_mqd_sdma;
-		mqd->uninit_mqd = uninit_mqd_hiq_sdma;
+		mqd->free_mqd = free_mqd_hiq_sdma;
 		mqd->load_mqd = load_mqd_sdma;
 		mqd->update_mqd = update_mqd_sdma;
 		mqd->destroy_mqd = destroy_mqd_sdma;
-- 
2.7.4

_______________________________________________
amd-gfx mailing list
amd-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/amd-gfx

Re: [PATCH 4/6] drm/amdkfd: Separate mqd allocation and initialization

[Kuehling, Felix]

On 2019-06-06 5:40 p.m., Zeng, Oak wrote:
> Introduce a new mqd allocation interface and split the original
> init_mqd function into two functions: allocate_mqd and init_mqd.
> Also renamed uninit_mqd to free_mqd. This is preparation work to
> fix a circular lock dependency.
>
> Change-Id: I26e53ee1abcdd688ad11d35b433da77e3fa1bee7
> Signed-off-by: Oak Zeng <Oak.Zeng@amd.com>

Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>


> ---
>   .../gpu/drm/amd/amdkfd/kfd_device_queue_manager.c  | 40 +++++-----
>   drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c      | 16 ++--
>   drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c       |  4 +-
>   drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h       | 18 +++--
>   drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c   | 78 +++++++------------
>   drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c    | 78 +++++++------------
>   drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c    | 88 ++++++++--------------
>   7 files changed, 129 insertions(+), 193 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
> index 3c042eb..e5b3fb9 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
> @@ -319,11 +319,13 @@ static int create_queue_nocpsch(struct device_queue_manager *dqm,
>   	if (retval)
>   		goto out_deallocate_hqd;
>   
> -	retval = mqd_mgr->init_mqd(mqd_mgr, &q->mqd, &q->mqd_mem_obj,
> -				&q->gart_mqd_addr, &q->properties);
> -	if (retval)
> +	q->mqd_mem_obj = mqd_mgr->allocate_mqd(mqd_mgr->dev, &q->properties);
> +	if (!q->mqd_mem_obj) {
> +		retval = -ENOMEM;
>   		goto out_deallocate_doorbell;
> -
> +	}
> +	mqd_mgr->init_mqd(mqd_mgr, &q->mqd, q->mqd_mem_obj,
> +				&q->gart_mqd_addr, &q->properties);
>   	if (q->properties.is_active) {
>   
>   		if (WARN(q->process->mm != current->mm,
> @@ -333,7 +335,7 @@ static int create_queue_nocpsch(struct device_queue_manager *dqm,
>   			retval = mqd_mgr->load_mqd(mqd_mgr, q->mqd, q->pipe,
>   					q->queue, &q->properties, current->mm);
>   		if (retval)
> -			goto out_uninit_mqd;
> +			goto out_free_mqd;
>   	}
>   
>   	list_add(&q->list, &qpd->queues_list);
> @@ -355,8 +357,8 @@ static int create_queue_nocpsch(struct device_queue_manager *dqm,
>   			dqm->total_queue_count);
>   	goto out_unlock;
>   
> -out_uninit_mqd:
> -	mqd_mgr->uninit_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
> +out_free_mqd:
> +	mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
>   out_deallocate_doorbell:
>   	deallocate_doorbell(qpd, q);
>   out_deallocate_hqd:
> @@ -450,7 +452,7 @@ static int destroy_queue_nocpsch_locked(struct device_queue_manager *dqm,
>   	if (retval == -ETIME)
>   		qpd->reset_wavefronts = true;
>   
> -	mqd_mgr->uninit_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
> +	mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
>   
>   	list_del(&q->list);
>   	if (list_empty(&qpd->queues_list)) {
> @@ -489,7 +491,7 @@ static int destroy_queue_nocpsch(struct device_queue_manager *dqm,
>   
>   static int update_queue(struct device_queue_manager *dqm, struct queue *q)
>   {
> -	int retval;
> +	int retval = 0;
>   	struct mqd_manager *mqd_mgr;
>   	struct kfd_process_device *pdd;
>   	bool prev_active = false;
> @@ -527,7 +529,7 @@ static int update_queue(struct device_queue_manager *dqm, struct queue *q)
>   		}
>   	}
>   
> -	retval = mqd_mgr->update_mqd(mqd_mgr, q->mqd, &q->properties);
> +	mqd_mgr->update_mqd(mqd_mgr, q->mqd, &q->properties);
>   
>   	/*
>   	 * check active state vs. the previous state and modify
> @@ -1160,11 +1162,13 @@ static int create_queue_cpsch(struct device_queue_manager *dqm, struct queue *q,
>   		dqm->asic_ops.init_sdma_vm(dqm, q, qpd);
>   	q->properties.tba_addr = qpd->tba_addr;
>   	q->properties.tma_addr = qpd->tma_addr;
> -	retval = mqd_mgr->init_mqd(mqd_mgr, &q->mqd, &q->mqd_mem_obj,
> -				&q->gart_mqd_addr, &q->properties);
> -	if (retval)
> +	q->mqd_mem_obj = mqd_mgr->allocate_mqd(mqd_mgr->dev, &q->properties);
> +	if (!q->mqd_mem_obj) {
> +		retval = -ENOMEM;
>   		goto out_deallocate_doorbell;
> -
> +	}
> +	mqd_mgr->init_mqd(mqd_mgr, &q->mqd, q->mqd_mem_obj,
> +				&q->gart_mqd_addr, &q->properties);
>   	dqm_lock(dqm);
>   
>   	list_add(&q->list, &qpd->queues_list);
> @@ -1373,8 +1377,8 @@ static int destroy_queue_cpsch(struct device_queue_manager *dqm,
>   
>   	dqm_unlock(dqm);
>   
> -	/* Do uninit_mqd after dqm_unlock(dqm) to avoid circular locking */
> -	mqd_mgr->uninit_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
> +	/* Do free_mqd after dqm_unlock(dqm) to avoid circular locking */
> +	mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
>   
>   	return retval;
>   
> @@ -1615,14 +1619,14 @@ static int process_termination_cpsch(struct device_queue_manager *dqm,
>   		kfd_dec_compute_active(dqm->dev);
>   
>   	/* Lastly, free mqd resources.
> -	 * Do uninit_mqd() after dqm_unlock to avoid circular locking.
> +	 * Do free_mqd() after dqm_unlock to avoid circular locking.
>   	 */
>   	list_for_each_entry_safe(q, next, &qpd->queues_list, list) {
>   		mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type(
>   				q->properties.type)];
>   		list_del(&q->list);
>   		qpd->queue_count--;
> -		mqd_mgr->uninit_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
> +		mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
>   	}
>   
>   	return retval;
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c b/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c
> index 1cc03b3..229500c 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c
> @@ -132,13 +132,14 @@ static bool initialize(struct kernel_queue *kq, struct kfd_dev *dev,
>   	kq->queue->device = dev;
>   	kq->queue->process = kfd_get_process(current);
>   
> -	retval = kq->mqd_mgr->init_mqd(kq->mqd_mgr, &kq->queue->mqd,
> -					&kq->queue->mqd_mem_obj,
> +	kq->queue->mqd_mem_obj = kq->mqd_mgr->allocate_mqd(kq->mqd_mgr->dev,
> +					&kq->queue->properties);
> +	if (!kq->queue->mqd_mem_obj)
> +		goto err_allocate_mqd;
> +	kq->mqd_mgr->init_mqd(kq->mqd_mgr, &kq->queue->mqd,
> +					kq->queue->mqd_mem_obj,
>   					&kq->queue->gart_mqd_addr,
>   					&kq->queue->properties);
> -	if (retval != 0)
> -		goto err_init_mqd;
> -
>   	/* assign HIQ to HQD */
>   	if (type == KFD_QUEUE_TYPE_HIQ) {
>   		pr_debug("Assigning hiq to hqd\n");
> @@ -164,7 +165,8 @@ static bool initialize(struct kernel_queue *kq, struct kfd_dev *dev,
>   
>   	return true;
>   err_alloc_fence:
> -err_init_mqd:
> +	kq->mqd_mgr->free_mqd(kq->mqd_mgr, kq->queue->mqd, kq->queue->mqd_mem_obj);
> +err_allocate_mqd:
>   	uninit_queue(kq->queue);
>   err_init_queue:
>   	kfd_gtt_sa_free(dev, kq->wptr_mem);
> @@ -193,7 +195,7 @@ static void uninitialize(struct kernel_queue *kq)
>   	else if (kq->queue->properties.type == KFD_QUEUE_TYPE_DIQ)
>   		kfd_gtt_sa_free(kq->dev, kq->fence_mem_obj);
>   
> -	kq->mqd_mgr->uninit_mqd(kq->mqd_mgr, kq->queue->mqd,
> +	kq->mqd_mgr->free_mqd(kq->mqd_mgr, kq->queue->mqd,
>   				kq->queue->mqd_mem_obj);
>   
>   	kfd_gtt_sa_free(kq->dev, kq->rptr_mem);
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c
> index cc04b362..d6cf391 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c
> @@ -45,7 +45,7 @@ int pipe_priority_map[] = {
>   	KFD_PIPE_PRIORITY_CS_HIGH
>   };
>   
> -struct kfd_mem_obj *allocate_hiq_mqd(struct kfd_dev *dev)
> +struct kfd_mem_obj *allocate_hiq_mqd(struct kfd_dev *dev, struct queue_properties *q)
>   {
>   	struct kfd_mem_obj *mqd_mem_obj = NULL;
>   
> @@ -86,7 +86,7 @@ struct kfd_mem_obj *allocate_sdma_mqd(struct kfd_dev *dev,
>   	return mqd_mem_obj;
>   }
>   
> -void uninit_mqd_hiq_sdma(struct mqd_manager *mm, void *mqd,
> +void free_mqd_hiq_sdma(struct mqd_manager *mm, void *mqd,
>   			struct kfd_mem_obj *mqd_mem_obj)
>   {
>   	WARN_ON(!mqd_mem_obj->gtt_mem);
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h
> index 66b8c67..550b61e 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h
> @@ -39,7 +39,7 @@
>    * @destroy_mqd: Destroys the HQD slot and by that preempt the relevant queue.
>    * Used only for no cp scheduling.
>    *
> - * @uninit_mqd: Releases the mqd buffer from local gpu memory.
> + * @free_mqd: Releases the mqd buffer from local gpu memory.
>    *
>    * @is_occupied: Checks if the relevant HQD slot is occupied.
>    *
> @@ -64,8 +64,11 @@
>    */
>   extern int pipe_priority_map[];
>   struct mqd_manager {
> -	int	(*init_mqd)(struct mqd_manager *mm, void **mqd,
> -			struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
> +	struct kfd_mem_obj*	(*allocate_mqd)(struct kfd_dev *kfd,
> +		struct queue_properties *q);
> +
> +	void	(*init_mqd)(struct mqd_manager *mm, void **mqd,
> +			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
>   			struct queue_properties *q);
>   
>   	int	(*load_mqd)(struct mqd_manager *mm, void *mqd,
> @@ -73,7 +76,7 @@ struct mqd_manager {
>   				struct queue_properties *p,
>   				struct mm_struct *mms);
>   
> -	int	(*update_mqd)(struct mqd_manager *mm, void *mqd,
> +	void	(*update_mqd)(struct mqd_manager *mm, void *mqd,
>   				struct queue_properties *q);
>   
>   	int	(*destroy_mqd)(struct mqd_manager *mm, void *mqd,
> @@ -81,7 +84,7 @@ struct mqd_manager {
>   				unsigned int timeout, uint32_t pipe_id,
>   				uint32_t queue_id);
>   
> -	void	(*uninit_mqd)(struct mqd_manager *mm, void *mqd,
> +	void	(*free_mqd)(struct mqd_manager *mm, void *mqd,
>   				struct kfd_mem_obj *mqd_mem_obj);
>   
>   	bool	(*is_occupied)(struct mqd_manager *mm, void *mqd,
> @@ -102,11 +105,12 @@ struct mqd_manager {
>   	uint32_t mqd_size;
>   };
>   
> -struct kfd_mem_obj *allocate_hiq_mqd(struct kfd_dev *dev);
> +struct kfd_mem_obj *allocate_hiq_mqd(struct kfd_dev *dev,
> +				struct queue_properties *q);
>   
>   struct kfd_mem_obj *allocate_sdma_mqd(struct kfd_dev *dev,
>   					struct queue_properties *q);
> -void uninit_mqd_hiq_sdma(struct mqd_manager *mm, void *mqd,
> +void free_mqd_hiq_sdma(struct mqd_manager *mm, void *mqd,
>   				struct kfd_mem_obj *mqd_mem_obj);
>   
>   void mqd_symmetrically_map_cu_mask(struct mqd_manager *mm,
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c
> index e911438..28876ac 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c
> @@ -77,9 +77,6 @@ static struct kfd_mem_obj *allocate_mqd(struct kfd_dev *kfd,
>   {
>   	struct kfd_mem_obj *mqd_mem_obj;
>   
> -	if (q->type == KFD_QUEUE_TYPE_HIQ)
> -		return allocate_hiq_mqd(kfd);
> -
>   	if (kfd_gtt_sa_allocate(kfd, sizeof(struct cik_mqd),
>   			&mqd_mem_obj))
>   		return NULL;
> @@ -87,21 +84,15 @@ static struct kfd_mem_obj *allocate_mqd(struct kfd_dev *kfd,
>   	return mqd_mem_obj;
>   }
>   
> -static int init_mqd(struct mqd_manager *mm, void **mqd,
> -		struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
> +static void init_mqd(struct mqd_manager *mm, void **mqd,
> +		struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
>   		struct queue_properties *q)
>   {
>   	uint64_t addr;
>   	struct cik_mqd *m;
> -	int retval;
> -	struct kfd_dev *kfd = mm->dev;
> -
> -	*mqd_mem_obj = allocate_mqd(kfd, q);
> -	if (!*mqd_mem_obj)
> -		return -ENOMEM;
>   
> -	m = (struct cik_mqd *) (*mqd_mem_obj)->cpu_ptr;
> -	addr = (*mqd_mem_obj)->gpu_addr;
> +	m = (struct cik_mqd *) mqd_mem_obj->cpu_ptr;
> +	addr = mqd_mem_obj->gpu_addr;
>   
>   	memset(m, 0, ALIGN(sizeof(struct cik_mqd), 256));
>   
> @@ -144,37 +135,27 @@ static int init_mqd(struct mqd_manager *mm, void **mqd,
>   	*mqd = m;
>   	if (gart_addr)
>   		*gart_addr = addr;
> -	retval = mm->update_mqd(mm, m, q);
> -
> -	return retval;
> +	mm->update_mqd(mm, m, q);
>   }
>   
> -static int init_mqd_sdma(struct mqd_manager *mm, void **mqd,
> -			struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
> +static void init_mqd_sdma(struct mqd_manager *mm, void **mqd,
> +			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
>   			struct queue_properties *q)
>   {
> -	int retval;
>   	struct cik_sdma_rlc_registers *m;
> -	struct kfd_dev *dev = mm->dev;
>   
> -	*mqd_mem_obj = allocate_sdma_mqd(dev, q);
> -	if (!*mqd_mem_obj)
> -		return -ENOMEM;
> -
> -	m = (struct cik_sdma_rlc_registers *) (*mqd_mem_obj)->cpu_ptr;
> +	m = (struct cik_sdma_rlc_registers *) mqd_mem_obj->cpu_ptr;
>   
>   	memset(m, 0, sizeof(struct cik_sdma_rlc_registers));
>   
>   	*mqd = m;
>   	if (gart_addr)
> -		*gart_addr = (*mqd_mem_obj)->gpu_addr;
> -
> -	retval = mm->update_mqd(mm, m, q);
> +		*gart_addr = mqd_mem_obj->gpu_addr;
>   
> -	return retval;
> +	mm->update_mqd(mm, m, q);
>   }
>   
> -static void uninit_mqd(struct mqd_manager *mm, void *mqd,
> +static void free_mqd(struct mqd_manager *mm, void *mqd,
>   			struct kfd_mem_obj *mqd_mem_obj)
>   {
>   	kfd_gtt_sa_free(mm->dev, mqd_mem_obj);
> @@ -203,7 +184,7 @@ static int load_mqd_sdma(struct mqd_manager *mm, void *mqd,
>   					       mms);
>   }
>   
> -static int __update_mqd(struct mqd_manager *mm, void *mqd,
> +static void __update_mqd(struct mqd_manager *mm, void *mqd,
>   			struct queue_properties *q, unsigned int atc_bit)
>   {
>   	struct cik_mqd *m;
> @@ -237,23 +218,21 @@ static int __update_mqd(struct mqd_manager *mm, void *mqd,
>   	set_priority(m, q);
>   
>   	q->is_active = QUEUE_IS_ACTIVE(*q);
> -
> -	return 0;
>   }
>   
> -static int update_mqd(struct mqd_manager *mm, void *mqd,
> +static void update_mqd(struct mqd_manager *mm, void *mqd,
>   			struct queue_properties *q)
>   {
> -	return __update_mqd(mm, mqd, q, 1);
> +	__update_mqd(mm, mqd, q, 1);
>   }
>   
> -static int update_mqd_hawaii(struct mqd_manager *mm, void *mqd,
> +static void update_mqd_hawaii(struct mqd_manager *mm, void *mqd,
>   			struct queue_properties *q)
>   {
> -	return __update_mqd(mm, mqd, q, 0);
> +	__update_mqd(mm, mqd, q, 0);
>   }
>   
> -static int update_mqd_sdma(struct mqd_manager *mm, void *mqd,
> +static void update_mqd_sdma(struct mqd_manager *mm, void *mqd,
>   				struct queue_properties *q)
>   {
>   	struct cik_sdma_rlc_registers *m;
> @@ -278,8 +257,6 @@ static int update_mqd_sdma(struct mqd_manager *mm, void *mqd,
>   	m->sdma_queue_id = q->sdma_queue_id;
>   
>   	q->is_active = QUEUE_IS_ACTIVE(*q);
> -
> -	return 0;
>   }
>   
>   static int destroy_mqd(struct mqd_manager *mm, void *mqd,
> @@ -326,14 +303,14 @@ static bool is_occupied_sdma(struct mqd_manager *mm, void *mqd,
>    * queues but with different initial values.
>    */
>   
> -static int init_mqd_hiq(struct mqd_manager *mm, void **mqd,
> -		struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
> +static void init_mqd_hiq(struct mqd_manager *mm, void **mqd,
> +		struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
>   		struct queue_properties *q)
>   {
> -	return init_mqd(mm, mqd, mqd_mem_obj, gart_addr, q);
> +	init_mqd(mm, mqd, mqd_mem_obj, gart_addr, q);
>   }
>   
> -static int update_mqd_hiq(struct mqd_manager *mm, void *mqd,
> +static void update_mqd_hiq(struct mqd_manager *mm, void *mqd,
>   				struct queue_properties *q)
>   {
>   	struct cik_mqd *m;
> @@ -360,7 +337,6 @@ static int update_mqd_hiq(struct mqd_manager *mm, void *mqd,
>   	q->is_active = QUEUE_IS_ACTIVE(*q);
>   
>   	set_priority(m, q);
> -	return 0;
>   }
>   
>   #if defined(CONFIG_DEBUG_FS)
> @@ -399,8 +375,9 @@ struct mqd_manager *mqd_manager_init_cik(enum KFD_MQD_TYPE type,
>   	switch (type) {
>   	case KFD_MQD_TYPE_CP:
>   	case KFD_MQD_TYPE_COMPUTE:
> +		mqd->allocate_mqd = allocate_mqd;
>   		mqd->init_mqd = init_mqd;
> -		mqd->uninit_mqd = uninit_mqd;
> +		mqd->free_mqd = free_mqd;
>   		mqd->load_mqd = load_mqd;
>   		mqd->update_mqd = update_mqd;
>   		mqd->destroy_mqd = destroy_mqd;
> @@ -411,8 +388,9 @@ struct mqd_manager *mqd_manager_init_cik(enum KFD_MQD_TYPE type,
>   #endif
>   		break;
>   	case KFD_MQD_TYPE_HIQ:
> +		mqd->allocate_mqd = allocate_hiq_mqd;
>   		mqd->init_mqd = init_mqd_hiq;
> -		mqd->uninit_mqd = uninit_mqd_hiq_sdma;
> +		mqd->free_mqd = free_mqd_hiq_sdma;
>   		mqd->load_mqd = load_mqd;
>   		mqd->update_mqd = update_mqd_hiq;
>   		mqd->destroy_mqd = destroy_mqd;
> @@ -423,8 +401,9 @@ struct mqd_manager *mqd_manager_init_cik(enum KFD_MQD_TYPE type,
>   #endif
>   		break;
>   	case KFD_MQD_TYPE_DIQ:
> +		mqd->allocate_mqd = allocate_hiq_mqd;
>   		mqd->init_mqd = init_mqd_hiq;
> -		mqd->uninit_mqd = uninit_mqd;
> +		mqd->free_mqd = free_mqd;
>   		mqd->load_mqd = load_mqd;
>   		mqd->update_mqd = update_mqd_hiq;
>   		mqd->destroy_mqd = destroy_mqd;
> @@ -435,8 +414,9 @@ struct mqd_manager *mqd_manager_init_cik(enum KFD_MQD_TYPE type,
>   #endif
>   		break;
>   	case KFD_MQD_TYPE_SDMA:
> +		mqd->allocate_mqd = allocate_sdma_mqd;
>   		mqd->init_mqd = init_mqd_sdma;
> -		mqd->uninit_mqd = uninit_mqd_hiq_sdma;
> +		mqd->free_mqd = free_mqd_hiq_sdma;
>   		mqd->load_mqd = load_mqd_sdma;
>   		mqd->update_mqd = update_mqd_sdma;
>   		mqd->destroy_mqd = destroy_mqd_sdma;
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c
> index 818944b..0c58f91 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c
> @@ -79,9 +79,6 @@ static struct kfd_mem_obj *allocate_mqd(struct kfd_dev *kfd,
>   	int retval;
>   	struct kfd_mem_obj *mqd_mem_obj = NULL;
>   
> -	if (q->type == KFD_QUEUE_TYPE_HIQ)
> -		return allocate_hiq_mqd(kfd);
> -
>   	/* From V9,  for CWSR, the control stack is located on the next page
>   	 * boundary after the mqd, we will use the gtt allocation function
>   	 * instead of sub-allocation function.
> @@ -110,21 +107,15 @@ static struct kfd_mem_obj *allocate_mqd(struct kfd_dev *kfd,
>   
>   }
>   
> -static int init_mqd(struct mqd_manager *mm, void **mqd,
> -			struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
> +static void init_mqd(struct mqd_manager *mm, void **mqd,
> +			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
>   			struct queue_properties *q)
>   {
> -	int retval;
>   	uint64_t addr;
>   	struct v9_mqd *m;
> -	struct kfd_dev *kfd = mm->dev;
> -
> -	*mqd_mem_obj = allocate_mqd(kfd, q);
> -	if (!*mqd_mem_obj)
> -		return -ENOMEM;
>   
> -	m = (struct v9_mqd *) (*mqd_mem_obj)->cpu_ptr;
> -	addr = (*mqd_mem_obj)->gpu_addr;
> +	m = (struct v9_mqd *) mqd_mem_obj->cpu_ptr;
> +	addr = mqd_mem_obj->gpu_addr;
>   
>   	memset(m, 0, sizeof(struct v9_mqd));
>   
> @@ -173,9 +164,7 @@ static int init_mqd(struct mqd_manager *mm, void **mqd,
>   	*mqd = m;
>   	if (gart_addr)
>   		*gart_addr = addr;
> -	retval = mm->update_mqd(mm, m, q);
> -
> -	return retval;
> +	mm->update_mqd(mm, m, q);
>   }
>   
>   static int load_mqd(struct mqd_manager *mm, void *mqd,
> @@ -190,7 +179,7 @@ static int load_mqd(struct mqd_manager *mm, void *mqd,
>   					  wptr_shift, 0, mms);
>   }
>   
> -static int update_mqd(struct mqd_manager *mm, void *mqd,
> +static void update_mqd(struct mqd_manager *mm, void *mqd,
>   		      struct queue_properties *q)
>   {
>   	struct v9_mqd *m;
> @@ -252,8 +241,6 @@ static int update_mqd(struct mqd_manager *mm, void *mqd,
>   	set_priority(m, q);
>   
>   	q->is_active = QUEUE_IS_ACTIVE(*q);
> -
> -	return 0;
>   }
>   
>   
> @@ -267,7 +254,7 @@ static int destroy_mqd(struct mqd_manager *mm, void *mqd,
>   		pipe_id, queue_id);
>   }
>   
> -static void uninit_mqd(struct mqd_manager *mm, void *mqd,
> +static void free_mqd(struct mqd_manager *mm, void *mqd,
>   			struct kfd_mem_obj *mqd_mem_obj)
>   {
>   	struct kfd_dev *kfd = mm->dev;
> @@ -311,62 +298,47 @@ static int get_wave_state(struct mqd_manager *mm, void *mqd,
>   	return 0;
>   }
>   
> -static int init_mqd_hiq(struct mqd_manager *mm, void **mqd,
> -			struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
> +static void init_mqd_hiq(struct mqd_manager *mm, void **mqd,
> +			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
>   			struct queue_properties *q)
>   {
>   	struct v9_mqd *m;
> -	int retval = init_mqd(mm, mqd, mqd_mem_obj, gart_addr, q);
>   
> -	if (retval != 0)
> -		return retval;
> +	init_mqd(mm, mqd, mqd_mem_obj, gart_addr, q);
>   
>   	m = get_mqd(*mqd);
>   
>   	m->cp_hqd_pq_control |= 1 << CP_HQD_PQ_CONTROL__PRIV_STATE__SHIFT |
>   			1 << CP_HQD_PQ_CONTROL__KMD_QUEUE__SHIFT;
> -
> -	return retval;
>   }
>   
> -static int update_mqd_hiq(struct mqd_manager *mm, void *mqd,
> +static void update_mqd_hiq(struct mqd_manager *mm, void *mqd,
>   			struct queue_properties *q)
>   {
>   	struct v9_mqd *m;
> -	int retval = update_mqd(mm, mqd, q);
>   
> -	if (retval != 0)
> -		return retval;
> +	update_mqd(mm, mqd, q);
>   
>   	/* TODO: what's the point? update_mqd already does this. */
>   	m = get_mqd(mqd);
>   	m->cp_hqd_vmid = q->vmid;
> -	return retval;
>   }
>   
> -static int init_mqd_sdma(struct mqd_manager *mm, void **mqd,
> -		struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
> +static void init_mqd_sdma(struct mqd_manager *mm, void **mqd,
> +		struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
>   		struct queue_properties *q)
>   {
> -	int retval;
>   	struct v9_sdma_mqd *m;
> -	struct kfd_dev *dev = mm->dev;
> -
> -	*mqd_mem_obj = allocate_sdma_mqd(dev, q);
> -	if (!*mqd_mem_obj)
> -		return -ENOMEM;
>   
> -	m = (struct v9_sdma_mqd *) (*mqd_mem_obj)->cpu_ptr;
> +	m = (struct v9_sdma_mqd *) mqd_mem_obj->cpu_ptr;
>   
>   	memset(m, 0, sizeof(struct v9_sdma_mqd));
>   
>   	*mqd = m;
>   	if (gart_addr)
> -		*gart_addr = (*mqd_mem_obj)->gpu_addr;
> +		*gart_addr = mqd_mem_obj->gpu_addr;
>   
> -	retval = mm->update_mqd(mm, m, q);
> -
> -	return retval;
> +	mm->update_mqd(mm, m, q);
>   }
>   
>   static int load_mqd_sdma(struct mqd_manager *mm, void *mqd,
> @@ -380,7 +352,7 @@ static int load_mqd_sdma(struct mqd_manager *mm, void *mqd,
>   
>   #define SDMA_RLC_DUMMY_DEFAULT 0xf
>   
> -static int update_mqd_sdma(struct mqd_manager *mm, void *mqd,
> +static void update_mqd_sdma(struct mqd_manager *mm, void *mqd,
>   		struct queue_properties *q)
>   {
>   	struct v9_sdma_mqd *m;
> @@ -404,8 +376,6 @@ static int update_mqd_sdma(struct mqd_manager *mm, void *mqd,
>   	m->sdmax_rlcx_dummy_reg = SDMA_RLC_DUMMY_DEFAULT;
>   
>   	q->is_active = QUEUE_IS_ACTIVE(*q);
> -
> -	return 0;
>   }
>   
>   /*
> @@ -462,8 +432,9 @@ struct mqd_manager *mqd_manager_init_v9(enum KFD_MQD_TYPE type,
>   	switch (type) {
>   	case KFD_MQD_TYPE_CP:
>   	case KFD_MQD_TYPE_COMPUTE:
> +		mqd->allocate_mqd = allocate_mqd;
>   		mqd->init_mqd = init_mqd;
> -		mqd->uninit_mqd = uninit_mqd;
> +		mqd->free_mqd = free_mqd;
>   		mqd->load_mqd = load_mqd;
>   		mqd->update_mqd = update_mqd;
>   		mqd->destroy_mqd = destroy_mqd;
> @@ -475,8 +446,9 @@ struct mqd_manager *mqd_manager_init_v9(enum KFD_MQD_TYPE type,
>   #endif
>   		break;
>   	case KFD_MQD_TYPE_HIQ:
> +		mqd->allocate_mqd = allocate_hiq_mqd;
>   		mqd->init_mqd = init_mqd_hiq;
> -		mqd->uninit_mqd = uninit_mqd_hiq_sdma;
> +		mqd->free_mqd = free_mqd_hiq_sdma;
>   		mqd->load_mqd = load_mqd;
>   		mqd->update_mqd = update_mqd_hiq;
>   		mqd->destroy_mqd = destroy_mqd;
> @@ -487,8 +459,9 @@ struct mqd_manager *mqd_manager_init_v9(enum KFD_MQD_TYPE type,
>   #endif
>   		break;
>   	case KFD_MQD_TYPE_DIQ:
> +		mqd->allocate_mqd = allocate_hiq_mqd;
>   		mqd->init_mqd = init_mqd_hiq;
> -		mqd->uninit_mqd = uninit_mqd;
> +		mqd->free_mqd = free_mqd;
>   		mqd->load_mqd = load_mqd;
>   		mqd->update_mqd = update_mqd_hiq;
>   		mqd->destroy_mqd = destroy_mqd;
> @@ -499,8 +472,9 @@ struct mqd_manager *mqd_manager_init_v9(enum KFD_MQD_TYPE type,
>   #endif
>   		break;
>   	case KFD_MQD_TYPE_SDMA:
> +		mqd->allocate_mqd = allocate_sdma_mqd;
>   		mqd->init_mqd = init_mqd_sdma;
> -		mqd->uninit_mqd = uninit_mqd_hiq_sdma;
> +		mqd->free_mqd = free_mqd_hiq_sdma;
>   		mqd->load_mqd = load_mqd_sdma;
>   		mqd->update_mqd = update_mqd_sdma;
>   		mqd->destroy_mqd = destroy_mqd_sdma;
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c
> index 00e6a59..7d144f5 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c
> @@ -80,9 +80,6 @@ static struct kfd_mem_obj *allocate_mqd(struct kfd_dev *kfd,
>   {
>   	struct kfd_mem_obj *mqd_mem_obj;
>   
> -	if (q->type == KFD_QUEUE_TYPE_HIQ)
> -		return allocate_hiq_mqd(kfd);
> -
>   	if (kfd_gtt_sa_allocate(kfd, sizeof(struct vi_mqd),
>   			&mqd_mem_obj))
>   		return NULL;
> @@ -90,21 +87,15 @@ static struct kfd_mem_obj *allocate_mqd(struct kfd_dev *kfd,
>   	return mqd_mem_obj;
>   }
>   
> -static int init_mqd(struct mqd_manager *mm, void **mqd,
> -			struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
> +static void init_mqd(struct mqd_manager *mm, void **mqd,
> +			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
>   			struct queue_properties *q)
>   {
> -	int retval;
>   	uint64_t addr;
>   	struct vi_mqd *m;
> -	struct kfd_dev *kfd = mm->dev;
> -
> -	*mqd_mem_obj = allocate_mqd(kfd, q);
> -	if (!*mqd_mem_obj)
> -		return -ENOMEM;
>   
> -	m = (struct vi_mqd *) (*mqd_mem_obj)->cpu_ptr;
> -	addr = (*mqd_mem_obj)->gpu_addr;
> +	m = (struct vi_mqd *) mqd_mem_obj->cpu_ptr;
> +	addr = mqd_mem_obj->gpu_addr;
>   
>   	memset(m, 0, sizeof(struct vi_mqd));
>   
> @@ -159,9 +150,7 @@ static int init_mqd(struct mqd_manager *mm, void **mqd,
>   	*mqd = m;
>   	if (gart_addr)
>   		*gart_addr = addr;
> -	retval = mm->update_mqd(mm, m, q);
> -
> -	return retval;
> +	mm->update_mqd(mm, m, q);
>   }
>   
>   static int load_mqd(struct mqd_manager *mm, void *mqd,
> @@ -177,7 +166,7 @@ static int load_mqd(struct mqd_manager *mm, void *mqd,
>   					  wptr_shift, wptr_mask, mms);
>   }
>   
> -static int __update_mqd(struct mqd_manager *mm, void *mqd,
> +static void __update_mqd(struct mqd_manager *mm, void *mqd,
>   			struct queue_properties *q, unsigned int mtype,
>   			unsigned int atc_bit)
>   {
> @@ -245,21 +234,19 @@ static int __update_mqd(struct mqd_manager *mm, void *mqd,
>   	set_priority(m, q);
>   
>   	q->is_active = QUEUE_IS_ACTIVE(*q);
> -
> -	return 0;
>   }
>   
>   
> -static int update_mqd(struct mqd_manager *mm, void *mqd,
> +static void update_mqd(struct mqd_manager *mm, void *mqd,
>   			struct queue_properties *q)
>   {
> -	return __update_mqd(mm, mqd, q, MTYPE_CC, 1);
> +	__update_mqd(mm, mqd, q, MTYPE_CC, 1);
>   }
>   
> -static int update_mqd_tonga(struct mqd_manager *mm, void *mqd,
> +static void update_mqd_tonga(struct mqd_manager *mm, void *mqd,
>   			struct queue_properties *q)
>   {
> -	return __update_mqd(mm, mqd, q, MTYPE_UC, 0);
> +	__update_mqd(mm, mqd, q, MTYPE_UC, 0);
>   }
>   
>   static int destroy_mqd(struct mqd_manager *mm, void *mqd,
> @@ -272,7 +259,7 @@ static int destroy_mqd(struct mqd_manager *mm, void *mqd,
>   		pipe_id, queue_id);
>   }
>   
> -static void uninit_mqd(struct mqd_manager *mm, void *mqd,
> +static void free_mqd(struct mqd_manager *mm, void *mqd,
>   			struct kfd_mem_obj *mqd_mem_obj)
>   {
>   	kfd_gtt_sa_free(mm->dev, mqd_mem_obj);
> @@ -309,61 +296,44 @@ static int get_wave_state(struct mqd_manager *mm, void *mqd,
>   	return 0;
>   }
>   
> -static int init_mqd_hiq(struct mqd_manager *mm, void **mqd,
> -			struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
> +static void init_mqd_hiq(struct mqd_manager *mm, void **mqd,
> +			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
>   			struct queue_properties *q)
>   {
>   	struct vi_mqd *m;
> -	int retval = init_mqd(mm, mqd, mqd_mem_obj, gart_addr, q);
> -
> -	if (retval != 0)
> -		return retval;
> +	init_mqd(mm, mqd, mqd_mem_obj, gart_addr, q);
>   
>   	m = get_mqd(*mqd);
>   
>   	m->cp_hqd_pq_control |= 1 << CP_HQD_PQ_CONTROL__PRIV_STATE__SHIFT |
>   			1 << CP_HQD_PQ_CONTROL__KMD_QUEUE__SHIFT;
> -
> -	return retval;
>   }
>   
> -static int update_mqd_hiq(struct mqd_manager *mm, void *mqd,
> +static void update_mqd_hiq(struct mqd_manager *mm, void *mqd,
>   			struct queue_properties *q)
>   {
>   	struct vi_mqd *m;
> -	int retval = __update_mqd(mm, mqd, q, MTYPE_UC, 0);
> -
> -	if (retval != 0)
> -		return retval;
> +	__update_mqd(mm, mqd, q, MTYPE_UC, 0);
>   
>   	m = get_mqd(mqd);
>   	m->cp_hqd_vmid = q->vmid;
> -	return retval;
>   }
>   
> -static int init_mqd_sdma(struct mqd_manager *mm, void **mqd,
> -		struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
> +static void init_mqd_sdma(struct mqd_manager *mm, void **mqd,
> +		struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
>   		struct queue_properties *q)
>   {
> -	int retval;
>   	struct vi_sdma_mqd *m;
> -	struct kfd_dev *dev = mm->dev;
> -
> -	*mqd_mem_obj = allocate_sdma_mqd(dev, q);
> -	if (!*mqd_mem_obj)
> -		return -ENOMEM;
>   
> -	m = (struct vi_sdma_mqd *) (*mqd_mem_obj)->cpu_ptr;
> +	m = (struct vi_sdma_mqd *) mqd_mem_obj->cpu_ptr;
>   
>   	memset(m, 0, sizeof(struct vi_sdma_mqd));
>   
>   	*mqd = m;
>   	if (gart_addr)
> -		*gart_addr = (*mqd_mem_obj)->gpu_addr;
> +		*gart_addr = mqd_mem_obj->gpu_addr;
>   
> -	retval = mm->update_mqd(mm, m, q);
> -
> -	return retval;
> +	mm->update_mqd(mm, m, q);
>   }
>   
>   static int load_mqd_sdma(struct mqd_manager *mm, void *mqd,
> @@ -375,7 +345,7 @@ static int load_mqd_sdma(struct mqd_manager *mm, void *mqd,
>   					       mms);
>   }
>   
> -static int update_mqd_sdma(struct mqd_manager *mm, void *mqd,
> +static void update_mqd_sdma(struct mqd_manager *mm, void *mqd,
>   		struct queue_properties *q)
>   {
>   	struct vi_sdma_mqd *m;
> @@ -400,8 +370,6 @@ static int update_mqd_sdma(struct mqd_manager *mm, void *mqd,
>   	m->sdma_queue_id = q->sdma_queue_id;
>   
>   	q->is_active = QUEUE_IS_ACTIVE(*q);
> -
> -	return 0;
>   }
>   
>   /*
> @@ -458,8 +426,9 @@ struct mqd_manager *mqd_manager_init_vi(enum KFD_MQD_TYPE type,
>   	switch (type) {
>   	case KFD_MQD_TYPE_CP:
>   	case KFD_MQD_TYPE_COMPUTE:
> +		mqd->allocate_mqd = allocate_mqd;
>   		mqd->init_mqd = init_mqd;
> -		mqd->uninit_mqd = uninit_mqd;
> +		mqd->free_mqd = free_mqd;
>   		mqd->load_mqd = load_mqd;
>   		mqd->update_mqd = update_mqd;
>   		mqd->destroy_mqd = destroy_mqd;
> @@ -471,8 +440,9 @@ struct mqd_manager *mqd_manager_init_vi(enum KFD_MQD_TYPE type,
>   #endif
>   		break;
>   	case KFD_MQD_TYPE_HIQ:
> +		mqd->allocate_mqd = allocate_hiq_mqd;
>   		mqd->init_mqd = init_mqd_hiq;
> -		mqd->uninit_mqd = uninit_mqd_hiq_sdma;
> +		mqd->free_mqd = free_mqd_hiq_sdma;
>   		mqd->load_mqd = load_mqd;
>   		mqd->update_mqd = update_mqd_hiq;
>   		mqd->destroy_mqd = destroy_mqd;
> @@ -483,8 +453,9 @@ struct mqd_manager *mqd_manager_init_vi(enum KFD_MQD_TYPE type,
>   #endif
>   		break;
>   	case KFD_MQD_TYPE_DIQ:
> +		mqd->allocate_mqd = allocate_hiq_mqd;
>   		mqd->init_mqd = init_mqd_hiq;
> -		mqd->uninit_mqd = uninit_mqd;
> +		mqd->free_mqd = free_mqd;
>   		mqd->load_mqd = load_mqd;
>   		mqd->update_mqd = update_mqd_hiq;
>   		mqd->destroy_mqd = destroy_mqd;
> @@ -495,8 +466,9 @@ struct mqd_manager *mqd_manager_init_vi(enum KFD_MQD_TYPE type,
>   #endif
>   		break;
>   	case KFD_MQD_TYPE_SDMA:
> +		mqd->allocate_mqd = allocate_sdma_mqd;
>   		mqd->init_mqd = init_mqd_sdma;
> -		mqd->uninit_mqd = uninit_mqd_hiq_sdma;
> +		mqd->free_mqd = free_mqd_hiq_sdma;
>   		mqd->load_mqd = load_mqd_sdma;
>   		mqd->update_mqd = update_mqd_sdma;
>   		mqd->destroy_mqd = destroy_mqd_sdma;
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[PATCH 1/6] drm/amdkfd: Only initialize sdma vm for sdma queues

[Zeng, Oak]

Don't do the same for compute queues

Change-Id: Id5f743ca10c2b761590bfe18cab2f802d3c04d2d
Signed-off-by: Oak Zeng <Oak.Zeng@amd.com>
---
 drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
index c18355d..00ca3dd 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
@@ -1209,8 +1209,9 @@ static int create_queue_cpsch(struct device_queue_manager *dqm, struct queue *q,
 	 * updates the is_evicted flag but is a no-op otherwise.
 	 */
 	q->properties.is_evicted = !!qpd->evicted;
-
-	dqm->asic_ops.init_sdma_vm(dqm, q, qpd);
+	if (q->properties.type == KFD_QUEUE_TYPE_SDMA ||
+		q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)
+		dqm->asic_ops.init_sdma_vm(dqm, q, qpd);
 	q->properties.tba_addr = qpd->tba_addr;
 	q->properties.tma_addr = qpd->tma_addr;
 	retval = mqd_mgr->init_mqd(mqd_mgr, &q->mqd, &q->mqd_mem_obj,
-- 
2.7.4

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[PATCH 4/6] drm/amdkfd: Separate mqd allocation and initialization

[Zeng, Oak]

Introduce a new mqd allocation interface and split the original
init_mqd function into two functions: allocate_mqd and init_mqd.
This is preparation work to fix a circular lock dependency.

Change-Id: I26e53ee1abcdd688ad11d35b433da77e3fa1bee7
Signed-off-by: Oak Zeng <Oak.Zeng@amd.com>
---
 .../gpu/drm/amd/amdkfd/kfd_device_queue_manager.c  | 16 ++++++++---
 drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c      |  8 +++++-
 drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c       |  2 +-
 drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h       |  8 ++++--
 drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c   | 31 ++++++++--------------
 drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c    | 31 ++++++++--------------
 drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c    | 31 ++++++++--------------
 7 files changed, 59 insertions(+), 68 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
index 3c042eb..787b5be 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
@@ -319,10 +319,13 @@ static int create_queue_nocpsch(struct device_queue_manager *dqm,
 	if (retval)
 		goto out_deallocate_hqd;
 
-	retval = mqd_mgr->init_mqd(mqd_mgr, &q->mqd, &q->mqd_mem_obj,
+	q->mqd_mem_obj = mqd_mgr->allocate_mqd(mqd_mgr->dev, &q->properties);
+	if (!q->mqd_mem_obj)
+		goto out_deallocate_doorbell;
+	retval = mqd_mgr->init_mqd(mqd_mgr, &q->mqd, q->mqd_mem_obj,
 				&q->gart_mqd_addr, &q->properties);
 	if (retval)
-		goto out_deallocate_doorbell;
+		goto out_uninit_mqd;
 
 	if (q->properties.is_active) {
 
@@ -1160,10 +1163,13 @@ static int create_queue_cpsch(struct device_queue_manager *dqm, struct queue *q,
 		dqm->asic_ops.init_sdma_vm(dqm, q, qpd);
 	q->properties.tba_addr = qpd->tba_addr;
 	q->properties.tma_addr = qpd->tma_addr;
-	retval = mqd_mgr->init_mqd(mqd_mgr, &q->mqd, &q->mqd_mem_obj,
+	q->mqd_mem_obj = mqd_mgr->allocate_mqd(mqd_mgr->dev, &q->properties);
+	if (!q->mqd_mem_obj)
+		goto out_deallocate_doorbell;
+	retval = mqd_mgr->init_mqd(mqd_mgr, &q->mqd, q->mqd_mem_obj,
 				&q->gart_mqd_addr, &q->properties);
 	if (retval)
-		goto out_deallocate_doorbell;
+		goto out_deallocate_mqd;
 
 	dqm_lock(dqm);
 
@@ -1191,6 +1197,8 @@ static int create_queue_cpsch(struct device_queue_manager *dqm, struct queue *q,
 	dqm_unlock(dqm);
 	return retval;
 
+out_deallocate_mqd:
+	mqd_mgr->uninit_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
 out_deallocate_doorbell:
 	deallocate_doorbell(qpd, q);
 out_deallocate_sdma_queue:
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c b/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c
index 1cc03b3..64c8ffe 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c
@@ -132,8 +132,12 @@ static bool initialize(struct kernel_queue *kq, struct kfd_dev *dev,
 	kq->queue->device = dev;
 	kq->queue->process = kfd_get_process(current);
 
+	kq->queue->mqd_mem_obj = kq->mqd_mgr->allocate_mqd(kq->mqd_mgr->dev,
+					&kq->queue->properties);
+	if (!kq->queue->mqd_mem_obj)
+		goto err_allocate_mqd;
 	retval = kq->mqd_mgr->init_mqd(kq->mqd_mgr, &kq->queue->mqd,
-					&kq->queue->mqd_mem_obj,
+					kq->queue->mqd_mem_obj,
 					&kq->queue->gart_mqd_addr,
 					&kq->queue->properties);
 	if (retval != 0)
@@ -165,6 +169,8 @@ static bool initialize(struct kernel_queue *kq, struct kfd_dev *dev,
 	return true;
 err_alloc_fence:
 err_init_mqd:
+	kq->mqd_mgr->uninit_mqd(kq->mqd_mgr, kq->queue->mqd, kq->queue->mqd_mem_obj);
+err_allocate_mqd:
 	uninit_queue(kq->queue);
 err_init_queue:
 	kfd_gtt_sa_free(dev, kq->wptr_mem);
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c
index cc04b362..b4f305a 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c
@@ -45,7 +45,7 @@ int pipe_priority_map[] = {
 	KFD_PIPE_PRIORITY_CS_HIGH
 };
 
-struct kfd_mem_obj *allocate_hiq_mqd(struct kfd_dev *dev)
+struct kfd_mem_obj *allocate_hiq_mqd(struct kfd_dev *dev, struct queue_properties *q)
 {
 	struct kfd_mem_obj *mqd_mem_obj = NULL;
 
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h
index 66b8c67..8667990 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h
@@ -64,8 +64,11 @@
  */
 extern int pipe_priority_map[];
 struct mqd_manager {
+	struct kfd_mem_obj*	(*allocate_mqd)(struct kfd_dev *kfd,
+		struct queue_properties *q);
+
 	int	(*init_mqd)(struct mqd_manager *mm, void **mqd,
-			struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
+			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
 			struct queue_properties *q);
 
 	int	(*load_mqd)(struct mqd_manager *mm, void *mqd,
@@ -102,7 +105,8 @@ struct mqd_manager {
 	uint32_t mqd_size;
 };
 
-struct kfd_mem_obj *allocate_hiq_mqd(struct kfd_dev *dev);
+struct kfd_mem_obj *allocate_hiq_mqd(struct kfd_dev *dev,
+				struct queue_properties *q);
 
 struct kfd_mem_obj *allocate_sdma_mqd(struct kfd_dev *dev,
 					struct queue_properties *q);
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c
index e911438..bbe808d 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c
@@ -77,9 +77,6 @@ static struct kfd_mem_obj *allocate_mqd(struct kfd_dev *kfd,
 {
 	struct kfd_mem_obj *mqd_mem_obj;
 
-	if (q->type == KFD_QUEUE_TYPE_HIQ)
-		return allocate_hiq_mqd(kfd);
-
 	if (kfd_gtt_sa_allocate(kfd, sizeof(struct cik_mqd),
 			&mqd_mem_obj))
 		return NULL;
@@ -88,20 +85,15 @@ static struct kfd_mem_obj *allocate_mqd(struct kfd_dev *kfd,
 }
 
 static int init_mqd(struct mqd_manager *mm, void **mqd,
-		struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
+		struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
 		struct queue_properties *q)
 {
 	uint64_t addr;
 	struct cik_mqd *m;
 	int retval;
-	struct kfd_dev *kfd = mm->dev;
-
-	*mqd_mem_obj = allocate_mqd(kfd, q);
-	if (!*mqd_mem_obj)
-		return -ENOMEM;
 
-	m = (struct cik_mqd *) (*mqd_mem_obj)->cpu_ptr;
-	addr = (*mqd_mem_obj)->gpu_addr;
+	m = (struct cik_mqd *) mqd_mem_obj->cpu_ptr;
+	addr = mqd_mem_obj->gpu_addr;
 
 	memset(m, 0, ALIGN(sizeof(struct cik_mqd), 256));
 
@@ -150,24 +142,19 @@ static int init_mqd(struct mqd_manager *mm, void **mqd,
 }
 
 static int init_mqd_sdma(struct mqd_manager *mm, void **mqd,
-			struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
+			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
 			struct queue_properties *q)
 {
 	int retval;
 	struct cik_sdma_rlc_registers *m;
-	struct kfd_dev *dev = mm->dev;
-
-	*mqd_mem_obj = allocate_sdma_mqd(dev, q);
-	if (!*mqd_mem_obj)
-		return -ENOMEM;
 
-	m = (struct cik_sdma_rlc_registers *) (*mqd_mem_obj)->cpu_ptr;
+	m = (struct cik_sdma_rlc_registers *) mqd_mem_obj->cpu_ptr;
 
 	memset(m, 0, sizeof(struct cik_sdma_rlc_registers));
 
 	*mqd = m;
 	if (gart_addr)
-		*gart_addr = (*mqd_mem_obj)->gpu_addr;
+		*gart_addr = mqd_mem_obj->gpu_addr;
 
 	retval = mm->update_mqd(mm, m, q);
 
@@ -327,7 +314,7 @@ static bool is_occupied_sdma(struct mqd_manager *mm, void *mqd,
  */
 
 static int init_mqd_hiq(struct mqd_manager *mm, void **mqd,
-		struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
+		struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
 		struct queue_properties *q)
 {
 	return init_mqd(mm, mqd, mqd_mem_obj, gart_addr, q);
@@ -399,6 +386,7 @@ struct mqd_manager *mqd_manager_init_cik(enum KFD_MQD_TYPE type,
 	switch (type) {
 	case KFD_MQD_TYPE_CP:
 	case KFD_MQD_TYPE_COMPUTE:
+		mqd->allocate_mqd = allocate_mqd;
 		mqd->init_mqd = init_mqd;
 		mqd->uninit_mqd = uninit_mqd;
 		mqd->load_mqd = load_mqd;
@@ -411,6 +399,7 @@ struct mqd_manager *mqd_manager_init_cik(enum KFD_MQD_TYPE type,
 #endif
 		break;
 	case KFD_MQD_TYPE_HIQ:
+		mqd->allocate_mqd = allocate_hiq_mqd;
 		mqd->init_mqd = init_mqd_hiq;
 		mqd->uninit_mqd = uninit_mqd_hiq_sdma;
 		mqd->load_mqd = load_mqd;
@@ -423,6 +412,7 @@ struct mqd_manager *mqd_manager_init_cik(enum KFD_MQD_TYPE type,
 #endif
 		break;
 	case KFD_MQD_TYPE_DIQ:
+		mqd->allocate_mqd = allocate_hiq_mqd;
 		mqd->init_mqd = init_mqd_hiq;
 		mqd->uninit_mqd = uninit_mqd;
 		mqd->load_mqd = load_mqd;
@@ -435,6 +425,7 @@ struct mqd_manager *mqd_manager_init_cik(enum KFD_MQD_TYPE type,
 #endif
 		break;
 	case KFD_MQD_TYPE_SDMA:
+		mqd->allocate_mqd = allocate_sdma_mqd;
 		mqd->init_mqd = init_mqd_sdma;
 		mqd->uninit_mqd = uninit_mqd_hiq_sdma;
 		mqd->load_mqd = load_mqd_sdma;
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c
index 818944b..572cc6a 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c
@@ -79,9 +79,6 @@ static struct kfd_mem_obj *allocate_mqd(struct kfd_dev *kfd,
 	int retval;
 	struct kfd_mem_obj *mqd_mem_obj = NULL;
 
-	if (q->type == KFD_QUEUE_TYPE_HIQ)
-		return allocate_hiq_mqd(kfd);
-
 	/* From V9,  for CWSR, the control stack is located on the next page
 	 * boundary after the mqd, we will use the gtt allocation function
 	 * instead of sub-allocation function.
@@ -111,20 +108,15 @@ static struct kfd_mem_obj *allocate_mqd(struct kfd_dev *kfd,
 }
 
 static int init_mqd(struct mqd_manager *mm, void **mqd,
-			struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
+			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
 			struct queue_properties *q)
 {
 	int retval;
 	uint64_t addr;
 	struct v9_mqd *m;
-	struct kfd_dev *kfd = mm->dev;
 
-	*mqd_mem_obj = allocate_mqd(kfd, q);
-	if (!*mqd_mem_obj)
-		return -ENOMEM;
-
-	m = (struct v9_mqd *) (*mqd_mem_obj)->cpu_ptr;
-	addr = (*mqd_mem_obj)->gpu_addr;
+	m = (struct v9_mqd *) mqd_mem_obj->cpu_ptr;
+	addr = mqd_mem_obj->gpu_addr;
 
 	memset(m, 0, sizeof(struct v9_mqd));
 
@@ -312,7 +304,7 @@ static int get_wave_state(struct mqd_manager *mm, void *mqd,
 }
 
 static int init_mqd_hiq(struct mqd_manager *mm, void **mqd,
-			struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
+			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
 			struct queue_properties *q)
 {
 	struct v9_mqd *m;
@@ -345,24 +337,19 @@ static int update_mqd_hiq(struct mqd_manager *mm, void *mqd,
 }
 
 static int init_mqd_sdma(struct mqd_manager *mm, void **mqd,
-		struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
+		struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
 		struct queue_properties *q)
 {
 	int retval;
 	struct v9_sdma_mqd *m;
-	struct kfd_dev *dev = mm->dev;
-
-	*mqd_mem_obj = allocate_sdma_mqd(dev, q);
-	if (!*mqd_mem_obj)
-		return -ENOMEM;
 
-	m = (struct v9_sdma_mqd *) (*mqd_mem_obj)->cpu_ptr;
+	m = (struct v9_sdma_mqd *) mqd_mem_obj->cpu_ptr;
 
 	memset(m, 0, sizeof(struct v9_sdma_mqd));
 
 	*mqd = m;
 	if (gart_addr)
-		*gart_addr = (*mqd_mem_obj)->gpu_addr;
+		*gart_addr = mqd_mem_obj->gpu_addr;
 
 	retval = mm->update_mqd(mm, m, q);
 
@@ -462,6 +449,7 @@ struct mqd_manager *mqd_manager_init_v9(enum KFD_MQD_TYPE type,
 	switch (type) {
 	case KFD_MQD_TYPE_CP:
 	case KFD_MQD_TYPE_COMPUTE:
+		mqd->allocate_mqd = allocate_mqd;
 		mqd->init_mqd = init_mqd;
 		mqd->uninit_mqd = uninit_mqd;
 		mqd->load_mqd = load_mqd;
@@ -475,6 +463,7 @@ struct mqd_manager *mqd_manager_init_v9(enum KFD_MQD_TYPE type,
 #endif
 		break;
 	case KFD_MQD_TYPE_HIQ:
+		mqd->allocate_mqd = allocate_hiq_mqd;
 		mqd->init_mqd = init_mqd_hiq;
 		mqd->uninit_mqd = uninit_mqd_hiq_sdma;
 		mqd->load_mqd = load_mqd;
@@ -487,6 +476,7 @@ struct mqd_manager *mqd_manager_init_v9(enum KFD_MQD_TYPE type,
 #endif
 		break;
 	case KFD_MQD_TYPE_DIQ:
+		mqd->allocate_mqd = allocate_hiq_mqd;
 		mqd->init_mqd = init_mqd_hiq;
 		mqd->uninit_mqd = uninit_mqd;
 		mqd->load_mqd = load_mqd;
@@ -499,6 +489,7 @@ struct mqd_manager *mqd_manager_init_v9(enum KFD_MQD_TYPE type,
 #endif
 		break;
 	case KFD_MQD_TYPE_SDMA:
+		mqd->allocate_mqd = allocate_sdma_mqd;
 		mqd->init_mqd = init_mqd_sdma;
 		mqd->uninit_mqd = uninit_mqd_hiq_sdma;
 		mqd->load_mqd = load_mqd_sdma;
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c
index 00e6a59..431899f 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c
@@ -80,9 +80,6 @@ static struct kfd_mem_obj *allocate_mqd(struct kfd_dev *kfd,
 {
 	struct kfd_mem_obj *mqd_mem_obj;
 
-	if (q->type == KFD_QUEUE_TYPE_HIQ)
-		return allocate_hiq_mqd(kfd);
-
 	if (kfd_gtt_sa_allocate(kfd, sizeof(struct vi_mqd),
 			&mqd_mem_obj))
 		return NULL;
@@ -91,20 +88,15 @@ static struct kfd_mem_obj *allocate_mqd(struct kfd_dev *kfd,
 }
 
 static int init_mqd(struct mqd_manager *mm, void **mqd,
-			struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
+			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
 			struct queue_properties *q)
 {
 	int retval;
 	uint64_t addr;
 	struct vi_mqd *m;
-	struct kfd_dev *kfd = mm->dev;
-
-	*mqd_mem_obj = allocate_mqd(kfd, q);
-	if (!*mqd_mem_obj)
-		return -ENOMEM;
 
-	m = (struct vi_mqd *) (*mqd_mem_obj)->cpu_ptr;
-	addr = (*mqd_mem_obj)->gpu_addr;
+	m = (struct vi_mqd *) mqd_mem_obj->cpu_ptr;
+	addr = mqd_mem_obj->gpu_addr;
 
 	memset(m, 0, sizeof(struct vi_mqd));
 
@@ -310,7 +302,7 @@ static int get_wave_state(struct mqd_manager *mm, void *mqd,
 }
 
 static int init_mqd_hiq(struct mqd_manager *mm, void **mqd,
-			struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
+			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
 			struct queue_properties *q)
 {
 	struct vi_mqd *m;
@@ -342,24 +334,19 @@ static int update_mqd_hiq(struct mqd_manager *mm, void *mqd,
 }
 
 static int init_mqd_sdma(struct mqd_manager *mm, void **mqd,
-		struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
+		struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
 		struct queue_properties *q)
 {
 	int retval;
 	struct vi_sdma_mqd *m;
-	struct kfd_dev *dev = mm->dev;
-
-	*mqd_mem_obj = allocate_sdma_mqd(dev, q);
-	if (!*mqd_mem_obj)
-		return -ENOMEM;
 
-	m = (struct vi_sdma_mqd *) (*mqd_mem_obj)->cpu_ptr;
+	m = (struct vi_sdma_mqd *) mqd_mem_obj->cpu_ptr;
 
 	memset(m, 0, sizeof(struct vi_sdma_mqd));
 
 	*mqd = m;
 	if (gart_addr)
-		*gart_addr = (*mqd_mem_obj)->gpu_addr;
+		*gart_addr = mqd_mem_obj->gpu_addr;
 
 	retval = mm->update_mqd(mm, m, q);
 
@@ -458,6 +445,7 @@ struct mqd_manager *mqd_manager_init_vi(enum KFD_MQD_TYPE type,
 	switch (type) {
 	case KFD_MQD_TYPE_CP:
 	case KFD_MQD_TYPE_COMPUTE:
+		mqd->allocate_mqd = allocate_mqd;
 		mqd->init_mqd = init_mqd;
 		mqd->uninit_mqd = uninit_mqd;
 		mqd->load_mqd = load_mqd;
@@ -471,6 +459,7 @@ struct mqd_manager *mqd_manager_init_vi(enum KFD_MQD_TYPE type,
 #endif
 		break;
 	case KFD_MQD_TYPE_HIQ:
+		mqd->allocate_mqd = allocate_hiq_mqd;
 		mqd->init_mqd = init_mqd_hiq;
 		mqd->uninit_mqd = uninit_mqd_hiq_sdma;
 		mqd->load_mqd = load_mqd;
@@ -483,6 +472,7 @@ struct mqd_manager *mqd_manager_init_vi(enum KFD_MQD_TYPE type,
 #endif
 		break;
 	case KFD_MQD_TYPE_DIQ:
+		mqd->allocate_mqd = allocate_hiq_mqd;
 		mqd->init_mqd = init_mqd_hiq;
 		mqd->uninit_mqd = uninit_mqd;
 		mqd->load_mqd = load_mqd;
@@ -495,6 +485,7 @@ struct mqd_manager *mqd_manager_init_vi(enum KFD_MQD_TYPE type,
 #endif
 		break;
 	case KFD_MQD_TYPE_SDMA:
+		mqd->allocate_mqd = allocate_sdma_mqd;
 		mqd->init_mqd = init_mqd_sdma;
 		mqd->uninit_mqd = uninit_mqd_hiq_sdma;
 		mqd->load_mqd = load_mqd_sdma;
-- 
2.7.4

_______________________________________________
amd-gfx mailing list
amd-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/amd-gfx

Re: [PATCH 4/6] drm/amdkfd: Separate mqd allocation and initialization

[Kuehling, Felix]

Nice. Surprisingly this actually resulted in slightly fewer lines of 
code. Some suggestions:

Let's also rename uninit_mqd to free_mqd, as it is the counterpart to 
allocate_mqd, not init_mqd.

And unless I'm missing something, init_mqd and update_mqd cannot fail 
now that allocate_mqd has been separated from them. That means you could 
change them to void functions, and it may simplify some of the error 
handling if you have fewer potential failure cases to consider.

Regards,
   Felix

On 2019-06-05 12:06 p.m., Zeng, Oak wrote:
> Introduce a new mqd allocation interface and split the original
> init_mqd function into two functions: allocate_mqd and init_mqd.
> This is preparation work to fix a circular lock dependency.
>
> Change-Id: I26e53ee1abcdd688ad11d35b433da77e3fa1bee7
> Signed-off-by: Oak Zeng <Oak.Zeng@amd.com>
> ---
>   .../gpu/drm/amd/amdkfd/kfd_device_queue_manager.c  | 16 ++++++++---
>   drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c      |  8 +++++-
>   drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c       |  2 +-
>   drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h       |  8 ++++--
>   drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c   | 31 ++++++++--------------
>   drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c    | 31 ++++++++--------------
>   drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c    | 31 ++++++++--------------
>   7 files changed, 59 insertions(+), 68 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
> index 3c042eb..787b5be 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
> @@ -319,10 +319,13 @@ static int create_queue_nocpsch(struct device_queue_manager *dqm,
>   	if (retval)
>   		goto out_deallocate_hqd;
>   
> -	retval = mqd_mgr->init_mqd(mqd_mgr, &q->mqd, &q->mqd_mem_obj,
> +	q->mqd_mem_obj = mqd_mgr->allocate_mqd(mqd_mgr->dev, &q->properties);
> +	if (!q->mqd_mem_obj)
> +		goto out_deallocate_doorbell;
> +	retval = mqd_mgr->init_mqd(mqd_mgr, &q->mqd, q->mqd_mem_obj,
>   				&q->gart_mqd_addr, &q->properties);
>   	if (retval)
> -		goto out_deallocate_doorbell;
> +		goto out_uninit_mqd;
>   
>   	if (q->properties.is_active) {
>   
> @@ -1160,10 +1163,13 @@ static int create_queue_cpsch(struct device_queue_manager *dqm, struct queue *q,
>   		dqm->asic_ops.init_sdma_vm(dqm, q, qpd);
>   	q->properties.tba_addr = qpd->tba_addr;
>   	q->properties.tma_addr = qpd->tma_addr;
> -	retval = mqd_mgr->init_mqd(mqd_mgr, &q->mqd, &q->mqd_mem_obj,
> +	q->mqd_mem_obj = mqd_mgr->allocate_mqd(mqd_mgr->dev, &q->properties);
> +	if (!q->mqd_mem_obj)
> +		goto out_deallocate_doorbell;
> +	retval = mqd_mgr->init_mqd(mqd_mgr, &q->mqd, q->mqd_mem_obj,
>   				&q->gart_mqd_addr, &q->properties);
>   	if (retval)
> -		goto out_deallocate_doorbell;
> +		goto out_deallocate_mqd;
>   
>   	dqm_lock(dqm);
>   
> @@ -1191,6 +1197,8 @@ static int create_queue_cpsch(struct device_queue_manager *dqm, struct queue *q,
>   	dqm_unlock(dqm);
>   	return retval;
>   
> +out_deallocate_mqd:
> +	mqd_mgr->uninit_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
>   out_deallocate_doorbell:
>   	deallocate_doorbell(qpd, q);
>   out_deallocate_sdma_queue:
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c b/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c
> index 1cc03b3..64c8ffe 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c
> @@ -132,8 +132,12 @@ static bool initialize(struct kernel_queue *kq, struct kfd_dev *dev,
>   	kq->queue->device = dev;
>   	kq->queue->process = kfd_get_process(current);
>   
> +	kq->queue->mqd_mem_obj = kq->mqd_mgr->allocate_mqd(kq->mqd_mgr->dev,
> +					&kq->queue->properties);
> +	if (!kq->queue->mqd_mem_obj)
> +		goto err_allocate_mqd;
>   	retval = kq->mqd_mgr->init_mqd(kq->mqd_mgr, &kq->queue->mqd,
> -					&kq->queue->mqd_mem_obj,
> +					kq->queue->mqd_mem_obj,
>   					&kq->queue->gart_mqd_addr,
>   					&kq->queue->properties);
>   	if (retval != 0)
> @@ -165,6 +169,8 @@ static bool initialize(struct kernel_queue *kq, struct kfd_dev *dev,
>   	return true;
>   err_alloc_fence:
>   err_init_mqd:
> +	kq->mqd_mgr->uninit_mqd(kq->mqd_mgr, kq->queue->mqd, kq->queue->mqd_mem_obj);
> +err_allocate_mqd:
>   	uninit_queue(kq->queue);
>   err_init_queue:
>   	kfd_gtt_sa_free(dev, kq->wptr_mem);
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c
> index cc04b362..b4f305a 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c
> @@ -45,7 +45,7 @@ int pipe_priority_map[] = {
>   	KFD_PIPE_PRIORITY_CS_HIGH
>   };
>   
> -struct kfd_mem_obj *allocate_hiq_mqd(struct kfd_dev *dev)
> +struct kfd_mem_obj *allocate_hiq_mqd(struct kfd_dev *dev, struct queue_properties *q)
>   {
>   	struct kfd_mem_obj *mqd_mem_obj = NULL;
>   
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h
> index 66b8c67..8667990 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h
> @@ -64,8 +64,11 @@
>    */
>   extern int pipe_priority_map[];
>   struct mqd_manager {
> +	struct kfd_mem_obj*	(*allocate_mqd)(struct kfd_dev *kfd,
> +		struct queue_properties *q);
> +
>   	int	(*init_mqd)(struct mqd_manager *mm, void **mqd,
> -			struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
> +			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
>   			struct queue_properties *q);
>   
>   	int	(*load_mqd)(struct mqd_manager *mm, void *mqd,
> @@ -102,7 +105,8 @@ struct mqd_manager {
>   	uint32_t mqd_size;
>   };
>   
> -struct kfd_mem_obj *allocate_hiq_mqd(struct kfd_dev *dev);
> +struct kfd_mem_obj *allocate_hiq_mqd(struct kfd_dev *dev,
> +				struct queue_properties *q);
>   
>   struct kfd_mem_obj *allocate_sdma_mqd(struct kfd_dev *dev,
>   					struct queue_properties *q);
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c
> index e911438..bbe808d 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c
> @@ -77,9 +77,6 @@ static struct kfd_mem_obj *allocate_mqd(struct kfd_dev *kfd,
>   {
>   	struct kfd_mem_obj *mqd_mem_obj;
>   
> -	if (q->type == KFD_QUEUE_TYPE_HIQ)
> -		return allocate_hiq_mqd(kfd);
> -
>   	if (kfd_gtt_sa_allocate(kfd, sizeof(struct cik_mqd),
>   			&mqd_mem_obj))
>   		return NULL;
> @@ -88,20 +85,15 @@ static struct kfd_mem_obj *allocate_mqd(struct kfd_dev *kfd,
>   }
>   
>   static int init_mqd(struct mqd_manager *mm, void **mqd,
> -		struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
> +		struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
>   		struct queue_properties *q)
>   {
>   	uint64_t addr;
>   	struct cik_mqd *m;
>   	int retval;
> -	struct kfd_dev *kfd = mm->dev;
> -
> -	*mqd_mem_obj = allocate_mqd(kfd, q);
> -	if (!*mqd_mem_obj)
> -		return -ENOMEM;
>   
> -	m = (struct cik_mqd *) (*mqd_mem_obj)->cpu_ptr;
> -	addr = (*mqd_mem_obj)->gpu_addr;
> +	m = (struct cik_mqd *) mqd_mem_obj->cpu_ptr;
> +	addr = mqd_mem_obj->gpu_addr;
>   
>   	memset(m, 0, ALIGN(sizeof(struct cik_mqd), 256));
>   
> @@ -150,24 +142,19 @@ static int init_mqd(struct mqd_manager *mm, void **mqd,
>   }
>   
>   static int init_mqd_sdma(struct mqd_manager *mm, void **mqd,
> -			struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
> +			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
>   			struct queue_properties *q)
>   {
>   	int retval;
>   	struct cik_sdma_rlc_registers *m;
> -	struct kfd_dev *dev = mm->dev;
> -
> -	*mqd_mem_obj = allocate_sdma_mqd(dev, q);
> -	if (!*mqd_mem_obj)
> -		return -ENOMEM;
>   
> -	m = (struct cik_sdma_rlc_registers *) (*mqd_mem_obj)->cpu_ptr;
> +	m = (struct cik_sdma_rlc_registers *) mqd_mem_obj->cpu_ptr;
>   
>   	memset(m, 0, sizeof(struct cik_sdma_rlc_registers));
>   
>   	*mqd = m;
>   	if (gart_addr)
> -		*gart_addr = (*mqd_mem_obj)->gpu_addr;
> +		*gart_addr = mqd_mem_obj->gpu_addr;
>   
>   	retval = mm->update_mqd(mm, m, q);
>   
> @@ -327,7 +314,7 @@ static bool is_occupied_sdma(struct mqd_manager *mm, void *mqd,
>    */
>   
>   static int init_mqd_hiq(struct mqd_manager *mm, void **mqd,
> -		struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
> +		struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
>   		struct queue_properties *q)
>   {
>   	return init_mqd(mm, mqd, mqd_mem_obj, gart_addr, q);
> @@ -399,6 +386,7 @@ struct mqd_manager *mqd_manager_init_cik(enum KFD_MQD_TYPE type,
>   	switch (type) {
>   	case KFD_MQD_TYPE_CP:
>   	case KFD_MQD_TYPE_COMPUTE:
> +		mqd->allocate_mqd = allocate_mqd;
>   		mqd->init_mqd = init_mqd;
>   		mqd->uninit_mqd = uninit_mqd;
>   		mqd->load_mqd = load_mqd;
> @@ -411,6 +399,7 @@ struct mqd_manager *mqd_manager_init_cik(enum KFD_MQD_TYPE type,
>   #endif
>   		break;
>   	case KFD_MQD_TYPE_HIQ:
> +		mqd->allocate_mqd = allocate_hiq_mqd;
>   		mqd->init_mqd = init_mqd_hiq;
>   		mqd->uninit_mqd = uninit_mqd_hiq_sdma;
>   		mqd->load_mqd = load_mqd;
> @@ -423,6 +412,7 @@ struct mqd_manager *mqd_manager_init_cik(enum KFD_MQD_TYPE type,
>   #endif
>   		break;
>   	case KFD_MQD_TYPE_DIQ:
> +		mqd->allocate_mqd = allocate_hiq_mqd;
>   		mqd->init_mqd = init_mqd_hiq;
>   		mqd->uninit_mqd = uninit_mqd;
>   		mqd->load_mqd = load_mqd;
> @@ -435,6 +425,7 @@ struct mqd_manager *mqd_manager_init_cik(enum KFD_MQD_TYPE type,
>   #endif
>   		break;
>   	case KFD_MQD_TYPE_SDMA:
> +		mqd->allocate_mqd = allocate_sdma_mqd;
>   		mqd->init_mqd = init_mqd_sdma;
>   		mqd->uninit_mqd = uninit_mqd_hiq_sdma;
>   		mqd->load_mqd = load_mqd_sdma;
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c
> index 818944b..572cc6a 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c
> @@ -79,9 +79,6 @@ static struct kfd_mem_obj *allocate_mqd(struct kfd_dev *kfd,
>   	int retval;
>   	struct kfd_mem_obj *mqd_mem_obj = NULL;
>   
> -	if (q->type == KFD_QUEUE_TYPE_HIQ)
> -		return allocate_hiq_mqd(kfd);
> -
>   	/* From V9,  for CWSR, the control stack is located on the next page
>   	 * boundary after the mqd, we will use the gtt allocation function
>   	 * instead of sub-allocation function.
> @@ -111,20 +108,15 @@ static struct kfd_mem_obj *allocate_mqd(struct kfd_dev *kfd,
>   }
>   
>   static int init_mqd(struct mqd_manager *mm, void **mqd,
> -			struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
> +			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
>   			struct queue_properties *q)
>   {
>   	int retval;
>   	uint64_t addr;
>   	struct v9_mqd *m;
> -	struct kfd_dev *kfd = mm->dev;
>   
> -	*mqd_mem_obj = allocate_mqd(kfd, q);
> -	if (!*mqd_mem_obj)
> -		return -ENOMEM;
> -
> -	m = (struct v9_mqd *) (*mqd_mem_obj)->cpu_ptr;
> -	addr = (*mqd_mem_obj)->gpu_addr;
> +	m = (struct v9_mqd *) mqd_mem_obj->cpu_ptr;
> +	addr = mqd_mem_obj->gpu_addr;
>   
>   	memset(m, 0, sizeof(struct v9_mqd));
>   
> @@ -312,7 +304,7 @@ static int get_wave_state(struct mqd_manager *mm, void *mqd,
>   }
>   
>   static int init_mqd_hiq(struct mqd_manager *mm, void **mqd,
> -			struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
> +			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
>   			struct queue_properties *q)
>   {
>   	struct v9_mqd *m;
> @@ -345,24 +337,19 @@ static int update_mqd_hiq(struct mqd_manager *mm, void *mqd,
>   }
>   
>   static int init_mqd_sdma(struct mqd_manager *mm, void **mqd,
> -		struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
> +		struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
>   		struct queue_properties *q)
>   {
>   	int retval;
>   	struct v9_sdma_mqd *m;
> -	struct kfd_dev *dev = mm->dev;
> -
> -	*mqd_mem_obj = allocate_sdma_mqd(dev, q);
> -	if (!*mqd_mem_obj)
> -		return -ENOMEM;
>   
> -	m = (struct v9_sdma_mqd *) (*mqd_mem_obj)->cpu_ptr;
> +	m = (struct v9_sdma_mqd *) mqd_mem_obj->cpu_ptr;
>   
>   	memset(m, 0, sizeof(struct v9_sdma_mqd));
>   
>   	*mqd = m;
>   	if (gart_addr)
> -		*gart_addr = (*mqd_mem_obj)->gpu_addr;
> +		*gart_addr = mqd_mem_obj->gpu_addr;
>   
>   	retval = mm->update_mqd(mm, m, q);
>   
> @@ -462,6 +449,7 @@ struct mqd_manager *mqd_manager_init_v9(enum KFD_MQD_TYPE type,
>   	switch (type) {
>   	case KFD_MQD_TYPE_CP:
>   	case KFD_MQD_TYPE_COMPUTE:
> +		mqd->allocate_mqd = allocate_mqd;
>   		mqd->init_mqd = init_mqd;
>   		mqd->uninit_mqd = uninit_mqd;
>   		mqd->load_mqd = load_mqd;
> @@ -475,6 +463,7 @@ struct mqd_manager *mqd_manager_init_v9(enum KFD_MQD_TYPE type,
>   #endif
>   		break;
>   	case KFD_MQD_TYPE_HIQ:
> +		mqd->allocate_mqd = allocate_hiq_mqd;
>   		mqd->init_mqd = init_mqd_hiq;
>   		mqd->uninit_mqd = uninit_mqd_hiq_sdma;
>   		mqd->load_mqd = load_mqd;
> @@ -487,6 +476,7 @@ struct mqd_manager *mqd_manager_init_v9(enum KFD_MQD_TYPE type,
>   #endif
>   		break;
>   	case KFD_MQD_TYPE_DIQ:
> +		mqd->allocate_mqd = allocate_hiq_mqd;
>   		mqd->init_mqd = init_mqd_hiq;
>   		mqd->uninit_mqd = uninit_mqd;
>   		mqd->load_mqd = load_mqd;
> @@ -499,6 +489,7 @@ struct mqd_manager *mqd_manager_init_v9(enum KFD_MQD_TYPE type,
>   #endif
>   		break;
>   	case KFD_MQD_TYPE_SDMA:
> +		mqd->allocate_mqd = allocate_sdma_mqd;
>   		mqd->init_mqd = init_mqd_sdma;
>   		mqd->uninit_mqd = uninit_mqd_hiq_sdma;
>   		mqd->load_mqd = load_mqd_sdma;
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c
> index 00e6a59..431899f 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c
> @@ -80,9 +80,6 @@ static struct kfd_mem_obj *allocate_mqd(struct kfd_dev *kfd,
>   {
>   	struct kfd_mem_obj *mqd_mem_obj;
>   
> -	if (q->type == KFD_QUEUE_TYPE_HIQ)
> -		return allocate_hiq_mqd(kfd);
> -
>   	if (kfd_gtt_sa_allocate(kfd, sizeof(struct vi_mqd),
>   			&mqd_mem_obj))
>   		return NULL;
> @@ -91,20 +88,15 @@ static struct kfd_mem_obj *allocate_mqd(struct kfd_dev *kfd,
>   }
>   
>   static int init_mqd(struct mqd_manager *mm, void **mqd,
> -			struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
> +			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
>   			struct queue_properties *q)
>   {
>   	int retval;
>   	uint64_t addr;
>   	struct vi_mqd *m;
> -	struct kfd_dev *kfd = mm->dev;
> -
> -	*mqd_mem_obj = allocate_mqd(kfd, q);
> -	if (!*mqd_mem_obj)
> -		return -ENOMEM;
>   
> -	m = (struct vi_mqd *) (*mqd_mem_obj)->cpu_ptr;
> -	addr = (*mqd_mem_obj)->gpu_addr;
> +	m = (struct vi_mqd *) mqd_mem_obj->cpu_ptr;
> +	addr = mqd_mem_obj->gpu_addr;
>   
>   	memset(m, 0, sizeof(struct vi_mqd));
>   
> @@ -310,7 +302,7 @@ static int get_wave_state(struct mqd_manager *mm, void *mqd,
>   }
>   
>   static int init_mqd_hiq(struct mqd_manager *mm, void **mqd,
> -			struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
> +			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
>   			struct queue_properties *q)
>   {
>   	struct vi_mqd *m;
> @@ -342,24 +334,19 @@ static int update_mqd_hiq(struct mqd_manager *mm, void *mqd,
>   }
>   
>   static int init_mqd_sdma(struct mqd_manager *mm, void **mqd,
> -		struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
> +		struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
>   		struct queue_properties *q)
>   {
>   	int retval;
>   	struct vi_sdma_mqd *m;
> -	struct kfd_dev *dev = mm->dev;
> -
> -	*mqd_mem_obj = allocate_sdma_mqd(dev, q);
> -	if (!*mqd_mem_obj)
> -		return -ENOMEM;
>   
> -	m = (struct vi_sdma_mqd *) (*mqd_mem_obj)->cpu_ptr;
> +	m = (struct vi_sdma_mqd *) mqd_mem_obj->cpu_ptr;
>   
>   	memset(m, 0, sizeof(struct vi_sdma_mqd));
>   
>   	*mqd = m;
>   	if (gart_addr)
> -		*gart_addr = (*mqd_mem_obj)->gpu_addr;
> +		*gart_addr = mqd_mem_obj->gpu_addr;
>   
>   	retval = mm->update_mqd(mm, m, q);
>   
> @@ -458,6 +445,7 @@ struct mqd_manager *mqd_manager_init_vi(enum KFD_MQD_TYPE type,
>   	switch (type) {
>   	case KFD_MQD_TYPE_CP:
>   	case KFD_MQD_TYPE_COMPUTE:
> +		mqd->allocate_mqd = allocate_mqd;
>   		mqd->init_mqd = init_mqd;
>   		mqd->uninit_mqd = uninit_mqd;
>   		mqd->load_mqd = load_mqd;
> @@ -471,6 +459,7 @@ struct mqd_manager *mqd_manager_init_vi(enum KFD_MQD_TYPE type,
>   #endif
>   		break;
>   	case KFD_MQD_TYPE_HIQ:
> +		mqd->allocate_mqd = allocate_hiq_mqd;
>   		mqd->init_mqd = init_mqd_hiq;
>   		mqd->uninit_mqd = uninit_mqd_hiq_sdma;
>   		mqd->load_mqd = load_mqd;
> @@ -483,6 +472,7 @@ struct mqd_manager *mqd_manager_init_vi(enum KFD_MQD_TYPE type,
>   #endif
>   		break;
>   	case KFD_MQD_TYPE_DIQ:
> +		mqd->allocate_mqd = allocate_hiq_mqd;
>   		mqd->init_mqd = init_mqd_hiq;
>   		mqd->uninit_mqd = uninit_mqd;
>   		mqd->load_mqd = load_mqd;
> @@ -495,6 +485,7 @@ struct mqd_manager *mqd_manager_init_vi(enum KFD_MQD_TYPE type,
>   #endif
>   		break;
>   	case KFD_MQD_TYPE_SDMA:
> +		mqd->allocate_mqd = allocate_sdma_mqd;
>   		mqd->init_mqd = init_mqd_sdma;
>   		mqd->uninit_mqd = uninit_mqd_hiq_sdma;
>   		mqd->load_mqd = load_mqd_sdma;
_______________________________________________
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amd-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/amd-gfx

[PATCH 1/6] drm/amdkfd: Only initialize sdma vm for sdma queues

[Zeng, Oak]

Don't do the same for compute queues

Change-Id: Id5f743ca10c2b761590bfe18cab2f802d3c04d2d
Signed-off-by: Oak Zeng <Oak.Zeng@amd.com>
---
 drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
index ece35c7..e5cbf21 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
@@ -1206,7 +1206,9 @@ static int create_queue_cpsch(struct device_queue_manager *dqm, struct queue *q,
 		q->properties.is_evicted = (q->properties.queue_size > 0 &&
 					    q->properties.queue_percent > 0 &&
 					    q->properties.queue_address != 0);
-	dqm->asic_ops.init_sdma_vm(dqm, q, qpd);
+	if (q->properties.type == KFD_QUEUE_TYPE_SDMA ||
+		q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)
+		dqm->asic_ops.init_sdma_vm(dqm, q, qpd);
 	q->properties.tba_addr = qpd->tba_addr;
 	q->properties.tma_addr = qpd->tma_addr;
 	retval = mqd_mgr->init_mqd(mqd_mgr, &q->mqd, &q->mqd_mem_obj,
-- 
2.7.4

_______________________________________________
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amd-gfx@lists.freedesktop.org
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[PATCH 4/6] drm/amdkfd: Separate mqd allocation and initialization

[Zeng, Oak]

Introduce a new mqd allocation interface and split the original
init_mqd function into two functions: allocate_mqd and init_mqd.
This is preparation work to fix a circular lock dependency.

Change-Id: I26e53ee1abcdd688ad11d35b433da77e3fa1bee7
Signed-off-by: Oak Zeng <Oak.Zeng@amd.com>
---
 .../gpu/drm/amd/amdkfd/kfd_device_queue_manager.c  | 16 ++++++++---
 drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c      |  8 +++++-
 drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c       |  2 +-
 drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h       |  8 ++++--
 drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c   | 31 ++++++++--------------
 drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c    | 31 ++++++++--------------
 drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c    | 31 ++++++++--------------
 7 files changed, 59 insertions(+), 68 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
index dc34e0e..d811f63 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
@@ -321,10 +321,13 @@ static int create_queue_nocpsch(struct device_queue_manager *dqm,
 	if (retval)
 		goto out_deallocate_hqd;
 
-	retval = mqd_mgr->init_mqd(mqd_mgr, &q->mqd, &q->mqd_mem_obj,
+	q->mqd_mem_obj = mqd_mgr->allocate_mqd(mqd_mgr->dev, &q->properties);
+	if (!q->mqd_mem_obj)
+		goto out_deallocate_doorbell;
+	retval = mqd_mgr->init_mqd(mqd_mgr, &q->mqd, q->mqd_mem_obj,
 				&q->gart_mqd_addr, &q->properties);
 	if (retval)
-		goto out_deallocate_doorbell;
+		goto out_uninit_mqd;
 
 	if (q->properties.is_active) {
 
@@ -1157,10 +1160,13 @@ static int create_queue_cpsch(struct device_queue_manager *dqm, struct queue *q,
 		dqm->asic_ops.init_sdma_vm(dqm, q, qpd);
 	q->properties.tba_addr = qpd->tba_addr;
 	q->properties.tma_addr = qpd->tma_addr;
-	retval = mqd_mgr->init_mqd(mqd_mgr, &q->mqd, &q->mqd_mem_obj,
+	q->mqd_mem_obj = mqd_mgr->allocate_mqd(mqd_mgr->dev, &q->properties);
+	if (!q->mqd_mem_obj)
+		goto out_deallocate_doorbell;
+	retval = mqd_mgr->init_mqd(mqd_mgr, &q->mqd, q->mqd_mem_obj,
 				&q->gart_mqd_addr, &q->properties);
 	if (retval)
-		goto out_deallocate_doorbell;
+		goto out_deallocate_mqd;
 
 	dqm_lock(dqm);
 
@@ -1188,6 +1194,8 @@ static int create_queue_cpsch(struct device_queue_manager *dqm, struct queue *q,
 	dqm_unlock(dqm);
 	return retval;
 
+out_deallocate_mqd:
+	mqd_mgr->uninit_mqd(mqd_mgr,q->mqd, q->mqd_mem_obj);
 out_deallocate_doorbell:
 	deallocate_doorbell(qpd, q);
 out_deallocate_sdma_queue:
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c b/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c
index 1cc03b3..64c8ffe 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c
@@ -132,8 +132,12 @@ static bool initialize(struct kernel_queue *kq, struct kfd_dev *dev,
 	kq->queue->device = dev;
 	kq->queue->process = kfd_get_process(current);
 
+	kq->queue->mqd_mem_obj = kq->mqd_mgr->allocate_mqd(kq->mqd_mgr->dev,
+					&kq->queue->properties);
+	if (!kq->queue->mqd_mem_obj)
+		goto err_allocate_mqd;
 	retval = kq->mqd_mgr->init_mqd(kq->mqd_mgr, &kq->queue->mqd,
-					&kq->queue->mqd_mem_obj,
+					kq->queue->mqd_mem_obj,
 					&kq->queue->gart_mqd_addr,
 					&kq->queue->properties);
 	if (retval != 0)
@@ -165,6 +169,8 @@ static bool initialize(struct kernel_queue *kq, struct kfd_dev *dev,
 	return true;
 err_alloc_fence:
 err_init_mqd:
+	kq->mqd_mgr->uninit_mqd(kq->mqd_mgr, kq->queue->mqd, kq->queue->mqd_mem_obj);
+err_allocate_mqd:
 	uninit_queue(kq->queue);
 err_init_queue:
 	kfd_gtt_sa_free(dev, kq->wptr_mem);
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c
index 9307811..399675c 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c
@@ -25,7 +25,7 @@
 #include "amdgpu_amdkfd.h"
 #include "kfd_device_queue_manager.h"
 
-struct kfd_mem_obj *allocate_hiq_mqd(struct kfd_dev *dev)
+struct kfd_mem_obj *allocate_hiq_mqd(struct kfd_dev *dev,struct queue_properties *q)
 {
 	struct kfd_mem_obj *mqd_mem_obj = NULL;
 
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h
index 56af256a..86c34dd 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h
@@ -64,8 +64,11 @@
  */
 
 struct mqd_manager {
+	struct kfd_mem_obj*	(*allocate_mqd)(struct kfd_dev *kfd,
+		struct queue_properties *q);
+
 	int	(*init_mqd)(struct mqd_manager *mm, void **mqd,
-			struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
+			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
 			struct queue_properties *q);
 
 	int	(*load_mqd)(struct mqd_manager *mm, void *mqd,
@@ -102,7 +105,8 @@ struct mqd_manager {
 	uint32_t mqd_size;
 };
 
-struct kfd_mem_obj *allocate_hiq_mqd(struct kfd_dev *dev);
+struct kfd_mem_obj *allocate_hiq_mqd(struct kfd_dev *dev,
+				struct queue_properties *q);
 
 struct kfd_mem_obj *allocate_sdma_mqd(struct kfd_dev *dev,
 					struct queue_properties *q);
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c
index 6e8509e..d8ac078 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c
@@ -71,9 +71,6 @@ static struct kfd_mem_obj *allocate_mqd(struct kfd_dev *kfd,
 {
 	struct kfd_mem_obj *mqd_mem_obj;
 
-	if (q->type == KFD_QUEUE_TYPE_HIQ)
-		return allocate_hiq_mqd(kfd);
-
 	if (kfd_gtt_sa_allocate(kfd, sizeof(struct cik_mqd),
 			&mqd_mem_obj))
 		return NULL;
@@ -83,20 +80,15 @@ static struct kfd_mem_obj *allocate_mqd(struct kfd_dev *kfd,
 
 
 static int init_mqd(struct mqd_manager *mm, void **mqd,
-		struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
+		struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
 		struct queue_properties *q)
 {
 	uint64_t addr;
 	struct cik_mqd *m;
 	int retval;
-	struct kfd_dev *kfd = mm->dev;
-
-	*mqd_mem_obj = allocate_mqd(kfd, q);
-	if (!*mqd_mem_obj)
-		return -ENOMEM;
 
-	m = (struct cik_mqd *) (*mqd_mem_obj)->cpu_ptr;
-	addr = (*mqd_mem_obj)->gpu_addr;
+	m = (struct cik_mqd *) mqd_mem_obj->cpu_ptr;
+	addr = mqd_mem_obj->gpu_addr;
 
 	memset(m, 0, ALIGN(sizeof(struct cik_mqd), 256));
 
@@ -146,24 +138,19 @@ static int init_mqd(struct mqd_manager *mm, void **mqd,
 }
 
 static int init_mqd_sdma(struct mqd_manager *mm, void **mqd,
-			struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
+			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
 			struct queue_properties *q)
 {
 	int retval;
 	struct cik_sdma_rlc_registers *m;
-	struct kfd_dev *dev = mm->dev;
-
-	*mqd_mem_obj = allocate_sdma_mqd(dev, q);
-	if (!*mqd_mem_obj)
-		return -ENOMEM;
 
-	m = (struct cik_sdma_rlc_registers *) (*mqd_mem_obj)->cpu_ptr;
+	m = (struct cik_sdma_rlc_registers *) mqd_mem_obj->cpu_ptr;
 
 	memset(m, 0, sizeof(struct cik_sdma_rlc_registers));
 
 	*mqd = m;
 	if (gart_addr)
-		*gart_addr = (*mqd_mem_obj)->gpu_addr;
+		*gart_addr = mqd_mem_obj->gpu_addr;
 
 	retval = mm->update_mqd(mm, m, q);
 
@@ -328,7 +315,7 @@ static bool is_occupied_sdma(struct mqd_manager *mm, void *mqd,
  */
 
 static int init_mqd_hiq(struct mqd_manager *mm, void **mqd,
-		struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
+		struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
 		struct queue_properties *q)
 {
 	return init_mqd(mm, mqd, mqd_mem_obj, gart_addr, q);
@@ -402,6 +389,7 @@ struct mqd_manager *mqd_manager_init_cik(enum KFD_MQD_TYPE type,
 	switch (type) {
 	case KFD_MQD_TYPE_CP:
 	case KFD_MQD_TYPE_COMPUTE:
+		mqd->allocate_mqd = allocate_mqd;
 		mqd->init_mqd = init_mqd;
 		mqd->uninit_mqd = uninit_mqd;
 		mqd->load_mqd = load_mqd;
@@ -414,6 +402,7 @@ struct mqd_manager *mqd_manager_init_cik(enum KFD_MQD_TYPE type,
 #endif
 		break;
 	case KFD_MQD_TYPE_HIQ:
+		mqd->allocate_mqd = allocate_hiq_mqd;
 		mqd->init_mqd = init_mqd_hiq;
 		mqd->uninit_mqd = uninit_mqd_hiq_sdma;
 		mqd->load_mqd = load_mqd;
@@ -426,6 +415,7 @@ struct mqd_manager *mqd_manager_init_cik(enum KFD_MQD_TYPE type,
 #endif
 		break;
 	case KFD_MQD_TYPE_DIQ:
+		mqd->allocate_mqd = allocate_hiq_mqd;
 		mqd->init_mqd = init_mqd_hiq;
 		mqd->uninit_mqd = uninit_mqd;
 		mqd->load_mqd = load_mqd;
@@ -438,6 +428,7 @@ struct mqd_manager *mqd_manager_init_cik(enum KFD_MQD_TYPE type,
 #endif
 		break;
 	case KFD_MQD_TYPE_SDMA:
+		mqd->allocate_mqd = allocate_sdma_mqd;
 		mqd->init_mqd = init_mqd_sdma;
 		mqd->uninit_mqd = uninit_mqd_hiq_sdma;
 		mqd->load_mqd = load_mqd_sdma;
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c
index 4750338..c48a495 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c
@@ -73,9 +73,6 @@ static struct kfd_mem_obj *allocate_mqd(struct kfd_dev *kfd,
 	int retval;
 	struct kfd_mem_obj *mqd_mem_obj = NULL;
 
-	if (q->type == KFD_QUEUE_TYPE_HIQ)
-		return allocate_hiq_mqd(kfd);
-
 	/* From V9,  for CWSR, the control stack is located on the next page
 	 * boundary after the mqd, we will use the gtt allocation function
 	 * instead of sub-allocation function.
@@ -105,20 +102,15 @@ static struct kfd_mem_obj *allocate_mqd(struct kfd_dev *kfd,
 }
 
 static int init_mqd(struct mqd_manager *mm, void **mqd,
-			struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
+			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
 			struct queue_properties *q)
 {
 	int retval;
 	uint64_t addr;
 	struct v9_mqd *m;
-	struct kfd_dev *kfd = mm->dev;
 
-	*mqd_mem_obj = allocate_mqd(kfd, q);
-	if (!*mqd_mem_obj)
-		return -ENOMEM;
-
-	m = (struct v9_mqd *) (*mqd_mem_obj)->cpu_ptr;
-	addr = (*mqd_mem_obj)->gpu_addr;
+	m = (struct v9_mqd *) mqd_mem_obj->cpu_ptr;
+	addr = mqd_mem_obj->gpu_addr;
 
 	memset(m, 0, sizeof(struct v9_mqd));
 
@@ -311,7 +303,7 @@ static int get_wave_state(struct mqd_manager *mm, void *mqd,
 }
 
 static int init_mqd_hiq(struct mqd_manager *mm, void **mqd,
-			struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
+			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
 			struct queue_properties *q)
 {
 	struct v9_mqd *m;
@@ -344,24 +336,19 @@ static int update_mqd_hiq(struct mqd_manager *mm, void *mqd,
 }
 
 static int init_mqd_sdma(struct mqd_manager *mm, void **mqd,
-		struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
+		struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
 		struct queue_properties *q)
 {
 	int retval;
 	struct v9_sdma_mqd *m;
-	struct kfd_dev *dev = mm->dev;
-
-	*mqd_mem_obj = allocate_sdma_mqd(dev, q);
-	if (!*mqd_mem_obj)
-		return -ENOMEM;
 
-	m = (struct v9_sdma_mqd *) (*mqd_mem_obj)->cpu_ptr;
+	m = (struct v9_sdma_mqd *) mqd_mem_obj->cpu_ptr;
 
 	memset(m, 0, sizeof(struct v9_sdma_mqd));
 
 	*mqd = m;
 	if (gart_addr)
-		*gart_addr = (*mqd_mem_obj)->gpu_addr;
+		*gart_addr = mqd_mem_obj->gpu_addr;
 
 	retval = mm->update_mqd(mm, m, q);
 
@@ -464,6 +451,7 @@ struct mqd_manager *mqd_manager_init_v9(enum KFD_MQD_TYPE type,
 	switch (type) {
 	case KFD_MQD_TYPE_CP:
 	case KFD_MQD_TYPE_COMPUTE:
+		mqd->allocate_mqd = allocate_mqd;
 		mqd->init_mqd = init_mqd;
 		mqd->uninit_mqd = uninit_mqd;
 		mqd->load_mqd = load_mqd;
@@ -477,6 +465,7 @@ struct mqd_manager *mqd_manager_init_v9(enum KFD_MQD_TYPE type,
 #endif
 		break;
 	case KFD_MQD_TYPE_HIQ:
+		mqd->allocate_mqd = allocate_hiq_mqd;
 		mqd->init_mqd = init_mqd_hiq;
 		mqd->uninit_mqd = uninit_mqd_hiq_sdma;
 		mqd->load_mqd = load_mqd;
@@ -489,6 +478,7 @@ struct mqd_manager *mqd_manager_init_v9(enum KFD_MQD_TYPE type,
 #endif
 		break;
 	case KFD_MQD_TYPE_DIQ:
+		mqd->allocate_mqd = allocate_hiq_mqd;
 		mqd->init_mqd = init_mqd_hiq;
 		mqd->uninit_mqd = uninit_mqd;
 		mqd->load_mqd = load_mqd;
@@ -501,6 +491,7 @@ struct mqd_manager *mqd_manager_init_v9(enum KFD_MQD_TYPE type,
 #endif
 		break;
 	case KFD_MQD_TYPE_SDMA:
+		mqd->allocate_mqd = allocate_sdma_mqd;
 		mqd->init_mqd = init_mqd_sdma;
 		mqd->uninit_mqd = uninit_mqd_hiq_sdma;
 		mqd->load_mqd = load_mqd_sdma;
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c
index b550dea9..e391396 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c
@@ -73,9 +73,6 @@ static struct kfd_mem_obj *allocate_mqd(struct kfd_dev *kfd,
 {
 	struct kfd_mem_obj *mqd_mem_obj;
 
-	if (q->type == KFD_QUEUE_TYPE_HIQ)
-		return allocate_hiq_mqd(kfd);
-
 	if (kfd_gtt_sa_allocate(kfd, sizeof(struct vi_mqd),
 			&mqd_mem_obj))
 		return NULL;
@@ -84,20 +81,15 @@ static struct kfd_mem_obj *allocate_mqd(struct kfd_dev *kfd,
 }
 
 static int init_mqd(struct mqd_manager *mm, void **mqd,
-			struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
+			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
 			struct queue_properties *q)
 {
 	int retval;
 	uint64_t addr;
 	struct vi_mqd *m;
-	struct kfd_dev *kfd = mm->dev;
-
-	*mqd_mem_obj = allocate_mqd(kfd, q);
-	if (!*mqd_mem_obj)
-		return -ENOMEM;
 
-	m = (struct vi_mqd *) (*mqd_mem_obj)->cpu_ptr;
-	addr = (*mqd_mem_obj)->gpu_addr;
+	m = (struct vi_mqd *) mqd_mem_obj->cpu_ptr;
+	addr = mqd_mem_obj->gpu_addr;
 
 	memset(m, 0, sizeof(struct vi_mqd));
 
@@ -307,7 +299,7 @@ static int get_wave_state(struct mqd_manager *mm, void *mqd,
 }
 
 static int init_mqd_hiq(struct mqd_manager *mm, void **mqd,
-			struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
+			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
 			struct queue_properties *q)
 {
 	struct vi_mqd *m;
@@ -339,24 +331,19 @@ static int update_mqd_hiq(struct mqd_manager *mm, void *mqd,
 }
 
 static int init_mqd_sdma(struct mqd_manager *mm, void **mqd,
-		struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
+		struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
 		struct queue_properties *q)
 {
 	int retval;
 	struct vi_sdma_mqd *m;
-	struct kfd_dev *dev = mm->dev;
-
-	*mqd_mem_obj = allocate_sdma_mqd(dev, q);
-	if (!*mqd_mem_obj)
-		return -ENOMEM;
 
-	m = (struct vi_sdma_mqd *) (*mqd_mem_obj)->cpu_ptr;
+	m = (struct vi_sdma_mqd *) mqd_mem_obj->cpu_ptr;
 
 	memset(m, 0, sizeof(struct vi_sdma_mqd));
 
 	*mqd = m;
 	if (gart_addr)
-		*gart_addr = (*mqd_mem_obj)->gpu_addr;
+		*gart_addr = mqd_mem_obj->gpu_addr;
 
 	retval = mm->update_mqd(mm, m, q);
 
@@ -458,6 +445,7 @@ struct mqd_manager *mqd_manager_init_vi(enum KFD_MQD_TYPE type,
 	switch (type) {
 	case KFD_MQD_TYPE_CP:
 	case KFD_MQD_TYPE_COMPUTE:
+		mqd->allocate_mqd = allocate_mqd;
 		mqd->init_mqd = init_mqd;
 		mqd->uninit_mqd = uninit_mqd;
 		mqd->load_mqd = load_mqd;
@@ -471,6 +459,7 @@ struct mqd_manager *mqd_manager_init_vi(enum KFD_MQD_TYPE type,
 #endif
 		break;
 	case KFD_MQD_TYPE_HIQ:
+		mqd->allocate_mqd = allocate_hiq_mqd;
 		mqd->init_mqd = init_mqd_hiq;
 		mqd->uninit_mqd = uninit_mqd_hiq_sdma;
 		mqd->load_mqd = load_mqd;
@@ -483,6 +472,7 @@ struct mqd_manager *mqd_manager_init_vi(enum KFD_MQD_TYPE type,
 #endif
 		break;
 	case KFD_MQD_TYPE_DIQ:
+		mqd->allocate_mqd = allocate_hiq_mqd;
 		mqd->init_mqd = init_mqd_hiq;
 		mqd->uninit_mqd = uninit_mqd;
 		mqd->load_mqd = load_mqd;
@@ -495,6 +485,7 @@ struct mqd_manager *mqd_manager_init_vi(enum KFD_MQD_TYPE type,
 #endif
 		break;
 	case KFD_MQD_TYPE_SDMA:
+		mqd->allocate_mqd = allocate_sdma_mqd;
 		mqd->init_mqd = init_mqd_sdma;
 		mqd->uninit_mqd = uninit_mqd_hiq_sdma;
 		mqd->load_mqd = load_mqd_sdma;
-- 
2.7.4

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