Hi Huang, [auto build test ERROR on hwmon/hwmon-next -- if it's inappropriate base, please suggest rules for selecting the more suitable base] url: https://github.com/0day-ci/linux/commits/Huang-Rui/hwmon-fam15h_power-Introduce-an-accumulated-power-reporting-algorithm/20151020-110712 config: x86_64-randconfig-s2-10201413 (attached as .config) reproduce: # save the attached .config to linux build tree make ARCH=x86_64 All errors (new ones prefixed by >>): drivers/built-in.o: In function `fam15h_power_probe': >> fam15h_power.c:(.text+0x26e3a3): undefined reference to `amd_get_cores_per_cu' fam15h_power.c:(.text+0x26e41e): undefined reference to `amd_get_cores_per_cu' --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation