[PATCH v3 23/36] net/intel: mark mid-burst ring cleanup as unlikely

Bruce Richardson
2026-01-30T11:44:50Z

It should rarely be the case that we need to cleanup the descriptor ring
mid-burst, so mark as unlikely to help performance.

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
---
drivers/net/intel/common/tx_scalar_fns.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/intel/common/tx_scalar_fns.h b/drivers/net/intel/common/tx_scalar_fns.h
index 90dc6ae423..488130c813 100644
--- a/drivers/net/intel/common/tx_scalar_fns.h
+++ b/drivers/net/intel/common/tx_scalar_fns.h
@@ -271,7 +271,7 @@ ci_xmit_pkts(struct ci_tx_queue *txq,
if (tx_last >= txq->nb_tx_desc)
tx_last = (uint16_t)(tx_last - txq->nb_tx_desc);

- if (nb_used > txq->nb_tx_free) {
+ if (unlikely(nb_used > txq->nb_tx_free)) {
if (ci_tx_xmit_cleanup(txq) != 0) {
if (nb_tx == 0)
return 0;
--
2.51.0