[Bug 111090] 3% perf drop in GfxBench Manhattan 3.0, 3.1 and CarChase test-cases

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=111090

--- Comment #2 from Chris Wilson <chris at chris-wilson.co.uk> ---
Chris Wilson (17):
      drm/i915: Keep user GGTT alive for a minimum of 250ms
      drm/i915: Kill the undead intel_context.c zombie
      drm/i915: Split GEM object type definition to its own header
      drm/i915: Pull GEM ioctls interface to its own file
      drm/i915: Move object->pages API to i915_gem_object.[ch]
      drm/i915: Move shmem object setup to its own file
      drm/i915: Move phys objects to its own file
      drm/i915: Move mmap and friends to its own file
      drm/i915: Move GEM domain management to its own file
      drm/i915: Move more GEM objects under gem/
      drm/i915: Pull scatterlist utils out of i915_gem.h
      drm/i915: Move GEM object domain management from struct_mutex to local
      drm/i915: Move GEM object waiting to its own file
      drm/i915: Move GEM object busy checking to its own file
      drm/i915: Move GEM client throttling to its own file
      drm/i915: Rename intel_context.active to .inflight
      drm/i915: Drop the deferred active reference

Dave Airlie (2):
      Merge tag 'drm-misc-next-2019-05-24' of
git://anongit.freedesktop.org/drm/drm-misc into drm-next
      Merge tag 'drm-intel-next-2019-05-24' of
git://anongit.freedesktop.org/drm/drm-intel into drm-next

Jani Nikula (1):
      Merge drm/drm-next into drm-intel-next-queued

Michal Wajdeczko (14):
      drm/i915/guc: Change platform default GuC mode
      drm/i915/guc: Don't allow GuC submission
      drm/i915/guc: Updates for GuC 32.0.3 firmware
      drm/i915/guc: Reset GuC ADS during sanitize
      drm/i915/guc: Always ask GuC to update power domain states
      drm/i915/guc: Define GuC firmware version for Geminilake
      drm/i915/huc: Define HuC firmware version for Geminilake
      drm/i915/guc: New GuC interrupt register for Gen11
      drm/i915/guc: New GuC scratch registers for Gen11
      drm/i915/huc: New HuC status register for Gen11
      drm/i915/guc: Update GuC CTB response definition
      drm/i915/guc: Enable GuC CTB communication on Gen11
      drm/i915/guc: Define GuC firmware version for Icelake
      drm/i915/huc: Define HuC firmware version for Icelake

Oscar Mateo (2):
      drm/i915/guc: Create vfuncs for the GuC interrupts control functions
      drm/i915/guc: Correctly handle GuC interrupts on Gen11

Sam Ravnborg (1):
      Merge remote-tracking branch 'drm-intel/topic/core-for-CI' into drm-tip

Uma Shankar (5):
      drm/i915: Enabled Modeset when HDR Infoframe changes
      drm/i915: Add DRM Infoframe handling for BYT/CHT
      drm/i915: Write HDR infoframe and send to panel
      drm/i915: Add state readout for DRM infoframe
      drm/i915: Attach HDR metadata property to connector

Ville Syrjälä (3):
      drm/i915: Make sandybridge_pcode_read() deal with the second data
register
      drm/i915: Make sure we have enough memory bandwidth on ICL
      drm/i915: Enable infoframes on GLK+ for HDR


I would say the biggest potential impact there is:
      drm/i915: Move GEM object domain management from struct_mutex to local
      drm/i915: Drop the deferred active reference

Removing struct_mutex should have been an improvement (reducing lock
contention, and at worse not making it any worse), so the extra burden of
active reference tracking?

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