Update documentation describing sysfs node that could help to configure isolation strategy for users in the user space. And describing sysfs node that could read the device isolated state. Signed-off-by: Kai Ye <yekai13@xxxxxxxxxx> --- Documentation/ABI/testing/sysfs-driver-uacce | 26 ++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/Documentation/ABI/testing/sysfs-driver-uacce b/Documentation/ABI/testing/sysfs-driver-uacce index 08f2591138af..e09fd160d3fa 100644 --- a/Documentation/ABI/testing/sysfs-driver-uacce +++ b/Documentation/ABI/testing/sysfs-driver-uacce @@ -19,6 +19,32 @@ Contact: linux-accelerators@xxxxxxxxxxxxxxxx Description: Available instances left of the device Return -ENODEV if uacce_ops get_available_instances is not provided +What: /sys/class/uacce/<dev_name>/isolate_strategy +Date: Jul 2022 +KernelVersion: 6.0 +Contact: linux-accelerators@xxxxxxxxxxxxxxxx +Description: (RW) Configure the frequency size for the hardware error + isolation strategy. This size is a configured integer value. + The default is 0. The maximum value is 65535. This value is a + threshold based on your driver strategies. + + For example, in the hisilicon accelerator engine, first we will + time-stamp every slot AER error. Then check the AER error log + when the device AER error occurred. if the device slot AER error + count exceeds the preset the number of times in one hour, the + isolated state will be set to true. So the device will be + isolated. And the AER error log that exceed one hour will be + cleared. Of course, different strategies can be defined in + different drivers. + +What: /sys/class/uacce/<dev_name>/isolate +Date: Jul 2022 +KernelVersion: 6.0 +Contact: linux-accelerators@xxxxxxxxxxxxxxxx +Description: (R) A sysfs node that read the device isolated state. The value 1 + means the device is unavailable. The 0 means the device is + available. + What: /sys/class/uacce/<dev_name>/algorithms Date: Feb 2020 KernelVersion: 5.7 -- 2.33.0