[PATCH net-next 2/6] i40e: remove unnecessary cleaned_count updates
From: Tony Nguyen <anthony.l.nguyen@intel.com>
Date: 2021-02-02 02:25:13
Subsystem:
intel ethernet drivers, networking drivers, the rest · Maintainers:
Tony Nguyen, Przemek Kitszel, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Cristian Dumitrescu <redacted> For performance reasons, remove the redundant updates of the cleaned_count variable, as its value can be computed based on the ring next-to-clean variable, which is consistently updated. Signed-off-by: Cristian Dumitrescu <redacted> Tested-by: Kiran Bhandare <redacted> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com> --- drivers/net/ethernet/intel/i40e/i40e_xsk.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/intel/i40e/i40e_xsk.c b/drivers/net/ethernet/intel/i40e/i40e_xsk.c
index 87d43407653c..99082abd3000 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_xsk.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_xsk.c@@ -300,7 +300,6 @@ int i40e_clean_rx_irq_zc(struct i40e_ring *rx_ring, int budget) bi = i40e_rx_bi(rx_ring, next_to_clean); xsk_buff_free(*bi); *bi = NULL; - cleaned_count++; next_to_clean = (next_to_clean + 1) & count_mask; continue; }
@@ -325,7 +324,6 @@ int i40e_clean_rx_irq_zc(struct i40e_ring *rx_ring, int budget) total_rx_bytes += size; total_rx_packets++; - cleaned_count++; next_to_clean = (next_to_clean + 1) & count_mask; continue; }
@@ -344,7 +342,6 @@ int i40e_clean_rx_irq_zc(struct i40e_ring *rx_ring, int budget) } *bi = NULL; - cleaned_count++; next_to_clean = (next_to_clean + 1) & count_mask; if (eth_skb_pad(skb))
@@ -358,6 +355,7 @@ int i40e_clean_rx_irq_zc(struct i40e_ring *rx_ring, int budget) } rx_ring->next_to_clean = next_to_clean; + cleaned_count = (next_to_clean - rx_ring->next_to_use - 1) & count_mask; if (cleaned_count >= I40E_RX_BUFFER_WRITE) failure = !i40e_alloc_rx_buffers_zc(rx_ring, cleaned_count);
--
2.26.2