From: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Date: Fri, 24 May 2013 14:16:07 +0000 (+0300)
Subject: drm/i915: track ring progression using seqnos
X-Git-Tag: v3.11-rc1~65^2~105^2~46
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=92cab7345131db7af18f630a799ce6b2e8e624c5;p=pandora-kernel.git

drm/i915: track ring progression using seqnos

Instead of relying in acthd, track ring seqno progression
to detect if ring has hung.

v2: put hangcheck stuff inside struct (Chris Wilson)

v3: initialize hangcheck.seqno (Ben Widawsky)

Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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