Re: [PATCH 00/17] Backport rt/deadline crash and the ardous story of FUTEX_UNLOCK_PI to 4.4

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On Mon, Nov 19, 2018 at 12:27:21PM +0100, Henrik Austad wrote:
> On Fri, Nov 09, 2018 at 11:35:31AM +0100, Henrik Austad wrote:
> > On Fri, Nov 09, 2018 at 11:07:28AM +0100, Henrik Austad wrote:
> > > From: Henrik Austad <haustad@xxxxxxxxx>
> > > 
> > > Short story:
> > 
> > Sorry for the spam, it looks like I was not very specific in /which/ 
> > version I targeted this to, as well as not providing a full Cc-list for the 
> > cover-letter.
> 
> Gentle prod. I realize this was sent out just before plumbers and that 
> people had pretty packed agendas, so a small nudge to gain a spot closer to 
> the top of the inbox :)
> 
> This series has now been running on an arm64 system for 9 days without any 
> issues and pi_stress showed a dramatic improvement from ~30 seconds and up 
> to several ours (it finally deadlocked at 3.9e9 inversions).
> 
> I'd greatly appreciate if someone could give the list of patches a quick 
> glance to verify that I got all the required patches and then if it could 
> be added to 4.4.y.

This is a really intrusive series of patches, and without some testing
and verification by others, I am really reluctant to take these patches.

Why not just move to the 4.9.y tree, or better yet, 4.19.y to resolve
this issue for your systems?

thanks,

greg k-h



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