[openeuler:OLK-6.6 3098/3098] arch/x86/kernel/cpu/bpf-rvi.c:129:25: warning: no previous prototype for 'bpf_arch_flags'

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

tree:   https://gitee.com/openeuler/kernel.git OLK-6.6
head:   a29fc03bd0ddaf7388cf31604ef5bd9807585109
commit: c7103b690d364f20ccabd4acc558fa4a4b293364 [3098/3098] bpf: Add bpf_arch_flags kunc for x86
config: x86_64-randconfig-001-20251104 (https://download.01.org/0day-ci/archive/20251104/202511040644.p8pfMDIP-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/20251104/202511040644.p8pfMDIP-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/202511040644.p8pfMDIP-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> arch/x86/kernel/cpu/bpf-rvi.c:129:25: warning: no previous prototype for 'bpf_arch_flags' [-Wmissing-prototypes]
     129 | __bpf_kfunc const char *bpf_arch_flags(enum arch_flags_type t, int i)
         |                         ^~~~~~~~~~~~~~


vim +/bpf_arch_flags +129 arch/x86/kernel/cpu/bpf-rvi.c

   128	
 > 129	__bpf_kfunc const char *bpf_arch_flags(enum arch_flags_type t, int i)
   130	{
   131		switch (t) {
   132		case X86_CAP:
   133			return x86_cap_flags[i];
   134		case X86_BUG:
   135			return x86_bug_flags[i];
   136		case X86_POWER:
   137			return x86_power_flags[i];
   138		case X86_POWER_SIZE:
   139			return (void *)ARRAY_SIZE(x86_power_flags);
   140		default:
   141			return NULL;
   142		}
   143	}
   144	

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