Re: + mm-mempolicy-wire-up-syscall-set_mempolicy_home_node.patch added to -mm tree

kernel test robot [off-list ref] writes:

Hi,

I love your patch! Perhaps something to improve:

[auto build test WARNING on arm64/for-next/core]
[also build test WARNING on deller-parisc/for-next linus/master v5.16-rc3]
[cannot apply to geert-m68k/for-next powerpc/next s390/features arnd-asm-generic/master tip/x86/asm davem-sparc/master next-20211203]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/akpm-linux-foundation-org/mm-mempolicy-wire-up-syscall-set_mempolicy_home_node-patch-added-to-mm-tree/20211203-065847
base:   https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-next/core
config: arm64-randconfig-r025-20211203 (https://download.01.org/0day-ci/archive/20211206/202112060718.JbZsyJcP-lkp@intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 1e328b06c15273edf4a40a27ca24931b5efb3a87)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install arm64 cross compiling tool for clang build
        # apt-get install binutils-aarch64-linux-gnu
        # https://github.com/0day-ci/linux/commit/d7bb34dec7840474ed1ad87136b47eb1ea0c8bee
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review akpm-linux-foundation-org/mm-mempolicy-wire-up-syscall-set_mempolicy_home_node-patch-added-to-mm-tree/20211203-065847
        git checkout d7bb34dec7840474ed1ad87136b47eb1ea0c8bee
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <redacted>

All warnings (new ones prefixed by >>):

           asmlinkage long __weak __arm64_sys_##name(const struct pt_regs *regs)   \
                                  ^
   <scratch space>:161:1: note: expanded from here
   __arm64_sys_process_madvise
   ^
   kernel/sys_ni.c:292:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   arch/arm64/include/asm/syscall_wrapper.h:76:13: note: expanded from macro 'COND_SYSCALL'
           asmlinkage long __weak __arm64_sys_##name(const struct pt_regs *regs)   \
                      ^
   kernel/sys_ni.c:293:1: warning: no previous prototype for function '__arm64_sys_process_mrelease' [-Wmissing-prototypes]
   COND_SYSCALL(process_mrelease);
   ^
   arch/arm64/include/asm/syscall_wrapper.h:76:25: note: expanded from macro 'COND_SYSCALL'
           asmlinkage long __weak __arm64_sys_##name(const struct pt_regs *regs)   \
                                  ^
   <scratch space>:162:1: note: expanded from here
   __arm64_sys_process_mrelease

These build warnings with W=1 are related to arm header includes. arm64
expand syscall macro such that '__arm64_' is added to the syscall
handler name. Hence the include  linux/syscall.h that have below
prototype is not sufficient.   
asmlinkage long sys_set_mempolicy_home_node(unsigned long start, unsigned long len,
					    unsigned long home_node,
					    unsigned long flags);


That should be fixed outside this series.

-aneesh