Hi Jiri,

I love your patch! Yet something to improve:

[auto build test ERROR on bpf-next/master]

url:    https://github.com/0day-ci/linux/commits/Jiri-Olsa/bpf-Add-d_path-helper/20200626-061748
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
config: arm-randconfig-c022-20200626 (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0

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 >>):

   /tmp/ccOhCdd6.s: Assembler messages:
>> /tmp/ccOhCdd6.s:79: Error: unrecognized symbol type ""
   /tmp/ccOhCdd6.s:92: Error: unrecognized symbol type ""

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0-DAY CI Kernel Test Service, Intel Corporation
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