From 602ddb410dff397e791b7caafa2b2d40e5e52a29 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Wed, 5 Feb 2020 09:54:40 +0000 Subject: [PATCH] drm/i915: Flush execution tasklets before checking request status Rather than flushing the submission tasklets just before we sleep, flush before we check the request status. Ideally this gives us a moment to process the tasklets after sleeping just before we timeout. v2: Compromise by pushing the flush prior to the timeout, but after the check on completion so that we do not further delay the ready client. Signed-off-by: Chris Wilson Reviewed-by: Mika Kuoppala Link: https://patchwork.freedesktop.org/patch/msgid/20200205095441.1769599-1-chris@chris-wilson.co.uk --- drivers/gpu/drm/i915/i915_request.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/i915_request.c b/drivers/gpu/drm/i915/i915_request.c index f56b046a32de..0ecc2cf64216 100644 --- a/drivers/gpu/drm/i915/i915_request.c +++ b/drivers/gpu/drm/i915/i915_request.c @@ -1571,6 +1571,8 @@ long i915_request_wait(struct i915_request *rq, break; } + intel_engine_flush_submission(rq->engine); + if (signal_pending_state(state, current)) { timeout = -ERESTARTSYS; break; @@ -1581,7 +1583,6 @@ long i915_request_wait(struct i915_request *rq, break; } - intel_engine_flush_submission(rq->engine); timeout = io_schedule_timeout(timeout); } __set_current_state(TASK_RUNNING); -- 2.30.2