linux-kernel - Re: [PATCH v2 2/3] Documentation: add a isolation strategy vfs node for uacce

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Message-ID: <YqiCEHTauCoceNNI@kroah.com>
Date:   Tue, 14 Jun 2022 14:41:52 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Kai Ye <yekai13@...wei.com>
Cc:     herbert@...dor.apana.org.au, linux-crypto@...r.kernel.org,
        linux-accelerators@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        linuxarm@...wei.com, zhangfei.gao@...aro.org,
        wangzhou1@...ilicon.com
Subject: Re: [PATCH v2 2/3] Documentation: add a isolation strategy vfs node
 for uacce

On Tue, Jun 14, 2022 at 08:29:39PM +0800, Kai Ye wrote:
> Update documentation describing DebugFS that could help to
> configure hard error frequency for users in th user space.
> 
> Signed-off-by: Kai Ye <yekai13@...wei.com>
> ---
>  Documentation/ABI/testing/sysfs-driver-uacce | 17 +++++++++++++++++
>  1 file changed, 17 insertions(+)
> 
> diff --git a/Documentation/ABI/testing/sysfs-driver-uacce b/Documentation/ABI/testing/sysfs-driver-uacce
> index 08f2591138af..0c4226364182 100644
> --- a/Documentation/ABI/testing/sysfs-driver-uacce
> +++ b/Documentation/ABI/testing/sysfs-driver-uacce
> @@ -19,6 +19,23 @@ Contact:        linux-accelerators@...ts.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:  5.19
> +Contact:        linux-accelerators@...ts.ozlabs.org
> +Description:    A vfs node that used to configures the hardware

What is a "vfs node"?

> +                error frequency. This frequency is abstract. Like once an hour
> +                or once a day. The specific isolation strategy can be defined in
> +                each driver module.

No, you need to be specific here and describe the units and the format.
Otherwise it is no description at all :(

> +
> +What:           /sys/class/uacce/<dev_name>/isolate
> +Date:           Jun 2022
> +KernelVersion:  5.19

5.19 will not have this change.

> +Contact:        linux-accelerators@...ts.ozlabs.org
> +Description:    A vfs 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.

What does "working" or "isolated" mean?

thanks,

greg k-h