Re: [PATCH] default to n for GROUP_SCHED and FAIR_GROUP_SCHED

Ingo Molnar
2008-05-05T21:49:27Z

* Parag Warudkar <parag.warudkar@gmail.com> wrote:

> On Mon, May 5, 2008 at 1:21 PM, Ingo Molnar <mingo@elte.hu> wrote:
>
> > does -git boot fine - or is this a regression relative to v2.6.25?
> >
> > I just built your config on latest sched-devel and booted it on two
> > 64-bit testboxes and it boots just fine.
> >
> > could you send your -git bootup log?
>
> Hmm - It's the IO_DELAY stuff - I will test more but it looks like
> with CONFIG_IO_DELAY_TYPE_NONE -git boots fine on my machine but with
> the same option sched-devel does not. Setting CONFIG_IO_DELAY_TYPE=0
> (0x80) makes sched-devel boots again.

hm, that's really interesting. I've added a patch that makes
IO_DELAY_TYPE_NONE depend on CONFIG_BROKEN, because your machine is
reasonably new but apparently needs delays during bootup. But why
sched-devel triggered this is still weird.

Ingo