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Re: [PATCH RT] tasklet/rt: Prevent tasklets from going into infinite spin in RT

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On Tue, Nov 29, 2011 at 09:50:39PM -0600, Clark Williams wrote:
> On Tue, 29 Nov 2011 20:55:20 -0500
> Steven Rostedt <rostedt@xxxxxxxxxxx> wrote:
> 
> > Ingo,
> > 
> > I forward ported this code from 2.6.33.9-rt31, but I think you were the
> > original author, as I found most of this code in the
> > "tasklet-redesign.patch" from my broken out 2.6.24-rt patches. I
> > committed it into my git tree (stable-rt) under your name, and added the
> > Signed-off-by that you had in that patch, if you have and objections,
> > please let me know. This patch should never see mainline, but it will
> > probably be going into the -rt branch. I wrote up this change log, if
> > there's something you don't like in it, let me know and I'll fix it.
> > 
> > Luis and Clark (I love saying that),
> 
> No matter how many times you say it, I'm still not treking across the
> USA with Luis. :)
> 
> > I booted this patch against 3.0-rt stable, and it didn't crash ;)
> > Could you apply it and see if it fixes the hang that you've been seeing.
> 
> Yeah, since Luis is a couple of time zones ahead of us, maybe it'll all
> be fixed when we get up in the morning.

I've got it running on a system here that frequently encountered the
condition.  I will let it perform some automated testing while I sleep.
Should have results by morning (west coast US).

-- 
Mike

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