netdev - [PATCH 2/2] pktgen: nmi watchdog keep alive

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Message-ID: <20090919222103.017b5d5f@nehalam>
Date:	Sat, 19 Sep 2009 22:21:03 -0700
From:	Stephen Hemminger <shemminger@...tta.com>
To:	David Miller <davem@...emloft.net>,
	Robert Olsson <robert@...julf.net>
Cc:	netdev@...r.kernel.org
Subject: [PATCH 2/2] pktgen: nmi watchdog keep alive

If pktgen gets really busy it takes up all the CPU,
and can starve the NMI thread and cause system reset.

Signed-off-by: Stephen Hemminger <shemminger@...tta.com>

--- a/net/core/pktgen.c	2009-09-19 11:28:53.762463050 -0700
+++ b/net/core/pktgen.c	2009-09-19 11:30:36.534459968 -0700
@@ -136,6 +136,7 @@
 #include <linux/delay.h>
 #include <linux/timer.h>
 #include <linux/list.h>
+#include <linux/nmi.h>
 #include <linux/init.h>
 #include <linux/skbuff.h>
 #include <linux/netdevice.h>
@@ -3369,6 +3370,7 @@ static void idle(struct pktgen_dev *pkt_
 {
 	ktime_t idle_start = ktime_now();
 
+	touch_nmi_watchdog();
 	if (need_resched())
 		schedule();
 	else
--
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