[Intel-gfx] [PATCH 2/2] drm/i915: add more debug info for when atomic updates fail

[Jesse Barnes]

On 09/10/2015 09:05 AM, Ville Syrjälä wrote:
> On Thu, Sep 10, 2015 at 08:34:23AM -0700, Jesse Barnes wrote:
>> I used these additional fields to track down the issue I saw on HSW.
> 
> We already have the tracepoints with the scanline information. Not sure
> what extra this would give.

Also when this hits users or test runners, the needed info will be
immediately available, rather than having to enable trace points and
re-run.  I think that's important for error cases like this, as opposed
to runtime debugging where tracepoints are fine.

Jesse