Add per-cpu PM QoS support for ufs. This improves random io performance
by 20% for ufs.

tiotest benchmark tool io performance results on sm8550 platform:

1. Without PM QoS support
	Type (Speed in)    | Average of 6 iterations
	Random Write(IPOS) | 32201
	Random Read(IPOS)  | 32201

2. With PM QoS support
	Type (Speed in)    | Average of 6 iterations
	Random Write(IPOS) | 40833.5
	Random Read(IPOS)  | 40833.5
(Improvement % with PM QoS = ~20%).

Maramaina Naresh (4):
  dt-bindings: ufs: qcom: Add qos property
  ufs: ufs-qcom: Add per-cpu PM QoS support for ufs
  ufs: ufs-qcom: Add per-cpu PM QoS vote support for ufs
  arm64: dts: qcom: sm8550: Add per-cpu PM QoS support for ufs

 .../devicetree/bindings/ufs/qcom,ufs.yaml          |  16 +
 arch/arm64/boot/dts/qcom/sm8550.dtsi               |   9 +
 drivers/ufs/host/ufs-qcom.c                        | 340 ++++++++++++++++++++-
 drivers/ufs/host/ufs-qcom.h                        |  37 +++
 4 files changed, 401 insertions(+), 1 deletion(-)

-- 
2.7.4

On 10/10/23 08:49, Maramaina Naresh wrote:
> Add per-cpu PM QoS support for ufs. This improves random io performance
> by 20% for ufs.

What in this patch series (other than the DT-bindings) is specific to
the Qualcomm driver? If the answer is not much: please move this
functionality into the UFS driver core.

Thanks,

Bart.

Hi Bart,

Thank you for reviewing the patch.  This is not specific to the Qualcomm 
driver.

We will move this feature to core UFS.

Thanks,

Naresh.

On 10/12/2023 2:26 AM, Bart Van Assche wrote:
> On 10/10/23 08:49, Maramaina Naresh wrote:
>> Add per-cpu PM QoS support for ufs. This improves random io performance
>> by 20% for ufs.
>
> What in this patch series (other than the DT-bindings) is specific to
> the Qualcomm driver? If the answer is not much: please move this
> functionality into the UFS driver core.
>
> Thanks,
>
> Bart.
>