drm/i915/perf: add missing delay for OA muxes configuration
authorLionel Landwerlin <lionel.g.landwerlin@intel.com>
Wed, 10 Jul 2019 10:55:24 +0000 (11:55 +0100)
committerJani Nikula <jani.nikula@intel.com>
Mon, 29 Jul 2019 12:45:49 +0000 (15:45 +0300)
commit8f48de49795ca52f70c96558ccc6a0c174504779
tree3b01a782f9b72860fbe3b0f9462673ad7eb6ee98
parent06c12ae3b401238477e65e8c4e04e065699a6115
drm/i915/perf: add missing delay for OA muxes configuration

This was dropped from the original patch series, we weren't sure
whether it was needed at the time. More recent tests show it's
definitely needed to have acurate performance data.

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Fixes: 19f81df2859eb1 ("drm/i915/perf: Add OA unit support for Gen 8+")
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
[ickle: combine duplicate code and comments]
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190710105524.23017-1-chris@chris-wilson.co.uk
(cherry picked from commit 14bfcd3e0daeb0f757a02aac85fd03e0933ab37e)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
drivers/gpu/drm/i915/i915_perf.c