Hi Nhat, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on 1440f576022887004f719883acb094e7e0dd4944] url: https://github.com/intel-lab-lkp/linux/commits/Nhat-Pham/workingset-refactor-LRU-refault-to-expose-refault-recency-check/20230124-101311 base: 1440f576022887004f719883acb094e7e0dd4944 patch link: https://lore.kernel.org/r/20230124021118.154078-3-nphamcs%40gmail.com patch subject: [PATCH v7 2/3] cachestat: implement cachestat syscall config: mips-randconfig-r006-20230123 (https://download.01.org/0day-ci/archive/20230124/202301242133.cLyYLZH6-lkp@xxxxxxxxx/config) compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 4196ca3278f78c6e19246e54ab0ecb364e37d66a) 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 mips cross compiling tool for clang build # apt-get install binutils-mipsel-linux-gnu # https://github.com/intel-lab-lkp/linux/commit/f902a360bb453bd6885cd89d4f9ad4a40205fd15 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/20230124-101311 git checkout f902a360bb453bd6885cd89d4f9ad4a40205fd15 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips prepare If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> <stdin>:1565:2: warning: syscall cachestat not implemented [-W#warnings] #warning syscall cachestat not implemented ^ 1 warning generated. -- >> <stdin>:1565:2: warning: syscall cachestat not implemented [-W#warnings] #warning syscall cachestat not implemented ^ 1 warning generated. -- scripts/genksyms/parse.y: warning: 9 shift/reduce conflicts [-Wconflicts-sr] scripts/genksyms/parse.y: warning: 5 reduce/reduce conflicts [-Wconflicts-rr] scripts/genksyms/parse.y: note: rerun with option '-Wcounterexamples' to generate conflict counterexamples arch/mips/kernel/asm-offsets.c:26:6: warning: no previous prototype for function 'output_ptreg_defines' [-Wmissing-prototypes] void output_ptreg_defines(void) ^ arch/mips/kernel/asm-offsets.c:26:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void output_ptreg_defines(void) ^ static arch/mips/kernel/asm-offsets.c:78:6: warning: no previous prototype for function 'output_task_defines' [-Wmissing-prototypes] void output_task_defines(void) ^ arch/mips/kernel/asm-offsets.c:78:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void output_task_defines(void) ^ static arch/mips/kernel/asm-offsets.c:92:6: warning: no previous prototype for function 'output_thread_info_defines' [-Wmissing-prototypes] void output_thread_info_defines(void) ^ arch/mips/kernel/asm-offsets.c:92:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void output_thread_info_defines(void) ^ static arch/mips/kernel/asm-offsets.c:108:6: warning: no previous prototype for function 'output_thread_defines' [-Wmissing-prototypes] void output_thread_defines(void) ^ arch/mips/kernel/asm-offsets.c:108:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void output_thread_defines(void) ^ static arch/mips/kernel/asm-offsets.c:179:6: warning: no previous prototype for function 'output_mm_defines' [-Wmissing-prototypes] void output_mm_defines(void) ^ arch/mips/kernel/asm-offsets.c:179:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void output_mm_defines(void) ^ static arch/mips/kernel/asm-offsets.c:213:6: warning: no previous prototype for function 'output_sc_defines' [-Wmissing-prototypes] void output_sc_defines(void) ^ arch/mips/kernel/asm-offsets.c:213:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void output_sc_defines(void) ^ static arch/mips/kernel/asm-offsets.c:248:6: warning: no previous prototype for function 'output_signal_defined' [-Wmissing-prototypes] void output_signal_defined(void) ^ arch/mips/kernel/asm-offsets.c:248:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void output_signal_defined(void) ^ static 7 warnings generated. >> <stdin>:1565:2: warning: syscall cachestat not implemented [-W#warnings] #warning syscall cachestat not implemented ^ 1 warning generated. -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
