Danylo Piliaiev 1989e1e6d8 turnip/perfetto: handle gpu timestamps being non-monotonic
Perfetto requires time in clock snaphots to be monotonic, otherwise
the clock would be excluded.
GPU timestamps start from zero after every suspend-resume cycle
which makes them non-monotonic.

As a solution on msm we check whether GPU was just resumed and
remember previous highest timestamp to then add it to the next
timestamps.

If the functionality to get whether gpu is resumed is unavailable
or doesn't work - we fallback to a check for a discontinuity
in timestamps. For kgsl we always use fallback.

Fixes renderstage timeline disappearing in AGI.

Or you could avoid the issue altogether by preventing GPU from going to
sleep by increasing auto suspend delay e.g.:

  echo 5000 > /sys/devices/platform/soc\@0/3d00000.gpu/power/autosuspend_delay_ms

Signed-off-by: Danylo Piliaiev <dpiliaiev@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14391>
2022-01-27 18:59:43 +00:00
2022-01-19 15:17:17 +00:00
2021-10-13 20:52:19 +01:00

`Mesa <https://mesa3d.org>`_ - The 3D Graphics Library
======================================================


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