Hi Petr,

[FYI, it's a private test report for your RFC patch.]
[auto build test ERROR on arnd-asm-generic/master]
[also build test ERROR on linux/master linus/master v5.16 next-20220111]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Petr-Mladek/printk-Remove-cyclic-include-dependencies-with-printk-h/20220111-223246
base:   https://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic.git master
config: s390-randconfig-r022-20220111 (https://download.01.org/0day-ci/archive/20220111/202201112339.t428FyWJ-lkp(a)intel.com/config)
compiler: s390-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/0day-ci/linux/commit/56a92e414d984931b56ad82e0d20ecdc7670fe29
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Petr-Mladek/printk-Remove-cyclic-include-dependencies-with-printk-h/20220111-223246
        git checkout 56a92e414d984931b56ad82e0d20ecdc7670fe29
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=s390 olddefconfig

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

All errors (new ones prefixed by >>):

   In file included from arch/s390/kernel/vdso64/getcpu.c:6:
>> arch/s390/include/asm/timex.h:88:13: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'time_early_init'
      88 | void __init time_early_init(void);
         |             ^~~~~~~~~~~~~~~
   make[2]: *** [arch/s390/kernel/vdso64/Makefile:62: arch/s390/kernel/vdso64/getcpu.o] Error 1
   make[2]: Target 'include/generated/vdso64-offsets.h' not remade because of errors.
   make[1]: *** [arch/s390/Makefile:165: vdso_prepare] Error 2
   make[1]: Target 'prepare' not remade because of errors.
   make: *** [Makefile:219: __sub-make] Error 2
   make: Target 'prepare' not remade because of errors.


vim +88 arch/s390/include/asm/timex.h

17eb7a5cfa9862 Heiko Carstens     2011-01-05  87  
b1c0854d168cc5 Martin Schwidefsky 2016-10-10 @88  void __init time_early_init(void);
4027789192d149 Martin Schwidefsky 2016-05-31  89  

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