[CI 11/11] debug

[Tvrtko Ursulin]

From: Tvrtko Ursulin <tvrtko.ursulin at intel.com>

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
---
 drivers/dma-buf/dma-fence-chain.c    | 13 ++++++++++++-
 drivers/dma-buf/st-dma-fence-chain.c | 12 ++++++++++--
 2 files changed, 22 insertions(+), 3 deletions(-)

diff --git a/drivers/dma-buf/dma-fence-chain.c b/drivers/dma-buf/dma-fence-chain.c
index a0d920576ba6..25e12785ac82 100644
--- a/drivers/dma-buf/dma-fence-chain.c
+++ b/drivers/dma-buf/dma-fence-chain.c
@@ -125,10 +125,15 @@ static void dma_fence_chain_irq_work(struct irq_work *work)
 
 	chain = container_of(work, typeof(*chain), work);
 
+	trace_printk("chain %llx:%llu\n",
+		     chain->base.context, chain->base.seqno);
 	/* Try to rearm the callback */
-	if (!dma_fence_chain_enable_signaling(&chain->base))
+	if (!dma_fence_chain_enable_signaling(&chain->base)) {
 		/* Ok, we are done. No more unsignaled fences left */
+		trace_printk("chain %llx:%llu DONE\n",
+			      chain->base.context, chain->base.seqno);
 		dma_fence_signal(&chain->base);
+	}
 	dma_fence_put(&chain->base);
 }
 
@@ -137,6 +142,9 @@ static void dma_fence_chain_cb(struct dma_fence *f, struct dma_fence_cb *cb)
 	struct dma_fence_chain *chain;
 
 	chain = container_of(cb, typeof(*chain), cb);
+	trace_printk("chain %llx:%llu f %llx:%llu\n",
+		     chain->base.context, chain->base.seqno,
+		     f->context, f->seqno);
 	init_irq_work(&chain->work, dma_fence_chain_irq_work);
 	irq_work_queue(&chain->work);
 	dma_fence_put(f);
@@ -152,6 +160,9 @@ static bool dma_fence_chain_enable_signaling(struct dma_fence *fence)
 
 		dma_fence_get(f);
 		if (!dma_fence_add_callback(f, &head->cb, dma_fence_chain_cb)) {
+			trace_printk("chain %llx:%llu f %llx:%llu\n",
+				     head->base.context, head->base.seqno,
+				     f->context, f->seqno);
 			dma_fence_put(fence);
 			return true;
 		}
diff --git a/drivers/dma-buf/st-dma-fence-chain.c b/drivers/dma-buf/st-dma-fence-chain.c
index c0979c8049b5..3bce877ddf0b 100644
--- a/drivers/dma-buf/st-dma-fence-chain.c
+++ b/drivers/dma-buf/st-dma-fence-chain.c
@@ -562,9 +562,14 @@ static int signal_backward(void *arg)
 static int __wait_fence_chains(void *arg)
 {
 	struct fence_chains *fc = arg;
+	long ret;
 
-	if (dma_fence_wait(fc->tail, false))
+	ret = dma_fence_wait_timeout(fc->tail, false, HZ * 5);
+	if (ret <= 0) {
+		trace_printk("**** ret=%ld ****\n", ret);
+		ftrace_dump(DUMP_ALL);
 		return -EIO;
+	}
 
 	return 0;
 }
@@ -618,8 +623,11 @@ static int wait_backward(void *arg)
 	get_task_struct(tsk);
 	yield_to(tsk, true);
 
-	for (i = fc.chain_length; i--; )
+	for (i = fc.chain_length; i--; ) {
+		trace_printk("signal %llx:%llu (%u)\n",
+			     fc.fences[i]->context, fc.fences[i]->seqno, fc.fences[i]->waitcount);
 		dma_fence_signal(fc.fences[i]);
+	}
 
 	err = kthread_stop(tsk);
 	put_task_struct(tsk);
-- 
2.34.1