[Intel-gfx] [PATCH 176/190] drm/i915: Use the MRU stack search after evicting

[Chris Wilson]

When we evict from the GTT to make room for an object, the hole we
create is put onto the MRU stack inside the drm_mm range manager. On the
next search pass, we can speed up a PIN_HIGH allocation by referencing
that stack for the new hole.

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/i915_gem.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 0bd6db4e83d9..a7cad2c7c034 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -2873,8 +2873,10 @@ search_free:
 						       obj->cache_level,
 						       start, end,
 						       flags);
-			if (ret == 0)
+			if (ret == 0) {
+				search_flag = DRM_MM_SEARCH_DEFAULT;
 				goto search_free;
+			}
 
 			goto err_unpin;
 		}
-- 
2.7.0.rc3