[jsarha:topic/chromeos-4.19-s0ix 9206/9999] kernel/gcov/clang.c:221:9: error: implicit declaration of function 'within_module'

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

tree:   https://github.com/jsarha/linux topic/chromeos-4.19-s0ix
head:   430bdaa0a8c38697780f45a148964d71951df11f
commit: 35be48648a6552869bd5d6c9a0d278102d23d46c [9206/9999] UPSTREAM: gcov: clang support
config: x86_64-buildonly-randconfig-004-20240122 (https://download.01.org/0day-ci/archive/20240123/202401230353.Rzf6chZz-lkp@intel.com/config)
compiler: ClangBuiltLinux clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240123/202401230353.Rzf6chZz-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/202401230353.Rzf6chZz-lkp@intel.com/

All errors (new ones prefixed by >>):

   kernel/gcov/clang.c:85:6: warning: no previous prototype for function 'llvm_gcov_init' [-Wmissing-prototypes]
      85 | void llvm_gcov_init(llvm_gcov_callback writeout, llvm_gcov_callback flush)
         |      ^
   kernel/gcov/clang.c:85:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
      85 | void llvm_gcov_init(llvm_gcov_callback writeout, llvm_gcov_callback flush)
         | ^
         | static 
   kernel/gcov/clang.c:108:6: warning: no previous prototype for function 'llvm_gcda_start_file' [-Wmissing-prototypes]
     108 | void llvm_gcda_start_file(const char *orig_filename, const char version[4],
         |      ^
   kernel/gcov/clang.c:108:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
     108 | void llvm_gcda_start_file(const char *orig_filename, const char version[4],
         | ^
         | static 
   kernel/gcov/clang.c:117:6: warning: no previous prototype for function 'llvm_gcda_emit_function' [-Wmissing-prototypes]
     117 | void llvm_gcda_emit_function(u32 ident, const char *function_name,
         |      ^
   kernel/gcov/clang.c:117:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
     117 | void llvm_gcda_emit_function(u32 ident, const char *function_name,
         | ^
         | static 
   kernel/gcov/clang.c:137:6: warning: no previous prototype for function 'llvm_gcda_emit_arcs' [-Wmissing-prototypes]
     137 | void llvm_gcda_emit_arcs(u32 num_counters, u64 *counters)
         |      ^
   kernel/gcov/clang.c:137:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
     137 | void llvm_gcda_emit_arcs(u32 num_counters, u64 *counters)
         | ^
         | static 
   kernel/gcov/clang.c:147:6: warning: no previous prototype for function 'llvm_gcda_summary_info' [-Wmissing-prototypes]
     147 | void llvm_gcda_summary_info(void)
         |      ^
   kernel/gcov/clang.c:147:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
     147 | void llvm_gcda_summary_info(void)
         | ^
         | static 
   kernel/gcov/clang.c:152:6: warning: no previous prototype for function 'llvm_gcda_end_file' [-Wmissing-prototypes]
     152 | void llvm_gcda_end_file(void)
         |      ^
   kernel/gcov/clang.c:152:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
     152 | void llvm_gcda_end_file(void)
         | ^
         | static 
>> kernel/gcov/clang.c:221:9: error: implicit declaration of function 'within_module' [-Werror,-Wimplicit-function-declaration]
     221 |         return within_module((unsigned long)info->filename, mod);
         |                ^
   kernel/gcov/clang.c:221:9: note: did you mean 'init_module'?
   include/linux/module.h:75:12: note: 'init_module' declared here
      75 | extern int init_module(void);
         |            ^
   6 warnings and 1 error generated.


vim +/within_module +221 kernel/gcov/clang.c

   211	
   212	/**
   213	 * gcov_info_within_module - check if a profiling data set belongs to a module
   214	 * @info: profiling data set
   215	 * @mod: module
   216	 *
   217	 * Returns true if profiling data belongs module, false otherwise.
   218	 */
   219	bool gcov_info_within_module(struct gcov_info *info, struct module *mod)
   220	{
 > 221		return within_module((unsigned long)info->filename, mod);
   222	}
   223	

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