[tip:tmp.tmp2 100/364] kernel/torture.c:741:5: error: implicit declaration of function 'cond_resched'; did you mean 'need_resched'?

From: kernel test robot
Date: Mon Jun 14 2021 - 03:45:56 EST


tree: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git tmp.tmp2
head: adcceb5eb7aee38e4a9c15bdf599655f0e1b1324
commit: 54617112331a4cc28268a4321eab5b38baba4d9f [100/364] sched/headers: Remove <linux/sched/cond_resched.h> inclusion from <linux/sched.h>
config: x86_64-rhel-8.3 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
# https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=54617112331a4cc28268a4321eab5b38baba4d9f
git remote add tip https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git
git fetch --no-tags tip tmp.tmp2
git checkout 54617112331a4cc28268a4321eab5b38baba4d9f
# save the attached .config to linux build tree
make W=1 ARCH=x86_64

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All errors (new ones prefixed by >>):

kernel/torture.c: In function 'stutter_wait':
>> kernel/torture.c:728:2: error: implicit declaration of function 'cond_resched_tasks_rcu_qs' [-Werror=implicit-function-declaration]
728 | cond_resched_tasks_rcu_qs();
| ^~~~~~~~~~~~~~~~~~~~~~~~~
>> kernel/torture.c:741:5: error: implicit declaration of function 'cond_resched'; did you mean 'need_resched'? [-Werror=implicit-function-declaration]
741 | cond_resched();
| ^~~~~~~~~~~~
| need_resched
cc1: some warnings being treated as errors


vim +741 kernel/torture.c

628edaa5062282 Paul E. McKenney 2014-01-31 717
628edaa5062282 Paul E. McKenney 2014-01-31 718 /*
628edaa5062282 Paul E. McKenney 2014-01-31 719 * Block until the stutter interval ends. This must be called periodically
628edaa5062282 Paul E. McKenney 2014-01-31 720 * by all running kthreads that need to be subject to stuttering.
628edaa5062282 Paul E. McKenney 2014-01-31 721 */
474e59b476b339 Paul E. McKenney 2018-08-07 722 bool stutter_wait(const char *title)
628edaa5062282 Paul E. McKenney 2014-01-31 723 {
19012b786ecccb Paul E. McKenney 2020-09-01 724 unsigned int i = 0;
e8516c64fe97e2 Paul E. McKenney 2019-04-09 725 bool ret = false;
19012b786ecccb Paul E. McKenney 2020-09-01 726 int spt;
4ced3314fd3a73 Paul E. McKenney 2017-11-21 727
cee43939893337 Paul E. McKenney 2018-03-02 @728 cond_resched_tasks_rcu_qs();
4ced3314fd3a73 Paul E. McKenney 2017-11-21 729 spt = READ_ONCE(stutter_pause_test);
29d3939084583b Paul E. McKenney 2017-11-21 730 for (; spt; spt = READ_ONCE(stutter_pause_test)) {
ab1b7880dec86b Paul E. McKenney 2020-09-22 731 if (!ret) {
ab1b7880dec86b Paul E. McKenney 2020-09-22 732 sched_set_normal(current, MAX_NICE);
e8516c64fe97e2 Paul E. McKenney 2019-04-09 733 ret = true;
ab1b7880dec86b Paul E. McKenney 2020-09-22 734 }
4ced3314fd3a73 Paul E. McKenney 2017-11-21 735 if (spt == 1) {
628edaa5062282 Paul E. McKenney 2014-01-31 736 schedule_timeout_interruptible(1);
4ced3314fd3a73 Paul E. McKenney 2017-11-21 737 } else if (spt == 2) {
19012b786ecccb Paul E. McKenney 2020-09-01 738 while (READ_ONCE(stutter_pause_test)) {
ed24affa71f7ab Paul E. McKenney 2020-11-17 739 if (!(i++ & 0xffff))
ed24affa71f7ab Paul E. McKenney 2020-11-17 740 torture_hrtimeout_us(10, 0, NULL);
ab7d45053f99f4 Paul E. McKenney 2014-03-04 @741 cond_resched();
19012b786ecccb Paul E. McKenney 2020-09-01 742 }
4ced3314fd3a73 Paul E. McKenney 2017-11-21 743 } else {
628edaa5062282 Paul E. McKenney 2014-01-31 744 schedule_timeout_interruptible(round_jiffies_relative(HZ));
4ced3314fd3a73 Paul E. McKenney 2017-11-21 745 }
628edaa5062282 Paul E. McKenney 2014-01-31 746 torture_shutdown_absorb(title);
628edaa5062282 Paul E. McKenney 2014-01-31 747 }
e8516c64fe97e2 Paul E. McKenney 2019-04-09 748 return ret;
628edaa5062282 Paul E. McKenney 2014-01-31 749 }
628edaa5062282 Paul E. McKenney 2014-01-31 750 EXPORT_SYMBOL_GPL(stutter_wait);
628edaa5062282 Paul E. McKenney 2014-01-31 751

:::::: The code at line 741 was first introduced by commit
:::::: ab7d45053f99f44f81a221eb5c9fbe253ee94524 torture: Increase stutter-end intensity

:::::: TO: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
:::::: CC: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>

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

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