linux-kernel - [PATCH tip/core/rcu 0/11] Preemptible-RCU updates for v5.6

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Date:   Mon, 9 Dec 2019 20:26:06 -0800
From:   "Paul E. McKenney" <paulmck@...nel.org>
To:     rcu@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, kernel-team@...com, 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 0/11] Preemptible-RCU updates for v5.6

Hello!

This series contains preemptible-RCU updates for v5.6:

1.	Fix dump_tree hierarchy print always active, courtesy of
	Stefan Reiter.

2.	Avoid data-race in rcu_gp_fqs_check_wake(), courtesy of Eric
	Dumazet.

3.	Use lockdep rather than comment to enforce lock held.

4.	Make PREEMPT_RCU be a modifier to TREE_RCU, courtesy of
	Lai Jiangshan.

5.	Use CONFIG_PREEMPTION where appropriate, courtesy of Sebastian
	Andrzej Siewior.

6.	Rename some instances of CONFIG_PREEMPTION to CONFIG_PREEMPT_RCU,
	courtesy of Lai Jiangshan.

7.	Clear .exp_hint only when deferred quiescent state has been
	reported, courtesy of Lai Jiangshan.

8.	Clear ->rcu_read_unlock_special only once, courtesy of Lai
	Jiangshan.

9.	Use READ_ONCE() for ->expmask in rcu_read_unlock_special().

10.	Provide wrappers for uses of ->rcu_read_lock_nesting, courtesy
	of Lai Jiangshan.

11.	Avoid tick_dep_set_cpu() misordering.

							Thanx, Paul

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

 include/linux/rcupdate.h   |    8 +--
 include/trace/events/rcu.h |    4 -
 kernel/rcu/Kconfig         |   17 +++---
 kernel/rcu/Makefile        |    1 
 kernel/rcu/rcu.h           |    2 
 kernel/rcu/rcutorture.c    |    2 
 kernel/rcu/srcutiny.c      |    2 
 kernel/rcu/tree.c          |   20 ++++---
 kernel/rcu/tree_exp.h      |    6 +-
 kernel/rcu/tree_plugin.h   |  118 +++++++++++++++++++++++++--------------------
 kernel/rcu/tree_stall.h    |    6 +-
 kernel/rcu/update.c        |    2 
 kernel/sysctl.c            |    2 
 13 files changed, 105 insertions(+), 85 deletions(-)