linux-kernel - Re: Could you support the modules of the coresight drivers?

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Message-ID: <CANLsYkyZz1cOr-jGqHYr9w5MFbS2+t9+dApn5aBgt-KNERQuMA@mail.gmail.com>
Date:   Mon, 6 Jul 2020 08:36:00 -0600
From:   Mathieu Poirier <mathieu.poirier@...aro.org>
To:     김창기 <changki.kim@...sung.com>
Cc:     linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "Suzuki K. Poulose" <suzuki.poulose@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Subject: Re: Could you support the modules of the coresight drivers?

On Fri, 3 Jul 2020 at 01:44, 김창기 <changki.kim@...sung.com> wrote:
>
> Hello.
>
> I am software engineer in charge of BSP (Samsung SOC vendor).
>
> Recently, Google introduced GKI from Android 11(R) version.
> So we can't modified kernel code except module drivers.
>
> Coresight drivers doesn't support module.
> I need the module support because our SoC should set value to vendor
> specific register to run ETMv4.
> And in GKI, ETM has disabled in recommend defconfig.
> So if we use ETM in Android 12(S), it should support module.
>
> Could you support the modules of the coresight drivers?

There have been multiple patchset submitted to do that, the latest one
last week [1].  I encourage you to review and test the work.

Thanks,
Mathieu

[1].https://www.spinics.net/lists/arm-kernel/msg818583.html

>