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

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Message-ID: <202210140453.BYfUhVyo-lkp@intel.com>
Date:   Fri, 14 Oct 2022 04:23:19 +0800
From:   kernel test robot <lkp@...el.com>
To:     Mark Rutland <mark.rutland@....com>
Cc:     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
 '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: parisc-allyesconfig
compiler: hppa-linux-gcc (GCC) 12.1.0
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=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=parisc 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 '__register_ftrace_function' [-Wmissing-prototypes]
     299 | int __register_ftrace_function(struct ftrace_ops *ops)
         |     ^~~~~~~~~~~~~~~~~~~~~~~~~~
   kernel/trace/ftrace.c:342:5: warning: no previous prototype for '__unregister_ftrace_function' [-Wmissing-prototypes]
     342 | int __unregister_ftrace_function(struct ftrace_ops *ops)
         |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> kernel/trace/ftrace.c:2326:1: warning: no previous prototype for 'ftrace_find_ops_any' [-Wmissing-prototypes]
    2326 | ftrace_find_ops_any(struct dyn_ftrace *rec)
         | ^~~~~~~~~~~~~~~~~~~
   kernel/trace/ftrace.c:4053:15: warning: no previous prototype for 'arch_ftrace_match_adjust' [-Wmissing-prototypes]
    4053 | char * __weak arch_ftrace_match_adjust(char *str, const char *search)
         |               ^~~~~~~~~~~~~~~~~~~~~~~~
   kernel/trace/ftrace.c:4513:1: warning: 'text_section' attribute directive ignored [-Wattributes]
    4513 | core_initcall(ftrace_mod_cmd_init);
         | ^~~~~~~~~~~~~
   kernel/trace/ftrace.c:8483:1: warning: 'text_section' attribute directive ignored [-Wattributes]
    8483 | late_initcall(ftrace_sysctl_init);
         | ^~~~~~~~~~~~~


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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