Re: [patch] Real-Time Preemption, -RT-2.6.10-rc2-mm3-V0.7.31-0

From: Ingo Molnar
Date: Sat Nov 27 2004 - 02:18:25 EST



* Rui Nuno Capela <rncbc@xxxxxxxxx> wrote:

> Ingo Molnar wrote:
> >
> > the -RT patchset doesnt properly detect my fd0 device, so there's
> > definitely something broken in that area. The unpatched -rc2-mm3 kernel
> > detects it fine. Might be an effect of IRQ threading - the floppy
> > hardware/driver is a fragile beast.
> >
>
> But it works flawlessly on my laptop (P4/UP). Could it be SMP/HT
> related?

yeah, could be, the failure i'm seeing is on SMP. On SMP if you have
interrupt threads then concurrency is higher. fd0 gets detected fine
when i turn IRQ threading off.

Ingo
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