linux-kernel - Re: [rcu:dev.2019.07.31a 122/123] ERROR: "tick_nohz_dep_set_task" [kernel/rcu/rcutorture.ko] undefined!

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Message-ID: <20190807223809.GJ28441@linux.ibm.com>
Date:   Wed, 7 Aug 2019 15:38:09 -0700
From:   "Paul E. McKenney" <paulmck@...ux.ibm.com>
To:     kbuild test robot <lkp@...el.com>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org
Subject: Re: [rcu:dev.2019.07.31a 122/123] ERROR: "tick_nohz_dep_set_task"
 [kernel/rcu/rcutorture.ko] undefined!

On Thu, Aug 08, 2019 at 06:06:58AM +0800, kbuild test robot wrote:
> tree:   https://kernel.googlesource.com/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev.2019.07.31a
> head:   71cf692f482ff45802352cf85a8880035fca9e52
> commit: 1e900d78f345ee808992b1212c0388a5c8381b96 [122/123] rcutorture: Force on tick for readers and callback flooders
> config: x86_64-randconfig-h001-201930 (attached as .config)
> compiler: gcc-7 (Debian 7.4.0-10) 7.4.0
> reproduce:
>         git checkout 1e900d78f345ee808992b1212c0388a5c8381b96
>         # 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@...el.com>
> 
> All errors (new ones prefixed by >>):
> 
> >> ERROR: "tick_nohz_dep_set_task" [kernel/rcu/rcutorture.ko] undefined!
> >> ERROR: "tick_nohz_dep_clear_task" [kernel/rcu/rcutorture.ko] undefined!
> >> ERROR: "tick_nohz_full_running" [kernel/rcu/rcutorture.ko] undefined!

This commit has been fixed by bb72f77a5503 ("rcutorture: Force on tick
for readers and callback flooders"), which no longer invokes these
three functions.

							Thanx, Paul