tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 43d8c124ec4624389b14d42595e5f0195e3e5a1d commit: d97bc9c8827bb5cd9f66dab10e0b505a879256e2 [2679/2679] bpf-rvi: Add bpf_mem_{file_{hugepage,pmdmapped},kreclaimable} kfunc config: loongarch-allmodconfig (https://download.01.org/0day-ci/archive/20250815/202508151431.mBUI7ayW-lkp@i...) compiler: clang version 19.1.7 (https://github.com/llvm/llvm-project cd708029e0b2869e80abe31ddb175f7c35361f90) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250815/202508151431.mBUI7ayW-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/202508151431.mBUI7ayW-lkp@intel.com/ All warnings (new ones prefixed by >>): | ^ | static kernel/bpf-rvi/common_kfuncs.c:34:35: warning: no previous prototype for function '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:34:13: note: declare 'static' if the function is not intended to be used outside of this translation unit 34 | __bpf_kfunc struct pid_namespace *bpf_task_active_pid_ns(struct task_struct *task) | ^ | static kernel/bpf-rvi/common_kfuncs.c:39:17: warning: no previous prototype for function 'bpf_pidns_nr_tasks' [-Wmissing-prototypes] 39 | __bpf_kfunc u64 bpf_pidns_nr_tasks(struct pid_namespace *ns) | ^ kernel/bpf-rvi/common_kfuncs.c:39:13: note: declare 'static' if the function is not intended to be used outside of this translation unit 39 | __bpf_kfunc u64 bpf_pidns_nr_tasks(struct pid_namespace *ns) | ^ | static kernel/bpf-rvi/common_kfuncs.c:53:17: warning: no previous prototype for function 'bpf_pidns_last_pid' [-Wmissing-prototypes] 53 | __bpf_kfunc u32 bpf_pidns_last_pid(struct pid_namespace *ns) | ^ kernel/bpf-rvi/common_kfuncs.c:53:13: note: declare 'static' if the function is not intended to be used outside of this translation unit 53 | __bpf_kfunc u32 bpf_pidns_last_pid(struct pid_namespace *ns) | ^ | static kernel/bpf-rvi/common_kfuncs.c:82:18: warning: no previous prototype for function 'bpf_si_memswinfo' [-Wmissing-prototypes] 82 | __bpf_kfunc void bpf_si_memswinfo(struct bpf_sysinfo *bsi) | ^ kernel/bpf-rvi/common_kfuncs.c:82:13: note: declare 'static' if the function is not intended to be used outside of this translation unit 82 | __bpf_kfunc void bpf_si_memswinfo(struct bpf_sysinfo *bsi) | ^ | static kernel/bpf-rvi/common_kfuncs.c:92:27: warning: no previous prototype for function '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:92:13: note: declare 'static' if the function is not intended to be used outside of this translation unit 92 | __bpf_kfunc unsigned long bpf_page_counter_read(struct page_counter *counter) | ^ | static kernel/bpf-rvi/common_kfuncs.c:102:18: warning: no previous prototype for function '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:102:13: note: declare 'static' if the function is not intended to be used outside of this translation unit 102 | __bpf_kfunc void bpf_seq_file_append(struct seq_file *dst, struct seq_file *src) | ^ | static kernel/bpf-rvi/common_kfuncs.c:116:18: warning: no previous prototype for function '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:116:13: note: declare 'static' if the function is not intended to be used outside of this translation unit 116 | __bpf_kfunc void bpf_get_boottime_timens(struct task_struct *tsk, struct timespec64 *boottime) | ^ | static kernel/bpf-rvi/common_kfuncs.c:122:27: warning: no previous prototype for function 'bpf_get_total_forks' [-Wmissing-prototypes] 122 | __bpf_kfunc unsigned long bpf_get_total_forks(void) | ^ kernel/bpf-rvi/common_kfuncs.c:122:13: note: declare 'static' if the function is not intended to be used outside of this translation unit 122 | __bpf_kfunc unsigned long bpf_get_total_forks(void) | ^ | static kernel/bpf-rvi/common_kfuncs.c:127:26: warning: no previous prototype for function 'bpf_nr_running' [-Wmissing-prototypes] 127 | __bpf_kfunc unsigned int bpf_nr_running(void) | ^ kernel/bpf-rvi/common_kfuncs.c:127:13: note: declare 'static' if the function is not intended to be used outside of this translation unit 127 | __bpf_kfunc unsigned int bpf_nr_running(void) | ^ | static kernel/bpf-rvi/common_kfuncs.c:132:32: warning: no previous prototype for function 'bpf_nr_context_switches' [-Wmissing-prototypes] 132 | __bpf_kfunc unsigned long long bpf_nr_context_switches(void) | ^ kernel/bpf-rvi/common_kfuncs.c:132:13: note: declare 'static' if the function is not intended to be used outside of this translation unit 132 | __bpf_kfunc unsigned long long bpf_nr_context_switches(void) | ^ | static kernel/bpf-rvi/common_kfuncs.c:137:26: warning: no previous prototype for function 'bpf_nr_iowait' [-Wmissing-prototypes] 137 | __bpf_kfunc unsigned int bpf_nr_iowait(void) | ^ kernel/bpf-rvi/common_kfuncs.c:137:13: note: declare 'static' if the function is not intended to be used outside of this translation unit 137 | __bpf_kfunc unsigned int bpf_nr_iowait(void) | ^ | static kernel/bpf-rvi/common_kfuncs.c:143:26: warning: no previous prototype for function 'bpf_kstat_softirqs_cpu' [-Wmissing-prototypes] 143 | __bpf_kfunc unsigned int bpf_kstat_softirqs_cpu(unsigned int irq, int cpu) | ^ kernel/bpf-rvi/common_kfuncs.c:143:13: note: declare 'static' if the function is not intended to be used outside of this translation unit 143 | __bpf_kfunc unsigned int bpf_kstat_softirqs_cpu(unsigned int irq, int cpu) | ^ | static kernel/bpf-rvi/common_kfuncs.c:148:27: warning: no previous prototype for function 'bpf_kstat_cpu_irqs_sum' [-Wmissing-prototypes] 148 | __bpf_kfunc unsigned long bpf_kstat_cpu_irqs_sum(unsigned int cpu) | ^ kernel/bpf-rvi/common_kfuncs.c:148:13: note: declare 'static' if the function is not intended to be used outside of this translation unit 148 | __bpf_kfunc unsigned long bpf_kstat_cpu_irqs_sum(unsigned int cpu) | ^ | static kernel/bpf-rvi/common_kfuncs.c:153:18: warning: no previous prototype for function 'bpf_kcpustat_cpu_fetch' [-Wmissing-prototypes] 153 | __bpf_kfunc void bpf_kcpustat_cpu_fetch(struct kernel_cpustat *dst, int cpu) | ^ kernel/bpf-rvi/common_kfuncs.c:153:13: note: declare 'static' if the function is not intended to be used outside of this translation unit 153 | __bpf_kfunc void bpf_kcpustat_cpu_fetch(struct kernel_cpustat *dst, int cpu) | ^ | static

...

kernel/bpf-rvi/common_kfuncs.c:162:27: warning: no previous prototype for function 'bpf_mem_file_hugepage' [-Wmissing-prototypes] 162 | __bpf_kfunc unsigned long bpf_mem_file_hugepage(void) | ^ kernel/bpf-rvi/common_kfuncs.c:162:13: note: declare 'static' if the function is not intended to be used outside of this translation unit 162 | __bpf_kfunc unsigned long bpf_mem_file_hugepage(void) | ^ | static kernel/bpf-rvi/common_kfuncs.c:167:27: warning: no previous prototype for function 'bpf_mem_file_pmdmapped' [-Wmissing-prototypes] 167 | __bpf_kfunc unsigned long bpf_mem_file_pmdmapped(void) | ^ kernel/bpf-rvi/common_kfuncs.c:167:13: note: declare 'static' if the function is not intended to be used outside of this translation unit 167 | __bpf_kfunc unsigned long bpf_mem_file_pmdmapped(void) | ^ | static kernel/bpf-rvi/common_kfuncs.c:172:27: warning: no previous prototype for function 'bpf_mem_kreclaimable' [-Wmissing-prototypes] 172 | __bpf_kfunc unsigned long bpf_mem_kreclaimable(void) | ^ kernel/bpf-rvi/common_kfuncs.c:172:13: note: declare 'static' if the function is not intended to be used outside of this translation unit 172 | __bpf_kfunc unsigned long bpf_mem_kreclaimable(void) | ^ | static 18 warnings generated.

vim +/bpf_mem_file_hugepage +162 kernel/bpf-rvi/common_kfuncs.c 157 158 /* 159 * Meminfo related kfuncs 160 */ 161

162 __bpf_kfunc unsigned long bpf_mem_file_hugepage(void) 163 { 164 return global_node_page_state(NR_FILE_THPS); 165 } 166 167 __bpf_kfunc unsigned long bpf_mem_file_pmdmapped(void) 168 { 169 return global_node_page_state(NR_FILE_PMDMAPPED); 170 } 171 172 __bpf_kfunc unsigned long bpf_mem_kreclaimable(void) 173 { 174 return global_node_page_state_pages(NR_SLAB_RECLAIMABLE_B) + 175 global_node_page_state(NR_KERNEL_MISC_RECLAIMABLE); 176 } 177

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