* [openeuler:OLK-6.6 2679/2679] kernel/bpf-rvi/common_kfuncs.c:162:27: warning: no previous prototype for function 'bpf_mem_file_hugepage'
@ 2025-08-15 6:58 kernel test robot
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From: kernel test robot @ 2025-08-15 6:58 UTC (permalink / raw)
To: kernel, GONG Ruiqi; +Cc: oe-kbuild-all
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@intel.com/config)
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@intel.com/reproduce)
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
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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2025-08-15 6:58 [openeuler:OLK-6.6 2679/2679] kernel/bpf-rvi/common_kfuncs.c:162:27: warning: no previous prototype for function 'bpf_mem_file_hugepage' kernel test robot
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