Re: why are the watchdog drivers blacklisted?
On Tue, Feb 09, 2010 at 12:57:29PM -0200, Henrique de Moraes Holschuh wrote:
> On Tue, 09 Feb 2010, Michael Meskes wrote:
> > This looks like a workaround for some other problem to me. Patting at 0.1Hz
> > should be sufficient if the kernel expects a change at 0.016 Hz. I don't have
> > any report about a spurious reboot, but if you do have some I'd like to learn
> > more about it to see where this problem stems from.
> The kernel drivers don't always expect pats at 0.016Hz by default. Some
> drivers have different defaults, and as far as I recall, some of them
> default to whatever the BIOS or BMC programmed in the watchdog.
This is definitely the case for embedded drivers, they'll generally
inherit the configuration that the hardware has. For many devices a
timeout as long as 10s may not even be possible in the hardware.