tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: c46f803e3465bd0ca66716804a4d3e20f586ac0d commit: 713cfd2684fa5ea08b144d92b9858b932c0f1705 [20703/23707] sched: Introduce smart grid scheduling strategy for cfs config: arm64-randconfig-004-20240913 (https://download.01.org/0day-ci/archive/20240913/202409131450.IS4ToWpC-lkp@i...) compiler: aarch64-linux-gcc (GCC) 14.1.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240913/202409131450.IS4ToWpC-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/202409131450.IS4ToWpC-lkp@intel.com/ All errors (new ones prefixed by >>): kernel/sched/core.c:1587:6: warning: no previous prototype for 'sched_set_stop_task' [-Wmissing-prototypes] 1587 | void sched_set_stop_task(int cpu, struct task_struct *stop) | ^~~~~~~~~~~~~~~~~~~ kernel/sched/core.c:3771:35: warning: no previous prototype for 'preempt_schedule_irq' [-Wmissing-prototypes] 3771 | asmlinkage __visible void __sched preempt_schedule_irq(void) | ^~~~~~~~~~~~~~~~~~~~ kernel/sched/core.c: In function 'sched_cpu_activate': kernel/sched/core.c:5845:9: error: implicit declaration of function 'tg_update_affinity_domains' [-Werror=implicit-function-declaration] 5845 | tg_update_affinity_domains(cpu, 1); | ^~~~~~~~~~~~~~~~~~~~~~~~~~ kernel/sched/core.c: In function 'sched_init_smp':

...

kernel/sched/core.c:5976:9: error: implicit declaration of function 'init_auto_affinity'; did you mean 'irq_set_affinity'? [-Werror=implicit-function-declaration] 5976 | init_auto_affinity(&root_task_group); | ^~~~~~~~~~~~~~~~~~ | irq_set_affinity kernel/sched/core.c:5976:29: error: 'root_task_group' undeclared (first use in this function); did you mean 'task_group'? 5976 | init_auto_affinity(&root_task_group); | ^~~~~~~~~~~~~~~ | task_group kernel/sched/core.c:5976:29: note: each undeclared identifier is reported only once for each function it appears in kernel/sched/core.c: In function 'sched_init': kernel/sched/core.c:6029:39: warning: variable 'ptr' set but not used [-Wunused-but-set-variable] 6029 | unsigned long alloc_size = 0, ptr; | ^~~ In file included from include/linux/migrate.h:6, from kernel/sched/sched.h:52, from kernel/sched/core.c:8: include/linux/mempolicy.h: At top level: include/linux/mempolicy.h:329:13: warning: '__do_mbind' defined but not used [-Wunused-function] 329 | static long __do_mbind(unsigned long start, unsigned long len, | ^~~~~~~~~~ cc1: some warnings being treated as errors -- In file included from include/linux/list.h:9, from include/linux/resource_ext.h:17, from include/linux/acpi.h:26, from drivers/iommu/arm-smmu-v3.c:23: drivers/iommu/arm-smmu-v3.c: In function 'arm_smmu_device_hw_probe': drivers/iommu/arm-smmu-v3.c:223:55: error: 'CONFIG_CMA_ALIGNMENT' undeclared (first use in this function); did you mean 'CONFIG_CMDLINE'? 223 | #define Q_MAX_SZ_SHIFT (PAGE_SHIFT + CONFIG_CMA_ALIGNMENT) | ^~~~~~~~~~~~~~~~~~~~ include/linux/kernel.h:851:36: note: in definition of macro '__typecheck' 851 | (!!(sizeof((typeof(x) *)1 == (typeof(y) *)1))) | ^ include/linux/kernel.h:875:31: note: in expansion of macro '__safe_cmp' 875 | __builtin_choose_expr(__safe_cmp(x, y), \ | ^~~~~~~~~~ include/linux/kernel.h:943:33: note: in expansion of macro '__careful_cmp' 943 | #define min_t(type, x, y) __careful_cmp((type)(x), (type)(y), <) | ^~~~~~~~~~~~~ drivers/iommu/arm-smmu-v3.c:4024:40: note: in expansion of macro 'min_t' 4024 | smmu->cmdq.q.llq.max_n_shift = min_t(u32, CMDQ_MAX_SZ_SHIFT, | ^~~~~ drivers/iommu/arm-smmu-v3.c:296:42: note: in expansion of macro 'Q_MAX_SZ_SHIFT' 296 | #define CMDQ_MAX_SZ_SHIFT (Q_MAX_SZ_SHIFT - CMDQ_ENT_SZ_SHIFT) | ^~~~~~~~~~~~~~ drivers/iommu/arm-smmu-v3.c:4024:51: note: in expansion of macro 'CMDQ_MAX_SZ_SHIFT' 4024 | smmu->cmdq.q.llq.max_n_shift = min_t(u32, CMDQ_MAX_SZ_SHIFT, | ^~~~~~~~~~~~~~~~~ drivers/iommu/arm-smmu-v3.c:223:55: note: each undeclared identifier is reported only once for each function it appears in 223 | #define Q_MAX_SZ_SHIFT (PAGE_SHIFT + CONFIG_CMA_ALIGNMENT) | ^~~~~~~~~~~~~~~~~~~~ include/linux/kernel.h:851:36: note: in definition of macro '__typecheck' 851 | (!!(sizeof((typeof(x) *)1 == (typeof(y) *)1))) | ^ include/linux/kernel.h:875:31: note: in expansion of macro '__safe_cmp' 875 | __builtin_choose_expr(__safe_cmp(x, y), \ | ^~~~~~~~~~ include/linux/kernel.h:943:33: note: in expansion of macro '__careful_cmp' 943 | #define min_t(type, x, y) __careful_cmp((type)(x), (type)(y), <) | ^~~~~~~~~~~~~ drivers/iommu/arm-smmu-v3.c:4024:40: note: in expansion of macro 'min_t' 4024 | smmu->cmdq.q.llq.max_n_shift = min_t(u32, CMDQ_MAX_SZ_SHIFT, | ^~~~~ drivers/iommu/arm-smmu-v3.c:296:42: note: in expansion of macro 'Q_MAX_SZ_SHIFT' 296 | #define CMDQ_MAX_SZ_SHIFT (Q_MAX_SZ_SHIFT - CMDQ_ENT_SZ_SHIFT) | ^~~~~~~~~~~~~~ drivers/iommu/arm-smmu-v3.c:4024:51: note: in expansion of macro 'CMDQ_MAX_SZ_SHIFT' 4024 | smmu->cmdq.q.llq.max_n_shift = min_t(u32, CMDQ_MAX_SZ_SHIFT, | ^~~~~~~~~~~~~~~~~ include/linux/kernel.h:875:9: error: first argument to '__builtin_choose_expr' not a constant 875 | __builtin_choose_expr(__safe_cmp(x, y), \ | ^~~~~~~~~~~~~~~~~~~~~ include/linux/kernel.h:943:33: note: in expansion of macro '__careful_cmp' 943 | #define min_t(type, x, y) __careful_cmp((type)(x), (type)(y), <) | ^~~~~~~~~~~~~ drivers/iommu/arm-smmu-v3.c:4024:40: note: in expansion of macro 'min_t' 4024 | smmu->cmdq.q.llq.max_n_shift = min_t(u32, CMDQ_MAX_SZ_SHIFT, | ^~~~~ include/linux/kernel.h:875:9: error: first argument to '__builtin_choose_expr' not a constant 875 | __builtin_choose_expr(__safe_cmp(x, y), \ | ^~~~~~~~~~~~~~~~~~~~~ include/linux/kernel.h:943:33: note: in expansion of macro '__careful_cmp' 943 | #define min_t(type, x, y) __careful_cmp((type)(x), (type)(y), <) | ^~~~~~~~~~~~~ drivers/iommu/arm-smmu-v3.c:4038:40: note: in expansion of macro 'min_t' 4038 | smmu->evtq.q.llq.max_n_shift = min_t(u32, EVTQ_MAX_SZ_SHIFT, | ^~~~~ include/linux/kernel.h:875:9: error: first argument to '__builtin_choose_expr' not a constant 875 | __builtin_choose_expr(__safe_cmp(x, y), \ | ^~~~~~~~~~~~~~~~~~~~~ include/linux/kernel.h:943:33: note: in expansion of macro '__careful_cmp' 943 | #define min_t(type, x, y) __careful_cmp((type)(x), (type)(y), <) | ^~~~~~~~~~~~~ drivers/iommu/arm-smmu-v3.c:4040:40: note: in expansion of macro 'min_t' 4040 | smmu->priq.q.llq.max_n_shift = min_t(u32, PRIQ_MAX_SZ_SHIFT, | ^~~~~ drivers/iommu/arm-smmu-v3.c: At top level: drivers/iommu/arm-smmu-v3.c:4343:5: warning: no previous prototype for 'arm_smmu_set_dev_mpam' [-Wmissing-prototypes] 4343 | int arm_smmu_set_dev_mpam(struct device *dev, int ssid, int partid, int pmg, | ^~~~~~~~~~~~~~~~~~~~~ drivers/iommu/arm-smmu-v3.c:4385:5: warning: no previous prototype for 'arm_smmu_get_dev_mpam' [-Wmissing-prototypes] 4385 | int arm_smmu_get_dev_mpam(struct device *dev, int ssid, int *partid, int *pmg, | ^~~~~~~~~~~~~~~~~~~~~ drivers/iommu/arm-smmu-v3.c:4399:5: warning: no previous prototype for 'arm_smmu_set_dev_user_mpam_en' [-Wmissing-prototypes] 4399 | int arm_smmu_set_dev_user_mpam_en(struct device *dev, int user_mpam_en) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/iommu/arm-smmu-v3.c:4417:5: warning: no previous prototype for 'arm_smmu_get_dev_user_mpam_en' [-Wmissing-prototypes] 4417 | int arm_smmu_get_dev_user_mpam_en(struct device *dev, int *user_mpam_en) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

vim +5976 kernel/sched/core.c 5949 5950 void __init sched_init_smp(void) 5951 { 5952 sched_init_numa(); 5953 5954 /* 5955 * There's no userspace yet to cause hotplug operations; hence all the 5956 * CPU masks are stable and all blatant races in the below code cannot 5957 * happen. The hotplug lock is nevertheless taken to satisfy lockdep, 5958 * but there won't be any contention on it. 5959 */ 5960 cpus_read_lock(); 5961 mutex_lock(&sched_domains_mutex); 5962 sched_init_domains(cpu_active_mask); 5963 mutex_unlock(&sched_domains_mutex); 5964 cpus_read_unlock(); 5965 5966 /* Move init over to a non-isolated CPU */ 5967 if (set_cpus_allowed_ptr(current, housekeeping_cpumask(HK_FLAG_DOMAIN)) < 0) 5968 BUG(); 5969 sched_init_granularity(); 5970 5971 init_sched_rt_class(); 5972 init_sched_dl_class(); 5973 5974 sched_smp_initialized = true; 5975

5976 init_auto_affinity(&root_task_group); 5977 } 5978

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