Re: [RFC][PATCH -rt] irqd starvation on SMP by a single process?

Steven Rostedt
2006-05-12T13:03:41Z

On Fri, 12 May 2006, Mark Hounschell wrote:

> >
> > Mark, does this fix the problem?
> >
> > Ingo
> >
> > Index: linux-rt.q/drivers/net/3c59x.c
> > ===================================================================
> > --- linux-rt.q.orig/drivers/net/3c59x.c
> > +++ linux-rt.q/drivers/net/3c59x.c
> > @@ -1897,7 +1897,8 @@ vortex_timer(unsigned long data)
> >
> > if (vp->medialock)
> > goto leave_media_alone;
> > - disable_irq(dev->irq);
> > + /* hack! */
> > + disable_irq_nosync(dev->irq);
> > old_window = ioread16(ioaddr + EL3_CMD) >> 13;
> > EL3WINDOW(4);
> > media_status = ioread16(ioaddr + Wn4_Media);
> >
>
> Yes it does.
>

It fixes it for both "complete preemption" and "normal preemption"?

-- Steve