| Message ID | 20200219095828.8063-2-lukasz.luba@arm.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | Enable Odroid-XU3/4 to use Energy Model and Energy Aware Scheduler | expand |
My apologizes for the mistake in the subject. It should be "PATCH v2 1/2" (mistake in script arguments while sending). The same applies to the second patch, should be "PATCH v2 2/2". Regards, Lukasz On 2/19/20 9:58 AM, lukasz.luba@arm.com wrote: > From: Lukasz Luba <lukasz.luba@arm.com> > > To use Energy Aware Scheduler (EAS) the Energy Model (EM) should be > registered for CPUs. Add dynamic-power-coefficient into CPU nodes which > let CPUFreq subsystem register the EM structures. This will increase > energy efficiency of big.LITTLE platforms. > > The 'dynamic-power-coefficient' values have been obtained experimenting > with different workloads. The power measurements taken from big CPU > Cluster and LITTLE CPU Cluster has been compared with official documents > and synthetic workloads estimations. The effective power ratio between > Cortex-A7 and Cortex-A15 CPUs (~3x) is also aligned with documentation. > > Signed-off-by: Lukasz Luba <lukasz.luba@arm.com> > --- > arch/arm/boot/dts/exynos5422-cpus.dtsi | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/arch/arm/boot/dts/exynos5422-cpus.dtsi b/arch/arm/boot/dts/exynos5422-cpus.dtsi > index 1b8605cf2407..4b641b9b8179 100644 > --- a/arch/arm/boot/dts/exynos5422-cpus.dtsi > +++ b/arch/arm/boot/dts/exynos5422-cpus.dtsi > @@ -31,6 +31,7 @@ > operating-points-v2 = <&cluster_a7_opp_table>; > #cooling-cells = <2>; /* min followed by max */ > capacity-dmips-mhz = <539>; > + dynamic-power-coefficient = <90>; > }; > > cpu1: cpu@101 { > @@ -43,6 +44,7 @@ > operating-points-v2 = <&cluster_a7_opp_table>; > #cooling-cells = <2>; /* min followed by max */ > capacity-dmips-mhz = <539>; > + dynamic-power-coefficient = <90>; > }; > > cpu2: cpu@102 { > @@ -55,6 +57,7 @@ > operating-points-v2 = <&cluster_a7_opp_table>; > #cooling-cells = <2>; /* min followed by max */ > capacity-dmips-mhz = <539>; > + dynamic-power-coefficient = <90>; > }; > > cpu3: cpu@103 { > @@ -67,6 +70,7 @@ > operating-points-v2 = <&cluster_a7_opp_table>; > #cooling-cells = <2>; /* min followed by max */ > capacity-dmips-mhz = <539>; > + dynamic-power-coefficient = <90>; > }; > > cpu4: cpu@0 { > @@ -79,6 +83,7 @@ > operating-points-v2 = <&cluster_a15_opp_table>; > #cooling-cells = <2>; /* min followed by max */ > capacity-dmips-mhz = <1024>; > + dynamic-power-coefficient = <310>; > }; > > cpu5: cpu@1 { > @@ -91,6 +96,7 @@ > operating-points-v2 = <&cluster_a15_opp_table>; > #cooling-cells = <2>; /* min followed by max */ > capacity-dmips-mhz = <1024>; > + dynamic-power-coefficient = <310>; > }; > > cpu6: cpu@2 { > @@ -103,6 +109,7 @@ > operating-points-v2 = <&cluster_a15_opp_table>; > #cooling-cells = <2>; /* min followed by max */ > capacity-dmips-mhz = <1024>; > + dynamic-power-coefficient = <310>; > }; > > cpu7: cpu@3 { > @@ -115,6 +122,7 @@ > operating-points-v2 = <&cluster_a15_opp_table>; > #cooling-cells = <2>; /* min followed by max */ > capacity-dmips-mhz = <1024>; > + dynamic-power-coefficient = <310>; > }; > }; > }; >
diff --git a/arch/arm/boot/dts/exynos5422-cpus.dtsi b/arch/arm/boot/dts/exynos5422-cpus.dtsi index 1b8605cf2407..4b641b9b8179 100644 --- a/arch/arm/boot/dts/exynos5422-cpus.dtsi +++ b/arch/arm/boot/dts/exynos5422-cpus.dtsi @@ -31,6 +31,7 @@ operating-points-v2 = <&cluster_a7_opp_table>; #cooling-cells = <2>; /* min followed by max */ capacity-dmips-mhz = <539>; + dynamic-power-coefficient = <90>; }; cpu1: cpu@101 { @@ -43,6 +44,7 @@ operating-points-v2 = <&cluster_a7_opp_table>; #cooling-cells = <2>; /* min followed by max */ capacity-dmips-mhz = <539>; + dynamic-power-coefficient = <90>; }; cpu2: cpu@102 { @@ -55,6 +57,7 @@ operating-points-v2 = <&cluster_a7_opp_table>; #cooling-cells = <2>; /* min followed by max */ capacity-dmips-mhz = <539>; + dynamic-power-coefficient = <90>; }; cpu3: cpu@103 { @@ -67,6 +70,7 @@ operating-points-v2 = <&cluster_a7_opp_table>; #cooling-cells = <2>; /* min followed by max */ capacity-dmips-mhz = <539>; + dynamic-power-coefficient = <90>; }; cpu4: cpu@0 { @@ -79,6 +83,7 @@ operating-points-v2 = <&cluster_a15_opp_table>; #cooling-cells = <2>; /* min followed by max */ capacity-dmips-mhz = <1024>; + dynamic-power-coefficient = <310>; }; cpu5: cpu@1 { @@ -91,6 +96,7 @@ operating-points-v2 = <&cluster_a15_opp_table>; #cooling-cells = <2>; /* min followed by max */ capacity-dmips-mhz = <1024>; + dynamic-power-coefficient = <310>; }; cpu6: cpu@2 { @@ -103,6 +109,7 @@ operating-points-v2 = <&cluster_a15_opp_table>; #cooling-cells = <2>; /* min followed by max */ capacity-dmips-mhz = <1024>; + dynamic-power-coefficient = <310>; }; cpu7: cpu@3 { @@ -115,6 +122,7 @@ operating-points-v2 = <&cluster_a15_opp_table>; #cooling-cells = <2>; /* min followed by max */ capacity-dmips-mhz = <1024>; + dynamic-power-coefficient = <310>; }; }; };