tree: https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev.2021.04.02a head: 4bc4fd6b7e87ff0bdb1aa2493af85be2784717c0 commit: 4bc4fd6b7e87ff0bdb1aa2493af85be2784717c0 [73/73] rcu: Fix RCU priority boosting and add more debug output config: sparc-randconfig-p001-20210407 (attached as .config) compiler: sparc64-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/paulmck/linux-rcu.git/commit/?id=4bc4fd6b7e87ff0bdb1aa2493af85be2784717c0 git remote add rcu https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git git fetch --no-tags rcu dev.2021.04.02a git checkout 4bc4fd6b7e87ff0bdb1aa2493af85be2784717c0 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=sparc
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <[email protected]> All warnings (new ones prefixed by >>): In file included from kernel/rcu/tree.c:65: >> kernel/rcu/tree.h:420:13: warning: 'rcu_spawn_one_boost_kthread' used but >> never defined 420 | static void rcu_spawn_one_boost_kthread(struct rcu_node *rnp); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +/rcu_spawn_one_boost_kthread +420 kernel/rcu/tree.h 404 405 /* Forward declarations for tree_plugin.h */ 406 static void rcu_bootup_announce(void); 407 static void rcu_qs(void); 408 static int rcu_preempt_blocked_readers_cgp(struct rcu_node *rnp); 409 #ifdef CONFIG_HOTPLUG_CPU 410 static bool rcu_preempt_has_tasks(struct rcu_node *rnp); 411 #endif /* #ifdef CONFIG_HOTPLUG_CPU */ 412 static int rcu_print_task_exp_stall(struct rcu_node *rnp); 413 static void rcu_preempt_check_blocked_tasks(struct rcu_node *rnp); 414 static void rcu_flavor_sched_clock_irq(int user); 415 static void dump_blkd_tasks(struct rcu_node *rnp, int ncheck); 416 static void rcu_initiate_boost(struct rcu_node *rnp, unsigned long flags); 417 static void rcu_preempt_boost_start_gp(struct rcu_node *rnp); 418 static bool rcu_is_callbacks_kthread(void); 419 static void rcu_cpu_kthread_setup(unsigned int cpu); > 420 static void rcu_spawn_one_boost_kthread(struct rcu_node *rnp); 421 static void __init rcu_spawn_boost_kthreads(void); 422 static void rcu_prepare_kthreads(int cpu); 423 static void rcu_cleanup_after_idle(void); 424 static void rcu_prepare_for_idle(void); 425 static bool rcu_preempt_has_tasks(struct rcu_node *rnp); 426 static bool rcu_preempt_need_deferred_qs(struct task_struct *t); 427 static void rcu_preempt_deferred_qs(struct task_struct *t); 428 static void zero_cpu_stall_ticks(struct rcu_data *rdp); 429 static struct swait_queue_head *rcu_nocb_gp_get(struct rcu_node *rnp); 430 static void rcu_nocb_gp_cleanup(struct swait_queue_head *sq); 431 static void rcu_init_one_nocb(struct rcu_node *rnp); 432 static bool rcu_nocb_flush_bypass(struct rcu_data *rdp, struct rcu_head *rhp, 433 unsigned long j); 434 static bool rcu_nocb_try_bypass(struct rcu_data *rdp, struct rcu_head *rhp, 435 bool *was_alldone, unsigned long flags); 436 static void __call_rcu_nocb_wake(struct rcu_data *rdp, bool was_empty, 437 unsigned long flags); 438 static int rcu_nocb_need_deferred_wakeup(struct rcu_data *rdp, int level); 439 static bool do_nocb_deferred_wakeup(struct rcu_data *rdp); 440 static void rcu_boot_init_nocb_percpu_data(struct rcu_data *rdp); 441 static void rcu_spawn_cpu_nocb_kthread(int cpu); 442 static void __init rcu_spawn_nocb_kthreads(void); 443 static void show_rcu_nocb_state(struct rcu_data *rdp); 444 static void rcu_nocb_lock(struct rcu_data *rdp); 445 static void rcu_nocb_unlock(struct rcu_data *rdp); 446 static void rcu_nocb_unlock_irqrestore(struct rcu_data *rdp, 447 unsigned long flags); 448 static void rcu_lockdep_assert_cblist_protected(struct rcu_data *rdp); 449 #ifdef CONFIG_RCU_NOCB_CPU 450 static void __init rcu_organize_nocb_kthreads(void); 451 #define rcu_nocb_lock_irqsave(rdp, flags) \ 452 do { \ 453 if (!rcu_segcblist_is_offloaded(&(rdp)->cblist)) \ 454 local_irq_save(flags); \ 455 else \ 456 raw_spin_lock_irqsave(&(rdp)->nocb_lock, (flags)); \ 457 } while (0) 458 #else /* #ifdef CONFIG_RCU_NOCB_CPU */ 459 #define rcu_nocb_lock_irqsave(rdp, flags) local_irq_save(flags) 460 #endif /* #else #ifdef CONFIG_RCU_NOCB_CPU */ 461 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/[email protected]
.config.gz
Description: application/gzip
