| Message ID | 20231213124353.16407-1-quic_mnaresh@quicinc.com |
|---|---|
| Headers | show |
| Series | Add CPU latency QoS support for ufs driver | expand |
> Add CPU latency QoS support for ufs driver. This improves random io > performance by 15% for ufs. > > tiotest benchmark tool io performance results on sm8550 platform: Will it possible to provide test results for non-ufs4.0 platforms? e.g. for SM8250, just to know if it would make sense to backport this to earlier releases. Thanks, Avri
On 12/15/2023 2:35 PM, Avri Altman wrote: >> Add CPU latency QoS support for ufs driver. This improves random io >> performance by 15% for ufs. >> >> tiotest benchmark tool io performance results on sm8550 platform: > Will it possible to provide test results for non-ufs4.0 platforms? > e.g. for SM8250, just to know if it would make sense to backport this to earlier releases. > Hi Avri, Performed tiotest benchmark tool io performance test on SM8450 platform and see good improvement there as well. > Thanks, > Avri Thanks, Naresh.
Add CPU latency QoS support for ufs driver. This improves random io performance by 15% for ufs. tiotest benchmark tool io performance results on sm8550 platform: 1. Without PM QoS support Type (Speed in) | Average of 18 iterations Random Read(IPOS) | 37101.3 Random Write(IPOS) | 41065.13 2. With PM QoS support Type (Speed in) | Average of 18 iterations Random Read(IPOS) | 42943.4 Random Write(IPOS) | 46784.9 (Improvement with PM QoS = ~15%). This patch is based on below patch by Stanley Chu [1]. Moving the PM QoS code to ufshcd.c and making it generic. [1] https://lore.kernel.org/r/20220623035052.18802-8-stanley.chu@mediatek.com Changes from v4: - Addressed angelogioacchino's comments to update commit text - Addressed angelogioacchino's comments to code alignment Changes from v3: - Removed UFSHCD_CAP_PM_QOS capability flag from patch#2 Changes from v2: - Addressed bvanassche and mani comments - Provided sysfs interface to enable/disable PM QoS feature Changes from v1: - Addressed bvanassche comments to have the code in core ufshcd - Design is changed from per-device PM QoS to CPU latency QoS based support - Reverted existing PM QoS feature from MEDIATEK UFS driver - Added PM QoS capability for both QCOM and MEDIATEK SoCs Maramaina Naresh (2): ufs: core: Add CPU latency QoS support for ufs driver ufs: ufs-mediatek: Migrate to UFSHCD generic CPU latency PM QoS support drivers/ufs/core/ufshcd.c | 125 ++++++++++++++++++++++++++++++++ drivers/ufs/host/ufs-mediatek.c | 17 ----- drivers/ufs/host/ufs-mediatek.h | 3 - include/ufs/ufshcd.h | 6 ++ 4 files changed, 131 insertions(+), 20 deletions(-)