On 05/09/2013 09:24 AM, Alex Shi wrote:
> Paul,
>
> I am wondering if the following patch needed.
> The wakeuped migrated task will __synchronize_entity_decay(se); in
> migrate_task_fair,
> then it needs to set `se->avg.last_runnable_update -= (-se->avg.decay_count)
> << 20'
> before update_entity_load_avg, in order to avoid slept time is updated twice
> for
> se.avg.load_avg_contrib in both __syncchronize and update_entity_load_avg.
>
> but if the slept task is waked up from self cpu, it miss the
> last_runnable_update before
> update_entity_load_avg(se, 0, 1), so the slept time was used twice in both
> functions.
> Is that right?
Would you like to give some comments on this, Paul?
--
Thanks
Alex
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