Merge tag 'arm64-perf' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux (b6ae4055) · Commits · 戴 / test

Pull arm64 perf updates from Will Deacon: "The main addition here is support for Broadcom's Vulcan core using the architected ID registers for discovering supported events. - Support for the PMU in Broadcom's Vulcan CPU - Dynamic event detection using the PMCEIDn_EL0 ID registers" * tag 'arm64-perf' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: perf: don't expose CHAIN event in sysfs arm64/perf: Add Broadcom Vulcan PMU support arm64/perf: Filter common events based on PMCEIDn_EL0 arm64/perf: Access pmu register using <read/write>_sys_reg arm64/perf: Define complete ARMv8 recommended implementation defined events arm64/perf: Changed events naming as per the ARM ARM arm64: dts: Add Broadcom Vulcan PMU in dts Documentation: arm64: pmu: Add Broadcom Vulcan PMU binding

Documentation/devicetree/bindings/arm/pmu.txt

+2 −1

Original line number	Diff line number	Diff line
		@@ -22,10 +22,11 @@ Required properties:
		"arm,arm11mpcore-pmu"
		"arm,arm1176-pmu"
		"arm,arm1136-pmu"
		"brcm,vulcan-pmu"
		"cavium,thunder-pmu"
		"qcom,scorpion-pmu"
		"qcom,scorpion-mp-pmu"
		"qcom,krait-pmu"
		"cavium,thunder-pmu"
		- interrupts : 1 combined interrupt or 1 per core. If the interrupt is a per-cpu
		interrupt (PPI) then 1 interrupt should be specified.

arch/arm64/boot/dts/broadcom/vulcan.dtsi

+1 −1

Original line number	Diff line number	Diff line
		@@ -86,7 +86,7 @@
		};

		pmu {
		compatible = "arm,armv8-pmuv3";
		compatible = "brcm,vulcan-pmu", "arm,armv8-pmuv3";
		interrupts = <GIC_PPI 7 IRQ_TYPE_LEVEL_HIGH>; /* PMU overflow */
		};

arch/arm64/kernel/perf_event.c

+365 −188

File changed.

Preview size limit exceeded, changes collapsed.

include/linux/perf/arm_pmu.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -105,6 +105,8 @@ struct arm_pmu {
		struct mutex reserve_mutex;
		u64 max_period;
		bool secure_access; /* 32-bit ARM only */
		#define ARMV8_PMUV3_MAX_COMMON_EVENTS 0x40
		DECLARE_BITMAP(pmceid_bitmap, ARMV8_PMUV3_MAX_COMMON_EVENTS);
		struct platform_device *plat_device;
		struct pmu_hw_events __percpu *hw_events;
		struct notifier_block hotplug_nb;

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