| What: /sys/bus/event_source/devices/<dev>/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 |