linux-kernel - Re: [PATCH] scsi: ufs: core: fix devfreq deadlocks

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Message-ID: <3db8c140-2e4e-0d75-4d81-b2c1f22f68d1@acm.org>
Date:   Wed, 4 Jan 2023 14:31:31 -0800
From:   Bart Van Assche <bvanassche@....org>
To:     Asutosh Das <quic_asutoshd@...cinc.com>
Cc:     Johan Hovold <johan+linaro@...nel.org>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        Avri Altman <avri.altman@....com>, linux-scsi@...r.kernel.org,
        linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        Can Guo <quic_cang@...cinc.com>
Subject: Re: [PATCH] scsi: ufs: core: fix devfreq deadlocks

On 1/4/23 06:10, Asutosh Das wrote:
> Load based toggling of WB seemed fine to me then.
> I haven't thought about another method to toggle WriteBooster yet.
> Let me see if I can come up with something.
> IMT if you have a mechanism in mind, please let me know.

Hi Asutosh,

Which UFS devices need this mechanism? All UFS devices I'm familiar with 
can achieve wire speed for large write requests without enabling the 
WriteBooster.

Thanks,

Bart.