linux-kernel - Out-of-tree devfreq governor header

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Message-ID: <58121e22-a992-e8c8-2add-e3279be25185@quicinc.com>
Date:   Mon, 9 Jan 2023 10:30:09 -0800
From:   John Moon <quic_johmoo@...cinc.com>
To:     <myungjoo.ham@...sung.com>, <kyungmin.park@...sung.com>,
        <cw00.choi@...sung.com>
CC:     <linux-kernel@...r.kernel.org>, <linux-arm-msml@...r.kernel.org>,
        <quic_ccooper@...cinc.com>, <mkrom@....qualcomm.com>,
        <quic_tsoni@...cinc.com>
Subject: Out-of-tree devfreq governor header

Hi all,

We have an out-of-tree devfreq governor which uses the "governor.h" 
header from "drivers/devfreq". The source code for the governor is 
public on CodeLinaro [1].

Currently, the driver directly includes the "governor.h" header even 
though it's not a public header. A comment at the top of "governor.h" 
says explicitly: "This header is for devfreq governors in drivers/devfreq/".

Could you please advise the best way to use this private devfreq header 
from an out-of-tree governor? Could we move the header into "include/linux"?

[1]: 
https://git.codelinaro.org/clo/la/platform/vendor/qcom/opensource/graphics-kernel/-/blob/gfx-kernel.lnx.1.0.r3-rel/governor_msm_adreno_tz.c#L20

Thanks,
John