[PATCH] e100: NAPI performance enhancements

NAPI performance enhancements - Fixed issues with shared interrupts and NAPI resulting in bad performance.

Signed-off-by: Mallikarjuna R Chilakala <mallikarjuna.chilakala@intel.com>
Signed-off-by: Ganesh Venkatesan <ganesh.venkatesan@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/drivers/net/e100.c b/drivers/net/e100.c
index 8c7e2d17e75f..1e56c8eea35f 100644
--- a/drivers/net/e100.c
+++ b/drivers/net/e100.c
@@ -1671,8 +1671,10 @@ static irqreturn_t e100_intr(int irq, void *dev_id, struct pt_regs *regs)
         if(stat_ack & stat_ack_rnr)
                 nic->ru_running = RU_SUSPENDED;
 
-        e100_disable_irq(nic);
-        netif_rx_schedule(netdev);
+        if(likely(netif_rx_schedule_prep(netdev))) {
+                e100_disable_irq(nic);
+                __netif_rx_schedule(netdev);
+        }
 
         return IRQ_HANDLED;
 }