[jfern:coresched 12/12] ld: kernel/sched/core.o:(__jump_table+0x8): undefined reference to `__sched_core_enabled'

[jfern:coresched 12/12] ld: kernel/sched/core.o:(__jump_table+0x8): undefined reference to `__sched_core_enabled'

[kernel test robot]

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/jfern/linux.git coresched
head:   0cae4d526e66a8aa5f8b3626045be344860e9b8d
commit: 0cae4d526e66a8aa5f8b3626045be344860e9b8d [12/12] FIXUP: Add a ht_protect= kernel cmdline option.
config: i386-defconfig (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/jfern/linux.git/commit/?id=0cae4d526e66a8aa5f8b3626045be344860e9b8d
        git remote add jfern https://git.kernel.org/pub/scm/linux/kernel/git/jfern/linux.git
        git fetch --no-tags jfern coresched
        git checkout 0cae4d526e66a8aa5f8b3626045be344860e9b8d
        # save the attached .config to linux build tree
        make W=1 ARCH=i386 

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 >>):

   ld: kernel/sched/core.o: in function `sched_core_get':
   core.c:(.text+0x4098): undefined reference to `__sched_core_enabled'
   ld: kernel/sched/core.o: in function `sched_core_put':
   core.c:(.text+0x40f7): undefined reference to `__sched_core_enabled'
>> ld: kernel/sched/core.o:(__jump_table+0x8): undefined reference to `__sched_core_enabled'
   ld: kernel/sched/core.o:(__jump_table+0x14): undefined reference to `__sched_core_enabled'
   ld: kernel/sched/core.o:(__jump_table+0x20): undefined reference to `__sched_core_enabled'
   ld: kernel/sched/core.o:(__jump_table+0x2c): more undefined references to `__sched_core_enabled' follow

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

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