Linux Virtualization - Feb 2020 - [PATCH] drm/virtio: ratelimit error logging

Avoid flooding the log in case we screw up badly.

Signed-off-by: Gerd Hoffmann <kraxel at redhat.com>
---
 drivers/gpu/drm/virtio/virtgpu_vq.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/virtio/virtgpu_vq.c
b/drivers/gpu/drm/virtio/virtgpu_vq.c
index 5914e79d3429..83f22933c3bb 100644
--- a/drivers/gpu/drm/virtio/virtgpu_vq.c
+++ b/drivers/gpu/drm/virtio/virtgpu_vq.c
@@ -212,9 +212,9 @@ void virtio_gpu_dequeue_ctrl_func(struct work_struct *work)
 			if (resp->type >= cpu_to_le32(VIRTIO_GPU_RESP_ERR_UNSPEC)) {
 				struct virtio_gpu_ctrl_hdr *cmd;
 				cmd = (struct virtio_gpu_ctrl_hdr *)entry->buf;
-				DRM_ERROR("response 0x%x (command 0x%x)\n",
-					  le32_to_cpu(resp->type),
-					  le32_to_cpu(cmd->type));
+				DRM_ERROR_RATELIMITED("response 0x%x (command 0x%x)\n",
+						      le32_to_cpu(resp->type),
+						      le32_to_cpu(cmd->type));
 			} else
 				DRM_DEBUG("response 0x%x\n", le32_to_cpu(resp->type));
 		}
-- 
2.18.1

On Wed, Feb 5, 2020 at 2:26 AM Gerd Hoffmann <kraxel at redhat.com>
wrote:
>
> Avoid flooding the log in case we screw up badly.
>
> Signed-off-by: Gerd Hoffmann <kraxel at redhat.com>
Reviewed-by: Chia-I Wu <olvaffe at gmail.com>
> ---
>  drivers/gpu/drm/virtio/virtgpu_vq.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/virtio/virtgpu_vq.c
b/drivers/gpu/drm/virtio/virtgpu_vq.c
> index 5914e79d3429..83f22933c3bb 100644
> --- a/drivers/gpu/drm/virtio/virtgpu_vq.c
> +++ b/drivers/gpu/drm/virtio/virtgpu_vq.c
> @@ -212,9 +212,9 @@ void virtio_gpu_dequeue_ctrl_func(struct work_struct
*work)
>                         if (resp->type >=
cpu_to_le32(VIRTIO_GPU_RESP_ERR_UNSPEC)) {
>                                 struct virtio_gpu_ctrl_hdr *cmd;
>                                 cmd = (struct virtio_gpu_ctrl_hdr
*)entry->buf;
> -                               DRM_ERROR("response 0x%x (command
0x%x)\n",
> -                                         le32_to_cpu(resp->type),
> -                                         le32_to_cpu(cmd->type));
> +                               DRM_ERROR_RATELIMITED("response 0x%x
(command 0x%x)\n",
> +                                                    
le32_to_cpu(resp->type),
> +                                                    
le32_to_cpu(cmd->type));
>                         } else
>                                 DRM_DEBUG("response 0x%x\n",
le32_to_cpu(resp->type));
>                 }
> --
> 2.18.1
>