CONFIG_ARM_CCI5xx_PMU: support CCI-500/CCI-550

General informations

The Linux kernel configuration item CONFIG_ARM_CCI5xx_PMU has multiple definitions:

support CCI-500/CCI-550 found in drivers/perf/Kconfig

The configuration item CONFIG_ARM_CCI5xx_PMU:

• prompt: support CCI-500/CCI-550
• type: bool
• depends on: CONFIG_ARM_CCI_PMU
• defined in drivers/perf/Kconfig
• found in Linux kernels: 4.18–4.20, 5.0–5.19, 6.0–6.12

Help text

CCI-500/CCI-550 both provide 8 independent event counters, which can count events pertaining to the slave/master interfaces as well as the internal events to the CCI.

ARM CCI-500/CCI-550 PMU support found in drivers/perf/Kconfig

The configuration item CONFIG_ARM_CCI5xx_PMU:

• prompt: ARM CCI-500/CCI-550 PMU support
• type: bool
• depends on: ( CONFIG_ARM && CONFIG_CPU_V7 ) || CONFIG_ARM64
• defined in drivers/perf/Kconfig
• found in Linux kernels: 4.17

Help text

Support for PMU events monitoring on the ARM CCI-500/CCI-550 cache coherent interconnects. Both of them provide 8 independent event counters, which can count events pertaining to the slave/master interfaces as well as the internal events to the CCI.

If unsure, say Y

ARM CCI-500/CCI-550 PMU support found in drivers/bus/Kconfig

The configuration item CONFIG_ARM_CCI5xx_PMU:

• prompt: ARM CCI-500/CCI-550 PMU support
• type: bool
• depends on: (( CONFIG_ARM && CONFIG_CPU_V7 ) || CONFIG_ARM64 ) && ( CONFIG_PERF_EVENTS )
• defined in drivers/bus/Kconfig
• found in Linux kernels: 4.6–4.16

Help text

Support for PMU events monitoring on the ARM CCI-500/CCI-550 cache coherent interconnects. Both of them provide 8 independent event counters, which can count events pertaining to the slave/master interfaces as well as the internal events to the CCI.

If unsure, say Y

Hardware

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The data is retrived from:

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• Linux Kernel Driver DataBase (LKDDb)

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