Ensure that, while ecore_chain_get_cons_idx is running, txq->hw_cons_ptr
is prefetched. This shows a slight performance improvement.
Signed-off-by: Balazs Nemeth <bnem...@redhat.com>
Reviewed-by: Igor Russkikh <irussk...@marvell.com>
---
drivers/net/qede/qede_rxtx.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/net/qede/qede_rxtx.c b/drivers/net/qede/qede_rxtx.c
index f439ee056..4f58abfbf 100644
--- a/drivers/net/qede/qede_rxtx.c
+++ b/drivers/net/qede/qede_rxtx.c
@@ -896,6 +896,7 @@ qede_process_tx_compl(__rte_unused struct ecore_dev *edev,
uint16_t first_idx;
rte_compiler_barrier();
+ rte_prefetch0(txq->hw_cons_ptr);
sw_tx_cons = ecore_chain_get_cons_idx(&txq->tx_pbl);
hw_bd_cons = rte_le_to_cpu_16(*txq->hw_cons_ptr);
#ifdef RTE_LIBRTE_QEDE_DEBUG_TX
--
2.30.2
