From 6b6427637595a0386674a51c65449f3004115a91 Mon Sep 17 00:00:00 2001
From: guanglei <guanglei>
Date: Tue, 4 Jul 2006 03:57:49 +0000
Subject: add addr_to_node() from Jose Santos

---
 tapset/memory.stp | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

(limited to 'tapset/memory.stp')

diff --git a/tapset/memory.stp b/tapset/memory.stp
index 9289ae5e..2682b5a7 100644
--- a/tapset/memory.stp
+++ b/tapset/memory.stp
@@ -14,3 +14,19 @@ probe pagefault
 	write_access = $write_access
 	address =  $address
 }
+
+/* Return which node the given address belongs to in a NUMA system */
+function addr_to_node:long(addr:long)  /* pure */ 
+%{
+        int nid;
+        int pfn = __pa(THIS->addr) >> PAGE_SHIFT;
+        for_each_online_node(nid)
+                if ( node_start_pfn(nid) <= pfn &&
+                        pfn < (node_start_pfn(nid) +
+                        NODE_DATA(nid)->node_spanned_pages) )
+                {
+			THIS->__retvalue = nid;
+                        break;
+                }
+
+%}
-- 
cgit