{
struct dma_fence_array *result;
struct dma_fence *tmp, **array;
+ ktime_t timestamp;
unsigned int i;
size_t count;
count = 0;
+ timestamp = ns_to_ktime(0);
for (i = 0; i < num_fences; ++i) {
- dma_fence_unwrap_for_each(tmp, &iter[i], fences[i])
- if (!dma_fence_is_signaled(tmp))
+ dma_fence_unwrap_for_each(tmp, &iter[i], fences[i]) {
+ if (!dma_fence_is_signaled(tmp)) {
++count;
+ } else if (test_bit(DMA_FENCE_FLAG_TIMESTAMP_BIT,
+ &tmp->flags)) {
+ if (ktime_after(tmp->timestamp, timestamp))
+ timestamp = tmp->timestamp;
+ } else {
+ /*
+ * Use the current time if the fence is
+ * currently signaling.
+ */
+ timestamp = ktime_get();
+ }
+ }
}
+ /*
+ * If we couldn't find a pending fence just return a private signaled
+ * fence with the timestamp of the last signaled one.
+ */
if (count == 0)
- return dma_fence_get_stub();
+ return dma_fence_allocate_private_stub(timestamp);
array = kmalloc_array(count, sizeof(*array), GFP_KERNEL);
if (!array)
} while (tmp);
if (count == 0) {
- tmp = dma_fence_get_stub();
+ tmp = dma_fence_allocate_private_stub(ktime_get());
goto return_tmp;
}
/**
* dma_fence_allocate_private_stub - return a private, signaled fence
+ * @timestamp: timestamp when the fence was signaled
*
* Return a newly allocated and signaled stub fence.
*/
-struct dma_fence *dma_fence_allocate_private_stub(void)
+struct dma_fence *dma_fence_allocate_private_stub(ktime_t timestamp)
{
struct dma_fence *fence;
set_bit(DMA_FENCE_FLAG_ENABLE_SIGNAL_BIT,
&fence->flags);
- dma_fence_signal(fence);
+ dma_fence_signal_timestamp(fence, timestamp);
return fence;
}
void dma_fence_set_deadline(struct dma_fence *fence, ktime_t deadline);
struct dma_fence *dma_fence_get_stub(void);
-struct dma_fence *dma_fence_allocate_private_stub(void);
+struct dma_fence *dma_fence_allocate_private_stub(ktime_t timestamp);
u64 dma_fence_context_alloc(unsigned num);
extern const struct dma_fence_ops dma_fence_array_ops;