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Message-ID: <005bf713-fb51-bf29-5f86-6f244cd49f35@c-s.fr>
Date: Thu, 5 Jul 2018 10:22:30 +0000
From: Christophe Leroy <christophe.leroy@....fr>
To: Alexandre Ghiti <alex@...ti.fr>, linux@...linux.org.uk,
catalin.marinas@....com, will.deacon@....com, tony.luck@...el.com,
fenghua.yu@...el.com, ralf@...ux-mips.org, paul.burton@...s.com,
jhogan@...nel.org, jejb@...isc-linux.org, deller@....de,
benh@...nel.crashing.org, paulus@...ba.org, mpe@...erman.id.au,
ysato@...rs.sourceforge.jp, dalias@...c.org, davem@...emloft.net,
tglx@...utronix.de, mingo@...hat.com, hpa@...or.com,
x86@...nel.org, arnd@...db.de,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
linux-ia64@...r.kernel.org, linux-mips@...ux-mips.org,
linux-parisc@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
linux-sh@...r.kernel.org, sparclinux@...r.kernel.org,
linux-arch@...r.kernel.org
Subject: Re: [PATCH v3 02/11] hugetlb: Introduce generic version of
hugetlb_free_pgd_range
On 07/05/2018 05:16 AM, Alexandre Ghiti wrote:
> arm, arm64, mips, parisc, sh, x86 architectures use the
> same version of hugetlb_free_pgd_range, so move this generic
> implementation into asm-generic/hugetlb.h.
>
> Signed-off-by: Alexandre Ghiti <alex@...ti.fr>
Build failure on mpc885_ads_defconfig
CC arch/powerpc/kernel/setup-common.o
In file included from arch/powerpc/kernel/setup-common.c:37:
./include/linux/hugetlb.h:191:65: error: expected identifier or '('
before '{' token
#define hugetlb_free_pgd_range(tlb, addr, end, floor, ceiling)
({BUG(); 0; })
^
./include/asm-generic/hugetlb.h:44:20: note: in expansion of macro
'hugetlb_free_pgd_range'
static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
^~~~~~~~~~~~~~~~~~~~~~
see below
> ---
> arch/arm/include/asm/hugetlb.h | 12 ++----------
> arch/arm64/include/asm/hugetlb.h | 10 ----------
> arch/ia64/include/asm/hugetlb.h | 5 +++--
> arch/mips/include/asm/hugetlb.h | 13 ++-----------
> arch/parisc/include/asm/hugetlb.h | 12 ++----------
> arch/powerpc/include/asm/hugetlb.h | 4 +++-
> arch/sh/include/asm/hugetlb.h | 12 ++----------
> arch/sparc/include/asm/hugetlb.h | 4 +++-
> arch/x86/include/asm/hugetlb.h | 11 ++---------
> include/asm-generic/hugetlb.h | 11 +++++++++++
> 10 files changed, 30 insertions(+), 64 deletions(-)
>
[snip]
> diff --git a/arch/powerpc/include/asm/hugetlb.h b/arch/powerpc/include/asm/hugetlb.h
> index 3225eb6402cc..de46ee16b615 100644
> --- a/arch/powerpc/include/asm/hugetlb.h
> +++ b/arch/powerpc/include/asm/hugetlb.h
> @@ -4,7 +4,6 @@
>
> #ifdef CONFIG_HUGETLB_PAGE
> #include <asm/page.h>
> -#include <asm-generic/hugetlb.h>
>
> extern struct kmem_cache *hugepte_cache;
>
> @@ -113,6 +112,7 @@ static inline void flush_hugetlb_page(struct vm_area_struct *vma,
> void flush_hugetlb_page(struct vm_area_struct *vma, unsigned long vmaddr);
> #endif
>
> +#define __HAVE_ARCH_HUGETLB_FREE_PGD_RANGE
> void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr,
> unsigned long end, unsigned long floor,
> unsigned long ceiling);
> @@ -193,4 +193,6 @@ static inline pte_t *hugepte_offset(hugepd_t hpd, unsigned long addr,
> }
> #endif /* CONFIG_HUGETLB_PAGE */
>
> +#include <asm-generic/hugetlb.h>
> +
That include was previously inside #ifdef CONFIG_HUGETLB_PAGE.
Why put it outside ?
Christophe
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