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-rw-r--r--Documentation/ABI/testing/sysfs-bus-nvdimm18
1 files changed, 17 insertions, 1 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-nvdimm b/Documentation/ABI/testing/sysfs-bus-nvdimm
index 1c1f5acbf53d..64eb8f4c6a41 100644
--- a/Documentation/ABI/testing/sysfs-bus-nvdimm
+++ b/Documentation/ABI/testing/sysfs-bus-nvdimm
@@ -18,10 +18,12 @@ Description: (RO) Attribute group to describe the magic bits
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"
+
+ ctl_res_cnt = "event=0x1"
What: /sys/bus/event_source/devices/nmemX/events
Date: February 2022
@@ -41,3 +43,17 @@ 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.
+
+What: /sys/bus/nd/devices/nmemX/cxl/id
+Date: November 2022
+KernelVersion: 6.2
+Contact: Dave Jiang <dave.jiang@intel.com>
+Description: (RO) Show the id (serial) of the device. This is CXL specific.
+
+What: /sys/bus/nd/devices/nmemX/cxl/provider
+Date: November 2022
+KernelVersion: 6.2
+Contact: Dave Jiang <dave.jiang@intel.com>
+Description: (RO) Shows the CXL bridge device that ties to a CXL memory device
+ to this NVDIMM device. I.e. the parent of the device returned is
+ a /sys/bus/cxl/devices/memX instance.