Hi Nhat, Thank you for the patch! Yet something to improve: [auto build test ERROR on 1440f576022887004f719883acb094e7e0dd4944] url: https://github.com/intel-lab-lkp/linux/commits/Nhat-Pham/workingset-refactor-LRU-refault-to-expose-refault-recency-check/20230219-153500 base: 1440f576022887004f719883acb094e7e0dd4944 patch link: https://lore.kernel.org/r/20230219073318.366189-3-nphamcs%40gmail.com patch subject: [PATCH v10 2/3] cachestat: implement cachestat syscall config: sparc-randconfig-r033-20230219 (https://download.01.org/0day-ci/archive/20230219/202302191708.tLz0L0ZE-lkp@xxxxxxxxx/config) compiler: sparc64-linux-gcc (GCC) 12.1.0 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 # https://github.com/intel-lab-lkp/linux/commit/d691a3b4a696ab20c9c5fe86c624e9e36814523c git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Nhat-Pham/workingset-refactor-LRU-refault-to-expose-refault-recency-check/20230219-153500 git checkout d691a3b4a696ab20c9c5fe86c624e9e36814523c # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=sparc olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=sparc SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Link: https://lore.kernel.org/oe-kbuild-all/202302191708.tLz0L0ZE-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): mm/filemap.c:4035:6: warning: no previous prototype for 'ksys_cachestat' [-Wmissing-prototypes] 4035 | long ksys_cachestat(unsigned int fd, size_t len, loff_t off, | ^~~~~~~~~~~~~~ >> mm/filemap.c:4102:34: error: expected ')' before 'unsigned' 4102 | COMPAT_SYSCALL_DEFINE6(cachestat, unsigned int, fd, size_t, len, | ^~~~~~~~~ | ) vim +4102 mm/filemap.c 4100 4101 #ifdef CONFIG_COMPAT > 4102 COMPAT_SYSCALL_DEFINE6(cachestat, unsigned int, fd, size_t, len, -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
