diff options
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.h | 8 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem.c | 51 |
2 files changed, 49 insertions, 10 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index a27780b..906663b 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -552,6 +552,14 @@ typedef struct drm_i915_private { struct list_head fence_list; /** + * List of objects currently pending being freed. + * + * These objects are no longer in use, but due to a signal + * we were prevented from freeing them at the appointed time. + */ + struct list_head deferred_free_list; + + /** * We leave the user IRQ off as much as possible, * but this means that requests will finish and never * be retired once the system goes idle. Set a timer to diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 138ca6e..f45f385 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -53,6 +53,7 @@ static int i915_gem_evict_from_inactive_list(struct drm_device *dev); static int i915_gem_phys_pwrite(struct drm_device *dev, struct drm_gem_object *obj, struct drm_i915_gem_pwrite *args, struct drm_file *file_priv); +static void i915_gem_free_object_tail(struct drm_gem_object *obj); static LIST_HEAD(shrink_list); static DEFINE_SPINLOCK(shrink_list_lock); @@ -1755,6 +1756,20 @@ i915_gem_retire_requests(struct drm_device *dev) { drm_i915_private_t *dev_priv = dev->dev_private; + if (!list_empty(&dev_priv->mm.deferred_free_list)) { + struct drm_i915_gem_object *obj_priv, *tmp; + + /* We must be careful that during unbind() we do not + * accidentally infinitely recurse into retire requests. + * Currently: + * retire -> free -> unbind -> wait -> retire_ring + */ + list_for_each_entry_safe(obj_priv, tmp, + &dev_priv->mm.deferred_free_list, + list) + i915_gem_free_object_tail(&obj_priv->base); + } + i915_gem_retire_requests_ring(dev, &dev_priv->render_ring); if (HAS_BSD(dev)) i915_gem_retire_requests_ring(dev, &dev_priv->bsd_ring); @@ -4458,20 +4473,19 @@ int i915_gem_init_object(struct drm_gem_object *obj) return 0; } -void i915_gem_free_object(struct drm_gem_object *obj) +static void i915_gem_free_object_tail(struct drm_gem_object *obj) { struct drm_device *dev = obj->dev; + drm_i915_private_t *dev_priv = dev->dev_private; struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); + int ret; - trace_i915_gem_object_destroy(obj); - - while (obj_priv->pin_count > 0) - i915_gem_object_unpin(obj); - - if (obj_priv->phys_obj) - i915_gem_detach_phys_object(dev, obj); - - i915_gem_object_unbind(obj); + ret = i915_gem_object_unbind(obj); + if (ret == -ERESTARTSYS) { + list_move(&obj_priv->list, + &dev_priv->mm.deferred_free_list); + return; + } if (obj_priv->mmap_offset) i915_gem_free_mmap_offset(obj); @@ -4483,6 +4497,22 @@ void i915_gem_free_object(struct drm_gem_object *obj) kfree(obj_priv); } +void i915_gem_free_object(struct drm_gem_object *obj) +{ + struct drm_device *dev = obj->dev; + struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); + + trace_i915_gem_object_destroy(obj); + + while (obj_priv->pin_count > 0) + i915_gem_object_unpin(obj); + + if (obj_priv->phys_obj) + i915_gem_detach_phys_object(dev, obj); + + i915_gem_free_object_tail(obj); +} + /** Unbinds all inactive objects. */ static int i915_gem_evict_from_inactive_list(struct drm_device *dev) @@ -4756,6 +4786,7 @@ i915_gem_load(struct drm_device *dev) INIT_LIST_HEAD(&dev_priv->mm.gpu_write_list); INIT_LIST_HEAD(&dev_priv->mm.inactive_list); INIT_LIST_HEAD(&dev_priv->mm.fence_list); + INIT_LIST_HEAD(&dev_priv->mm.deferred_free_list); INIT_LIST_HEAD(&dev_priv->render_ring.active_list); INIT_LIST_HEAD(&dev_priv->render_ring.request_list); if (HAS_BSD(dev)) { |