Hi Greg, I've gone through `git-log v3.4.. kernel/sched/rt.c`, and I believe those commits need to be backported to 3.4 stable. 454c79999f7eaedcdf4c15c449e43902980cbdf5 ("sched/rt: Fix SCHED_RR across cgroups") e221d028bb08b47e624c5f0a31732c642db9d19a ("sched,rt: fix isolated CPUs leaving root_task_group indefinitely throttled") a4c96ae319b8047f62dedbe1eac79e321c185749 ("sched: Unthrottle rt runqueues in __disable_runtime()") 57d2aa00dcec67afa52478730f2b524521af14fb ("sched/rt: Avoid updating RT entry timeout twice within one tick period" The last two can't be applied cleanly, and I've made patches for them. -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html