The massive advantage is that this is standard for all PCIe devices, so it should work vendor independent.
Christian.
Am 02.01.23 um 18:55 schrieb Marek
Olšák:
Userspace drivers can't access sysfs.
Marek
On Mon, Jan 2, 2023, 10:54 Christian König <ckoenig.leichtzumerken@xxxxxxxxx> 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@xxxxxxx>
The patch is attached.
Marek
