From: Avri Altman <avri.altman@wdc.com>
To: "James E . J . Bottomley" <jejb@linux.vnet.ibm.com>,
"Martin K . Petersen" <martin.petersen@oracle.com>,
linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: gregkh@linuxfoundation.org, Bart Van Assche <bvanassche@acm.org>,
yongmyung lee <ymhungry.lee@samsung.com>,
Daejun Park <daejun7.park@samsung.com>,
alim.akhtar@samsung.com, asutoshd@codeaurora.org,
Zang Leigang <zangleigang@hisilicon.com>,
Avi Shchislowski <avi.shchislowski@wdc.com>,
Bean Huo <beanhuo@micron.com>,
cang@codeaurora.org, stanley.chu@mediatek.com,
Avri Altman <avri.altman@wdc.com>
Subject: [PATCH v4 0/9] Add Host control mode to HPB
Date: Fri, 26 Feb 2021 10:32:51 +0200 [thread overview]
Message-ID: <20210226083300.30934-1-avri.altman@wdc.com> (raw)
v3 -> v4:
- rebase on Daejun's v25
v2 -> v3:
- Attend Greg's and Can's comments
- rebase on Daejun's v21
v1 -> v2:
- attend Greg's and Daejun's comments
- add patch 9 making host mode parameters configurable
- rebase on Daejun's v19
The HPB spec defines 2 control modes - device control mode and host
control mode. In oppose to device control mode, in which the host obey
to whatever recommendation received from the device - In host control
mode, the host uses its own algorithms to decide which regions should
be activated or inactivated.
We kept the host managed heuristic simple and concise.
Aside from adding a by-spec functionality, host control mode entails
some further potential benefits: makes the hpb logic transparent and
readable, while allow tuning / scaling its various parameters, and
utilize system-wide info to optimize HPB potential.
This series is based on Samsung's V25 device-control HPB2.0 driver, see
msg-id: 20210226073233epcms2p80fca2dffabea03143a9414838f757633@epcms2p8
in lore.kernel.org.
This version was tested on Galaxy S20, and Xiaomi Mi10 pro.
Your meticulous review and testing is mostly welcome and appreciated.
Thanks,
Avri
Avri Altman (9):
scsi: ufshpb: Cache HPB Control mode on init
scsi: ufshpb: Add host control mode support to rsp_upiu
scsi: ufshpb: Add region's reads counter
scsi: ufshpb: Make eviction depends on region's reads
scsi: ufshpb: Region inactivation in host mode
scsi: ufshpb: Add hpb dev reset response
scsi: ufshpb: Add "Cold" regions timer
scsi: ufshpb: Add support for host control mode
scsi: ufshpb: Make host mode parameters configurable
Documentation/ABI/testing/sysfs-driver-ufs | 67 +++
drivers/scsi/ufs/ufshcd.h | 2 +
drivers/scsi/ufs/ufshpb.c | 528 ++++++++++++++++++++-
drivers/scsi/ufs/ufshpb.h | 40 ++
4 files changed, 613 insertions(+), 24 deletions(-)
--
2.25.1
next reply other threads:[~2021-02-26 8:35 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-26 8:32 Avri Altman [this message]
2021-02-26 8:32 ` [PATCH v4 1/9] scsi: ufshpb: Cache HPB Control mode on init Avri Altman
2021-02-26 8:32 ` [PATCH v4 2/9] scsi: ufshpb: Add host control mode support to rsp_upiu Avri Altman
2021-02-26 8:32 ` [PATCH v4 3/9] scsi: ufshpb: Add region's reads counter Avri Altman
2021-02-26 8:32 ` [PATCH v4 4/9] scsi: ufshpb: Make eviction depends on region's reads Avri Altman
2021-02-26 8:32 ` [PATCH v4 5/9] scsi: ufshpb: Region inactivation in host mode Avri Altman
2021-02-26 8:32 ` [PATCH v4 6/9] scsi: ufshpb: Add hpb dev reset response Avri Altman
2021-02-26 8:32 ` [PATCH v4 7/9] scsi: ufshpb: Add "Cold" regions timer Avri Altman
2021-02-26 8:32 ` [PATCH v4 8/9] scsi: ufshpb: Add support for host control mode Avri Altman
2021-02-26 8:33 ` [PATCH v4 9/9] scsi: ufshpb: Make host mode parameters configurable Avri Altman
[not found] ` <CGME20210226083447epcas2p2f68ef00a935d25bd2cfc930d1ef1f4f7@epcms2p3>
2021-03-02 8:20 ` [PATCH v4 6/9] scsi: ufshpb: Add hpb dev reset response Daejun Park
2021-03-02 8:51 ` Avri Altman
2021-03-02 9:32 ` Avri Altman
[not found] ` <CGME20210226083459epcas2p1862e3e2c18208074336cc9faf14a7139@epcms2p7>
2021-03-02 8:26 ` [PATCH v4 7/9] scsi: ufshpb: Add "Cold" regions timer Daejun Park
2021-03-02 8:45 ` Avri Altman
[not found] ` <CGME20210226083459epcas2p1862e3e2c18208074336cc9faf14a7139@epcms2p4>
2021-03-02 9:04 ` Daejun Park
[not found] ` <CGME20210226083422epcas2p2d39acff666e2cb9ed97bc2d5c7a8df6f@epcms2p5>
2021-03-02 8:31 ` [PATCH v4 3/9] scsi: ufshpb: Add region's reads counter Daejun Park
2021-03-02 9:19 ` Avri Altman
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