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Subject[rcu:rcu/test 136/143] kernel/rcu/tree_plugin.h:2696:25: error: 'struct task_struct' has no member named 'on_cpu'
tree:   https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git rcu/test
head: 4c4c8e04a7f8522de634aa062f4cd6b8b80c151b
commit: 72351a864d02b480a5c237144033e21be816f29f [136/143] fixup! rcu/nocb: Add grace period and task state to show_rcu_nocb_state() output
config: nds32-randconfig-r014-20201221 (attached as .config)
compiler: nds32le-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=72351a864d02b480a5c237144033e21be816f29f
git remote add rcu https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git
git fetch --no-tags rcu rcu/test
git checkout 72351a864d02b480a5c237144033e21be816f29f
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=nds32

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

All errors (new ones prefixed by >>):

In file included from include/linux/kernel.h:16,
from kernel/rcu/tree.c:21:
kernel/rcu/tree_plugin.h: In function 'show_rcu_nocb_gp_state':
>> kernel/rcu/tree_plugin.h:2696:25: error: 'struct task_struct' has no member named 'on_cpu'
2696 | !rdp->nocb_cb_kthread->on_cpu ? "!" : "");
| ^~
include/linux/printk.h:373:34: note: in definition of macro 'pr_info'
373 | printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
| ^~~~~~~~~~~
kernel/rcu/tree_plugin.h: In function 'show_rcu_nocb_state':
kernel/rcu/tree_plugin.h:2737:25: error: 'struct task_struct' has no member named 'on_cpu'
2737 | !rdp->nocb_cb_kthread->on_cpu ? "!" : "");
| ^~
include/linux/printk.h:373:34: note: in definition of macro 'pr_info'
373 | printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
| ^~~~~~~~~~~


vim +2696 kernel/rcu/tree_plugin.h

2669
2670 /*
2671 * Dump out nocb grace-period kthread state for the specified rcu_data
2672 * structure.
2673 */
2674 static void show_rcu_nocb_gp_state(struct rcu_data *rdp)
2675 {
2676 struct rcu_node *rnp = rdp->mynode;
2677
2678 pr_info("nocb GP %d %c%c%c%c%c%c %c[%c%c] %c%c:%ld rnp %d:%d %lu %c CPU %d%s\n",
2679 rdp->cpu,
2680 "kK"[!!rdp->nocb_gp_kthread],
2681 "lL"[raw_spin_is_locked(&rdp->nocb_gp_lock)],
2682 "dD"[!!rdp->nocb_defer_wakeup],
2683 "tT"[timer_pending(&rdp->nocb_timer)],
2684 "bB"[timer_pending(&rdp->nocb_bypass_timer)],
2685 "sS"[!!rdp->nocb_gp_sleep],
2686 ".W"[swait_active(&rdp->nocb_gp_wq)],
2687 ".W"[swait_active(&rnp->nocb_gp_wq[0])],
2688 ".W"[swait_active(&rnp->nocb_gp_wq[1])],
2689 ".B"[!!rdp->nocb_gp_bypass],
2690 ".G"[!!rdp->nocb_gp_gp],
2691 (long)rdp->nocb_gp_seq,
2692 rnp->grplo, rnp->grphi, READ_ONCE(rdp->nocb_gp_loops),
2693 rdp->nocb_gp_kthread ? task_state_to_char(rdp->nocb_gp_kthread) : '.',
2694 rdp->nocb_cb_kthread ? (int)task_cpu(rdp->nocb_gp_kthread) : -1,
2695 rdp->nocb_cb_kthread && rdp->nocb_cb_kthread->state == TASK_RUNNING &&
> 2696 !rdp->nocb_cb_kthread->on_cpu ? "!" : "");
2697 }
2698

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