linux-kernel - Re: [3.13.y.z extended stable] Patch "locking/mutex: Disable optimistic spinning on some architectures" has been added to staging queue

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Date:	Wed, 06 Aug 2014 18:55:02 -0700
From:	Kamal Mostafa <kamal@...onical.com>
To:	Davidlohr Bueso <davidlohr@...com>, Andev <debiandev@...il.com>
Cc:	Peter Zijlstra <peterz@...radead.org>,
	Mikulas Patocka <mpatocka@...hat.com>,
	David Miller <davem@...emloft.net>,
	Chris Metcalf <cmetcalf@...era.com>,
	James Bottomley <James.Bottomley@...senpartnership.com>,
	Vineet Gupta <vgupta@...opsys.com>,
	Jason Low <jason.low2@...com>,
	Waiman Long <waiman.long@...com>,
	"James E.J. Bottomley" <jejb@...isc-linux.org>,
	Paul McKenney <paulmck@...ux.vnet.ibm.com>,
	John David Anglin <dave.anglin@...l.net>,
	James Hogan <james.hogan@...tec.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Catalin Marinas <catalin.marinas@....com>,
	Russell King <linux@....linux.org.uk>,
	Will Deacon <will.deacon@....com>,
	linux-arm-kernel@...ts.infradead.org,
	LKML <linux-kernel@...r.kernel.org>,
	linuxppc-dev@...ts.ozlabs.org, sparclinux@...r.kernel.org,
	Ingo Molnar <mingo@...nel.org>, kernel-team@...ts.ubuntu.com
Subject: Re: [3.13.y.z extended stable] Patch "locking/mutex: Disable
 optimistic spinning on some architectures" has been added to staging queue


> On Wed, 2014-08-06 at 17:25 -0400, Andev wrote:
> > On Wed, Aug 6, 2014 at 4:54 PM, Kamal Mostafa <kamal@...onical.com> wrote:
> > > This is a note to let you know that I have just added a patch titled
> > >
> > >     locking/mutex: Disable optimistic spinning on some architectures
> > >
> > > to the linux-3.13.y-queue branch of the 3.13.y.z extended stable tree
> > > which can be found at:
> > >
> > >  http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.13.y-queue
> > >
> > > This patch is scheduled to be released in version 3.13.11.6.
> > >
> > 
> > This patch is specifically for parisc, sparc32, tile32, metag-lock1,
> > arc-!llsc and hexagon none of which Ubuntu supports.
> > 
> > Why are you backporting this patch?

On Wed, 2014-08-06 at 14:30 -0700, Davidlohr Bueso wrote:
> Well 3.13.y.z isn't an Ubuntu kernel, its upstream, and those archs
> *are* supported.

Davidlohr's answer is correct: This is not an "Ubuntu kernel".

3.13.y.z is an "extended stable" kernel which follows the same rules as
the kernel.org official stable kernels.  It contains no Ubuntu-specific
patches, and supports the same arch's as mainline.

More details about this and the other Canonical-funded-and-hosted
"extended stable" kernel versions is available here:

> For more information about the 3.13.y.z tree, see
> https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

 -Kamal


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