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/20230204-030455 base: 1440f576022887004f719883acb094e7e0dd4944 patch link: https://lore.kernel.org/r/20230203190413.2559707-3-nphamcs%40gmail.com patch subject: [PATCH v9 2/3] cachestat: implement cachestat syscall config: arm-allnoconfig (https://download.01.org/0day-ci/archive/20230204/202302040606.Q2Z9z4KL-lkp@xxxxxxxxx/config) compiler: arm-linux-gnueabi-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/49a57ed71ac2c005231660c85c3f30c4b47d8b7b 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/20230204-030455 git checkout 49a57ed71ac2c005231660c85c3f30c4b47d8b7b # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <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, loff_t off, size_t len, | ^~~~~~~~~~~~~~ In file included from mm/filemap.c:25: >> include/linux/syscalls.h:243:25: error: conflicting types for 'sys_cachestat'; have 'long int(unsigned int, loff_t, size_t, struct cachestat *, unsigned int)' {aka 'long int(unsigned int, long long int, unsigned int, struct cachestat *, unsigned int)'} 243 | asmlinkage long sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \ | ^~~ include/linux/syscalls.h:229:9: note: in expansion of macro '__SYSCALL_DEFINEx' 229 | __SYSCALL_DEFINEx(x, sname, __VA_ARGS__) | ^~~~~~~~~~~~~~~~~ include/linux/syscalls.h:222:36: note: in expansion of macro 'SYSCALL_DEFINEx' 222 | #define SYSCALL_DEFINE5(name, ...) SYSCALL_DEFINEx(5, _##name, __VA_ARGS__) | ^~~~~~~~~~~~~~~ mm/filemap.c:4095:1: note: in expansion of macro 'SYSCALL_DEFINE5' 4095 | SYSCALL_DEFINE5(cachestat, unsigned int, fd, loff_t, off, size_t, len, | ^~~~~~~~~~~~~~~ include/linux/syscalls.h:1060:17: note: previous declaration of 'sys_cachestat' with type 'long int(unsigned int, long unsigned int, long unsigned int, size_t, struct cachestat *, unsigned int)' {aka 'long int(unsigned int, long unsigned int, long unsigned int, unsigned int, struct cachestat *, unsigned int)'} 1060 | asmlinkage long sys_cachestat(unsigned int fd, unsigned long off_low, | ^~~~~~~~~~~~~ vim +243 include/linux/syscalls.h 1bd21c6c21e848 Dominik Brodowski 2018-04-05 232 e145242ea0df6b Dominik Brodowski 2018-04-09 233 /* e145242ea0df6b Dominik Brodowski 2018-04-09 234 * The asmlinkage stub is aliased to a function named __se_sys_*() which e145242ea0df6b Dominik Brodowski 2018-04-09 235 * sign-extends 32-bit ints to longs whenever needed. The actual work is e145242ea0df6b Dominik Brodowski 2018-04-09 236 * done within __do_sys_*(). e145242ea0df6b Dominik Brodowski 2018-04-09 237 */ 1bd21c6c21e848 Dominik Brodowski 2018-04-05 238 #ifndef __SYSCALL_DEFINEx bed1ffca022cc8 Frederic Weisbecker 2009-03-13 239 #define __SYSCALL_DEFINEx(x, name, ...) \ bee20031772af3 Arnd Bergmann 2018-06-19 240 __diag_push(); \ bee20031772af3 Arnd Bergmann 2018-06-19 241 __diag_ignore(GCC, 8, "-Wattribute-alias", \ bee20031772af3 Arnd Bergmann 2018-06-19 242 "Type aliasing is used to sanitize syscall arguments");\ 83460ec8dcac14 Andi Kleen 2013-11-12 @243 asmlinkage long sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \ e145242ea0df6b Dominik Brodowski 2018-04-09 244 __attribute__((alias(__stringify(__se_sys##name)))); \ c9a211951c7c79 Howard McLauchlan 2018-03-21 245 ALLOW_ERROR_INJECTION(sys##name, ERRNO); \ e145242ea0df6b Dominik Brodowski 2018-04-09 246 static inline long __do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__));\ e145242ea0df6b Dominik Brodowski 2018-04-09 247 asmlinkage long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)); \ e145242ea0df6b Dominik Brodowski 2018-04-09 248 asmlinkage long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \ 1a94bc34768e46 Heiko Carstens 2009-01-14 249 { \ e145242ea0df6b Dominik Brodowski 2018-04-09 250 long ret = __do_sys##name(__MAP(x,__SC_CAST,__VA_ARGS__));\ 07fe6e00f6cca6 Al Viro 2013-01-21 251 __MAP(x,__SC_TEST,__VA_ARGS__); \ 2cf0966683430b Al Viro 2013-01-21 252 __PROTECT(x, ret,__MAP(x,__SC_ARGS,__VA_ARGS__)); \ 2cf0966683430b Al Viro 2013-01-21 253 return ret; \ 1a94bc34768e46 Heiko Carstens 2009-01-14 254 } \ bee20031772af3 Arnd Bergmann 2018-06-19 255 __diag_pop(); \ e145242ea0df6b Dominik Brodowski 2018-04-09 256 static inline long __do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) 1bd21c6c21e848 Dominik Brodowski 2018-04-05 257 #endif /* __SYSCALL_DEFINEx */ 1a94bc34768e46 Heiko Carstens 2009-01-14 258 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
