linux-kernel - Re: [ammarfaizi2-block:paulmck/linux-rcu/dev.2022.04.18a 22/22] kernel/rcu/tree_nocb.h:1162:14: error: 'rcu_nocb_is_setup' undeclared; did you mean 'rcu_nocb

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Message-ID: <20220421133533.GQ4285@paulmck-ThinkPad-P17-Gen-1>
Date:   Thu, 21 Apr 2022 06:35:33 -0700
From:   "Paul E. McKenney" <paulmck@...nel.org>
To:     kernel test robot <lkp@...el.com>
Cc:     Joel Fernandes <joel@...lfernandes.org>, kbuild-all@...ts.01.org,
        GNU/Weeb Mailing List <gwml@...r.gnuweeb.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [ammarfaizi2-block:paulmck/linux-rcu/dev.2022.04.18a 22/22]
 kernel/rcu/tree_nocb.h:1162:14: error: 'rcu_nocb_is_setup' undeclared; did
 you mean 'rcu_nocb_setup'?

On Thu, Apr 21, 2022 at 02:41:04PM +0800, kernel test robot wrote:
> tree:   https://github.com/ammarfaizi2/linux-block paulmck/linux-rcu/dev.2022.04.18a
> head:   d6932dca19b1a7cbccad9d4acede8229e61cf97a
> commit: d6932dca19b1a7cbccad9d4acede8229e61cf97a [22/22] rcu/nocb: Add an option to offload all CPUs on boot
> config: mips-allyesconfig (https://download.01.org/0day-ci/archive/20220421/202204210054.ZtsFVPYs-lkp@intel.com/config)
> compiler: mips-linux-gcc (GCC) 11.2.0
> 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://github.com/ammarfaizi2/linux-block/commit/d6932dca19b1a7cbccad9d4acede8229e61cf97a
>         git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block
>         git fetch --no-tags ammarfaizi2-block paulmck/linux-rcu/dev.2022.04.18a
>         git checkout d6932dca19b1a7cbccad9d4acede8229e61cf97a
>         # save the config file
>         mkdir build_dir && cp config build_dir/.config
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash
> 
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@...el.com>

This one is no longer in tree, but a replacement should be on its way,
with attribution.

							Thanx, Paul

> All errors (new ones prefixed by >>):
> 
>    In file included from kernel/rcu/tree.c:5031:
>    kernel/rcu/tree_nocb.h: In function 'rcu_init_nohz':
> >> kernel/rcu/tree_nocb.h:1162:14: error: 'rcu_nocb_is_setup' undeclared (first use in this function); did you mean 'rcu_nocb_setup'?
>     1162 |         if (!rcu_nocb_is_setup) {
>          |              ^~~~~~~~~~~~~~~~~
>          |              rcu_nocb_setup
>    kernel/rcu/tree_nocb.h:1162:14: note: each undeclared identifier is reported only once for each function it appears in
> 
> 
> vim +1162 kernel/rcu/tree_nocb.h
> 
>   1153	
>   1154	void __init rcu_init_nohz(void)
>   1155	{
>   1156		int cpu;
>   1157		bool need_rcu_nocb_mask = false;
>   1158		bool offload_all = false;
>   1159		struct rcu_data *rdp;
>   1160	
>   1161	#if defined(CONFIG_RCU_NOCB_CPU_DEFAULT_ALL)
> > 1162		if (!rcu_nocb_is_setup) {
>   1163			need_rcu_nocb_mask = true;
>   1164			offload_all = true;
>   1165		}
>   1166	#endif
>   1167	
> 
> -- 
> 0-DAY CI Kernel Test Service
> https://01.org/lkp