[Intel-gfx] [PATCH] drm/i915: Distinguish last emitted request from last submitted request

[Chris Wilson]

On Thu, Oct 06, 2016 at 09:57:29AM +0300, Joonas Lahtinen wrote:
> On ke, 2016-10-05 at 21:05 +0100, Chris Wilson wrote:
> > In order not to trigger hangcheck on a idle-but-waiting engine, we need
> > to distinguish between the pending request queue and the actual
> > execution queue. This is done later in "drm/i915: Enable multiple
> > timelines" but for now we need a temporary fix to prevent blaming the
> > wrong engine for a GPU hang.
> > 
> > Fixes: 0a046a0e93d2 ("drm/i915: Nonblocking request submission")
> > Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
> > Cc: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
> > Cc: Mika Kuoppala <mika.kuoppala at intel.com>
> 
> Kerneldoc to tell the difference would be useful in the struct.

It purely a temporary hack. (And hack it is.)
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre