Messages in this thread | | | Date | Mon, 07 Oct 2013 15:06:51 -0400 | From | Rik van Riel <> | Subject | Re: [PATCH 38/63] sched: Introduce migrate_swap() |
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On 10/07/2013 06:29 AM, Mel Gorman wrote: > From: Peter Zijlstra <peterz@infradead.org> > > Use the new stop_two_cpus() to implement migrate_swap(), a function that > flips two tasks between their respective cpus. > > I'm fairly sure there's a less crude way than employing the stop_two_cpus() > method, but everything I tried either got horribly fragile and/or complex. So > keep it simple for now. > > The notable detail is how we 'migrate' tasks that aren't runnable > anymore. We'll make it appear like we migrated them before they went to > sleep. The sole difference is the previous cpu in the wakeup path, so we > override this. > > Signed-off-by: Peter Zijlstra <peterz@infradead.org> > Signed-off-by: Mel Gorman <mgorman@suse.de>
Reviewed-by: Rik van Riel <riel@redhat.com>
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