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.
44
45What:		/sys/bus/nd/devices/nmemX/cxl/id
46Date:		November 2022
47KernelVersion:	6.2
48Contact:	Dave Jiang <dave.jiang@intel.com>
49Description:	(RO) Show the id (serial) of the device. This is CXL specific.
50
51What:		/sys/bus/nd/devices/nmemX/cxl/provider
52Date:		November 2022
53KernelVersion:	6.2
54Contact:	Dave Jiang <dave.jiang@intel.com>
55Description:	(RO) Shows the CXL bridge device that ties to a CXL memory device
56		to this NVDIMM device. I.e. the parent of the device returned is
57		a /sys/bus/cxl/devices/memX instance.
58