Date: Fri, 12 May 2006 09:03:24 -0400 (EDT)
From: Steven Rostedt <rostedt@goodmis.org>
To: Mark Hounschell <markh@compro.net>
cc: Ingo Molnar <mingo@elte.hu>, john stultz <johnstul@us.ibm.com>,
       lkml <linux-kernel@vger.kernel.org>,
       Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [RFC][PATCH -rt] irqd starvation on SMP by a single process?
In-Reply-To: <44648532.8080200@compro.net>
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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

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