Hi Helge, I love your patch! Perhaps something to improve: [auto build test WARNING on tip/x86/mm] [also build test WARNING on linus/master] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Helge-Deller/Dump-command-line-of-faulting-process-to-syslog/20220801-232209 base: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git 8f1d56f64f8d6b80dea2d1978d10071132a695c5 config: hexagon-randconfig-r005-20220801 (https://download.01.org/0day-ci/archive/20220807/202208072219.zrLROtui-lkp@xxxxxxxxx/config) compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 52cd00cabf479aa7eb6dbb063b7ba41ea57bce9e) 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/82149c3c87cadf0a362c3015753f97c7582f31e4 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Helge-Deller/Dump-command-line-of-faulting-process-to-syslog/20220801-232209 git checkout 82149c3c87cadf0a362c3015753f97c7582f31e4 # 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=hexagon SHELL=/bin/bash kernel/sched/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): In file included from kernel/sched/core.c:84: In file included from kernel/sched/sched.h:50: >> include/linux/proc_fs.h:222:64: warning: omitting the parameter name in a function definition is a C2x extension [-Wc2x-extensions] static inline void get_task_cmdline_kernel(struct task_struct *, char *, size_t) { } ^ include/linux/proc_fs.h:222:72: warning: omitting the parameter name in a function definition is a C2x extension [-Wc2x-extensions] static inline void get_task_cmdline_kernel(struct task_struct *, char *, size_t) { } ^ include/linux/proc_fs.h:222:80: warning: omitting the parameter name in a function definition is a C2x extension [-Wc2x-extensions] static inline void get_task_cmdline_kernel(struct task_struct *, char *, size_t) { } ^ kernel/sched/core.c:3577:20: warning: unused function 'rq_has_pinned_tasks' [-Wunused-function] static inline bool rq_has_pinned_tasks(struct rq *rq) ^ kernel/sched/core.c:5505:20: warning: unused function 'sched_tick_start' [-Wunused-function] static inline void sched_tick_start(int cpu) { } ^ kernel/sched/core.c:5506:20: warning: unused function 'sched_tick_stop' [-Wunused-function] static inline void sched_tick_stop(int cpu) { } ^ kernel/sched/core.c:6200:20: warning: unused function 'sched_core_cpu_starting' [-Wunused-function] static inline void sched_core_cpu_starting(unsigned int cpu) {} ^ kernel/sched/core.c:6201:20: warning: unused function 'sched_core_cpu_deactivate' [-Wunused-function] static inline void sched_core_cpu_deactivate(unsigned int cpu) {} ^ kernel/sched/core.c:6202:20: warning: unused function 'sched_core_cpu_dying' [-Wunused-function] static inline void sched_core_cpu_dying(unsigned int cpu) {} ^ 9 warnings generated. -- In file included from kernel/sched/fair.c:54: In file included from kernel/sched/sched.h:50: >> include/linux/proc_fs.h:222:64: warning: omitting the parameter name in a function definition is a C2x extension [-Wc2x-extensions] static inline void get_task_cmdline_kernel(struct task_struct *, char *, size_t) { } ^ include/linux/proc_fs.h:222:72: warning: omitting the parameter name in a function definition is a C2x extension [-Wc2x-extensions] static inline void get_task_cmdline_kernel(struct task_struct *, char *, size_t) { } ^ include/linux/proc_fs.h:222:80: warning: omitting the parameter name in a function definition is a C2x extension [-Wc2x-extensions] static inline void get_task_cmdline_kernel(struct task_struct *, char *, size_t) { } ^ kernel/sched/fair.c:5512:6: warning: no previous prototype for function 'init_cfs_bandwidth' [-Wmissing-prototypes] void init_cfs_bandwidth(struct cfs_bandwidth *cfs_b) {} ^ kernel/sched/fair.c:5512:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void init_cfs_bandwidth(struct cfs_bandwidth *cfs_b) {} ^ static kernel/sched/fair.c:11697:6: warning: no previous prototype for function 'free_fair_sched_group' [-Wmissing-prototypes] void free_fair_sched_group(struct task_group *tg) { } ^ kernel/sched/fair.c:11697:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void free_fair_sched_group(struct task_group *tg) { } ^ static kernel/sched/fair.c:11699:5: warning: no previous prototype for function 'alloc_fair_sched_group' [-Wmissing-prototypes] int alloc_fair_sched_group(struct task_group *tg, struct task_group *parent) ^ kernel/sched/fair.c:11699:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int alloc_fair_sched_group(struct task_group *tg, struct task_group *parent) ^ static kernel/sched/fair.c:11704:6: warning: no previous prototype for function 'online_fair_sched_group' [-Wmissing-prototypes] void online_fair_sched_group(struct task_group *tg) { } ^ kernel/sched/fair.c:11704:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void online_fair_sched_group(struct task_group *tg) { } ^ static kernel/sched/fair.c:11706:6: warning: no previous prototype for function 'unregister_fair_sched_group' [-Wmissing-prototypes] void unregister_fair_sched_group(struct task_group *tg) { } ^ kernel/sched/fair.c:11706:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void unregister_fair_sched_group(struct task_group *tg) { } ^ static kernel/sched/fair.c:489:20: warning: unused function 'list_del_leaf_cfs_rq' [-Wunused-function] static inline void list_del_leaf_cfs_rq(struct cfs_rq *cfs_rq) ^ kernel/sched/fair.c:510:19: warning: unused function 'tg_is_idle' [-Wunused-function] static inline int tg_is_idle(struct task_group *tg) ^ kernel/sched/fair.c:2961:20: warning: unused function 'account_numa_enqueue' [-Wunused-function] static inline void account_numa_enqueue(struct rq *rq, struct task_struct *p) ^ kernel/sched/fair.c:2965:20: warning: unused function 'account_numa_dequeue' [-Wunused-function] static inline void account_numa_dequeue(struct rq *rq, struct task_struct *p) ^ kernel/sched/fair.c:2969:20: warning: unused function 'update_scan_period' [-Wunused-function] static inline void update_scan_period(struct task_struct *p, int new_cpu) ^ kernel/sched/fair.c:4171:20: warning: unused function 'cfs_rq_is_decayed' [-Wunused-function] static inline bool cfs_rq_is_decayed(struct cfs_rq *cfs_rq) ^ kernel/sched/fair.c:4185:20: warning: unused function 'remove_entity_load_avg' [-Wunused-function] static inline void remove_entity_load_avg(struct sched_entity *se) {} ^ kernel/sched/fair.c:5493:20: warning: unused function 'sync_throttle' [-Wunused-function] static inline void sync_throttle(struct task_group *tg, int cpu) {} ^ kernel/sched/fair.c:5506:19: warning: unused function 'throttled_lb_pair' [-Wunused-function] static inline int throttled_lb_pair(struct task_group *tg, ^ kernel/sched/fair.c:5518:37: warning: unused function 'tg_cfs_bandwidth' [-Wunused-function] static inline struct cfs_bandwidth *tg_cfs_bandwidth(struct task_group *tg) ^ kernel/sched/fair.c:5522:20: warning: unused function 'destroy_cfs_bandwidth' [-Wunused-function] static inline void destroy_cfs_bandwidth(struct cfs_bandwidth *cfs_b) {} ^ kernel/sched/fair.c:5523:20: warning: unused function 'update_runtime_enabled' [-Wunused-function] static inline void update_runtime_enabled(struct rq *rq) {} ^ kernel/sched/fair.c:5524:20: warning: unused function 'unthrottle_offline_cfs_rqs' [-Wunused-function] static inline void unthrottle_offline_cfs_rqs(struct rq *rq) {} ^ 21 warnings generated. -- In file included from kernel/sched/build_policy.c:34: In file included from kernel/sched/sched.h:50: >> include/linux/proc_fs.h:222:64: warning: omitting the parameter name in a function definition is a C2x extension [-Wc2x-extensions] static inline void get_task_cmdline_kernel(struct task_struct *, char *, size_t) { } ^ include/linux/proc_fs.h:222:72: warning: omitting the parameter name in a function definition is a C2x extension [-Wc2x-extensions] static inline void get_task_cmdline_kernel(struct task_struct *, char *, size_t) { } ^ include/linux/proc_fs.h:222:80: warning: omitting the parameter name in a function definition is a C2x extension [-Wc2x-extensions] static inline void get_task_cmdline_kernel(struct task_struct *, char *, size_t) { } ^ In file included from kernel/sched/build_policy.c:45: kernel/sched/rt.c:259:6: warning: no previous prototype for function 'unregister_rt_sched_group' [-Wmissing-prototypes] void unregister_rt_sched_group(struct task_group *tg) { } ^ kernel/sched/rt.c:259:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void unregister_rt_sched_group(struct task_group *tg) { } ^ static kernel/sched/rt.c:261:6: warning: no previous prototype for function 'free_rt_sched_group' [-Wmissing-prototypes] void free_rt_sched_group(struct task_group *tg) { } ^ kernel/sched/rt.c:261:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void free_rt_sched_group(struct task_group *tg) { } ^ static kernel/sched/rt.c:263:5: warning: no previous prototype for function 'alloc_rt_sched_group' [-Wmissing-prototypes] int alloc_rt_sched_group(struct task_group *tg, struct task_group *parent) ^ kernel/sched/rt.c:263:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int alloc_rt_sched_group(struct task_group *tg, struct task_group *parent) ^ static 6 warnings generated. -- In file included from kernel/sched/build_utility.c:35: >> include/linux/proc_fs.h:222:64: warning: omitting the parameter name in a function definition is a C2x extension [-Wc2x-extensions] static inline void get_task_cmdline_kernel(struct task_struct *, char *, size_t) { } ^ include/linux/proc_fs.h:222:72: warning: omitting the parameter name in a function definition is a C2x extension [-Wc2x-extensions] static inline void get_task_cmdline_kernel(struct task_struct *, char *, size_t) { } ^ include/linux/proc_fs.h:222:80: warning: omitting the parameter name in a function definition is a C2x extension [-Wc2x-extensions] static inline void get_task_cmdline_kernel(struct task_struct *, char *, size_t) { } ^ 3 warnings generated. vim +222 include/linux/proc_fs.h 221 > 222 static inline void get_task_cmdline_kernel(struct task_struct *, char *, size_t) { } 223 -- 0-DAY CI Kernel Test Service https://01.org/lkp
