From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ingo Molnar <mingo-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Subject: Re: [PATCH v9 00/13] support "task_isolation" mode for nohz_full
Date: Wed, 13 Jan 2016 11:44:53 +0100
Message-ID: <20160113104453.GB9854@gmail.com>
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To: Chris Metcalf <cmetcalf-d5a29ZRxExrQT0dZR+AlfA@public.gmane.org>
Cc: Will Deacon <will.deacon-5wv7dgnIgG8@public.gmane.org>, Gilad Ben Yossef <giladb-d5a29ZRxExrQT0dZR+AlfA@public.gmane.org>, Steven Rostedt <rostedt-nx8X9YLhiw1AfugRpC6u6w@public.gmane.org>, Peter Zijlstra <peterz-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>, Andrew Morton <akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>, Rik van Riel <riel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>, Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>, Frederic Weisbecker <fweisbec-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>, Thomas Gleixner <tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>, "Paul E. McKenney" <paulmck-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>, Christoph Lameter <cl-vYTEC60ixJUAvxtiuMwx3w@public.gmane.org>, Viresh Kumar <viresh.kumar-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>, Catalin Marinas <catalin.marinas-5wv7dgnIgG8@public.gmane.org>, Andy Lutomirski <luto-kltTT9wpgjJwATOyAt5JVQ@public.gmane.org>, Daniel Lezcano <daniel.lezcano-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>, linux-doc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>
List-Id: linux-api@vger.kernel.org


* Chris Metcalf <cmetcalf-d5a29ZRxExrQT0dZR+AlfA@public.gmane.org> wrote:

> (Adding Mark to cc's)
> 
> On 01/12/2016 05:07 AM, Will Deacon wrote:
> >On Mon, Jan 11, 2016 at 04:15:50PM -0500, Chris Metcalf wrote:
> >>Ping!  There has been no substantive feedback to this version of
> >>the patch in the week since I posted it, which optimistically suggests
> >>to me that people may be satisfied with it.  If that's true, Frederic,
> >>I assume this would be pulled into your tree?
> >>
> >>I have slightly updated the v9 patch series since this posting:
> >>
> >>[...]
> >>
> >>- Incorporated Mark Rutland's changes to convert arm64
> >>   assembly to C code instead of using my own version.
> >Please avoid queuing these patches -- the first is already in the arm64
> >queue for 4.5 and the second was found to introduce a substantial
> >performance regression on the syscall entry/exit path. I think Mark had
> >an updated version to address that, so it would be easier not to have
> >an old version sitting in some other queue!
> 
> I am not formally queueing them anywhere (like linux-next), though
> now that you mention it, that's a pretty good idea - I'll talk to Steven
> about that, assuming this merge window closes without the task
> isolation stuff going in.

NAK. Given the controversy, no way should this stuff go outside the primary trees 
it affects: the scheduler, timer, irq, etc. trees.

We can merge this up in -tip once everyone is happy... but as I said, don't expect 
many replies before and during the merge window.

Thanks,

	Ingo>