Hi, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on linus/master] [also build test WARNING on v5.13-rc4 next-20210604] [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/qiang-zhang-windriver-com/eventfd-convert-global-percpu-eventfd_wake_count-to-ctx-percpu-eventfd_wake_count/20210604-154249 base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git f88cd3fb9df228e5ce4e13ec3dbad671ddb2146e config: arm-randconfig-s031-20210604 (attached as .config) compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.3-341-g8af24329-dirty # https://github.com/0day-ci/linux/commit/3cff73140b2b518eec3e30712d9c66bbde8ad375 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review qiang-zhang-windriver-com/eventfd-convert-global-percpu-eventfd_wake_count-to-ctx-percpu-eventfd_wake_count/20210604-154249 git checkout 3cff73140b2b518eec3e30712d9c66bbde8ad375 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' W=1 ARCH=arm If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot sparse warnings: (new ones prefixed by >>) fs/aio.c:588:24: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void [noderef] __percpu *__pdata @@ got struct kioctx_cpu *cpu @@ fs/aio.c:588:24: sparse: expected void [noderef] __percpu *__pdata fs/aio.c:588:24: sparse: got struct kioctx_cpu *cpu fs/aio.c:755:18: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct kioctx_cpu *cpu @@ got struct kioctx_cpu [noderef] __percpu * @@ fs/aio.c:755:18: sparse: expected struct kioctx_cpu *cpu fs/aio.c:755:18: sparse: got struct kioctx_cpu [noderef] __percpu * fs/aio.c:802:24: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void [noderef] __percpu *__pdata @@ got struct kioctx_cpu *cpu @@ fs/aio.c:802:24: sparse: expected void [noderef] __percpu *__pdata fs/aio.c:802:24: sparse: got struct kioctx_cpu *cpu fs/aio.c:907:16: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void const [noderef] __percpu *__vpp_verify @@ got struct kioctx_cpu * @@ fs/aio.c:907:16: sparse: expected void const [noderef] __percpu *__vpp_verify fs/aio.c:907:16: sparse: got struct kioctx_cpu * fs/aio.c:925:16: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void const [noderef] __percpu *__vpp_verify @@ got struct kioctx_cpu * @@ fs/aio.c:925:16: sparse: expected void const [noderef] __percpu *__vpp_verify fs/aio.c:925:16: sparse: got struct kioctx_cpu * fs/aio.c: note: in included file: >> include/linux/eventfd.h:46:33: sparse: sparse: marked inline, but without a definition vim +46 include/linux/eventfd.h 45 > 46 inline bool eventfd_signal_count(struct eventfd_ctx *ctx); 47 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org