linux-kernel - Re: [PATCH tip/core/rcu 0/11] Fixes for 3.12

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Message-ID: <20130818032417.GP28923@leaf>
Date:	Sat, 17 Aug 2013 20:24:18 -0700
From:	Josh Triplett <josh@...htriplett.org>
To:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Cc:	linux-kernel@...r.kernel.org, mingo@...e.hu, laijs@...fujitsu.com,
	dipankar@...ibm.com, akpm@...ux-foundation.org,
	mathieu.desnoyers@...icios.com, niv@...ibm.com, tglx@...utronix.de,
	peterz@...radead.org, rostedt@...dmis.org, dhowells@...hat.com,
	edumazet@...gle.com, darren@...art.com, fweisbec@...il.com,
	sbw@....edu
Subject: Re: [PATCH tip/core/rcu 0/11] Fixes for 3.12

On Sat, Aug 17, 2013 at 06:37:35PM -0700, Paul E. McKenney wrote:
> Hello!
> 
> This series contains a number of miscellaneous fixes:
> 
> 1.	Switch to expedited grace periods during hibernation operations
> 	(courtesy of Borislav Petkov).
> 
> 2.	Restrict above expediting to systems of 256 or fewer CPUs.
> 
> 3.	Make RCU debugobjects fixup actions leak callbacks rather than
> 	risking corrupting the callback lists.
> 
> 4.	Propagate above callback leaking to debugobjects's callers.
> 
> 5.	Make call_rcu() leak callbacks when debugobjects indicates an error.
> 
> 6.	Switch to expedited grace periods during suspend/resume operations
> 	(Courtesy of Bjørn Mork).
> 
> 7.	Avoid needless self-wakeups from the grace-period kthreads.
> 
> 8.	Make list_first_or_null_rcu() use list_entry_rcu() (courtesy of
> 	Tejun Heo).
> 
> 9.	Fix irq_work_queue() build error for TREE_PREEMPT_RCU for some
> 	configurations (courtesy of James Hogan).
> 
> 10.	Simplify _rcu_barrier() processing per Linus Torvalds feedback.
> 
> 11.	Avoid signed-overflow undefined behavior in time_after() and friends.

Comments on 2, 6, and 11; for the rest:
Reviewed-by: Josh Triplett <josh@...htriplett.org>
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