From: Borislav Petkov <bp@amd64.org>
To: "Srivatsa S. Bhat" <srivatsa.bhat@linux.vnet.ibm.com>
Cc: Alan Stern <stern@rowland.harvard.edu>,
"rjw@sisk.pl" <rjw@sisk.pl>, "bp@amd64.org" <bp@amd64.org>,
"pavel@ucw.cz" <pavel@ucw.cz>,
"len.brown@intel.com" <len.brown@intel.com>,
"tj@kernel.org" <tj@kernel.org>, "mingo@elte.hu" <mingo@elte.hu>,
"a.p.zijlstra@chello.nl" <a.p.zijlstra@chello.nl>,
"akpm@linux-foundation.org" <akpm@linux-foundation.org>,
"suresh.b.siddha@intel.com" <suresh.b.siddha@intel.com>,
"lucas.demarchi@profusion.mobi" <lucas.demarchi@profusion.mobi>,
"rusty@rustcorp.com.au" <rusty@rustcorp.com.au>,
"rdunlap@xenotime.net" <rdunlap@xenotime.net>,
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"ashok.raj@intel.com" <ashok.raj@intel.com>,
"tigran@aivazian.fsnet.co.uk" <tigran@aivazian.fsnet.co.uk>,
"tglx@linutronix.de" <tglx@linutronix.de>,
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"linux-pm@vger.kernel.org" <linux-pm@vger.kernel.org>,
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Subject: Re: [PATCH v2 0/3] Freezer, CPU hotplug, x86 Microcode: Fix task freezing failures
Date: Mon, 10 Oct 2011 18:53:43 +0200 [thread overview]
Message-ID: <20111010165343.GA29261@aftab> (raw)
In-Reply-To: <4E931018.8030904@linux.vnet.ibm.com>
On Mon, Oct 10, 2011 at 11:32:40AM -0400, Srivatsa S. Bhat wrote:
> > The seems like entirely the wrong way to go about solving this problem.
> >
> > The kernel shouldn't be responsible for making hotplug stress tests
> > exclusive with system sleep. Whoever is running those tests should be
> > smart enough to realize what's wrong if system sleep interferes with a
> > test.
Yes, agreed. And more: I'm still trying to understand why a test case
like that is relevant and needs to be fixed at all. Let me re-formulate
the question: what real world scenario(s) does the case of hibernating
_while_ off- and onlining cores cover? Or are you simply doing kernel
resiliency testing and thought that offlining cores while hibernating
might make sense?
IOW, I still fail to see a strong reason for this needing fixing.
Thanks.
--
Regards/Gruss,
Boris.
Advanced Micro Devices GmbH
Einsteinring 24, 85609 Dornach
GM: Alberto Bozzo
Reg: Dornach, Landkreis Muenchen
HRB Nr. 43632 WEEE Registernr: 129 19551
next prev parent reply other threads:[~2011-10-10 16:53 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-10 12:31 [PATCH v2 0/3] Freezer, CPU hotplug, x86 Microcode: Fix task freezing failures Srivatsa S. Bhat
2011-10-10 12:32 ` [PATCH v2 1/3] Introduce helper functions Srivatsa S. Bhat
2011-10-10 12:33 ` [PATCH v2 2/3] Mutually exclude cpu online and suspend/hibernate Srivatsa S. Bhat
2011-10-10 12:45 ` Srivatsa S. Bhat
2011-10-10 14:26 ` Peter Zijlstra
2011-10-10 15:16 ` Srivatsa S. Bhat
2011-10-11 20:32 ` Srivatsa S. Bhat
2011-10-11 21:56 ` Rafael J. Wysocki
2011-10-12 3:57 ` Srivatsa S. Bhat
2011-10-12 19:31 ` Rafael J. Wysocki
2011-10-12 21:25 ` Srivatsa S. Bhat
2011-10-12 22:09 ` Rafael J. Wysocki
2011-10-13 15:42 ` Srivatsa S. Bhat
2011-10-13 16:06 ` Tejun Heo
2011-10-13 17:01 ` Borislav Petkov
2011-10-13 17:29 ` Srivatsa S. Bhat
2011-10-19 17:29 ` Srivatsa S. Bhat
2011-10-13 18:03 ` Alan Stern
2011-10-13 19:07 ` Rafael J. Wysocki
2011-10-13 19:08 ` Rafael J. Wysocki
2011-10-10 15:25 ` Alan Stern
2011-10-10 17:00 ` Tejun Heo
2011-10-11 9:18 ` Peter Zijlstra
2011-10-11 9:37 ` Srivatsa S. Bhat
2011-10-10 12:33 ` [PATCH v2 3/3] Update documentation Srivatsa S. Bhat
2011-10-10 15:23 ` [PATCH v2 0/3] Freezer, CPU hotplug, x86 Microcode: Fix task freezing failures Alan Stern
2011-10-10 15:32 ` Srivatsa S. Bhat
2011-10-10 16:53 ` Borislav Petkov [this message]
2011-10-10 17:14 ` Pavel Machek
2011-10-10 17:30 ` Srivatsa S. Bhat
2011-10-10 17:53 ` Borislav Petkov
2011-10-10 18:08 ` tj
2011-10-10 18:34 ` Borislav Petkov
2011-10-10 18:45 ` Srivatsa S. Bhat
2011-10-10 18:53 ` tj
2011-10-10 19:00 ` Srivatsa S. Bhat
2011-10-10 20:35 ` Borislav Petkov
[not found] ` <20111010202913.GA30798@aftab>
2011-10-10 21:13 ` tj
2011-10-11 9:17 ` Peter Zijlstra
2011-10-10 16:57 ` Tejun Heo
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