[PATCH 1/2] memory: samsung: exynos5422-dmc: Adjust polling interval and uptreshold

Lukasz Luba
2020-07-08T15:34:48Z

In order to react faster and make better decisions under some workloads,
benchmarking the memory subsystem behavior, adjust the polling interval
and upthreshold value used by the simple_ondemand governor.

Reported-by: Willy Wolff <willy.mh.wolff.ml@gmail.com>
Signed-off-by: Lukasz Luba <lukasz.luba@arm.com>
---
drivers/memory/samsung/exynos5422-dmc.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/memory/samsung/exynos5422-dmc.c b/drivers/memory/samsung/exynos5422-dmc.c
index 93e9c2429c0d..e03ee35f0ab5 100644
--- a/drivers/memory/samsung/exynos5422-dmc.c
+++ b/drivers/memory/samsung/exynos5422-dmc.c
@@ -1466,10 +1466,10 @@ static int exynos5_dmc_probe(struct platform_device *pdev)
* Setup default thresholds for the devfreq governor.
* The values are chosen based on experiments.
*/
- dmc->gov_data.upthreshold = 30;
+ dmc->gov_data.upthreshold = 10;
dmc->gov_data.downdifferential = 5;

- exynos5_dmc_df_profile.polling_ms = 500;
+ exynos5_dmc_df_profile.polling_ms = 100;
}

--
2.17.1