Tao On 11/29/21 12:07, Daniel Bristot de Oliveira wrote: > +int osnoise_top_main(int argc, char **argv) > +{ > + struct osnoise_top_params *params; > + struct trace_instance *trace; > + struct osnoise_tool *record; > + struct osnoise_tool *tool; > + int return_value = 1; > + int retval; > + > + params = osnoise_top_parse_args(argc, argv); > + if (!params) > + exit(1); > + > + tool = osnoise_init_top(params); > + if (!tool) { > + err_msg("Could not init osnoise top\n"); > + goto out_exit; > + } > + > + retval = osnoise_top_apply_config(tool, params); > + if (retval) { > + err_msg("Could not apply config\n"); > + goto out_top; > + } > + > + trace = &tool->trace; > + > + retval = enable_osnoise(trace); > + if (retval) { > + err_msg("Failed to enable osnoise tracer\n"); > + goto out_top; > + } > + > + if (params->set_sched) { > + retval = set_comm_sched_attr("osnoise/", ¶ms->sched_param); > + if (retval) You hit this case. It is correct to get this error if one sets SCHED_DEADLINE without disabling the admission control. However, there is also a problem here. The tracer was not disabled, and the instance was not removed - so osnoise threads kept running after the error message and exit(). I will fix this on all tools for v9. Thanks for testing! --- Daniel > + osnoise_top_usage("Failed to set sched parameters\n"); > + } > +