linux-kernel - [PATCH tip/core/rcu 0/12]

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Date:   Thu, 30 May 2019 07:52:04 -0700
From:   "Paul E. McKenney" <paulmck@...ux.ibm.com>
To:     rcu@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, 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]

Hello!

This series provides yet more cleanups and fixes for the RCU flavor
consolidation effort:

1.	Enable elimination of Tree-RCU softirq processing, courtesy of
	Sebastian Andrzej Siewior.  (More along the lines of real-time
	than consolidation, but placed here to avoid conflicts.)

2.	Check for wakeup-safe conditions in rcu_read_unlock_special().

3.	Only do rcu_read_unlock_special() wakeups if expedited.

4.	Allow rcu_read_unlock_special() to raise_softirq() if in_irq().

5.	Use irq_work to get scheduler's attention in clean context.

6.	Inline invoke_rcu_callbacks() into its sole remaining caller.

7.	Avoid self-IPI in sync_rcu_exp_select_node_cpus().

8.	Avoid self-IPI in sync_sched_exp_online_cleanup().

9.	Add assertion to check if in an interrupt, courtesy of Joel
	Fernandes.

10.	Add checks for dynticks counters in rcu_is_cpu_rrupt_from_idle(),
	courtesy of Joel Fernandes.

11.	Rename rcu_data's ->deferred_qs to ->exp_deferred_qs.

12.	Remove unused rdp local from synchronize_rcu_expedited(),
	courtesy of Jiang Biao.

							Thanx, Paul

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

 Documentation/admin-guide/kernel-parameters.txt |    6 
 include/linux/lockdep.h                         |    7 
 include/linux/sched.h                           |    2 
 kernel/rcu/tree.c                               |  179 +++++++++++++++++----
 kernel/rcu/tree.h                               |    6 
 kernel/rcu/tree_exp.h                           |   50 ++++-
 kernel/rcu/tree_plugin.h                        |  201 +++++++-----------------
 7 files changed, 267 insertions(+), 184 deletions(-)