From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
To: julie Sullivan <kernelmail.jms@gmail.com>
Cc: 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: Sat, 9 Jul 2011 20:25:10 -0700 [thread overview]
Message-ID: <20110710032510.GG6014@linux.vnet.ibm.com> (raw)
In-Reply-To: <CAAVPGOMe6NawfkNQ1pSGYe5a1=X0z_KcD5Dn_xDX55p3K_46nQ@mail.gmail.com>
On Sun, Jul 10, 2011 at 01:45:35AM +0100, julie Sullivan wrote:
> >Very good. I have created a new jms.2011.07.07a branch in the -rcu
> >git tree at:
>
> I get my own branch! :-) (thanks for all your trouble with this.)
>
> >Hello, Julie,
>
> >Any news?
>
> Sorry for the delay (again), I have to work very late Fridays and Saturdays.
> Anyway, I have tested the six commits on my v3.0-rc4 branch (with
> f8b7fc6b514f34a5 and a46e0899eec7a3069bc reverted) and can confirm
> that they _all_ produce a bootable kernel at my end.
I am not yet sure whether this is good news or bad news, but thank
you very much for all the testing!
> Btw, you may have noticed that my config has RCU_BOOST=n?
> If I build a simple v3.0-rc4 kernel (ie one which includes the four
> original commits (f8b7fc6b514, a46e0899eec, 09223371dea and
> 9a432736904)) but with RCU_BOOST=y it _will_ boot. I didn't know if
> this was helpful or not.
OK, that certainly tells me what the next patch in the series needs
to be. The reverse of the usual experience, but so it goes.
> If it is helpful, you probably know this, but in order to get
> RCU_BOOST=y I have to change a couple of other configs - PREEMPT_RCU=y
> (previously n) and to get PREEMPT_RCU=y, my preemption model has to be
> 'Preemptible Kernel (Low-Latency Desktop)' - PREEMPT=y (instead of
> 'Voluntary Kernel Preemption (Desktop)' - PREEMPT=n which it was
> originally).
Agreed, to get RCU_BOOST, you need either TREE_PREEMPT_RCU or
TINY_PREEMPT_RCU, which requires PREEMPT.
> It's my day off tomorrow so I'll do some more testing (on -rc5 and
> -rc6) (past 1.30am here in the UK now).
I added another patch onto the jms.2011.07.07a in the -rcu git tree.
If you get a chance to test it, please let me know how it goes.
Thanx, Paul
next prev parent reply other threads:[~2011-07-10 3:25 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
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 [this message]
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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