Re: [PATCH v5 4/4] pseries/mobility: set NMI watchdog factor during an LPM

[Randy Dunlap]

Hi Laurent,

On 7/13/22 08:47, Laurent Dufour wrote:
> diff --git a/Documentation/admin-guide/sysctl/kernel.rst b/Documentation/admin-guide/sysctl/kernel.rst
> index ddccd1077462..d73faa619c15 100644
> --- a/Documentation/admin-guide/sysctl/kernel.rst
> +++ b/Documentation/admin-guide/sysctl/kernel.rst
> @@ -592,6 +592,18 @@ to the guest kernel command line (see
>  Documentation/admin-guide/kernel-parameters.rst).
>  
>  
> +nmi_wd_lpm_factor (PPC only)
> +============================
> +
> +Factor apply to the NMI watchdog timeout (only when ``nmi_watchdog`` is

   Factor to apply to

> +set to 1). This factor represents the percentage added to
> +``watchdog_thresh`` when calculating the NMI watchdog timeout during an
> +LPM. The soft lockup timeout is not impacted.
> +
> +A value of 0 means no change. The default value is 200 meaning the NMI
> +watchdog is set to 30s (based on ``watchdog_thresh`` equal to 10).

-- 
~Randy