On 26 May 2016 at 00:38, Yuyang Du <yuyang...@intel.com> wrote: > 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?
maybe there is an issue during the fork of a task too This patch is about the init of the sched_avg of a task group. The problem happens when the 1st task is moved the group but it's not about the fork of a task
