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| author | Nitin Rawat <nitin.rawat@oss.qualcomm.com> | 2026-08-25 20:22:03 +0530 |
|---|---|---|
| committer | Martin K. Petersen (Oracle) <mkp@kernel.org> | 2026-08-28 21:55:10 -0400 |
| commit | b2ededcb271b37510366cbf6853be193d681ba5c (patch) | |
| tree | a9c3d65d62495661fa730d7195dd7059abebcc45 | |
| parent | a3756f53baf1830c65149cfcb81cb96360976cf3 (diff) | |
| download | linux-next-b2ededcb271b37510366cbf6853be193d681ba5c.tar.gz linux-next-b2ededcb271b37510366cbf6853be193d681ba5c.zip | |
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 <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: Nitin Rawat <nitin.rawat@oss.qualcomm.com>
Link: https://patch.msgid.link/20260825145203.265579-3-nitin.rawat@oss.qualcomm.com
Signed-off-by: Martin K. Petersen (Oracle) <mkp@kernel.org>
| -rw-r--r-- | drivers/ufs/host/ufs-qcom.c | 2 |
1 files changed, 1 insertions, 1 deletions
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; } |