[openeuler:OLK-6.6 3195/3195] drivers/base/arch_numa.c:194:12: warning: no previous prototype for function 'node_reclaim_distance_setup'

[openeuler:OLK-6.6 3195/3195] drivers/base/arch_numa.c:194:12: warning: no previous prototype for function 'node_reclaim_distance_setup'

[kernel test robot]

tree:   https://gitee.com/openeuler/kernel.git OLK-6.6
head:   5f56814d65eaa85e3277534a309f4e7b4f095412
commit: 5e5d40e65cb55e4699c9879674a004f246606a8d [3195/3195] arch_numa: Make node reclaim distance adjustment always available
config: arm64-randconfig-002-20251115 (https://download.01.org/0day-ci/archive/20251115/202511151309.KnZraqS3-lkp@intel.com/config)
compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251115/202511151309.KnZraqS3-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/202511151309.KnZraqS3-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/base/arch_numa.c:194:12: warning: no previous prototype for function 'node_reclaim_distance_setup' [-Wmissing-prototypes]
     194 | int __init node_reclaim_distance_setup(char *str)
         |            ^
   drivers/base/arch_numa.c:194:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
     194 | int __init node_reclaim_distance_setup(char *str)
         | ^
         | static 
   1 warning generated.

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for HALTPOLL_CPUIDLE
   Depends on [n]: CPU_IDLE [=n] && ARCH_CPUIDLE_HALTPOLL [=y] && ARCH_HAS_OPTIMIZED_POLL [=y]
   Selected by [y]:
   - ARM64 [=y]


vim +/node_reclaim_distance_setup +194 drivers/base/arch_numa.c

   192	
   193	#define DISTANCE_MAX		(1 << DISTANCE_BITS)
 > 194	int __init node_reclaim_distance_setup(char *str)
   195	{
   196		int val;
   197	
   198		if (kstrtoint(str, 0, &val))
   199			return -EINVAL;
   200	
   201		if (val < LOCAL_DISTANCE || val >= DISTANCE_MAX)
   202			return -EINVAL;
   203	
   204		if (val != RECLAIM_DISTANCE) {
   205			node_reclaim_distance = val;
   206			pr_info("Force set node_reclaim_distance to %d\n", val);
   207		}
   208	
   209		return 0;
   210	}
   211	early_param("node_reclaim_distance", node_reclaim_distance_setup);
   212	

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