Make sure that the request has been submitted to HW before we begin our wait. This reduces our reliance on the semaphore yield interrupt driving the preemption request.
Signed-off-by: Chris Wilson <[email protected]> --- drivers/gpu/drm/i915/gt/selftest_lrc.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/i915/gt/selftest_lrc.c b/drivers/gpu/drm/i915/gt/selftest_lrc.c index 6f21cdfd0903..6b069bb1ddcc 100644 --- a/drivers/gpu/drm/i915/gt/selftest_lrc.c +++ b/drivers/gpu/drm/i915/gt/selftest_lrc.c @@ -607,6 +607,10 @@ static int __live_lrc_gpr(struct intel_engine_cs *engine, err = emit_semaphore_signal(engine->kernel_context, slot); if (err) goto err_rq; + + err = wait_for_submit(engine, rq, HZ / 2); + if (err) + goto err_rq; } else { slot[0] = 1; wmb(); -- 2.20.1 _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
