drm/i915: Add background commentary to "waitboosting"

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Describe the intent of boosting the GPU frequency to maximum before
waiting on the GPU.

RPS waitboosting was introduced with commit b29c19b645 ("drm/i915:
Boost RPS frequency for CPU stalls") but lacked a concise comment in the
code to explain itself.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1467616119-4093-5-git-send-email-chris@chris-wilson.co.uk

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Chris Wilson 2016-07-04 08:08:35 +01:00

parent 0e6883b043

commit df4ba5099f

1 changed files with 15 additions and 0 deletions

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drivers/gpu/drm/i915/i915_gem.c

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