From: Mark Hounschell <markh@compro.net>
To: Steven Rostedt <rostedt@goodmis.org>
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?
Date: Fri, 12 May 2006 09:06:59 -0400 [thread overview]
Message-ID: <44648873.7010402@compro.net> (raw)
In-Reply-To: <Pine.LNX.4.58.0605120902460.30264@gandalf.stny.rr.com>
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
next prev parent reply other threads:[~2006-05-12 13:07 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-12 2:43 [RFC][PATCH -rt] irqd starvation on SMP by a single process? john stultz
2006-05-12 5:50 ` Ingo Molnar
2006-05-12 7:59 ` Steven Rostedt
2006-05-12 8:10 ` Ingo Molnar
2006-05-12 11:39 ` Mark Hounschell
2006-05-12 11:56 ` Ingo Molnar
2006-05-12 11:59 ` Mark Hounschell
2006-05-12 12:53 ` Mark Hounschell
2006-05-12 13:03 ` Steven Rostedt
2006-05-12 13:06 ` Mark Hounschell [this message]
2006-05-12 13:19 ` Mark Hounschell
2006-05-12 17:47 ` john stultz
2006-05-12 18:04 ` john stultz
2006-05-12 19:16 ` Mark Hounschell
2006-05-12 20:04 ` Mark Hounschell
-- strict thread matches above, loose matches on Subject: below --
2006-05-12 4:22 Edward Killips
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