linux-kernel - RE: Re: [PATCH v32 0/4] scsi: ufs: Add Host Performance Booster Support

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Message-ID: <20210426024840epcms2p7fa68f5abe64b031bbf67d0f69d88b7b5@epcms2p7>
Date:   Mon, 26 Apr 2021 11:48:40 +0900
From:   Daejun Park <daejun7.park@...sung.com>
To:     Can Guo <cang@...eaurora.org>,
        Daejun Park <daejun7.park@...sung.com>
CC:     Greg KH <gregkh@...uxfoundation.org>,
        "avri.altman@....com" <avri.altman@....com>,
        "jejb@...ux.ibm.com" <jejb@...ux.ibm.com>,
        "martin.petersen@...cle.com" <martin.petersen@...cle.com>,
        "asutoshd@...eaurora.org" <asutoshd@...eaurora.org>,
        "stanley.chu@...iatek.com" <stanley.chu@...iatek.com>,
        "bvanassche@....org" <bvanassche@....org>,
        "huobean@...il.com" <huobean@...il.com>,
        ALIM AKHTAR <alim.akhtar@...sung.com>,
        "linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        JinHwan Park <jh.i.park@...sung.com>,
        Javier Gonzalez <javier.gonz@...sung.com>,
        Sung-Jun Park <sungjun07.park@...sung.com>,
        Jinyoung CHOI <j-young.choi@...sung.com>,
        Dukhyun Kwon <d_hyun.kwon@...sung.com>,
        Keoseong Park <keosung.park@...sung.com>,
        Jaemyung Lee <jaemyung.lee@...sung.com>,
        Jieon Seol <jieon.seol@...sung.com>
Subject: RE: Re: [PATCH v32 0/4] scsi: ufs: Add Host Performance Booster
 Support

Hi Can Guo,

>> 
>> HPB is shown to have a performance improvement of 58 - 67% for random 
>> read
>> workload. [1]
>> 
>> [1]:
>> https://www.usenix.org/conference/hotstorage17/program/presentation/jeong
>> 
>> Daejun Park (4):
>>   scsi: ufs: Introduce HPB feature
>>   scsi: ufs: L2P map management for HPB read
>>   scsi: ufs: Prepare HPB read for cached sub-region
>>   scsi: ufs: Add HPB 2.0 support
>> 
>>  Documentation/ABI/testing/sysfs-driver-ufs |  162 ++
>>  drivers/scsi/ufs/Kconfig                   |    9 +
>>  drivers/scsi/ufs/Makefile                  |    1 +
>>  drivers/scsi/ufs/ufs-sysfs.c               |   22 +
>>  drivers/scsi/ufs/ufs.h                     |   54 +-
>>  drivers/scsi/ufs/ufshcd.c                  |   74 +-
>>  drivers/scsi/ufs/ufshcd.h                  |   29 +
>>  drivers/scsi/ufs/ufshpb.c                  | 2387 ++++++++++++++++++++
>>  drivers/scsi/ufs/ufshpb.h                  |  277 +++
>>  9 files changed, 3013 insertions(+), 2 deletions(-)
>>  create mode 100644 drivers/scsi/ufs/ufshpb.c
>>  create mode 100644 drivers/scsi/ufs/ufshpb.h
> 
>To the entire series:
> 
>Tested-by: Can Guo <cang@...eaurora.org>

Thanks for testing the patch series. :)

Daejun