On Mon, 25 Jun 2012 23:48:01 +0200, Daniel Vetter <daniel at ffwll.ch> wrote: > So essentially I still fail to see the upside of your proposed ductape > ... In either case I guess a walk to the reset button is inevitable > every once in a while ;-) A false positive for declaring a GPU wedged in a situation that should have never occurred in the first place is a recoverable and minor inconvenience compared to locking the display and possibly the system up. An alternative is to incorporate the deadlock detection into i915_mutex_lock_interruptible() and make it report -EIO if it waits longer than 10s, f.e., for the reset to complete. Then the only danger are the few paths that do not perform the error checking lock. -Chris -- Chris Wilson, Intel Open Source Technology Centre
