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/. 9*2bec6d9aSKajol Jain 10*2bec6d9aSKajol JainWhat: /sys/bus/event_source/devices/nmemX/format 11*2bec6d9aSKajol JainDate: February 2022 12*2bec6d9aSKajol JainKernelVersion: 5.18 13*2bec6d9aSKajol JainContact: Kajol Jain <kjain@linux.ibm.com> 14*2bec6d9aSKajol JainDescription: (RO) Attribute group to describe the magic bits 15*2bec6d9aSKajol Jain that go into perf_event_attr.config for a particular pmu. 16*2bec6d9aSKajol Jain (See ABI/testing/sysfs-bus-event_source-devices-format). 17*2bec6d9aSKajol Jain 18*2bec6d9aSKajol Jain Each attribute under this group defines a bit range of the 19*2bec6d9aSKajol Jain perf_event_attr.config. Supported attribute is listed 20*2bec6d9aSKajol Jain below:: 21*2bec6d9aSKajol Jain event = "config:0-4" - event ID 22*2bec6d9aSKajol Jain 23*2bec6d9aSKajol Jain For example:: 24*2bec6d9aSKajol Jain ctl_res_cnt = "event=0x1" 25*2bec6d9aSKajol Jain 26*2bec6d9aSKajol JainWhat: /sys/bus/event_source/devices/nmemX/events 27*2bec6d9aSKajol JainDate: February 2022 28*2bec6d9aSKajol JainKernelVersion: 5.18 29*2bec6d9aSKajol JainContact: Kajol Jain <kjain@linux.ibm.com> 30*2bec6d9aSKajol JainDescription: (RO) Attribute group to describe performance monitoring events 31*2bec6d9aSKajol Jain for the nvdimm memory device. Each attribute in this group 32*2bec6d9aSKajol Jain describes a single performance monitoring event supported by 33*2bec6d9aSKajol Jain this nvdimm pmu. The name of the file is the name of the event. 34*2bec6d9aSKajol Jain (See ABI/testing/sysfs-bus-event_source-devices-events). A 35*2bec6d9aSKajol Jain listing of the events supported by a given nvdimm provider type 36*2bec6d9aSKajol Jain can be found in Documentation/driver-api/nvdimm/$provider. 37*2bec6d9aSKajol Jain 38*2bec6d9aSKajol JainWhat: /sys/bus/event_source/devices/nmemX/cpumask 39*2bec6d9aSKajol JainDate: February 2022 40*2bec6d9aSKajol JainKernelVersion: 5.18 41*2bec6d9aSKajol JainContact: Kajol Jain <kjain@linux.ibm.com> 42*2bec6d9aSKajol JainDescription: (RO) This sysfs file exposes the cpumask which is designated to 43*2bec6d9aSKajol Jain to retrieve nvdimm pmu event counter data. 44