On 10/07/2013 06:29 AM, Mel Gorman wrote: > From: Peter Zijlstra <peterz@xxxxxxxxxxxxx> > > 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@xxxxxxxxxxxxx> > Signed-off-by: Mel Gorman <mgorman@xxxxxxx> Reviewed-by: Rik van Riel <riel@xxxxxxxxxx> -- All rights reversed -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>