> The tags allocation is limited by the fair sharing algorithm. It hurts > the performance for UFS devices, because the queue depth of general I/O > is reduced by half once the UFS send a control command. Ack. However, I think the decision of that should be of the platform owner, And not in the core driver. Thanks, Avri > > Signed-off-by: Ed Tsai <ed.tsai@xxxxxxxxxxxx> > --- > drivers/ufs/core/ufshcd.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c > index 17d7bb875fee..e96a50265285 100644 > --- a/drivers/ufs/core/ufshcd.c > +++ b/drivers/ufs/core/ufshcd.c > @@ -5149,6 +5149,9 @@ static int ufshcd_slave_configure(struct scsi_device > *sdev) > blk_queue_update_dma_pad(q, PRDT_DATA_BYTE_COUNT_PAD - 1); > if (hba->quirks & UFSHCD_QUIRK_4KB_DMA_ALIGNMENT) > blk_queue_update_dma_alignment(q, 4096 - 1); > + > + blk_queue_flag_clear(QUEUE_FLAG_FAIR_TAG_SHARING, q); > + > /* > * Block runtime-pm until all consumers are added. > * Refer ufshcd_setup_links(). > -- > 2.18.0
