linux-kernel - [mcgrof-next:20211116-sysctl-cleanups-v3 20/20] kernel/printk/sysctl.c:82:13: warning: no previous prototype for 'printk_sysctl

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Date:   Wed, 17 Nov 2021 13:01:17 +0800
From:   kernel test robot <lkp@...el.com>
To:     Xiaoming Ni <nixiaoming@...wei.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Luis Chamberlain <mcgrof@...nel.org>
Subject: [mcgrof-next:20211116-sysctl-cleanups-v3 20/20]
 kernel/printk/sysctl.c:82:13: warning: no previous prototype for
 'printk_sysctl_init'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux-next.git 20211116-sysctl-cleanups-v3
head:   06113f1d9a2d0669964adfa2e0128bd50e56b621
commit: 06113f1d9a2d0669964adfa2e0128bd50e56b621 [20/20] printk: move printk sysctl to printk/sysctl.c
config: riscv-randconfig-r042-20211116 (attached as .config)
compiler: riscv64-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://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux-next.git/commit/?id=06113f1d9a2d0669964adfa2e0128bd50e56b621
        git remote add mcgrof-next https://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux-next.git
        git fetch --no-tags mcgrof-next 20211116-sysctl-cleanups-v3
        git checkout 06113f1d9a2d0669964adfa2e0128bd50e56b621
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=riscv 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

All warnings (new ones prefixed by >>):

   kernel/printk/sysctl.c:47:36: error: 'printk_delay_msec' undeclared here (not in a function)
      47 |                 .data           = &printk_delay_msec,
         |                                    ^~~~~~~~~~~~~~~~~
   kernel/printk/sysctl.c:59:35: error: 'devkmsg_sysctl_set_loglvl' undeclared here (not in a function)
      59 |                 .proc_handler   = devkmsg_sysctl_set_loglvl,
         |                                   ^~~~~~~~~~~~~~~~~~~~~~~~~
   kernel/printk/sysctl.c:63:36: error: 'dmesg_restrict' undeclared here (not in a function)
      63 |                 .data           = &dmesg_restrict,
         |                                    ^~~~~~~~~~~~~~
>> kernel/printk/sysctl.c:82:13: warning: no previous prototype for 'printk_sysctl_init' [-Wmissing-prototypes]
      82 | void __init printk_sysctl_init(void)
         |             ^~~~~~~~~~~~~~~~~~


vim +/printk_sysctl_init +82 kernel/printk/sysctl.c

    81	
  > 82	void __init printk_sysctl_init(void)
    83	{
    84		register_sysctl_init("kernel", printk_sysctls, "printk");
    85	}
    86	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

Download attachment ".config.gz" of type "application/gzip" (35044 bytes)