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

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Message-ID: <14568b67-91bc-5ed3-e887-41e265993033@quicinc.com>
Date:   Mon, 9 Jan 2023 10:42:52 -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-msm@...r.kernel.org>,
        <ccooper@...cinc.com>, <mkrom@....qualcomm.com>,
        <quic_tsoni@...cinc.com>
Subject: Re: Out-of-tree devfreq governor header

Fixing CC list. Apologies!

On 1/9/2023 10:30 AM, John Moon wrote:
> 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