Re: 2.6.14-rt15: cannot build with !PREEMPT_RT

Ingo Molnar
2005-11-29T09:32:08Z

* Ingo Molnar <mingo@elte.hu> wrote:

> * Lee Revell <rlrevell@joe-job.com> wrote:
>
> > On Mon, 2005-11-28 at 17:40 -0500, Lee Revell wrote:
> > > 2.6.11-RT-V0.7.40-04 works
> >
> > and 2.6.12-RT-V0.7.51-28 does not.
>
> thanks. I have further narrowed it down from this point: your .config
> breaks from the 51-01 to the 51-02 kernel (on my testbox).

ok, fixed this one, it was the CURRENT_PTR optimization on UP that broke
if 4K stacks were enabled. (i disabled the optimization for now)

But interestingly, your .config unearthed 2 other serious bugs (!) as
well: the spin_unlock_irq() upon printk was incorrect for !PREEMPT_RT,
and there was an assert introduced by the get-rid-of-bitlocks ext3
patches which was invalid on UP && !PREEMPT_RT. We had these bugs for
quite some time.

I've released -rt21 with these fixes, does it work better for you?

Ingo