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 v6 00/10] Add Host control mode to HPB
Date: Mon, 22 Mar 2021 10:10:34 +0200 [thread overview]
Message-ID: <20210322081044.62003-1-avri.altman@wdc.com> (raw)
v5 -> v6:
- attend CanG's comments
- rebase on Daejun's v31
v4 -> v5:
- attend Daejun's comments
- Control the number of inflight map requests
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 V31 device-control HPB2.0 driver, see
msg-id: CGME20210322064159epcms2p6a4c7deed5f81eaa4f2a8340aaedb446c@epcms2p6
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 (10):
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: Limit the number of inflight map requests
scsi: ufshpb: Add support for host control mode
scsi: ufshpb: Make host mode parameters configurable
Documentation/ABI/testing/sysfs-driver-ufs | 84 +++-
drivers/scsi/ufs/ufshcd.h | 2 +
drivers/scsi/ufs/ufshpb.c | 547 ++++++++++++++++++++-
drivers/scsi/ufs/ufshpb.h | 39 ++
4 files changed, 635 insertions(+), 37 deletions(-)
--
2.25.1
next reply other threads:[~2021-03-22 8:11 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-22 8:10 Avri Altman [this message]
2021-03-22 8:10 ` [PATCH v6 01/10] scsi: ufshpb: Cache HPB Control mode on init Avri Altman
2021-03-22 8:10 ` [PATCH v6 02/10] scsi: ufshpb: Add host control mode support to rsp_upiu Avri Altman
2021-03-24 3:31 ` Zang Leigang
2021-03-24 3:59 ` Can Guo
2021-03-24 12:44 ` Avri Altman
2021-03-22 8:10 ` [PATCH v6 03/10] scsi: ufshpb: Add region's reads counter Avri Altman
2021-03-24 9:25 ` Can Guo
2021-03-24 11:28 ` Avri Altman
2021-03-27 8:02 ` Avri Altman
2021-03-22 8:10 ` [PATCH v6 04/10] scsi: ufshpb: Make eviction depends on region's reads Avri Altman
2021-03-25 5:34 ` Can Guo
2021-03-25 5:56 ` Avri Altman
2021-03-22 8:10 ` [PATCH v6 05/10] scsi: ufshpb: Region inactivation in host mode Avri Altman
2021-03-22 8:10 ` [PATCH v6 06/10] scsi: ufshpb: Add hpb dev reset response Avri Altman
2021-03-22 8:10 ` [PATCH v6 07/10] scsi: ufshpb: Add "Cold" regions timer Avri Altman
2021-03-22 8:10 ` [PATCH v6 08/10] scsi: ufshpb: Limit the number of inflight map requests Avri Altman
2021-03-22 8:10 ` [PATCH v6 09/10] scsi: ufshpb: Add support for host control mode Avri Altman
2021-03-22 8:10 ` [PATCH v6 10/10] scsi: ufshpb: Make host mode parameters configurable Avri Altman
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