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From: julie Sullivan <kernelmail.jms@gmail.com>
To: paulmck@linux.vnet.ibm.com
Cc: julie Sullivan <kernelmail.jms@gmail.com>,
	linux-kernel@vger.kernel.org, mingo@elte.hu,
	laijs@cn.fujitsu.com, dipankar@in.ibm.com,
	akpm@linux-foundation.org, mathieu.desnoyers@polymtl.ca,
	josh@joshtriplett.org, niv@us.ibm.com, tglx@linutronix.de,
	peterz@infradead.org, rostedt@goodmis.org,
	Valdis.Kletnieks@vt.edu, dhowells@redhat.com,
	eric.dumazet@gmail.com, darren@dvhart.com, patches@linaro.org,
	torvalds@linux-foundation.org
Subject: Re: PROBLEM: 3.0-rc kernels unbootable since -rc3
Date: Thu, 7 Jul 2011 20:47:13 +0100	[thread overview]
Message-ID: <201107072047.14429.kernelmail.jms@gmail.com> (raw)
In-Reply-To: <20110706212348.GO6014@linux.vnet.ibm.com>

On Wednesday 06 July 2011 22:23:48 Paul E. McKenney wrote:
> On Wed, Jul 06, 2011 at 10:10:16PM +0100, julie Sullivan wrote:
> > None of my kernels after 3.0-rc3 will boot on my Dell XPS-M1730
> > (x86-64 2-core) test box running
> > Ubuntu (Kubuntu) 11.04 (i.e. the first unbootable one was -rc4).
> > The machine freezes immediately after selecting the kernel from the
> > bootloader menu, leaving
> > me with a blank blue screen so I can't give you any log messages.
> > 
> > It bisects to the following commit:
> > 
> > commit a46e0899eec7a3069bcadd45dfba7bf67c6ed016
> > Author: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
> > Date:   Wed Jun 15 15:47:09 2011 -0700
> > 
> >     rcu: use softirq instead of kthreads except when RCU_BOOST=y
> >     
> >     This patch #ifdefs RCU kthreads out of the kernel unless RCU_BOOST=y,
> >     thus eliminating context-switch overhead if RCU priority boosting has
> >     not been configured.
> >     
> >     Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

> 
> Hello, Julie,
> 
> One approach would be to cherry-pick the following commits:
>
> f8b7fc6b514f34a51875dd48dff70d4d17a54f38 rcu: Move RCU_BOOST #ifdefs to header f
> a46e0899eec7a3069bcadd45dfba7bf67c6ed016 rcu: use softirq instead of kthreads ex
> 09223371deac67d08ca0b70bd18787920284c967 rcu: Use softirq to address performance
> 9a432736904d386cda28b987b38ba14dae960ecc rcu: Simplify curing of load woes

> 
> Another approach would be to move ahead to v3.0-rc4 or later.
> 
> 							Thanx, Paul

Hi Paul
Thanks for your prompt reply, sorry for the delay in mine (real life intervened :-)
I tried reverting those 4 commits on v3.0-rc4 and can confirm that it _does_ give me a bootable 3.0-rc4 kernel.
I'll do some more testing. If you would like me to try anything specific just let me know :-)

Cheers
Julie

  parent reply	other threads:[~2011-07-07 19:47 UTC|newest]

Thread overview: 55+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-07-06 21:10 PROBLEM: 3.0-rc kernels unbootable since -rc3 julie Sullivan
2011-07-06 21:23 ` Paul E. McKenney
2011-07-07 19:31   ` Paul E. McKenney
2011-07-07 19:47   ` julie Sullivan [this message]
2011-07-07 19:58     ` Paul E. McKenney
2011-07-07 20:28       ` julie Sullivan
2011-07-07 20:47       ` julie Sullivan
2011-07-08  0:29         ` Paul E. McKenney
2011-07-09 10:09           ` Paul E. McKenney
2011-07-10  0:45             ` julie Sullivan
2011-07-10  3:25               ` Paul E. McKenney
2011-07-10 16:38                 ` julie Sullivan
2011-07-10 17:16                   ` Paul E. McKenney
2011-07-10 17:35                     ` Paul E. McKenney
2011-07-10 20:30                       ` julie Sullivan
2011-07-10 21:46                         ` Paul E. McKenney
2011-07-10 21:50                           ` julie Sullivan
2011-07-10 23:14                             ` Paul E. McKenney
2011-07-11 16:24                               ` Konrad Rzeszutek Wilk
2011-07-11 17:13                                 ` Paul E. McKenney
2011-07-11 19:30                                   ` Konrad Rzeszutek Wilk
2011-07-11 20:15                                     ` Paul E. McKenney
2011-07-11 21:09                                       ` Konrad Rzeszutek Wilk
2011-07-12 10:55                                         ` Paul E. McKenney
2011-07-12 14:12                                           ` Konrad Rzeszutek Wilk
2011-07-12 14:49                                             ` Paul E. McKenney
2011-07-12 15:07                                               ` Paul E. McKenney
2011-07-12 15:15                                               ` Paul E. McKenney
2011-07-12 15:22                                                 ` Paul E. McKenney
2011-07-12 16:32                                                   ` PROBLEM: 3.0-rc kernels unbootable since -rc3 - under Xen, 32-bit guest only Konrad Rzeszutek Wilk
2011-07-12 16:46                                                     ` Paul E. McKenney
2011-07-12 16:03                                               ` PROBLEM: 3.0-rc kernels unbootable since -rc3 Konrad Rzeszutek Wilk
2011-07-12 16:39                                                 ` Paul E. McKenney
2011-07-12 18:01                                                   ` Konrad Rzeszutek Wilk
2011-07-12 18:59                                                     ` Paul E. McKenney
2011-07-12 19:07                                                       ` Konrad Rzeszutek Wilk
2011-07-12 20:52                                                         ` Paul E. McKenney
2011-07-12 19:10                                                       ` Peter Zijlstra
2011-07-12 19:57                                                         ` Konrad Rzeszutek Wilk
2011-07-12 20:46                                                           ` Paul E. McKenney
2011-07-12 21:04                                                             ` Julie Sullivan
2011-07-12 21:07                                                               ` Paul E. McKenney
2011-07-12 20:05                                                         ` Paul E. McKenney
2011-07-12  6:33                                     ` [Xen-devel] " Sander Eikelenboom
2011-07-12 14:05                                       ` Paul E. McKenney
     [not found]                               ` <CAAVPGOMSprJSkzziH6hJv9PweOONzsMaRZEK2ZSrV3xFBReTPw@mail.gmail.com>
     [not found]                                 ` <20110711214301.GP2245@linux.vnet.ibm.com>
2011-07-12 21:15                                   ` Julie Sullivan
2011-07-12 21:29                                     ` Paul E. McKenney
2011-07-12 21:35                                       ` Julie Sullivan
2011-07-12 21:49                                       ` Julie Sullivan
2011-07-12 22:00                                         ` Paul E. McKenney
2011-07-13  7:18                                           ` RKK
2011-07-13 15:47                                             ` Paul E. McKenney
2011-07-13 20:57                                           ` Julie Sullivan
2011-07-13 21:23                                             ` Paul E. McKenney
2011-07-07 17:28 ` julie Sullivan

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