linux-kernel - Re: [PATCH v2 3/7] thermal: intel: hfi: Minimally initialize the Hardware Feedback Interface

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Message-ID: <2f284d197a5cc160d973a81c898ff42fb4a75db1.camel@linux.intel.com>
Date:   Sun, 02 Jan 2022 18:22:33 -0800
From:   srinivas pandruvada <srinivas.pandruvada@...ux.intel.com>
To:     Ricardo Neri <ricardo.neri-calderon@...ux.intel.com>,
        "Rafael J. Wysocki" <rafael@...nel.org>
Cc:     "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Linux PM <linux-pm@...r.kernel.org>,
        the arch/x86 maintainers <x86@...nel.org>,
        "open list:DOCUMENTATION" <linux-doc@...r.kernel.org>,
        Len Brown <len.brown@...el.com>,
        Aubrey Li <aubrey.li@...ux.intel.com>,
        Amit Kucheria <amitk@...nel.org>,
        Andi Kleen <ak@...ux.intel.com>,
        Tim Chen <tim.c.chen@...ux.intel.com>,
        Lukasz Luba <lukasz.luba@....com>,
        "Ravi V. Shankar" <ravi.v.shankar@...el.com>,
        Ricardo Neri <ricardo.neri@...el.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 3/7] thermal: intel: hfi: Minimally initialize the
 Hardware Feedback Interface

On Sun, 2022-01-02 at 13:46 -0800, Ricardo Neri wrote:
> On Thu, Dec 30, 2021 at 07:43:22PM +0100, Rafael J. Wysocki wrote:
> > On Mon, Dec 20, 2021 at 4:23 PM Ricardo Neri
> > <ricardo.neri-calderon@...ux.intel.com> wrote:
> > 
> > 
[...]

> > This looks like it may be too general, because HFI is not a
> > thermal-only thing.
> 
> > 
> > Maybe cal it INTEL_HFI_THERMAL?
> 
> True. The *Enhanced* HFI introduces the concept of thread classes
> [1]. I was
> planning to wrap this patchset, which parses the HFI table and deals
> with updates, as INTEL_HFI. The code that deals with classes would be
> wrapped as INTEL_EHFI.
> 
> After this comment, so you still think that INTEL_HFI_THERMAL makes
> more
> sense?
In general most of the configs for Intel thermal is has THERMAL suffix,
so to be consistent may be add THERMAL also at the end.

You can still add INTEL_EHFI as a silent config, which user will not
select. It will be selected by default with INTEL_HFI_THERMAL.

Thanks,
Srinivas


> 
> Thanks and BR,
> Ricardo
> 
> 
> [1].  
> https://www.intel.com/content/www/us/en/develop/download/intel-architecture-instruction-set-extensions-programming-reference.html
>  , Chapter 13
>