From: Sieng Piaw Liew <liew.s.piaw@gmail.com>
To: chris.snook@gmail.com
Cc: davem@davemloft.net, kuba@kernel.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org,
Sieng Piaw Liew <liew.s.piaw@gmail.com>
Subject: [PATCH] atl1c: optimize rx loop
Date: Fri, 19 Mar 2021 12:04:47 +0800 [thread overview]
Message-ID: <20210319040447.527-1-liew.s.piaw@gmail.com> (raw)
Remove this trivial bit of inefficiency from the rx receive loop,
results in increase of a few Mbps in iperf3. Tested on Intel Core2
platform.
Signed-off-by: Sieng Piaw Liew <liew.s.piaw@gmail.com>
---
drivers/net/ethernet/atheros/atl1c/atl1c_main.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/atheros/atl1c/atl1c_main.c b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
index 3f65f2b370c5..b995f9a0479c 100644
--- a/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
+++ b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
@@ -1796,9 +1796,7 @@ static void atl1c_clean_rx_irq(struct atl1c_adapter *adapter,
struct atl1c_recv_ret_status *rrs;
struct atl1c_buffer *buffer_info;
- while (1) {
- if (*work_done >= work_to_do)
- break;
+ while (*work_done < work_to_do) {
rrs = ATL1C_RRD_DESC(rrd_ring, rrd_ring->next_to_clean);
if (likely(RRS_RXD_IS_VALID(rrs->word3))) {
rfd_num = (rrs->word0 >> RRS_RX_RFD_CNT_SHIFT) &
--
2.17.1
next reply other threads:[~2021-03-19 4:06 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-19 4:04 Sieng Piaw Liew [this message]
2021-03-19 4:15 ` [PATCH] atl1c: optimize rx loop Willy Tarreau
2021-03-22 0:54 ` Sieng Piaw Liew
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