linux-kernel - Re: [PATCH v5 0/4] pseries: Add cede support for cpu-offline

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Date:	Wed, 11 Nov 2009 22:45:17 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Benjamin Herrenschmidt <benh@....ibm.com>
Cc:	Gautham R Shenoy <ego@...ibm.com>,
	Nathan Fontenot <nfont@...tin.ibm.com>,
	Balbir Singh <balbir@...ibm.com>, linux-kernel@...r.kernel.org,
	Dipankar Sarma <dipankar@...ibm.com>,
	Arun R Bharadwaj <arun@...ux.vnet.ibm.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Vaidyanathan Srinivasan <svaidy@...ux.vnet.ibm.com>,
	linuxppc-dev@...ts.ozlabs.org, Ingo Molnar <mingo@...e.hu>
Subject: Re: [PATCH v5 0/4] pseries: Add cede support for cpu-offline

On Thu, 2009-11-12 at 08:35 +1100, Benjamin Herrenschmidt wrote:
> On Wed, 2009-11-11 at 14:25 +0100, Peter Zijlstra wrote:
> > On Fri, 2009-10-30 at 10:52 +0530, Gautham R Shenoy wrote:
> > 
> > > Gautham R Shenoy (4):
> > >       pseries: Serialize cpu hotplug operations during deactivate Vs deallocate
> > >       pseries: Add code to online/offline CPUs of a DLPAR node.
> > >       pSeries: Add hooks to put the CPU into an appropriate offline state
> > >       pSeries: extended_cede_processor() helper function.
> > > 
> > > 
> > >  Documentation/cpu-hotplug.txt                   |    6 +
> > >  arch/powerpc/include/asm/lppaca.h               |    9 +
> > >  arch/powerpc/platforms/pseries/dlpar.c          |  129 ++++++++++++++++
> > >  arch/powerpc/platforms/pseries/hotplug-cpu.c    |  182 ++++++++++++++++++++++-
> > >  arch/powerpc/platforms/pseries/offline_states.h |   18 ++
> > >  arch/powerpc/platforms/pseries/plpar_wrappers.h |   22 +++
> > >  arch/powerpc/platforms/pseries/smp.c            |   19 ++
> > >  arch/powerpc/xmon/xmon.c                        |    3 
> > >  drivers/base/cpu.c                              |    2 
> > >  include/linux/cpu.h                             |   13 ++
> > >  10 files changed, 387 insertions(+), 16 deletions(-)
> > >  create mode 100644 arch/powerpc/platforms/pseries/offline_states.h
> > 
> > Not quite sure how you solved the DLPAR communication but since pretty
> > much everything is under arch/powerpc/ I really don't have much to say.
> 
> Allright. I was hoping to have your ack for the drivers/base/cpu.c
> change :-)

Sure.

Acked-by: Peter Zijlstra <a.p.zijlstra@...llo.nl>

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