[PATCH 05/10] drm/i915: Trim NEWCLIENT boosting

[Chris Wilson]

Limit the NEWCLIENT boost to only give its small priority boost to fresh
clients only that have no dependencies. To preserve the subtle tweak for
compositors that start with a copy from a client, give them the small
non-preemptive WAIT boost instead.

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/i915_request.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/i915_request.c b/drivers/gpu/drm/i915/i915_request.c
index 9ed5baf157a3..263b1fc9730c 100644
--- a/drivers/gpu/drm/i915/i915_request.c
+++ b/drivers/gpu/drm/i915/i915_request.c
@@ -968,8 +968,10 @@ void i915_request_add(struct i915_request *request)
 		 * Allow interactive/synchronous clients to jump ahead of
 		 * the bulk clients. (FQ_CODEL)
 		 */
-		if (!prev || i915_request_completed(prev))
+		if (list_empty(&request->sched.signalers_list))
 			attr.priority |= I915_PRIORITY_NEWCLIENT;
+		if (!prev || i915_request_completed(prev))
+			attr.priority |= I915_PRIORITY_WAIT;
 
 		engine->schedule(request, &attr);
 	}
-- 
2.20.1