Performance counter are somewhat special on Vivante GPUs. It is not possible to read them via cmd stream but only from the CPU/kernel. This needs some extra work in the kernel and the user space.
The final goal is to have per-draw performance counter values for detailed analysis of performance problems and a way to sample performance counters in a cyclic way for perfetto or some kind of gpu-top tool. GPU load values are also quite special and might be of interest. Overall there is quite some work to be done to get it up and running.
I would talk about the problems and the solutions I came up with.
|GSoC, EVoC or Outreachy||No|
|Code of Conduct||Yes|