dmaengine: xilinx_dma: Use tasklet_hi_schedule for timing critical usecase

Schedule tasklet with high priority to ensure that callback processing
is prioritized. It improves throughput for netdev dma clients.

Signed-off-by: Radhey Shyam Pandey <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>

Author: Radhey Shyam Pandey

drivers/dma/xilinx/xilinx_dma.c

@@ -1850,7 +1850,7 @@ static irqreturn_t xilinx_mcdma_irq_handler(int irq, void *data)
 		spin_unlock(&chan->lock);
 	}
 
-	tasklet_schedule(&chan->tasklet);
+	tasklet_hi_schedule(&chan->tasklet);
 	return IRQ_HANDLED;
 }