Chris Wilson 197db8607d igt/gem_concurrent_blit: Explicitly check for "missed interrupts"
As the concurrency tests are a good source of stress for
i915_wait_request() (the tests are primarily designed to ensure that GPU
activity of one form or another is completed before access by third
parties), one of the common form of errors we can detect are the
"missing interrupts" (i.e. where the waits do not terminate because of a
race between the interrupt and the seqno write). Add an explicit check
for this error and flag it as a definite fail - which also helps narrow
it down to certain subtests when run as a batch.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2015-12-09 20:57:52 +00:00
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