Re: [PATCH v4 2/2] ARM: cpuidle: make arm_cpuidle_suspend() a bit more efficient

From: Jisheng Zhang
Date: Fri Jul 08 2016 - 07:03:48 EST


On Fri, 8 Jul 2016 12:50:12 +0200 Daniel Lezcano wrote:

> On Fri, Jul 08, 2016 at 02:17:29PM +0800, Jisheng Zhang wrote:
> > Dear Daniel,
> >
> > On Thu, 7 Jul 2016 15:46:28 +0200 Daniel Lezcano wrote:
> >
> > > On Wed, Jul 06, 2016 at 02:15:55PM +0800, Jisheng Zhang wrote:
> > > > Currently, we check cpuidle_ops.suspend every time when entering a
> > > > low-power idle state. But this check could be avoided in this hot path
> > > > by moving it into arm_cpuidle_read_ops() to reduce arm_cpuidle_suspend
> > > > overhead a bit.
> > > >
> > > > Signed-off-by: Jisheng Zhang <jszhang@xxxxxxxxxxx>
> > > > ---
> > >
> > > Acked-by: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>
> >
> > I'm not sure the upstream merging path this patch should follow, Per my
> > understanding, I need to put it into Russell's PATCH system.
>
> Or alternatively through arm-soc
>

Got it. thanks.

Dear Arnd, Olof,

I have no pull request permission. what's your preference? Could you please
advise?

Thanks