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

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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>
This commit is contained in:
Michael Ellerman 2017-02-15 19:54:55 +11:00
parent da0e7e6276
commit 36b390fd62
1 changed files with 7 additions and 1 deletions
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8
arch/powerpc/include/asm/sparsemem.h
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@ -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