linux-kernel - Re: [rcu:dev.2020.09.07a 23/23] ia64-linux-ld: core.c:undefined reference to `n_rtt

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Message-ID: <20200911134714.GW29330@paulmck-ThinkPad-P72>
Date:   Fri, 11 Sep 2020 06:47:14 -0700
From:   "Paul E. McKenney" <paulmck@...nel.org>
To:     kernel test robot <lkp@...el.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: Re: [rcu:dev.2020.09.07a 23/23] ia64-linux-ld: core.c:undefined
 reference to `n_rtt_sched'

On Fri, Sep 11, 2020 at 12:54:49PM +0800, kernel test robot wrote:
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev.2020.09.07a
> head:   cccf684a1da846c3ff830d553bc4cf97bf779f48
> commit: cccf684a1da846c3ff830d553bc4cf97bf779f48 [23/23] rcu-tasks: Mass of debug and fixes
> config: ia64-defconfig (attached as .config)
> compiler: ia64-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
>         git checkout cccf684a1da846c3ff830d553bc4cf97bf779f48
>         # save the attached .config to linux build tree
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=ia64 
> 
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@...el.com>

This one was strictly for debugging, and was not designed to work in
all configurations.  It is not intended for upstream.

							Thanx, Paul

> All errors (new ones prefixed by >>):
> 
>    ia64-linux-ld: kernel/sched/core.o: in function `try_invoke_on_locked_down_task':
>    core.c:(.text+0x86b0): undefined reference to `n_rtt_sched'
> >> ia64-linux-ld: core.c:(.text+0x86c1): undefined reference to `n_rtt_sched'
> >> ia64-linux-ld: core.c:(.text+0x8810): undefined reference to `n_rtt_sched_waking'
>    ia64-linux-ld: core.c:(.text+0x8811): undefined reference to `n_rtt_sched_waking'
> >> ia64-linux-ld: core.c:(.text+0x8850): undefined reference to `n_rtt_sched_fail'
>    ia64-linux-ld: core.c:(.text+0x8851): undefined reference to `n_rtt_sched_fail'
> >> ia64-linux-ld: core.c:(.text+0x88a0): undefined reference to `n_rtt_sched_running'
>    ia64-linux-ld: core.c:(.text+0x88a1): undefined reference to `n_rtt_sched_running'
>    ia64-linux-ld: core.c:(.text+0x88e0): undefined reference to `n_rtt_sched_fail'
>    ia64-linux-ld: core.c:(.text+0x88e1): undefined reference to `n_rtt_sched_fail'
> >> ia64-linux-ld: core.c:(.text+0x8990): undefined reference to `n_rtt_sched_offrq'
>    ia64-linux-ld: core.c:(.text+0x8991): undefined reference to `n_rtt_sched_offrq'
> >> ia64-linux-ld: core.c:(.text+0x8a90): undefined reference to `n_rtt_sched_onrq'
>    ia64-linux-ld: core.c:(.text+0x8a91): undefined reference to `n_rtt_sched_onrq'
> 
> ---
> 0-DAY CI Kernel Test Service, Intel Corporation
> https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org