[tracecompass-dev] Populating Control Flow panel with generated events

[Guido Roncarolo <guido.roncarolo@xxxxxxx>]

Hello All,

I would like first to thank you all for the amazing work done!

I am trying to use Trace Compass to display scheduling data coming from a different OS.

I would in particular like to leverage "Control flow" panel to show threads execution.

I found trace_writer.py in https://github.com/lttng/lttng-analyses.git

lttng/lttng-analyses github.com Analyses scripts for LTTng kernel and user-space traces (official repository) - lttng/lttng-analyses

that lets me  create events of type sched_switch  and  lttng_statedump_process_state

here's an example of the output of babeltrace of my generated trace

[01:00:00.058000000] (+0.000000000) lttng_statedump_process_state: { }, { tid = 2382439472, vtid = 2382439472, pid = 2382439472, vpid = 2382439472, ppid = 98, vppid = 98, name = "thd3", type = 0, mode = 5, submode = 0, status = 5, ns_level = 0, cpu_id = 0 }

[01:00:00.059000000] (+0.001000000) sched_switch: { }, { prev_comm = "test", prev_tid = 2382404352, prev_prio = 20, prev_state = 1, next_comm = "thd1", next_tid = 2382425552, next_prio = 20, cpu_id = 0 }

[01:00:00.059000000] (+0.000000000) sched_switch: { }, { prev_comm = "thd1", prev_tid = 2382425552, prev_prio = 20, prev_state = 1, next_comm = "thd2", next_tid = 2382432512, next_prio = 20, cpu_id = 0 }

I can see the event in the Histogram panel but not in the Control Flow one.

What do I need to do in order to have Trace Compass display data in Control Flow too?

Thank you very much for any input

Best Regards

Gudo