projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| ed8c39d4 MCC |
1 | What: nvdimm |
| 2 | Date: July 2020 | |
| 3 | KernelVersion: 5.8 | |
| 4 | Contact: Dan Williams <dan.j.williams@intel.com> | |
| 5 | Description: | |
| 6 | ||
| 48001ea5 DW |
7 | The libnvdimm sub-system implements a common sysfs interface for |
| 8 | platform nvdimm resources. See Documentation/driver-api/nvdimm/. | |
| 2bec6d9a KJ |
9 | |
| 10 | What: /sys/bus/event_source/devices/nmemX/format | |
| 11 | Date: February 2022 | |
| 12 | KernelVersion: 5.18 | |
| 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). | |
| 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 | ||
| 26 | What: /sys/bus/event_source/devices/nmemX/events | |
| 27 | Date: February 2022 | |
| 28 | KernelVersion: 5.18 | |
| 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. | |
| 37 | ||
| 38 | What: /sys/bus/event_source/devices/nmemX/cpumask | |
| 39 | Date: February 2022 | |
| 40 | KernelVersion: 5.18 | |
| 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. | |
| bd429e53 DJ |
44 | |
| 45 | What: /sys/bus/nd/devices/nmemX/cxl/id | |
| 46 | Date: November 2022 | |
| 47 | KernelVersion: 6.2 | |
| 48 | Contact: Dave Jiang <dave.jiang@intel.com> | |
| 49 | Description: (RO) Show the id (serial) of the device. This is CXL specific. | |
| 452996fa DJ |
50 | |
| 51 | What: /sys/bus/nd/devices/nmemX/cxl/provider | |
| 52 | Date: November 2022 | |
| 53 | KernelVersion: 6.2 | |
| 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. |