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linux-yocto/Documentation/ABI/testing/sysfs-bus-event_source-devices-caps
Athira Rajeev 999d7c47a0 docs: ABI: sysfs-bus-event_source-devices: Document sysfs caps entry for PMU 
Details is added about "caps" attribute group in the ABI documentation.
This is used to expose some of the PMU attributes in "caps"
directory under : /sys/bus/event_source/devices/<dev>/. The dev/caps
will contain information about features that platform specific PMU
supports.

Signed-off-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220520084630.15181-2-atrajeev@linux.vnet.ibm.com
2022-07-18 10:39:54 +10:00

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What: /sys/bus/event_source/devices//caps Date: May 2022 KernelVersion: 5.19 Contact: Linux kernel mailing list linux-kernel@vger.kernel.org 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