0001 What: nvdimm
0002 Date: July 2020
0003 KernelVersion: 5.8
0004 Contact: Dan Williams <dan.j.williams@intel.com>
0005 Description:
0006
0007 The libnvdimm sub-system implements a common sysfs interface for
0008 platform nvdimm resources. See Documentation/driver-api/nvdimm/.
0009
0010 What: /sys/bus/event_source/devices/nmemX/format
0011 Date: February 2022
0012 KernelVersion: 5.18
0013 Contact: Kajol Jain <kjain@linux.ibm.com>
0014 Description: (RO) Attribute group to describe the magic bits
0015 that go into perf_event_attr.config for a particular pmu.
0016 (See ABI/testing/sysfs-bus-event_source-devices-format).
0017
0018 Each attribute under this group defines a bit range of the
0019 perf_event_attr.config. Supported attribute is listed
0020 below::
0021 event = "config:0-4" - event ID
0022
0023 For example::
0024 ctl_res_cnt = "event=0x1"
0025
0026 What: /sys/bus/event_source/devices/nmemX/events
0027 Date: February 2022
0028 KernelVersion: 5.18
0029 Contact: Kajol Jain <kjain@linux.ibm.com>
0030 Description: (RO) Attribute group to describe performance monitoring events
0031 for the nvdimm memory device. Each attribute in this group
0032 describes a single performance monitoring event supported by
0033 this nvdimm pmu. The name of the file is the name of the event.
0034 (See ABI/testing/sysfs-bus-event_source-devices-events). A
0035 listing of the events supported by a given nvdimm provider type
0036 can be found in Documentation/driver-api/nvdimm/$provider.
0037
0038 What: /sys/bus/event_source/devices/nmemX/cpumask
0039 Date: February 2022
0040 KernelVersion: 5.18
0041 Contact: Kajol Jain <kjain@linux.ibm.com>
0042 Description: (RO) This sysfs file exposes the cpumask which is designated to
0043 to retrieve nvdimm pmu event counter data.
