linux-kernel - [mark:arm64/ftrace/per-callsite-ops 9/10] kernel/trace/ftrace.c:2326:1: warning: no previous prototype for function 'ftrace_find_ops

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Message-ID: <202210141301.ziOnd9tE-lkp@intel.com>
Date:   Fri, 14 Oct 2022 13:59:10 +0800
From:   kernel test robot <lkp@...el.com>
To:     Mark Rutland <mark.rutland@....com>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org
Subject: [mark:arm64/ftrace/per-callsite-ops 9/10]
 kernel/trace/ftrace.c:2326:1: warning: no previous prototype for function
 'ftrace_find_ops_any'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git arm64/ftrace/per-callsite-ops
head:   6a9b9a69092588f97ba9a8486fd33b5c54bf3a8c
commit: 5e5f06a01f95fd00fa8f41603141ca63b08166bc [9/10] HAXX: basically working
config: x86_64-randconfig-a012
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git/commit/?id=5e5f06a01f95fd00fa8f41603141ca63b08166bc
        git remote add mark https://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git
        git fetch --no-tags mark arm64/ftrace/per-callsite-ops
        git checkout 5e5f06a01f95fd00fa8f41603141ca63b08166bc
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash kernel/trace/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>

All warnings (new ones prefixed by >>):

   kernel/trace/ftrace.c:299:5: warning: no previous prototype for function '__register_ftrace_function' [-Wmissing-prototypes]
   int __register_ftrace_function(struct ftrace_ops *ops)
       ^
   kernel/trace/ftrace.c:299:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   int __register_ftrace_function(struct ftrace_ops *ops)
   ^
   static 
   kernel/trace/ftrace.c:342:5: warning: no previous prototype for function '__unregister_ftrace_function' [-Wmissing-prototypes]
   int __unregister_ftrace_function(struct ftrace_ops *ops)
       ^
   kernel/trace/ftrace.c:342:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   int __unregister_ftrace_function(struct ftrace_ops *ops)
   ^
   static 
>> kernel/trace/ftrace.c:2326:1: warning: no previous prototype for function 'ftrace_find_ops_any' [-Wmissing-prototypes]
   ftrace_find_ops_any(struct dyn_ftrace *rec)
   ^
   kernel/trace/ftrace.c:2325:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   struct ftrace_ops *
   ^
   static 
   kernel/trace/ftrace.c:4053:15: warning: no previous prototype for function 'arch_ftrace_match_adjust' [-Wmissing-prototypes]
   char * __weak arch_ftrace_match_adjust(char *str, const char *search)
                 ^
   kernel/trace/ftrace.c:4053:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   char * __weak arch_ftrace_match_adjust(char *str, const char *search)
   ^
   static 
   4 warnings generated.


vim +/ftrace_find_ops_any +2326 kernel/trace/ftrace.c

  2324	
  2325	struct ftrace_ops *
> 2326	ftrace_find_ops_any(struct dyn_ftrace *rec)
  2327	{
  2328		struct ftrace_ops *op;
  2329		unsigned long ip = rec->ip;
  2330	
  2331		do_for_each_ftrace_op(op, ftrace_ops_list) {
  2332	
  2333			if (hash_contains_ip(ip, op->func_hash))
  2334				return op;
  2335		} while_for_each_ftrace_op(op);
  2336	
  2337		return NULL;
  2338	}
  2339	struct ftrace_ops *
  2340	ftrace_find_tramp_ops_any(struct dyn_ftrace *rec)
  2341	{
  2342		struct ftrace_ops *op;
  2343		unsigned long ip = rec->ip;
  2344	
  2345		do_for_each_ftrace_op(op, ftrace_ops_list) {
  2346	
  2347			if (!op->trampoline)
  2348				continue;
  2349	
  2350			if (hash_contains_ip(ip, op->func_hash))
  2351				return op;
  2352		} while_for_each_ftrace_op(op);
  2353	
  2354		return NULL;
  2355	}
  2356	

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp

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