drm/i915/selftests: Delay spinner before waiting for an interrupt

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It seems that although (perhaps because of the memory stall?) the
spinner has signaled that it has started, it still takes some time to
spin up to 100% utilisation of the HW. Since the test depends on the
full utilisation of the HW to trigger the RPS interrupt, wait a little
bit and flush the interrupt status to be sure that the event we see if
from the spinner.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Andi Shyti <andi.shyti@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200417093928.17822-1-chris@chris-wilson.co.uk

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Chris Wilson 2020-04-17 10:39:27 +01:00

parent 23122a4d99

commit 9d7e560f43

1 changed files with 16 additions and 12 deletions

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

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