linux-kernel - [PATCH tip/core/rcu 0/5] Pre-gp_seq miscellaneous fixes for v4.19

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Message-Id: <20180625230410.GA13250@linux.vnet.ibm.com>
Date:   Mon, 25 Jun 2018 16:04:10 -0700
From:   "Paul E. McKenney" <paulmck@...ux.vnet.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 0/5] Pre-gp_seq miscellaneous fixes for v4.19

Hello!

The following miscellaneous fixes come before the infamous ->gp_seq
conversion:

1.	Add debugging info to the assertion detecting tasks queued on
	the ->blkd_tasks list at unexpected times.

2.	Use the proper lockdep annotation in dump_blkd_tasks(), courtesy
	of Boqun Feng.

3.	Exclude near-simultaneous RCU CPU stall warnings, thus reducing
	the probability of interleaved (and thus inscrutable) warnings.

4.	Add diagnostics for failure to respond to a request for a new
	grace period.

5.	Make rcu_gp_cleanup() write only once to ->gp_flags.

							Thanx, Paul

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

 tree.c        |   97 ++++++++++++++++++++++++++++++++++++++++++++++------------
 tree.h        |    4 ++
 tree_plugin.h |   40 ++++++++++++++++++++++-
 3 files changed, 119 insertions(+), 22 deletions(-)