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- What: /sys/bus/event_source/devices/<dev>/caps
- Date: May 2022
- KernelVersion: 5.19
- Contact: Linux kernel mailing list <[email protected]>
- Description:
- Attribute group to describe the capabilities exposed
- for a particular pmu. Each attribute of this group can
- expose information specific to a PMU, say pmu_name, so that
- userspace can understand some of the feature which the
- platform specific PMU supports.
- One of the example available capability in supported platform
- like Intel is pmu_name, which exposes underlying CPU name known
- to the PMU driver.
- Example output in powerpc:
- grep . /sys/bus/event_source/devices/cpu/caps/*
- /sys/bus/event_source/devices/cpu/caps/pmu_name:POWER9
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