net: NOHZ: local_softirq_pending with tickless

On one of my machines with tickless kernel and plip I get messages :

NOHZ: local_softirq_pending 08

always when using plip (on other machine with tickless kernel and plip I
get no errors). Thebug happens both on 2.6.21 and 2.6.22-rc1

This patch fixes that. Note that plip calls netif_rx neither from hardware
interrupt nor from ksoftirqd, so there is no one who would wake
ksoftirqd then. netif_tx calls only
__raise_softirq_irqoff(NET_RX_SOFTIRQ), which sets softirq bit, but
doesn't wake ksoftirqd.

[ tglx: Removed the remaining users of __raise_softirq_irqoff() as well. ]
Signed-off-by: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

net/core/dev.c

@@ -2879,7 +2879,7 @@ out:
 
 softnet_break:
 	__get_cpu_var(netdev_rx_stat).time_squeeze++;
-	__raise_softirq_irqoff(NET_RX_SOFTIRQ);
+	raise_softirq_irqoff(NET_RX_SOFTIRQ);
 	goto out;
 }