[PATCH tip/core/rcu 0/10] Dyntick changes for v4.20/v5.0

From: Paul E. McKenney
Date: Wed Aug 29 2018 - 19:07:46 EST


Now that there is only one rcu_data structure per CPU, there isn't a whole
lot of point in maintaining a separate per-CPU rcu_dynticks structure.
This series therefore merges the rcu_dynticks structure into the rcu_data

1. Remove unused rcu_dynticks_snap() from Tiny RCU.

2. Merge rcu_dynticks structure into rcu_data structure, but
continue using the rcu_dynticks structure's fields.

3-8. Change the code to use the fields in the rcu_data structure
instead of those in the rcu_dynticks structure.

9. Remove the now-obsolete ->dynticks_fqs and ->cond_resched_completed
fields from the rcu_data structure.

10. Convert rcu_state.ofl_lock to raw_spinlock_t to make -rt feel
better, courtesy of Mike Galbraith.

Thanx, Paul


include/linux/rcutiny.h | 6 -
kernel/rcu/tree.c | 196 ++++++++++++++++++++++-------------------------
kernel/rcu/tree.h | 82 +++++++------------
kernel/rcu/tree_exp.h | 8 -
kernel/rcu/tree_plugin.h | 69 +++++++---------
5 files changed, 163 insertions(+), 198 deletions(-)