forked from Minki/linux
36b390fd62
The recently merged HPT (Hash Page Table) resize support broke the build
when BOOK3S_64=n (ie. 32-bit or 64-bit Book3E) and MEMORY_HOTPLUG=y:
arch/powerpc/mm/mem.o: In function `.arch_add_memory':
(.text+0x4e4): undefined reference to `.resize_hpt_for_hotplug'
Fix it by adding a dummy version.
Fixes: 438cc81a41 ("powerpc/pseries: Automatically resize HPT for memory hot add/remove")
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
40 lines
1.1 KiB
C
40 lines
1.1 KiB
C
#ifndef _ASM_POWERPC_SPARSEMEM_H
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#define _ASM_POWERPC_SPARSEMEM_H 1
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#ifdef __KERNEL__
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#ifdef CONFIG_SPARSEMEM
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/*
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* SECTION_SIZE_BITS 2^N: how big each section will be
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* MAX_PHYSADDR_BITS 2^N: how much physical address space we have
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* MAX_PHYSMEM_BITS 2^N: how much memory we can have in that space
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*/
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#define SECTION_SIZE_BITS 24
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#define MAX_PHYSADDR_BITS 46
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#define MAX_PHYSMEM_BITS 46
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#endif /* CONFIG_SPARSEMEM */
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#ifdef CONFIG_MEMORY_HOTPLUG
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extern int create_section_mapping(unsigned long start, unsigned long end);
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extern int remove_section_mapping(unsigned long start, unsigned long end);
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#ifdef CONFIG_PPC_BOOK3S_64
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extern void resize_hpt_for_hotplug(unsigned long new_mem_size);
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#else
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static inline void resize_hpt_for_hotplug(unsigned long new_mem_size) { }
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#endif
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#ifdef CONFIG_NUMA
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extern int hot_add_scn_to_nid(unsigned long scn_addr);
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#else
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static inline int hot_add_scn_to_nid(unsigned long scn_addr)
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{
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return 0;
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}
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#endif /* CONFIG_NUMA */
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#endif /* CONFIG_MEMORY_HOTPLUG */
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#endif /* __KERNEL__ */
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#endif /* _ASM_POWERPC_SPARSEMEM_H */
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