On Sat, Dec 22, 2012 at 02:27:57PM +0200, Aaro Koskinen wrote:
> Hi,
>
> It looks like commit 816422ad76474fed8052b6f7b905a054d082e59a
> (asm-generic, mm: pgtable: consolidate zero page helpers) broke
> MIPS/SPARSEMEM build in 3.8-rc1:
>
> CHK include/generated/uapi/linux/version.h
> CHK include/generated/utsrelease.h
> Checking missing-syscalls for N32
> CC arch/mips/kernel/asm-offsets.s
> In file included from /home/aaro/git/linux/arch/mips/include/asm/pgtable.h:388:0,
> from include/linux/mm.h:44,
> from arch/mips/kernel/asm-offsets.c:14:
> include/asm-generic/pgtable.h: In function 'my_zero_pfn':
> include/asm-generic/pgtable.h:462:9: error: implicit declaration of function 'page_to_section' [-Werror=implicit-function-declaration]
> In file included from arch/mips/kernel/asm-offsets.c:14:0:
> include/linux/mm.h: At top level:
> include/linux/mm.h:708:29: error: conflicting types for 'page_to_section'
> In file included from /home/aaro/git/linux/arch/mips/include/asm/pgtable.h:388:0,
> from include/linux/mm.h:44,
> from arch/mips/kernel/asm-offsets.c:14:
> include/asm-generic/pgtable.h:462:9: note: previous implicit declaration of 'page_to_section' was here
> cc1: some warnings being treated as errors
> make[1]: *** [arch/mips/kernel/asm-offsets.s] Error 1
> make: *** [archprepare] Error 2
The patch below works for me. Could you try?
From a123a406fdc3aee7ca0eae04b6b4a231872dbb51 Mon Sep 17 00:00:00 2001
From: "Kirill A. Shutemov" <kirill@xxxxxxxxxxxxx>
Date: Wed, 26 Dec 2012 03:19:55 +0300
Subject: [PATCH] asm-generic, mm: pgtable: convert my_zero_pfn() to macros to
fix build
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On MIPS if SPARSEMEM is enabled we've got this:
In file included from /home/kas/git/public/linux/arch/mips/include/asm/pgtable.h:552,
from include/linux/mm.h:44,
from arch/mips/kernel/asm-offsets.c:14:
include/asm-generic/pgtable.h: In function ‘my_zero_pfn’:
include/asm-generic/pgtable.h:466: error: implicit declaration of function ‘page_to_section’
In file included from arch/mips/kernel/asm-offsets.c:14:
include/linux/mm.h: At top level:
include/linux/mm.h:738: error: conflicting types for ‘page_to_section’
include/asm-generic/pgtable.h:466: note: previous implicit declaration of ‘page_to_section’ was here
Due header files inter-dependencies, the only way I see to fix it is
convert my_zero_pfn() for __HAVE_COLOR_ZERO_PAGE to macros.
Signed-off-by: Kirill A. Shutemov <kirill@xxxxxxxxxxxxx>
---
include/asm-generic/pgtable.h | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/include/asm-generic/pgtable.h b/include/asm-generic/pgtable.h
index 701beab..5cf680a 100644
--- a/include/asm-generic/pgtable.h
+++ b/include/asm-generic/pgtable.h
@@ -461,10 +461,8 @@ static inline int is_zero_pfn(unsigned long pfn)
return offset_from_zero_pfn <= (zero_page_mask >> PAGE_SHIFT);
}
-static inline unsigned long my_zero_pfn(unsigned long addr)
-{
- return page_to_pfn(ZERO_PAGE(addr));
-}
+#define my_zero_pfn(addr) page_to_pfn(ZERO_PAGE(addr))
+
#else
static inline int is_zero_pfn(unsigned long pfn)
{
--
1.8.0.2
--
Kirill A. Shutemov
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