diff options
Diffstat (limited to 'Documentation/ABI/testing')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-bus-pci | 13 | ||||
| -rw-r--r-- | Documentation/ABI/testing/sysfs-bus-usb | 19 |
2 files changed, 22 insertions, 10 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-pci b/Documentation/ABI/testing/sysfs-bus-pci index ee6c04036492..b3bc50f650ee 100644 --- a/Documentation/ABI/testing/sysfs-bus-pci +++ b/Documentation/ABI/testing/sysfs-bus-pci @@ -281,3 +281,16 @@ Description: opt-out of driver binding using a driver_override name such as "none". Only a single driver may be specified in the override, there is no support for parsing delimiters. + +What: /sys/bus/pci/devices/.../numa_node +Date: Oct 2014 +Contact: Prarit Bhargava <prarit@redhat.com> +Description: + This file contains the NUMA node to which the PCI device is + attached, or -1 if the node is unknown. The initial value + comes from an ACPI _PXM method or a similar firmware + source. If that is missing or incorrect, this file can be + written to override the node. In that case, please report + a firmware bug to the system vendor. Writing to this file + taints the kernel with TAINT_FIRMWARE_WORKAROUND, which + reduces the supportability of your system. diff --git a/Documentation/ABI/testing/sysfs-bus-usb b/Documentation/ABI/testing/sysfs-bus-usb index 614d451cee41..e5cc7633d013 100644 --- a/Documentation/ABI/testing/sysfs-bus-usb +++ b/Documentation/ABI/testing/sysfs-bus-usb @@ -104,16 +104,15 @@ What: /sys/bus/usb/devices/.../power/usb2_hardware_lpm Date: September 2011 Contact: Andiry Xu <andiry.xu@amd.com> Description: - If CONFIG_PM_RUNTIME is set and a USB 2.0 lpm-capable device - is plugged in to a xHCI host which support link PM, it will - perform a LPM test; if the test is passed and host supports - USB2 hardware LPM (xHCI 1.0 feature), USB2 hardware LPM will - be enabled for the device and the USB device directory will - contain a file named power/usb2_hardware_lpm. The file holds - a string value (enable or disable) indicating whether or not - USB2 hardware LPM is enabled for the device. Developer can - write y/Y/1 or n/N/0 to the file to enable/disable the - feature. + If CONFIG_PM is set and a USB 2.0 lpm-capable device is plugged + in to a xHCI host which support link PM, it will perform a LPM + test; if the test is passed and host supports USB2 hardware LPM + (xHCI 1.0 feature), USB2 hardware LPM will be enabled for the + device and the USB device directory will contain a file named + power/usb2_hardware_lpm. The file holds a string value (enable + or disable) indicating whether or not USB2 hardware LPM is + enabled for the device. Developer can write y/Y/1 or n/N/0 to + the file to enable/disable the feature. What: /sys/bus/usb/devices/.../removable Date: February 2012 |