linux-kernel - Re: [GIT PULL rcu/next] RCU commits for 4.9

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Message-ID: <20160916070933.GA6001@gmail.com>
Date:   Fri, 16 Sep 2016 09:09:33 +0200
From:   Ingo Molnar <mingo@...nel.org>
To:     "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Cc:     linux-kernel@...r.kernel.org, chris@...is-wilson.co.uk,
        dingtianhong@...wei.com, szhang@...vell.com,
        paul.gortmaker@...driver.com, bigeasy@...utronix.de,
        sj38.park@...il.com
Subject: Re: [GIT PULL rcu/next] RCU commits for 4.9


* Paul E. McKenney <paulmck@...ux.vnet.ibm.com> wrote:

> Hello, Ingo,
> 
> This series contains the following changes:
> 
> 1.	Documentation updates, again just some simple changes.
> 	Yes, I am getting behind on design-level updates.  :-/
> 
> 	http://lkml.kernel.org/g/20160822151413.GA6337@linux.vnet.ibm.com
> 
> 2.	Expedited grace-period changes, most notably avoiding having
> 	user threads drive expedited grace periods, using a workqueue
> 	instead.
> 
> 	http://lkml.kernel.org/g/20160822152239.GA7153@linux.vnet.ibm.com
> 
> 3.	Miscellaneous fixes, including a performance fix for lists
> 	that was sent with the lists modifications (second URL below).
> 	I am holding the lists debug-enhancement modifications for the
> 	next merge window, as there doesn't seem to be much energy
> 	around providing fixes, and I cannot supply that energy for
> 	this merge window.  (I will make time as needed during the next
> 	merge window.)
> 
> 	http://lkml.kernel.org/g/20160822152956.GA8160@linux.vnet.ibm.com
> 	http://lkml.kernel.org/g/20160822154501.GA10364@linux.vnet.ibm.com
> 
> 4.	CPU hotplug updates, most notably providing exact CPU-online
> 	tracking for RCU.  This will in turn allow removal of the
> 	checks supporting RCU's prior heuristic that was based on the
> 	assumption that CPUs would take no longer than one jiffy to
> 	come online.
> 
> 	http://lkml.kernel.org/g/20160822153825.GA9242@linux.vnet.ibm.com
> 
> 5.	Torture-test updates.
> 
> 	http://lkml.kernel.org/g/20160822155423.GA11367@linux.vnet.ibm.com
> 
> All of these changes have been subjected to 0day Test Robot and -next
> testing, and are available in the git repository at:
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git for-mingo
> 
> for you to fetch changes up to d74b62bc3241af8ebf5141f5b12e89d9d7f341e1:
> 
>   Merge branches 'doc.2016.08.22c', 'exp.2016.08.22c', 'fixes.2016.09.14a', 'hotplug.2016.08.22c' and 'torture.2016.08.22c' into HEAD (2016-09-14 12:58:49 -0700)
> 
> ----------------------------------------------------------------
> Chris Wilson (1):
>       list: Expand list_first_entry_or_null()
> 
> Ding Tianhong (1):
>       rcu: Fix soft lockup for rcu_nocb_kthread
> 
> Jisheng Zhang (1):
>       rcu: Use rcu_gp_kthread_wake() to wake up grace period kthreads
> 
> Paul E. McKenney (13):
>       documentation: Record reason for rcu_head two-byte alignment
>       rcu: Consolidate expedited grace period machinery
>       rcu: Drive expedited grace periods from workqueue
>       rcu: Stop disabling expedited RCU CPU stall warnings
>       rcu: Make expedited RCU CPU stall warnings respond to controls
>       rcu: Exclude RCU-offline CPUs from expedited grace periods
>       rcu: Use RCU's online-CPU state for expedited IPI retry
>       sched: Make wake_up_nohz_cpu() handle CPUs going offline
>       rcu: Avoid redundant quiescent-state chasing
>       rcu: Provide exact CPU-online tracking for RCU
>       torture: Convert torture_shutdown() to hrtimer
>       torture: Add task state to writer-task stall printk()s
>       Merge branches 'doc.2016.08.22c', 'exp.2016.08.22c', 'fixes.2016.09.14a', 'hotplug.2016.08.22c' and 'torture.2016.08.22c' into HEAD
> 
> Paul Gortmaker (1):
>       rcu: Don't use modular infrastructure in non-modular code
> 
> Sebastian Andrzej Siewior (2):
>       cpu/hotplug: Get rid of CPU_STARTING reference
>       rcutorture: Convert to hotplug state machine
> 
> SeongJae Park (4):
>       rcutorture: Remove outdated config option description
>       rcutorture: Print out barrier error as document says
>       rcuperf: Consistently insert space between flag and message
>       torture: TOROUT_STRING(): Insert a space between flag and message
> 
>  .../RCU/Design/Requirements/Requirements.html      |  22 ++++
>  Documentation/RCU/torture.txt                      |  15 ---
>  include/linux/list.h                               |   7 +-
>  include/linux/rcupdate.h                           |   1 +
>  include/linux/torture.h                            |   2 +-
>  kernel/cpu.c                                       |   1 +
>  kernel/rcu/rcuperf.c                               |   7 +-
>  kernel/rcu/rcutorture.c                            |  62 ++++-------
>  kernel/rcu/tree.c                                  |  44 ++++++--
>  kernel/rcu/tree.h                                  |   1 +
>  kernel/rcu/tree_exp.h                              | 124 +++++++++++++--------
>  kernel/rcu/tree_plugin.h                           |   1 +
>  kernel/rcu/tree_trace.c                            |   7 +-
>  kernel/rcu/update.c                                |   3 +-
>  kernel/sched/core.c                                |   7 ++
>  kernel/torture.c                                   |  27 +++--
>  16 files changed, 193 insertions(+), 138 deletions(-)

Pulled, thanks a lot Paul!

	Ingo