Re: [PATCH 17/18] sched: Retry migration of tasks to CPU on apreferred node

[Mel Gorman]

On Wed, Jul 31, 2013 at 12:05:05PM +0200, Peter Zijlstra wrote:
> On Wed, Jul 31, 2013 at 11:03:31AM +0100, Mel Gorman wrote:
> > On Thu, Jul 25, 2013 at 12:33:52PM +0200, Peter Zijlstra wrote:
> > > 
> > > Subject: stop_machine: Introduce stop_two_cpus()
> > > From: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
> > > Date: Sun Jul 21 12:24:09 CEST 2013
> > > 
> > > Introduce stop_two_cpus() in order to allow controlled swapping of two
> > > tasks. It repurposes the stop_machine() state machine but only stops
> > > the two cpus which we can do with on-stack structures and avoid
> > > machine wide synchronization issues.
> > > 
> > > Signed-off-by: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
> > 
> > Clever! I did not spot any problems so will be pulling this (and
> > presumably the next patch) into the series. Thanks!
> 
> You mean aside from the glaring lack of hotplug handling? :-)

Other than that which the following patch called out anyway :)

-- 
Mel Gorman
SUSE Labs
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