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: riscv-buildonly-randconfig-r005-20230219 (https://download.01.org/0day-ci/archive/20230219/202302191700.Pg6Yy5Xp-lkp@xxxxxxxxx/config) compiler: riscv64-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=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=riscv olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=riscv 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/202302191700.Pg6Yy5Xp-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, | ^~~~~~~~~~~~~~ In file included from arch/riscv/include/asm/elf.h:12, from include/linux/elf.h:6, from include/linux/module.h:19, from include/linux/device/driver.h:21, from include/linux/device.h:32, from include/linux/blk_types.h:11, from include/linux/writeback.h:13, from include/linux/memcontrol.h:22, from include/linux/swap.h:9, from mm/filemap.c:23: >> include/linux/compat.h:75:25: error: conflicting types for 'compat_sys_cachestat'; have 'long int(unsigned int, size_t, u32, u32, struct cachestat *, unsigned int)' {aka 'long int(unsigned int, long unsigned int, unsigned int, unsigned int, struct cachestat *, unsigned int)'} 75 | asmlinkage long compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \ | ^~~~~~~~~~ include/linux/compat.h:63:9: note: in expansion of macro 'COMPAT_SYSCALL_DEFINEx' 63 | COMPAT_SYSCALL_DEFINEx(6, _##name, __VA_ARGS__) | ^~~~~~~~~~~~~~~~~~~~~~ mm/filemap.c:4102:1: note: in expansion of macro 'COMPAT_SYSCALL_DEFINE6' 4102 | COMPAT_SYSCALL_DEFINE6(cachestat, unsigned int, fd, size_t, len, | ^~~~~~~~~~~~~~~~~~~~~~ include/linux/compat.h:820:17: note: previous declaration of 'compat_sys_cachestat' with type 'long int(int, size_t, u32, u32, struct cachestat *, unsigned int)' {aka 'long int(int, long unsigned int, unsigned int, unsigned int, struct cachestat *, unsigned int)'} 820 | asmlinkage long compat_sys_cachestat(int fd, size_t len, compat_arg_u64(off), | ^~~~~~~~~~~~~~~~~~~~ vim +75 include/linux/compat.h 217f4433fc2fe7 Heiko Carstens 2014-02-26 51 468366138850f2 Al Viro 2012-11-23 52 #define COMPAT_SYSCALL_DEFINE1(name, ...) \ 468366138850f2 Al Viro 2012-11-23 53 COMPAT_SYSCALL_DEFINEx(1, _##name, __VA_ARGS__) 468366138850f2 Al Viro 2012-11-23 54 #define COMPAT_SYSCALL_DEFINE2(name, ...) \ 468366138850f2 Al Viro 2012-11-23 55 COMPAT_SYSCALL_DEFINEx(2, _##name, __VA_ARGS__) 468366138850f2 Al Viro 2012-11-23 56 #define COMPAT_SYSCALL_DEFINE3(name, ...) \ 468366138850f2 Al Viro 2012-11-23 57 COMPAT_SYSCALL_DEFINEx(3, _##name, __VA_ARGS__) 468366138850f2 Al Viro 2012-11-23 58 #define COMPAT_SYSCALL_DEFINE4(name, ...) \ 468366138850f2 Al Viro 2012-11-23 59 COMPAT_SYSCALL_DEFINEx(4, _##name, __VA_ARGS__) 468366138850f2 Al Viro 2012-11-23 60 #define COMPAT_SYSCALL_DEFINE5(name, ...) \ 468366138850f2 Al Viro 2012-11-23 61 COMPAT_SYSCALL_DEFINEx(5, _##name, __VA_ARGS__) 468366138850f2 Al Viro 2012-11-23 62 #define COMPAT_SYSCALL_DEFINE6(name, ...) \ 468366138850f2 Al Viro 2012-11-23 63 COMPAT_SYSCALL_DEFINEx(6, _##name, __VA_ARGS__) 468366138850f2 Al Viro 2012-11-23 64 5ac9efa3c50d7c Dominik Brodowski 2018-04-09 65 /* 5ac9efa3c50d7c Dominik Brodowski 2018-04-09 66 * The asmlinkage stub is aliased to a function named __se_compat_sys_*() which 5ac9efa3c50d7c Dominik Brodowski 2018-04-09 67 * sign-extends 32-bit ints to longs whenever needed. The actual work is 5ac9efa3c50d7c Dominik Brodowski 2018-04-09 68 * done within __do_compat_sys_*(). 5ac9efa3c50d7c Dominik Brodowski 2018-04-09 69 */ 7303e30ec1d8fb Dominik Brodowski 2018-04-05 70 #ifndef COMPAT_SYSCALL_DEFINEx 468366138850f2 Al Viro 2012-11-23 71 #define COMPAT_SYSCALL_DEFINEx(x, name, ...) \ bee20031772af3 Arnd Bergmann 2018-06-19 72 __diag_push(); \ bee20031772af3 Arnd Bergmann 2018-06-19 73 __diag_ignore(GCC, 8, "-Wattribute-alias", \ bee20031772af3 Arnd Bergmann 2018-06-19 74 "Type aliasing is used to sanitize syscall arguments");\ 83460ec8dcac14 Andi Kleen 2013-11-12 @75 asmlinkage long compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \ 5ac9efa3c50d7c Dominik Brodowski 2018-04-09 76 __attribute__((alias(__stringify(__se_compat_sys##name)))); \ c9a211951c7c79 Howard McLauchlan 2018-03-21 77 ALLOW_ERROR_INJECTION(compat_sys##name, ERRNO); \ 5ac9efa3c50d7c Dominik Brodowski 2018-04-09 78 static inline long __do_compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__));\ 5ac9efa3c50d7c Dominik Brodowski 2018-04-09 79 asmlinkage long __se_compat_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)); \ 5ac9efa3c50d7c Dominik Brodowski 2018-04-09 80 asmlinkage long __se_compat_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \ 468366138850f2 Al Viro 2012-11-23 81 { \ bee20031772af3 Arnd Bergmann 2018-06-19 82 long ret = __do_compat_sys##name(__MAP(x,__SC_DELOUSE,__VA_ARGS__));\ bee20031772af3 Arnd Bergmann 2018-06-19 83 __MAP(x,__SC_TEST,__VA_ARGS__); \ bee20031772af3 Arnd Bergmann 2018-06-19 84 return ret; \ 468366138850f2 Al Viro 2012-11-23 85 } \ bee20031772af3 Arnd Bergmann 2018-06-19 86 __diag_pop(); \ 5ac9efa3c50d7c Dominik Brodowski 2018-04-09 87 static inline long __do_compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) 7303e30ec1d8fb Dominik Brodowski 2018-04-05 88 #endif /* COMPAT_SYSCALL_DEFINEx */ 468366138850f2 Al Viro 2012-11-23 89 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
