linux-kernel - [PATCH rcu 0/11] Miscellaneous fixes for v5.19

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Message-ID: <20220418225345.GA3945110@paulmck-ThinkPad-P17-Gen-1>
Date:   Mon, 18 Apr 2022 15:53:45 -0700
From:   "Paul E. McKenney" <paulmck@...nel.org>
To:     rcu@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, kernel-team@...com,
        rostedt@...dmis.org
Subject: [PATCH rcu 0/11] Miscellaneous fixes for v5.19

Hello!

This series contains miscellaneous fixes:

1.	Clarify fill-the-gap comment in rcu_segcblist_advance().

2.	Fix rcu_preempt_deferred_qs_irqrestore() strict QS reporting.

3.	Check for jiffies going backwards.

4.	Provide boot-time timeout for CSD lock diagnostics.

5.	Add comments to final rcu_gp_cleanup() "if" statement.

6.	Print number of online CPUs in RCU CPU stall-warning messages.

7.	Fix preemption mode check on synchronize_rcu[_expedited](),
	courtesy of Frederic Weisbecker.

8.	Drop needless initialization of sdp in srcu_gp_start(), courtesy
	of Lukas Bulwahn.

9.	Check for successful spawn of ->boost_kthread_task, courtesy
	of Zqiang.

10.	rcu_sync: Fix comment to properly reflect rcu_sync_exit()
	behavior, courtesy of David Vernet.

11.	Use IRQ_WORK_INIT_HARD() to avoid rcu_read_unlock() hangs,
	courtesy of Zqiang.

						Thanx, Paul

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

 b/Documentation/admin-guide/kernel-parameters.txt |   11 ++++++++
 b/kernel/rcu/rcu_segcblist.c                      |    8 +++---
 b/kernel/rcu/srcutree.c                           |    2 -
 b/kernel/rcu/sync.c                               |    2 -
 b/kernel/rcu/tree.c                               |   10 +++++++
 b/kernel/rcu/tree.h                               |    1 
 b/kernel/rcu/tree_plugin.h                        |    1 
 b/kernel/rcu/tree_stall.h                         |    8 +++---
 b/kernel/smp.c                                    |    7 +++--
 kernel/rcu/tree.c                                 |   29 +++++++++++++++++-----
 kernel/rcu/tree_plugin.h                          |   11 ++++++--
 11 files changed, 70 insertions(+), 20 deletions(-)