kms/page-flip: Add a debug print with page flip event timings
This can be useful when debugging issues related to page flip timings, and makes it easy to identify cases where the timing information is missing from page flip events (both sec
and usec
are 0).
I used these debug prints when reporting the following AMDGPU issue: https://gitlab.freedesktop.org/drm/amd/-/issues/2030
Edited by Dor Askayo