linux-kernel - Re: [PATCH tip/core/rcu 0/17] Miscellaneous fixes for 3.17

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Message-ID: <53BCA58C.8060106@cn.fujitsu.com>
Date:	Wed, 9 Jul 2014 10:14:36 +0800
From:	Lai Jiangshan <laijs@...fujitsu.com>
To:	<paulmck@...ux.vnet.ibm.com>
CC:	<linux-kernel@...r.kernel.org>, <mingo@...nel.org>,
	<dipankar@...ibm.com>, <akpm@...ux-foundation.org>,
	<mathieu.desnoyers@...icios.com>, <josh@...htriplett.org>,
	<niv@...ibm.com>, <tglx@...utronix.de>, <peterz@...radead.org>,
	<rostedt@...dmis.org>, <dhowells@...hat.com>,
	<edumazet@...gle.com>, <dvhart@...ux.intel.com>,
	<fweisbec@...il.com>, <oleg@...hat.com>, <sbw@....edu>
Subject: Re: [PATCH tip/core/rcu 0/17] Miscellaneous fixes for 3.17

Besides patch 3, please also add my review-by for these patches:
patch 1, 2, 5, 7, 12, 13, 15, 16, 17

Reviewed-by: Lai Jiangshan <laijs@...fujitsu.com>

Thanks,
Lai

On 07/08/2014 06:37 AM, Paul E. McKenney wrote:
> Hello!
> 
> This series provides miscellaneous fixes:
> 
> 1.	Document deadlock-avoidance information in rcu_read_unlock()'s
> 	docbook comment header.
> 
> 2.	Remove obsolete references to TINY_PREEMPT_RCU.
> 
> 3.	Add deadlock explanation to local_irq_save() call in
> 	__lock_task_sighand().
> 
> 4.	Make the rcu_node arrays be static const char * const,
> 	courtesy of Fabian Frederick.
> 
> 5.	Remove redundant ACCESS_ONCE() from tick_do_timer_cpu under
> 	#ifdef CONFIG_NO_HZ_FULL.
> 
> 6.	Eliminate read-modify-write ACCESS_ONCE() calls.
> 
> 7.	Loosen __call_rcu()'s rcu_head alignment constraint to handle
> 	m68k's 16-bit alignment.
> 
> 8.	Allow post-unlock reference for rt_mutex.
> 
> 9.	Check both root and current rcu_node structures when setting up
> 	future grace periods, courtesy of Pranith Kumar.
> 
> 10.	Simplify priority boosting by putting rt_mutex in rcu_node
> 	structure.
> 
> 11.	Bind grace-period kthreads to no-NO_HZ_FULL CPUs instead of the
> 	timekeeping CPU, at least for CONFIG_NO_HZ_FULL_SYSIDLE=n.
> 
> 12.	Don't use NMIs to dump other CPUs' stacks.
> 
> 13.	Use __this_cpu_read() instead of per_cpu_ptr(), courtesy of Shan Wei.
> 
> 14.	Remove CONFIG_PROVE_RCU_DELAY.
> 
> 15.	Fix __rcu_reclaim to use true/false instead of 1/0.
> 
> 16.	Fix sparse warning in rcu_initiate_boost(), courtesy of Pranith
> 	Kumar.
> 
> 17.	Fix sparse warning in rcu_report_unblock_qs_rnp(), again courtesy
> 	of Pranith Kumar.
> 
> 							Thanx, Paul
> 
> ------------------------------------------------------------------------
> 
>  b/include/linux/init_task.h                               |    9 --
>  b/include/linux/rcupdate.h                                |   45 ++++++++--
>  b/include/linux/sched.h                                   |    6 -
>  b/include/linux/tick.h                                    |   19 ++++
>  b/init/Kconfig                                            |    2 
>  b/kernel/rcu/rcu.h                                        |    8 +
>  b/kernel/rcu/srcu.c                                       |    4 
>  b/kernel/rcu/tree.c                                       |   59 ++++++--------
>  b/kernel/rcu/tree.h                                       |    8 +
>  b/kernel/rcu/tree_plugin.h                                |   52 +++++++-----
>  b/kernel/rcu/update.c                                     |    3 
>  b/kernel/signal.c                                         |    4 
>  b/kernel/time/tick-sched.c                                |   10 ++
>  b/tools/testing/selftests/rcutorture/configs/rcu/TREE01   |    1 
>  b/tools/testing/selftests/rcutorture/configs/rcu/TREE02   |    1 
>  b/tools/testing/selftests/rcutorture/configs/rcu/TREE02-T |    1 
>  b/tools/testing/selftests/rcutorture/configs/rcu/TREE03   |    1 
>  b/tools/testing/selftests/rcutorture/configs/rcu/TREE04   |    1 
>  b/tools/testing/selftests/rcutorture/configs/rcu/TREE05   |    1 
>  b/tools/testing/selftests/rcutorture/configs/rcu/TREE06   |    1 
>  b/tools/testing/selftests/rcutorture/configs/rcu/TREE07   |    1 
>  b/tools/testing/selftests/rcutorture/configs/rcu/TREE08   |    1 
>  b/tools/testing/selftests/rcutorture/configs/rcu/TREE08-T |    1 
>  b/tools/testing/selftests/rcutorture/configs/rcu/TREE09   |    1 
>  24 files changed, 147 insertions(+), 93 deletions(-)
> 
> .
> 

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