On 26/05/2020 15:17, Chris Wilson wrote:
The kernel no longer uses semaphores between engines, unless it can do
so by preempting them with timeslices. Update the semaphore-busy to only
run when we expect semaphore usage, i.e. not on bdw/bsw.
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/1939
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
---
tests/perf_pmu.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/tests/perf_pmu.c b/tests/perf_pmu.c
index e54a0d47e..e80f730cf 100644
--- a/tests/perf_pmu.c
+++ b/tests/perf_pmu.c
@@ -822,6 +822,7 @@ sema_busy(int gem_fd,
int fd;
igt_require(gem_scheduler_has_semaphores(gem_fd));
+ igt_require(gem_scheduler_has_preemption(gem_fd));
fd = open_group(gem_fd,
I915_PMU_ENGINE_SEMA(e->class, e->instance), -1);
Test with perhaps too intimate knowledge of i915..
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
Regards,
Tvrtko
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