[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>

diff --git a/drivers/net/e100.c b/drivers/net/e100.c
index 8c7e2d1..1e56c8e 100644 (file)
--- 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;
 }