diff mbox series

[v2,1/2] memory: samsung: exynos5422-dmc: Adjust polling interval and uptreshold

Message ID 20200710191122.11029-2-lukasz.luba@arm.com (mailing list archive)
State Mainlined
Commit 74ca9e46107879551e2625bfbfbfd71da1881b82
Headers show
Series Exynos5422 DMC: adjust to new devfreq monitoring mechanism | expand

Commit Message

Lukasz Luba July 10, 2020, 7:11 p.m. UTC 
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>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Lukasz Luba <lukasz.luba@arm.com>
---
 drivers/memory/samsung/exynos5422-dmc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

Krzysztof Kozlowski July 20, 2020, 2:46 p.m. UTC | #1 
On Fri, Jul 10, 2020 at 08:11:21PM +0100, Lukasz Luba wrote:
> 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>
> Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
> Signed-off-by: Lukasz Luba <lukasz.luba@arm.com>
> ---
>  drivers/memory/samsung/exynos5422-dmc.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)

Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>

Feel free to take it via devfreq tree.

Best regards,
Krzysztof
Lukasz Luba July 27, 2020, 8:20 a.m. UTC | #2 
On 7/20/20 3:46 PM, Krzysztof Kozlowski wrote:
> On Fri, Jul 10, 2020 at 08:11:21PM +0100, Lukasz Luba wrote:
>> 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>
>> Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
>> Signed-off-by: Lukasz Luba <lukasz.luba@arm.com>
>> ---
>>   drivers/memory/samsung/exynos5422-dmc.c | 4 ++--
>>   1 file changed, 2 insertions(+), 2 deletions(-)
> 
> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
> 
> Feel free to take it via devfreq tree.
> 
> Best regards,
> Krzysztof
> 

Thank you Krzysztof for the review.

Regards,
Lukasz
diff mbox series

Patch

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;
 	}