Hi Dongdong, Thank you for the patch! Yet something to improve:
[auto build test ERROR on linus/master] [also build test ERROR on v5.10-rc2 next-20201103] [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/Dongdong-Tao/bcache-consider-the-fragmentation-when-update-the-writeback-rate/20201103-204517 base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git b7cbaf59f62f8ab8f157698f9e31642bff525bd0 config: nds32-randconfig-p002-20201103 (attached as .config) compiler: nds32le-linux-gcc (GCC) 9.3.0 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/4e57aac94bb0d0822473657d7ef0f3a0455e81f6 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Dongdong-Tao/bcache-consider-the-fragmentation-when-update-the-writeback-rate/20201103-204517 git checkout 4e57aac94bb0d0822473657d7ef0f3a0455e81f6 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=nds32 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <l...@intel.com> All errors (new ones prefixed by >>): nds32le-linux-ld: arch/nds32/kernel/ex-entry.o: in function `common_exception_handler': (.text+0xfe): undefined reference to `__trace_hardirqs_off' (.text+0xfe): 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+0xce): undefined reference to `__trace_hardirqs_off' nds32le-linux-ld: (.text+0xd2): undefined reference to `__trace_hardirqs_off' nds32le-linux-ld: (.text+0xd6): undefined reference to `__trace_hardirqs_on' nds32le-linux-ld: (.text+0xda): undefined reference to `__trace_hardirqs_on' nds32le-linux-ld: drivers/md/bcache/writeback.o: in function `update_writeback_rate': >> writeback.c:(.text+0x1ffa): undefined reference to `__divdi3' >> nds32le-linux-ld: writeback.c:(.text+0x1ffe): undefined reference to >> `__divdi3' --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org
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