Hi Masami, I love your patch! Yet something to improve: [auto build test ERROR on tip/perf/core] [also build test ERROR on trace/for-next lwn/docs-next linus/master v5.9-rc3 next-20200828] [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/Masami-Hiramatsu/tracing-boot-Add-new-options-for-tracing-specific-period/20200831-204738 base: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git 2cb5383b30d47c446ec7d884cd80f93ffcc31817 config: arc-defconfig (attached as .config) compiler: arc-elf-gcc (GCC) 9.3.0 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 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): arc-elf-ld: init/main.o: in function `kernel_init': >> main.c:(.ref.text+0xa6): undefined reference to `kprobe_free_init_mem' >> arc-elf-ld: main.c:(.ref.text+0xa6): undefined reference to `kprobe_free_init_mem' --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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