tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: faa195bad3afed3c326917fb4cd36e0bd311220c commit: 34f90dce941b028e02a0336711907b220e3c5765 [3098/3098] bpf-rvi: Add cpu runqueue related kfuncs config: x86_64-randconfig-001-20251104 (https://download.01.org/0day-ci/archive/20251105/202511050754.SzG0bccj-lkp@i...) compiler: gcc-14 (Debian 14.2.0-19) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251105/202511050754.SzG0bccj-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/202511050754.SzG0bccj-lkp@intel.com/ All warnings (new ones prefixed by >>): kernel/bpf-rvi/common_kfuncs.c:25:32: warning: no previous prototype for 'bpf_mem_cgroup_from_task' [-Wmissing-prototypes] 25 | __bpf_kfunc struct mem_cgroup *bpf_mem_cgroup_from_task(struct task_struct *p) | ^~~~~~~~~~~~~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:34:35: warning: no previous prototype for 'bpf_task_active_pid_ns' [-Wmissing-prototypes] 34 | __bpf_kfunc struct pid_namespace *bpf_task_active_pid_ns(struct task_struct *task) | ^~~~~~~~~~~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:39:17: warning: no previous prototype for 'bpf_pidns_nr_tasks' [-Wmissing-prototypes] 39 | __bpf_kfunc u64 bpf_pidns_nr_tasks(struct pid_namespace *ns) | ^~~~~~~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:53:17: warning: no previous prototype for 'bpf_pidns_last_pid' [-Wmissing-prototypes] 53 | __bpf_kfunc u32 bpf_pidns_last_pid(struct pid_namespace *ns) | ^~~~~~~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:82:18: warning: no previous prototype for 'bpf_si_memswinfo' [-Wmissing-prototypes] 82 | __bpf_kfunc void bpf_si_memswinfo(struct bpf_sysinfo *bsi) | ^~~~~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:92:27: warning: no previous prototype for 'bpf_page_counter_read' [-Wmissing-prototypes] 92 | __bpf_kfunc unsigned long bpf_page_counter_read(struct page_counter *counter) | ^~~~~~~~~~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:102:18: warning: no previous prototype for 'bpf_seq_file_append' [-Wmissing-prototypes] 102 | __bpf_kfunc void bpf_seq_file_append(struct seq_file *dst, struct seq_file *src) | ^~~~~~~~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:116:18: warning: no previous prototype for 'bpf_get_boottime_timens' [-Wmissing-prototypes] 116 | __bpf_kfunc void bpf_get_boottime_timens(struct task_struct *tsk, struct timespec64 *boottime) | ^~~~~~~~~~~~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:122:27: warning: no previous prototype for 'bpf_get_total_forks' [-Wmissing-prototypes] 122 | __bpf_kfunc unsigned long bpf_get_total_forks(void) | ^~~~~~~~~~~~~~~~~~~

...

kernel/bpf-rvi/common_kfuncs.c:127:26: warning: no previous prototype for 'bpf_nr_running' [-Wmissing-prototypes] 127 | __bpf_kfunc unsigned int bpf_nr_running(void) | ^~~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:132:32: warning: no previous prototype for 'bpf_nr_context_switches' [-Wmissing-prototypes] 132 | __bpf_kfunc unsigned long long bpf_nr_context_switches(void) | ^~~~~~~~~~~~~~~~~~~~~~~ kernel/bpf-rvi/common_kfuncs.c:137:26: warning: no previous prototype for 'bpf_nr_iowait' [-Wmissing-prototypes] 137 | __bpf_kfunc unsigned int bpf_nr_iowait(void) | ^~~~~~~~~~~~~

vim +/bpf_nr_running +127 kernel/bpf-rvi/common_kfuncs.c 96 97 /* 98 * Stat related kfuncs 99 */ 100 101 /* Moving src's content to the end of dst. Reference: seq_vprintf. */

102 __bpf_kfunc void bpf_seq_file_append(struct seq_file *dst, struct seq_file *src) 103 { 104 /* 105 * ->count: length of content 106 * ->size: available buffer space 107 * i.e. seq_printf(dst, "%s", src->buf) 108 */ 109 if (dst->count < dst->size) 110 if (src->count < dst->size - dst->count) { 111 memmove(dst->buf + dst->count, src->buf, src->count); 112 dst->count += src->count; 113 } 114 } 115 116 __bpf_kfunc void bpf_get_boottime_timens(struct task_struct *tsk, struct timespec64 *boottime) 117 { 118 getboottime64(boottime); 119 *boottime = timespec64_sub(*boottime, tsk->nsproxy->time_ns->offsets.boottime); 120 } 121 122 __bpf_kfunc unsigned long bpf_get_total_forks(void) 123 { 124 return total_forks; 125 } 126 127 __bpf_kfunc unsigned int bpf_nr_running(void) 128 { 129 return nr_running(); 130 } 131 132 __bpf_kfunc unsigned long long bpf_nr_context_switches(void) 133 { 134 return nr_context_switches(); 135 } 136 137 __bpf_kfunc unsigned int bpf_nr_iowait(void) 138 { 139 return nr_iowait(); 140 } 141

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