powerpc/64s: Fix CONFIG_NUMA=n build due to create_section_mapping()
[ Upstream commit ede66cd224
]
With CONFIG_NUMA=n the build fails with:
arch/powerpc/mm/book3s64/pgtable.c:275:15: error: no previous prototype for ‘create_section_mapping’ [-Werror=missing-prototypes]
275 | int __meminit create_section_mapping(unsigned long start, unsigned long end,
| ^~~~~~~~~~~~~~~~~~~~~~
That happens because the prototype for create_section_mapping() is in
asm/mmzone.h, but asm/mmzone.h is only included by linux/mmzone.h
when CONFIG_NUMA=y.
In fact the prototype is only needed by arch/powerpc/mm code, so move
the prototype into arch/powerpc/mm/mmu_decl.h, which also fixes the
build error.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20231129131919.2528517-5-mpe@ellerman.id.au
Signed-off-by: Sasha Levin <sashal@kernel.org>
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@ -43,10 +43,5 @@ u64 memory_hotplug_max(void);
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#define memory_hotplug_max() memblock_end_of_DRAM()
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#endif /* CONFIG_NUMA */
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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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int nid, pgprot_t prot);
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#endif
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#endif /* __KERNEL__ */
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#endif /* _ASM_MMZONE_H_ */
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@ -181,3 +181,8 @@ static inline bool debug_pagealloc_enabled_or_kfence(void)
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{
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return IS_ENABLED(CONFIG_KFENCE) || debug_pagealloc_enabled();
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}
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#ifdef CONFIG_MEMORY_HOTPLUG
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int create_section_mapping(unsigned long start, unsigned long end,
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int nid, pgprot_t prot);
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#endif
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