linux-kernel - Re: [PATCH] cpuset: Allow v2 behavior in v1 cgroup

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Date:   Fri, 18 Aug 2017 05:05:31 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Waiman Long <longman@...hat.com>
Cc:     kbuild-all@...org, Tejun Heo <tj@...nel.org>,
        Li Zefan <lizefan@...wei.com>,
        Johannes Weiner <hannes@...xchg.org>,
        Jonathan Corbet <corbet@....net>, linux-kernel@...r.kernel.org,
        linux-doc@...r.kernel.org, Waiman Long <longman@...hat.com>
Subject: Re: [PATCH] cpuset: Allow v2 behavior in v1 cgroup

Hi Waiman,

[auto build test WARNING on linus/master]
[also build test WARNING on v4.13-rc5 next-20170817]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Waiman-Long/cpuset-Allow-v2-behavior-in-v1-cgroup/20170818-040416
config: i386-randconfig-n0-201733 (attached as .config)
compiler: gcc-4.8 (Debian 4.8.4-1) 4.8.4
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All warnings (new ones prefixed by >>):

   kernel/cgroup/cpuset.c: In function 'set_v2_mode':
>> kernel/cgroup/cpuset.c:2145:2: warning: passing argument 3 of 'kstrtol' from incompatible pointer type [enabled by default]
     ret = kstrtol(str, 0, &val);
     ^
   In file included from include/linux/list.h:8:0,
                    from include/linux/kobject.h:20,
                    from include/linux/device.h:17,
                    from include/linux/node.h:17,
                    from include/linux/cpu.h:16,
                    from kernel/cgroup/cpuset.c:25:
   include/linux/kernel.h:332:32: note: expected 'long int *' but argument is of type 'ssize_t *'
    static inline int __must_check kstrtol(const char *s, unsigned int base, long *res)
                                   ^

vim +/kstrtol +2145 kernel/cgroup/cpuset.c

  2138	
  2139	static int __init set_v2_mode(char *str)
  2140	{
  2141		ssize_t ret, val;
  2142	
  2143		if (!str)
  2144			return 0;
> 2145		ret = kstrtol(str, 0, &val);
  2146		cpuset_v2_mode = !!val;
  2147		return ret;
  2148	}
  2149	__setup("cpuset_v2_mode=", set_v2_mode);
  2150	

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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