On Fri, 18 Jan 2013 10:33:24 +0100
Michal Hocko <mho...@suse.cz> wrote:
> CONFIG_PARAVIRT defines set_pmd_at only for CONFIG_TRANSPARENT_HUGEPAGE
> which leads to the following compile errors when randconfig selected
> CONFIG_NUMA_BALANCING && CONFIG_PARAVIRT && !CONFIG_TRANSPARENT_HUGEPAGE:
>
> mm/mprotect.c: In function ___change_pmd_protnuma___:
> mm/mprotect.c:120: error: implicit declaration of function ___set_pmd_at___
>
> mm/memory.c: In function ___do_pmd_numa_page___:
> mm/memory.c:3529: error: implicit declaration of function ___set_pmd_at___
>
> Signed-off-by: Michal Hocko <mho...@suse.cz>
> ---
> arch/x86/include/asm/paravirt.h | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h
> index a0facf3..f551e89 100644
> --- a/arch/x86/include/asm/paravirt.h
> +++ b/arch/x86/include/asm/paravirt.h
> @@ -528,7 +528,7 @@ static inline void set_pte_at(struct mm_struct *mm,
> unsigned long addr,
> PVOP_VCALL4(pv_mmu_ops.set_pte_at, mm, addr, ptep, pte.pte);
> }
>
> -#ifdef CONFIG_TRANSPARENT_HUGEPAGE
> +#if defined(CONFIG_TRANSPARENT_HUGEPAGE) || defined(CONFIG_NUMA_BALANCING)
> static inline void set_pmd_at(struct mm_struct *mm, unsigned long addr,
> pmd_t *pmdp, pmd_t pmd)
> {
Confused - there is no "#ifdef CONFIG_TRANSPARENT_HUGEPAGE" in there in
any kernel version I can think of.
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