drm/i915: un-inline i915_gem_drain_freed_objects()

I can't idenfity a single hot path that would require
i915_gem_drain_freed_objects() to be inline. Un-inline it.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/6c289c55afee0d9a3067122db63277b8d60cf74f.1662390010.git.jani.nikula@intel.com

drivers/gpu/drm/i915/i915_drv.h

@@ -979,22 +979,7 @@ IS_SUBPLATFORM(const struct drm_i915_private *i915,
 void i915_gem_init_early(struct drm_i915_private *dev_priv);
 void i915_gem_cleanup_early(struct drm_i915_private *dev_priv);
 
-static inline void i915_gem_drain_freed_objects(struct drm_i915_private *i915)
-{
-	/*
-	 * A single pass should suffice to release all the freed objects (along
-	 * most call paths) , but be a little more paranoid in that freeing
-	 * the objects does take a little amount of time, during which the rcu
-	 * callbacks could have added new objects into the freed list, and
-	 * armed the work again.
-	 */
-	while (atomic_read(&i915->mm.free_count)) {
-		flush_work(&i915->mm.free_work);
-		flush_delayed_work(&i915->bdev.wq);
-		rcu_barrier();
-	}
-}
-
+void i915_gem_drain_freed_objects(struct drm_i915_private *i915);
 void i915_gem_drain_workqueue(struct drm_i915_private *i915);
 
 struct i915_vma * __must_check

drivers/gpu/drm/i915/i915_gem.c

@@ -1085,6 +1085,21 @@ i915_gem_madvise_ioctl(struct drm_device *dev, void *data,
 	return err;
 }
 
+/*
+ * A single pass should suffice to release all the freed objects (along most
+ * call paths), but be a little more paranoid in that freeing the objects does
+ * take a little amount of time, during which the rcu callbacks could have added
+ * new objects into the freed list, and armed the work again.
+ */
+void i915_gem_drain_freed_objects(struct drm_i915_private *i915)
+{
+	while (atomic_read(&i915->mm.free_count)) {
+		flush_work(&i915->mm.free_work);
+		flush_delayed_work(&i915->bdev.wq);
+		rcu_barrier();
+	}
+}
+
 /*
  * Similar to objects above (see i915_gem_drain_freed-objects), in general we
  * have workers that are armed by RCU and then rearm themselves in their