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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 v7 00/11] Add Host control mode to HPB
Date: Wed, 31 Mar 2021 10:39:41 +0300	[thread overview]
Message-ID: <20210331073952.102162-1-avri.altman@wdc.com> (raw)

v6 -> v7:
 - attend CanG's comments
 - add one more patch to transform set_dirty to iterate_rgn
 - rebase on Daejun's v32

v5 -> v6:
 - attend CanG's comments
 - rebase on Daejun's v29

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 V32 device-control HPB2.0 driver

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 (11):
  scsi: ufshpb: Cache HPB Control mode on init
  scsi: ufshpb: Add host control mode support to rsp_upiu
  scsi: ufshpb: Transform set_dirty to iterate_rgn
  scsi: ufshpb: Add 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                  | 568 ++++++++++++++++++++-
 drivers/scsi/ufs/ufshpb.h                  |  44 ++
 4 files changed, 663 insertions(+), 35 deletions(-)

-- 
2.25.1


             reply	other threads:[~2021-03-31  7:40 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-31  7:39 Avri Altman [this message]
2021-03-31  7:39 ` [PATCH v7 01/11] scsi: ufshpb: Cache HPB Control mode on init Avri Altman
2021-03-31  7:39 ` [PATCH v7 02/11] scsi: ufshpb: Add host control mode support to rsp_upiu Avri Altman
2021-03-31  7:39 ` [PATCH v7 03/11] scsi: ufshpb: Transform set_dirty to iterate_rgn Avri Altman
2021-03-31  7:39 ` [PATCH v7 04/11] scsi: ufshpb: Add reads counter Avri Altman
2021-03-31  7:39 ` [PATCH v7 05/11] scsi: ufshpb: Make eviction depends on region's reads Avri Altman
2021-03-31  7:39 ` [PATCH v7 06/11] scsi: ufshpb: Region inactivation in host mode Avri Altman
2021-04-06  4:53   ` Can Guo
2021-04-06  5:20     ` Avri Altman
2021-04-06  6:00       ` Can Guo
2021-04-06  6:16         ` Avri Altman
2021-04-06  6:26           ` Can Guo
2021-04-06  7:16             ` Avri Altman
2021-04-10  1:09               ` Avri Altman
2021-03-31  7:39 ` [PATCH v7 07/11] scsi: ufshpb: Add hpb dev reset response Avri Altman
2021-03-31  7:39 ` [PATCH v7 08/11] scsi: ufshpb: Add "Cold" regions timer Avri Altman
2021-03-31  7:39 ` [PATCH v7 09/11] scsi: ufshpb: Limit the number of inflight map requests Avri Altman
2021-03-31  7:39 ` [PATCH v7 10/11] scsi: ufshpb: Add support for host control mode Avri Altman
2021-03-31  7:39 ` [PATCH v7 11/11] scsi: ufshpb: Make host mode parameters configurable Avri Altman
     [not found] ` <CGME20210331074004epcas2p3e6d0b2d1bf0f43708902b2d5583069c4@epcms2p6>
2021-04-05  9:29   ` [PATCH v7 00/11] Add Host control mode to HPB Daejun Park

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