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From:   Naresh Kamboju <naresh.kamboju@linaro.org>
Date:   Wed, 3 Feb 2021 21:21:16 +0530
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Subject: memory_model.h:64:14: error: implicit declaration of function 'page_to_section'
To:     Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Linux Next Mailing List <linux-next@vger.kernel.org>,
        linux-mm <linux-mm@kvack.org>,
        Linux-Arch <linux-arch@vger.kernel.org>,
        lkft-triage@lists.linaro.org, linux-mips@vger.kernel.org,
        Linux-sh list <linux-sh@vger.kernel.org>
Cc:     Randy Dunlap <rdunlap@infradead.org>,
        Stephen Rothwell <sfr@canb.auug.org.au>,
        Arnd Bergmann <arnd@arndb.de>,
        Andrew Morton <akpm@linux-foundation.org>,
        Geert Uytterhoeven <geert@linux-m68k.org>,
        Pavel Tatashin <pasha.tatashin@oracle.com>
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Linux next tag 20210203 the mips and sh builds failed due to below errors.
Following builds failed with gcc-8, gcc-9 and gcc-10,
  - mips (cavium_octeon_defconfig)
  - sh (defconfig)
  - sh (shx3_defconfig)

make --silent --keep-going --jobs=8
O=/home/tuxbuild/.cache/tuxmake/builds/1/tmp ARCH=mips
CROSS_COMPILE=mips-linux-gnu- 'CC=sccache mips-linux-gnu-gcc'
'HOSTCC=sccache gcc' uImage.gz
In file included from arch/mips/include/asm/page.h:258,
                 from arch/mips/include/asm/io.h:29,
                 from include/linux/io.h:13,
                 from arch/mips/include/asm/mips-cps.h:10,
                 from arch/mips/include/asm/smp-ops.h:16,
                 from arch/mips/include/asm/smp.h:21,
                 from include/linux/smp.h:84,
                 from arch/mips/include/asm/cpu-type.h:12,
                 from arch/mips/include/asm/timex.h:19,
                 from include/linux/timex.h:65,
                 from include/linux/time32.h:13,
                 from include/linux/time.h:60,
                 from include/linux/compat.h:10,
                 from arch/mips/kernel/asm-offsets.c:12:
include/linux/mm.h: In function 'is_pinnable_page':
include/asm-generic/memory_model.h:64:14: error: implicit declaration
of function 'page_to_section'; did you mean 'present_section'?
[-Werror=implicit-function-declaration]
  int __sec = page_to_section(__pg);   \
              ^~~~~~~~~~~~~~~
include/asm-generic/memory_model.h:81:21: note: in expansion of macro
'__page_to_pfn'
 #define page_to_pfn __page_to_pfn
                     ^~~~~~~~~~~~~
include/linux/mm.h:1135:15: note: in expansion of macro 'page_to_pfn'
   is_zero_pfn(page_to_pfn(page));
               ^~~~~~~~~~~
In file included from arch/mips/kernel/asm-offsets.c:15:
include/linux/mm.h: At top level:
include/linux/mm.h:1512:29: error: conflicting types for 'page_to_section'
 static inline unsigned long page_to_section(const struct page *page)
                             ^~~~~~~~~~~~~~~
Steps to reproduce:
--------------------------
# TuxMake is a command line tool and Python library that provides
# portable and repeatable Linux kernel builds across a variety of
# architectures, toolchains, kernel configurations, and make targets.
#
# TuxMake supports the concept of runtimes.
# See https://docs.tuxmake.org/runtimes/, for that to work it requires
# that you install podman or docker on your system.
#
# To install tuxmake on your system globally:
# sudo pip3 install -U tuxmake
#
# See https://docs.tuxmake.org/ for complete documentation.


tuxmake --runtime podman --target-arch mips --toolchain gcc-10
--kconfig cavium_octeon_defconfig


-- 
Linaro LKFT
https://lkft.linaro.org