Make dept able to track dependencies by dma fence waits and signals.
Signed-off-by: Byungchul Park byungchul@sk.com --- drivers/dma-buf/dma-fence.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/drivers/dma-buf/dma-fence.c b/drivers/dma-buf/dma-fence.c index b4f5c8635276..b313bb59dc9c 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> @@ -798,6 +799,7 @@ 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); @@ -811,6 +813,7 @@ 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); @@ -900,6 +903,7 @@ 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); @@ -914,6 +918,7 @@ 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);