2  * dma-fence-array: aggregate fences to be waited together
22 #include <linux/dma-fence-array.h>
36 	struct dma_fence_array *array = container_of(wrk, typeof(*array), work);  in irq_dma_fence_array_work()  local
38 	dma_fence_signal(&array->base);  in irq_dma_fence_array_work()
39 	dma_fence_put(&array->base);  in irq_dma_fence_array_work()
47 	struct dma_fence_array *array = array_cb->array;  in dma_fence_array_cb_func()  local
49 	if (atomic_dec_and_test(&array->num_pending))  in dma_fence_array_cb_func()
50 		irq_work_queue(&array->work);  in dma_fence_array_cb_func()
52 		dma_fence_put(&array->base);  in dma_fence_array_cb_func()
57 	struct dma_fence_array *array = to_dma_fence_array(fence);  in dma_fence_array_enable_signaling()  local
58 	struct dma_fence_array_cb *cb = (void *)(&array[1]);  in dma_fence_array_enable_signaling()
61 	for (i = 0; i < array->num_fences; ++i) {  in dma_fence_array_enable_signaling()
62 		cb[i].array = array;  in dma_fence_array_enable_signaling()
66 		 * reference count on the array so that we do not free it too  in dma_fence_array_enable_signaling()
68 		 * until we signal the array as complete (but that is now  in dma_fence_array_enable_signaling()
71 		dma_fence_get(&array->base);  in dma_fence_array_enable_signaling()
72 		if (dma_fence_add_callback(array->fences[i], &cb[i].cb,  in dma_fence_array_enable_signaling()
74 			dma_fence_put(&array->base);  in dma_fence_array_enable_signaling()
75 			if (atomic_dec_and_test(&array->num_pending))  in dma_fence_array_enable_signaling()
85 	struct dma_fence_array *array = to_dma_fence_array(fence);  in dma_fence_array_signaled()  local
87 	return atomic_read(&array->num_pending) <= 0;  in dma_fence_array_signaled()
92 	struct dma_fence_array *array = to_dma_fence_array(fence);  in dma_fence_array_release()  local
95 	for (i = 0; i < array->num_fences; ++i)  in dma_fence_array_release()
96 		dma_fence_put(array->fences[i]);  in dma_fence_array_release()
98 	kfree(array->fences);  in dma_fence_array_release()
112  * dma_fence_array_create - Create a custom fence array
113  * @num_fences:		[in]	number of fences to add in the array
114  * @fences:		[in]	array containing the fences
117  * @signal_on_any:	[in]	signal on any fence in the array
123  * The caller should allocate the fences array with num_fences size
125  * array is taken and dma_fence_put() is used on each fence on release.
127  * If @signal_on_any is true the fence array signals if any fence in the array
128  * signals, otherwise it signals when all fences in the array signal.
135 	struct dma_fence_array *array;  in dma_fence_array_create()  local
136 	size_t size = sizeof(*array);  in dma_fence_array_create()
138 	/* Allocate the callback structures behind the array. */  in dma_fence_array_create()
140 	array = kzalloc(size, GFP_KERNEL);  in dma_fence_array_create()
141 	if (!array)  in dma_fence_array_create()
144 	spin_lock_init(&array->lock);  in dma_fence_array_create()
145 	dma_fence_init(&array->base, &dma_fence_array_ops, &array->lock,  in dma_fence_array_create()
147 	init_irq_work(&array->work, irq_dma_fence_array_work);  in dma_fence_array_create()
149 	array->num_fences = num_fences;  in dma_fence_array_create()
150 	atomic_set(&array->num_pending, signal_on_any ? 1 : num_fences);  in dma_fence_array_create()
151 	array->fences = fences;  in dma_fence_array_create()
153 	return array;  in dma_fence_array_create()
159  * @fence:		[in]	fence or fence array
162  * Checks the provided fence or, for a fence array, all fences in the array
168 	struct dma_fence_array *array = to_dma_fence_array(fence);  in dma_fence_match_context()  local
174 	for (i = 0; i < array->num_fences; i++) {  in dma_fence_match_context()
175 		if (array->fences[i]->context != context)  in dma_fence_match_context()