On Wed, Jun 14, 2023 at 07:39:01PM +0800, kernel test robot wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master > head: b16049b21162bb649cdd8519642a35972b7910fe > commit: df8fa2f1fc4c20cd300855a11b31ba5565f45ac6 [7890/9793] rcuscale: Measure RCU Tasks Trace grace-period kthread CPU time > config: arm-randconfig-r046-20230614 (https://download.01.org/0day-ci/archive/20230614/202306141920.TTvpsXwJ-lkp@xxxxxxxxx/config) > compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project.git 4a5ac14ee968ff0ad5d2cc1ffa0299048db4c88a) > reproduce (this is a W=1 build): > mkdir -p ~/bin > wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross > chmod +x ~/bin/make.cross > # install arm cross compiling tool for clang build > # apt-get install binutils-arm-linux-gnueabi > # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=df8fa2f1fc4c20cd300855a11b31ba5565f45ac6 > git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git > git fetch --no-tags linux-next master > git checkout df8fa2f1fc4c20cd300855a11b31ba5565f45ac6 > # save the config file > mkdir build_dir && cp config build_dir/.config > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang ~/bin/make.cross W=1 O=build_dir ARCH=arm olddefconfig > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang ~/bin/make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash kernel/ > > If you fix the issue in a separate patch/commit (i.e. not just a new version of > the same patch/commit), kindly add following tags > | Reported-by: kernel test robot <lkp@xxxxxxxxx> > | Closes: https://lore.kernel.org/oe-kbuild-all/202306141920.TTvpsXwJ-lkp@xxxxxxxxx/ > > All error/warnings (new ones prefixed by >>): > > >> kernel/rcu/rcuscale.c:301:20: error: use of undeclared identifier 'get_rcu_tasks_gp_kthread'; did you mean 'get_rcu_tasks_trace_gp_kthread'? > 301 | .rso_gp_kthread = get_rcu_tasks_gp_kthread, > | ^~~~~~~~~~~~~~~~~~~~~~~~ > | get_rcu_tasks_trace_gp_kthread > include/linux/rcupdate_trace.h:90:21: note: 'get_rcu_tasks_trace_gp_kthread' declared here > 90 | struct task_struct *get_rcu_tasks_trace_gp_kthread(void); > | ^ > 1 error generated. > -- > In file included from kernel/rcu/update.c:649: > >> kernel/rcu/tasks.h:1113:21: warning: no previous prototype for function 'get_rcu_tasks_gp_kthread' [-Wmissing-prototypes] > 1113 | struct task_struct *get_rcu_tasks_gp_kthread(void) > | ^ > kernel/rcu/tasks.h:1113:1: note: declare 'static' if the function is not intended to be used outside of this translation unit > 1113 | struct task_struct *get_rcu_tasks_gp_kthread(void) > | ^ > | static > 1 warning generated. This should be fixed by these two commits in -rcu's "dev" branch: df8fa2f1fc4c ("rcuscale: Measure RCU Tasks Trace grace-period kthread CPU time") (Which replaced the commit tested.) a88fd06db226 ("rcuscale: fix building with RCU_TINY") Please let me know if there are still problems after these commits are in place. Thanx, Paul > vim +301 kernel/rcu/rcuscale.c > > 289 > 290 static struct rcu_scale_ops tasks_ops = { > 291 .ptype = RCU_TASKS_FLAVOR, > 292 .init = rcu_sync_scale_init, > 293 .readlock = tasks_scale_read_lock, > 294 .readunlock = tasks_scale_read_unlock, > 295 .get_gp_seq = rcu_no_completed, > 296 .gp_diff = rcu_seq_diff, > 297 .async = call_rcu_tasks, > 298 .gp_barrier = rcu_barrier_tasks, > 299 .sync = synchronize_rcu_tasks, > 300 .exp_sync = synchronize_rcu_tasks, > > 301 .rso_gp_kthread = get_rcu_tasks_gp_kthread, > 302 .name = "tasks" > 303 }; > 304 > > -- > 0-DAY CI Kernel Test Service > https://github.com/intel/lkp-tests/wiki
