kernel test robot <lkp@xxxxxxxxx> 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@xxxxxxxxx/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 <lkp@xxxxxxxxx> > > 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
