From b2ededcb271b37510366cbf6853be193d681ba5c Mon Sep 17 00:00:00 2001 From: Nitin Rawat Date: Tue, 25 Aug 2026 20:22:03 +0530 Subject: scsi: ufs: ufs-qcom: Fix sequential read variance The current devfreq downdifferential threshold of 5% causes overly aggressive frequency downscaling, leading to performance degradation sometimes during sequential read workloads. Update the UFS devfreq downdifferential threshold to 65. This widens the hysteresis window and prevents overly aggressive downscaling, ensuring that frequency is maintained for loads above 5% and scaling down occurs only when utilization falls below this level, while scale-up still triggers above the 70% threshold. Reviewed-by: Konrad Dybcio Signed-off-by: Nitin Rawat Link: https://patch.msgid.link/20260825145203.265579-3-nitin.rawat@oss.qualcomm.com Signed-off-by: Martin K. Petersen (Oracle) --- drivers/ufs/host/ufs-qcom.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c index 8893ea7e4d84..b31c04b5461e 100644 --- a/drivers/ufs/host/ufs-qcom.c +++ b/drivers/ufs/host/ufs-qcom.c @@ -2291,7 +2291,7 @@ static void ufs_qcom_config_scaling_param(struct ufs_hba *hba, p->polling_ms = 60; p->timer = DEVFREQ_TIMER_DELAYED; d->upthreshold = 70; - d->downdifferential = 5; + d->downdifferential = 65; hba->clk_scaling.suspend_on_no_request = true; } -- cgit v1.2.3