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* [linux-rt-devel:linux-5.13.y-rt-rebase 173/222] kernel/rcu/tasks.h:1298:6: warning: no previous prototype for function 'rcu_tasks_initiate_self_tests'
@ 2021-07-08 18:18 kernel test robot
  0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2021-07-08 18:18 UTC (permalink / raw)
  To: Sebastian Andrzej Siewior
  Cc: clang-built-linux, kbuild-all, linux-kernel, Thomas Gleixner

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tree: linux-5.13.y-rt-rebase
head:   7e175e6b59975c8901ad370f7818937f68de45c1
commit: 8abf1b2d2e8f61dc527e290e3cb83b0cf9fafef0 [173/222] rcu: Delay RCU-selftests
config: x86_64-randconfig-a015-20210707 (attached as .config)
compiler: clang version 13.0.0 ( 8d69635ed9ecf36fd0ca85906bfde17949671cbe)
reproduce (this is a W=1 build):
        wget -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install x86_64 cross compiling tool for clang build
        # apt-get install binutils-x86-64-linux-gnu
        git remote add linux-rt-devel
        git fetch --no-tags linux-rt-devel linux-5.13.y-rt-rebase
        git checkout 8abf1b2d2e8f61dc527e290e3cb83b0cf9fafef0
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 

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

All warnings (new ones prefixed by >>):

   In file included from kernel/rcu/update.c:580:
>> kernel/rcu/tasks.h:1298:6: warning: no previous prototype for function 'rcu_tasks_initiate_self_tests' [-Wmissing-prototypes]
   void rcu_tasks_initiate_self_tests(void)
   kernel/rcu/tasks.h:1298:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void rcu_tasks_initiate_self_tests(void)
   1 warning generated.

vim +/rcu_tasks_initiate_self_tests +1298 kernel/rcu/tasks.h

> 1298	void rcu_tasks_initiate_self_tests(void)
  1299	{
  1300		pr_info("Running RCU-tasks wait API self tests\n");
  1301	#ifdef CONFIG_TASKS_RCU
  1302		synchronize_rcu_tasks();
  1303		call_rcu_tasks(&tests[0].rh, test_rcu_tasks_callback);
  1304	#endif

0-DAY CI Kernel Test Service, Intel Corporation

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2021-07-08 18:18 [linux-rt-devel:linux-5.13.y-rt-rebase 173/222] kernel/rcu/tasks.h:1298:6: warning: no previous prototype for function 'rcu_tasks_initiate_self_tests' kernel test robot

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