From: Rob Clark <robdclark@gmail.com>
Date: Fri, 30 May 2014 18:47:38 +0000 (-0400)
Subject: drm/msm: add rd logging debugfs
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~44^2~18^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a7d3c9509b2fecf8e593f3c933ab302cbe987d2e;p=pandora-kernel.git

drm/msm: add rd logging debugfs

To ease debugging, add debugfs file which can be cat/tail'd to log
submits, along with fence #.  If GPU hangs, you can look at 'gpu'
debugfs file to find last completed fence and current register state,
and compare with logged rd file to narrow down the DRAW_INDX which
triggered the GPU hang.

Signed-off-by: Rob Clark <robdclark@gmail.com>
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