OSDN Git Service

drm/i915: Make pin count per VMA
authorBen Widawsky <benjamin.widawsky@intel.com>
Fri, 6 Dec 2013 22:10:55 +0000 (14:10 -0800)
committerDaniel Vetter <daniel.vetter@ffwll.ch>
Wed, 18 Dec 2013 14:27:49 +0000 (15:27 +0100)
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 files changed:
drivers/gpu/drm/i915/i915_debugfs.c
drivers/gpu/drm/i915/i915_drv.h
drivers/gpu/drm/i915/i915_gem.c
drivers/gpu/drm/i915/i915_gem_context.c
drivers/gpu/drm/i915/i915_gem_evict.c
drivers/gpu/drm/i915/i915_gem_execbuffer.c
drivers/gpu/drm/i915/i915_gem_tiling.c
drivers/gpu/drm/i915/i915_gpu_error.c
drivers/gpu/drm/i915/intel_fbdev.c
drivers/gpu/drm/i915/intel_overlay.c
drivers/gpu/drm/i915/intel_pm.c
drivers/gpu/drm/i915/intel_ringbuffer.c

index 13accf7..4c610ee 100644 (file)
@@ -100,7 +100,7 @@ static const char *get_pin_flag(struct drm_i915_gem_object *obj)
 {
        if (obj->user_pin_count > 0)
                return "P";
-       else if (obj->pin_count > 0)
+       else if (i915_gem_obj_is_pinned(obj))
                return "p";
        else
                return " ";
@@ -125,6 +125,8 @@ static void
 describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj)
 {
        struct i915_vma *vma;
+       int pin_count = 0;
+
        seq_printf(m, "%pK: %s%s%s %8zdKiB %02x %02x %u %u %u%s%s%s",
                   &obj->base,
                   get_pin_flag(obj),
@@ -141,8 +143,10 @@ describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj)
                   obj->madv == I915_MADV_DONTNEED ? " purgeable" : "");
        if (obj->base.name)
                seq_printf(m, " (name: %d)", obj->base.name);
-       if (obj->pin_count)
-               seq_printf(m, " (pinned x %d)", obj->pin_count);
+       list_for_each_entry(vma, &obj->vma_list, vma_link)
+               if (vma->pin_count > 0)
+                       pin_count++;
+               seq_printf(m, " (pinned x %d)", pin_count);
        if (obj->pin_display)
                seq_printf(m, " (display)");
        if (obj->fence_reg != I915_FENCE_REG_NONE)
@@ -439,7 +443,7 @@ static int i915_gem_gtt_info(struct seq_file *m, void *data)
 
        total_obj_size = total_gtt_size = count = 0;
        list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list) {
-               if (list == PINNED_LIST && obj->pin_count == 0)
+               if (list == PINNED_LIST && !i915_gem_obj_is_pinned(obj))
                        continue;
 
                seq_puts(m, "   ");
@@ -2843,7 +2847,7 @@ i915_drop_caches_set(void *data, u64 val)
                list_for_each_entry(vm, &dev_priv->vm_list, global_link) {
                        list_for_each_entry_safe(vma, x, &vm->inactive_list,
                                                 mm_list) {
-                               if (vma->obj->pin_count)
+                               if (vma->pin_count)
                                        continue;
 
                                ret = i915_vma_unbind(vma);
index 780f815..bf022c4 100644 (file)
@@ -651,6 +651,19 @@ struct i915_vma {
        unsigned long exec_handle;
        struct drm_i915_gem_exec_object2 *exec_entry;
 
+       /**
+        * How many users have pinned this object in GTT space. The following
+        * users can each hold at most one reference: pwrite/pread, pin_ioctl
+        * (via user_pin_count), execbuffer (objects are not allowed multiple
+        * times for the same batchbuffer), and the framebuffer code. When
+        * switching/pageflipping, the framebuffer code has at most two buffers
+        * pinned per crtc.
+        *
+        * In the worst case this is 1 + 1 + 1 + 2*2 = 7. That would fit into 3
+        * bits with absolutely no headroom. So use 4 bits.
+        */
+       unsigned int pin_count:4;
+#define DRM_I915_GEM_OBJECT_MAX_PIN_COUNT 0xf
 };
 
 struct i915_ctx_hang_stats {
@@ -1617,18 +1630,6 @@ struct drm_i915_gem_object {
         */
        unsigned int fence_dirty:1;
 
-       /** How many users have pinned this object in GTT space. The following
-        * users can each hold at most one reference: pwrite/pread, pin_ioctl
-        * (via user_pin_count), execbuffer (objects are not allowed multiple
-        * times for the same batchbuffer), and the framebuffer code. When
-        * switching/pageflipping, the framebuffer code has at most two buffers
-        * pinned per crtc.
-        *
-        * In the worst case this is 1 + 1 + 1 + 2*2 = 7. That would fit into 3
-        * bits with absolutely no headroom. So use 4 bits. */
-       unsigned int pin_count:4;
-#define DRM_I915_GEM_OBJECT_MAX_PIN_COUNT 0xf
-
        /**
         * Is the object at the current location in the gtt mappable and
         * fenceable? Used to avoid costly recalculations.
@@ -2005,7 +2006,7 @@ int __must_check i915_gem_object_pin(struct drm_i915_gem_object *obj,
                                     uint32_t alignment,
                                     bool map_and_fenceable,
                                     bool nonblocking);
-void i915_gem_object_unpin(struct drm_i915_gem_object *obj);
+void i915_gem_object_ggtt_unpin(struct drm_i915_gem_object *obj);
 int __must_check i915_vma_unbind(struct i915_vma *vma);
 int __must_check i915_gem_object_ggtt_unbind(struct drm_i915_gem_object *obj);
 int i915_gem_object_put_pages(struct drm_i915_gem_object *obj);
@@ -2168,6 +2169,13 @@ i915_gem_obj_lookup_or_create_vma(struct drm_i915_gem_object *obj,
                                  struct i915_address_space *vm);
 
 struct i915_vma *i915_gem_obj_to_ggtt(struct drm_i915_gem_object *obj);
+static inline bool i915_gem_obj_is_pinned(struct drm_i915_gem_object *obj) {
+       struct i915_vma *vma;
+       list_for_each_entry(vma, &obj->vma_list, vma_link)
+               if (vma->pin_count > 0)
+                       return true;
+       return false;
+}
 
 /* Some GGTT VM helpers */
 #define obj_to_ggtt(obj) \
index d8981ec..6dc96bc 100644 (file)
@@ -204,7 +204,7 @@ i915_gem_get_aperture_ioctl(struct drm_device *dev, void *data,
        pinned = 0;
        mutex_lock(&dev->struct_mutex);
        list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list)
-               if (obj->pin_count)
+               if (i915_gem_obj_is_pinned(obj))
                        pinned += i915_gem_obj_ggtt_size(obj);
        mutex_unlock(&dev->struct_mutex);
 
@@ -651,7 +651,7 @@ i915_gem_gtt_pwrite_fast(struct drm_device *dev,
        }
 
 out_unpin:
-       i915_gem_object_unpin(obj);
+       i915_gem_object_ggtt_unpin(obj);
 out:
        return ret;
 }
@@ -1418,7 +1418,7 @@ int i915_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
        /* Finally, remap it using the new GTT offset */
        ret = vm_insert_pfn(vma, (unsigned long)vmf->virtual_address, pfn);
 unpin:
-       i915_gem_object_unpin(obj);
+       i915_gem_object_ggtt_unpin(obj);
 unlock:
        mutex_unlock(&dev->struct_mutex);
 out:
@@ -2721,7 +2721,7 @@ int i915_vma_unbind(struct i915_vma *vma)
                return 0;
        }
 
-       if (obj->pin_count)
+       if (vma->pin_count)
                return -EBUSY;
 
        BUG_ON(obj->pages == NULL);
@@ -2785,7 +2785,7 @@ i915_gem_object_ggtt_unbind(struct drm_i915_gem_object *obj)
        if (!i915_gem_obj_ggtt_bound(obj))
                return 0;
 
-       if (obj->pin_count)
+       if (i915_gem_obj_to_ggtt(obj)->pin_count)
                return -EBUSY;
 
        BUG_ON(obj->pages == NULL);
@@ -3486,7 +3486,7 @@ int i915_gem_object_set_cache_level(struct drm_i915_gem_object *obj,
        if (obj->cache_level == cache_level)
                return 0;
 
-       if (obj->pin_count) {
+       if (i915_gem_obj_is_pinned(obj)) {
                DRM_DEBUG("can not change the cache level of pinned objects\n");
                return -EBUSY;
        }
@@ -3646,7 +3646,7 @@ static bool is_pin_display(struct drm_i915_gem_object *obj)
         * subtracting the potential reference by the user, any pin_count
         * remains, it must be due to another use by the display engine.
         */
-       return obj->pin_count - !!obj->user_pin_count;
+       return i915_gem_obj_to_ggtt(obj)->pin_count - !!obj->user_pin_count;
 }
 
 /*
@@ -3720,7 +3720,7 @@ err_unpin_display:
 void
 i915_gem_object_unpin_from_display_plane(struct drm_i915_gem_object *obj)
 {
-       i915_gem_object_unpin(obj);
+       i915_gem_object_ggtt_unpin(obj);
        obj->pin_display = is_pin_display(obj);
 }
 
@@ -3853,18 +3853,18 @@ i915_gem_object_pin(struct drm_i915_gem_object *obj,
        struct i915_vma *vma;
        int ret;
 
-       if (WARN_ON(obj->pin_count == DRM_I915_GEM_OBJECT_MAX_PIN_COUNT))
-               return -EBUSY;
-
        WARN_ON(map_and_fenceable && !i915_is_ggtt(vm));
 
        vma = i915_gem_obj_to_vma(obj, vm);
 
        if (vma) {
+               if (WARN_ON(vma->pin_count == DRM_I915_GEM_OBJECT_MAX_PIN_COUNT))
+                       return -EBUSY;
+
                if ((alignment &&
                     vma->node.start & (alignment - 1)) ||
                    (map_and_fenceable && !obj->map_and_fenceable)) {
-                       WARN(obj->pin_count,
+                       WARN(vma->pin_count,
                             "bo is already pinned with incorrect alignment:"
                             " offset=%lx, req.alignment=%x, req.map_and_fenceable=%d,"
                             " obj->map_and_fenceable=%d\n",
@@ -3893,19 +3893,22 @@ i915_gem_object_pin(struct drm_i915_gem_object *obj,
        if (!obj->has_global_gtt_mapping && map_and_fenceable)
                i915_gem_gtt_bind_object(obj, obj->cache_level);
 
-       obj->pin_count++;
+       i915_gem_obj_to_vma(obj, vm)->pin_count++;
        obj->pin_mappable |= map_and_fenceable;
 
        return 0;
 }
 
 void
-i915_gem_object_unpin(struct drm_i915_gem_object *obj)
+i915_gem_object_ggtt_unpin(struct drm_i915_gem_object *obj)
 {
-       BUG_ON(obj->pin_count == 0);
-       BUG_ON(!i915_gem_obj_bound_any(obj));
+       struct i915_vma *vma = i915_gem_obj_to_ggtt(obj);
 
-       if (--obj->pin_count == 0)
+       BUG_ON(!vma);
+       BUG_ON(vma->pin_count == 0);
+       BUG_ON(!i915_gem_obj_ggtt_bound(obj));
+
+       if (--vma->pin_count == 0)
                obj->pin_mappable = false;
 }
 
@@ -3989,7 +3992,7 @@ i915_gem_unpin_ioctl(struct drm_device *dev, void *data,
        obj->user_pin_count--;
        if (obj->user_pin_count == 0) {
                obj->pin_filp = NULL;
-               i915_gem_object_unpin(obj);
+               i915_gem_object_ggtt_unpin(obj);
        }
 
 out:
@@ -4069,7 +4072,7 @@ i915_gem_madvise_ioctl(struct drm_device *dev, void *data,
                goto unlock;
        }
 
-       if (obj->pin_count) {
+       if (i915_gem_obj_is_pinned(obj)) {
                ret = -EINVAL;
                goto out;
        }
@@ -4178,12 +4181,14 @@ void i915_gem_free_object(struct drm_gem_object *gem_obj)
        if (obj->phys_obj)
                i915_gem_detach_phys_object(dev, obj);
 
-       obj->pin_count = 0;
        /* NB: 0 or 1 elements */
        WARN_ON(!list_empty(&obj->vma_list) &&
                !list_is_singular(&obj->vma_list));
        list_for_each_entry_safe(vma, next, &obj->vma_list, vma_link) {
-               int ret = i915_vma_unbind(vma);
+               int ret;
+
+               vma->pin_count = 0;
+               ret = i915_vma_unbind(vma);
                if (WARN_ON(ret == -ERESTARTSYS)) {
                        bool was_interruptible;
 
@@ -4963,7 +4968,7 @@ i915_gem_inactive_count(struct shrinker *shrinker, struct shrink_control *sc)
                if (obj->active)
                        continue;
 
-               if (obj->pin_count == 0 && obj->pages_pin_count == 0)
+               if (!i915_gem_obj_is_pinned(obj) && obj->pages_pin_count == 0)
                        count += obj->base.size >> PAGE_SHIFT;
        }
 
index 4187704..b061991 100644 (file)
@@ -241,7 +241,7 @@ static int create_default_context(struct drm_i915_private *dev_priv)
        return 0;
 
 err_unpin:
-       i915_gem_object_unpin(ctx->obj);
+       i915_gem_object_ggtt_unpin(ctx->obj);
 err_destroy:
        i915_gem_context_unreference(ctx);
        return ret;
@@ -300,11 +300,11 @@ void i915_gem_context_fini(struct drm_device *dev)
        if (dev_priv->ring[RCS].last_context == dctx) {
                /* Fake switch to NULL context */
                WARN_ON(dctx->obj->active);
-               i915_gem_object_unpin(dctx->obj);
+               i915_gem_object_ggtt_unpin(dctx->obj);
                i915_gem_context_unreference(dctx);
        }
 
-       i915_gem_object_unpin(dctx->obj);
+       i915_gem_object_ggtt_unpin(dctx->obj);
        i915_gem_context_unreference(dctx);
        dev_priv->ring[RCS].default_context = NULL;
        dev_priv->ring[RCS].last_context = NULL;
@@ -412,7 +412,7 @@ static int do_switch(struct i915_hw_context *to)
        u32 hw_flags = 0;
        int ret, i;
 
-       BUG_ON(from != NULL && from->obj != NULL && from->obj->pin_count == 0);
+       BUG_ON(from != NULL && from->obj != NULL && !i915_gem_obj_is_pinned(from->obj));
 
        if (from == to && !to->remap_slice)
                return 0;
@@ -428,7 +428,7 @@ static int do_switch(struct i915_hw_context *to)
         * XXX: We need a real interface to do this instead of trickery. */
        ret = i915_gem_object_set_to_gtt_domain(to->obj, false);
        if (ret) {
-               i915_gem_object_unpin(to->obj);
+               i915_gem_object_ggtt_unpin(to->obj);
                return ret;
        }
 
@@ -440,7 +440,7 @@ static int do_switch(struct i915_hw_context *to)
 
        ret = mi_set_context(ring, to, hw_flags);
        if (ret) {
-               i915_gem_object_unpin(to->obj);
+               i915_gem_object_ggtt_unpin(to->obj);
                return ret;
        }
 
@@ -476,7 +476,7 @@ static int do_switch(struct i915_hw_context *to)
                BUG_ON(from->obj->ring != ring);
 
                /* obj is kept alive until the next request by its active ref */
-               i915_gem_object_unpin(from->obj);
+               i915_gem_object_ggtt_unpin(from->obj);
                i915_gem_context_unreference(from);
        }
 
index b737653..5cb0aa4 100644 (file)
@@ -34,7 +34,8 @@
 static bool
 mark_free(struct i915_vma *vma, struct list_head *unwind)
 {
-       if (vma->obj->pin_count)
+       /* Freeing up memory requires no VMAs are pinned */
+       if (i915_gem_obj_is_pinned(vma->obj))
                return false;
 
        if (WARN_ON(!list_empty(&vma->exec_list)))
@@ -186,7 +187,7 @@ int i915_gem_evict_vm(struct i915_address_space *vm, bool do_idle)
        }
 
        list_for_each_entry_safe(vma, next, &vm->inactive_list, mm_list)
-               if (vma->obj->pin_count == 0)
+               if (vma->pin_count == 0)
                        WARN_ON(i915_vma_unbind(vma));
 
        return 0;
index 9282b4c..a2d6eb5 100644 (file)
@@ -566,7 +566,7 @@ i915_gem_execbuffer_unreserve_vma(struct i915_vma *vma)
                i915_gem_object_unpin_fence(obj);
 
        if (entry->flags & __EXEC_OBJECT_HAS_PIN)
-               i915_gem_object_unpin(obj);
+               vma->pin_count--;
 
        entry->flags &= ~(__EXEC_OBJECT_HAS_FENCE | __EXEC_OBJECT_HAS_PIN);
 }
@@ -923,7 +923,9 @@ i915_gem_execbuffer_move_to_active(struct list_head *vmas,
                if (obj->base.write_domain) {
                        obj->dirty = 1;
                        obj->last_write_seqno = intel_ring_get_seqno(ring);
-                       if (obj->pin_count) /* check for potential scanout */
+                       /* check for potential scanout */
+                       if (i915_gem_obj_ggtt_bound(obj) &&
+                           i915_gem_obj_to_ggtt(obj)->pin_count)
                                intel_mark_fb_busy(obj, ring);
                }
 
index b139053..eb99358 100644 (file)
@@ -308,7 +308,7 @@ i915_gem_set_tiling(struct drm_device *dev, void *data,
                return -EINVAL;
        }
 
-       if (obj->pin_count || obj->framebuffer_references) {
+       if (i915_gem_obj_is_pinned(obj) || obj->framebuffer_references) {
                drm_gem_object_unreference_unlocked(&obj->base);
                return -EBUSY;
        }
index 9932243..5dede92 100644 (file)
@@ -578,7 +578,7 @@ static void capture_bo(struct drm_i915_error_buffer *err,
        err->write_domain = obj->base.write_domain;
        err->fence_reg = obj->fence_reg;
        err->pinned = 0;
-       if (obj->pin_count > 0)
+       if (i915_gem_obj_is_pinned(obj))
                err->pinned = 1;
        if (obj->user_pin_count > 0)
                err->pinned = -1;
@@ -611,7 +611,7 @@ static u32 capture_pinned_bo(struct drm_i915_error_buffer *err,
        int i = 0;
 
        list_for_each_entry(obj, head, global_list) {
-               if (obj->pin_count == 0)
+               if (!i915_gem_obj_is_pinned(obj))
                        continue;
 
                capture_bo(err++, obj);
@@ -875,7 +875,7 @@ static void i915_gem_capture_vm(struct drm_i915_private *dev_priv,
                i++;
        error->active_bo_count[ndx] = i;
        list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list)
-               if (obj->pin_count)
+               if (i915_gem_obj_is_pinned(obj))
                        i++;
        error->pinned_bo_count[ndx] = i - error->active_bo_count[ndx];
 
index 284c3eb..d53c17d 100644 (file)
@@ -104,7 +104,7 @@ static int intelfb_alloc(struct drm_fb_helper *helper,
        return 0;
 
 out_unpin:
-       i915_gem_object_unpin(obj);
+       i915_gem_object_ggtt_unpin(obj);
 out_unref:
        drm_gem_object_unreference(&obj->base);
 out:
@@ -208,7 +208,7 @@ static int intelfb_create(struct drm_fb_helper *helper,
        return 0;
 
 out_unpin:
-       i915_gem_object_unpin(obj);
+       i915_gem_object_ggtt_unpin(obj);
        drm_gem_object_unreference(&obj->base);
 out_unlock:
        mutex_unlock(&dev->struct_mutex);
index a98a990..a1397b1 100644 (file)
@@ -293,7 +293,7 @@ static void intel_overlay_release_old_vid_tail(struct intel_overlay *overlay)
 {
        struct drm_i915_gem_object *obj = overlay->old_vid_bo;
 
-       i915_gem_object_unpin(obj);
+       i915_gem_object_ggtt_unpin(obj);
        drm_gem_object_unreference(&obj->base);
 
        overlay->old_vid_bo = NULL;
@@ -306,7 +306,7 @@ static void intel_overlay_off_tail(struct intel_overlay *overlay)
        /* never have the overlay hw on without showing a frame */
        BUG_ON(!overlay->vid_bo);
 
-       i915_gem_object_unpin(obj);
+       i915_gem_object_ggtt_unpin(obj);
        drm_gem_object_unreference(&obj->base);
        overlay->vid_bo = NULL;
 
@@ -782,7 +782,7 @@ static int intel_overlay_do_put_image(struct intel_overlay *overlay,
        return 0;
 
 out_unpin:
-       i915_gem_object_unpin(new_bo);
+       i915_gem_object_ggtt_unpin(new_bo);
        return ret;
 }
 
@@ -1386,7 +1386,7 @@ void intel_setup_overlay(struct drm_device *dev)
 
 out_unpin_bo:
        if (!OVERLAY_NEEDS_PHYSICAL(dev))
-               i915_gem_object_unpin(reg_bo);
+               i915_gem_object_ggtt_unpin(reg_bo);
 out_free_bo:
        drm_gem_object_unreference(&reg_bo->base);
 out_free:
index 41b6e08..cba4be8 100644 (file)
@@ -3298,7 +3298,7 @@ intel_alloc_context_page(struct drm_device *dev)
        return ctx;
 
 err_unpin:
-       i915_gem_object_unpin(ctx);
+       i915_gem_object_ggtt_unpin(ctx);
 err_unref:
        drm_gem_object_unreference(&ctx->base);
        return NULL;
@@ -4166,13 +4166,13 @@ void ironlake_teardown_rc6(struct drm_device *dev)
        struct drm_i915_private *dev_priv = dev->dev_private;
 
        if (dev_priv->ips.renderctx) {
-               i915_gem_object_unpin(dev_priv->ips.renderctx);
+               i915_gem_object_ggtt_unpin(dev_priv->ips.renderctx);
                drm_gem_object_unreference(&dev_priv->ips.renderctx->base);
                dev_priv->ips.renderctx = NULL;
        }
 
        if (dev_priv->ips.pwrctx) {
-               i915_gem_object_unpin(dev_priv->ips.pwrctx);
+               i915_gem_object_ggtt_unpin(dev_priv->ips.pwrctx);
                drm_gem_object_unreference(&dev_priv->ips.pwrctx->base);
                dev_priv->ips.pwrctx = NULL;
        }
index e05a021..75c8883 100644 (file)
@@ -549,7 +549,7 @@ init_pipe_control(struct intel_ring_buffer *ring)
        return 0;
 
 err_unpin:
-       i915_gem_object_unpin(ring->scratch.obj);
+       i915_gem_object_ggtt_unpin(ring->scratch.obj);
 err_unref:
        drm_gem_object_unreference(&ring->scratch.obj->base);
 err:
@@ -625,7 +625,7 @@ static void render_ring_cleanup(struct intel_ring_buffer *ring)
 
        if (INTEL_INFO(dev)->gen >= 5) {
                kunmap(sg_page(ring->scratch.obj->pages->sgl));
-               i915_gem_object_unpin(ring->scratch.obj);
+               i915_gem_object_ggtt_unpin(ring->scratch.obj);
        }
 
        drm_gem_object_unreference(&ring->scratch.obj->base);
@@ -1250,7 +1250,7 @@ static void cleanup_status_page(struct intel_ring_buffer *ring)
                return;
 
        kunmap(sg_page(obj->pages->sgl));
-       i915_gem_object_unpin(obj);
+       i915_gem_object_ggtt_unpin(obj);
        drm_gem_object_unreference(&obj->base);
        ring->status_page.obj = NULL;
 }
@@ -1290,7 +1290,7 @@ static int init_status_page(struct intel_ring_buffer *ring)
        return 0;
 
 err_unpin:
-       i915_gem_object_unpin(obj);
+       i915_gem_object_ggtt_unpin(obj);
 err_unref:
        drm_gem_object_unreference(&obj->base);
 err:
@@ -1387,7 +1387,7 @@ static int intel_init_ring_buffer(struct drm_device *dev,
 err_unmap:
        iounmap(ring->virtual_start);
 err_unpin:
-       i915_gem_object_unpin(obj);
+       i915_gem_object_ggtt_unpin(obj);
 err_unref:
        drm_gem_object_unreference(&obj->base);
        ring->obj = NULL;
@@ -1415,7 +1415,7 @@ void intel_cleanup_ring_buffer(struct intel_ring_buffer *ring)
 
        iounmap(ring->virtual_start);
 
-       i915_gem_object_unpin(ring->obj);
+       i915_gem_object_ggtt_unpin(ring->obj);
        drm_gem_object_unreference(&ring->obj->base);
        ring->obj = NULL;
        ring->preallocated_lazy_request = NULL;