Message-ID: <202110140709.ogqbzDcq-lkp@intel.com>
Date:   Thu, 14 Oct 2021 07:33:21 +0800
From:   kernel test robot <lkp@...el.com>
To:     "Gustavo A. R. Silva" <gustavoars@...nel.org>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        "Gustavo A. R. Silva" <gustavo@...eddedor.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Steven Rostedt <rostedt@...dmis.org>
Subject: [gustavoars:for-next/cast-function 1/3]
 kernel/trace/ftrace.c:7029:6: error: no previous prototype for function
 'arch_ftrace_ops_list_func'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux.git for-next/cast-function
head:   eed09ebd6f47aeb92b3fe3b8d338b2a55e534928
commit: f9d45e65ef7f67bdb39c15d09bc6021f197d893e [1/3] ftrace: Fix -Wcast-function-type warnings on powerpc64
config: i386-buildonly-randconfig-r002-20211013 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project b6a8c695542b2987eb9a203d5663a0740cb4725f)
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/gustavoars/linux.git/commit/?id=f9d45e65ef7f67bdb39c15d09bc6021f197d893e
        git remote add gustavoars https://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux.git
        git fetch --no-tags gustavoars for-next/cast-function
        git checkout f9d45e65ef7f67bdb39c15d09bc6021f197d893e
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=i386 

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

All errors (new ones prefixed by >>):

   kernel/trace/ftrace.c:297:5: error: no previous prototype for function '__register_ftrace_function' [-Werror,-Wmissing-prototypes]
   int __register_ftrace_function(struct ftrace_ops *ops)
       ^
   kernel/trace/ftrace.c:297:1: 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:340:5: error: no previous prototype for function '__unregister_ftrace_function' [-Werror,-Wmissing-prototypes]
   int __unregister_ftrace_function(struct ftrace_ops *ops)
       ^
   kernel/trace/ftrace.c:340:1: 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:579:5: error: no previous prototype for function 'ftrace_profile_pages_init' [-Werror,-Wmissing-prototypes]
   int ftrace_profile_pages_init(struct ftrace_profile_stat *stat)
       ^
   kernel/trace/ftrace.c:579:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   int ftrace_profile_pages_init(struct ftrace_profile_stat *stat)
   ^
   static 
   kernel/trace/ftrace.c:3871:15: error: no previous prototype for function 'arch_ftrace_match_adjust' [-Werror,-Wmissing-prototypes]
   char * __weak arch_ftrace_match_adjust(char *str, const char *search)
                 ^
   kernel/trace/ftrace.c:3871:1: 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 
>> kernel/trace/ftrace.c:7029:6: error: no previous prototype for function 'arch_ftrace_ops_list_func' [-Werror,-Wmissing-prototypes]
   void arch_ftrace_ops_list_func(unsigned long ip, unsigned long parent_ip,
        ^
   kernel/trace/ftrace.c:7029:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void arch_ftrace_ops_list_func(unsigned long ip, unsigned long parent_ip,
   ^
   static 
   5 errors generated.


vim +/arch_ftrace_ops_list_func +7029 kernel/trace/ftrace.c

  7011	
  7012	/*
  7013	 * Some archs only support passing ip and parent_ip. Even though
  7014	 * the list function ignores the op parameter, we do not want any
  7015	 * C side effects, where a function is called without the caller
  7016	 * sending a third parameter.
  7017	 * Archs are to support both the regs and ftrace_ops at the same time.
  7018	 * If they support ftrace_ops, it is assumed they support regs.
  7019	 * If call backs want to use regs, they must either check for regs
  7020	 * being NULL, or CONFIG_DYNAMIC_FTRACE_WITH_REGS.
  7021	 * Note, CONFIG_DYNAMIC_FTRACE_WITH_REGS expects a full regs to be saved.
  7022	 * An architecture can pass partial regs with ftrace_ops and still
  7023	 * set the ARCH_SUPPORTS_FTRACE_OPS.
  7024	 *
  7025	 * In vmlinux.lds.h, ftrace_ops_list_func() is defined to be
  7026	 * arch_ftrace_ops_list_func.
  7027	 */
  7028	#if ARCH_SUPPORTS_FTRACE_OPS
> 7029	void arch_ftrace_ops_list_func(unsigned long ip, unsigned long parent_ip,
  7030				       struct ftrace_ops *op, struct ftrace_regs *fregs)
  7031	{
  7032		__ftrace_ops_list_func(ip, parent_ip, NULL, fregs);
  7033	}
  7034	#else
  7035	void arch_ftrace_ops_list_func(unsigned long ip, unsigned long parent_ip)
  7036	{
  7037		__ftrace_ops_list_func(ip, parent_ip, NULL, NULL);
  7038	}
  7039	#endif
  7040	NOKPROBE_SYMBOL(arch_ftrace_ops_list_func);
  7041	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

Download attachment ".config.gz" of type "application/gzip" (37038 bytes)

Powered by blists - more mailing lists