Re: [PATCH v2] sched: fix first task of a task group is attached twice

From: Yuyang Du
Date: Thu May 26 2016 - 02:35:55 EST

On Wed, May 25, 2016 at 05:01:11PM +0200, Vincent Guittot wrote:
> The cfs_rq->avg.last_update_time is initialize to 0 with the main effect
> that the 1st sched_entity that will be attached, will keep its
> last_update_time set to 0 and will attached once again during the
> enqueue.
> Initialize cfs_rq->avg.last_update_time to 1 instead.

Actually, the first time (attach_task_cfs_rq()) is called even way
before init_entity_runnable_average(), no?