Quoting Tvrtko Ursulin (2017-12-19 15:45:42)
> From: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
>
> Rather than calibrate and emit nop batches, use a manually signalled chain
> of spinners to generate the desired interrupts.
>
> Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
> ---
> } while (idle != busy);
>
> - /* Install the fences and enable signaling */
> - igt_assert_eq(poll(&pfd, 1, 10), 0);
> + /* Process the batch queue. */
> + pfd.events = POLLIN;
> + for (int i = 0; i < target; i++) {
> + const unsigned int timeout_ms = test_duration_ms / target;
I think you want
timeout_ms = (i + 1) * test_duration_ms / target;
? Otherwise all the batches have the same relative-to-now timeout (not
relative to the start of the batch).
-Chris
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