add tst_check_rt_group_sched_support for trace_sched ?
trace_sched -c 1 will take the follow
main(): sched_setscheduler(): Operation not permitted
main(): sched_setscheduler(): Operation not permitted
main(): sched_setscheduler(): Operation not permitted
......
main(): sched_setscheduler(): Operation not permitted
main(): sched_setscheduler(): Operation not permitted
thread [0] - process exited with exit code -1