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Date: Mon, 7 Nov 2016 19:16:24 +0000
From: Will Deacon <will.deacon@arm.com>
To: Rik van Riel <riel@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>,
        Chris Metcalf <cmetcalf@mellanox.com>,
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        Daniel Lezcano <daniel.lezcano@linaro.org>,
        Francis Giraldeau <francis.giraldeau@gmail.com>,
        Andi Kleen <andi@firstfloor.org>, Arnd Bergmann <arnd@arndb.de>,
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Subject: Re: task isolation discussion at Linux Plumbers
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On Mon, Nov 07, 2016 at 02:12:13PM -0500, Rik van Riel wrote:
> On Mon, 2016-11-07 at 19:36 +0100, Thomas Gleixner wrote:
> > On Mon, 7 Nov 2016, Thomas Gleixner wrote:
> > > 
> > > > 
> > > > == Missing oneshot_stopped callbacks ==
> > > > 
> > > > I raised the issue that various clock_event_device sources don't
> > > > always support oneshot_stopped, which can cause an additional
> > > > final interrupt to occur after the timer infrastructure believes
> > > > the
> > > > interrupt has been stopped.??I have patches to fix this for tile
> > > > and
> > > > arm64 in my patch series; Thomas volunteered to look at adding
> > > > equivalent support for x86.
> > > 
> > > Right.
> > 
> > Untested patch below should fix that.
> >?
> 
> That whitespace cleanup looks awesome, but I am not
> optimistic about its chances to bring about functional
> change.
> 
> What am I overlooking?

It hooks up .set_state_oneshot_stopped?

Will