[PATCH 17/17] drm/i915: Use the MRU stack search after evicting

Chris Wilson
2016-08-22T08:04:16Z

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@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 fee2011591fb..76701000a538 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -3100,8 +3100,10 @@ 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;
}
--
2.9.3