drm/i915: Only apply the jump to the "efficient RPS" frequency on startup

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Currently we apply the jump to rpe if we are below it and the GPU needs
more power. For some GPUs, the rpe is 75% of the maximum range causing
us to dramatically overshoot low power applications *and* unable to
reach the low frequency that can most efficiently deliver their
workload.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/20170210150348.22146-3-chris@chris-wilson.co.uk
Reviewed-by: Radoslaw Szwichtenberg <radoslaw.szwichtenberg@intel.com>

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This commit is contained in:

Chris Wilson 2017-02-10 15:03:48 +00:00

parent 17136d548e

commit bd64818dfe

2 changed files with 9 additions and 10 deletions

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8

drivers/gpu/drm/i915/i915_irq.c

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11

drivers/gpu/drm/i915/intel_pm.c

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