[PATCH 1/2] drm/amdgpu: return the PCIe gen and lanes from the INFO

[Marek Olšák]

Userspace drivers can't access sysfs.

Marek

On Mon, Jan 2, 2023, 10:54 Christian König <ckoenig.leichtzumerken at gmail.com>
wrote:

> That stuff is already available as current_link_speed and
> current_link_width in sysfs.
>
> I'm a bit reluctant duplicating this information in the IOCTL interface.
>
> Christian.
>
> Am 30.12.22 um 23:07 schrieb Marek Olšák:
>
> For computing PCIe bandwidth in userspace and troubleshooting PCIe
> bandwidth issues.
>
> For example, my Navi21 has been limited to PCIe gen 1 and this is
> the first time I noticed it after 2 years.
>
> Note that this intentionally fills a hole and padding
> in drm_amdgpu_info_device.
>
> Signed-off-by: Marek Olšák <marek.olsak at amd.com>
>
> The patch is attached.
>
> Marek
>
>
>
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