[kbuild-all] [zen:5.15/prjc 1/237] kernel/sched/alt_core.c:652:6: error: no previous prototype for 'resched_curr'

tree: https://github.com/zen-kernel/zen-kernel 5.15/prjc head: 09b9774798f91c4747ee3266e910eb8aebf2118c commit: cb06db4ef97b1e99a0350d328e6044f374941410 [1/237] Project C v5.7.5-r2 config: arc-allyesconfig (attached as .config) compiler: arceb-elf-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://github.com/zen-kernel/zen-kernel/commit/cb06db4ef97b1e99a0350d328... git remote add zen https://github.com/zen-kernel/zen-kernel git fetch --no-tags zen 5.15/prjc git checkout cb06db4ef97b1e99a0350d328e6044f374941410 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=arc 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 kernel/sched/alt_core.c:191: kernel/sched/alt_core.c: In function 'dequeue_task': kernel/sched/bmq_imp.h:52:9: error: implicit declaration of function 'sched_info_dequeued'; did you mean 'sched_info_dequeue'? [-Werror=implicit-function-declaration] 52 | sched_info_dequeued(rq, p); \ | ^~~~~~~~~~~~~~~~~~~ kernel/sched/alt_core.c:444:9: note: in expansion of macro '__SCHED_DEQUEUE_TASK' 444 | __SCHED_DEQUEUE_TASK(p, rq, flags, update_sched_rq_watermark(rq)); | ^~~~~~~~~~~~~~~~~~~~ kernel/sched/alt_core.c: In function 'enqueue_task': kernel/sched/bmq_imp.h:61:9: error: implicit declaration of function 'sched_info_queued'; did you mean 'sched_info_enqueue'? [-Werror=implicit-function-declaration] 61 | sched_info_queued(rq, p); \ | ^~~~~~~~~~~~~~~~~ kernel/sched/alt_core.c:461:9: note: in expansion of macro '__SCHED_ENQUEUE_TASK' 461 | __SCHED_ENQUEUE_TASK(p, rq, flags); | ^~~~~~~~~~~~~~~~~~~~ kernel/sched/alt_core.c: At top level: 652 | void resched_curr(struct rq *rq) | ^~~~~~~~~~~~ 675 | void resched_cpu(int cpu) | ^~~~~~~~~~~ 692 | void select_nohz_load_balancer(int stop_tick) | ^~~~~~~~~~~~~~~~~~~~~~~~~ 696 | void set_cpu_sd_state_idle(void) {} | ^~~~~~~~~~~~~~~~~~~~~ kernel/sched/alt_core.c: In function 'activate_task': kernel/sched/alt_core.c:955:13: error: implicit declaration of function 'task_contributes_to_load' [-Werror=implicit-function-declaration] 955 | if (task_contributes_to_load(p)) | ^~~~~~~~~~~~~~~~~~~~~~~~ In file included from include/linux/printk.h:11, from include/linux/kernel.h:19, from include/linux/list.h:9, from include/linux/rculist.h:10, from include/linux/pid.h:5, from include/linux/sched.h:14, from kernel/sched/alt_sched.h:4, from kernel/sched/sched.h:6, from kernel/sched/alt_core.c:14: kernel/sched/alt_core.c: In function 'set_task_cpu': kernel/sched/alt_core.c:1002:25: error: 'struct task_struct' has no member named 'state'; did you mean '__state'? 1002 | WARN_ON_ONCE(p->state != TASK_RUNNING && p->state != TASK_WAKING && | ^~~~~ include/linux/once_lite.h:15:41: note: in definition of macro 'DO_ONCE_LITE_IF' 15 | bool __ret_do_once = !!(condition); \ | ^~~~~~~~~ kernel/sched/alt_core.c:1002:9: note: in expansion of macro 'WARN_ON_ONCE' 1002 | WARN_ON_ONCE(p->state != TASK_RUNNING && p->state != TASK_WAKING && | ^~~~~~~~~~~~ kernel/sched/alt_core.c:1002:53: error: 'struct task_struct' has no member named 'state'; did you mean '__state'? 1002 | WARN_ON_ONCE(p->state != TASK_RUNNING && p->state != TASK_WAKING && | ^~~~~ include/linux/once_lite.h:15:41: note: in definition of macro 'DO_ONCE_LITE_IF' 15 | bool __ret_do_once = !!(condition); \ | ^~~~~~~~~ kernel/sched/alt_core.c:1002:9: note: in expansion of macro 'WARN_ON_ONCE' 1002 | WARN_ON_ONCE(p->state != TASK_RUNNING && p->state != TASK_WAKING && | ^~~~~~~~~~~~ kernel/sched/alt_core.c: At top level: kernel/sched/alt_core.c:1188:15: error: conflicting types for 'wait_task_inactive'; have 'long unsigned int(struct task_struct *, long int)' 1188 | unsigned long wait_task_inactive(struct task_struct *p, long match_state) | ^~~~~~~~~~~~~~~~~~ In file included from kernel/sched/alt_sched.h:4, from kernel/sched/sched.h:6, from kernel/sched/alt_core.c:14: include/linux/sched.h:1977:22: note: previous declaration of 'wait_task_inactive' with type 'long unsigned int(struct task_struct *, unsigned int)' 1977 | extern unsigned long wait_task_inactive(struct task_struct *, unsigned int match_state); | ^~~~~~~~~~~~~~~~~~ In file included from include/linux/kernel.h:11, from include/linux/list.h:9, from include/linux/rculist.h:10, from include/linux/pid.h:5, from include/linux/sched.h:14, from kernel/sched/alt_sched.h:4, from kernel/sched/sched.h:6, from kernel/sched/alt_core.c:14: kernel/sched/alt_core.c: In function 'wait_task_inactive': kernel/sched/alt_core.c:1211:56: error: 'struct task_struct' has no member named 'state'; did you mean '__state'? 1211 | if (match_state && unlikely(p->state != match_state)) | ^~~~~ include/linux/compiler.h:78:45: note: in definition of macro 'unlikely' 78 | # define unlikely(x) __builtin_expect(!!(x), 0) | ^ kernel/sched/alt_core.c:1226:40: error: 'struct task_struct' has no member named 'state'; did you mean '__state'? 1226 | if (!match_state || p->state == match_state) | ^~~~~ | __state kernel/sched/alt_core.c: At top level: 1409 | void sched_set_stop_task(int cpu, struct task_struct *stop) | ^~~~~~~~~~~~~~~~~~~ kernel/sched/alt_core.c: In function '__set_cpus_allowed_ptr': kernel/sched/alt_core.c:1501:35: error: 'struct task_struct' has no member named 'state'; did you mean '__state'? 1501 | if (task_running(p) || p->state == TASK_WAKING) { | ^~~~~ | __state kernel/sched/alt_core.c: In function 'ttwu_do_wakeup': kernel/sched/alt_core.c:1578:12: error: 'struct task_struct' has no member named 'state'; did you mean '__state'? 1578 | p->state = TASK_RUNNING; | ^~~~~ | __state kernel/sched/alt_core.c: At top level: kernel/sched/alt_core.c:1611:6: error: redefinition of 'scheduler_ipi' 1611 | void scheduler_ipi(void) | ^~~~~~~~~~~~~ In file included from kernel/sched/alt_sched.h:4, from kernel/sched/sched.h:6, from kernel/sched/alt_core.c:14: include/linux/sched.h:1968:29: note: previous definition of 'scheduler_ipi' with type 'void(void)' 1968 | static __always_inline void scheduler_ipi(void) | ^~~~~~~~~~~~~ kernel/sched/alt_core.c: In function 'try_to_wake_up': kernel/sched/alt_core.c:1793:26: error: 'struct task_struct' has no member named 'state'; did you mean '__state'? 1793 | if (!(p->state & state)) | ^~~~~ | __state kernel/sched/alt_core.c:1799:20: error: 'struct task_struct' has no member named 'state'; did you mean '__state'? 1799 | p->state = TASK_RUNNING; | ^~~~~ | __state kernel/sched/alt_core.c:1812:18: error: 'struct task_struct' has no member named 'state'; did you mean '__state'? 1812 | if (!(p->state & state)) | ^~~~~ | __state kernel/sched/alt_core.c:1879:12: error: 'struct task_struct' has no member named 'state'; did you mean '__state'? 1879 | p->state = TASK_WAKING; | ^~~~~ | __state kernel/sched/alt_core.c: In function 'sched_fork': kernel/sched/alt_core.c:1973:12: error: 'struct task_struct' has no member named 'state'; did you mean '__state'? 1973 | p->state = TASK_NEW; | ^~~~~ | __state kernel/sched/alt_core.c: In function 'wake_up_new_task': kernel/sched/alt_core.c:2136:12: error: 'struct task_struct' has no member named 'state'; did you mean '__state'? 2136 | p->state = TASK_RUNNING; | ^~~~~ | __state kernel/sched/alt_core.c: In function 'finish_task_switch': kernel/sched/alt_core.c:2384:28: error: 'struct task_struct' has no member named 'state'; did you mean '__state'? 2384 | prev_state = prev->state; | ^~~~~ | __state kernel/sched/alt_core.c: In function 'schedule_tail': kernel/sched/alt_core.c:2433:20: error: variable 'rq' set but not used [-Werror=unused-but-set-variable] 2433 | struct rq *rq; | ^~ kernel/sched/alt_core.c: At top level: kernel/sched/alt_core.c:2518:15: error: conflicting types for 'nr_running'; have 'long unsigned int(void)' 2518 | unsigned long nr_running(void) | ^~~~~~~~~~ In file included from kernel/sched/alt_sched.h:16, from kernel/sched/sched.h:6, from kernel/sched/alt_core.c:14: include/linux/sched/stat.h:20:21: note: previous declaration of 'nr_running' with type 'unsigned int(void)' 20 | extern unsigned int nr_running(void); | ^~~~~~~~~~ kernel/sched/alt_core.c:2565:15: error: conflicting types for 'nr_iowait_cpu'; have 'long unsigned int(int)' 2565 | unsigned long nr_iowait_cpu(int cpu) | ^~~~~~~~~~~~~ In file included from kernel/sched/alt_sched.h:16, from kernel/sched/sched.h:6, from kernel/sched/alt_core.c:14: include/linux/sched/stat.h:23:21: note: previous declaration of 'nr_iowait_cpu' with type 'unsigned int(int)' 23 | extern unsigned int nr_iowait_cpu(int cpu); | ^~~~~~~~~~~~~ kernel/sched/alt_core.c:2600:15: error: conflicting types for 'nr_iowait'; have 'long unsigned int(void)' 2600 | unsigned long nr_iowait(void) | ^~~~~~~~~ In file included from kernel/sched/alt_sched.h:16, from kernel/sched/sched.h:6, from kernel/sched/alt_core.c:14: include/linux/sched/stat.h:22:21: note: previous declaration of 'nr_iowait' with type 'unsigned int(void)' 22 | extern unsigned int nr_iowait(void); | ^~~~~~~~~ kernel/sched/alt_core.c:2706:6: error: conflicting types for 'arch_set_thermal_pressure'; have 'void(struct cpumask *, long unsigned int)' 2706 | void arch_set_thermal_pressure(struct cpumask *cpus, | ^~~~~~~~~~~~~~~~~~~~~~~~~ In file included from kernel/sched/alt_sched.h:19, from kernel/sched/sched.h:6, from kernel/sched/alt_core.c:14: include/linux/sched/topology.h:264:6: note: previous definition of 'arch_set_thermal_pressure' with type 'void(const struct cpumask *, long unsigned int)' 264 | void arch_set_thermal_pressure(const struct cpumask *cpus, | ^~~~~~~~~~~~~~~~~~~~~~~~~ kernel/sched/alt_core.c: In function 'scheduler_tick': kernel/sched/alt_core.c:2753:9: error: implicit declaration of function 'psi_task_tick'; did you mean 'put_task_stack'? [-Werror=implicit-function-declaration] 2753 | psi_task_tick(rq); | ^~~~~~~~~~~~~ | put_task_stack -- 3358 | if (signal_pending_state(prev->state, prev)) { | ^~~~~ | __state kernel/sched/alt_core.c:3359:31: error: 'struct task_struct' has no member named 'state'; did you mean '__state'? 3359 | prev->state = TASK_RUNNING; | ^~~~~ | __state kernel/sched/alt_core.c: In function 'sched_submit_work': kernel/sched/alt_core.c:3438:19: error: 'struct task_struct' has no member named 'state'; did you mean '__state'? 3438 | if (!tsk->state) | ^~~~~ | __state In file included from include/linux/printk.h:11, from include/linux/kernel.h:19, from include/linux/list.h:9, from include/linux/rculist.h:10, from include/linux/pid.h:5, from include/linux/sched.h:14, from kernel/sched/alt_sched.h:4, from kernel/sched/sched.h:6, from kernel/sched/alt_core.c:14: kernel/sched/alt_core.c: In function 'schedule_idle': kernel/sched/alt_core.c:3512:31: error: 'struct task_struct' has no member named 'state'; did you mean '__state'? 3512 | WARN_ON_ONCE(current->state); | ^~~~~ include/linux/once_lite.h:15:41: note: in definition of macro 'DO_ONCE_LITE_IF' 15 | bool __ret_do_once = !!(condition); \ | ^~~~~~~~~ kernel/sched/alt_core.c:3512:9: note: in expansion of macro 'WARN_ON_ONCE' 3512 | WARN_ON_ONCE(current->state); | ^~~~~~~~~~~~ kernel/sched/alt_core.c: In function '__sched_setscheduler': kernel/sched/alt_core.c:4031:46: error: 'MAX_USER_RT_PRIO' undeclared (first use in this function); did you mean 'MAX_RT_PRIO'? 4031 | (p->mm && attr->sched_priority > MAX_USER_RT_PRIO - 1) || | ^~~~~~~~~~~~~~~~ | MAX_RT_PRIO kernel/sched/alt_core.c:4031:46: note: each undeclared identifier is reported only once for each function it appears in kernel/sched/alt_core.c: In function 'sched_setaffinity': kernel/sched/alt_core.c:4533:9: error: implicit declaration of function 'get_online_cpus'; did you mean 'get_online_mems'? [-Werror=implicit-function-declaration] 4533 | get_online_cpus(); | ^~~~~~~~~~~~~~~ | get_online_mems kernel/sched/alt_core.c:4539:17: error: implicit declaration of function 'put_online_cpus'; did you mean 'num_online_cpus'? [-Werror=implicit-function-declaration] 4539 | put_online_cpus(); | ^~~~~~~~~~~~~~~ | num_online_cpus kernel/sched/alt_core.c: At top level: kernel/sched/alt_core.c:4749:13: error: redefinition of '_cond_resched' 4749 | int __sched _cond_resched(void) | ^~~~~~~~~~~~~ In file included from kernel/sched/alt_sched.h:4, from kernel/sched/sched.h:6, from kernel/sched/alt_core.c:14: include/linux/sched.h:2056:19: note: previous definition of '_cond_resched' with type 'int(void)' 2056 | static inline int _cond_resched(void) | ^~~~~~~~~~~~~ kernel/sched/alt_core.c: In function '__do_sys_sched_get_priority_max': kernel/sched/alt_core.c:4902:23: error: 'MAX_USER_RT_PRIO' undeclared (first use in this function); did you mean 'MAX_RT_PRIO'? 4902 | ret = MAX_USER_RT_PRIO-1; | ^~~~~~~~~~~~~~~~ | MAX_RT_PRIO kernel/sched/alt_core.c: In function 'sched_show_task': kernel/sched/alt_core.c:5010:16: error: 'struct task_struct' has no member named 'state'; did you mean '__state'? 5010 | if (p->state == TASK_RUNNING) | ^~~~~ | __state kernel/sched/alt_core.c:5025:9: error: too few arguments to function 'show_stack' 5025 | show_stack(p, NULL); | ^~~~~~~~~~ In file included from kernel/sched/alt_sched.h:9, from kernel/sched/sched.h:6, from kernel/sched/alt_core.c:14: include/linux/sched/debug.h:33:13: note: declared here 33 | extern void show_stack(struct task_struct *task, unsigned long *sp, | ^~~~~~~~~~ kernel/sched/alt_core.c: In function 'state_filter_match': kernel/sched/alt_core.c:5038:18: error: 'struct task_struct' has no member named 'state'; did you mean '__state'? 5038 | if (!(p->state & state_filter)) | ^~~~~ | __state kernel/sched/alt_core.c:5045:56: error: 'struct task_struct' has no member named 'state'; did you mean '__state'? 5045 | if (state_filter == TASK_UNINTERRUPTIBLE && p->state == TASK_IDLE) | ^~~~~ | __state kernel/sched/alt_core.c: At top level: kernel/sched/alt_core.c:5052:6: error: conflicting types for 'show_state_filter'; have 'void(long unsigned int)' 5052 | void show_state_filter(unsigned long state_filter) | ^~~~~~~~~~~~~~~~~ In file included from kernel/sched/alt_sched.h:9, from kernel/sched/sched.h:6, from kernel/sched/alt_core.c:14: include/linux/sched/debug.h:17:13: note: previous declaration of 'show_state_filter' with type 'void(unsigned int)' 17 | extern void show_state_filter(unsigned int state_filter); | ^~~~~~~~~~~~~~~~~ kernel/sched/alt_core.c: In function 'init_idle': kernel/sched/alt_core.c:5118:15: error: 'struct task_struct' has no member named 'state'; did you mean '__state'? 5118 | idle->state = TASK_RUNNING; | ^~~~~ | __state kernel/sched/alt_core.c: At top level: 5340 | int sched_cpu_activate(unsigned int cpu) | ^~~~~~~~~~~~~~~~~~ 5373 | int sched_cpu_deactivate(unsigned int cpu) | ^~~~~~~~~~~~~~~~~~~~ 5416 | int sched_cpu_starting(unsigned int cpu) | ^~~~~~~~~~~~~~~~~~ kernel/sched/alt_core.c: In function 'sched_init_topology_cpumask': 5482 | per_cpu(sd_llc_id, cpu) = cpumask_first(cpu_coregroup_mask(cpu)); | ^~~~~~~~~~~~~~~~~~ kernel/sched/alt_core.c:5482:57: error: passing argument 1 of 'cpumask_first' makes pointer from integer without a cast [-Werror=int-conversion] 5482 | per_cpu(sd_llc_id, cpu) = cpumask_first(cpu_coregroup_mask(cpu)); | ^~~~~~~~~~~~~~~~~~~~~~~ | | | int In file included from include/linux/smp.h:13, from include/linux/lockdep.h:14, from include/linux/rcupdate.h:29, from include/linux/rculist.h:11, from include/linux/pid.h:5, from include/linux/sched.h:14, from kernel/sched/alt_sched.h:4, from kernel/sched/sched.h:6, from kernel/sched/alt_core.c:14: include/linux/cpumask.h:193:64: note: expected 'const struct cpumask *' but argument is of type 'int' 193 | static inline unsigned int cpumask_first(const struct cpumask *srcp) | ~~~~~~~~~~~~~~~~~~~~~~^~~~ kernel/sched/alt_core.c:5484:45: error: passing argument 3 of 'cpumask_and' makes pointer from integer without a cast [-Werror=int-conversion] 5484 | TOPOLOGY_CPUMASK(coregroup, cpu_coregroup_mask(cpu), false); | ^~~~~~~~~~~~~~~~~~~~~~~ | | | int kernel/sched/alt_core.c:5461:35: note: in definition of macro 'TOPOLOGY_CPUMASK' 5461 | if (cpumask_and(chk, chk, mask)) \ | ^~~~ In file included from include/linux/smp.h:13, from include/linux/lockdep.h:14, from include/linux/rcupdate.h:29, from include/linux/rculist.h:11, from include/linux/pid.h:5, from include/linux/sched.h:14, from kernel/sched/alt_sched.h:4, from kernel/sched/sched.h:6, from kernel/sched/alt_core.c:14: include/linux/cpumask.h:403:54: note: expected 'const struct cpumask *' but argument is of type 'int' 403 | const struct cpumask *src2p) | ~~~~~~~~~~~~~~~~~~~~~~^~~~~ kernel/sched/alt_core.c:5484:45: error: passing argument 2 of 'cpumask_complement' makes pointer from integer without a cast [-Werror=int-conversion] 5484 | TOPOLOGY_CPUMASK(coregroup, cpu_coregroup_mask(cpu), false); | ^~~~~~~~~~~~~~~~~~~~~~~ | | | int kernel/sched/alt_core.c:5465:41: note: in definition of macro 'TOPOLOGY_CPUMASK' 5465 | cpumask_complement(chk, mask) | ^~~~ In file included from include/linux/smp.h:13, from include/linux/lockdep.h:14, from include/linux/rcupdate.h:29, from include/linux/rculist.h:11, from include/linux/pid.h:5, from include/linux/sched.h:14, from kernel/sched/alt_sched.h:4, from kernel/sched/sched.h:6, from kernel/sched/alt_core.c:14: include/linux/cpumask.h:458:61: note: expected 'const struct cpumask *' but argument is of type 'int' 458 | const struct cpumask *srcp) | ~~~~~~~~~~~~~~~~~~~~~~^~~~ In file included from include/linux/printk.h:11, from include/linux/kernel.h:19, from include/linux/list.h:9, from include/linux/rculist.h:10, from include/linux/pid.h:5, from include/linux/sched.h:14, from kernel/sched/alt_sched.h:4, from kernel/sched/sched.h:6, from kernel/sched/alt_core.c:14: kernel/sched/alt_core.c: In function '__might_sleep': kernel/sched/alt_core.c:5637:28: error: 'struct task_struct' has no member named 'state'; did you mean '__state'? 5637 | WARN_ONCE(current->state != TASK_RUNNING && current->task_state_change, | ^~~~~ include/linux/once_lite.h:15:41: note: in definition of macro 'DO_ONCE_LITE_IF' 15 | bool __ret_do_once = !!(condition); \ | ^~~~~~~~~ kernel/sched/alt_core.c:5637:9: note: in expansion of macro 'WARN_ONCE' 5637 | WARN_ONCE(current->state != TASK_RUNNING && current->task_state_change, | ^~~~~~~~~ In file included from arch/arc/include/asm/bug.h:30, from include/linux/bug.h:5, from include/linux/thread_info.h:13, from include/asm-generic/preempt.h:5, from ./arch/arc/include/generated/asm/preempt.h:1, from include/linux/preempt.h:78, from include/linux/rcupdate.h:27, from include/linux/rculist.h:11, from include/linux/pid.h:5, from include/linux/sched.h:14, from kernel/sched/alt_sched.h:4, from kernel/sched/sched.h:6, from kernel/sched/alt_core.c:14: kernel/sched/alt_core.c:5640:34: error: 'struct task_struct' has no member named 'state'; did you mean '__state'? 5640 | current->state, | ^~~~~ include/asm-generic/bug.h:91:62: note: in definition of macro '__WARN_printf' 91 | warn_slowpath_fmt(__FILE__, __LINE__, taint, arg); \ | ^~~ include/linux/once_lite.h:19:25: note: in expansion of macro 'WARN' 19 | func(__VA_ARGS__); \ | ^~~~ include/asm-generic/bug.h:150:9: note: in expansion of macro 'DO_ONCE_LITE_IF' 150 | DO_ONCE_LITE_IF(condition, WARN, 1, format) | ^~~~~~~~~~~~~~~ kernel/sched/alt_core.c:5637:9: note: in expansion of macro 'WARN_ONCE' 5637 | WARN_ONCE(current->state != TASK_RUNNING && current->task_state_change, | ^~~~~~~~~ kernel/sched/alt_core.c: In function '___might_sleep': kernel/sched/alt_core.c:5653:23: error: variable 'preempt_disable_ip' set but not used [-Werror=unused-but-set-variable] 5653 | unsigned long preempt_disable_ip; | ^~~~~~~~~~~~~~~~~~ kernel/sched/alt_core.c: At top level: 5813 | struct task_group *sched_create_group(struct task_group *parent) | ^~~~~~~~~~~~~~~~~~ 5824 | void sched_online_group(struct task_group *tg, struct task_group *parent) | ^~~~~~~~~~~~~~~~~~ 5835 | void sched_destroy_group(struct task_group *tg) | ^~~~~~~~~~~~~~~~~~~ 5841 | void sched_offline_group(struct task_group *tg) | ^~~~~~~~~~~~~~~~~~~ 5933 | .legacy_cftypes = cpu_legacy_files, | ^~~~~~~~~~~~~~~~ kernel/sched/alt_core.c:5933:27: note: (near initialization for 'cpu_cgrp_subsys.legacy_cftypes') kernel/sched/alt_core.c: In function 'select_fallback_rq': kernel/sched/alt_core.c:1357:28: error: this statement may fall through [-Werror=implicit-fallthrough=] 1357 | if (IS_ENABLED(CONFIG_CPUSETS)) { | ^ kernel/sched/alt_core.c:1363:17: note: here 1363 | case possible: | ^~~~ At top level: kernel/sched/alt_core.c:142:18: error: 'sched_sg_idle_mask' defined but not used [-Werror=unused-variable] 142 | static cpumask_t sched_sg_idle_mask ____cacheline_aligned_in_smp; | ^~~~~~~~~~~~~~~~~~ In file included from include/linux/perf_event.h:25, from include/linux/trace_events.h:10, from include/trace/syscall.h:7, from include/linux/syscalls.h:87, from kernel/sched/alt_sched.h:38, from kernel/sched/sched.h:6, from kernel/sched/alt_core.c:14: arch/arc/include/asm/perf_event.h:126:27: error: 'arc_pmu_cache_map' defined but not used [-Werror=unused-const-variable=] 126 | static const unsigned int arc_pmu_cache_map[C(MAX)][C(OP_MAX)][C(RESULT_MAX)] = { | ^~~~~~~~~~~~~~~~~ arch/arc/include/asm/perf_event.h:91:27: error: 'arc_pmu_ev_hw_map' defined but not used [-Werror=unused-const-variable=] 91 | static const char * const arc_pmu_ev_hw_map[] = { | ^~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors vim +/resched_curr +652 kernel/sched/alt_core.c 644 645 /* 646 * resched_curr - mark rq's current task 'to be rescheduled now'. 647 * 648 * On UP this means the setting of the need_resched flag, on SMP it 649 * might also involve a cross-CPU call to trigger the scheduler on 650 * the target CPU. 651 */ 653 { 654 struct task_struct *curr = rq->curr; 655 int cpu; 656 657 lockdep_assert_held(&rq->lock); 658 659 if (test_tsk_need_resched(curr)) 660 return; 661 662 cpu = cpu_of(rq); 663 if (cpu == smp_processor_id()) { 664 set_tsk_need_resched(curr); 665 set_preempt_need_resched(); 666 return; 667 } 668 669 if (set_nr_and_not_polling(curr)) 670 smp_send_reschedule(cpu); 671 else 672 trace_sched_wake_idle_without_ipi(cpu); 673 } 674 676 { 677 struct rq *rq = cpu_rq(cpu); 678 unsigned long flags; 679 680 raw_spin_lock_irqsave(&rq->lock, flags); 681 if (cpu_online(cpu) || cpu == smp_processor_id()) 682 resched_curr(cpu_rq(cpu)); 683 raw_spin_unlock_irqrestore(&rq->lock, flags); 684 } 685 686 #ifdef CONFIG_SMP 687 #ifdef CONFIG_NO_HZ_COMMON 688 void nohz_balance_enter_idle(int cpu) 689 { 690 } 691 693 { 694 } 695 697 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org