From d30d3d5f58c4b328513204dfb7dd7ed1a125195f Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Tue, 18 Feb 2020 21:12:15 +0000 Subject: [PATCH] drm/i915/selftests: Flush tasklet on wait_for_submit() Always flush the tasklet if we have pending submissions in wait_for_submit(), so that even if we see the HW has started before we process its ack, when we return the execlists state is well defined. Fixes: 06289949b8dd ("drm/i915/selftests: Check for any sign of request starting in wait_for_submit()") Signed-off-by: Chris Wilson Acked-by: Matthew Auld Link: https://patchwork.freedesktop.org/patch/msgid/20200218211215.1336341-1-chris@chris-wilson.co.uk --- drivers/gpu/drm/i915/gt/selftest_lrc.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/i915/gt/selftest_lrc.c b/drivers/gpu/drm/i915/gt/selftest_lrc.c index 7b303d5fd5b8..a9c9cfb2def8 100644 --- a/drivers/gpu/drm/i915/gt/selftest_lrc.c +++ b/drivers/gpu/drm/i915/gt/selftest_lrc.c @@ -77,11 +77,11 @@ static int wait_for_submit(struct intel_engine_cs *engine, cond_resched(); intel_engine_flush_submission(engine); - if (i915_request_is_active(rq) && - !READ_ONCE(engine->execlists.pending[0])) { - tasklet_unlock_wait(&engine->execlists.tasklet); + if (READ_ONCE(engine->execlists.pending[0])) + continue; + + if (i915_request_is_active(rq)) return 0; - } if (i915_request_started(rq)) /* that was quick! */ return 0; -- 2.11.0