| Message ID | 20231023203643.3209592-4-bvanassche@acm.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Support disabling fair tag sharing | expand |
> Disable the block layer fair tag sharing algorithm because it > significantly reduces performance of UFS devices with a maximum queue > depth of 32. > > Cc: Christoph Hellwig <hch@lst.de> > Cc: Martin K. Petersen <martin.petersen@oracle.com> > Cc: Ming Lei <ming.lei@redhat.com> > Cc: Keith Busch <kbusch@kernel.org> > Cc: Damien Le Moal <damien.lemoal@opensource.wdc.com> > Cc: Yu Kuai <yukuai1@huaweicloud.com> > Cc: Ed Tsai <ed.tsai@mediatek.com> > Signed-off-by: Bart Van Assche <bvanassche@acm.org> Reviewed-by: Avri Altman <avri.altman@wdc.com> > --- > drivers/ufs/core/ufshcd.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c > index c2df07545f96..ed04d1263e02 100644 > --- a/drivers/ufs/core/ufshcd.c > +++ b/drivers/ufs/core/ufshcd.c > @@ -8866,6 +8866,7 @@ static const struct scsi_host_template > ufshcd_driver_template = { > .max_host_blocked = 1, > .track_queue_depth = 1, > .skip_settle_delay = 1, > + .disable_fair_tag_sharing = 1, > .sdev_groups = ufshcd_driver_groups, > .rpm_autosuspend_delay = RPM_AUTOSUSPEND_DELAY_MS, > };
diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c index c2df07545f96..ed04d1263e02 100644 --- a/drivers/ufs/core/ufshcd.c +++ b/drivers/ufs/core/ufshcd.c @@ -8866,6 +8866,7 @@ static const struct scsi_host_template ufshcd_driver_template = { .max_host_blocked = 1, .track_queue_depth = 1, .skip_settle_delay = 1, + .disable_fair_tag_sharing = 1, .sdev_groups = ufshcd_driver_groups, .rpm_autosuspend_delay = RPM_AUTOSUSPEND_DELAY_MS, };
Disable the block layer fair tag sharing algorithm because it significantly reduces performance of UFS devices with a maximum queue depth of 32. Cc: Christoph Hellwig <hch@lst.de> Cc: Martin K. Petersen <martin.petersen@oracle.com> Cc: Ming Lei <ming.lei@redhat.com> Cc: Keith Busch <kbusch@kernel.org> Cc: Damien Le Moal <damien.lemoal@opensource.wdc.com> Cc: Yu Kuai <yukuai1@huaweicloud.com> Cc: Ed Tsai <ed.tsai@mediatek.com> Signed-off-by: Bart Van Assche <bvanassche@acm.org> --- drivers/ufs/core/ufshcd.c | 1 + 1 file changed, 1 insertion(+)