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-rw-r--r--arch/powerpc/include/asm/sparsemem.h32
1 files changed, 32 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/sparsemem.h b/arch/powerpc/include/asm/sparsemem.h
new file mode 100644
index 00000000000..54a47ea2c3a
--- /dev/null
+++ b/arch/powerpc/include/asm/sparsemem.h
@@ -0,0 +1,32 @@
1#ifndef _ASM_POWERPC_SPARSEMEM_H
2#define _ASM_POWERPC_SPARSEMEM_H 1
3#ifdef __KERNEL__
4
5#ifdef CONFIG_SPARSEMEM
6/*
7 * SECTION_SIZE_BITS 2^N: how big each section will be
8 * MAX_PHYSADDR_BITS 2^N: how much physical address space we have
9 * MAX_PHYSMEM_BITS 2^N: how much memory we can have in that space
10 */
11#define SECTION_SIZE_BITS 24
12
13#define MAX_PHYSADDR_BITS 44
14#define MAX_PHYSMEM_BITS 44
15
16#endif /* CONFIG_SPARSEMEM */
17
18#ifdef CONFIG_MEMORY_HOTPLUG
19extern void create_section_mapping(unsigned long start, unsigned long end);
20extern int remove_section_mapping(unsigned long start, unsigned long end);
21#ifdef CONFIG_NUMA
22extern int hot_add_scn_to_nid(unsigned long scn_addr);
23#else
24static inline int hot_add_scn_to_nid(unsigned long scn_addr)
25{
26 return 0;
27}
28#endif /* CONFIG_NUMA */
29#endif /* CONFIG_MEMORY_HOTPLUG */
30
31#endif /* __KERNEL__ */
32#endif /* _ASM_POWERPC_SPARSEMEM_H */