| What: nvdimm |
| Date: July 2020 |
| KernelVersion: 5.8 |
| Contact: Dan Williams <dan.j.williams@intel.com> |
| Description: |
| |
| The libnvdimm sub-system implements a common sysfs interface for |
| platform nvdimm resources. See Documentation/driver-api/nvdimm/. |
| |
| What: /sys/bus/event_source/devices/nmemX/format |
| Date: February 2022 |
| KernelVersion: 5.18 |
| Contact: Kajol Jain <kjain@linux.ibm.com> |
| Description: (RO) Attribute group to describe the magic bits |
| that go into perf_event_attr.config for a particular pmu. |
| (See ABI/testing/sysfs-bus-event_source-devices-format). |
| |
| Each attribute under this group defines a bit range of the |
| perf_event_attr.config. Supported attribute is listed |
| below:: |
| event = "config:0-4" - event ID |
| |
| For example:: |
| ctl_res_cnt = "event=0x1" |
| |
| What: /sys/bus/event_source/devices/nmemX/events |
| Date: February 2022 |
| KernelVersion: 5.18 |
| Contact: Kajol Jain <kjain@linux.ibm.com> |
| Description: (RO) Attribute group to describe performance monitoring events |
| for the nvdimm memory device. Each attribute in this group |
| describes a single performance monitoring event supported by |
| this nvdimm pmu. The name of the file is the name of the event. |
| (See ABI/testing/sysfs-bus-event_source-devices-events). A |
| listing of the events supported by a given nvdimm provider type |
| can be found in Documentation/driver-api/nvdimm/$provider. |
| |
| What: /sys/bus/event_source/devices/nmemX/cpumask |
| Date: February 2022 |
| KernelVersion: 5.18 |
| Contact: Kajol Jain <kjain@linux.ibm.com> |
| Description: (RO) This sysfs file exposes the cpumask which is designated to |
| to retrieve nvdimm pmu event counter data. |
| |
| What: /sys/bus/nd/devices/nmemX/cxl/id |
| Date: November 2022 |
| KernelVersion: 6.2 |
| Contact: Dave Jiang <dave.jiang@intel.com> |
| Description: (RO) Show the id (serial) of the device. This is CXL specific. |
| |
| What: /sys/bus/nd/devices/nmemX/cxl/provider |
| Date: November 2022 |
| KernelVersion: 6.2 |
| Contact: Dave Jiang <dave.jiang@intel.com> |
| Description: (RO) Shows the CXL bridge device that ties to a CXL memory device |
| to this NVDIMM device. I.e. the parent of the device returned is |
| a /sys/bus/cxl/devices/memX instance. |
