Re: [PATCH v8 10/10] tracing/hyper-v: trace hyperv_mmu_flush_tlb_others()

From: Steven Rostedt
Date: Fri Jun 09 2017 - 15:07:26 EST


On Fri, 09 Jun 2017 20:53:53 +0200
Paul Bolle <pebolle@xxxxxxxxxx> wrote:

> On Fri, 2017-06-09 at 14:32 -0400, Steven Rostedt wrote:
> > I'm sure it works, but it just adds one more way of doing the same
> > thing. I thought that was what perl was always criticized for, and why
> > people usually prefer python. Don't get me wrong, I prefer oysters over
> > snakes. But I just wanted to point out the lack of consistency here.
>
> A major benefit is that
> #if IS_ENABLED(CONFIG_HYPERV)
>
> is shorter than
> #if defined(CONFIG_HYPERV) || defined(CONFIG_HYPERV_MODULE)
>
> and less prone to typos.
>

I don't believe the module version is needed here. Otherwise I would
question the #if altogether. Which now I'm looking at it, why is it
needed?

What includes this header file that wouldn't have that set anyway? The
only place it is included is in:

arch/x86/hyperv/mmu.c

Is that compiled without CONFIG_HYPERV?

-- Steve