tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 475ad739de0d59c667bb9fa8ab728d1d146c8e28 commit: 7d2bb3c7646cf1ebe76de965c3b31d7bc2b89845 [3450/3450] xsched: fix compile error when CONFIG_XCU_SCHEDULER is disabled config: loongarch-randconfig-002-20251203 (https://download.01.org/0day-ci/archive/20251203/202512031328.9eAOiuGN-lkp@i...) compiler: loongarch64-linux-gcc (GCC) 14.3.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251203/202512031328.9eAOiuGN-lkp@i...) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202512031328.9eAOiuGN-lkp@intel.com/ All errors (new ones prefixed by >>): In file included from kernel/xsched/vstream.c:21: include/linux/syscalls.h:954:54: warning: 'struct xsched_attr' declared inside parameter list will not be visible outside of this definition or declaration 954 | asmlinkage long sys_xsched_setattr(pid_t pid, struct xsched_attr __user *arg); | ^~~~~~~~~~~ include/linux/syscalls.h:955:54: warning: 'struct xsched_attr' declared inside parameter list will not be visible outside of this definition or declaration 955 | asmlinkage long sys_xsched_getattr(pid_t pid, struct xsched_attr __user *arg); | ^~~~~~~~~~~

...

include/linux/syscalls.h:246:25: error: conflicting types for 'sys_xsched_setattr'; have 'long int(pid_t, struct xsched_attr *)' {aka 'long int(int, struct xsched_attr *)'} 246 | asmlinkage long sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \ | ^~~ include/linux/syscalls.h:232:9: note: in expansion of macro '__SYSCALL_DEFINEx' 232 | __SYSCALL_DEFINEx(x, sname, __VA_ARGS__) | ^~~~~~~~~~~~~~~~~ include/linux/syscalls.h:222:36: note: in expansion of macro 'SYSCALL_DEFINEx' 222 | #define SYSCALL_DEFINE2(name, ...) SYSCALL_DEFINEx(2, _##name, __VA_ARGS__) | ^~~~~~~~~~~~~~~ kernel/xsched/vstream.c:660:1: note: in expansion of macro 'SYSCALL_DEFINE2' 660 | SYSCALL_DEFINE2(xsched_setattr, pid_t, pid, struct xsched_attr __user *, arg) | ^~~~~~~~~~~~~~~ include/linux/syscalls.h:954:17: note: previous declaration of 'sys_xsched_setattr' with type 'long int(pid_t, struct xsched_attr *)' {aka 'long int(int, struct xsched_attr *)'} 954 | asmlinkage long sys_xsched_setattr(pid_t pid, struct xsched_attr __user *arg); | ^~~~~~~~~~~~~~~~~~ include/linux/syscalls.h:246:25: error: conflicting types for 'sys_xsched_getattr'; have 'long int(pid_t, struct xsched_attr *)' {aka 'long int(int, struct xsched_attr *)'} 246 | asmlinkage long sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \ | ^~~ include/linux/syscalls.h:232:9: note: in expansion of macro '__SYSCALL_DEFINEx' 232 | __SYSCALL_DEFINEx(x, sname, __VA_ARGS__) | ^~~~~~~~~~~~~~~~~ include/linux/syscalls.h:222:36: note: in expansion of macro 'SYSCALL_DEFINEx' 222 | #define SYSCALL_DEFINE2(name, ...) SYSCALL_DEFINEx(2, _##name, __VA_ARGS__) | ^~~~~~~~~~~~~~~ kernel/xsched/vstream.c:665:1: note: in expansion of macro 'SYSCALL_DEFINE2' 665 | SYSCALL_DEFINE2(xsched_getattr, pid_t, pid, struct xsched_attr __user *, arg) | ^~~~~~~~~~~~~~~ include/linux/syscalls.h:955:17: note: previous declaration of 'sys_xsched_getattr' with type 'long int(pid_t, struct xsched_attr *)' {aka 'long int(int, struct xsched_attr *)'} 955 | asmlinkage long sys_xsched_getattr(pid_t pid, struct xsched_attr __user *arg); | ^~~~~~~~~~~~~~~~~~

vim +246 include/linux/syscalls.h 1bd21c6c21e848 Dominik Brodowski 2018-04-05 235 e145242ea0df6b Dominik Brodowski 2018-04-09 236 /* e145242ea0df6b Dominik Brodowski 2018-04-09 237 * The asmlinkage stub is aliased to a function named __se_sys_*() which e145242ea0df6b Dominik Brodowski 2018-04-09 238 * sign-extends 32-bit ints to longs whenever needed. The actual work is e145242ea0df6b Dominik Brodowski 2018-04-09 239 * done within __do_sys_*(). e145242ea0df6b Dominik Brodowski 2018-04-09 240 */ 1bd21c6c21e848 Dominik Brodowski 2018-04-05 241 #ifndef __SYSCALL_DEFINEx bed1ffca022cc8 Frederic Weisbecker 2009-03-13 242 #define __SYSCALL_DEFINEx(x, name, ...) \ bee20031772af3 Arnd Bergmann 2018-06-19 243 __diag_push(); \ bee20031772af3 Arnd Bergmann 2018-06-19 244 __diag_ignore(GCC, 8, "-Wattribute-alias", \ bee20031772af3 Arnd Bergmann 2018-06-19 245 "Type aliasing is used to sanitize syscall arguments");\ 83460ec8dcac14 Andi Kleen 2013-11-12 @246 asmlinkage long sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \ e145242ea0df6b Dominik Brodowski 2018-04-09 247 __attribute__((alias(__stringify(__se_sys##name)))); \ c9a211951c7c79 Howard McLauchlan 2018-03-21 248 ALLOW_ERROR_INJECTION(sys##name, ERRNO); \ e145242ea0df6b Dominik Brodowski 2018-04-09 249 static inline long __do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__));\ e145242ea0df6b Dominik Brodowski 2018-04-09 250 asmlinkage long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)); \ e145242ea0df6b Dominik Brodowski 2018-04-09 251 asmlinkage long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \ 1a94bc34768e46 Heiko Carstens 2009-01-14 252 { \ e145242ea0df6b Dominik Brodowski 2018-04-09 253 long ret = __do_sys##name(__MAP(x,__SC_CAST,__VA_ARGS__));\ 07fe6e00f6cca6 Al Viro 2013-01-21 254 __MAP(x,__SC_TEST,__VA_ARGS__); \ 2cf0966683430b Al Viro 2013-01-21 255 __PROTECT(x, ret,__MAP(x,__SC_ARGS,__VA_ARGS__)); \ 2cf0966683430b Al Viro 2013-01-21 256 return ret; \ 1a94bc34768e46 Heiko Carstens 2009-01-14 257 } \ bee20031772af3 Arnd Bergmann 2018-06-19 258 __diag_pop(); \ e145242ea0df6b Dominik Brodowski 2018-04-09 259 static inline long __do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) 1bd21c6c21e848 Dominik Brodowski 2018-04-05 260 #endif /* __SYSCALL_DEFINEx */ 1a94bc34768e46 Heiko Carstens 2009-01-14 261 :::::: The code at line 246 was first introduced by commit :::::: 83460ec8dcac14142e7860a01fa59c267ac4657c syscalls.h: use gcc alias instead of assembler aliases for syscalls :::::: TO: Andi Kleen <ak@linux.intel.com> :::::: CC: Linus Torvalds <torvalds@linux-foundation.org> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki