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authorAndi Kleen <ak@suse.de>2006-04-07 13:49:15 -0400
committerLinus Torvalds <torvalds@g5.osdl.org>2006-04-09 14:53:16 -0400
commit9d99aaa31f5994d1923c3713ce9144c4c42332e1 (patch)
treeae608593ca196dd6493cccbdfc1b8dd098e91ee8 /include/linux
parent805e8c03c9ea9bdb402a36341e02ec24825d5417 (diff)
[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')
-rw-r--r--include/linux/init.h3
-rw-r--r--include/linux/memory_hotplug.h14
2 files changed, 9 insertions, 8 deletions
diff --git a/include/linux/init.h b/include/linux/init.h
index ed0ac7c39fdc..93dcbe1abb4c 100644
--- a/include/linux/init.h
+++ b/include/linux/init.h
@@ -245,7 +245,8 @@ void __init parse_early_param(void);
245#define __cpuexitdata __exitdata 245#define __cpuexitdata __exitdata
246#endif 246#endif
247 247
248#ifdef CONFIG_MEMORY_HOTPLUG 248#if defined(CONFIG_MEMORY_HOTPLUG) || defined(CONFIG_ACPI_HOTPLUG_MEMORY) \
249 || defined(CONFIG_ACPI_HOTPLUG_MEMORY_MODULE)
249#define __meminit 250#define __meminit
250#define __meminitdata 251#define __meminitdata
251#define __memexit 252#define __memexit
diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h
index 968b1aa3732c..4ca3e6ad03ec 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);
58/* need some defines for these for archs that don't support it */ 58/* need some defines for these for archs that don't support it */
59extern void online_page(struct page *page); 59extern void online_page(struct page *page);
60/* VM interface that may be used by firmware interface */ 60/* VM interface that may be used by firmware interface */
61extern int add_memory(u64 start, u64 size);
62extern int remove_memory(u64 start, u64 size);
63extern int online_pages(unsigned long, unsigned long); 61extern int online_pages(unsigned long, unsigned long);
64 62
65/* reasonably generic interface to expand the physical pages in a zone */ 63/* reasonably generic interface to expand the physical pages in a zone */
@@ -92,11 +90,6 @@ static inline int mhp_notimplemented(const char *func)
92 return -ENOSYS; 90 return -ENOSYS;
93} 91}
94 92
95static inline int __add_pages(struct zone *zone, unsigned long start_pfn,
96 unsigned long nr_pages)
97{
98 return mhp_notimplemented(__FUNCTION__);
99}
100#endif /* ! CONFIG_MEMORY_HOTPLUG */ 93#endif /* ! CONFIG_MEMORY_HOTPLUG */
101static inline int __remove_pages(struct zone *zone, unsigned long start_pfn, 94static inline int __remove_pages(struct zone *zone, unsigned long start_pfn,
102 unsigned long nr_pages) 95 unsigned long nr_pages)
@@ -105,4 +98,11 @@ static inline int __remove_pages(struct zone *zone, unsigned long start_pfn,
105 dump_stack(); 98 dump_stack();
106 return -ENOSYS; 99 return -ENOSYS;
107} 100}
101
102#if defined(CONFIG_MEMORY_HOTPLUG) || defined(CONFIG_ACPI_HOTPLUG_MEMORY) \
103 || defined(CONFIG_ACPI_HOTPLUG_MEMORY_MODULE)
104extern int add_memory(u64 start, u64 size);
105extern int remove_memory(u64 start, u64 size);
106#endif
107
108#endif /* __LINUX_MEMORY_HOTPLUG_H */ 108#endif /* __LINUX_MEMORY_HOTPLUG_H */