linux-kernel - Re: [rcu:dev.2020.03.17a 61/80] kernel/rcu/tasks.h:1000:37: error: 'rcu_tasks_rude' undeclared; did you mean 'rcu_tasks

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Date:   Thu, 19 Mar 2020 06:15:32 -0700
From:   "Paul E. McKenney" <paulmck@...nel.org>
To:     kbuild test robot <lkp@...el.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: Re: [rcu:dev.2020.03.17a 61/80] kernel/rcu/tasks.h:1000:37: error:
 'rcu_tasks_rude' undeclared; did you mean 'rcu_tasks_qs'?

On Thu, Mar 19, 2020 at 07:01:29PM +0800, kbuild test robot wrote:
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev.2020.03.17a
> head:   0b42559abf67253005cca061233987ae9a2849a4
> commit: 589081348a37ec02d9b067aa08d4a771ae590e1e [61/80] rcu-tasks: Add RCU tasks to rcutorture writer stall output
> config: nds32-defconfig (attached as .config)
> compiler: nds32le-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 589081348a37ec02d9b067aa08d4a771ae590e1e
>         # save the attached .config to linux build tree
>         GCC_VERSION=9.2.0 make.cross ARCH=nds32 
> 
> If you fix the issue, kindly add following tag
> Reported-by: kbuild test robot <lkp@...el.com>
> 
> Note: the rcu/dev.2020.03.17a HEAD 0b42559abf67253005cca061233987ae9a2849a4 builds fine.
>       It only hurts bisectibility.

FYI, fixed by c6ef38e4d595 ("rcu-tasks: Add RCU tasks to rcutorture writer
stall output").

							Thanx, Paul

> All errors (new ones prefixed by >>):
> 
>    In file included from kernel/rcu/update.c:562:
>    kernel/rcu/tasks.h: In function 'show_rcu_tasks_gp_kthreads':
> >> kernel/rcu/tasks.h:1000:37: error: 'rcu_tasks_rude' undeclared (first use in this function); did you mean 'rcu_tasks_qs'?
>     1000 |  show_rcu_tasks_generic_gp_kthread(&rcu_tasks_rude, "");
>          |                                     ^~~~~~~~~~~~~~
>          |                                     rcu_tasks_qs
>    kernel/rcu/tasks.h:1000:37: note: each undeclared identifier is reported only once for each function it appears in
> 
> vim +1000 kernel/rcu/tasks.h
> 
>    996	
>    997	void show_rcu_tasks_gp_kthreads(void)
>    998	{
>    999		show_rcu_tasks_generic_gp_kthread(&rcu_tasks, "");
> > 1000		show_rcu_tasks_generic_gp_kthread(&rcu_tasks_rude, "");
>   1001		show_rcu_tasks_trace_gp_kthread();
>   1002	}
>   1003	
> 
> ---
> 0-DAY CI Kernel Test Service, Intel Corporation
> https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org