Hi Dapeng, kernel test robot noticed the following build warnings: [auto build test WARNING on next-20230808] [cannot apply to kvm/queue acme/perf/core tip/perf/core kvm/linux-next v6.5-rc5 v6.5-rc4 v6.5-rc3 linus/master v6.5-rc5] [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/Dapeng-Mi/KVM-x86-pmu-Support-PMU-fixed-counter-3/20230809-030457 base: next-20230808 patch link: https://lore.kernel.org/r/20230808063111.1870070-9-dapeng1.mi%40linux.intel.com patch subject: [PATCH RFV v2 08/13] perf/core: Add new function perf_event_topdown_metrics() config: arm-randconfig-r046-20230808 (https://download.01.org/0day-ci/archive/20230809/202308090418.vTakFy6e-lkp@xxxxxxxxx/config) compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project.git f28c006a5895fc0e329fe15fead81e37457cb1d1) reproduce: (https://download.01.org/0day-ci/archive/20230809/202308090418.vTakFy6e-lkp@xxxxxxxxx/reproduce) 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@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202308090418.vTakFy6e-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): In file included from kernel/sched/build_policy.c:34: In file included from kernel/sched/sched.h:61: In file included from include/linux/syscalls_api.h:1: In file included from include/linux/syscalls.h:90: In file included from include/trace/syscall.h:7: In file included from include/linux/trace_events.h:10: >> include/linux/perf_event.h:1793:18: warning: declaration of 'struct td_metrics' will not be visible outside of this function [-Wvisibility] struct td_metrics *value) ^ 1 warning generated. -- In file included from kernel/sched/fair.c:56: In file included from kernel/sched/sched.h:61: In file included from include/linux/syscalls_api.h:1: In file included from include/linux/syscalls.h:90: In file included from include/trace/syscall.h:7: In file included from include/linux/trace_events.h:10: >> include/linux/perf_event.h:1793:18: warning: declaration of 'struct td_metrics' will not be visible outside of this function [-Wvisibility] struct td_metrics *value) ^ kernel/sched/fair.c:702:6: warning: no previous prototype for function 'update_entity_lag' [-Wmissing-prototypes] void update_entity_lag(struct cfs_rq *cfs_rq, struct sched_entity *se) ^ kernel/sched/fair.c:702:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void update_entity_lag(struct cfs_rq *cfs_rq, struct sched_entity *se) ^ static kernel/sched/fair.c:12732:6: 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:12732:1: 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:12734:5: 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:12734:1: 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:12739:6: 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:12739:1: 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:12741:6: 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:12741:1: 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:503:20: 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:524:19: warning: unused function 'tg_is_idle' [-Wunused-function] static inline int tg_is_idle(struct task_group *tg) ^ kernel/sched/fair.c:548:19: warning: unused function 'max_vruntime' [-Wunused-function] static inline u64 max_vruntime(u64 max_vruntime, u64 vruntime) ^ kernel/sched/fair.c:1262:20: warning: unused function 'is_core_idle' [-Wunused-function] static inline bool is_core_idle(int cpu) ^ kernel/sched/fair.c:3452:20: 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:3456:20: 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:3460:20: 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:4872:20: 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:4887:20: warning: unused function 'remove_entity_load_avg' [-Wunused-function] static inline void remove_entity_load_avg(struct sched_entity *se) {} ^ kernel/sched/fair.c:6259:20: warning: unused function 'cfs_bandwidth_used' [-Wunused-function] static inline bool cfs_bandwidth_used(void) ^ kernel/sched/fair.c:6267:20: warning: unused function 'sync_throttle' [-Wunused-function] static inline void sync_throttle(struct task_group *tg, int cpu) {} ^ kernel/sched/fair.c:6280:19: warning: unused function 'throttled_lb_pair' [-Wunused-function] static inline int throttled_lb_pair(struct task_group *tg, ^ kernel/sched/fair.c:6291:37: warning: unused function 'tg_cfs_bandwidth' [-Wunused-function] static inline struct cfs_bandwidth *tg_cfs_bandwidth(struct task_group *tg) ^ kernel/sched/fair.c:6295:20: warning: unused function 'destroy_cfs_bandwidth' [-Wunused-function] static inline void destroy_cfs_bandwidth(struct cfs_bandwidth *cfs_b) {} ^ kernel/sched/fair.c:6296:20: warning: unused function 'update_runtime_enabled' [-Wunused-function] static inline void update_runtime_enabled(struct rq *rq) {} ^ kernel/sched/fair.c:6297:20: warning: unused function 'unthrottle_offline_cfs_rqs' [-Wunused-function] static inline void unthrottle_offline_cfs_rqs(struct rq *rq) {} ^ 22 warnings generated. -- In file included from kernel/sched/core.c:13: In file included from include/linux/syscalls_api.h:1: In file included from include/linux/syscalls.h:90: In file included from include/trace/syscall.h:7: In file included from include/linux/trace_events.h:10: >> include/linux/perf_event.h:1793:18: warning: declaration of 'struct td_metrics' will not be visible outside of this function [-Wvisibility] struct td_metrics *value) ^ kernel/sched/core.c:3695:20: warning: unused function 'rq_has_pinned_tasks' [-Wunused-function] static inline bool rq_has_pinned_tasks(struct rq *rq) ^ kernel/sched/core.c:5822:20: warning: unused function 'sched_tick_start' [-Wunused-function] static inline void sched_tick_start(int cpu) { } ^ kernel/sched/core.c:5823:20: warning: unused function 'sched_tick_stop' [-Wunused-function] static inline void sched_tick_stop(int cpu) { } ^ kernel/sched/core.c:6523:20: warning: unused function 'sched_core_cpu_starting' [-Wunused-function] static inline void sched_core_cpu_starting(unsigned int cpu) {} ^ kernel/sched/core.c:6524:20: warning: unused function 'sched_core_cpu_deactivate' [-Wunused-function] static inline void sched_core_cpu_deactivate(unsigned int cpu) {} ^ kernel/sched/core.c:6525:20: warning: unused function 'sched_core_cpu_dying' [-Wunused-function] static inline void sched_core_cpu_dying(unsigned int cpu) {} ^ 7 warnings generated. vim +1793 include/linux/perf_event.h 1791 1792 static inline int perf_event_topdown_metrics(struct perf_event *event, > 1793 struct td_metrics *value) 1794 { 1795 return 0; 1796 } 1797 #endif 1798 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
