tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 43d8c124ec4624389b14d42595e5f0195e3e5a1d commit: 5e4cec4acb12a17b26d4d2ae4c29eb29b017f854 [2679/2679] bpf-rvi: Add bpf_page_counter_read() kfunc config: loongarch-allmodconfig (https://download.01.org/0day-ci/archive/20250815/202508150534.p34D4hUR-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/20250815/202508150534.p34D4hUR-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/202508150534.p34D4hUR-lkp@intel.com/ All warnings (new ones prefixed by >>): kernel/bpf-rvi/common_kfuncs.c:19:32: warning: no previous prototype for function 'bpf_mem_cgroup_from_task' [-Wmissing-prototypes] 19 | __bpf_kfunc struct mem_cgroup *bpf_mem_cgroup_from_task(struct task_struct *p) | ^ kernel/bpf-rvi/common_kfuncs.c:19:13: note: declare 'static' if the function is not intended to be used outside of this translation unit 19 | __bpf_kfunc struct mem_cgroup *bpf_mem_cgroup_from_task(struct task_struct *p) | ^ | static kernel/bpf-rvi/common_kfuncs.c:28:35: warning: no previous prototype for function 'bpf_task_active_pid_ns' [-Wmissing-prototypes] 28 | __bpf_kfunc struct pid_namespace *bpf_task_active_pid_ns(struct task_struct *task) | ^ kernel/bpf-rvi/common_kfuncs.c:28:13: note: declare 'static' if the function is not intended to be used outside of this translation unit 28 | __bpf_kfunc struct pid_namespace *bpf_task_active_pid_ns(struct task_struct *task) | ^ | static kernel/bpf-rvi/common_kfuncs.c:33:17: warning: no previous prototype for function 'bpf_pidns_nr_tasks' [-Wmissing-prototypes] 33 | __bpf_kfunc u64 bpf_pidns_nr_tasks(struct pid_namespace *ns) | ^ kernel/bpf-rvi/common_kfuncs.c:33:13: note: declare 'static' if the function is not intended to be used outside of this translation unit 33 | __bpf_kfunc u64 bpf_pidns_nr_tasks(struct pid_namespace *ns) | ^ | static kernel/bpf-rvi/common_kfuncs.c:47:17: warning: no previous prototype for function 'bpf_pidns_last_pid' [-Wmissing-prototypes] 47 | __bpf_kfunc u32 bpf_pidns_last_pid(struct pid_namespace *ns) | ^ kernel/bpf-rvi/common_kfuncs.c:47:13: note: declare 'static' if the function is not intended to be used outside of this translation unit 47 | __bpf_kfunc u32 bpf_pidns_last_pid(struct pid_namespace *ns) | ^ | static kernel/bpf-rvi/common_kfuncs.c:76:18: warning: no previous prototype for function 'bpf_si_memswinfo' [-Wmissing-prototypes] 76 | __bpf_kfunc void bpf_si_memswinfo(struct bpf_sysinfo *bsi) | ^ kernel/bpf-rvi/common_kfuncs.c:76:13: note: declare 'static' if the function is not intended to be used outside of this translation unit 76 | __bpf_kfunc void bpf_si_memswinfo(struct bpf_sysinfo *bsi) | ^ | static

...

kernel/bpf-rvi/common_kfuncs.c:86:27: warning: no previous prototype for function 'bpf_page_counter_read' [-Wmissing-prototypes] 86 | __bpf_kfunc unsigned long bpf_page_counter_read(struct page_counter *counter) | ^ kernel/bpf-rvi/common_kfuncs.c:86:13: note: declare 'static' if the function is not intended to be used outside of this translation unit 86 | __bpf_kfunc unsigned long bpf_page_counter_read(struct page_counter *counter) | ^ | static 6 warnings generated.

vim +/bpf_page_counter_read +86 kernel/bpf-rvi/common_kfuncs.c 85

86 __bpf_kfunc unsigned long bpf_page_counter_read(struct page_counter *counter) 87 { 88 return page_counter_read(counter); 89 } 90

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