undefined reference to `__trace_hardirqs_off'

[kbuild test robot]

Hi Mike,

It's probably a bug fix that unveils the link errors.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   35c222fd323629cf2e834eb8aff77058856ffdda
commit: 060dc911501f6ee222569304f50962172a52b1d6 nds32: fix build failure caused by page table folding updates
date:   5 weeks ago
config: nds32-randconfig-a001-20200130 (attached as .config)
compiler: nds32le-linux-gcc (GCC) 9.2.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 060dc911501f6ee222569304f50962172a52b1d6
        # save the attached .config to linux build tree
        GCC_VERSION=9.2.0 make.cross ARCH=nds32 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@xxxxxxxxx>

All errors (new ones prefixed by >>):

   nds32le-linux-ld: arch/nds32/kernel/ex-entry.o: in function `fucop_ctl_done':
>> (.text+0x12a): undefined reference to `__trace_hardirqs_off'
   (.text+0x12a): relocation truncated to fit: R_NDS32_25_PCREL_RELA against undefined symbol `__trace_hardirqs_off'
   nds32le-linux-ld: arch/nds32/kernel/ex-exit.o: in function `no_work_pending':
   (.text+0xea): undefined reference to `__trace_hardirqs_off'
>> nds32le-linux-ld: (.text+0xee): undefined reference to `__trace_hardirqs_off'
>> nds32le-linux-ld: (.text+0xf2): undefined reference to `__trace_hardirqs_on'
   nds32le-linux-ld: (.text+0xf6): undefined reference to `__trace_hardirqs_on'

---
0-DAY kernel test infrastructure                 Open Source Technology Center
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