From: Neil Horman <nhorman@redhat.com>
Date: Mon, 30 Jun 2008 13:30:53 -0400
Subject: [ia64] softlock: prevent endless warnings in kdump
Message-id: 20080630173053.GA8366@hmsendeavour.rdu.redhat.com
O-Subject: [RHEL 5.3 PATCH] softlock: Prevent endless softlockup warnings on some ia64 systems (bz 453200)
Bugzilla: 453200
RH-Acked-by: Prarit Bhargava <prarit@redhat.com>

Hey-
	Fujitsu recently noticed that when they configure kdump to halt the
system after a dump operation (rather than a reboot) on their primequest ia64
systems, they get an endless spew of softlockup messages on their console.  They
tracked down the problem to an upstream patch which (among other things),
supressed softlockup warnings when the system wasn't in SYSTEM_RUNNING state.
Oddly this commit (# 6687a97d4041f996f725902d2990e5de6ef5cbe5) has already been
backported to RHEL, except for this missing hunk.  This patch is the remainder
of that hunk, backported to RHEL5.  Tested successfully by Fujitsu.

Neil

diff --git a/kernel/softlockup.c b/kernel/softlockup.c
index b942e11..7f55472 100644
--- a/kernel/softlockup.c
+++ b/kernel/softlockup.c
@@ -103,6 +103,12 @@ void softlockup_tick(struct pt_regs *regs)
 		return;
 	}
 
+	/* do not print during early bootup: */
+	if (unlikely(system_state != SYSTEM_RUNNING)) {
+		touch_softlockup_watchdog();
+		return;
+	}
+
 	now = jiffies;
 
 	/* Wake up the high-prio watchdog task every second: */