From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
To: Andi Kleen <andi@firstfloor.org>
Cc: mingo@elte.hu, linux-kernel@vger.kernel.org, rjw@sisk.pl,
dipankar@in.ibm.com, tglx@linuxtronix.de
Subject: Re: RCU hang on cpu re-hotplug with 2.6.27rc8
Date: Tue, 7 Oct 2008 09:34:01 -0700 [thread overview]
Message-ID: <20081007163401.GJ6384@linux.vnet.ibm.com> (raw)
In-Reply-To: <20081007154939.GN20740@one.firstfloor.org>
On Tue, Oct 07, 2008 at 05:49:39PM +0200, Andi Kleen wrote:
> > Hmmm... I chased out a number of these when doing rcutree.
> >
> > This with classic RCU or preemptable RCU?
>
> classic.
>
> > Could you please send me your .config file?
>
> http://halobates.de/defconfig64
Thank you! Hmmm, classic RCU, worked just fine in 2.6.27-rc7 with
Thomas's patch. I was doing random onlines and offlines in a loop,
with about 3 seconds between each operation continuously for more than
ten hours, both x86 and Power. So could you please try 2.6.27-rc7 with
Thomas's patch as follows?
http://www.rdrop.com/users/paulmck/patches/2.6.27-rc7-tglx-timer-1.patch
Failing that, I guess my next step would be to create tracing for
classic RCU to help figure out what RCU believes is preventing the
grace period from ending.
Thanx, Paul
next prev parent reply other threads:[~2008-10-07 16:34 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-06 14:12 scheduler hang on cpu re-hotplug with 2.6.27rc8 Andi Kleen
2008-10-06 23:28 ` RCU " Andi Kleen
2008-10-07 3:08 ` Paul E. McKenney
2008-10-07 7:15 ` Andi Kleen
2008-10-07 15:26 ` Paul E. McKenney
2008-10-07 15:49 ` Andi Kleen
2008-10-07 16:34 ` Paul E. McKenney [this message]
2008-10-07 21:09 ` Andi Kleen
2008-10-07 21:22 ` Paul E. McKenney
2008-10-09 1:08 ` [PATCH] rudimentary tracing for Classic RCU Paul E. McKenney
2008-10-09 6:20 ` Lai Jiangshan
2008-10-09 6:55 ` Andi Kleen
2008-10-09 7:05 ` Lai Jiangshan
2008-10-09 7:14 ` KOSAKI Motohiro
2008-10-09 7:26 ` Lai Jiangshan
2008-10-09 8:06 ` Andi Kleen
2008-10-10 11:48 ` Paul E. McKenney
2008-10-09 11:50 ` Paul E. McKenney
2008-10-09 11:50 ` Paul E. McKenney
2008-10-09 10:23 ` Frédéric Weisbecker
2008-10-09 10:53 ` Andi Kleen
2008-10-09 11:44 ` Frédéric Weisbecker
2008-10-09 11:54 ` Paul E. McKenney
2008-10-09 13:01 ` Frédéric Weisbecker
2008-10-10 3:44 ` [PATCH] v2 " Paul E. McKenney
2008-10-13 23:09 ` [PATCH] v3 " Paul E. McKenney
2008-10-14 3:53 ` Lai Jiangshan
2008-10-14 14:35 ` Paul E. McKenney
2008-10-23 11:12 ` Lai Jiangshan
2008-10-26 21:59 ` Paul E. McKenney
2008-10-27 21:50 ` Paul E. McKenney
2008-10-27 23:57 ` Paul E. McKenney
2008-10-29 1:16 ` Paul E. McKenney
2008-10-29 1:31 ` Lai Jiangshan
2008-10-30 15:52 ` Paul E. McKenney
2008-10-09 1:33 ` RCU hang on cpu re-hotplug with 2.6.27rc8 Paul E. McKenney
2008-10-09 4:56 ` Andi Kleen
2008-10-09 7:24 ` Thomas Gleixner
2008-10-09 8:22 ` Andi Kleen
2008-10-09 11:44 ` Paul E. McKenney
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