drm/i915: Make execlist port count variable

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As we emulate execlists on top of the GuC workqueue, it is not
restricted to just 2 ports and we can increase that number arbitrarily
to trade-off queue depth (i.e. scheduling latency) against pipeline
bubbles.

v2: rebase. better commit msg (Chris)
v3: rebase

Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20170922124307.10914-5-mika.kuoppala@intel.com

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This commit is contained in:

Mika Kuoppala 2017-09-22 15:43:07 +03:00 • committed by Mika Kuoppala

parent 7a62cc6107

commit 76e70087d3

7 changed files with 50 additions and 19 deletions

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10

drivers/gpu/drm/i915/i915_debugfs.c

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3

drivers/gpu/drm/i915/i915_drv.h

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17

drivers/gpu/drm/i915/i915_gpu_error.c

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8

drivers/gpu/drm/i915/i915_guc_submission.c

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4

drivers/gpu/drm/i915/intel_engine_cs.c

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6

drivers/gpu/drm/i915/intel_lrc.c

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21

drivers/gpu/drm/i915/intel_ringbuffer.h

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