How can I enable tracing for an MLIR pass (to load into a tool like perfetto)?

I am currently using the command:

./bin/triton-opt  <file_name> -tritongpu-accelerate-matmul --log-actions-to -

to debug a pass.

From this meeting, I can see that MLIR has tracing infrastructure. But, how can I trigger it to get a trace?

./bin/triton-opt --help | grep trace

Doesn’t give me any obvious hints.