linux-kernel - Re: [PATCH tip/core/rcu 0/9] Preview of additional RCU changes for 3.3

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Message-ID: <20111116203947.GN2355@linux.vnet.ibm.com>
Date:	Wed, 16 Nov 2011 12:39:47 -0800
From:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	Josh Triplett <josh@...htriplett.org>
Cc:	linux-kernel@...r.kernel.org, mingo@...e.hu, laijs@...fujitsu.com,
	dipankar@...ibm.com, akpm@...ux-foundation.org,
	mathieu.desnoyers@...ymtl.ca, niv@...ibm.com, tglx@...utronix.de,
	peterz@...radead.org, rostedt@...dmis.org, Valdis.Kletnieks@...edu,
	dhowells@...hat.com, eric.dumazet@...il.com, darren@...art.com,
	patches@...aro.org
Subject: Re: [PATCH tip/core/rcu 0/9] Preview of additional RCU changes for
 3.3

On Tue, Nov 15, 2011 at 01:50:41PM -0800, Josh Triplett wrote:
> On Tue, Nov 15, 2011 at 12:27:36PM -0800, Paul E. McKenney wrote:
> > This patchset is in addition to the set previously posted (see
> > https://lkml.org/lkml/2011/11/2/363).  This new set permits the
> > reworked RCU_FAST_NO_HZ code to be used from TREE_PREEMPT_RCU,
> > allows rcutorture to shut down the system after a fixed time
> > period (useful for KVM-based testing), adds an API to
> > replace the "->pid == 0" discussed in response to the earlier
> > patch set, and applies this API where applicable.  The patches are
> > as follows:
> > 
> > 1.	Update the RCU_FAST_NO_HZ config definition to allow it to
> > 	be used in TREE_PREEMPT_RCU builds, since that is now legal.
> > 2.	Add a module parameter that permit rcutorture to shut down the
> > 	system cleanly after the test has run for the specified time.
> > 3.	Add a module parameter to allow rcutorture start running
> > 	as soon as it is initialized.
> > 4.	Add is_idle_task() API to replace open-coded tests of ->pid
> > 	against zero.
> > 5-9.	Apply the new is_idle_task() API where it makes sense.
> 
> I replied to patches 2-4 with review comments.  For the rest:
> 
> Reviewed-by: Josh Triplett <josh@...htriplett.org>

Thank you for your careful review and thoughtful comments!

							Thanx, Paul

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