[PATCH 45/98] drm/i915: Do not keep postponing the idle-work

[Chris Wilson]

Rather than persistently postponing the idle-work everytime somebody
calls i915_gem_retire_requests() (potentially ensuring that we never
reach the idle state), queue the work the first time we detect all
requests are complete. Then if in 100ms, more requests have been queued,
we will abort the idle-worker and wait again until all the new requests
have been completed.

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/i915_gem.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index c1b3059eebcf..2f1eeb9bf7a3 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -2977,9 +2977,9 @@ i915_gem_retire_requests(struct drm_device *dev)
 	}
 
 	if (dev_priv->gt.active_engines == 0)
-		mod_delayed_work(dev_priv->wq,
-				 &dev_priv->gt.idle_work,
-				 msecs_to_jiffies(100));
+		queue_delayed_work(dev_priv->wq,
+				   &dev_priv->gt.idle_work,
+				   msecs_to_jiffies(100));
 }
 
 static void
-- 
2.8.1