Re: sched: Where to queue RT tasks on prio drop

2016-05-04 Thread Wanpeng Li
2016-05-05 4:51 GMT+08:00 Grochowalski, Matthew (GE Aviation, US) : > It looks like commit 81a44c5 (sched: Queue RT tasks to head when prio drop) > made the behavior on dropping (userspace view) more sensible but I believe > the behavior is still incorrect according to POSIX. > > POSIX (in volume

sched: Where to queue RT tasks on prio drop

2016-05-04 Thread Grochowalski, Matthew (GE Aviation, US)
It looks like commit 81a44c5 (sched: Queue RT tasks to head when prio drop) made the behavior on dropping (userspace view) more sensible but I believe the behavior is still incorrect according to POSIX. POSIX (in volume 2 section 2.8.4 Process Scheduling) specifies two different semantics for w