Re: [PATCH 00/32] [RFC] nohz/cpuset: Start discussions on nohz CPUs

[Frederic Weisbecker]

2012/11/5 Christoph Lameter <cl@xxxxxxxxx>:
> On Fri, 2 Nov 2012, Paul E. McKenney wrote:
>
>> On Fri, Nov 02, 2012 at 04:51:50PM -0400, Steven Rostedt wrote:
>> > On Fri, 2012-11-02 at 13:41 -0700, Paul E. McKenney wrote:
>> >
>> > > The no-CBs mask would be read-only for some time -- changed only at
>> > > boot.  Longer term, I hope to allow run-time modification, but...
>> >
>> > but what? You're not looking to retire already are you? ;-)
>>
>> Not for a few decades.  ;-)
>>
>> But let's add the no-CBs mask to sysfs when I add the ability to run-time
>> modify that mast.
>
> Well we are creating a user ABi with the boot time option. It would be
> best to get it right out of the door.

I believe that a static setting through a boot option is a nice first
step already. Runtime tuning may involve dynamic migration and other
headaches. The nocb patch is tricky enough to review ;)
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