linux-kernel - Re: [RFC PATCH 0/6] RCU: Preemptible-RCU

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Message-ID: <Pine.LNX.4.58.0712131230220.3369@gandalf.stny.rr.com>
Date:	Thu, 13 Dec 2007 12:36:47 -0500 (EST)
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Gautham R Shenoy <ego@...ibm.com>
cc:	linux-kernel@...r.kernel.org, linux-rt-users@...r.kernel.org,
	Ingo Molnar <mingo@...e.hu>,
	Paul E McKenney <paulmck@...ibm.com>,
	Dipankar Sarma <dipankar@...ibm.com>,
	Ted Tso <tytso@...ibm.com>, dvhltc@...ibm.com,
	Oleg Nesterov <oleg@...sign.ru>,
	Andrew Morton <akpm@...ux-foundation.org>, bunk@...nel.org,
	Josh Triplett <josh@...edesktop.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: [RFC PATCH 0/6] RCU: Preemptible-RCU

On Thu, 13 Dec 2007, Gautham R Shenoy wrote:

>
> Currently it is based against the latest linux-2.6-sched-devel.git
>
> Awaiting your feedback!

Hi Gautham,

Thanks for posting this. I believe this is the same version of preempt RCU
as we have in the RT patch. It seems to be very stable. I ran the RT patch
version of the RCU Preempt (just the Preempt RCU patches without RT on
latest git) on a 64way box and the results seems just as good (if not
slightly better) than classic RCU!  I'll rerun this patch series on that
box and post the results.

>From what I'm seening with this, is that it is ready for mainline. These
patches should probably go into -mm and be ready for 2.6.25.  If Andrew
wants to wait for my results, I'll run them tonight.

Thanks Gautham, Paul and Dipankar for all this great work!

-- Steve

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