diff options
| author |   Jesse Brandeburg <jesse.brandeburg@intel.com> | 2019-08-08 07:39:37 -0700 |
|---|---|---|
| committer |   Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2019-09-05 08:13:40 -0700 |
| commit | d27525ec1fdd01740edb7d4f3dc801256d543393 (patch) | |
| tree | 1f8b617df7d9f6c32a1fd3a3de3c1bf8269b373e /drivers/net/ethernet/intel/ice/ice_txrx.c | |
| parent | ice: move code closer together (diff) | |
| download | linux-dev-d27525ec1fdd01740edb7d4f3dc801256d543393.tar.xz linux-dev-d27525ec1fdd01740edb7d4f3dc801256d543393.zip | |
ice: small efficiency fixes
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.brandeburg@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/ice/ice_txrx.c')
| -rw-r--r-- | drivers/net/ethernet/intel/ice/ice_txrx.c | 4 |
1 files changed, 3 insertions, 1 deletions
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 */ |