From: Andrew Morton <akpm@linux-foundation.org>
To: Michal Hocko <mhocko@suse.cz>
Cc: linux-mm@kvack.org, Andrea Arcangeli <aarcange@redhat.com>,
Mel Gorman <mgorman@suse.de>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] mm: Define set_pmd_at for numabalance for CONFIG_PARAVIRT
Date: Fri, 18 Jan 2013 13:39:01 -0800 [thread overview]
Message-ID: <20130118133901.b445b348.akpm@linux-foundation.org> (raw)
In-Reply-To: <1358501604-6797-1-git-send-email-mhocko@suse.cz>
On Fri, 18 Jan 2013 10:33:24 +0100
Michal Hocko <mhocko@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 <mhocko@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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next prev parent reply other threads:[~2013-01-18 21:39 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-18 9:33 [PATCH] mm: Define set_pmd_at for numabalance for CONFIG_PARAVIRT Michal Hocko
2013-01-18 21:39 ` Andrew Morton [this message]
2013-01-19 9:36 ` Michal Hocko
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