kernel/linux.git/Documentation/RCU/Design/Memory-Ordering/TreeRCU-hotplug.svg, branch v6.12.80

rcu: Rename rcu_implicit_dynticks_qs() into rcu_watching_snap_recheck()

2024-08-15T16:00:42+00:00

The context_tracking.state RCU_DYNTICKS subvariable has been renamed to RCU_WATCHING, drop the dyntick reference and update the name of this helper to express that it rechecks rdp->watching_snap after an earlier rcu_watching_snap_save(). Signed-off-by: Valentin Schneider Reviewed-by: Frederic Weisbecker Signed-off-by: Neeraj Upadhyay

rcu: Rename dyntick_save_progress_counter() into rcu_watching_snap_save()

2024-08-15T16:00:42+00:00

The context_tracking.state RCU_DYNTICKS subvariable has been renamed to RCU_WATCHING, and the 'dynticks' prefix can be dropped without losing any meaning. Suggested-by: Frederic Weisbecker Signed-off-by: Valentin Schneider Reviewed-by: Frederic Weisbecker Signed-off-by: Neeraj Upadhyay

rcu: Standardize explicit CPU-hotplug calls

2023-10-04T20:29:45+00:00

rcu_report_dead() and rcutree_migrate_callbacks() have their headers in rcupdate.h while those are pure rcutree calls, like the other CPU-hotplug functions. Also rcu_cpu_starting() and rcu_report_dead() have different naming conventions while they mirror each other's effects. Fix the headers and propose a naming that relates both functions and aligns with the prefix of other rcutree CPU-hotplug functions. Reviewed-by: Paul E. McKenney Signed-off-by: Frederic Weisbecker

documentation: RCU grace-period memory ordering guarantees

2017-10-09T21:23:36+00:00

This commit provides text and diagrams showing how Tree RCU implements its grace-period memory ordering guarantees. Signed-off-by: Paul E. McKenney Cc: Jonathan Corbet Cc: Linus Torvalds