On Fri, Jun 28, 2019 at 10:06:17AM +0200, Juri Lelli wrote: > No synchronisation mechanism exists between the cpuset subsystem and > calls to function __sched_setscheduler(). As such, it is possible that > new root domains are created on the cpuset side while a deadline > acceptance test is carried out in __sched_setscheduler(), leading to a > potential oversell of CPU bandwidth. > > Grab cpuset_rwsem read lock from core scheduler, so to prevent > situations such as the one described above from happening. > ISTR there being a funny vs normalize_rt_tasks(); maybe mention that?
