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| author | Dan Williams | 2024-03-13 00:07:36 -0700 |
|---|---|---|
| committer | Dan Williams | 2024-03-13 00:07:36 -0700 |
| commit | d5c0078033e2adf30e897d985fd29084ecb56b51 (patch) | |
| tree | 4db9109b51457c17972fa262f1ac1bfc80aad9da /Documentation | |
| parent | c6c3187d66bc4e87086036266def4170742d7214 (diff) | |
| parent | debdce20c4f28b7e5aa48512e7abf270a00e9051 (diff) | |
Merge branch 'for-6.9/cxl-qos' into for-6.9/cxl
Pick up support for CXL "HMEM reporting" for v6.9, i.e. build an HMAT
from CXL CDAT and PCIe switch information.
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-bus-cxl | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-cxl b/Documentation/ABI/testing/sysfs-bus-cxl index fff2581b8033..3f5627a1210a 100644 --- a/Documentation/ABI/testing/sysfs-bus-cxl +++ b/Documentation/ABI/testing/sysfs-bus-cxl @@ -552,3 +552,37 @@ Description: attribute is only visible for devices supporting the capability. The retrieved errors are logged as kernel events when cxl_poison event tracing is enabled. + + +What: /sys/bus/cxl/devices/regionZ/accessY/read_bandwidth + /sys/bus/cxl/devices/regionZ/accessY/write_banwidth +Date: Jan, 2024 +KernelVersion: v6.9 +Contact: linux-cxl@vger.kernel.org +Description: + (RO) The aggregated read or write bandwidth of the region. The + number is the accumulated read or write bandwidth of all CXL memory + devices that contributes to the region in MB/s. It is + identical data that should appear in + /sys/devices/system/node/nodeX/accessY/initiators/read_bandwidth or + /sys/devices/system/node/nodeX/accessY/initiators/write_bandwidth. + See Documentation/ABI/stable/sysfs-devices-node. access0 provides + the number to the closest initiator and access1 provides the + number to the closest CPU. + + +What: /sys/bus/cxl/devices/regionZ/accessY/read_latency + /sys/bus/cxl/devices/regionZ/accessY/write_latency +Date: Jan, 2024 +KernelVersion: v6.9 +Contact: linux-cxl@vger.kernel.org +Description: + (RO) The read or write latency of the region. The number is + the worst read or write latency of all CXL memory devices that + contributes to the region in nanoseconds. It is identical data + that should appear in + /sys/devices/system/node/nodeX/accessY/initiators/read_latency or + /sys/devices/system/node/nodeX/accessY/initiators/write_latency. + See Documentation/ABI/stable/sysfs-devices-node. access0 provides + the number to the closest initiator and access1 provides the + number to the closest CPU. |