When checking the heartbeat pulse, we expect it to have been sent by the time we have slept. We can verify this by checking the engine serial number to see if that matches the predicted pulse serial. It will always be true if, and only if, the pulse was sent by itself (as designed by the test).
Signed-off-by: Chris Wilson <[email protected]> --- drivers/gpu/drm/i915/gt/selftest_engine_heartbeat.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/i915/gt/selftest_engine_heartbeat.c b/drivers/gpu/drm/i915/gt/selftest_engine_heartbeat.c index 9e7376b592e5..c1dbacfcdb90 100644 --- a/drivers/gpu/drm/i915/gt/selftest_engine_heartbeat.c +++ b/drivers/gpu/drm/i915/gt/selftest_engine_heartbeat.c @@ -97,6 +97,8 @@ static int __live_idle_pulse(struct intel_engine_cs *engine, goto out; } + GEM_BUG_ON(engine->wakeref_serial != engine->serial); + pulse_unlock_wait(p); /* synchronize with the retirement callback */ if (!i915_active_is_idle(&p->active)) { -- 2.24.0.rc1 _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
