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

[Ingo Molnar]

* 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
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