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panvk: add more utrace tracepoints

Chia-I Wu requested to merge olv/mesa:panvk-utrace-followup into main

What does this MR do and why?

This is a follow-up to utrace support to add more GPU tracepoints. Here is an example for vkcube-wayland. The GPU tracepoints appear in Misc Global Tracks.

Most of the tracepoints map to high-level api calls:

  • meta ops
  • render passes
  • dispatches
  • barriers

There is also sync_wait that maps to low-level cs_sync{32,64}_wait. But I only use it for wait_finish_tiling at the moment.

We can always add/remove/modify tracepoints as we see fit. There can also be CPU tracepoints or debug markers, but they are for the future.

--

Perfetto can be tedious to set up. There is Perfetto Tracing. And here is how I use it:

  • follow build instructions to cross-compile perfetto for the target device
    • or simply get prebuilt from https://commondatastorage.googleapis.com/perfetto-luci-artifacts/v48.1/linux-arm64/tracebox
  • scp tracebox to the target device and open 2 terminals
    • one runs ./tracebox traced, the daemon
    • another runs sudo ./tracebox traced_probes --reset-ftrace, to collect ftrace events
  • run vkcube in another terminal with MESA_GPU_TRACES=perfetto
  • run ./tracebox perfetto -c system.cfg --txt -o out.trace to start tracing
    • system.cfg is shipped with mesa
    • it stops tracing after 7s automatically, or upon Ctrl-C
  • navigate to https://ui.perfetto.dev/ to view the trace

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