[melver:ctx-analysis/dev 22/36] arch/um/include/shared/skas/mm_id.h:25:29: warning: '__get_turnstile' declared 'static' but never defined

[melver:ctx-analysis/dev 22/36] arch/um/include/shared/skas/mm_id.h:25:29: warning: '__get_turnstile' declared 'static' but never defined

[kernel test robot]

Hi Marco,

FYI, the error/warning was bisected to this commit, please ignore it if it's irrelevant.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/melver/linux.git ctx-analysis/dev
head:   3b4ba9b3b7c8365712656e62d0ca5a09504b5074
commit: 984de4f8d618b9302bf2f459e217768752f39a69 [22/36] um: Fix incorrect __acquires/__releases annotations
config: um-i386_defconfig (https://download.01.org/0day-ci/archive/20251219/202512191123.9wHzO2Xe-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251219/202512191123.9wHzO2Xe-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/202512191123.9wHzO2Xe-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from arch/um/include/asm/mmu.h:12,
                    from include/linux/mm_types.h:26,
                    from include/linux/mmzone.h:22,
                    from include/linux/gfp.h:7,
                    from include/linux/slab.h:16,
                    from include/linux/crypto.h:18,
                    from arch/um/kernel/asm-offsets.c:6:
>> arch/um/include/shared/skas/mm_id.h:25:29: warning: '__get_turnstile' declared 'static' but never defined [-Wunused-function]
      25 | static inline struct mutex *__get_turnstile(struct mm_id *mm_id);
         |                             ^~~~~~~~~~~~~~~
--
   In file included from arch/um/include/asm/mmu.h:12,
                    from include/linux/mm_types.h:26,
                    from include/linux/mmzone.h:22,
                    from include/linux/gfp.h:7,
                    from include/linux/slab.h:16,
                    from include/linux/crypto.h:18,
                    from arch/um/kernel/asm-offsets.c:6:
>> arch/um/include/shared/skas/mm_id.h:25:29: warning: '__get_turnstile' declared 'static' but never defined [-Wunused-function]
      25 | static inline struct mutex *__get_turnstile(struct mm_id *mm_id);
         |                             ^~~~~~~~~~~~~~~
   In file included from arch/um/include/asm/mmu.h:12,
                    from include/linux/mm_types.h:26,
                    from include/linux/sched/mm.h:8,
                    from kernel/sched/sched.h:15,
                    from kernel/sched/rq-offsets.c:5:
>> arch/um/include/shared/skas/mm_id.h:25:29: warning: '__get_turnstile' declared 'static' but never defined [-Wunused-function]
      25 | static inline struct mutex *__get_turnstile(struct mm_id *mm_id);
         |                             ^~~~~~~~~~~~~~~
--
   In file included from arch/um/include/asm/mmu.h:12,
                    from include/linux/mm_types.h:26,
                    from include/linux/mmzone.h:22,
                    from include/linux/gfp.h:7,
                    from include/linux/slab.h:16,
                    from include/linux/crypto.h:18,
                    from arch/um/kernel/asm-offsets.c:6:
>> arch/um/include/shared/skas/mm_id.h:25:29: warning: '__get_turnstile' declared 'static' but never defined [-Wunused-function]
      25 | static inline struct mutex *__get_turnstile(struct mm_id *mm_id);
         |                             ^~~~~~~~~~~~~~~
   In file included from arch/um/include/asm/mmu.h:12,
                    from include/linux/mm_types.h:26,
                    from include/linux/sched/mm.h:8,
                    from kernel/sched/sched.h:15,
                    from kernel/sched/rq-offsets.c:5:
>> arch/um/include/shared/skas/mm_id.h:25:29: warning: '__get_turnstile' declared 'static' but never defined [-Wunused-function]
      25 | static inline struct mutex *__get_turnstile(struct mm_id *mm_id);
         |                             ^~~~~~~~~~~~~~~


vim +25 arch/um/include/shared/skas/mm_id.h

    23	
    24	/* Internal linkage; declared here for below context analysis annotations. */
  > 25	static inline struct mutex *__get_turnstile(struct mm_id *mm_id);
    26	

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