On Tue, Apr 20, 2021 at 02:56:30PM +0800, kernel test robot wrote:
> Hi Paul,
>
> FYI, the error/warning still remains.
>
> tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
> master
> head: 7af08140979a6e7e12b78c93b8625c8d25b084e2
> commit: e21408ceec2de5be418efa39feb1e2c00f824a72 rcu-tasks: Add RCU tasks to
> rcutorture writer stall output
> date: 12 months ago
> config: h8300-allnoconfig (attached as .config)
> compiler: h8300-linux-gcc (GCC) 9.3.0
> 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/torvalds/linux.git/commit/?id=e21408ceec2de5be418efa39feb1e2c00f824a72
> git remote add linus
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
> git fetch --no-tags linus master
> git checkout e21408ceec2de5be418efa39feb1e2c00f824a72
> # save the attached .config to linux build tree
> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross W=1
> ARCH=h8300
>
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <l...@intel.com>
Good catch, fixed with attribution by adding "static inline".
Thanx, Paul
> All warnings (new ones prefixed by >>):
>
> In file included from kernel/rcu/update.c:587:
> >> kernel/rcu/tasks.h:1031:6: warning: no previous prototype for
> >> 'show_rcu_tasks_gp_kthreads' [-Wmissing-prototypes]
> 1031 | void show_rcu_tasks_gp_kthreads(void) {}
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~
>
>
> vim +/show_rcu_tasks_gp_kthreads +1031 kernel/rcu/tasks.h
>
> 1028
> 1029 #else /* #ifdef CONFIG_TASKS_RCU_GENERIC */
> 1030 static inline void rcu_tasks_bootup_oddness(void) {}
> > 1031 void show_rcu_tasks_gp_kthreads(void) {}
>
> ---
> 0-DAY CI Kernel Test Service, Intel Corporation
> https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org
