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SubjectRe: [PATCH 17/18] sched: Retry migration of tasks to CPU on a preferred node
On Thu, Jul 25, 2013 at 12:33:52PM +0200, Peter Zijlstra wrote:
> Subject: stop_machine: Introduce stop_two_cpus()
> From: Peter Zijlstra <>
> 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 <>

Clever! I did not spot any problems so will be pulling this (and
presumably the next patch) into the series. Thanks!

Mel Gorman

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