1ed8c39d4SMauro Carvalho ChehabWhat: nvdimm 2ed8c39d4SMauro Carvalho ChehabDate: July 2020 3ed8c39d4SMauro Carvalho ChehabKernelVersion: 5.8 4ed8c39d4SMauro Carvalho ChehabContact: Dan Williams <dan.j.williams@intel.com> 5ed8c39d4SMauro Carvalho ChehabDescription: 6ed8c39d4SMauro Carvalho Chehab 748001ea5SDan WilliamsThe libnvdimm sub-system implements a common sysfs interface for 848001ea5SDan Williamsplatform nvdimm resources. See Documentation/driver-api/nvdimm/. 92bec6d9aSKajol Jain 102bec6d9aSKajol JainWhat: /sys/bus/event_source/devices/nmemX/format 112bec6d9aSKajol JainDate: February 2022 122bec6d9aSKajol JainKernelVersion: 5.18 132bec6d9aSKajol JainContact: Kajol Jain <kjain@linux.ibm.com> 142bec6d9aSKajol JainDescription: (RO) Attribute group to describe the magic bits 152bec6d9aSKajol Jain that go into perf_event_attr.config for a particular pmu. 162bec6d9aSKajol Jain (See ABI/testing/sysfs-bus-event_source-devices-format). 172bec6d9aSKajol Jain 182bec6d9aSKajol Jain Each attribute under this group defines a bit range of the 192bec6d9aSKajol Jain perf_event_attr.config. Supported attribute is listed 202bec6d9aSKajol Jain below:: 21*16182e4aSJonathan Corbet 222bec6d9aSKajol Jain event = "config:0-4" - event ID 232bec6d9aSKajol Jain 242bec6d9aSKajol Jain For example:: 25*16182e4aSJonathan Corbet 262bec6d9aSKajol Jain ctl_res_cnt = "event=0x1" 272bec6d9aSKajol Jain 282bec6d9aSKajol JainWhat: /sys/bus/event_source/devices/nmemX/events 292bec6d9aSKajol JainDate: February 2022 302bec6d9aSKajol JainKernelVersion: 5.18 312bec6d9aSKajol JainContact: Kajol Jain <kjain@linux.ibm.com> 322bec6d9aSKajol JainDescription: (RO) Attribute group to describe performance monitoring events 332bec6d9aSKajol Jain for the nvdimm memory device. Each attribute in this group 342bec6d9aSKajol Jain describes a single performance monitoring event supported by 352bec6d9aSKajol Jain this nvdimm pmu. The name of the file is the name of the event. 362bec6d9aSKajol Jain (See ABI/testing/sysfs-bus-event_source-devices-events). A 372bec6d9aSKajol Jain listing of the events supported by a given nvdimm provider type 382bec6d9aSKajol Jain can be found in Documentation/driver-api/nvdimm/$provider. 392bec6d9aSKajol Jain 402bec6d9aSKajol JainWhat: /sys/bus/event_source/devices/nmemX/cpumask 412bec6d9aSKajol JainDate: February 2022 422bec6d9aSKajol JainKernelVersion: 5.18 432bec6d9aSKajol JainContact: Kajol Jain <kjain@linux.ibm.com> 442bec6d9aSKajol JainDescription: (RO) This sysfs file exposes the cpumask which is designated to 452bec6d9aSKajol Jain to retrieve nvdimm pmu event counter data. 46bd429e53SDave Jiang 47bd429e53SDave JiangWhat: /sys/bus/nd/devices/nmemX/cxl/id 48bd429e53SDave JiangDate: November 2022 49bd429e53SDave JiangKernelVersion: 6.2 50bd429e53SDave JiangContact: Dave Jiang <dave.jiang@intel.com> 51bd429e53SDave JiangDescription: (RO) Show the id (serial) of the device. This is CXL specific. 52452996faSDave Jiang 53452996faSDave JiangWhat: /sys/bus/nd/devices/nmemX/cxl/provider 54452996faSDave JiangDate: November 2022 55452996faSDave JiangKernelVersion: 6.2 56452996faSDave JiangContact: Dave Jiang <dave.jiang@intel.com> 57452996faSDave JiangDescription: (RO) Shows the CXL bridge device that ties to a CXL memory device 58452996faSDave Jiang to this NVDIMM device. I.e. the parent of the device returned is 59452996faSDave Jiang a /sys/bus/cxl/devices/memX instance. 60