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SubjectRe: [PATCH 2/3] watchdog: Document watchdog_thresh sysctl
On Fri, May 17, 2013 at 10:31:20AM +0800, Li Zefan wrote:
>
> Signed-off-by: Li Zefan <lizefan@huawei.com>

Acked-by: Don Zickus <dzickus@redhat.com>

> ---
> Documentation/sysctl/kernel.txt | 14 ++++++++++++++
> 1 file changed, 14 insertions(+)
>
> diff --git a/Documentation/sysctl/kernel.txt b/Documentation/sysctl/kernel.txt
> index ccd4258..e8fabd6 100644
> --- a/Documentation/sysctl/kernel.txt
> +++ b/Documentation/sysctl/kernel.txt
> @@ -76,6 +76,7 @@ show up in /proc/sys/kernel:
> - tainted
> - threads-max
> - unknown_nmi_panic
> +- watchdog_thresh
> - version
>
> ==============================================================
> @@ -648,3 +649,16 @@ that time, kernel debugging information is displayed on console.
>
> NMI switch that most IA32 servers have fires unknown NMI up, for
> example. If a system hangs up, try pressing the NMI switch.
> +
> +==============================================================
> +
> +watchdog_thresh:
> +
> +This value can be used to control the frequency of hrtimer and NMI
> +events and the soft and hard lockup thresholds. The default threshold
> +is 10 seconds.
> +
> +The softlockup threshold is (2 * watchdog_thresh). Setting this
> +tunable to zero will disable lockup detection altogether.
> +
> +==============================================================
> --
> 1.8.0.2


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