To inform tools about the relationship between the fences.
Signed-off-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@xxxxxxx>
---
drivers/dma-buf/dma-fence-chain.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/dma-buf/dma-fence-chain.c b/drivers/dma-buf/dma-fence-chain.c
index 9663ba1bb6ac..3435078c45b7 100644
--- a/drivers/dma-buf/dma-fence-chain.c
+++ b/drivers/dma-buf/dma-fence-chain.c
@@ -9,6 +9,8 @@
#include <linux/dma-fence-chain.h>
+#include "trace/events/dma_fence.h"
+
static bool dma_fence_chain_enable_signaling(struct dma_fence *fence);
/**
@@ -251,6 +253,8 @@ void dma_fence_chain_init(struct dma_fence_chain *chain,
chain->fence = fence;
chain->prev_seqno = 0;
+ trace_dma_fence_used_as_dependency(fence, __func__);
+
/* Try to reuse the context of the previous chain node. */
if (prev_chain && __dma_fence_is_later(seqno, prev->seqno, prev->ops)) {
context = prev->context;
--
2.40.1
