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Subject[jirislaby:lto 32/45] arch/x86/kernel/paravirt.c:123:15: warning: no previous prototype for function 'native_steal_clock'
tree:   https://git.kernel.org/pub/scm/linux/kernel/git/jirislaby/linux.git lto
head: 8047611082d70c5263114fabce8c80a4c3d251fa
commit: b2efc66d269d1bb2b1b2a8aac7e873ed266678ba [32/45] x86/paravirt/lto: Export native_steal_clock
config: x86_64-randconfig-a005 (https://download.01.org/0day-ci/archive/20220623/202206230120.YLCB69tS-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 8b8d126598ce7bd5243da7f94f69fa1104288bee)
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/jirislaby/linux.git/commit/?id=b2efc66d269d1bb2b1b2a8aac7e873ed266678ba
git remote add jirislaby https://git.kernel.org/pub/scm/linux/kernel/git/jirislaby/linux.git
git fetch --no-tags jirislaby lto
git checkout b2efc66d269d1bb2b1b2a8aac7e873ed266678ba
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash arch/x86/kernel/

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

All warnings (new ones prefixed by >>):

>> arch/x86/kernel/paravirt.c:123:15: warning: no previous prototype for function 'native_steal_clock' [-Wmissing-prototypes]
__visible u64 native_steal_clock(int cpu)
^
arch/x86/kernel/paravirt.c:123:11: note: declare 'static' if the function is not intended to be used outside of this translation unit
__visible u64 native_steal_clock(int cpu)
^
static
1 warning generated.


vim +/native_steal_clock +123 arch/x86/kernel/paravirt.c

122
> 123 __visible u64 native_steal_clock(int cpu)
124 {
125 return 0;
126 }
127

--
0-DAY CI Kernel Test Service
https://01.org/lkp

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