From 52a1ae115a68272325a327c229f5af44ba324132 Mon Sep 17 00:00:00 2001 From: Oded Gabbay Date: Thu, 18 Jul 2019 09:03:58 +0300 Subject: 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 Reviewed-by: Omer Shpigelman --- drivers/misc/habanalabs/command_submission.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers') diff --git a/drivers/misc/habanalabs/command_submission.c b/drivers/misc/habanalabs/command_submission.c index f00d1c32f6d6..e4dd3e83df8b 100644 --- a/drivers/misc/habanalabs/command_submission.c +++ b/drivers/misc/habanalabs/command_submission.c @@ -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; } -- cgit v1.2.3