From: "Rafael J. Wysocki" <rjw@sisk.pl>
To: Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: Re: 2.6.24-git2: Oracle 11g VKTM process enters R state on startup and is unkillable [still broken in 2.6.25-rc1]
Date: Tue, 12 Feb 2008 20:28:18 +0100
User-Agent: KMail/1.9.6 (enterprise 20070904.708012)
Cc: Ingo Molnar <mingo@elte.hu>,
       Linus Torvalds <torvalds@linux-foundation.org>,
       Alessandro Suardi <alessandro.suardi@gmail.com>,
       LKML <linux-kernel@vger.kernel.org>,
       Andrew Morton <akpm@linux-foundation.org>
References: <5a4c581d0802110820l1fcbb1ffib874f268b4ab7eae@mail.gmail.com> <200802120012.35314.rjw@sisk.pl> <1202823858.6247.26.camel@lappy>
In-Reply-To: <1202823858.6247.26.camel@lappy>
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On Tuesday, 12 of February 2008, Peter Zijlstra wrote:
> 
> On Tue, 2008-02-12 at 00:12 +0100, Rafael J. Wysocki wrote:
> > On Monday, 11 of February 2008, Ingo Molnar wrote:
> > > 
> > > * Ingo Molnar <mingo@elte.hu> wrote:
> > > 
> > > > no, they were not lost, they just didnt pass QA here (they crashed on 
> > > > a particularly hard to debug 8-way box i have) and Peter worked on 
> > > > that queue of fixes up until today to get it really correct. Could you 
> > > > check:
> > > > 
> > > >    git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched.git
> > > > 
> > > > combo patch below as well - whichever you prefer. The shortlog can be 
> > > > found below as well - but i dont yet consider this pullable, i'd like 
> > > > it to see pass a full night of randconfig tests on my test-systems.
> > > 
> > > ok, we just found the reason for the 8-way crash, the delta fix from 
> > > Peter is below if any of you have tried the previous combo patch. 
> > > Updated sched.git as well, new HEAD is 
> > > fec13e45305d69fd0bd23b30bd05a0a42cf341f8.
> > 
> > With the previous patch and this patch applied, the issue is not reproducible
> > here.
> 
> Did you enable CONFIG_RT_GROUP_SCHED (it defaults to n)?
> 
> If you didn't, could you try with it set to y?

Tested with CONFIG_RT_GROUP_SCHED set and it also works as expected.

Thanks,
Rafael
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