Date: Wed, 14 Dec 2005 15:23:36 -0800 (PST)
From: hawkes@sgi.com
To: Tony Luck <tony.luck@gmail.com>, Andrew Morton <akpm@osdl.org>,
       linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: Jack Steiner <steiner@sgi.com>, Keith Owens <kaos@sgi.com>, hawkes@sgi.com
Message-Id: <20051214232336.8314.29391.sendpatchset@tomahawk.engr.sgi.com>
Subject: [PATCH] ia64: eliminate softlockup warning
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 1172
Lines: 28

Fix an unnecessary softlockup watchdog warning in the ia64
uncached_build_memmap() that occurs occasionally at 256p and always at
512p.  The problem occurs at boot time.

It would be good if we had a cleaner mechanism to temporarily silence
the watchdog thread, e.g.,
    http://marc.theaimsgroup.com/?l=linux-kernel&m=111552476401175&w=2
but until that patch gets merged, this fix will have to suffice.

Signed-off-by: John Hawkes <hawkes@sgi.com>

Index: linux/arch/ia64/kernel/uncached.c
===================================================================
--- linux.orig/arch/ia64/kernel/uncached.c	2005-12-06 15:12:14.000000000 -0800
+++ linux/arch/ia64/kernel/uncached.c	2005-12-14 14:50:55.000000000 -0800
@@ -210,6 +210,7 @@
 
 	dprintk(KERN_ERR "uncached_build_memmap(%lx %lx)\n", start, end);
 
+	touch_softlockup_watchdog();
 	memset((char *)start, 0, length);
 
 	node = paddr_to_nid(start - __IA64_UNCACHED_OFFSET);
-
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