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Date: Thu, 27 Aug 2020 15:36:14 -0700 From: "Paul E. McKenney" <paulmck@...nel.org> To: kernel test robot <lkp@...el.com> Cc: kbuild-all@...ts.01.org, clang-built-linux@...glegroups.com, linux-kernel@...r.kernel.org Subject: Re: [rcu:rcu/next 10/11] kernel/rcu/tasks.h:594:20: error: static declaration of 'exit_tasks_rcu_start' follows non-static declaration On Fri, Aug 28, 2020 at 03:45:13AM +0800, kernel test robot wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git rcu/next > head: 2ec296bd21c79b080bd6b3fb143122f18440d930 > commit: 8c8942d72e9bf1e19b6af0a8df4c7f44d2d384c0 [10/11] rcu-tasks: Prevent complaints of unused show_rcu_tasks_classic_gp_kthread() > config: x86_64-randconfig-a014-20200827 (attached as .config) > compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 71f3169e1baeff262583b35ef88f8fb6df7be85e) > 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 > # install x86_64 cross compiling tool for clang build > # apt-get install binutils-x86-64-linux-gnu > git checkout 8c8942d72e9bf1e19b6af0a8df4c7f44d2d384c0 > # 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 <lkp@...el.com> > > All errors (new ones prefixed by >>): > > In file included from kernel/rcu/update.c:578: > >> kernel/rcu/tasks.h:594:20: error: static declaration of 'exit_tasks_rcu_start' follows non-static declaration > static inline void exit_tasks_rcu_start(void) { } > ^ > include/linux/rcupdate.h:181:6: note: previous declaration is here > void exit_tasks_rcu_start(void); > ^ > In file included from kernel/rcu/update.c:578: > >> kernel/rcu/tasks.h:595:20: error: static declaration of 'exit_tasks_rcu_finish' follows non-static declaration > static inline void exit_tasks_rcu_finish(void) { exit_tasks_rcu_finish_trace(current); } > ^ > include/linux/rcupdate.h:182:6: note: previous declaration is here > void exit_tasks_rcu_finish(void); > ^ > 2 errors generated. Good catch, alleged fix folded into this commit. Thanx, Paul > # https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git/commit/?id=8c8942d72e9bf1e19b6af0a8df4c7f44d2d384c0 > git remote add rcu https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git > git fetch --no-tags rcu rcu/next > git checkout 8c8942d72e9bf1e19b6af0a8df4c7f44d2d384c0 > vim +/exit_tasks_rcu_start +594 kernel/rcu/tasks.h > > 591 > 592 #else /* #ifdef CONFIG_TASKS_RCU */ > 593 static inline void show_rcu_tasks_classic_gp_kthread(void) { } > > 594 static inline void exit_tasks_rcu_start(void) { } > > 595 static inline void exit_tasks_rcu_finish(void) { exit_tasks_rcu_finish_trace(current); } > 596 #endif /* #else #ifdef CONFIG_TASKS_RCU */ > 597 > > --- > 0-DAY CI Kernel Test Service, Intel Corporation > https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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