From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ryan Harper <ryanh@us.ibm.com>
Subject: Re: Numa=on broken?
Date: Fri, 4 May 2007 08:38:21 -0500
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To: Ryan Harper <ryanh@us.ibm.com>
Cc: "Subrahmanian, Raj" <raj.subrahmanian@unisys.com>, xen-devel@lists.xensource.com
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* Ryan Harper <ryanh@us.ibm.com> [2007-05-04 08:34]:
> * Subrahmanian, Raj <raj.subrahmanian@unisys.com> [2007-05-04 01:23]:
> > Ryan,
> > I did check out the mail discussion where you encountered and fixed
> > this.
> > I am seeing this again on 15009, unstable and in 15021 3.1. rc7.
> > I have included the debug messages in both runs.
> 
> Hrm, well, we need to see which node the request is failing in so we can
> figure out how to initialize the heap.  I'm attaching a patch that
> should hopefully dump out which node the memory request is failing in.
> 
> Last time, it was the xmalloc() in xen/common/page_alloc.c in
> init_heap_pages().
> 
> Give this patch a spin and email me the output.

Here is one that actually compiles.


-- 
Ryan Harper
Software Engineer; Linux Technology Center
IBM Corp., Austin, Tx
(512) 838-9253   T/L: 678-9253
ryanh@us.ibm.com

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diff -r 3a5722420de7 xen/common/page_alloc.c
--- a/xen/common/page_alloc.c	Thu May 03 19:25:47 2007 +0100
+++ b/xen/common/page_alloc.c	Fri May 04 08:36:42 2007 -0500
@@ -353,6 +353,8 @@ static struct page_info *alloc_heap_page
     ASSERT(zone_lo <= zone_hi);
     ASSERT(zone_hi < NR_ZONES);
 
+    printk("%s: request for node %d\n", __func__, node);
+
     if ( unlikely(order > MAX_ORDER) )
         return NULL;
 
@@ -543,8 +545,10 @@ void init_heap_pages(
 
         if ( !avail[nid_curr] )
         {
+            printk("%s: attempting to initialize avail[%d]\n", __func__, nid_curr);
             avail[nid_curr] = xmalloc_array(unsigned long, NR_ZONES);
             memset(avail[nid_curr], 0, NR_ZONES * sizeof(long));
+            printk("%s: attempting to initialize _heap[%d]\n", __func__, nid_curr);
             _heap[nid_curr] = xmalloc(heap_by_zone_and_order_t);
             init_heap_block(_heap[nid_curr]);
         }

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