From: Andrew Morton <akpm@linux-foundation.org>
To: kbuild test robot <fengguang.wu@intel.com>
Cc: Michal Hocko <mhocko@suse.com>,
kbuild-all@01.org, Johannes Weiner <hannes@cmpxchg.org>,
Linux Memory Management List <linux-mm@kvack.org>
Subject: Re: [mmotm:master 180/303] arch/tile/kernel/setup.c:222:2: warning: the address of 'isolnodes' will always evaluate as 'true'
Date: Mon, 13 Nov 2017 16:10:26 -0800 [thread overview]
Message-ID: <20171113161026.74c7931ba0f1cf378c27b928@linux-foundation.org> (raw)
In-Reply-To: <201711111502.llJQ6zva%fengguang.wu@intel.com>
On Sat, 11 Nov 2017 15:49:04 +0800 kbuild test robot <fengguang.wu@intel.com> wrote:
> tree: git://git.cmpxchg.org/linux-mmotm.git master
> head: 21c4efa7694b072dddce68082e16156f24e1c1f0
> commit: 224aa5f4017811570da4d0a332d9791da07b2fc7 [180/303] mm: simplify nodemask printing
> config: tile-tilegx_defconfig (attached as .config)
> compiler: tilegx-linux-gcc (GCC) 4.6.2
> reproduce:
> wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
> chmod +x ~/bin/make.cross
> git checkout 224aa5f4017811570da4d0a332d9791da07b2fc7
> # save the attached .config to linux build tree
> make.cross ARCH=tile
>
> All warnings (new ones prefixed by >>):
>
> arch/tile/kernel/setup.c: In function 'setup_isolnodes':
> >> arch/tile/kernel/setup.c:222:2: warning: the address of 'isolnodes' will always evaluate as 'true' [-Waddress]
> >> arch/tile/kernel/setup.c:222:2: warning: the address of 'isolnodes' will always evaluate as 'true' [-Waddress]
>
> vim +222 arch/tile/kernel/setup.c
>
> 77f8c740 Chris Metcalf 2013-08-06 216
> 867e359b Chris Metcalf 2010-05-28 217 static int __init setup_isolnodes(char *str)
> 867e359b Chris Metcalf 2010-05-28 218 {
> 867e359b Chris Metcalf 2010-05-28 219 if (str == NULL || nodelist_parse(str, isolnodes) != 0)
> 867e359b Chris Metcalf 2010-05-28 220 return -EINVAL;
> 867e359b Chris Metcalf 2010-05-28 221
> 839b2680 Tejun Heo 2015-02-13 @222 pr_info("Set isolnodes value to '%*pbl'\n",
> 839b2680 Tejun Heo 2015-02-13 223 nodemask_pr_args(&isolnodes));
> 867e359b Chris Metcalf 2010-05-28 224 return 0;
> 867e359b Chris Metcalf 2010-05-28 225 }
> 867e359b Chris Metcalf 2010-05-28 226 early_param("isolnodes", setup_isolnodes);
> 867e359b Chris Metcalf 2010-05-28 227
Well that's irritating. Maybe we can suppress it with some mess
involving builtin_constant_p?
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next prev parent reply other threads:[~2017-11-14 0:10 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-11 7:49 kbuild test robot
2017-11-14 0:10 ` Andrew Morton [this message]
2017-11-14 7:01 ` Michal Hocko
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