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authorZhu Yanjun <yanjun.zhu@oracle.com>2017-11-28 01:42:22 -0500
committerDavid S. Miller <davem@davemloft.net>2017-11-30 09:35:03 -0500
commitb78a6aa3876bdd0aa819eb1738caa6d74867b94e (patch)
tree7adbdbcd90d2eae81111eff4e902c8ff91cd5690 /drivers/net/ethernet/nvidia
parentatm: mpoa: remove 32-bit timekeeping (diff)
downloadlinux-dev-b78a6aa3876bdd0aa819eb1738caa6d74867b94e.tar.xz
linux-dev-b78a6aa3876bdd0aa819eb1738caa6d74867b94e.zip
forcedeth: optimize the xmit with unlikely
In xmit, it is very impossible that TX_ERROR occurs. So using unlikely optimizes the xmit process. CC: Srinivas Eeda <srinivas.eeda@oracle.com> CC: Joe Jin <joe.jin@oracle.com> CC: Junxiao Bi <junxiao.bi@oracle.com> Signed-off-by: Zhu Yanjun <yanjun.zhu@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/nvidia')
-rw-r--r--drivers/net/ethernet/nvidia/forcedeth.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/net/ethernet/nvidia/forcedeth.c b/drivers/net/ethernet/nvidia/forcedeth.c
index 481876b5424c..53614ed694fc 100644
--- a/drivers/net/ethernet/nvidia/forcedeth.c
+++ b/drivers/net/ethernet/nvidia/forcedeth.c
@@ -2563,7 +2563,7 @@ static int nv_tx_done(struct net_device *dev, int limit)
if (np->desc_ver == DESC_VER_1) {
if (flags & NV_TX_LASTPACKET) {
- if (flags & NV_TX_ERROR) {
+ if (unlikely(flags & NV_TX_ERROR)) {
if ((flags & NV_TX_RETRYERROR)
&& !(flags & NV_TX_RETRYCOUNT_MASK))
nv_legacybackoff_reseed(dev);
@@ -2580,7 +2580,7 @@ static int nv_tx_done(struct net_device *dev, int limit)
}
} else {
if (flags & NV_TX2_LASTPACKET) {
- if (flags & NV_TX2_ERROR) {
+ if (unlikely(flags & NV_TX2_ERROR)) {
if ((flags & NV_TX2_RETRYERROR)
&& !(flags & NV_TX2_RETRYCOUNT_MASK))
nv_legacybackoff_reseed(dev);
@@ -2626,7 +2626,7 @@ static int nv_tx_done_optimized(struct net_device *dev, int limit)
nv_unmap_txskb(np, np->get_tx_ctx);
if (flags & NV_TX2_LASTPACKET) {
- if (flags & NV_TX2_ERROR) {
+ if (unlikely(flags & NV_TX2_ERROR)) {
if ((flags & NV_TX2_RETRYERROR)
&& !(flags & NV_TX2_RETRYCOUNT_MASK)) {
if (np->driver_data & DEV_HAS_GEAR_MODE)