Re: [RFC bpf-next 1/2] bpf: add a kallsyms BPF iterator

[kernel test robot <lkp@intel.com>]

Hi Alan,

[FYI, it's a private test report for your RFC patch.]
[auto build test WARNING on bpf-next/master]

url:    https://github.com/intel-lab-lkp/linux/commits/Alan-Maguire/bpf-add-a-kallsyms-BPF-iterator/20220625-004938
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
config: mips-randconfig-r031-20220624
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 42a7ddb428c999229491b0effbb1a4059149fba8)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install mips cross compiling tool for clang build
        # apt-get install binutils-mips-linux-gnu
        # https://github.com/intel-lab-lkp/linux/commit/bee65a1c850426a5b6f798753bb50c74a6dca06b
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Alan-Maguire/bpf-add-a-kallsyms-BPF-iterator/20220625-004938
        git checkout bee65a1c850426a5b6f798753bb50c74a6dca06b
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

   kernel/kallsyms.c:591:12: warning: no previous prototype for function 'arch_get_kallsym' [-Wmissing-prototypes]
   int __weak arch_get_kallsym(unsigned int symnum, unsigned long *value,
              ^
   kernel/kallsyms.c:591:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   int __weak arch_get_kallsym(unsigned int symnum, unsigned long *value,
   ^
   static 
>> kernel/kallsyms.c:839:36: warning: unused variable 'bpf_iter_kallsyms_ops' [-Wunused-const-variable]
   static const struct seq_operations bpf_iter_kallsyms_ops = {
                                      ^
   2 warnings generated.


vim +/bpf_iter_kallsyms_ops +839 kernel/kallsyms.c

   838	
 > 839	static const struct seq_operations bpf_iter_kallsyms_ops = {
   840		.start = s_start,
   841		.next = s_next,
   842		.stop = bpf_iter_s_seq_stop,
   843		.show = bpf_iter_s_seq_show,
   844	};
   845	

-- 
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