static int i915_gem_shrinker_oom(struct notifier_block *nb,
unsigned long event,
void *ptr);
-static unsigned long i915_gem_purge(struct drm_i915_private *dev_priv, long target);
static unsigned long i915_gem_shrink_all(struct drm_i915_private *dev_priv);
static bool cpu_cache_is_coherent(struct drm_device *dev,
* offsets on purgeable objects by truncating it and marking it purged,
* which prevents userspace from ever using that object again.
*/
- i915_gem_purge(dev_priv, obj->base.size >> PAGE_SHIFT);
+ i915_gem_shrink(dev_priv,
+ obj->base.size >> PAGE_SHIFT,
+ I915_SHRINK_BOUND |
+ I915_SHRINK_UNBOUND |
+ I915_SHRINK_PURGEABLE);
ret = drm_gem_create_mmap_offset(&obj->base);
if (ret != -ENOSPC)
goto out;
return 0;
}
-static unsigned long
-__i915_gem_shrink(struct drm_i915_private *dev_priv, long target,
- bool purgeable_only)
+unsigned long
+i915_gem_shrink(struct drm_i915_private *dev_priv,
+ long target, unsigned flags)
{
- struct list_head still_in_list;
- struct drm_i915_gem_object *obj;
+ const bool purgeable_only = flags & I915_SHRINK_PURGEABLE;
unsigned long count = 0;
/*
* dev->struct_mutex and so we won't ever be able to observe an
* object on the bound_list with a reference count equals 0.
*/
- INIT_LIST_HEAD(&still_in_list);
- while (count < target && !list_empty(&dev_priv->mm.unbound_list)) {
- obj = list_first_entry(&dev_priv->mm.unbound_list,
- typeof(*obj), global_list);
- list_move_tail(&obj->global_list, &still_in_list);
+ if (flags & I915_SHRINK_UNBOUND) {
+ struct list_head still_in_list;
- if (!i915_gem_object_is_purgeable(obj) && purgeable_only)
- continue;
+ INIT_LIST_HEAD(&still_in_list);
+ while (count < target && !list_empty(&dev_priv->mm.unbound_list)) {
+ struct drm_i915_gem_object *obj;
- drm_gem_object_reference(&obj->base);
+ obj = list_first_entry(&dev_priv->mm.unbound_list,
+ typeof(*obj), global_list);
+ list_move_tail(&obj->global_list, &still_in_list);
- if (i915_gem_object_put_pages(obj) == 0)
- count += obj->base.size >> PAGE_SHIFT;
+ if (!i915_gem_object_is_purgeable(obj) && purgeable_only)
+ continue;
+
+ drm_gem_object_reference(&obj->base);
- drm_gem_object_unreference(&obj->base);
+ if (i915_gem_object_put_pages(obj) == 0)
+ count += obj->base.size >> PAGE_SHIFT;
+
+ drm_gem_object_unreference(&obj->base);
+ }
+ list_splice(&still_in_list, &dev_priv->mm.unbound_list);
}
- list_splice(&still_in_list, &dev_priv->mm.unbound_list);
- INIT_LIST_HEAD(&still_in_list);
- while (count < target && !list_empty(&dev_priv->mm.bound_list)) {
- struct i915_vma *vma, *v;
+ if (flags & I915_SHRINK_BOUND) {
+ struct list_head still_in_list;
- obj = list_first_entry(&dev_priv->mm.bound_list,
- typeof(*obj), global_list);
- list_move_tail(&obj->global_list, &still_in_list);
+ INIT_LIST_HEAD(&still_in_list);
+ while (count < target && !list_empty(&dev_priv->mm.bound_list)) {
+ struct drm_i915_gem_object *obj;
+ struct i915_vma *vma, *v;
- if (!i915_gem_object_is_purgeable(obj) && purgeable_only)
- continue;
+ obj = list_first_entry(&dev_priv->mm.bound_list,
+ typeof(*obj), global_list);
+ list_move_tail(&obj->global_list, &still_in_list);
- drm_gem_object_reference(&obj->base);
+ if (!i915_gem_object_is_purgeable(obj) && purgeable_only)
+ continue;
- list_for_each_entry_safe(vma, v, &obj->vma_list, vma_link)
- if (i915_vma_unbind(vma))
- break;
+ drm_gem_object_reference(&obj->base);
- if (i915_gem_object_put_pages(obj) == 0)
- count += obj->base.size >> PAGE_SHIFT;
+ list_for_each_entry_safe(vma, v, &obj->vma_list, vma_link)
+ if (i915_vma_unbind(vma))
+ break;
+
+ if (i915_gem_object_put_pages(obj) == 0)
+ count += obj->base.size >> PAGE_SHIFT;
- drm_gem_object_unreference(&obj->base);
+ drm_gem_object_unreference(&obj->base);
+ }
+ list_splice(&still_in_list, &dev_priv->mm.bound_list);
}
- list_splice(&still_in_list, &dev_priv->mm.bound_list);
return count;
}
-static unsigned long
-i915_gem_purge(struct drm_i915_private *dev_priv, long target)
-{
- return __i915_gem_shrink(dev_priv, target, true);
-}
-
static unsigned long
i915_gem_shrink_all(struct drm_i915_private *dev_priv)
{
i915_gem_evict_everything(dev_priv->dev);
- return __i915_gem_shrink(dev_priv, LONG_MAX, false);
+ return i915_gem_shrink(dev_priv, LONG_MAX,
+ I915_SHRINK_BOUND | I915_SHRINK_UNBOUND);
}
static int
for (i = 0; i < page_count; i++) {
page = shmem_read_mapping_page_gfp(mapping, i, gfp);
if (IS_ERR(page)) {
- i915_gem_purge(dev_priv, page_count);
+ i915_gem_shrink(dev_priv,
+ page_count,
+ I915_SHRINK_BOUND |
+ I915_SHRINK_UNBOUND |
+ I915_SHRINK_PURGEABLE);
page = shmem_read_mapping_page_gfp(mapping, i, gfp);
}
if (IS_ERR(page)) {
* cause memory corruption through use-after-free.
*/
+ /* Throw away the active reference before moving to the unbound list */
+ i915_gem_object_retire(obj);
+
if (i915_is_ggtt(vma->vm)) {
i915_gem_object_finish_gtt(obj);
return 0;
}
-static bool i915_gem_valid_gtt_space(struct drm_device *dev,
- struct drm_mm_node *gtt_space,
+static bool i915_gem_valid_gtt_space(struct i915_vma *vma,
unsigned long cache_level)
{
+ struct drm_mm_node *gtt_space = &vma->node;
struct drm_mm_node *other;
- /* On non-LLC machines we have to be careful when putting differing
- * types of snoopable memory together to avoid the prefetcher
- * crossing memory domains and dying.
+ /*
+ * On some machines we have to be careful when putting differing types
+ * of snoopable memory together to avoid the prefetcher crossing memory
+ * domains and dying. During vm initialisation, we decide whether or not
+ * these constraints apply and set the drm_mm.color_adjust
+ * appropriately.
*/
- if (HAS_LLC(dev))
+ if (vma->vm->mm.color_adjust == NULL)
return true;
if (!drm_mm_node_allocated(gtt_space))
return true;
}
-static void i915_gem_verify_gtt(struct drm_device *dev)
-{
-#if WATCH_GTT
- struct drm_i915_private *dev_priv = dev->dev_private;
- struct drm_i915_gem_object *obj;
- int err = 0;
-
- list_for_each_entry(obj, &dev_priv->mm.gtt_list, global_list) {
- if (obj->gtt_space == NULL) {
- printk(KERN_ERR "object found on GTT list with no space reserved\n");
- err++;
- continue;
- }
-
- if (obj->cache_level != obj->gtt_space->color) {
- printk(KERN_ERR "object reserved space [%08lx, %08lx] with wrong color, cache_level=%x, color=%lx\n",
- i915_gem_obj_ggtt_offset(obj),
- i915_gem_obj_ggtt_offset(obj) + i915_gem_obj_ggtt_size(obj),
- obj->cache_level,
- obj->gtt_space->color);
- err++;
- continue;
- }
-
- if (!i915_gem_valid_gtt_space(dev,
- obj->gtt_space,
- obj->cache_level)) {
- printk(KERN_ERR "invalid GTT space found at [%08lx, %08lx] - color=%x\n",
- i915_gem_obj_ggtt_offset(obj),
- i915_gem_obj_ggtt_offset(obj) + i915_gem_obj_ggtt_size(obj),
- obj->cache_level);
- err++;
- continue;
- }
- }
-
- WARN_ON(err);
-#endif
-}
-
/**
* Finds free space in the GTT aperture and binds the object there.
*/
goto err_free_vma;
}
- if (WARN_ON(!i915_gem_valid_gtt_space(dev, &vma->node,
- obj->cache_level))) {
+ if (WARN_ON(!i915_gem_valid_gtt_space(vma, obj->cache_level))) {
ret = -EINVAL;
goto err_remove_node;
}
vma->bind_vma(vma, obj->cache_level,
flags & (PIN_MAPPABLE | PIN_GLOBAL) ? GLOBAL_BIND : 0);
- i915_gem_verify_gtt(dev);
return vma;
err_remove_node:
}
list_for_each_entry_safe(vma, next, &obj->vma_list, vma_link) {
- if (!i915_gem_valid_gtt_space(dev, &vma->node, cache_level)) {
+ if (!i915_gem_valid_gtt_space(vma, cache_level)) {
ret = i915_vma_unbind(vma);
if (ret)
return ret;
old_write_domain);
}
- i915_gem_verify_gtt(dev);
return 0;
}
return ret;
}
+/**
+ * i915_gem_track_fb - update frontbuffer tracking
+ * old: current GEM buffer for the frontbuffer slots
+ * new: new GEM buffer for the frontbuffer slots
+ * frontbuffer_bits: bitmask of frontbuffer slots
+ *
+ * This updates the frontbuffer tracking bits @frontbuffer_bits by clearing them
+ * from @old and setting them in @new. Both @old and @new can be NULL.
+ */
void i915_gem_track_fb(struct drm_i915_gem_object *old,
struct drm_i915_gem_object *new,
unsigned frontbuffer_bits)
if (!i915_gem_shrinker_lock(dev, &unlock))
return SHRINK_STOP;
- freed = i915_gem_purge(dev_priv, sc->nr_to_scan);
+ freed = i915_gem_shrink(dev_priv,
+ sc->nr_to_scan,
+ I915_SHRINK_BOUND |
+ I915_SHRINK_UNBOUND |
+ I915_SHRINK_PURGEABLE);
if (freed < sc->nr_to_scan)
- freed += __i915_gem_shrink(dev_priv,
- sc->nr_to_scan - freed,
- false);
+ freed += i915_gem_shrink(dev_priv,
+ sc->nr_to_scan - freed,
+ I915_SHRINK_BOUND |
+ I915_SHRINK_UNBOUND);
if (unlock)
mutex_unlock(&dev->struct_mutex);
projects / deliverable / linux.git / blobdiff