Commit 52a1ae11 authored Jul 18, 2019 by Oded Gabbay

habanalabs: add debug print when rejecting CS



When rejecting CS because of too many in-flight CS, print a debug message
about it as it useful to know when the user is debugging (it indicates a
back-pressure from the driver as the device is not fast enough to consume
the CS)

Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Reviewed-by: Omer Shpigelman <oshpigelman@habana.ai>

parent f388ec7c

drivers/misc/habanalabs/command_submission.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -305,6 +305,8 @@ static int allocate_cs(struct hl_device hdev, struct hl_ctx ctx,
		other = ctx->cs_pending[fence->cs_seq & (HL_MAX_PENDING_CS - 1)];
		if ((other) && (!dma_fence_is_signaled(other))) {
		spin_unlock(&ctx->cs_lock);
		dev_dbg(hdev->dev,
		"Rejecting CS because of too many in-flights CS\n");
		rc = -EAGAIN;
		goto free_fence;
		}

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