+ struct drm_syncobj_timeline *timeline = &syncobj->syncobj_timeline;
+ struct drm_syncobj_signal_pt *signal_pt;
+ int ret;
+
+ if (wait_pt->signal_pt_fence) {
+ return;
+ } else if ((syncobj->type == DRM_SYNCOBJ_TYPE_TIMELINE) &&
+ (wait_pt->value <= timeline->timeline)) {
+ dma_fence_signal(&wait_pt->base.base);
+ rb_erase(&wait_pt->node,
+ &timeline->wait_pt_tree);
+ RB_CLEAR_NODE(&wait_pt->node);
+ dma_fence_put(&wait_pt->base.base);
+ return;
+ }
+
+ list_for_each_entry(signal_pt, &timeline->signal_pt_list, list) {
+ if (wait_pt->value < signal_pt->value)
+ continue;
+ if ((syncobj->type == DRM_SYNCOBJ_TYPE_NORMAL) &&
+ (wait_pt->value != signal_pt->value))
+ continue;
+ wait_pt->signal_pt_fence =
dma_fence_get(&signal_pt->base->base);
+ ret = dma_fence_add_callback(wait_pt->signal_pt_fence,
+ &wait_pt->wait_cb,
+ wait_pt_func);
+ if (ret == -ENOENT) {
+ dma_fence_signal(&wait_pt->base.base);
+ dma_fence_put(wait_pt->signal_pt_fence);
+ wait_pt->signal_pt_fence = NULL;
+ rb_erase(&wait_pt->node,
+ &timeline->wait_pt_tree);
+ RB_CLEAR_NODE(&wait_pt->node);
+ dma_fence_put(&wait_pt->base.base);
+ } else if (ret < 0) {
+ dma_fence_put(wait_pt->signal_pt_fence);
+ DRM_ERROR("add callback error!");
+ } else {
+ /* after adding callback, remove from rb tree */
+ rb_erase(&wait_pt->node,
+ &timeline->wait_pt_tree);
+ RB_CLEAR_NODE(&wait_pt->node);
+ }
+ return;
+ }
+ /* signaled pt was released */
+ if (!wait_pt->signal_pt_fence && (wait_pt->value <=
+ timeline->signal_point)) {
+ dma_fence_signal(&wait_pt->base.base);
+ rb_erase(&wait_pt->node,
+ &timeline->wait_pt_tree);
+ RB_CLEAR_NODE(&wait_pt->node);
+ dma_fence_put(&wait_pt->base.base);
+ }
}
-void drm_syncobj_add_callback(struct drm_syncobj *syncobj,
- struct drm_syncobj_cb *cb,
- drm_syncobj_func_t func)
+static int drm_syncobj_timeline_create_signal_pt(struct drm_syncobj
*syncobj,
+ struct dma_fence *fence,
+ u64 point)
{
+ struct drm_syncobj_signal_pt *signal_pt =
+ kzalloc(sizeof(struct drm_syncobj_signal_pt), GFP_KERNEL);
+ struct drm_syncobj_signal_pt *tail_pt;
+ struct dma_fence **fences;
+ struct rb_node *node;
+ struct drm_syncobj_wait_pt *tail_wait_pt = NULL;
+ int num_fences = 0;
+ int ret = 0, i;
+
+ if (!signal_pt)
+ return -ENOMEM;
+ if (syncobj->syncobj_timeline.signal_point >= point) {
+ DRM_WARN("A later signal is ready!");
+ goto out;
+ }
+ if (!fence)
+ goto out;
+
+ fences = kmalloc_array(sizeof(void *), 2, GFP_KERNEL);
+ if (!fences)
+ goto out;
+ fences[num_fences++] = dma_fence_get(fence);
+ /* timeline syncobj must take this dependency */
+ if (syncobj->type == DRM_SYNCOBJ_TYPE_TIMELINE) {
+ spin_lock(&syncobj->lock);
+ if (!list_empty(&syncobj->syncobj_timeline.signal_pt_list)) {
+ tail_pt =
list_last_entry(&syncobj->syncobj_timeline.signal_pt_list,
+ struct drm_syncobj_signal_pt, list);
+ fences[num_fences++] = dma_fence_get(&tail_pt->base->base);
+ }
+ spin_unlock(&syncobj->lock);
+ }
+ signal_pt->base = dma_fence_array_create(num_fences, fences,
+ syncobj->syncobj_timeline.timeline_context,
+ point, false);
+ if (!signal_pt->base)
+ goto fail;
+
+ signal_pt->value = point;
spin_lock(&syncobj->lock);
- drm_syncobj_add_callback_locked(syncobj, cb, func);
+ syncobj->syncobj_timeline.signal_point = point;
+ INIT_LIST_HEAD(&signal_pt->list);
+ list_add_tail(&signal_pt->list,
&syncobj->syncobj_timeline.signal_pt_list);
+
+ /* check if there is advanced wait */
+ node = rb_last(&syncobj->syncobj_timeline.wait_pt_tree);
+ if (node)
+ tail_wait_pt = rb_entry(node, struct drm_syncobj_wait_pt,
node);
+ if (tail_wait_pt && !tail_wait_pt->signal_pt_fence) {
+ for (node = rb_first(&syncobj->syncobj_timeline.wait_pt_tree);
+ node != NULL; node = rb_next(node)) {
+ struct drm_syncobj_wait_pt *wait_pt =
+ rb_entry(node, struct drm_syncobj_wait_pt,
+ node);
+
+ drm_syncobj_find_signal_pt_for_wait_pt(syncobj,
+ wait_pt);
+ }
+ }
+
spin_unlock(&syncobj->lock);
+ wake_up_all(&syncobj->syncobj_timeline.wq);
+
+ return 0;
+fail:
+ for (i = 0; i < num_fences; i++)
+ dma_fence_put(fences[i]);
+ kfree(fences);
+out:
+ kfree(signal_pt);
+ return ret;
}
-void drm_syncobj_remove_callback(struct drm_syncobj *syncobj,
- struct drm_syncobj_cb *cb)
+static void drm_syncobj_timeline_garbage_collection(struct
drm_syncobj *syncobj)
{
+ struct drm_syncobj_timeline *timeline = &syncobj->syncobj_timeline;
+ struct rb_node *node;
+ struct drm_syncobj_wait_pt *wait_pt;
+ struct drm_syncobj_signal_pt *signal_pt, *tmp;
+
spin_lock(&syncobj->lock);
- list_del_init(&cb->node);
+ node = rb_first(&timeline->wait_pt_tree);
+ while (node) {
+ wait_pt = rb_entry(node, struct drm_syncobj_wait_pt, node);
+ if (!dma_fence_is_signaled(&wait_pt->base.base)) {
+ node = rb_next(node);
+ continue;
+ }
+ rb_erase(&wait_pt->node,
+ &timeline->wait_pt_tree);
+ RB_CLEAR_NODE(&wait_pt->node);
+ /* kfree(wait_pt) is excuted by fence put */
+ dma_fence_put(&wait_pt->base.base);
+ node = rb_first(&timeline->wait_pt_tree);
+ }
+ list_for_each_entry_safe(signal_pt, tmp,
+ &timeline->signal_pt_list, list) {
+ if (dma_fence_is_signaled(&signal_pt->base->base)) {
+ timeline->timeline = signal_pt->value;
+ list_del(&signal_pt->list);
+ dma_fence_put(&signal_pt->base->base);
+ kfree(signal_pt);
+ } else {
+ /*signal_pt is in order in list, from small to big, so
+ * the later must not be signal either */
+ break;
+ }
+ }
+
spin_unlock(&syncobj->lock);
}
-
/**
* drm_syncobj_replace_fence - replace fence in a sync object.
* @syncobj: Sync object to replace fence in
@@ -176,28 +368,29 @@ void drm_syncobj_replace_fence(struct
drm_syncobj *syncobj,
u64 point,
struct dma_fence *fence)
{
- struct dma_fence *old_fence;
- struct drm_syncobj_cb *cur, *tmp;
-
- if (fence)
- dma_fence_get(fence);
-
- spin_lock(&syncobj->lock);
-
- old_fence = rcu_dereference_protected(syncobj->fence,
- lockdep_is_held(&syncobj->lock));
- rcu_assign_pointer(syncobj->fence, fence);
-
- if (fence != old_fence) {
- list_for_each_entry_safe(cur, tmp, &syncobj->cb_list, node) {
- list_del_init(&cur->node);
- cur->func(syncobj, cur);
+ drm_syncobj_timeline_garbage_collection(syncobj);
+ if (syncobj->type == DRM_SYNCOBJ_TYPE_TIMELINE) {
+ if (fence)
+ drm_syncobj_timeline_create_signal_pt(syncobj, fence,
+ point);
+ return;
+ } else if (syncobj->type == DRM_SYNCOBJ_TYPE_NORMAL) {
+ u64 pt_value;
+
+ if (!fence) {
+ drm_syncobj_timeline_fini(syncobj,
+ &syncobj->syncobj_timeline);
+ drm_syncobj_timeline_init(syncobj,
+ &syncobj->syncobj_timeline);
+ return;
}
+ pt_value = syncobj->syncobj_timeline.signal_point +
+ DRM_SYNCOBJ_NORMAL_POINT;
+ drm_syncobj_timeline_create_signal_pt(syncobj, fence,
pt_value);
+ return;
+ } else {
+ DRM_ERROR("the syncobj type isn't support\n");
}
-
- spin_unlock(&syncobj->lock);
-
- dma_fence_put(old_fence);
}
EXPORT_SYMBOL(drm_syncobj_replace_fence);
@@ -220,6 +413,120 @@ static int
drm_syncobj_assign_null_handle(struct drm_syncobj *syncobj)
return 0;
}
+static struct drm_syncobj_wait_pt *
+drm_syncobj_timeline_lookup_wait_pt_fence(struct drm_syncobj *syncobj,
+ u64 point,
+ struct dma_fence **fence)
+{
+ struct rb_node *node =
syncobj->syncobj_timeline.wait_pt_tree.rb_node;
+ struct drm_syncobj_wait_pt *wait_pt = NULL;
+
+ spin_lock(&syncobj->lock);
+ while(node) {
+ int result;
+
+ wait_pt = rb_entry(node, struct drm_syncobj_wait_pt, node);
+ result = point - wait_pt->value;
+ if (result < 0) {
+ node = node->rb_left;
+ } else if (result > 0) {
+ node = node->rb_right;
+ } else {
+ if (fence)
+ *fence = dma_fence_get(&wait_pt->base.base);
+ break;
+ }
+ }
+ spin_unlock(&syncobj->lock);
+
+ return wait_pt;
+}
+
+static struct drm_syncobj_wait_pt *
+drm_syncobj_timeline_create_wait_pt_and_return_fence(struct
drm_syncobj *syncobj,
+ u64 point,
+ struct dma_fence **fence)
+{
+ struct drm_syncobj_wait_pt *wait_pt = kzalloc(sizeof(*wait_pt),
+ GFP_KERNEL);
+ struct drm_syncobj_stub_fence *base;
+ struct rb_node **new =
&(syncobj->syncobj_timeline.wait_pt_tree.rb_node), *parent = NULL;
+
+ if (!wait_pt)
+ return NULL;
+ base = &wait_pt->base;
+ spin_lock_init(&base->lock);
+ dma_fence_init(&base->base,
+ &drm_syncobj_stub_fence_ops,
+ &base->lock,
+ syncobj->syncobj_timeline.timeline_context, point);
+ wait_pt->value = point;
+ wait_pt->signal_pt_fence = NULL;
+
+ /* wait pt must be in an order, so that we can easily lookup and
signal
+ * it */
+ spin_lock(&syncobj->lock);
+ while(*new) {
+ struct drm_syncobj_wait_pt *this =
+ rb_entry(*new, struct drm_syncobj_wait_pt, node);
+ int result = wait_pt->value - this->value;
+
+ parent = *new;
+ if (result < 0)
+ new = &((*new)->rb_left);
+ else if (result > 0)
+ new = &((*new)->rb_right);
+ else
+ goto exist;
+ }
+ if (fence)
+ *fence = dma_fence_get(&wait_pt->base.base);
+ rb_link_node(&wait_pt->node, parent, new);
+ rb_insert_color(&wait_pt->node,
&syncobj->syncobj_timeline.wait_pt_tree);
+ spin_unlock(&syncobj->lock);
+ return wait_pt;
+exist:
+ spin_unlock(&syncobj->lock);
+ dma_fence_put(&wait_pt->base.base);
+ wait_pt = drm_syncobj_timeline_lookup_wait_pt_fence(syncobj, point,
+ fence);
+ return wait_pt;
+}
+
+static struct dma_fence *
+drm_syncobj_timeline_point_get(struct drm_syncobj *syncobj, u64
point, u64 flags)
+{
+ struct drm_syncobj_wait_pt *wait_pt;
+ struct dma_fence *fence = NULL;
+
+ /* check if the wait pt exists */
+ wait_pt = drm_syncobj_timeline_lookup_wait_pt_fence(syncobj, point,
+ &fence);
+ if (!fence) {
+ /* This is a new wait pt, so create it */
+ wait_pt =
drm_syncobj_timeline_create_wait_pt_and_return_fence(syncobj, point,
+ &fence);
+ if (!fence)
+ return NULL;
+ }
+ if (wait_pt) {
+ int ret = 0;
+
+ if (flags & DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT) {
+ ret =
wait_event_interruptible_timeout(syncobj->syncobj_timeline.wq,
+ wait_pt->value <=
syncobj->syncobj_timeline.signal_point,
+ msecs_to_jiffies(10000)); /* wait
10s */
+ if (ret <= 0)
+ return NULL;
+ }
+ spin_lock(&syncobj->lock);
+ drm_syncobj_find_signal_pt_for_wait_pt(syncobj, wait_pt);
+ spin_unlock(&syncobj->lock);
+ return fence;
+ }
+ return NULL;
+}
+
/**
* drm_syncobj_find_fence - lookup and reference the fence in a
sync object
* @file_private: drm file private pointer
@@ -234,20 +541,46 @@ static int
drm_syncobj_assign_null_handle(struct drm_syncobj *syncobj)
* contains a reference to the fence, which must be released by
calling
* dma_fence_put().
*/
-int drm_syncobj_find_fence(struct drm_file *file_private,
- u32 handle, u64 point,
- struct dma_fence **fence)
+int drm_syncobj_search_fence(struct drm_syncobj *syncobj, u64 point,
+ u64 flags, struct dma_fence **fence)
{
- struct drm_syncobj *syncobj = drm_syncobj_find(file_private,
handle);
int ret = 0;
if (!syncobj)
return -ENOENT;
- *fence = drm_syncobj_fence_get(syncobj);
+ drm_syncobj_timeline_garbage_collection(syncobj);
+ if (syncobj->type == DRM_SYNCOBJ_TYPE_NORMAL) {
+ /*NORMAL syncobj always wait on last pt */
+ u64 tail_pt_value = syncobj->syncobj_timeline.signal_point;
+
+ if (tail_pt_value == 0)
+ tail_pt_value += DRM_SYNCOBJ_NORMAL_POINT;
+ /* NORMAL syncobj doesn't care point value */
+ WARN_ON(point != 0);
+ *fence = drm_syncobj_timeline_point_get(syncobj, tail_pt_value,
+ flags);
+ } else if (syncobj->type == DRM_SYNCOBJ_TYPE_TIMELINE) {
+ *fence = drm_syncobj_timeline_point_get(syncobj, point,
+ flags);
+ } else {
+ DRM_ERROR("Don't support this type syncobj\n");
+ *fence = NULL;
+ }
if (!*fence) {
ret = -EINVAL;
}
+ return ret;
+}
+EXPORT_SYMBOL(drm_syncobj_search_fence);
+int drm_syncobj_find_fence(struct drm_file *file_private,
+ u32 handle, u64 point,
+ struct dma_fence **fence) {
+ struct drm_syncobj *syncobj = drm_syncobj_find(file_private,
handle);
+
+ int ret = drm_syncobj_search_fence(syncobj, point,
+ DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT,
+ fence);
drm_syncobj_put(syncobj);
return ret;
}
@@ -264,7 +597,7 @@ void drm_syncobj_free(struct kref *kref)
struct drm_syncobj *syncobj = container_of(kref,
struct drm_syncobj,
refcount);
- drm_syncobj_replace_fence(syncobj, 0, NULL);
+ drm_syncobj_timeline_fini(syncobj, &syncobj->syncobj_timeline);
kfree(syncobj);
}
EXPORT_SYMBOL(drm_syncobj_free);
@@ -292,8 +625,12 @@ int drm_syncobj_create(struct drm_syncobj
**out_syncobj, uint32_t flags,
return -ENOMEM;
kref_init(&syncobj->refcount);
- INIT_LIST_HEAD(&syncobj->cb_list);
spin_lock_init(&syncobj->lock);
+ if (flags & DRM_SYNCOBJ_CREATE_TYPE_TIMELINE)
+ syncobj->type = DRM_SYNCOBJ_TYPE_TIMELINE;
+ else
+ syncobj->type = DRM_SYNCOBJ_TYPE_NORMAL;
+ drm_syncobj_timeline_init(syncobj, &syncobj->syncobj_timeline);
if (flags & DRM_SYNCOBJ_CREATE_SIGNALED) {
ret = drm_syncobj_assign_null_handle(syncobj);
@@ -651,7 +988,6 @@ struct syncobj_wait_entry {
struct task_struct *task;
struct dma_fence *fence;
struct dma_fence_cb fence_cb;
- struct drm_syncobj_cb syncobj_cb;
};
static void syncobj_wait_fence_func(struct dma_fence *fence,
@@ -663,18 +999,6 @@ static void syncobj_wait_fence_func(struct
dma_fence *fence,
wake_up_process(wait->task);
}
-static void syncobj_wait_syncobj_func(struct drm_syncobj *syncobj,
- struct drm_syncobj_cb *cb)
-{
- struct syncobj_wait_entry *wait =
- container_of(cb, struct syncobj_wait_entry, syncobj_cb);
-
- /* This happens inside the syncobj lock */
- wait->fence =
dma_fence_get(rcu_dereference_protected(syncobj->fence,
- lockdep_is_held(&syncobj->lock)));
- wake_up_process(wait->task);
-}
-
static signed long drm_syncobj_array_wait_timeout(struct
drm_syncobj **syncobjs,
uint32_t count,
uint32_t flags,
@@ -698,14 +1022,11 @@ static signed long
drm_syncobj_array_wait_timeout(struct drm_syncobj **syncobjs,
signaled_count = 0;
for (i = 0; i < count; ++i) {
entries[i].task = current;
- entries[i].fence = drm_syncobj_fence_get(syncobjs[i]);
+ ret = drm_syncobj_search_fence(syncobjs[i], 0, 0,
+ &entries[i].fence);
if (!entries[i].fence) {
- if (flags & DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT) {
- continue;
- } else {
- ret = -EINVAL;
- goto cleanup_entries;
- }
+ ret = -EINVAL;
+ goto cleanup_entries;
}
if (dma_fence_is_signaled(entries[i].fence)) {
@@ -733,15 +1054,6 @@ static signed long
drm_syncobj_array_wait_timeout(struct drm_syncobj **syncobjs,
* fallthough and try a 0 timeout wait!
*/
- if (flags & DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT) {
- for (i = 0; i < count; ++i) {
- drm_syncobj_fence_get_or_add_callback(syncobjs[i],
- &entries[i].fence,
- &entries[i].syncobj_cb,
- syncobj_wait_syncobj_func);
- }
- }
-
do {
set_current_state(TASK_INTERRUPTIBLE);
@@ -789,13 +1101,10 @@ static signed long
drm_syncobj_array_wait_timeout(struct drm_syncobj **syncobjs,
cleanup_entries:
for (i = 0; i < count; ++i) {
- if (entries[i].syncobj_cb.func)
- drm_syncobj_remove_callback(syncobjs[i],
- &entries[i].syncobj_cb);
+ dma_fence_put(entries[i].fence);
if (entries[i].fence_cb.func)
dma_fence_remove_callback(entries[i].fence,
&entries[i].fence_cb);
- dma_fence_put(entries[i].fence);
}
kfree(entries);
@@ -970,12 +1279,21 @@ drm_syncobj_reset_ioctl(struct drm_device
*dev, void *data,
if (ret < 0)
return ret;
- for (i = 0; i < args->count_handles; i++)
- drm_syncobj_replace_fence(syncobjs[i], 0, NULL);
-
+ for (i = 0; i < args->count_handles; i++) {
+ if (syncobjs[i]->type == DRM_SYNCOBJ_TYPE_TIMELINE) {
+ DRM_ERROR("timeline syncobj cannot reset!\n");
+ ret = -EINVAL;
+ goto out;
+ }
+ drm_syncobj_timeline_fini(syncobjs[i],
+ &syncobjs[i]->syncobj_timeline);
+ drm_syncobj_timeline_init(syncobjs[i],
+ &syncobjs[i]->syncobj_timeline);
+ }
+out:
drm_syncobj_array_free(syncobjs, args->count_handles);
- return 0;
+ return ret;
}
int
diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c
b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
index 0a8d2d64f380..579e91a5858b 100644
--- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
@@ -2137,7 +2137,9 @@ await_fence_array(struct i915_execbuffer *eb,
if (!(flags & I915_EXEC_FENCE_WAIT))
continue;
- fence = drm_syncobj_fence_get(syncobj);
+ drm_syncobj_search_fence(syncobj, 0,
+ DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT,
+ &fence);
if (!fence)
return -EINVAL;
diff --git a/include/drm/drm_syncobj.h b/include/drm/drm_syncobj.h
index 425432b85a87..657c97dc25ec 100644
--- a/include/drm/drm_syncobj.h
+++ b/include/drm/drm_syncobj.h
@@ -30,6 +30,25 @@
struct drm_syncobj_cb;
+enum drm_syncobj_type {
+ DRM_SYNCOBJ_TYPE_NORMAL,
+ DRM_SYNCOBJ_TYPE_TIMELINE
+};
+
+struct drm_syncobj_timeline {
+ wait_queue_head_t wq;
+ u64 timeline_context;
+ /**
+ * @timeline: syncobj timeline
+ */
+ u64 timeline;
+ u64 signal_point;
+
+
+ struct rb_root wait_pt_tree;
+ struct list_head signal_pt_list;
+};
+
/**
* struct drm_syncobj - sync object.
*
@@ -41,19 +60,16 @@ struct drm_syncobj {
*/
struct kref refcount;
/**
- * @fence:
- * NULL or a pointer to the fence bound to this object.
- *
- * This field should not be used directly. Use
drm_syncobj_fence_get()
- * and drm_syncobj_replace_fence() instead.
+ * @type: indicate syncobj type
*/
- struct dma_fence __rcu *fence;
+ enum drm_syncobj_type type;
/**
- * @cb_list: List of callbacks to call when the &fence gets
replaced.
+ * @syncobj_timeline: timeline
*/
- struct list_head cb_list;
+ struct drm_syncobj_timeline syncobj_timeline;
+
/**
- * @lock: Protects &cb_list and write-locks &fence.
+ * @lock: Protects timeline list and write-locks &fence.
*/
spinlock_t lock;
/**
@@ -62,25 +78,6 @@ struct drm_syncobj {
struct file *file;
};
-typedef void (*drm_syncobj_func_t)(struct drm_syncobj *syncobj,
- struct drm_syncobj_cb *cb);
-
-/**
- * struct drm_syncobj_cb - callback for drm_syncobj_add_callback
- * @node: used by drm_syncob_add_callback to append this struct to
- * &drm_syncobj.cb_list
- * @func: drm_syncobj_func_t to call
- *
- * This struct will be initialized by drm_syncobj_add_callback,
additional
- * data can be passed along by embedding drm_syncobj_cb in another
struct.
- * The callback will get called the next time
drm_syncobj_replace_fence is
- * called.
- */
-struct drm_syncobj_cb {
- struct list_head node;
- drm_syncobj_func_t func;
-};
-
void drm_syncobj_free(struct kref *kref);
/**
@@ -106,29 +103,6 @@ drm_syncobj_put(struct drm_syncobj *obj)
kref_put(&obj->refcount, drm_syncobj_free);
}
-/**
- * drm_syncobj_fence_get - get a reference to a fence in a sync object
- * @syncobj: sync object.
- *
- * This acquires additional reference to &drm_syncobj.fence
contained in @obj,
- * if not NULL. It is illegal to call this without already holding a
reference.
- * No locks required.
- *
- * Returns:
- * Either the fence of @obj or NULL if there's none.
- */
-static inline struct dma_fence *
-drm_syncobj_fence_get(struct drm_syncobj *syncobj)
-{
- struct dma_fence *fence;
-
- rcu_read_lock();
- fence = dma_fence_get_rcu_safe(&syncobj->fence);
- rcu_read_unlock();
-
- return fence;
-}
-
struct drm_syncobj *drm_syncobj_find(struct drm_file *file_private,
u32 handle);
void drm_syncobj_replace_fence(struct drm_syncobj *syncobj, u64 point,
@@ -142,5 +116,7 @@ int drm_syncobj_create(struct drm_syncobj
**out_syncobj, uint32_t flags,
int drm_syncobj_get_handle(struct drm_file *file_private,
struct drm_syncobj *syncobj, u32 *handle);
int drm_syncobj_get_fd(struct drm_syncobj *syncobj, int *p_fd);
+int drm_syncobj_search_fence(struct drm_syncobj *syncobj, u64 point,
+ u64 flags, struct dma_fence **fence);
#endif
diff --git a/include/uapi/drm/drm.h b/include/uapi/drm/drm.h
index 300f336633f2..cebdb2541eb7 100644
--- a/include/uapi/drm/drm.h
+++ b/include/uapi/drm/drm.h
@@ -717,6 +717,7 @@ struct drm_prime_handle {
struct drm_syncobj_create {
__u32 handle;
#define DRM_SYNCOBJ_CREATE_SIGNALED (1 << 0)
+#define DRM_SYNCOBJ_CREATE_TYPE_TIMELINE (1 << 1)
__u32 flags;
};
