On Tue, Oct 24, 2017 at 12:59:56PM +1030, memeka wrote:
> Enable support for ARM Performance Monitoring Units available in Cortex-A7
> and Cortex-A15 CPU cores for Exynos54xx SoCs (5410, 5420 and 5422/5800).
>
> The PMUs interrupts are defined in the common exynos54xx.dtsi device tree,
> but the PMUs are enabled and have their interrupt CPU affinity defined
> next to each SoC's cpus node.
>
> Tested with perf on Odroid XU4 (Exynos5422):
> armv7_cortex_a7 PMU driver: 5 counters available
> armv7_cortex_a15 PMU driver: 7 counters available
>
> Suggested-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
> Signed-off-by: Marian Mihailescu <mihailescu2m@xxxxxxxxx>
> Signed-off-by: Willy Wolff <willy.mh.wolff@xxxxxxxxx>
>
> ---
> Changes since v1:
> - both Cortex-A7 and Cortex-A15 PMUs are now defined in exynos54xx.dtsi
> - CPU affinity is defined for each SoC *after* the cpus node entry
> - PMUs are disabled in exynos54xx.dtsi and enabled for each SoC
> - cpus labels have been fixed in the interrupt-affinity property for
> Exynos5410 and Exynos5420 SoCs
>
> ---
> arch/arm/boot/dts/exynos5410.dtsi | 8 ++++++++
> arch/arm/boot/dts/exynos5420-cpus.dtsi | 16 ++++++++++++++++
> arch/arm/boot/dts/exynos5422-cpus.dtsi | 16 ++++++++++++++++
> arch/arm/boot/dts/exynos54xx.dtsi | 20 ++++++++++++++++++++
> 4 files changed, 60 insertions(+)
>
> diff --git a/arch/arm/boot/dts/exynos5410.dtsi b/arch/arm/boot/dts/exynos5410.dtsi
> index 7eab4bc..f42b04b 100644
> --- a/arch/arm/boot/dts/exynos5410.dtsi
> +++ b/arch/arm/boot/dts/exynos5410.dtsi
> @@ -428,4 +428,12 @@
> samsung,syscon-phandle = <&pmu_system_controller>;
> };
>
> +&arm_a15_pmu {
Please put it in alphabetical order (against existing overridings by
labels).
> + interrupt-affinity = <&cpu0>,
> + <&cpu1>,
Please align with <&cpiu0> before. Makes code easier to read.
> + <&cpu2>,
> + <&cpu3>;
> + status = "okay";
> +};
> +
> #include "exynos5410-pinctrl.dtsi"
> diff --git a/arch/arm/boot/dts/exynos5420-cpus.dtsi b/arch/arm/boot/dts/exynos5420-cpus.dtsi
> index 5c052d7..518b7d8 100644
> --- a/arch/arm/boot/dts/exynos5420-cpus.dtsi
> +++ b/arch/arm/boot/dts/exynos5420-cpus.dtsi
> @@ -124,3 +124,19 @@
> };
> };
> };
> +
> +&arm_a7_pmu {
Ditto - order and alignment of continuation of lines.
> + interrupt-affinity = <&cpu4>,
> + <&cpu5>,
> + <&cpu4>,
> + <&cpu5>;
cpu6 and cpu7?
> + status = "okay";
> +};
> +
> +&arm_a15_pmu {
> + interrupt-affinity = <&cpu0>,
> + <&cpu1>,
> + <&cpu2>,
> + <&cpu3>;
> + status = "okay";
> +};
> diff --git a/arch/arm/boot/dts/exynos5422-cpus.dtsi b/arch/arm/boot/dts/exynos5422-cpus.dtsi
> index ab4c718..92676be 100644
> --- a/arch/arm/boot/dts/exynos5422-cpus.dtsi
> +++ b/arch/arm/boot/dts/exynos5422-cpus.dtsi
> @@ -131,3 +131,19 @@
> };
> };
> };
> +
> +&arm_a7_pmu {
> + interrupt-affinity = <&cpu0>,
> + <&cpu1>,
> + <&cpu2>,
> + <&cpu3>;
> + status = "okay";
> +};
> +
> +&arm_a15_pmu {
> + interrupt-affinity = <&cpu4>,
> + <&cpu5>,
> + <&cpu6>,
> + <&cpu7>;
> + status = "okay";
> +};
> diff --git a/arch/arm/boot/dts/exynos54xx.dtsi b/arch/arm/boot/dts/exynos54xx.dtsi
> index 8ca4fef..f0bd27d 100644
> --- a/arch/arm/boot/dts/exynos54xx.dtsi
> +++ b/arch/arm/boot/dts/exynos54xx.dtsi
> @@ -79,6 +79,26 @@
> interrupts = <GIC_SPI 42 IRQ_TYPE_LEVEL_HIGH>;
> };
>
> + arm_a7_pmu: arm-a7-pmu {
> + compatible = "arm,cortex-a7-pmu";
> + interrupt-parent = <&gic>;
> + interrupts = <GIC_SPI 160 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 161 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 162 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 163 IRQ_TYPE_LEVEL_HIGH>;
Lines alignment.
Best regards,
Krzysztof
> + status = "disabled";
> + };
> +
> + arm_a15_pmu: arm-a15-pmu {
> + compatible = "arm,cortex-a15-pmu";
> + interrupt-parent = <&combiner>;
> + interrupts = <1 2>,
> + <7 0>,
> + <16 6>,
> + <19 2>;
> + status = "disabled";
> + };
> +
> sss: sss@10830000 {
> compatible = "samsung,exynos4210-secss";
> reg = <0x10830000 0x300>;
> --
> 2.7.4
>
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