Re: [PATCH] arm64/kernel: Simplify __cpu_up() by bailing out early

From: Catalin Marinas
Date: Tue Mar 17 2020 - 06:09:04 EST


On Tue, Mar 17, 2020 at 10:06:09AM +0000, Mark Rutland wrote:
> On Mon, Mar 02, 2020 at 12:21:35PM +0000, Mark Rutland wrote:
> > On Mon, Mar 02, 2020 at 01:03:40PM +1100, Gavin Shan wrote:
> > > The function __cpu_up() is invoked to bring up the target CPU through
> > > the backend, PSCI for example. The nested if statements won't be needed
> > > if we bail out early on the following two conditions where the status
> > > won't be checked. The code looks simplified in that case.
> > >
> > > * Error returned from the backend (e.g. PSCI)
> > > * The target CPU has been marked as onlined
> > >
> > > Signed-off-by: Gavin Shan <gshan@xxxxxxxxxx>
> >
> > FWIW, this looks like a nice cleanup to me:
> >
> > Reviewed-by: Mark Rutland <mark.rutland@xxxxxxx>
>
> Catalin, are you happy to pick this up?

Yes, it was on my list to pick up already, just haven't got around to it
yet.

--
Catalin