[Intel-gfx] [CI 1/2] drm/i915: Tidy reporting busy status during i915_gem_retire_requests()

[Chris Wilson]

As we know by inspection whether any engine is still busy as we retire
all the requests, we can pass that information back via return value
rather than check again afterwards.

v2: A little more polish missed in patch splitting

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala at intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
---
 drivers/gpu/drm/i915/i915_gem_request.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_gem_request.c b/drivers/gpu/drm/i915/i915_gem_request.c
index 1a215320cefb..5e55270bb2de 100644
--- a/drivers/gpu/drm/i915/i915_gem_request.c
+++ b/drivers/gpu/drm/i915/i915_gem_request.c
@@ -749,16 +749,18 @@ complete:
 	return ret;
 }
 
-static void engine_retire_requests(struct intel_engine_cs *engine)
+static bool engine_retire_requests(struct intel_engine_cs *engine)
 {
 	struct drm_i915_gem_request *request, *next;
 
 	list_for_each_entry_safe(request, next, &engine->request_list, link) {
 		if (!i915_gem_request_completed(request))
-			break;
+			return false;
 
 		i915_gem_request_retire(request);
 	}
+
+	return true;
 }
 
 void i915_gem_retire_requests(struct drm_i915_private *dev_priv)
@@ -772,11 +774,9 @@ void i915_gem_retire_requests(struct drm_i915_private *dev_priv)
 
 	GEM_BUG_ON(!dev_priv->gt.awake);
 
-	for_each_engine(engine, dev_priv) {
-		engine_retire_requests(engine);
-		if (!intel_engine_is_active(engine))
+	for_each_engine_masked(engine, dev_priv, dev_priv->gt.active_engines)
+		if (engine_retire_requests(engine))
 			dev_priv->gt.active_engines &= ~intel_engine_flag(engine);
-	}
 
 	if (dev_priv->gt.active_engines == 0)
 		queue_delayed_work(dev_priv->wq,
-- 
2.9.3