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

Mark Hounschell
2006-05-12T13:07:05Z

Steven Rostedt wrote:
> 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
>
>

Normal for sure. I just rebooted to test complete.

Mark