[PATCH tip/core/rcu 0/4] Fix RCU priority boosting

[Paul E. McKenney]

Hello!

This series fixes a bug in which an RCU-priority-boosted task can stay
boosted for some time after it has exited its RCU read-side critical
section.  This bug arose during the RCU flavor consolidation effort.
The patches are as follows:

1.	Expedite deboost in case of deferred quiescent state.

2.	Make TREE03 use real-time tree.use_softirq setting.

3.	Run rcuo kthreads at elevated priority in CONFIG_RCU_BOOST
	kernels.

4.	Fix testing of RCU priority boosting.

						Thanx, Paul

------------------------------------------------------------------------

 kernel/rcu/rcutorture.c                                    |   36 +++++++------
 kernel/rcu/tree_plugin.h                                   |   28 +++++-----
 tools/testing/selftests/rcutorture/configs/rcu/TREE03.boot |    1 
 3 files changed, 39 insertions(+), 26 deletions(-)