Hi Sebastian,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on tip/master]
[also build test ERROR on linux/master tip/sched/core linus/master v5.15-rc3 next-20210922]
[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/Sebastian-Andrzej-Siewior/irq_work-PREEMPT_RT-bits/20211006-192111
base:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git d4bfebd9ef497ee0afb498f6028a5074a6ccf307
config: powerpc-randconfig-r025-20211004 (attached as .config)
compiler: powerpc-linux-gcc (GCC) 11.2.0
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
        # https://github.com/0day-ci/linux/commit/0906cdcac588712393e29dd4ce2be2057393c561
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Sebastian-Andrzej-Siewior/irq_work-PREEMPT_RT-bits/20211006-192111
        git checkout 0906cdcac588712393e29dd4ce2be2057393c561
        # save the attached .config to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=powerpc SHELL=/bin/bash

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 >>):

>> powerpc-linux-ld: kernel/irq_work.o:(.discard+0x0): multiple definition of `__pcpu_unique_irq_work_pending'; arch/powerpc/kernel/time.o:(.discard+0x0): first defined here

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