1What: nvdimm 2Date: July 2020 3KernelVersion: 5.8 4Contact: Dan Williams <dan.j.williams@intel.com> 5Description: 6 7The libnvdimm sub-system implements a common sysfs interface for 8platform nvdimm resources. See Documentation/driver-api/nvdimm/. 9 10What: /sys/bus/event_source/devices/nmemX/format 11Date: February 2022 12KernelVersion: 5.18 13Contact: Kajol Jain <kjain@linux.ibm.com> 14Description: (RO) Attribute group to describe the magic bits 15 that go into perf_event_attr.config for a particular pmu. 16 (See ABI/testing/sysfs-bus-event_source-devices-format). 17 18 Each attribute under this group defines a bit range of the 19 perf_event_attr.config. Supported attribute is listed 20 below:: 21 22 event = "config:0-4" - event ID 23 24 For example:: 25 26 ctl_res_cnt = "event=0x1" 27 28What: /sys/bus/event_source/devices/nmemX/events 29Date: February 2022 30KernelVersion: 5.18 31Contact: Kajol Jain <kjain@linux.ibm.com> 32Description: (RO) Attribute group to describe performance monitoring events 33 for the nvdimm memory device. Each attribute in this group 34 describes a single performance monitoring event supported by 35 this nvdimm pmu. The name of the file is the name of the event. 36 (See ABI/testing/sysfs-bus-event_source-devices-events). A 37 listing of the events supported by a given nvdimm provider type 38 can be found in Documentation/driver-api/nvdimm/$provider. 39 40What: /sys/bus/event_source/devices/nmemX/cpumask 41Date: February 2022 42KernelVersion: 5.18 43Contact: Kajol Jain <kjain@linux.ibm.com> 44Description: (RO) This sysfs file exposes the cpumask which is designated to 45 to retrieve nvdimm pmu event counter data. 46 47What: /sys/bus/nd/devices/nmemX/cxl/id 48Date: November 2022 49KernelVersion: 6.2 50Contact: Dave Jiang <dave.jiang@intel.com> 51Description: (RO) Show the id (serial) of the device. This is CXL specific. 52 53What: /sys/bus/nd/devices/nmemX/cxl/provider 54Date: November 2022 55KernelVersion: 6.2 56Contact: Dave Jiang <dave.jiang@intel.com> 57Description: (RO) Shows the CXL bridge device that ties to a CXL memory device 58 to this NVDIMM device. I.e. the parent of the device returned is 59 a /sys/bus/cxl/devices/memX instance. 60