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authorAndi Kleen <ak@suse.de>2006-04-07 19:49:15 +0200
committerLinus Torvalds <torvalds@g5.osdl.org>2006-04-09 11:53:16 -0700
commit9d99aaa31f5994d1923c3713ce9144c4c42332e1 (patch)
treeae608593ca196dd6493cccbdfc1b8dd098e91ee8 /include/linux/memory_hotplug.h
parent805e8c03c9ea9bdb402a36341e02ec24825d5417 (diff)
downloadop-kernel-dev-9d99aaa31f5994d1923c3713ce9144c4c42332e1.zip
op-kernel-dev-9d99aaa31f5994d1923c3713ce9144c4c42332e1.tar.gz
[PATCH] x86_64: Support memory hotadd without sparsemem
Memory hotadd doesn't need SPARSEMEM, but can be handled by just preallocating mem_maps. This only needs some untangling of ifdefs to enable the necessary code even without SPARSEMEM. Originally from Keith Mannthey, hacked by AK. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/memory_hotplug.h')
-rw-r--r--include/linux/memory_hotplug.h14
1 files changed, 7 insertions, 7 deletions
diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h
index 968b1aa..4ca3e6a 100644
--- a/include/linux/memory_hotplug.h
+++ b/include/linux/memory_hotplug.h
@@ -58,8 +58,6 @@ extern int add_one_highpage(struct page *page, int pfn, int bad_ppro);
/* need some defines for these for archs that don't support it */
extern void online_page(struct page *page);
/* VM interface that may be used by firmware interface */
-extern int add_memory(u64 start, u64 size);
-extern int remove_memory(u64 start, u64 size);
extern int online_pages(unsigned long, unsigned long);
/* reasonably generic interface to expand the physical pages in a zone */
@@ -92,11 +90,6 @@ static inline int mhp_notimplemented(const char *func)
return -ENOSYS;
}
-static inline int __add_pages(struct zone *zone, unsigned long start_pfn,
- unsigned long nr_pages)
-{
- return mhp_notimplemented(__FUNCTION__);
-}
#endif /* ! CONFIG_MEMORY_HOTPLUG */
static inline int __remove_pages(struct zone *zone, unsigned long start_pfn,
unsigned long nr_pages)
@@ -105,4 +98,11 @@ static inline int __remove_pages(struct zone *zone, unsigned long start_pfn,
dump_stack();
return -ENOSYS;
}
+
+#if defined(CONFIG_MEMORY_HOTPLUG) || defined(CONFIG_ACPI_HOTPLUG_MEMORY) \
+ || defined(CONFIG_ACPI_HOTPLUG_MEMORY_MODULE)
+extern int add_memory(u64 start, u64 size);
+extern int remove_memory(u64 start, u64 size);
+#endif
+
#endif /* __LINUX_MEMORY_HOTPLUG_H */
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