On Tue, 2011-03-29 at 21:40 -0700, Jeff Ohlstein wrote:

Daniel Walker wrote:

quoted

Are you saying this is mostly a debugging facility ? The interrupts off
thing I can see as just debugging, but I don't understand the bus
lockups part.
  

It isn't just a debugging facility. It is still beneficial to the end user
in that it restarts the system if there is a bus lockup or a faulty 
interrupt
handler in a rarely used codepath. This is better than the alternative 
of draining
the battery and turning off. We want this to be turned on independent of 
what userspace
one is using, unless they explicitly turn it off themselves.

It doesn't sound too different that all the other watchdogs in
drivers/watchdog/ .. Your just detecting lockups right?

Daniel