Re: [PATCH] i386 sparsemem: undefined early_pfn_to_nid when !NUMA

[Andy Whitcroft <apw@shadowen.org>]

Seem benign for normal use and allows testing for hotplug.  Tested
on my test boxes.

Andrew please apply to -mm.

-apw

=== 8< ===
On i386, early_pfn_to_nid() is only defined when discontig.c
is compiled in.  The current dependency doesn't reflect this,
probably because the default i386 config doesn't allow for
SPARSEMEM without NUMA.

But, we'll need SPARSEMEM && !NUMA for memory hotplug, and I
do this for testing anyway.

Andy, please forward on if you concur.

Signed-off-by: Dave Hansen <haveblue@us.ibm.com>
Signed-off-by: Andy Whitcroft <apw@shadowen.org>

diffstat sparsemem-i386-undefined-early_pfn_to_nid-when-not-NUMA
---
 Kconfig |    1 +
 1 files changed, 1 insertion(+)

diff -upN reference/arch/i386/Kconfig current/arch/i386/Kconfig
--- reference/arch/i386/Kconfig
+++ current/arch/i386/Kconfig
@@ -803,6 +803,7 @@ source "mm/Kconfig"
 config HAVE_ARCH_EARLY_PFN_TO_NID
 	bool
 	default y
+	depends on NUMA
 
 config HIGHPTE
 	bool "Allocate 3rd-level pagetables from highmem"
-
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