On Wed, Jun 22, 2022 at 12:09 AM Stefano Garzarella <sgarzare@xxxxxxxxxx> wrote:
>
> Use dev_dbg() instead of dev_err()/dev_warn() to avoid flooding the
> host with prints, when the guest driver is misbehaving.
> In this way, prints can be dynamically enabled when the vDPA block
> simulator is used to validate a driver.
>
> Suggested-by: Jason Wang <jasowang@xxxxxxxxxx>
> Signed-off-by: Stefano Garzarella <sgarzare@xxxxxxxxxx>
Acked-by: Jason Wang <jasowang@xxxxxxxxxx>
> ---
> drivers/vdpa/vdpa_sim/vdpa_sim_blk.c | 20 ++++++++++----------
> 1 file changed, 10 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim_blk.c b/drivers/vdpa/vdpa_sim/vdpa_sim_blk.c
> index 42d401d43911..a83a5c76f620 100644
> --- a/drivers/vdpa/vdpa_sim/vdpa_sim_blk.c
> +++ b/drivers/vdpa/vdpa_sim/vdpa_sim_blk.c
> @@ -76,13 +76,13 @@ static bool vdpasim_blk_handle_req(struct vdpasim *vdpasim,
> return false;
>
> if (vq->out_iov.used < 1 || vq->in_iov.used < 1) {
> - dev_err(&vdpasim->vdpa.dev, "missing headers - out_iov: %u in_iov %u\n",
> + dev_dbg(&vdpasim->vdpa.dev, "missing headers - out_iov: %u in_iov %u\n",
> vq->out_iov.used, vq->in_iov.used);
> return false;
> }
>
> if (vq->in_iov.iov[vq->in_iov.used - 1].iov_len < 1) {
> - dev_err(&vdpasim->vdpa.dev, "request in header too short\n");
> + dev_dbg(&vdpasim->vdpa.dev, "request in header too short\n");
> return false;
> }
>
> @@ -96,7 +96,7 @@ static bool vdpasim_blk_handle_req(struct vdpasim *vdpasim,
> bytes = vringh_iov_pull_iotlb(&vq->vring, &vq->out_iov, &hdr,
> sizeof(hdr));
> if (bytes != sizeof(hdr)) {
> - dev_err(&vdpasim->vdpa.dev, "request out header too short\n");
> + dev_dbg(&vdpasim->vdpa.dev, "request out header too short\n");
> return false;
> }
>
> @@ -110,7 +110,7 @@ static bool vdpasim_blk_handle_req(struct vdpasim *vdpasim,
> switch (type) {
> case VIRTIO_BLK_T_IN:
> if (!vdpasim_blk_check_range(sector, to_push)) {
> - dev_err(&vdpasim->vdpa.dev,
> + dev_dbg(&vdpasim->vdpa.dev,
> "reading over the capacity - offset: 0x%llx len: 0x%zx\n",
> offset, to_push);
> status = VIRTIO_BLK_S_IOERR;
> @@ -121,7 +121,7 @@ static bool vdpasim_blk_handle_req(struct vdpasim *vdpasim,
> vdpasim->buffer + offset,
> to_push);
> if (bytes < 0) {
> - dev_err(&vdpasim->vdpa.dev,
> + dev_dbg(&vdpasim->vdpa.dev,
> "vringh_iov_push_iotlb() error: %zd offset: 0x%llx len: 0x%zx\n",
> bytes, offset, to_push);
> status = VIRTIO_BLK_S_IOERR;
> @@ -133,7 +133,7 @@ static bool vdpasim_blk_handle_req(struct vdpasim *vdpasim,
>
> case VIRTIO_BLK_T_OUT:
> if (!vdpasim_blk_check_range(sector, to_pull)) {
> - dev_err(&vdpasim->vdpa.dev,
> + dev_dbg(&vdpasim->vdpa.dev,
> "writing over the capacity - offset: 0x%llx len: 0x%zx\n",
> offset, to_pull);
> status = VIRTIO_BLK_S_IOERR;
> @@ -144,7 +144,7 @@ static bool vdpasim_blk_handle_req(struct vdpasim *vdpasim,
> vdpasim->buffer + offset,
> to_pull);
> if (bytes < 0) {
> - dev_err(&vdpasim->vdpa.dev,
> + dev_dbg(&vdpasim->vdpa.dev,
> "vringh_iov_pull_iotlb() error: %zd offset: 0x%llx len: 0x%zx\n",
> bytes, offset, to_pull);
> status = VIRTIO_BLK_S_IOERR;
> @@ -157,7 +157,7 @@ static bool vdpasim_blk_handle_req(struct vdpasim *vdpasim,
> vdpasim_blk_id,
> VIRTIO_BLK_ID_BYTES);
> if (bytes < 0) {
> - dev_err(&vdpasim->vdpa.dev,
> + dev_dbg(&vdpasim->vdpa.dev,
> "vringh_iov_push_iotlb() error: %zd\n", bytes);
> status = VIRTIO_BLK_S_IOERR;
> break;
> @@ -167,8 +167,8 @@ static bool vdpasim_blk_handle_req(struct vdpasim *vdpasim,
> break;
>
> default:
> - dev_warn(&vdpasim->vdpa.dev,
> - "Unsupported request type %d\n", type);
> + dev_dbg(&vdpasim->vdpa.dev,
> + "Unsupported request type %d\n", type);
> status = VIRTIO_BLK_S_IOERR;
> break;
> }
> --
> 2.36.1
>
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