drm/i915: range-restricted eviction support
Add a mappable parameter to i915_gem_evict_something to distinguish
the two cases (non-restricted vs. mappable gtt allocations). No
functional changes because the mappable limit is set to the end of
the gtt currently.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
diff --git a/drivers/gpu/drm/i915/i915_gem_evict.c b/drivers/gpu/drm/i915/i915_gem_evict.c
index 43a4013..3a4215f 100644
--- a/drivers/gpu/drm/i915/i915_gem_evict.c
+++ b/drivers/gpu/drm/i915/i915_gem_evict.c
@@ -41,7 +41,8 @@
}
int
-i915_gem_evict_something(struct drm_device *dev, int min_size, unsigned alignment)
+i915_gem_evict_something(struct drm_device *dev, int min_size,
+ unsigned alignment, bool mappable)
{
drm_i915_private_t *dev_priv = dev->dev_private;
struct list_head eviction_list, unwind_list;
@@ -51,9 +52,17 @@
i915_gem_retire_requests(dev);
/* Re-check for free space after retiring requests */
- if (drm_mm_search_free(&dev_priv->mm.gtt_space,
- min_size, alignment, 0))
- return 0;
+ if (mappable) {
+ if (drm_mm_search_free_in_range(&dev_priv->mm.gtt_space,
+ min_size, alignment, 0,
+ dev_priv->mm.gtt_mappable_end,
+ 0))
+ return 0;
+ } else {
+ if (drm_mm_search_free(&dev_priv->mm.gtt_space,
+ min_size, alignment, 0))
+ return 0;
+ }
/*
* The goal is to evict objects and amalgamate space in LRU order.
@@ -79,7 +88,12 @@
*/
INIT_LIST_HEAD(&unwind_list);
- drm_mm_init_scan(&dev_priv->mm.gtt_space, min_size, alignment);
+ if (mappable)
+ drm_mm_init_scan_with_range(&dev_priv->mm.gtt_space, min_size,
+ alignment, 0,
+ dev_priv->mm.gtt_mappable_end);
+ else
+ drm_mm_init_scan(&dev_priv->mm.gtt_space, min_size, alignment);
/* First see if there is a large enough contiguous idle region... */
list_for_each_entry(obj_priv, &dev_priv->mm.inactive_list, mm_list) {