linux-kernel - [PATCH tip/core/rcu 0/12] RCU flavor consolidation cleanups for v5.1

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Message-Id: <20190109211830.GA30595@linux.ibm.com>
Date:   Wed, 9 Jan 2019 13:18:30 -0800
From:   "Paul E. McKenney" <paulmck@...ux.ibm.com>
To:     linux-kernel@...r.kernel.org
Cc:     mingo@...nel.org, jiangshanlai@...il.com, dipankar@...ibm.com,
        akpm@...ux-foundation.org, mathieu.desnoyers@...icios.com,
        josh@...htriplett.org, tglx@...utronix.de, peterz@...radead.org,
        rostedt@...dmis.org, dhowells@...hat.com, edumazet@...gle.com,
        fweisbec@...il.com, oleg@...hat.com, joel@...lfernandes.org
Subject: [PATCH tip/core/rcu 0/12] RCU flavor consolidation cleanups for v5.1

Hello!

This series contains additional cleanups for RCU flavor consolidation:

1-2.	Replace scheduler _sched() APIs with _rcu() counterparts.

3.	Renaming and commenting changes due to only one rcuo kthread
	per CPU.

4.	Make expedited IPI handler return after handling critical section.
	This is a maintainability and performance change.

5.	Inline force_quiescent_state() into rcu_force_quiescent_state().

6.	Eliminate RCU_BH_FLAVOR and RCU_SCHED_FLAVOR.

7.	Inline rcu_kthread_do_work() into its sole remaining caller.

8.	Determine expedited-GP IPI handler at build time.

9.	Consolidate PREEMPT and !PREEMPT synchronize_rcu_expedited().

10.	Consolidate PREEMPT and !PREEMPT synchronize_rcu().

11.	Inline _synchronize_rcu_expedited() into synchronize_rcu_expedited().

12.	Discard separate per-CPU callback counts.

							Thanx, Paul

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

 Documentation/RCU/Design/Expedited-Grace-Periods/ExpSchedFlow.svg             |   18 
 Documentation/RCU/Design/Expedited-Grace-Periods/Expedited-Grace-Periods.html |   26 -
 Documentation/RCU/stallwarn.txt                                               |   15 
 kernel/rcu/rcu.h                                                              |    2 
 kernel/rcu/tree.c                                                             |  123 +++--
 kernel/rcu/tree.h                                                             |    9 
 kernel/rcu/tree_exp.h                                                         |  244 ++++------
 kernel/rcu/tree_plugin.h                                                      |  129 -----
 kernel/sched/cpufreq.c                                                        |    4 
 kernel/sched/cpufreq_schedutil.c                                              |    2 
 kernel/sched/sched.h                                                          |    2 
 kernel/sched/topology.c                                                       |    4 
 12 files changed, 237 insertions(+), 341 deletions(-)