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Subject: Re: [rfc] where to put cpuid_t ?
From: John Baldwin <jhb@FreeBSD.org>
In-Reply-To: <CAJ-VmokOpA8nFashcTpmU0j8Dyw_LX-VvVudcppuGyGV97PRbA@mail.gmail.com>
Date: Tue, 29 Jul 2014 10:51:57 -0700
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To: Adrian Chadd <adrian@freebsd.org>
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On Jul 24, 2014, at 12:03 AM, Adrian Chadd <adrian@freebsd.org> wrote:

> Hi!
> 
> I've been chipping away at a cpuid_t in a local branch for a while and
> I think I have the very basics working well enough.
> 
> However, the most annoying thing that's crept up is the most bikeshed
> topic of them all - where should it live.
> 
> I'd like to avoid having to include sys/pcpu.h or sys/_cpuset.h just
> for the id type - it seems a bit overkill.
> 
> So - suggestions? Otherwise I'm going to leave it in sys/pcpu.h and
> just polluate appropriately.
> 
> I'd like to try and get cpuid_t and a handful of KBI-changing things
> into -HEAD before 11 is branched so we at least have a hope of trying
> to support > 128 CPUs out of the box in the immediate future and > 253
> CPUs in the later future.

__cpuid_t should be in <sys/_types.h> and cpuid_t should be in <sys/types.h>.

This is how the old cpumask_t worked (though it allowed __cpumask_t to be MD
whereas I think you can probably make __cpuid_t MI).

-- 
John Baldwin