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-rw-r--r--Documentation/ABI/testing/sysfs-bus-nvdimm35
1 files changed, 35 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-nvdimm b/Documentation/ABI/testing/sysfs-bus-nvdimm
index bff84a16812a..1c1f5acbf53d 100644
--- a/Documentation/ABI/testing/sysfs-bus-nvdimm
+++ b/Documentation/ABI/testing/sysfs-bus-nvdimm
@@ -6,3 +6,38 @@ Description:
The libnvdimm sub-system implements a common sysfs interface for
platform nvdimm resources. See Documentation/driver-api/nvdimm/.
+
+What: /sys/bus/event_source/devices/nmemX/format
+Date: February 2022
+KernelVersion: 5.18
+Contact: Kajol Jain <kjain@linux.ibm.com>
+Description: (RO) Attribute group to describe the magic bits
+ that go into perf_event_attr.config for a particular pmu.
+ (See ABI/testing/sysfs-bus-event_source-devices-format).
+
+ Each attribute under this group defines a bit range of the
+ perf_event_attr.config. Supported attribute is listed
+ below::
+ event = "config:0-4" - event ID
+
+ For example::
+ ctl_res_cnt = "event=0x1"
+
+What: /sys/bus/event_source/devices/nmemX/events
+Date: February 2022
+KernelVersion: 5.18
+Contact: Kajol Jain <kjain@linux.ibm.com>
+Description: (RO) Attribute group to describe performance monitoring events
+ for the nvdimm memory device. Each attribute in this group
+ describes a single performance monitoring event supported by
+ this nvdimm pmu. The name of the file is the name of the event.
+ (See ABI/testing/sysfs-bus-event_source-devices-events). A
+ listing of the events supported by a given nvdimm provider type
+ can be found in Documentation/driver-api/nvdimm/$provider.
+
+What: /sys/bus/event_source/devices/nmemX/cpumask
+Date: February 2022
+KernelVersion: 5.18
+Contact: Kajol Jain <kjain@linux.ibm.com>
+Description: (RO) This sysfs file exposes the cpumask which is designated to
+ to retrieve nvdimm pmu event counter data.