[kbuild-all] [mcgrof-next:20211116-sysctl-cleanups-v3 18/20] include/linux/sysctl.h:227:30: error: 'register_sysctl_mount_point' defined but not used

tree: https://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux-next.git 20211116-sysctl-cleanups-v3 head: 06113f1d9a2d0669964adfa2e0128bd50e56b621 commit: 39ba9159476b6d86288f95f4cb62ad7055680395 [18/20] sysctl: add helper to register a sysctl mount point config: sparc-randconfig-r004-20211116 (attached as .config) compiler: sparc-linux-gcc (GCC) 11.2.0 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://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux-next.git/com... git remote add mcgrof-next https://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux-next.git git fetch --no-tags mcgrof-next 20211116-sysctl-cleanups-v3 git checkout 39ba9159476b6d86288f95f4cb62ad7055680395 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=sparc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): In file included from include/linux/key.h:17, from include/linux/cred.h:13, from include/linux/sched/signal.h:10, from include/linux/rcuwait.h:6, from include/linux/percpu-rwsem.h:7, from include/linux/fs.h:33, from include/linux/proc_fs.h:10, from arch/sparc/include/asm/prom.h:18, from include/linux/of.h:250, from arch/sparc/include/asm/openprom.h:15, from arch/sparc/include/asm/kdebug_32.h:11, from arch/sparc/include/asm/kdebug.h:7, from include/linux/kdebug.h:5, from arch/sparc/kernel/traps_32.c:19: include/linux/sysctl.h: In function 'register_sysctl_mount_point': include/linux/sysctl.h:230:1: error: expected ';' before '}' token 230 | } | ^ arch/sparc/kernel/traps_32.c: At top level: arch/sparc/kernel/traps_32.c:368:6: error: no previous prototype for 'trap_init' [-Werror=missing-prototypes] 368 | void trap_init(void) | ^~~~~~~~~ In file included from include/linux/key.h:17, from include/linux/cred.h:13, from include/linux/sched/signal.h:10, from include/linux/rcuwait.h:6, from include/linux/percpu-rwsem.h:7, from include/linux/fs.h:33, from include/linux/proc_fs.h:10, from arch/sparc/include/asm/prom.h:18, from include/linux/of.h:250, from arch/sparc/include/asm/openprom.h:15, from arch/sparc/include/asm/kdebug_32.h:11, from arch/sparc/include/asm/kdebug.h:7, from include/linux/kdebug.h:5, from arch/sparc/kernel/traps_32.c:19: 227 | static struct sysctl_header *register_sysctl_mount_point(const char *path) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors -- In file included from include/linux/key.h:17, from include/linux/cred.h:13, from include/linux/sched/signal.h:10, from include/linux/rcuwait.h:6, from include/linux/percpu-rwsem.h:7, from include/linux/fs.h:33, from include/linux/seq_file.h:12, from arch/sparc/kernel/irq_32.c:16: include/linux/sysctl.h: In function 'register_sysctl_mount_point': include/linux/sysctl.h:230:1: error: expected ';' before '}' token 230 | } | ^ At top level: 227 | static struct sysctl_header *register_sysctl_mount_point(const char *path) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors -- In file included from include/linux/key.h:17, from include/linux/cred.h:13, from include/linux/sched/signal.h:10, from include/linux/rcuwait.h:6, from include/linux/percpu-rwsem.h:7, from include/linux/fs.h:33, from include/linux/proc_fs.h:10, from arch/sparc/include/asm/prom.h:18, from include/linux/of.h:250, from arch/sparc/include/asm/openprom.h:15, from arch/sparc/include/asm/oplib_32.h:12, from arch/sparc/include/asm/oplib.h:7, from arch/sparc/include/asm/pgtable_32.h:32, from arch/sparc/include/asm/pgtable.h:7, from include/linux/pgtable.h:6, from include/linux/mm.h:33, from arch/sparc/kernel/smp_32.c:19: include/linux/sysctl.h: In function 'register_sysctl_mount_point': include/linux/sysctl.h:230:1: error: expected ';' before '}' token 230 | } | ^ arch/sparc/kernel/smp_32.c: At top level: arch/sparc/kernel/smp_32.c:177:5: error: no previous prototype for 'setup_profiling_timer' [-Werror=missing-prototypes] 177 | int setup_profiling_timer(unsigned int multiplier) | ^~~~~~~~~~~~~~~~~~~~~ In file included from include/linux/key.h:17, from include/linux/cred.h:13, from include/linux/sched/signal.h:10, from include/linux/rcuwait.h:6, from include/linux/percpu-rwsem.h:7, from include/linux/fs.h:33, from include/linux/proc_fs.h:10, from arch/sparc/include/asm/prom.h:18, from include/linux/of.h:250, from arch/sparc/include/asm/openprom.h:15, from arch/sparc/include/asm/oplib_32.h:12, from arch/sparc/include/asm/oplib.h:7, from arch/sparc/include/asm/pgtable_32.h:32, from arch/sparc/include/asm/pgtable.h:7, from include/linux/pgtable.h:6, from include/linux/mm.h:33, from arch/sparc/kernel/smp_32.c:19: 227 | static struct sysctl_header *register_sysctl_mount_point(const char *path) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors -- In file included from include/linux/umh.h:9, from include/linux/kmod.h:9, from include/linux/module.h:17, from include/linux/moduleloader.h:6, from arch/sparc/kernel/module.c:8: include/linux/sysctl.h: In function 'register_sysctl_mount_point': include/linux/sysctl.h:230:1: error: expected ';' before '}' token 230 | } | ^ arch/sparc/kernel/module.c: In function 'module_frob_arch_sections': arch/sparc/kernel/module.c:62:15: error: variable 'strtab' set but not used [-Werror=unused-but-set-variable] 62 | char *strtab; | ^~~~~~ In file included from include/linux/umh.h:9, from include/linux/kmod.h:9, from include/linux/module.h:17, from include/linux/moduleloader.h:6, from arch/sparc/kernel/module.c:8: At top level: 227 | static struct sysctl_header *register_sysctl_mount_point(const char *path) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors -- In file included from include/linux/key.h:17, from include/linux/cred.h:13, from include/linux/sched/signal.h:10, from include/linux/rcuwait.h:6, from include/linux/percpu-rwsem.h:7, from include/linux/fs.h:33, from include/linux/seq_file.h:12, from arch/sparc/mm/srmmu.c:12: include/linux/sysctl.h: In function 'register_sysctl_mount_point': include/linux/sysctl.h:230:1: error: expected ';' before '}' token 230 | } | ^ arch/sparc/mm/srmmu.c: In function 'poke_hypersparc': arch/sparc/mm/srmmu.c:1081:32: error: variable 'clear' set but not used [-Werror=unused-but-set-variable] 1081 | volatile unsigned long clear; | ^~~~~ arch/sparc/mm/srmmu.c: In function 'smp_flush_page_for_dma': arch/sparc/mm/srmmu.c:1639:13: error: cast between incompatible function types from 'void (*)(long unsigned int)' to 'void (*)(long unsigned int, long unsigned int, long unsigned int, long unsigned int, long unsigned int)' [-Werror=cast-function-type] 1639 | xc1((smpfunc_t) local_ops->page_for_dma, page); | ^ arch/sparc/mm/srmmu.c: In function 'smp_flush_cache_mm': arch/sparc/mm/srmmu.c:1662:29: error: cast between incompatible function types from 'void (*)(struct mm_struct *)' to 'void (*)(long unsigned int, long unsigned int, long unsigned int, long unsigned int, long unsigned int)' [-Werror=cast-function-type] 1662 | xc1((smpfunc_t) local_ops->cache_mm, (unsigned long) mm); | ^ arch/sparc/mm/srmmu.c: In function 'smp_flush_tlb_mm': arch/sparc/mm/srmmu.c:1674:29: error: cast between incompatible function types from 'void (*)(struct mm_struct *)' to 'void (*)(long unsigned int, long unsigned int, long unsigned int, long unsigned int, long unsigned int)' [-Werror=cast-function-type] 1674 | xc1((smpfunc_t) local_ops->tlb_mm, (unsigned long) mm); | ^ arch/sparc/mm/srmmu.c: In function 'smp_flush_cache_range': arch/sparc/mm/srmmu.c:1694:29: error: cast between incompatible function types from 'void (*)(struct vm_area_struct *, long unsigned int, long unsigned int)' to 'void (*)(long unsigned int, long unsigned int, long unsigned int, long unsigned int, long unsigned int)' [-Werror=cast-function-type] 1694 | xc3((smpfunc_t) local_ops->cache_range, | ^ arch/sparc/mm/srmmu.c: In function 'smp_flush_tlb_range': arch/sparc/mm/srmmu.c:1711:29: error: cast between incompatible function types from 'void (*)(struct vm_area_struct *, long unsigned int, long unsigned int)' to 'void (*)(long unsigned int, long unsigned int, long unsigned int, long unsigned int, long unsigned int)' [-Werror=cast-function-type] 1711 | xc3((smpfunc_t) local_ops->tlb_range, | ^ arch/sparc/mm/srmmu.c: In function 'smp_flush_cache_page': arch/sparc/mm/srmmu.c:1726:29: error: cast between incompatible function types from 'void (*)(struct vm_area_struct *, long unsigned int)' to 'void (*)(long unsigned int, long unsigned int, long unsigned int, long unsigned int, long unsigned int)' [-Werror=cast-function-type] 1726 | xc2((smpfunc_t) local_ops->cache_page, | ^ arch/sparc/mm/srmmu.c: In function 'smp_flush_tlb_page': arch/sparc/mm/srmmu.c:1741:29: error: cast between incompatible function types from 'void (*)(struct vm_area_struct *, long unsigned int)' to 'void (*)(long unsigned int, long unsigned int, long unsigned int, long unsigned int, long unsigned int)' [-Werror=cast-function-type] 1741 | xc2((smpfunc_t) local_ops->tlb_page, | ^ arch/sparc/mm/srmmu.c: In function 'smp_flush_page_to_ram': arch/sparc/mm/srmmu.c:1756:13: error: cast between incompatible function types from 'void (*)(long unsigned int)' to 'void (*)(long unsigned int, long unsigned int, long unsigned int, long unsigned int, long unsigned int)' [-Werror=cast-function-type] 1756 | xc1((smpfunc_t) local_ops->page_to_ram, page); | ^ arch/sparc/mm/srmmu.c: In function 'smp_flush_sig_insns': arch/sparc/mm/srmmu.c:1767:21: error: cast between incompatible function types from 'void (*)(struct mm_struct *, long unsigned int)' to 'void (*)(long unsigned int, long unsigned int, long unsigned int, long unsigned int, long unsigned int)' [-Werror=cast-function-type] 1767 | xc2((smpfunc_t) local_ops->sig_insns, | ^ In file included from include/linux/key.h:17, from include/linux/cred.h:13, from include/linux/sched/signal.h:10, from include/linux/rcuwait.h:6, from include/linux/percpu-rwsem.h:7, from include/linux/fs.h:33, from include/linux/seq_file.h:12, from arch/sparc/mm/srmmu.c:12: At top level: 227 | static struct sysctl_header *register_sysctl_mount_point(const char *path) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors -- In file included from include/linux/key.h:17, from include/linux/cred.h:13, from include/linux/sched/signal.h:10, from include/linux/rcuwait.h:6, from include/linux/percpu-rwsem.h:7, from include/linux/fs.h:33, from include/linux/proc_fs.h:10, from arch/sparc/include/asm/prom.h:18, from include/linux/of.h:250, from arch/sparc/include/asm/openprom.h:15, from arch/sparc/include/asm/oplib_32.h:12, from arch/sparc/include/asm/oplib.h:7, from arch/sparc/include/asm/pgtable_32.h:32, from arch/sparc/include/asm/pgtable.h:7, from include/linux/pgtable.h:6, from include/linux/mm.h:33, from arch/sparc/mm/leon_mm.c:14: include/linux/sysctl.h: In function 'register_sysctl_mount_point': include/linux/sysctl.h:230:1: error: expected ';' before '}' token 230 | } | ^ arch/sparc/mm/leon_mm.c: In function 'leon_swprobe': arch/sparc/mm/leon_mm.c:42:32: error: variable 'paddrbase' set but not used [-Werror=unused-but-set-variable] 42 | unsigned int lvl, pte, paddrbase; | ^~~~~~~~~ In file included from include/linux/key.h:17, from include/linux/cred.h:13, from include/linux/sched/signal.h:10, from include/linux/rcuwait.h:6, from include/linux/percpu-rwsem.h:7, from include/linux/fs.h:33, from include/linux/proc_fs.h:10, from arch/sparc/include/asm/prom.h:18, from include/linux/of.h:250, from arch/sparc/include/asm/openprom.h:15, from arch/sparc/include/asm/oplib_32.h:12, from arch/sparc/include/asm/oplib.h:7, from arch/sparc/include/asm/pgtable_32.h:32, from arch/sparc/include/asm/pgtable.h:7, from include/linux/pgtable.h:6, from include/linux/mm.h:33, from arch/sparc/mm/leon_mm.c:14: At top level: 227 | static struct sysctl_header *register_sysctl_mount_point(const char *path) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors -- In file included from include/linux/umh.h:9, from include/linux/kmod.h:9, from include/linux/module.h:17, from arch/sparc/lib/cmpdi2.c:2: include/linux/sysctl.h: In function 'register_sysctl_mount_point': include/linux/sysctl.h:230:1: error: expected ';' before '}' token 230 | } | ^ arch/sparc/lib/cmpdi2.c: At top level: arch/sparc/lib/cmpdi2.c:6:11: error: no previous prototype for '__cmpdi2' [-Werror=missing-prototypes] 6 | word_type __cmpdi2(long long a, long long b) | ^~~~~~~~ In file included from include/linux/umh.h:9, from include/linux/kmod.h:9, from include/linux/module.h:17, from arch/sparc/lib/cmpdi2.c:2: 227 | static struct sysctl_header *register_sysctl_mount_point(const char *path) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors -- In file included from include/linux/umh.h:9, from include/linux/kmod.h:9, from include/linux/module.h:17, from arch/sparc/lib/ucmpdi2.c:2: include/linux/sysctl.h: In function 'register_sysctl_mount_point': include/linux/sysctl.h:230:1: error: expected ';' before '}' token 230 | } | ^ arch/sparc/lib/ucmpdi2.c: At top level: arch/sparc/lib/ucmpdi2.c:5:11: error: no previous prototype for '__ucmpdi2' [-Werror=missing-prototypes] 5 | word_type __ucmpdi2(unsigned long long a, unsigned long long b) | ^~~~~~~~~ In file included from include/linux/umh.h:9, from include/linux/kmod.h:9, from include/linux/module.h:17, from arch/sparc/lib/ucmpdi2.c:2: 227 | static struct sysctl_header *register_sysctl_mount_point(const char *path) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors vim +/register_sysctl_mount_point +227 include/linux/sysctl.h 226 228 { 229 return NULL 230 } 231 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org