Re: [PATCH v3 bpf-next 06/11] bpf: Add a new kfunc for cgroup1 hierarchy

Jiri Olsa
2023-10-30T13:59:10Z

On Mon, Oct 30, 2023 at 07:35:25PM +0800, Yafang Shao wrote:
> On Mon, Oct 30, 2023 at 5:01 PM kernel test robot <lkp@intel.com> wrote:
> >
> > Hi Yafang,
> >
> > kernel test robot noticed the following build warnings:
> >
> > [auto build test WARNING on bpf-next/master]
> >
> > url: https://github.com/intel-lab-lkp/linux/commits/Yafang-Shao/cgroup-Remove-unnecessary-list_empty/20231029-143457
> > base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
> > patch link: https://lore.kernel.org/r/20231029061438.4215-7-laoar.shao%40gmail.com
> > patch subject: [PATCH v3 bpf-next 06/11] bpf: Add a new kfunc for cgroup1 hierarchy
> > config: i386-randconfig-013-20231030 (https://download.01.org/0day-ci/archive/20231030/202310301605.CGFI0aSW-lkp@intel.com/config)
> > compiler: gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0
> > reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231030/202310301605.CGFI0aSW-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/202310301605.CGFI0aSW-lkp@intel.com/
> >
> > All warnings (new ones prefixed by >>):
> >
> > kernel/bpf/helpers.c:1893:19: warning: no previous declaration for 'bpf_obj_new_impl' [-Wmissing-declarations]
>
> -Wmissing-declarations is a known issue and somebody is working on it, right?

there's this post [1] from Dave, but seems it never landed

jirka

[1] https://lore.kernel.org/bpf/20230816150634.1162838-1-void@manifault.com/