Re: [PATCH v4 2/3] Documentation: add a isolation strategy sysfs node for uacce

[Greg KH <gregkh@linuxfoundation.org>]

On Thu, Jun 23, 2022 at 02:14:51PM +0800, Kai Ye wrote:
> Update documentation describing sysfs node that could help to
> configure isolation method command for users in th user space.
> 
> Signed-off-by: Kai Ye <yekai13@huawei.com>
> ---
>  Documentation/ABI/testing/sysfs-driver-uacce | 18 ++++++++++++++++++
>  1 file changed, 18 insertions(+)
> 
> diff --git a/Documentation/ABI/testing/sysfs-driver-uacce b/Documentation/ABI/testing/sysfs-driver-uacce
> index 08f2591138af..8784efa96e01 100644
> --- a/Documentation/ABI/testing/sysfs-driver-uacce
> +++ b/Documentation/ABI/testing/sysfs-driver-uacce
> @@ -19,6 +19,24 @@ Contact:        linux-accelerators@lists.ozlabs.org
>  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:           Jun 2022
> +KernelVersion:  5.20
> +Contact:        linux-accelerators@lists.ozlabs.org
> +Description:    A sysfs node that used to configures the hardware error
> +                isolation method command. The command can be parsed
> +                in correct driver. e.g. If the device slot reset frequency
> +                exceeds the preset value in a time window, the device will be
> +                isolated.

What is the "command"?  What is being parsed?  This needs to be
documented a lot more here, this is very vague and not obvious at all.


> +
> +What:           /sys/class/uacce/<dev_name>/isolate
> +Date:           Jun 2022
> +KernelVersion:  5.20
> +Contact:        linux-accelerators@lists.ozlabs.org
> +Description:    A sysfs node that show the device isolated state. The value 0
> +                means that the device is working. The value 1 means that the
> +                device has been isolated.

Are these read-only?  Write only?  read/write?

thanks,

greg k-h