On 11/10/22 18:22, Daniel Bristot de Oliveira wrote: > On 10/11/22 18:17, Valentin Schneider wrote: >> Thinking out loud, it makes way more sense to record a cpumask in the >> tracepoint, but perhaps we could have a postprocessing step to transform >> those into N events each targeting a single CPU? > > My approach on the tracers/rtla is to make the simple things in kernel, and beautify > things in user-space. > > You could keep the tracepoint as a mask, and then make it pretty, like cpus=3-5,8 > in user-space. For example with a trace-cmd/perf loadable plugin, libtracefs helper. > That's a nice idea, the one downside I see is that means registering an event handler for all events with cpumasks rather than directly targeting cpumask fields, but that doesn't look too horrible. I'll dig a bit in that direction. > For rtla I was thinking to make a new tool to parse them. and make it pretty there. > > -- Daniel
