Hi Florent,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on bpf-next/master]
[also build test WARNING on next-20201112]
[cannot apply to bpf/master linus/master v5.10-rc3]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Florent-Revest/bpf-Expose-a-bpf_sock_from_file-helper-to-tracing-programs/20201113-041233
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
config: i386-randconfig-s001-20201111 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.3-107-gaf3512a6-dirty
        # https://github.com/0day-ci/linux/commit/7fd0725829bee29729e56964e32cad7eb9dc9a85
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Florent-Revest/bpf-Expose-a-bpf_sock_from_file-helper-to-tracing-programs/20201113-041233
        git checkout 7fd0725829bee29729e56964e32cad7eb9dc9a85
        # save the attached .config to linux build tree
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=i386 

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


"sparse warnings: (new ones prefixed by >>)"
>> kernel/trace/bpf_trace.c:1267:29: sparse: sparse: symbol 'bpf_sock_from_file_proto' was not declared. Should it be static?

Please review and possibly fold the followup patch.

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org