Re: [PATCH v5 4/4] pseries/mobility: set NMI watchdog factor during an LPM
flat view
From: Randy Dunlap <rdunlap@infradead.org>
Date: 2022-07-13 20:18:01
Also in:
linux-watchdog, lkml
Hi Laurent, On 7/13/22 08:47, Laurent Dufour wrote:
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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
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+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