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Subject[rcu:dev.2020.03.03b 43/45] kernel/rcu/update.c:583:2: error: implicit declaration of function 'rcu_tasks_bootup_oddness'
tree:   https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev.2020.03.03b
head: 647c0bb2da5c14b25d27661fa93de7fca9042daf
commit: d060bd985c4d160df31659a80cf5fabe1cd508b4 [43/45] rcu-tasks: Refactor RCU-tasks to allow variants to be added
config: openrisc-simple_smp_defconfig (attached as .config)
compiler: or1k-linux-gcc (GCC) 9.2.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout d060bd985c4d160df31659a80cf5fabe1cd508b4
# save the attached .config to linux build tree
GCC_VERSION=9.2.0 make.cross ARCH=openrisc

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

kernel/rcu/update.c: In function 'rcupdate_announce_bootup_oddness':
>> kernel/rcu/update.c:583:2: error: implicit declaration of function 'rcu_tasks_bootup_oddness' [-Werror=implicit-function-declaration]
583 | rcu_tasks_bootup_oddness();
| ^~~~~~~~~~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors

vim +/rcu_tasks_bootup_oddness +583 kernel/rcu/update.c

59d80fd8351b7b Paul E. McKenney 2017-04-28 567
59d80fd8351b7b Paul E. McKenney 2017-04-28 568 /*
59d80fd8351b7b Paul E. McKenney 2017-04-28 569 * Print any significant non-default boot-time settings.
59d80fd8351b7b Paul E. McKenney 2017-04-28 570 */
59d80fd8351b7b Paul E. McKenney 2017-04-28 571 void __init rcupdate_announce_bootup_oddness(void)
59d80fd8351b7b Paul E. McKenney 2017-04-28 572 {
59d80fd8351b7b Paul E. McKenney 2017-04-28 573 if (rcu_normal)
59d80fd8351b7b Paul E. McKenney 2017-04-28 574 pr_info("\tNo expedited grace period (rcu_normal).\n");
59d80fd8351b7b Paul E. McKenney 2017-04-28 575 else if (rcu_normal_after_boot)
59d80fd8351b7b Paul E. McKenney 2017-04-28 576 pr_info("\tNo expedited grace period (rcu_normal_after_boot).\n");
59d80fd8351b7b Paul E. McKenney 2017-04-28 577 else if (rcu_expedited)
59d80fd8351b7b Paul E. McKenney 2017-04-28 578 pr_info("\tAll grace periods are expedited (rcu_expedited).\n");
59d80fd8351b7b Paul E. McKenney 2017-04-28 579 if (rcu_cpu_stall_suppress)
59d80fd8351b7b Paul E. McKenney 2017-04-28 580 pr_info("\tRCU CPU stall warnings suppressed (rcu_cpu_stall_suppress).\n");
59d80fd8351b7b Paul E. McKenney 2017-04-28 581 if (rcu_cpu_stall_timeout != CONFIG_RCU_CPU_STALL_TIMEOUT)
59d80fd8351b7b Paul E. McKenney 2017-04-28 582 pr_info("\tRCU CPU stall warnings timeout set to %d (rcu_cpu_stall_timeout).\n", rcu_cpu_stall_timeout);
59d80fd8351b7b Paul E. McKenney 2017-04-28 @583 rcu_tasks_bootup_oddness();
59d80fd8351b7b Paul E. McKenney 2017-04-28 584 }
59d80fd8351b7b Paul E. McKenney 2017-04-28 585

:::::: The code at line 583 was first introduced by commit
:::::: 59d80fd8351b7b9a5dc7bbfa8bc4ca19f6ff3dad rcu: Print out rcupdate.c non-default boot-time settings

:::::: TO: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
:::::: CC: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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