Re: [PATCH rfc 09/12] sched: psi: bpf hook to handle psi events

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

Hi Roman,

kernel test robot noticed the following build warnings:

[auto build test WARNING on akpm-mm/mm-everything]

url:    https://github.com/intel-lab-lkp/linux/commits/Roman-Gushchin/mm-introduce-a-bpf-hook-for-OOM-handling/20250428-113742
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link:    https://lore.kernel.org/r/20250428033617.3797686-10-roman.gushchin%40linux.dev
patch subject: [PATCH rfc 09/12] sched: psi: bpf hook to handle psi events
config: sh-randconfig-001-20250428 (https://download.01.org/0day-ci/archive/20250428/202504281309.smYiDStM-lkp@intel.com/config)
compiler: sh4-linux-gcc (GCC) 10.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250428/202504281309.smYiDStM-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/202504281309.smYiDStM-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from kernel/sched/build_utility.c:94:
>> kernel/sched/psi.c:193:38: warning: 'bpf_psi_hook_set' defined but not used [-Wunused-const-variable=]
     193 | static const struct btf_kfunc_id_set bpf_psi_hook_set = {
         |                                      ^~~~~~~~~~~~~~~~


vim +/bpf_psi_hook_set +193 kernel/sched/psi.c

   192	
 > 193	static const struct btf_kfunc_id_set bpf_psi_hook_set = {
   194		.owner = THIS_MODULE,
   195		.set   = &bpf_psi_hooks,
   196	};
   197	

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