On Thu, 2014-06-26 at 17:07 -0700, Austin Schuh wrote:

If I'm reading the rt patch correctly, wq_worker_sleeping was moved
out of __schedule to sched_submit_work.  It looks like that changes
the conditions under which wq_worker_sleeping is called.  It used to
be called whenever a task was going to sleep (I think).  It looks like
it is called now if the task is going to sleep, and if the task isn't
blocked on a PI mutex (I think).

Re-entanglement does turn your killer into a happy camper, but that
patch is too lovely to just surrender without a squabble.

-Mike