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Diffstat (limited to '')
| -rw-r--r-- | Documentation/watchdog/hpwdt.rst (renamed from Documentation/watchdog/hpwdt.txt) | 25 |
1 files changed, 16 insertions, 9 deletions
diff --git a/Documentation/watchdog/hpwdt.txt b/Documentation/watchdog/hpwdt.rst index aaa9e4b4bdcd..94a96371113e 100644 --- a/Documentation/watchdog/hpwdt.txt +++ b/Documentation/watchdog/hpwdt.rst @@ -1,7 +1,12 @@ +=========================== +HPE iLO NMI Watchdog Driver +=========================== + +for iLO based ProLiant Servers +============================== + Last reviewed: 08/20/2018 - HPE iLO NMI Watchdog Driver - for iLO based ProLiant Servers The HPE iLO NMI Watchdog driver is a kernel module that provides basic watchdog functionality and handler for the iLO "Generate NMI to System" @@ -20,23 +25,26 @@ Last reviewed: 08/20/2018 The hpwdt driver also has the following module parameters: - soft_margin - allows the user to set the watchdog timer value. + ============ ================================================================ + soft_margin allows the user to set the watchdog timer value. Default value is 30 seconds. - timeout - an alias of soft_margin. - pretimeout - allows the user to set the watchdog pretimeout value. + timeout an alias of soft_margin. + pretimeout allows the user to set the watchdog pretimeout value. This is the number of seconds before timeout when an NMI is delivered to the system. Setting the value to zero disables the pretimeout NMI. Default value is 9 seconds. - nowayout - basic watchdog parameter that does not allow the timer to + nowayout basic watchdog parameter that does not allow the timer to be restarted or an impending ASR to be escaped. Default value is set when compiling the kernel. If it is set to "Y", then there is no way of disabling the watchdog once it has been started. + ============ ================================================================ - NOTE: More information about watchdog drivers in general, including the ioctl + NOTE: + More information about watchdog drivers in general, including the ioctl interface to /dev/watchdog can be found in - Documentation/watchdog/watchdog-api.txt and Documentation/IPMI.txt. + Documentation/watchdog/watchdog-api.rst and Documentation/IPMI.txt. Due to limitations in the iLO hardware, the NMI pretimeout if enabled, can only be set to 9 seconds. Attempts to set pretimeout to other @@ -63,4 +71,3 @@ Last reviewed: 08/20/2018 The HPE iLO NMI Watchdog Driver and documentation were originally developed by Tom Mingarelli. - |