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authorNathan Lynch <ntl@pobox.com>2008-06-04 08:30:54 +1000
committerPaul Mackerras <paulus@samba.org>2008-06-09 11:32:41 +1000
commit0d5799449f0f373ca12681d86c941ae464146a37 (patch)
treecf61fc411adac7661c7a69ccef1dc6a171cf473e
parent420b5eeaee5b877829c4f0a514a5ad21448596af (diff)
downloadblackbird-obmc-linux-0d5799449f0f373ca12681d86c941ae464146a37.tar.gz
blackbird-obmc-linux-0d5799449f0f373ca12681d86c941ae464146a37.zip
[POWERPC] Make walk_memory_resource available with MEMORY_HOTPLUG=n
The ehea driver was recently changed[1] to use walk_memory_resource() to detect the system's memory layout. However, walk_memory_resource() is available only when memory hotplug is enabled. So CONFIG_EHEA was made to depend on MEMORY_HOTPLUG [2], but it is inappropriate for a network driver to have such a dependency. Make the declaration of walk_memory_resource() and its powerpc implementation (ehea is powerpc-specific) unconditionally available. [1] 48cfb14f8b89d4d5b3df6c16f08b258686fb12ad "ehea: Add DLPAR memory remove support" [2] fb7b6ca2b6b7c23b52be143bdd5f55a23b9780c8 "ehea: Add dependency to Kconfig" Signed-off-by: Nathan Lynch <ntl@pobox.com> Acked-by: Badari Pulavarty <pbadari@us.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
-rw-r--r--arch/powerpc/mm/mem.c3
-rw-r--r--include/linux/memory_hotplug.h16
2 files changed, 9 insertions, 10 deletions
diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
index f67e118116fa..51f82d83bf14 100644
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@@ -151,6 +151,7 @@ out:
return ret;
}
#endif /* CONFIG_MEMORY_HOTREMOVE */
+#endif /* CONFIG_MEMORY_HOTPLUG */
/*
* walk_memory_resource() needs to make sure there is no holes in a given
@@ -184,8 +185,6 @@ walk_memory_resource(unsigned long start_pfn, unsigned long nr_pages, void *arg,
}
EXPORT_SYMBOL_GPL(walk_memory_resource);
-#endif /* CONFIG_MEMORY_HOTPLUG */
-
void show_mem(void)
{
unsigned long total = 0, reserved = 0;
diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h
index 73e358612eaf..ea9f5ad9ec8e 100644
--- a/include/linux/memory_hotplug.h
+++ b/include/linux/memory_hotplug.h
@@ -77,14 +77,6 @@ extern int __add_pages(struct zone *zone, unsigned long start_pfn,
extern int __remove_pages(struct zone *zone, unsigned long start_pfn,
unsigned long nr_pages);
-/*
- * Walk through all memory which is registered as resource.
- * arg is (start_pfn, nr_pages, private_arg_pointer)
- */
-extern int walk_memory_resource(unsigned long start_pfn,
- unsigned long nr_pages, void *arg,
- int (*func)(unsigned long, unsigned long, void *));
-
#ifdef CONFIG_NUMA
extern int memory_add_physaddr_to_nid(u64 start);
#else
@@ -199,6 +191,14 @@ static inline void register_page_bootmem_info_node(struct pglist_data *pgdat)
#endif /* ! CONFIG_MEMORY_HOTPLUG */
+/*
+ * Walk through all memory which is registered as resource.
+ * arg is (start_pfn, nr_pages, private_arg_pointer)
+ */
+extern int walk_memory_resource(unsigned long start_pfn,
+ unsigned long nr_pages, void *arg,
+ int (*func)(unsigned long, unsigned long, void *));
+
extern int add_memory(int nid, u64 start, u64 size);
extern int arch_add_memory(int nid, u64 start, u64 size);
extern int remove_memory(u64 start, u64 size);
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