4 Contact: Dan Williams <dan.j.williams@intel.com>
7 The libnvdimm sub-system implements a common sysfs interface for
8 platform nvdimm resources. See Documentation/driver-api/nvdimm/.
10 What: /sys/bus/event_source/devices/nmemX/format
13 Contact: Kajol Jain <kjain@linux.ibm.com>
14 Description: (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).
18 Each attribute under this group defines a bit range of the
19 perf_event_attr.config. Supported attribute is listed
21 event = "config:0-4" - event ID
24 ctl_res_cnt = "event=0x1"
26 What: /sys/bus/event_source/devices/nmemX/events
29 Contact: Kajol Jain <kjain@linux.ibm.com>
30 Description: (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.
38 What: /sys/bus/event_source/devices/nmemX/cpumask
41 Contact: Kajol Jain <kjain@linux.ibm.com>
42 Description: (RO) This sysfs file exposes the cpumask which is designated to
43 to retrieve nvdimm pmu event counter data.
45 What: /sys/bus/nd/devices/nmemX/cxl/id
48 Contact: Dave Jiang <dave.jiang@intel.com>
49 Description: (RO) Show the id (serial) of the device. This is CXL specific.
51 What: /sys/bus/nd/devices/nmemX/cxl/provider
54 Contact: Dave Jiang <dave.jiang@intel.com>
55 Description: (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.