diff mbox series

[v10,rebased,on,v6.4,16/25] dept: Apply sdt_might_sleep_{start,end}() to dma fence wait

Message ID 20230703094752.79269-17-byungchul@sk.com (mailing list archive)
State New, archived
Headers show
Series DEPT(Dependency Tracker) | expand

Commit Message

Byungchul Park July 3, 2023, 9:47 a.m. UTC 
Makes Dept able to track dma fence waits.

Signed-off-by: Byungchul Park <byungchul@sk.com>
---
 drivers/dma-buf/dma-fence.c | 5 +++++
 1 file changed, 5 insertions(+)
diff mbox series

Patch

diff --git a/drivers/dma-buf/dma-fence.c b/drivers/dma-buf/dma-fence.c
index f177c56269bb..ad2d7a94c868 100644
--- a/drivers/dma-buf/dma-fence.c
+++ b/drivers/dma-buf/dma-fence.c
@@ -16,6 +16,7 @@ 
 #include <linux/dma-fence.h>
 #include <linux/sched/signal.h>
 #include <linux/seq_file.h>
+#include <linux/dept_sdt.h>
 
 #define CREATE_TRACE_POINTS
 #include <trace/events/dma_fence.h>
@@ -782,6 +783,7 @@  dma_fence_default_wait(struct dma_fence *fence, bool intr, signed long timeout)
 	cb.task = current;
 	list_add(&cb.base.node, &fence->cb_list);
 
+	sdt_might_sleep_start(NULL);
 	while (!test_bit(DMA_FENCE_FLAG_SIGNALED_BIT, &fence->flags) && ret > 0) {
 		if (intr)
 			__set_current_state(TASK_INTERRUPTIBLE);
@@ -795,6 +797,7 @@  dma_fence_default_wait(struct dma_fence *fence, bool intr, signed long timeout)
 		if (ret > 0 && intr && signal_pending(current))
 			ret = -ERESTARTSYS;
 	}
+	sdt_might_sleep_end();
 
 	if (!list_empty(&cb.base.node))
 		list_del(&cb.base.node);
@@ -884,6 +887,7 @@  dma_fence_wait_any_timeout(struct dma_fence **fences, uint32_t count,
 		}
 	}
 
+	sdt_might_sleep_start(NULL);
 	while (ret > 0) {
 		if (intr)
 			set_current_state(TASK_INTERRUPTIBLE);
@@ -898,6 +902,7 @@  dma_fence_wait_any_timeout(struct dma_fence **fences, uint32_t count,
 		if (ret > 0 && intr && signal_pending(current))
 			ret = -ERESTARTSYS;
 	}
+	sdt_might_sleep_end();
 
 	__set_current_state(TASK_RUNNING);