drm/amdkfd: destroy mqd when destroying kernel queue

This patch adds a missing destruction of mqd, when destroying a kernel queue.
Without the destruction, there is a memory leakage when repeatedly creating and
destroying kernel queues.

Signed-off-by: Ben Goz <ben.goz@amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c b/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c
index e415a2a..c7d298e 100644 (file)
--- a/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c
@@ -44,7 +44,7 @@ static bool initialize(struct kernel_queue *kq, struct kfd_dev *dev,
        BUG_ON(!kq || !dev);
        BUG_ON(type != KFD_QUEUE_TYPE_DIQ && type != KFD_QUEUE_TYPE_HIQ);
 
-       pr_debug("kfd: In func %s initializing queue type %d size %d\n",
+       pr_debug("amdkfd: In func %s initializing queue type %d size %d\n",
                        __func__, KFD_QUEUE_TYPE_HIQ, queue_size);
 
        nop.opcode = IT_NOP;
@@ -69,12 +69,16 @@ static bool initialize(struct kernel_queue *kq, struct kfd_dev *dev,
 
        prop.doorbell_ptr = kfd_get_kernel_doorbell(dev, &prop.doorbell_off);
 
-       if (prop.doorbell_ptr == NULL)
+       if (prop.doorbell_ptr == NULL) {
+               pr_err("amdkfd: error init doorbell");
                goto err_get_kernel_doorbell;
+       }
 
        retval = kfd_gtt_sa_allocate(dev, queue_size, &kq->pq);
-       if (retval != 0)
+       if (retval != 0) {
+               pr_err("amdkfd: error init pq queues size (%d)\n", queue_size);
                goto err_pq_allocate_vidmem;
+       }
 
        kq->pq_kernel_addr = kq->pq->cpu_ptr;
        kq->pq_gpu_addr = kq->pq->gpu_addr;
@@ -165,10 +169,8 @@ err_rptr_allocate_vidmem:
 err_eop_allocate_vidmem:
        kfd_gtt_sa_free(dev, kq->pq);
 err_pq_allocate_vidmem:
-       pr_err("kfd: error init pq\n");
        kfd_release_kernel_doorbell(dev, prop.doorbell_ptr);
 err_get_kernel_doorbell:
-       pr_err("kfd: error init doorbell");
        return false;
 
 }
@@ -187,6 +189,8 @@ 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->uninit_mqd(kq->mqd, kq->queue->mqd, kq->queue->mqd_mem_obj);
+
        kfd_gtt_sa_free(kq->dev, kq->rptr_mem);
        kfd_gtt_sa_free(kq->dev, kq->wptr_mem);
        kq->ops_asic_specific.uninitialize(kq);
@@ -211,7 +215,7 @@ static int acquire_packet_buffer(struct kernel_queue *kq,
        queue_address = (unsigned int *)kq->pq_kernel_addr;
        queue_size_dwords = kq->queue->properties.queue_size / sizeof(uint32_t);
 
-       pr_debug("kfd: In func %s\nrptr: %d\nwptr: %d\nqueue_address 0x%p\n",
+       pr_debug("amdkfd: In func %s\nrptr: %d\nwptr: %d\nqueue_address 0x%p\n",
                        __func__, rptr, wptr, queue_address);
 
        available_size = (rptr - 1 - wptr + queue_size_dwords) %
@@ -296,7 +300,7 @@ struct kernel_queue *kernel_queue_init(struct kfd_dev *dev,
        }
 
        if (kq->ops.initialize(kq, dev, type, KFD_KERNEL_QUEUE_SIZE) == false) {
-               pr_err("kfd: failed to init kernel queue\n");
+               pr_err("amdkfd: failed to init kernel queue\n");
                kfree(kq);
                return NULL;
        }
@@ -319,7 +323,7 @@ static __attribute__((unused)) void test_kq(struct kfd_dev *dev)
 
        BUG_ON(!dev);
 
-       pr_err("kfd: starting kernel queue test\n");
+       pr_err("amdkfd: starting kernel queue test\n");
 
        kq = kernel_queue_init(dev, KFD_QUEUE_TYPE_HIQ);
        BUG_ON(!kq);
@@ -330,7 +334,7 @@ static __attribute__((unused)) void test_kq(struct kfd_dev *dev)
                buffer[i] = kq->nop_packet;
        kq->ops.submit_packet(kq);
 
-       pr_err("kfd: ending kernel queue test\n");
+       pr_err("amdkfd: ending kernel queue test\n");
 }