The IPMI watchdog interface rolled its own ioctl, because in the beginning
that's the way it was, and later because it had a lot of capabilities
that were not in the standard interface.
This patch set attempts to add those capabilities into the standard
interface and move the IPMI watchdog over to that interface. The
changes are:
* Add a pretimeout governor that provides read data on the watchdog
device when a pretimeout happens.
* Add the ability to set the action that occurs when a timeout happens.
The IPMI device and power off or power cycle the system. I noticed
that some other devices can sound alarms and such, I think an interface
like this is a good idea.
* Add the ability to get/set the action that occurs when a pretimeout
happens. IPMI can send an NMI, SMI, or normal interrupt. I also
did a patch that fills out the other drivers that had pretimeouts
so the get operation returns the right value.
* Add an ioctl to get/set the current pretimeout governor. It seemed
like something that was missing.
* Add a sample program that can do all the watchdog IOCTLs. Useful
for testing, if nothing else.
The IPMI watchdog driver still keeps it's current module parameter
configuration, it just goes through the standard watchdog interface
now. I'm going to deprecate the module parameters at some point
because it's kind of awkward.
There's also a small bug fix (I think) where the default governor is
not NULL-ed when it is unregistered.
-corey
