I've not observed any FPS changes with my limited testing.
Here is the performance data I collected with nexuiz, measuring the
latency of i915_gem_object_pin_to_display_plane. Top is before, bottom
is after.
N Min Max Median Avg Stddev
x 2246 0.352 37.538 2.791 3.3091901 1.8631844
+ 2239 0.281 44.517 2.699 3.088992 1.583838
Difference at 95.0% confidence
-0.220198 +/- 0.101227
-6.65414% +/- 3.05896%
(Student's t, pooled s = 1.72938)
Ben Widawsky (2):
drm/i915: extract ring sync code
drm/i915: use semaphores for the display plane
drivers/gpu/drm/i915/i915_drv.h | 19 +++++++++
drivers/gpu/drm/i915/i915_gem.c | 51 ++++++++++++++++++++---
drivers/gpu/drm/i915/i915_gem_execbuffer.c | 60 +---------------------------
3 files changed, 66 insertions(+), 64 deletions(-)
--
1.7.9.4
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