From: Randy Dunlap <rdunlap@infradead.org>
To: Laurent Dufour <ldufour@linux.ibm.com>,
mpe@ellerman.id.au, npiggin@gmail.com,
christophe.leroy@csgroup.eu, wim@linux-watchdog.org,
linux@roeck-us.net, nathanl@linux.ibm.com
Cc: haren@linux.vnet.ibm.com, hch@infradead.org,
linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
linux-watchdog@vger.kernel.org
Subject: Re: [PATCH v5 4/4] pseries/mobility: set NMI watchdog factor during an LPM
Date: Wed, 13 Jul 2022 13:17:29 -0700 [thread overview]
Message-ID: <e6232bb4-a8e5-8f33-e80e-06b1356565b7@infradead.org> (raw)
In-Reply-To: <20220713154729.80789-5-ldufour@linux.ibm.com>
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
next prev parent reply other threads:[~2022-07-13 20:17 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-13 15:47 [PATCH v5 0/4] Extending NMI watchdog during LPM Laurent Dufour
2022-07-13 15:47 ` [PATCH v5 1/4] powerpc/mobility: wait for memory transfer to complete Laurent Dufour
2022-07-13 15:47 ` [PATCH v5 2/4] watchdog: export lockup_detector_reconfigure Laurent Dufour
2022-07-13 15:47 ` [PATCH v5 3/4] powerpc/watchdog: introduce a NMI watchdog's factor Laurent Dufour
2022-07-13 15:47 ` [PATCH v5 4/4] pseries/mobility: set NMI watchdog factor during an LPM Laurent Dufour
2022-07-13 20:17 ` Randy Dunlap [this message]
2022-07-25 12:25 ` Laurent Dufour
2022-07-26 10:53 ` Michael Ellerman
2022-07-29 13:02 ` [PATCH v5 0/4] Extending NMI watchdog during LPM Michael Ellerman
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