> 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(-) >
The patches in this series look good to me. Reviewed-by: Daejun Park <daejun7.p...@samsung.com>
