Re: [PATCH v2 1/3] mm/damon: mm infrastructure support

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

Hi Aravinda,

kernel test robot noticed the following build errors:

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

url:    https://github.com/intel-lab-lkp/linux/commits/Aravinda-Prasad/mm-damon-mm-infrastructure-support/20240318-212723
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link:    https://lore.kernel.org/r/20240318132848.82686-2-aravinda.prasad%40intel.com
patch subject: [PATCH v2 1/3] mm/damon: mm infrastructure support
config: powerpc-allmodconfig (https://download.01.org/0day-ci/archive/20240319/202403190418.tsSXHwGu-lkp@intel.com/config)
compiler: powerpc64-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240319/202403190418.tsSXHwGu-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/202403190418.tsSXHwGu-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from arch/powerpc/include/asm/kup.h:43,
                    from arch/powerpc/include/asm/uaccess.h:8,
                    from include/linux/uaccess.h:11,
                    from include/linux/sched/task.h:13,
                    from include/linux/sched/signal.h:9,
                    from include/linux/rcuwait.h:6,
                    from include/linux/percpu-rwsem.h:7,
                    from include/linux/fs.h:33,
                    from include/linux/compat.h:17,
                    from arch/powerpc/kernel/asm-offsets.c:12:
>> include/linux/pgtable.h:411:19: error: static declaration of 'pudp_test_and_clear_young' follows non-static declaration
     411 | static inline int pudp_test_and_clear_young(struct vm_area_struct *vma,
         |                   ^~~~~~~~~~~~~~~~~~~~~~~~~
   In file included from arch/powerpc/include/asm/book3s/64/mmu-hash.h:20,
                    from arch/powerpc/include/asm/book3s/64/mmu.h:32,
                    from arch/powerpc/include/asm/mmu.h:391,
                    from arch/powerpc/include/asm/paca.h:18,
                    from arch/powerpc/include/asm/current.h:13,
                    from include/linux/mutex.h:14,
                    from include/linux/rhashtable-types.h:14,
                    from include/linux/ipc.h:7,
                    from include/uapi/linux/sem.h:5,
                    from include/linux/sem.h:5,
                    from include/linux/compat.h:14:
   arch/powerpc/include/asm/book3s/64/pgtable.h:1306:12: note: previous declaration of 'pudp_test_and_clear_young' with type 'int(struct vm_area_struct *, long unsigned int,  pud_t *)'
    1306 | extern int pudp_test_and_clear_young(struct vm_area_struct *vma,
         |            ^~~~~~~~~~~~~~~~~~~~~~~~~
   make[3]: *** [scripts/Makefile.build:116: arch/powerpc/kernel/asm-offsets.s] Error 1
   make[3]: Target 'prepare' not remade because of errors.
   make[2]: *** [Makefile:1191: prepare0] Error 2
   make[2]: Target 'prepare' not remade because of errors.
   make[1]: *** [Makefile:240: __sub-make] Error 2
   make[1]: Target 'prepare' not remade because of errors.
   make: *** [Makefile:240: __sub-make] Error 2
   make: Target 'prepare' not remade because of errors.


vim +/pudp_test_and_clear_young +411 include/linux/pgtable.h

   409	
   410	#ifndef pudp_test_and_clear_young
 > 411	static inline int pudp_test_and_clear_young(struct vm_area_struct *vma,
   412						    unsigned long address,
   413						    pud_t *pudp)
   414	{
   415		return 0;
   416	}
   417	#endif
   418	

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