Re: [RFC PATCH v1 2/9] freezer: Introduce API to set per-task freeze priority

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

Hi Zihuan,

[This is a private test report for your RFC patch.]
kernel test robot noticed the following build warnings:

[auto build test WARNING on akpm-mm/mm-everything]
[also build test WARNING on brauner-vfs/vfs.all linus/master v6.16 next-20250807]
[cannot apply to tip/sched/core kees/for-next/execve]
[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#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Zihuan-Zhang/freezer-Introduce-freeze_priority-field-in-task_struct/20250807-201611
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link:    https://lore.kernel.org/r/20250807121418.139765-3-zhangzihuan%40kylinos.cn
patch subject: [RFC PATCH v1 2/9] freezer: Introduce API to set per-task freeze priority
config: arm-randconfig-002-20250808 (https://download.01.org/0day-ci/archive/20250808/202508080646.M5mv6IBA-lkp@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 10.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250808/202508080646.M5mv6IBA-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/202508080646.M5mv6IBA-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from kernel/fork.c:77:
   include/linux/freezer.h: In function 'freeze_set_default_priority':
>> include/linux/freezer.h:95:55: warning: no return statement in function returning non-void [-Wreturn-type]
      95 | static inline bool freeze_set_default_priority(struct task_struct *p, unsigned int prio) {}
         |                                                       ^~~~~~~~~~~


vim +95 include/linux/freezer.h

    91	
    92	#else /* !CONFIG_FREEZER */
    93	static inline bool frozen(struct task_struct *p) { return false; }
    94	static inline bool freezing(struct task_struct *p) { return false; }
  > 95	static inline bool freeze_set_default_priority(struct task_struct *p, unsigned int prio) {}
    96	static inline void __thaw_task(struct task_struct *t) {}
    97	

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