with this patch tuna shows properly SCHED_DEADLINE:

[indy@localhost ~]$ tuna -CP | grep deadline 8855 OTHER 0 0,1,2,3 202217 1402 cyclicdeadline 8856 DEADLINE 0 0,1,2,3 1 2033276 cyclicdeadline [indy@localhost ~]$ chrt -p 8856 pid 8856's current scheduling policy: SCHED_DEADLINE pid 8856's current scheduling priority: 0 pid 8856's current runtime/deadline/period parameters: 600000/1000000/1000000

Jiri Kastner (1): schedutils.c: added support for SCHED_DEADLINE

python-schedutils/schedutils.c | 8 ++++++++ 1 file changed, 8 insertions(+)