Hi Yinan,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on rostedt-trace/for-next]
[also build test ERROR on linux/master linus/master v5.16-rc1 next-20211117]
[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/Yinan-Liu/scripts-ftrace-move-the-sort-processing-in-ftrace_init-to-compile-time/20211116-114954
base:   https://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git for-next
config: i386-debian-10.3 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
        # https://github.com/0day-ci/linux/commit/fe96b08ca13186c5821d3fabf66f4a209be20507
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Yinan-Liu/scripts-ftrace-move-the-sort-processing-in-ftrace_init-to-compile-time/20211116-114954
        git checkout fe96b08ca13186c5821d3fabf66f4a209be20507
        # save the attached .config to linux build tree
        mkdir build_dir
        make W=1 O=build_dir ARCH=i386 prepare

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 >>):

   /usr/bin/ld: /tmp/ccTdfIIm.o: in function `main':
>> sorttable.c:(.text.startup+0xabb): undefined reference to `pthread_create'
>> /usr/bin/ld: sorttable.c:(.text.startup+0xc5a): undefined reference to `pthread_join'
>> /usr/bin/ld: sorttable.c:(.text.startup+0xe34): undefined reference to `pthread_create'
>> collect2: error: ld returned 1 exit status
   make[2]: *** [scripts/Makefile.host:95: scripts/sorttable] Error 1
   make[2]: Target '__build' not remade because of errors.
   make[1]: *** [Makefile:1203: scripts] Error 2
   make[1]: Target 'prepare' not remade because of errors.
   make: *** [Makefile:219: __sub-make] Error 2
   make: Target 'prepare' not remade because of errors.

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