[Intel-gfx] [RFC 7/8] drm/i915: Allow reset without error capture

[Chris Wilson]

Quoting jeff.mcgee at intel.com (2018-03-16 18:31:04)
> From: Jeff McGee <jeff.mcgee at intel.com>
> 
> Pull the reset handling out of i915_handle_error() so that it can be
> called by that function and directly by the upcoming force preemption
> handler. This allows the force preemption handler to bypass the error
> capture that i915_handle_error() does before getting on with the
> reset. We do not want error capture for force preemption because it
> adds significant latency (~10 msecs measured on APL).

And we don't need to capture the error in many other cases; just add a
control flag.
-Chris