Re: [rcu:dev.2019.08.17a 8/36] ERROR: "tick_nohz_full_running" [kernel/rcu/rcutorture.ko] undefined!

From: Paul E. McKenney
Date: Wed Aug 21 2019 - 11:57:48 EST


On Wed, Aug 21, 2019 at 01:14:18PM +0800, kbuild test robot wrote:
> Hi Paul,
>
> FYI, the error/warning still remains.

Right you are! I have two bugs:

1. I forgot to move 8f5a099b19cf ("time: Export tick start/stop
functions for rcutorture") to precede dd891e13181a ("rcutorture:
Force on tick for readers and callback flooders").

2. I forgot to export tick_nohz_full_running.

Updating with attribution, thank you!

Thanx, Paul

> tree: https://kernel.googlesource.com/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev.2019.08.17a
> head: 9120323ada960bc9f1427e546772a983ad036b9a
> commit: 14569aa16daa1cd7610624a500ed2750fe341351 [8/36] rcutorture: Force on tick for readers and callback flooders
> config: x86_64-rhel (attached as .config)
> compiler: gcc-7 (Debian 7.4.0-10) 7.4.0
> reproduce:
> git checkout 14569aa16daa1cd7610624a500ed2750fe341351
> # save the attached .config to linux build tree
> make ARCH=x86_64
>
> If you fix the issue, kindly add following tag
> Reported-by: kbuild test robot <lkp@xxxxxxxxx>
>
> All errors (new ones prefixed by >>):
>
> ERROR: "tick_nohz_dep_clear_task" [kernel/rcu/rcutorture.ko] undefined!
> ERROR: "tick_nohz_dep_set_task" [kernel/rcu/rcutorture.ko] undefined!
> >> ERROR: "tick_nohz_full_running" [kernel/rcu/rcutorture.ko] undefined!
>
> ---
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