Re: [PATCH] sched/core: really pretend early bootup to be a normal task

[Konstantin Khlebnikov]

On 05.07.2016 15:41, Peter Zijlstra wrote:
> On Tue, Jul 05, 2016 at 02:23:23PM +0300, Konstantin Khlebnikov wrote:
> > Commit 1b537c7d1e58 ("sched/core: Remove check of p->sched_class") placed
> > "current->sched_class = &fair_sched_class" before call of init_idle() which
> > immediately set sched_class back to idle_sched_class.
> >
> > This patch reverts this piece because after commit de9b8f5dcbd9 ("sched:
> > Fix crash trying to dequeue/enqueue the idle thread") init_idle() doesn't
> > call do_set_cpus_allowed() and nobody will dereference ->sched_class.
>
> I don't understand, what is broken?

"pretending" hack is broken. As I wrote maybe it is not needed any more.

--
Konstantin