Re: [PATCH sched_ext/for-6.11] sched_ext: Reverting @p->sched_class if @p->disallow is set

[Zhangqiao (2012 lab)]

hi,

在 2024/7/12 2:57, Tejun Heo 写道:
> Hello,
>
> On Thu, Jul 11, 2024 at 07:07:20PM +0800, Zhangqiao (2012 lab) wrote:
> ...
> >   		if (p->policy == SCHED_EXT) {
> >   			p->policy = SCHED_NORMAL;
> > +			p->sched_class = &fair_sched_class;
> >   			atomic_long_inc(&scx_nr_rejected);
> Did you see any issues with the existing implementation? The policy is set
> before the task is attached, so it should work fine. Also, you can't change
> sched_class by just assigning to it.

What does "attach" mean? I'm not sure. p->sched_class is assigned in 
__sched_fork()
which is performed before scx_ops_init_task().

> Thanks.