[linuxsecuritymodule:next 2/2] include/linux/security.h:2379:12: warning: no previous prototype for function 'security_uring_allowed'

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

tree:   https://github.com/LinuxSecurityModule/kernel next
head:   c6ad9fdbd44b78f51fa50138247694774ab99e97
commit: c6ad9fdbd44b78f51fa50138247694774ab99e97 [2/2] io_uring,lsm,selinux: add LSM hooks for io_uring_setup()
config: x86_64-allnoconfig (https://download.01.org/0day-ci/archive/20250208/202502081912.TeokpAAe-lkp@intel.com/config)
compiler: clang version 19.1.3 (https://github.com/llvm/llvm-project ab51eccf88f5321e7c60591c5546b254b6afab99)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250208/202502081912.TeokpAAe-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/202502081912.TeokpAAe-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from arch/x86/kernel/apic/apic.c:18:
   In file included from include/linux/perf_event.h:62:
>> include/linux/security.h:2379:12: warning: no previous prototype for function 'security_uring_allowed' [-Wmissing-prototypes]
    2379 | extern int security_uring_allowed(void)
         |            ^
   include/linux/security.h:2379:8: note: declare 'static' if the function is not intended to be used outside of this translation unit
    2379 | extern int security_uring_allowed(void)
         |        ^
   arch/x86/kernel/apic/apic.c:1889:20: warning: unused function '__x2apic_enable' [-Wunused-function]
    1889 | static inline void __x2apic_enable(void) { }
         |                    ^~~~~~~~~~~~~~~
   2 warnings generated.
--
   In file included from arch/x86/kernel/apic/vector.c:18:
   In file included from arch/x86/include/asm/traps.h:9:
   In file included from arch/x86/include/asm/idtentry.h:11:
   In file included from include/linux/entry-common.h:7:
   In file included from include/linux/syscalls.h:94:
   In file included from include/trace/syscall.h:7:
   In file included from include/linux/trace_events.h:10:
   In file included from include/linux/perf_event.h:62:
>> include/linux/security.h:2379:12: warning: no previous prototype for function 'security_uring_allowed' [-Wmissing-prototypes]
    2379 | extern int security_uring_allowed(void)
         |            ^
   include/linux/security.h:2379:8: note: declare 'static' if the function is not intended to be used outside of this translation unit
    2379 | extern int security_uring_allowed(void)
         |        ^
   1 warning generated.


vim +/security_uring_allowed +2379 include/linux/security.h

  2359	
  2360	#ifdef CONFIG_IO_URING
  2361	#ifdef CONFIG_SECURITY
  2362	extern int security_uring_override_creds(const struct cred *new);
  2363	extern int security_uring_sqpoll(void);
  2364	extern int security_uring_cmd(struct io_uring_cmd *ioucmd);
  2365	extern int security_uring_allowed(void);
  2366	#else
  2367	static inline int security_uring_override_creds(const struct cred *new)
  2368	{
  2369		return 0;
  2370	}
  2371	static inline int security_uring_sqpoll(void)
  2372	{
  2373		return 0;
  2374	}
  2375	static inline int security_uring_cmd(struct io_uring_cmd *ioucmd)
  2376	{
  2377		return 0;
  2378	}
> 2379	extern int security_uring_allowed(void)
  2380	{
  2381		return 0;
  2382	}
  2383	#endif /* CONFIG_SECURITY */
  2384	#endif /* CONFIG_IO_URING */
  2385	

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