Hello! This series contains miscellaneous fixes, perhaps most notably the rescusitation of RCU priority boosting. 1. Fix typo in comment: kthead -> kthread, courtesy of Rolf Eike Beer. 2. Remove the unused rcu_irq_exit_preempt() function. 3. Improve tree.c comments and add code cleanups, courtesy of Zhouyi Zhou. 4. Invoke rcu_spawn_core_kthreads() from rcu_spawn_gp_kthread(). 5. Add ->rt_priority and ->gp_start to show_rcu_gp_kthreads() output. 6. Add ->gp_max to show_rcu_gp_kthreads() output. 7. Explicitly flag likely false-positive report. 8. Reject RCU_LOCKDEP_WARN() false positives. 9. Add quiescent states and boost states to show_rcu_gp_kthreads() output. 10. Make RCU priority boosting work on single-CPU rcu_node structures. 11. Make show_rcu_gp_kthreads() dump rcu_node structures blocking GP. 12. Restrict RCU_STRICT_GRACE_PERIOD to at most four CPUs. 13. Make rcu_gp_cleanup() be noinline for tracing. 14. Point to documentation of ordering guarantees. 15. Create an unrcu_pointer() to remove __rcu from a pointer. 16. reconcile rcu_nocbs= and nohz_full=, courtesy of Paul Gortmaker. 17. Improve comments describing RCU read-side critical sections. 18. Remove obsolete rcu_read_unlock() deadlock commentary. 19. Add missing __releases() annotation, courtesy of Jules Irenge. Thanx, Paul ------------------------------------------------------------------------ b/include/linux/rcupdate.h | 2 - b/include/linux/rcutiny.h | 1 b/include/linux/rcutree.h | 1 b/kernel/locking/lockdep.c | 6 ++- b/kernel/rcu/Kconfig.debug | 2 - b/kernel/rcu/srcutree.c | 3 + b/kernel/rcu/tree.c | 22 ------------ b/kernel/rcu/tree.h | 1 b/kernel/rcu/tree_plugin.h | 2 - b/kernel/rcu/tree_stall.h | 8 ++-- b/kernel/rcu/update.c | 2 - b/kernel/sched/isolation.c | 4 -- b/mm/oom_kill.c | 2 - include/linux/rcupdate.h | 82 ++++++++++++++++++++++++++------------------- kernel/rcu/tree.c | 74 +++++++++++++++++++++++++--------------- kernel/rcu/tree.h | 2 - kernel/rcu/tree_plugin.h | 30 ++++------------ kernel/rcu/tree_stall.h | 21 ++++++++--- 18 files changed, 138 insertions(+), 127 deletions(-)
