Re: [patch] Real-Time Preemption, -VP-2.6.9-rc4-mm1-U3

[K.R. Foley]

Ingo Molnar wrote:
> * K.R. Foley <kr@xxxxxxxxxx> wrote:
>
>
> > > > It builds fine if CONFIG_SMP is set.  Am I really the only person
> > > > running this on UP?
> > >
> > > I run both, on different machines.
> > >
> > > I'm actually running 2.6.9-rc4-mm1-U3 at this very moment, on my laptop
> > > (P4 2.53Ghz/UP, Mdk 10.1c) and also on my desktop machine (P4
> > > 2.80Ghz/SMP/HT, SuSE 9.1).
> > >
> > > However, on the desktop (SMP/HT) I could only made it boot/init
> > > successfully with CONFIG_PREEMPT_REALTIME off. On my laptop (UP) is
> > > running pretty well on full RT.
> >
> > I'm curious what you get when you try to boot the SMP system with
> > REALTIME on? My SMP/HT system at the office works fine with this. 
> > Although there is one difference that jumps out at me. I have disabled
> > ACPI. I don't have the config handy so I can't do a complete
> > comparison, just going from memory.
>
>
> one group of complaints seems to be related to SELINUX=y: it has hooks
> all across the kernel deep within the locking hierarchy - and then
> itself it does pretty complex stuff too. IPC is certainly broken due to
> this, but some networking problems seem to be related too.
>
> 	Ingo
Well therein lies a big difference. I have disabled this on all the 
systems that I am testing on.

kr
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