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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 event = "config:0-4" - event ID
22
23 For example::
24 ctl_res_cnt = "event=0x1"
25
26What: /sys/bus/event_source/devices/nmemX/events
27Date: February 2022
28KernelVersion: 5.18
29Contact: Kajol Jain <kjain@linux.ibm.com>
30Description: (RO) Attribute group to describe performance monitoring events
31 for the nvdimm memory device. Each attribute in this group
32 describes a single performance monitoring event supported by
33 this nvdimm pmu. The name of the file is the name of the event.
34 (See ABI/testing/sysfs-bus-event_source-devices-events). A
35 listing of the events supported by a given nvdimm provider type
36 can be found in Documentation/driver-api/nvdimm/$provider.
37
38What: /sys/bus/event_source/devices/nmemX/cpumask
39Date: February 2022
40KernelVersion: 5.18
41Contact: Kajol Jain <kjain@linux.ibm.com>
42Description: (RO) This sysfs file exposes the cpumask which is designated to
43 to retrieve nvdimm pmu event counter data.