On Mon, Jun 16, 2014 at 08:50:07AM -0700, Tim Chen wrote: > > The worry I have is that this update is 'slow'. We could have grown many > > tasks since the last update. > > The update to turn on the indicator is immediate and triggered in > add_nr_running. So if there are more than one tasks on any cpu, > we start load balancing again right away. It is only the > clearing of the indicator in update_sd_lb_stats that takes time. > That does no harm as the cleared indicator is for the skipping of load > balance, which can be delayed. >
Oh right, shows me I shouldn't be reading patches on sunday or similarly daft times ;)
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