From: Jesse Brandeburg <jesse.brandeb...@intel.com>
Add a small bit of efficiency to the code by adding a
prefetch of the port_info structure in order to help
avoid a cache miss a little later on in execution.
Also add an unlikely statement to a branch which
generally will never happen in normal operation.
Signed-off-by: Jesse Brandeburg <jesse.brandeb...@intel.com>
Tested-by: Andrew Bowers <andrewx.bow...@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirs...@intel.com>
---
drivers/net/ethernet/intel/ice/ice_txrx.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/intel/ice/ice_txrx.c
b/drivers/net/ethernet/intel/ice/ice_txrx.c
index ec581b1f0fcb..33dd103035dc 100644
--- a/drivers/net/ethernet/intel/ice/ice_txrx.c
+++ b/drivers/net/ethernet/intel/ice/ice_txrx.c
@@ -1226,6 +1226,8 @@ ice_update_itr(struct ice_q_vector *q_vector, struct
ice_ring_container *rc)
if (time_after(next_update, rc->next_update))
goto clear_counts;
+ prefetch(q_vector->vsi->port_info);
+
packets = rc->total_pkts;
bytes = rc->total_bytes;
@@ -1486,7 +1488,7 @@ int ice_napi_poll(struct napi_struct *napi, int budget)
clean_complete = false;
/* Handle case where we are called by netpoll with a budget of 0 */
- if (budget <= 0)
+ if (unlikely(budget <= 0))
return budget;
/* normally we have 1 Rx ring per q_vector */
--
2.21.0
