Hi Pingfan, Thank you for the patch! Yet something to improve:
[auto build test ERROR on powerpc/next] [also build test ERROR on v4.18-rc7 next-20180802] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Pingfan-Liu/powerpc-cpuidle-dynamically-register-unregister-cpuidle_device-during-hotplug/20180803-151916 base: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next config: powerpc-allnoconfig (attached as .config) compiler: powerpc-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree GCC_VERSION=7.2.0 make.cross ARCH=powerpc All errors (new ones prefixed by >>): arch/powerpc/kernel/sysfs.c: In function 'unregister_ppc_cpu': >> arch/powerpc/kernel/sysfs.c:1052:2: error: implicit declaration of function >> 'unregister_cpu'; did you mean 'register_cpu'? >> [-Werror=implicit-function-declaration] unregister_cpu(container_of(get_cpu_device(cpu), ^~~~~~~~~~~~~~ register_cpu cc1: all warnings being treated as errors vim +1052 arch/powerpc/kernel/sysfs.c 1047 1048 int unregister_ppc_cpu(int cpu) 1049 { 1050 device_remove_file(&per_cpu(cpu_devices, cpu).dev, 1051 &dev_attr_physical_id); > 1052 unregister_cpu(container_of(get_cpu_device(cpu), 1053 struct cpu, dev)); 1054 return 0; 1055 } 1056 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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