Hi Cai,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on tip/perf/core]
[also build test ERROR on rdma/for-next paulmck-rcu/dev linus/master v5.15-rc6 next-20211021]
[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/Cai-Huoqing/kthread-Add-the-helper-macro-kthread_run_on_cpu/20211021-202912
base:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git 26da4abfb38201c3cbe127daeded76d4c2bc9077
config: hexagon-randconfig-r045-20211021 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 3cea2505fd8d99a9ba0cb625aecfe28a47c4e3f8)
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/76b990017d9057e8fbd8cd83be5e3791c79df13e
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Cai-Huoqing/kthread-Add-the-helper-macro-kthread_run_on_cpu/20211021-202912
        git checkout 76b990017d9057e8fbd8cd83be5e3791c79df13e
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=hexagon 

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 >>, old ones prefixed by <<):

>> ERROR: modpost: "kthread_create_on_cpu" [drivers/infiniband/sw/siw/siw.ko] undefined!

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