From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Hemminger Subject: [PATCH 2/2] pktgen: nmi watchdog keep alive Date: Sat, 19 Sep 2009 22:21:03 -0700 Message-ID: <20090919222103.017b5d5f@nehalam> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org To: David Miller , Robert Olsson Return-path: Received: from mail.vyatta.com ([76.74.103.46]:33572 "EHLO mail.vyatta.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751269AbZITFVF (ORCPT ); Sun, 20 Sep 2009 01:21:05 -0400 Sender: netdev-owner@vger.kernel.org List-ID: 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 --- 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 #include #include +#include #include #include #include @@ -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