[jfern:rcu/rcutop 1/1] kernel/rcu/debug.h:162:5: warning: no previous prototype for function 'rcu_debug_ptr_queue'

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

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/jfern/linux.git rcu/rcutop
head:   43245eb952b4ea3ac722e0b1cd3c9fcc4bc35a38
commit: 561427c949299c3f6b3a42b5fa4b035aa5bb419a [1/1] debug: dynamic lazy wake debug
config: x86_64-randconfig-a014 (https://download.01.org/0day-ci/archive/20230225/202302250502.V09VH4JS-lkp@intel.com/config)
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/jfern/linux.git/commit/?id=561427c949299c3f6b3a42b5fa4b035aa5bb419a
        git remote add jfern https://git.kernel.org/pub/scm/linux/kernel/git/jfern/linux.git
        git fetch --no-tags jfern rcu/rcutop
        git checkout 561427c949299c3f6b3a42b5fa4b035aa5bb419a
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash kernel/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202302250502.V09VH4JS-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from kernel/rcu/tree.c:70:
>> kernel/rcu/debug.h:162:5: warning: no previous prototype for function 'rcu_debug_ptr_queue' [-Wmissing-prototypes]
   int rcu_debug_ptr_queue(struct rcu_data *rdp, void* ip_ptr)
       ^
   kernel/rcu/debug.h:162:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   int rcu_debug_ptr_queue(struct rcu_data *rdp, void* ip_ptr)
   ^
   static 
   kernel/rcu/debug.h:167:6: warning: no previous prototype for function 'rcu_debug_set_context' [-Wmissing-prototypes]
   void rcu_debug_set_context(struct rcu_data *rdp, void *ip_ptr)
        ^
   kernel/rcu/debug.h:167:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void rcu_debug_set_context(struct rcu_data *rdp, void *ip_ptr)
   ^
   static 
   kernel/rcu/debug.h:171:6: warning: no previous prototype for function 'rcu_debug_reset_context' [-Wmissing-prototypes]
   void rcu_debug_reset_context(void)
        ^
   kernel/rcu/debug.h:171:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void rcu_debug_reset_context(void)
   ^
   static 
   kernel/rcu/debug.h:175:6: warning: no previous prototype for function 'rcu_debug_init' [-Wmissing-prototypes]
   void rcu_debug_init(void)
        ^
   kernel/rcu/debug.h:175:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void rcu_debug_init(void)
   ^
   static 
   kernel/rcu/tree.c:2204:8: error: implicit declaration of function 'rcu_debug_ptr_unqueue' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
           ret = rcu_debug_ptr_unqueue(rdp, ip);
                 ^
   kernel/rcu/tree.c:2204:8: note: did you mean 'rcu_debug_ptr_queue'?
   kernel/rcu/debug.h:162:5: note: 'rcu_debug_ptr_queue' declared here
   int rcu_debug_ptr_queue(struct rcu_data *rdp, void* ip_ptr)
       ^
   kernel/rcu/tree.c:2204:6: error: assigning to 'rcu_debug_entry' from incompatible type 'int'
           ret = rcu_debug_ptr_unqueue(rdp, ip);
               ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> kernel/rcu/tree.c:2198:17: warning: no previous prototype for function 'rcu_debug_ptr_unqueue_lock' [-Wmissing-prototypes]
   rcu_debug_entry rcu_debug_ptr_unqueue_lock(struct rcu_data *rdp, void *ip)
                   ^
   kernel/rcu/tree.c:2198:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   rcu_debug_entry rcu_debug_ptr_unqueue_lock(struct rcu_data *rdp, void *ip)
   ^
   static 
   kernel/rcu/tree.c:2220:44: error: too many arguments to function call, expected 2, have 3
           WARN_ON_ONCE(rcu_debug_ptr_queue(rdp, ip, lazy));
                        ~~~~~~~~~~~~~~~~~~~          ^~~~
   include/asm-generic/bug.h:110:25: note: expanded from macro 'WARN_ON_ONCE'
           int __ret_warn_on = !!(condition);                      \
                                  ^~~~~~~~~
   kernel/rcu/debug.h:162:5: note: 'rcu_debug_ptr_queue' declared here
   int rcu_debug_ptr_queue(struct rcu_data *rdp, void* ip_ptr)
       ^
   kernel/rcu/tree.c:4440:17: error: implicit declaration of function 'rcu_debug_ptr_unqueue' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
                   WARN_ON_ONCE(!rcu_debug_ptr_unqueue(rdp, rh).valid);
                                 ^
   kernel/rcu/tree.c:4440:47: error: member reference base type 'int' is not a structure or union
                   WARN_ON_ONCE(!rcu_debug_ptr_unqueue(rdp, rh).valid);
                                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~
   include/asm-generic/bug.h:110:25: note: expanded from macro 'WARN_ON_ONCE'
           int __ret_warn_on = !!(condition);                      \
                                  ^~~~~~~~~
   kernel/rcu/tree.c:4912:8: error: no member named 'rcu_debug_ptrs' in 'struct rcu_data'
                   rdp->rcu_debug_ptrs[i].valid = false;
                   ~~~  ^
   kernel/rcu/tree.c:4913:8: error: no member named 'rcu_debug_ptrs' in 'struct rcu_data'
                   rdp->rcu_debug_ptrs[i].in_flight = false;
                   ~~~  ^
   5 warnings and 7 errors generated.


vim +/rcu_debug_ptr_queue +162 kernel/rcu/debug.h

   151	
   152	void rcu_debug_init(void)
   153	{
   154		int ret;
   155		pr_info("RCU Lazy CB debugging is turned on, system may be slow.\n");
   156	
   157		ret = register_trace_sched_waking(probe_waking, NULL);
   158		if (ret)
   159			pr_info("RCU: Lazy debug ched_waking probe could not be registered.");
   160	}
   161	#else
 > 162	int rcu_debug_ptr_queue(struct rcu_data *rdp, void* ip_ptr)
   163	{
   164		return -1;
   165	}
   166	

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