drm/i915/selftests: Verify frequency scaling with RPS

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One of the core tenents of reclocking the GPU is that its throughput
scales with the clock frequency. We can observe this by incrementing a
loop counter on the GPU, and compare the different execution rates at
the notional RPS frequencies.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200420172739.11620-1-chris@chris-wilson.co.uk

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Chris Wilson 2020-04-20 18:27:34 +01:00

parent f0617ff0b8

commit 4ba74e53ad

3 changed files with 240 additions and 13 deletions

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3

drivers/gpu/drm/i915/gt/selftest_gt_pm.c

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249

drivers/gpu/drm/i915/gt/selftest_rps.c

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1

drivers/gpu/drm/i915/gt/selftest_rps.h

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