Hi
netif_rx is meant to be called from interrupts because it doesn't wake up
ksoftirqd. For calling from outside interrupts, netif_rx_ni exists.
This patch fixes plip to use netif_rx_ni. It fixes the infamous error
"NOHZ: local_softirq_panding 08" that happens on some machines with NOHZ
and plip --- it is caused by the fact that softirq is pending and
ksoftirqd is sleeping.
Mikulas
diff -u -r linux-2.6.24-rc2/drivers/net/plip.c linux-2.6.24-test/drivers/net/plip.c
--- linux-2.6.24-rc2/drivers/net/plip.c 2007-11-06 22:57:46.000000000 +0100
+++ linux-2.6.24-test/drivers/net/plip.c 2007-11-22 21:11:28.000000000 +0100
@@ -663,7 +663,7 @@
case PLIP_PK_DONE:
/* Inform the upper layer for the arrival of a packet. */
rcv->skb->protocol=plip_type_trans(rcv->skb, dev);
- netif_rx(rcv->skb);
+ netif_rx_ni(rcv->skb);
dev->last_rx = jiffies;
dev->stats.rx_bytes += rcv->length.h;
dev->stats.rx_packets++;
-
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