Hello! This series provides miscellaneous fixes:
1. Make non-production PREEMPT cond_resched() help Tasks RCU. 2. Inline rcu_preempt_do_callback() into its sole caller, courtesy of Byungchul Park. 3. Don't allocate rcu_nocb_mask if no one needs it, for example, in the case where there are no no-CBs CPUs. 4. Call wake_nocb_leader_defer() with 'FORCE' when nocb_q_count is high, courtesy of Byungchul Park. 5. Remove deprecated RCU debugfs tracing code, courtesy of Byungchul Park. 6. Rename cond_resched_rcu_qs() to cond_resched_tasks_rcu_qs() in order to reflect its actual current use case. 7. Eliminate unused cond_resched_softirq() macro. 8. Move __rcu_read_lock() and __rcu_read_unlock() to tree_plugin.h. 9. Update rcu_bind_gp_kthread() header comment. 10. Declare rcu_eqs_special_set() in public header, courtesy of Yury Norov. 11. Add cleanup_srcu_struct_quiesced(). 12. Avoid flush dependency in delete controller flow, which is included in this series due to its need for the shiny new cleanup_srcu_struct_quiesced() function. 13. Exclude near-simultaneous RCU CPU stall warnings. 14. Add leaf-node macros to simplify code. 15. Ensure whatisRCU.txt actually says what RCU is, courtesy of Paul Gortmaker. 16-21: Debugging commits that may or may not be submitted for inclusion, depending on how helpful they prove to be. 22: Use the proper lockdep annotation in dump_blkd_tasks(), courtesy of Boqun Feng. Thanx, Paul ------------------------------------------------------------------------ Documentation/RCU/whatisRCU.txt | 2 drivers/nvme/host/core.c | 2 include/linux/rcupdate.h | 4 - include/linux/rcutree.h | 1 include/linux/sched.h | 14 ++-- include/linux/srcu.h | 36 ++++++++++++ kernel/rcu/rcu.h | 11 ++- kernel/rcu/rcuperf.c | 2 kernel/rcu/rcutorture.c | 7 ++ kernel/rcu/srcutiny.c | 9 ++- kernel/rcu/srcutree.c | 30 +++++----- kernel/rcu/tree.c | 76 ++++++++++++++------------ kernel/rcu/tree.h | 8 -- kernel/rcu/tree_exp.h | 13 +--- kernel/rcu/tree_plugin.h | 116 +++++++++++++++++++++++++++++++--------- kernel/rcu/update.c | 50 ----------------- kernel/sched/core.c | 14 ---- kernel/softirq.c | 3 - kernel/torture.c | 2 kernel/trace/trace_benchmark.c | 4 - 20 files changed, 232 insertions(+), 172 deletions(-)