[PATCH 08/11] ARM: dts: Prepare Actions Semi S500 and LeMaker Guitar
From: mark.rutland@arm.com (Mark Rutland)
Date: 2017-02-15 17:36:25
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On Wed, Feb 15, 2017 at 06:28:31PM +0100, Andreas F?rber wrote:
quoted hunk ↗ jump to hunk
Hi Mark, Am 15.02.2017 um 18:07 schrieb Mark Rutland:quoted
On Wed, Feb 15, 2017 at 05:55:25PM +0100, Andreas F?rber wrote:quoted
+ arm-pmu { + compatible = "arm,cortex-a9-pmu"; + interrupts = <GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 5 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>; + };Please add an interrupt-affinity property, as described in Documentation/devicetree/bindings/arm/pmu.txtThat's not in the vendor tree... My guess is it would be like this then?diff --git a/arch/arm/boot/dts/s500.dtsi b/arch/arm/boot/dts/s500.dtsi index ee93984..959c6e3 100644 --- a/arch/arm/boot/dts/s500.dtsi +++ b/arch/arm/boot/dts/s500.dtsi@@ -82,7 +82,8 @@ <GIC_SPI 5 IRQ_TYPE_LEVEL_HIGH>, <GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>, <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>; - }; + interrupt-affinity = <&cpu0>, <&cpu1>, <&cpu2>, <&cpu3>; + };
Assuming that's how they're wired up, yes. You should be able to test this by using perf record in per-cpu mode, on an application with its affintiy fixed to a particular CPU, and verifying that overflow interrupts are recevied on the same CPU. Thanks, Mark.