[PATCH 1/2] drm/amdkfd: destroy mqd when destroying kernel queue

[Alex Deucher]

On Tue, Mar 10, 2015 at 9:21 AM, Oded Gabbay <oded.gabbay at amd.com> wrote:
> From: Ben Goz <ben.goz at amd.com>
>
> 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 at amd.com>
> Signed-off-by: Oded Gabbay <oded.gabbay at amd.com>

For the series:

Reviewed-by: Alex Deucher <alexander.deucher at amd.com>

> ---
>  drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c | 22 +++++++++++++---------
>  1 file changed, 13 insertions(+), 9 deletions(-)
>
> 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
> --- 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");
>  }
>
>
> --
> 1.9.1
>
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