linux-kernel - Re: [PATCH V2 0/2] Suspend clk scaling when there is no request

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Message-ID: <172066369902.698281.9935677312111229941.b4-ty@oracle.com>
Date: Wed, 10 Jul 2024 23:08:33 -0400
From: "Martin K. Petersen" <martin.petersen@...cle.com>
To: "James E.J. Bottomley" <James.Bottomley@...senPartnership.com>,
        Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
        Ram Prakash Gupta <quic_rampraka@...cinc.com>
Cc: "Martin K . Petersen" <martin.petersen@...cle.com>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        Avri Altman <avri.altman@....com>,
        Bart Van Assche <bvanassche@....org>, linux-scsi@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        quic_cang@...cinc.com, quic_nguyenb@...cinc.com,
        quic_pragalla@...cinc.com, quic_nitirawa@...cinc.com
Subject: Re: [PATCH V2 0/2] Suspend clk scaling when there is no request

On Thu, 27 Jun 2024 14:07:54 +0530, Ram Prakash Gupta wrote:

> Currently ufs clk scaling is getting suspended only when the
> clks are scaled down, but next when high load is generated its
> adding a huge amount of latency in scaling up the clk and complete
> the request post that.
> 
> Now if the scaling is suspended in its existing state, and when high
> load is generated it is helping improve the random performance KPI by
> 28%. So suspending the scaling when there is no request. And the clk
> would be put in low scaled state when the actual request load is low.
> 
> [...]

Applied to 6.11/scsi-queue, thanks!

[1/2] scsi: ufs: Suspend clk scaling on no request
      https://git.kernel.org/mkp/scsi/c/50183ac2cfb5
[2/2] scsi: ufs: qcom: Enable suspending clk scaling on no request
      https://git.kernel.org/mkp/scsi/c/ed7dac86f140

-- 
Martin K. Petersen	Oracle Linux Engineering