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Commit 36b390fd authored by Michael Ellerman's avatar Michael Ellerman
Browse files

powerpc/mm: Fix build break with BOOK3S_64=n and MEMORY_HOTPLUG=y 



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: 438cc81a ("powerpc/pseries: Automatically resize HPT for memory hot add/remove")
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
parent da0e7e62

arch/powerpc/include/asm/sparsemem.h

+7 −1
Original line number Diff line number Diff line
@@ -16,9 +16,15 @@ 
#endif /* CONFIG_SPARSEMEM */



#ifdef CONFIG_MEMORY_HOTPLUG

extern void resize_hpt_for_hotplug(unsigned long new_mem_size);

extern int create_section_mapping(unsigned long start, unsigned long end);

extern int remove_section_mapping(unsigned long start, unsigned long end);



#ifdef CONFIG_PPC_BOOK3S_64

extern void resize_hpt_for_hotplug(unsigned long new_mem_size);

#else

static inline void resize_hpt_for_hotplug(unsigned long new_mem_size) { }

#endif



#ifdef CONFIG_NUMA

extern int hot_add_scn_to_nid(unsigned long scn_addr);

#else