*/
#include "display/intel_frontbuffer.h"
-
+#include "gt/intel_gt.h"
#include "i915_drv.h"
#include "i915_gem_clflush.h"
#include "i915_gem_context.h"
#include "i915_gem_object.h"
#include "i915_globals.h"
+#include "i915_trace.h"
static struct i915_global_object {
struct i915_global base;
return kmem_cache_free(global.slab_objects, obj);
}
-static void
-frontbuffer_retire(struct i915_active_request *active,
- struct i915_request *request)
-{
- struct drm_i915_gem_object *obj =
- container_of(active, typeof(*obj), frontbuffer_write);
-
- intel_fb_obj_flush(obj, ORIGIN_CS);
-}
-
void i915_gem_object_init(struct drm_i915_gem_object *obj,
const struct drm_i915_gem_object_ops *ops)
{
spin_lock_init(&obj->vma.lock);
INIT_LIST_HEAD(&obj->vma.list);
+ INIT_LIST_HEAD(&obj->mm.link);
+
INIT_LIST_HEAD(&obj->lut_list);
- INIT_LIST_HEAD(&obj->batch_pool_link);
init_rcu_head(&obj->rcu);
obj->ops = ops;
- obj->frontbuffer_ggtt_origin = ORIGIN_GTT;
- i915_active_request_init(&obj->frontbuffer_write,
- NULL, frontbuffer_retire);
-
obj->mm.madv = I915_MADV_WILLNEED;
INIT_RADIX_TREE(&obj->mm.get_page.radix, GFP_KERNEL | __GFP_NOWARN);
mutex_init(&obj->mm.get_page.lock);
}
}
+static void __i915_gem_free_object_rcu(struct rcu_head *head)
+{
+ struct drm_i915_gem_object *obj =
+ container_of(head, typeof(*obj), rcu);
+ struct drm_i915_private *i915 = to_i915(obj->base.dev);
+
+ dma_resv_fini(&obj->base._resv);
+ i915_gem_object_free(obj);
+
+ GEM_BUG_ON(!atomic_read(&i915->mm.free_count));
+ atomic_dec(&i915->mm.free_count);
+}
+
static void __i915_gem_free_objects(struct drm_i915_private *i915,
struct llist_node *freed)
{
mutex_lock(&i915->drm.struct_mutex);
- GEM_BUG_ON(i915_gem_object_is_active(obj));
list_for_each_entry_safe(vma, vn, &obj->vma.list, obj_link) {
GEM_BUG_ON(i915_vma_is_active(vma));
vma->flags &= ~I915_VMA_PIN_MASK;
GEM_BUG_ON(!list_empty(&obj->vma.list));
GEM_BUG_ON(!RB_EMPTY_ROOT(&obj->vma.tree));
- /*
- * This serializes freeing with the shrinker. Since the free
- * is delayed, first by RCU then by the workqueue, we want the
- * shrinker to be able to free pages of unreferenced objects,
- * or else we may oom whilst there are plenty of deferred
- * freed objects.
- */
- if (i915_gem_object_has_pages(obj) &&
- i915_gem_object_is_shrinkable(obj)) {
- unsigned long flags;
-
- spin_lock_irqsave(&i915->mm.obj_lock, flags);
- list_del_init(&obj->mm.link);
- spin_unlock_irqrestore(&i915->mm.obj_lock, flags);
- }
-
mutex_unlock(&i915->drm.struct_mutex);
GEM_BUG_ON(atomic_read(&obj->bind_count));
GEM_BUG_ON(obj->userfault_count);
- GEM_BUG_ON(atomic_read(&obj->frontbuffer_bits));
GEM_BUG_ON(!list_empty(&obj->lut_list));
- if (obj->ops->release)
- obj->ops->release(obj);
-
atomic_set(&obj->mm.pages_pin_count, 0);
__i915_gem_object_put_pages(obj, I915_MM_NORMAL);
GEM_BUG_ON(i915_gem_object_has_pages(obj));
+ bitmap_free(obj->bit_17);
if (obj->base.import_attach)
drm_prime_gem_destroy(&obj->base, NULL);
- drm_gem_object_release(&obj->base);
+ drm_gem_free_mmap_offset(&obj->base);
- bitmap_free(obj->bit_17);
- i915_gem_object_free(obj);
-
- GEM_BUG_ON(!atomic_read(&i915->mm.free_count));
- atomic_dec(&i915->mm.free_count);
+ if (obj->ops->release)
+ obj->ops->release(obj);
- cond_resched();
+ /* But keep the pointer alive for RCU-protected lookups */
+ call_rcu(&obj->rcu, __i915_gem_free_object_rcu);
}
intel_runtime_pm_put(&i915->runtime_pm, wakeref);
}
void i915_gem_flush_free_objects(struct drm_i915_private *i915)
{
- struct llist_node *freed;
-
- /* Free the oldest, most stale object to keep the free_list short */
- freed = NULL;
- if (!llist_empty(&i915->mm.free_list)) { /* quick test for hotpath */
- /* Only one consumer of llist_del_first() allowed */
- spin_lock(&i915->mm.free_lock);
- freed = llist_del_first(&i915->mm.free_list);
- spin_unlock(&i915->mm.free_lock);
- }
- if (unlikely(freed)) {
- freed->next = NULL;
+ struct llist_node *freed = llist_del_all(&i915->mm.free_list);
+
+ if (unlikely(freed))
__i915_gem_free_objects(i915, freed);
- }
}
static void __i915_gem_free_work(struct work_struct *work)
{
struct drm_i915_private *i915 =
container_of(work, struct drm_i915_private, mm.free_work);
- struct llist_node *freed;
- /*
- * All file-owned VMA should have been released by this point through
- * i915_gem_close_object(), or earlier by i915_gem_context_close().
- * However, the object may also be bound into the global GTT (e.g.
- * older GPUs without per-process support, or for direct access through
- * the GTT either for the user or for scanout). Those VMA still need to
- * unbound now.
- */
-
- spin_lock(&i915->mm.free_lock);
- while ((freed = llist_del_all(&i915->mm.free_list))) {
- spin_unlock(&i915->mm.free_lock);
-
- __i915_gem_free_objects(i915, freed);
- if (need_resched())
- return;
-
- spin_lock(&i915->mm.free_lock);
- }
- spin_unlock(&i915->mm.free_lock);
+ i915_gem_flush_free_objects(i915);
}
-static void __i915_gem_free_object_rcu(struct rcu_head *head)
+void i915_gem_free_object(struct drm_gem_object *gem_obj)
{
- struct drm_i915_gem_object *obj =
- container_of(head, typeof(*obj), rcu);
+ struct drm_i915_gem_object *obj = to_intel_bo(gem_obj);
struct drm_i915_private *i915 = to_i915(obj->base.dev);
+ GEM_BUG_ON(i915_gem_object_is_framebuffer(obj));
+
+ /*
+ * Before we free the object, make sure any pure RCU-only
+ * read-side critical sections are complete, e.g.
+ * i915_gem_busy_ioctl(). For the corresponding synchronized
+ * lookup see i915_gem_object_lookup_rcu().
+ */
+ atomic_inc(&i915->mm.free_count);
+
/*
- * We reuse obj->rcu for the freed list, so we had better not treat
- * it like a rcu_head from this point forwards. And we expect all
- * objects to be freed via this path.
+ * This serializes freeing with the shrinker. Since the free
+ * is delayed, first by RCU then by the workqueue, we want the
+ * shrinker to be able to free pages of unreferenced objects,
+ * or else we may oom whilst there are plenty of deferred
+ * freed objects.
*/
- destroy_rcu_head(&obj->rcu);
+ i915_gem_object_make_unshrinkable(obj);
/*
* Since we require blocking on struct_mutex to unbind the freed
queue_work(i915->wq, &i915->mm.free_work);
}
-void i915_gem_free_object(struct drm_gem_object *gem_obj)
-{
- struct drm_i915_gem_object *obj = to_intel_bo(gem_obj);
-
- /*
- * Before we free the object, make sure any pure RCU-only
- * read-side critical sections are complete, e.g.
- * i915_gem_busy_ioctl(). For the corresponding synchronized
- * lookup see i915_gem_object_lookup_rcu().
- */
- atomic_inc(&to_i915(obj->base.dev)->mm.free_count);
- call_rcu(&obj->rcu, __i915_gem_free_object_rcu);
-}
-
-static inline enum fb_op_origin
-fb_write_origin(struct drm_i915_gem_object *obj, unsigned int domain)
-{
- return (domain == I915_GEM_DOMAIN_GTT ?
- obj->frontbuffer_ggtt_origin : ORIGIN_CPU);
-}
-
static bool gpu_write_needs_clflush(struct drm_i915_gem_object *obj)
{
return !(obj->cache_level == I915_CACHE_NONE ||
i915_gem_object_flush_write_domain(struct drm_i915_gem_object *obj,
unsigned int flush_domains)
{
- struct drm_i915_private *dev_priv = to_i915(obj->base.dev);
struct i915_vma *vma;
assert_object_held(obj);
switch (obj->write_domain) {
case I915_GEM_DOMAIN_GTT:
- i915_gem_flush_ggtt_writes(dev_priv);
+ for_each_ggtt_vma(vma, obj)
+ intel_gt_flush_ggtt_writes(vma->vm->gt);
- intel_fb_obj_flush(obj,
- fb_write_origin(obj, I915_GEM_DOMAIN_GTT));
+ intel_frontbuffer_flush(obj->frontbuffer, ORIGIN_CPU);
for_each_ggtt_vma(vma, obj) {
if (vma->iomap)
i915_vma_unset_ggtt_write(vma);
}
+
break;
case I915_GEM_DOMAIN_WC:
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