We _know_ which node pages in general belong to, at least at a
very gross level in node_{start,end}_pfn[]. Use those to target
the allocations of pages.
Signed-off-by: Andy Whitcroft <[email protected]>
Signed-off-by: Dave Hansen <[email protected]>
---
memhotplug-dave/arch/i386/mm/discontig.c | 15 +++++++++++++++
1 files changed, 15 insertions(+)
diff -puN arch/i386/mm/discontig.c~FROM-MM-add-early_pfn_to_nid arch/i386/mm/discontig.c
--- memhotplug/arch/i386/mm/discontig.c~FROM-MM-add-early_pfn_to_nid 2005-03-25 08:17:12.000000000 -0800
+++ memhotplug-dave/arch/i386/mm/discontig.c 2005-03-25 08:17:12.000000000 -0800
@@ -149,6 +149,21 @@ static void __init find_max_pfn_node(int
BUG();
}
+/* Find the owning node for a pfn. */
+int early_pfn_to_nid(unsigned long pfn)
+{
+ int nid;
+
+ for_each_node(nid) {
+ if (node_end_pfn[nid] == 0)
+ break;
+ if (node_start_pfn[nid] <= pfn && node_end_pfn[nid] >= pfn)
+ return nid;
+ }
+
+ return 0;
+}
+
/*
* Allocate memory for the pg_data_t for this node via a crude pre-bootmem
* method. For node zero take this from the bottom of memory, for
_
-
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