Re: [PATCH 4/4] sched,fair: Fix PELT integrity for new tasks

[Wanpeng Li]

2016-08-01 17:31 GMT+08:00 Mike Galbraith <umgwanakikbuti@xxxxxxxxx>:
> On Mon, 2016-08-01 at 15:30 +0800, Wanpeng Li wrote:
>
>> What's the meaning of "the task is hashed before we call
>> wake_up_new_task()"?
>
> See fork.c::copy_process()
>
>         /*
>          * Make it visible to the rest of the system, but dont wake it up yet.
>          * Need tasklist lock for parent etc handling!
>          */
>         write_lock_irq(&tasklist_lock);
>         ....

Thanks Mike, so here "is hashed" means that add to list instead of real hashing.

Regards,
Wanpeng Li