[PATCH 0/1] x86/cpu: kill eager_fpu_init_bp()

Oleg Nesterov
2015-03-14T15:15:04Z

On 03/14, Borislav Petkov wrote:
>
> On Fri, Mar 13, 2015 at 07:26:56PM +0100, Oleg Nesterov wrote:
> > Hello.
> >
> > This patch is "out of order" a bit, but since Borislav mentioned this
> > during review...
> >
> > And I was going to send the 2nd one (below), but it turns out that
> > __init_refok is not discarded? So is there any way to do
> >
> > void __init init_function();
> >
> > void non_init_func()
> > {
> > if (can_only_be_true_before_free_initmem)
> > init_function();
> > }
> >
> > and avoid the warning?

It turns out I _completely_ misunderstood __init_refok.

> Actually, I was wondering if we could be even more radical and do
> the boot cpu-specific stuff only in the BSP boot path.

Yes, yes, agreed. This needs more changes, but imo this would be a nice
cleanup.

Still. I think it makes sense to kill eager_fpu_init_bp() right now, this
won'r complicate the mentioned cleanups.

On top of "x86/fpu: don't allocate fpu->state for swapper/0".

Oleg.